Wireless communication method, terminal device and core network device

Abstract

Provided are a wireless communication method, a terminal device, and a core network device. The method comprises: the terminal device sends first information to a first core network device, wherein the first information is used for determining a first access mode and a second access mode for multi-access communication of the terminal device. In the embodiments of the present application, the terminal device can send the first information to the first core network device, so that the first core network device determines, on the basis of the first information, the first access mode and the second access mode related to multi-access communication, thereby improving the rationality of the network device performing multi-access communication related configuration on the terminal device.

Description

Wireless communication method, terminal equipment, and core network equipment 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 multi-access communications, access traffic steering, switching, and splitting (ATSSS) technology is introduced to support simultaneous access to 3rd Generation Partnership Project (3GPP) access technologies and non-3GPP access technologies (e.g., wireless fidelity (Wi-Fi)), and to perform traffic steering, switching, and splitting between the two. With technological development, other types of multi-access communication technologies have been introduced, such as multi-access communication based on different types of 3GPP access technologies. However, how to implement these other types of multi-access communication technologies is currently unspecified.

[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 of the present application.

[0005] In a first aspect, a method for wireless communication is provided, including: a terminal device sends first information to a first core network device, wherein the first information is used to determine a first access method and a second access method for multi-access communication of the 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 terminal device, wherein the first information is used to determine whether a first access method and a second access method are used for multi-access communication of the terminal device.

[0007] According to a third aspect, a method for wireless communication is provided, including: a second core network device receives third information sent by a first core network device, wherein the third information is used to determine whether a first access method and a second access method are used for multi-access communication of the terminal device.

[0008] In a fourth aspect, a terminal device is provided, comprising: a sending unit, configured to send first information to a first core network device, wherein the first information is used to determine whether a first access method and a second access method are used for multi-access communication of the terminal device.

[0009] In the fifth aspect, a core network device is provided, which is a first core network device, including: a receiving unit for receiving first information sent by a terminal device, wherein the first information is used to determine whether a first access method and a second access method are used for multi-access communication of the terminal device.

[0010] In the sixth aspect, a core network device is provided, which is a second core network device, including: a receiving unit for receiving third information sent by the first core network device, and the third information is used to determine whether the first access method and the second access method are used for multi-access communication of the terminal device.

[0011] In the seventh aspect, a terminal device is provided, comprising a processor, a memory, and a communication interface, 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 terminal device executes part or all of the steps in the method of the first aspect.

[0012] In the eighth aspect, a core network device is provided, comprising 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 in the method of the second aspect or the third aspect.

[0013] In a ninth aspect, an embodiment of the present application provides a communication system, which includes the above-mentioned terminal device and / or core network device. In another possible design, the system may also include other devices that interact with the terminal device or core network device in the solution provided in the embodiment of the present application.

[0014] In the tenth 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 core network device) to execute some or all of the steps in the methods of the above aspects.

[0015] In an eleventh 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 core 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.

[0016] In the twelfth 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.

[0017] In an embodiment of the present application, the terminal device can send first information to the first core network device, so that the first core network device can determine the first access method and the second access method involved in the multi-access communication based on the first information, which helps to improve the rationality of the network device's multi-access communication related configuration for the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic diagram of a wireless communication system to which an embodiment of the present application is applicable.

[0019] FIG2 is a schematic diagram of a communication architecture applicable to ATSSS technology.

[0020] FIG3 is a schematic diagram of a process for establishing an MA PDU session applicable to an embodiment of the present application.

[0021] FIG4 is a schematic diagram of another MA PDU session establishment process applicable to an embodiment of the present application.

[0022] FIG5 is a schematic diagram of a wireless communication method according to an embodiment of the present application.

[0023] 6 to 9 are schematic diagrams of wireless communication methods according to embodiments of the present application.

[0024] FIG10 is a schematic diagram of a terminal device according to an embodiment of the present application.

[0025] FIG11 is a schematic diagram of a core network device according to an embodiment of the present application.

[0026] Figure 12 is a schematic diagram of the core network device of an embodiment of the present application.

[0027] FIG13 is a schematic structural diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0028] The technical solution in this application will be described below with reference to the accompanying drawings.

[0029] 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 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, and unified data management function (UDM) 107.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] ATSSS

[0045] In some scenarios, in order to fully utilize the network resources of non-3GPP access networks (such as wireless fidelity (Wi-Fi)), the non-3GPP access network can be configured to collaborate with the 3GPP access network to achieve flexible diversion and switching of data traffic between the two access networks, and the ATSSS technology is introduced.

[0046] Figure 2 is a schematic diagram of a communication architecture applicable to ATSSS technology. As shown in Figure 2, compared with the basic 5G system architecture (for example, the communication architecture shown in Figure 1), the non-3GPP access method (non 3GPP access) is mainly added on the basis of the 3GPP access method, and these two access methods exist at the same time. In addition, there are corresponding ATSSS functional modules on the UE side and the UPF side, which are used to measure, switch and divert the transmitted data streams. Among them, the ASSSS functional module on the UE side includes: MPTCP function, MPQUIC function, ASSSS-LL function, and PMF. The ASSSS functional module on the UPF side includes: MPTCP proxy function, MPQUIC proxy function, ASSSS-LL proxy function, and PMF.

[0047] In some implementations, the non-3GPP access network and the 3GPP access network may use the same UPF, so that the UPF may act as a data aggregation point to communicate with the external DN.

[0048] Session establishment process

[0049] In order to support the establishment of the ATSSS architecture, the UE needs to establish a multi-access protocol data unit session (MA PDU session). Figures 3 and 4 show two processes for establishing an MA PDU session.

[0050] Figure 3 is a schematic diagram of the process for establishing an MA PDU session applicable to an embodiment of the present application. In this process, the UE can register with two access networks simultaneously and send a session establishment request through only one of the access modes. The method shown in Figure 3 includes steps S310 to S360.

[0051] In step S310a and step S310b, the UE registers through 3GPP access and non-3GPP access respectively, where the network element used for registration management is the same AMF.

[0052] In step S320, the UE sends a session establishment request to the AMF, where the session establishment request includes an MA PDU request indication for requesting to establish an MA PDU session.

[0053] In step S330, the AMF sends a session establishment request to the SMF, which may include a request indication of the MA PDU, the access network type (e.g., 3GPP or non-3GPP) to which the current UE sends the session establishment request, the access technology RAT of the current access network (such as NR, LTE, Wi-Fi, etc.), and additional access network type (e.g., 3GPP or non-3GPP) information.

[0054] In step S340, a session establishment process is executed, which may include configuration of the N3 tunnel, UPF configuration, etc.

[0055] It should be noted that the process may include subsequent steps S350 and S360.

[0056] In step S350, the SMF sends a session establishment response to the AMF, which includes an ATSSS rule, where the ATSSS rule is used to indicate a diversion rule for 3GPP access and non-3GPP access. For example, the diversion rule can be used to indicate that the data transmitted through 3GPP access accounts for 70% of the total data volume, and the data transmitted through non-3GPP access accounts for 30% of the total data volume.

[0057] In step S360, the AMF configures the ASS rules to the UE through a NAS message.

[0058] FIG4 is a schematic diagram of another MA PDU session establishment process applicable to an embodiment of the present application. In this process, the UE can simultaneously register with two access networks and send session establishment requests through two access modes. The method shown in FIG4 includes steps S410 to S460.

[0059] In step S410a and step S410b, the UE registers through 3GPP access and non-3GPP access respectively, where the network element used for registration management is the same AMF.

[0060] It should be understood that the 3GPP access and non-3GPP access described above may use different PLMNs. Furthermore, the registration processes for the 3GPP access and non-3GPP access may not be performed simultaneously. For example, a UE may first register for a 3GPP access and establish an MA PDU session by executing steps S410a to S440. The UE may then register through another access, triggering a session establishment request and configuring resources on the other access.

[0061] In step S420, the UE sends a session establishment request to the AMF through access 1. The session establishment request includes an MA PDU request indication and a session identifier (session ID) for requesting to establish an MA PDU session.

[0062] In step S430, the AMF sends a session establishment request to the SMF, which includes a request indication of the MA PDU, the type of access network (3GPP or non-3GPP) to which the current UE sends the session establishment request, and the access technology RAT of the current access network (such as NR, LTE, Wi-Fi, etc.).

[0063] In step S440, the session establishment process is executed, which includes the configuration of the N3 tunnel, UPF configuration, etc.

[0064] In step S450 , the UE sends a session establishment request through access 2 , where the session establishment request includes a session ID corresponding to the MA PDU session established through access 1 .

[0065] In step S460, the AMF sends a session establishment request to the SMF, where the session establishment request includes a request indication of the MA PDU and the access network type of the MA PDU session (for example, the access network type corresponding to access 2).

[0066] In some scenarios, the request may be a session modification request.

[0067] In step S470, a session establishment and configuration process is executed to configure user plane resources corresponding to access 2.

[0068] In step S480, the SMF sends a session establishment response to the AMF, which includes an ATSSS rule, where the ATSSS rule is used to indicate the diversion rule for 3GPP access and non-3GPP access. For example, the diversion rule can be used to indicate that the data transmitted through 3GPP access accounts for 70% of the total data volume, and the data transmitted through non-3GPP access accounts for 30% of the total data volume.

[0069] In step S490, the AMF configures the ASS rules to the UE through a NAS message.

[0070] As previously mentioned, traditional multi-access communication is based on non-3GPP access and 3GPP access. Accordingly, the introduced ASSSS technology is also implemented for this type of multi-access communication. With the development of technology, other types of multi-access communication technologies have been introduced, such as multi-access communication based on different types of 3GPP access. However, how to implement these other types of multi-access communication technologies is currently not specified.

[0071] The applicant found that after the introduction of other types of multi-access communications, the network equipment was unable to determine the type of multi-access communication technology required by the terminal device, and therefore was unable to reasonably configure the terminal device, resulting in the inability to implement the above-mentioned other types of multi-access communication technology.

[0072] Therefore, to address the above issues, an embodiment of the present application provides a method for wireless communication, in which a terminal device can send first information to a first core network device, so that the first core network device can determine the first access mode and the second access mode involved in multi-access communication based on the first information, thereby helping to improve the rationality of the network device's configuration related to multi-access communication for the terminal device. The wireless communication method of an embodiment of the present application is described below in conjunction with Figure 5.

[0073] In step S510, the terminal device sends first information to the first core network device, wherein the first information is used to determine whether the first access method and the second access method are used for multi-access communication of the terminal device.

[0074] In some implementations, the first core network device may be an AMF. Of course, in the embodiment of the present application, the first core network device may also be other core network devices with similar functions to the AMF in future communication systems.

[0075] In the embodiment of the present application, the access methods involved in the above-mentioned multi-access communications are not limited. In some implementations, the access methods involved in the multi-access communications include 3GPP access methods and non-3GPP access methods. In other implementations, the access methods involved in the multi-access communications include different types of 3GPP access methods. For example, different types of 3GPP access methods may include access methods based on 4G networks and access methods based on 5G networks. Of course, in the embodiment of the present application, the access methods involved in the multi-access communications may include 5G access methods for different PLMNs, or may also include access methods for different multiple terminal devices, or may also include access methods for different multiple user permanent identifiers (SUPIs).

[0076] In some implementations, the first information carries one or more of the following: identification information of the terminal device; information about the first access method; and information about the second access method. In some scenarios, one or more of the terminal device identification information, the first access method information, and the second access method information may be collectively referred to as "associated information."

[0077] In some implementations, the association information may be used to indicate that the first access method is associated with the second access method.

[0078] In an embodiment of the present application, the above-mentioned association information may explicitly indicate that the first access method is associated with the second access method. For example, the association relationship may occupy one bit, and if the value of the bit is the first value, it indicates that the first access method is associated with the second access method. Correspondingly, if the value of the bit is the second value, it indicates that the first access method is not associated with the second access method. The first value is different from the second value. For example, the first value may be 0, and the second value may be 1. For another example, the first value may be 1, and the second value may be 0. Of course, in an embodiment of the present application, the above-mentioned association information may implicitly indicate that the first access method is associated with the second access method. That is to say, if the association information includes information about the first access method and information about the second access method, it indicates that the first access method is associated with the second access method.

[0079] In the embodiment of the present application, there is no limitation on the combination of information included in the association information. For example, the association information may be a first UE ID (also known as a first terminal device identifier) ​​and a corresponding PDU session identifier ID, wherein the first UE ID may be a UE ID corresponding to the first access method. For another example, the association information may be an IP address of the first UE (the IP address of the first UE may be used to indicate the first UE ID and the corresponding PDU session identifier ID), wherein the first UE IP address may be an IP address of a UE corresponding to the first access method.

[0080] In some implementations, the AMF may send the above information to the SMF, and the SMF may associate the current session of the second access mode with the session of the first access mode represented by the above association information.

[0081] In other implementations, the association information may further include one or more of the following: the first UE ID corresponding to the first access mode, the association ID, and the user subscription ID. Accordingly, the core network device (e.g., AMF) determines the first UE ID corresponding to the first access mode and the session of the first access mode based on the association information, and sends information corresponding to the session, such as the first UE ID and the PDU session ID, to the SMF. Accordingly, the SMF may associate the current session of the second access mode with the session of the first access mode represented by the above information.

[0082] Taking the first information carrying the identification information of the terminal device as an example, in some implementations, the identification information of the terminal device may include one or more of the following: terminal device ID; user contract identification corresponding to the terminal device; and correlation ID.

[0083] In some implementations, the terminal device ID may include the IP address of the terminal device.

[0084] In some scenarios, the terminal device may be provided with multiple universal subscriber identity modules (USIM) cards, and the terminal device may respectively execute different access methods in multi-access communications through different USIM cards among the multiple USIM cards. For example, the terminal device may be provided with USIM1 and USIM2, and accordingly, the first access method is executed through USIM1 (at this time, the identifier of USIM1 can be understood as the identifier of the terminal device corresponding to the first access method), and the second access method is executed through USIM2 (at this time, the identifier of USIM2 can be understood as the identifier of the terminal device corresponding to the second access method). At this time, the identification information of the above-mentioned terminal device may include the identifier of USIM1 and / or the identifier of USIM2. Alternatively, the identification information of the above-mentioned terminal device may include an association identifier, which is used to indicate that USIM1 is associated with USIM2.

[0085] For example, the terminal device sending the first information may be USIM1, and accordingly, the terminal device identifier carried in the first information may be USIM2. In other words, the terminal device identified by the terminal device identifier carried in the first information is associated with the terminal device sending the first information, or in other words, the terminal device identified by the terminal device identifier carried in the first information and the terminal device sending the first information are used to perform multi-access communication.

[0086] In the embodiment of the present application, there is no limitation on the method for obtaining the association identifier. For example, the association identifier may be allocated by the core network device to the terminal device.

[0087] Taking the example of the first information carrying the information of the first access method, in some implementations, the information of the first access method may include one or more of the following: the identifier of the first access network; the type of access network corresponding to the first access method; the identifier of the terminal device corresponding to the first access method; and the RAT type corresponding to the first access method.

[0088] In some implementations, the identifier of the first access network may be a PLMN identifier.

[0089] In some implementations, the type of access network corresponding to the first access mode may include 3GPP access and non-3GPP access.

[0090] In some implementations, the RAT type corresponding to the first access method may include one or more of the following: satellite-based RAT, NR RAT, Wi-Fi RAT, and LTE RAT.

[0091] In some implementations, the terminal device identifier corresponding to the first access method is used to identify the terminal device that executes the first access method. For example, the terminal device may be provided with USIM1 and USIM2. Accordingly, the first access method is executed through USIM1, and the second access method is executed through USIM2. In this case, the terminal device identifier corresponding to the first access method may be the identifier of USIM1.

[0092] Taking the example of the first information carrying the information of the second access method, in some implementations, the information of the second access method may include one or more of the following: the identifier of the second access network; the type of access network corresponding to the second access method; the identifier of the terminal device corresponding to the second access method; and the RAT type corresponding to the second access method.

[0093] In some implementations, the identifier of the second access network may be a PLMN identifier.

[0094] In some implementations, the type of access network corresponding to the second access mode may include 3GPP access and non-3GPP access.

[0095] In some implementations, the RAT type corresponding to the second access method may include one or more of the following: satellite-based RAT, NR RAT, Wi-Fi RAT, and LTE RAT.

[0096] In the embodiments of the present application, the relationship between the first access method and the second access method is not limited. For example, the first access method and the second access method may include two different access methods in a scenario where different terminal devices access different access networks. For another example, the first access method and the second access method may include two different access methods in a scenario where different terminal devices access the same access network.

[0097] In some implementations, the terminal device identifier corresponding to the second access method is used to identify the terminal device that executes the second access method. For example, the terminal device may be provided with USIM1 and USIM2. Accordingly, the first access method is executed through USIM1, and the second access method is executed through USIM2. In this case, the terminal device identifier corresponding to the second access method may be the identifier of USIM2.

[0098] In some implementations, the first information is carried in a first request, and the first request is used to request establishment or modification of a first session.

[0099] In some implementations, the first information carries a first indication, which is used to indicate that the first session is used for multi-access communication. Therefore, the first information can also be referred to as "multi-access indication information." In other implementations, multi-access communication is also called "dual steer communication," a type of communication designed to allow user traffic to be flexibly switched and / or diverted between multiple access methods. Accordingly, the first information can also be referred to as "dual steer indication information."

[0100] As described above, the first session can be used for multi-access communication. Accordingly, the first session can also be referred to as a "multi-access session." For example, if the first session is a PDU session, the first session is also referred to as a "MA PDU session." Accordingly, the multi-access indication information is also referred to as an "MA PDU request indication."

[0101] In some implementations, the first information carries a session identifier of the second session, and the second session corresponds to the second access mode. In this way, the first core network device can determine that the first session is associated with the second session, or that the first session and the second session are used for multi-access communication.

[0102] In some scenarios, the first core network device sends third information to the second core network device to indicate to the second core network device that the first access method and the second access method are used for multi-access communication. In other words, the third information is used to indicate that the first access method and the second access method are used for multi-access communication of the terminal device.

[0103] In some implementations, the second core network device may be an SMF. Of course, in the embodiment of the present application, the second core network device may also be other core network devices with similar functions to the SMF in future communication systems.

[0104] In the embodiments of the present application, the content of the third information is not limited. In some implementations, the third information may be determined based on the first information. For example, the content of the third information may be the same as that of the first information. In this case, it can be understood that after receiving the first information, the first core network device forwards the first information to the second core network device. For another example, the content of the third information may be different from that of the first information, but the content of the third information may be determined based on the first information.

[0105] That is, the terminal device can report only the terminal device identifier through the first information, and accordingly, the AMF can determine the first access method based on the terminal device identifier. That is, if the first information carries the terminal device identifier, the above method further includes: the first core network device determining type information corresponding to the first access method based on the terminal device identifier, where the type information includes the access network type and / or RAT type; and the above first core network device sending third information to the second core network device, including: the first core network device sending the third information to the second core network device, the third information carrying the type information corresponding to the first access method.

[0106] In some implementations, the above method also includes: the first core network device receives response information sent by the second core network device to the third information, and the response information of the third information is used to indicate the diversion rules corresponding to the multi-access communication and / or the switching rules corresponding to the multi-access communication.

[0107] In some scenarios, the above-mentioned diversion rules and / or switching rules can be used for multi-access communication. Therefore, the diversion rules and / or switching rules can also be referred to as "multi-access rules." In other scenarios, multi-access communication is also called "dual steer communication." Accordingly, the above-mentioned multi-access rules can also be referred to as dual steer rules.

[0108] In some implementations, the traffic diversion rule indicates how traffic is diverted between the first access method and the second access method. For example, the traffic diversion rule indicates that data traffic transmitted via the first access method accounts for 70% of the total traffic, and data traffic transmitted via the second access method accounts for 30% of the total traffic. The total traffic can be understood as the total amount of data traffic to be transmitted in multi-access communications.

[0109] In some implementations, the switching rule is used to indicate the timing of switching traffic between the first access mode and the second access mode. For example, the switching rule is used to indicate the conditions for switching (also known as the first condition), or in other words, if the first condition is met, the traffic is switched from the first access mode to the second access mode. Of course, in the embodiment of the present application, if the first condition is met, the traffic can be switched from the second access mode to the first access mode. The following takes the example of switching traffic from the first access mode to the second access mode to introduce the first condition in the embodiment of the present application.

[0110] In some implementations, the first condition is associated with a latency for transmitting traffic using the first access method. That is, if the latency for transmitting traffic using the first access method is large, the traffic can be switched from the first access method to the second access method, thereby reducing the latency required for transmitting the traffic.

[0111] For example, if the delay of transmitting traffic through the first access method is greater than or equal to a threshold value, it can be understood that the first condition is met, and the traffic can be switched from the first access method to the second access method. The threshold value can be determined based on one or more of the following information: predefined information, preconfigured information, and configuration information of the network device. Of course, in an embodiment of the present application, if the delay of transmitting traffic through the first access method is a target value, it can be understood that the first condition is met, and the traffic can be switched from the first access method to the second access method. The target value can be determined based on one or more of the following information: predefined information, preconfigured information, and configuration information of the network device.

[0112] In some implementations, the first condition is associated with the total amount of traffic transmitted in the first access method. That is, if the total amount of traffic transmitted in the first access method is large, traffic can be switched from the first access method to the second access method, thereby helping to avoid traffic transmission congestion and transmission failure.

[0113] For example, if the total amount of traffic transmitted through the first access method is greater than or equal to threshold 1, it can be understood that the first condition is met, and the traffic can be switched from the first access method to the second access method. Among them, threshold 1 can be determined based on one or more of the following information: predefined information, preconfigured information, and configuration information of the network device. Of course, in an embodiment of the present application, if the total amount of traffic transmitted through the first access method is a target value, it can be understood that the first condition is met, and the traffic can be switched from the first access method to the second access method. Among them, the target value can be determined based on one or more of the following information: predefined information, preconfigured information, and configuration information of the network device.

[0114] Taking threshold 1 as 4500M as an example, if the total amount of traffic transmitted through the first access method is 5000M, the total amount of traffic transmitted through the first access method is greater than or equal to threshold 1. At this time, the first condition is met, and the traffic can be switched from the first access method to the second access method.

[0115] In some implementations, the first condition is associated with a transmission rate of traffic in the first access mode. That is, if the transmission rate of traffic in the first access mode is low, the traffic can be switched from the first access mode to the second access mode, thereby reducing a delay in transmitting the traffic.

[0116] For example, if the transmission rate of the traffic in the first access mode is less than or equal to the threshold value 2, it can be understood that the first condition is met, and the traffic can be switched from the first access mode to the second access mode. Among them, the transmission rate of the traffic in the second access mode is greater than or equal to the threshold value 2. Of course, in the embodiment of the present application, if the transmission rate of the traffic in the second access mode is greater than the transmission rate of the traffic in the first access mode, it can be understood that the first condition is met, and the traffic can be switched from the first access mode to the second access mode. Alternatively, if the transmission rate of the traffic in the second access mode is greater than the transmission rate of the traffic in the first access mode, and the difference between the transmission rate of the traffic in the second access mode and the transmission rate of the traffic in the first access mode is greater than or equal to the threshold value 2, it can be understood that the first condition is met, and the traffic can be switched from the first access mode to the second access mode.

[0117] The threshold 2 may be determined based on one or more of the following information: predefined information, preconfigured information, and configuration information of the network device.

[0118] Taking threshold 2 as 50Mbps as an example, if the transmission rate of the traffic in the second access mode is greater than the transmission rate of the traffic in the first access mode, and the difference between the transmission rate of the traffic in the second access mode and the transmission rate of the traffic in the first access mode is 100Mbps, then the difference is greater than or equal to threshold 2. At this time, the first condition is met, and the traffic can be switched from the first access mode to the second access mode.

[0119] In some implementations, the first condition is associated with a packet loss rate of traffic transmitted in the first access method. That is, if the packet loss rate of traffic transmitted in the first access method is high, the traffic can be switched from the first access method to the second access method, thereby improving the success rate of traffic transmission.

[0120] For example, if the packet loss rate of traffic transmitted through the first access method is greater than or equal to a threshold value of 3, it can be understood that the first condition is met, and the traffic can be switched from the first access method to the second access method. The threshold value 3 can be determined based on one or more of the following information: predefined information, preconfigured information, and configuration information of the network device. Of course, in an embodiment of the present application, if the packet loss rate of traffic transmitted through the first access method is a target value, it can be understood that the first condition is met, and the traffic can be switched from the first access method to the second access method. The target value can be determined based on one or more of the following information: predefined information, preconfigured information, and configuration information of the network device.

[0121] In some implementations, the response information of the third information further includes information about the first access method and / or information about the second access method. The information about the first access method and / or the second access method can be found in the above description.

[0122] In some implementations, the above method also includes: the first core network device sends second information to the terminal device, and the second information is determined based on response information of the third information.

[0123] In the embodiment of the present application, the content of the second information is not limited. In some implementations, the second information is determined based on the response information of the third information, which can be understood as the second information having the same content as the response information of the third information. That is to say, after receiving the response information of the third information, the first core network device can forward the response information of the third information to the terminal device. Of course, in the embodiment of the present application, the content of the second information may be different from the content of the response information of the third information, but the content of the second information is determined based on the response information of the third information. For example, the first core network device can process part of the content in the response information of the third information, and send the processed content as the second device to the terminal device.

[0124] For ease of understanding, the wireless communication method of the embodiment of the present application is described below in conjunction with Figures 6 to 9. It should be understood that the methods of Figures 6 to 9 are only used to understand the present application, and the scope of protection of the present application is not limited thereto.

[0125] In the method shown in Figure 6, it is assumed that the UE is in a dual-registration state. That is, the UE has completed registration for both a first access method and a second access method. The first access method and the second access method are used for multi-access communication of the UE. The first access method corresponds to AN1, and the second access method corresponds to AN2. The method shown in Figure 6 includes steps S610 to S660.

[0126] In step S610a and step S610b, the UE registers through AN1 and AN2 respectively, where the network element used for registration management is the same AMF.

[0127] In step S620, the UE sends a session establishment request to the AMF through AN1.

[0128] In some implementations, the session establishment request includes an MA PDU request indication, information about the first access method, and information about the second access method. The MA PDU request indication is used to request establishment of an MA PDU session. The first access method information is used to indicate the access network type corresponding to the first access method and the RAT type corresponding to the first access method. The second access method information is used to indicate the access network type corresponding to the second access method and the RAT type corresponding to the second access method.

[0129] In step S630, the AMF sends a session establishment request to the SMF, which includes a request indication of the MA PDU, information about the first access method, additional access network type information (i.e., the access network type corresponding to the second access method), and the RAT type corresponding to the second access method.

[0130] In step S640, the session establishment process is executed, which includes the configuration of the N3 tunnel, UPF configuration, etc.

[0131] In step S650, SMF sends a session establishment response to AMF, which includes ASSSS rules. The ASSSS rules include: information about the first access method, information about the second access method, diversion rules corresponding to multi-access communication, and switching rules corresponding to multi-access communication.

[0132] The information of the first access method may include the type of access network corresponding to the first access method and the RAT type corresponding to the first access method. The information of the second access method may include the type of access network corresponding to the second access method and the RAT type corresponding to the second access method. The diversion rule is used to indicate that the data traffic transmitted through the first access method accounts for 70% of the total traffic, and the data traffic transmitted through the second access method accounts for 30% of the total traffic. The switching rule is used to indicate that if the first condition is met, the data traffic will be switched from the first access method to the second access method, wherein the first condition includes one or more of the following: the delay of transmitting the data stream through the first access method is greater than a threshold, the total amount of data stream transmitted through the first access method is greater than a threshold, and the packet error rate transmitted through the first access method is greater than a threshold.

[0133] In step S660, the AMF configures the above ASSSS rules to the UE through a NAS message.

[0134] In an embodiment of the present application, the terminal device can carry information about the second access method through a session establishment request to inform the network device of the access method corresponding to the MA PDU session requested to be established, which helps to expand the application scenarios of traditional ATSSS technology from multi-access scenarios based on 3GPP access and non-3GPP access to multi-access scenarios based on different 3GPP access types.

[0135] On the other hand, the configured ATSSS rules can indicate information of two access methods and determine their corresponding diversion rules and / or diversion rules so that the UE can subsequently perform multi-access communication based on the first access method and the second access method.

[0136] It should be noted that the above introduction uses multi-access communication based on 3GPP access method and non-3GPP access method as an example. The embodiments of this application are not limited to this. For details, please refer to the above introduction to the first access method and the second access method.

[0137] In the method shown in Figure 7, the UE completes registration for a first access method and a second access method, wherein the first access method and the second access method are used for multi-access communication of the UE, wherein the first access method corresponds to AN1 and the second access method corresponds to AN2. The method shown in Figure 7 includes steps S710 to S760.

[0138] In step S710a and step S710b, the UE registers through 3GPP access and non-3GPP access respectively, where the network element used for registration management is the same AMF.

[0139] In step S720, the UE sends a session establishment request to the AMF through AN1.

[0140] In some implementations, the session establishment request includes multiple access indication information (also called "dual split indication information") and associated information.

[0141] The above-mentioned multiple access indication information is used to indicate that the requested session is used for multiple access communication.

[0142] The above-mentioned association information is used to indicate the association between the first access method and the second access method. The association information may include identification information of the terminal device and information about the second access method. The identification information of the terminal device may include one or more of the terminal device ID, the user subscription identifier corresponding to the terminal device, the IP address of the terminal device, and the association identifier. For an introduction to the relevant information, please refer to the above. In addition, the information of the second access method is used to indicate the access network type corresponding to the second access method and the RAT type corresponding to the second access method.

[0143] In other implementations, the above-mentioned association information may not carry the information of the second access method. In this case, after receiving the association information, the AMF can obtain the information of the second access method based on the identification of the terminal device, and carry the information in the session request to send the SMF (see step S730).

[0144] In step S730, the AMF sends a session establishment request to the SMF, where the session establishment request includes the above-mentioned multi-access indication information, information about the first access method, and information about the second access method.

[0145] In some implementations, the information of the second access method may include one or more of the following: UE ID, second access network type, access network ID, and RAT. The access network ID may be, for example, a PLMN ID.

[0146] In step S740, the session establishment process is executed, which includes the configuration of the N3 tunnel, UPF configuration, etc.

[0147] In step S750, SMF sends a session establishment response to AMF, which includes multiple access rules (also known as "dual diversion rules"), and the multiple access rules include: information about the first access method, information about the second access method, diversion rules corresponding to multiple access communications, and switching rules corresponding to multiple access communications.

[0148] The information of the first access method may include the type of access network corresponding to the first access method and the RAT type corresponding to the first access method. The information of the second access method may include the type of access network corresponding to the second access method and the RAT type corresponding to the second access method. The diversion rule is used to indicate that the data traffic transmitted through the first access method accounts for 70% of the total traffic, and the data traffic transmitted through the second access method accounts for 30% of the total traffic. The switching rule is used to indicate that if the first condition is met, the data traffic will be switched from the first access method to the second access method, wherein the first condition includes one or more of the following: the delay of transmitting the data stream through the first access method is greater than a threshold, the total amount of data stream transmitted through the first access method is greater than a threshold, and the packet error rate transmitted through the first access method is greater than a threshold.

[0149] In step S760, the AMF configures multiple access rules to the UE through a NAS message.

[0150] In an embodiment of the present application, the terminal device can carry information about the second access method through a session establishment request to inform the network device of the associated access method (i.e., the second access method) corresponding to the MA PDU session requested to be established, which helps to realize multi-access communication in various scenarios.

[0151] It should be noted that the above-mentioned first access method and second access method can be access methods corresponding to multiple USIMs in the terminal device. For example, the first access method can be the access method corresponding to USIM1 among multiple USIMs, and the second access method can be the access method corresponding to USIM2 among multiple USIMs.

[0152] The above describes the method of the embodiment of the present application in the scenario where the UE is in a dual registration state in conjunction with Figures 6 and 7. The following describes the method of the embodiment of the present application in the single access scenario in the embodiment of the present application in conjunction with Figures 8 and 9. It should be noted that in the schemes described in Figures 8 and 9, AMF1 and AMF2 can be the same AMF or different AMFs. For ease of understanding, the following description takes AMF1 and AMF2 as the same example.

[0153] In the method shown in Figure 8, it is assumed that the UE performs multi-access communication based on a first access mode and a second access mode, wherein the first access mode is an access mode based on AN1 and the second access mode is an access mode based on AN2. The method shown in Figure 8 includes steps S810 to S860.

[0154] In step S810a and step S810b, the UE registers through AN1 and AN2 respectively, where the network element used for registration management is the same AMF.

[0155] It should be understood that the first access method and the second access method may use different PLMNs. In addition, the registration processes corresponding to the first access method and the second access method may not be performed simultaneously. For example, the UE may register through the first access method and establish an MA PDU session by executing steps S810a to S840. The UE may then register through another access method (i.e., the second access method), trigger a session establishment request, and configure resources on the other access method.

[0156] In step S820, the UE sends a session establishment request to AMF1 through access 1. The session establishment request includes an MA PDU request indication and a session identifier (session ID) for requesting to establish an MA PDU session.

[0157] In step S830, AMF1 sends a session establishment request to SMF, which includes a request indication of the MA PDU, the type of access network (3GPP or non-3GPP) to which the current UE sends the session establishment request, and the access technology RAT of the current access network (such as NR, LTE, Wi-Fi, etc.).

[0158] In step S840, the session establishment process is executed, which includes the configuration of the N3 tunnel, UPF configuration, etc.

[0159] In step S850, the UE sends a session establishment request to AMF2 through access 2, where the session establishment request includes the session ID corresponding to the MA PDU session established through access 1.

[0160] In step S860, AMF2 sends a session establishment request to SMF, which includes a request indication of MA PDU, the access network type of the MA PDU session (for example, the access network type corresponding to access 2), and the RAT of the access network corresponding to access 2.

[0161] In some implementations, the session establishment request may be a session modification request.

[0162] In step S870, a session establishment and configuration process is executed to configure user plane resources corresponding to access 2.

[0163] In step S880, AMF2 sends a user plane request to AMF1, where the user plane request includes ASSS rules.

[0164] In some implementations, the session establishment response includes ATSSS rules, and the ASSSS rules include: information of the first access method, information of the second access method, diversion rules corresponding to multi-access communication, and switching rules corresponding to multi-access communication.

[0165] The information of the first access method may include the type of access network corresponding to the first access method and the RAT type corresponding to the first access method. The information of the second access method may include the type of access network corresponding to the second access method and the RAT type corresponding to the second access method. The diversion rule is used to indicate that the data traffic transmitted through the first access method accounts for 70% of the total traffic, and the data traffic transmitted through the second access method accounts for 30% of the total traffic. The switching rule is used to indicate that if the first condition is met, the data traffic will be switched from the first access method to the second access method, wherein the first condition includes one or more of the following: the delay of transmitting the data stream through the first access method is greater than a threshold, the total amount of data stream transmitted through the first access method is greater than a threshold, and the packet error rate transmitted through the first access method is greater than a threshold.

[0166] In step S890, AMF1 sends a session establishment response to the UE, which carries the ASSSS rules.

[0167] In the method shown in FIG9 , it is assumed that the UE performs multi-access communication based on a first access mode and a second access mode, wherein the first access mode is an access mode based on AN1 and the second access mode is an access mode based on AN2. The method shown in FIG9 includes steps S910 to S960.

[0168] In step S910a and step S910b, the UE registers through AN1 and AN2 respectively, where the network element used for registration management is the same AMF.

[0169] It should be understood that the first access method and the second access method may use different PLMNs. In addition, the registration processes corresponding to the first access method and the second access method may not be performed simultaneously. For example, the UE may first register through the first access method and establish an MA PDU session by executing steps S910a to S940. The UE may then register through another access method (i.e., the second access method), trigger a session establishment request, and configure resources on the other access method.

[0170] In step S920, the UE sends a session establishment request to AMF1 via access 1. The session establishment request includes a session ID for requesting session establishment. Optionally, the session establishment request may include multiple access indication information (also known as "dual split indication information").

[0171] In step S930, AMF1 sends a session establishment request to SMF, which includes a request indication of the MA PDU, the type of access network (3GPP or non-3GPP) to which the current UE sends the session establishment request, and the access technology RAT of the current access network (such as NR, LTE, Wi-Fi, etc.).

[0172] In step S940, the session establishment process is executed, which includes the configuration of the N3 tunnel, UPF configuration, etc.

[0173] In step S950, the UE sends a session establishment request to AMF2 through access 2, where the session establishment request includes multiple access indication information and association information.

[0174] In some implementations, the association information may include identification information of the terminal device and information about the first access method. The identification information of the terminal device may include one or more of the terminal device ID, the user subscription identifier corresponding to the terminal device, the IP address of the terminal device, and the association identifier. For an introduction to the relevant information, please refer to the above. The information about the first access method may include one or more of the following: the access network type, access network ID, RAT, PDU session ID corresponding to the first access method, and UE IP address of the first access method.

[0175] In an embodiment of the present application, the association information may be a combination of the above information. For example, the association information may be the first UE ID and the corresponding PDU session identifier ID, where the first UE ID may be the UE ID corresponding to the first access method. For another example, the association information may be the first UE IP address, where the first UE IP address may be the IP address of the UE corresponding to the first access method.

[0176] Afterwards, AMF can send the above information to SMF, and SMF can associate the current second access mode session with the first access mode session represented by the above association information.

[0177] In some other implementations, the association information may further include one or more of the following: the first UE ID corresponding to the first access mode, the association ID, and the user subscription ID. Accordingly, the AMF determines the first UE ID corresponding to the first access mode and the session of the first access mode based on the association information, and sends information corresponding to the session, such as the first UE ID and the PDU session ID, to the SMF. Accordingly, the SMF may associate the current session of the second access mode with the session of the first access mode represented by the above information.

[0178] In step S960, AMF2 sends a session establishment request to SMF, which includes multiple access indication information, association information, the access network type corresponding to access 2, and the RAT of the access network corresponding to access 2.

[0179] In some implementations, the session establishment request may be a session modification request.

[0180] In step S970, a session establishment and configuration process is executed to configure user plane resources corresponding to access 2.

[0181] In step S980, AMF2 sends a session establishment response to AMF1, where the session establishment response includes multiple access rules.

[0182] In some implementations, the session establishment response includes multiple access rules, and the multiple access rules include: information about the first access method, information about the second access method, diversion rules corresponding to the multiple access communication, and switching rules corresponding to the multiple access communication.

[0183] The information of the first access method may include the type of access network corresponding to the first access method and the RAT type corresponding to the first access method. The information of the second access method may include the type of access network corresponding to the second access method and the RAT type corresponding to the second access method. The diversion rule is used to indicate that the data traffic transmitted through the first access method accounts for 70% of the total traffic, and the data traffic transmitted through the second access method accounts for 30% of the total traffic. The switching rule is used to indicate that if the first condition is met, the data traffic will be switched from the first access method to the second access method, wherein the first condition includes one or more of the following: the delay of transmitting the data stream through the first access method is greater than a threshold, the total amount of data stream transmitted through the first access method is greater than a threshold, and the packet error rate transmitted through the first access method is greater than a threshold.

[0184] In step S990, AMF1 sends a session establishment response to the UE, where the session establishment response carries multiple access rules.

[0185] The method embodiment of the present application is described in detail above in conjunction with Figures 1 to 9 . The device embodiment of the present application is described in detail below in conjunction with Figures 10 to 13 . It should be understood that the description of the method embodiment corresponds to the description of the device embodiment. Therefore, for portions not described in detail, reference can be made to the above method embodiment.

[0186] FIG10 is a schematic diagram of a terminal device according to an embodiment of the present application. The terminal device 1000 shown in FIG10 includes: a sending unit 1010 .

[0187] The sending unit 1010 is used to send first information to the first core network device, where the first information is used to determine whether the first access method and the second access method are used for multi-access communication of the terminal device.

[0188] In some implementations, the first information carries one or more of the following: identification information of the terminal device; information of the first access method; information of the second access method; and information indicating that the first access method is associated with the second access method.

[0189] In some implementations, the identification information of the terminal device includes one or more of the following: the IP address of the terminal device; the user contract identification corresponding to the terminal device; and the association identification of the terminal device, where the association identification is used to determine the association between the first access method and the second access method.

[0190] In some implementations, the first information is carried in a first request, where the first request is used to request establishment or modification of a first session.

[0191] In some implementations, the first information carries a first indication, where the first indication is used to indicate that the first session is used for the multi-access communication.

[0192] In some implementations, the first information carries a session identifier of a second session, and the second session corresponds to the second access mode.

[0193] In some implementations, the terminal device further includes: in response to sending the first information, a receiving unit for receiving second information, wherein the second information is used to indicate a diversion rule corresponding to the multi-access communication, and / or a switching rule corresponding to the multi-access communication, wherein the diversion rule is used to indicate a diversion method for traffic between the first access method and the second access method, and the switching rule is used to indicate a timing for switching traffic between the first access method and the second access method.

[0194] In some implementations, the second information also includes information about the first access method and / or information about the second access method.

[0195] In some implementations, the second information is carried in a response message to a first request, where the first request is used to request establishment or modification of a first session.

[0196] In some implementations, the information of the first access method includes one or more of the following: the type of access network corresponding to the first access method; the terminal device identifier corresponding to the first access method; and the RAT type corresponding to the first access method.

[0197] In some implementations, the information of the second access method includes one or more of the following: the type of access network corresponding to the second access method; the terminal device identifier corresponding to the second access method; and the RAT type corresponding to the second access method.

[0198] In some implementations, the first core network device is an AMF.

[0199] FIG11 is a schematic diagram of a core network device according to an embodiment of the present application. The core network device 1100 shown in FIG11 is a first core network device, and the core network device 1100 includes: a receiving unit 1110 .

[0200] A receiving unit is used to receive first information sent by a terminal device, where the first information is used to determine whether a first access method and a second access method are used for multi-access communication of the terminal device.

[0201] In some implementations, the first information carries one or more of the following: identification information of the terminal device; information of the first access method; information of the second access method; and information indicating that the first access method is associated with the second access method.

[0202] In some implementations, the identification information of the terminal device includes one or more of the following: the IP address of the terminal device; the user contract identification corresponding to the terminal device; and the association identification of the terminal device, where the association identification is used to determine the association between the first access method and the second access method.

[0203] In some implementations, the first information is carried in a first request, where the first request is used to request establishment or modification of a first session.

[0204] In some implementations, the first information carries a first indication, where the first indication is used to indicate that the first session is used for the multi-access communication.

[0205] In some implementations, the first information carries a session identifier of a second session, and the second session corresponds to the second access mode.

[0206] In some implementations, the core network device further includes: a first sending unit, used to send third information to the second core network device, the third information is determined based on the first information, and the third information is used to indicate that the first access method and the second access method are used for multi-access communication of the terminal device.

[0207] In some implementations, if the information of the first access method carried by the first information includes a terminal device identifier corresponding to the first access method, the core network device further includes: a processing unit for determining the type information corresponding to the first access method based on the terminal device identifier corresponding to the first access method, wherein the type information includes the type of the access network and / or the RAT type; and the first sending unit for sending third information to the second core network device, wherein the third information carries the type information corresponding to the first access method.

[0208] In some implementations, the receiving unit is used to receive response information sent by the second core network device to the third information, and the response information of the third information is used to indicate the diversion rules corresponding to the multi-access communication, and / or the switching rules corresponding to the multi-access communication, wherein the diversion rules are used to indicate the diversion method of traffic between the first access method and the second access method, and the switching rules are used to indicate the timing of switching traffic between the first access method and the second access method.

[0209] In some implementations, the response information of the third information also includes information about the first access method and / or information about the second access method.

[0210] In some implementations, the first sending unit is configured to send second information to the terminal device, where the second information is determined based on response information to the third information.

[0211] In some implementations, the information of the first access method includes one or more of the following: the type of access network corresponding to the first access method; the terminal device identifier corresponding to the first access method; and the RAT type corresponding to the first access method.

[0212] In some implementations, the information of the second access method includes one or more of the following: the type of access network corresponding to the second access method; the terminal device identifier corresponding to the second access method; and the RAT type corresponding to the second access method.

[0213] In some implementations, the first core network device is an AMF.

[0214] FIG12 is a schematic diagram of a core network device according to an embodiment of the present application. The core network device 1200 shown in FIG12 is a second core network device, and the core network device 1200 includes: a receiving unit 1210 .

[0215] The receiving unit 1210 is used to receive third information sent by the first core network device, where the third information is used to determine whether the first access method and the second access method are used for multi-access communication of the terminal device.

[0216] In some implementations, the third information carries one or more of the following: identification information of the terminal device; information of the first access method; information of the second access method; and information indicating that the first access method is associated with the second access method.

[0217] In some implementations, the identification information of the terminal device includes one or more of the following: the IP address of the terminal device; the user contract identification corresponding to the terminal device; and the association identification of the terminal device, where the association identification is used to determine the association between the first access method and the second access method.

[0218] In some implementations, the third information is carried in a first request, where the first request is used to request establishment or modification of a first session.

[0219] In some implementations, the third information carries a first indication, where the first indication is used to indicate that the first session is used for the multi-access communication.

[0220] In some implementations, the third information carries a session identifier of a second session, and the second session corresponds to the second access mode.

[0221] In some implementations, the core network device further includes: a sending unit, configured to send response information to the first core network device regarding the third information, wherein the response information to the third information is used to indicate the diversion rules corresponding to the multi-access communication, and / or the switching rules corresponding to the multi-access communication, wherein the diversion rules are used to indicate the diversion method of traffic between the first access method and the second access method, and the switching rules are used to indicate the timing for switching traffic between the first access method and the second access method.

[0222] In some implementations, the response information of the third information also includes information about the first access method and / or information about the second access method.

[0223] In some implementations, the information of the first access method includes one or more of the following: the type of access network corresponding to the first access method; the terminal device identifier corresponding to the first access method; and the RAT type corresponding to the first access method.

[0224] In some implementations, the information of the second access method includes one or more of the following: the type of access network corresponding to the second access method; the terminal device identifier corresponding to the second access method; and the RAT type corresponding to the second access method.

[0225] In some implementations, the first core network device is AMF and the second core network device is SMF.

[0226] 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.

[0227] 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.

[0228] 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.

[0229] 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.

[0230] 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.

[0231] 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.

[0232] 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.

[0233] It should be understood that the terms used in this application are intended only to explain the specific embodiments of this application and are not intended to limit this application. The terms "first," "second," and so on in the specification, claims, and accompanying drawings of this application are used to distinguish between different objects, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0234] 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.

[0235] 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.

[0236] 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.

[0237] 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.

[0238] 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.

[0239] 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.

[0240] 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.

[0241] 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.

[0242] 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.

[0243] 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.

[0244] 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)).

[0245] 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: The terminal device sends first information to a first core network device, where the first information is used to determine that a first access mode and a second access mode are used for multi-access communication of the terminal device.

2. The method according to claim 1, characterized in that, The first information carries one or more of the following: Identification information of the terminal device; Information about the first access mode; Information about the second access mode; Information used to indicate the association between the first access mode and the second access mode.

3. The method according to claim 2, characterized in that, The identification information of the terminal device includes one or more of the following: The IP address of the terminal device; The user subscription identifier corresponding to the terminal device; The association identifier of the terminal device, where the association identifier is used to determine the association between the first access mode and the second access mode.

4. The method according to any one of claims 1 to 3, characterized in that The first information is carried in a first request, and the first request is used to request the establishment or modification of a first session.

5. The method according to claim 4, wherein The first information carries a first indication, and the first indication is used to indicate that the first session is for the multi-access communication.

6. The method according to any one of claims 1-5, characterized in that, The first information carries the session identifier of a second session, and the second session corresponds to the second access mode.

7. The method according to any one of claims 1-6, characterized in that, The method further includes: In response to sending the first information, the terminal device receives second information, where the second information is used to indicate the traffic splitting rule corresponding to the multi-access communication and / or the handover rule corresponding to the multi-access communication. Among them, the traffic splitting rule is used to indicate the traffic splitting method between the first access mode and the second access mode, and the handover rule is used to indicate the timing of traffic handover between the first access mode and the second access mode.

8. The method according to claim 7, wherein The second information further includes the information about the first access mode and / or the information about the second access mode.

9. The method according to claim 8, characterized in that, The second information is carried in a response message to the first request, and the first request is used to request the establishment or modification of a first session.

10. The method according to claim 2 or 8, characterized in that, The information about the first access mode includes one or more of the following: The type of access network corresponding to the first access mode; The terminal device identifier corresponding to the first access mode; The RAT type corresponding to the first access mode.

11. The method according to claim 2 or 8, characterized in that, The information about the second access mode includes one or more of the following: The type of access network corresponding to the second access mode; The terminal device identifier corresponding to the second access mode; The RAT type corresponding to the second access mode.

12. The method according to any one of claims 1-11, characterized in that, The first core network device is an AMF.

13. A method for wireless communication, characterized in that, Including: The first core network device receives the first information sent by the terminal device, where the first information is used to determine that a first access mode and a second access mode are used for multi-access communication of the terminal device.

14. The method according to claim 13, wherein The first information carries one or more of the following: Identification information of the terminal device; Information about the first access mode; Information about the second access mode; Information used to indicate the association between the first access mode and the second access mode.

15. The method according to claim 13, wherein The identification information of the terminal device includes one or more of the following: The IP address of the terminal device; The user subscription identifier corresponding to the terminal device; The association identifier of the terminal device, where the association identifier is used to determine the association between the first access mode and the second access mode.

16. The method according to any one of claims 12 - 15, characterized in that, The first information is carried in a first request for requesting to establish or modify a first session.

17. The method according to claim 16, wherein The first information carries a first indication for indicating that the first session is for the multi-access communication.

18. The method according to any one of claims 12-17, characterized in that, The first information carries a session identifier of a second session corresponding to the second access mode.

19. The method according to any one of claims 12-18, characterized in that, The method further includes: The first core network device sends third information to a second core network device, where the third information is determined based on the first information and is used to indicate that the first access mode and the second access mode are for the multi-access communication of the terminal device.

20. The method according to claim 19, characterized in that, If the information of the first access mode carried in the first information includes a terminal device identifier corresponding to the first access mode, the method further includes: The first core network device determines type information corresponding to the first access mode based on the terminal device identifier corresponding to the first access mode, where the type information includes the type of the access network and / or the RAT type; The first core network device sending the third information to the second core network device includes: The first core network device sends third information to the second core network device, and the third information carries the type information corresponding to the first access mode.

21. The method according to claim 19 or 20, characterized in that, The method further includes: The first core network device receives response information sent by the second core network device for the third information, where the response information for the third information is used to indicate a traffic splitting rule corresponding to the multi-access communication and / or a handover rule corresponding to the multi-access communication, where the traffic splitting rule is used to indicate a traffic splitting manner between the first access mode and the second access mode, and the handover rule is used to indicate an opportunity for traffic to be switched between the first access mode and the second access mode.

22. The method according to claim 21, wherein The response information for the third information further includes information of the first access mode and / or information of the second access mode.

23. The method according to claim 21 or 22, characterized in that, The method further includes: The first core network device sends second information to the terminal device, where the second information is determined based on the response information for the third information.

24. The method according to claim 14 or 20, characterized in that The information of the first access mode includes one or more of the following: The type of the access network corresponding to the first access mode; The terminal device identifier corresponding to the first access mode; The RAT type corresponding to the first access mode.

25. The method according to claim 14 or 20, characterized in that The information of the second access mode includes one or more of the following: The type of the access network corresponding to the second access mode; The terminal device identifier corresponding to the second access mode; The RAT type corresponding to the second access mode.

26. The method according to any one of claims 13 - 25, characterized in that, The first core network device is an AMF.

27. A method for wireless communication, characterized in that, including: The second core network device receives the third information sent by the first core network device, where the third information is used to determine that the first access mode and the second access mode are for the multi-access communication of the terminal device.

28. The method according to claim 27, wherein The third information carries one or more of the following: The identification information of the terminal device; The information of the first access mode; The information of the second access mode; Information for indicating the association between the first access mode and the second access mode.

29. The method according to claim 28, characterized in that, The identification information of the terminal device includes one or more of the following: The IP address of the terminal device; The user subscription identifier corresponding to the terminal device; The association identifier of the terminal device, where the association identifier is used to determine the association between the first access mode and the second access mode.

30. The method according to any one of claims 27-29, characterized in that, The third information is carried in a first request, and the first request is used to request the establishment or modification of a first session.

31. The method according to claim 30, characterized in that, The third information carries a first indication, and the first indication is used to indicate that the first session is for the multi-access communication.

32. The method according to any one of claims 27-31, characterized in that, The third information carries the session identifier of a second session, and the second session corresponds to the second access mode.

33. The method according to any one of claims 27-32, characterized in that, The method further includes: The second core network device sends response information for the third information to the first core network device, and the response information for the third information is used to indicate the traffic splitting rule corresponding to the multi-access communication, and / or the handover rule corresponding to the multi-access communication, wherein, the traffic splitting rule is used to indicate the traffic splitting method between the first access mode and the second access mode, and the handover rule is used to indicate the timing of traffic handover between the first access mode and the second access mode.

34. The method according to claim 33, characterized in that, The response information for the third information further includes the information of the first access mode, and / or the information of the second access mode.

35. The method according to claim 28 or 34, characterized in that, The information of the first access mode includes one or more of the following: The type of access network corresponding to the first access mode; The terminal device identifier corresponding to the first access mode; The RAT type corresponding to the first access mode.

36. The method according to claim 28 or 34, characterized in that, The information of the second access mode includes one or more of the following: The type of access network corresponding to the second access mode; The terminal device identifier corresponding to the second access mode; The RAT type corresponding to the second access mode.

37. The method according to any one of claims 27-36, characterized in that, The first core network device is an AMF, and the second core network device is an SMF.

38. A terminal device, characterized in that, Includes: A sending unit, configured to send first information to a first core network device, where the first information is used to determine that a first access mode and a second access mode are used for the multi-access communication of the terminal device.

39. The terminal device according to claim 38, wherein The first information carries one or more of the following: The identification information of the terminal device; The information of the first access mode; The information of the second access mode; Information used to indicate the association between the first access mode and the second access mode.

40. The terminal device according to claim 39, wherein The identification information of the terminal device includes one or more of the following: The IP address of the terminal device; The user subscription identifier corresponding to the terminal device; The association identifier of the terminal device, where the association identifier is used to determine the association between the first access mode and the second access mode.

41. The terminal device according to any one of claims 38 to 40, characterized in that, The first information is carried in a first request, and the first request is used to request the establishment or modification of a first session.

42. The terminal device according to claim 41, wherein, The first information carries a first indication, and the first indication is used to indicate that the first session is for the multi-access communication.

43. The terminal device according to any one of claims 38 to 42, characterized in that, The first information carries the session identifier of a second session, and the second session corresponds to the second access mode.

44. The terminal device according to any one of claims 38-43, characterized in that, The terminal device further includes: In response to sending the first information, a receiving unit, configured to receive second information, where the second information is used to indicate the traffic splitting rule corresponding to the multi-access communication, and / or the handover rule corresponding to the multi-access communication, Among them, the traffic splitting rule is used to indicate the traffic splitting method between the first access mode and the second access mode, and the switching rule is used to indicate the timing of traffic switching between the first access mode and the second access mode.

45. The terminal device according to claim 44, wherein, The second information further includes information about the first access mode and / or information about the second access mode.

46. The terminal device according to claim 45, characterized in that, The second information is carried in a response message for a first request, and the first request is used to request the establishment or modification of a first session.

47. The terminal device according to claim 39 or 45, characterized in that, The information about the first access mode includes one or more of the following: The type of access network corresponding to the first access mode; The terminal device identifier corresponding to the first access mode; The RAT type corresponding to the first access mode.

48. The terminal device according to claim 39 or 45, characterized in that, The information about the second access mode includes one or more of the following: The type of access network corresponding to the second access mode; The terminal device identifier corresponding to the second access mode; The RAT type corresponding to the second access mode.

49. The terminal device according to any one of claims 38-48, characterized in that, The first core network device is the AMF.

50. A core network device, characterized in that, The core network device is the first core network device, including: A receiving unit, configured to receive first information sent by a terminal device, where the first information is used to determine a first access mode and a second access mode for multi-access communication of the terminal device.

51. The core network device according to claim 50, characterized in that, The first information carries one or more of the following: The identification information of the terminal device; The information about the first access mode; The information about the second access mode; Information used to indicate the association between the first access mode and the second access mode.

52. The core network device according to claim 51, wherein The identification information of the terminal device includes one or more of the following: The IP address of the terminal device; The user subscription identifier corresponding to the terminal device; The association identifier of the terminal device, where the association identifier is used to determine the association between the first access mode and the second access mode.

53. The core network device according to any one of claims 50-52, characterized in that, The first information is carried in a first request, and the first request is used to request the establishment or modification of a first session.

54. The core network device according to claim 53, characterized in that, The first information carries a first indication, and the first indication is used to indicate that the first session is for the multi-access communication.

55. The core network device according to any one of claims 50-54, characterized in that, The first information carries the session identifier of a second session, and the second session corresponds to the second access mode.

56. The core network device according to any one of claims 50-55, characterized in that, The core network device further includes: A first sending unit, configured to send third information to a second core network device, where the third information is determined based on the first information, and the third information is used to indicate a first access mode and a second access mode for multi-access communication of the terminal device.

57. The core network device according to claim 56, wherein, If the information about the first access mode carried in the first information includes the terminal device identifier corresponding to the first access mode, the core network device further includes: A processing unit, configured to determine the type information corresponding to the first access mode based on the terminal device identifier corresponding to the first access mode, where the type information includes the type of access network and / or the RAT type; The first sending unit, configured to send third information to a second core network device, where the third information carries the type information corresponding to the first access mode corresponding.

58. The core network device according to claim 56 or 57, characterized in that, The receiving unit is configured to: Receive the response information for the third information sent by the second core network device, where the response information for the third information is used to indicate the traffic splitting rule corresponding to the multi-access communication and / or the handover rule corresponding to the multi-access communication. Wherein, the traffic splitting rule is used to indicate the traffic splitting method between the first access mode and the second access mode, and the handover rule is used to indicate the timing of traffic handover between the first access mode and the second access mode.

59. The core network device according to claim 58, characterized in that, The response information for the third information further includes the information of the first access mode and / or the information of the second access mode.

60. The core network device according to claim 58 or 59, characterized in that, The first sending unit is configured to send second information to the terminal device, where the second information is determined based on the response information for the third information.

61. The core network device according to claim 51 or 59, characterized in that, The information of the first access mode includes one or more of the following: The type of access network corresponding to the first access mode; The terminal device identifier corresponding to the first access mode; The RAT type corresponding to the first access mode.

62. The core network device according to claim 51 or 59, characterized in that, The information of the second access mode includes one or more of the following: The type of access network corresponding to the second access mode; The terminal device identifier corresponding to the second access mode; The RAT type corresponding to the second access mode.

63. The core network device according to any one of claims 50-62, characterized in that, The first core network device is the AMF.

64. A core network device, characterized in that, The core network device is the second core network device, including: A receiving unit, configured to receive third information sent by the first core network device, where the third information is used to determine the first access mode and the second access mode for the multi-access communication of the terminal device.

65. The core network device according to claim 64, characterized in that, The third information carries one or more of the following: The identification information of the terminal device; The information of the first access mode; The information of the second access mode; The information used to indicate the association between the first access mode and the second access mode.

66. The core network device according to claim 65, wherein, The identification information of the terminal device includes one or more of the following: The IP address of the terminal device; The user subscription identifier corresponding to the terminal device; The association identifier of the terminal device, where the association identifier is used to determine the association between the first access mode and the second access mode.

67. The core network device according to any one of claims 64-66, characterized in that, The third information is carried in a first request, where the first request is used to request the establishment or modification of a first session.

68. The core network device according to claim 67, characterized in that, The third information carries a first indication, where the first indication is used to indicate that the first session is for the multi-access communication.

69. The core network device according to any one of claims 64-68, characterized in that, The third information carries the session identifier of a second session, where the second session corresponds to the second access mode.

70. The core network device according to any one of claims 64-69, characterized in that, The core network device further includes: A sending unit, configured to send response information for the third information to the first core network device, where the response information for the third information is used to indicate the traffic splitting rule corresponding to the multi-access communication and / or the handover rule corresponding to the multi-access communication. Wherein, the traffic splitting rule is used to indicate the traffic splitting method between the first access mode and the second access mode, and the handover rule is used to indicate the timing of traffic handover between the first access mode and the second access mode.

71. The core network device according to claim 70, characterized in that, The response information for the third information further includes the information of the first access mode and / or the information of the second access mode.

72. The core network device according to claim 65 or 71, characterized in that, The information of the first access mode includes one or more of the following: The type of the access network corresponding to the first access mode; The terminal device identifier corresponding to the first access mode; The RAT type corresponding to the first access mode.

73. The core network device according to claim 65 or 71, characterized in that, The information of the second access mode includes one or more of the following: The type of the access network corresponding to the second access mode; The terminal device identifier corresponding to the second access mode; The RAT type corresponding to the second access mode.

74. The core network device according to any one of claims 64-73, characterized in that, The first core network device is an AMF, and the second core network device is an SMF.

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 terminal device executes the method according to any one of claims 1-12.

76. A core network 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 13-37.

77. A device, characterized in that, It includes a processor, which is used to call a program from a memory, so that the device executes the method according to any one of claims 1-37.

78. A chip, characterized in that, It includes a processor, which is used to call a program from a memory, so that the device installed with the chip executes the method according to any one of claims 1-37.

79. A computer-readable storage medium, characterized in that, A program is stored thereon, and the program enables a computer to execute the method according to any one of claims 1-37.

80. A computer program product, characterized in that, It includes a program, and the program enables a computer to execute the method according to any one of claims 1-37.

81. A computer program, characterized in that, The computer program enables a computer to execute the method according to any one of claims 1-37.

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