Method, terminal device and core network device for wireless communication

Abstract

Provided are a method of wireless communication, a terminal device, and a core network device. The method comprises: a first terminal device sending first information to a first core network device, the first information being used to indicate one or more of the following: the first terminal device is a multi-access device; and a multi-access device associated with the first terminal device is a second terminal device. In embodiments of the present application, information (for example, first information) can be sent to the first core network device to help the first core network device determine a terminal device (also referred to as a “multi-access device”) for multi-access communication. Compared with a conventional scheme in which a GUTI is used to identify a terminal device for multi-access communication, the scheme in embodiments of the present application does not require the network to be able to identify a GUTI, which helps to expand the scenarios in which multi-access communication is applicable.

Description

Wireless communication method, terminal device, and core network device Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a wireless communication method, terminal equipment, and core network equipment. Background Art

[0002] In the traditional dual-registration mode, the dual-access registered network can determine the terminal device used for multi-access communication based on the globally unique temporary UE identity (GUTI). However, if you register to multiple networks using the traditional dual-registration mode, the multiple networks may not be able to share information such as the GUTI, resulting in the inability to determine which terminal devices are used for multi-access communication across the multiple networks, limiting the scenarios in which multi-access communication can be applied.

[0003] Summary of the Invention

[0004] The present application provides a wireless communication method, terminal device, and core network device. The following introduces various aspects involved in the present application.

[0005] In a first aspect, a method for wireless communication is provided, including: a first terminal device sends first information to a first core network device, wherein the first information is used to indicate one or more of the following: the first terminal device is a multi-access device; the multi-access device associated with the first terminal device is a second terminal device.

[0006] In a second aspect, a method for wireless communication is provided, including: a first core network device receives first information sent by a first terminal device, the first information being used to indicate one or more of the following: the first terminal device is a multi-access device; the multi-access device associated with the first terminal device is a second terminal device.

[0007] According to a third aspect, a method for wireless communication is provided, including: a third core network device sends fourth information to a fourth core network device, wherein the fourth information is used to indicate that the third terminal device is a multi-access device; and / or the multi-access device associated with the third terminal device is a fourth terminal device; wherein the third core network device provides services for the third terminal device, and the fourth core network device provides services for the fourth terminal device.

[0008] In a fourth aspect, a method for wireless communication is provided, including: a fourth core network device receives fourth information sent by a third core network device, the fourth information being used to indicate that the third terminal device is a multi-access device; and / or the multi-access device associated with the third terminal device is a fourth terminal device; wherein the third core network device provides services for the third terminal device, and the fourth core network device provides services for the fourth terminal device.

[0009] In the fifth aspect, a method for wireless communication is provided, including: a third terminal device sends fifth information to a third core network device, and the fifth information is used to indicate one or more of the following: the third terminal device is a multi-access device; the multi-access device associated with the third terminal device is a fourth terminal device.

[0010] In the sixth aspect, a method for wireless communication is provided, including: a fourth terminal device receives sixth information sent by a fourth core network device, the sixth information carries the identification of a third terminal device, and / or the access network information registered by the third terminal device, wherein the third terminal device is a multi-access device of the fourth terminal device.

[0011] In the seventh aspect, a terminal device is provided, which is a first terminal device, including: a sending unit, used to send first information to a first core network device, and the first information is used to indicate one or more of the following: the first terminal device is a multi-access device; the multi-access device associated with the first terminal device is a second terminal device.

[0012] In the eighth aspect, a core network device is provided, which is a first core network device, including: a receiving unit, used to receive first information sent by a first terminal device, the first information is used to indicate one or more of the following: the first terminal device is a multi-access device; the multi-access device associated with the first terminal device is a second terminal device.

[0013] In the ninth aspect, a core network device is provided, characterized in that the core network device is a third core network device, comprising: a sending unit for sending fourth information to a fourth core network device, the fourth information being used to indicate that the third terminal device is a multi-access device; and / or the multi-access device associated with the third terminal device is a fourth terminal device; wherein the third core network device provides services for the third terminal device, and the fourth core network device provides services for the fourth terminal device.

[0014] In the tenth aspect, a core network device is provided, which is a fourth core network device, including: a receiving unit for receiving fourth information sent by a third core network device, the fourth information being used to indicate that the third terminal device is a multi-access device; and / or the multi-access device associated with the third terminal device is a fourth terminal device; wherein the third core network device provides services for the third terminal device, and the fourth core network device provides services for the fourth terminal device.

[0015] In the eleventh aspect, a terminal device is provided, which is a third terminal device, including: a sending unit, used to send fifth information to a third core network device, and the fifth information is used to indicate one or more of the following: the third terminal device is a multi-access device; the multi-access device associated with the third terminal device is a fourth terminal device.

[0016] In the twelfth aspect, a terminal device is provided, which is a fourth terminal device, including: a receiving unit for receiving sixth information sent by a fourth core network device, the sixth information carries an identifier of a third terminal device, and / or access network information registered by the third terminal device, wherein the third terminal device is a multi-access device of the fourth terminal device.

[0017] In the thirteenth aspect, a terminal device is provided, including a processor, a memory and a communication interface, the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the terminal device executes part or all of the steps performed by the terminal device in the methods of the above aspects.

[0018] In the fourteenth aspect, a core network device is provided, including a processor, a memory, and a transceiver, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the network device executes part or all of the steps executed by the core network device in the methods of the above aspects.

[0019] In a fifteenth aspect, an embodiment of the present application provides a communication system, which includes the above-mentioned terminal device and / or network device. In another possible design, the system may also include other devices that interact with the terminal device or network device in the solution provided in the embodiment of the present application.

[0020] In the sixteenth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and the computer program enables a communication device (for example, a terminal device or a network device) to perform some or all of the steps in the methods of the above aspects.

[0021] In a seventeenth aspect, embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is operable to cause a communication device (e.g., a terminal device or a network device) to perform some or all of the steps of the methods described in each of the above aspects. In some implementations, the computer program product may be a software installation package.

[0022] In the eighteenth aspect, an embodiment of the present application provides a chip, which includes a memory and a processor. The processor can call and run a computer program from the memory to implement some or all of the steps described in the methods of the above aspects.

[0023] In an embodiment of the present application, information (e.g., first information) may be sent to a first core network device to help the first core network device determine a terminal device for multi-access communication (also referred to as a "multi-access device"). Compared to traditional solutions that identify terminal devices for multi-access communication based on a GUTI, the solution in an embodiment of the present application does not require that the network can recognize the GUTI, which helps expand the applicable scenarios for multi-access communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG1 is a wireless communication system 100 used in an embodiment of the present application.

[0025] FIG2 shows a dual UE registration process applicable to an embodiment of the present application.

[0026] 3 and 4 are schematic flow charts of the wireless communication method of embodiment 1 in the embodiments of the present application.

[0027] 5 and 6 are schematic flow charts of a wireless communication method according to embodiment 2 of the present application.

[0028] FIG7 is a schematic diagram of a terminal device according to an embodiment of the present application.

[0029] FIG8 is a schematic diagram of a core network device according to an embodiment of the present application.

[0030] FIG9 is a schematic diagram of a core network device according to an embodiment of the present application.

[0031] Figure 10 is a schematic diagram of the core network device of an embodiment of the present application.

[0032] FIG11 is a schematic diagram of a terminal device according to an embodiment of the present application.

[0033] FIG12 is a schematic diagram of a terminal device according to an embodiment of the present application.

[0034] FIG13 is a schematic structural diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0035] The technical solution in this application will be described below with reference to the accompanying drawings.

[0036] FIG1 is a schematic diagram of a wireless communication system to which an embodiment of the present application is applicable. As shown in Figure 1, the fifth generation (5G) system or new radio (NR) network architecture released by the 3rd Generation Partnership Project (3GPP) standard group includes: terminal equipment (also known as "user equipment (UE)" 101, access network equipment supporting 3GPP technology 102 (including radio access network (RAN) or access network (AN)), user plane function (UPF) network element 105, access and mobility management function (AMF) network element 103, session management function (SMF) network element 104, policy control function (PCF) network element 106, application function (AF) network element 109, data network (DN) 108, network slice selection function (NSSF) 111, authentication server function (AUSF) 110, unified data management function (UDF) network element 111, and the like. Management, UDM)107.

[0037] It should be noted that the network architecture shown in Figure 1 does not constitute a limitation on the 5G network architecture. In specific implementations, the 5G network architecture may include more or fewer network elements than shown, or may combine certain network elements. In addition, in Figure 1, the AN or RAN is represented in the form of (R)AN.

[0038] The terminal device 101 can be user equipment (UE), a terminal, a handheld terminal, a laptop computer, a subscriber unit, a cellular phone, a smart phone, a wireless data card, a personal digital assistant (PDA) computer, a tablet computer, a wireless modem, a handheld device (handheld), a laptop computer, a cordless phone or a wireless local loop (WLL) station, a machine type communication (MTC) terminal, a handheld device with wireless communication function, a computing device, a processing device connected to a wireless modem, a drone, a vehicle-mounted device, a wearable device, a terminal in the Internet of Things, a virtual reality device, a terminal device in a future communication system (e.g., 6G) network, a terminal in a future evolved public land mobile network (PLMN), etc.

[0039] The access network device 102 is an access device that connects terminal devices to the network architecture wirelessly. It is primarily responsible for radio resource management, quality of service (QoS) management, data compression and encryption, etc. on the air interface side. Examples include NodeBs, evolved eNodeBs, base stations in 5G mobile communication systems or new radio (NR) communication systems, and base stations in future mobile communication systems.

[0040] UPF network element 105, AMF network element 103, SMF network element 104, and PCF network element 106 are network elements of the 3GPP core network (referred to as core network elements). UPF network element 105 can be called a user plane function network element, which is mainly responsible for the transmission of user data. The other network elements can be called control plane function network elements, which are mainly responsible for authentication, authorization, registration management, session management, mobility management, and policy control to ensure reliable and stable transmission of user data.

[0041] The UPF network element 105 (or simply "PCF") can be used to forward and receive data from the terminal. For example, the UPF network element can receive service data from the data network and transmit it to the terminal through the access network device; the UPF network element can also receive user data from the terminal through the access network device and forward it to the data network. Among them, the transmission resources allocated and scheduled by the UPF network element for the terminal are managed and controlled by the SMF network element. The bearer between the terminal and the UPF network element may include: a user plane connection between the UPF network element and the access network device, and a channel established between the access network device and the terminal. Among them, the user plane connection is a quality of service (QoS) flow that can be established between the UPF network element and the access network device to transmit data.

[0042] The AMF network element 103 (or "AMF" for short) can be used to manage terminal access to the core network, such as terminal location update, network registration, access control, terminal mobility management, terminal attachment and detachment, etc. The AMF network element can also provide control plane storage resources for the session when providing services for the terminal session to store the session identifier, the SMF network element identifier associated with the session identifier, etc.

[0043] The SMF network element 104 (or "SMF" for short) can be used to select a user plane network element for the terminal, redirect the user plane network element for the terminal, allocate an Internet Protocol (IP) address to the terminal, establish a bearer (also called a session) between the terminal and the UPF network element, modify and release the session, and control QoS.

[0044] The PCF network element 106 (or simply "PCF") is used to provide policies, such as QoS policies, slice selection policies, etc., to the AMF network element 103 and the SMF network element 104.

[0045] The AF network element 109 (or simply "AF") is used to interact with the 3GPP core network elements to support application-affected data routing, access network exposure functions, and interact with the PCF network elements for policy control.

[0046] DN 108 can provide data services to users on networks such as IP Multimedia Service (IMS) and the Internet. DN 108 can contain multiple application servers (ASs) that provide different application services, such as carrier services, Internet access, or third-party services. ASs can implement the functions of AF network elements.

[0047] NSSF 111 is used for network slice selection and supports the following functions: selecting a set of network slice instances to serve the UE; determining the allowed network slice selection assistance information (NSSAI) and, when necessary, determining the mapping to the contracted single-network slice selection assistance information (S-NSSAI); determining the configured NSSAI and, when necessary, determining the mapping to the contracted S-NSSAI; determining the set of AMFs that may be used to query the UE, or determining a list of candidate AMFs based on the configuration.

[0048] AUSF 110 is used to receive the request from AMF 103 to authenticate the terminal, request the key from UDM 107, and then forward the issued key to AMF 103 for authentication processing.

[0049] UDM 107 includes functions such as generation and storage of user contract data, management of authentication data, and supports interaction with external third-party servers.

[0050] It should be understood that each network element in Figure 1 can be a network element in a hardware device, a software function running on dedicated hardware, or a virtualized function instantiated on a platform (e.g., a cloud platform). It should be noted that the network architecture shown in the above figure is only an example of the network elements included in the entire network architecture. In the embodiments of the present application, the network elements included in the entire network architecture are not limited.

[0051] Dual-access registration process

[0052] Figure 2 shows a dual access registration process applicable to an embodiment of the present application. The method shown in Figure 2 includes steps S210 to S230.

[0053] In step S210, the UE attaches and registers to the access network of the LTE evolved packet core (EPC). The UE is assigned a 4G-GUTI identifier by the EPC (a temporary UE ID assigned by the mobility management entity (MME) that can be used to identify the MME and the UE).

[0054] In steps S212 to S218, the UE accesses the 5G network and sends a registration request to the 5G core network. The UE uses the 4G-GUTI identifier to convert it into a 5G-GUTI as its temporary identifier and reports it to the 5G core network.

[0055] In step S220, the AMF registers the UE information with the UDM+ home subscriber server (HSS) and at the same time notifies the network element not to cancel the UE's registration in LTE (through the MME).

[0056] In steps S222 to S226, the registration process of the UE in the 5G access network is completed.

[0057] In steps S228 to S230 , the UE establishes a protocol data unit (PDU) session (5G access network) and releases a public data network (PDN) connection (LTE access network).

[0058] As you can see, the above process applies to dual registration mode for a single UE. Furthermore, the core network requires the UE to report associated access network information (GUTI information includes MME information) during registration. This allows the unified management network element (e.g., UDM+HSS) to simultaneously learn about both access networks when interacting with the network element. This technology relies on the same UE and the GUTI information being associated between the two access networks, requiring both access networks to be operated by the same operator.

[0059] On the other hand, the above dual access registration process is only applicable to dual access scenarios based on 4G network and 5G network.

[0060] On the other hand, the above dual access registration process is only applicable to network switching triggered by terminal mobility.

[0061] Multi-USIM technology (multi-USIM, MUSIM)

[0062] MUSIM technology allows a UE to have two USIM cards, each connected to two access networks. However, the two access networks and the two USIM cards operate independently and are not related to each other, which does not support flexible user switching and traffic diversion between the two access networks.

[0063] As described above, in the traditional dual-access registration mode, the dual-access registered network can determine the terminal device used for multi-access communication based on the GUTI. However, if the traditional dual-access registration mode is used to register with multiple networks, the multiple networks may not be able to share information such as the GUTI containing network element (MME / AMF) information. As a result, it is impossible to determine which terminal devices are used for multi-access communication across multiple networks, which limits the application scenarios of multi-access communication.

[0064] Therefore, in response to the above-mentioned problems, an embodiment of the present application provides a method for wireless communication, in which information (for example, first information or fourth information) can be sent to a first core network device to help the first core network device determine a terminal device for multi-access communication (also referred to as a "multi-access device"). Compared to the traditional solution of identifying terminal devices for multi-access communication based on GUTI, the solution of the embodiment of the present application does not make additional requirements on whether the network can recognize the GUTI, which helps to expand the scenarios applicable to multi-access communication.

[0065] In some implementations, if a multi-access service is established based on the first terminal device and the second terminal device, traffic can be switched and / or diverted between multiple connections established based on the first terminal device and the second terminal device, wherein the first terminal device and the second terminal device can be two USIMs in one terminal device. Compared with the two access networks connected to the two USIM cards in the MUSIM technology and the two USIM cards working independently and having no connection with each other, it helps to improve the flexibility of traffic transmission.

[0066] In some implementations, the first terminal device and the second terminal device may be independent terminal devices. In other implementations, the first terminal device and the second terminal device may be two different universal subscriber identity modules (USIM) in the terminal device. In other implementations, the first terminal device and the second terminal device may be two different subscriber identity modules (SIM) in the terminal device. Of course, in an embodiment of the present application, the first terminal device and the second terminal device may implement two UE functions to access different networks respectively.

[0067] In the embodiments of the present application, the first information may be sent by a terminal device or by other core network devices, which will be introduced below in conjunction with Embodiment 1 and Embodiment 2 respectively.

[0068] Embodiment 1: The first terminal device sends the first information.

[0069] Figure 3 is a schematic flow chart of a wireless communication method according to an embodiment of the present application. The method shown in Figure 3 includes step S310.

[0070] In step S310, the first terminal device sends first information to the first core network device, where the first information is used to indicate one or more of the following: the first terminal device is a multi-access device; the first terminal device supports multi-access services; the first terminal device requests to use multi-access services; the multi-access device associated with the first terminal device is a second terminal device.

[0071] Based on the above introduction, it can be seen that the first information is related to the multi-access service, so the first information can also be called a "multi-access indication". In some scenarios, the multi-access service is also called a dual-split service, and accordingly, the first information can also be called a "dual-split indication".

[0072] Take the example of the first information being used to indicate that the first terminal device is a multi-access device, or in other words, the first information is used to indicate that the first terminal device is one of the multi-access devices.

[0073] In some scenarios, the above-mentioned multi-access device can also be called a "dual steer device". Accordingly, the first information is used to indicate that the first terminal device is a dual steer device, or in other words, the first information is used to indicate that the first terminal device is one of the dual steer devices.

[0074] Take the example of the first information being used to indicate that the first terminal device supports multiple access services, or in other words, the first information is used to indicate that the first terminal device supports the use of multiple access services.

[0075] In some scenarios, the above-mentioned multi-access communication may also be referred to as a dual-flow service. Accordingly, the first information is used to indicate that the first terminal device supports the dual-flow service.

[0076] For example, the first information is used to indicate that the first terminal device requests to use the multiple access service. In other words, the first information is used to indicate that the first terminal device requests to use the multiple access service. In this case, the first information can also be called a "multi-access request."

[0077] In some scenarios, the above-mentioned multi-access communication may also be referred to as a dual-flow service. Accordingly, the first information is used to instruct the first terminal device to request the dual-flow service.

[0078] Taking the example of the first information being used to indicate that the multi-access device associated with the first terminal device is the second terminal device, the embodiments of the present application do not limit the method of indicating the second terminal device. For example, the first information may carry an identifier of the second terminal device to indicate the second terminal device, where the identifier of the second terminal device may include a device identifier of the second terminal device, or user information corresponding to the second terminal device. For another example, the first information may indicate the second terminal device by carrying an association identifier, where the association identifier is used to indicate that the first terminal device and the second terminal device are used for multi-access communication.

[0079] In the embodiments of the present application, the first core network device is not limited. For example, the first core network device may be an AMF. In another example, the first core network device may be an MME. Of course, in the embodiments of the present application, the first core network device may be another network element with similar functions introduced in future communication systems.

[0080] In some implementations, the first information is carried in a registration request of the first terminal device.

[0081] In some implementations, the method further includes: the first core network device sending a response message to the first terminal device in response to the first message, the response message being used to indicate that the first terminal device is allowed (or permitted) to perform the multi-access service. Of course, in the embodiment of the present application, the response message is used to indicate whether the first terminal device is allowed to perform the multi-access service.

[0082] In the embodiments of the present application, the above-mentioned indication method is not limited. In some implementations, the response information can be indicated in an explicit manner. For example, the response information can carry the above-mentioned indication through a single bit. If the value of the bit is a first value, it indicates that the first terminal device is allowed to perform multi-access services. On the contrary, if the value of the bit is a second value, it indicates that the first terminal device is denied multi-access services. The first value is different from the second value. For example, the first value can be 1 and the second value can be 0. For another example, the first value can be 0 and the second value can be 1.

[0083] In other implementations, the response information may indicate in an implicit manner (or indirectly). For example, if the response information carries information of the second terminal device, it can be understood that the response information indirectly indicates that multi-access services are allowed. For another example, if the response information is used to configure a sending policy for the second information for the first terminal device (see the introduction below for details), it can be understood that the response information indirectly indicates that multi-access services are allowed. For another example, if the response information carries an association ID, the response information indirectly indicates that multi-access services are allowed. The association ID is used to indicate that the first terminal device and the second terminal device are associated multi-access devices, or in other words, the association ID is used to indicate that the first terminal device can perform multi-access services with the second terminal device based on the association ID. For example, the association ID can be used to request the establishment of a multi-access session based on the first terminal device and the second terminal device. For another example, the association ID can be used to request data transmission through an associated multi-access session, wherein the multi-access session associated with the association ID can refer to a multi-access session established based on the first terminal device and the second terminal device associated with the association ID.

[0084] In the embodiment of the present application, there is no limitation on the configuration method of the association ID. In some implementations, the association ID may be allocated by the core network device to the terminal device.

[0085] Taking the first information carried in the registration request as an example, the response information of the first information may be a registration response.

[0086] In some implementations, if the first information is used to indicate that the first terminal device is a multi-access device, the above method also includes: the first core network device receives second information sent by the first terminal device, and the second information is used to indicate that the multi-access device associated with the first terminal device is a second terminal device.

[0087] That is to say, in some scenarios, if the first information only indicates that the first terminal device is a multi-access device, the first core network may not be able to determine which terminal device is associated with the first terminal device. For example, the registration process of the second terminal device has not been executed, or the registration process of the second terminal device is being executed and not completed, then the first core network device may not be able to obtain the information of the second terminal device. In this case, the first terminal device can send a second message to the second core network device to indicate that the second terminal device has completed the registration process, or that the second terminal device is in the process of registering, which helps the first core network device obtain the registration status of the second terminal device.

[0088] In some implementations, if the second information is used to indicate that the second terminal device has completed the registration process, the second information includes one or more of the following: an identifier of the second terminal device; access network information registered by the second terminal device, wherein the identifier of the second terminal device can be found in the previous introduction.

[0089] In the embodiment of the present application, the access network information is not limited. For example, the access network information registered by the second terminal device includes one or more of the following: identification information of the access network; access type information of the access network; RAT information of the access network.

[0090] In some implementations, the access type information of the access network may be used to indicate whether the access of the access network is 3GPP access or non-3GPP access, wherein the non-3GPP access may include, for example, Wi-Fi access.

[0091] In some implementations, radio access technology (RAT) information of the access network is used to indicate the RAT type.

[0092] In the embodiments of the present application, the RAT type is not limited. In some implementations, the RAT type may include NR wireless access technology and / or 4G wireless access technology. For example, the RAT type may include one or more of the following: NR terrestrial network wireless access technology, evolved UMTS terrestrial wireless access (evolved universal terrestrial radio access, E-UTRA), NR satellite access technology. Among them, the NR satellite access technology may include one or more of the following: NR geosynchronous orbit (GEO) wireless access technology, NR medium earth orbit (MEO) satellite wireless access technology, NR low earth orbit (LEO) satellite wireless access technology.

[0093] In some implementations, the policy for sending the second information may be configured by the first core network device for the first terminal device. That is, the method further includes: the first core network device sending third information to the first terminal device, the third information being used to configure the first terminal device to send the second information to the first core network device.

[0094] In some implementations, if the first information is carried in the registration request, the third information may be carried in the registration response accordingly. Of course, in the embodiment of the present application, the third information may also be information transmitted separately.

[0095] In some implementations, the first core network device may obtain information about the second terminal device from the second core network device. That is, the method further includes: the first core network device receiving, from the second core network device, subscription information about the first terminal device, where the subscription information indicates that the multi-access device associated with the first terminal device is the second terminal device.

[0096] In some scenarios, if the first information only indicates that the first terminal device is a multi-access device, the first core network device can obtain the subscription information of the first terminal device from the second core network device to determine the second terminal device.

[0097] In other scenarios, if the first information indicates a second terminal device, the first core network device can use the terminal device identifier associated with the first terminal device obtained from the second core network device to verify the second terminal device indicated by the first information. If the terminal device indicated by the second core network device is the same as the terminal device indicated by the first information, the verification is successful. Conversely, if the terminal device indicated by the second core network device is different from the terminal device indicated by the first information, the verification fails.

[0098] In some implementations, if the verification is successful, the first core network device may send response information regarding the first information to the first terminal device to indicate that the first terminal device is allowed to perform multi-access services.

[0099] In other implementations, if the verification fails, the first core network device may send response information to the first terminal device regarding the first information to indicate that the first terminal device is denied multi-access service.

[0100] In some scenarios, the subscription information of the first terminal device may be requested by the first core network device from the second core network device. That is, the above method further includes: the first core network device sending a first request to the second core network device, where the first request is used to request the subscription information. Of course, in this embodiment of the present application, the subscription information of the first terminal device may also be proactively sent by the second core network device to the first core network device.

[0101] In the embodiments of the present application, the second core network device is not limited. For example, the second core network device may be a UDM. For another example, the second core network device may be an HSS. For another example, the second core network device may be a UDM and an HSS (expressed as "UDM+HSS"). Of course, in the embodiments of the present application, the second core network device may be other core network devices based on similar functions.

[0102] The following describes a wireless communication method according to an embodiment of the present application in conjunction with FIG4 , wherein the first terminal device may be UE1, the second terminal device may be UE2, the first core network device may be AMF1 / MME1, and the second core network device may be HSS / UDM. The method shown in FIG4 includes steps S410 to S490.

[0103] In step S410, UE1 sends a registration request to AMF1 / MME1, where the registration request carries first information (also called a multiple access indication).

[0104] In some implementations, the multi-access indication is used to indicate one or more of the following: UE1 is a multi-access device; UE1 supports multi-access services; UE1 requests to use multi-access services; ID of UE2. For the introduction of the first information, please refer to the above and will not be repeated here for the sake of brevity.

[0105] In some implementations, for a UE configured with dual SIM cards, the multiple access indication information indicates that UE1 is one of the multiple access devices. It can be understood that the multiple access indication information is used to indicate that UE1 is one of the SIM cards.

[0106] In some implementations, for a UE configured with dual SIM cards, the ID information of UE2 is the other SIM card in the dual SIM cards.

[0107] In step S420, AMF1 / MME1 sends a first request to UDM (or HSS) to request to query the multi-access subscription information corresponding to UE1, and the subscription information may carry the ID information of UE2.

[0108] In step S430 , the registration process of UE1 is continued.

[0109] In step S440, AMF1 / MME1 sends a registration response to UE1.

[0110] In some implementations, the registration response is used to indicate whether multi-access services are allowed. In an embodiment of the present application, the indication information may be explicit indication information or implicit indication information. For example, if the response information carries relevant information of UE2, it can be understood as allowing multi-access services. For another example, if the response information is used to configure the UE policy of UE1, it can be understood as allowing multi-access services. Among them, the UE policy is used to instruct UE1 to send the second information, that is, when UE1 detects that UE2 has successfully registered or is in the registration process, it reports the second information to AMF1 / MME1. For another example, the registration response can carry an association ID, which can be understood as allowing multi-access services. The association ID is used to indicate that UE1 and UE2 are associated multi-access devices, or in other words, the association ID is used to indicate that UE1 can perform multi-access services with UE2 based on the association ID. For example, the association ID can be used to request the establishment of a multi-access session based on UE1 and UE2. For another example, the association ID may be used to request data transmission through an associated multi-access session, wherein the multi-access session associated with the association ID may refer to a multi-access session established based on UE1 and UE2 associated with the association ID.

[0111] In the embodiments of the present application, there is no limitation on the configuration method of the association ID. In some implementations, the association ID may be allocated by the core network device to the terminal device. For example, the association ID may be allocated by the AMF to the terminal device. For another example, the association ID may be generated by the AMF based on the UE's subscription information from the UDM / HSS query.

[0112] In step S450, UE2 sends a registration request to AMF2 / MME2, which carries the ID of UE2.

[0113] In step S460 , the registration process of UE2 is continued.

[0114] In step S470, AMF2 / MME2 sends a registration response to UE2.

[0115] In step S480, UE1 sends second information to AMF1 / MME1 to instruct UE2 to access.

[0116] In some implementations, the second information may include one or more of the following: UE2 ID information, access network information registered by UE2, such as PLMN ID, access type (3GPP or non-3GPP), and RAT type. The access network information may be, for example, the PLMN ID. The access type indicates whether it is 3GPP access or non-3GPP access. The RAT type indicates whether it corresponds to NR access.

[0117] It should be noted that step S480 can be performed between step S450 and step S470, in which case the second information is used to instruct UE2 to initiate registration. Accordingly, if step S480 can be performed after step S470, in which case the second information is used to instruct UE2 to complete registration.

[0118] In some implementations, the second information may be carried in a registration update request and / or a session establishment request.

[0119] In step S490 , the network side associates UE1 and UE2 and continues to establish a session and associate the user plane.

[0120] In an embodiment of the present application, the UE can be supported to report the first information and notify the network when the associated UE2 initiates registration or completes registration, so that the network can know the registration status of the associated UE2 and perform association on the network side.

[0121] Example 2: Another core network device (hereinafter referred to as "third core network device") sends the fourth information.

[0122] Figure 5 is a schematic flow chart of a wireless communication method according to an embodiment of the present application, wherein a third core network device provides services for a third terminal device, and a fourth core network device provides services for a fourth terminal device. The method shown in Figure 5 includes step S510.

[0123] In some implementations, the third terminal device and the fourth terminal device may be independent terminal devices. In other implementations, the third terminal device and the fourth terminal device may be two different universal subscriber identity modules (USIMs) in the terminal device. In other implementations, the third terminal device and the fourth terminal device may be two different subscriber identity modules (SIMs) in the terminal device. Of course, in an embodiment of the present application, the third terminal device and the fourth terminal device may implement two UE functions to access different networks respectively.

[0124] In step S510, the third core network device sends fourth information to the fourth core network device, and the fourth information is used to indicate one or more of the following: the third terminal device is a multi-access device; the third terminal device supports multi-access services; the third terminal device requests to use multi-access services; the multi-access device associated with the third terminal device is the fourth terminal device.

[0125] As described above, the fourth information is related to the multi-access service, and therefore, the fourth information can also be referred to as a "multi-access indication." In some scenarios, the multi-access service is also referred to as a dual-split service, and accordingly, the fourth information can also be referred to as a "dual-split service indication."

[0126] Take the example where the fourth information is used to indicate that the third terminal device is a multi-access device, or in other words, the fourth information is used to indicate that the third terminal device is one of the multi-access devices.

[0127] In some scenarios, the above-mentioned multi-access device can also be called a "dual-split device". Accordingly, the fourth information is used to indicate that the third terminal device is a dual-split device, or in other words, the fourth information is used to indicate that the third terminal device is one of the dual-split devices.

[0128] Take the fourth information being used to indicate that the third terminal device supports multiple access services as an example, or in other words, the fourth information is used to indicate that the third terminal device supports the use of multiple access services.

[0129] In some scenarios, the above-mentioned multi-access communication may also be referred to as a dual-flow service. Accordingly, the fourth information is used to indicate that the third terminal device supports the dual-flow service.

[0130] For example, the fourth information is used to indicate that the third terminal device requests to use the multi-access service. In other words, the fourth information is used to indicate that the third terminal device requests to use the multi-access service. In this case, the fourth information can also be called a "multi-access request."

[0131] In some scenarios, the above-mentioned multi-access communication can also be called a dual-split service. Accordingly, the fourth information is used to instruct the first terminal device to request the dual-split service.

[0132] Taking the example of the fourth information being used to indicate that the multi-access device associated with the third terminal device is a fourth terminal device, the embodiments of the present application do not limit the method of indicating the fourth terminal device. For example, the fourth information may carry an identifier of the fourth terminal device to indicate the fourth terminal device, where the identifier of the fourth terminal device may include a device identifier of the fourth terminal device, or user information corresponding to the fourth terminal device. For another example, the fourth information may indicate the fourth terminal device by carrying an association identifier, where the association identifier is used to indicate that the third terminal device and the fourth terminal device are used for multi-access communication.

[0133] In the embodiments of the present application, the third core network device and / or the fourth core network device are not limited. For example, the third core network device and / or the fourth core network device may be an AMF. In another example, the third core network device and / or the fourth core network device may be an MME. Of course, in the embodiments of the present application, the third core network device and / or the fourth core network device may be other network elements with similar functions introduced in future communication systems.

[0134] In addition, in the embodiments of the present application, the relationship between the third core network device and the fourth core network device is not limited. In some implementations, the third core network device and the fourth core network device can be the same core network device. In other implementations, the third core network device and the fourth core network device can be different core network devices.

[0135] In an embodiment of the present application, sending the fourth information by the third core network device to the fourth core network device helps to reduce changes to the UE. For example, the third terminal device does not need to perceive the association and registration status of the associated fourth terminal device.

[0136] In some implementations, the method further includes: the fourth core network device sending response information to the third core network device in response to the fourth information, where the response information to the fourth information is used to indicate that the third terminal device and the fourth terminal device are allowed to perform multi-access services. Of course, in the embodiment of the present application, the response information to the fourth information can be used to indicate whether the third terminal device and the fourth terminal device are allowed to perform multi-access services.

[0137] In some scenarios, the fourth information can be understood as a request to the fourth core network device to associate the first terminal device and the second terminal device as a multi-access device. Therefore, the fourth information can also be called an "association request." Correspondingly, the response information to the fourth information can be called an "association response."

[0138] In some implementations, the response information to the fourth information carries one or more of the following: an identifier of the fourth terminal device; context information of the fourth terminal device; and access network information registered by the fourth terminal device. The identifier of the fourth terminal device can be found in the previous introduction to the identifier of the second terminal device.

[0139] In some scenarios, if the fourth core network device sends the context information of the fourth terminal device to the third core network device, it can be understood that the fourth core network device switches the registration management network element of the fourth terminal device to the third core network device, and the third core network device associates the context of the third terminal device with the fourth terminal device.

[0140] In the embodiment of the present application, the access network information is not limited. For example, the access network information registered by the fourth terminal device includes one or more of the following: identification information of the access network; access type information of the access network; RAT information of the access network.

[0141] In some implementations, the access type information of the access network may be used to indicate whether the access of the access network is 3GPP access or non-3GPP access, wherein the non-3GPP access may include, for example, Wi-Fi access.

[0142] In some implementations, RAT information of the access network is used to indicate the RAT type.

[0143] In the embodiments of the present application, the RAT type is not limited. In some implementations, the RAT type may include NR radio access technology and / or 4G radio access technology. For example, the RAT type may include one or more of the following: NR terrestrial network radio access technology, E-UTRA, and NR satellite access technology. Among them, the NR satellite access technology may include one or more of the following: NR GEO radio access technology, NR MEO satellite radio access technology, and NR LEO satellite radio access technology.

[0144] The above describes the interaction between the third core network device and the fourth core network device in the embodiment of the present application. The following describes the interaction between the third core network device and the third terminal device.

[0145] In some implementations, before step S510, the method further includes: receiving, by the third core network device, fifth information sent by the third terminal device, where the fifth information is used to indicate that the third terminal device is a multi-access device and / or that the multi-access device associated with the third terminal device is a fourth terminal device. For an introduction to the fifth information, refer to the introduction to the fourth information above.

[0146] In the example of the present application, the fourth information may be determined based on the fifth information. In some implementations, the fourth information is the same as the fifth information. In this case, it can be understood that after the third core network device receives the fifth information, it forwards the fifth information to the fourth core network device. In other implementations, the fourth information is different from the fifth information, but the fourth information is determined based on the fifth information. For example, the fifth information may only carry the identifier of the third terminal device. In this case, the third core network device may obtain the contract information of the third terminal device from the fifth core network device based on the identifier of the third terminal device to determine the fourth terminal device, and then carry the identifier information of the fourth terminal device in the fourth information and send it to the fourth core network device.

[0147] In some implementations, the fifth information is carried in a registration request of the third terminal device.

[0148] In some implementations, the method further includes: the third core network device sending response information to the third terminal device in response to the fifth information, where the response information to the fifth information is used to indicate that the third terminal device and the fourth terminal device are allowed to perform the multi-access service. Of course, in the embodiment of the present application, the response information is used to indicate whether the third terminal device is allowed to perform the multi-access service.

[0149] Taking the fifth information carried in the registration request as an example, the response information of the fifth information may be a registration response.

[0150] In the embodiments of the present application, the above-mentioned indication method is not limited. In some implementations, the response information can be indicated in an explicit manner. For example, the response information can carry the above-mentioned indication through a single bit. If the value of the bit is a first value, it indicates that the third terminal device is allowed to perform multi-access services. Conversely, if the value of the bit is a second value, it indicates that the third terminal device is denied multi-access services. The first value is different from the second value. For example, the first value can be 1 and the second value can be 0. For another example, the first value can be 0 and the second value can be 1.

[0151] In some other implementations, the response information may be indicated in an implicit manner (or indirectly). For example, if the response information carries information of the fourth terminal device, it can be understood that the response information indirectly indicates that multi-access services are allowed. For another example, if the response information carries an association ID, the response information indirectly indicates that multi-access services are allowed. The association ID is used to indicate that the third terminal device and the fourth terminal device are associated multi-access devices, or in other words, the association ID is used to indicate that the third terminal device can perform multi-access services with the fourth terminal device based on the association ID. For example, the association ID can be used to request the establishment of a multi-access session based on the third terminal device and the fourth terminal device. For another example, the association ID can be used to request data transmission through an associated multi-access session, wherein the multi-access session associated with the association ID can refer to a multi-access session established between the third terminal device and the fourth terminal device associated with the association ID.

[0152] In the embodiment of the present application, there is no limitation on the configuration method of the association ID. In some implementations, the association ID may be allocated by the core network device to the terminal device.

[0153] In some implementations, the third core network device may obtain information about the fourth terminal device from the fifth core network device. That is, the method further includes: the fifth core network device sending subscription information of the third terminal device to the third core network device, where the subscription information indicates that the multi-access device associated with the third terminal device is the fourth terminal device.

[0154] In some scenarios, if the fifth information only indicates that the third terminal device is a multi-access device, the first core network device can obtain the subscription information of the third terminal device from the fifth core network device to determine the fourth terminal device.

[0155] In other scenarios, if the fifth information indicates a fourth terminal device, the first core network device may use the terminal device identifier associated with the third terminal device obtained from the fifth core network device to verify the fourth terminal device indicated by the fifth information. If the terminal device indicated by the fifth core network device is the same as the terminal device indicated by the fifth information, the verification succeeds. Conversely, if the terminal device indicated by the fifth core network device is different from the terminal device indicated by the fifth information, the verification fails.

[0156] In some implementations, if the verification is successful, the third core network device may send response information to the third terminal device regarding the fifth information to indicate that the third terminal device is allowed to perform multi-access services.

[0157] In other implementations, if the verification fails, the third core network device may send response information to the third terminal device regarding the fifth information to indicate that the third terminal device is denied multi-access service.

[0158] In some implementations, the method further includes: the third core network device sending a second request to the fifth core network device, where the second request is used to request the contract information. Of course, in this embodiment of the present application, the contract information of the third terminal device can also be actively sent by the fifth core network device to the third core network device.

[0159] In the embodiment of the present application, the fifth core network device is not limited. For example, the fifth core network device may be a UDM. Of course, in the embodiment of the present application, the fifth core network device may be other core network devices based on similar functions.

[0160] In some implementations, the above method also includes: the fourth core network device sends sixth information to the fourth terminal device, wherein the sixth information carries the identifier of the third terminal device and / or the access network information registered by the third terminal device.

[0161] It should be noted that in the embodiment of the present application, the transmission mechanism of the second information in Example 1 can be combined with each other so that the third core network device can obtain the fourth terminal device. For the sake of brevity, it is not repeated here. The transmission of the second information can be before the transmission of the fourth information.

[0162] The following describes a wireless communication method according to an embodiment of the present application in conjunction with FIG6 , wherein the third terminal device may be UE2, the fourth terminal device may be UE1, the third core network device may be AMF2 / MME2, the fourth core network device may be AMF1 / MME1, and the fifth core network device may be UDM. The method shown in FIG6 includes steps S610 to S630.

[0163] In step S610, UE1 sends a registration request to AMF1 / MME1, where the registration request includes the ID information of UE1.

[0164] In step S612 , the registration process of UE1 is continued.

[0165] In step S614, AMF1 / MME1 sends a registration response to UE1.

[0166] In step S616, UE2 sends a registration request to AMF2 / MME2, and the registration request carries the fifth information.

[0167] In some implementations, the fourth information includes ID information of UE2 and multiple access indication information, wherein the multiple access indication information is used to indicate one or more of the following: requesting multiple access service, ID information of UE2, and UE1 being one of the multiple access devices.

[0168] In some implementations, for a UE configured with dual SIM cards, the multiple access indication information indicates that UE1 is one of the multiple access devices. It can be understood that the multiple access indication information is used to indicate that UE1 is one of the SIM cards.

[0169] In some implementations, for a UE configured with dual SIM cards, the ID information of UE2 is the other SIM card in the dual SIM cards.

[0170] In step S618, AMF2 / MME2 sends a second request to UDM (or HSS) to request to query the multi-access subscription information corresponding to UE2, which may carry the ID information of UE2.

[0171] In step S620 , the registration process of UE2 is continued.

[0172] In step S622, AMF2 / MME2 sends an association request (i.e., the fourth information above) to AMF1 / MME1.

[0173] In some implementations, AMF1 / MME1 may search for AMF1 / MME1 based on the ID information of UE1.

[0174] In some implementations, the fourth information includes ID information of UE1, ID information of UE2, access network information of UE2, access type of UE2, and RAT type of UE2.

[0175] In step S624, AMF1 / MME1 sends an association response (i.e., the response information for the fifth information above) to AMF2 / MME2.

[0176] In some implementations, the response information includes indication information of allowing association between UE1 and UE2, access network information of UE1, access type, and radio access technology type.

[0177] It should be noted that if AMF1 / MME1 is the same as AMF2 / MME2, the above steps S622 and S622 are the execution logic inside the network element. At this time, the network element can associate the context information of UE1 and the context information of UE2 within the device.

[0178] In other implementations, after AMF2 / MME2 initiates a request to AMF1 / MME1, AMF1 / MME1 sends UE1's context information to AMF2 / MME2, that is, the registration management network element of UE1 is switched to AMF2 / MME2, and AMF2 / MME2 associates UE1's context information with UE2's context information within the device.

[0179] In step S626, AMF2 / MME2 sends a registration response to UE2.

[0180] In some implementations, the registration response carries indication information that the multiple access service is permitted.

[0181] In an embodiment of the present application, the indication information may be displayed indication information or implicit indication information. For example, the registration response may carry relevant information of UE1, which can be understood as permission for multi-access service. For another example, the registration response may carry an association ID, which can be understood as permission for multi-access service. The association ID is used to indicate that UE1 and UE2 are associated multi-access devices, or in other words, the association ID is used to indicate that UE1 can perform multi-access services with UE2 based on the association ID. For example, the association ID can be used to request the establishment of a multi-access session based on UE1 and UE2. For another example, the association ID can be used to request data transmission through an associated multi-access session, wherein the multi-access session associated with the association ID can refer to a multi-access session established based on UE1 and UE2 associated with the association ID.

[0182] In the embodiment of the present application, there is no limitation on the configuration method of the association ID. In some implementations, the association ID may be allocated by the core network device to the terminal device.

[0183] In step S628, AMF1 / MME1 sends sixth information to UE1 (this step is optional).

[0184] In some implementations, the sixth information includes ID information of UE2, access network information registered by UE2, access type, and RAT type.

[0185] In step S630 , the network side associates UE1 and UE2 and continues to establish a session and associate the user plane.

[0186] In the embodiment of the present application, the main enhancement is to the processing logic on the core network side, with minor changes to the UE, and the UE does not need to be able to perceive the association and registration status of the two SIM cards.

[0187] The method embodiment of the present application is described in detail above in conjunction with Figures 1 to 6 , and the device embodiment of the present application is described in detail below in conjunction with Figures 7 to 13 . It should be understood that the description of the method embodiment corresponds to the description of the device embodiment, and therefore, for portions not described in detail, reference can be made to the above method embodiment.

[0188] FIG7 is a schematic diagram of a terminal device according to an embodiment of the present application. The terminal device 700 shown in FIG7 is a first terminal device, and the terminal device 700 includes a sending unit 710 .

[0189] The sending unit 710 is used to send first information to the first core network device, where the first information is used to indicate one or more of the following: the first terminal device is a multi-access device; the multi-access device associated with the first terminal device is a second terminal device.

[0190] In some implementations, the first information is carried in a registration request of the first terminal device.

[0191] In some implementations, the terminal device further includes: a first receiving unit, configured to receive response information sent by the first core network device to the first information, wherein the response information is used to indicate that the first terminal device is allowed to perform multi-access services.

[0192] In some implementations, if the first information is used to indicate that the first terminal device is a multi-access device, the terminal device also includes: the sending unit, used to send second information to the first core network device, and the second information is used to indicate that the multi-access device associated with the first terminal device is a second terminal device.

[0193] In some implementations, the second information is further used to indicate that the second terminal device has completed the registration process, or that the second terminal device is in the process of registering.

[0194] In some implementations, if the second information is used to indicate that the second terminal device has completed the registration process, the second information includes one or more of the following: an identifier of the second terminal device; and access network information registered by the second terminal device.

[0195] In some implementations, the terminal device further includes: a second receiving unit, configured to receive third information sent by the first core network device, wherein the third information is used to configure the first terminal device to send the second information to the first core network device.

[0196] FIG8 is a schematic diagram of a core network device according to an embodiment of the present application. The core network device 800 shown in FIG8 is a first core network device, and includes a receiving unit 810 .

[0197] The receiving unit 810 is used to receive first information sent by a first terminal device, where the first information is used to indicate one or more of the following: the first terminal device is a multi-access device; the multi-access device associated with the first terminal device is a second terminal device.

[0198] In some implementations, the first information is carried in a registration request of the first terminal device.

[0199] In some implementations, the core network device further includes: a first sending unit, configured to send response information regarding the first information to the first terminal device, wherein the response information is used to indicate that the first terminal device is allowed to perform multi-access services.

[0200] In some implementations, if the first information is used to indicate that the first terminal device is a multi-access device, the receiving unit is used to receive second information sent by the first terminal device, and the second information is used to indicate that the multi-access device associated with the first terminal device is a second terminal device.

[0201] In some implementations, the second information is further used to indicate that the second terminal device has completed the registration process, or that the second terminal device is in the process of registering.

[0202] In some implementations, if the second information is used to indicate that the second terminal device has completed the registration process, the second information includes one or more of the following: an identifier of the second terminal device; and access network information registered by the second terminal device.

[0203] In some implementations, the access network information registered by the second terminal device includes one or more of the following: identification information of the access network; access type information of the access network; and radio access technology RAT information of the access network.

[0204] In some implementations, the core network device further includes: a second sending unit, configured to send third information to the first terminal device, wherein the third information is used to configure the first terminal device to send the second information to the first core network device.

[0205] In some implementations, the receiving unit is used to receive the subscription information of the first terminal device sent by the second core network device, and the subscription information is used to indicate that the multi-access device associated with the first terminal device is the second terminal device.

[0206] In some implementations, the core network device further includes: a third sending unit, configured to send a first request to the second core network device, wherein the first request is used to request the subscription information.

[0207] FIG9 is a schematic diagram of a core network device according to an embodiment of the present application. The core network device 900 shown in FIG9 is a third core network device, and includes a sending unit 910 .

[0208] The sending unit 910 is used to send fourth information to the fourth core network device, where the fourth information is used to indicate that the third terminal device is a multi-access device; and / or the multi-access device associated with the third terminal device is a fourth terminal device; wherein the third core network device provides services for the third terminal device, and the fourth core network device provides services for the fourth terminal device.

[0209] In some implementations, the core network device further includes: a first receiving unit, configured to receive response information sent by the fourth core network device to the fourth information, wherein the response information to the fourth information is used to indicate that the third terminal device and the fourth terminal device are allowed to perform multi-access services.

[0210] In some implementations, the response information to the fourth information carries one or more of the following: an identifier of the fourth terminal device; context information of the fourth terminal device; and access network information registered by the fourth terminal device.

[0211] In some implementations, the access network information registered by the fourth terminal device includes one or more of the following: identification information of the access network; access type information of the access network; and radio access technology RAT information of the access network.

[0212] In some implementations, the core network device further includes: a second receiving unit, configured to receive the contract information of the third terminal device sent by the fifth core network device, wherein the contract information is used to indicate that the multi-access device associated with the third terminal device is the fourth terminal device.

[0213] In some implementations, the sending unit is used to send a second request to the fifth core network device, where the second request is used to request the contract information.

[0214] In some implementations, the core network device also includes: a third receiving unit, used to receive fifth information sent by the third terminal device, and the fifth information is used to indicate that the third terminal device is a multi-access device, and / or the multi-access device associated with the third terminal device is a fourth terminal device.

[0215] In some implementations, the fifth information is carried in a registration request of the third terminal device.

[0216] In some implementations, the sending unit is used to send response information to the third terminal device for the fifth information, where the response information to the fifth information is used to indicate that the third terminal device is allowed to perform multi-access service with the fourth terminal device.

[0217] FIG10 is a schematic diagram of a core network device according to an embodiment of the present application. The core network device 1000 shown in FIG10 is a fourth core network device, and includes: a receiving unit 1010 .

[0218] Receiving unit 1010 is used to receive fourth information sent by a third core network device, where the fourth information is used to indicate that the third terminal device is a multi-access device; and / or the multi-access device associated with the third terminal device is a fourth terminal device; wherein the third core network device provides services for the third terminal device, and the fourth core network device provides services for the fourth terminal device.

[0219] In some implementations, the core network device further includes: a first sending unit, configured to send response information regarding the fourth information to the third core network device, wherein the response information regarding the fourth information is used to indicate that the third terminal device and the fourth terminal device are allowed to perform multi-access services.

[0220] In some implementations, the response information to the fourth information carries one or more of the following: an identifier of the fourth terminal device; context information of the fourth terminal device; and access network information registered by the fourth terminal device.

[0221] In some implementations, the access network information registered by the fourth terminal device includes one or more of the following: identification information of the access network; access type information of the access network; and radio access technology RAT information of the access network.

[0222] In some implementations, the core network device further includes: a second sending unit, configured to send sixth information to the fourth terminal device, wherein the sixth information carries an identifier of the third terminal device and / or access network information registered by the third terminal device.

[0223] In some implementations, the access network information registered by the third terminal device includes one or more of the following: identification information of the access network; access type information of the access network; and radio access technology RAT information of the access network.

[0224] FIG11 is a schematic diagram of a terminal device according to an embodiment of the present application. The terminal device 1100 shown in FIG11 is a third terminal device, and the terminal device 1100 includes a sending unit 1110 .

[0225] The sending unit 1110 is used to send fifth information to the third core network device, where the fifth information is used to indicate one or more of the following: the third terminal device is a multi-access device; the multi-access device associated with the third terminal device is a fourth terminal device.

[0226] In some implementations, the fifth information is carried in a registration request of the third terminal device.

[0227] In some implementations, the terminal device also includes: the third terminal device receives response information to the fifth information sent by the third core network device, and the response information to the fifth information is used to indicate that the third terminal device and the fourth terminal device are allowed to perform multi-access services; or the response information to the fifth information is used to indicate the fourth terminal device.

[0228] FIG12 is a schematic diagram of a terminal device according to an embodiment of the present application. The terminal device 1200 shown in FIG12 is a fourth terminal device, and the terminal device 1200 includes: a receiving unit 1210 .

[0229] Receiving unit 1210 is used to receive the sixth information sent by the fourth core network device, where the sixth information carries the identification of the third terminal device and / or the access network information registered by the third terminal device, wherein the third terminal device is a multi-access device of the fourth terminal device.

[0230] In some implementations, the access network information registered by the third terminal device includes one or more of the following: identification information of the access network; access type information of the access network; and radio access technology RAT information of the access network.

[0231] Figure 13 is a schematic block diagram of a communication device according to an embodiment of the present application. The dashed lines in Figure 13 indicate that the unit or module is optional. Apparatus 1300 may be used to implement the method described in the above method embodiment. Apparatus 1300 may be a chip, a terminal device, or a network device.

[0232] The device 1300 may include one or more processors 1310. The processor 1310 may support the device 1300 to implement the method described in the above method embodiment. The processor 1310 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0233] The apparatus 1300 may further include one or more memories 1320. The memories 1320 store programs that can be executed by the processor 1310, causing the processor 1310 to perform the methods described in the above method embodiments. The memories 1320 may be independent of the processor 1310 or integrated into the processor 1310.

[0234] The apparatus 1300 may further include a transceiver 1330. The processor 1310 may communicate with other devices or chips via the transceiver 1330. For example, the processor 1310 may transmit and receive data with other devices or chips via the transceiver 1330.

[0235] The present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to a terminal or network device provided in the present application, and the program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0236] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal or network device provided in the present application, and the program causes a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0237] The embodiments of the present application also provide a computer program. The computer program can be applied to the terminal or network device provided in the embodiments of the present application, and the computer program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0238] It should be understood that in the embodiments of the present application, information transmission and reception between the terminal device and the core network device can be performed through the access network device, that is, the terminal device communicates with the core network device through the access network device. For example, the terminal device can communicate with the first core network device through the access network.

[0239] In addition, the terms "system" and "network" can be used interchangeably in this application. In addition, the terms used in this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The terms "first", "second", "third", and "fourth" in the specification and claims of this application and the accompanying drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0240] In the embodiments of this application, the term "indication" may refer to a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" may refer to a direct indication of B, e.g., B can obtain information through A; it may refer to an indirect indication of B, e.g., A indicates C, e.g., B can obtain information through C; or it may refer to an association between A and B.

[0241] In the embodiment of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0242] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.

[0243] In the embodiments of the present application, "pre-definition" or "pre-configuration" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device and a network device). The present application does not limit the specific implementation method. For example, pre-definition may refer to information defined in a protocol.

[0244] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communications field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0245] In the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0246] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0247] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0248] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0249] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0250] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0251] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A method for wireless communication, characterized in that, Including: A first terminal device sends first information to a first core network device, and the first information is used to indicate one or more of the following: The first terminal device is a multi-access device; The multi-access device associated with the first terminal device is a second terminal device.

2. The method according to claim 1, characterized in that The first information is carried in a registration request of the first terminal device.

3. The method according to claim 1 or 2, characterized in that, The method further includes: The first terminal device receives response information sent by the first core network device for the first information, and the response information is used to indicate that the first terminal device is allowed to perform multi-access services.

4. The method according to any one of claims 1 to 3, characterized in that, If the first information is used to indicate that the first terminal device is a multi-access device, the method further includes: The first terminal device sends second information to the first core network device, and the second information is used to indicate that the multi-access device associated with the first terminal device is a second terminal device.

5. The method according to claim 4, wherein The second information is further used to indicate that the second terminal device has completed the registration process, or the second terminal device is in the process of registering.

6. The method according to claim 5, wherein If the second information is used to indicate that the second terminal device has completed the registration process, the second information includes one or more of the following: The identifier of the second terminal device; The access network information registered by the second terminal device.

7. The method according to any one of claims 4-6, characterized in that The method further includes: The first terminal device receives third information sent by the first core network device, and the third information is used to configure the first terminal device to send the second information to the first core network device.

8. A method for wireless communication, characterized in that, Including: A first core network device receives first information sent by a first terminal device, and the first information is used to indicate one or more of the following: The first terminal device is a multi-access device; The multi-access device associated with the first terminal device is a second terminal device.

9. The method according to claim 8, wherein The first information is carried in a registration request of the first terminal device.

10. The method according to claim 8 or 9, characterized in that, The method further includes: The first core network device sends response information for the first information to the first terminal device, and the response information is used to indicate that the first terminal device is allowed to perform multi-access services.

11. The method according to any one of claims 8 to 10, characterized in that, If the first information is used to indicate that the first terminal device is a multi-access device, the method further includes: The first core network device receives second information sent by the first terminal device, and the second information is used to indicate that the multi-access device associated with the first terminal device is a second terminal device.

12. The method according to claim 11, wherein The second information is further used to indicate that the second terminal device has completed the registration process, or the second terminal device is in the process of registering.

13. The method according to claim 12, characterized in that, If the second information is used to indicate that the second terminal device has completed the registration process, the second information includes one or more of the following: The identifier of the second terminal device; The access network information registered by the second terminal device.

14. The method according to claim 13, wherein The access network information registered by the second terminal device includes one or more of the following: The identifier information of the access network; The access type information of the access network; The radio access technology (RAT) information of the access network.

15. The method according to any one of claims 11-14, characterized in that, The method further includes: The first core network device sends third information to the first terminal device, and the third information is used to configure the first terminal device to send the second information to the first core network device.

16. The method according to any one of claims 8-15, characterized in that The method further includes: The first core network device receives the subscription information of the first terminal device sent by the second core network device, and the subscription information is used to indicate that the multi-access device associated with the first terminal device is the second terminal device.

17. The method according to claim 16, wherein The method further includes: The first core network device sends a first request to the second core network device, and the first request is used to request the subscription information.

18. A method for wireless communication, characterized in that, It includes: The third core network device sends fourth information to the fourth core network device, and the fourth information is used to indicate that the third terminal device is a multi-access device; and / or the multi-access device associated with the third terminal device is the fourth terminal device; Wherein, the third core network device provides services for the third terminal device, and the fourth core network device provides services for the fourth terminal device.

19. The method according to claim 18, wherein The method further includes: The third core network device receives the response information for the fourth information sent by the fourth core network device, and the response information for the fourth information is used to indicate that the third terminal device is allowed to perform multi-access services with the fourth terminal device.

20. The method according to claim 19, wherein The response information for the fourth information carries one or more of the following: The identifier of the fourth terminal device; The context information of the fourth terminal device; The access network information registered by the fourth terminal device.

21. The method according to claim 20, wherein The access network information registered by the fourth terminal device includes one or more of the following: The identifier information of the access network; The access type information of the access network; The radio access technology (RAT) information of the access network.

22. The method according to any one of claims 18-21, characterized in that, The method further includes: The third core network device receives the subscription information of the third terminal device sent by the fifth core network device, and the subscription information is used to indicate that the multi-access device associated with the third terminal device is the fourth terminal device.

23. The method according to claim 22, characterized in that The method further includes: The third core network device sends a second request to the fifth core network device, and the second request is used to request the subscription information.

24. The method according to any one of claims 18-23, characterized in that, Before the third core network device sends the fourth information to the fourth core network device, the method further includes: The third core network device receives fifth information sent by the third terminal device, and the fifth information is used to indicate that the third terminal device is a multi-access device, and / or the multi-access device associated with the third terminal device is the fourth terminal device.

25. The method according to claim 24, wherein The fifth information is carried in the registration request of the third terminal device.

26. The method according to claim 24 or 25, characterized in that, The method further includes: The third core network device sends response information for the fifth information to the third terminal device, and the response information for the fifth information is used to indicate that the third terminal device is allowed to perform multi-access services with the fourth terminal device.

27. A method for wireless communication, characterized in that, It includes: The fourth core network device receives the fourth information sent by the third core network device, and the fourth information is used to indicate that the third terminal device is a multi-access device; and / or the multi-access device associated with the third terminal device is the fourth terminal device; Wherein, the third core network device provides services for the third terminal device, and the fourth core network device provides services for the fourth terminal device.

28. The method according to claim 27, wherein The method further includes: The fourth core network device sends response information for the fourth information to the third core network device, and the response information for the fourth information is used to indicate that the third terminal device is allowed to perform multi-access service with the fourth terminal device.

29. The method according to claim 28, wherein The response information for the fourth information carries one or more of the following: The identifier of the fourth terminal device; The context information of the fourth terminal device; The access network information registered by the fourth terminal device.

30. The method according to claim 29, wherein The access network information registered by the fourth terminal device includes one or more of the following: The identifier information of the access network; The access type information of the access network; The radio access technology (RAT) information of the access network.

31. The method according to any one of claims 27 - 30, characterized in that, The method further includes: The fourth core network device sends sixth information to the fourth terminal device, and the sixth information carries the identifier of the third terminal device and / or the access network information registered by the third terminal device.

32. The method according to claim 31, wherein The access network information registered by the third terminal device includes one or more of the following: The identifier information of the access network; The access type information of the access network; The radio access technology (RAT) information of the access network.

33. A method for wireless communication, characterized in that, It includes: The third terminal device sends fifth information to the third core network device, and the fifth information is used to indicate one or more of the following: The third terminal device is a multi-access device; The multi-access device associated with the third terminal device is the fourth terminal device.

34. The method according to claim 33, wherein The fifth information is carried in the registration request of the third terminal device.

35. The method according to claim 33 or 34, characterized in that, The method further includes: The third terminal device receives the response information for the fifth information sent by the third core network device, and the response information for the fifth information is used to indicate that the third terminal device is allowed to perform multi-access service with the fourth terminal device; or The response information for the fifth information is used to indicate the fourth terminal device.

36. A method for wireless communication, characterized in that, It includes: The fourth terminal device receives the sixth information sent by the fourth core network device, and the sixth information carries the identifier of the third terminal device and / or the access network information registered by the third terminal device, wherein the third terminal device is a multi-access device of the fourth terminal device.

37. The method according to claim 36, wherein The access network information registered by the third terminal device includes one or more of the following: The identifier information of the access network; The access type information of the access network; The radio access technology (RAT) information of the access network.

38. A terminal device, characterized in that, The terminal device is the first terminal device, and it includes: A sending unit, configured to send first information to the first core network device, and the first information is used to indicate one or more of the following: The first terminal device is a multi-access device; The multi-access device associated with the first terminal device is the second terminal device.

39. The terminal device according to claim 38, characterized in that, The first information is carried in the registration request of the first terminal device.

40. The terminal device according to claim 38 or 39, characterized in that, The terminal device further includes: A first receiving unit, configured to receive the response information for the first information sent by the first core network device, and the response information is used to indicate that the first terminal device is allowed to perform multi-access service.

41. The terminal device according to any one of claims 38-40, characterized in that, If the first information is used to indicate that the first terminal device is a multi-access device, the terminal device further includes: The sending unit is configured to send second information to the first core network device, where the second information is used to indicate that the multi-access device associated with the first terminal device is the second terminal device.

42. The terminal device according to claim 41, wherein, The second information is further used to indicate that the second terminal device has completed the registration process, or the second terminal device is in the process of registering.

43. The terminal device according to claim 42, characterized in that, If the second information is used to indicate that the second terminal device has completed the registration process, the second information includes one or more of the following: The identifier of the second terminal device; The access network information registered by the second terminal device.

44. The terminal device according to any one of claims 41-43, characterized in that, The terminal device further includes: A second receiving unit, configured to receive third information sent by the first core network device, where the third information is used to configure the first terminal device to send the second information to the first core network device.

45. A core network device, characterized in that, The core network device is a first core network device, and includes: A receiving unit, configured to receive first information sent by a first terminal device, where the first information is used to indicate one or more of the following: The first terminal device is a multi-access device; The multi-access device associated with the first terminal device is the second terminal device.

46. The core network device according to claim 45, wherein, The first information is carried in the registration request of the first terminal device.

47. The core network device according to claim 45 or 46, characterized in that, The core network device further includes: A first sending unit, configured to send response information for the first information to the first terminal device, where the response information is used to indicate that the first terminal device is allowed to perform multi-access services.

48. The core network device according to any one of claims 45 to 47, characterized in that, If the first information is used to indicate that the first terminal device is a multi-access device, the receiving unit is configured to: Receive second information sent by the first terminal device, where the second information is used to indicate that the multi-access device associated with the first terminal device is the second terminal device.

49. The core network device according to claim 48, characterized in that, The second information is further used to indicate that the second terminal device has completed the registration process, or the second terminal device is in the process of registering.

50. The core network device according to claim 49, characterized in that, If the second information is used to indicate that the second terminal device has completed the registration process, the second information includes one or more of the following: The identifier of the second terminal device; The access network information registered by the second terminal device.

51. The core network device according to claim 50, characterized in that, The access network information registered by the second terminal device includes one or more of the following: The identifier information of the access network; The access type information of the access network; The radio access technology (RAT) information of the access network.

52. The core network device according to any one of claims 48-51, characterized in that, The core network device further includes: A second sending unit, configured to send third information to the first terminal device, where the third information is used to configure the first terminal device to send the second information to the first core network device.

53. The core network device according to any one of claims 45-52, characterized in that, The receiving unit is configured to receive the subscription information of the first terminal device sent by the second core network device, where the subscription information is used to indicate that the multi-access device associated with the first terminal device is the second terminal device.

54. The core network device according to claim 53, wherein The core network device further includes: A third sending unit, configured to send a first request to the second core network device, where the first request is used to request the subscription information.

55. A core network device, characterized in that, The core network device is a third core network device, and includes: A sending unit, configured to send fourth information to a fourth core network device, where the fourth information is used to indicate that the third terminal device is a multi-access device; and / or the multi-access device associated with the third terminal device is a fourth terminal device; Wherein, the third core network device provides services for the third terminal device, and the fourth core network device provides services for the fourth terminal device. device.

56. The core network device according to claim 55, characterized in that, The core network device further includes: A first receiving unit, configured to receive response information for the fourth information sent by the fourth core network device, where the response information for the fourth information is used to indicate that multi-access services are allowed between the third terminal device and the fourth terminal device.

57. The core network device according to claim 56, characterized in that, The response information for the fourth information carries one or more of the following: The identifier of the fourth terminal device; The context information of the fourth terminal device; The access network information registered by the fourth terminal device.

58. The core network device according to claim 57, wherein The access network information registered by the fourth terminal device includes one or more of the following: The identifier information of the access network; The access type information of the access network; The radio access technology (RAT) information of the access network.

59. The core network device according to any one of claims 55-58, characterized in that, The core network device further includes: A second receiving unit, configured to receive the subscription information of the third terminal device sent by a fifth core network device, where the subscription information is used to indicate that the multi-access device associated with the third terminal device is the fourth terminal device.

60. The core network device according to claim 59, wherein, The sending unit is configured to: Send a second request to the fifth core network device, where the second request is used to request the subscription information.

61. The core network device according to any one of claims 55-60, characterized in that, The core network device further includes: A third receiving unit, configured to receive fifth information sent by the third terminal device, where the fifth information is used to indicate that the third terminal device is a multi-access device, and / or the multi-access device associated with the third terminal device is a fourth terminal device.

62. The core network device according to claim 61, characterized in that, The fifth information is carried in the registration request of the third terminal device.

63. The core network device according to claim 61 or 62, characterized in that, The sending unit is configured to: Send response information for the fifth information to the third terminal device, where the response information for the fifth information is used to indicate that multi-access services are allowed between the third terminal device and the fourth terminal device.

64. A core network device, characterized in that, The core network device is a fourth core network device, and includes: A receiving unit, configured to receive fourth information sent by a third core network device, where the fourth information is used to indicate that the third terminal device is a multi-access device; and / or the multi-access device associated with the third terminal device is a fourth terminal device; Wherein, the third core network device provides services for the third terminal device, and the fourth core network device provides services for the fourth terminal device.

65. The core network device according to claim 64, wherein, The core network device further includes: A first sending unit, configured to send response information for the fourth information to the third core network device, where the response information for the fourth information is used to indicate that multi-access services are allowed between the third terminal device and the fourth terminal device.

66. The core network device according to claim 65, characterized in that, The response information for the fourth information carries one or more of the following: The identifier of the fourth terminal device; The context information of the fourth terminal device; The access network information registered by the fourth terminal device.

67. The core network device according to claim 66, wherein The access network information registered by the fourth terminal device includes one or more of the following: The identification information of the access network; The access type information of the access network; The radio access technology (RAT) information of the access network.

68. The core network device according to any one of claims 64-67, characterized in that, The core network device further includes: A second sending unit, configured to send sixth information to the fourth terminal device, where the sixth information carries the identifier of the third terminal device, and / or the access network information registered by the third terminal device. The access network information registered by the third terminal device includes one or more of the following:

69. The core network device according to claim 68, characterized in that, The identification information of the access network; The access type information of the access network; The radio access technology (RAT) information of the access network. The terminal device is the third terminal device, and includes:

70. A terminal device, characterized in that, A sending unit, configured to send fifth information to a third core network device, where the fifth information is used to indicate one or more of the following: The third terminal device is a multi-access device; The multi-access device associated with the third terminal device is the fourth terminal device. The fifth information is carried in the registration request of the third terminal device.

71. The terminal device according to claim 70, characterized in that, The terminal device further includes:

72. The terminal device according to claim 70 or 71, characterized in that, The third terminal device receives response information for the fifth information sent by the third core network device, where the response information for the fifth information is used to indicate that the third terminal device is allowed to perform multi-access services with the fourth terminal device; or The response information for the fifth information is used to indicate the fourth terminal device. The terminal device is the fourth terminal device, and includes:

73. A terminal device, characterized in that, A receiving unit, configured to receive sixth information sent by a fourth core network device, where the sixth information carries the identifier of the third terminal device, and / or the access network information registered by the third terminal device, wherein the third terminal device is a multi-access device of the fourth terminal device. The access network information registered by the third terminal device includes one or more of the following:

74. The terminal device according to claim 73, characterized in that, The identification information of the access network; The access type information of the access network; The radio access technology (RAT) information of the access network. It includes a transceiver, a memory, and a processor. The memory is used to store a program, and the processor is used to call the program in the memory and control the transceiver to receive or send signals, so that the terminal device executes the method according to any one of claims 1-8, 33-35, and 36-37.

75. A terminal device, characterized in that, It includes a transceiver, a memory, and a processor. The memory is used to store a program, and the processor is used to call the program in the memory and control the transceiver to receive or send signals, so that the core network device executes the method according to any one of claims 9-32.

76. A core network device, characterized in that, It includes a processor, configured to call a program from a memory, so that the device executes the method according to any one of claims 1-37.

77. A device, characterized in that, It includes a processor, configured to call a program from a memory, such that the device installed with the chip executes the method according to any one of claims 1-37.

78. A chip, characterized in that, A program is stored thereon, and the program causes a computer to execute the method according to any one of claims 1-37.

79. A computer-readable storage medium, characterized in that, It includes a program, and the program causes a computer to execute the method according to any one of claims 1-37.

80. A computer program product, characterized in that, ​ 81. A computer program, characterized in that, The computer program causes a computer to execute the method according to any one of claims 1 to 37.

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