CN104982062B - Transmit the methods, devices and systems of data - Google Patents

Abstract

The present invention provides a method, device and system for transmitting data, which can enable the base station to independently determine the distribution strategy and improve user experience. The method is executed by the base station in the communication system, and the communication system also includes a wireless local area network access point WLAN AP and user equipment, a bearer for transmitting data of the user equipment is provided between the base station and the gateway device, a General Packet Radio Service Tunneling Protocol GTP tunnel is provided between the base station and the WLAN AP, the method includes: determining the The channel bandwidth used for communication between the user equipment and the WLAN AP; according to the channel bandwidth, the target data is transmitted between the WLAN AP and the user equipment through the GTP tunnel, wherein the target data is all the data on the bearer or partial data.

Description

Method, device and system for transmitting data

technical field

The present invention relates to the field of communication, and more particularly, to a method, device and system for transmitting data.

Background technique

With the rapid development of smart phones, more and more mobile communication terminals are integrated with a wireless local area network (WLAN, Wireless Local Area Network) communication module. On the other hand, as people's demand for mobile broadband continues to increase, existing (eg, wireless cellular) communication systems are under increasing pressure from data traffic. A feasible method is to integrate the wireless cellular technology and the WLAN technology, and use the WLAN to offload the data traffic of the mobile cellular communication system, thereby greatly improving the user experience of the cellular system.

At present, there is a known communication technology, in which a user equipment (UE, User Equipment) has been connected to an evolved packet core network (EPC, Evolved Packet Core) through a base station, and a packet data network gateway (PDN-GW, Public After the Data Network-Gateway) establishes a packet data network (PDN, Public Data Network) connection, the UE can access the EPC through, for example, a Trusted Wireless Local Area Network Access Network (TWAN, Trusted Wireless Local Area Networks Access Network), and , TWAN can select a certain PDN-GW to create a PDN connection, thereby realizing the integration of wireless cellular technology and WLAN technology.

However, in this technology, since the integration of offloading lies in the EPC, the base station cannot independently determine the offloading traffic, and the expected offloading effect may not be achieved due to the influence of the network status between the user equipment and the TWAN. Moreover, it cannot be guaranteed that the PDN-GW used when establishing a PDN connection through the WLAN is the same as the PDN-GW used when establishing a PDN connection through the base station, and service continuity cannot be guaranteed, which seriously affects user experience.

Therefore, it is desired to provide a technology that enables the base station to independently determine offload traffic, improve offload effects, and improve user experience.

Contents of the invention

Embodiments of the present invention provide a data transmission method, device, and system, which can enable a base station to independently determine offload traffic, improve offload effects, and improve user experience.

In the first aspect, a method for transmitting data is provided, which is executed by a base station in a communication system, the communication system also includes a wireless local area network access point WLAN AP and user equipment, between the base station and the gateway device, there is a device for transmitting For carrying the data of the user equipment, a General Packet Radio Service Tunneling Protocol (GTP) tunnel is set between the base station and the WLAN AP. The method includes: determining the channel bandwidth used for communication between the user equipment and the WLAN AP; according to the The channel bandwidth is to transmit target data with the user equipment through the WLAN AP via the GTP tunnel, where the target data is all or part of the data on the bearer.

With reference to the first aspect, in the first implementation manner of the first aspect, the determining the channel bandwidth used for communication between the user equipment and the WLAN AP includes: receiving the first channel bandwidth sent by the user equipment or the WLAN AP Bandwidth indication information, wherein the first channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP, and the channel bandwidth is determined after negotiation between the user equipment and the WLAN AP; according to the The first channel bandwidth indication information determines the channel bandwidth used for communication between the user equipment and the WLAN AP.

With reference to the first aspect and the above-mentioned implementation manners, in the second implementation manner of the first aspect, determining the channel bandwidth used for communication between the user equipment and the WLAN AP includes: receiving the channel bandwidth sent by the user equipment for Indicating the first capability information of the channel bandwidth that the user equipment can support; receiving the second capability information sent by the WLAN AP for indicating the channel bandwidth that the WLAN AP can support; according to the first capability information and the second capability information , to determine the channel bandwidth used for communication between the user equipment and the WLAN AP.

In combination with the first aspect and the foregoing implementation manners, in a third implementation manner of the first aspect, the transmission of the target data with the user equipment through the WLAN AP via the GTP tunnel according to the channel bandwidth includes: The user equipment sends second channel bandwidth indication information, and the second channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP, so that the user equipment can transmit information according to the second channel bandwidth indication information. , determining uplink target data, where the target uplink data is all or part of the uplink data on the bearer; receiving the uplink target data sent by the WLAN AP via the GTP tunnel, the uplink target data is sent by the user equipment to the WLAN AP.

In combination with the first aspect and the foregoing implementation manners, in a fourth implementation manner of the first aspect, the transmission of target data with the user equipment through the WLAN AP via the GTP tunnel according to the channel bandwidth includes: according to The channel bandwidth determines downlink target data, wherein the target downlink data is all or part of the downlink data on the bearer; sends the downlink target data to the WLAN AP via the GTP tunnel, so that the WLAN AP sends the user equipment Forwarding the downlink target data.

With reference to the first aspect and the foregoing implementation manners, in a fifth implementation manner of the first aspect, the method further includes: receiving channel switching information sent by the user equipment or the WLAN AP, where the channel switching information is used to indicate that the user The switching of the channel used for communication between the device and the WLAN AP and the time when the switching is completed; and the transmission of target data between the WLAN AP and the user equipment through the GTP tunnel according to the channel bandwidth, including: according to The channel bandwidth and the channel switching indication information are used to transmit target data with the user equipment through the WLAN AP via the GTP tunnel.

With reference to the first aspect and the above-mentioned implementation manners, in a sixth implementation manner of the first aspect, the base station has a first base station side protocol stack and a second base station side protocol stack, and the first base station side protocol stack is used in the base station The second base station side protocol stack is used to implement data processing for communication with the WLAN AP on the base station side, wherein the second base station side protocol stack is the same as the first base station side protocol stack. The at least one protocol layer of the protocol stack on the base station side is connected, and the transmission of the target data with the user equipment through the WLAN AP through the GTP tunnel according to the channel bandwidth includes: according to the channel bandwidth, through the first base station side At least one layer of the protocol stack and the second base station side protocol stack transmit target data with the user equipment through the WLAN AP via the GTP tunnel.

In the second aspect, a method for transmitting data is provided, which is executed by a wireless local area network access point WLANAP in a communication system, and the communication system further includes a base station and a user equipment, and between the base station and the gateway device, there is a device for transmitting the data. For carrying data of user equipment, a General Packet Radio Service Tunneling Protocol (GTP) tunnel is set between the base station and the WLAN AP, and the method includes: transmitting target data of the user equipment with the base station via the GTP tunnel, wherein the target The data is determined according to the channel bandwidth used for communication between the user equipment and the WLAN AP, and the target data is all or part of the data on the bearer.

With reference to the second aspect, in the first implementation manner of the second aspect, before transmitting the target data of the user equipment with the base station via the GTP tunnel, the method further includes: receiving a message sent by the user equipment for indicating the The first capability information of the channel bandwidth that the user equipment can support; according to the channel bandwidth that the WLAN AP can support and the first capability information, determine the channel bandwidth used for communication with the user equipment; send the first channel bandwidth to the base station indication information, wherein the first channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP.

With reference to the second aspect and the above implementation manners, in the second implementation manner of the second aspect, before transmitting the target data of the user equipment with the base station via the GTP tunnel, the method further includes: sending the user equipment to the base station The second capability information indicating the channel bandwidth that the WLAN AP can support, so that the base station determines the channel bandwidth used for communication between the user equipment and the WLAN AP according to the first capability information and the second capability information, wherein , the first capability indication information is sent by the user to the base station, and is used to indicate the channel bandwidth that the user equipment can support.

With reference to the second aspect and the above-mentioned implementation manners, in a third implementation manner of the second aspect, the method further includes: sending channel switching information to the base station, where the channel switching information is used to indicate the distance between the user equipment and the WLAN AP The channel used for inter-communication is switched and the time when the switch is completed.

In combination with the second aspect and the foregoing implementation manners, in a fourth implementation manner of the second aspect, the WLAN AP has a first WLAN AP side protocol stack and a second WLAN AP side protocol stack, and the first WLAN AP side protocol stack Used to implement data processing for communication with the base station on the WLAN AP side, the second WLAN AP side protocol stack is used to implement data processing for communication with the user equipment on the WLAN AP side, and the GTP tunnel , transmitting the target data of the user equipment with the base station, including: inputting the data obtained from the base station into the first WLAN AP side protocol stack, and transmitting the data output from the first WLAN AP side protocol stack to the second WLAN The AP side protocol stack, sending the data output from the second WLAN AP side protocol stack to the user equipment; or inputting the data obtained from the user equipment into the second WLAN AP side protocol stack, and sending the data from the second WLAN AP The data output by the side protocol stack is transmitted to the first WLAN AP side protocol stack, and the data output from the first WLAN AP side protocol stack is sent to the base station.

In a third aspect, a method for transmitting data is provided, which is executed by a user equipment in a communication system, the communication system further includes a base station and a wireless local area network access point WLAN AP, and between the base station and the gateway device, a device for transmitting For carrying the data of the user equipment, a General Packet Radio Service Tunneling Protocol (GTP) tunnel is set between the base station and the WLAN AP, and the method includes: transmitting target data with the base station via the WLAN AP, wherein the target data It is determined according to the channel bandwidth used for communication between the user equipment and the WLAN AP, the target data is transmitted between the WLAN AP and the base station via the GTP tunnel, and the target data is all or part of data.

With reference to the third aspect, in the first implementation manner of the third aspect, before transmitting the target data with the base station via the WLAN AP, the method further includes: receiving a message sent by the WLAN AP for indicating that the WLAN AP The second capability information of the channel bandwidth that can be supported; according to the channel bandwidth that the user equipment can support and the second capability information, determine the channel bandwidth used for communication with the WLAN AP; send the first channel bandwidth indication information to the base station , wherein the first channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP.

With reference to the third aspect and the above implementation manners, in the second implementation manner of the third aspect, before transmitting the target data with the base station via the WLAN AP, the method further includes: sending an instruction to the base station The first capability information of the channel bandwidth that the user equipment can support, so that the base station determines the channel bandwidth used for communication between the user equipment and the WLAN AP according to the first capability information and the second capability information, wherein the The second capability indication information is sent by the WLAN AP to the base station, and is used to indicate the channel bandwidth that the WLAN AP can support.

In combination with the third aspect and the foregoing implementation manners, in a third implementation manner of the third aspect, the transmission of target data with the base station via the WLAN AP includes: receiving second channel bandwidth indication information sent by the base station , the second channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP; according to the second channel bandwidth indication information, determine uplink target data, wherein the target uplink data is the bearer sending the uplink target data to the WLAN AP, so that the WLAN AP sends the uplink target data to the base station via the GTP tunnel.

With reference to the third aspect and the above implementation manners, in a fourth implementation manner of the third aspect, the method further includes: sending channel switching information to the base station, where the channel switching information is used to indicate the distance between the user equipment and the WLAN AP The channel used for inter-communication is switched and the time when the switch is completed.

With reference to the third aspect and the foregoing implementation manners, in a fifth implementation manner of the third aspect, the user equipment has a first user equipment side protocol stack and a second user equipment side protocol stack, and the first user equipment side protocol stack Used to implement data processing for communication with the base station on the user equipment side, the second user equipment side protocol stack is used to implement data processing for communication with the WLAN AP on the user equipment side, wherein the second The user equipment side protocol stack is connected to at least one protocol layer of the first user equipment side protocol stack, and the transmission of target data with the base station via the WLAN AP includes: passing at least one protocol layer of the first user equipment side protocol stack The first layer and the second user equipment side protocol stack transmit target data with the base station via the WLAN AP.

In the fourth aspect, a device for transmitting data is provided. A bearer for transmitting data of user equipment is provided between the device and the gateway device, and a general packet radio is provided between the device and the wireless local area network access point WLAN AP. Service Tunneling Protocol GTP Tunnel, the device includes: a first base station side protocol stack for implementing data processing for communication with the user equipment; a second base station side protocol stack for implementing data communication with the WLAN AP Processing, wherein, the second base station side protocol stack is connected to at least one protocol layer of the first base station side protocol stack; a determining unit is configured to determine the channel bandwidth used for communication between the user equipment and the WLAN AP; a transceiver unit , connected to the second base station side protocol stack, and configured to transmit target data with the user equipment through the WLAN AP via the GTP tunnel according to the channel bandwidth determined by the determining unit, wherein the target data is the bearer All or part of the data above.

With reference to the fourth aspect, in the first implementation manner of the fourth aspect, the transceiver unit is further configured to receive first channel bandwidth indication information sent by the user equipment or the WLAN AP, where the first channel bandwidth indication information is used To indicate the channel bandwidth used for communication between the user equipment and the WLAN AP, the channel bandwidth is determined after negotiation between the user equipment and the WLAN AP; the determining unit is specifically configured to determine the channel bandwidth according to the first channel bandwidth indication information Channel bandwidth used for communication between the user equipment and the WLAN AP.

With reference to the fourth aspect and the above implementation manners, in a second implementation manner of the fourth aspect, the transceiver unit is further configured to receive the first capability information sent by the user equipment and used to indicate the channel bandwidth that the user equipment can support , and receive second capability information sent by the WLAN AP for indicating the channel bandwidth that the WLAN AP can support; the determining unit is specifically configured to determine the relationship between the user equipment and the Channel bandwidth used for communication between WLAN APs.

With reference to the fourth aspect and the foregoing implementation manners, in a third implementation manner of the fourth aspect, the transceiver unit is further configured to send second channel bandwidth indication information to the user equipment, where the second channel bandwidth indication information is used to indicate The channel bandwidth used for communication between the user equipment and the WLAN AP, so that the user equipment can determine uplink target data according to the second channel bandwidth indication information, wherein the target uplink data is all or part of the uplink data on the bearer Data; the transceiving unit is specifically configured to receive the uplink target data sent by the WLAN AP via the GTP tunnel, and the uplink target data is sent to the WLAN AP by the user equipment.

With reference to the fourth aspect and its above-mentioned implementation manners, in a fourth implementation manner of the fourth aspect, the determining unit is further configured to determine downlink target data according to the channel bandwidth, where the target downlink data is all or part of the downlink data; the transceiving unit is specifically configured to send the downlink target data to the WLAN AP via the GTP tunnel, so that the WLAN AP forwards the downlink target data to the user equipment.

With reference to the fourth aspect and the foregoing implementation manners, in a fifth implementation manner of the fourth aspect, the transceiver unit is further configured to receive channel switching information sent by the user equipment or the WLAN AP, where the channel switching information is used to indicate that the The switching of the channel used for communication between the user equipment and the WLAN AP and the time when the switching is completed; the transceiver unit is specifically used to pass the WLAN AP and the WLAN AP through the GTP tunnel according to the channel bandwidth and the channel switching instruction information. The user equipment performs the transmission of the target data.

In the fifth aspect, a device for transmitting data is provided, wherein a General Packet Radio Service Tunneling Protocol (GTP) tunnel is provided between the device and the base station, and a device for transmitting user equipment is provided between the base station and the gateway device. For carrying data, the device includes: a first WLAN AP side protocol stack, configured to implement data processing for communication with the base station; a second WLAN AP side protocol stack, connected to the first WLAN AP side protocol stack, used for Realize data processing for communication with the user equipment; the transceiver unit is connected to the first WLAN AP side protocol stack and the second WLAN AP side protocol stack, and is used to transmit the user equipment with the base station via the GTP tunnel Target data, wherein the target data is determined according to the channel bandwidth used for communication between the user equipment and the WLAN AP, and the target data is all or part of the data on the bearer.

With reference to the fifth aspect, in the first implementation manner of the fifth aspect, the transceiver unit is further configured to receive first capability information sent by the user equipment and used to indicate the channel bandwidth that the user equipment can support; the apparatus further includes : a determining unit, configured to determine the channel bandwidth used for communication with the user equipment according to the channel bandwidth that the WLAN AP can support and the first capability information; and the transceiver unit is also configured to send the first channel bandwidth to the base station indication information, wherein the first channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP.

With reference to the fifth aspect and the foregoing implementation manners thereof, in a second implementation manner of the fifth aspect, the transceiver unit is further configured to send second capability information indicating the channel bandwidth that the WLAN AP can support to the base station, so that The base station determines the channel bandwidth used for communication between the user equipment and the WLAN AP according to the first capability information and the second capability information, where the first capability indication information is sent by the user to the base station, and is used to indicate the channel bandwidth that the user equipment can support.

With reference to the fifth aspect and the above-mentioned implementation manners, in a third implementation manner of the fifth aspect, the transceiver unit is further configured to send channel switching information to the base station, and the channel switching information is used to indicate that the user equipment and the WLAN AP The channel used for inter-communication switches and the time when the switch is completed.

According to the sixth aspect, an apparatus for transmitting data is provided, and the apparatus includes: a protocol stack on the first user equipment side, configured to implement data processing for communication with a base station, wherein, between the base station and the gateway equipment, there is a user equipment For carrying the data of the user equipment, a General Packet Radio Service Tunneling Protocol (GTP) tunnel is set between the base station and the wireless local area network access point WLAN AP; the second user equipment side protocol stack is used to realize communication with the WLAN AP. Communication data processing, wherein the second user equipment side protocol stack is connected to at least one protocol layer of the first user equipment side protocol stack; the transceiver unit is connected to the second user equipment side protocol stack for AP, performing target data transmission with the base station, wherein the target data is determined according to the channel bandwidth used for communication between the user equipment and the WLAN AP, and the target data is between the WLAN AP and the base station via For the GTP tunnel transmission, the target data is all or part of the data on the bearer.

With reference to the sixth aspect, in the first implementation manner of the sixth aspect, the transceiver unit is further configured to receive second capability information sent by the WLAN AP and used to indicate the channel bandwidth that the WLAN AP can support; the device further includes: The determining unit is configured to determine the channel bandwidth used for communication with the WLAN AP according to the channel bandwidth supported by the user equipment and the second capability information; the transceiver unit is also configured to send the first channel bandwidth indication information to the base station , wherein the first channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP.

With reference to the sixth aspect and its above-mentioned implementation manners, in a second implementation manner of the sixth aspect, the transceiver unit is further configured to send to the base station first capability information indicating the channel bandwidth that the user equipment can support, so that The base station determines the channel bandwidth used for communication between the user equipment and the WLAN AP according to the first capability information and the second capability information, where the second capability indication information is sent by the WLAN AP to the base station, It is used to indicate the channel bandwidth that the WLAN AP can support.

With reference to the sixth aspect and the above implementation manners, in a third implementation manner of the sixth aspect, the transceiver unit is further configured to receive second channel bandwidth indication information sent by the base station, the second channel bandwidth indication information is used to indicate The channel bandwidth used for communication between the user equipment and the WLAN AP; the device also includes: a determining unit, configured to determine uplink target data according to the second channel bandwidth indication information, wherein the target uplink data is on the bearer all or part of the uplink data; the transceiver unit is specifically configured to send the uplink target data to the WLAN AP, so that the WLAN AP sends the uplink target data to the base station via the GTP tunnel.

With reference to the sixth aspect and its above-mentioned implementation manners, in a fourth implementation manner of the sixth aspect, the transceiver unit is further configured to send channel switching information to the base station, and the channel switching information is used to indicate that the user equipment and the WLAN AP The channel used for inter-communication switches and the time when the switch is completed.

In the seventh aspect, a data transmission system is provided, the system includes: a base station, a bearer for transmitting user equipment data is provided between the base station and a gateway device, and a wireless local area network access point (WLAN AP) between the base station and a wireless local area network access point WLAN AP A General Packet Radio Service Tunneling Protocol (GTP) tunnel is provided, which is used to determine the channel bandwidth used for communication between the user equipment and the WLAN AP, and communicate with the user equipment through the WLAN AP and the user equipment through the GTP tunnel according to the channel bandwidth. transmission of target data, wherein the target data is all or part of the data on the bearer; WLAN AP is configured to transmit the target data of the user equipment with the base station via the GTP tunnel, wherein the target data is based on the user The channel bandwidth used for communication between the device and the WLAN AP is determined, and the target data is all or part of the data on the bearer; the user equipment is used to transmit the target data with the base station via the WLAN AP, wherein, The target data is determined according to the channel bandwidth used for communication between the user equipment and the WLAN AP, the target data is transmitted between the WLAN AP and the base station via the GTP tunnel, and the target data is on the bearer all or part of the data.

According to the method, device and system for transmitting data according to the embodiments of the present invention, after the base station determines that the data of the UE needs to be offloaded through the WLAN AP, the data of the UE (including uplink data or downlink data) is transmitted between the WLAN AP and the GTP tunnel. ), the offloading anchor point can be located at the base station, and the channel bandwidth used for communication between the user equipment and the WLAN AP can be determined by the base station, the base station can determine the offloading traffic according to the channel bandwidth, thereby improving the offloading effect, and, because the WLAN The data distributed by the AP reaches the gateway device through the base station, which can ensure that the gateway device used when establishing a communication connection through the WLAN is the same as the gateway device used when establishing a communication connection through the base station, thereby ensuring business continuity and improving user experience.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a schematic diagram showing the configuration structure of each protocol stack in each device according to an embodiment of the present invention.

Fig. 2a is a schematic diagram showing an example of an aggregation manner of each protocol stack in a base station according to an embodiment of the present invention; Fig. 2b is a schematic diagram showing another example of an aggregation manner of each protocol stack in a base station according to an embodiment of the present invention; A schematic diagram of another example of the aggregation manner of the protocol stacks in the base station of the embodiment of the present invention. FIG. 2d is a schematic diagram showing another example of the aggregation manner of the protocol stacks in the base station of the embodiment of the present invention.

Figure 3a is a schematic diagram showing an example of an aggregation manner of protocol stacks in a user equipment according to an embodiment of the present invention, and Figure 3b is a schematic diagram illustrating another example of an aggregation manner of various protocol stacks in a user equipment according to an embodiment of the present invention, and Figure 3c is Fig. 3d is a schematic diagram showing another example of the aggregation manner of the protocol stacks in the user equipment according to the embodiment of the present invention.

Fig. 4 is a schematic flowchart of a method for transmitting data according to an embodiment of the present invention.

Fig. 5 is a schematic interaction diagram of a downlink data transmission method according to an embodiment of the present invention.

Fig. 6 is a schematic interaction diagram of a method for transmitting uplink data according to an embodiment of the present invention.

Fig. 7 is a schematic flowchart of a method for transmitting data according to another embodiment of the present invention.

Fig. 8 is a schematic flowchart of a method for transmitting data according to yet another embodiment of the present invention.

Fig. 9 is a schematic block diagram of a device for transmitting signals according to an embodiment of the present invention.

Fig. 10 is a schematic block diagram of an apparatus for transmitting signals according to another embodiment of the present invention.

Fig. 11 is a schematic block diagram of an apparatus for transmitting signals according to yet another embodiment of the present invention.

Fig. 12 is a schematic structural diagram of a device for transmitting signals according to an embodiment of the present invention.

Fig. 13 is a schematic structural diagram of a device for transmitting signals according to another embodiment of the present invention.

Fig. 14 is a schematic structural diagram of a device for transmitting signals according to yet another embodiment of the present invention.

FIG. 15 is a schematic architecture diagram of a system for transmitting signals according to an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The technical scheme of the present invention can be applied to various communication systems, such as: Global System for Mobile Communications (GSM, Global System of Mobile communication), Code Division Multiple Access (CDMA, Code Division Multiple Access) system, Wideband Code Division Multiple Access (WCDMA , Wideband Code Division Multiple Access Wireless), General Packet Radio Service (GPRS, General Packet Radio Service), Long Term Evolution (LTE, Long Term Evolution), etc., which are not limited in the present invention.

In the embodiment of the present invention, user equipment (UE, User Equipment), which may also be referred to as a mobile terminal (Mobile Terminal), mobile user equipment, etc., may communicate with one or Multiple core networks communicate, and user equipment can be mobile terminals, such as mobile phones (or called "cellular" phones) and computers with mobile terminals, such as portable, pocket, handheld, computer built-in or vehicle-mounted Mobile devices that exchange speech and/or data with the radio access network, which is not limited by the present invention.

The base station can be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or a base station (Node B) in WCDMA, or an evolved base station (eNB or e-Node B, evolutionNode B) in LTE , the present invention is not limited.

In the embodiment of the present invention, in order to offload the data of the base station, in the communication system of the present invention, a wireless local area network access point (WLAN AP, Wireless Local Area Network Access Point) needs to be set, and the wireless local area network access point , may be, for example, an access point in Wireless Fidelity (WiFi, Wireless Fidelity), which is not limited in the present invention. Hereinafter, for the convenience of understanding and description, it is referred to as AP for short.

In the embodiment of the present invention, during the downlink, the base station may transmit data that needs to be offloaded to the AP, and send the data to the UE through the AP. During the uplink, the UE can send the data that needs to be offloaded to the AP, and send the data to the base station through the AP. Therefore, in the embodiment of the present invention, the base station and the AP need to configure a protocol stack for communicating with each other, and similarly, the UE and the AP need to configure a protocol stack for communicating with each other.

FIG. 1 is a schematic diagram showing the configuration structure of each protocol stack in each device according to an embodiment of the present invention.

As shown in Fig. 1, in the embodiment of the present invention, the general packet radio service tunneling protocol (GTP, General Packet Radio Service Tunneling Protocol) communication mode can be adopted between the base station and the AP to communicate (specifically, it is transmission offloading) data), therefore, in the base station and the AP, a protocol stack for realizing the GTP communication can be set.

As shown in Fig. 1, in the embodiment of the present invention, the wireless local area network communication method can be used between the UE and the AP to communicate (specifically, to transmit the offloaded data). Therefore, in the UE, it can be set to implement The protocol stack of the wireless local area network communication, for example, the WiFi protocol stack. Since the UE and the AP adopt a wireless local area network communication mode, the time-frequency resources used in the wireless local area network communication mode are different from the time-frequency resources used in the communication between the UE and the base station, so that the offloading of the base station can be realized.

Next, the configuration structure of the protocol stack in the base station will be described.

Optionally, the base station has a first base station side protocol stack and a second base station side protocol stack, the first base station side protocol stack is used to implement data processing for communication with the user equipment on the base station side, and the second base station side protocol stack The protocol stack is used to implement data processing for communication with the WLAN AP on the base station side, wherein the second base station side protocol stack is connected to at least one protocol layer of the first base station side protocol stack, and

The base station transmits target data with the user equipment through the WLAN AP via the GTP tunnel, including:

The base station transmits target data with the user equipment through the WLAN AP through at least one layer of the first base station side protocol stack and the second base station side protocol stack via the GTP tunnel.

Specifically, the base station includes a first base station side protocol stack and a second base station side protocol stack.

As the first base station side protocol stack, the base station protocol stack can be cited. It should be understood that the base station protocol stack is only an exemplary description, and the present invention is not limited thereto. The protocol stack for implementing the communication between the base station and the user equipment on the side falls within the protection scope of the present invention. In addition, the above-mentioned communication between the base station and the user equipment includes communication between a core network access node capable of performing base station functions and the user equipment, for example, a relay node (RN, Relay Node) capable of communicating with the user equipment and the user equipment communication between.

As the second base station side protocol stack, all or part of the protocol layers of the GTP protocol stack may be used, wherein the second base station side protocol stack may be directly aggregated on at least one protocol layer of the first base station side protocol stack through an internal interface, or , the second base station side protocol stack may be aggregated on at least one protocol layer of the first base station side protocol stack through an adaptation layer, and the function of the adaptation layer will be described in detail later.

Therefore, during uplink, since the data transmitted via the second base station side protocol stack needs to pass through at least one layer of the first base station side protocol stack before being transmitted to the core network (or gateway device), the format of the data can be Convert to a data format that conforms to the existing communication between the base station and the gateway device, that is, the data format sent to the gateway device after being processed by at least one layer of the protocol stack on the first base station side (for example, format conversion processing).

In addition, in the uplink, if the data of the same UE is transmitted through both the first base station side protocol stack and the second base station side protocol stack, at least one protocol layer of the first base station side protocol stack can be used to transmit data via the first base station side protocol stack. The data transmitted by the side protocol stack and the data transmitted via the second base station side protocol stack are aggregated, and then the process will be described in detail.

Moreover, in the downlink, if the data of the same UE is transmitted through both the first base station side protocol stack and the second base station side protocol stack, at least one protocol layer of the first base station side protocol stack can be used to transmit data via the first base station side protocol stack. The data transmitted by the side protocol stack and the data transmitted via the second base station side protocol stack are bearer distinguished and the sequence number of the data packet is set. Subsequently, the process will be described in detail.

Optionally, in this embodiment of the present invention, at least one protocol layer of the first base station side protocol stack includes at least one of the following protocol layers:

Packet Data Convergence Protocol PDCP layer, Radio Link Control RLC layer or Media Access Control MAC layer.

Specifically, in this embodiment of the present invention, part or all of the protocol layers of the GTP protocol stack may be used as the second base station side protocol stack, and, in this embodiment of the present invention, the second base station side protocol stack may include a user plane The protocol stack may also include a user plane protocol stack and a control plane protocol stack, which are not particularly limited in the present invention. In the following, the second base station protocol stack is used as an example of a user plane protocol stack (GTP-U protocol stack). Therefore, for example, when using the base station protocol stack as the first base station protocol stack, the GTP-U The U protocol stack needs to be aggregated in the user plane protocol stack of the base station.

In the embodiment of the present invention, the user plane General Packet Radio Service Tunneling Protocol (GTP-U, General Packet Radio Service Tunneling Protocol for the user plane) is used for transmission protocol data unit (T-PDU, Transport PDU) between two nodes transmission. The Tunnel Endpoint Identifier (TEID, TunnelEndpoint Identifier) in the GTP header is used to indicate the tunnel to which the T-PDU belongs, so as to implement GTP-U to multiplex and demultiplex packets at both ends of the tunnel. The TEID value used in the TEID field is obtained through negotiation, and the GTP tunnel allows multiplexing of different users, different packet protocols and different quality of service (QoS, Quality of Service) levels. T-PDU packets are encapsulated in G-PDU for transmission. A G-PDU packet consists of a GTP-U header and a T-PDU. The path protocol defines the path, and the GTP-U header defines the tunnel. Multiple tunnels can be multiplexed onto one path. , here, the structure of the GTP-U protocol stack may be the same as or similar to that of the prior art, and here, in order to avoid redundant description, its description is omitted. Hereinafter, descriptions of the same or similar cases are omitted.

The user plane protocol stack of the base station mainly includes Packet Data Convergence Protocol (PDCP, Packet Data Convergence Protocol) layer, radio link control (RLC, Radio Link Control) layer, media access control (MAC, Media Access Control) layer and physical (PHY , Physical) layer. The PDCP layer is mainly used to compress and decompress/encrypt and decrypt information; the RLC layer is mainly used to implement the related functions of Automatic Repeat Request (ARQ, Automatic Repeat Request), segment and concatenate information or segment and class The MAC layer is mainly used to select the transmission format combination, and realize the related functions of scheduling and Hybrid Automatic Repeat Request (HARQ, Hybrid Automatic Repeat Request); the PHY layer is mainly used to provide information transmission for the MAC layer and the upper layer For services, code modulation processing or demodulation decoding processing is performed according to the selected transmission format combination. It should be noted that since the transmission format of the second base station protocol stack is different from that of the base station protocol stack, the encoding and modulation processing or demodulation and decoding processing are also different, so that the second base station side protocol stack does not need to be aggregated in the base station protocol stack. The PHY layer of the stack.

Therefore, in the embodiment of the present invention, the second base station side protocol stack can be aggregated on any one of the above PDCP layer, RLC layer or MAC layer.

Optionally, in this embodiment of the present invention, the second base station side protocol stack may be directly connected to at least one protocol layer of the first base station side protocol stack through an internal interface. Specifically, if the data transmitted between the base station and the AP does not need to be converted (for example, format) when passing through at least one protocol layer of the second base station side protocol stack and the first base station side protocol stack, the The second base station side protocol stack is directly connected to at least one protocol layer in the first base station side protocol stack.

In the case where the user plane protocol stack (GTP-U protocol stack) of the GTP protocol stack is used as the second base station side protocol stack, and the user plane protocol stack of the base station protocol stack is used as the first base station side protocol stack, as an example, Without limitation, for example, as shown in FIG. 2a, the GTP-U protocol stack may be aggregated at the PDCP layer of the base station protocol stack. For another example, as shown in FIG. 2b, the GTP-U protocol stack may be aggregated at the RLC layer of the base station protocol stack. For another example, as shown in FIG. 2c, the GTP-U protocol stack may be aggregated in the MAC layer of the base station protocol stack.

Optionally, the first base station side protocol stack includes a reordering layer, the reordering layer is used to determine the position of the target data in all data on the bearer, and at least one protocol layer of the first base station side protocol stack is the reordering layer, and

The base station transmits target data with the user equipment through the WLAN AP via the GTP tunnel, including:

The base station uses the reordering layer to determine the position of the downlink target data in the target data among all the downlink data on the bearer, and the reordering layer generates first position indication information, where the first position indication information is used to indicate the downlink target The location of the data in all downlink data on the bearer;

The base station sends the first location indication information to the WLAN AP, so that the user equipment determines the location of the downlink target data in all downlink data on the bearer according to the first location indication information forwarded by the WLAN AP.

And, the base station sends the first location indication information to the WLAN AP, including:

The base station encapsulates the first location indication information and the downlink target data in the same data packet and sends it to the WLAN AP through the reordering layer.

Optionally, the first base station side protocol stack includes a reordering layer, the reordering layer is used to determine the position of the target data in all data on the bearer, and at least one protocol layer of the first base station side protocol stack is the reordering layer, and

The base station transmits target data with the user equipment through the WLAN AP via the GTP tunnel, including:

The base station obtains the second position indication information forwarded by the WLAN AP through the reordering layer, where the second position indication information is used to indicate the position of the uplink target data in the target data among all the uplink data on the bearer;

The base station determines the position of the uplink target data in all uplink data on the bearer according to the second position indication information, the second position indication information is determined by the user equipment and sent to the WLAN AP.

And, the base station obtains the second location indication information forwarded by the WLAN AP through the reordering layer, including:

The base station obtains the second location indication information from the data packet encapsulated with the uplink target data through the reordering layer.

Specifically, in the embodiment of the present invention, in addition to the entire protocol stack of the base station protocol stack (including the above-mentioned PDCP layer, RLC layer, MAC layer and PHY layer), the first base station side protocol stack can also have another protocol layer ( reordering layer) to convert the data transmitted through the second base station side protocol stack into a data format that conforms to the existing communication between the base station and the gateway device.

In the uplink, the data of the same UE is transmitted through both the first base station side protocol stack and the second base station side protocol stack, and the reordering layer can be used to compare the data transmitted through the first base station side protocol stack The data transmitted by the protocol stack is aggregated (in other words, the bearer of each data is confirmed, so as to be sorted according to the bearer), and then the process is described in detail.

In the downlink, the data of the same UE is transmitted through both the first base station side protocol stack and the second base station side protocol stack, and the reordering layer can be used to compare the data transmitted through the first base station side protocol stack The data transmitted by the protocol stack is distinguished by bearer and the serial number of the data packet is set, and then the process is described in detail.

In the case where the user plane protocol stack (GTP-U protocol stack) of the GTP protocol stack is used as the second base station side protocol stack, and the user plane protocol stack of the base station protocol stack is used as the first base station side protocol stack, as an example, Without limitation, for example, as shown in FIG. 2d, the GTP-U protocol stack may be aggregated in the reordering layer of the base station protocol stack.

Taking the base station obtaining data from the core network and sending it to the user equipment as an example, the base station can use the S1 interface to connect to the core network, and can obtain data from the core network through the S1 interface, and then pass at least one protocol layer of the base station protocol stack and GTP - The U protocol stack processes the data, and sends the processed data to the AP equipped with the GTP protocol stack in the GTP communication mode, so that the AP can use the wireless LAN communication mode to send the data to the UE, and then send the data to the UE. The process is described in detail.

Taking the base station receiving the data sent by the user equipment and sending it to the core network as an example, the base station can use the S1 interface to connect to the core network, and the AP equipped with the GTP protocol stack can receive the data sent by the UE through wireless local area network communication, and can use The GTP communication method sends the data to the base station, and the base station can process the data through the GTP-U protocol stack and at least one protocol layer of the base station protocol stack, and send the processed data to the core network through the S1 interface, and then The process is described in detail.

Optionally, the second base station side protocol stack includes an adaptation layer, and the adaptation layer is used to convert data between at least one protocol layer of the first base station side protocol stack and the second base station side protocol stack Processing, the second base station side protocol stack is connected to at least one protocol layer of the first base station side protocol stack through the adaptation layer; and

The base station transmits target data with the user equipment through the WLAN AP through at least one layer of the first base station side protocol stack and the second base station side protocol stack through the GTP tunnel, including:

The base station inputs downlink target data into at least one protocol layer of the first base station side protocol stack, and converts the data format of the data output from at least one protocol layer of the first base station side protocol stack into the first base station side protocol stack through the adaptation layer The second base station side protocol stack can recognize the data format, and transmit it to the second base station side protocol stack, and send the data output from the second base station side protocol stack to the WLAN AP through the GTP tunnel, so as to send it through the WLAN AP to the user device, or

The base station inputs the data acquired from the WLAN AP via the GTP tunnel to the second base station side protocol stack, and converts the data format of the data output from the second base station side protocol stack to the first base station through the adaptation layer A data format that can be recognized by at least one protocol layer of the side protocol stack, and transmits to at least one protocol layer of the first base station side protocol stack, so as to obtain the uplink target data of the user equipment.

Specifically, as shown in FIGS. 2a to 2d, if the data transmitted between the base station and the AP needs to be performed when passing through at least one protocol layer of the second base station side protocol stack and the first base station side protocol stack (such as , format) conversion, then according to the format of the data output by at least one protocol layer of the first base station side protocol stack and the format of the data output by the second base station side protocol stack, at least one protocol of the first base station side protocol stack Between the layer and the second base station side protocol stack, an adaptation layer (adaptation layer) for format conversion is added, for example, as an example rather than limitation, if the GTP-U protocol stack is aggregated on the PDCP layer of the base station protocol stack, Then the adaptation layer can be used to perform format conversion processing on the data between the PDCP layer and the GTP-U protocol stack. It should be understood that the connection manners listed above are only illustrative, and the present invention is not limited thereto. If the GTP-U protocol stack is aggregated on the RLC layer of the base station protocol stack, the adaptation layer can be used to convert data between the RLC layer and the GTP-U protocol stack.

Taking the base station obtaining data from the core network and sending it to the user equipment as an example, the base station can use the S1 interface to connect to the core network, and can obtain data from the core network through the S1 interface, and then through at least one protocol layer of the base station protocol stack, the adaptive The distribution layer and the GTP-U protocol stack process the data, and send the processed data to the AP equipped with the GTP protocol stack in the GTP communication mode, so that the AP can use the wireless LAN communication mode to send the data to UE, the process will be described in detail later.

Taking the base station receiving the data sent by the user equipment and sending it to the core network as an example, the base station can use the S1 interface to connect to the core network, and the AP equipped with the GTP protocol stack can receive the data sent by the UE through wireless local area network communication, and can use The GTP communication method sends the data to the base station, and the base station can process the data through at least one protocol layer of the GTP-U protocol stack, the adaptation layer and the base station protocol stack, and send the processed data to the core through the S1 interface network, and the process is described in detail later.

In this way, by setting the adaptation layer, the conversion of data between the GTP-U protocol stack and the base station protocol stack can be ensured, and the configuration of the GTP-U protocol stack in the base station can be made more flexible.

In the embodiment of the present invention, the GTP-U protocol stack can be set in an existing base station (for example, Node B) to constitute a new access node Node C (the specific connection method is as described above).

On the other hand, in the embodiment of the present invention, the GTP-U protocol stack can also be set at the access network entity outside the Node B, and communicate with the base station protocol stack (at least one protocol layer) set in the Node B through an optical fiber, etc. For example, as an example rather than limitation, in a heterogeneous network (HetNet), the base station protocol stack can be set in the macro base station (Macro), and the GTP-U protocol stack can be set in other access nodes connected to the Node B Among the nodes, Node B and other access nodes configured with the GTP-U protocol stack together constitute Node C. In the embodiment of the present invention, the other access nodes connected to Node B may include micro-stations Micro and femto-stations Pico .

Moreover, in this case, multiple Node Bs can share the GTP-U protocol stack set in one Micro station or Femto station Pico. In addition, when the Node B is connected to a Node C (via optical fiber, etc.), the Node B can also use the GTP-U protocol stack set in the Node C.

In this way, there is no need to modify the existing Node B, and the modification work of setting the GTP-U protocol stack in the existing access node is reduced, thereby improving the practicability of the present invention.

Moreover, in the HetNet system, according to the statistical characteristics of network service distribution, some nodes use NodeB and some nodes use Node C. Node C can also connect certain access nodes through optical fibers to expand the coverage.

Next, the configuration structure of the protocol stack in the AP will be described.

Optionally, the WLAN AP has a first WLAN AP side protocol stack and a second WLAN AP side protocol stack, and the first WLAN AP side protocol stack is used to implement data processing for communication with the base station on the WLAN AP side, The second WLAN AP side protocol stack is used to implement data processing for communication with the user equipment on the WLAN AP side, and

The WLAN AP transmits target data of the user equipment with the base station via the GTP tunnel, including:

The WLAN AP transmits the target data of the user equipment between the first WLAN AP side protocol stack and the base station;

The WLAN AP transmits the target data between the user equipment and the second WLAN AP side protocol stack.

Specifically, the AP includes a first WLAN AP-side protocol stack and a second WLAN AP-side protocol stack.

As the second WLAN AP side protocol stack, a protocol stack for realizing the wireless local area network communication can be listed, for example, a WiFi protocol stack. It should be understood that the WiFi protocol stack is only an example, and the present invention is not limited thereto. Other protocol stacks capable of realizing communication between the AP and the user equipment at the side of the AP (or in other words, the access node of the wireless local area network) all fall within the protection scope of the present invention.

In the embodiment of the present invention, as an example rather than a limitation, the WiFi protocol stack may include: a Logical Link Control (LLC, Logical Link Control) layer, a Media Access Control (MAC, Media Access Control) layer, a physical layer (PHY, Physical Layer), where the main function of the LLC layer is to ensure and control transmission reliability, segment and reassemble data packets, and sequentially transmit data packets. The main function of the MAC layer is to provide users with reliable data transmission on unreliable media, provide distributed coordination functions, centralized control access mechanisms, and encryption services, interception and avoidance, power control, etc. The main function of the physical layer is to perform the aggregation process of the physical layer to map the data block to the appropriate physical frame format, and perform encoding and modulation processing or demodulation and decoding processing.

As the first WLAN AP side protocol stack, part or all of the protocol layers of the GTP protocol stack can be used, and, in this embodiment of the present invention, the first WLAN AP side protocol stack can include a user plane protocol stack, and can also include a user plane protocol stack. The protocol stack of the control plane and the protocol stack of the control plane are not particularly limited in the present invention. Hereinafter, description will be made by taking the first WLAN AP side protocol stack as a user plane protocol stack (GTP-U protocol stack) of the GTP protocol stack as an example.

In the embodiment of the present invention, the user plane general packet service tunneling protocol GTP-U protocol stack is used for the transmission of the transmission protocol data unit between two nodes. The tunnel terminal identifier TEID in the GTP header is used to indicate the tunnel to which the T-PDU belongs, so as to realize GTP-U multiplexing and demultiplexing packets at both ends of the tunnel. The TEID value used in the TEID field is obtained through negotiation, and the GTP tunnel allows multiplexing of different users, different packet protocols, and different service quality levels. T-PDU packets are encapsulated in G-PDU for transmission. A G-PDU packet consists of a GTP-U header and a T-PDU. The path protocol defines the path, and the GTP-U header defines the tunnel. Multiple tunnels can be multiplexed on one path. Here, the structure of the GTP-U protocol stack can be the same as or similar to that of the prior art. Here, in order to avoid redundant description, its description is omitted. Hereinafter, descriptions of the same or similar cases are omitted.

For example, the AP obtains data from the base station and sends it to the user equipment. The AP can obtain the data packet from the base station through the GTP tunnel, and analyze the data packet through the GTP-U protocol stack to obtain the data that the base station needs to send to the UE. Afterwards, the AP can encapsulate the data through the WiFi protocol stack, and send the data to the UE through wireless local area network communication, and then describe the process in detail.

For example, the AP obtains data from the user equipment and sends it to the base station. The AP can receive the data packet sent by the UE through the wireless LAN communication method, and analyze the data packet through the WiFi protocol stack to obtain the data that the UE needs to send to the base station. Afterwards, the AP can encapsulate the data through the GTP-U protocol stack, and send the data to the base station by means of GTP communication, and the process will be described in detail later.

It should be noted that, in this embodiment of the present invention, an adaptation layer is provided between the first WLAN AP side protocol stack and the second WLAN AP side protocol stack, and the adaptation layer is used to perform data processing on the second WLAN AP side protocol stack. Conversion processing between a WLAN AP side protocol stack and the second WLAN AP side protocol stack; and

The WLAN AP transmits the target data of the user equipment between the first WLAN AP side protocol stack and the base station, including:

The WLAN AP inputs the data obtained from the base station into the first WLAN AP side protocol stack, and converts the data format of the data output from the first WLAN AP side protocol stack into the second WLAN AP side protocol through the adaptation layer A data format that can be recognized by the stack, and transmit it to the second WLAN AP side protocol stack, and send the data output from the second WLAN AP side protocol stack to the user equipment, or

The WLAN AP inputs the data obtained from the user equipment to the second WLAN AP side protocol stack, and converts the data format of the data output from the second WLAN AP side protocol stack to the first WLAN AP side protocol stack through the adaptation layer. The data format that the protocol stack can recognize is transmitted to the protocol stack on the first WLAN AP side, and the data output from the protocol stack on the first WLAN AP side is sent to the base station.

Specifically, if the data needs to be converted (for example, format) when passing through the first WLAN AP side protocol stack and the second WLAN AP side protocol stack, the data output from the first WLAN AP side protocol stack can be For the format and the format of the data output by the second WLAN AP side protocol stack, an adaptation layer for format conversion is added between the first WLAN AP side protocol stack and the second WLAN AP side protocol stack. For example, during the downlink, the adaptation layer can convert the format of the data output from the GTP-U protocol stack into a data format that the WiFi protocol stack can process; The format of the data is converted into a data format that can be processed by the GTP-U protocol stack.

In this way, by setting the adaptation layer, the format conversion of data between the GTP-U protocol stack and the WiFi protocol stack can be ensured, and the configuration of the GTP-U protocol stack in the AP can be made more flexible.

In the embodiment of the present invention, the GTP-U protocol stack can be set in an existing AP to form a new access node (the specific connection method is as described above).

On the other hand, in the embodiment of the present invention, the GTP-U protocol stack can also be set in a network entity outside the AP, and connected to the WiFi protocol stack in the set AP through an optical fiber or the like.

Also, in this case, multiple APs can share the GTP-U protocol stack set in one network entity.

In this way, there is no need to modify the existing AP, and the modification work of setting the GTP-U protocol stack in the existing AP is reduced, thereby improving the practicability of the present invention.

Next, the configuration structure of the protocol stack in the user equipment UE will be described.

Optionally, the user equipment has a first user equipment side protocol stack and a second user equipment side protocol stack, and the first user equipment side protocol stack is used to implement data processing for communication with the base station on the user equipment side, The second user equipment side protocol stack is used to implement data processing for communication with the WLAN AP on the user equipment side, wherein at least one protocol of the second user equipment side protocol stack and the first user equipment side protocol stack layers connected, and

The user equipment transmits the target data with the base station via the WLAN AP, including:

The user equipment transmits target data with the base station via the WLAN AP through at least one layer of the first user equipment side protocol stack and the second user equipment side protocol stack.

Specifically, the UE includes a first user equipment side protocol stack and a second user equipment side protocol stack.

As the first user equipment side protocol stack, a user equipment protocol stack (specifically, a user plane protocol stack of the user equipment protocol stack) can be listed. It should be understood that the user equipment protocol stack is only an exemplary description, and the present invention does not Not limited thereto, other protocol stacks capable of implementing communication between the base station and the user equipment at the user equipment side fall within the protection scope of the present invention. In addition, the above-mentioned communication between the base station and the user equipment includes communication between a core network access node capable of performing base station functions and the user equipment, for example, a relay node (RN, Relay Node) capable of communicating with the user equipment and the user equipment communication between.

The user plane protocol stack of the user equipment protocol stack mainly includes a packet data convergence protocol PDCP layer, a radio link control RLC layer, a media access control MAC layer and a physical PHY layer. The PDCP layer is mainly used to compress and decompress/encrypt and decrypt information; the RLC layer is mainly used to realize the related functions of automatic repeat request ARQ, segment and concatenate information or reorganize segment and concatenate information ;The MAC layer is mainly used to select the combination of transmission formats to realize the related functions of scheduling and hybrid automatic repeat request HARQ; the PHY layer is mainly used to provide information transmission services for the MAC layer and higher layers, and encode according to the selected combination of transmission formats Modulation processing or demodulation decoding processing. It should be noted that since the transmission format of the second user equipment side protocol stack is different from the transmission format of the user equipment protocol stack, the encoding and modulation processing or demodulation and decoding processing are also different, so the second user equipment side protocol stack does not need to be aggregated In the PHY layer of the user equipment protocol stack.

As the second user equipment side protocol stack, all or part of the protocol layers of the WiFi protocol stack can be used, wherein the second user equipment side protocol stack can be directly aggregated or directly connected to at least the first user equipment side protocol stack through an internal interface On one protocol layer, or, the second user equipment side protocol stack may be aggregated on at least one protocol layer of the first user equipment side protocol stack through an adaptation layer, and the function of the adaptation layer will be described in detail later.

In the embodiment of the present invention, as an example but not a limitation, the WiFi protocol stack may include: a logical link control LLC layer, a media access control MAC layer, and a physical layer PHY, wherein the main function of the LLC layer is to ensure transmission reliability and control, packet segmentation and reassembly, and sequential transmission of packets. The main function of the MAC layer is to provide users with reliable data transmission on unreliable media, provide distributed coordination functions, centralized control access mechanisms, and encryption services, interception and avoidance, power control, etc. The main function of the physical layer is to perform the aggregation process of the physical layer to map the data block to the appropriate physical frame format, and perform encoding and modulation processing or demodulation and decoding processing.

Therefore, during the downlink, since the data transmitted via the second user equipment side protocol stack needs to pass through at least one layer of the first user equipment side protocol stack, the format of the data can be converted into a data format that can be read by the UE, that is, The data format after decapsulation processing (or format conversion processing) by at least one side of the first user equipment side protocol stack.

Moreover, in the downlink, if data is transmitted through both the second user equipment side protocol stack and the first user equipment side protocol stack, at least one protocol layer of the first user equipment side protocol stack can be used to transmit data via the first user equipment side protocol stack. The data transmitted by the protocol stack on the device side is aggregated with the data transmitted via the protocol stack on the second user equipment side, and then the process will be described in detail.

Moreover, in the uplink, if data is transmitted through both the first user equipment side protocol stack and the second user equipment side protocol stack, at least one protocol layer of the first user equipment side protocol stack can be used to transmit data via the first user equipment side protocol stack. The data transmitted by the protocol stack on the device side is distinguished from the data transmitted by the protocol stack on the second user equipment side and the data packet sequence number is set, and the process is described in detail later.

Optionally, in this embodiment of the present invention, at least one protocol layer of the first user equipment side protocol stack includes at least one of the following protocol layers:

Packet Data Convergence Protocol PDCP layer, Radio Link Control RLC layer or Media Access Control MAC layer

Specifically, in the embodiment of the present invention, part or all of the protocol layers of the WIFI protocol stack may be used as the second user equipment side protocol stack, and, in the embodiment of the present invention, the second user equipment side protocol stack may include The user plane protocol stack may also include a user plane protocol stack and a control plane protocol stack, which are not particularly limited in the present invention. In the following, it will be described by taking the second user equipment side protocol stack as a user plane protocol stack (WIFI protocol stack) as an example. Therefore, for example, when using the user equipment protocol stack as the first user equipment side protocol stack, the WIFI The protocol stack needs to be aggregated in the user equipment protocol stack of the user plane of the UE.

Therefore, in the embodiment of the present invention, the second user equipment side protocol stack may be aggregated on any one of the above PDCP layer, RLC layer or MAC layer.

Optionally, in this embodiment of the present invention, the second user equipment side protocol stack may be directly connected to at least one protocol layer of the first user equipment side protocol stack through an internal interface. Specifically, if the data transmitted between the base station and the AP does not need to perform (for example, format) conversion when passing through at least one protocol layer of the second user equipment side protocol stack and the first user equipment side protocol stack, then it may The second user equipment side protocol stack is directly connected to at least one protocol layer in the first user equipment side protocol stack.

In the case where the user plane protocol stack of the WIFI protocol stack is used as the second user equipment side protocol stack, and the user plane protocol stack of the user equipment protocol stack is used as the first user equipment side protocol stack, as an example rather than limitation, for example , as shown in FIG. 3a, the WIFI protocol stack can be aggregated at the PDCP layer of the user equipment protocol stack. For another example, as shown in FIG. 3b, the WIFI protocol stack may be aggregated at the RLC layer of the user equipment protocol stack. For another example, as shown in FIG. 3c, the WIFI protocol stack may be aggregated in the MAC layer of the user equipment protocol stack.

Optionally, the first base station side protocol stack includes a reordering layer, the reordering layer is used to determine the position of the target data among all the data on the bearer, and at least one protocol layer of the first user equipment side protocol stack for this reordering layer, and

The user equipment transmits the target data with the base station via the WLAN AP, including:

The user equipment determines the position of the uplink target data in the target data among all the uplink data on the bearer through the reordering layer, and the reordering layer generates second position indicating information, and the second position indicating information is used to indicate the uplink The location of the target data in all uplink data on the bearer;

The user equipment sends the second location indication information to the WLAN AP, so that the base station determines the location of the uplink target data in all uplink data on the bearer according to the second location indication information forwarded by the WLAN AP.

And, the user equipment sends the second location indication information to the WLAN AP, including:

The user equipment encapsulates the second location indication information and the uplink target data in the same data packet and sends it to the WLAN AP through the reordering layer.

Optionally, the first base station side protocol stack includes a reordering layer, the reordering layer is used to determine the position of the target data among all the data on the bearer, and at least one protocol layer of the first user equipment side protocol stack for this reordering layer, and

The user equipment transmits the target data with the base station via the WLAN AP, including:

The user equipment acquires first location indication information forwarded by the WLAN AP through the reordering layer, where the first location indication information is used to indicate the location of the downlink target data in the target data among all the downlink data on the bearer;

The user equipment determines the position of the downlink target data in all the downlink data on the bearer according to the first position indication information, the first position indication information is determined by the base station and sent to the WLAN AP.

And, the user equipment obtains the first location indication information forwarded by the WLAN AP through the reordering layer, including:

The user equipment obtains the first location indication information from the data packet encapsulated with the downlink target data through the reordering layer

Specifically, in the embodiment of the present invention, in addition to the entire protocol stack of the user equipment protocol stack (including the above-mentioned PDCP layer, RLC layer, MAC layer and PHY layer), the first user equipment side protocol stack can also set another protocol stack layer (reordering layer), to convert the data transmitted through the second user equipment side protocol stack into a data format that can be read by the existing user equipment.

In the downlink, if data is transmitted through both the first user equipment side protocol stack and the second user equipment side protocol stack, the reordering layer can be used to compare the data transmitted through the first user equipment side protocol stack and the data transmitted through the second user equipment side protocol stack. The data transmitted by the protocol stack on the user equipment side is aggregated (or in other words, the bearer of each data is confirmed, so as to sort according to the bearer), and then the process is described in detail.

In the uplink, if data is transmitted through both the first user equipment side protocol stack and the second user equipment side protocol stack, the data transmitted through the first user equipment side protocol stack and the data transmitted through the second user equipment side protocol stack can be separated through the reordering layer. The data transmitted by the protocol stack on the user equipment side is distinguished by bearer and the serial number of the data packet is set, and then the process is described in detail.

In the case where the user plane protocol stack of the WIFI protocol stack is used as the second user equipment side protocol stack, and the user plane protocol stack of the user equipment protocol stack is used as the first user equipment side protocol stack, as an example rather than limitation, for example , as shown in Figure 3d, the WIFI protocol stack can be aggregated in the reordering layer of the user equipment protocol stack.

Taking the UE sending data to the AP as an example, the UE can process the data through at least one protocol layer of the user equipment protocol stack and the WIFI protocol stack, and send the processed data to the AP through WIFI communication. After that, the AP This data can be sent to the base station, and the process is described in detail later.

Taking the UE receiving the data sent by the AP as an example, the UE can receive the data packet sent by the AP through wireless local area network communication, and can process the data packet through at least one protocol layer of the WIFI protocol stack and the user equipment protocol stack, In order to obtain the data sent by the base station to the UE through the AP, the process will be described in detail later.

Optionally, the second user equipment side protocol stack includes an adaptation layer, and the adaptation layer is used to perform data transfer between at least one protocol layer of the first user equipment side protocol stack and the second user equipment side protocol stack. conversion processing between the second user equipment side protocol stack and at least one protocol layer of the first user equipment side protocol stack are connected through the adaptation layer; and

The user equipment transmits the target data with the base station via the WLAN AP, including:

The user equipment inputs the uplink target data to at least one protocol layer of the first user equipment side protocol stack, and converts the data format of the data output from at least one protocol layer of the first user equipment side protocol stack through the adaptation layer It is a data format that can be recognized by the second user equipment side protocol stack, and is transmitted to the second user equipment side protocol stack, and the data output from the second user equipment side protocol stack is sent to the WLAN AP to pass through the WLAN AP sends to the base station, or

The user equipment inputs the data obtained from the WLAN AP into the second user equipment side protocol stack, and converts the data format of the data output from the second user equipment side protocol stack into the first user equipment through the adaptation layer A data format that can be recognized by at least one protocol layer of the protocol stack on the side of the first user equipment is transmitted to at least one protocol layer of the protocol stack on the first user equipment side to obtain downlink target data.

Specifically, as shown in FIG. 1, if the data transmitted between the UE and the AP needs to be performed when passing through at least one protocol layer of the second user equipment side protocol stack and the first user equipment side protocol stack (for example, Format) conversion, then according to the format of the data output by at least one protocol layer of the first user equipment side protocol stack and the format of the data output by the second user equipment side protocol stack, in at least one protocol layer of the first user equipment side protocol stack Between a protocol layer and the second user equipment side protocol stack, an adaptation layer (adaptation layer) for format conversion is added, for example, as an example rather than limitation, if the WIFI protocol stack is aggregated at the PDCP layer of the user equipment protocol stack above, the adaptation layer can be used to perform format conversion processing on the data between the PDCP layer and the WIFI protocol stack. It should be understood that the connection manners listed above are only illustrative, and the present invention is not limited thereto. If the WIFI protocol stack is aggregated on the RLC layer of the user equipment protocol stack, the adaptation layer can be used to convert data between the RLC layer and the WIFI protocol stack.

Taking the UE sending data to the AP as an example, the UE can process the data through at least one protocol layer, the adaptation layer, and the WIFI protocol stack of the user equipment protocol stack, and send the processed data to the AP through WIFI communication. Thereafter, the AP can send the data to the base station, and the process will be described in detail later.

Taking the UE receiving the data sent by the AP as an example, the UE can receive the data packet sent by the AP through wireless local area network communication, and can pass the WIFI protocol stack, the adaptation layer, and at least one protocol layer of the user equipment protocol stack to the data packet. The packet is processed to obtain the data sent by the base station to the UE through the AP, and the process will be described in detail later.

In this way, by setting the adaptation layer, data conversion between the WIFI protocol stack and the user equipment protocol stack can be ensured, and the configuration of the WIFI protocol stack in the UE can be made more flexible.

Next, the operation of the base station when performing data transmission according to the method for transmitting data according to the embodiment of the present invention will be described.

FIG. 4 shows a schematic flowchart of a method 100 for transmitting data according to an embodiment of the present invention. The method 100 is executed by a base station in a communication system, and the communication system further includes a wireless local area network access point WLAN AP and a user equipment. A bearer for transmitting data of the user equipment is provided between the base station and the gateway device, a General Packet Radio Service Tunneling Protocol (GTP) tunnel is provided between the base station and the WLAN AP, and the method includes:

S110. Determine the channel bandwidth used for communication between the user equipment and the WLAN AP;

S120. According to the channel bandwidth, transmit target data with the user equipment through the WLAN AP via the GTP tunnel, where the target data is all or part of the data on the bearer.

According to the data transmission method of the present invention, the base station determines the channel bandwidth used for communication between the user equipment and the WLAN AP, and determines the target data of the target user equipment that needs to be transmitted through the WLAN AP according to the channel bandwidth; At least one protocol layer of the first base station side protocol stack and the second base station side protocol stack perform encapsulation processing on the downlink target data to generate a first data packet, and send the first data packet to the WLAN AP through the first GTP tunnel , so that the target user equipment receives the second data packet sent by the WLAN AP through the first carrier used for wireless local area network communication, and the second data packet is generated and sent by the WLAN AP after processing the first data packet The downlink target data is all or part of the downlink data on the at least one bearer; and/or the base station receives the third data packet sent by the WLAN AP through the second GTP tunnel, and passes at least the first base station side protocol stack A protocol layer and a second base station side protocol stack decapsulate the third data packet to obtain uplink target data, wherein the third data packet is generated and sent after the WLAN AP processes the fourth data packet The fourth data packet is generated by the target user equipment after encapsulating the uplink target data, and is sent to the WLANAP through the second carrier used for wireless local area network communication, the uplink target data is the at least one bearer All or part of the uplink data.

Specifically, in the embodiment of the present invention, the target user equipment can access the base station, and access the network side (for example, EPC) through the base station, and the gateway device (for example, PDN-GW) on the network side between the base station and the network side through Bearer (for example, Evolved Packet System (EPS, Evolved Packet System) bearer) transmits the data (including uplink data and downlink data) of the target user equipment, and the time-frequency resources provided by the system can be used between the target user equipment and the base station through the air interface. Data transmission, the above process and implementation method may be the same as or similar to the prior art, and here, in order to avoid redundant description, its description is omitted.

S110, the base station may determine whether to offload the data transmission of the target user, that is, transmit all or part of the data of the target user through the AP.

In the embodiment of the present invention, the base station may activate the second base station side protocol stack to perform the above offloading-related processes when the activation condition is satisfied.

In the following, the above activation conditions will be described as an example rather than a limitation.

Condition 1, the base station can monitor the carrier provided by the system for transmitting data (of multiple user equipments accessing the base station), if the ratio of the load to capacity of the downlink carrier exceeds a certain threshold (for example, 1), that is, the capacity of the downlink carrier If the requirement cannot be met, or the ratio of the load to capacity of the uplink carrier exceeds a certain threshold (for example, 1), that is, the capacity of the uplink carrier cannot meet the requirement, it can be determined that the above activation condition is met.

Condition 2: The target user equipment can request the base station to offload its data, and the base station can immediately activate the protocol stack on the second base station side according to the request to perform offload-related procedures, or the base station can also determine whether the above condition 1 is satisfied according to the request , and when the above condition 1 is met, the protocol stack on the second base station side is activated to execute a related process of offloading.

It should be understood that the activation conditions listed above, the parameters used to determine the activation conditions and their thresholds are only an exemplary description of the present invention, and the present invention is not limited thereto.

After determining that the data of the target user equipment needs to be offloaded, the base station can determine the offloaded amount that needs to be offloaded. That is, the base station can determine the channel bandwidth used by the wireless local area network communication between the target user equipment and the AP (or in other words, the highest transmission rate of the wireless local area network communication between the target user equipment and the AP), for example, can make the offloaded traffic less than Equal to the channel bandwidth determined above.

In the embodiment of the present invention, the channel bandwidth may be determined after negotiation between the target user and the AP and reported to the base station (that is, case A), or the channel bandwidth may be determined by the base station according to the communication capabilities of the target user and the communication of the AP. When the capability is determined (ie, case B), the actions and processes of the above two cases will be described below respectively.

Case A

Optionally, determining the channel bandwidth used for communication between the user equipment and the WLAN AP includes:

receiving the first channel bandwidth indication information sent by the user equipment or the WLAN AP, where the first channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP, and the channel bandwidth is determined by the Determined after negotiation between the user equipment and the WLAN AP;

According to the first channel bandwidth indication information, determine the channel bandwidth used for communication between the user equipment and the WLAN AP.

In the embodiment of the present invention, since the channel bandwidth is determined after negotiation between the target user and the AP, both the target user and the AP can know the channel bandwidth, so that the channel bandwidth can be determined by any party in the target user and the AP. Notifying the base station is not particularly limited in the present invention. For the convenience of understanding and description, the following uses an example in which the user equipment notifies the base station of the channel bandwidth to be described.

In addition, in the embodiment of the present invention, the wireless local area network communication between the UE and the AP may use various existing communication versions, for example, 802.11a/b/g version, 802.11n version or 802.11ac version.

For example, in the 802.11n version (an example of WLAN communication), channel bandwidths of 20 megahertz (MHz) and 40 MHz are available, and a 40 MHz channel consists of two adjacent 20 MHz channels to achieve higher transmission data rates. Moreover, before using the 40MHz channel, the AP needs to determine that the two adjacent 20MHz channels are not used by other communication devices (for example, other APs or Bluetooth communication devices, etc.).

Three communication modes are defined in the 802.11n version:

High Throughput (HT, High Throughput) mode: AP and UE can support the use of 802.11n version, and can achieve high throughput.

Non-High Throughput (Non-HT, Non-High Throughput) mode: APs and UEs do not support 802.11n version, but versions such as 802.11a/b/g cannot support high throughput.

Mixed high throughput (HT Mixed, High Throughput Mixed) mode: AP and UE can support 802.11n and versions such as 802.11a/b/g at the same time.

A UE with HT capability (or support 802.11n version) can declare its HT capability to the AP through the HT Capabilities (Capabilities) information element, for example, whether it supports 40MHz bandwidth operation, whether it can tolerate 40MHz bandwidth, supported modulation and coding Policy (MCS, Modulation and Coding Scheme) type, whether to support multiple inputs and multiple outputs, etc., the AP can determine the operation mode of the UE according to the HT capability of the UE.

In the following, for ease of understanding and description, the communication version between the UE and the AP is 802.11n as an example for description.

In the embodiment of the present invention, the base station may instruct the UE and the WLAN AP to negotiate an operation mode through, for example, radio resource control (RRC, Radio Resource Control) dedicated signaling or system broadcast signaling. The process of negotiating and determining the channel bandwidth between the UE and the AP can be performed when the UE accesses the AP. In this case, for example, the eNB can use the Basic Service Set Identifier (BSSID, Basic Service Set Identifier) or service set identifier of the WLAN AP (SSID, Service SetIdentifier) to the UE, so that the UE can determine and access the AP according to the BSSID or SSID.

In this embodiment of the present invention, for example, for a passive scanning UE, a Probe Request message (ProbeRequest) or an Association Request message (Association Request) may be sent to the AP, and the above message may carry the following information:

High throughput capability information (HT Capabilities);

20/40 Basic Service Set Coexistence (20/40BSS Coexistence).

Among them, 20/40BSS Coexistence can contain the following cells:

An information request information element (Information Request), used to indicate whether the UE requests a 20/40 BSS Coexistence Management Frame (20/40BSS Coexistence Management Frame);

40MHz tolerance indication (40MHz Intolerant), which is used to indicate whether the UE prevents 20/40MHz operation. It should be noted that this indication is used in the communication scenario of the basic service set (inter-BSS);

A 20MHz BSS Width Request (20MHz BSS Width Request) is used to indicate whether the UE requests to communicate through a channel bandwidth of 20MHz.

Overlapping Basic Service Set Scanning Exemption Request (Overlapping Basic Service Set Scanning Exemption Request), used to indicate whether the UE requests overlapping basic service set scanning.

Overlapping Basic Service Set Scanning Exemption Grant (Overlapping Basic Service Set Scanning Exemption Grant), used to indicate whether the UE allows overlapping basic service set scanning.

It should be understood that the information elements contained in the 20/40BSS Coexistence listed above are only illustrative, and the present invention is not limited thereto. Various cells.

HT Capabilities can contain the following information elements:

The supported channel bandwidth operation (Supported Channel Width Set) is used to indicate that the UE supports receiving and sending 40MHz physical layer protocol data unit (PPDU, Physical Layer Convergence Procedure protocol data unit) or only supports receiving and sending 40MHz PPDU;

Spatial Multiplexing Power Save (SM Power Save, Spatial Multiplexing Power Save), used to indicate whether the UE supports the power saving mode of spatial multiplexing;

20MHz guard interval (Short Guard Interval for20MHz,), used to indicate whether the UE supports the guard interval under 20MHz;

40MHz guard interval (Short Guard Interval for40MHz,), used to indicate whether the UE supports the guard interval under 40MHz;

The supported MCS type (Supported MCS Set), used to indicate the MCS type supported by the UE;

HT Extended Capabilities (HT Extended Capabilities), used to indicate the extended HT capabilities of the UE.

It should be understood that the information elements contained in the HT Capabilities listed above are only illustrative, and the present invention is not limited thereto. The HT Capabilities of the present invention may contain various information elements similar to the HT Capabilities in the prior art.

After receiving the Probe Request or Association Request sent by the UE, the AP determines and sends the Probe Response or Association Response message for the UE according to the above HTCapabilities and 20/40BSS Coexistence,

For example, when the following determination conditions are met, the AP can determine that the communication with the UE can use the 20/40MHz communication mode:

a. Both the AP and the UE can support the 20/40MHz communication mode, or in other words, the Supported Channel Width Set in the HT Capabilities of the AP and the UE indicates that it supports receiving and sending 40MHz PPDU (for example, the SupportedChannel Width Set is set to a non-zero value) ;

b. There is a valid secondary carrier in the wireless communication system (for example, not occupied by other APs), or in other words, the Secondary Channel Offset in the HTOperation can indicate a valid secondary carrier.

It should be understood that the determination conditions listed above are only illustrative, and the present invention is not limited thereto, and other methods that can be used to determine the channel bandwidth for communication between the AP and the UE fall within the protection scope of the present invention.

And, Probe Response or Association Response contains the following information:

HT Capabilities;

HT Operation (HT Operation);

20/40BSS Coexistence;

Overlapping BSS Scan Parameters;

Extended Capabilities;

Among them, the functions of the above-mentioned HT Capabilities, 20/40BSS Coexistence and Extended Capabilities are similar to those of the HT Capabilities, 20/40BSS Coexistence and Extended Capabilities in the Probe Request or Association Request, and here, in order to avoid redundant description, their descriptions are omitted.

And, HT Operation includes the following information elements:

The channel number of the primary channel (Primary Channel), which is used to indicate the primary channel determined by the AP;

Secondary Channel Offset (Secondary Channel Offset), used to indicate the offset of the secondary channel relative to the main channel;

The channel width (Channel Width) is used to indicate whether the channel bandwidth that the UE can use is 20MHz bandwidth or 40MHz bandwidth, or in other words, the UE can only use the main channel or both the main channel and the auxiliary channel.

Therefore, the UE reports the acquired HT Operation (an example of the first channel bandwidth indication information) to the base station. The base station can determine the channel bandwidth used for communication between the UE and the AP according to the HT Operation (specifically, Channel Width).

It should be understood that the specific content of the first channel bandwidth indication information listed above is only exemplary, and the present invention is not limited thereto. For example, the UE evaluates the maximum transmission rate according to the acquired HT Operation parameter. For example, if the Channel Width indicates If the usable channel bandwidth is 40 MHz, it can be determined that the maximum transmission rate is 40 Mbps, and the maximum transmission rate (another example of the first channel bandwidth indication information) can be reported to the base station. Moreover, the maximum transmission rate can be an absolute value, such as 40Mbps, or a relative value, for example, three thresholds of low, medium and high can be set, and if the maximum rate exceeds the rate value corresponding to the "high" threshold , then send the rate value corresponding to the "high" threshold to the base station.

Thus, the base station can determine the channel bandwidth (or communication mode) for communication between the UE and the AP.

Case B

Optionally, determining the channel bandwidth used for communication between the user equipment and the WLAN AP includes:

receiving the first capability information sent by the user equipment and used to indicate the channel bandwidth that the user equipment can support;

receiving second capability information sent by the WLAN AP and used to indicate the channel bandwidth that the WLAN AP can support;

According to the first capability information and the second capability information, determine the channel bandwidth used for communication between the user equipment and the WLAN AP.

Specifically, for example, before the UE accesses the AP, the UE may send the above-mentioned HT Capabilities (an example of the first capability information) to the base station, and the AP may send the above-mentioned HT Capabilities (an example of the second capability information) to the base station, so that, The base station can determine the channel bandwidth for communication between the UE and the AP according to the HT Capabilities sent by the UE and the HT Capabilities sent by the AP. For example, if both the UE and the AP support receiving and sending 40MHz PPDUs, the AP can determine the communication between the UE and the AP. The channel bandwidth is above 20MHz, such as 40MHz. For another example, if the AP supports receiving and sending 40MHz PPDUs, but the UE does not support receiving and sending 40MHz PPDUs but only supports receiving and sending 20MHz PPDUs, the AP can determine that the channel bandwidth for communication between the UE and the AP is below 20MHz.

It should be understood that the HT Capabilities listed above as the first capability information and the second capability information are only exemplary descriptions, and the present invention is not limited thereto, and other information that can indicate the channel bandwidths that the UE and the AP can support all fall within this scope. Within the protection scope of the invention, for example, only the Supported ChannelWidth Set in HT Capabilities may be selected as the first capability information and the second capability information.

Thus, the base station can determine the channel bandwidth (or communication mode) for communication between the UE and the AP.

At S120, the base station may determine offloaded traffic.

Optionally, according to the channel bandwidth, the transmission of the target data with the user equipment through the WLAN AP via the GTP tunnel includes:

Determine downlink target data according to the channel bandwidth, where the target downlink data is all or part of the downlink data on the bearer;

Sending the downlink target data to the WLAN AP via the GTP tunnel, so that the WLAN AP forwards the downlink target data to the user equipment.

Specifically, during downlink (that is, the base station obtains data from the gateway device and sends it to the UE), the base station can directly determine the downlink offload traffic (that is, downlink target data) according to the channel bandwidth determined in S110. For example, the base station may pre-determine the mapping relationship between each offloaded traffic and each channel bandwidth (or communication mode). The offload traffic corresponding to the communication mode of the high-throughput communication mode in the mapping relationship may be searched. Certainly, the offload traffic corresponding to the communication mode of the high throughput communication mode may be much larger than the offload traffic corresponding to the non-high throughput communication mode.

Optionally, the transmission of target data with the user equipment through the WLAN AP via the GTP tunnel includes:

Sending second channel bandwidth indication information to the user equipment, where the second channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP, so that the user equipment can information to determine uplink target data, where the target uplink data is all or part of the uplink data on the bearer;

Receive the uplink target data sent by the WLAN AP via the GTP tunnel, where the uplink target data is sent by the user equipment to the WLAN AP.

Specifically, for example, in the above case B, since the UE has not yet accessed the AP, neither the UE nor the AP has determined the channel bandwidth for communication between each other. In this case, the base station may use the channel bandwidth determined in S110 It is issued to the UE, so that the UE can determine the uplink offload traffic (uplink target data) (the UE sends data to the gateway device via the base station) according to the channel bandwidth. For example, if the channel bandwidth indicated by the base station is 40 MHz, the UE can increase the offload traffic. For another example, if the channel bandwidth indicated by the base station is 20MHz, the UE may reduce the offload traffic. Certainly, the offload traffic when the channel bandwidth is 40 MHz may be much larger than that when the channel bandwidth is 20 MHz.

In addition, during the communication process between the UE and the AP, there are cases where the auxiliary channel is occupied by other APs, etc., resulting in the inability to continue communication in the high-throughput communication mode, or the AP finds that the auxiliary channel that can be used (not used by other APs, etc. Occupied) and can be switched to communication in the high-throughput communication mode, in this case, the UE can receive the changed HT Operation sent by the AP, determine that the channel bandwidth has changed, and can notify the base station of the changed channel bandwidth, thereby , the base station can re-determine offloaded traffic according to the changed channel bandwidth.

Optionally, the method also includes:

Receive channel switching information sent by the user equipment or the WLAN AP, where the channel switching information is used to indicate that the channel used for communication between the user equipment and the WLAN AP is switched and the time when the switching is completed; and

According to the channel bandwidth, the transmission of target data with the user equipment through the WLAN AP via the GTP tunnel includes:

According to the channel bandwidth and the channel switching indication information, target data is transmitted with the user equipment through the WLAN AP via the GTP tunnel.

Specifically, for example, when the AP detects that the currently used auxiliary channel overlaps with the main channel of other APs, there is a situation where the AP needs to switch the current auxiliary channel to a new operating channel. In this case, the AP may carry the Channel Switch Announcement in messages such as Beacon, Probe Response, and Channel Switch Announcement to notify the UE that the channel is being switched. The Channel SwitchAnnouncement may include the following information elements:

Channel Switch Mode (Channel Switch Mode), used to indicate whether the UE can continue to transmit data during channel switching;

New Channel Number (New Channel Number), used to indicate the channel number to be switched to;

Channel Switch Count (Channel Switch Count), used to indicate the time before switching to a new channel successfully.

Therefore, the UE or the AP can send the relevant parameters in the channel Channel Switch Announcement (an example of channel switching instruction information) to the base station through, for example, an RRC dedicated message, so that the base station can evaluate the time for the UE and the AP to complete the channel switching according to the ChannelSwitch Conut Therefore, the base station does not perform offloading through the AP during channel switching, and re-executes the offloading process after the switching is completed.

It should be noted that, when there is a difference in the channel bandwidth before and after the switch due to the above channel switching, the base station can reacquire the channel bandwidth after the switch and re-determine the offloaded traffic. This process is similar to the process in S110 above. Here, In order to avoid redundant description, its description is omitted.

In addition, the communication capabilities (supportable channel bandwidth) of the UE and the AP listed above may be the absolute communication capabilities of the UE and the AP, or the relative communication capabilities of the UE and the AP within a certain period of time. For example, for an AP, if Currently there is no auxiliary channel available (all channels are occupied by other APs), the current AP cannot support the communication bandwidth of 40MHz, similarly, if there is currently an auxiliary channel available (the channel does not overlap with the main channel of other APs) ), the current AP can support a communication bandwidth of 40MHz.

In the above, the application of the data transmission method of the present invention in the 802.11n version is listed, but the present invention is not limited thereto. For example, a higher throughput (VHT, Very High Throughput) mode is introduced in the 802.11ac version. Supports a bandwidth of up to 160MHz. Similarly, for a UE with VHT capabilities, declare its supported VHT features through the VHT Capabilities information element, for example, whether to support 80MHz+80MHz or 160MHz channel bandwidth (indicated by Supported ChannelWidth Set), and AP There are four kinds of channel bandwidths that can be supported, namely, 20MHz, 40MHz, 80MHz, and 160MHz or 80MHz+80MHz. In this case, for example, the HT Capabilities used in the above S110 and S120 can be replaced by VHT Capabilities, except that there may be differences in the final channel bandwidth, other steps and methods are similar to the application in the 802.11n version, here, for To avoid repetition, its description is omitted.

In addition, for example, if only one (or a small number of) APs are set in the system, there may be situations where the AP can provide the primary channel and the secondary channel to the UE at any time period. At this time, the UE and the AP can negotiate the communication protocol between each other. version (for example, any version in 802.11a/b/g, 802.11n or 802.11ac), and report it to the base station, so that the base station can determine the offloaded traffic according to the current communication version, for example, if the communication version is 802.11a /b/g, the base station can determine that the channel bandwidth for communication between UE and AP is 20MHz. If the communication version is 802.11n, the base station can determine that the channel bandwidth for communication between UE and AP is 40MHz. If the communication version is 802.11ac , the base station can determine that the channel bandwidth for communication between the UE and the AP is 80 MHz or higher. Alternatively, the UE and the AP can also report their supported versions, so that the base station can determine the channel bandwidth for communication between the UE and the AP according to the lower version of the two. For example, if the UE only supports 802.11a/b/g, While the base station supports all of 802.11a/b/g, 802.11n, and 802.11ac, based on the version supported by the UE, it can be determined that the channel bandwidth for communication between the UE and the AP is 20MHz.

After determining the offloaded traffic, the base station needs to notify the AP and the target user equipment to prepare for offloading.

Optionally, before performing target data transmission with the user equipment through the WLAN AP via the GTP tunnel according to the channel bandwidth, the method further includes:

Sending first offloading instruction information to the WLAN AP, where the first offloading instruction information is used to instruct the WLAN AP to transmit data between the base station and the user equipment, where the first offloading instruction information includes identity information of the user equipment, where , a piece of identity information is used to uniquely indicate a user equipment in the communication system.

Specifically, the base station sends the first offloading instruction information to the AP, and the first offloading instruction information may indicate that the AP needs to send the data sent by the base station to the target user equipment, and may also indicate that the AP needs to send the target user equipment to its The data is sent to the base station, where the first offload indication information can be sent to the AP with the identity information of the target user equipment, where one piece of identity information can uniquely indicate a user equipment in the system.

This identity information can include any of the following:

MAC address, Internet Protocol IP address, basic service set identifier BSSID, associated identity information AID, mobile phone number of mobile user, International Mobile Subscriber Identity IMSI or International Mobile Station Equipment Identity IMEI.

Specifically, in the embodiment of the present invention, the identity information of the device refers to information that can uniquely identify the device in the communication system using the embodiment of the present invention. It should be noted that, in this embodiment of the present invention, the identity information may be the information that comes with the device when it leaves the factory, or it may be assigned to the device by the system, which is not particularly limited in the present invention.

In this embodiment of the present invention, the identity information may include a Media Access Control (MAC, Medium Access Control) address, an Internet Protocol (IP, Internet Protocol) address, a Basic Service Set Identifier (BSSID, BasicService Set IDentifier), associated identity information ( AID, Association IDentifier), mobile phone number, International Mobile Subscriber Identity (IMSI, International Mobile Subscriber Identity) and International Mobile Equipment Identity (IMEI, International Mobile Equipment Identity) and other information. It should be understood that the user identifier in the embodiment of the present invention is not limited to the above information, and other information elements that can uniquely reflect the user identifier fall within the scope of the embodiment of the present invention.

The AP may determine the target user equipment according to the identity information of the target user equipment, and may determine that the data sent by the base station needs to be sent to the target user equipment according to the first offload indication information, or determine that the target user equipment needs to be The data sent to it by the user equipment is sent to the base station.

Since the AP and the target user equipment need to know the MAC address of the target user equipment when transmitting data through wireless local area network communication, the AP can also obtain the MAC address of the target user equipment after determining the target user equipment, for example, from A mobility management entity (MME, Mobility Management Entity) in the system obtains the MAC address of the target user equipment, may also obtain the MAC address of the target user equipment from the target user equipment, and may also obtain the MAC address of the target user equipment from the base station The address is not particularly limited in the present invention.

In addition, in the embodiment of the present invention, the user equipment may carry its MAC address to the MME through, for example, an Attach Request (AttachRequest) or a Tracking Area Update Request (Tracking Area Update Request) message, so that the MME may send the MAC address of the user equipment For example, the base station can obtain the MAC address of each user equipment by issuing a UE initial context setup (Initial UE Context SetupRequest) or a UE context modification message (UE Context Modify Request) to the base station.

In addition, the base station may send the GTP tunnel terminal identifier (TEID, Tunnel EndpointIdentifier) corresponding to the target user equipment on the base station side to the AP through, for example, a UE Association Setup Request message, and may pass, for example, The UE Association Setup Response (UE Association SetupResponse) message receives the GTP TEID on the AP side corresponding to the target user equipment sent by the AP. Therefore, a GTP TEID on the base station side can identify an uplink GTP tunnel (the GTP tunnel used when transmitting data from the AP to the base station), and an AP-side GTP TEID can identify a downlink GTP tunnel (the GTP tunnel used when transmitting data from the base station to the AP). ).

Optionally, the base station transmits target data with the user equipment through the WLAN AP via the GTP tunnel, including:

The base station determines a first GTP tunnel corresponding to the user equipment;

The base station transmits target data with the user equipment through the WLAN AP via the first GTP tunnel.

Specifically, if there is only one UE that needs to be offloaded through the AP, the target data can be transmitted directly through each GTP tunnel; however, if there are more than two UEs that need to be offloaded through the AP, or the UE currently connected to the AP If there are more than two, it is necessary to determine the mapping relationship between each GTP and each UE between the base station and the AP. Thus, for example, when the base station needs to send data (that is, downlink data) to the user equipment (hereinafter, referred to as target user equipment for ease of distinction) through the AP, it can pass through the GTP tunnel corresponding to the target device (specifically, , is a downlink tunnel) to send the downlink data (downlink target data) to the AP, and the AP can determine that the data is downlink target data that needs to be sent to the target user equipment according to the tunnel through which the received data passes. For another example, after the AP receives the data sent by the target user equipment, it can determine that the data is data (uplink target data) that needs to be sent to the base station according to the above-mentioned first offload indication information, so that the AP can choose to communicate with the target user equipment The corresponding GTP tunnel (specifically, an uplink tunnel), and through the GTP tunnel, the uplink target data is sent to the base station, and the base station can determine that the data is from the target user equipment according to the tunnel through which the received data passes. upstream target data.

Optionally, the base station determining the first GTP tunnel corresponding to the user equipment includes:

The base station determines the first uplink GTP tunnel corresponding to the user equipment;

The base station sends first mapping relationship information to the WLAN AP, where the first mapping relationship information is used to indicate a mapping relationship between the tunnel identifier TEID of the first uplink GTP tunnel and the user equipment; and

The base station transmits target data with the user equipment through the WLAN AP via the first GTP tunnel, including:

When receiving data sent by the WLAN AP via the first uplink GTP tunnel, the base station determines, according to the first mapping relationship, that the received data is uplink target data sent by the user equipment.

Specifically, in this embodiment of the present invention, the GTP tunnel for data transmission may be determined by the receiving end of the data. For example, the base station may determine the GTP TEID of the uplink GTP tunnel corresponding to each user equipment, and set the GTP TEID of each uplink GTP tunnel to The mapping relationship (first mapping relationship information) between the GTP TEID and each user equipment (for example, the identity information of the user equipment) notifies the AP, so that when the AP receives the uplink data sent by the target user equipment, it can The identity information of the user equipment, from the first mapping relationship, finds the GTPTEID of the uplink GTP tunnel corresponding to the target user equipment, and then determines the uplink GTP tunnel, and passes the uplink data (uplink target data) of the target user equipment through the above The determined uplink GTP tunnel is sent to the base station. After the base station receives the data through the uplink GTP tunnel, it can search the user equipment corresponding to the TEID of the uplink GTP tunnel in the first mapping relationship to determine the uplink data. From the target user device.

Optionally, the base station determining the first GTP tunnel corresponding to the user equipment includes:

The base station receives the second mapping relationship information sent by the WLAN AP, where the second mapping relationship information is used to indicate the mapping relationship between the TEID of the downlink first GTP tunnel and the user equipment;

The base station determines the downlink first GTP tunnel according to the second mapping relationship information; and

The base station transmits target data with the user equipment through the WLAN AP via the first GTP tunnel, including:

The base station sends downlink target data to the WLAN AP via the first downlink GTP tunnel, so that the WLAN AP determines the user equipment according to the second mapping relationship information after receiving the data through the first downlink GTP tunnel, and Forwarding the downlink target data to the user equipment.

Specifically, in this embodiment of the present invention, the GTP tunnel for data transmission may be determined by the receiving end of the data. For example, the AP may determine the GTP TEID of the downlink GTP tunnel corresponding to each user equipment, and set the GTP TEID of each downlink GTP tunnel to The mapping relationship (second mapping relationship information) between GTPTEID and each user equipment (for example, the identity information of the user equipment) notifies the base station, so that when the base station needs to send downlink data to the target user equipment through the AP, it can according to the The identity information of the target user equipment, from the second mapping relationship, find the GTPTEID of the downlink GTP tunnel corresponding to the target user equipment, and then determine the downlink GTP tunnel, and pass the downlink data (downlink target data) of the target user equipment through The downlink GTP tunnel determined as described above is sent to the AP. After the AP receives the data through the downlink GTP tunnel, it can search the user equipment corresponding to the TEID of the downlink GTP tunnel in the second mapping relationship to determine the downlink GTP tunnel. The target user device to which the data needs to be sent.

Since the GTP tunnel established above corresponds to the target user equipment, the base station and the AP can determine that the data belongs to the target user equipment through the data transmission tunnel (or in other words, the GTP TEID carried in the data packet).

It should be noted that, if there are multiple bearers for transmitting the target user equipment between the base station and the gateway device, the same number of GTP tunnels can be established between the base station and the AP, so that multiple bearers There is a one-to-one correspondence with multiple GTP tunnels (specifically, multiple GTP TEIDs). Therefore, the GTP tunnel can be used to distinguish which bearer it belongs to, and then the process will be described in detail.

The method also includes:

The base station sends second offloading instruction information to the user equipment, where the second offloading instruction information is used to instruct to transmit the target data between the user equipment and the WLAN AP.

Specifically, the base station sends the second offloading instruction information to the target user equipment, and the second offloading instruction information may indicate that the target user equipment needs to receive the data sent to it by the AP, and may also indicate that the target user equipment needs to transfer specified data (target data ) to the AP, or in other words, the second offload indication information may indicate that the target user equipment needs to activate the protocol stack on the second user equipment side to perform offload related procedures, which will be described in detail later.

It should be noted that the specified data may be all or part of the data that the target user equipment needs to send to the base station (or EPC), which is not particularly limited in the present invention, and when the target data is that the target user equipment needs to send For the part of the data to the base station (or EPC), the second offload indication information may include a target data indication information element, and the target data indication information element may indicate that the target data is that the target user equipment needs to send to the base station (or EPC) , EPC) data specific which part, for example, the target data indication information element can indicate the time domain resources or frequency domain resources corresponding to the target data, or in other words, when the target user equipment directly sends the target equipment to the base station, used for A time-domain resource or a frequency-domain resource that bears the target data.

Moreover, the second offload indication information may include an AP indication information element indicating the AP, so that the target user equipment can determine the AP used for offload according to the AP indication information element, wherein, if the target user equipment has not yet accessed the AP, The second offload indication information may further include an access indication information element, so that the target user equipment accesses the AP according to the AP indication information element and the access indication information element.

In the embodiment of the present invention, after the AP and the target user equipment are ready for the offloading, they may send confirmation information to the base station.

Therefore, after receiving the acknowledgment information, the base station can perform an offloading operation.

Next, the operation when the base station performs offloading for the target user equipment (for example, among multiple user equipments) through the AP during downlink will be described.

The base station can receive (for example, through the S1 interface) the downlink data sent by the gateway device (for example, PDN-GW) from the network side (for example, EPC) and needs to be sent to the target user equipment, and determine from the data that it needs to be sent through the AP. Downlink target data for target users is referred to as data A hereinafter.

In the embodiment of the present invention, a bearer for transmitting the data of the target user equipment is set between the base station and the gateway device (case 1); or, multiple bearers for transmitting the data of the target user equipment are set between the base station and the gateway device Bearer of data of the target user equipment (case 2).

Case 1

The base station encapsulates the data A through at least one protocol layer of the first base station side protocol stack and the second base station side protocol stack to generate a data packet A (an example of the first data packet) conforming to the GTP communication mode. The data packet A carries the GTP TEID corresponding to the target user equipment allocated by the AP as described above (hereinafter referred to as the GTP TEID on the AP side), and, according to the second mapping relationship determined as described above, determine the GTP TEID associated with the AP The downlink GTP tunnel corresponding to the side GTP TEID sends the data packet A to the AP.

After receiving the data packet A, the AP can decapsulate the data packet A through the first WLAN AP side protocol stack (or the first WLAN AP side protocol stack and the adaptation layer), so as to obtain the target user equipment The corresponding AP side GTP TEID and the data A, and, according to the AP side GTP TEID and the second mapping relationship determined as described above, it can be determined that the data A needs to be sent to the target user equipment, and then, through the second The WLAN AP side protocol stack (or the second WLAN AP side protocol stack and the adaptation layer) encapsulates the data A to generate a data packet B (an example of the second data packet) that conforms to the wireless local area network communication mode, and passes the wireless The carrier (an example of the first carrier) used in the LAN communication mode sends the data packet B to the target user equipment.

The target user equipment may receive the data packet B through the first carrier, and decapsulate the data packet B through at least one protocol layer of the first user equipment side protocol stack and the second user equipment side protocol stack, thereby obtaining The data a.

Case 2

Since there are at least two bearers between the base station and the gateway device, the user equipment needs to know the bearer to which each data carried in the data packet sent by the AP belongs to, so as to reliably restore the data from the network side, thus, the AP It is also necessary to know the bearer to which each data sent by the base station belongs, and when encapsulating the data packet sent to the target user equipment, add an identifier (third bearer indication information) indicating the bearer to which each data belongs to the data packet, the encapsulation process It may be the same as or similar to the prior art. Here, to avoid redundant description, its description is omitted. The following mainly describes the process and method for the base station to notify the AP of the bearer to which each data belongs.

Optionally, the second base station side protocol stack includes a bearer mapping layer, where the bearer mapping layer is used to determine the bearer to which the target data belongs, and

When the user equipment corresponds to at least two bearers, the base station transmits target data with the user equipment via the GTP tunnel through the WLAN AP, including:

The base station determines the bearer to which the downlink target data in the target data belongs through the bearer mapping layer, and the bearer mapping layer generates first bearer indication information, where the first bearer indication information is used to indicate the bearer to which the downlink target data belongs ;

The base station sends the first bearer indication information to the WLAN AP, so that the user equipment determines the bearer to which the downlink target data belongs according to the first bearer indication information forwarded by the WLAN AP.

And, the base station sends the first bearer indication information to the WLAN AP, including:

The base station encapsulates the first bearer indication information and the downlink target data in the same data packet and sends it to the WLAN AP through the bearer mapping layer.

Specifically, in this embodiment of the present invention, for example, the data A from the network side consists of data A1 to data An, where n is the same as the number of bearers used to transmit data A between the base station and the gateway device, and the base station When encapsulating the data packet (for example, through at least one layer of the base station protocol stack and the GTP protocol stack), indication information (first bearer indication information) for indicating the bearer to which the data A1-data An belong may be added to the data packet Therefore, according to the first bearer indication information, the AP can know the bearers to which the data A1 to data An sent by the base station belong.

It should be noted that the MAC layer of the base station protocol stack has the function of identifying the bearer shown in the data. Therefore, in the embodiment of the present invention, when the GTP protocol stack is aggregated on the MAC protocol stack of the base station protocol stack, the MAC layer can and encapsulating the first bearer indication information in a data packet.

Moreover, in the embodiment of the present invention, the number of data packets generated by the base station by encapsulating the data A1 to data An may be one or n, which is not particularly limited in the present invention. In addition, when n data packets are generated, the n data packets may be transmitted to the AP through one GTP tunnel, or may be transmitted to the AP through n tunnels, which is not particularly limited in the present invention.

In the embodiment of the present invention, a protocol layer (an example of the bearer mapping layer) for encapsulating the first bearer indication information in the data packet may also be added in the base station protocol stack, and the GTP protocol stack is aggregated in the bearer on the mapping layer. Moreover, in the embodiment of the present invention, the bearer mapping layer may be set above the PDCP layer, or between the PDCP layer and the RLC layer, or between the RLC layer and the MAC layer. limited.

Therefore, the AP can know the bearers to which the data D1 to Dn sent by the base station belong according to the first bearer indication information. It should be noted that the MAC layer of the WiFi protocol stack has the function of identifying the bearer shown in the data. Therefore, in the embodiment of the present invention, when the WiFi protocol stack of the AP is aggregated on the MAC protocol stack of the GTP protocol stack, the The MAC layer acquires the first bearer indication information from the data packet. Moreover, in the embodiment of the present invention, a protocol layer (an example of a bearer mapping layer) for obtaining the first bearer indication information from a data packet may also be added in the GTP protocol stack, and the WiFi protocol stack is aggregated on the bearer on the mapping layer.

It should be noted that, if the bearer indication information is added to the data packet to indicate the bearer to which the data belongs, the base station and the AP can determine that the The user devices that the data transferred between them belong to.

Optionally, when the user equipment corresponds to at least two bearers, the base station transmits target data with the user equipment through the WLAN AP via the GTP tunnel, including:

determining, by the base station, a second GTP tunnel corresponding to the bearer to which the target data belongs;

The base station transmits the target data with the user equipment through the WLAN AP via the second GTP tunnel.

And, the base station determines the second GTP tunnel corresponding to the bearer to which the target data belongs, including:

The base station receives fourth mapping relationship information sent by the WLAN AP, where the fourth mapping relationship information is used to indicate a mapping relationship between the TEID of the second downlink GTP tunnel and the bearer to which the downlink target data belongs;

Determine the second downlink GTP tunnel according to the fourth mapping relationship information; and

The base station transmits the target data with the user equipment through the WLAN AP via the second GTP tunnel, including:

The base station sends the downlink target data to the WLAN AP through the second downlink GTP tunnel, so that after receiving the downlink target data through the second downlink GTP tunnel, the WLAN AP determines the downlink target data according to the fourth mapping relationship information the bearer to which the data belongs, and determine the user equipment according to the bearer to which the downlink target data belongs and the bearer information, so as to send the downlink target data to the user equipment.

Specifically, in the embodiment of the present invention, n downlink GTP tunnels can be established between the base station and the AP, so that each downlink GTP tunnel is only used to transmit downlink data on one bearer, and, in the embodiment of the present invention , the first offloading information may further include bearer indication information, the bearer indication information is used to indicate each bearer corresponding to the user equipment, and the AP may allocate an AP-side GTP TEID for each downlink GTP tunnel, and notify the base station of each The mapping relationship between the GTP TEID on the AP side and each downlink GTP tunnel, and the AP can determine the mapping relationship (fourth mapping relationship) between each bearer corresponding to the target user equipment and each downlink GTP tunnel, so that the base station According to the mapping relationship between each AP side GTP TEID and each downlink GTP tunnel and the mapping relationship between each bearer and each downlink GTP tunnel, the data A1 ~ data An can be encapsulated to generate n data packets, and through Each data packet is tunneled corresponding to each data.

For example, the base station may encapsulate the AP-side GTP TEID of the downlink GTP tunnel corresponding to the data A1 into the data packet A1, and send the data packet A1 to the AP. Through a similar method, the base station can generate data packets A2 to An and send them to the AP.

After the AP decapsulates the data packet A1, it can learn the AP-side GTP TEID of the downlink GTP tunnel corresponding to the data A1, so as to determine the downlink GTP tunnel for transmitting the data packet A1. In addition, the AP may determine, according to the downlink GTP tunnel that transmits the data packet A1 and the mapping relationship (fourth mapping relationship) between each bearer and each GTP tunnel determined as described above, which data A1 carried in the data packet A1 belongs to. bearer.

Through a similar method, the AP can determine the bearers to which the data A2 - data An belong. Therefore, the AP can determine the bearer to which the data A2 to data An belong and the above bearer information, and determine that the data is downlink target data that needs to be sent to the target user equipment.

Thereafter, the AP can encapsulate the data A1-An through the second WLAN AP side protocol stack (or the second WLAN AP side protocol stack and the adaptation layer) to generate one or more data conforming to the wireless local area network communication mode packet (another example of the second data packet), and send the one or more data packets to the target user equipment through the carrier (an example of the first carrier) used in the wireless local area network communication mode, where, in the data packet It may carry indication information used to indicate the bearer to which the data A1 - data An belong.

The target user equipment may receive the one or more data packets through the first carrier, and transmit the one or more data packets through at least one protocol layer of the first user equipment side protocol stack and the second user equipment side protocol stack Perform decapsulation processing to obtain the data A from the network side.

Here, the data A from the network side consists of data A1 ~ data An, where n is the same as the number of bearers used to transmit data A between the base station and the gateway device, and the user equipment can use the data carried in the data packet sent by the AP. The indication information used to indicate the bearers to which the data A1 to data An belong is to know the bearers to which the data A1 to data An sent by the base station belong to.

It should be noted that the MAC layer of the user equipment protocol stack has the function of identifying the bearer shown in the data. Therefore, in the embodiment of the present invention, when the WiFi protocol stack is aggregated on the MAC protocol stack of the user equipment protocol stack, the The MAC layer determines bearers to which data A1 to data An belong.

Alternatively, a protocol layer (an example of a bearer mapping layer) for determining the bearer to which the data A1 - data An belong may also be added to the protocol stack of the user equipment, and the WiFi protocol stack is aggregated on the bearer mapping layer.

Moreover, in the embodiment of the present invention, the bearer mapping layer may be set above the PDCP layer, or between the PDCP layer and the RLC layer, or between the RLC layer and the MAC layer. limited

Optionally, when the target data is part of the data on the bearer, the method further includes:

The base station transmits non-target data with the user equipment through the first base station-side protocol stack, where the non-target data is data other than the target data among all data on the bearer.

Specifically, when the downlink target data is part of the downlink data on the at least one bearer, the method further includes: the base station encapsulates the downlink non-target data through the first base station side protocol stack to generate the fifth In a data packet, the downlink non-target data is data other than the downlink target data in all downlink data on the at least one bearer; the base station sends the fifth data packet to the target user equipment through a third carrier, so that The target user equipment decapsulates the fifth data packet through the first user equipment side protocol stack to obtain the downlink non-target data, and determines the at least one bearer according to the downlink non-target data and the downlink target data All downlink data on the above, where the third carrier is a carrier used for communication between the base station and the user equipment.

For example, when data A is a part of all data from the network side and needs to be sent to the target user equipment, the base station also needs to pass the remaining part (hereinafter referred to as data C) through the carrier used for communication between the base station and the user equipment ( An example of the third carrier) is sent to the target user equipment, the process and method may be the same as or similar to the prior art, and here, in order to avoid redundant description, its description is omitted.

Thus, the downlink data transmission process is completed.

Fig. 5 is a schematic interaction diagram of a downlink data transmission method according to an embodiment of the present invention.

As shown in Fig. 5, at S210, the UE may send its MAC address to the MME.

At S220, the MME may send the MAC address of the UE to the base station.

In S230, the base station may send the MAC address of the UE and the base station side GTP TEID allocated for the UE to the AP.

In S240, the AP may send the AP-side GTP TEID allocated for the UE to the base station.

At S250, the base station may encapsulate the AP-side GTP TEID in a data packet, and send the data packet to the AP.

At S260, the AP determines according to the GTP TEID on the AP side that the data carried in the data packet needs to be sent to the UE.

At S270, the AP may send the data carried in the data packet to the UE according to the MAC address of the UE.

Next, the operation when the base station performs offloading for the target user equipment (for example, among multiple user equipments) through the AP during uplink will be described.

The user equipment may determine the uplink target data that needs to be sent to the base station through the AP from the uplink data that needs to be sent to the base station (or in other words, the network side), hereinafter referred to as data D.

In the embodiment of the present invention, a bearer for transmitting the data of the target user equipment is set between the base station and the gateway device (case 3); or, multiple bearers for transmitting the data of the target user equipment are set between the base station and the gateway device The bearer of the data of the target user equipment (case 4).

Case 3

The target user equipment encapsulates the data D through at least one protocol layer of the first user equipment side protocol stack and the second user equipment side protocol stack to generate a data packet D conforming to the wireless local area network communication mode (the fourth data packet One example), and transmit the data packet D to the AP via the carrier (an example of the second carrier) used in the WLAN communication method.

After receiving the data packet D, the AP can decapsulate the data packet D through the second WLAN AP side protocol stack (or the second WLAN AP side protocol stack and adaptation layer), so as to obtain the data D, Thereafter, the AP may determine that the data D needs to be sent to the base station according to the first offload indication information received as described above, and thus, may pass the first WLAN AP side protocol stack (or the first WLAN AP side protocol stack and the adaptation layer ) performs encapsulation processing on the data D to generate a data packet E (an example of the second data packet) conforming to the GTP communication mode. The GTP TEID corresponding to the target user equipment assigned by the base station (base station side GTP TEID) is encapsulated in the data packet E, and the GTP TEID corresponding to the base station side GTP TEID can be determined according to the first mapping relationship determined as described above. The corresponding uplink GTP tunnel sends the data packet E to the base station.

After receiving the data packet E, the base station may decapsulate the data packet E through at least one protocol layer of the first base station side protocol stack and the second base station side protocol stack to obtain the base station side GTP TEID and data D , and according to the base station side GTP TEID and the first mapping relationship determined as described above, it is determined that the data D is uplink data from the target user equipment, so that the base station can (for example, through the S1 interface) send a gateway device (for example, PDN - the GW) sends the uplink data D that the target user equipment needs to send to the network side (for example, EPC).

Case 4

Since there are at least two bearers between the base station and the gateway device, the base station needs to know the bearer to which each data carried in the data packet sent by the AP belongs to, so as to accurately send each data to the network side, thus, the AP It is also necessary to know the bearer to which each data sent by the target user equipment belongs, and the target user equipment may add an identifier indicating the bearer to which each data belongs to the data packet when encapsulating and sending the data packet to the AP.

Optionally, the second base station side protocol stack includes a bearer mapping layer, where the bearer mapping layer is used to determine the bearer to which the target data belongs, and

When the user equipment corresponds to at least two bearers, the base station transmits target data with the user equipment via the GTP tunnel through the WLAN AP, including:

The base station acquires second bearer indication information forwarded by the WLAN AP through the bearer mapping layer, where the second bearer indication information is used to indicate the bearer to which the uplink target data in the target data belongs;

The base station determines the bearer to which the uplink target data belongs according to the second bearer indication information, the second bearer indication information is determined by the user equipment and sent to the WLAN AP.

And, the base station acquires the second bearer indication information forwarded by the WLAN AP through the bearer mapping layer, including:

The base station acquires the second bearer indication information from the data packet encapsulated with the uplink target data through the bearer mapping layer.

Specifically, in this embodiment of the present invention, for example, the data D that the target user equipment needs to send to the network side consists of data D1 to data Dn, where n is related to the bearer used to transmit data D between the base station and the gateway device are the same, the target user equipment may add an indication to the data packet to indicate the bearer to which the data D1-data Dn belong when encapsulating the data packet (for example, through at least one layer of the user equipment protocol stack and the WiFi protocol stack) information (second bearer indication information), so that the AP can know the bearers to which the data D1 to data Dn sent by the target user equipment belong according to the second bearer indication information.

It should be noted that the MAC layer of the user equipment protocol stack has the function of identifying the bearer shown in the data. Therefore, in the embodiment of the present invention, when the WiFi protocol stack is aggregated on the MAC protocol stack of the user equipment protocol stack, the The MAC layer encapsulates the second bearer indication information in the data packet.

Moreover, in the embodiment of the present invention, the number of data packets generated by encapsulating the data D1 to Dn may be one or n, which is not particularly limited in the present invention.

In addition, in the embodiment of the present invention, a protocol layer (an example of the bearer mapping layer) for encapsulating the second bearer indication information in the data packet may also be added in the user equipment protocol stack, and the WiFi protocol stack aggregates on the bearer mapping layer. In the embodiment of the present invention, the bearer mapping layer may be set above the PDCP layer, or between the PDCP layer and the RLC layer, or between the RLC layer and the MAC layer, which is not particularly limited in the present invention.

Therefore, the AP can learn the bearers to which the data D1 to Dn sent by the user equipment belong according to the second bearer indication information. It should be noted that the MAC layer of the AP's WiFi protocol stack has the function of identifying the bearer shown in the data. Therefore, in the embodiment of the present invention, when the AP's GTP protocol stack is aggregated on the MAC protocol stack of the WiFi protocol stack, it can Obtain the second bearer indication information from the data packet through the MAC layer. Moreover, in the embodiment of the present invention, a protocol layer (an example of the bearer mapping layer) for obtaining the second bearer indication information from the data packet may also be added in the GTP protocol stack, and the GTP protocol stack is aggregated on the bearer on the mapping layer.

It should be noted that, if the bearer indication information is added to the data packet to indicate the bearer to which the data belongs, the base station and the AP can determine that the The user devices that the data transferred between them belong to.

Optionally, when the user equipment corresponds to at least two bearers, the base station transmits target data with the user equipment through the WLAN AP via the GTP tunnel, including:

determining, by the base station, a second GTP tunnel corresponding to the bearer to which the target data belongs;

The base station transmits the target data with the user equipment through the WLAN AP via the second GTP tunnel.

And, the base station determines the second GTP tunnel corresponding to the bearer to which the target data belongs, including:

The base station determines a second uplink GTP tunnel corresponding to the bearer to which the uplink target data belongs;

The base station sends third mapping relationship information to the WLAN AP, where the third mapping relationship information is used to indicate a mapping relationship between the TEID of the uplink second GTP tunnel and the bearer to which the uplink target data belongs; and

The base station transmits the target data with the user equipment through the WLAN AP via the second GTP tunnel, including:

When receiving data sent by the WLAN AP via the second uplink GTP tunnel, the base station determines the bearer to which the received data belongs according to the third mapping relationship information;

According to the bearer to which the received data belongs, it is determined that the data received via the second uplink GTP tunnel is the target uplink data sent by the user equipment.

Specifically, in the embodiment of the present invention, when the target user equipment encapsulates the data packet (for example, through at least one layer of the user equipment protocol stack and the WiFi protocol stack), it may add an indicator for indicating data D1 to data D1 in the data packet. The indication information of the bearer to which Dn belongs (second bearer indication information), so that the AP can learn the bearers to which the data D1 to Dn sent by the target user equipment belong according to the second bearer indication information.

It should be noted that the MAC layer of the user equipment protocol stack has the function of identifying the bearer indicated by the data. Therefore, in the embodiment of the present invention, when the UE's WiFi protocol stack is aggregated on the MAC protocol stack of the user equipment protocol stack, it can Through the MAC layer, the second bearer indication information is encapsulated in the data packet.

Moreover, in the embodiment of the present invention, the number of data packets generated by encapsulating the data D1 to Dn may be one or n, which is not particularly limited in the present invention.

In addition, in the embodiment of the present invention, a protocol layer (an example of the bearer mapping layer) for encapsulating the second bearer indication information in the data packet may also be added in the user equipment protocol stack, and the WiFi protocol stack aggregates on the bearer mapping layer. In the embodiment of the present invention, the bearer mapping layer may be set above the PDCP layer, or between the PDCP layer and the RLC layer, or between the RLC layer and the MAC layer, which is not particularly limited in the present invention.

The AP may know the bearers to which the data D1 to Dn sent by the base station belong according to the second bearer indication information. The AP may determine that the data D1 to Dn need to be sent to the base station according to the identity information of the user equipment.

n uplink GTP tunnels can be established between the base station and the AP, so that each uplink GTP tunnel is only used to transmit uplink data on one bearer, and the base station can allocate a base station side GTP TEID for each uplink GTP tunnel, and notify the AP to notify , and the base station can determine the mapping relationship (the third mapping relationship) between each corresponding bearer of each user equipment and each uplink GTP tunnel, and notify the AP, so that the AP can use the above-mentioned GTP TEID on each base station side and each uplink GTP tunnel For the mapping relationship between tunnels and the mapping relationship between each bearer and each uplink GTP tunnel, encapsulate the data D1 to Dn to generate n data packets, and transmit each data packet through the tunnel corresponding to each data.

For example, the AP may encapsulate the base station side GTP TEID of the uplink GTP tunnel corresponding to the data D1 into the data packet D1, and send the data packet D1 to the base station. Through a similar method, the AP can generate data packets D2 to Dn and send them to the base station.

After the base station decapsulates the data packet D1, it can know the base station-side GTP TEID of the uplink GTP tunnel corresponding to the data D1, so as to determine the uplink GTP tunnel through which the data packet D1 is transmitted, and then, it can be determined as described above The third mapping relationship is to determine the bearer to which the uplink data belongs and the user equipment that sends the uplink data.

Thereafter, the base station may send (for example, through the S1 interface) to the gateway device (for example, the PDN-GW) the uplink data acquired by the target user equipment as described above that needs to be sent to the network side (for example, the EPC), and each data It is sent to the network side through the corresponding bearer.

Optionally, when the target data is part of the data on the bearer, the method further includes:

The base station transmits non-target data with the user equipment through the first base station-side protocol stack, where the non-target data is data other than the target data among all data on the bearer.

Specifically, when the data D is a part of all data that the target user equipment needs to send to the network side, the target user equipment also needs to send the remaining part (hereinafter referred to as data F) through the The carrier (an example of the fourth carrier) is sent to the base station. The process and method may be the same as or similar to the prior art. Here, to avoid redundant description, its description is omitted.

Thus, the uplink data transmission process is completed.

Fig. 6 is a schematic interaction diagram of a method for transmitting uplink data according to an embodiment of the present invention.

As shown in Fig. 6, at S310, the UE may send its MAC address to the MME.

At S320, the MME may send the MAC address of the UE to the base station.

At S330, the base station may send the MAC address of the UE and the base station side GTP TEID allocated for the UE to the AP.

At S340, the AP may send the AP-side GTP TEID allocated for the UE to the base station.

At S350, the UE may send a data packet to the AP.

At S360, the AP may determine, according to the MAC address, that the data carried in the data packet needs to be sent to the base station, and may encapsulate the base station side GTP TEID in the data packet, and send the data packet to the base station.

At S370, the base station determines, according to the GTP TEID at the base station side, that the data carried in the data packet is from the UE.

It should be noted that, the above exemplifies the embodiment in which the AP communicating with the base station (hereinafter referred to as AP1 for ease of distinction) directly transmits data with the user equipment, but the present invention is not limited thereto. For example, when the user equipment passes When the AP (hereinafter referred to as AP2) is not in communication with the base station, the base station can send the downlink data to AP1 during the downlink, and AP1 transmits the downlink data to AP2 through wireless local area network communication, so that AP2 can send the downlink data to AP2. The downlink data is transmitted to the user equipment. During uplink, the user equipment can transmit uplink data to AP2, and AP2 transmits the downlink data to AP1 through wireless local area network communication, so that AP1 can transmit the uplink data to the base station.

Moreover, in the embodiment of the present invention, data may be directly transmitted between AP1 and AP2, or may be transmitted via other relay devices (for example, one or more APs), which is not particularly limited in the present invention.

According to the data transmission method of the embodiment of the present invention, after the base station determines that the data of the UE needs to be offloaded through the WLAN AP, the data of the UE (including uplink data or downlink data) is transmitted between the GTP tunnel and the WLAN AP. The offload anchor point is located at the base station, and the base station determines the channel bandwidth used for communication between the user equipment and the WLAN AP, so that the base station can determine the offload traffic according to the channel bandwidth, thereby improving the offload effect, and, because the data offloaded by the WLAN AP Reaching the gateway device via the base station can ensure that the gateway device used when establishing a communication connection through the WLAN is the same as the gateway device used when establishing a communication connection through the base station, thereby ensuring service continuity and improving user experience.

Next, the actions of the WLAN AP when performing data transmission according to the method for transmitting data according to the embodiment of the present invention will be described.

FIG. 7 shows a schematic flowchart of a method 400 for transmitting data according to an embodiment of the present invention. The method 400 is executed by a wireless local area network access point WLAN AP in a communication system. The communication system also includes a base station and a user equipment. A bearer for transmitting data of the user equipment is provided between the base station and the gateway device, a General Packet Radio Service Tunneling Protocol (GTP) tunnel is provided between the base station and the WLAN AP, and the method includes:

S420. Transmit target data of the user equipment with the base station via the GTP tunnel, where the target data is determined according to the channel bandwidth used for communication between the user equipment and the WLAN AP, and the target data is on the bearer all or part of the data.

Optionally, before transmitting the target data of the user equipment with the base station via the GTP tunnel, the method 400 further includes:

receiving the first capability information sent by the user equipment and used to indicate the channel bandwidth that the user equipment can support;

Determine the channel bandwidth used for communication with the user equipment according to the channel bandwidth that the WLAN AP can support and the first capability information;

Sending first channel bandwidth indication information to the base station, where the first channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP.

Optionally, before transmitting the target data of the user equipment with the base station via the GTP tunnel, the method 400 further includes:

sending to the base station second capability information indicating the channel bandwidth that the WLAN AP can support, so that the base station can determine the communication between the user equipment and the WLAN AP according to the first capability information and the second capability information. channel bandwidth, wherein the first capability indication information is sent by the user to the base station, and is used to indicate the channel bandwidth that the user equipment can support.

Optionally, the method 400 also includes:

Sending channel switching information to the base station, where the channel switching information is used to indicate that the channel used for communication between the user equipment and the WLAN AP is switched and the time when the switching is completed.

Optionally, transmitting the target data of the user equipment with the base station via the GTP tunnel includes:

S410. Receive first offloading instruction information sent by the base station, where the first offloading instruction information is used to instruct the WLAN AP to transmit data between the base station and the user equipment, where the first offloading instruction information includes identity information of the user equipment , where an identity information is used to uniquely indicate a user equipment in the communication system

According to the first offloading indication information, transmit the target data of the user equipment with the base station via the GTP tunnel.

Optionally, transmitting the target data of the user equipment with the base station via the GTP tunnel includes:

Determine the first GTP tunnel corresponding to the user equipment according to the user information of the user equipment;

The target data of the user equipment is transmitted with the base station via the first GTP tunnel.

Optionally, when the user equipment corresponds to at least two bearers, transmitting the target data of the user equipment with the base station via the GTP tunnel includes:

receiving the first bearer indication information sent by the base station, and forwarding the first bearer indication information to the user equipment, where the first bearer indication information is used to indicate the bearer to which the downlink target data belongs; or

receiving the second bearer indication information sent by the user equipment, and forwarding the second bearer indication information to the base station, where the second bearer indication information is used to indicate the bearer to which the uplink target data belongs.

Optionally, the WLAN AP has a first WLAN AP side protocol stack and a second WLAN AP side protocol stack, and the first WLAN AP side protocol stack is used to implement data processing for communication with the base station on the WLAN AP side, The second WLAN AP side protocol stack is used to implement data processing for communication with the user equipment on the WLAN AP side, and

The transmission of the target data of the user equipment with the base station via the GTP tunnel includes:

input the data obtained from the base station into the first WLAN AP side protocol stack, transmit the data output from the first WLAN AP side protocol stack to the second WLAN AP side protocol stack, and transfer the data from the second WLAN AP side protocol The data output by the stack is sent to the user equipment; or

inputting the data obtained from the user equipment to the second WLAN AP side protocol stack, transmitting the output data from the second WLAN AP side protocol stack to the first WLAN AP side protocol stack, and transferring the data from the first WLAN AP side The data output by the protocol stack is sent to the base station.

Optionally, an adaptation layer is provided between the first WLAN AP side protocol stack and the second WLAN AP side protocol stack, and the adaptation layer is used to perform an AND with the data on the first WLAN AP side protocol stack. Conversion processing between the protocol stacks on the second WLAN AP side; and

The transmission of the target data of the user equipment with the base station via the GTP tunnel includes:

Input the data obtained from the base station into the first WLAN AP side protocol stack, and convert the data format of the data output from the first WLAN AP side protocol stack to the second WLAN AP side protocol stack through the adaptation layer. The data format is transmitted to the second WLAN AP side protocol stack, and the data output from the second WLAN AP side protocol stack is sent to the user equipment; or

The data obtained from the user equipment is input to the second WLAN AP side protocol stack, and the data format of the data output from the second WLAN AP side protocol stack is converted to the first WLAN AP side protocol stack through the adaptation layer. The identified data format is transmitted to the first WLAN AP side protocol stack, and the data output from the first WLAN AP side protocol stack is sent to the base station.

Optionally, when the user equipment corresponds to at least two bearers, transmitting the target data of the user equipment with the base station via the GTP tunnel includes:

determining a second GTP tunnel corresponding to the bearer to which the target data belongs according to the identity information of the user equipment;

The target data of the user equipment is transmitted with the base station via the second GTP tunnel.

According to the data transmission method of the embodiment of the present invention, after the base station determines that the data of the UE needs to be offloaded through the WLAN AP, the data of the UE (including uplink data or downlink data) is transmitted between the GTP tunnel and the WLAN AP. The offload anchor point is located at the base station, and the base station determines the channel bandwidth used for communication between the user equipment and the WLAN AP, so that the base station can determine the offload traffic according to the channel bandwidth, thereby improving the offload effect, and, because the data offloaded by the WLAN AP Reaching the gateway device via the base station can ensure that the gateway device used when establishing a communication connection through the WLAN is the same as the gateway device used when establishing a communication connection through the base station, thereby ensuring service continuity and improving user experience.

Next, the actions of the user equipment when performing data transmission according to the method for transmitting data according to the embodiment of the present invention will be described.

FIG. 8 shows a schematic flowchart of a method 500 for transmitting data according to an embodiment of the present invention. The method 500 is executed by a user equipment in a communication system, and the communication system further includes a base station and a wireless local area network access point WLAN AP. A bearer for transmitting data of the user equipment is provided between the base station and the gateway device, a General Packet Radio Service Tunneling Protocol (GTP) tunnel is provided between the base station and the WLAN AP, and the method includes:

S520. Transmit target data with the base station via the WLAN AP, where the target data is determined according to a channel bandwidth used for communication between the user equipment and the WLAN AP, and the target data is transmitted between the WLAN AP and the WLAN AP. The base stations are transmitted via the GTP tunnel, and the target data is all or part of the data on the bearer.

Optionally, before transmitting target data with the base station via the WLAN AP, the method further includes:

receiving second capability information sent by the WLAN AP and used to indicate the channel bandwidth that the WLAN AP can support;

Determine the channel bandwidth used for communication with the WLAN AP according to the channel bandwidth that the user equipment can support and the second capability information;

Sending first channel bandwidth indication information to the base station, where the first channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP.

Optionally, before transmitting target data with the base station via the WLAN AP, the method further includes:

sending to the base station first capability information indicating the channel bandwidth that the user equipment can support, so that the base station can determine the communication between the user equipment and the WLAN AP according to the first capability information and the second capability information. channel bandwidth, wherein the second capability indication information is sent by the WLAN AP to the base station, and is used to indicate the channel bandwidth that the WLAN AP can support.

Optionally, the transmission of target data with the base station via the WLAN AP includes:

receiving second channel bandwidth indication information sent by the base station, where the second channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP;

Determine uplink target data according to the second channel bandwidth indication information, where the target uplink data is all or part of the uplink data on the bearer;

sending the uplink target data to the WLAN AP, so that the WLAN AP sends the uplink target data to the base station via the GTP tunnel.

Optionally, the method also includes:

Sending channel switching information to the base station, where the channel switching information is used to indicate that the channel used for communication between the user equipment and the WLAN AP is switched and the time when the switching is completed.

Optionally, the transmission of target data with the base station via the WLAN AP includes:

S510. Receive second offloading instruction information sent by the base station, where the second offloading instruction information is used to instruct the user equipment to transmit data between the WLAN AP.

According to the second offloading instruction information, the target data is transmitted with the base station via the WLAN AP.

Optionally, the user equipment has a first user equipment side protocol stack and a second user equipment side protocol stack, and the first user equipment side protocol stack is used to implement data processing for communication with the base station on the user equipment side, The second user equipment side protocol stack is used to implement data processing for communication with the WLAN AP on the user equipment side, wherein at least one protocol of the second user equipment side protocol stack and the first user equipment side protocol stack layers connected, and

The target data transmission with the base station via the WLAN AP includes:

The target data is transmitted with the base station via the WLAN AP through at least one layer of the first user equipment side protocol stack and the second user equipment side protocol stack.

Optionally, the second user equipment side protocol stack includes an adaptation layer, and the adaptation layer is used to perform data transfer between at least one protocol layer of the first user equipment side protocol stack and the second user equipment side protocol stack. conversion processing between the second user equipment side protocol stack and at least one protocol layer of the first user equipment side protocol stack are connected through the adaptation layer; and

The transmission of target data with the base station via the WLAN AP through at least one layer of the first user equipment side protocol stack and the second user equipment side protocol stack includes:

input the uplink target data to at least one protocol layer of the first user equipment side protocol stack, and convert the data format of the data output from at least one protocol layer of the first user equipment side protocol stack to the first user equipment side protocol stack through the adaptation layer The second user equipment side protocol stack can recognize the data format, and transmit it to the second user equipment side protocol stack, and send the data output from the second user equipment side protocol stack to the WLAN AP, so as to send it to the WLAN AP through the WLAN AP. the base station, or

input the data obtained from the WLAN AP into the second user equipment side protocol stack, and convert the data format of the data output from the second user equipment side protocol stack into the first user equipment side protocol stack through the adaptation layer A data format that can be recognized by at least one protocol layer of the first user equipment side protocol stack is transmitted to at least one protocol layer of the first user equipment side protocol stack to obtain downlink target data.

Optionally, the second user equipment side protocol stack includes a bearer mapping layer, where the bearer mapping layer is used to determine the bearer to which the target data belongs, and

When the user equipment corresponds to at least two bearers, the transmission of target data with the base station via the WLAN AP includes:

Determine the bearer to which the uplink target data in the target data belongs through the bearer mapping layer, and generate second bearer indication information through the bearer mapping layer, where the second bearer indication information is used to indicate the bearer to which the uplink target data belongs , and send the second bearer indication information to the WLAN AP, so that the base station determines according to the second bearer indication information forwarded by the WLAN AP or the second uplink GTP tunnel corresponding to the bearer to which the uplink target data belongs the bearer to which the uplink target data belongs; or

Obtaining first bearer indication information sent by the WLAN AP through the bearer mapping layer, the first bearer indication information is used to indicate the bearer to which the downlink target data in the target data belongs, and according to the first bearer indication information, determine The bearer to which the downlink target data belongs, the first bearer indication information is obtained by the WLAN AP from the base station, or determined by the WLAN AP according to the second downlink GTP tunnel corresponding to the bearer to which the downlink target data belongs.

Optionally, the first user equipment side protocol stack includes a reordering layer, the reordering layer is used to determine the position of the target data among all the data on the bearer, and at least one protocol of the first user equipment side protocol stack layer is the reordering layer, and

The target data transmission with the base station via the WLAN AP includes:

Through the reordering layer, determine the position of the uplink target data in the target data among all the uplink data on the bearer, and generate second position indication information through the reordering layer, and the second position indication information is used to indicate the uplink position of the target data in all uplink data on the bearer, and send the second position indication information to the WLAN AP, so that the base station can determine the position of the uplink target data according to the second position indication information forwarded by the WLAN AP. position in all upstream data on the bearer; or

Obtain the first location indication information forwarded by the WLAN AP through the reordering layer, the first location indication information is used to indicate the location of the downlink target data in the target data among all the downlink data on the bearer, and according to the The first position indication information determines the position of the downlink target data in all the downlink data on the bearer, and the first position indication information is determined by the base station and sent to the WLAN AP.

According to the data transmission method of the embodiment of the present invention, after the base station determines that the data of the UE needs to be offloaded through the WLAN AP, the data of the UE (including uplink data or downlink data) is transmitted between the GTP tunnel and the WLAN AP. The offload anchor point is located at the base station, and the base station determines the channel bandwidth used for communication between the user equipment and the WLAN AP, so that the base station can determine the offload traffic according to the channel bandwidth, thereby improving the offload effect, and, because the data offloaded by the WLAN AP Reaching the gateway device via the base station can ensure that the gateway device used when establishing a communication connection through the WLAN is the same as the gateway device used when establishing a communication connection through the base station, thereby ensuring service continuity and improving user experience.

Above, the method for transmitting data according to the embodiment of the present invention is described in detail with reference to FIG. 1 to FIG. 8 . Next, the device for transmitting data according to the embodiment of the present invention is described in detail with reference to FIG. 9 to FIG. 11 .

Fig. 9 shows a schematic block diagram of an apparatus 600 for transmitting data according to an embodiment of the present invention. Between the device 600 and the gateway device, a bearer for transmitting user equipment data is provided, and a General Packet Radio Service Tunneling Protocol GTP tunnel is provided between the device 600 and the wireless local area network access point WLAN AP, and the device 600 includes:

The first base station side protocol stack 610, configured to implement data processing for communication with the user equipment;

The second base station side protocol stack 620 is configured to implement data processing for communication with the WLAN AP, wherein the second base station side protocol stack 620 is connected to at least one protocol layer of the first base station side protocol stack 610;

A determining unit 640, configured to determine the channel bandwidth used for communication between the user equipment and the WLAN AP;

The transceiver unit 630 is connected to the second base station side protocol stack 620, and is configured to transmit target data with the user equipment through the WLAN AP through the GTP tunnel according to the channel bandwidth determined by the determining unit 640, wherein the Target data is all or part of the data on the bearer.

Optionally, the transceiver unit 630 is also configured to receive first channel bandwidth indication information sent by the user equipment or the WLAN AP, where the first channel bandwidth indication information is used to indicate that the communication between the user equipment and the WLAN AP The used channel bandwidth, the channel bandwidth is determined after negotiation between the user equipment and the WLAN AP;

The determining unit 640 is specifically configured to determine the channel bandwidth used for communication between the user equipment and the WLAN AP according to the first channel bandwidth indication information.

Optionally, the transceiving unit 630 is also configured to receive the first capability information sent by the user equipment and used to indicate the channel bandwidth that the user equipment can support, and receive the first capability information sent by the WLAN AP and used to indicate the channel bandwidth that the WLAN AP can support. the second capability information of the channel bandwidth;

The determining unit 640 is specifically configured to determine the channel bandwidth used for communication between the user equipment and the WLAN AP according to the first capability information and the second capability information.

Optionally, the transceiver unit 630 is further configured to send second channel bandwidth indication information to the user equipment, where the second channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP, so that determining, by the user equipment, uplink target data according to the second channel bandwidth indication information, where the target uplink data is all or part of the uplink data on the bearer;

The transceiving unit 630 is specifically configured to receive the uplink target data sent by the WLAN AP via the GTP tunnel, the uplink target data is sent to the WLAN AP by the user equipment.

Optionally, the determining unit 640 is further configured to determine downlink target data according to the channel bandwidth, where the target downlink data is all or part of the downlink data on the bearer;

The transceiving unit 630 is specifically configured to send the downlink target data to the WLAN AP via the GTP tunnel, so that the WLAN AP forwards the downlink target data to the user equipment.

Optionally, the transceiver unit 630 is also configured to receive channel switching information sent by the user equipment or the WLAN AP, where the channel switching information is used to indicate that the channel used for communication between the user equipment and the WLAN AP has switched and completed the time of the switch;

The transceiver unit 630 is specifically configured to transmit target data with the user equipment through the WLAN AP via the GTP tunnel according to the channel bandwidth and the channel switching indication information.

Optionally, the transceiver unit 630 is further configured to send first offload instruction information to the WLAN AP, where the first offload instruction information is used to instruct the WLAN AP to transmit data between the base station and the user equipment, and the first offload instruction information is used to instruct the WLAN AP to transmit data between the base station and the user equipment. The indication information includes identity information of the user equipment, where one piece of identity information is used to uniquely indicate a user equipment in the communication system.

Optionally, the transceiving unit 630 is further configured to send second offloading instruction information to the user equipment, where the second offloading instruction information is used to instruct data transmission between the user equipment and the WLAN AP.

Optionally, the determining unit 640 is also used to determine the first GTP tunnel corresponding to the user equipment;

The transceiving unit 630 is specifically configured to transmit target data with the user equipment through the WLAN AP via the first GTP tunnel according to the channel bandwidth.

Optionally, when the user equipment corresponds to at least two bearers, the determining unit 640 is further configured to determine a second GTP tunnel corresponding to the bearer to which the target data belongs;

The transceiving unit 630 is specifically configured to transmit the target data with the user equipment through the WLAN AP via the second GTP tunnel according to the channel bandwidth.

Optionally, the second base station side protocol stack 620 includes an adaptation layer, and the adaptation layer is used to implement data between at least one protocol layer of the first base station side protocol stack 610 and the second base station side protocol stack 620 During conversion processing, at least one protocol layer of the second base station-side protocol stack 620 and the first base station-side protocol stack 610 is connected through the adaptation layer.

Optionally, the second base station side protocol stack 620 includes a bearer mapping layer, where the bearer mapping layer is used to determine the bearer to which the target data belongs, and

When the user equipment corresponds to at least two bearers, the determining unit 640 is specifically configured to determine the downlink target data according to the channel bandwidth, and determine the bearer to which the downlink target data belongs through the bearer mapping layer, and through the The bearer mapping layer generates first bearer indication information, where the first bearer indication information is used to indicate the bearer to which the downlink target data belongs;

The transceiving unit 630 is further configured to send the first bearer indication information to the WLAN AP, so that the user equipment can determine the bearer to which the downlink target data belongs according to the first bearer indication information forwarded by the WLAN AP.

Optionally, the second base station side protocol stack 620 includes a bearer mapping layer, where the bearer mapping layer is used to determine the bearer to which the target data belongs, and

When the user equipment corresponds to at least two bearers, the determining unit 640 is specifically configured to acquire second bearer indication information forwarded by the WLAN AP through the bearer mapping layer, where the second bearer indication information is used to indicate uplink target data The bearer it belongs to, the uplink target data is determined according to the channel bandwidth;

It is used to determine the bearer to which the uplink target data belongs according to the second bearer indication information, the second bearer indication information is determined by the user equipment and sent to the WLAN AP.

Optionally, the first base station side protocol stack 610 includes a reordering layer, the reordering layer is used to determine the position of the target data in all data on the bearer, and at least one protocol of the first base station side protocol stack 610 layer is the reordering layer, and

The determining unit 640 is further configured to determine the downlink target data according to the channel bandwidth, determine the position of the downlink target data in all downlink data on the bearer through the reordering layer, and generate the first location indication information, where the first location indication information is used to indicate the location of the downlink target data in all downlink data on the bearer;

The transceiver unit 630 is further configured to send the first location indication information to the WLAN AP, so that the user equipment can determine that the downlink target data is included in all downlink data on the bearer according to the first location indication information forwarded by the WLAN AP. s position.

Optionally, the first base station side protocol stack 610 includes a reordering layer, the reordering layer is used to determine the position of the target data in all data on the bearer, and at least one protocol of the first base station side protocol stack 610 layer is the reordering layer, and

The determining unit 640 is further configured to obtain second location indication information forwarded by the WLAN AP through the reordering layer, where the second location indication information is used to indicate the location of the uplink target data in all uplink data on the bearer, the Uplink target data is determined according to the channel bandwidth;

It is used to determine the position of the uplink target data in all the uplink data on the bearer according to the second position indication information, the second position indication information is determined by the user equipment and sent to the WLAN AP.

The device 600 for transmitting data according to the embodiment of the present invention may correspond to the base station in the method of the embodiment of the present invention, and each unit or module in the device 600 for transmitting data and the above-mentioned other operations and/or functions are respectively in order to realize the For the sake of brevity, the corresponding flow of the method 100 in 4 will not be repeated here.

According to the device for transmitting data according to the embodiment of the present invention, after the base station determines that the data of the UE needs to be offloaded through the WLAN AP, the data of the UE (including uplink data or downlink data) is transmitted between the GTP tunnel and the WLAN AP, so that the The offload anchor point is located at the base station, and the base station determines the channel bandwidth used for communication between the user equipment and the WLAN AP, so that the base station can determine the offload traffic according to the channel bandwidth, thereby improving the offload effect, and, because the data offloaded by the WLAN AP Reaching the gateway device via the base station can ensure that the gateway device used when establishing a communication connection through the WLAN is the same as the gateway device used when establishing a communication connection through the base station, thereby ensuring service continuity and improving user experience.

Fig. 10 shows a schematic block diagram of an apparatus 700 for transmitting data according to an embodiment of the present invention. A General Packet Radio Service Tunneling Protocol GTP tunnel is provided between the device 700 and the base station, and a bearer for transmitting user equipment data is provided between the base station and the gateway device. As shown in FIG. 10 , the device 700 includes:

The first WLAN AP side protocol stack 710, configured to implement data processing for communication with the base station;

The second WLAN AP side protocol stack 720 is connected to the first WLAN AP side protocol stack 710, and is used to implement data processing for communication with the user equipment;

The transceiver unit 730 is connected to the first WLAN AP side protocol stack 710 and the second WLAN AP side protocol stack 720, and is configured to transmit the target data of the user equipment with the base station via the GTP tunnel, wherein the target data is Determined according to the channel bandwidth used for communication between the user equipment and the WLAN AP, the target data is all or part of the data on the bearer.

Optionally, the transceiving unit 730 is further configured to receive first capability information sent by the user equipment and used to indicate the channel bandwidth that the user equipment can support;

The device 700 also includes:

A determining unit 740, configured to determine the channel bandwidth used for communication with the user equipment according to the channel bandwidth that the WLAN AP can support and the first capability information; and

The transceiver unit 730 is further configured to send first channel bandwidth indication information to the base station, where the first channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP.

Optionally, the transceiver unit 730 is further configured to send second capability information indicating the channel bandwidth that the WLAN AP can support to the base station, so that the base station can determine the channel bandwidth according to the first capability information and the second capability information. The channel bandwidth used for communication between the user equipment and the WLAN AP, wherein the first capability indication information is sent by the user to the base station, and is used to indicate the channel bandwidth that the user equipment can support.

Optionally, the transceiver unit 730 is further configured to send channel switching information to the base station, where the channel switching information is used to indicate that the channel used for communication between the user equipment and the WLAN AP is switched and when the switching is completed.

Optionally, the transceiver unit 730 is further configured to receive first offload indication information sent by the base station, where the first offload indication information is used to instruct the WLAN AP to transmit data between the base station and the user equipment, and the first offload The indication information includes identity information of the user equipment, where one piece of identity information is used to uniquely indicate a user equipment in the communication system;

It is used for transmitting the target data of the user equipment with the base station via the GTP tunnel according to the first offloading indication information.

Optionally, the apparatus 700 further includes: a determining unit 740 configured to determine the first GTP tunnel corresponding to the user equipment according to the user information of the user equipment;

The transceiving unit 730 is specifically configured to transmit the target data of the user equipment with the base station via the first GTP tunnel.

Optionally, when the user equipment corresponds to at least two bearers, the transceiving unit 730 is further configured to receive first bearer indication information sent by the base station, and forward the first bearer indication information to the user equipment, the first bearer indication information The bearer indication information is used to indicate the bearer to which the downlink target data belongs; or

The transceiving unit 730 is further configured to receive second bearer indication information sent by the user equipment, and forward the second bearer indication information to the base station, where the second bearer indication information is used to indicate the bearer to which the uplink target data belongs.

Optionally, an adaptation layer is provided between the first WLAN AP side protocol stack 710 and the second WLAN AP side protocol stack 720, and the adaptation layer is used to implement data in the first WLAN AP side protocol stack 710 and the conversion process between the protocol stack 720 on the second WLAN AP side.

Optionally, when the user equipment corresponds to at least two bearers, the apparatus 700 further includes:

A determining unit 740, configured to determine a second GTP tunnel corresponding to the bearer to which the target data belongs according to the identity information of the user equipment;

The transceiving unit 730 is specifically configured to transmit the target data of the user equipment with the base station via the second GTP tunnel.

The device 700 for transmitting data according to the embodiment of the present invention may correspond to the AP in the method of the embodiment of the present invention, and each unit or module in the device 700 for transmitting data and the above-mentioned other operations and/or functions are respectively in order to realize the For the sake of brevity, the corresponding process of the method 400 in 7 is not repeated here.

According to the device for transmitting data according to the embodiment of the present invention, after the base station determines that the data of the UE needs to be offloaded through the WLAN AP, the data of the UE (including uplink data or downlink data) is transmitted between the GTP tunnel and the WLAN AP, so that the The offload anchor point is located at the base station, and the base station determines the channel bandwidth used for communication between the user equipment and the WLAN AP, so that the base station can determine the offload traffic according to the channel bandwidth, thereby improving the offload effect, and, because the data offloaded by the WLAN AP Reaching the gateway device via the base station can ensure that the gateway device used when establishing a communication connection through the WLAN is the same as the gateway device used when establishing a communication connection through the base station, thereby ensuring service continuity and improving user experience.

Fig. 11 shows a schematic block diagram of an apparatus 800 for transmitting data according to an embodiment of the present invention. As shown in Figure 11, the device 800 includes:

The first user equipment side protocol stack 810 is configured to implement data processing for communication with a base station, wherein a bearer for transmitting data of the user equipment is provided between the base station and the gateway device, and the base station is connected to a wireless local area network There is a General Packet Radio Service Tunneling Protocol GTP tunnel between the entry point WLAN APs;

A second user equipment side protocol stack 820, configured to implement data processing for communication with the WLAN AP, wherein the second user equipment side protocol stack 820 is connected to at least one protocol layer of the first user equipment side protocol stack 810 ;

The transceiver unit 830 is connected to the second user equipment side protocol stack 820, and is used to transmit target data with the base station via the WLAN AP, wherein the target data is based on the communication between the user equipment and the WLAN AP. The used channel bandwidth is determined, the target data is transmitted between the WLAN AP and the base station via the GTP tunnel, and the target data is all or part of the data on the bearer.

Optionally, the transceiving unit 830 is also configured to receive second capability information sent by the WLAN AP and used to indicate the channel bandwidth that the WLAN AP can support;

The device 800 also includes:

A determining unit 840, configured to determine the channel bandwidth used for communication with the WLAN AP according to the channel bandwidth that the user equipment can support and the second capability information;

The transceiver unit 830 is further configured to send first channel bandwidth indication information to the base station, where the first channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP.

Optionally, the transceiver unit 830 is further configured to send to the base station first capability information indicating the channel bandwidth that the user equipment can support, so that the base station can determine the channel bandwidth according to the first capability information and the second capability information. The channel bandwidth used for communication between the user equipment and the WLAN AP, wherein the second capability indication information is sent by the WLAN AP to the base station, and is used to indicate the channel bandwidth that the WLAN AP can support.

Optionally, the transceiver unit 830 is also configured to receive second channel bandwidth indication information sent by the base station, where the second channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP;

The device 800 also includes:

A determining unit 840, configured to determine uplink target data according to the second channel bandwidth indication information, where the target uplink data is all or part of the uplink data on the bearer;

The transceiving unit 830 is specifically configured to send the uplink target data to the WLAN AP, so that the WLAN AP sends the uplink target data to the base station via the GTP tunnel.

Optionally, the transceiver unit 830 is further configured to send channel switching information to the base station, where the channel switching information is used to indicate that the channel used for communication between the user equipment and the WLAN AP is switched and when the switching is completed.

Optionally, the transceiving unit 830 is further configured to receive second offloading instruction information sent by the base station, where the second offloading instruction information is used to instruct the user equipment to transmit data between the WLAN AP.

It is used for determining, according to the second offload indication information, that data transmission needs to be performed with the base station via the WLAN AP.

Optionally, the second user equipment side protocol stack 820 includes an adaptation layer, and the adaptation layer is used to implement at least one protocol layer of the first user equipment side protocol stack 810 and the second user equipment side protocol for data. For conversion processing between stacks 820, at least one protocol layer of the second user equipment side protocol stack 820 and the first user equipment side protocol stack 810 is connected through the adaptation layer.

Optionally, the second user equipment side protocol stack 820 includes a bearer mapping layer, where the bearer mapping layer is used to determine the bearer to which the target data belongs, and

When the user equipment corresponds to at least two bearers,

The sending unit is further configured to determine the bearer to which the uplink target data in the target data belongs through the bearer mapping layer, and generate second bearer indication information through the bearer mapping layer, where the second bearer indication information is used to indicate the uplink the bearer to which the target data belongs, and send the second bearer indication information to the WLAN AP, so that the base station forwards the second bearer indication information or the uplink corresponding to the bearer to which the uplink target data belongs The second GTP tunnel, determining the bearer to which the uplink target data belongs; or

The sending unit is further configured to obtain the first bearer indication information sent by the WLAN AP through the bearer mapping layer, the first bearer indication information is used to indicate the bearer to which the downlink target data in the target data belongs, and according to the first bearer indication information A bearer indication information to determine the bearer to which the downlink target data belongs, the first bearer indication information is obtained by the WLAN AP from the base station, or the WLAN AP according to the downlink first bearer corresponding to the bearer to which the downlink target data belongs Two GTP tunnels identified.

Optionally, the first user equipment side protocol stack 810 includes a reordering layer, the reordering layer is used to determine the position of the target data in all data on the bearer, and the first user equipment side protocol stack 810 includes at least a protocol layer for the reordering layer, and

The transceiving unit 830 is also configured to determine the position of the uplink target data in the target data among all the uplink data on the bearer through the reordering layer, and generate second position indication information through the reordering layer, the second position The indication information is used to indicate the position of the uplink target data in all the uplink data on the bearer, and send the second position indication information to the WLAN AP, so that the base station forwards the second position indication information according to the WLAN AP, determining the position of the uplink target data in all uplink data on the bearer; or

The transceiving unit 830 is also configured to obtain the first location indication information forwarded by the WLAN AP through the reordering layer, the first location indication information is used to indicate all downlink data of the downlink target data in the target data on the bearer and determine the position of the downlink target data in all the downlink data on the bearer according to the first position indication information, which is determined by the base station and sent to the WLAN AP.

The apparatus 800 for transmitting data according to the embodiment of the present invention may correspond to the user equipment (target user equipment) in the method of the embodiment of the present invention, and each unit in the apparatus 800 for transmitting data is a module and the above-mentioned other operations and/or or functions are respectively to realize the corresponding flow of the method 500 in FIG. 8 , and for the sake of brevity, details are not described here again.

According to the device for transmitting data according to the embodiment of the present invention, after the base station determines that the data of the UE needs to be offloaded through the WLAN AP, the data of the UE (including uplink data or downlink data) is transmitted between the GTP tunnel and the WLAN AP, so that the The offload anchor point is located at the base station, and the base station determines the channel bandwidth used for communication between the user equipment and the WLAN AP, so that the base station can determine the offload traffic according to the channel bandwidth, thereby improving the offload effect, and, because the data offloaded by the WLAN AP Reaching the gateway device via the base station can ensure that the gateway device used when establishing a communication connection through the WLAN is the same as the gateway device used when establishing a communication connection through the base station, thereby ensuring service continuity and improving user experience.

The method for transmitting data according to the embodiment of the present invention has been described in detail above with reference to FIGS. 1 to 8 . Next, the device for transmitting data according to the embodiment of the present invention will be described in detail with reference to FIGS. 12 to 14 .

Fig. 12 shows a schematic block diagram of a device 900 for transmitting data according to an embodiment of the present invention. Between the device 900 and the gateway device, a bearer for transmitting user equipment data is provided, and a general packet radio service tunneling protocol GTP tunnel is provided between the device and the WLAN AP. As shown in FIG. 12 , the device 900 includes:

bus 910;

A processor 920 connected to the bus 910;

A memory 930 connected to the bus 910;

A transceiver 940 connected to the bus 910

Wherein, the processor 920 calls the program stored in the memory 930 through the bus 910, so as to determine the channel bandwidth used for communication between the user equipment and the WLAN AP;

and controlling the transceiver 940 to transmit target data with the user equipment through the WLAN AP according to the channel bandwidth, wherein the target data is all or part of the data on the bearer.

Optionally, the processor 920 is specifically configured to control the transceiver 940 to receive first channel bandwidth indication information sent by the user equipment or the WLAN AP, where the first channel bandwidth indication information is used to indicate that the user equipment and the WLAN AP The channel bandwidth used for communication between WLAN APs is determined after negotiation between the user equipment and the WLAN AP;

It is used to determine the channel bandwidth used for communication between the user equipment and the WLAN AP according to the first channel bandwidth indication information.

Optionally, the processor 920 is specifically configured to control the transceiver 940 to receive the first capability information sent by the user equipment for indicating the channel bandwidth that the user equipment can support, and the first capability information sent by the WLAN AP for indicating the channel bandwidth that the WLAN AP can support. The second capability information of the channel bandwidth that can be supported;

It is used to determine the channel bandwidth used for communication between the user equipment and the WLAN AP according to the first capability information and the second capability information.

Optionally, the processor 920 is specifically configured to control the transceiver 940 to send second channel bandwidth indication information to the user equipment, where the second channel bandwidth indication information is used to indicate the communication between the user equipment and the WLAN AP. channel bandwidth, so that the user equipment determines uplink target data according to the second channel bandwidth indication information, where the target uplink data is all or part of the uplink data on the bearer;

It is used to control the transceiver 940 to receive the uplink target data sent by the WLAN AP via the GTP tunnel, where the uplink target data is sent by the user equipment to the WLAN AP.

Optionally, the processor 920 is specifically configured to determine downlink target data according to the channel bandwidth, where the target downlink data is all or part of the downlink data on the bearer;

It is used for controlling the transceiver 940 to send the downlink target data to the WLAN AP via the GTP tunnel, so that the WLAN AP forwards the downlink target data to the user equipment.

Optionally, the processor 920 is specifically configured to control the transceiver 940 to receive channel switching information sent by the user equipment or the WLAN AP, where the channel switching information is used to indicate the channel switching information used for communication between the user equipment and the WLAN AP. Channel switching occurs and the time when the switching is completed;

and controlling the transceiver 940 to transmit target data with the user equipment through the WLAN AP via the GTP tunnel according to the channel bandwidth and the channel switching indication information.

Optionally, the processor 920 is specifically configured to control the transceiver 940 to send first offload instruction information to the WLAN AP, where the first offload instruction information is used to instruct the WLAN AP to transmit data between the base station and the user equipment , the first offload indication information includes identity information of the user equipment, where one piece of identity information is used to uniquely indicate a user equipment in the communication system.

Optionally, the processor 920 is specifically configured to control the transceiver 940 to send second offloading instruction information to the user equipment, where the second offloading instruction information is used to instruct data transmission between the user equipment and the WLAN AP.

Optionally, the processor 920 is specifically configured to determine a first GTP tunnel corresponding to the user equipment;

and controlling the transceiver 940 to transmit target data with the user equipment through the WLAN AP via the first GTP tunnel according to the channel bandwidth.

Optionally, when the user equipment corresponds to at least two bearers, optionally, the processor 920 is specifically configured to determine a second GTP tunnel corresponding to the bearer to which the target data belongs;

and controlling the transceiver 940 to transmit the target data with the user equipment through the WLAN AP via the second GTP tunnel according to the channel bandwidth.

Optionally, the device has a first base station side protocol stack and a second base station side protocol stack, the first base station side protocol stack is used to implement data processing for communication with the user equipment on the base station side, and the second base station side protocol stack The protocol stack is used to implement data processing for communication with the WLAN AP on the base station side, wherein the second base station side protocol stack is connected to at least one protocol layer of the first base station side protocol stack, and

The processor 920 is specifically configured to control the transceiver 940 to pass through at least one layer of the first base station side protocol stack and the second base station side protocol stack according to the channel bandwidth, through the GTP tunnel, through the WLAN AP and the user The device performs the transfer of the target data.

Optionally, the second base station side protocol stack includes an adaptation layer, and the adaptation layer is used to convert data between at least one protocol layer of the first base station side protocol stack and the second base station side protocol stack Processing, the second base station side protocol stack is connected to at least one protocol layer of the first base station side protocol stack through the adaptation layer, and

The processor 920 is specifically used to control the transceiver 940 to input the downlink target data determined according to the channel bandwidth to at least one protocol layer of the protocol stack on the first base station side, through which the first base station side protocol The data format of the data output by at least one protocol layer of the stack is converted into a data format recognizable by the second base station side protocol stack, and transmitted to the second base station side protocol stack, and the data output from the second base station side protocol stack Send to the WLAN AP via the GTP tunnel, so as to send to the user equipment through the WLAN AP; or

The processor 920 is specifically configured to control the transceiver 940 to input the data obtained from the WLAN AP via the GTP tunnel to the second base station side protocol stack, and output the data from the second base station side protocol stack through the adaptation layer The data format of the data is converted into a data format that can be recognized by at least one protocol layer of the first base station side protocol stack, and transmitted to at least one protocol layer of the first base station side protocol stack to obtain the uplink target data of the user equipment, The uplink target data is determined by the user equipment according to the channel bandwidth.

Optionally, the second base station side protocol stack includes a bearer mapping layer, where the bearer mapping layer is used to determine the bearer to which the target data belongs, and

When the user equipment corresponds to at least two bearers, the processor 920 is specifically configured to determine downlink target data according to the channel bandwidth;

Determine the bearer to which the downlink target data belongs through the bearer mapping layer, and generate first bearer indication information through the bearer mapping layer, where the first bearer indication information is used to indicate the bearer to which the downlink target data belongs;

and controlling the transceiver 940 to send the first bearer indication information to the WLAN AP, so that the user equipment determines the bearer to which the downlink target data belongs according to the first bearer indication information forwarded by the WLAN AP.

Optionally, the second base station side protocol stack includes a bearer mapping layer, where the bearer mapping layer is used to determine the bearer to which the target data belongs, and

When the user equipment corresponds to at least two bearers, the processor 920 is specifically configured to obtain, through the bearer mapping layer, second bearer indication information forwarded by the WLAN AP, where the second bearer indication information is used to indicate uplink target data The bearer it belongs to, the uplink target data is determined according to the channel bandwidth;

It is used to determine the bearer to which the uplink target data belongs according to the second bearer indication information, the second bearer indication information is determined by the user equipment and sent to the WLAN AP.

Optionally, the first base station side protocol stack includes a reordering layer, the reordering layer is used to determine the position of the target data in all data on the bearer, and at least one protocol layer of the first base station side protocol stack is the reordering layer, and

The processor 920 is specifically configured to determine downlink target data according to the channel bandwidth;

Determine the position of the downlink target data in all downlink data on the bearer through the reordering layer, and generate first position indication information through the reordering layer, where the first position indication information is used to indicate the downlink target The location of the data in all downlink data on the bearer;

It is used to control the transceiver 940 to send the first location indication information to the WLAN AP, so that the user equipment determines that the downlink target data is included in all downlink data on the bearer according to the first location indication information forwarded by the WLAN AP s position.

Optionally, the first base station side protocol stack includes a reordering layer, the reordering layer is used to determine the position of the target data in all data on the bearer, and at least one protocol layer of the first base station side protocol stack is the reordering layer, and

The processor 920 is specifically configured to obtain the second location indication information forwarded by the WLAN AP through the reordering layer, the second location indication information is used to indicate the location of the uplink target data in all uplink data on the bearer, the Uplink target data is determined according to the channel bandwidth;

It is used to determine the position of the uplink target data in all the uplink data on the bearer according to the second position indication information, the second position indication information is determined by the user equipment and sent to the WLAN AP.

The device 900 for transmitting data according to the embodiment of the present invention may correspond to the base station in the method of the embodiment of the present invention, and each unit or module in the device 900 for transmitting data and the above-mentioned other operations and/or functions are respectively in order to realize the For the sake of brevity, the corresponding flow of the method 100 in 4 will not be repeated here.

According to the device for transmitting data according to the embodiment of the present invention, after the base station determines that the data of the UE needs to be offloaded through the WLAN AP, the data of the UE (including uplink data or downlink data) is transmitted between the GTP tunnel and the WLAN AP, so that the The offload anchor point is located at the base station, and the base station determines the channel bandwidth used for communication between the user equipment and the WLAN AP, so that the base station can determine the offload traffic according to the channel bandwidth, thereby improving the offload effect, and, because the data offloaded by the WLAN AP Reaching the gateway device via the base station can ensure that the gateway device used when establishing a communication connection through the WLAN is the same as the gateway device used when establishing a communication connection through the base station, thereby ensuring service continuity and improving user experience.

Fig. 13 shows a schematic block diagram of a device 1000 for transmitting data according to an embodiment of the present invention. A General Packet Radio Service Tunneling Protocol GTP tunnel is set between the device 1000 and the base station, and a bearer for transmitting user equipment data is set between the base station and the gateway device. As shown in FIG. 13 , the device 1000 includes:

bus 1010;

A processor 1020 connected to the bus 1010;

A memory 1030 connected to the bus 1010;

A transceiver 1040 connected to the bus 1010

Wherein, the processor 1020 invokes the program stored in the memory 1030 through the bus 1010, so as to control the transceiver 1040 to transmit the target data of the user equipment with the base station via the GTP tunnel, wherein the target data is Determined according to the channel bandwidth used for communication between the user equipment and the WLAN AP, the target data is all or part of the data on the bearer.

Optionally, the processor 1020 is specifically configured to control the transceiver 1040 to receive the first capability information sent by the user equipment and used to indicate the channel bandwidth that the user equipment can support;

It is used to determine the channel bandwidth used for communication with the user equipment according to the channel bandwidth that the WLAN AP can support and the first capability information;

It is used to control the transceiver 1040 to send first channel bandwidth indication information to the base station, where the first channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP.

Optionally, the processor 1020 is specifically configured to control the transceiver 1040 to send to the base station second capability information indicating the channel bandwidth that the WLANAP can support, so that the base station information to determine the channel bandwidth used for communication between the user equipment and the WLAN AP, wherein the first capability indication information is sent by the user to the base station, and is used to indicate the channel bandwidth that the user equipment can support.

Optionally, the processor 1020 is specifically configured to control the transceiver 1040 to send channel switching information to the base station, where the channel switching information is used to indicate switching of a channel used for communication between the user equipment and the WLAN AP and to complete the communication. time to switch.

Optionally, the processor 1020 is specifically configured to control the transceiver 1040 to receive first offload instruction information sent by the base station, where the first offload instruction information is used to instruct the WLAN AP to transmit data between the base station and the user equipment , the first offload indication information includes identity information of the user equipment, where the identity information is used to uniquely indicate a user equipment in the communication system;

and controlling the transceiver 1040 to transmit the target data of the user equipment with the base station via the GTP tunnel according to the first offloading indication information.

Optionally, the processor 1020 is specifically configured to determine the first GTP tunnel corresponding to the user equipment according to the user information of the user equipment;

It is used for controlling the transceiver 1040 to transmit the target data of the user equipment with the base station via the first GTP tunnel.

Optionally, when the user equipment corresponds to at least two bearers, the processor 1020 is specifically configured to control the transceiver 1040 to receive the first bearer indication information sent by the base station, and forward the first bearer indication to the user equipment information, where the first bearer indication information is used to indicate the bearer to which the downlink target data belongs; or

The processor 1020 is specifically configured to control the transceiver 1040 to receive the second bearer indication information sent by the user equipment, and forward the second bearer indication information to the base station, where the second bearer indication information is used to indicate that the uplink target data belongs to bearer.

Optionally, the device has a first WLAN AP side protocol stack and a second WLAN AP side protocol stack, the first WLAN AP side protocol stack is used to implement data processing for communication with the base station on the WLAN AP side, the second Two WLAN AP side protocol stacks are used to implement data processing for communication with the user equipment on the WLAN AP side, and

The processor 1020 is specifically used to control the transceiver 1040 to input the data obtained from the base station into the first WLAN AP side protocol stack, and transmit the data output from the first WLAN AP side protocol stack to the second WLAN AP side A protocol stack, sending the data output from the second WLAN AP side protocol stack to the user equipment; or

The processor 1020 is specifically configured to control the transceiver 1040 to input the data obtained from the user equipment to the second WLAN AP side protocol stack, and transmit the data output from the second WLAN AP side protocol stack to the first WLAN AP The side protocol stack sends the data output from the first WLAN AP side protocol stack to the base station.

Optionally, an adaptation layer is provided between the first WLAN AP side protocol stack and the second WLAN AP side protocol stack, and the adaptation layer is used to perform an AND with the data on the first WLAN AP side protocol stack. Conversion processing between the protocol stacks on the second WLAN AP side; and

The processor 1020 is specifically configured to control the transceiver 1040 to input the data obtained from the base station to the first WLAN AP side protocol stack, and to output the data from the first WLAN AP side protocol stack through the adaptation layer in a data format converting into a data format recognizable by the second WLAN AP side protocol stack, and transmitting to the second WLAN AP side protocol stack, and sending the data output from the second WLAN AP side protocol stack to the user equipment; or

The processor 1020 is specifically configured to control the transceiver 1040 to input the data obtained from the user equipment to the second WLAN AP side protocol stack, and pass the adaptation layer to output data from the second WLAN AP side protocol stack The format is converted into a data format recognizable by the first WLAN AP side protocol stack, and transmitted to the first WLAN AP side protocol stack, and the data output from the first WLAN AP side protocol stack is sent to the base station.

Optionally, when the user equipment corresponds to at least two bearers, the processor 1020 is specifically configured to determine a second GTP tunnel corresponding to the bearer to which the target data belongs according to the identity information of the user equipment;

It is used for controlling the transceiver 1040 to transmit the target data of the user equipment with the base station via the second GTP tunnel.

The device 1000 for transmitting data according to the embodiment of the present invention may correspond to the AP in the method of the embodiment of the present invention, and each unit or module in the device 1000 for transmitting data and the above-mentioned other operations and/or functions are respectively in order to realize the For the sake of brevity, the corresponding process of the method 400 in 7 is not repeated here.

According to the device for transmitting data according to the embodiment of the present invention, after the base station determines that the data of the UE needs to be offloaded through the WLAN AP, the data of the UE (including uplink data or downlink data) is transmitted between the GTP tunnel and the WLAN AP, so that the The offload anchor point is located at the base station, and the base station determines the channel bandwidth used for communication between the user equipment and the WLAN AP, so that the base station can determine the offload traffic according to the channel bandwidth, thereby improving the offload effect, and, because the data offloaded by the WLAN AP Reaching the gateway device via the base station can ensure that the gateway device used when establishing a communication connection through the WLAN is the same as the gateway device used when establishing a communication connection through the base station, thereby ensuring service continuity and improving user experience.

Fig. 14 shows a schematic block diagram of a device 1100 for transmitting data according to an embodiment of the present invention. As shown in Figure 11, the device 1100 includes:

bus 1110;

A processor 1120 connected to the bus 1110;

A memory 1130 connected to the bus 1110;

The transceiver 1140 connected to the bus 1110

Wherein, the processor 1120 invokes the program stored in the memory 1130 via the bus 1110 to control the transceiver 1140 to transmit target data with the base station via the WLAN AP, wherein the target data is based on the The channel bandwidth used for communication between the user equipment and the WLAN AP is determined, the target data is transmitted between the WLAN AP and the base station via the GTP tunnel, and the target data is all or part of the data on the bearer.

Optionally, the processor 1120 is specifically configured to control the transceiver 1140 to receive second capability information sent by the WLAN AP and used to indicate the channel bandwidth that the WLAN AP can support;

It is used to determine the channel bandwidth used for communication with the WLAN AP according to the channel bandwidth that the user equipment can support and the second capability information;

It is used to control the transceiver 1140 to send first channel bandwidth indication information to the base station, where the first channel bandwidth indication information is used to indicate the channel bandwidth used for communication between the user equipment and the WLAN AP.

Optionally, the processor 1120 is specifically configured to control the transceiver 1140 to send to the base station first capability information indicating the channel bandwidth that the user equipment can support, so that the base station can use the first capability information and the second The capability information determines the channel bandwidth used for communication between the user equipment and the WLAN AP, wherein the second capability indication information is sent by the WLAN AP to the base station to indicate the channel bandwidth that the WLAN AP can support.

Optionally, the processor 1120 is specifically configured to control the transceiver 1140 to receive second channel bandwidth indication information sent by the base station, where the second channel bandwidth indication information is used to indicate the communication between the user equipment and the WLAN AP. channel bandwidth;

It is used to determine uplink target data according to the second channel bandwidth indication information, where the target uplink data is all or part of the uplink data on the bearer;

It is used to control the transceiver 1140 to send the uplink target data to the WLAN AP, so that the WLAN AP sends the uplink target data to the base station via the GTP tunnel.

Optionally, the processor 1120 is specifically configured to control the transceiver 1140 to send channel switching information to the base station, where the channel switching information is used to indicate switching of a channel used for communication between the user equipment and the WLAN AP and to complete the communication. time to switch.

Optionally, the processor 1120 is specifically configured to control the transceiver 1140 to receive second offload instruction information sent by the base station, where the second offload instruction information is used to instruct the user equipment to transmit data between the WLAN AP.

It is used for controlling the transceiver 1140 to transmit target data with the base station via the WLAN AP according to the second offload instruction information.

Optionally, the device has a first user equipment side protocol stack and a second user equipment side protocol stack, the first user equipment side protocol stack is used to implement data processing for communication with the base station on the user equipment side, the The second user equipment side protocol stack is used to implement data processing for communication with the WLAN AP on the user equipment side, wherein the second user equipment side protocol stack is identical to at least one protocol layer of the first user equipment side protocol stack connected, and

Optionally, the processor 1120 is specifically configured to control the transceiver 1140 to exchange target data with the base station via the WLAN AP through at least one layer of the first user equipment side protocol stack and the second user equipment side protocol stack. transmission.

Optionally, the second user equipment side protocol stack includes an adaptation layer, and the adaptation layer is used to perform data transfer between at least one protocol layer of the first user equipment side protocol stack and the second user equipment side protocol stack. conversion processing between the second user equipment side protocol stack and at least one protocol layer of the first user equipment side protocol stack are connected through the adaptation layer; and

Optionally, the processor 1120 is specifically configured to control the transceiver 1140 to input the uplink target data to at least one protocol layer of the protocol stack on the first user equipment side, and transfer the protocol from the first user equipment side to the protocol layer through the adaptation layer. The data format of the data output by at least one protocol layer of the stack is converted into a data format recognizable by the second user equipment side protocol stack, and transmitted to the second user equipment side protocol stack, and the data format from the second user equipment side protocol stack The output data is sent to the WLAN AP to be sent to the base station via the WLAN AP, or

The processor 1120 is specifically configured to control the transceiver 1140 to input the data obtained from the WLAN AP to the second user equipment side protocol stack, and to output the data from the second user equipment side protocol stack through the adaptation layer The data format is converted into a data format recognizable by at least one protocol layer of the first user equipment side protocol stack, and transmitted to at least one protocol layer of the first user equipment side protocol stack to obtain downlink target data.

Optionally, the second user equipment side protocol stack includes a bearer mapping layer, where the bearer mapping layer is used to determine the bearer to which the target data belongs, and

When the user equipment corresponds to at least two bearers, the processor 1120 is specifically configured to control the transceiver 1140 to determine the bearer to which the uplink target data in the target data belongs through the bearer mapping layer, and map The layer generates second bearer indication information, where the second bearer indication information is used to indicate the bearer to which the uplink target data belongs, and sends the second bearer indication information to the WLAN AP, so that the base station forwards the WLAN AP according to the The second bearer indication information or the second uplink GTP tunnel corresponding to the bearer to which the uplink target data belongs determines the bearer to which the uplink target data belongs; or

The processor 1120 is specifically configured to control the transceiver 1140 to obtain the first bearer indication information sent by the WLAN AP through the bearer mapping layer, where the first bearer indication information is used to indicate the target data to which the downlink target data in the target data belongs. bearer, and determine the bearer to which the downlink target data belongs according to the first bearer indication information, the first bearer indication information is obtained by the WLAN AP from the base station, or the WLAN AP according to the bearer to which the downlink target data belongs The bearer is determined by the corresponding downlink second GTP tunnel.

Optionally, the first user equipment side protocol stack includes a reordering layer, the reordering layer is used to determine the position of the target data among all the data on the bearer, and at least one protocol of the first user equipment side protocol stack layer is the reordering layer, and

Optionally, the processor 1120 is specifically configured to use the reordering layer to determine the position of the uplink target data in the target data among all the uplink data on the bearer, and generate second position indication information through the reordering layer, The second position indication information is used to indicate the position of the uplink target data in all the uplink data on the bearer, and send the second position indication information to the WLAN AP, so that the base station forwards the second position according to the WLAN AP. position indication information, determining the position of the uplink target data in all uplink data on the bearer; or

The processor 1120 is specifically configured to obtain the first location indication information forwarded by the WLAN AP through the reordering layer, the first location indication information is used to indicate all downlink data of the downlink target data in the target data on the bearer and determine the position of the downlink target data in all the downlink data on the bearer according to the first position indication information, which is determined by the base station and sent to the WLAN AP.

The data transmission device 1100 according to the embodiment of the present invention may correspond to the user equipment (target user equipment) in the method of the embodiment of the present invention, and each unit in the data transmission device 1100 is a module and other operations and/or the above-mentioned or functions are respectively to realize the corresponding flow of the method 500 in FIG. 8 , and for the sake of brevity, details are not described here again.

According to the device for transmitting data according to the embodiment of the present invention, after the base station determines that the data of the UE needs to be offloaded through the WLAN AP, the data of the UE (including uplink data or downlink data) is transmitted between the GTP tunnel and the WLAN AP, so that the The offload anchor point is located at the base station, and the base station determines the channel bandwidth used for communication between the user equipment and the WLAN AP, so that the base station can determine the offload traffic according to the channel bandwidth, thereby improving the offload effect, and, because the data offloaded by the WLAN AP Reaching the gateway device via the base station can ensure that the gateway device used when establishing a communication connection through the WLAN is the same as the gateway device used when establishing a communication connection through the base station, thereby ensuring service continuity and improving user experience.

FIG. 15 is a schematic architecture diagram of a system 1200 for transmitting signals according to an embodiment of the present invention. As shown in Figure 15, the system 1200 includes:

Base station 1210, between the base station and the gateway device, there is a bearer for transmitting the data of the user equipment 1230, between the base station and the wireless local area network access point WLAN AP1220, there is a General Packet Radio Service Tunneling Protocol GTP tunnel, used to determine the The channel bandwidth used for communication between the user equipment 1230 and the WLAN AP 1220, and according to the channel bandwidth, the target data is transmitted between the WLAN AP 1220 and the user equipment 1230 via the GTP tunnel, wherein the target data is the bearer all or part of the data on

The WLAN AP 1220 is configured to transmit the target data of the user equipment 1230 with the base station 1210 via the GTP tunnel, wherein the target data is determined according to the channel bandwidth used for communication between the user equipment 1230 and the WLAN AP 1220, the The target data is all or part of the data on the bearer;

The user equipment 1230 is configured to transmit target data with the base station 1210 via the WLAN AP 1220, wherein the target data is determined according to the channel bandwidth used for communication between the user equipment 1230 and the WLAN AP 1220, and the target data The transmission between the WLAN AP 1220 and the base station 1210 is via the GTP tunnel, and the target data is all or part of the data on the bearer.

In the system 1200 for transmitting data according to the embodiment of the present invention, the base station 1210 may correspond to the base station in the method of the embodiment of the present invention, and each unit or module in the base station 1210 and the above-mentioned other operations and/or functions are for realizing For the sake of brevity, the corresponding flow of the method 100 in FIG. 4 will not be repeated here. The WLAN AP 1220 may correspond to the AP in the method of the embodiment of the present invention, and each unit in the WLAN AP 1220, that is, a module, and other operations and/or functions described above are respectively used to implement the corresponding flow of the method 400 in FIG. 7 , and for the sake of simplicity, I won't repeat them here. The user equipment 1230 may correspond to the user equipment (target user equipment) in the method of the embodiment of the present invention, and each unit in the base station, that is, a module, and the above-mentioned other operations and/or functions are to implement the method 500 in FIG. 8 For the sake of brevity, the corresponding process is not repeated here.

According to the data transmission system of the embodiment of the present invention, after the base station determines that the data of the UE needs to be offloaded through the WLAN AP, the data of the UE (including uplink data or downlink data) is transmitted between the GTP tunnel and the WLAN AP. The offload anchor point is located at the base station, and the base station determines the channel bandwidth used for communication between the user equipment and the WLAN AP, so that the base station can determine the offload traffic according to the channel bandwidth, thereby improving the offload effect, and, because the data offloaded by the WLAN AP Reaching the gateway device via the base station can ensure that the gateway device used when establishing a communication connection through the WLAN is the same as the gateway device used when establishing a communication connection through the base station, thereby ensuring service continuity and improving user experience.

It should be understood that the term "and/or" in this article is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and/or B may mean: A exists alone, and A and B exist at the same time , there are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

It should be understood that in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of each process should be determined by its functions and internal logic, rather than by the embodiment of the present invention. The implementation process constitutes any limitation.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. .

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (64)

1. a kind of method for transmitting data, which is characterized in that executed by the base station in communication system, the communication system further includes Wireless local network connecting point WLAN AP and user equipment, between the base station and gateway, equipped with being used for transmission the use The carrying of the data of family equipment is equipped with general packet wireless service tunnel protocol GTP tunnel between the base station and the WLAN AP Road, which comprises

Determine channel width used in communicating between the user equipment and the WLAN AP；

According to the channel width, via the GTP tunnel, number of targets is carried out by the WLAN AP and the user equipment According to transmission, wherein the target data is all or part of data in the carrying；

Channel width used in being communicated between the determination user equipment and the WLAN AP, comprising:

Receive the first channel width instruction information that the user equipment or the WLAN AP are sent, wherein first channel Bandwidth instruction information, which is used to indicate between the user equipment and the WLAN AP, communicates used channel width, the channel Bandwidth is determined after being negotiated by the user equipment and the WLAN AP；

Information is indicated according to first channel width, is determined to communicate between the user equipment and the WLAN AP and is used Channel width.

2. the method according to claim 1, wherein the determination user equipment and the WLAN AP it Between communicate used in channel width further include:

Receive the first ability letter for being used to indicate the channel width that the user equipment can be supported that the user equipment is sent Breath；

Receive the second ability information for being used to indicate the channel width that the WLAN AP can be supported that the WLAN AP is sent；

According to the first ability information and the second ability information, determine between the user equipment and the WLAN AP Channel width used in communicating.

3. according to the method described in claim 2, it is characterized in that, described according to the channel width, via the GTP tunnel Road carries out the transmission of target data by the WLAN AP and the user equipment, comprising:

Second channel bandwidth, which is sent, to the user equipment indicates that information, the second channel bandwidth instruction information are used to indicate institute Channel width used in communicating between user equipment and the WLAN AP is stated, in order to which the user equipment is according to described the Two channel widths indicate information, determine uplink target data, wherein the target upstream data be whole in the carrying or Part upstream data；

Via the GTP tunnel, the uplink target data that the WLAN AP is sent is received, the uplink target data is The user equipment is sent to the WLAN AP's.

4. according to the method in any one of claims 1 to 3, which is characterized in that it is described according to the channel width, via The GTP tunnel carries out the transmission of target data by the WLAN AP and the user equipment, comprising:

According to the channel width, down target data are determined, wherein the target downlink data are the wholes in the carrying Or part downlink data；

Via the GTP tunnel, the down target data are sent to the WLAN AP, in order to which the WLAN AP is to described User equipment forwards the down target data.

5. according to the method described in claim 4, it is characterized in that, the method also includes:

The channel switching information that the user equipment or the WLAN AP are sent is received, the channel switching information is used to indicate Channel used in communicating between the user equipment and the WLAN AP switches and completes the time of the switching； And

It is described that the WLAN AP and user equipment progress mesh are passed through via the GTP tunnel according to the channel width Mark the transmission of data, comprising:

According to the channel width and the channel indication message, via the GTP tunnel, by the WLAN AP with The user equipment carries out the transmission of target data.

6. according to the method described in claim 5, it is characterized in that, described according to the channel width, via the GTP tunnel Road, before the transmission that target data is carried out by the WLAN AP and the user equipment, the method also includes:

First is sent to the WLAN AP and shunts instruction information, and described first, which shunts instruction information, is used to indicate the WLAN AP Data are transmitted between the base station and the user equipment, described first shunts the body that instruction information includes the user equipment Part information a, wherein identity information in the communication system for uniquely indicating a user equipment.

7. method according to claim 4 or 5, which is characterized in that described according to the channel width, via described GTP tunnel, before the transmission that target data is carried out by the WLAN AP and the user equipment, the method also includes:

Second is sent to the user equipment and shunts instruction information, and described second, which shunts instruction information, is used to indicate in the user Data are transmitted between equipment and the WLAN AP.

8. the method according to the description of claim 7 is characterized in that described according to the channel width, via the GTP tunnel Road carries out the transmission of target data by the WLAN AP and the user equipment, comprising:

Determine the first GTP tunnel corresponding with the user equipment；

According to the channel width, via first GTP tunnel, mesh is carried out by the WLAN AP and the user equipment Mark the transmission of data.

9. according to the method described in claim 8, it is characterized in that, when the user equipment is corresponding at least two carryings When, it is described according to the channel width, via the GTP tunnel, target is carried out by the WLAN AP and the user equipment The transmission of data, comprising:

Determine the second GTP tunnel corresponding with carrying belonging to the target data；

According to the channel width, via second GTP tunnel, institute is carried out by the WLAN AP and the user equipment State the transmission of target data.

10. method according to claim 8 or claim 9, which is characterized in that the base station has first base station side protocol stack and the Two base station side protocol stacks, first base station side protocol stack are used in number base station side realization and communicated between the user equipment According to processing, the second base station side protocol stack is used in data processing base station side realization and communicated between the WLAN AP, In, the second base station side protocol stack is connected at least one protocol layer of first base station side protocol stack, and

It is described that the WLAN AP and user equipment progress mesh are passed through via the GTP tunnel according to the channel width Mark the transmission of data, comprising:

According to the channel width, pass through at least one layer of first base station side protocol stack and the second base station side agreement Stack carries out the transmission of target data by the WLAN AP and the user equipment via the GTP tunnel.

11. according to the method described in claim 10, it is characterized in that, the second base station side protocol stack includes adaptation layer, institute Adaptation layer is stated for assist in an at least protocol layer for first base station side protocol stack and second base station side to data The conversion process between stack is discussed, an at least protocol layer for the second base station side protocol stack and first base station side protocol stack is logical The adaptation layer is crossed to be connected, and

At least one layer and second base station side for according to the channel width, passing through first base station side protocol stack is assisted Stack is discussed, via the GTP tunnel, the transmission of target data is carried out by the WLAN AP and the user equipment, comprising:

The down target data determined according to the channel width are input to at least one association of first base station side protocol stack Layer is discussed, by the adaptation layer by the data format of the data exported from an at least protocol layer for first base station side protocol stack The data format that the second base station side protocol stack can identify is converted to, and is transmitted to the second base station side protocol stack, it will The data exported from the second base station side protocol stack are sent to the WLAN AP via the GTP tunnel, by described WLAN AP is sent to the user equipment；Or

It will be input to the second base station side protocol stack from the data that the WLAN AP is obtained via the GTP tunnel, passes through institute It is first base station side agreement that adaptation layer, which is stated, by the Data Format Transform of the data exported from the second base station side protocol stack The data format that an at least protocol layer for stack can identify, and it is transmitted to an at least agreement for first base station side protocol stack Layer, to obtain the uplink target data of the user equipment, the uplink target data is the user equipment according to the letter What road bandwidth determined.

12. method described in 0 or 11 according to claim 1, which is characterized in that the second base station side protocol stack includes that carrying is reflected Layer is penetrated, the carrying mapping layer is used to determine carrying belonging to the target data, and

It is described according to the channel width when the user equipment is corresponding at least two carryings, via the GTP tunnel Road carries out the transmission of target data by the WLAN AP and the user equipment, comprising:

According to the channel width, down target data are determined；

By the carrying mapping layer, carrying belonging to the down target data is determined, and pass through the carrying mapping layer The first carrying instruction information is generated, the first carrying instruction information, which is used to indicate belonging to the down target data, holds It carries；

The first carrying instruction information is sent to the WLAN AP, in order to which the user equipment turns according to the WLAN AP First carrying instruction information of hair, determines carrying belonging to the down target data.

13. method described in 0 or 11 according to claim 1, which is characterized in that the second base station side protocol stack includes that carrying is reflected Layer is penetrated, the carrying mapping layer is used to determine carrying belonging to the target data, and

It is described according to the channel width when the user equipment is corresponding at least two carryings, via the GTP tunnel Road carries out the transmission of target data by the WLAN AP and the user equipment, comprising:

By the carrying mapping layer, the second carrying instruction information of the WLAN AP forwarding, the second carrying instruction are obtained Information is used to indicate carrying belonging to uplink target data, and the uplink target data is determined according to the channel width 's；

According to the second carrying instruction information, determine that carrying belonging to the uplink target data, second carrying refer to Show that information is the user equipment determination and is sent to the WLAN AP.

14. according to the method for claim 13, which is characterized in that first base station side protocol stack includes the layer that reorders, The layer that reorders is for determining position of the target data in the total data in the carrying, the first base station side At least one protocol layer of protocol stack is the layer that reorders, and

It is described that the WLAN AP and user equipment progress mesh are passed through via the GTP tunnel according to the channel width Mark the transmission of data, comprising:

According to the channel width, down target data are determined；

By the layer that reorders, position of the down target data in whole downlink datas in the carrying is determined, And first position is generated by the layer that reorders and indicates that information, the first position instruction information are used to indicate the downlink mesh Mark position of the data in whole downlink datas in the carrying；

The first position is sent to the WLAN AP and indicates information, in order to which the user equipment turns according to the WLAN AP The first position of hair indicates information, determines position of the down target data in whole downlink datas in the carrying.

15. according to the method for claim 14, which is characterized in that first base station side protocol stack includes the layer that reorders, The layer that reorders is for determining position of the target data in the total data in the carrying, the first base station side At least one protocol layer of protocol stack is the layer that reorders, and

It is described that the WLAN AP and user equipment progress mesh are passed through via the GTP tunnel according to the channel width Mark the transmission of data, comprising:

By the layer that reorders, the second position instruction information of the WLAN AP forwarding, the second position instruction letter are obtained Breath is used to indicate position of the uplink target data in whole upstream datas in the carrying, and the uplink target data is root It is determined according to the channel width；

Information is indicated according to the second position, determines the uplink target data in whole upstream datas in the carrying Position, second position instruction information is that the user equipment is determining and be sent to the WLAN AP.

16. a kind of method for transmitting data, which is characterized in that held by the wireless local network connecting point WLAN AP in communication system Row, the communication system further includes base station and user equipment, described equipped with being used for transmission between the base station and gateway The carrying of the data of user equipment is equipped with general packet wireless service tunnel protocol GTP between the base station and the WLAN AP Tunnel, which comprises

Via the GTP tunnel, the target data of the user equipment is transmitted with the base station, wherein the target data is According to communicating what used channel width determined between the user equipment and the WLAN AP, the target data is institute State all or part of data in carrying；Via the GTP tunnel, the number of targets of the user equipment is transmitted with the base station According to before, the method also includes:

Receive the first ability letter for being used to indicate the channel width that the user equipment can be supported that the user equipment is sent Breath；

According to the WLAN AP channel width that can be supported and the first ability information, it is determining with the user equipment it Between the used channel width of communication；

The first channel width is sent to the base station and indicates information, wherein the first channel width instruction information is used to indicate Channel width used in being communicated between the user equipment and the WLAN AP.

17. according to the method for claim 16, which is characterized in that via the GTP tunnel, transmit institute with the base station Before the target data for stating user equipment, the method also includes:

The second ability information for being used to indicate the channel width that the WLAN AP can be supported is sent to the base station, in order to The base station determines between the user equipment and the WLAN AP according to the first ability information and the second ability information Channel width used in communicating, wherein the first ability instruction information is that the user is sent to the base station, is used for Indicate the channel width that the user equipment can be supported.

18. method according to claim 16 or 17, which is characterized in that the method also includes:

Channel switching information is sent to the base station, the channel switching information is used to indicate the user equipment and the WLAN Channel used in communicating between AP switches and completes the time of the switching.

19. according to the method for claim 18, which is characterized in that it is described via the GTP tunnel, it is transmitted with the base station The target data of the user equipment, comprising:

It receives the base station is sent first and shunts instruction information, described first, which shunts instruction information, is used to indicate the WLAN AP transmits data between the base station and the user equipment, and the first shunting instruction information includes the user equipment Identity information a, wherein identity information in the communication system for uniquely indicating a user equipment

Instruction information is shunted according to described first, and the target of the user equipment is transmitted with the base station via the GTP tunnel Data.

20. according to the method for claim 19, which is characterized in that it is described via the GTP tunnel, it is transmitted with the base station The target data of the user equipment, comprising:

According to the user information of the user equipment, the first GTP tunnel corresponding with the user equipment is determined；

Via first GTP tunnel, the target data of the user equipment is transmitted with the base station.

21. method described in 9 or 20 according to claim 1, which is characterized in that when the user equipment and at least two carrying phases Via the GTP tunnel described in when corresponding to, the target data of the user equipment is transmitted with the base station, comprising:

The first carrying instruction information that the base station is sent is received, and carries instruction letter to user equipment forwarding described first Breath, the first carrying instruction information are used to indicate carrying belonging to down target data；Or

The second carrying instruction information that the user equipment is sent is received, and carries instruction letter to base station forwarding described second Breath, the second carrying instruction information are used to indicate carrying belonging to uplink target data.

22. according to the method for claim 21, which is characterized in that the WLAN AP has the first side WLAN AP protocol stack With the 2nd side WLAN AP protocol stack, the first WLAN AP side protocol stack is used to realize and the base in the side the WLAN AP The data processing communicated between standing, the 2nd WLAN AP side protocol stack are used to realize and the user in the side the WLAN AP The data processing of communication between devices, and

It is described via the GTP tunnel, the target data of the user equipment is transmitted with the base station, comprising:

The data obtained from the base station are input to the first side WLAN AP protocol stack, it will be from the side the first WLAN AP agreement The data of stack output are transmitted to the side the 2nd WLAN AP protocol stack, the number that will be exported from the 2nd WLAN AP side protocol stack According to being sent to the user equipment；Or

The data obtained from the user equipment are input to the 2nd side WLAN AP protocol stack, it will be from the side the 2nd WLAN AP The data of protocol stack output are transmitted to the side the first WLAN AP protocol stack, will export from the first WLAN AP side protocol stack Data be sent to the base station.

23. according to the method for claim 22, which is characterized in that in the first WLAN AP side protocol stack and described the Adaptation layer is provided between two side WLAN AP protocol stacks, and the adaptation layer is used to that data to be carried out in the side the first WLAN AP The conversion process between the protocol stack of the side the 2nd WLAN AP of protocol stack；And

It is described via the GTP tunnel, the target data of the user equipment is transmitted with the base station, comprising:

The data obtained from the base station are input to the first side WLAN AP protocol stack, it will be from described by the adaptation layer The side Data Format Transform the 2nd WLAN AP protocol stack of the data of one WLAN AP side protocol stack output can identify Data format, and it is transmitted to the side the 2nd WLAN AP protocol stack, the number that will be exported from the 2nd WLAN AP side protocol stack According to being sent to the user equipment；Or

The data obtained from the user equipment are input to the 2nd side WLAN AP protocol stack, it will be from institute by the adaptation layer The Data Format Transform for stating the data of the 2nd WLAN AP side protocol stack output is that the side the first WLAN AP protocol stack can be known Other data format, and it is transmitted to the side the first WLAN AP protocol stack, it will be exported from the first WLAN AP side protocol stack Data be sent to the base station.

24. the method according to claim 22 or 23, which is characterized in that when the user equipment and at least two carrying phases Via the GTP tunnel described in when corresponding to, the target data of the user equipment is transmitted with the base station, comprising:

According to the identity information of the user equipment, twoth GTP corresponding with carrying belonging to the target data is determined Tunnel；

Via second GTP tunnel, the target data of the user equipment is transmitted with the base station.

25. a kind of method for transmitting data, which is characterized in that executed by the user equipment in communication system, the communication system It further include base station and wireless local network connecting point WLAN AP, it is described equipped with being used for transmission between the base station and gateway The carrying of the data of user equipment is equipped with general packet wireless service tunnel protocol GTP between the base station and the WLAN AP Tunnel, which comprises

Via the WLAN AP, the transmission of target data is carried out with the base station, wherein the target data is according to What channel width used in communicating between user equipment and the WLAN AP determined, the target data is in the WLAN AP It is to be transmitted via the GTP tunnel between the base station, the target data is all or part of number in the carrying According to；Via the WLAN AP, before the transmission that target data is carried out with the base station, the method also includes:

Receive the second ability information for being used to indicate the channel width that the WLAN AP can be supported that the WLAN AP is sent；

The channel width and the second ability information that can be supported according to the user equipment, it is determining with the WLAN AP it Between the used channel width of communication；

The first channel width is sent to the base station and indicates information, wherein the first channel width instruction information is used to indicate Channel width used in being communicated between the user equipment and the WLAN AP.

26. according to the method for claim 25, which is characterized in that via the WLAN AP, carry out mesh with the base station Before the transmission for marking data, the method also includes:

The first ability information for being used to indicate the channel width that the user equipment can be supported is sent to the base station, in order to The base station determines between the user equipment and the WLAN AP according to the first ability information and the second ability information Channel width used in communicating, wherein the second ability instruction information is that the WLAN AP is sent to the base station, It is used to indicate the channel width that the WLAN AP can be supported.

27. according to the method for claim 26, which is characterized in that it is described via the WLAN AP, it is carried out with the base station The transmission of target data, comprising:

The second channel bandwidth instruction information that the base station is sent is received, the second channel bandwidth instruction information is used to indicate institute State channel width used in communicating between user equipment and the WLAN AP；

Information is indicated according to the second channel bandwidth, determines uplink target data, wherein the target upstream data is described All or part of upstream data in carrying；

The uplink target data is sent to the WLAN AP, in order to which the WLAN AP will be described via the GTP tunnel Uplink target data is sent to the base station.

28. the method according to any one of claim 25 to 27, which is characterized in that the method also includes:

Channel switching information is sent to the base station, the channel switching information is used to indicate the user equipment and the WLAN Channel used in communicating between AP switches and completes the time of the switching.

29. according to the method for claim 28, which is characterized in that it is described via the WLAN AP, it is carried out with the base station The transmission of target data, comprising:

It receives the base station is sent second and shunts instruction information, the second shunting instruction information is used to indicate the user and sets It is standby to transmit data between the WLAN AP；

Instruction information is shunted according to described second, via the WLAN AP, the transmission of target data is carried out with the base station.

30. according to the method for claim 29, which is characterized in that the user equipment has the first user equipment side agreement Stack and second user equipment side protocol stack, the first user equipment side protocol stack is used to realize in the user equipment side and institute The data processing communicated between base station is stated, second user equipment side protocol stack is used to realize in the user equipment side and institute State the data processing communicated between WLAN AP, wherein second user equipment side protocol stack and first user equipment side At least one protocol layer of protocol stack is connected, and

The transmission via the WLAN AP, with base station progress target data, comprising:

By at least one layer and second user equipment side protocol stack of the first user equipment side protocol stack, via described WLAN AP carries out the transmission of target data with the base station.

31. according to the method for claim 30, which is characterized in that second user equipment side protocol stack includes adaptation Layer, the adaptation layer are used to carry out data at least protocol layer and described second in the first user equipment side protocol stack Conversion process between user equipment side protocol stack, second user equipment side protocol stack and first user equipment side are assisted At least protocol layer for discussing stack is connected by the adaptation layer；And

At least one layer and second user equipment side protocol stack by the first user equipment side protocol stack, via The WLAN AP carries out the transmission of target data with the base station, comprising:

Uplink target data is input to an at least protocol layer for the first user equipment side protocol stack, passes through the adaptation layer It is described second by the Data Format Transform of the data exported from an at least protocol layer for the first user equipment side protocol stack The data format that user equipment side protocol stack can identify, and be transmitted to second user equipment side protocol stack, will be from described The data of second user equipment side protocol stack output are sent to the WLAN AP, to be sent to the base by the WLAN AP It stands, or

The data obtained from the WLAN AP are input to second user equipment side protocol stack, it will by the adaptation layer The Data Format Transform of the data exported from second user equipment side protocol stack is the first user equipment side protocol stack The data format that can identify of an at least protocol layer, and be transmitted to an at least agreement for the first user equipment side protocol stack Layer, to obtain down target data.

32. the method according to claim 30 or 31, which is characterized in that second user equipment side protocol stack includes holding Mapping layer is carried, the carrying mapping layer is used to determine carrying belonging to the target data, and

It is described via the WLAN AP when the user equipment is corresponding at least two carryings, mesh is carried out with the base station Mark the transmission of data, comprising:

By the carrying mapping layer, carrying belonging to the uplink target data in the target data is determined, and pass through institute It states carrying mapping layer and generates the second carrying instruction information, the second carrying instruction information is used to indicate the uplink target data Belonging carrying, and the second carrying instruction information is sent to the WLAN AP, in order to which the base station is according to The second carrying instruction information of WLAN AP forwarding or uplink corresponding with carrying belonging to the uplink target data Second GTP tunnel determines carrying belonging to the uplink target data；Or

By the carrying mapping layer, the first carrying instruction information that the WLAN AP is sent, the first carrying instruction are obtained Information is used to indicate carrying belonging to the down target data in the target data, and according to the first carrying instruction letter Breath, determines carrying belonging to the down target data, and the first carrying instruction information is the WLAN AP from the base The WLAN AP obtain or described stand according to the 2nd GTP tunnel of downlink corresponding with carrying belonging to the down target data What road determined.

33. according to the method for claim 32, which is characterized in that the first user equipment side protocol stack includes reordering Layer, for determining position of the target data in the total data in the carrying, described first uses the layer that reorders At least one protocol layer of family equipment side protocol stack is the layer that reorders, and

The transmission via the WLAN AP, with base station progress target data, comprising:

By the layer that reorders, determine the uplink target data in target data in whole upstream datas in the carrying Position, and the second position is generated by the layer that reorders and indicates that information, the second position instruction information are used to indicate institute Position of the uplink target data in whole upstream datas in the carrying is stated, and sends described second to the WLAN AP Position indication information determines the uplink in order to which the base station indicates information according to the second position that the WLAN AP is forwarded Position of the target data in whole upstream datas in the carrying；Or

By the layer that reorders, the first position instruction information of the WLAN AP forwarding, the first position instruction letter are obtained Cease position of the down target data being used to indicate in the target data in whole downlink datas in the carrying, and root Information is indicated according to the first position, determines position of the down target data in whole downlink datas in the carrying It sets, the first position instruction information is the base station determination and is sent to the WLAN AP.

34. a kind of device for transmitting data, which is characterized in that between described device and gateway, equipped with being used for transmission use The carrying of the data of family equipment is equipped with General Packet Radio Service between described device and wireless local network connecting point WLAN AP Tunnel protocol GTP tunnel, described device include:

First base station side protocol stack, for realizing the data processing communicated between the user equipment；

Second base station side protocol stack, for realizing the data processing communicated between the WLAN AP, wherein second base Side protocol stack of standing is connected at least one protocol layer of first base station side protocol stack；

Determination unit communicates used channel width for determining between the user equipment and the WLAN AP；

Transmit-Receive Unit is connected with the second base station side protocol stack, the channel strip for being determined according to the determination unit Width carries out the transmission of target data by the WLAN AP and the user equipment, wherein described via the GTP tunnel Target data is all or part of data in the carrying；The Transmit-Receive Unit is also used to receive the user equipment or described The first channel width that WLAN AP is sent indicates information, wherein the first channel width instruction information is used to indicate the use Communicate used channel width between family equipment and the WLAN AP, the channel width be by the user equipment with it is described What WLAN AP was determined after negotiating；

The determination unit be specifically used for according to first channel width indicate information, determine the user equipment with it is described Channel width used in being communicated between WLAN AP.

35. device according to claim 34, which is characterized in that the Transmit-Receive Unit is also used to receive the user equipment The first ability information for being used to indicate the channel width that the user equipment can be supported sent, and receive the WLAN AP The second ability information for being used to indicate the channel width that the WLAN AP can be supported sent；

The determination unit is specifically used for determining that the user sets according to the first ability information and the second ability information It is standby that used channel width is communicated between the WLAN AP.

36. device according to claim 35, which is characterized in that the Transmit-Receive Unit is also used to send out to the user equipment Second channel bandwidth is sent to indicate that information, the second channel bandwidth instruction information are used to indicate the user equipment and the WLAN Channel width used in being communicated between AP, in order to which the user equipment indicates information according to the second channel bandwidth, really Determine uplink target data, wherein the target upstream data is all or part of upstream data in the carrying；

The Transmit-Receive Unit is specifically used for receiving the uplink number of targets that the WLAN AP is sent via the GTP tunnel According to the uplink target data is that the user equipment is sent to the WLAN AP.

37. the device according to any one of claim 34 to 36, which is characterized in that the determination unit is also used to basis The channel width determines down target data, wherein the target downlink data are under all or part in the carrying Row data；

The Transmit-Receive Unit is specifically used for via the GTP tunnel, sends the down target data to the WLAN AP, with The down target data are forwarded to the user equipment convenient for the WLAN AP.

38. the device according to claim 37, which is characterized in that the Transmit-Receive Unit is also used to receive the user equipment Or the channel switching information that the WLAN AP is sent, the channel switching information be used to indicate the user equipment with it is described Channel used in communicating between WLAN AP switches and completes the time of the switching；

The Transmit-Receive Unit is specifically used for according to the channel width and the channel indication message, via the GTP tunnel Road carries out the transmission of target data by the WLAN AP and the user equipment.

39. the device according to claim 38, which is characterized in that the Transmit-Receive Unit is also used to send out to the WLAN AP The first shunting is sent to indicate information, described first, which shunts instruction information, is used to indicate the WLAN AP in the base station and the use Data are transmitted between the equipment of family, described first shunts the identity information that instruction information includes the user equipment, wherein a body Part information in the communication system for uniquely indicating a user equipment.

40. the device according to claim 37 or 38, which is characterized in that the Transmit-Receive Unit is also set with to the user Preparation send the second shunting to indicate information, and described second, which shunts instruction information, is used to indicate in the user equipment and the WLAN Data are transmitted between AP.

41. device according to claim 40, which is characterized in that the determination unit is also set with determining with the user Standby corresponding first GTP tunnel；

The Transmit-Receive Unit is specifically used for passing through the WLAN AP via first GTP tunnel according to the channel width The transmission of target data is carried out with the user equipment.

42. device according to claim 41, which is characterized in that when the user equipment is corresponding at least two carryings When, the determination unit is also used to determine the second GTP tunnel corresponding with carrying belonging to the target data；

The Transmit-Receive Unit is specifically used for passing through the WLAN AP via second GTP tunnel according to the channel width The transmission of the target data is carried out with the user equipment.

43. the device according to claim 41 or 42, which is characterized in that the second base station side protocol stack includes adaptation Layer, the adaptation layer are used to carry out data at least protocol layer and second base station in first base station side protocol stack Conversion process between the protocol stack of side, an at least agreement for the second base station side protocol stack and first base station side protocol stack Layer is connected by the adaptation layer.

44. device according to claim 43, which is characterized in that the second base station side protocol stack includes carrying mapping Layer, the carrying mapping layer is used to determine carrying belonging to the target data, and

When the user equipment is corresponding at least two carryings, the determination unit is specifically used for according to the channel strip Width determines down target data, and by the carrying mapping layer, determines carrying belonging to the down target data, and The first carrying instruction information is generated by the carrying mapping layer, the first carrying instruction information is used to indicate the downlink mesh Mark carrying belonging to data；

The Transmit-Receive Unit is also used to send the first carrying instruction information to the WLAN AP, in order to which the user sets Standby the first carrying instruction information according to WLAN AP forwarding, determines carrying belonging to the down target data.

45. the device according to claim 43 or 44, the second base station side protocol stack includes carrying mapping layer, described to hold Mapping layer is carried to be used to determine carrying belonging to the target data, and

When the user equipment is corresponding at least two carryings, the determination unit is specifically used for mapping by the carrying Layer, obtains the second carrying instruction information of the WLAN AP forwarding, and the second carrying instruction information is used to indicate uplink target Carrying belonging to data, the uplink target data are determined according to the channel width；

For determining carrying belonging to the uplink target data, described second holds according to the second carrying instruction information Carrying instruction information is the user equipment determination and is sent to the WLAN AP.

46. device according to claim 45, which is characterized in that first base station side protocol stack includes the layer that reorders, The layer that reorders is for determining position of the target data in the total data in the carrying, the first base station side At least one protocol layer of protocol stack is the layer that reorders, and

The determination unit is also used to determine down target data, and by the layer that reorders, really according to the channel width Fixed position of the down target data in whole downlink datas in the carrying, and the is generated by the layer that reorders One position indication information, the first position instruction information are used to indicate whole of the down target data in the carrying Position in downlink data；

The Transmit-Receive Unit is also used to send the first position instruction information to the WLAN AP, in order to which the user sets The standby first position according to WLAN AP forwarding indicates information, determines that the down target data are complete in the carrying Position in portion's downlink data.

47. device according to claim 46, which is characterized in that first base station side protocol stack includes the layer that reorders, The layer that reorders is for determining position of the target data in the total data in the carrying, the first base station side At least one protocol layer of protocol stack is the layer that reorders, and

The determination unit is also used to obtain the second position instruction information of the WLAN AP forwarding by the layer that reorders, The second position instruction information is used to indicate position of the uplink target data in whole upstream datas in the carrying, institute Stating uplink target data is determined according to the channel width；

For indicating information according to the second position, uplink target data line number in the whole in the carrying is determined Position in, the second position instruction information are the user equipment determinations and are sent to the WLAN AP.

48. a kind of device for transmitting data, which is characterized in that be equipped with General Packet Radio Service tunnel between described device and base station Road agreement GTP tunnel, between the base station and gateway, the carrying equipped with the data for being used for transmission user equipment is described Device includes:

First side WLAN AP protocol stack, for realizing the data processing communicated between the base station；

2nd side WLAN AP protocol stack is connected with the side the first WLAN AP protocol stack, for realizing with the user equipment Between the data processing that communicates；

Transmit-Receive Unit is connected with the first WLAN AP side protocol stack and the side the 2nd WLAN AP protocol stack, for via The GTP tunnel transmits the target data of the user equipment with the base station, wherein the target data is according to What channel width used in communicating between user equipment and the WLAN AP determined, the target data is in the carrying All or part of data；The Transmit-Receive Unit is also used to receive that the user equipment sends is used to indicate the user equipment The first ability information for the channel width that can be supported；

Described device further include:

Determination unit, channel width and the first ability information for that can be supported according to the WLAN AP, determining and institute It states and communicates used channel width between user equipment；And

The Transmit-Receive Unit is also used to send the first channel width instruction information to the base station, wherein first channel strip Width instruction information, which is used to indicate between the user equipment and the WLAN AP, communicates used channel width.

49. device according to claim 48, which is characterized in that the Transmit-Receive Unit is also used to send to the base station and use In the second ability information for the channel width that the instruction WLAN AP can be supported, in order to which the base station is according to the first ability Information and the second ability information determine channel width used in communicating between the user equipment and the WLAN AP, Wherein, the first ability instruction information is that the user is sent to the base station, and being used to indicate the user equipment can The channel width of support.

50. the device according to claim 48 or 49, which is characterized in that the Transmit-Receive Unit is also used to send out to the base station Channels handover information, the channel switching information, which is used to indicate to communicate between the user equipment and the WLAN AP, to be made Channel switches and completes the time of the switching.

51. device according to claim 50, which is characterized in that the Transmit-Receive Unit is also used to receive the base station and sends First shunt instruction information, it is described first shunt instruction information is used to indicate the WLAN AP in the base station and the use Data are transmitted between the equipment of family, described first shunts the identity information that instruction information includes the user equipment, wherein a body Part information in the communication system for uniquely indicating a user equipment；

The user equipment is transmitted with the base station via the GTP tunnel for shunting instruction information according to described first Target data.

52. device according to claim 51, which is characterized in that described device further include: determination unit is used for according to institute The user information of user equipment is stated, determines the first GTP tunnel corresponding with the user equipment；

The Transmit-Receive Unit is specifically used for transmitting the target of the user equipment with the base station via first GTP tunnel Data.

53. the device according to claim 50 or 51, which is characterized in that when the user equipment and at least two carrying phases It is corresponding when the Transmit-Receive Unit be also used to receive the first carrying instruction information that the base station sends, and to the user equipment The first carrying instruction information is forwarded, the first carrying instruction information, which is used to indicate belonging to down target data, holds It carries；Or

The Transmit-Receive Unit is also used to receive the second carrying instruction information that the user equipment is sent, and forwards to the base station The second carrying instruction information, the second carrying instruction information are used to indicate carrying belonging to uplink target data.

54. device according to claim 53, which is characterized in that in the first WLAN AP side protocol stack and described the Adaptation layer is provided between two side WLAN AP protocol stacks, and the adaptation layer is used to that data to be carried out in the side the first WLAN AP The conversion process between the protocol stack of the side the 2nd WLAN AP of protocol stack.

55. device according to claim 54, which is characterized in that when the user equipment is corresponding at least two carryings When, described device further include:

Determination unit, for the identity information according to the user equipment, determination and carrying phase belonging to the target data Corresponding second GTP tunnel；

The Transmit-Receive Unit is specifically used for transmitting the target of the user equipment with the base station via second GTP tunnel Data.

56. a kind of device for transmitting data, which is characterized in that described device includes:

First user equipment side protocol stack, for realizing the data processing communicated between base station, wherein in the base station and net It closes between equipment, the carrying equipped with the data for being used for transmission the user equipment, the base station and wireless local network connecting point General packet wireless service tunnel protocol GTP tunnel is equipped between WLAN AP；

Second user equipment side protocol stack, for realizing the data processing communicated between the WLAN AP, wherein described Two user equipment side protocol stacks are connected at least one protocol layer of the first user equipment side protocol stack；

Transmit-Receive Unit is connected with second user equipment side protocol stack, for via the WLAN AP, with the base station into The transmission of row target data, wherein the target data is made according to communicating between the user equipment and the WLAN AP What channel width determined, the target data is to pass between the WLAN AP and the base station via the GTP tunnel Defeated, the target data is all or part of data in the carrying；The Transmit-Receive Unit is also used to receive the WLAN The second ability information for being used to indicate the channel width that the WLAN AP can be supported that AP is sent；

Described device further include:

Determination unit, channel width and the second ability information for that can be supported according to the user equipment, determine with Used channel width is communicated between the WLAN AP；

The Transmit-Receive Unit is also used to send the first channel width instruction information to the base station, wherein first channel strip Width instruction information, which is used to indicate between the user equipment and the WLAN AP, communicates used channel width.

57. device according to claim 56, which is characterized in that the Transmit-Receive Unit is also used to send to the base station and use In the first ability information for the channel width that the instruction user equipment can be supported, in order to which the base station is according to described first Ability information and the second ability information determine channel width used in communicating between the user equipment and the WLAN AP, Wherein, the second ability instruction information is that the WLAN AP is sent to the base station, is used to indicate the WLAN AP energy The channel width enough supported.

58. device according to claim 57, which is characterized in that the Transmit-Receive Unit is also used to receive the base station and sends Second channel bandwidth indicate that information, second channel bandwidth instruction information are used to indicate the user equipment and the WLAN Channel width used in being communicated between AP；

Described device further include:

Determination unit determines uplink target data, wherein the target for indicating information according to the second channel bandwidth Upstream data is all or part of upstream data in the carrying；

The Transmit-Receive Unit is specifically used for sending the uplink target data to the WLAN AP, in order to WLAN AP warp The uplink target data is sent to the base station by the GTP tunnel.

59. the device according to any one of claim 56 to 58, which is characterized in that the Transmit-Receive Unit is also used to institute It states base station and sends channel switching information, the channel switching information is used to indicate between the user equipment and the WLAN AP Channel used in communicating switches and completes the time of the switching.

60. device according to claim 59, which is characterized in that the Transmit-Receive Unit is also used to receive the base station and sends Second shunt instruction information, it is described second shunt instruction information is used to indicate between the user equipment and the WLAN AP Transmit data；

For shunting instruction information according to described second, determines and need to carry out data biography via the WLAN AP and the base station It is defeated.

61. device according to claim 60, which is characterized in that second user equipment side protocol stack includes adaptation Layer, the adaptation layer are used to carry out data at least protocol layer and described second in the first user equipment side protocol stack Conversion process between user equipment side protocol stack, second user equipment side protocol stack and first user equipment side are assisted At least protocol layer for discussing stack is connected by the adaptation layer.

62. the device according to claim 60 or 61, which is characterized in that second user equipment side protocol stack includes holding Mapping layer is carried, the carrying mapping layer is used to determine carrying belonging to the target data, and

When the user equipment is corresponding at least two carryings,

The Transmit-Receive Unit is also used to determine by the carrying mapping layer belonging to the uplink target data in the target data In carrying, and the second carrying instruction information is generated by the carrying mapping layer, the second carrying instruction information is for referring to Show carrying belonging to the uplink target data, and sends the second carrying instruction information to the WLAN AP, in order to The base station according to the WLAN AP forward it is described second carrying instruction information or with belonging to the uplink target data Corresponding the second GTP tunnel of uplink is carried, determines carrying belonging to the uplink target data；Or

The Transmit-Receive Unit is also used to obtain the first carrying instruction letter that the WLAN AP is sent by the carrying mapping layer Breath, the first carrying instruction information are used to indicate carrying belonging to the down target data in the target data, and root According to the first carrying instruction information, carrying belonging to the down target data, the first carrying instruction information are determined Be the WLAN AP obtained from the base station or the WLAN AP according to carrying belonging to the down target data What corresponding the second GTP tunnel of downlink determined.

63. device according to claim 62, which is characterized in that the first user equipment side protocol stack includes reordering Layer, for determining position of the target data in the total data in the carrying, described first uses the layer that reorders At least one protocol layer of family equipment side protocol stack is the layer that reorders, and

The Transmit-Receive Unit is also used to determine the uplink target data in target data in the carrying by the layer that reorders On whole upstream datas in position, and the second position is generated by the layer that reorders and indicates information, the second position Instruction information is used to indicate position of the uplink target data in whole upstream datas in the carrying, and to described WLAN AP sends the second position and indicates information, in order to which the base station refers to according to the second position that the WLAN AP is forwarded Show information, determines position of the uplink target data in whole upstream datas in the carrying；Or

The Transmit-Receive Unit is also used to obtain the first position instruction information of the WLAN AP forwarding by the layer that reorders, The first position instruction information is used to indicate the down target data in the target data under the whole in the carrying Position in row data, and information is indicated according to the first position, determine the down target data in the carrying Position in whole downlink datas, the first position instruction information are the base station determinations and are sent to the WLAN AP.

64. a kind of system for transmitting data, which is characterized in that the system comprises:

Device described in any one of claim 34 to 47；

Device described in any one of claim 48 to 55；

Device described in any one of claim 56 to 63.