CN115412979A

CN115412979A - Session switching method, device, chip and module equipment

Info

Publication number: CN115412979A
Application number: CN202110594231.XA
Authority: CN
Inventors: 苗润泉; 范慧芳
Original assignee: Spreadtrum Semiconductor Nanjing Co Ltd
Current assignee: Spreadtrum Semiconductor Nanjing Co Ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-11-29
Also published as: WO2022247657A1

Abstract

The application discloses a session switching method, a session switching device, a chip and module equipment, wherein the method comprises the following steps: the first network access equipment receives Protocol Data Unit (PDU) session establishment request information from terminal equipment, wherein the PDU session establishment request information comprises: a data network name DNN and a first quality of service QoS rule; the first network access equipment determines a second QoS rule based on the PDU session establishment request information, and establishes a second PDU session between the terminal equipment and the network indicated by the DNN, wherein the second QoS rule is determined by the first network access equipment based on the first QoS rule; the first network access device allocates resources to the terminal device based on the second QoS rule. The method described by the application is beneficial to keeping the QoS of the terminal equipment consistent before and after the switching, and avoids the influence of the terminal equipment on the data service in the switching process.

Description

Session switching method, device, chip and module equipment

Technical Field

The present invention relates to the field of communications, and in particular, to a method, an apparatus, a chip, and a module device for session switching.

Background

With the development of the times, in order to enjoy better network services indoors, more and more users install access devices, which may be referred to as indoor network access devices, at home. The terminal device may access the data network through an indoor network access device deployed indoors.

When the user moves from outdoor to indoor, the terminal equipment is disconnected from the outdoor macro base station and is accessed into the indoor network access equipment. For example, when a user is playing a game or the like, a Service having a high requirement for Quality of Service (QoS) may have a certain influence on data traffic if the QoS before and after switching is different. Therefore, how to keep the QoS consistent before and after the handover and avoid the terminal device from affecting the data service during the handover process is an urgent problem to be solved.

Disclosure of Invention

The application provides a session switching method, a session switching device, a session switching chip and module equipment, which are beneficial to keeping the QoS of terminal equipment consistent before and after switching, and avoiding the influence of the terminal equipment on data services in the switching process.

In a first aspect, the present application provides a session handover method, including: the first network access equipment receives Protocol Data Unit (PDU) session establishment request information from terminal equipment, wherein the PDU session establishment request information comprises: a data network name DNN and a first quality of service QoS rule, where the first QoS rule is a QoS rule determined by a core network device for a first PDU session for a second network access device, and is used to meet a requirement of the terminal device for a data service, and the first PDU session is a PDU session established by the second network access device and the core network device; the first network access device determines a second QoS rule based on the PDU session establishment request information, and establishes a second PDU session between the terminal device and the network indicated by the DNN, where the second QoS rule is a rule determined by the first network access device based on the first QoS rule, and is used for the first network access device to allocate resources to the terminal device; the first network access device allocates resources to the terminal device based on the second QoS rule.

In a possible implementation manner, before the first network access device performs the step of receiving a protocol data unit PDU session establishment request message from a terminal device, the first network access device broadcasts a first message, where the first message is used to indicate that the first network access device is not connected to a core network.

In a possible implementation manner, the first network access device sends second information to the terminal device, where the second information includes the second QoS rule.

In one possible implementation, the PDU session setup request information further comprises one or more of a type of the first PDU session, a session and service continuity SSC, and a quality of service QoS request.

In a second aspect, the present application provides a session handover method, including: the terminal equipment sends protocol data unit PDU session establishment request information to the first network access equipment, wherein the PDU session establishment request information comprises: a data network name DNN and a first quality of service QoS rule, where the first QoS rule is a QoS rule determined by a core network device for a first PDU session for a second network access device, and is used to meet a requirement of the terminal device for a data service, and the first PDU session is a PDU session established by the second network access device and the core network device; the terminal equipment receives PDU session establishment acceptance information from the first network access equipment, wherein the PDU session establishment acceptance information is used for indicating that the first network access equipment establishes a second PDU session; and the terminal equipment sends data to the network indicated by the DNN through the second PDU session based on first resources, wherein the first resources are resources allocated to the terminal equipment by the first network access equipment based on a second QoS rule, and the second QoS rule is the QoS rule determined by the first network access equipment according to the PDU session establishment request information.

In a possible implementation manner, the terminal device receives first information from the first network access device, where the first information is used to indicate that the first network access device is not connected to a core network device.

In one possible implementation, the terminal device receives second information from the first network access device, where the second information includes the second QoS rule.

In a possible implementation manner, before the terminal device receives the PDU session establishment acceptance information from the first network access device, the terminal device keeps the first PDU session not released; after the terminal device receives the PDU session setup accept message from the first network access device, the method further comprises: the terminal device disconnects the first PDU session.

In a third aspect, the present application provides a session handover method, including: the method comprises the steps that first network access equipment receives a non-access stratum (NAS) message sent by terminal equipment through an N1 interface, wherein the non-access stratum message is used for establishing a Protocol Data Unit (PDU) session; the first network access device forwards the NAS message to a core network device.

In a possible implementation manner, before the first network access device receives a NAS message sent by a terminal device through an N1 interface, the first network access device broadcasts third information, where the third information is used to indicate that the first network access device is connected to a core network.

In a fourth aspect, the present application further provides a communication device, where the communication unit is configured to receive protocol data unit PDU session establishment request information from a terminal device, where the PDU session establishment request information includes: a first quality of service (QoS) rule of a Data Network Name (DNN), wherein the first QoS rule is a QoS rule determined by a core network device for a second network access device aiming at a first Protocol Data Unit (PDU) session, and is used for meeting the requirement of the terminal device on data service, and the first PDU session is the PDU session established by the second network access device and the core network device; the processing unit is configured to determine a second QoS rule based on the PDU session establishment request information, and establish a second PDU session between the terminal device and the network indicated by the DNN, where the second QoS rule is a rule determined by the first network access device based on the first QoS rule, and is used for the first network access device to allocate resources to the terminal device; the processing unit is further configured to allocate resources to the terminal device based on the second QoS rule.

In a fifth aspect, the present application further provides a communication apparatus, including a communication unit, wherein: the communication unit is configured to send protocol data unit PDU session establishment request information to the first network access device, where the PDU session establishment request information includes: a data network name DNN and a first QoS rule, where the first QoS rule is a QoS rule determined by a core network device for a second network access device, and is used to meet a requirement of the terminal device for a data service, and the first PDU session is a PDU session established by the second network access device and the core network device; the communication unit is further configured to receive PDU session establishment acceptance information from the first network access device, where the PDU session establishment acceptance information is used to indicate that the first network access device has established a second PDU session; the communication unit is further configured to send data to the network indicated by the DNN through the second PDU session based on a first resource, where the first resource is a resource allocated by the first network access device to the terminal device based on a second QoS rule, and the second QoS rule is a QoS rule determined by the first network access device according to the PDU session establishment request information.

In a sixth aspect, the present application further provides a communication apparatus comprising a communication unit, wherein: the communication unit is used for receiving a non-access stratum (NAS) message sent by terminal equipment through an N1 interface, wherein the non-access stratum message is used for establishing a Protocol Data Unit (PDU) session; the communication unit is further configured to forward the NAS message to the core network device.

In a seventh aspect, the present application further provides a chip, where the chip is configured to receive protocol data unit PDU session establishment request information from a terminal device, where the PDU session establishment request information includes: a data network name DNN and a first QoS rule, where the first QoS rule is a QoS rule that is determined by a core network device for a first PDU session for a second network access device, and is used to meet a requirement of the terminal device for a data service, and the first PDU session is a PDU session established by the second network access device and the core network device; the chip is further configured to determine a second QoS rule based on the PDU session establishment request information, and establish a second PDU session between the terminal device and the network indicated by the DNN, where the second QoS rule is a rule determined by the first network access device based on the first QoS rule, and is used for the first network access device to allocate resources to the terminal device; the chip is further configured to allocate resources to the terminal device based on the second QoS rule.

In an eighth aspect, the present application further provides a chip, where the chip is configured to send protocol data unit PDU session establishment request information to a first network access device, where the PDU session establishment request information includes: a data network name DNN and a first quality of service QoS rule, where the first QoS rule is a QoS rule determined by the core network device for a second network access device for a first PDU session, and is used to meet a requirement of the terminal device for a data service, and the first PDU session is a PDU session established by the second network access device and the core network device; the chip is further configured to receive PDU session establishment acceptance information from the first network access device, where the PDU session establishment acceptance information is used to indicate that the first network access device has established a second PDU session; the chip is further configured to send data to the network indicated by the DNN through the second PDU session based on a first resource, where the first resource is a resource allocated to the terminal device by the first network access device based on a second QoS rule, and the second QoS rule is a QoS rule determined by the first network access device according to the PDU session establishment request information.

In a ninth aspect, the present application further provides a chip, where the chip is configured to receive a non-access stratum NAS message sent by a terminal device through an N1 interface, where the non-access stratum message is used to establish a protocol data unit PDU session; the chip is further configured to forward the NAS message to a core network device.

In a tenth aspect, the present application further provides a module device, which includes a communication module, a power module, a storage module, and a chip module, wherein: the power module is used for providing electric energy for the module equipment; the storage module is used for storing data and instructions; the communication module is used for carrying out internal communication of the module equipment or is used for carrying out communication between the module equipment and external equipment; this chip module is used for: receiving Protocol Data Unit (PDU) session establishment request information from a terminal device, wherein the PDU session establishment request information comprises a Data Network Name (DNN) and a first quality of service (QoS) rule, the first QoS rule is a QoS rule which is determined by a core network device for a second network access device aiming at a first PDU session and is used for meeting the requirement of the terminal device on data service, and the first PDU session is the PDU session established by the second network access device and the core network device; determining a second QoS rule based on the PDU session establishment request information, and establishing a second PDU session between the terminal device and the network indicated by the DNN, wherein the second QoS rule is a rule determined by the first network access device based on the first QoS rule, and is used for the first network access device to allocate resources for the terminal device; and allocating resources for the terminal device based on the second QoS rule.

In an eleventh aspect, the present application further provides a module device, which includes a communication module, a power module, a storage module, and a chip module, wherein: the power module is used for providing electric energy for the module equipment; the storage module is used for storing data and instructions; the communication module is used for carrying out internal communication of the module equipment or is used for carrying out communication between the module equipment and external equipment; the chip module is used for: sending Protocol Data Unit (PDU) session establishment request information to the first network access device, wherein the PDU session establishment request information comprises one or more of the following information: a data network name DNN and a first quality of service QoS rule, where the first QoS rule is a QoS rule that the core network device determines for the second network access device for a first PDU session, and is used to meet a requirement of the terminal device for a data service, and the first PDU session is a PDU session established by the second network access device and the core network device; receiving PDU session establishment acceptance information from the first network access equipment, wherein the PDU session establishment acceptance information is used for indicating that the first network access equipment establishes a second PDU session; and sending data to the network indicated by the DNN through the second PDU session based on a first resource, where the first resource is a resource allocated to the terminal device by the first network access device based on a second QoS rule, and the second QoS rule is a QoS rule determined by the first network access device according to the PDU session establishment request information.

In a twelfth aspect, the present application further provides a module device, which includes a communication module, a power module, a storage module, and a chip module, wherein: the power module is used for providing electric energy for the module equipment; the storage module is used for storing data and instructions; the communication module is used for carrying out internal communication of the module equipment or is used for carrying out communication between the module equipment and external equipment; the chip module is used for: receiving a non-access stratum (NAS) message sent by terminal equipment through an N1 interface, wherein the non-access stratum message is used for establishing a Protocol Data Unit (PDU) session; forwarding the NAS message to the core network device.

In a thirteenth aspect, the present application further provides a communications apparatus comprising a processor, a memory, and a transceiver; the transceiver is used for receiving channels or signals or transmitting channels or signals; the memory for storing a computer program; the processor is configured to invoke the computer program from the memory to perform the method according to the first aspect or the second aspect and any possible implementation thereof.

In a fourteenth aspect, the present application further provides a computer-readable storage medium having a computer program stored therein, which, when run on a communication apparatus, causes the communication apparatus to perform the method as described in the first or second aspect and any one of the possible implementations thereof.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of a terminal device switching a network access device;

fig. 2 is a schematic diagram of a network architecture provided in an embodiment of the present application;

fig. 3 is a flowchart illustrating a session handover method according to an embodiment of the present application;

fig. 4 is a flowchart illustrating another session handover method provided in an embodiment of the present application;

fig. 5 is a schematic flowchart of another session handover provided in an embodiment of the present application;

fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of another communication device provided in an embodiment of the present application;

fig. 8 is a schematic structural diagram of a module apparatus according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the following examples of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the listed items.

It should be noted that the terms "first," "second," "third," and the like in the description and claims of the present application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than described or illustrated herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

First, some terms referred to in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

1. The terminal equipment:

terminal equipment refers to various forms of User Equipment (UE), access terminal, subscriber unit, subscriber station, mobile Station (MS), remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user device. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computer device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment.

2. A network access device:

the network access device may be a small cell base station, an Access Point (AP), or a home base station non-public network cell base station. A base station is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, a device providing a Base Station function in a 2G network includes a Base Transceiver Station (BTS), a device providing a Base Station function in a 3G network includes a node B (NodeB), a device providing a Base Station function in a 4G network includes an Evolved node B (eNB), a device providing a Base Station function in a 5G New Radio (NR) includes a gNB, and a continuously Evolved node B (ng-eNB), where the gNB and the terminal communicate using an NR technique, the ng-eNB and the terminal communicate using an Evolved Universal Terrestrial Radio Access (E-UTRA) technique, and both the gNB and the ng-eNB may be connected to the 5G core network. The network access device in the embodiment of the present application also includes a device that provides an access network function in a future new communication system, and the like.

The network Access devices may be classified into two types, one type is a network Access device connected to a core network device, such as a macro base Station, and the other type is a network Access device not connected to the core network device, such as an enhanced home Gateway (eRG) and a home Radio Access Point (PRAS).

Nowadays, more and more users install an indoor network access device at home, and a terminal device can enjoy better network services at home through the indoor network access device. According to the current development of the third Generation Partnership Project (3 gpp), in the field of indoor network enhancement, there may be indoor network access devices, such as PRAS and errg, that directly connect to a data network without connecting to a core network device.

When the terminal device is switched to the indoor network access device through the outdoor network access device, as shown in fig. 1, there is no network interface between the indoor network access device and the outdoor network access device, if the terminal device is transmitting a data Service with a high requirement on Quality of Service (QoS), the switching is performed, and if the QoS cannot be kept consistent, the data Service of the terminal device is affected.

Besides, in the discussion of the fixed-mobility convergence, a variety of architectures are determined, one of which is that the indoor network access device is connected to the core network device, but at this time, there is no N1 interface between the real terminal device and the core network device, so that the core network device cannot acquire a Non-access stratum (NAS) message sent by the terminal device as a main body, and cannot really confirm the service requirement of the terminal device, and the other architecture is that the indoor network access device is not connected to the core network of the operator, but is directly connected to the data network through the fixed network. For both these architectures, the core network of the mobile operator cannot identify the real user terminal, and therefore, in the process of switching the terminal device, certain influence may be caused on the service of the terminal device.

In order to keep the QoS consistent before and after the handover and avoid affecting the data service of the terminal device, embodiments of the present application provide a method and a communication device for session handover. In order to better understand the embodiments of the present application, a network architecture of the embodiments of the present application is described below:

the embodiment of the present application may be applied to the network architecture schematic diagram shown in fig. 2, where the network architecture shown in fig. 2 is a network architecture of a wireless communication system, the network architecture generally includes a terminal device and a first network access device, and the number and form of the devices do not form a limitation to the embodiment of the present application. The terminal device is connected with the first network access device, and the terminal device can acquire data network services through the first network access device, wherein the first network access device can provide communication services for the plurality of terminal devices. In the embodiment of the application, a unidirectional communication link from a first network access device to a terminal device is defined as a downlink, data transmitted on the downlink is downlink data, and the transmission direction of the downlink data is called as a downlink direction; and the unidirectional communication link from the terminal device to the first network access device is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is referred to as an uplink direction.

The method provided in the embodiment of the present application may be applied to various communication systems, for example, an internet of things (IoT) system, a narrowband band internet of things (NB-IoT) system, a Long Term Evolution (LTE) system, a fifth generation (5 th-generation, 5G) communication system, a hybrid architecture of LTE and 5G, a New Radio (NR) system of 5G, a new communication system appearing in future communication development, and the like.

The following describes the session handoff method provided in the embodiment of the present application in further detail:

referring to fig. 3, fig. 3 is a flowchart illustrating a session handover method according to an embodiment of the present disclosure. As shown in fig. 3, the session switching method includes the following steps 301 to 305. The method shown in fig. 3 may be executed by the first network access device and the terminal device, or the first network access device and the terminal device chip. Fig. 3 illustrates an example of an implementation body in which the terminal device and the first network access device are used as methods. The execution subject of the session switching method shown in other figures in the embodiment of the present application is the same, and will not be described in detail later. Wherein:

301. the terminal equipment sends protocol data unit PDU session establishment request information to the first network access equipment.

In this embodiment of the present application, after the terminal device accesses the first network access device, the terminal device sends Protocol Data Unit (PDU) session establishment request information to the first network access device. The PDU session setup request information is used to instruct the first network access device to establish a PDU session. The first network access device is generally an indoor network access device, is not connected to a core network device, and can be directly connected to a data network.

In one possible implementation, the PDU session establishment request information may include one or more of the following information: a type of the first PDU Session, a Data Network Name (DNN), a Session and Service Continuity (SSC), a Quality of Service (QoS) request, and a first QoS rule. In addition, the PDU session establishment request message may further include other information, which is not limited in this embodiment.

The DNN is used for indicating the name of a data network corresponding to the PDU session which the terminal equipment wishes to establish. The SSC is used to indicate the SSC pattern in which the terminal device wishes to establish a PDU session. The QoS request is used to instruct the first network access device to generate a second QoS rule. The first PDU session is a PDU session established by a second network access device and a core network device, where the second network access device is a network access device connected to the terminal device before accessing the first network access device, the second network access device is usually an outdoor network access device, such as a macro base station, and the second network access device may also be an indoor network access device, such as a small base station in a business park. The first QoS rule is a QoS rule determined by the core network device for the second network access device, and is used to meet a requirement of the terminal device for a data service. The terminal equipment sends the PDU session establishment request information to the first network access equipment to request the first network access equipment to provide the same network service as the second network access equipment.

302. The first network access device determines a second QoS rule based on the PDU session establishment request information and establishes a second PDU session between the terminal device and the network indicated by the DNN.

In a possible implementation manner, the first network access device generates a second QoS rule based on the PDU session establishment request information, where the second QoS rule may be the same as the first QoS rule, or the first network access device may also appropriately adjust the first QoS rule based on its own load condition and the PDU session establishment request information, and generate the second QoS rule, for example, in a case of light load, more resources may be allocated to the terminal device, so as to improve user experience. Based on the mode, the corresponding QoS of the terminal equipment before and after switching can be kept consistent, and the data service of the terminal equipment is not easily influenced.

303. The first network access device sends PDU session establishment acceptance information.

In this embodiment of the present application, after the first network access device establishes the second PDU Session between the terminal device and the network indicated by the DNN, the first network access device sends PDU Session Establishment acceptance (PDU Session Establishment Accept) information to the terminal device. The PDU session setup accept message indicates that the first network access device has established the second PDU session. Based on the mode, the method is beneficial to ensuring that the terminal equipment can determine the PDU session establishment completion as early as possible and transmit data services in time.

304. The first network access device allocates resources to the terminal device based on the second QoS rule.

In this embodiment of the present application, the second QoS rule is used for the first network access device to allocate resources to the terminal device, so as to meet a requirement of the terminal device for a data service. And after the first network access equipment determines the second QoS rule, the first network access equipment allocates resources for the terminal equipment based on the second QoS rule. Because the second QoS rule is determined by the first network access device based on the first QoS rule, the first network access device allocates resources to the terminal device based on the second QoS rule, which is beneficial to avoiding the terminal device from affecting data services in the process of switching.

In a possible implementation manner, after determining resources allocated to the terminal device, the first network access device may send resource indication information to the terminal device, where the indication information is used to indicate a first resource, and the first resource is used for data service transmission by the terminal device.

In this embodiment of the application, the execution sequence of step 303 and step 304 is not limited, and step 303 and step 304 may be executed simultaneously, or step 304 is indicated first and then step 303 is executed.

305. And the terminal equipment transmits data to the network indicated by the DNN through the second PDU session based on the first resource.

In the embodiment of the application, after determining the first resource, the terminal device sends data to the network indicated by the DNN through the second PDU session based on the first resource. The first resource is a resource allocated to the terminal device by the first network access device based on a second QoS rule, and the second QoS rule is a QoS rule determined by the first network access device according to the PDU session establishment request information. Because the second QoS rule is determined by the first network access device based on the first QoS rule, the first resource allocated by the first network access device based on the second QoS rule can meet the data service requirement of the terminal device, and it is beneficial to avoid that the terminal device has a certain influence on the data service in the switching process.

Referring to fig. 4, fig. 4 is a flowchart illustrating a session handover method according to an embodiment of the present disclosure. As shown in fig. 4, the session switching method includes the following steps 401 to 408. The implementation manners of steps 402 to 404 are the same as those of steps 301 to 303, and the implementation manners of steps 407 and 408 are the same as those of steps 304 and 305, which are not described herein again in this embodiment of the present application.

401. The first network access device broadcasts first information.

In this embodiment, the first information is used to indicate that the first network access device is not connected to a core network. The first information may be a special public land mobile network code or other network code.

In one possible implementation, the first information broadcasted by the first network access device is received before the terminal device accesses the first network access device. And after receiving the first information, the terminal equipment accesses the indoor network access equipment based on local authentication. Based on the mode, the terminal device determines that the first network access device is not connected with the core network device through the first information, and can access the first network access device by adopting a corresponding access mode.

402. The terminal equipment sends protocol data unit PDU conversation establishment request information.

403. The first network access device determines a second QoS rule based on the PDU session establishment request information and establishes a second PDU session between the terminal device and the network indicated by the DNN.

404. The first network access device sends PDU session establishment acceptance information.

405. The first network access device sends the second information.

In this embodiment, the first network access device sends the second information to the terminal device, where the second information includes the second QoS rule. If the terminal device needs to access to another network access device after being disconnected from the first network access device, the second QoS rule may be sent to the other network access device. Based on the mode, the other network access devices can generate the corresponding QoS rules according to the second QoS rules, so that the influence of the terminal device on the data service in the switching process can be avoided.

Step 405 only needs to be executed after step 403, for example, step 405 may also be executed before step 404 or after step 406, and the like, which is not limited in this embodiment of the application.

406. The terminal device disconnects the first PDU session.

In the embodiment of the application, before the terminal device receives the PDU session establishment acceptance information from the first network access device, the terminal device keeps the first PDU session not to be released; after the terminal device receives the PDU session establishment accept message from the first network access device, the terminal device disconnects the first PDU session. Based on the mode, the influence on the data service in the switching process of the terminal equipment is favorably avoided.

407. The first network access device allocates resources to the terminal device based on the second QoS rule.

408. And the terminal equipment transmits data to the network indicated by the DNN through the second PDU session based on the first resource.

Referring to fig. 5, fig. 5 is a flowchart illustrating a session handover method according to an embodiment of the present disclosure. As shown in fig. 5, the session switching method includes steps 501 to 502.

501. And the terminal equipment sends a non-access stratum (NAS) message to the first network access equipment through the N1 interface.

In this embodiment of the present application, a terminal device sends a Non-access stratum (NAS) message to a first network access device through an N1 interface, where the NAS message is used to establish a protocol data unit PDU session.

In a possible implementation manner, before the terminal device accesses the first network access device, the terminal device receives third information broadcasted by the first network access device, where the third information is used to indicate that the first network access device is connected to the core network. And after receiving the first information, the terminal equipment determines that the first network access equipment is connected with the core network. After the terminal device accesses the first network access device, the terminal device requests the core network device to perform authentication through the first network access device so as to access the core network device.

Alternatively, the third information may be a special public land mobile network code or other network code.

In a possible implementation manner, before the terminal device accesses the first network access device, the first terminal device is connected to the second network access device, the second network access device and the core network device establish a first PDU session for the terminal device, and the first QoS rule determined by the core network device for the second network access device is used by the second network access device to allocate resources to the terminal device based on the first QoS rule, so as to meet the requirement of the terminal device on the data service. The NAS message sent by the terminal device carries the first QoS rule, so that the second QoS rule generated by the core network device based on the first QoS rule can meet the requirement of the user on the data service, and the influence on the data service of the terminal device in the switching process is avoided.

502. The first network access device forwards the NAS message to the core network device.

In a possible implementation manner, the first network access device forwards the NAS message to the core network device in a transparent transmission manner, where the transparent transmission manner is only responsible for transmitting data to be transmitted to the destination node, and meanwhile, ensures the transmission quality without processing the transmitted data. Based on the mode, as the NAS message received by the core network equipment is sent by the terminal equipment, the core network equipment can make the service requirement of the terminal equipment more clear, establish PDU session for the terminal equipment and generate more proper QoS rule, thereby avoiding the influence on the data service of the terminal equipment in the switching process.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device shown in fig. 6 may be used to perform some or all of the functions of the first network access equipment described above. The apparatus may be the first network access device, or may be an apparatus in the first network access device, or may be an apparatus capable of being used in cooperation with the first network access device. The communication device can also be a chip system. The communication apparatus shown in fig. 6 may include a communication unit 601 and a processing unit 602. The processing unit 602 is configured to perform data processing. A communication unit 601, configured to communicate with other devices. The communication unit 601 is integrated with a receiving unit and a transmitting unit. The communication unit 601 may also be referred to as a transceiving unit. Alternatively, communication section 601 may be divided into a reception section and a transmission section. The processing unit 602 and the communication unit 601 are the same, and the description is omitted. Wherein:

the communication unit 601 is configured to receive protocol data unit PDU session establishment request information from a terminal device, where the PDU session establishment request information includes: a first quality of service (QoS) rule of a Data Network Name (DNN), wherein the first QoS rule is a QoS rule which is determined by core network equipment for second network access equipment aiming at a first Protocol Data Unit (PDU) session and is used for meeting the requirement of the terminal equipment on data service, and the first PDU session is a PDU session established by the second network access equipment and the core network equipment; the processing unit 602, configured to determine a second QoS rule based on the PDU session establishment request information, and establish a second PDU session between the terminal device and the network indicated by the DNN, where the second QoS rule is a rule determined by the first network access device based on the first QoS rule, and is used for the first network access device to allocate resources to the terminal device; the processing unit 602 is further configured to allocate resources to the terminal device based on the second QoS rule.

In a possible implementation manner, before the communication unit 601 is configured to receive the protocol data unit PDU session establishment request information from the terminal device, the communication unit 601 is further configured to broadcast first information, where the first information is used to indicate that the first network access device is not connected to the core network.

In a possible implementation manner, the communication unit 601 is configured to send second information to the terminal device, where the second information includes the second QoS rule.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication apparatus shown in fig. 6 may be used to perform part or all of the functions of the terminal device in any of the above-described method embodiments. The apparatus may be a terminal device, an apparatus in the terminal device, or an apparatus capable of being used in cooperation with the terminal device. The communication apparatus shown in fig. 6 may include a communication unit 601 and a processing unit 602. Wherein:

the communication unit 601 is configured to send protocol data unit PDU session establishment request information to the first network access device, where the PDU session establishment request information includes: a data network name DNN and a first quality of service QoS rule, where the first QoS rule is a QoS rule determined by a core network device for a second network access device, and is used to meet a requirement of the terminal device for a data service, and the first PDU session is a PDU session established by the second network access device and the core network device; the communication unit 601 is further configured to receive PDU session establishment acceptance information from the first network access device, where the PDU session establishment acceptance information is used to indicate that the first network access device has established a second PDU session; the communication unit 601 is further configured to send data to the network indicated by the DNN through the second PDU session based on a first resource, where the first resource is a resource allocated by the first network access device to the terminal device based on a second QoS rule, and the second QoS rule is a QoS rule determined by the first network access device according to the PDU session establishment request information.

In a possible implementation manner, the communication unit 601 is further configured to receive first information from the first network access device, where the first information is used to indicate that the first network access device is not connected to a core network device.

In a possible implementation, the communication unit 601 is further configured to send, to the first network access device, second information including the second QoS rule.

In a possible implementation manner, before the communication unit 601 is configured to receive the PDU session setup acceptance information from the first network access device, the processing unit 602 is configured to keep the first PDU session unreleased; after the communication unit 601 is configured to receive the PDU session setup accept message from the first network access device, the processing unit 602 is further configured to disconnect the first PDU session.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication apparatus shown in fig. 6 may be used to perform part or all of the functions of the first network access device in any of the above-described method embodiments. The apparatus may be the first network access device, or may be an apparatus in the first network access device, or may be an apparatus capable of being used in cooperation with the first network access device. The communication apparatus shown in fig. 6 may include a communication unit 601 and a processing unit 602. Wherein:

the communication unit 601 is configured to receive a non-access stratum NAS message sent by a terminal device through an N1 interface, where the non-access stratum NAS message is used to establish a protocol data unit PDU session; the communication unit 601 is further configured to forward the NAS message to the core network device.

In a possible implementation manner, the communication unit 601 is further configured to broadcast third information, where the third information is used to indicate that the first network access device is connected to the core network.

The embodiment of the present application further provides a chip, where the chip may perform relevant steps of the first network access device in the foregoing method embodiment.

The chip is used for receiving protocol data unit PDU session establishment request information from a terminal device, wherein the PDU session establishment request information comprises: a data network name DNN and a first QoS rule, where the first QoS rule is a QoS rule determined by a core network device for a first PDU session for a second network access device, and is used to meet a requirement of the terminal device for a data service, and the first PDU session is a PDU session established by the second network access device and the core network device; the chip is further configured to determine a second QoS rule based on the PDU session establishment request information, and establish a second PDU session between the terminal device and the network indicated by the DNN, where the second QoS rule is a rule determined by the first network access device based on the first QoS rule, and is used for the first network access device to allocate resources to the terminal device; the chip is further configured to allocate resources to the terminal device based on the second QoS rule.

In a possible implementation manner, before the chip is configured to receive the protocol data unit PDU session establishment request information from the terminal device, the chip is further configured to broadcast first information, where the first information is used to indicate that the first network access device is not connected to the core network.

In a possible implementation manner, the chip is configured to send second information to the terminal device, where the second information includes the second QoS rule.

The embodiment of the application also provides a chip, and the chip can execute the relevant steps of the terminal device in the embodiment of the method.

The chip is configured to send protocol data unit PDU session establishment request information to a first network access device, where the PDU session establishment request information includes: a data network name DNN and a first quality of service QoS rule, where the first QoS rule is a QoS rule determined by the core network device for a second network access device for a first PDU session, and is used to meet a requirement of the terminal device for a data service, and the first PDU session is a PDU session established by the second network access device and the core network device; the chip is further configured to receive PDU session establishment acceptance information from the first network access device, where the PDU session establishment acceptance information is used to indicate that the first network access device has established a second PDU session; the chip is further configured to send data to the network indicated by the DNN through the second PDU session based on a first resource, where the first resource is a resource allocated to the terminal device by the first network access device based on a second QoS rule, and the second QoS rule is a QoS rule determined by the first network access device according to the PDU session establishment request information.

In a possible implementation manner, the chip is further configured to receive first information from the first network access device, where the first information is used to indicate that the first network access device is not connected to a core network device.

In a possible implementation, the chip is further configured to send, to the first network access device, second information that includes the second QoS rule.

In a possible implementation manner, before the chip is used for receiving the PDU session establishment acceptance information from the first network access device, the chip is used for keeping the first PDU session not released; the chip is further configured to disconnect the first PDU session after the chip is configured to receive PDU session establishment acceptance information from the first network access device.

The embodiment of the present application further provides a chip, where the chip may perform the relevant steps of the first network access device in the foregoing method embodiments.

The chip is used for receiving a non-access stratum (NAS) message sent by terminal equipment through an N1 interface, wherein the non-access stratum message is used for establishing a Protocol Data Unit (PDU) session; the chip is further configured to forward the NAS message to a core network device.

In a possible implementation manner, the chip is further configured to broadcast third information, where the third information is used to indicate that the first network access device is connected to the core network.

Fig. 7 shows a communication apparatus 70 according to an embodiment of the present application, which is used for implementing the above-mentioned terminal device function. The apparatus may be a terminal device or an apparatus for a terminal device. The means for the terminal device may be a system of chips or a chip within the terminal device. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

The communication device may further be configured to implement the function of the first network access device. The apparatus may be the first network access device or an apparatus for the first network access device. The means for the first network access device may be a system-on-chip or a chip within the first network access device. The chip system may be composed of a chip, or may include a chip and other discrete devices.

The communication device 70 includes at least one processor 720, which is configured to implement the data processing function of the terminal device in the method provided in the embodiment of the present application. The apparatus 70 may further include a communication interface 710 for implementing transceiving operations of the terminal device in the method provided by the embodiment of the present application. In embodiments of the present application, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface for communicating with other devices over a transmission medium. For example, the communication interface 710 is used for devices in the apparatus 70 to communicate with other devices. Processor 720 utilizes communication interface 710 to send and receive data and is configured to implement the method described above in the method embodiment of fig. 2.

The apparatus 70 may also include at least one memory 730 for storing program instructions and/or data. Memory 730 is coupled to processor 720. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, and may be in an electrical, mechanical or other form, which is used for information interaction between the devices, units or modules. Processor 720 may cooperate with memory 730. Processor 720 may execute program instructions stored in memory 730. At least one of the at least one memory may be included in the processor.

When the device 70 is powered on, the processor 720 can read the software program stored in the memory 730, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 720 outputs a baseband signal to a radio frequency circuit (not shown) after performing baseband processing on the data to be sent, and the radio frequency circuit sends the radio frequency signal to the outside in the form of electromagnetic waves through an antenna after performing radio frequency processing on the baseband signal. When data is transmitted to the device 70, the rf circuit receives an rf signal through the antenna, converts the rf signal into a baseband signal, and outputs the baseband signal to the processor 720, and the processor 720 converts the baseband signal into data and processes the data.

In another implementation, the rf circuitry and antennas may be provided independently of processor 720 for baseband processing, e.g., in a distributed scenario, the rf circuitry and antennas may be in a remote arrangement independent of the communication device.

The specific connection medium among the communication interface 710, the processor 720 and the memory 730 is not limited in the embodiments of the present application. In fig. 7, the memory 730, the processor 720 and the communication interface 710 are connected by a bus 740, the bus is represented by a thick line in fig. 7, and the connection manner between other components is merely illustrative and not limited. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 7, but that does not indicate only one bus or one type of bus.

The output or reception of the communication interface 710 may be a baseband signal when the apparatus 70 is specifically for a terminal device, for example, when the apparatus 70 is specifically a chip or a chip system. When the apparatus 70 is specifically a terminal device, the output or the reception of the communication interface 710 may be a radio frequency signal. In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, operations, and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The operations of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.

It should be noted that, the communication apparatus may perform relevant steps of the terminal device or the access network device in the foregoing method embodiments, which may specifically refer to implementation manners provided in the foregoing steps, and details are not described herein again.

For each device or product applied to or integrated in the communication device, each module included in the device or product may be implemented in hardware such as a circuit, different modules may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least part of the modules may be implemented in a software program running on a processor integrated in the terminal, and the rest (if any) part of the modules may be implemented in hardware such as a circuit.

As shown in fig. 8, fig. 8 is a schematic structural diagram of a module device according to an embodiment of the present disclosure. The modular apparatus 80 may perform the steps related to the first network access apparatus in the foregoing method embodiments, where the modular apparatus 80 includes: a communication module 801, a power module 802, a memory module 803, and a chip module 804.

The power module 802 is configured to provide power for the module device; the storage module 803 is used for storing data and instructions; the communication module 801 is used for performing module device internal communication or for performing module device and external device communication.

The chip module 804 is configured to: receiving Protocol Data Unit (PDU) session establishment request information from a terminal device, wherein the PDU session establishment request information comprises a Data Network Name (DNN) and a first quality of service (QoS) rule, the first QoS rule is a QoS rule which is determined by a core network device for a second network access device aiming at a first PDU session and is used for meeting the requirement of the terminal device on data service, and the first PDU session is the PDU session established by the second network access device and the core network device; determining a second QoS rule based on the PDU session establishment request information, and establishing a second PDU session between the terminal device and the network indicated by the DNN, wherein the second QoS rule is a rule determined by the first network access device based on the first QoS rule, and is used for the first network access device to allocate resources for the terminal device; and allocating resources for the terminal device based on the second QoS rule.

In a possible implementation manner, before the chip module 804 is configured to receive the PDU session establishment request message from the terminal device, the chip module 804 is further configured to broadcast a first message, where the first message is used to indicate that the first network access device is not connected to the core network.

In a possible implementation manner, the chip module 804 is configured to send second information to the terminal device, where the second information includes the second QoS rule.

As shown in fig. 8, fig. 8 is a schematic structural diagram of a module device according to an embodiment of the present disclosure. The module apparatus 80 can perform the steps related to the terminal apparatus in the foregoing method embodiments, and the module apparatus 80 includes: a communication module 801, a power module 802, a storage module 803, and a chip module 804.

The power module 802 is configured to provide power for the module device; the storage module 803 is used for storing data and instructions; the communication module 801 is used for performing internal communication of a module device, or is used for performing communication between the module device and an external device.

The chip module 804 is configured to: sending Protocol Data Unit (PDU) session establishment request information to a first network access device, wherein the PDU session establishment request information comprises one or more of the following information: a data network name DNN and a first quality of service QoS rule, where the first QoS rule is a QoS rule that the core network device determines for the second network access device for a first PDU session, and is used to meet a requirement of the terminal device for a data service, and the first PDU session is a PDU session established by the second network access device and the core network device; receiving PDU session establishment acceptance information from the first network access equipment, wherein the PDU session establishment acceptance information is used for indicating that the first network access equipment establishes a second PDU session; and sending data to the network indicated by the DNN through the second PDU session based on a first resource, where the first resource is a resource allocated to the terminal device by the first network access device based on a second QoS rule, and the second QoS rule is a QoS rule determined by the first network access device according to the PDU session establishment request information.

In a possible implementation manner, the chip module 804 is further configured to receive first information from the first network access device, where the first information is used to indicate that the first network access device is not connected to a core network device.

In a possible implementation manner, the chip module 804 is further configured to obtain second information from the first network access device, where the second information includes the second QoS rule.

In a possible implementation manner, before the chip module 804 is configured to receive the PDU session establishment acceptance information from the first network access device, the chip module 804 is configured to keep the first PDU session unreleased; after the chip module 804 is configured to receive the PDU session establishment accept message from the first network access device, the chip module 804 is further configured to disconnect the first PDU session.

The chip module 804 is configured to receive a non-access stratum NAS message sent by a terminal device through an N1 interface, where the non-access stratum message is used to establish a protocol data unit PDU session; the chip module 804 is further configured to forward the NAS message to the core network device.

In a possible implementation manner, the chip module 804 is further configured to broadcast third information, where the third information is used to indicate that the first network access device is connected to the core network.

Embodiments of the present application further provide a computer-readable storage medium, in which instructions are stored, and when the computer-readable storage medium is executed on a processor, the method flow of the foregoing method embodiments is implemented.

Embodiments of the present application further provide a computer program product, where when the computer program product runs on a processor, the method flow of the above method embodiments is implemented.

It is noted that, for simplicity of explanation, the foregoing method embodiments are described as a series of acts or combination of acts, but those skilled in the art will appreciate that the present application is not limited by the order of acts, as some acts may, in accordance with the present application, occur in other orders and/or concurrently. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.

The descriptions of the embodiments provided in the present application may be referred to each other, and the descriptions of the embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. For convenience and brevity of description, for example, the functions and operations performed by the devices and apparatuses provided in the embodiments of the present application may refer to the related descriptions of the method embodiments of the present application, and may also be referred to, combined with or cited among the method embodiments and the device embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for session handoff, the method comprising:

the first network access equipment receives Protocol Data Unit (PDU) session establishment request information from terminal equipment, wherein the PDU session establishment request information comprises: a data network name DNN and a first quality of service QoS rule, where the first QoS rule is a QoS rule that a core network device determines for a second network access device for a first PDU session, and is used to meet a requirement of the terminal device for a data service, and the first PDU session is a PDU session established by the second network access device and the core network device;

the first network access device determines a second QoS rule based on the PDU session establishment request information, and establishes a second PDU session between the terminal device and the network indicated by the DNN, wherein the second QoS rule is a rule determined by the first network access device based on the first QoS rule and used for the first network access device to allocate resources to the terminal device;

and the first network access equipment allocates resources for the terminal equipment based on the second QoS rule.

2. The method of claim 1, wherein before the first network access device receives Protocol Data Unit (PDU) session establishment request information from a terminal device, the method further comprises:

the first network access equipment broadcasts first information, and the first information is used for indicating that the first network access equipment is not connected with a core network.

3. The method according to claim 1 or 2, characterized in that the method further comprises:

and the first network access equipment sends second information to the terminal equipment, wherein the second information comprises the second QoS rule.

4. The method according to any of claims 1-3, wherein the PDU session establishment request information further comprises one or more of type of first PDU session, session and service continuity SSC and quality of service QoS request.

5. A method for session handoff, the method comprising:

the terminal equipment sends Protocol Data Unit (PDU) session establishment request information to first network access equipment, wherein the PDU session establishment request information comprises: a data network name DNN and a first quality of service QoS rule, where the first QoS rule is a QoS rule that a core network device determines for a second network access device for a first PDU session, and is used to meet a requirement of the terminal device for a data service, and the first PDU session is a PDU session established by the second network access device and the core network device;

the terminal equipment receives PDU session establishment receiving information from the first network access equipment, wherein the PDU session establishment receiving information is used for indicating that the first network access equipment establishes a second PDU session;

and the terminal equipment sends data to the network indicated by the DNN through the second PDU session based on first resources, wherein the first resources are resources distributed to the terminal equipment by the first network access equipment based on a second QoS rule, and the second QoS rule is the QoS rule determined by the first network access equipment according to the PDU session establishment request information.

6. The method of claim 5, further comprising:

the terminal device receives first information from the first network access device, wherein the first information is used for indicating that the first network access device is not connected with a core network device.

7. The method of claim 5 or 6, further comprising:

the terminal device receives second information from the first network access device, wherein the second information comprises the second QoS rule.

8. The method according to any of claims 5-7, wherein the terminal device keeps the first PDU session unreleased before the terminal device receives PDU session establishment acceptance information from the first network access device;

after the terminal device receives the PDU session setup accept information from the first network access device, the method further comprises:

and the terminal equipment disconnects the first PDU session.

9. The method of claim 5 wherein the PDU session establishment request information further comprises one or more of a type of first PDU session, session and Service Continuity (SSC) and quality of service (QoS) requests.

10. A method for session handoff, the method comprising:

a first network access device receives a non-access stratum (NAS) message sent by a terminal device through an N1 interface, wherein the non-access stratum message is used for establishing a Protocol Data Unit (PDU) session;

the first network access device forwards the NAS message to a core network device.

11. The method of claim 10, wherein before the first network access device receives a NAS message sent by a terminal device over an N1 interface, the method further comprises:

the first network access device broadcasts third information, and the third information is used for indicating that the first network access device is connected with a core network.

12. A communication apparatus, characterized in that the communication apparatus comprises a communication unit and a processing unit, wherein:

the communication unit is configured to receive protocol data unit PDU session establishment request information from a terminal device, where the PDU session establishment request information includes: a first quality of service (QoS) rule of a Data Network Name (DNN), wherein the first QoS rule is a QoS rule determined by a core network device for a second network access device aiming at a first Protocol Data Unit (PDU) session, and is used for meeting the requirement of the terminal device on data service, and the first PDU session is a PDU session established by the second network access device and the core network device;

the processing unit is configured to determine a second QoS rule based on the PDU session establishment request information, and establish a second PDU session between the terminal device and a network indicated by the DNN, where the second QoS rule is a rule determined by the first network access device based on the first QoS rule, and is used for the first network access device to allocate resources to the terminal device;

the processing unit is further configured to allocate resources to the terminal device based on the second QoS rule.

13. A communication apparatus, characterized in that the communication apparatus comprises a communication unit, wherein:

the communication unit is configured to send protocol data unit PDU session establishment request information to a first network access device, where the PDU session establishment request information includes: a data network name DNN and a first quality of service QoS rule, where the first QoS rule is a QoS rule determined by a core network device for a second network access device, and is used to meet a requirement of the terminal device for a data service, and the first PDU session is a PDU session established by the second network access device and the core network device;

the communication unit is further configured to receive PDU session establishment acceptance information from the first network access device, where the PDU session establishment acceptance information is used to indicate that the first network access device has established a second PDU session;

the communication unit is further configured to send data to the network indicated by the DNN through the second PDU session based on a first resource, where the first resource is a resource allocated by the first network access device to the terminal device based on a second QoS rule, and the second QoS rule is a QoS rule determined by the first network access device according to the PDU session establishment request information.

14. A communication apparatus, characterized in that the communication apparatus comprises a communication unit, wherein:

the communication unit is used for receiving a non-access stratum (NAS) message sent by the terminal equipment through an N1 interface, wherein the non-access stratum message is used for establishing a Protocol Data Unit (PDU) session;

the communication unit is further configured to forward the NAS message to a core network device.

15. A chip, characterized in that,

the chip is configured to receive protocol data unit PDU session establishment request information from a terminal device, where the PDU session establishment request information includes: a data network name DNN and a first QoS rule, where the first QoS rule is a QoS rule that a core network device determines for a second network access device for a first PDU session, and is used to meet a requirement of the terminal device for a data service, and the first PDU session is a PDU session established by the second network access device and the core network device;

the chip is further configured to determine a second QoS rule based on the PDU session establishment request information, and establish a second PDU session between the terminal device and the network indicated by the DNN, where the second QoS rule is a rule determined by the first network access device based on the first QoS rule, and is used for the first network access device to allocate resources to the terminal device;

the chip is further configured to allocate resources to the terminal device based on the second QoS rule.

16. A chip, characterized in that,

the chip is configured to send protocol data unit PDU session establishment request information to a first network access device, where the PDU session establishment request information includes: a data network name DNN and a first quality of service QoS rule, where the first QoS rule is a QoS rule determined by the core network device for a second network access device for a first PDU session, and is used to meet a requirement of the terminal device for a data service, and the first PDU session is a PDU session established by the second network access device and the core network device;

the chip is further configured to receive PDU session establishment acceptance information from the first network access device, where the PDU session establishment acceptance information is used to indicate that the first network access device has established a second PDU session;

the chip is further configured to send data to the network indicated by the DNN through the second PDU session based on a first resource, where the first resource is a resource allocated to the terminal device by the first network access device based on a second QoS rule, and the second QoS rule is a QoS rule determined by the first network access device according to the PDU session establishment request information.

17. A chip, characterized in that,

the chip is used for receiving a non-access stratum (NAS) message sent by terminal equipment through an N1 interface, wherein the non-access stratum message is used for establishing a Protocol Data Unit (PDU) session;

the chip is further configured to forward the NAS message to a core network device.

18. The utility model provides a module equipment, its characterized in that, module equipment includes communication module, power module, storage module and chip module, wherein:

the power supply module is used for providing electric energy for the module equipment;

the storage module is used for storing data and instructions;

the communication module is used for carrying out internal communication of module equipment or is used for carrying out communication between the module equipment and external equipment;

the chip module is used for:

receiving Protocol Data Unit (PDU) session establishment request information from a terminal device, wherein the PDU session establishment request information comprises a Data Network Name (DNN) and a first quality of service (QoS) rule, the first QoS rule is a QoS rule which is determined by a core network device for a second network access device aiming at a first PDU session and is used for meeting the requirement of the terminal device on data service, and the first PDU session is established by the second network access device and the core network device;

determining a second QoS rule based on the PDU session establishment request information, and establishing a second PDU session between the terminal device and a network indicated by the DNN, wherein the second QoS rule is a rule determined by the first network access device based on the first QoS rule and used for the first network access device to allocate resources for the terminal device;

and allocating resources for the terminal equipment based on the second QoS rule.

19. The utility model provides a module equipment, its characterized in that, module equipment includes communication module, power module, storage module and chip module, wherein:

the storage module is used for storing data and instructions;

the chip module is used for:

sending Protocol Data Unit (PDU) session establishment request information to a first network access device, wherein the PDU session establishment request information comprises one or more of the following information: a data network name DNN and a first quality of service QoS rule, where the first QoS rule is a QoS rule that is determined by the core network device for a second network access device for a first PDU session, and is used to meet a requirement of the terminal device for a data service, and the first PDU session is a PDU session established by the second network access device and the core network device;

receiving PDU session establishment acceptance information from the first network access equipment, wherein the PDU session establishment acceptance information is used for indicating that the first network access equipment has established a second PDU session;

and sending data to the network indicated by the DNN through the second PDU session based on first resources, wherein the first resources are resources distributed to the terminal equipment by the first network access equipment based on a second QoS rule, and the second QoS rule is the QoS rule determined by the first network access equipment according to the PDU session establishment request information.

20. The utility model provides a module equipment, its characterized in that, module equipment includes communication module, power module, storage module and chip module, wherein:

the storage module is used for storing data and instructions;

the chip module is used for:

receiving a non-access stratum (NAS) message sent by terminal equipment through an N1 interface, wherein the non-access stratum message is used for establishing a Protocol Data Unit (PDU) session;

forwarding the NAS message to a core network device.

21. A communication device comprising a processor, a memory, and a transceiver;

the transceiver is used for receiving channels or signals or sending the channels or signals;

the memory for storing a computer program;

the processor for invoking the computer program from the memory to perform the method of any of claims 1-11.

22. A computer-readable storage medium, in which a computer program is stored which, when run on a communication apparatus, causes the communication apparatus to perform the method of any one of claims 1 to 11.