WO2014190521A1

WO2014190521A1 - User plane switchover method, base station, and user equipment

Info

Publication number: WO2014190521A1
Application number: PCT/CN2013/076477
Authority: WO
Inventors: 曹振臻; 熊新; 李明超
Original assignee: 华为技术有限公司
Priority date: 2013-05-30
Filing date: 2013-05-30
Publication date: 2014-12-04
Also published as: CN104471982A

Abstract

Disclosed are a user plane switchover method, base station, and user equipment (UE), relating to the technical field of communications. The method comprises: a macro base station, on the basis of a UE measurement report, determines switchover of the user plane connection of said UE from a currently accessed first station to a second station; the macro base station sends a de-activation command to the first station, the de-activation command containing at least the device identifier of the UE; the macro base station sends a data forwarding command to the first station; and the macro base station sends a first activation command to the UE, the first activation command containing at least the station identifier of the second station. Station information sets are pre-configured on the UE, such that when the UE frequently accesses stations covered by a macro base station, user plane switchover may be carried out by only activation signalling. Frequent configuration by a macro base station of small station information due to frequent UE access to such stations is thereby avoided, thus decreasing signaling overheads and delays caused by frequent configuration.

Description

User plane switching method, base station and user equipment

The present invention relates to the field of communications technologies, and in particular, to a user plane switching method, a base station, and a user equipment. Background technique

With the development of mobile communication technologies, large-scale deployment of 3G/4G networks, high-speed services are bringing people a colorful application experience. In particular, the recent large-scale growth of smartphones has brought new vigor to communications, but it has also brought more challenges to operators. In response to the rapid growth of mobile data traffic, operators have proposed a small station deployment scenario where users can serve small stations and enjoy high-speed data services.

The UE's control plane can be connected to cover the mobility management of the UE (User Equipment) with the small station (Small eNB or LPN (Low Power Node)). (ie RRC (Radio Resource Control) connection) is maintained at the macro station, and the user plane transmission remains at the small station. In this way, the UE can utilize both the wide bandwidth of the small station for data transmission and the complex mobility management problem when the UE moves between the small stations.

In places where there are many mobile users (such as shopping malls), small stations may be deployed at a high density in a small area. In such a scenario where the small station is densely deployed, due to frequent movement of the UE, handover may be frequently performed at the small station. The switching between the macro station and the small station of the existing UE is mainly caused by the UE feeding back the measurement result of the small station to the macro station; the macro station determines whether to switch the user plane of the UE to the small station according to the measurement of the UE; The macro station sends a shunt configuration request to the eNodeB, and sends a shunt reconfiguration message to the UE through RRC signaling. After the UE reconfiguration reconfiguration succeeds, the monitoring station PDCCH is started. Data transfer on the user side of the user station.

In the process of implementing the present invention, the inventors have found that at least the following problems exist in the prior art: Since the coverage radius of the small station is small, in a scenario where the small station is densely deployed, the UE may frequently enter and exit different small stations. At this time, the macro station needs to frequently configure the small station offload information for the UE through RRC signaling, which causes an increase in signaling overhead and an increase in the offload delay. Summary of the invention

In order to solve the problem of the prior art, an embodiment of the present invention provides a user plane switching method, a base station, and a user equipment. The technical solution is as follows:

In a first aspect, a user plane switching method is provided, where the method includes:

The macro base station determines, according to the measurement report of the UE, that the user plane connection of the UE is switched from the currently accessed first station to the second station;

The macro base station sends a deactivation command to the first station, where the deactivation instruction at least carries a device identifier of the UE;

The macro base station sends a data forwarding instruction to the first station, where the data forwarding instruction carries at least a site identifier of the second station and a device identifier of the UE;

The macro base station sends a first activation instruction to the UE, where the first activation instruction at least carries a site identifier of the second site, so that when the UE receives the first activation instruction, according to the site And identifying the site information of the second site from the pre-stored site information set, and accessing the second site according to the site information of the second site. With reference to the first aspect, in a first possible implementation manner of the first aspect, the macro base station determines, according to the measurement report of the UE, that the user plane connection of the UE is switched from the currently accessed first station to the small Before the second station of the station information set, the method further includes:

The macro base station configures a site information set to the user equipment UE, where the site information set includes site information to be offloaded within the coverage of the macro base station; or The macro base station configures the site information set and the second activation command to the UE, where the second activation command carries at least a site identifier of the first site, so that when the UE receives the second activation command, Obtaining the site information of the first site from the site information set according to the site identifier of the first site, and accessing the first site according to the site information of the first site. With reference to any one of the foregoing possible implementation manners of the first aspect, in a second possible implementation manner of the first aspect, the method further includes: the macro base station sending the UE to each site in the site information set Context information; or, the macro base station sends context information of the UE to the second station. With reference to any one of the foregoing possible implementation manners of the first aspect, in a third possible implementation manner of the first aspect, the method further includes:

When the macro base station determines that the UE leaves the coverage area of the macro base station, deleting context information of the UE on the macro base station, and sending a context deletion instruction to each station in the coverage area of the macro base station, The context deletion instruction carries the device identifier of the UE, so that the site that receives the context deletion instruction deletes the context information of the UE;

Or, when the macro base station determines that the UE leaves a coverage area of any station covered by the macro base station, sending a context deletion instruction to the any station, where the context deletion instruction carries the device identifier of the UE And causing the site that receives the context deletion instruction to delete the context information of the UE. With reference to any one of the foregoing possible implementation manners of the first aspect, in the fourth possible implementation manner of the first aspect, the first activation instruction and the deactivation instruction are physical layer signaling or media intervention control layer signaling or wireless Resource control layer signaling. In a second aspect, a user plane switching method is provided, where the method includes:

Receiving, by the UE, a first activation instruction sent by the macro base station, where the first activation instruction carries at least the second station Site ID of the point;

Obtaining, by the UE, site information of the second site from the pre-stored site information set according to the site identifier;

The UE accesses the second site according to site information of the second site. With reference to the second aspect, in a first possible implementation manner of the second aspect, before the UE receives the first activation command sent by the macro base station, the method further includes:

Receiving, by the UE, a site information set sent by the macro base station, where the site information set includes site information to be offloaded within a coverage of the macro base station; or

The UE receives the site information set and the second activation command, where the second activation command carries the site identifier of the first site, the dedicated PRACH resource, and the preamble information; the UE is configured according to the site identifier of the first site. Obtaining the site information of the first site in the site information set, and accessing the first site according to the site information of the first site. With reference to any of the foregoing possible implementation manners of the second aspect, in the second possible implementation manner of the second aspect, the first activation instruction is PHY/MAC/RRC layer signaling. In a third aspect, a base station is provided, the base station comprising: a transmitter, a receiver, a memory, and a processor respectively connected to the transmitter, the receiver, and the memory;

The processor is configured to, according to the measurement report of the UE, determine to switch the user plane connection of the UE from the currently accessed first station to the second station;

The transmitter is configured to send a deactivation instruction to the first station, where the deactivation instruction at least carries a device identifier of the UE;

The transmitter is further configured to send a data forwarding instruction to the first station, where the data forwarding instruction carries at least a site identifier of the second site and a device identifier of the UE;

The transmitter is further configured to send a first activation instruction to the UE, where the first activation instruction is Retrieving the site identifier of the second site, so that when receiving the first activation command, the UE acquires site information of the second site from the pre-stored site information set according to the site identifier, and according to The site information of the second site accesses the second site.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the transmitter is further configured to configure a site information set to the user equipment UE, where the site information set includes the to-be-divided in the coverage of the base station Site information; or,

The transmitter is further configured to configure the site information set and the second activation instruction to the UE, where the second activation instruction carries at least a site identifier of the first site, so that the UE receives the second When the command is activated, the site information of the first site is obtained from the site information set according to the site identifier of the first site, and the first site is accessed according to the site information of the first site. With reference to any of the foregoing possible implementation manners of the third aspect, in a second possible implementation manner of the third aspect, the transmitter is further configured to send the context of the UE to each site in the site information set. Or the transmitter is further configured to send the context information of the UE to the second station. With reference to any of the foregoing possible implementation manners of the third aspect, in a third possible implementation manner of the third aspect, the processor is further configured to: when the base station determines that the UE leaves a coverage area of the base station, Deleting the context information of the UE on the base station, and sending, by using the transmitter, a context deletion command to each station in the coverage area of the base station, where the context deletion command carries the device identifier of the UE, so that the The site of the context deletion instruction deletes context information of the UE;

Or the transmitter is further configured to: when the base station determines that the UE leaves a coverage area of any of the sites covered by the base station, send a context deletion instruction to the any site, where the context deletion command carries Determining the device identifier of the UE, so that the site that receives the context deletion instruction deletes the context information of the UE. With reference to any one of the foregoing possible implementation manners of the third aspect, in a fourth possible implementation manner of the third aspect, the first activation instruction and the deactivation instruction are physical layer signaling or media intervention control layer signaling or wireless Resource control layer signaling. A fourth aspect provides a user equipment, where the user equipment includes: a transmitter, a receiver, a memory, and a processor respectively connected to the transmitter, the receiver, and the memory;

The receiver is configured to receive a first activation command sent by the base station, where the first activation instruction at least carries a site identifier of the second site;

The processor is configured to obtain, according to the site identifier, site information of the second site from a pre-stored site information set;

The processor is further configured to access the second site according to site information of the second site. With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the receiver is further configured to receive a site information set sent by the base station, where the site information set includes the coverage of the base station Site information to be diverted; or,

The receiver is further configured to receive the configuration of the site information set and the second activation command, where the second activation command carries a site identifier of the first site, a dedicated PRACH resource, and preamble information; the processor is further configured to The site identifier of the first site acquires site information of the first site from the site information set, and accesses the first site according to site information of the first site.

With reference to any of the foregoing possible implementation manners of the fourth aspect, in a second possible implementation manner of the fourth aspect, the first activation instruction is PHY/MAC/RRC layer signaling.

The beneficial effects brought by the technical solutions provided by the embodiments of the present invention are:

By pre-configuring the set of site information on the user equipment, when the UE frequently accesses the site covered by the macro base station, the UE can perform the handover of the user plane connection only by activating the signaling, thereby avoiding frequent entry and exit of the UE by the UE. The resulting macro base station frequently configures the small station information, thereby reducing the signaling overhead and delay caused by frequent configuration. DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

1 is a flowchart of a user plane switching method according to an embodiment of the present invention;

2 is a flowchart of a user plane switching method according to an embodiment of the present invention;

3 is a schematic diagram of interaction of a user plane switching method according to an embodiment of the present invention;

4 is a schematic diagram of interaction of a user plane switching method according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. detailed description

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

FIG. 1 is a flowchart of a user plane switching method according to an embodiment of the present invention. The executor of the embodiment of the present invention is a macro base station, and the macro base station covers multiple sites (such as a small station or an LPN). Referring to FIG. 1, the method includes:

101. The macro base station determines, according to the measurement report of the UE, that the user plane connection of the UE is switched from the currently accessed first station to the second station.

102. The macro base station sends a deactivation command to the first station, where the deactivation instruction carries at least a device identifier of the UE.

103. The macro base station sends a data forwarding instruction to the first station, where the data forwarding instruction carries at least a site identifier of the second station and a device identifier of the UE.

104. The macro base station sends a first activation instruction to the UE, where the first activation instruction carries at least the The site identifier of the second site, when the UE receives the first activation command, obtains the site information of the second site from the pre-stored site information set according to the site identifier, and according to the site information of the second site Enter the second site.

The station may be an LPN in the LTE/UMTS technology, or may be a WiFi AP (Access Point).

The pre-stored site information set includes the air interface configuration information of the site, such as RB (Resource Block) configuration information, MAC (Medium Access Control) configuration information, and C-RNTI (Cell Radio Network Temporary Identifier). , cell wireless network temporary identification) and so on.

The method provided by the embodiment of the present invention, by pre-configuring the site information set on the user equipment, enables the UE to perform user plane connection switching only by activating signaling when the UE frequently accesses the site covered by the macro base station, thereby avoiding The macro base station frequently configures the small station information due to the frequent entry and exit of the UE into the small station, thereby reducing the signaling overhead and delay caused by frequent configuration. FIG. 2 is a flowchart of a user plane switching method according to an embodiment of the present invention. The executor of the embodiment of the present invention is a UE. Referring to FIG. 2, the method includes:

201. The UE receives a first activation command sent by the macro base station, where the first activation instruction carries at least a site identifier of the second site.

202. The UE acquires site information of the second site from the pre-stored site information set according to the site identifier.

203. The UE accesses the second site according to site information of the second site.

The method provided by the embodiment of the present invention, by pre-configuring the site information set on the user equipment, enables the UE to perform user plane connection switching only by activating signaling when the UE frequently accesses the site covered by the macro base station, thereby avoiding The macro base station frequently configures the small station information due to the frequent entry and exit of the UE into the small station, thereby reducing the signaling overhead and delay caused by frequent configuration. FIG. 3 is a schematic diagram of interaction of a user plane switching method according to an embodiment of the present invention. In the embodiment of the present invention, the UE enters the coverage area of the macro base station and moves between multiple sites in the coverage area of the macro base station as an example. Referring to FIG. 3, the embodiment specifically includes:

301. The UE sends an RRC connection setup request to the macro base station, where the RRC connection setup request carries the context information of the UE.

302. The macro base station, when receiving the RRC connection setup request, configures a site information set to the user equipment UE, where the site information set includes site information to be offloaded within the coverage of the macro base station, where the site information set may be configured by The technician configures the macro base station and adds or deletes site information according to specific settings.

Further, in the embodiment of the present invention, only the site information set is configured to the UE as an example, and in the actual scenario, for the UE that has configured the site information set, the macro base station may also establish an RRC connection process. Sending, by the UE, a command to delete the specified site information, where the command to delete the specified site information carries the site identifier of the designated site, so that the UE deletes the designated site from the configured site information set when receiving the instruction to delete the specified site information. Site information.

303. The macro base station establishes an RRC connection with the UE.

The above steps 301-303 are a process in which the macro base station establishes an RRC connection with the UE, in which the UE performs a plurality of RRC signaling interactions with the macro base station.

In the embodiment of the present invention, only the RRC signaling in the RRC connection setup process is carried in the site information set as an example. In fact, the site information set may be carried in the macro base station and the UE during communication. Any of the RRC signaling, or carried in the signaling of other protocol layers.

It should be noted that the RRC establishment process of the steps 301-303 is performed when the UE enters the coverage area of the macro base station, and if the UE only covers the macro base station and does not move to the coverage area of any one of the sites, A user plane connection is established between the UE and the macro base station, and the specific process of establishing the UE is not described herein.

In the following steps 304 to 308 of the embodiment of the present invention, only after the UE enters the coverage area of the macro base station, moving to the coverage area of a certain site is taken as an example for description. 304. The macro base station configures context information of the UE to a site covered by the macro base station.

In order to further reduce the signaling overhead during the handover of the user plane connection, the macro base station configures the context information of the UE to the macro base station through the interface of the macro base station and the multiple stations after the UE enters the coverage of the macro base station and establishes the RRC connection. Among the multiple sites covered.

It should be noted that the context information may be carried in any interaction signaling between the macro base station and the multiple sites it covers, which is not limited by the embodiment of the present invention.

In addition, in the signaling for configuring the context information of the UE, the identifier may be immediately activated to indicate whether the configured site needs to activate the context information of the UE to establish a user plane connection with the UE.

In addition, the step 304 is only used to configure the context information of the UE, and the configuration may be used to save, update, or delete the context information for the site that receives the context information, which is not limited by the embodiment of the present invention.

305. The UE sends a measurement report to the macro base station, where the measurement report carries the measurement result and the location information. The measurement report is used to measure the station signal strength around the area where the UE is located, and the location information of the UE.

306. The macro base station determines, according to the measurement report, that the user plane connection of the UE is connected to the first station. Specifically, according to the information such as the station signal strength and the preset cell handover policy included in the measurement report of the UE, the macro base station One of the sites in the coverage area is selected as the first site to connect the user plane of the UE to the first site.

307. The macro base station sends a second activation instruction to the UE, where the second activation instruction carries at least the site identifier of the first station.

The second activation command is PHY/MAC/RRC layer signaling, and the second activation command carries at least the site identifier of the first site determined by the macro base station, such as an IP address, a cell ID, an LPN ID, and the like of the LPN.

308. When the UE receives the second activation command, obtain the site information of the first site from the pre-acquired site information set according to the site identifier of the first site carried by the second activation command, and according to the first The site information of the site connects the user plane of the UE to the first site; The macro base station does not need to send the offload reconfiguration message carrying the offload resource block identifier and the LPN PCI, etc., but only the second activation instruction carrying the station identifier, so that the UE receives the site information set from the site information set. Obtaining the site information of the first site, and sending a pilot preamble to the first site according to the site information of the first site, to apply for a random access procedure, when competing to the uplink authorization of the first site, A user station establishes a user plane connection to implement data interaction between the UE and the first station, which greatly reduces the signaling overhead in the activation process, and reduces the time consuming of the activation process due to the reduction of signaling overhead, and also avoids The delay due to signaling interaction during the activation process.

A person skilled in the art may know that the UE periodically sends a measurement report to the macro base station, and the macro base station may decide to perform user plane connection handover due to factors such as the UE's movement or the station signal. In the following steps 309-30N, only The macro base station decides to perform user plane connection switching on the UE as an example.

309. The macro base station determines, according to the measurement report of the UE, that the user plane connection of the UE is switched from the currently accessed first station to the second station.

This step 309 is the same as step 306, and details are not described herein again.

310. The macro base station sends a deactivation command to the first station, where the deactivation instruction at least carries a device identifier of the UE.

The deactivation command is PHY/MAC/RRC layer signaling.

311. The first station receives the deactivation command, and stops scheduling the UE according to the device identifier of the UE carried by the deactivation command.

The stop scheduling may be performed by deleting the context information of the UE, and may also refer to the data exchange with the UE, which is not limited in this embodiment of the present invention.

312. The macro base station sends a data forwarding instruction to the first station, where the data forwarding instruction carries at least a site identifier of the second site and a device identifier of the UE.

In order to avoid communication interruption or data error caused by handover, the macro base station needs to forward the data of the first station to the second site when the user plane switches.

313. When the first station receives the data forwarding instruction, according to the data forwarding instruction The site identifier of the second site and the device identifier of the UE, the data of the UE is forwarded to the second site; specifically, when receiving the data forwarding instruction, the first site acquires data corresponding to the UE according to the device identifier of the UE, according to the first The site identifier of the second site establishes a data transmission connection with the second site, and forwards data corresponding to the UE to the second site through the data transmission connection.

314. The macro base station sends a first activation instruction to the UE, where the first activation instruction at least carries a site identifier of the second site.

Preferably, at the end of data forwarding, the macro base station sends a first activation command to the UE.

The first activation command is PHY (Physical, Physical) layer signaling or MAC layer signaling or RRC (Radio Resource Control) layer signaling. The first activation command carries at least a site identifier of the second site determined by the macro base station, such as an IP address of the LPN, a cell ID,

LPN ID, etc.

315. When receiving the first activation command, the UE acquires site information of the second site from the pre-stored site information set according to the site identifier, and accesses according to the site information of the second site. The second site.

The macro base station does not need to send the offload reconfiguration message carrying the offload resource block identifier and the LPN PCI, etc., but only the first activation command carrying the site identifier of the second station, so that the UE Obtaining the site information of the second site from the site information set, and sending a pilot preamble to the second site according to the site information of the second site, to apply for a random access procedure, and competing for the uplink authorization of the first site The user plane connection is established with the second site to implement data interaction between the UE and the second site, which greatly reduces the signaling overhead in the activation process, and reduces the consumption process due to the reduction of signaling overhead. The delay due to the signaling interaction during the activation process is also avoided.

The foregoing steps 309-315 are only described by using a user plane switching process as an example. In an actual scenario, the UE may perform multiple user plane switching in the coverage area of the same macro base station. Narration. Further, in order to avoid excessive capacity occupation, when the macro base station determines

When the UE leaves the service area of the site covered by the macro base station or leaves the coverage area of the macro base station itself, the macro The base station may send an instruction to delete the UE context information to the station, and instruct the station to delete the context information of the UE. The specific steps may be as follows: when the macro base station determines that the UE leaves the coverage area of any station covered by the macro base station. Sending a context deletion instruction to the any site, where the context deletion instruction carries the device identifier of the UE, so that the site that receives the context deletion instruction deletes the context information of the UE. Or, when the macro base station determines that the UE leaves the coverage area of the macro base station, deleting context information of the UE on the macro base station, and sending a context deletion instruction to each station in the macro base station coverage area. And the context deletion instruction carries the device identifier of the UE, so that the site that receives the context deletion instruction deletes the context information of the UE.

The method provided by the embodiment of the present invention, by pre-configuring the site information set on the user equipment, enables the UE to perform user plane connection switching only by activating signaling when the UE frequently accesses the site covered by the macro base station, thereby avoiding The macro base station frequently configures the small station information due to the frequent entry and exit of the UE into the small station, thereby reducing the signaling overhead and delay caused by frequent configuration. Further, the macro base station configures multiple sites available for offloading for the UE through RRC signaling, and configures context information of the UE to multiple sites. When the UE enters or leaves a certain site, the macro base station passes the dedicated PHY/MAC/ The RRC command activates or deactivates the configuration of the site information, which reduces the signaling overhead caused by the signaling interaction during the activation process while reducing the signaling overhead during the activation process. FIG. 4 is a schematic diagram of interaction of a user plane switching method according to an embodiment of the present invention. Referring to FIG. 4, the embodiment specifically includes:

401. The UE sends an RRC connection setup request to the macro base station, where the RRC connection setup request carries the context information of the UE.

402. The macro base station, when receiving the RRC connection setup request, configure the site information set and the second activation command to the user equipment UE, where the site information set includes site information to be offloaded within the coverage of the macro base station; The second activation instruction carries at least the site identifier of the first site;

The second activation instruction includes at least a site identifier of the first site, and may also include a dedicated The PRACH resource and the pilot Preamble are provided for the UE to establish a user plane connection with the first station according to the site identifier of the first station, and may further include a dedicated PRACH resource and a pilot Preamble.

403. When receiving the second activation instruction, the UE acquires site information of the first site from the site information set according to the site identifier of the first site, and according to the first site Site information accessing the first site;

404. The macro base station establishes an RRC connection with the UE.

It should be noted that the steps 403 and 404 have no necessary sequence, and the establishment of the user plane connection and the control plane connection may be performed simultaneously, or may be performed one after another.

The steps after step 404 can be the same as steps 304-315 in the embodiment shown in FIG. 3, and details are not described herein again.

In the embodiment of the present invention, the macro base station configures multiple sites that can be used for offloading by using the RRC signaling, and configures the context information of the UE to multiple LPNs. When the UE is in the coverage area of a certain site, the configuration may be configured. While the site information is set, the second activation command is simultaneously sent by the RRC signaling carrying the site information set, so that the UE establishes a user plane connection with the first site according to the site information of the first site.

The method provided by the embodiment of the present invention, by pre-configuring the site information set on the user equipment, enables the UE to perform user plane connection switching only by activating signaling when the UE frequently accesses the site covered by the macro base station, thereby avoiding The macro base station frequently configures the small station information due to the frequent entry and exit of the UE into the small station, thereby reducing the signaling overhead and delay caused by frequent configuration. Further, the macro base station directly configures the UE to establish a user plane connection with the station by using RRC signaling to configure a plurality of sites that can be used for offloading, thereby reducing the signaling overhead in the activation process and avoiding The delay caused by signaling interaction during activation. FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention. Referring to FIG. 5, the base station includes: a transmitter 501, a receiver 502, a memory 503, and a processor 504 connected to the transmitter 502, the receiver 502, and the memory 503, respectively; The processor 504 is configured to: according to the measurement report of the UE, determine to switch the user plane connection of the UE from the currently accessed first station to the second station; the transmitter 501, configured to The station sends a deactivation command, where the deactivation command at least carries the device identifier of the UE; the transmitter 501 is further configured to send a data forwarding instruction to the first station, where the data forwarding instruction at least carries the a station identifier of the second station and a device identifier of the UE; the transmitter 501 is further configured to send a first activation instruction to the UE, where the first activation instruction at least carries a site identifier of the second site, so that When receiving the first activation instruction, the UE acquires site information of the second site from the pre-stored site information set according to the site identifier, and accesses the site information according to the site information of the second site. Second site.

Optionally, the transmitter 501 is further configured to configure a site information set to the user equipment UE, where the site information set includes site information to be offloaded within the coverage of the base station; or, the transmitter 501, And configured to configure the site information set and the second activation command to the UE, where the second activation command at least carries a site identifier of the first site, so that when the UE receives the second activation command, according to the The site identifier of the first site obtains the site information of the first site from the site information set, and accesses the first site according to the site information of the first site.

Optionally, the transmitter 501 is further configured to send context information of the UE to each site in the site information set; or the transmitter 501 is configured to send the UE to the second site. Contextual information.

Optionally, the processor 504 is further configured to: when the base station determines that the UE leaves the coverage area of the base station, delete context information of the UE on the base station, and use the transmitter 501 to Each of the stations in the coverage area of the base station sends a context deletion command, where the context deletion command carries the device identifier of the UE, so that the site that receives the context deletion instruction deletes the context information of the UE;

Or the transmitter 501 is further configured to: when the base station determines that the UE leaves a coverage area of any site covered by the base station, send a context deletion instruction to the any site, where the context deletion command carries The device identifier of the UE, such that the site that receives the context deletion instruction deletes In addition to the context information of the UE.

Optionally, the first activation instruction and the deactivation instruction are physical layer signaling or media intervention control layer signaling or radio resource control layer signaling.

It should be noted that, when the user base is switched, the base station provided by the foregoing embodiment is only illustrated by the division of the foregoing functional modules. In actual applications, the function distribution may be completed by different functional modules according to requirements, that is, the device is required. The internal structure is divided into different functional modules to perform all or part of the functions described above. In addition, the base station and the user plane switching method provided by the foregoing embodiments are in the same concept, and the specific implementation process is described in the method embodiment, and details are not described herein again.

FIG. 6 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. Referring to FIG. 6, the user equipment includes: a transmitter 601, a receiver 602, a memory 603, and a processor 604 connected to the transmitter, the 601, the receiver 602, and the memory 603, respectively. The receiver 602 is configured to receive the base station. a first activation command sent, the first activation instruction at least carrying a site identifier of the second site; the processor 604, configured to acquire the site of the second site from the pre-stored site information set according to the site identifier The processor 604 is further configured to access the second site according to the site information of the second site.

Optionally,

The receiver 602 is further configured to receive a site information set sent by the base station, where the site information set includes site information to be offloaded within the coverage of the base station; or, the receiver 602 is further configured to receive Configuring the site information set and the second activation command, where the second activation command carries the site identifier of the first site, the dedicated PRACH resource, and the preamble information; the processor 604 is further configured to use the site identifier of the first site. Obtaining the site information of the first site from the site information set, and accessing the first site according to the site information of the first site.

Optionally, the first activation instruction is PHY/MAC/RRC layer signaling.

It should be noted that, when the user equipment is switched in the user plane, only the division of the foregoing functional modules is illustrated. In actual applications, the foregoing function assignment may be completed by different functional modules as needed. The internal structure of the device is divided into different functional modules to complete All or part of the functions described above. In addition, the embodiment of the user equipment and the user plane switching method provided by the foregoing embodiment are in the same concept, and the specific implementation process is described in detail in the method embodiment, and details are not described herein again.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

claims

1. A user plane switching method, characterized in that the method includes:

The macro base station determines to switch the user plane connection of the UE from the currently accessed first site to the second site according to the measurement report of the UE;

The macro base station sends a deactivation instruction to the first station, where the deactivation instruction at least carries the device identification of the UE;

The macro base station sends a data forwarding instruction to the first site, and the data forwarding instruction carries at least the site identification of the second site and the equipment identification of the UE;

The macro base station sends a first activation instruction to the UE, and the first activation instruction carries at least the site identification of the second site, so that when the UE receives the first activation instruction, it The identifier obtains the site information of the second site from a pre-stored site information set, and accesses the second site according to the site information of the second site.

2. The method according to claim 1, characterized in that, the macro base station determines to switch the user plane connection of the UE from the currently accessed first station to the small station information set according to the measurement report of the UE. Before the second site, the method further includes:

The macro base station configures a site information set to the user equipment UE, and the site information set includes site information to be offloaded within the coverage of the macro base station; or,

The macro base station configures the site information set and a second activation instruction to the UE, and the second activation instruction carries at least the site identification of the first site, so that when the UE receives the second activation instruction, Obtain the site information of the first site from the site information set according to the site identifier of the first site, and access the first site based on the site information of the first site.

3. The method according to claim 1 or 2, characterized in that, the method further includes: the macro base station sending the context information of the UE to each station in the station information set; or, the macro base station The station sends the context information of the UE to the second station.

4. The method according to any one of claims 1 to 3, characterized in that, the method further includes: When the macro base station determines that the UE leaves the coverage area of the macro base station, it deletes the context information of the UE on the macro base station, and sends a context deletion instruction to each station in the coverage area of the macro base station, so The context deletion instruction carries the device identification of the UE, so that the site that receives the context deletion instruction deletes the context information of the UE;

Or, when the macro base station determines that the UE leaves the coverage area of any site covered by the macro base station, it sends a context deletion instruction to the any site, where the context deletion instruction carries the device identification of the UE. , causing the station that receives the context deletion instruction to delete the context information of the UE.

5. The method according to any one of claims 1 to 4, characterized in that the first activation instruction and deactivation instruction are physical layer PHY signaling or media access control MAC layer signaling or radio resource control layer RRC. signaling.

6. A user plane switching method, characterized in that the method includes:

The UE receives the first activation instruction sent by the macro base station, and the first activation instruction carries at least the site identifier of the second site if;

The UE obtains the site information of the second site from a pre-stored site information set according to the site identifier;

The UE accesses the second site according to the site information of the second site.

7. The method according to claim 6, wherein before the UE receives the first activation instruction sent by the macro base station, the method further includes:

The UE receives a site information set sent by the macro base station, where the site information set includes site information to be offloaded within the coverage of the macro base station; or,

The UE receives and configures the site information set and a second activation instruction. The second activation instruction carries the site identification, dedicated PRACH resources and preamble information of the first site; the UE obtains the site information from the first site according to the site identification of the first site. Obtain the site information of the first site from the site information set, and access the first site according to the site information of the first site.

8. The method according to claim 6 or 7, characterized in that the first activation instruction is PHY/MAC/RRC layer signaling.

9. A base station, characterized in that the base station includes: a transmitter, a receiver, a memory, and a processor connected to the transmitter, the receiver, and the memory respectively;

The processor is configured to determine, according to the measurement report of the UE, to switch the user plane connection of the UE from the currently accessed first site to the second site;

The transmitter is configured to send a deactivation instruction to the first station, where the deactivation instruction at least carries the device identification of the UE;

The transmitter is also configured to send a data forwarding instruction to the first site, where the data forwarding instruction carries at least the site identification of the second site and the equipment identification of the UE;

The transmitter is further configured to send a first activation instruction to the UE, where the first activation instruction at least carries the site identification of the second station, so that when the UE receives the first activation instruction, Obtain the site information of the second site from a pre-stored site information set according to the site identifier, and access the second site based on the site information of the second site.

10. The base station according to claim 9, characterized in that,

The transmitter is also used to configure a site information set to the user equipment UE, where the site information set includes site information to be offloaded within the coverage of the base station; or,

The transmitter is further configured to configure the site information set and a second activation instruction to the UE. The second activation instruction carries at least the site identification of the first site, so that the UE receives the second activation instruction. When the instruction is activated, the site information of the first site is obtained from the site information set according to the site identification of the first site, and the first site is accessed based on the site information of the first site.

11. The base station according to any one of claims 9-10, characterized in that,

The transmitter is also used to send the context information of the UE to each site in the site information set; or, the transmitter is also used to send the context information of the UE to the second site.

12. The base station according to any one of claims 9-11, characterized in that, the processor is further configured to delete all data on the base station when the base station determines that the UE leaves the coverage area of the base station. context information of the UE, and sends it to each station in the coverage area of the base station through the transmitter. The following delete instruction, the context deletion instruction carries the device identification of the UE, so that the site that receives the context deletion instruction deletes the context information of the UE;

Or, the transmitter is further configured to, when the base station determines that the UE leaves the coverage area of any site covered by the base station, send a context deletion instruction to the any site, where the context deletion instruction carries the The device identification of the UE causes the station that receives the context deletion instruction to delete the context information of the UE.

13. The base station according to any one of claims 9 to 12, characterized in that the first activation instruction and deactivation instruction are physical layer signaling or media access control layer signaling or radio resource control layer signaling.

14. A user equipment, characterized in that the user equipment includes: a transmitter, a receiver, a memory, and a processor connected to the transmitter, the receiver, and the memory respectively;

The receiver is configured to receive a first activation instruction sent by the base station, where the first activation instruction at least carries a site identification of the second site;

The processor is configured to obtain the site information of the second site from a pre-stored site information set according to the site identifier;

The processor is further configured to access the second site according to the site information of the second site.

15. The user equipment according to claim 14, characterized in that,

The receiver is also configured to receive a site information set sent by the base station, where the site information set includes site information to be offloaded within the coverage area of the base station; or,

The receiver is also configured to receive and configure the site information set and a second activation instruction, where the second activation instruction carries the site identification, dedicated PRACH resources and preamble information of the first site; the processor is also configured to configure the site information set according to the The site identifier of the first site obtains the site information of the first site from the site information set, and accesses the first site based on the site information of the first site.

16. The user equipment according to any one of claims 14 or 15, characterized in that the first activation instruction is PHY/MAC/RRC layer signaling.