WO2023092610A1 - 无线通信方法、终端设备和接入网设备 - Google Patents

无线通信方法、终端设备和接入网设备 Download PDF

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Publication number
WO2023092610A1
WO2023092610A1 PCT/CN2021/134176 CN2021134176W WO2023092610A1 WO 2023092610 A1 WO2023092610 A1 WO 2023092610A1 CN 2021134176 W CN2021134176 W CN 2021134176W WO 2023092610 A1 WO2023092610 A1 WO 2023092610A1
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Prior art keywords
plmn
network
terminal device
list
indication information
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PCT/CN2021/134176
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English (en)
French (fr)
Inventor
杨皓睿
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Oppo广东移动通信有限公司
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Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2021/134176 priority Critical patent/WO2023092610A1/zh
Priority to CN202180102581.8A priority patent/CN118020348A/zh
Publication of WO2023092610A1 publication Critical patent/WO2023092610A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point

Definitions

  • the embodiments of the present application relate to the communication field, and more specifically, to a wireless communication method, a terminal device, and an access network device.
  • network slicing (slicing) technology only involves core network nodes.
  • the terminal device reports the required network slice, and the network side selects an appropriate access management function (Access Management Function, AMF) according to the network slice reported by the terminal device to establish a business session between the terminal device and the network side .
  • AMF Access Management Function
  • the non-access stratum (Non-Access Stratum, NAS) of the terminal device will trigger the access stratum (Access Stratum, AS) to read the system information of the surrounding cells of the terminal device, and obtain the system information of the surrounding cells from the system information.
  • Public Land Mobile Network (PLMN) identification identification, ID
  • the access layer of the terminal device reports the obtained PLMN ID to the NAS layer of the terminal device, so that the NAS layer can select the final PLMN.
  • PLMN Public Land Mobile Network
  • the embodiments of the present application provide a wireless communication method, a terminal device, and an access network device, which can select a PLMN more suitable for the terminal device and improve communication quality.
  • the present application provides a wireless communication method, including:
  • the PLMN list is at least one of the following: information stored in the global subscriber identity card USIM, information obtained through non-access stratum NAS signaling, and unified data management UDM information;
  • the present application provides a wireless communication method, including:
  • the system message includes the public land mobile network (PLMN) where the surrounding cells are located, and the PLMN where the surrounding cells are located is used for the terminal equipment to select a PLMN.
  • PLMN public land mobile network
  • the present application provides a wireless communication method, including:
  • the registration request includes third indication information, and the third indication information is used to indicate whether the terminal device has the capability of network selection based on network slicing;
  • the present application provides a wireless communication method, including:
  • the present application provides a terminal device configured to execute the method in the above first aspect or its various implementation manners.
  • the terminal device includes a functional module configured to execute the method in the foregoing first aspect or its various implementation manners.
  • the terminal device may include a processing unit configured to perform functions related to information processing.
  • the processing unit may be a processor.
  • the terminal device may include a sending unit and/or a receiving unit.
  • the sending unit is used to perform functions related to sending, and the receiving unit is used to perform functions related to receiving.
  • the sending unit may be a transmitter or transmitter, and the receiving unit may be a receiver or receiver.
  • the terminal device is a communication chip, the sending unit may be an input circuit or interface of the communication chip, and the sending unit may be an output circuit or interface of the communication chip.
  • the present application provides an access network device, configured to execute the method in the above second aspect or various implementations thereof.
  • the access network device includes a functional module configured to execute the method in the above second aspect or each implementation manner thereof.
  • the access network device may include a processing unit, where the processing unit is configured to perform functions related to information processing.
  • the processing unit may be a processor.
  • the access network device may include a sending unit and/or a receiving unit.
  • the sending unit is used to perform functions related to sending, and the receiving unit is used to perform functions related to receiving.
  • the sending unit may be a transmitter or transmitter, and the receiving unit may be a receiver or receiver.
  • the access network device is a communication chip, the receiving unit may be an input circuit or interface of the communication chip, and the sending unit may be an output circuit or interface of the communication chip.
  • the present application provides a core network device, configured to execute the methods in the third aspect or the fourth aspect or implementations thereof.
  • the core network device includes a functional module configured to execute the methods in the third aspect or the fourth aspect or implementations thereof.
  • the core network device may include a processing unit, where the processing unit is configured to perform functions related to information processing.
  • the processing unit may be a processor.
  • the core network device may include a sending unit and/or a receiving unit.
  • the sending unit is used to perform functions related to sending, and the receiving unit is used to perform functions related to receiving.
  • the sending unit may be a transmitter or transmitter, and the receiving unit may be a receiver or receiver.
  • the core network device is a communication chip, the receiving unit may be an input circuit or interface of the communication chip, and the sending unit may be an output circuit or interface of the communication chip.
  • the present application provides a terminal device, including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory, so as to execute the method in the above first aspect or each implementation manner thereof.
  • processors there are one or more processors, and one or more memories.
  • the memory may be integrated with the processor, or the memory may be separated from the processor.
  • the terminal device further includes a transmitter (transmitter) and a receiver (receiver).
  • the present application provides a terminal device, including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory, so as to execute the method in the above first aspect or each implementation manner thereof.
  • processors there are one or more processors, and one or more memories.
  • the memory may be integrated with the processor, or the memory may be separated from the processor.
  • the terminal device further includes a transmitter (transmitter) and a receiver (receiver).
  • the present application provides an access network device, including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory, so as to execute the method in the above second aspect or each implementation manner thereof.
  • processors there are one or more processors, and one or more memories.
  • the memory may be integrated with the processor, or the memory may be separated from the processor.
  • the access network device further includes a transmitter (transmitter) and a receiver (receiver).
  • the present application provides a core network device, including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory, so as to execute the method in the third aspect or the fourth aspect or each implementation thereof.
  • processors there are one or more processors, and one or more memories.
  • the memory may be integrated with the processor, or the memory may be separated from the processor.
  • the core network device further includes a transmitter (transmitter) and a receiver (receiver).
  • the present application provides a chip configured to implement any one of the foregoing first to fourth aspects or methods in each implementation manner thereof.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes any one of the above first to fourth aspects or various implementations thereof method in .
  • the present application provides a computer-readable storage medium for storing a computer program, and the computer program enables the computer to execute any one of the above-mentioned first to fourth aspects or the implementations thereof method.
  • the present application provides a computer program product, including computer program instructions, the computer program instructions cause a computer to execute any one of the above-mentioned first to fourth aspects or the method in each implementation manner.
  • the present application provides a computer program, which, when run on a computer, causes the computer to execute any one of the above first to fourth aspects or the method in each implementation manner.
  • this application introduces network slicing of terminal equipment when selecting a PLMN in the PLMN list, and designs the PLMN list as at least one of the following: information stored in the global subscriber identity card USIM, through contactless
  • the information obtained by entering the NAS signaling and the information determined by the unified data management UDM enable the terminal device to select a network based on the network slice of the terminal device, and then select a PLMN that is more suitable for the terminal device, improving the communication quality.
  • Figure 1 and Figure 2 are examples of the system framework provided by the embodiment of the present application.
  • FIG. 3 to FIG. 7 are another schematic flow charts of the wireless communication method provided by the embodiments of the present application.
  • Fig. 8 is another schematic flowchart of the wireless communication method provided by the embodiment of the present application.
  • Fig. 9 is another schematic flowchart of the wireless communication method provided by the embodiment of the present application.
  • FIG. 10 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • Fig. 11 is a schematic block diagram of an access network device provided by an embodiment of the present application.
  • Fig. 12 is a schematic block diagram of an AMF provided by an embodiment of the present application.
  • Fig. 13 is a schematic block diagram of a UDM provided by an embodiment of the present application.
  • Fig. 14 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • Fig. 15 is a schematic block diagram of a chip provided by an embodiment of the present application.
  • Fig. 1 is a schematic block diagram of a wireless communication system architecture 100 provided according to the present application.
  • the system architecture 100 includes a terminal device 110, an access network device 120, a core network device 130, and a data network (data network, DN) 160.
  • the core network device 130 includes a management device 140 and a gateway device 150 .
  • the terminal device 110 may be used to connect to the access network device 120 deployed by the operator through a wireless air interface, and then connect to the data network 160 through the core network device 130 .
  • the terminal device 110 may also be called user equipment (user equipment, UE).
  • the terminal device 110 includes, but is not limited to: a mobile phone, a computer, and may also be a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a smart phone, a wireless local loop (wireless local loop, WLL) ) station, personal digital assistant (personal digital assistant, PDA), computer, laptop computer, handheld communication device, handheld computing device, satellite wireless device, wireless modem card, television set top box (STB), user Customer premise equipment (CPE) and/or other equipment used to communicate over the wireless system.
  • a mobile phone a computer
  • a cordless phone a session initiation protocol (session initiation protocol, SIP) phone
  • a smart phone a wireless local loop (wireless local loop, WLL) ) station
  • personal digital assistant personal digital assistant, PDA
  • computer laptop computer
  • handheld communication device handheld computing device
  • handheld computing device satellite wireless device
  • wireless modem card wireless modem card
  • STB television set top box
  • CPE user Customer premise equipment
  • the access network device 120 may also be called an access network (access network, AN)/radio access network (radio access network, RAN) device.
  • the access network device 120 is mainly used to implement wireless physical layer functions, resource scheduling and wireless resource management, wireless access control, mobility management and other functions.
  • the access network device 120 may also be called a 5G-AN/5G-RAN node.
  • the access network device 120 includes but is not limited to: an access node (access point, AP), a next generation base station (NR NodeB, gNB), a central unit (central unit, CU) and Distributed unit (distributed unit, DU) separated form of gNB, transmission receive point (transmission receive point, TRP), transmission point (transmission point, TP) or some other access node.
  • an access node access point, AP
  • NR NodeB, gNB next generation base station
  • gNB central unit
  • Distributed unit distributed unit, DU
  • TRP transmission receive point
  • TP transmission point
  • the core network device 130 is mainly used to implement functions such as call connection, charging, mobility management, and implementation of supplementary services.
  • the core network device 130 may include a management device 140 and a gateway device 150 .
  • the access network device 120 may communicate with the management device 140 and the gateway device 150 respectively, and the gateway device 150 may communicate with the data network 160 .
  • the management device 140 is mainly used for device registration, security authentication, mobility management, and location management of the terminal device, and the gateway device 150 is mainly used for establishing a channel with the terminal device, and forwarding the communication between the terminal device and the external data network on the channel. data pack.
  • the data network 160 may correspond to a variety of different service domains, such as IP multimedia subsystem (IP multimedia subsystem, IMS), Internet Internet, Internet protocol television (internet protocol television, IPTV), and other operator business domains, etc., are mainly used to provide a variety of data business services for terminal equipment.
  • IP multimedia subsystem IP multimedia subsystem, IMS
  • IMS IP multimedia subsystem
  • IMS Internet protocol television
  • IPTV Internet protocol television
  • other operator business domains etc.
  • the data network 160 may include network devices such as servers (including servers providing multicast services), routers, and gateways.
  • servers including servers providing multicast services
  • routers including servers providing multicast services
  • gateways such as gateways.
  • FIG. 1 is only an exemplary architecture diagram, and should not be construed as a limitation on itself.
  • the network architecture 100 may also include other functional units or functional entities.
  • FIG. 2 is an example of the system architecture shown in FIG. 1 .
  • the management device 140 may include a management device access and mobility management function (access & mobility function, AMF), a session management function (session management function, SMF), and a policy control function (policy control function , PCF) and other functional units.
  • the gateway device 150 may include functional units such as a user plane function (UPF), these functional units may work independently, or may be combined to implement certain control functions.
  • AMF access & mobility function
  • SMF session management function
  • PCF policy control function
  • PCF policy control function
  • the gateway device 150 may include functional units such as a user plane function (UPF), these functional units may work independently, or may be combined to implement certain control functions.
  • UPF user plane function
  • AMF, SMF, and PCF can be combined together as a management device to complete access control and mobility management functions such as terminal device access authentication, security encryption, and location registration, as well as the establishment and release of user plane transmission paths. Session management functions such as and change, as well as the function of analyzing some slice-related data (such as congestion) and terminal device-related data.
  • UPF mainly completes functions such as routing and forwarding of user plane data, for example, it is responsible for filtering data packets of terminal devices, data transmission/forwarding, rate control, and generating billing information.
  • terminal device 110 can establish a control plane signaling connection with AMF through NG interface 1 (NG1, N1); access network device 120 can establish a control plane signaling connection with AMF through NG interface 2 (NG2, N2) Connection; the access network device 120 can establish a user plane data connection with UPF through NG interface 3 (NG3, N3); UPF can establish a control plane signaling connection with SMF through NG interface 4 (NG4, N4); UPF can establish a control plane signaling connection through NG interface 6 (NG6, N6) exchanges user plane data with the data network.
  • NG1, N1 control plane signaling connection with AMF through NG interface 1
  • access network device 120 can establish a control plane signaling connection with AMF through NG interface 2 (NG2, N2) Connection
  • the access network device 120 can establish a user plane data connection with UPF through NG interface 3 (NG3, N3)
  • UPF can establish a control plane signaling connection with SMF through NG interface 4 (NG4, N4)
  • UPF can establish a control plane signaling connection through
  • FIG. 2 is only an example of the present application, and should not be construed as a limitation to the present application.
  • the terminal device 110 can establish an air interface connection with the access network device 120 through the NR interface for transmitting user plane data and control plane signaling; the AMF can establish a control plane signal with the SMF through the NG interface 11 (NG11, N11). signaling connection; the SMF can establish a control plane signaling connection with the PCF through the NG interface 7 (NG7, N7).
  • the AMF can establish a control plane signal with the SMF through the NG interface 11 (NG11, N11). signaling connection;
  • the SMF can establish a control plane signaling connection with the PCF through the NG interface 7 (NG7, N7).
  • the network architecture 100 in the embodiment of the present application can support a PDU connection service
  • the PDU connection service refers to a service of exchanging PDU data packets between a UE and a DN.
  • the service of exchanging PDU data packets between the terminal device 110 and the data network 160 For example, the service of exchanging PDU data packets between the terminal device 110 and the data network 160 .
  • the terminal device implements the PDU session connection by initiating the establishment of the PDU session. After a single PDU session is established, that is, a data transmission channel between the terminal device 110 and the data network 160 is established.
  • a PDU session refers to a communication process between the terminal device 110 and the data network 160 .
  • the terminal device 110 may establish multiple PDU session connections, and the SMF corresponding to each PDU session may be different or the same.
  • terminal device 110 may be connected to the same data network through different UPFs.
  • a PDU session can have multiple N6 interfaces at the same time.
  • the UPF connecting each N6 interface is called a PDU session anchor, and each PDU session anchor provides a different path to the same data network.
  • the terminal device 110 may establish multiple PDU sessions, and each of the multiple PDU sessions may include multiple data radio bearers (DRBs) on the RAN side.
  • DRBs data radio bearers
  • the PDU data packet may include at least one of the following information: number, International Mobile Subscriber Identity (IMSI), International Mobile Equipment Identity (International Mobile Equipment) Identity, MEI), PDU session identifier (ID), session type (IPv4, IPv6, IPv4v6 and Ethernet frame), uplink and downlink rate, billing ID, roaming status information, IP information of terminal equipment, policy control function equipment (Policy Control function, PCF) information, quality of service (Quality of service, QoS) information, tunnel information, destination address, session management function (Session Management Function, SMF) identifier, slice information (if supported), default data radio bearer (Data Radio Bearer, DRB) information, data network name, Access Management Function (AMF) information, user location information, session management information, UPF ID, online charging ID, offline charging ID and other related information.
  • IMSI International Mobile Subscriber Identity
  • MEI International Mobile Equipment Identity
  • IPv4, IPv6, IPv4v6 and Ethernet frame IPv4, IPv6, IPv4v6
  • the terminal device 110 needs to access the network slice before transmitting data.
  • the user plane connection between the terminal device 110 and the data network 160 can be established through network slicing.
  • the access network device 120 selects an AMF capable of supporting the required network slicing
  • one or more PDU sessions connected to the data network 160 may be established through the network slicing.
  • different network slices have different single network slice selection assistance information (Single Network Slice Selection Assistance Information, S-NSSAI).
  • S-NSSAI Single Network Slice Selection Assistance Information
  • S-NSSAI Single Network Slice Selection Assistance Information
  • Each PDU session can have multiple quality of service flows (Quality of Service flow, QoS Flow), thus, can be subordinate to different network slices and different transmission performance requirements (such as reliability, transmission delay, transmission rate, etc. ) data communication is carried by different protocol data unit (Protocol Data Unit, PDU) sessions (session).
  • PDU Protocol Data Unit
  • the network can carry Enhance Mobile Broadband (eMBB) and Ultra-Reliable and Low Latency Communication (URLLC) services on different PDU sessions.
  • eMBB Enhance Mobile Broadband
  • URLLC Ultra-Reliable and Low Latency Communication
  • the Non-Access Stratum (Non-Access Stratum, NAS) service data flow (Service data flow, SDF) template (template) of the core network device 130 classifies and maps different data packets from the application layer to different Different QoS Flows in the PDU session, and send them to the access network device 120 in different PDU sessions.
  • the access network device 120 maps the QoS Flow to different data radio bearers (Data Radio Bearer, DRB) according to the identification (ID) information of the QoS Flow and sends it to the UE through the air interface.
  • DRB data radio bearers
  • ID identification
  • the terminal device will perform public land mobile network (Public Land Mobile Network, PLMN) selection (selection) after it is turned on or enters an idle state.
  • PLMN Public Land Mobile Network
  • the chip of the terminal device will read the PLMN selector and access technology (HPLMN Selector with Access Technology) from the subscriber identity module (SIM) card.
  • PLMN Selector User Controlled PLMN Selector with Access Technology
  • Forbidden PLMN Forbidden PLMNs
  • Equivalent PLMN Equivalent HPLMN
  • Operator controlled PLMN Selector with Access Technology Operator controlled PLMN Selector with Access Technology
  • the non-access stratum (Non-Access Stratum, NAS) of the chip will trigger the access layer to read the system information of the surrounding cells, and obtain the PLMN identification (identification, ID) to which the surrounding cells belong from the system information; the access layer obtains the PLMN ID After that, it is reported to the NAS layer, and the NAS layer selects the final PLMN from it.
  • the access layer will also report the signal quality of the PLMN lower than -110dB to the NAS layer, that is, the information reported by the access layer includes the PLMN ID and signal quality.
  • the NAS layer selects the PLMN in the following order:
  • HPLMN if the EHPLMN list does not exist or is empty
  • EHPLMN Equivalent HPLMN
  • the HPLMN ID can be obtained from the International Mobile Subscriber Identification Number (IMSI) of the SIM card.
  • IMSI International Mobile Subscriber Identification Number
  • HPLMN can be Mobile Country Codes (Mobile Country Codes, MCC) and Mobile Network Codes (Mobile Network Codes, MNC) in IMSI.
  • the higher the HPLMN Selector with Access Technology (HPLMN Selector with Access Technology) in the SIM card is ranked, the higher its priority.
  • the higher the priority of the HPLMN Selector with Access Technology (HPLMN Selector with Access Technology) in the SIM card the higher the priority.
  • the terminal device will first select the 4G network and LTE access technology when selecting the PLMN, and the terminal device will only select the 4G network when there is no 4G coverage around. 2G network and LTE access technology.
  • the EHPLMN and the HPLMN can be considered to provide the same service for the UE, that is, the EHPLMN and the HPLMN have the same role.
  • the prioritization of access technologies also applies to EHPLMN.
  • Each PLMN/access technology combination (each PLMN/ access technology combination in the "Operator Controlled PLMN Selector with Access Technology" data file in the SIM(in priority order)or stored in the ME(in priority order)).
  • each PLMN is followed by one or more access technologies, and the higher the priority, the higher the priority.
  • Network slicing exists in a fifth-generation mobile communication technology (5-Generation, 5G) network starting from release 15.
  • Each network slice can correspond to the services of one or more terminals.
  • the identification of the network slice can select auxiliary information (Single-Network Slice Selection Assistance Information, S-NSSAI) for a single network slice.
  • S-NSSAI includes two parts, namely slice/service type (Slice/Service type, SST) and slice differentiator (Slice Differentiator, SD).
  • SST can be a standard value such as 1 to 5.
  • SST and SD can also be non-standard values.
  • a combination of one or more S-NSSAIs is an NSSAI.
  • FIG. 3 shows a schematic flowchart of a wireless communication method 210 according to an embodiment of the present application, and the method 210 can be executed by a terminal device.
  • the terminal device shown in FIG. 3 may be the terminal device shown in FIG. 1 .
  • the method 210 includes:
  • PLMN Public Land Mobile Network
  • the PLMN list is at least one of the following: information stored in a global subscriber identity card (Universal Subscriber Identity Module, USIM), through non- The information obtained by the access layer (Non-Access Stratum, NAS) signaling or the information determined by the unified data management (Unified Data Management, UDM);
  • USIM Universal Subscriber Identity Module
  • NAS Non-Access Stratum
  • UDM Unified Data Management
  • the terminal device selects, among the PLMNs, a PLMN that supports network slicing of the terminal device. Specifically, after the non-access stratum of the terminal device obtains the PLMN list, select a PLMN in the PLMN list that supports the network slicing of the terminal device and supports or allows network selection based on network slicing, or, in the A PLMN corresponding to an access technology that supports the network slicing of the terminal device and supports or allows network selection based on network slicing is selected from the PLMN list.
  • one PLMN may correspond to one or more access technologies.
  • the network slice of the terminal device is introduced, and the PLMN list is designed as at least one of the following: information stored in the global subscriber identity card USIM, through the non-access stratum
  • the information obtained by NAS signaling and the information determined by the unified data management UDM enable the terminal device to select a network based on the network slice of the terminal device, and then select a PLMN that is more suitable for the terminal device, improving the communication quality.
  • the PLMN list may be a configuration (Profile) file stored in the USIM.
  • Profile configuration
  • the PLMN list may be information updated through NAS signaling.
  • the PLMN list may be information determined by the UDM and configured to the terminal device through the AMF.
  • the PLMN list includes: a first PLMN and first indication information corresponding to the first PLMN; the first indication information is used to indicate whether the first PLMN supports or allows selection based on network slices. net.
  • indication involved in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • A may be the first indication information, and B may be whether the first PLMN supports or allows network selection based on network slicing.
  • the value of the first indication information is a first value, it indicates that the first PLMN supports or allows network selection based on network slicing; if the value of the first indication information is a second value, Then indicate that the first PLMN does not support or does not allow network selection based on network slicing.
  • the first value is 1 and the second value is 0.
  • the first value is 0 and the second value is 1.
  • whether the first PLMN supports or allows network selection based on network slicing may also be indicated by whether the first indication information exists. For example, if the first indication information exists, it indicates that the first PLMN supports or allows network selection based on network slices; if the first indication information does not exist, it indicates that the first PLMN does not support or allows network selection based on network slices .
  • first indication information corresponding to the first PLMN supporting or allowing network selection based on network slicing is added to the PLMN list. If a terminal device needs to perform network selection based on network slicing, only PLMNs that support or allow network selection based on network slicing are considered.
  • the identifier (ID) of the first PLMN corresponds to the first indication information.
  • the PLMN list includes one first PLMN or multiple first PLMNs.
  • the PLMN list includes a first PLMN and first indication information corresponding to the first PLMN.
  • the PLMN list includes a plurality of first PLMNs and first indication information corresponding to each first PLMN in the plurality of PLMNs.
  • the first PLMN may generally refer to any PLMN that has corresponding first indication information in the PLMN list.
  • the PLMN list may include the information shown in Table 1:
  • each PLMN may correspond to a slice-based PLMN selection support indication (that is, an indication of whether to support or allow network selection based on network slices).
  • the corresponding slice-based PLMN selection support indication can be carried through a newly added byte; for example, the last bit of the newly added 1 byte can be used to carry a slice-based The PLMN selection support indication.
  • the information used to indicate the first PLMN occupies 3 bytes
  • the information used to indicate the access technology corresponding to the first PLMN occupies 3 bytes.
  • the slice-based PLMN selection support indication corresponding to the first PLMN can be carried by an additional 1 byte.
  • the corresponding slice-based PLMN selection support indication may be carried in the reserved bits in the 3 bytes used to indicate the PLMN. Taking the first PLMN in the PLMN list shown in Table 1 as an example, the information used to indicate the first PLMN occupies 3 bytes, and the information used to indicate the access technology corresponding to the first PLMN occupies 3 bytes. 2 bytes. In this case, the slice-based PLMN selection support indication corresponding to the first PLMN may be carried by using the reserved bits in the 3 bytes occupied by the information indicating the first PLMN.
  • Table 1 is only an example of the present application, and should not be construed as a limitation of the present application.
  • the slice-based PLMN selection support indication corresponding to the PLMN may also be carried in reserved bits in the 2 bytes occupied by the information indicating the access technology corresponding to the PLMN.
  • the PLMN list includes: a second PLMN, at least one access technology corresponding to the second PLMN, and at least one second indication information respectively corresponding to the at least one access technology; the at least A piece of second indication information is used to indicate whether the at least one access technology under the second PLMN supports or allows network selection based on network slicing.
  • indication involved in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • A may be the second indication information, and B may be whether the second access technology under the second PLMN supports or allows network selection based on network slicing.
  • the value of the second indication information is the first value, it indicates that the corresponding access technology under the second PLMN supports or allows network selection based on network slicing; if the value of the second indication information is If the value is the second value, it indicates that the corresponding access technology under the second PLMN does not support or does not allow network selection based on network slicing.
  • the first value is 1 and the second value is 0.
  • the first value is 0 and the second value is 1.
  • the second indication information indicates that the corresponding access technology under the second PLMN supports or allows network selection based on network slices; if the second indication information does not exist, it indicates that the access technology under the second PLMN The corresponding access technology does not support or allow network selection based on network slicing.
  • the second indication information corresponding to whether the access technology under the second PLMN supports or allows network selection based on network slicing is added to the PLMN list. If the terminal device needs to perform network selection based on network slicing, it only considers the PLMN corresponding to the access technology that supports or allows network selection based on network slicing.
  • the PLMN list includes one second PLMN or multiple second PLMNs.
  • the PLMN list includes: a second PLMN, at least one access technology corresponding to the one second PLMN, and at least one first access technology respectively corresponding to the at least one access technology under the one second PLMN. 2. Instructions.
  • the PLMN list includes: a plurality of second PLMNs, at least one access technology corresponding to each second PLMN in the plurality of second PLMNs, and at least one access technology corresponding to each PLMN at least one piece of second indication information respectively.
  • the second PLMN may generally refer to any PLMN that has at least one corresponding access technology in the PLMN list and has at least one second indication information respectively corresponding to the corresponding at least one access technology.
  • the PLMN list may include the information shown in Table 2:
  • an access technology under each PLMN may correspond to a slice-based PLMN selection support indication (that is, an indication of whether to support or allow network selection based on network slices).
  • the corresponding slice-based PLMN selection support indication can be carried through a new 1 byte; for example, the last of the new 1 byte can be used 1 bit carries slice-based PLMN selection support indication.
  • the information used to indicate the first PLMN occupies 3 bytes
  • the information used to indicate the access technology corresponding to the first PLMN occupies 3 bytes. 2 bytes
  • an additional 1 byte may be used to carry the slice-based PLMN selection support indication corresponding to the access technology under the first PLMN.
  • the corresponding slice-based The PLMN selection support indication for each access technology under each PLMN, the corresponding slice-based The PLMN selection support indication.
  • the information used to indicate the first PLMN occupies 3 bytes
  • the information used to indicate the access technology corresponding to the first PLMN occupies 3 bytes. 2 bytes
  • the reserved bits in the 2 bytes occupied by the information indicating the access technology corresponding to the first PLMN can carry the corresponding access technology under the first PLMN
  • the slice-based PLMN selection support indication for each access technology under each PLMN.
  • Table 2 is only an example of the present application, and should not be construed as a limitation of the present application.
  • the slice-based PLMN selection support indication may also be carried in the reserved bits in the 2 bytes used to indicate the access technology corresponding to the PLMN.
  • the network slice of the terminal device when the PLMN list is information stored in the USIM or information obtained through the NAS signaling, the network slice of the terminal device includes a network slice corresponding to a default service; in the PLMN When the list is information determined by the UDM, the network slice of the terminal device includes the network slice requested by the terminal device.
  • the network slice requested by the terminal device is determined through network slice selection assistance information (Network Slice Selection Assistance Information, NSSAI) requested by the terminal device.
  • NSSAI Network Slice Selection Assistance Information
  • the PLMN list is information determined by the UDM; the S211 may include:
  • the registration request includes third indication information, and the third indication information is used to indicate whether the terminal device has the ability to select a network based on network slicing;
  • the AMF receives the PLMN list sent by Unified Data Management (UDM).
  • UDM Unified Data Management
  • the terminal device may acquire the PLMN list determined by the UDM through a registration process.
  • the terminal device sends a registration request to the AMF, and after the AMF receives the registration request, the AMF obtains the PLMN list determined by the UDM, and sends the PLMN list to the terminal device.
  • indication involved in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • A may be the third indication information, and B may refer to whether the terminal device has the capability of network selection based on network slicing.
  • the value of the third indication information is the first value, it indicates that the terminal device has the capability of network selection based on network slicing; if the value of the third indication information is the second value, then Indicates that the terminal device does not have the capability of network selection based on network slicing.
  • the first value is 1 and the second value is 0.
  • the first value is 0 and the second value is 1.
  • the third indication information indicates that the terminal device has the ability to select a network based on network slicing; if the third indication information does not exist, it indicates that the terminal device does not have the ability to select a network based on network slicing. .
  • the S211 may include:
  • the terminal device sends a registration request to the AMF, and after receiving the registration request, the AMF sends a request for subscription data (namely a list request) to the UDM, and the UDM receives After receiving the request for subscription data sent by the AMF, send the subscription data to the AMF, the subscription data includes the PLMN list, and after receiving the subscription data, the AMF sends the subscription data to the terminal device
  • the registration response message includes the PLMN list.
  • the S211 may include:
  • the downlink transmission message sent by the AMF is received, and the downlink transmission message includes the PLMN list.
  • the UDM sends updated subscription data to the AMF, the updated subscription data includes the PLMN list, and after receiving the subscription data, the AMF sends a downlink A transmission message, where the downlink transmission message includes the PLMN list.
  • the priority order of the PLMNs in the PLMN list is determined according to the first network slice, and the first network slice includes at least one of the following:
  • the network slice requested by the terminal device and the network slice subscribed to by the terminal device.
  • the network slice requested by the terminal device is determined by the NSSAI requested by the terminal device.
  • each PLMN in the PLMN list supports at least one network slice, and the at least one network slice includes a network slice requested by the terminal device and/or a network slice subscribed by the terminal device.
  • the priority order of the PLMNs in the PLMN list is determined according to the number of the first network slices supported by the PLMNs.
  • the PLMN with the highest priority of the PLMN in the PLMN list supports the largest number of the first network slices.
  • the PLMN with the lowest priority of the PLMNs in the PLMN list supports the smallest number of the first network slices.
  • the priority of the PLMN in the PLMN list is proportional to the quantity of the first network slice supported by the PLMN.
  • the method 210 may also include:
  • the terminal device When the PLMN reselection timer times out or expires, the terminal device is triggered to perform PLMN reselection.
  • a registration response message sent by the AMF is received during the registration process, and the registration response message includes the PLMN list and the configuration information.
  • the downlink transmission message sent by the AMF is received, and the downlink transmission message includes the PLMN list and the configuration information.
  • the configuration information of the PLMN reselection timer may also be configured by other devices except the UDM, which is not specifically limited in this application.
  • a network slice supported by each PLMN in the PLMN list corresponds to a timer
  • the timer corresponding to the third PLMN in the PLMN list is corresponding to the network slice corresponding to the third PLMN
  • the timer with the largest or smallest duration among the timers, the PLMN reselection timer is the timer with the largest or smallest duration among the timers corresponding to the PLMNs in the PLMN list.
  • the duration of the timer corresponding to the third PLMN may also be the maximum or minimum value of the duration of the timer corresponding to the network slice corresponding to the third PLMN; the duration of the PLMN reselection timer It is the maximum value or minimum value among the durations of the timers corresponding to the PLMNs in the PLMN list.
  • the duration of the timer corresponding to the third PLMN may also be the average value or other values of the duration of the timer corresponding to the network slice corresponding to the third PLMN, and the PLMN
  • the duration of the reselection timer is an average value or other values among the durations of the timers corresponding to the PLMNs in the PLMN list, which is not specifically limited in this application.
  • the terminal device may also determine the PLMN reselection timer based on the timer corresponding to each network slice supported by each PLMN in the PLMN list.
  • the UDM may also configure a timer corresponding to each network slice supported by each PLMN in the PLMN list for the terminal device, and correspondingly, the terminal device may set the duration of the timer corresponding to the PLMN in the PLMN list
  • the maximum or minimum value in is determined as the PLMN reselection timer; wherein, the timer corresponding to the third PLMN in the PLMN list is the one with the largest or smallest duration among the timers corresponding to the network slice corresponding to the third PLMN timer.
  • each PLMN in the PLMN list corresponds to a timer
  • the PLMN reselection timer is the timer with the largest duration or the smallest duration among the timers corresponding to the PLMNs in the PLMN list.
  • the duration of the PLMN reselection timer is the maximum or minimum value among the durations of the timers corresponding to the PLMNs in the PLMN list.
  • the duration of the PLMN reselection timer is an average value or other values among the durations of the timers corresponding to the PLMNs in the PLMN list, which is not specifically limited in the present application.
  • the terminal device may also determine the PLMN reselection timer based on each PLMN in the PLMN list corresponding to a timer.
  • the UDM may also configure a timer corresponding to each PLMN in the PLMN list for the terminal device.
  • the terminal device may set the maximum or minimum duration of the timers corresponding to the PLMNs in the PLMN list The value is determined as the PLMN reselection timer.
  • the PLMN reselection timer is a timer corresponding to the PLMN list.
  • the duration of the PLMN reselection timer is the duration of the timer corresponding to the PLMN list.
  • the S212 may include:
  • system message includes the PLMNs where the surrounding cells are located;
  • the corresponding access technology supports or allows network selection based on network slicing and supports network slicing of the terminal device.
  • the access stratum of the terminal device reads the system information of the cell at the current location, and sends it to the non-access stratum, so that the non-access stratum of the terminal device performs PLMN selection. For example, based on the order of priority in the PLMN list from high to low, select the PLMN with the highest priority among the PLMNs where the surrounding cells are located and satisfy the following conditions:
  • the corresponding access technology supports or allows network selection based on network slicing and supports network slicing of the terminal device.
  • the terminal device may select a PLMN that supports or allows network selection based on network slicing and supports the network slicing of the terminal device as a candidate PLMN among the PLMNs where the periodic cell is located, Then select the PLMN with the highest priority among the candidate PLMNs based on the descending order of priority in the PLMN list.
  • the terminal device can select the corresponding access technology in the PLMN where the periodic cell is located or allow network selection based on network slicing and support the network slicing of the terminal device.
  • the PLMN is used as a candidate PLMN, and then the PLMN with the highest priority among the candidate PLMNs is selected based on the order of priorities in the PLMN list from high to low.
  • the PLMN where the surrounding cell is located includes a fourth PLMN, and the fourth PLMN corresponds to at least one second access technology;
  • the system message further includes fourth indication information corresponding to the fourth PLMN or At least one fifth indication information respectively corresponding to the at least one second access technology, the fourth indication information is used to indicate that the fourth PLMN supports or allows network selection based on network slicing, and the at least one fifth indication information are respectively used to indicate that the at least one second access technology supports or allows network selection based on network slicing.
  • the fourth PLMN may be any PLMN or part of PLMNs in the PLMNs where the surrounding cells are located.
  • the PLMN selected by the terminal device may be the first PLMN and the fourth PLMN at the same time.
  • the indication information included in the system message (that is, the fourth indication information) and the indication information included in the PLMN list (that is, the first indication information) correspond to the same PLMN, and at this time, the support or Allowing network selection based on network slicing may mean that the indication information included in the system message (that is, the fourth indication information) and the indication information included in the PLMN list are used to indicate that the same PLMN supports or allows network selection based on network slicing. net.
  • the PLMN selected by the terminal device may be the second PLMN and the fourth PLMN at the same time.
  • the indication information included in the system message (that is, the fifth indication information) and the indication information included in the PLMN list (that is, the second indication information) correspond to the same access technology under the same PLMN
  • the supporting or allowing network selection based on network slicing may refer to the indication information included in the system message (that is, the fifth indication information) and the indication information included in the PLMN list (that is, the second indication information ) are used to indicate that the same access technology under the same PLMN supports or allows network selection based on network slicing.
  • indication involved in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • A may be the fourth indication information, and B may indicate whether the fourth PLMN supports or allows network selection based on network slicing; or, A may be the fifth indication information, and B may be the corresponding The second access technology supports or allows network selection based on network slicing.
  • the value of the fourth indication information is the first value, it indicates that the fourth PLMN supports or allows network selection based on network slicing; if the value of the fourth indication information is the second value, Then indicate that the fourth PLMN does not support or does not allow network selection based on network slicing.
  • the first value is 1 and the second value is 0.
  • the first value is 0 and the second value is 1.
  • whether the fourth PLMN supports or allows network selection based on network slicing may also be indicated by whether the fourth indication information exists. For example, if the fourth indication information exists, it indicates that the fourth PLMN supports or allows network selection based on network slices; if the fourth indication information does not exist, it indicates that the fourth PLMN does not support or allows network selection based on network slices .
  • the value of the fifth indication information is the first value, it indicates that the corresponding second access technology supports or allows network selection based on network slicing; if the value of the fifth indication information is the second value, it indicates that the corresponding second access technology does not support or does not allow network selection based on network slicing.
  • the first value is 1 and the second value is 0.
  • the first value is 0 and the second value is 1.
  • whether the corresponding second access technology supports or allows network selection based on network slicing may also be indicated by whether the fifth indication information exists. For example, if the fifth indication information exists, it indicates that the corresponding second access technology supports or allows network selection based on network slicing; if the fifth indication information does not exist, it indicates that the at least one second access technology does not support or does not Allow network selection based on network slicing.
  • system message further includes slice information of network slices supported by the fourth PLMN;
  • the slice information includes at least one of the following:
  • S-NSSAI Single Network Slice Selection Assistance Information
  • slice group slice group
  • slice and/or service type Slice/Service type, SST.
  • the system message containing the fourth indication information or the fifth indication information may be different from the system message containing the slice information of the network slice supported by the fourth PLMN.
  • the system information block (System Information Block, SIB) where the fourth indication information or the fifth indication information is located may be different from the SIB where the slice information of the network slice supported by the fourth PLMN is located.
  • SIB System Information Block
  • the sequence numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic, and should not be used in this application.
  • the implementation of the examples constitutes no limitation.
  • the terms “downlink” and “uplink” are used to indicate the transmission direction of signals or data, wherein “downlink” is used to indicate that the transmission direction of signals or data is from the station to the user equipment in the cell For the first direction, “uplink” is used to indicate that the signal or data transmission direction is the second direction from the user equipment in the cell to the station, for example, “downlink signal” indicates that the signal transmission direction is the first direction.
  • the term "and/or" is only an association relationship describing associated objects, indicating that there may be three relationships. Specifically, A and/or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.
  • the above describes the wireless communication method according to the embodiment of the present application in detail from the perspective of the terminal device in conjunction with FIG. 3 .
  • the wireless communication method provided in the embodiment of the present application will be described below from the access network device in conjunction with FIG. 4 .
  • FIG. 4 is a schematic flowchart of a wireless communication method 220 provided by an embodiment of the present application.
  • the method 220 can be executed by an access network device.
  • the method 220 may include:
  • the terminal device receives the system message sent by the access network device;
  • the system message includes the public land mobile network (PLMN) where the surrounding cells are located, and the PLMN where the surrounding cells are located is used for the terminal equipment to select a PLMN.
  • PLMN public land mobile network
  • the PLMN where the surrounding cell is located includes a fourth PLMN, and the fourth PLMN corresponds to at least one second access technology;
  • the system message further includes fourth indication information corresponding to the fourth PLMN or At least one fifth indication information respectively corresponding to the at least one second access technology, the fourth indication information is used to indicate that the fourth PLMN supports or allows network selection based on network slicing, and the at least one fifth indication information are respectively used to indicate that the at least one second access technology supports or allows network selection based on network slicing.
  • the fourth PLMN may be any PLMN or part of PLMNs in the PLMNs where the surrounding cells are located.
  • system message further includes slice information of network slices supported by the fourth PLMN;
  • the slice information includes at least one of the following:
  • the system message containing the fourth indication information or the fifth indication information may be different from the system message containing the slice information of the network slice supported by the fourth PLMN.
  • the SIB where the fourth indication information or the fifth indication information is located may be different from the SIB where the slice information of the network slice supported by the fourth PLMN is located.
  • the wireless communication method provided by the embodiment of the present application will be described below from the perspective of the AMF with reference to FIG. 5 .
  • FIG. 5 is a schematic flowchart of a wireless communication method 230 provided by an embodiment of the present application.
  • the method 230 may be performed by an AMF.
  • the method 230 may include:
  • S231. Receive a registration request sent by a terminal device; the registration request includes third indication information, where the third indication information is used to indicate whether the terminal device has the capability of network selection based on network slicing;
  • the S234 may include:
  • the registration response message including the PLMN list
  • a downlink transmission message is sent to the terminal device, where the downlink transmission message includes the PLMN list.
  • the priority order of the PLMNs in the PLMN list is determined according to the first network slice, and the first network slice includes at least one of the following:
  • the network slice requested by the terminal device and the network slice subscribed to by the terminal device.
  • the priority order of the PLMNs in the PLMN list is determined according to the number of the first network slices supported by the PLMNs.
  • the network slice requested by the terminal device is determined by the network slice selection assistance information NSSAI requested by the terminal device.
  • the method 230 may also include:
  • a network slice supported by each PLMN in the PLMN list corresponds to a timer
  • the timer corresponding to the third PLMN in the PLMN list is corresponding to the network slice corresponding to the third PLMN
  • the timer with the largest or smallest duration among the timers, the PLMN reselection timer is the timer with the largest or smallest duration among the timers corresponding to the PLMNs in the PLMN list.
  • each PLMN in the PLMN list corresponds to a timer
  • the PLMN reselection timer is the timer with the largest duration or the smallest duration among the timers corresponding to the PLMNs in the PLMN list.
  • the PLMN reselection timer is a timer corresponding to the PLMN list.
  • the PLMN list includes: a first PLMN and first indication information corresponding to the first PLMN; the first indication information is used to indicate whether the first PLMN supports or allows selection based on network slices. net.
  • the PLMN list includes: a second PLMN, at least one access technology corresponding to the second PLMN, and at least one second indication information respectively corresponding to the at least one access technology; the at least A piece of second indication information is used to indicate whether the at least one access technology under the second PLMN supports or allows network selection based on network slicing.
  • FIG. 6 is a schematic flowchart of a wireless communication method 240 provided by an embodiment of the present application.
  • the method 240 may be performed by a UDM.
  • the method 240 may include:
  • the S243 may include:
  • the S242 may include:
  • the priority order of the PLMNs in the PLMN list is determined according to the first network slice, and the first network slice includes at least the following one item:
  • the network slice requested by the terminal device and the network slice subscribed to by the terminal device.
  • the priority order of the PLMNs in the PLMN list is determined according to the number of the first network slices supported by the PLMNs.
  • the network slice requested by the terminal device is determined by the network slice selection assistance information NSSAI requested by the terminal device.
  • the method 240 may also include:
  • the PLMN reselection timer is used to trigger the terminal equipment to perform PLMN reselection.
  • a network slice supported by each PLMN in the PLMN list corresponds to a timer
  • the timer corresponding to the third PLMN in the PLMN list is corresponding to the network slice corresponding to the third PLMN
  • the timer with the largest or smallest duration among the timers, the PLMN reselection timer is the timer with the largest or smallest duration among the timers corresponding to the PLMNs in the PLMN list.
  • each PLMN in the PLMN list corresponds to a timer
  • the PLMN reselection timer is the timer with the largest duration or the smallest duration among the timers corresponding to the PLMNs in the PLMN list.
  • the PLMN reselection timer is a timer corresponding to the PLMN list.
  • the PLMN list includes: a first PLMN and first indication information corresponding to the first PLMN; the first indication information is used to indicate whether the first PLMN supports or allows selection based on network slices. net.
  • the PLMN list includes: a second PLMN, at least one access technology corresponding to the second PLMN, and at least one second indication information respectively corresponding to the at least one access technology; the at least A piece of second indication information is used to indicate whether the at least one access technology under the second PLMN supports or allows network selection based on network slicing.
  • the PLMN list is information determined by the UDM.
  • FIG. 7 is a schematic flowchart of a wireless communication method 300 provided by an embodiment of the present application.
  • the method 300 can be executed interactively by the terminal device, the AMF, and the SDM.
  • the implementation manner for the terminal device to obtain the PLMN list will be described below with reference to FIG. 7 .
  • the method 300 may include:
  • the terminal device sends a registration request to the AMF; the registration request includes third indication information, and the third indication information is used to indicate whether the terminal device has the capability of network selection based on network slicing.
  • the third indication information is used to indicate that the terminal device has the capability of network selection based on network slices, and the registration request further includes the network slice of the terminal device.
  • the network slice of the terminal device includes the network slice requested by the terminal device.
  • the network slice requested by the terminal device is determined by the NSSAI requested by the terminal device.
  • the AMF sends a list request to the UDM, where the list request includes the third indication information.
  • the list request further includes the network slice of the terminal device.
  • the AMF after receiving the registration request, the AMF sends a request for subscription data (namely, a list request) to the UDM.
  • a request for subscription data namely, a list request
  • the UDM determines a PLMN list based on the third indication information.
  • the priority order of the PLMNs in the PLMN list is determined according to the first network slice, and the first network slice includes at least one of the following:
  • the network slice requested by the terminal device and the network slice subscribed to by the terminal device.
  • each PLMN in the PLMN list supports at least one network slice, and the at least one network slice includes a network slice requested by the terminal device and/or a network slice subscribed by the terminal device.
  • the priority order of the PLMNs in the PLMN list is determined according to the number of the first network slices supported by the PLMNs.
  • the PLMN with the highest priority of the PLMN in the PLMN list supports the largest number of the first network slices.
  • the PLMN with the lowest priority of the PLMNs in the PLMN list supports the smallest number of the first network slices.
  • the priority of the PLMN in the PLMN list is proportional to the quantity of the first network slice supported by the PLMN.
  • the UDM sends the PLMN list to the AMF.
  • the AMF sends the PLMN list to the terminal device.
  • the UDM sends the subscription data to the AMF after receiving the request for subscription data (namely list request) sent by the AMF, and the subscription data includes the PLMN list , after receiving the subscription data, the AMF sends the registration response message to the terminal device, where the registration response message includes the PLMN list.
  • the request for subscription data namely list request
  • the AMF sends the registration response message to the terminal device, where the registration response message includes the PLMN list.
  • the UDM sends updated subscription data to the AMF, the updated subscription data includes the PLMN list, and after receiving the subscription data, the AMF sends the Sending a downlink transmission message, where the downlink transmission message includes the PLMN list.
  • the subscription data used to configure or update the PLMN list may also include configuration information of a PLMN reselection timer.
  • the terminal device may be triggered to Perform PLMN reselection based on the PLMN list.
  • a network slice supported by each PLMN in the PLMN list corresponds to a timer
  • the timer corresponding to the third PLMN in the PLMN list is the timer corresponding to the network slice corresponding to the third PLMN
  • the timer with the largest or smallest duration, the PLMN reselection timer is the timer with the largest or smallest duration among the timers corresponding to the PLMNs in the PLMN list.
  • the duration of the timer corresponding to the third PLMN may also be the average value or other values of the duration of the timer corresponding to the network slice corresponding to the third PLMN, and the PLMN
  • the duration of the reselection timer is an average value or other values among the durations of the timers corresponding to the PLMNs in the PLMN list, which is not specifically limited in this application.
  • the terminal device may also determine the PLMN reselection timer based on the timer corresponding to each network slice supported by each PLMN in the PLMN list.
  • the UDM may also configure a timer corresponding to each network slice supported by each PLMN in the PLMN list for the terminal device, and correspondingly, the terminal device may set the duration of the timer corresponding to the PLMN in the PLMN list
  • the maximum or minimum value in is determined as the PLMN reselection timer; wherein, the timer corresponding to the third PLMN in the PLMN list is the one with the largest or smallest duration among the timers corresponding to the network slice corresponding to the third PLMN timer.
  • each PLMN in the PLMN list corresponds to a timer
  • the PLMN reselection timer is the timer with the largest duration or the smallest duration among the timers corresponding to the PLMNs in the PLMN list.
  • the duration of the PLMN reselection timer is an average value or other values among the durations of the timers corresponding to the PLMNs in the PLMN list, which is not specifically limited in the present application.
  • the terminal device may also determine the PLMN reselection timer based on each PLMN in the PLMN list corresponding to a timer.
  • the UDM may also configure a timer corresponding to each PLMN in the PLMN list for the terminal device.
  • the terminal device may set the maximum or minimum duration of the timers corresponding to the PLMNs in the PLMN list The value is determined as the PLMN reselection timer.
  • the PLMN reselection timer is a timer corresponding to the PLMN list.
  • the terminal device selects the PLMN with the highest priority among the PLMNs where the surrounding cells are located and that meets the following conditions:
  • the corresponding access technology supports or allows network selection based on network slicing and supports network slicing of the terminal device.
  • FIG. 8 is a schematic flowchart of a wireless communication method 400 provided by an embodiment of the present application.
  • the method 400 can be executed interactively by the terminal device and the access network device.
  • the method 400 may include:
  • the terminal device receives a system message sent by the access network device, where the system message includes the PLMN where the surrounding cells are located;
  • the terminal device selects the PLMN with the highest priority among the PLMNs where the surrounding cells are located and meeting the following conditions based on the order of priority in the PLMN list from high to low:
  • the corresponding access technology supports or allows network selection based on network slicing and supports network slicing of the terminal device.
  • the PLMN list may be a configuration (Profile) file stored in the USIM.
  • Profile configuration
  • the PLMN list may be information updated through NAS signaling.
  • the PLMN list may be information determined by the UDM and configured to the terminal device through the AMF.
  • the PLMN list includes: a first PLMN and first indication information corresponding to the first PLMN; the first indication information is used to indicate whether the first PLMN supports or allows network selection based on network slicing;
  • the PLMN list includes: the second PLMN, at least one access technology corresponding to the second PLMN, and at least one second indication information respectively corresponding to the at least one access technology; the at least one second indication information The information is used to indicate whether the at least one access technology under the second PLMN supports or allows network selection based on network slicing.
  • the terminal device may determine whether the PLMN where the surrounding cell is located satisfies the following conditions based on the information in the PLMN list:
  • the corresponding access technology supports or allows network selection based on network slicing and supports network slicing of the terminal device.
  • the access stratum of the terminal device reads the system information of the cell at the current location, and sends it to the non-access stratum, so that the non-access stratum of the terminal device performs PLMN selection. For example, based on the order of priority in the PLMN list from high to low, select the PLMN with the highest priority among the PLMNs where the surrounding cells are located and satisfy the following conditions:
  • the corresponding access technology supports or allows network selection based on network slicing and supports network slicing of the terminal device.
  • the terminal device may select a PLMN that supports or allows network selection based on network slicing and supports the network slicing of the terminal device as a candidate PLMN among the PLMNs where the periodic cell is located, Then select the PLMN with the highest priority among the candidate PLMNs based on the descending order of priority in the PLMN list.
  • the terminal device can select the corresponding access technology in the PLMN where the periodic cell is located or allow network selection based on network slicing and support the network slicing of the terminal device.
  • the PLMN is used as a candidate PLMN, and then the PLMN with the highest priority among the candidate PLMNs is selected based on the order of priorities in the PLMN list from high to low.
  • the PLMN where the surrounding cell is located includes a fourth PLMN, and the fourth PLMN corresponds to at least one second access technology;
  • the system message also includes fourth indication information corresponding to the fourth PLMN or the At least one fifth indication information respectively corresponding to at least one second access technology, the fourth indication information is used to indicate that the fourth PLMN supports or allows network selection based on network slicing, and the at least one fifth indication information is respectively used To indicate that the at least one second access technology supports or allows network selection based on network slicing.
  • the fourth PLMN may be any PLMN or part of PLMNs in the PLMNs where the surrounding cells are located.
  • the PLMN selected by the terminal device may be the first PLMN and the fourth PLMN at the same time.
  • the indication information included in the system message (that is, the fourth indication information) and the indication information included in the PLMN list (that is, the first indication information) correspond to the same PLMN, and at this time, the support or Allowing network selection based on network slicing may mean that the indication information included in the system message (that is, the fourth indication information) and the indication information included in the PLMN list are used to indicate that the same PLMN supports or allows network selection based on network slicing. net.
  • the PLMN selected by the terminal device may be the second PLMN and the fourth PLMN at the same time.
  • the indication information included in the system message (that is, the fifth indication information) and the indication information included in the PLMN list (that is, the second indication information) correspond to the same access technology under the same PLMN
  • the supporting or allowing network selection based on network slicing may refer to the indication information included in the system message (that is, the fifth indication information) and the indication information included in the PLMN list (that is, the second indication information ) are used to indicate that the same access technology under the same PLMN supports or allows network selection based on network slicing.
  • system message further includes slice information of network slices supported by the fourth PLMN;
  • the slice information includes at least one of the following: S-NSSAI, slice group, and SST.
  • the system message containing the fourth indication information or the fifth indication information may be different from the system message containing the slice information of the network slice supported by the fourth PLMN.
  • the SIB where the fourth indication information or the fifth indication information is located may be different from the SIB where the slice information of the network slice supported by the fourth PLMN is located.
  • the UE can select a network through the following steps:
  • Step 1 If HPLMN wants to control how the UE selects a network based on network slicing, configure the configuration (profile) file in the USIM card, and add an indication of whether the PLMN ID supports network selection based on network slicing to the configuration file. If the UE needs to perform network selection based on network slicing, it only considers the supported PLMNs. The indication can be 0, not supported; 1, supported.
  • Step 2 The access layer of the UE reads the system information of the cell at the current location, and the system information includes slice information supported by the PLMN. It may also include an indication of supporting network selection based on network slicing. The indication and the slice information supported by the PLMN may belong to different SIBs.
  • the slice information can be represented in the following ways: S-NSSAI, slice group, and standardized SST.
  • the access layer then sends the found PLMN and its slice information to the NAS layer.
  • Step 3 When selecting a PLMN, the NAS layer of the UE judges whether the PLMN supports network selection based on network slicing according to the existing priority order, and if so, judges whether it supports the network slicing desired by the UE according to its slice information.
  • the network slice desired by the UE may be selected based on the default services corresponding to the network slices; the NAS layer selects the highest priority PLMN that can support the desired network slice.
  • Step 4 The HPLMN can update the content in the configuration (profile) file through NAS signaling. It can be configured to UE by using Steering of roaming transparent container (Steering of roaming transparent container) parameter.
  • FIG. 9 is a schematic flowchart of a wireless communication method 430 provided by an embodiment of the present application.
  • the method 430 may include:
  • the UE sends a registration request to the AMF.
  • the UE initiates registration with the AMF, and the registration message carries the requested (requested) NSSAI and the UE's ability to support network selection based on network slicing. instruct.
  • the AMF requests the UDM for the subscription data.
  • the AMF asks the UDM for the subscription data of the UE, and at the same time sends an indication of the UE's ability to support network selection based on network slicing, and may also carry the requested NSSAI.
  • the UDM determines the PLMN sequence based on the UE capability and the slice information.
  • a PLMN reselection timer may be determined.
  • the UDM determines the priority-arranged PLMN list (one or more) according to the UE capability and slice information, and the PLMN that supports more slices has a higher priority.
  • slice information can be:
  • Request NSSAI if received, that is, sort the PLMNs based on the network slices required by the UE;
  • UDM itself saves the network slice subscribed by the UE, that is, sorts the PLMN based on the network slice that the UE can use.
  • the network can determine the timer for the UE to reselect the PLMN based on the network slice information. For example, multiple slices correspond to multiple durations, select the maximum or minimum duration. There may be one timer per PLMN, or there may be only one timer. If there is one timer for each PLMN, the UE can count the time according to the timer with the largest or smallest duration. When the timer expires, the UE performs PLMN reselection.
  • the UDM sends subscription data to the AMF, including the PLMN list.
  • the AMF sends the registration acceptance/rejection to the UE, including the PLMN list.
  • the UDM sends subscription data to the AMF, including the PLMN list.
  • the AMF sends a registration acceptance to the UE, including the PLMN list.
  • the UDM updates the subscription data to the AMF, including the PLMN list.
  • the AMF sends a downlink transmission message to the UE, including the PLMN list.
  • the UDM sends the PLMN list (including the timer) determined in S433 to the UE. It may be sent to the AMF during the registration process, and the AMF sends it to the UE in a registration response message. Or, after the registration is completed, it can be sent to the AMF, and the AMF will send it to the UE in a downlink transmission (DL transport) message; after the UE receives it, it will perform PLMN reselection according to the PLMN list and timer. If there is no timer, the UE can perform PLMN reselection immediately or after entering the idle state.
  • DL transport downlink transmission
  • Fig. 10 is a schematic block diagram of a terminal device 510 according to an embodiment of the present application.
  • the terminal device 510 may include:
  • the obtaining unit 511 is configured to obtain a public land mobile network PLMN list; wherein, the PLMN list is at least one of the following: information stored in the global subscriber identity card USIM, information obtained through non-access stratum NAS signaling, Unified Data Management UDM identified information;
  • the selection unit 512 is configured to select a PLMN from the PLMN list based on the network slice of the terminal device.
  • the PLMN list includes: a first PLMN and first indication information corresponding to the first PLMN; the first indication information is used to indicate whether the first PLMN supports or allows selection based on network slices. net.
  • the PLMN list includes: a second PLMN, at least one access technology corresponding to the second PLMN, and at least one second indication information respectively corresponding to the at least one access technology; the at least A piece of second indication information is used to indicate whether the at least one access technology under the second PLMN supports or allows network selection based on network slicing.
  • the network slice of the terminal device when the PLMN list is information stored in the USIM or information obtained through the NAS signaling, the network slice of the terminal device includes a network slice corresponding to a default service; in the PLMN When the list is information determined by the UDM, the network slice of the terminal device includes the network slice requested by the terminal device.
  • the PLMN list is information determined by the UDM; the obtaining unit 511 is specifically configured to:
  • the registration request includes third indication information, and the third indication information is used to indicate whether the terminal device has the capability of network selection based on network slices;
  • the AMF receives the PLMN list sent by the unified data management UDM.
  • the acquiring unit 511 is specifically configured to:
  • the downlink transmission message sent by the AMF is received, and the downlink transmission message includes the PLMN list.
  • the priority order of the PLMNs in the PLMN list is determined according to the first network slice, and the first network slice includes at least one of the following:
  • the network slice requested by the terminal device and the network slice subscribed to by the terminal device.
  • the priority order of the PLMNs in the PLMN list is determined according to the number of the first network slices supported by the PLMNs.
  • the network slice requested by the terminal device is determined by the network slice selection assistance information NSSAI requested by the terminal device.
  • the acquiring unit 511 can also be used to:
  • the terminal device When the PLMN reselection timer times out or expires, the terminal device is triggered to perform PLMN reselection.
  • a network slice supported by each PLMN in the PLMN list corresponds to a timer
  • the timer corresponding to the third PLMN in the PLMN list is corresponding to the network slice corresponding to the third PLMN
  • the timer with the largest or smallest duration among the timers, the PLMN reselection timer is the timer with the largest or smallest duration among the timers corresponding to the PLMNs in the PLMN list.
  • each PLMN in the PLMN list corresponds to a timer
  • the PLMN reselection timer is the timer with the largest duration or the smallest duration among the timers corresponding to the PLMNs in the PLMN list.
  • the PLMN reselection timer is a timer corresponding to the PLMN list.
  • the selection unit 512 can be used to:
  • system message includes the PLMNs where the surrounding cells are located;
  • the corresponding access technology supports or allows network selection based on network slicing and supports network slicing of the terminal device.
  • the PLMN where the surrounding cell is located includes a fourth PLMN, and the fourth PLMN corresponds to at least one second access technology;
  • the system message further includes fourth indication information corresponding to the fourth PLMN or At least one fifth indication information respectively corresponding to the at least one second access technology, the fourth indication information is used to indicate that the fourth PLMN supports or allows network selection based on network slicing, and the at least one fifth indication information are respectively used to indicate that the at least one second access technology supports or allows network selection based on network slicing.
  • system message further includes slice information of network slices supported by the fourth PLMN;
  • the slice information includes at least one of the following:
  • the device embodiment and the method embodiment may correspond to each other, and similar descriptions may refer to the method embodiment.
  • the terminal device 510 shown in FIG. 10 may correspond to the corresponding subjects performing the methods provided in the embodiments of the present application, and the aforementioned and other operations and/or functions of the various units in the terminal device 510 are for realizing the For the sake of brevity, the corresponding processes in the various methods provided in the embodiments are not repeated here.
  • Fig. 11 is a schematic block diagram of an access network device 520 according to an embodiment of the present application.
  • the access network device 520 may include:
  • a sending unit 521 configured to send a system message
  • the system message includes the public land mobile network (PLMN) where the surrounding cells are located, and the PLMN where the surrounding cells are located is used for the terminal equipment to select a PLMN.
  • PLMN public land mobile network
  • the PLMN where the surrounding cell is located includes a fourth PLMN, and the fourth PLMN corresponds to at least one second access technology;
  • the system message further includes fourth indication information corresponding to the fourth PLMN or At least one fifth indication information respectively corresponding to the at least one second access technology, the fourth indication information is used to indicate that the fourth PLMN supports or allows network selection based on network slicing, and the at least one fifth indication information are respectively used to indicate that the at least one second access technology supports or allows network selection based on network slicing.
  • system message further includes slice information of network slices supported by the fourth PLMN;
  • the slice information includes at least one of the following:
  • the device embodiment and the method embodiment may correspond to each other, and similar descriptions may refer to the method embodiment.
  • the access network device 520 shown in FIG. 11 may correspond to the corresponding subjects performing the various methods provided in the embodiments of the present application, and the foregoing and other operations and/or functions of each unit in the access network device 520 are respectively In order to realize the corresponding processes in the various methods provided in the embodiments of the present application, for the sake of brevity, details are not repeated here.
  • Fig. 12 is a schematic block diagram of the AMF 530 of the embodiment of the present application.
  • described AMF 530 can comprise:
  • the receiving unit 531 is configured to receive a registration request sent by the terminal device; the registration request includes third indication information, and the third indication information is used to indicate whether the terminal device has the capability of network selection based on network slicing;
  • a sending unit 532 configured to send a list request to UDM, where the list request includes the third indication information
  • the receiving unit 531 is also configured to receive the public land mobile network PLMN list sent by the UDM;
  • the sending unit 532 is further configured to send the PLMN list to the terminal device.
  • the sending unit 532 is specifically configured to:
  • the registration response message including the PLMN list
  • a downlink transmission message is sent to the terminal device, where the downlink transmission message includes the PLMN list.
  • the priority order of the PLMNs in the PLMN list is determined according to the first network slice, and the first network slice includes at least one of the following:
  • the network slice requested by the terminal device and the network slice subscribed to by the terminal device.
  • the priority order of the PLMNs in the PLMN list is determined according to the number of the first network slices supported by the PLMNs.
  • the network slice requested by the terminal device is determined by the network slice selection assistance information NSSAI requested by the terminal device.
  • the receiving unit 531 is specifically configured to:
  • a network slice supported by each PLMN in the PLMN list corresponds to a timer
  • the timer corresponding to the third PLMN in the PLMN list is corresponding to the network slice corresponding to the third PLMN
  • the timer with the largest or smallest duration among the timers, the PLMN reselection timer is the timer with the largest or smallest duration among the timers corresponding to the PLMNs in the PLMN list.
  • each PLMN in the PLMN list corresponds to a timer
  • the PLMN reselection timer is the timer with the largest duration or the smallest duration among the timers corresponding to the PLMNs in the PLMN list.
  • the PLMN reselection timer is a timer corresponding to the PLMN list.
  • the PLMN list includes: a first PLMN and first indication information corresponding to the first PLMN; the first indication information is used to indicate whether the first PLMN supports or allows selection based on network slices. net.
  • the PLMN list includes: a second PLMN, at least one access technology corresponding to the second PLMN, and at least one second indication information respectively corresponding to the at least one access technology; the at least A piece of second indication information is used to indicate whether the at least one access technology under the second PLMN supports or allows network selection based on network slicing.
  • the device embodiment and the method embodiment may correspond to each other, and similar descriptions may refer to the method embodiment.
  • the AMF 530 shown in FIG. 12 may correspond to the corresponding subject in each method provided by the embodiment of the present application, and the aforementioned and other operations and/or functions of each unit in the AMF 530 are for realizing the embodiment of the present application For the sake of brevity, the corresponding processes in the provided methods are not repeated here.
  • Fig. 13 is a schematic block diagram of the UDM 540 of the embodiment of the present application.
  • described UDM 540 can comprise:
  • the receiving unit 541 is configured to receive a list request sent by a mobility management function AMF, where the list request includes third indication information, and the third indication information is used to indicate whether the terminal device has the capability of network selection based on network slices;
  • the sending unit 543 is configured to send the PLMN list to the AMF.
  • the sending unit 543 is specifically configured to:
  • the determining unit 542 is specifically configured to:
  • the priority order of the PLMNs in the PLMN list is determined according to the first network slice, and the first network slice includes at least the following one item:
  • the network slice requested by the terminal device and the network slice subscribed to by the terminal device.
  • the priority order of the PLMNs in the PLMN list is determined according to the number of the first network slices supported by the PLMNs.
  • the network slice requested by the terminal device is determined by the network slice selection assistance information NSSAI requested by the terminal device.
  • the sending unit 543 is also configured to:
  • the PLMN reselection timer is used to trigger the terminal equipment to perform PLMN reselection.
  • a network slice supported by each PLMN in the PLMN list corresponds to a timer
  • the timer corresponding to the third PLMN in the PLMN list is corresponding to the network slice corresponding to the third PLMN
  • the timer with the largest or smallest duration among the timers, the PLMN reselection timer is the timer with the largest or smallest duration among the timers corresponding to the PLMNs in the PLMN list.
  • each PLMN in the PLMN list corresponds to a timer
  • the PLMN reselection timer is the timer with the largest duration or the smallest duration among the timers corresponding to the PLMNs in the PLMN list.
  • the PLMN reselection timer is a timer corresponding to the PLMN list.
  • the PLMN list includes: a first PLMN and first indication information corresponding to the first PLMN; the first indication information is used to indicate whether the first PLMN supports or allows selection based on network slices. net.
  • the PLMN list includes: a second PLMN, at least one access technology corresponding to the second PLMN, and at least one second indication information respectively corresponding to the at least one access technology; the at least A piece of second indication information is used to indicate whether the at least one access technology under the second PLMN supports or allows network selection based on network slicing.
  • the device embodiment and the method embodiment may correspond to each other, and similar descriptions may refer to the method embodiment.
  • the UDM 540 shown in FIG. 13 may correspond to the corresponding subject in each method provided by the embodiment of the present application, and the aforementioned and other operations and/or functions of each unit in the UDM 540 are for realizing the embodiment of the present application For the sake of brevity, the corresponding processes in the provided methods are not repeated here.
  • each step of the method embodiment in the embodiment of the present application can be completed by an integrated logic circuit of the hardware in the processor and/or instructions in the form of software, and the steps of the method disclosed in the embodiment of the present application can be directly embodied as hardware
  • the execution of the decoding processor is completed, or the combination of hardware and software modules in the decoding processor is used to complete the execution.
  • the software module may be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, and registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps in the above method embodiments in combination with its hardware.
  • the acquiring unit 511, sending unit 521, receiving unit 531, sending unit 532, receiving unit 541 or sending unit 543 mentioned above may be implemented by a transceiver, and the selecting unit 512 or determining unit 542 mentioned above may be implemented by a processor.
  • FIG. 14 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application.
  • the communication device 600 may include a processor 610 .
  • processor 610 may invoke and run a computer program from the memory, so as to implement the method in the embodiment of the present application.
  • the communication device 600 may further include a memory 620 .
  • the memory 620 may be used to store indication information, and may also be used to store codes, instructions, etc. executed by the processor 610 .
  • the processor 610 can invoke and run a computer program from the memory 620, so as to implement the method in the embodiment of the present application.
  • the memory 620 may be an independent device independent of the processor 610 , or may be integrated in the processor 610 .
  • the communication device 600 may further include a transceiver 630 .
  • the processor 610 can control the transceiver 630 to communicate with other devices, specifically, can send information or data to other devices, or receive information or data sent by other devices.
  • Transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include antennas, and the number of antennas may be one or more.
  • bus system includes not only a data bus, but also a power bus, a control bus, and a status signal bus.
  • the communication device 600 can be the terminal device, access network device, AMF or UDM of the embodiment of the present application, and the communication device 600 can implement the method of the embodiment of the present application by the terminal device, the access network device , AMF or UDM to achieve the corresponding flow, that is to say, the communication device 600 of the embodiment of the present application may correspond to the terminal device 510, the access network device 520, the AMF 530 or the UDM 540 in the embodiment of the present application, and may correspond to For the sake of brevity, the corresponding subject in the wireless communication method provided according to the embodiment of the present application will not be described in detail here.
  • the embodiment of the present application also provides a chip.
  • the chip may be an integrated circuit chip, which has signal processing capabilities, and can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.
  • the chip can also be called system-on-chip, system-on-chip, system-on-chip or system-on-chip, etc.
  • the chip can be applied to various communication devices, so that the communication device installed with the chip can execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.
  • FIG. 15 is a schematic structural diagram of a chip 700 according to an embodiment of the present application.
  • the chip 700 includes a processor 710 .
  • the processor 710 can invoke and run a computer program from the memory, so as to implement the method in the embodiment of the present application.
  • the chip 700 may further include a memory 720 .
  • the processor 710 can invoke and run a computer program from the memory 720, so as to implement the method in the embodiment of the present application.
  • the memory 720 may be used to store indication information, and may also be used to store codes, instructions, etc. executed by the processor 710 .
  • the memory 720 may be an independent device independent of the processor 710 , or may be integrated in the processor 710 .
  • the chip 700 may further include an input interface 730 .
  • the processor 710 may control the input interface 730 to communicate with other devices or chips, specifically, may obtain information or data sent by other devices or chips.
  • the chip 700 may further include an output interface 740 .
  • the processor 710 can control the output interface 740 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.
  • the chip 700 can be applied to the terminal device, access network device, AMF or UDM in the embodiment of the present application, and the chip can implement the terminal device, access network device, For the sake of brevity, the corresponding process implemented by AMF or UDM will not be repeated here.
  • bus system includes not only a data bus, but also a power bus, a control bus, and a status signal bus.
  • Processors mentioned above may include, but are not limited to:
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the processor may be used to implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.
  • the steps of the method disclosed in connection with the embodiments of the present application can be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or erasable programmable memory, register.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the storage mentioned above includes but is not limited to:
  • non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash.
  • the volatile memory can be Random Access Memory (RAM), which acts as external cache memory.
  • RAM Static Random Access Memory
  • SRAM Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • Synchronous Dynamic Random Access Memory Synchronous Dynamic Random Access Memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM, DDR SDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous connection dynamic random access memory
  • Direct Rambus RAM Direct Rambus RAM
  • Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium stores one or more programs, and the one or more programs include instructions.
  • the portable electronic device can perform the wireless communication provided by the application. communication method.
  • the computer-readable storage medium may be applied to the terminal device, access network device, AMF, or UDM in the embodiments of the present application, and the computer program enables the computer to execute each method in the embodiments of the present application by the terminal device, For the sake of brevity, the corresponding processes implemented by the access network device, AMF or UDM are not repeated here.
  • the embodiment of the present application also provides a computer program product, including a computer program.
  • the computer program product can be applied to the terminal device, access network device, AMF or UDM in the embodiments of the present application, and the computer program enables the computer to execute each method in the embodiments of the present application.
  • the corresponding processes realized by network equipment, AMF or UDM are not repeated here for the sake of brevity.
  • the embodiment of the present application also provides a computer program.
  • the computer program When the computer program is executed by the computer, the computer can execute the wireless communication method provided in this application.
  • the computer program can be applied to the terminal device, access network device, AMF or UDM in the embodiments of the present application, and when the computer program is run on the computer, the computer executes the various methods in the embodiments of the present application.
  • the corresponding processes implemented by the terminal device, access network device, AMF or UDM are not repeated here.
  • the embodiment of the present application also provides a communication system.
  • the communication system may include the above-mentioned terminal equipment, access network equipment, AMF or UDM to form the communication system 100 as shown in FIG. 1 or FIG. 2 , for brevity , which will not be repeated here.
  • AMF access network equipment
  • UDM UDM-based communication system
  • the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in the embodiment of the present application.
  • the aforementioned storage medium includes: various media capable of storing program codes such as U disk, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk.
  • the units/modules/components described above as separate/display components may or may not be physically separated, that is, they may be located in one place, or may also be distributed to multiple network units. Part or all of the units/modules/components can be selected according to actual needs to achieve the purpose of the embodiments of the present application.
  • the mutual coupling or direct coupling or communication connection shown or discussed above may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms .

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Abstract

本申请实施例提供了一种无线通信方法、终端设备和接入网设备，所述方法包括：获取PLMN列表；其中，所述PLMN列表为以下中的至少一项：USIM中存储的信息、通过NAS信令获取的信息或UDM确定的信息；基于所述终端设备的网络切片，在所述PLMN列表中选择PLMN。本申请在PLMN列表中选择PLMN时引入了终端设备的网络切片，并将所述PLMN列表设计为以下中的至少一项：USIM中存储的信息、通过NAS信令获取的信息或UDM确定的信息；使得终端设备能够基于端设备的网络切片进行选网，进而，能够选择出更适合终端设备的PLMN，提升了通信质量。

Description

无线通信方法、终端设备和接入网设备 技术领域
本申请实施例涉及通信领域，并且更具体地，涉及无线通信方法、终端设备和接入网设备。
背景技术
截止目前，网络切片(slicing)技术只涉及核心网节点。具体而言，终端设备上报需求的网络切片，网络侧会根据终端设备上报的网络切片，选择合适的接入管理功能(Access Management Function，AMF)，以建立终端设备和网络侧之间的业务会话。具体地，终端设备的非接入层(Non-Access Stratum，NAS)会触发接入层(Access Stratum，AS)读取终端设备的周围小区的系统信息，并从系统信息中获得周围小区所属的公共陆地移动网络(Public Land Mobile Network，PLMN)标识(identification，ID)；接着，终端设备的接入层再把获取到的PLMN ID都上报给终端设备的NAS层，以便NAS层从中选择最终的PLMN。
然而，随着通信标准的发展，如何选择更适合终端设备的PLMN，以提升通信质量仍然是本领域亟需解决的技术问题。
发明内容
本申请实施例提供了一种无线通信方法、终端设备和接入网设备，能够选择出更适合终端设备的PLMN，提升了通信质量。
第一方面，本申请提供了一种无线通信方法，包括：
获取公共陆地移动网络PLMN列表；其中，所述PLMN列表为以下中的至少一项：全球用户识别卡USIM中存储的信息、通过非接入层NAS信令获取的信息、统一数据管理UDM确定的信息；
基于所述终端设备的网络切片，在所述PLMN列表中选择PLMN。
第二方面，本申请提供了一种无线通信方法，包括：
发送系统消息；
其中，所述系统消息包括周围小区所在的公共陆地移动网络PLMN，所述周围小区所在的PLMN用于终端设备选择PLMN。
第三方面，本申请提供了一种无线通信方法，包括：
接收终端设备发送的注册请求；所述注册请求包括第三指示信息，所述第三指示信息用于指示所述终端设备是否具有基于网络切片选网的能力；
向统一数据管理UDM发送列表请求，所述列表请求包括所述第三指示信息；
接收所述UDM发送的公共陆地移动网络PLMN列表；
向所述终端设备发送所述PLMN列表。
第四方面，本申请提供了一种无线通信方法，包括：
接收移动管理功能AMF发送的列表请求，所述列表请求包括第三指示信息，所述第三指示信息用于指示终端设备是否具有基于网络切片选网的能力；
基于所述第三指示信息确定公共陆地移动网络PLMN列表；
向所述AMF发送所述PLMN列表。
第五方面，本申请提供了一种终端设备，用于执行上述第一方面或其各实现方式中的方法。具体地，所述终端设备包括用于执行上述第一方面或其各实现方式中的方法的功能模块。
在一种实现方式中，该终端设备可包括处理单元，该处理单元用于执行与信息处理相关的功能。例如，该处理单元可以为处理器。
在一种实现方式中，该终端设备可包括发送单元和/或接收单元。该发送单元用于执行与发送相关的功能，该接收单元用于执行与接收相关的功能。例如，该发送单元可以为发射机或发射器，该接收单元可以为接收机或接收器。再如，该终端设备为通信芯片，该发送单元可以为该通信芯片的输入电路或者接口，该发送单元可以为该通信芯片的输出电路或者接口。
第六方面，本申请提供了一种接入网设备，用于执行上述第二方面或其各实现方式中的方法。具体地，所述接入网设备包括用于执行上述第二方面或其各实现方式中的方法的功能模块。
在一种实现方式中，该接入网设备可包括处理单元，该处理单元用于执行与信息处理相关的功能。例如，该处理单元可以为处理器。
在一种实现方式中，该接入网设备可包括发送单元和/或接收单元。该发送单元用于执行与发送相关的功能，该接收单元用于执行与接收相关的功能。例如，该发送单元可以为发射机或发射器，该接收 单元可以为接收机或接收器。再如，该接入网设备为通信芯片，该接收单元可以为该通信芯片的输入电路或者接口，该发送单元可以为该通信芯片的输出电路或者接口。
第七方面，本申请提供了一种核心网设备，用于执行上述第三方面或第四方面或其各实现方式中的方法。具体地，所述核心网设备包括用于执行上述第三方面或第四方面或其各实现方式中的方法的功能模块。
在一种实现方式中，该核心网设备可包括处理单元，该处理单元用于执行与信息处理相关的功能。例如，该处理单元可以为处理器。
在一种实现方式中，该核心网设备可包括发送单元和/或接收单元。该发送单元用于执行与发送相关的功能，该接收单元用于执行与接收相关的功能。例如，该发送单元可以为发射机或发射器，该接收单元可以为接收机或接收器。再如，该核心网设备为通信芯片，该接收单元可以为该通信芯片的输入电路或者接口，该发送单元可以为该通信芯片的输出电路或者接口。
第五方面，本申请提供了一种终端设备，包括处理器和存储器。所述存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，以执行上述第一方面或其各实现方式中的方法。
在一种实现方式中，该处理器为一个或多个，该存储器为一个或多个。
在一种实现方式中，该存储器可以与该处理器集成在一起，或者该存储器与处理器分离设置。
在一种实现方式中，该终端设备还包括发射机(发射器)和接收机(接收器)。
第八方面，本申请提供了一种终端设备，包括处理器和存储器。所述存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，以执行上述第一方面或其各实现方式中的方法。
在一种实现方式中，该处理器为一个或多个，该存储器为一个或多个。
在一种实现方式中，该存储器可以与该处理器集成在一起，或者该存储器与处理器分离设置。
在一种实现方式中，该终端设备还包括发射机(发射器)和接收机(接收器)。
第九方面，本申请提供了一种接入网设备，包括处理器和存储器。所述存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，以执行上述第二方面或其各实现方式中的方法。
在一种实现方式中，该处理器为一个或多个，该存储器为一个或多个。
在一种实现方式中，该存储器可以与该处理器集成在一起，或者该存储器与处理器分离设置。
在一种实现方式中，该接入网设备还包括发射机(发射器)和接收机(接收器)。
第十方面，本申请提供了一种核心网设备，包括处理器和存储器。所述存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，以执行上述第三方面或第四方面或其各实现方式中的方法。
在一种实现方式中，该处理器为一个或多个，该存储器为一个或多个。
在一种实现方式中，该存储器可以与该处理器集成在一起，或者该存储器与处理器分离设置。
在一种实现方式中，该核心网设备还包括发射机(发射器)和接收机(接收器)。
第十一方面，本申请提供了一种芯片，用于实现上述第一方面至第四方面中的任一方面或其各实现方式中的方法。具体地，所述芯片包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如上述第一方面至第四方面中的任一方面或其各实现方式中的方法。
第十二方面，本申请提供了一种计算机可读存储介质，用于存储计算机程序，所述计算机程序使得计算机执行上述第一方面至第四方面中的任一方面或其各实现方式中的方法。
第十三方面，本申请提供了一种计算机程序产品，包括计算机程序指令，所述计算机程序指令使得计算机执行上述第一方面至第四方面中的任一方面或其各实现方式中的方法。
第十四方面，本申请提供了一种计算机程序，当其在计算机上运行时，使得计算机执行上述第一方面至第四方面中的任一方面或其各实现方式中的方法。
基于以上技术方案，本申请在PLMN列表中选择PLMN时引入了终端设备的网络切片，并将所述PLMN列表设计为以下中的至少一项：全球用户识别卡USIM中存储的信息、通过非接入层NAS信令获取的信息、统一数据管理UDM确定的信息；使得终端设备能够基于端设备的网络切片进行选网，进而，能够选择出更适合终端设备的PLMN，提升了通信质量。
附图说明
图1和图2是本申请实施例提供的系统框架的示例。
图3至图7是本申请实施例提供的无线通信方法的另一示意性流程图。
图8是本申请实施例提供的无线通信方法的另一示意性流程图。
图9是本申请实施例提供的无线通信方法的另一示意性流程图。
图10是本申请实施例提供的终端设备的示意性框图。
图11是本申请实施例提供的接入网设备的示意性框图。
图12是本申请实施例提供的AMF的示意性框图。
图13是本申请实施例提供的UDM的示意性框图。
图14是本申请实施例提供的通信设备的示意性框图。
图15是本申请实施例提供的芯片的示意性框图。
具体实施方式
下面将结合附图，对本申请实施例中的技术方案进行描述。
图1是根据本申请提供的无线通信系统架构100的示意性框图。
如图1所示，所述系统架构100包括终端设备110，接入网设备120，核心网设备130以及数据网络(data network，DN)160。其中，核心网设备130包括管理设备140和网关设备150。
在本申请的一些实施例中，可选地，终端设备110可以用于通过无线空口连接到运营商部署的接入网设备120，继而通过核心网设备130连接到数据网络160。所述终端设备110也可称为用户设备(user equipment，UE)。
例如，所述终端设备110包括但不限于：手机、电脑，还可以为蜂窝电话、无绳电话、会话发起协议(session initiation protocol，SIP)电话、智能电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、电脑、膝上型计算机、手持式通信设备、手持式计算设备、卫星无线设备、无线调制解调器卡、电视机顶盒(set top box，STB)、用户驻地设备(customer premise equipment，CPE)和/或用于在无线系统上进行通信的其它设备。
在本申请的一些实施例中，可选地，所述接入网设备120也可称为接入网(access network，AN)/无线接入网(radio access network，RAN)设备。所述接入网设备120主要用于实现无线物理层功能、资源调度和无线资源管理、无线接入控制以及移动性管理等功能。所述接入网设备120也可称为5G-AN/5G-RAN节点。
例如，所述接入网设备120所述接入网设备120包括但不限于：接入节点(access point，AP)、下一代基站(NR NodeB，gNB)、中心单元(central unit，CU)和分布式单元(distributed unit,DU)分离形态的gNB、收发点(transmission receive point，TRP)、传输点(transmission point，TP)或某种其它接入节点。
在本申请的一些实施例中，可选地，所述核心网设备130主要用于实现呼叫的接续、计费，移动性管理、以及补充业务的实现等功能。
例如，所述核心网设备130可以包含管理设备140和网关设备150。所述接入网设备120可以分别与所述管理设备140和所述网关设备150进行通信，所述网关设备150可以与所述数据网络160进行通信。管理设备140主要用于终端设备的设备注册、安全认证、移动性管理和位置管理等，网关设备150主要用于与终端设备间建立通道，在该通道上转发终端设备和外部数据网络之间的数据包。
在本申请的一些实施例中，可选地，所述数据网络160可对应于多种不同的业务域，例如IP多媒体子系统(IP multimedia subsystem，IMS)、互联网Internet、互联网协议电视(internet protocol television，IPTV)、其他运营商业务域等，主要用于为终端设备提供多种数据业务服务。
例如，所述数据网络160可以包括服务器(包括提供组播业务的服务器)、路由器、网关等网络设备。
需要说明的是，图1仅为示例性架构图，不应理解为对本身的限制。
例如，除图1中所示功能单元之外，所述网络架构100还可以包括其他功能单元或功能实体。
图2是图1所示的系统架构的示例。
如图2所示，所述管理设备140可以包括管理设备接入和移动性管理功能(access & mobility function，AMF)、会话管理功能(session management function，SMF)、以及策略控制功能(policy control function，PCF)等功能单元。所述网关设备150可以包括用户面功能(user plane function，UPF)等功能单元，这些功能单元可以独立工作，也可以组合在一起实现某些控制功能。
换言之，AMF、SMF和PCF可以组合在一起作为管理设备，用于完成终端设备的接入鉴权、安全加密、位置注册等接入控制和移动性管理功能，以及用户面传输路径的建立、释放和更改等会话管理功能，以及分析一些切片(slice)相关的数据(如拥塞)、终端设备相关的数据的功能。UPF作为网关设备主要完成用户面数据的路由转发等功能，例如，负责对终端设备的数据报文过滤、数据传输/转发、 速率控制、生成计费信息等。
如图2所示，终端设备110可以通过NG接口1(NG1，N1)与AMF建立控制面信令连接；接入网设备120可以通过NG接口2(NG2，N2)与AMF建立控制面信令连接；接入网设备120可以通过NG接口3(NG3，N3)与UPF建立用户面数据连接；UPF可以通过NG接口4(NG4，N4)与SMF建立控制面信令连接；UPF可以通过NG接口6(NG6，N6)与数据网络交互用户面数据。
当然，图2仅为本申请示例，不应理解为对本申请的限制。
例如，所述终端设备110可以通过NR接口与接入网设备120建立空口连接，用于传输用户面数据和控制面信令；AMF可以通过NG接口11(NG11，N11)与SMF建立控制面信令连接；SMF可以通过NG接口7(NG7，N7)与PCF建立控制面信令连接。
需要说明的是，本申请实施例的网络构架100可以支持PDU连接业务，PDU连接业务指UE和DN之间交换PDU数据包的业务。
例如，所述终端设备110和数据网络160之间交换PDU数据包的业务。终端设备通过发起PDU会话的建立来实现PDU会话连接。建立单个PDU会话后，也就是建立了一条所述终端设备110和数据网络160之间的数据传输通道。换言之，PDU会话是指所述终端设备110和数据网络160之间进行通讯的过程。
此外，所述终端设备110可以建立多条PDU会话连接，每条PDU会话对应的SMF可以不同，也可以相同。例如，终端设备110可以通过不同的UPF连接到同一个数据网络上。换言之，PDU会话可同时有多个N6接口。连接每个N6接口的UPF称为PDU会话锚点，每个PDU会话锚点提供了一条到同一个数据网络的不同路径。终端设备110可以建立多个PDU会话，所述多个PDU会话中的每一个PDU会话在RAN侧可以包括多个数据无线承载(DRB)。
在本申请的一些实施例中，可选地，PDU数据包可以包括以下信息中的至少一项号码、国际移动用户识别码(International Mobile Subscriber Identity，IMSI)、国际移动设备识别码(International Mobile Equipment Identity，MEI)、PDU会话标识(ID)、会话类型(IPv4、IPv6、IPv4v6以及以太帧)、上下行速率、计费ID、漫游状态信息、终端设备的IP信息、策略控制功能设备(Policy Control function，PCF)信息、服务质量(Quality of service，QoS)信息、隧道信息、目的地地址、会话管理功能(Session Management Function，SMF)标识、切片信息(若支持)、默认数据无线承载(Data Radio Bearer，DRB)信息、数据网名、接入管理功能(Access Management Function，AMF)信息、用户位置信息、会话管理信息、UPF ID、在线计费标识、离线计费标识等相关信息。
需要说明的是，所述终端设备110在传输数据之前，需要接入到网络切片。换言之，可以通过网络切片建立所述终端设备110和数据网络160的用户面连接。例如，接入网设备120选择出能够支持所要求的网络切片的AMF之后，可以通过网络切片建立一个或多个连接到数据网络160的PDU会话。可选的，不同的网络切片具有不同的单一网络切片选择辅助信息(Single Network Slice Selection Assistance Information，S-NSSAI)。换言之，S-NSSAI可用于标识网络切片。
每一个PDU会话可以具有多个服务质量流(Quality of Service flow，QoS Flow)，由此，可将将隶属于不同网络切片和不同的传输性能要求(如可靠性、传输时延、传输速率等)的数据通信由不同的协议数据单元(Protocol Data Unit，PDU)会话(session)承载。例如，网络可以将增强移动超宽带(Enhance Mobile Broadband，eMBB)和高可靠低时延通信(Ultra-Reliable and Low Latency Communication，URLLC)业务分别在不同的PDU会话上进行承载。
以下行方向为例，核心网设备130的非接入层(Non-Access Stratum，NAS)服务数据流(Service data flow，SDF)模板(template)将来自应用层不同的数据包进行分类映射至不同PDU session里的不同QoS Flow，并且使其在不同的PDU session中发送给接入网设备120。接入网设备120根据QoS Flow的标识(ID)信息将其映射至不同的数据无线承载(Data Radio Bearer，DRB)并通过空口上发送给UE。同理，对于上行数据，也可以采用类似的操作。
为便于理解本申请提供的方案，下面对PLMN选择(即选网)相关方案进行说明。
终端设备在刚开机或进入空闲态后会进行公共陆地移动网络(Public Land Mobile Network，PLMN)选择(selection)。
需要进行PLMN选择时，终端设备的芯片会从用户识别模块(subscriber identity module，SIM)卡内读取归属PLMN选择器与接入技术(HPLMN Selector with Access Technology),用户控制的具有接入技术的PLMN选择器(User Controlled PLMN Selector with Access Technology),禁止PLMN(Forbidden PLMNs),等效归属PLMN(Equivalent HPLMN)，运营商控制的具有接入技术的PLMN选择器(Operator controlled PLMN Selector with Access Technology)等文件。
芯片的非接入层(Non-Access Stratum，NAS)会触发接入层读取周围小区的系统信息，从系统信 息中获得周围小区所属的PLMN标识(identification，ID)；接入层获取PLMN ID后，将其上报给NAS层，NAS层从中选择最终的PLMN。另外，接入层还会将低于-110dB的PLMN的信号质量也报给NAS层，也就是接入层上报的信息包括PLMN ID和信号质量。
NAS层选择PLMN时遵循以下顺序：
1、HPLMN(如果EHPLMN列表不存在或为空)或最高优先级EHPLMN(等效HPLMN)可用(如果EHPLMN列表存在)(either the HPLMN(if the EHPLMN list is not present or is empty)or the highest priority EHPLMN(equivalent HPLMN)that is available(if the EHPLMN list is present))。
可选的，HPLMN ID从SIM卡的国际移动用户识别码(International Mobile Subscriber Identification Number，IMSI)中可以获得。例如，HPLMN可以是IMSI中的移动国家码(Mobile Country Codes，MCC)和移动网络码(Mobile Network Codes，MNC)。
可选的，SIM卡中具有接入技术的HPLMN选择器(HPLMN Selector with Access Technology)排的越靠前，其优先级越高。例如，SIM卡中存在具有接入技术的HPLMN选择器(HPLMN Selector with Access Technology)排的越靠前优先级越高。示例性地，针对4G卡，若接入技术配置为大于或等于2G的LTE，则终端设备在选择PLMN时会优先选择4G网络和LTE接入技术，当周围没有4G覆盖时，终端设备才选择2G网络和LTE接入技术。
可选的，EHPLMN可以认为和HPLMN为UE提供相同的服务，即EHPLMN和HPLMN的作用相同。接入技术的优先级也同样适用于EHPLMN。
2、SIM中“用户控制PLMN选择器的接入技术”数据文件中每个PLMN/接入技术组合(按优先级顺序)(each PLMN/access technology combination in the"User Controlled PLMN Selector with Access Technology"data file in the SIM(in priority order))。
3、SIM中(按优先顺序)或存储在ME中(按优先顺序)的“运营商控制的具有接入技术的PLMN选择器”数据文件中的每个PLMN/接入技术组合(each PLMN/access technology combination in the"Operator Controlled PLMN Selector with Access Technology"data file in the SIM(in priority order)or stored in the ME(in priority order))。
可选的，在“运营商控制的具有接入技术的PLMN选择器”数据文件中，每个PLMN后面会跟随一个或多个接入技术，排的越靠前优先级越高。
4、以随机顺序接收高质量信号的其他PLMN/接入技术组合(other PLMN/access technology combinations with received high quality signal in random order)。
5、按信号质量降序排列的其他PLMN/接入技术组合(other PLMN/access technology combinations in order of decreasing signal quality)。
第五代移动通信技术(5-Generation，5G)网络从版本(release)15开始存在网络切片。每个网络切片可以对应到一个或多个终端的业务。网络切片的标识可以为单一网络切片选择辅助信息(Single-Network Slice Selection Assistance Information，S-NSSAI)。S-NSSAI包括两部分，即切片/服务类型(Slice/Service type，SST)和切片差分器(Slice Differentiator，SD)。SST可以是标准值，例如1至5。SST和SD也可以是非标准值。一个或多个S-NSSAI的组合为NSSAI。
图3示出了根据本申请实施例无线通信方法210的示意性流程图，该方法210可以由终端设备执行。图3中所示的终端设备可以是如图1所示的终端设备。
如图3所示，所述方法210包括：
S211，获取公共陆地移动网络(Public Land Mobile Network，PLMN)列表；其中，所述PLMN列表为以下中的至少一项：全球用户识别卡(Universal Subscriber Identity Module，USIM)中存储的信息、通过非接入层(Non-Access Stratum，NAS)信令获取的信息或统一数据管理统一数据管理(Unified Data Management，UDM)确定的信息；
S212，基于所述终端设备的网络切片，在所述PLMN列表中选择PLMN。
示例性地，所述终端设备在所述PLMN中选择支持所述终端设备的网络切片的PLMN。具体的，终端设备的非接入层获取所述PLMN列表后，在所述PLMN列表中选择支持所述终端设备的网络切片、且支持或允许基于网络切片选网的PLMN，或者，在所述PLMN列表中选择支持所述终端设备的网络切片、且支持或允许基于网络切片选网的接入技术对应的PLMN。可选的，一个PLMN可以对应一个或多个接入技术。
本实施例中，在PLMN列表中选择PLMN时引入了终端设备的网络切片，并将所述PLMN列表设计为以下中的至少一项：全球用户识别卡USIM中存储的信息、通过非接入层NAS信令获取的信息、统一数据管理UDM确定的信息；使得终端设备能够基于端设备的网络切片进行选网，进而，能够选择出更适合终端设备的PLMN，提升了通信质量。
示例性地，所述PLMN列表可以是USIM中存储的配置(Profile)文件。
示例性地，所述PLMN列表可以是通过NAS信令更新的信息。
示例性地，所述PLMN列表可以是UDM确定并通过AMF配置给终端设备的信息。
在一些实施例中，所述PLMN列表包括：第一PLMN以及所述第一PLMN对应的第一指示信息；所述第一指示信息用于指示所述第一PLMN是否支持或允许基于网络切片选网。
需要说明的是，本申请实施例中涉及的术语“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。结合本申请来说，A可以是所述第一指示信息，B可以是所述第一PLMN是否支持或允许基于网络切片选网。
作为一个示例，若所述第一指示信息的取值为第一数值，则指示所述第一PLMN支持或允许基于网络切片选网；若所述第一指示信息的取值为第二数值，则指示所述第一PLMN不支持或不允许基于网络切片选网。可选的，所述第一数值为1且所述第二数值为0。可选的，所述第一数值为0且所述第二数值为1。
作为另一个示例，也可以通过是否存在所述第一指示信息来指示所述第一PLMN是否支持或允许基于网络切片选网。例如，若第一指示信息存在，则指示所述第一PLMN支持或允许基于网络切片选网；若第一指示信息不存在，则指示所述第一PLMN不支持或不允许基于网络切片选网。
示例性地，所述PLMN列表中增加所述第一PLMN对应的是否支持或允许基于网络切片的选网的第一指示信息。终端设备如果需要执行基于网络切片的选网，则只考虑支持或允许基于网络切片的选网的PLMN。
示例性地，所述第一PLMN的标识(ID)与所述第一指示信息对应。
示例性地，所述PLMN列表包括一个第一PLMN或多个第一PLMN。
示例性地，所述PLMN列表包括一个第一PLMN以及所述一个第一PLMN对应的第一指示信息。
示例性地，所述PLMN列表包括多个第一PLMN以及所述多个PLMN中每一个第一PLMN对应的第一指示信息。
示例性地，所述第一PLMN可以泛指所述PLMN列表中存在对应的第一指示信息的任意PLMN。
示例性地，所述PLMN列表可包括表1所示的信息：
表1
Figure PCTCN2021134176-appb-000001
如表1所示，每一个PLMN可以对应一个基于切片的PLMN选择支持指示(即是否支持或允许基于网络切片选网的指示)。
在一些实现方式中，针对每一个PLMN，可以通过新增的1字节携带对应的基于切片的PLMN选择支持指示；例如，可以利用新增的1字节中的最后1个比特位携带基于切片的PLMN选择支持指示。以表1所示的PLMN列表中的第一个PLMN为例，用于指示所述第一个PLMN的信息占用3字节，用于指示所述第一个PLMN对应的接入技术的信息占用的2字节，可以通过额外增加的1字节携带所述第一个PLMN对应的基于切片的PLMN选择支持指示。
在另一些实现方式中，针对每一个PLMN，可以在用于指示PLMN的3字节中的预留比特位中携带对应的基于切片的PLMN选择支持指示。以表1所示的PLMN列表中的第一个PLMN为例，用于指示所述第一个PLMN的信息占用3字节，用于指示所述第一个PLMN对应的接入技术的信息占用2字节，此时，可以通过用于指示所述第一个PLMN的信息所占用的3字节中的预留比特位携带所述第一 个PLMN对应的基于切片的PLMN选择支持指示。
当然，表1仅为本申请的示例，不应理解为对本申请的限制。
例如，在其他可替代实施例中，也可以通过用于指示PLMN对应的接入技术的信息所占用的2字节中的预留比特位携带PLMN对应的基于切片的PLMN选择支持指示。
在一些实施例中，所述PLMN列表包括：第二PLMN、所述第二PLMN对应的至少一个接入技术、以及所述至少一个接入技术分别对应的至少一个第二指示信息；所述至少一个第二指示信息用于指示在所述第二PLMN下的所述至少一个接入技术是否支持或允许基于网络切片选网。
需要说明的是，本申请实施例中涉及的术语“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。结合本申请来说，A可以是所述第二指示信息，B可以是在所述第二PLMN下的第二接入技术是否支持或允许基于网络切片选网。
作为一个示例，若所述第二指示信息的取值为第一数值，则指示所述第二PLMN下对应的接入技术支持或允许基于网络切片选网；若所述第二指示信息的取值为第二数值，则指示所述第二PLMN下对应的接入技术不支持或不允许基于网络切片选网。可选的，所述第一数值为1且所述第二数值为0。可选的，所述第一数值为0且所述第二数值为1。
作为另一个示例，若第二指示信息存在，则指示所述第二PLMN下对应的接入技术支持或允许基于网络切片选网；若第二指示信息不存在，则指示所述第二PLMN下对应的接入技术不支持或不允许基于网络切片选网。
示例性地，所述PLMN列表中增加所述第二PLMN下的接入技术对应的是否支持或允许基于网络切片的选网的第二指示信息。终端设备如果需要执行基于网络切片的选网，则只考虑支持或允许基于网络切片的选网的接入技术对应的PLMN。
示例性地，所述PLMN列表包括一个第二PLMN或多个第二PLMN。
示例性地，所述PLMN列表包括：一个第二PLMN、所述一个第二PLMN对应的至少一个接入技术、以及与所述一个第二PLMN下的至少一个接入技术分别对应的至少一个第二指示信息。
示例性地，所述PLMN列表包括：多个第二PLMN、所述多个第二PLMN中每一个第二PLMN对应的至少一个接入技术、与所述每一个PLMN下的至少一个接入技术分别对应的至少一个第二指示信息。
示例性地，所述第二PLMN可以泛指所述PLMN列表中存在对应的至少一个接入技术、且存在与对应的至少一个接入技术分别对应的至少一个第二指示信息的任意PLMN。
示例性地，所述PLMN列表可包括表2所示的信息：
表2
Figure PCTCN2021134176-appb-000002
如表2所示，每一个PLMN下的一个接入技术可以对应一个基于切片的PLMN选择支持指示(即是否支持或允许基于网络切片选网的指示)。
在一些实现方式中，针对每一个PLMN下的每一个接入技术，可以通过新增的1字节携带对应的基于切片的PLMN选择支持指示；例如，可以利用新增的1字节中的最后1个比特位携带基于切片的PLMN选择支持指示。以表2所示的PLMN列表中的第一个PLMN为例，用于指示所述第一个PLMN的信息占用3字节，用于指示所述第一个PLMN对应的接入技术的信息占用2字节，可以通过额外增加的1字节携带所述第一个PLMN下的接入技术对应的基于切片的PLMN选择支持指示。
在另一些实现方式中，针对每一个PLMN下的每一个接入技术，可以在用于指示PLMN对应的接入技术的信息所占用的2字节中的预留比特位中携带对应的基于切片的PLMN选择支持指示。以表2所示的PLMN列表中的第一个PLMN为例，用于指示所述第一个PLMN的信息占用3字节，用于指示所述第一个PLMN对应的接入技术的信息占用2字节，此时，可以通过用于指示所述第一个PLMN对应的接入技术的信息所占用的2字节中的预留比特位携带所述第一个PLMN下的接入技术对应的基于切片的PLMN选择支持指示。
当然，表2仅为本申请的示例，不应理解为对本申请的限制。
例如，在其他可替代实施例中，也可以在用于指示PLMN对应的接入技术的2字节中的预留比特位中携带基于切片的PLMN选择支持指示。
在一些实施例中，在所述PLMN列表为所述USIM中存储的信息或通过所述NAS信令获取的信息时，所述终端设备的网络切片包括默认业务对应的网络切片；在所述PLMN列表为所述UDM确定的信息时，所述终端设备的网络切片包括所述终端设备请求的网络切片。
示例性地，所述终端设备请求的网络切片通过所述终端设备请求的网络切片选择辅助信息(Network Slice Selection Assistance Information，NSSAI)确定。
在一些实施例中，所述PLMN列表为所述UDM确定的信息；所述S211可包括：
向接入管理功能(Access Management Function，AMF)发送注册请求；所述注册请求包括第三指示信息，所述第三指示信息用于指示所述终端设备是否具有基于网络切片选网的能力；
通过所述AMF接收统一数据管理(Unified Data Management，UDM)发送的所述PLMN列表。
换言之，所述终端设备可通过注册流程获取所述UDM确定的所述PLMN列表。
示例性地，所述终端设备向AMF发送注册请求，所述AMF收到所述注册请求后，所述AMF获取UDM确定的PLMN列表，并向所述终端设备发送所述PLMN列表。
需要说明的是，本申请实施例中涉及的术语“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。结合本申请来说，A可以是所述第三指示信息，B可以指所述终端设备是否具有基于网络切片选网的能力。
作为一个示例，若所述第三指示信息的取值为第一数值，则指示所述终端设备具有基于网络切片选网的能力；若所述第三指示信息的取值为第二数值，则指示所述终端设备不具有基于网络切片选网的能力。可选的，所述第一数值为1且所述第二数值为0。可选的，所述第一数值为0且所述第二数值为1。
作为另一个示例，若第三指示信息存在，则指示所述终端设备具有基于网络切片选网的能力；若第三指示信息不存在，则指示所述终端设备不具有基于网络切片选网的能力。
在一些实施例中，所述S211可包括：
在注册过程中接收所述AMF发送的注册响应消息，所述注册响应消息包括所述PLMN列表。
示例性地，在注册过程中，所述终端设备向AMF发送注册请求，所述AMF收到所述注册请求后，向UDM发送用于索要签约数据的请求(即列表请求)，所述UDM收到所述AMF发送的用于索要签约数据的请求后，向所述AMF发送签约数据，所述签约数据包括所述PLMN列表，所述AMF收到所述签约数据后，向所述终端设备发送所述注册响应消息，所述注册响应消息包括所述PLMN列表。
在一些实施例中，所述S211可包括：
在注册完成后接收所述AMF发送的下行传输消息，所述下行传输消息包括所述PLMN列表。
示例性地，在注册完成后，UDM向所述AMF发送更新的签约数据，所述更新的签约数据包括所述PLMN列表，所述AMF收到所述签约数据后，向所述终端设备发送下行传输消息，所述下行传输消息包括所述PLMN列表。
在一些实施例中，所述PLMN列表中PLMN的优先级顺序根据第一网络切片确定，所述第一网络切片包括以下中的至少一项：
所述终端设备请求的网络切片、所述终端设备签约的网络切片。
示例性地，所述终端设备请求的网络切片通过所述终端设备请求的NSSAI确定。
示例性地，所述PLMN列表中的每一个PLMN支持至少一个网络切片，所述至少一个网络切片包括所述终端设备请求的网络切片和/或所述终端设备签约的网络切片。
在一些实施例中，所述PLMN列表中PLMN的优先级顺序根据PLMN支持的所述第一网络切片的数量确定。
示例性地，所述PLMN列表中PLMN的优先级最高的PLMN支持的所述第一网络切片的数量最大。
示例性地，所述PLMN列表中PLMN的优先级最低的PLMN支持的所述第一网络切片的数量最小。
示例性地，所述PLMN列表中PLMN的优先级与PLMN支持的所述第一网络切片的数量成正比。
在一些实施例中，所述方法210还可包括：
通过所述AMF接收所述UDM发送的PLMN重选计时器的配置信息；
在所述PLMN重选计时器超时或到期的情况下，触发所述终端设备进行PLMN重选。
示例性地，在注册过程中接收所述AMF发送的注册响应消息，所述注册响应消息包括所述PLMN列表和所述配置信息。
示例性地，在注册完成后接收所述AMF发送的下行传输消息，所述下行传输消息包括所述PLMN列表和所述配置信息。
当然，在其他可替代实施例中，所述PLMN重选计时器的配置信息也可以是除UDM之外的其他设备配置的，本申请对此不作具体限定。
在一些实施例中，所述PLMN列表中的每一个PLMN支持的一个网络切片对应一个计时器，所述PLMN列表中的第三PLMN对应的计时器为所述第三PLMN对应的网络切片对应的计时器中时长最大或最小的计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
示例性地，所述第三PLMN对应的计时器的时长也可以为所述第三PLMN对应的网络切片对应的计时器的时长中的最大值或最小值；所述PLMN重选计时器的时长为所述PLMN列表中的PLMN对应的计时器的时长中的最大值或最小值。
当然，在其他可替代实施例中，所述第三PLMN对应的计时器的时长也可以为所述第三PLMN对应的网络切片对应的计时器的时长的平均值或其他取值，所述PLMN重选计时器的时长为所述PLMN列表中的PLMN对应的计时器的时长中的平均值或其他取值，本申请对此不作具体限定。再如，在其他可替代实施例中，也可以由所述终端设备基于所述PLMN列表中的每一个PLMN支持的每一个网络切片对应的计时器确定PLMN重选计时器。例如，UDM也可以为终端设备配置所述PLMN列表中的每一个PLMN支持的每一个网络切片对应的计时器，相应的，所述终端设备可所述PLMN列表中的PLMN对应的计时器的时长中的最大值或最小值确定为PLMN重选计时器；其中，所述PLMN列表中的第三PLMN对应的计时器为所述第三PLMN对应的网络切片对应的计时器中时长最大或最小的计时器。
在一些实施例中，所述PLMN列表中的每一个PLMN对应一个计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
示例性地，所述PLMN重选计时器的时长为所述PLMN列表中的PLMN对应的计时器的时长中的最大值或最小值。
当然，在其他可替代实施例中，所述PLMN重选计时器的时长为所述PLMN列表中的PLMN对应的计时器的时长中的平均值或其他取值，本申请对此不作具体限定。再如，在其他可替代实施例中，也可以由所述终端设备基于所述PLMN列表中的每一个PLMN对应一个计时器确定PLMN重选计时器。例如，UDM也可以为终端设备配置所述PLMN列表中的每一个PLMN对应的计时器，相应的，所述终端设备可所述PLMN列表中的PLMN对应的计时器的时长中的最大值或最小值确定为PLMN重选计时器。
在一些实施例中，所述PLMN重选计时器为所述PLMN列表对应的计时器。
示例性地，所述PLMN重选计时器的时长为所述PLMN列表对应的计时器的时长。
在一些实施例中，所述S212可包括：
接收系统消息，所述系统消息包括周围小区所在的PLMN；
基于所述PLMN列表中优先级从高到低的顺序，选择所述周围小区所在的PLMN中优先级最高的且满足以下条件的PLMN：
支持或允许基于网络切片选网以及支持所述终端设备的网络切片；和/或
对应的接入技术支持或允许基于网络切片选网以及支持所述终端设备的网络切片。
示例性地，所述终端设备的接入层读取当前位置的小区的系统信息后，将其发送给非接入层，以便所述终端设备的非接入层进行PLMN选择。例如，基于所述PLMN列表中优先级从高到低的顺序，选择所述周围小区所在的PLMN中优先级最高的且满足以下条件的PLMN：
支持或允许基于网络切片选网以及支持所述终端设备的网络切片；和/或
对应的接入技术支持或允许基于网络切片选网以及支持所述终端设备的网络切片。
示例性地，终端设备收到所述系统消息后，可在所述周期小区所在的PLMN中选择支持或允许基于网络切片选网的、且支持所述终端设备的网络切片的PLMN作为候选PLMN，然后基于于所述PLMN列表中优先级从高到低的顺序选择所述候选PLMN中优先级最高的PLMN。
示例性地，终端设备收到所述系统消息后，可在所述周期小区所在的PLMN中选择对应的接入技 术支持或允许基于网络切片选网的、且支持所述终端设备的网络切片的PLMN作为候选PLMN，然后基于于所述PLMN列表中优先级从高到低的顺序选择所述候选PLMN中优先级最高的PLMN。
在一些实施例中，所述周围小区所在的PLMN包括第四PLMN，所述第四PLMN对应至少一个第二接入技术；所述系统消息还包括所述第四PLMN对应的第四指示信息或所述至少一个第二接入技术分别对应的至少一个第五指示信息，所述第四指示信息用于指示所述第四PLMN支持或允许基于网络切片选网，所述至少一个第五指示信息分别用于指示所述至少一个第二接入技术支持或允许基于网络切片选网。
示例性地，所述第四PLMN可以是所述周围小区所在的PLMN中的任意一个PLMN或部分PLMN。
作为一个示例，对于终端设备来说，所述终端设备选择的PLMN可以同时为所述第一PLMN和所述第四PLMN。例如，所述系统消息包括的指示信息(即所述第四指示信息)以及所述PLMN列表中包括的指示信息(即所述第一指示信息)对应同一个PLMN，此时，所述支持或允许基于网络切片选网可以指所述系统消息包括的指示信息(即所述第四指示信息)以及所述PLMN列表中包括的指示信息均用于指示所述同一PLMN支持或允许基于网络切片选网。
作为另一个示例，对于终端设备来说，所述终端设备选择的PLMN可以同时为所述第二PLMN和所述第四PLMN。例如，所述系统消息包括的指示信息(即所述第五指示信息)以及所述PLMN列表中包括的指示信息(即所述第二指示信息)对应同一个PLMN下的同一个接入技术，此时，所述支持或允许基于网络切片选网可以指所述系统消息包括的指示信息(即所述第五指示信息)以及所述PLMN列表中包括的指示信息(即所述第二指示信息)均用于指示所述同一PLMN下的同一个接入技术支持或允许基于网络切片选网。
需要说明的是，本申请实施例中涉及的术语“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。结合本申请来说，A可以是所述第四指示信息，B可以是所述第四PLMN是否支持或允许基于网络切片选网；或者，A可以是所述第五指示信息，B可以是对应的所述第二接入技术支持或允许基于网络切片选网。
作为一个示例，若所述第四指示信息的取值为第一数值，则指示所述第四PLMN支持或允许基于网络切片选网；若所述第四指示信息的取值为第二数值，则指示所述第四PLMN不支持或不允许基于网络切片选网。可选的，所述第一数值为1且所述第二数值为0。可选的，所述第一数值为0且所述第二数值为1。
作为另一个示例，也可以通过是否存在所述第四指示信息来指示所述第四PLMN是否支持或允许基于网络切片选网。例如，若第四指示信息存在，则指示所述第四PLMN支持或允许基于网络切片选网；若第四指示信息不存在，则指示所述第四PLMN不支持或不允许基于网络切片选网。
作为一个示例，若所述第五指示信息的取值为第一数值，则指示对应的第二接入技术支持或允许基于网络切片选网；若所述第五指示信息的取值为第二数值，则指示对应的第二接入技术不支持或不允许基于网络切片选网。可选的，所述第一数值为1且所述第二数值为0。可选的，所述第一数值为0且所述第二数值为1。
作为另一个示例，也可以通过是否存在所述第五指示信息来指示对应的第二接入技术是否支持或允许基于网络切片选网。例如，若第五指示信息存在，则指示对应的第二接入技术支持或允许基于网络切片选网；若第五指示信息不存在，则指示所述至少一个第二接入技术不支持或不允许基于网络切片选网。
在一些实施例中，所述系统消息还包括所述第四PLMN支持的网络切片的切片信息；
所述切片信息包括以下中的至少一项：
单一网络切片选择辅助信息(Single Network Slice Selection Assistance Information,S-NSSAI)、切片组、标准化的切片和/或服务类型(Slice/Service type，SST)。
当然，在其他可替代实施例中，所述第四指示信息或所述第五指示信息所在的系统消息，可以不同于所述第四PLMN支持的网络切片的切片信息所在的系统消息，本申请对此不作具体限定。例如，所述第四指示信息或所述第五指示信息所在的系统信息块(System Information Block，SIB)，可以不同于所述第四PLMN支持的网络切片的切片信息所在的SIB。
以上结合附图详细描述了本申请的优选实施方式，但是，本申请并不限于上述实施方式中的具体细节，在本申请的技术构思范围内，可以对本申请的技术方案进行多种简单变型，这些简单变型均属于本申请的保护范围。例如，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合，为了避免不必要的重复，本申请对各种可能的组合方式不再另行说明。又例如，本申请的各种不同的实施方式之间也可以进行任意组合，只要其不违背本申请的思想，其同样 应当视为本申请所公开的内容。
还应理解，在本申请的各种方法实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。此外，在本申请实施例中，术语“下行”和“上行”用于表示信号或数据的传输方向，其中，“下行”用于表示信号或数据的传输方向为从站点发送至小区的用户设备的第一方向，“上行”用于表示信号或数据的传输方向为从小区的用户设备发送至站点的第二方向，例如，“下行信号”表示该信号的传输方向为第一方向。另外，本申请实施例中，术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系。具体地，A和/或B可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
上文中结合图3，从终端设备的角度详细描述了根据本申请实施例的无线通信方法，下面将结合图4从接入网设备描述本申请实施例提供的无线通信方法。
图4是本申请实施例提供的无线通信方法220的示意性流程图。所述方法220可由接入网设备执行。
如图4所示，所述方法220可包括：
S221，终端设备接收接入网设备发送的系统消息；
其中，所述系统消息包括周围小区所在的公共陆地移动网络PLMN，所述周围小区所在的PLMN用于终端设备选择PLMN。
在一些实施例中，所述周围小区所在的PLMN包括第四PLMN，所述第四PLMN对应至少一个第二接入技术；所述系统消息还包括所述第四PLMN对应的第四指示信息或所述至少一个第二接入技术分别对应的至少一个第五指示信息，所述第四指示信息用于指示所述第四PLMN支持或允许基于网络切片选网，所述至少一个第五指示信息分别用于指示所述至少一个第二接入技术支持或允许基于网络切片选网。
示例性地，所述第四PLMN可以是所述周围小区所在的PLMN中的任意一个PLMN或部分PLMN。
在一些实施例中，所述系统消息还包括所述第四PLMN支持的网络切片的切片信息；
所述切片信息包括以下中的至少一项：
单一网络切片选择辅助信息S-NSSAI、切片组、标准化的切片和/或服务类型SST。
当然，在其他可替代实施例中，所述第四指示信息或所述第五指示信息所在的系统消息，可以不同于所述第四PLMN支持的网络切片的切片信息所在的系统消息，本申请对此不作具体限定。例如，所述第四指示信息或所述第五指示信息所在的SIB，可以不同于所述第四PLMN支持的网络切片的切片信息所在的SIB。
应理解，方法220中的接入网设备执行的步骤可以参考方法210中终端设备执行的相应步骤，为了简洁，在此不再赘述。
下面将结合图5从AMF的角度描述本申请实施例提供的无线通信方法。
图5是本申请实施例提供的无线通信方法230的示意性流程图。所述方法230可由AMF执行。
如图5所示，所述方法230可包括：
S231，接收终端设备发送的注册请求；所述注册请求包括第三指示信息，所述第三指示信息用于指示所述终端设备是否具有基于网络切片选网的能力；
S232，向统一数据管理UDM发送列表请求，所述列表请求包括所述第三指示信息；
S233，接收所述UDM发送的公共陆地移动网络PLMN列表；
S234，向所述终端设备发送所述PLMN列表。
在一些实施例中，所述S234可包括：
在注册过程中向所述终端设备发送注册响应消息，所述注册响应消息包括所述PLMN列表；或
在注册完成后向所述终端设备发送下行传输消息，所述下行传输消息包括所述PLMN列表。
在一些实施例中，所述PLMN列表中PLMN的优先级顺序根据第一网络切片确定，所述第一网络切片包括以下中的至少一项：
所述终端设备请求的网络切片、所述终端设备签约的网络切片。
在一些实施例中，所述PLMN列表中PLMN的优先级顺序根据PLMN支持的所述第一网络切片的数量确定。
在一些实施例中，所述终端设备请求的网络切片通过所述终端设备请求的网络切片选择辅助信息NSSAI确定。
在一些实施例中，所述方法230还可包括：
接收所述UDM发送的PLMN重选计时器的配置信息；其中，所述PLMN重选计时器用于触发所述终端设备进行PLMN重选；
向所述终端设备发送所述配置信息。
在一些实施例中，所述PLMN列表中的每一个PLMN支持的一个网络切片对应一个计时器，所述PLMN列表中的第三PLMN对应的计时器为所述第三PLMN对应的网络切片对应的计时器中时长最大或最小的计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
在一些实施例中，所述PLMN列表中的每一个PLMN对应一个计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
在一些实施例中，所述PLMN重选计时器为所述PLMN列表对应的计时器。
在一些实施例中，所述PLMN列表包括：第一PLMN以及所述第一PLMN对应的第一指示信息；所述第一指示信息用于指示所述第一PLMN是否支持或允许基于网络切片选网。
在一些实施例中，所述PLMN列表包括：第二PLMN、所述第二PLMN对应的至少一个接入技术、以及所述至少一个接入技术分别对应的至少一个第二指示信息；所述至少一个第二指示信息用于指示在所述第二PLMN下的所述至少一个接入技术是否支持或允许基于网络切片选网。
应理解，方法230中的AMF执行的步骤可以参考方法210中终端设备执行的相应步骤，为了简洁，在此不再赘述。
下面将结合图6从UDM的角度描述本申请实施例提供的无线通信方法。
图6是本申请实施例提供的无线通信方法240的示意性流程图。所述方法240可由UDM执行。
如图6所示，所述方法240可包括：
S241，接收移动管理功能AMF发送的列表请求，所述列表请求包括第三指示信息，所述第三指示信息用于指示终端设备是否具有基于网络切片选网的能力；
S242，基于所述第三指示信息确定公共陆地移动网络PLMN列表；
S243，向所述AMF发送所述PLMN列表。
在一些实施例中，所述S243可包括：
在注册过程中向所述AMF发送所述PLMN列表；或
在注册完成后向所述AMF发送所述PLMN列表。
在一些实施例中，所述S242可包括：
在所述第三指示信息用于指示终端设备具有基于网络切片选网的能力时，根据第一网络切片确定所述PLMN列表中PLMN的优先级顺序，所述第一网络切片包括以下中的至少一项：
所述终端设备请求的网络切片、所述终端设备签约的网络切片。
在一些实施例中，所述PLMN列表中PLMN的优先级顺序根据PLMN支持的所述第一网络切片的数量确定。
在一些实施例中，所述终端设备请求的网络切片通过所述终端设备请求的网络切片选择辅助信息NSSAI确定。
在一些实施例中，所述方法240还可包括：
向所述AMF发送PLMN重选计时器的配置信息；
其中，所述PLMN重选计时器用于触发终端设备进行PLMN重选。
在一些实施例中，所述PLMN列表中的每一个PLMN支持的一个网络切片对应一个计时器，所述PLMN列表中的第三PLMN对应的计时器为所述第三PLMN对应的网络切片对应的计时器中时长最大或最小的计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
在一些实施例中，所述PLMN列表中的每一个PLMN对应一个计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
在一些实施例中，所述PLMN重选计时器为所述PLMN列表对应的计时器。
在一些实施例中，所述PLMN列表包括：第一PLMN以及所述第一PLMN对应的第一指示信息；所述第一指示信息用于指示所述第一PLMN是否支持或允许基于网络切片选网。
在一些实施例中，所述PLMN列表包括：第二PLMN、所述第二PLMN对应的至少一个接入技术、以及所述至少一个接入技术分别对应的至少一个第二指示信息；所述至少一个第二指示信息用于指示在所述第二PLMN下的所述至少一个接入技术是否支持或允许基于网络切片选网。
应理解，方法240中的UDM执行的步骤可以参考方法230中AMF执行的相应步骤，为了简洁，在此不再赘述。
下面结合具体实施例对本申请提供的方案进行说明。
实施例1：
本实施例中，PLMN列表为UDM确定的信息。
图7是本申请实施例提供的无线通信方法300的示意性流程图。所述方法300可由终端设备、AMF以及SDM交互执行。下面结合图7对所述终端设备获取所述PLMN列表的实现方式进行说明。
如图7所示，所述方法300可包括：
S310，终端设备向AMF发送注册请求；所述注册请求包括第三指示信息，所述第三指示信息用于指示所述终端设备是否具有基于网络切片选网的能力。
示例性地，所述第三指示信息用于指示所述终端设备具有基于网络切片选网的能力，所述注册请求还包括所述终端设备的网切片。所述终端设备的网络切片包括所述终端设备请求的网络切片。所述终端设备请求的网络切片通过所述终端设备请求的NSSAI确定。
S320，所述AMF向UDM发送列表请求，所述列表请求包括所述第三指示信息。
示例性地，所述列表请求还包括所述终端设备的网络切片。
示例性地，所述AMF收到所述注册请求后，向UDM发送用于索要签约数据的请求(即列表请求)。
S330，所述UDM基于所述第三指示信息确定PLMN列表。
示例性地，所述PLMN列表中PLMN的优先级顺序根据第一网络切片确定，所述第一网络切片包括以下中的至少一项：
所述终端设备请求的网络切片、所述终端设备签约的网络切片。
示例性地，所述PLMN列表中的每一个PLMN支持至少一个网络切片，所述至少一个网络切片包括所述终端设备请求的网络切片和/或所述终端设备签约的网络切片。
示例性地，所述PLMN列表中PLMN的优先级顺序根据PLMN支持的所述第一网络切片的数量确定。
示例性地，所述PLMN列表中PLMN的优先级最高的PLMN支持的所述第一网络切片的数量最大。
示例性地，所述PLMN列表中PLMN的优先级最低的PLMN支持的所述第一网络切片的数量最小。
示例性地，所述PLMN列表中PLMN的优先级与PLMN支持的所述第一网络切片的数量成正比。
S340，所述UDM向所述AMF发送所述PLMN列表。
S350，所述AMF向所述终端设备发送所述PLMN列表。
示例性地，在注册过程中，所述UDM收到所述AMF发送的用于索要签约数据的请求(即列表请求)后，向所述AMF发送签约数据，所述签约数据包括所述PLMN列表，所述AMF收到所述签约数据后，向所述终端设备发送所述注册响应消息，所述注册响应消息包括所述PLMN列表。
示例性地，在注册完成后，所述UDM向所述AMF发送更新的签约数据，所述更新的签约数据包括所述PLMN列表，所述AMF收到所述签约数据后，向所述终端设备发送下行传输消息，所述下行传输消息包括所述PLMN列表。
S360，基于所述PLMN列表进行PLMN重选。
示例性地，用于配置或更新所述PLMN列表的签约数据还可包括PLMN重选计时器的配置信息，此时，在所述PLMN重选计时器超时的情况下，可以触发所述终端设备基于所述PLMN列表进行PLMN重选。
示例性地，所述PLMN列表中的每一个PLMN支持的一个网络切片对应一个计时器，所述PLMN列表中的第三PLMN对应的计时器为所述第三PLMN对应的网络切片对应的计时器中时长最大或最小的计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
当然，在其他可替代实施例中，所述第三PLMN对应的计时器的时长也可以为所述第三PLMN对应的网络切片对应的计时器的时长的平均值或其他取值，所述PLMN重选计时器的时长为所述PLMN列表中的PLMN对应的计时器的时长中的平均值或其他取值，本申请对此不作具体限定。再如，在其他可替代实施例中，也可以由所述终端设备基于所述PLMN列表中的每一个PLMN支持的每一个网络切片对应的计时器确定PLMN重选计时器。例如，UDM也可以为终端设备配置所述PLMN列表中的每一个PLMN支持的每一个网络切片对应的计时器，相应的，所述终端设备可所述PLMN列表中的PLMN对应的计时器的时长中的最大值或最小值确定为PLMN重选计时器；其中，所述PLMN列表中的第三PLMN对应的计时器为所述第三PLMN对应的网络切片对应的计时器中时长最大或最小的计时器。
示例性地，所述PLMN列表中的每一个PLMN对应一个计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
当然，在其他可替代实施例中，所述PLMN重选计时器的时长为所述PLMN列表中的PLMN对应的计时器的时长中的平均值或其他取值，本申请对此不作具体限定。再如，在其他可替代实施例中，也 可以由所述终端设备基于所述PLMN列表中的每一个PLMN对应一个计时器确定PLMN重选计时器。例如，UDM也可以为终端设备配置所述PLMN列表中的每一个PLMN对应的计时器，相应的，所述终端设备可所述PLMN列表中的PLMN对应的计时器的时长中的最大值或最小值确定为PLMN重选计时器。
示例性地，所述PLMN重选计时器为所述PLMN列表对应的计时器。
实施例2：
本实施例中，终端设备基于PLMN列表中优先级从高到低的顺序，选择周围小区所在的PLMN中优先级最高的且满足以下条件的PLMN：
支持或允许基于网络切片选网以及支持所述终端设备的网络切片；和/或
对应的接入技术支持或允许基于网络切片选网以及支持所述终端设备的网络切片。
图8是本申请实施例提供的无线通信方法400的示意性流程图。所述方法400可由终端设备和接入网设备交互执行。
如图8所示，所述方法400可包括：
S410，终端设备接收接入网设备发送的系统消息，所述系统消息包括周围小区所在的PLMN；
S420，终端设备基于PLMN列表中优先级从高到低的顺序，选择所述周围小区所在的PLMN中优先级最高的且满足以下条件的PLMN：
支持或允许基于网络切片选网以及支持所述终端设备的网络切片；和/或
对应的接入技术支持或允许基于网络切片选网以及支持所述终端设备的网络切片。
示例性地，所述PLMN列表可以是USIM中存储的配置(Profile)文件。
示例性地，所述PLMN列表可以是通过NAS信令更新的信息。
示例性地，所述PLMN列表可以是UDM确定并通过AMF配置给终端设备的信息。
示例性地，所述PLMN列表包括：第一PLMN以及所述第一PLMN对应的第一指示信息；所述第一指示信息用于指示所述第一PLMN是否支持或允许基于网络切片选网；或者，所述PLMN列表包括：第二PLMN、所述第二PLMN对应的至少一个接入技术、以及所述至少一个接入技术分别对应的至少一个第二指示信息；所述至少一个第二指示信息用于指示在所述第二PLMN下的所述至少一个接入技术是否支持或允许基于网络切片选网。基于此，在S420中，所述终端设备可基于所述PLMN列表中的信息，确定所述周围小区所在的PLMN是否满足以下条件：
支持或允许基于网络切片选网以及支持所述终端设备的网络切片；和/或
对应的接入技术支持或允许基于网络切片选网以及支持所述终端设备的网络切片。
应当理解，针对所述第一PLMN、所述第二PLMN、所述第一指示信息以及所述第二指示信息的描述，可以参考方法210中的相应描述，为避免重复，此处不再赘述。
示例性地，所述终端设备的接入层读取当前位置的小区的系统信息后，将其发送给非接入层，以便所述终端设备的非接入层进行PLMN选择。例如，基于所述PLMN列表中优先级从高到低的顺序，选择所述周围小区所在的PLMN中优先级最高的且满足以下条件的PLMN：
支持或允许基于网络切片选网以及支持所述终端设备的网络切片；和/或
对应的接入技术支持或允许基于网络切片选网以及支持所述终端设备的网络切片。
示例性地，终端设备收到所述系统消息后，可在所述周期小区所在的PLMN中选择支持或允许基于网络切片选网的、且支持所述终端设备的网络切片的PLMN作为候选PLMN，然后基于于所述PLMN列表中优先级从高到低的顺序选择所述候选PLMN中优先级最高的PLMN。
示例性地，终端设备收到所述系统消息后，可在所述周期小区所在的PLMN中选择对应的接入技术支持或允许基于网络切片选网的、且支持所述终端设备的网络切片的PLMN作为候选PLMN，然后基于于所述PLMN列表中优先级从高到低的顺序选择所述候选PLMN中优先级最高的PLMN。
示例性地，所述周围小区所在的PLMN包括第四PLMN，所述第四PLMN对应至少一个第二接入技术；所述系统消息还包括所述第四PLMN对应的第四指示信息或所述至少一个第二接入技术分别对应的至少一个第五指示信息，所述第四指示信息用于指示所述第四PLMN支持或允许基于网络切片选网，所述至少一个第五指示信息分别用于指示所述至少一个第二接入技术支持或允许基于网络切片选网。
示例性地，所述第四PLMN可以是所述周围小区所在的PLMN中的任意一个PLMN或部分PLMN。
作为一个示例，对于终端设备来说，所述终端设备选择的PLMN可以同时为所述第一PLMN和所述第四PLMN。例如，所述系统消息包括的指示信息(即所述第四指示信息)以及所述PLMN列表中包括的指示信息(即所述第一指示信息)对应同一个PLMN，此时，所述支持或允许基于网络切片选网可以指所述系统消息包括的指示信息(即所述第四指示信息)以及所述PLMN列表中包括的指示信息 均用于指示所述同一PLMN支持或允许基于网络切片选网。
作为另一个示例，对于终端设备来说，所述终端设备选择的PLMN可以同时为所述第二PLMN和所述第四PLMN。例如，所述系统消息包括的指示信息(即所述第五指示信息)以及所述PLMN列表中包括的指示信息(即所述第二指示信息)对应同一个PLMN下的同一个接入技术，此时，所述支持或允许基于网络切片选网可以指所述系统消息包括的指示信息(即所述第五指示信息)以及所述PLMN列表中包括的指示信息(即所述第二指示信息)均用于指示所述同一PLMN下的同一个接入技术支持或允许基于网络切片选网。
示例性地，所述系统消息还包括所述第四PLMN支持的网络切片的切片信息；
所述切片信息包括以下中的至少一项：S-NSSAI、切片组、SST。
当然，在其他可替代实施例中，所述第四指示信息或所述第五指示信息所在的系统消息，可以不同于所述第四PLMN支持的网络切片的切片信息所在的系统消息，本申请对此不作具体限定。例如，所述第四指示信息或所述第五指示信息所在的SIB，可以不同于所述第四PLMN支持的网络切片的切片信息所在的SIB。
实施例3：
本实施例中，UE可通过以下步骤进行选网：
步骤1：HPLMN如果想要控制UE如何基于网络切片的选网，配置USIM卡中的配置(profile)文件，在配置文件中增加PLMN ID对应的是否支持基于网络切片的选网的指示。UE如果需要执行基于网络切片的选网，则只考虑支持的PLMN。该指示可以是0，不支持；1，支持。
步骤2：UE的接入层读取当前位置的小区的系统信息，系统信息中包含该PLMN支持的切片信息。还可以包含支持基于网络切片选网的指示。该指示和PLMN支持的切片信息可以属于不同的SIB。切片信息的表征方式可以是：S-NSSAI，切片组，标准化的SST。接入层再把搜到的PLMN和其切片信息发送给NAS层。
步骤3：UE的NAS层在选择PLMN时，按照现有的优先级顺序判断该PLMN是否支持基于网络切片的选网，如果支持，再根据其切片信息判断是否支持UE想要的网络切片。UE想要的网络切片可以是基于默认业务选择这些默认业务对应的网络切片；NAS层选择能够支持想要的网络切片的最高优先级PLMN。
步骤4：HPLMN可以通过NAS信令跟新该配置(profile)文件里的内容。可以使用转向漫游透明容器(Steering of roaming transparent container)参数配置给UE。
实施例4：
图9是本申请实施例提供的无线通信方法430的示意性流程图。
如图9所示，所述方法430可包括：
S431，UE向AMF发送注册请求。
UE在刚开始，也就是第一次选网的时候，还使用现有的方式，然后，UE向AMF发起注册，在注册消息中携带请求(requested)NSSAI和UE支持基于网络切片选网的能力指示。
S432，AMF向UDM索要签约数据。
AMF向UDM索要UE的签约数据，同时发送UE支持基于网络切片选网的能力指示，还可以携带requested NSSAI。
S433，UDM基于UE能力和切片信息来确定PLMN顺序，可选的，可以确定PLMN重选计时器。
UDM根据UE能力和切片信息来决定按照优先级排列的PLMN列表(一个或多个)，支持越多切片的PLMN优先级越高。其中，切片信息可以为：
请求NSSAI，如果收到，也就是基于UE需要的网络切片来排序PLMN；
签约(subscribed)NSSAI，UDM本身就保存的UE签约的网络切片，也就是基于UE可以使用的网络切片来排序PLMN。
也即是说，网络可以基于网络切片信息来判断UE重选PLMN的计时器。例如，多个切片对应多个时长，选择最大或最小时长。可以是每个PLMN有一个计时器，或者，只有一个计时器。如果每个PLMN一个计时器，UE可以按照时长最大或最小的计时器来计时。当计时器到期后，UE进行PLMN重选。
S434a，UDM向AMF发送签约数据，包括PLMN列表。
S435a，AMF向UE发送注册接受/拒绝，包括PLMN列表。
S434b，UDM向AMF发送签约数据，包括PLMN列表。
S435b，AMF向UE发送注册接受，包括PLMN列表。
S436b，UDM向AMF更新签约数据，包括PLMN列表。
S437b，AMF向UE发送下行传输消息，包括PLMN列表。
在S434a～S437b中、UDM将S433中确定的PLMN列表(包含计时器)发给UE。可以是在注册过程中发给AMF，AMF再放在注册响应消息中发送给UE。或者，可以在注册完成之后，发给AMF，AMF再放在下行传输(DL transport)消息中发送给UE；UE收到后，根据PLMN列表和计时器来进行PLMN重选。如果没有计时器，UE可以立即或者等进入空闲态之后进行PLMN重选。
上文结合图1至图8，详细描述了本申请的方法实施例，下文结合图10至图15，详细描述本申请的装置实施例。
图10是本申请实施例的终端设备510的示意性框图。
如图10所示，所述终端设备510可包括：
获取单元511，用于获取公共陆地移动网络PLMN列表；其中，所述PLMN列表为以下中的至少一项：全球用户识别卡USIM中存储的信息、通过非接入层NAS信令获取的信息、统一数据管理UDM确定的信息；
选择单元512，用于基于所述终端设备的网络切片，在所述PLMN列表中选择PLMN。
在一些实施例中，所述PLMN列表包括：第一PLMN以及所述第一PLMN对应的第一指示信息；所述第一指示信息用于指示所述第一PLMN是否支持或允许基于网络切片选网。
在一些实施例中，所述PLMN列表包括：第二PLMN、所述第二PLMN对应的至少一个接入技术、以及所述至少一个接入技术分别对应的至少一个第二指示信息；所述至少一个第二指示信息用于指示在所述第二PLMN下的所述至少一个接入技术是否支持或允许基于网络切片选网。
在一些实施例中，在所述PLMN列表为所述USIM中存储的信息或通过所述NAS信令获取的信息时，所述终端设备的网络切片包括默认业务对应的网络切片；在所述PLMN列表为所述UDM确定的信息时，所述终端设备的网络切片包括所述终端设备请求的网络切片。
在一些实施例中，所述PLMN列表为所述UDM确定的信息；所述获取单元511具体用于：
向移动管理功能AMF发送注册请求；所述注册请求包括第三指示信息，所述第三指示信息用于指示所述终端设备是否具有基于网络切片选网的能力；
通过所述AMF接收统一数据管理UDM发送的所述PLMN列表。
在一些实施例中，所述获取单元511具体用于：
在注册过程中接收所述AMF发送的注册响应消息，所述注册响应消息包括所述PLMN列表；或
在注册完成后接收所述AMF发送的下行传输消息，所述下行传输消息包括所述PLMN列表。
在一些实施例中，所述PLMN列表中PLMN的优先级顺序根据第一网络切片确定，所述第一网络切片包括以下中的至少一项：
所述终端设备请求的网络切片、所述终端设备签约的网络切片。
在一些实施例中，所述PLMN列表中PLMN的优先级顺序根据PLMN支持的所述第一网络切片的数量确定。
在一些实施例中，所述终端设备请求的网络切片通过所述终端设备请求的网络切片选择辅助信息NSSAI确定。
在一些实施例中，所述获取单元511还可用于：
通过所述AMF接收所述UDM发送的PLMN重选计时器的配置信息；
在所述PLMN重选计时器超时或到期的情况下，触发所述终端设备进行PLMN重选。
在一些实施例中，所述PLMN列表中的每一个PLMN支持的一个网络切片对应一个计时器，所述PLMN列表中的第三PLMN对应的计时器为所述第三PLMN对应的网络切片对应的计时器中时长最大或最小的计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
在一些实施例中，所述PLMN列表中的每一个PLMN对应一个计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
在一些实施例中，所述PLMN重选计时器为所述PLMN列表对应的计时器。
在一些实施例中，所述选择单元512可用于：
接收系统消息，所述系统消息包括周围小区所在的PLMN；
基于所述PLMN列表中优先级从高到低的顺序，选择所述周围小区所在的PLMN中优先级最高的且满足以下条件的PLMN：
支持或允许基于网络切片选网以及支持所述终端设备的网络切片；和/或
对应的接入技术支持或允许基于网络切片选网以及支持所述终端设备的网络切片。
在一些实施例中，所述周围小区所在的PLMN包括第四PLMN，所述第四PLMN对应至少一个第 二接入技术；所述系统消息还包括所述第四PLMN对应的第四指示信息或所述至少一个第二接入技术分别对应的至少一个第五指示信息，所述第四指示信息用于指示所述第四PLMN支持或允许基于网络切片选网，所述至少一个第五指示信息分别用于指示所述至少一个第二接入技术支持或允许基于网络切片选网。
在一些实施例中，所述系统消息还包括所述第四PLMN支持的网络切片的切片信息；
所述切片信息包括以下中的至少一项：
单一网络切片选择辅助信息S-NSSAI、切片组、标准化的切片和/或服务类型SST。
应理解，装置实施例与方法实施例可以相互对应，类似的描述可以参照方法实施例。具体地，图10所示的终端设备510可以对应于执行本申请实施例提供的各个方法中的相应主体，并且终端设备510中的各个单元的前述和其它操作和/或功能分别为了实现本申请实施例提供的各个方法中的相应流程，为了简洁，在此不再赘述。
图11是本申请实施例的接入网设备520的示意性框图。
如图11所示，所述接入网设备520可包括：
发送单元521，用于发送系统消息；
其中，所述系统消息包括周围小区所在的公共陆地移动网络PLMN，所述周围小区所在的PLMN用于终端设备选择PLMN。
在一些实施例中，所述周围小区所在的PLMN包括第四PLMN，所述第四PLMN对应至少一个第二接入技术；所述系统消息还包括所述第四PLMN对应的第四指示信息或所述至少一个第二接入技术分别对应的至少一个第五指示信息，所述第四指示信息用于指示所述第四PLMN支持或允许基于网络切片选网，所述至少一个第五指示信息分别用于指示所述至少一个第二接入技术支持或允许基于网络切片选网。
在一些实施例中，所述系统消息还包括所述第四PLMN支持的网络切片的切片信息；
所述切片信息包括以下中的至少一项：
单一网络切片选择辅助信息S-NSSAI、切片组、标准化的切片和/或服务类型SST。
应理解，装置实施例与方法实施例可以相互对应，类似的描述可以参照方法实施例。具体地，图11所示的接入网设备520可以对应于执行本申请实施例提供的各个方法中的相应主体，并且接入网设备520中的各个单元的前述和其它操作和/或功能分别为了实现本申请实施例提供的各个方法中的相应流程，为了简洁，在此不再赘述。
图12是本申请实施例的AMF 530的示意性框图。
如图12所示，所述AMF 530可包括：
接收单元531，用于接收终端设备发送的注册请求；所述注册请求包括第三指示信息，所述第三指示信息用于指示所述终端设备是否具有基于网络切片选网的能力；
发送单元532，用于向统一数据管理UDM发送列表请求，所述列表请求包括所述第三指示信息；
所述接收单元531还用于接收所述UDM发送的公共陆地移动网络PLMN列表；
所述发送单元532还用于向所述终端设备发送所述PLMN列表。
在一些实施例中，所述发送单元532具体用于：
在注册过程中向所述终端设备发送注册响应消息，所述注册响应消息包括所述PLMN列表；或
在注册完成后向所述终端设备发送下行传输消息，所述下行传输消息包括所述PLMN列表。
在一些实施例中，所述PLMN列表中PLMN的优先级顺序根据第一网络切片确定，所述第一网络切片包括以下中的至少一项：
所述终端设备请求的网络切片、所述终端设备签约的网络切片。
在一些实施例中，所述PLMN列表中PLMN的优先级顺序根据PLMN支持的所述第一网络切片的数量确定。
在一些实施例中，所述终端设备请求的网络切片通过所述终端设备请求的网络切片选择辅助信息NSSAI确定。
在一些实施例中，所述接收单元531具体用于：
接收所述UDM发送的PLMN重选计时器的配置信息；其中，所述PLMN重选计时器用于触发所述终端设备进行PLMN重选；
向所述终端设备发送所述配置信息。
在一些实施例中，所述PLMN列表中的每一个PLMN支持的一个网络切片对应一个计时器，所述PLMN列表中的第三PLMN对应的计时器为所述第三PLMN对应的网络切片对应的计时器中时长最大或最小的计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时 长最小的计时器。
在一些实施例中，所述PLMN列表中的每一个PLMN对应一个计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
在一些实施例中，所述PLMN重选计时器为所述PLMN列表对应的计时器。
在一些实施例中，所述PLMN列表包括：第一PLMN以及所述第一PLMN对应的第一指示信息；所述第一指示信息用于指示所述第一PLMN是否支持或允许基于网络切片选网。
在一些实施例中，所述PLMN列表包括：第二PLMN、所述第二PLMN对应的至少一个接入技术、以及所述至少一个接入技术分别对应的至少一个第二指示信息；所述至少一个第二指示信息用于指示在所述第二PLMN下的所述至少一个接入技术是否支持或允许基于网络切片选网。
应理解，装置实施例与方法实施例可以相互对应，类似的描述可以参照方法实施例。具体地，图12所示的AMF 530可以对应于执行本申请实施例提供的各个方法中的相应主体，并且AMF 530中的各个单元的前述和其它操作和/或功能分别为了实现本申请实施例提供的各个方法中的相应流程，为了简洁，在此不再赘述。
图13是本申请实施例的UDM 540的示意性框图。
如图13所示，所述UDM 540可包括：
接收单元541，用于接收移动管理功能AMF发送的列表请求，所述列表请求包括第三指示信息，所述第三指示信息用于指示终端设备是否具有基于网络切片选网的能力；
确定单元542，用于基于所述第三指示信息确定公共陆地移动网络PLMN列表；
发送单元543，用于向所述AMF发送所述PLMN列表。
在一些实施例中，所述发送单元543具体用于：
在注册过程中向所述AMF发送所述PLMN列表；或
在注册完成后向所述AMF发送所述PLMN列表。
在一些实施例中，所述确定单元542具体用于：
在所述第三指示信息用于指示终端设备具有基于网络切片选网的能力时，根据第一网络切片确定所述PLMN列表中PLMN的优先级顺序，所述第一网络切片包括以下中的至少一项：
所述终端设备请求的网络切片、所述终端设备签约的网络切片。
在一些实施例中，所述PLMN列表中PLMN的优先级顺序根据PLMN支持的所述第一网络切片的数量确定。
在一些实施例中，所述终端设备请求的网络切片通过所述终端设备请求的网络切片选择辅助信息NSSAI确定。
在一些实施例中，所述发送单元543还用于：
向所述AMF发送PLMN重选计时器的配置信息；
其中，所述PLMN重选计时器用于触发终端设备进行PLMN重选。
在一些实施例中，所述PLMN列表中的每一个PLMN支持的一个网络切片对应一个计时器，所述PLMN列表中的第三PLMN对应的计时器为所述第三PLMN对应的网络切片对应的计时器中时长最大或最小的计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
在一些实施例中，所述PLMN列表中的每一个PLMN对应一个计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
在一些实施例中，所述PLMN重选计时器为所述PLMN列表对应的计时器。
在一些实施例中，所述PLMN列表包括：第一PLMN以及所述第一PLMN对应的第一指示信息；所述第一指示信息用于指示所述第一PLMN是否支持或允许基于网络切片选网。
在一些实施例中，所述PLMN列表包括：第二PLMN、所述第二PLMN对应的至少一个接入技术、以及所述至少一个接入技术分别对应的至少一个第二指示信息；所述至少一个第二指示信息用于指示在所述第二PLMN下的所述至少一个接入技术是否支持或允许基于网络切片选网。
应理解，装置实施例与方法实施例可以相互对应，类似的描述可以参照方法实施例。具体地，图13所示的UDM 540可以对应于执行本申请实施例提供的各个方法中的相应主体，并且UDM 540中的各个单元的前述和其它操作和/或功能分别为了实现本申请实施例提供的各个方法中的相应流程，为了简洁，在此不再赘述。
上文中结合附图从功能模块的角度描述了本申请实施例的通信设备。应理解，该功能模块可以通过硬件形式实现，也可以通过软件形式的指令实现，还可以通过硬件和软件模块组合实现。具体地，本申请实施例中的方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路和/或软件形式的指令完 成，结合本申请实施例公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。可选地，软件模块可以位于随机存储器，闪存、只读存储器、可编程只读存储器、电可擦写可编程存储器、寄存器等本领域的成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法实施例中的步骤。
例如，上文涉及的获取单元511、发送单元521、接收单元531、发送单元532、接收单元541或发送单元543可由收发器实现，上文涉及的选择单元512或确定单元542可由处理器实现。
图14是本申请实施例的通信设备600示意性结构图。
如图14所示，所述通信设备600可包括处理器610。
其中，处理器610可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
如图14所示，通信设备600还可以包括存储器620。
其中，该存储器620可以用于存储指示信息，还可以用于存储处理器610执行的代码、指令等。其中，处理器610可以从存储器620中调用并运行计算机程序，以实现本申请实施例中的方法。存储器620可以是独立于处理器610的一个单独的器件，也可以集成在处理器610中。
如图14所示，通信设备600还可以包括收发器630。
其中，处理器610可以控制该收发器630与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。收发器630可以包括发射机和接收机。收发器630还可以进一步包括天线，天线的数量可以为一个或多个。
应当理解，该通信设备600中的各个组件通过总线系统相连，其中，总线系统除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。
还应理解，该通信设备600可为本申请实施例的终端设备、接入网设备、AMF或UDM，并且该通信设备600可以实现本申请实施例的各个方法中由终端设备、接入网设备、AMF或UDM实现的相应流程，也就是说，本申请实施例的通信设备600可对应于本申请实施例中的终端设备510、接入网设备520、AMF 530或UDM 540，并可以对应于执行根据本申请实施例提供的无线通信方法中的相应主体，为了简洁，在此不再赘述。
此外，本申请实施例中还提供了一种芯片。
例如，芯片可能是一种集成电路芯片，具有信号的处理能力，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。所述芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。可选地，该芯片可应用到各种通信设备中，使得安装有该芯片的通信设备能够执行本申请实施例中的公开的各方法、步骤及逻辑框图。
图15是根据本申请实施例的芯片700的示意性结构图。
如图15所示，所述芯片700包括处理器710。
其中，处理器710可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
如图15所示，所述芯片700还可以包括存储器720。
其中，处理器710可以从存储器720中调用并运行计算机程序，以实现本申请实施例中的方法。该存储器720可以用于存储指示信息，还可以用于存储处理器710执行的代码、指令等。存储器720可以是独立于处理器710的一个单独的器件，也可以集成在处理器710中。
如图15所示，所述芯片700还可以包括输入接口730。
其中，处理器710可以控制该输入接口730与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。
如图15所示，所述芯片700还可以包括输出接口740。
其中，处理器710可以控制该输出接口740与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。
应理解，所述芯片700可应用于本申请实施例中的终端设备、接入网设备、AMF或UDM，并且该芯片可以实现本申请实施例的各个方法中由终端设备、接入网设备、AMF或UDM实现的相应流程，为了简洁，在此不再赘述。
还应理解，该芯片700中的各个组件通过总线系统相连，其中，总线系统除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。
上文涉及的处理器可以包括但不限于：
通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等等。
所述处理器可以用于实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。结合本申请 实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
上文涉及的存储器包括但不限于：
易失性存储器和/或非易失性存储器。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。
应注意，本文描述的存储器旨在包括这些和其它任意适合类型的存储器。
本申请实施例中还提供了一种计算机可读存储介质，用于存储计算机程序。该计算机可读存储介质存储一个或多个程序，该一个或多个程序包括指令，该指令当被包括多个应用程序的便携式电子设备执行时，能够使该便携式电子设备执行本申请提供的无线通信方法。可选的，该计算机可读存储介质可应用于本申请实施例中的终端设备、接入网设备、AMF或UDM，并且该计算机程序使得计算机执行本申请实施例的各个方法中由终端设备、接入网设备、AMF或UDM实现的相应流程，为了简洁，在此不再赘述。
本申请实施例中还提供了一种计算机程序产品，包括计算机程序。可选的，该计算机程序产品可应用于本申请实施例中的终端设备、接入网设备、AMF或UDM，并且该计算机程序使得计算机执行本申请实施例的各个方法中由终端设备、接入网设备、AMF或UDM实现的相应流程，为了简洁，在此不再赘述。
本申请实施例中还提供了一种计算机程序。当该计算机程序被计算机执行时，使得计算机可以执行本申请提供的无线通信方法。可选的，该计算机程序可应用于本申请实施例中的终端设备、接入网设备、AMF或UDM，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由终端设备、接入网设备、AMF或UDM实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种通信系统，所述通信系统可以包括上述涉及的终端设备、接入网设备、AMF或UDM，以形成如图1或图2所示的通信系统100，为了简洁，在此不再赘述。需要说明的是，本文中的术语“系统”等也可以称为“网络管理架构”或者“网络系统”等。
还应当理解，在本申请实施例和所附权利要求书中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请实施例。例如，在本申请实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”、“上述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
所属领域的技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请实施例的范围。如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
所属领域的技术人员还可以意识到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。在本申请提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例中单元或模块或组件的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如，多个单元或模块或组件可以结合或者可以集成到另一个系统，或一些单元或模块或组件可以忽略，或不执行。又例如，上述作为分离/显示部件说明的单元/模块/组件可以是或者也可以不是物理上分开的，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元/ 模块/组件来实现本申请实施例的目的。最后，需要说明的是，上文中显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
以上内容，仅为本申请实施例的具体实施方式，但本申请实施例的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请实施例揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请实施例的保护范围之内。因此，本申请实施例的保护范围应以权利要求的保护范围为准。

Claims (52)

  1. 一种无线通信方法，其特征在于，所述方法适用于终端设备，所述方法包括：
    获取公共陆地移动网络PLMN列表；其中，所述PLMN列表为以下中的至少一项：全球用户识别卡USIM中存储的信息、通过非接入层NAS信令获取的信息、统一数据管理UDM确定的信息；
    基于所述终端设备的网络切片，在所述PLMN列表中选择PLMN。
  2. 根据权利要求1所述的方法，其特征在于，所述PLMN列表包括：第一PLMN以及所述第一PLMN对应的第一指示信息；所述第一指示信息用于指示所述第一PLMN是否支持或允许基于网络切片选网。
  3. 根据权利要求1所述的方法，其特征在于，所述PLMN列表包括：第二PLMN、所述第二PLMN对应的至少一个接入技术、以及所述至少一个接入技术分别对应的至少一个第二指示信息；所述至少一个第二指示信息用于指示在所述第二PLMN下的所述至少一个接入技术是否支持或允许基于网络切片选网。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，在所述PLMN列表为所述USIM中存储的信息或通过所述NAS信令获取的信息时，所述终端设备的网络切片包括默认业务对应的网络切片；在所述PLMN列表为所述UDM确定的信息时，所述终端设备的网络切片包括所述终端设备请求的网络切片。
  5. 根据权利要求1至4中任一项所述的方法，其特征在于，所述PLMN列表为所述UDM确定的信息；所述获取公共陆地移动网络PLMN列表，包括：
    向移动管理功能AMF发送注册请求；所述注册请求包括第三指示信息，所述第三指示信息用于指示所述终端设备是否具有基于网络切片选网的能力；
    通过所述AMF接收统一数据管理UDM发送的所述PLMN列表。
  6. 根据权利要求5所述的方法，其特征在于，所述通过所述AMF接收统一数据管理UDM发送的所述PLMN列表，包括：
    在注册过程中接收所述AMF发送的注册响应消息，所述注册响应消息包括所述PLMN列表；或
    在注册完成后接收所述AMF发送的下行传输消息，所述下行传输消息包括所述PLMN列表。
  7. 根据权利要求5或6所述的方法，其特征在于，所述PLMN列表中PLMN的优先级顺序根据第一网络切片确定，所述第一网络切片包括以下中的至少一项：
    所述终端设备请求的网络切片、所述终端设备签约的网络切片。
  8. 根据权利要求7所述的方法，其特征在于，所述PLMN列表中PLMN的优先级顺序根据PLMN支持的所述第一网络切片的数量确定。
  9. 根据权利要求4或7所述的方法，其特征在于，所述终端设备请求的网络切片通过所述终端设备请求的网络切片选择辅助信息NSSAI确定。
  10. 根据权利要求6至9中任一项所述的方法，其特征在于，所述方法还包括：
    通过所述AMF接收所述UDM发送的PLMN重选计时器的配置信息；
    在所述PLMN重选计时器超时或到期的情况下，触发所述终端设备进行PLMN重选。
  11. 根据权利要求10所述的方法，其特征在于，所述PLMN列表中的每一个PLMN支持的一个网络切片对应一个计时器，所述PLMN列表中的第三PLMN对应的计时器为所述第三PLMN对应的网络切片对应的计时器中时长最大或最小的计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
  12. 根据权利要求10所述的方法，其特征在于，所述PLMN列表中的每一个PLMN对应一个计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
  13. 根据权利要求10所述的方法，其特征在于，所述PLMN重选计时器为所述PLMN列表对应的计时器。
  14. 根据权利要求1至13中任一项所述的方法，其特征在于，所述基于所述终端设备的网络切片，在所述PLMN列表中选择PLMN，包括：
    接收系统消息，所述系统消息包括周围小区所在的PLMN；
    基于所述PLMN列表中优先级从高到低的顺序，选择所述周围小区所在的PLMN中优先级最高的且满足以下条件的PLMN：
    支持或允许基于网络切片选网以及支持所述终端设备的网络切片；和/或
    对应的接入技术支持或允许基于网络切片选网以及支持所述终端设备的网络切片。
  15. 根据权利要求14所述的方法，其特征在于，所述周围小区所在的PLMN包括第四PLMN，所述第四PLMN对应至少一个第二接入技术；所述系统消息还包括所述第四PLMN对应的第四指示信息或所述至少一个第二接入技术分别对应的至少一个第五指示信息，所述第四指示信息用于指示所述第四PLMN支持或允许基于网络切片选网，所述至少一个第五指示信息分别用于指示所述至少一个第二接入技术支持或允许基于网络切片选网。
  16. 根据权利要求15或16所述的方法，其特征在于，所述系统消息还包括所述第四PLMN支持的网络切片的切片信息；
    所述切片信息包括以下中的至少一项：
    单一网络切片选择辅助信息S-NSSAI、切片组、标准化的切片和/或服务类型SST。
  17. 一种无线通信方法，其特征在于，所述方法适用于接入网设备，所述方法包括：
    发送系统消息；
    其中，所述系统消息包括周围小区所在的公共陆地移动网络PLMN，所述周围小区所在的PLMN用于终端设备选择PLMN。
  18. 根据权利要求17所述的方法，其特征在于，所述周围小区所在的PLMN包括第四PLMN，所述第四PLMN对应至少一个第二接入技术；所述系统消息还包括所述第四PLMN对应的第四指示信息或所述至少一个第二接入技术分别对应的至少一个第五指示信息，所述第四指示信息用于指示所述第四PLMN支持或允许基于网络切片选网，所述至少一个第五指示信息分别用于指示所述至少一个第二接入技术支持或允许基于网络切片选网。
  19. 根据权利要求17或18所述的方法，其特征在于，所述系统消息还包括所述第四PLMN支持的网络切片的切片信息；
    所述切片信息包括以下中的至少一项：
    单一网络切片选择辅助信息S-NSSAI、切片组、标准化的切片和/或服务类型SST。
  20. 一种无线通信方法，其特征在于，所述方法适用于移动管理功能AMF，所述方法包括：
    接收终端设备发送的注册请求；所述注册请求包括第三指示信息，所述第三指示信息用于指示所述终端设备是否具有基于网络切片选网的能力；
    向统一数据管理UDM发送列表请求，所述列表请求包括所述第三指示信息；
    接收所述UDM发送的公共陆地移动网络PLMN列表；
    向所述终端设备发送所述PLMN列表。
  21. 根据权利要求20所述的方法，其特征在于，所述向所述终端设备发送所述PLMN列表，包括：
    在注册过程中向所述终端设备发送注册响应消息，所述注册响应消息包括所述PLMN列表；或
    在注册完成后向所述终端设备发送下行传输消息，所述下行传输消息包括所述PLMN列表。
  22. 根据权利要求20或21所述的方法，其特征在于，所述PLMN列表中PLMN的优先级顺序根据第一网络切片确定，所述第一网络切片包括以下中的至少一项：
    所述终端设备请求的网络切片、所述终端设备签约的网络切片。
  23. 根据权利要求22所述的方法，其特征在于，所述PLMN列表中PLMN的优先级顺序根据PLMN支持的所述第一网络切片的数量确定。
  24. 根据权利要求22所述的方法，其特征在于，所述终端设备请求的网络切片通过所述终端设备请求的网络切片选择辅助信息NSSAI确定。
  25. 根据权利要求20至24中任一项所述的方法，其特征在于，所述方法还包括：
    接收所述UDM发送的PLMN重选计时器的配置信息；其中，所述PLMN重选计时器用于触发所述终端设备进行PLMN重选；
    向所述终端设备发送所述配置信息。
  26. 根据权利要求25所述的方法，其特征在于，所述PLMN列表中的每一个PLMN支持的一个网络切片对应一个计时器，所述PLMN列表中的第三PLMN对应的计时器为所述第三PLMN对应的网络切片对应的计时器中时长最大或最小的计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
  27. 根据权利要求25所述的方法，其特征在于，所述PLMN列表中的每一个PLMN对应一个计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
  28. 根据权利要求25所述的方法，其特征在于，所述PLMN重选计时器为所述PLMN列表对应的计时器。
  29. 根据权利要求20至28中任一项所述的方法，其特征在于，所述PLMN列表包括：第一PLMN 以及所述第一PLMN对应的第一指示信息；所述第一指示信息用于指示所述第一PLMN是否支持或允许基于网络切片选网。
  30. 根据权利要求20至28中任一项所述的方法，其特征在于，所述PLMN列表包括：第二PLMN、所述第二PLMN对应的至少一个接入技术、以及所述至少一个接入技术分别对应的至少一个第二指示信息；所述至少一个第二指示信息用于指示在所述第二PLMN下的所述至少一个接入技术是否支持或允许基于网络切片选网。
  31. 一种无线通信方法，其特征在于，所述方法适用于统一数据管理UDM，所述方法包括：
    接收移动管理功能AMF发送的列表请求，所述列表请求包括第三指示信息，所述第三指示信息用于指示终端设备是否具有基于网络切片选网的能力；
    基于所述第三指示信息确定公共陆地移动网络PLMN列表；
    向所述AMF发送所述PLMN列表。
  32. 根据权利要求31所述的方法，其特征在于，所述向所述AMF发送所述PLMN列表，包括：
    在注册过程中向所述AMF发送所述PLMN列表；或
    在注册完成后向所述AMF发送所述PLMN列表。
  33. 根据权利要求32或32所述的方法，其特征在于，所述基于所述第三指示信息确定公共陆地移动网络PLMN列表，包括：
    在所述第三指示信息用于指示终端设备具有基于网络切片选网的能力时，根据第一网络切片确定所述PLMN列表中PLMN的优先级顺序，所述第一网络切片包括以下中的至少一项：
    所述终端设备请求的网络切片、所述终端设备签约的网络切片。
  34. 根据权利要求33所述的方法，其特征在于，所述PLMN列表中PLMN的优先级顺序根据PLMN支持的所述第一网络切片的数量确定。
  35. 根据权利要求33所述的方法，其特征在于，所述终端设备请求的网络切片通过所述终端设备请求的网络切片选择辅助信息NSSAI确定。
  36. 根据权利要求31至35中任一项所述的方法，其特征在于，所述方法还包括：
    向所述AMF发送PLMN重选计时器的配置信息；
    其中，所述PLMN重选计时器用于触发终端设备进行PLMN重选。
  37. 根据权利要求36所述的方法，其特征在于，所述PLMN列表中的每一个PLMN支持的一个网络切片对应一个计时器，所述PLMN列表中的第三PLMN对应的计时器为所述第三PLMN对应的网络切片对应的计时器中时长最大或最小的计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
  38. 根据权利要求36所述的方法，其特征在于，所述PLMN列表中的每一个PLMN对应一个计时器，所述PLMN重选计时器为所述PLMN列表中的PLMN对应的计时器中时长最大或时长最小的计时器。
  39. 根据权利要求36所述的方法，其特征在于，所述PLMN重选计时器为所述PLMN列表对应的计时器。
  40. 根据权利要求31至39中任一项所述的方法，其特征在于，所述PLMN列表包括：第一PLMN以及所述第一PLMN对应的第一指示信息；所述第一指示信息用于指示所述第一PLMN是否支持或允许基于网络切片选网。
  41. 根据权利要求31至39中任一项所述的方法，其特征在于，所述PLMN列表包括：第二PLMN、所述第二PLMN对应的至少一个接入技术、以及所述至少一个接入技术分别对应的至少一个第二指示信息；所述至少一个第二指示信息用于指示在所述第二PLMN下的所述至少一个接入技术是否支持或允许基于网络切片选网。
  42. 一种终端设备，其特征在于，包括：
    获取单元，用于获取公共陆地移动网络PLMN列表；其中，所述PLMN列表为以下中的至少一项：全球用户识别卡USIM中存储的信息、通过非接入层NAS信令获取的信息、统一数据管理UDM确定的信息；
    选择单元，用于基于所述终端设备的网络切片，在所述PLMN列表中选择PLMN。
  43. 一种接入网设备，其特征在于，包括：
    发送单元，用于发送系统消息；
    其中，所述系统消息包括周围小区所在的公共陆地移动网络PLMN，所述周围小区所在的PLMN用于终端设备选择PLMN。
  44. 一种移动管理功能AMF，其特征在于，包括：
    接收单元，用于接收终端设备发送的注册请求；所述注册请求包括第三指示信息，所述第三指示信息用于指示所述终端设备是否具有基于网络切片选网的能力；
    发送单元，用于向统一数据管理UDM发送列表请求，所述列表请求包括所述第三指示信息；
    所述接收单元还用于接收所述UDM发送的公共陆地移动网络PLMN列表；
    所述发送单元还用于向所述终端设备发送所述PLMN列表。
  45. 一种统一数据管理UDM，其特征在于，包括：
    接收单元，用于接收移动管理功能AMF发送的列表请求，所述列表请求包括第三指示信息，所述第三指示信息用于指示终端设备是否具有基于网络切片选网的能力；
    确定单元，用于基于所述第三指示信息确定公共陆地移动网络PLMN列表；
    发送单元，用于向所述AMF发送所述PLMN列表。
  46. 一种终端设备，其特征在于，包括：
    处理器和存储器，所述存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，以执行权利要求1至16中任一项所述的方法。
  47. 一种接入网设备，其特征在于，包括：
    处理器和存储器，所述存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，以执行权利要求17至19中任一项所述的方法。
  48. 一种核心网设备，其特征在于，包括：
    处理器和存储器，所述存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，以执行如权利要求20至30中任一项所述的方法或如权利要求31至41中任一项所述的方法。
  49. 一种芯片，其特征在于，包括：
    处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求1至16中任一项所述的方法、如权利要求17至19中任一项所述的方法、如权利要求20至30中任一项所述的方法或如权利要求31至41中任一项所述的方法。
  50. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求1至16中任一项所述的方法、如权利要求17至19中任一项所述的方法、如权利要求20至30中任一项所述的方法或如权利要求31至41中任一项所述的方法。
  51. 一种计算机程序产品，其特征在于，包括计算机程序指令，所述计算机程序指令使得计算机执行如权利要求1至16中任一项所述的方法、如权利要求17至19中任一项所述的方法、如权利要求20至30中任一项所述的方法或如权利要求31至41中任一项所述的方法。
  52. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求1至16中任一项所述的方法、如权利要求17至19中任一项所述的方法、如权利要求20至30中任一项所述的方法或如权利要求31至41中任一项所述的方法。
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