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WO2025166782A1 - Procédé de communication sans fil, dispositif terminal et dispositif de réseau central - Google Patents

Procédé de communication sans fil, dispositif terminal et dispositif de réseau central

Info

Publication number
WO2025166782A1
WO2025166782A1 PCT/CN2024/077057 CN2024077057W WO2025166782A1 WO 2025166782 A1 WO2025166782 A1 WO 2025166782A1 CN 2024077057 W CN2024077057 W CN 2024077057W WO 2025166782 A1 WO2025166782 A1 WO 2025166782A1
Authority
WO
WIPO (PCT)
Prior art keywords
information
terminal device
message
network
network element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/077057
Other languages
English (en)
Chinese (zh)
Inventor
王亚鑫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to PCT/CN2024/077057 priority Critical patent/WO2025166782A1/fr
Publication of WO2025166782A1 publication Critical patent/WO2025166782A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery

Definitions

  • the present application relates to the field of communication technology, and more specifically, to a wireless communication method, terminal equipment, and core network equipment.
  • terminal devices need to access multiple 3rd Generation Partnership Project (3GPP) networks simultaneously to ensure service continuity.
  • 3GPP 3rd Generation Partnership Project
  • a dual registration mechanism was introduced.
  • this dual registration and corresponding switching mechanism can only be implemented based on specific scenarios and is not applicable to a variety of terminal device application scenarios.
  • the present application provides a wireless communication method, terminal equipment, and core network equipment.
  • the following introduces various aspects involved in the present application.
  • a wireless communication method including: a first terminal device receives a first message sent by a first network element of a core network, the first message includes first policy information, and the first policy information is used to indicate access network information corresponding to one or more services.
  • a wireless communication method including: a first network element of a core network sends a first message to a first terminal device, the first message includes first policy information, and the first policy information is used to indicate access network information corresponding to one or more services.
  • a wireless communication method including: a second network element of a core network receives a fourth message sent by a first network element of the core network, wherein the fourth message is used to request first policy information of a first terminal device, and the first policy information is used to indicate access network information corresponding to one or more services.
  • a terminal device which includes a first terminal device, and the terminal device includes: a receiving unit, used to receive a first message sent by a first network element of a core network, the first message containing first policy information, and the first policy information is used to indicate access network information corresponding to one or more services.
  • a core network device which is the first network element of the core network, and the core network device includes: a first sending unit, used to send a first message to a first terminal device, the first message includes first policy information, and the first policy information is used to indicate the access network information corresponding to one or more services.
  • a core network device which is the second network element of the core network, and the core network device includes: a first receiving unit, used to receive a fourth message sent by the first network element of the core network, and the fourth message is used to request first policy information of the first terminal device, and the first policy information is used to indicate the access network information corresponding to one or more services.
  • a terminal device 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.
  • a core network device 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.
  • an embodiment of the present application provides a communication system, which includes the above-mentioned terminal device and/or core network device.
  • 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.
  • 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.
  • a communication device for example, a terminal device or a core network device
  • 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.
  • the computer program product may be a software installation package.
  • 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.
  • FIG1 is a diagram illustrating an example of a system architecture of a wireless communication system to which an embodiment of the present application may be applied.
  • FIG. 2 is a system architecture diagram of the fifth generation (5G) communication system.
  • FIG3 is a schematic diagram of the dual registration process.
  • FIG4 is a flow chart of a wireless communication method according to an embodiment of the present application.
  • FIG5 is a flowchart of a possible implementation of the method shown in FIG4 .
  • FIG6 is a flowchart of another possible implementation of the method shown in FIG4 .
  • FIG7 is a schematic diagram of the structure of the terminal device provided in an embodiment of the present application.
  • FIG8 is a schematic structural diagram of a core network device provided in an embodiment of the present application.
  • FIG9 is a schematic structural diagram of another core network device provided in an embodiment of the present application.
  • FIG10 is a schematic structural diagram of a communication device provided in an embodiment of the present application.
  • FIG. 1 is a diagram illustrating an example of the system architecture of a wireless communication system 100 to which an embodiment of the present application may be applied.
  • the wireless communication system 100 may include a network device 110 and a terminal device 120.
  • the network device 110 may be a device that communicates with the terminal device 120.
  • the network device 110 may provide network coverage for a specific geographical area and may communicate with the terminal device 120 located within the coverage area.
  • the terminal device 120 may access a network (e.g., a wireless network) through the network device 110.
  • the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.
  • the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth-generation (5G) systems or new radio (NR), long-term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, etc.
  • 5G fifth-generation
  • LTE long-term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • the technical solutions provided by the present application can also be applied to future communication systems, such as sixth-generation mobile communication systems, satellite communication systems, etc.
  • the terminal device in the embodiments of the present application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • remote station remote terminal
  • mobile device user terminal
  • terminal wireless communication device
  • user agent user agent
  • the terminal device in the embodiments of the present application may be a device that provides voice and/or data connectivity to a user and can be used to connect people, objects, and machines, such as a handheld device or vehicle-mounted device with wireless connection capabilities.
  • the terminal device in the embodiments of the present application can be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc.
  • the terminal device can be used to act as a base station.
  • the terminal device can act as a dispatching entity that provides sidelink signals between terminal devices in vehicle-to-everything (V2X) or device-to-device (D2D) systems.
  • V2X vehicle-to-everything
  • D2D device-to-device
  • cell phones and cars use sidelink signals to communicate with each other.
  • Cell phones and smart home devices communicate with each other without having to relay the communication signals through a base station.
  • the network device in the embodiment of the present application may be a device for communicating with a terminal device.
  • the network device may be, for example, an access network device or a wireless access network device.
  • the network device may be a base station.
  • the base station may broadly cover the following various names, or be replaced with the following names: Node B (NodeB), evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmission point (TRP), transmitting point (TP), home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, base band unit (BBU), remote radio unit (RRU), active antenna unit active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc.
  • the base station can be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof.
  • Terminal devices can communicate with each other via sidelinks.
  • Sidelink communication is also known as proximity services (ProSe) communication, unilateral communication, sidelink communication, or D2D communication.
  • ProSe proximity services
  • FIG2 is a system architecture diagram of a 5G network applicable to an embodiment of the present application.
  • the 5G system or NR network architecture released by the 3GPP standard group includes: a terminal device (also known as a UE) 201, an access network device 202 supporting 3GPP technology (including a radio access network (RAN) or access network (AN)), an access and mobility management function (AMF) network element 203, a session management function (SMF) network element 204, and a user plane function (UE) network element 205.
  • RAN radio access network
  • AN access network
  • AMF access and mobility management function
  • SMF session management function
  • UE user plane function
  • UPF policy control function
  • PCF policy control function
  • AF application function
  • DN data network
  • NSSF network slice selection function
  • AUSF authentication service function
  • UDM unified data management function
  • the network architecture shown in Figure 2 does not constitute a limitation on the 5G network architecture.
  • the 5G network architecture may include more or fewer network elements than shown, or may combine certain network elements.
  • the AN or RAN is represented in the form of (R)AN.
  • the terminal device 201 can be any terminal device in FIG1 , and will not be described in detail here.
  • Access network equipment 202 is the 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 NodeB, eNodeB, base stations in 5G mobile communication systems or NR communication systems, and base stations in future mobile communication systems.
  • QoS quality of service
  • UPF network element 205, AMF network element 203, SMF network element 204, and PCF network element 206 are network elements of the 3GPP core network (referred to as core network elements).
  • UPF network element 205 can be called a user plane function network element, which is mainly responsible for the transmission of user data.
  • 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.
  • the UPF network element 205 can be used to forward and receive data from the terminal.
  • 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.
  • the transmission resources allocated and scheduled by the UPF network element to 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 the establishment of a channel between the access network device and the terminal.
  • 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.
  • QoS quality of service
  • the AMF network element 203 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.
  • the SMF network element 204 can be used to select user plane network elements for the terminal, redirect user plane network elements for the terminal, allocate Internet Protocol (IP) addresses 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.
  • IP Internet Protocol
  • the PCF network element 206 (or simply "PCF") is used to provide policies, such as QoS policy and slice selection policy, to the AMF network element 203 and the SMF network element 204.
  • the PCF is responsible for formulating policies related to mobility management, session management, and billing for terminal devices.
  • the AF network element 209 (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.
  • NSSF 211 is used for network slice selection and supports the following functions: selecting the set of network slice instances to serve the UE; determining the allowed network slice selection assistance information (NSSAI), and determining the number of network slice instances to be served when necessary.
  • NSSAI allowed network slice selection assistance information
  • S-NSSAI subscribed single-network slice selection assistance information
  • AUSF 210 is used to receive the request from AMF 203 to authenticate the terminal, request the key from UDM 207, and then forward the issued key to AMF 203 for authentication processing.
  • UDM 207 includes functions such as the generation and storage of user contract data, management of authentication data, and supports interaction with external third-party servers.
  • the terminal device establishes an access layer connection with the AN through the Uu interface, exchanging access layer messages and wireless data transmission.
  • the terminal device also establishes a non-access stratum (NAS) connection with the AMF network element through the N1 interface, exchanging NAS messages.
  • NAS non-access stratum
  • the AMF network element is also responsible for forwarding session management-related messages between the terminal device and the SMF network element.
  • the UPF network element transmits data with the external data network through the N6 interface and with the AN through the N3 interface.
  • each network element in Figure 2 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).
  • a platform e.g., a cloud platform.
  • 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.
  • a terminal device may need to access multiple 3GPP networks simultaneously, switching and splitting traffic between the two access networks.
  • a terminal device can access both a 4G network and a 5G network.
  • a terminal device can access two 5G networks of public land mobile networks (PLMNs) simultaneously.
  • PLMNs public land mobile networks
  • the basic requirement in this scenario is to allow the terminal device to register in the two access networks at the same time and maintain a dual registration state.
  • 5G and LTE system compatibility technologies provide support. Specifically, a single terminal device can be registered in both 5G and LTE access networks simultaneously, allowing for mobility-induced network switching.
  • the dual registration process is schematically illustrated below with reference to Figure 3.
  • FIG 3 illustrates the interaction of multiple devices.
  • these devices also include the evolved universal mobile telecommunications system (UMTS) terrestrial radio access network (E-UTRAN), the next generation RAN (NG-RAN), the evolved packet core (EPC), the packet data network gateway-control plane (PGW-C), and the home subscriber server (HSS).
  • UMTS evolved universal mobile telecommunications system
  • NG-RAN next generation RAN
  • EPC evolved packet core
  • PGW-C packet data network gateway-control plane
  • HSS home subscriber server
  • a UE attaches and registers to the EPC (LTE) access network.
  • the EPC assigns the UE a 4G globally unique temporary UE identity (GUTI), or 4G-GUTI. This is a temporary UE ID assigned by the MME and can be used to identify the MME and UE.
  • GUI globally unique temporary UE identity
  • step S302 the UE sends a registration request to the NG-RAN.
  • step S303 the NG-RAN performs AMF selection.
  • step S304 the NG-RAN sends a registration request to the new AMF.
  • step S305 registration procedure.
  • the UE accesses the 5G network and sends a registration request to the 5G core network.
  • the UE uses the 5G-GUTI converted from the 4G-GUTI as its temporary identifier and reports it to the 5G core network.
  • step S306 the AMF registers the UE information with the UDM+HSS and notifies the network element not to cancel the UE's LTE registration.
  • the UE's LTE registration is implemented through the MME.
  • step S310 the UE requests a protocol data unit (PDU) session establishment procedure to establish a PDU session (5G access network).
  • PDU protocol data unit
  • step S311 the PGW-C+SMF network element initiates release of transferred packet data network (PDN) connection to release the PDN connection (LTE access network).
  • PDN packet data network
  • the process shown in Figure 3 applies to dual registration mode for a single UE.
  • the core network requires the UE to report associated access network information during registration in order to interact with other network elements.
  • the GUTI information reported by the UE can include information about the MME.
  • the network element receiving the registration information when interacting with the unified management network element (UDM+HSS), can simultaneously obtain information about both access networks.
  • UDM+HSS unified management network element
  • This session control network element can assign the same IP address to the two connected sessions based on the association between the two access networks, ensuring service continuity.
  • This technology relies on the same UE and the GUTI information being associated between the two access networks, which requires that the two access networks be operated by the same operator.
  • some operators recommend using two subscriber identity modules (SIM) cards to access two networks, which can also be regarded as two associated UEs accessing two networks at the same time.
  • SIM subscriber identity modules
  • Multi-USIM Multi-Universal Subscriber Identity Module
  • a single mobile terminal can be equipped with multiple (usually two) USIM cards.
  • the two USIM cards can independently register with the access network, establish corresponding sessions, and conduct independent services. It should be noted that there is no association between the two USIM cards; from the network's perspective, they appear to be two independent UEs.
  • This dual registration and handover mechanism supports IP preservation to ensure that the IP address remains unchanged before and after the handover, thereby ensuring service continuity.
  • this mechanism is only applicable to scenarios where a single SIM card is handing over between the EPC and the 5G core (5GC), and only supports handovers triggered by mobility.
  • the dual registration process has many application constraints and cannot be applied to a wide range of scenarios, resulting in limited flexibility. For example, dual registration cannot be applied in scenarios where both access networks are 5G access networks (using multiple USIM cards). In another example, when a terminal device is connected to two access networks simultaneously, the dual registration process cannot support the offloading of different services to sessions on different access networks.
  • an embodiment of the present application provides a wireless communication method.
  • a first terminal device can determine access network information corresponding to one or more services based on first policy information sent by a first network element of the core network, which helps to achieve service diversion, thereby better meeting requirements such as service continuity and increased capacity.
  • the following describes the wireless communication method of an embodiment of the present application in conjunction with Figure 4.
  • Figure 4 is introduced from the perspective of the interaction between the first terminal device and the first network element of the core network.
  • the first terminal device may be a communication device connected to multiple access networks.
  • the first terminal device may be a communication device that accesses multiple networks through multiple access network devices.
  • the first terminal device may be a device with multiple SIM cards.
  • the first terminal device may be one of multiple associated terminal devices connected to multiple access networks. That is, the terminal device may be associated with multiple terminal devices connected to multiple access networks, with the first terminal device being one of the multiple terminal devices. For example, if the terminal device has multiple SIM cards, the first terminal device may be a terminal device represented by one of the SIM cards.
  • the terminal device associated with the first terminal device is a dual SIM card device, one of the dual SIM cards corresponds to the first terminal device, and the other card corresponds to the second terminal device.
  • the first terminal device or a terminal device associated with the first terminal device may be provided with multiple USIM cards, and the device may access multiple access networks through different USIM cards in the multiple USIM cards.
  • the terminal device may be provided with USIM1 and USIM2, and accordingly, access the first access network through USIM1 and access the second access network through USIM2.
  • the second terminal device associated with the first terminal device may be a terminal device corresponding to another SIM card or USIM card on the terminal device where the SIM card or USIM card corresponding to the first terminal device is located.
  • the first terminal device and the second terminal device may be terminal devices corresponding to different SIM cards or USIM cards on the same terminal device.
  • the first terminal device and the second terminal device may correspond to different access networks.
  • the first message is a message sent by the first network element to the first terminal device via a corresponding interface.
  • the first network element is an AMF
  • the first message can be sent to the first terminal device via an N1 interface.
  • the one or more services indicated by the first policy information may be services that communicate based on a multi-access service.
  • the policy in the first policy information may also be referred to as a "multi-access policy” or a "multi-access selection policy.”
  • the multi-access service is also referred to as “dual steer communication.” This type of communication is intended to allow the user's services to be flexibly diverted between multiple access networks. Accordingly, the policy in the first policy information may be referred to as a "multi-access policy” or a “multi-access selection policy.”
  • the strategy can also be called “dual steer strategy”.
  • the access network information corresponding to the one or more services refers to information about the one or more access networks corresponding to the one or more services.
  • the first policy information includes information about the one or more services.
  • the one or more services may include a first service.
  • the first service is any service among the one or more services.
  • the first policy information may indicate the first service based on one or more of the following: an application identity (ID) of the first service, address information of a data packet in the first service, and port information of a data packet in the first service.
  • ID application identity
  • the information of the first service may be indicated by descriptor information.
  • the descriptor information may be represented by information such as application ID, source/destination address, port, etc.
  • the descriptor information may be represented by an IP quintuple or triplet.
  • the first service may be a current service or a service that may be executed subsequently.
  • one or more services may also refer to one or more services. That is, the first policy information may be used to indicate access network information corresponding to the one or more services.
  • the access network information includes information about an access network corresponding to the first terminal device or the second terminal device.
  • the access network information may include one or more of the following information: an access network type (AN type), a radio access technology (RAT type), and PLMN information.
  • the access network type may include a 3GPP access network and a non-3GPP (non-3GPP) access network, which is not limited herein.
  • 3GPP access networks may include access networks in 4G networks, access networks in 5G networks, and access networks in non-terrestrial networks (NTNs).
  • NTNs non-terrestrial networks
  • Non-3GPP access networks include, for example, wireless fidelity (Wi-Fi).
  • the access network can be a geostationary earth orbit (GEO) access network.
  • GEO geostationary earth orbit
  • LEO low-earth orbit
  • MEO medium-earth orbit
  • a terminal device can access a 3GPP network using the NR-GEO access method.
  • the type of radio access technology may include one or more of the following: satellite-based RAT, NR RAT, Wi-Fi RAT, and E-UTRAN RAT.
  • satellite-based RAT is NR-GEO RAT.
  • the PLMN information may include a PLMN ID, such as PLMN A, PLMN B, or PLMN C.
  • the first policy information further indicates priority information and/or area information corresponding to one or more services.
  • the priority information includes the priority level corresponding to the service or priority-related information.
  • the area information may be specific area information (location) or associated information of area information.
  • the specific area information may be, for example, specific geographic location information, tracking area (TA) information, or cell information.
  • TA tracking area
  • the first policy information may specify an access network selected by a specific service.
  • the first policy information may instruct a specific service to select a specific access network for transmission.
  • the first policy information may specify one or more access networks corresponding to one or more services.
  • the first policy information may specify multiple access networks available to the first terminal device.
  • the first policy information may specify multiple access networks for a first service among one or more services, so that the first terminal device can select an access network from the multiple available access networks when triggering the first service.
  • the first policy information is selection policy information.
  • the first terminal device or the second terminal device can determine, based on the policy, which access network to use to send the data packet or perform the service, thereby achieving service offloading.
  • the first policy information may be indicated in a table.
  • Tables 1 to 3 are three possible implementations of the table corresponding to the first policy information.
  • the first policy information in the first message can be used to determine the initial policy or to update the policy. That is, the first policy information received by the first terminal device can be the initial policy information or the policy information updated by the second network element.
  • the first terminal device can determine the SIM card and access network for executing the service based on the service traffic.
  • the first terminal device can determine which access network to send the data packet through based on the application or data packet that currently triggers the service and the access network information corresponding to the current first terminal device and the second terminal device.
  • the first terminal device and the second terminal device may initiate a session establishment request according to the selected access network to establish a corresponding session to transmit data packets.
  • the first network element may send the first message based on a request message from the first terminal device.
  • the request message may be a second message.
  • the first terminal device sends the second message to the first network element before receiving the first message. That is, the first network element receives the second message from the first terminal device before sending the first message to the first terminal device.
  • the second message is used by the first terminal device to send a request for a multi-access service to the first network element.
  • the first network element when the first network element sends the first policy information to the first terminal device, it can be sent through a feedback message of the second message or through a dedicated downlink message.
  • the first network element can send the first message to the first terminal device by feedback registration/service request response.
  • the second message includes first information, where the first information is used to request service transmission through multiple access networks.
  • the second message may be a registration request message.
  • the first terminal device may send a registration request to the first network element via the second message.
  • the registration request may include the first information to request a multi-access service.
  • the second message may be a multiple access service request message.
  • the first message may be multiple access indication information, and thus may also be referred to as multiple access indication information or "dual steer" indication information, to request multiple access services.
  • the first information may be explicit indication information or may be indicated in an implicit form.
  • the first information when the first information includes information about a second terminal device associated with the first terminal device, it may indicate a request for a multi-access service.
  • the first information may include the ID information of the second terminal device and/or the access network information of the second terminal device for implicit indication.
  • the first network element may use the first information to perform an authorization check.
  • the first network element may query the UDM or HSS for corresponding multi-access subscription information.
  • the first network element may also obtain the ID information of the second terminal device from the subscription information of the UDM or HSS.
  • the second terminal device may also send a request message to the registration management network element of the core network to subscribe to notifications of policy selection from the policy management network element through the registration management network element.
  • the first message may not include ID information of the associated terminal device.
  • the first network element may send a request message for the first policy information to the second network element based on the received multiple request messages.
  • the first network element may send a first message to the first terminal device and the second terminal device.
  • the second terminal device may send a third message to a third network element, wherein the third message includes the first information, to request service transmission through multiple access networks.
  • the third network element may be a registration management network element in the core network.
  • the third network element may be Think AMF or MME.
  • the third message may also be a registration request message or a multi-access service request message, which will not be described in detail here.
  • the third message may not include the first information. That is, the third message sent by the second terminal device may reuse an existing request message. In this scenario, the third message does not carry the multi-access request indication information and/or associated terminal device information.
  • the policy management network element may determine that the second terminal device is associated with the first terminal device based on the association information sent by the first terminal device when subscribing.
  • the third network element when the third network element receives the first policy information sent by the policy management network element, the third network element may send the first policy information to the second terminal device.
  • the above describes the method for the first terminal device to offload services according to the first policy information in conjunction with Figure 4.
  • the following describes the method for delivering the first policy information from the perspective of multiple network elements in the core network.
  • the policy management network element may only feed back the first policy information to the first network element or the third network element.
  • the policy management network element may be represented as a second network element in the core network.
  • the second network element may be a PCF.
  • the second network element may also be another core network element in a future communication system with similar functions to the PCF.
  • the first network element sends a fourth message to the second network element, requesting the first policy information.
  • the fourth message is used to send a policy acquisition request to the second network element and, therefore, may also be referred to as a subscription request.
  • the second network element After receiving the fourth message, the second network element sends a fifth message to the first network element, the fifth message including the first policy information.
  • the fourth message includes one or more of the following information: access network information of the first terminal device; information of the second terminal device associated with the first terminal device.
  • the access network information of the first terminal device may include the access network type, RAT type and/or the current serving PLMN.
  • the information of the second terminal device associated with the first terminal device may include the ID information of the second terminal device and/or the access network information corresponding to the second terminal device, which is not limited here.
  • the second network element may send the fifth message to the first network element in real time after receiving the fourth message.
  • the first terminal device may promptly obtain the access network selection policy (first policy information) from the core network.
  • the first terminal device may first select an access network according to the policy, and then initiate a session establishment request.
  • This implementation may support the core network to specify sending policies corresponding to different data streams, and the terminal device may select a suitable access network to establish a session and send the corresponding data packets.
  • the second network element may delay sending the fifth message to the first network element after receiving the fourth message. For example, the first network element may first subscribe to the first policy information through the fourth message, and after generating the first policy information, the second network element may send the first policy information to the first network element through the fifth message.
  • the third network element may send a sixth message to the second network element of the core network, where the sixth message is used to request policy information of the second terminal device.
  • the sixth message includes one or more of the following information: access network information of the second terminal device; information of the first terminal device associated with the second terminal device.
  • the access network information of the second terminal device may include the access network type, the RAT type and/or the current serving PLMN.
  • the information of the first terminal device associated with the second terminal device may include the ID information of the first terminal device and/or the access network information corresponding to the first terminal device, which is not limited here.
  • the second network element may send the fifth message to the first network element after receiving the fourth message and the sixth message.
  • the core network obtains the associated information from the subscription request of the first terminal device, and when the second terminal device also makes a policy request, the core network determines the selection policy based on the access network information of the first terminal device and the second terminal device and issues it. In other words, the first terminal device and the second terminal device The core network will only issue the first policy information after both devices have registered or requested it. This implementation does not issue the first policy information in real time when a single terminal device subscribes to a policy request, but waits until both associated terminal devices have accessed the network before configuring and issuing the first policy information based on the access networks of the two terminal devices.
  • the first policy information sent by the second network element to the first network element may be determined based on current access network information of the first terminal device and/or the second terminal device. For example, the first policy information may be determined based on current access network information of the first terminal device.
  • the current access network information may be carried in the policy request sent by the first network element or the third network element.
  • the fourth message or the sixth message includes the access network information.
  • the second network element may obtain the access network information of the current terminal device from other network elements of the core network.
  • the above describes the method for the first terminal device to obtain the first policy information from multiple interaction perspectives.
  • the core network can issue the first policy information after receiving a policy subscription request from a terminal device, or select and issue the policy after receiving policy subscription requests from two associated terminal devices.
  • Figure 5 is a flowchart of a possible implementation of an embodiment of the present application.
  • the first terminal device is UE1
  • the second terminal device is UE2
  • the first network element of the core network is AMF1
  • the second network element is PCF1
  • the third network element is AMF2.
  • UE1 and UE2 are associated with each other.
  • step S510 UE1 sends a registration request/multi-access service request, i.e., a second message, to AMF1 .
  • the second message may include multi-access indication information.
  • step S520 AMF1 interacts with UDM to complete the authorization/subscription check of UE1.
  • step S530 AMF1 sends a multi-access policy acquisition request, i.e., a fourth message, to PCF1.
  • the fourth message includes the access network information of UE1.
  • step S540 PCF1 feeds back the first policy information to AMF1.
  • step S550 AMF1 sends a registration response/multi-access service response to UE1, that is, a first message including the first policy information.
  • the first policy information can also be requested and obtained in the form of subscription or notification.
  • step S560 UE1 (or the mobile device (Dual Steer Device) to which UE1 belongs) determines the USIM card and access network based on the service.
  • step S570a UE1 performs a session establishment process with multiple network elements.
  • step S570b UE2 performs a session establishment process with multiple network elements.
  • Figure 6 is a flow chart of another possible implementation of an embodiment of the present application.
  • the first terminal device is UE1
  • the second terminal device is UE2
  • the first network element of the core network is AMF1
  • the second network element is PCF1
  • the third network element is AMF2.
  • UE1 and UE2 are associated with each other.
  • step S601 UE1 sends a registration request/multi-access service request, i.e., a second message, to AMF1.
  • the second message may include multi-access indication information.
  • step S602 AMF1 interacts with UDM to complete the authorization/subscription check of UE1.
  • AMF1 sends a multi-access policy acquisition request, i.e., a fourth message, to PCF1.
  • the fourth message includes the access network information of UE1 and the information of the associated UE2.
  • step S604 AMF1 sends a registration response/multi-access service response to UE1.
  • step S606 AMF2 interacts with UDM to complete the authorization/subscription check of UE2.
  • AMF2 sends a multi-access policy acquisition request, i.e., a sixth message, to PCF1.
  • the sixth message includes the access network information of UE2 and the associated information of UE1.
  • step S608 AMF2 sends a registration response/multi-access service response to UE2.
  • step S609 PCF1 feeds back the first policy information to AMF1.
  • step S610 AMF1 sends first policy information to UE1 for determining an initial policy or an updated policy.
  • step S611 UE1 (or the mobile device (Dual Steer Device) to which UE1 belongs) determines the USIM card and access network based on the service.
  • step S612a UE1 performs a session establishment process with multiple network elements.
  • step S612b UE2 performs a session establishment process with multiple network elements.
  • the receiving unit 710 can be used to receive a first message sent by a first network element of the core network, where the first message includes first policy information, and the first policy information is used to indicate access network information corresponding to one or more services.
  • the one or more services include a first service
  • the first policy information indicates the first service based on one or more of the following: application identification of the first service; address information of the data packet in the first service; port information of the data packet in the first service.
  • the terminal device 700 also includes a first sending unit, which can be used to send a second message to the first network element before receiving the first message sent by the first network element of the core network, where the second message includes first information, and the first information is used to request service transmission through multiple access networks.
  • a first sending unit which can be used to send a second message to the first network element before receiving the first message sent by the first network element of the core network, where the second message includes first information, and the first information is used to request service transmission through multiple access networks.
  • the second message is a registration request message.
  • the terminal device 700 further includes a third sending unit, configured to transmit data packets of the one or more services to an access network corresponding to the one or more services according to the first policy information.
  • a third sending unit configured to transmit data packets of the one or more services to an access network corresponding to the one or more services according to the first policy information.
  • the first network element is AMF or MME.
  • FIG 8 is a schematic diagram of a core network device according to an embodiment of the present application.
  • the core network device 800 shown in Figure 8 is a first network element of the core network.
  • the core network device 800 includes a first sending unit 810 .
  • the first sending unit 810 can be used to send a first message to a first terminal device, where the first message includes first policy information, and the first policy information is used to indicate access network information corresponding to one or more services.
  • the first policy information is further used to indicate priority information and/or area information corresponding to each of the one or more services.
  • the core network device 800 also includes a first receiving unit, which can be used to receive a second message sent by the first terminal device before sending a first message to the first terminal device, where the second message contains first information, and the first information is used to request service transmission through multiple access networks.
  • a first receiving unit which can be used to receive a second message sent by the first terminal device before sending a first message to the first terminal device, where the second message contains first information, and the first information is used to request service transmission through multiple access networks.
  • the first information includes information of a second terminal device associated with the first terminal device.
  • the second message is a registration request message.
  • the core network device 800 also includes a second receiving unit, which can be used to receive a third message sent by the second terminal device before sending the first message to the first terminal device, where the third message contains first information, and the first information is used to request service transmission through multiple access networks.
  • a second receiving unit which can be used to receive a third message sent by the second terminal device before sending the first message to the first terminal device, where the third message contains first information, and the first information is used to request service transmission through multiple access networks.
  • the third message is a registration request message.
  • the third network element is AMF or MME.
  • the core network device 800 further includes a second sending unit, which can be used to send a fourth message to the second network element of the core network before sending the first message to the first terminal device, where the fourth message is used to request the first policy information.
  • a second sending unit which can be used to send a fourth message to the second network element of the core network before sending the first message to the first terminal device, where the fourth message is used to request the first policy information.
  • the fourth message includes one or more of the following information: access network information of the first terminal device; information of the second terminal device associated with the first terminal device.
  • the core network device 800 further includes a third sending unit, which can be used to send a sixth message to the second network element of the core network in response to the third message, where the sixth message is used to request policy information of the second terminal device.
  • a third sending unit which can be used to send a sixth message to the second network element of the core network in response to the third message, where the sixth message is used to request policy information of the second terminal device.
  • the sixth message includes one or more of the following information: access network information of the second terminal device; information of the first terminal device associated with the second terminal device.
  • the second network element is a PCF.
  • the first network element is AMF or MME.
  • FIG 9 is a schematic diagram of a core network device according to an embodiment of the present application.
  • the core network device 900 shown in Figure 9 is a second network element of the core network.
  • the core network device 900 includes a first receiving unit 910 .
  • the first receiving unit 910 can be used to receive a fourth message sent by a first network element of the core network, where the fourth message is used to request first policy information of a first terminal device, and the first policy information is used to indicate access network information corresponding to one or more services.
  • the fourth message includes one or more of the following information: access network information of the first terminal device; information of the second terminal device associated with the first terminal device.
  • the first policy information is further used to indicate priority information and/or area information corresponding to each of the one or more services.
  • the access network information includes one or more of the following: access network type, type of wireless access technology, and PLMN information.
  • the one or more services include a first service
  • the first policy information indicates the first service based on one or more of the following: application identification of the first service; address information of the data packet in the first service; port information of the data packet in the first service.
  • the core network device 900 further includes a second receiving unit, which can be used to receive a sixth message sent by the first network element or the third network element, where the sixth message is used to request policy information of the second terminal device.
  • a second receiving unit which can be used to receive a sixth message sent by the first network element or the third network element, where the sixth message is used to request policy information of the second terminal device.
  • the sixth message includes one or more of the following information: access network information of the second terminal device; information of the first terminal device associated with the second terminal device.
  • the third network element is AMF or MME.
  • the second network element is a PCF.
  • the first network element is AMF or MME.
  • Figure 10 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • the dashed lines in Figure 10 indicate that the unit or module is optional.
  • the device 1000 may be used to implement the method described in the above method embodiment.
  • the device 1000 may be a chip, a terminal device, or a network device.
  • the device 1000 may include one or more processors 1010.
  • the processor 1010 may support the device 1000 to implement the method described in the above method embodiment.
  • the processor 1010 may be a general-purpose processor or a special-purpose processor.
  • the processor may be a central processing unit (CPU).
  • 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.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field programmable gate array
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • the apparatus 1000 may further include one or more memories 1020.
  • the memories 1020 store programs that can be executed by the processor 1010, causing the processor 1010 to perform the methods described in the above method embodiments.
  • the memories 1020 may be independent of the processor 1010 or integrated into the processor 1010.
  • the apparatus 1000 may further include a transceiver 1030.
  • the processor 1010 may communicate with other devices or chips via the transceiver 1030.
  • the processor 1010 can transmit and receive data with other devices or chips through the transceiver 1030.
  • 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.
  • 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.
  • 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.
  • B corresponding to A means that B is associated with A and B can be determined based on A.
  • 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.
  • 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.
  • 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).
  • a device e.g., a terminal device and a network device.
  • pre-definition may refer to information defined in a protocol.
  • 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.
  • the term "and/or” is simply a description of the association relationship between related objects, indicating that three relationships can exist.
  • a and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone.
  • the character "/" in this document generally indicates that the related objects are in an "or” relationship.
  • 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.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are merely schematic.
  • the division of the units is merely a logical function division.
  • 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.
  • 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.
  • the computer program product includes one or more computer instructions.
  • 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.
  • the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium can be a computer-readable medium that can read Any available medium or a data storage device such as a server or data center that includes one or more available media.
  • the available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disc (DVD)), or a semiconductor medium (e.g., a solid state drive (SSD)).

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de communication sans fil, un dispositif terminal et un dispositif de réseau central. Le procédé comprend les étapes suivantes : un premier dispositif terminal reçoit un premier message envoyé par un premier élément de réseau d'un réseau central, le premier message comprenant des premières informations de stratégie, et les premières informations de stratégie étant utilisées pour indiquer des informations de réseau d'accès correspondant à un ou à plusieurs services. Dans les modes de réalisation de la présente demande, un dispositif terminal peut dériver le service sur la base des premières informations de stratégie, de sorte que la couverture et la continuité de service peuvent être assurées.
PCT/CN2024/077057 2024-02-08 2024-02-08 Procédé de communication sans fil, dispositif terminal et dispositif de réseau central Pending WO2025166782A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105072694A (zh) * 2015-08-18 2015-11-18 大唐移动通信设备有限公司 一种ue上下线调度的方法及装置
CN107277895A (zh) * 2017-06-28 2017-10-20 辽宁工业大学 一种基于博弈论的异构网络下接入网络选择方法及装置
CN111630880A (zh) * 2020-04-24 2020-09-04 北京小米移动软件有限公司 切片业务处理方法、切片业务处理装置及存储介质
WO2021056576A1 (fr) * 2019-09-29 2021-04-01 Oppo广东移动通信有限公司 Procédé et dispositif pour la transmission de service, et dispositif de communication

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105072694A (zh) * 2015-08-18 2015-11-18 大唐移动通信设备有限公司 一种ue上下线调度的方法及装置
CN107277895A (zh) * 2017-06-28 2017-10-20 辽宁工业大学 一种基于博弈论的异构网络下接入网络选择方法及装置
WO2021056576A1 (fr) * 2019-09-29 2021-04-01 Oppo广东移动通信有限公司 Procédé et dispositif pour la transmission de service, et dispositif de communication
CN111630880A (zh) * 2020-04-24 2020-09-04 北京小米移动软件有限公司 切片业务处理方法、切片业务处理装置及存储介质

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