WO2023124457A1 - Procédé et appareil de sélection de réseau - Google Patents

Procédé et appareil de sélection de réseau Download PDF

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Publication number
WO2023124457A1
WO2023124457A1 PCT/CN2022/127047 CN2022127047W WO2023124457A1 WO 2023124457 A1 WO2023124457 A1 WO 2023124457A1 CN 2022127047 W CN2022127047 W CN 2022127047W WO 2023124457 A1 WO2023124457 A1 WO 2023124457A1
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WIPO (PCT)
Prior art keywords
network
information
service
access
terminal device
Prior art date
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PCT/CN2022/127047
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English (en)
Chinese (zh)
Inventor
李文正
朱强华
吴问付
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华为技术有限公司
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Publication of WO2023124457A1 publication Critical patent/WO2023124457A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration

Definitions

  • the present application relates to the field of communications, and, more particularly, to a method and apparatus for selecting a network.
  • Non-public network is a kind of non-public 5G network, which can rely on the network function of public land mobile network (PLMN), such as public network integrated NPN (public network integrated NPN) , PNI-NPN), and can also be realized without relying on the network function of PLMN, such as independently deploying NPN (standalone NPN, SNPN).
  • PLMN public land mobile network
  • NPN-NPN public network integrated NPN
  • PLMN public network integrated NPN
  • SNPN standalone NPN
  • PNI-NPN can be implemented using network slicing in PLMN.
  • a closed access group (CAG) function is used.
  • a CAG may identify a group of users that are allowed to access a cell associated with the CAG, ie a CAG cell.
  • the CAG cell In order to prevent the user equipment (user equipment, UE) that is not allowed to access the CAG cell from automatically selecting and accessing the CAG cell, the CAG cell broadcasts one or more CAG identities, and the available CAG list and indication information are configured on the UE, and the indication information indicates Whether the UE is only allowed to access the 5G system through the CAG cell, the UE selects the PNI-NPN network according to the identifier broadcast by the CAG cell.
  • the CAG cell broadcasts one or more CAG identities, and the available CAG list and indication information are configured on the UE, and the indication information indicates Whether the UE is only allowed to access the 5G system through the CAG cell, the UE selects the PNI-NPN network according to the identifier broadcast by the CAG cell.
  • the SNPN network is independently deployed and does not depend on the PLMN network.
  • the SNPN network is identified by a PLMN identifier (PLMN ID) and a network identifier (NID).
  • PLMN ID PLMN identifier
  • NID network identifier
  • its cell broadcasts the PLMN ID and NID, and the UE selects the SNPN network according to the broadcast information.
  • the service network operators in this area will provide specific services for UEs with specific service subscription information according to the needs of business scenarios (specific scenarios such as those offered in stadiums, concerts, parks).
  • specific scenarios such as those offered in stadiums, concerts, parks.
  • the present application provides a method and device for selecting a network, which can reduce the time delay for terminal equipment to access the network and avoid network access congestion.
  • a method for selecting a network may be executed by a terminal device, or may also be executed by a component configured in the terminal device (such as a chip or a chip system, etc.), which is not limited in the present application.
  • the method includes: the terminal device acquires first information, the first information includes service information supported by the network, the terminal device selects a first network to reside on according to the first service and the first information, and the first network supports the first service , the terminal device registers on the first network.
  • the terminal device can select a network to reside on based on service information supported by the network, and register with the selected network to reside on, so as to further obtain desired network services. Therefore, according to the method provided in this application, the time delay for the terminal device to access the correct network (the correct network can meet the network service requirements of the terminal device to the greatest extent) can be reduced, and the terminal device can be prevented from accessing the wrong network (the wrong network cannot meet the network service requirements of the terminal device). business demand) caused by congestion.
  • the service information includes at least one of the following: a service identifier, a service category, or a service provider.
  • the service information further includes at least one of the following: service access time, or service access location, where the service access time or service access location
  • the input location is associated with at least one of the service identifier, the service category, or the service provider.
  • the terminal device configures the corresponding relationship between the identifier of the network that can be accessed and the service information supported by the network, and the terminal device according to the network identifier broadcast by the access network device and the The corresponding relationship acquires the first information.
  • the terminal device can select a network that can provide the network service expected by the terminal device to camp on and register according to the locally configured service information supported by each network.
  • the terminal device receives a broadcast message from the access network device, where the broadcast message includes the first information; or, the terminal device receives user subscription information from a network element of the core network , the user subscription information includes the first information.
  • the terminal device can obtain service information supported by the network through broadcast messages or user subscription information, and further select a network that can provide the network service expected by the terminal device to reside and register.
  • the terminal device before the terminal device obtains the first information, the terminal device sends a query request to the access network device or core network element, and the query request is used to query the first information .
  • the terminal device queries the first information before initiating a registration request, which can reduce the resource overhead of the air interface compared with the solution of obtaining the first information through broadcast messages.
  • the terminal device receives second information from the network device, the second information indicating that the network device supports the terminal device to access the network device based on service information, or the second information Indicates that the network device only supports terminal devices to access the network device based on service information.
  • the network device includes access network devices and/or core network elements, and the terminal device selects a network based on the first service, first information and second information.
  • the terminal device can select network devices of different access types according to the second information, so that the terminal device can more accurately access the desired network device that can support the first service.
  • the terminal device selects the resident first service that supports only the first service access according to the first service, the first information, the second information, and the broadcast message of the network.
  • the network or the terminal device selects the resident first network that supports the first service access according to the first service, the first information, the second information, and the broadcast message of the network; or the terminal device selects the resident first network that supports the first service access according to the first service, the first information, The second information and the broadcast message of the network select the resident first network that does not broadcast and supports the first service access.
  • the terminal device can select the first network access with higher network priority through manual or automatic network selection mode.
  • the first network has the highest priority, so the home network selected by the terminal device is the first network. .
  • a method for selecting a network may be executed by an access network device, or may also be executed by a component (such as a chip or a chip system, etc.) configured in the access network device, which is not limited in this application.
  • the method includes: the access network device receives first information from a network element of the core network, the first information includes service information supported by the network, the access network device sends the first information to the terminal device, and the first information is used for the terminal device Select the network to reside on.
  • the terminal device can select a network to reside on based on service information supported by the network, and register on the selected network to further obtain desired network services. Therefore, according to the method provided in this application, the time delay for the terminal device to access the correct network (the correct network can meet the network service requirements of the terminal device to the greatest extent) can be reduced, and the terminal device can be prevented from accessing the wrong network (the wrong network cannot meet the network service requirements of the terminal device). business demand) caused by congestion.
  • the service information includes at least one of the following: a service identifier, a service category, or a service provider.
  • the service information further includes at least one of the following: the access time of the service, or the access location of the service, wherein the access time of the service or the location of the service The access location is associated with at least one of the service identifier, the service category, or the service provider.
  • the first information is carried in a broadcast message.
  • the access network device updates service information supported by the network according to the first information.
  • the service information supported by the access network device changes, the service information supported by the network can be updated according to the first information, so that the subsequent terminal device can accurately select the network that can provide the network service expected by the terminal device to reside on and register.
  • the access network device sends second information to the terminal device, the second information indicating that the network device supports the terminal device to access the network device based on service information, or the first information
  • the second information indicates that the network equipment only supports terminal equipment to access the network equipment based on service information, and the network equipment includes the access network equipment and/or core network elements.
  • the terminal device can select network devices of different access types according to the second information, so that the terminal device can more accurately access the desired network device.
  • a method for selecting a network is provided, and the method can be executed by a core network element.
  • the method includes: the network element of the core network updates the first information according to the network management system or local configuration, the first information includes service information supported by the network, the first information is used for the terminal equipment to select a network to reside on, and the network element of the core network sends The terminal device or the access network device sends the first information.
  • the terminal device can select a network to reside on based on service information supported by the network, and register on the selected network to further obtain desired network services. Therefore, according to the method provided in this application, the time delay for the terminal device to access the correct network (the correct network can meet the network service requirements of the terminal device to the greatest extent) can be reduced, and the terminal device can be prevented from accessing the wrong network (the wrong network cannot meet the network service requirements of the terminal device). business demand) caused by congestion.
  • the service information includes at least one of the following: a service identifier, a service category, or a service provider.
  • the service information further includes at least one of the following: the access time of the service, or the access location of the service, wherein the access time of the service or the location of the service The access location is associated with at least one of the service identifier, the service category, or the service provider.
  • a core network element receives a query request, where the query request is used to query the first information.
  • the terminal device inquires the first information from the network element of the core network before initiating a registration request. Compared with the solution of obtaining the first information through a broadcast message, the resource overhead of the air interface can be reduced.
  • the network element of the core network sends second information, the second information indicating that the network device supports terminal devices accessing the network device based on service information, or the second information indicating that The network device only supports the terminal device to access the network device based on service information, and the network device includes the access network device and/or the network element of the core network.
  • the terminal device can select network devices of different access types according to the second information, so that the terminal device can more accurately access the desired network device.
  • a device for selecting a network may be a terminal device, or may also be a component configured in the terminal device (such as a chip or a chip system, etc.), which is not limited in this application.
  • the device includes a processing unit: used to obtain first information, the first information includes service information supported by the network, and select a first network to reside on according to the first service and the first information, and the first network supports the first service , and register with the first network.
  • the service information includes at least one of the following: a service identifier, a service category, or a service provider.
  • the service information further includes at least one of the following: service access time, or service access location, where the service access time or service access location
  • the input location is associated with at least one of the service identifier, the service category, or the service provider.
  • the processing unit is further configured to configure the correspondence between identifiers of accessible networks and service information supported by the network, according to the network identifier broadcast by the access network device and The corresponding relationship acquires the first information.
  • the apparatus further includes a transceiver unit configured to receive a broadcast message from the access network device, where the broadcast message includes the first information; or, the transceiver unit is configured to receive User subscription information from a network element of the core network, where the user subscription information includes the first information.
  • the transceiver unit before obtaining the first information, sends a query request to the access network device or a core network element, where the query request is used to query the first information.
  • the transceiver unit is further configured to receive second information from the network device, the second information indicating that the network device supports terminal devices accessing the network device based on service information, or the The second information indicates that the network device only supports the terminal device to access the network device based on service information.
  • the network device includes the access network device and/or the core network element. Information selection network.
  • the processing unit is configured to select a resident service that only supports access to the first service according to the first service, the first information, the second information, and the broadcast message of the network.
  • the first network; or according to the first service, the first information, the second information, and the broadcast message of the network to select the resident first network that supports the first service access; or according to the first service, the first information, the second information, and the broadcast message of the network selects the first network that resides and does not broadcast to support the first service access.
  • a device for selecting a network may be an access network device, or may also be a component configured in the access network device (such as a chip or a chip system, etc.), which is not limited in this application.
  • the device includes: a transceiver unit, configured to receive first information from a network element of the core network, the first information including service information supported by the network, and the transceiver unit is also configured to send the first information to the terminal device, the first information is used Select the network on which the terminal device resides.
  • the service information includes at least one of the following: a service identifier, a service category, or a service provider.
  • the service information further includes at least one of the following: service access time, or service access location, wherein, the service access time or service location The access location is associated with at least one of the service identifier, the service category, or the service provider.
  • the first information is carried in a broadcast message.
  • the apparatus further includes a processing unit configured to update the service information supported by the network according to the first information.
  • the transceiving unit is further configured to send second information to the terminal device, the second information indicating that the network device supports the terminal device to access the network device based on service information, or The second information indicates that the network device only supports the terminal device to access the network device based on service information, and the network device includes the access network device and/or core network elements.
  • a device for selecting a network may be a network element of a core network.
  • the device includes a processing unit and a transceiver unit: the processing unit is used to update the first information according to the network management system or local configuration, the first information includes service information supported by the network, and the first information is used for the terminal device to select the network on which to reside , the transceiving unit is configured to send the first information to the terminal device or the access network device.
  • the service information includes at least one of the following: a service identifier, a service category, or a service provider.
  • the service information further includes at least one of the following: service access time, or service access location, wherein, the service access time or service location The access location is associated with at least one of the service identifier, the service category, or the service provider.
  • the transceiving unit is further configured to receive a query request, where the query request is used to query the first information.
  • the transceiver unit is further configured to send second information, the second information indicating that the network device supports terminal devices accessing the network device based on service information, or the second information
  • the information indicates that the network device only supports the terminal device to access the network device based on the service information, and the network device includes the access network device and/or the network element of the core network.
  • a communication device the device includes a processor, the processor is coupled with a memory, and can be used to execute instructions in the memory, so as to implement the above first aspect or any possible implementation manner of the first aspect method.
  • the device further includes a memory, and the memory and the processor may be deployed separately or in a centralized manner.
  • the device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication interface may be a transceiver, or an input/output interface.
  • the device is a chip configured in a terminal device.
  • the communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip or chip system.
  • the processor may also be embodied as a processing circuit or logic circuit.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • the above-mentioned processor can be one or more chips
  • the input circuit can be an input pin
  • the output circuit can be an output pin
  • the processing circuit can be a transistor, a gate circuit, a flip-flop and various logic circuits, etc. .
  • the input signal received by the input circuit may be received and input by the receiver, but the signal output by the output circuit may be but not limited to be output to the transmitter and transmitted by the transmitter, and the input circuit and the output circuit may be The same circuit, which is used as an input circuit and an output circuit at different times.
  • the embodiment of the present application does not limit the specific implementation manners of the processor and various circuits.
  • a communication device the device includes a processor, the processor is coupled with a memory, and can be used to execute instructions in the memory, so as to realize the above-mentioned second or third aspect, or the second or third aspect A method in any of the possible implementations.
  • the device further includes a memory, and the memory and the processor may be deployed separately or in a centralized manner.
  • the device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication interface may be a transceiver, or an input/output interface.
  • the device is a chip configured in an access network device.
  • the communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip or chip system.
  • the processor may also be embodied as a processing circuit or logic circuit.
  • the device is a core network element.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • the above-mentioned processor can be one or more chips
  • the input circuit can be an input pin
  • the output circuit can be an output pin
  • the processing circuit can be a transistor, a gate circuit, a flip-flop and various logic circuits, etc. .
  • the input signal received by the input circuit may be received and input by the receiver, but the signal output by the output circuit may be but not limited to be output to the transmitter and transmitted by the transmitter, and the input circuit and the output circuit may be The same circuit, which is used as an input circuit and an output circuit at different times.
  • the embodiment of the present application does not limit the specific implementation manners of the processor and various circuits.
  • a communication device which includes a logic circuit, the logic circuit is used to couple with an input/output interface, and transmit data through the input/output interface, so as to perform any of the above first to third aspects
  • a communication device which includes a logic circuit, the logic circuit is used to couple with an input/output interface, and transmit data through the input/output interface, so as to perform any of the above first to third aspects
  • a computer-readable storage medium stores a computer program (also referred to as code, or an instruction) which, when run on a computer, causes the computer to perform the above-mentioned first to Any aspect in the third aspect, and the method in any possible implementation manner in the first aspect to the third aspect.
  • a computer program also referred to as code, or an instruction
  • a computer program product includes: a computer program (also referred to as code, or an instruction), which, when the computer program is executed, causes the computer to perform the above-mentioned first to third aspects. Any one of the aspects, and the method in any possible implementation manner of the first aspect to the third aspect.
  • a communication system in a twelfth aspect, includes the above-mentioned access network device and a core network element.
  • FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of the present application.
  • Fig. 2 is a schematic diagram of a system architecture applicable to the present application.
  • FIG. 3 is a schematic diagram of another system architecture applicable to the present application.
  • Fig. 4 is a schematic flow chart of a network selection method provided by the present application.
  • Fig. 5 is a schematic diagram of an implementation flow of a selection network provided by the present application.
  • Fig. 6 is a schematic diagram of another implementation flow of a selection network provided by the present application.
  • Fig. 7 is a schematic diagram of another implementation flow of a selection network provided by the present application.
  • Fig. 8 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • Fig. 9 is a schematic block diagram of another communication device provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • Fig. 12 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • At least one (unit) means one (unit) or multiple (units)
  • at least two (units)” and “multiple (units)” mean two (units) or Two (a) or more.
  • At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items.
  • at least one item (piece) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple .
  • FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of the present application.
  • the network architecture may include user equipment 110, (wireless) access network equipment 120, user plane network element 130, data network 140, authentication server 150, mobility management network element 160, session management network element 170.
  • Each network element involved in the network architecture will be described respectively below.
  • User equipment (user equipment, UE) 110 user equipment can also be called terminal, access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user device.
  • the terminal in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal, an augmented reality (augmented reality, AR) terminal, an industrial Wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety Wireless terminals in smart cities, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop ( wireless local loop (WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, 5G network
  • wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories.
  • Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • (wireless) access network equipment (radio access network, (R)AN) 120 the access network equipment may also be referred to as access equipment, and the (R)AN can manage wireless resources and provide access services for user equipment.
  • the (R)AN can also be understood as a base station in the network.
  • the access network device in the embodiment of the present application may be any communication device with a wireless transceiver function for communicating with the user equipment.
  • the access network equipment includes but not limited to: evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), Node B (Node B, NB), base station controller (base station controller) , BSC), base transceiver station (base transceiver station, BTS), home base station (home evolved NodeB, HeNB, or home Node B, HNB), baseband unit (baseBand unit, BBU), wireless fidelity (wireless fidelity, WIFI)
  • the access point (access point, AP), wireless relay node, wireless backhaul node, transmission point (transmission point, TP) or transmission and reception point (transmission and reception point, TRP) in the system can also be 5G,
  • a gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include an active antenna unit (AAU).
  • the CU implements some functions of the gNB, and the DU implements some functions of the gNB.
  • the CU is responsible for processing non-real-time protocols and services, and realizing the functions of radio resource control (radio resource control, RRC) and packet data convergence protocol (packet data convergence protocol, PDCP) layer.
  • the DU is responsible for processing physical layer protocols and real-time services, realizing the functions of the radio link control (radio link control, RLC) layer, media access control (media access control, MAC) layer and physical (physical, PHY) layer.
  • the AAU implements some physical layer processing functions, radio frequency processing and related functions of active antennas.
  • the information of the RRC layer is generated by the CU, and will eventually be packaged into the PHY layer information by the PHY layer of the DU, or transformed from the information of the PHY layer. Therefore, under this architecture, high-level signaling such as RRC layer signaling can also be considered to be sent by the DU, or sent by the DU+AAU.
  • the access network device may be a device including one or more of a CU node, a DU node, and an AAU node.
  • the CU can be divided into access network devices in the access network (radio access network, RAN), and the CU can also be divided into access network devices in the core network (core network, CN). Do limited.
  • User plane network element 130 as an interface with the data network, it completes functions such as user plane data forwarding, session/flow-based charging statistics, and bandwidth limitation. That is, packet routing and forwarding, and quality of service (QoS) processing of user plane data.
  • QoS quality of service
  • the user plane network element may be a user plane function (user plane function, UPF) network element.
  • UPF user plane function
  • Data network 140 providing, for example, operator services, Internet access or third-party services, including servers, which implement video source encoding and rendering, etc.
  • the data network may be a data network (data network, DN).
  • Authentication server 150 execute security authentication of the user.
  • the authentication server may be an authentication server function (authentication server function, AUSF).
  • Mobility management network element 160 mainly used for mobility management and access management.
  • the access management network element may be an access and mobility management function (access and mobility management function, AMF), which mainly performs functions such as mobility management and access authentication/authorization. In addition, it is also responsible for transmitting user policies between terminals and policy control function (policy control function, PCF) network elements.
  • AMF access and mobility management function
  • PCF policy control function
  • Session management network element 170 mainly used for session management, Internet Protocol (IP) address allocation and management of user equipment, selection of manageable user plane functions, termination points of policy control and charging function interfaces, and downlink Data Notification etc.
  • IP Internet Protocol
  • the session management network element may be a session management function (session management function, SMF) network element, which completes terminal IP address allocation, UPF selection, and charging and QoS policy control.
  • SMF session management function
  • Application network element 180 In the 5G communication system, the application network element may be an application function (application function, AF) network element, which represents the application function of a third party or an operator, and is an interface for the 5G network to obtain external application data. It is mainly used to transfer the requirements of the application side to the network side.
  • application function application function, AF
  • AF application function
  • Unified data management network element 190 responsible for the management of user identification, subscription data, and authentication data, and the registration management of user service network elements.
  • the unified data management network element may be unified data management (unified data management, UDM).
  • Policy control network element 191 including user subscription data management function, policy control function, charging policy control function, quality of service (quality of service, QoS) control, etc., a unified policy framework for guiding network behavior, which is the control plane Functional network elements (such as AMF, SMF network elements, etc.) provide policy rule information and the like.
  • control plane Functional network elements such as AMF, SMF network elements, etc.
  • the policy control network element may be a PCF.
  • the function network element 192 of the network function storage library providing the storage function and the selection function of the network function entity information for other core network elements.
  • the network element may be a network function repository function (network function repository function, NRF).
  • Network open network element 193 In the 5G communication system, the network open network element may be a network open function (network element function, NEF) network element, which is mainly used to expose the services and capabilities of the 3GPP network function to the AF, and also AF may be made to provide information to 3GPP network functions.
  • NEF network element function
  • Network slice selection function network element 194 responsible for selecting a network slice for the UE.
  • the application network element may be a network slice selection function (network slice selection function, NSSF) network element.
  • NSSF network slice selection function
  • the above-mentioned functional network element can be a network element in a hardware device, or a software function running on dedicated hardware, or a virtualization function instantiated on a platform (for example, a cloud platform).
  • the above-mentioned functional network elements can be divided into one or more services, and further, there may also be services that exist independently of network functions.
  • an instance of the above-mentioned functional network element, or an instance of a service included in the above-mentioned functional network element, or a service instance existing independently of a network function may be referred to as a service instance.
  • the above-mentioned network elements or devices may still use their names in the 5G communication system, or may have other names, which are not limited in this embodiment of the present application.
  • the functions of the above-mentioned network elements or devices can be performed by an independent network element, or jointly performed by several network elements.
  • network elements in the core network can be deployed on the same or different physical devices.
  • the AMF and the SMF may be deployed on the same physical device.
  • the network elements of the 5G core network can be deployed on the same physical device as the network elements of the 4G core network. This embodiment of the present application does not limit it.
  • FIG. 1 is only an example, and does not constitute any limitation to the protection scope of the present application.
  • the communication method provided in the embodiment of the present application may also involve network elements not shown in FIG. 1 , and of course the communication method provided in the embodiment of the present application may only include some of the network elements shown in FIG. 1 .
  • the terminal is connected to the AMF through the N1 interface
  • the (R)AN is connected to the AMF through the N2 interface
  • the (R)AN is connected to the UPF through the N3 interface.
  • the UPFs are connected through the N9 interface, and the UPF is interconnected with the DN through the N6 interface.
  • the SMF controls the UPF through the N4 interface.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • GPRS general packet radio service
  • LTE LTE system
  • LTE advanced, LTE-A LTE frequency division duplex
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile telecommunications system
  • WiMAX global interconnection microwave access
  • 5G system or future Evolved communication system vehicle to other equipment
  • V2X can include vehicle to Internet (vehicle to network, V2N), vehicle to vehicle (vehicle to vehicle, V2V), vehicle to infrastructure (vehicle to infrastructure, V2I), vehicles to
  • Fig. 2 is a schematic diagram of a system architecture applicable to the present application.
  • FIG. 2 shows a roaming scenario of local offloading, that is, a terminal device accesses a service through a network of a visited location (visited domain).
  • VPLMN is the PLMN network of the visited domain
  • HPLMN is the PLMN network of the home domain
  • SEPP security edge protection proxy
  • VSEPP is the SEPP of the visited domain
  • HSEPP is the SEPP of the home domain.
  • the NE on the left side of the dotted line is the core network element of the control plane of the visited domain, and the NE on the right side of the dotted line is the core network element of the control plane of the home domain.
  • the network slice-specific authentication and authorization function network slice-specific authentication and authorization function, NSSAAF
  • the functions of other core network elements refer to the description in Figure 1, and will not be repeated here.
  • FIG. 3 is a schematic diagram of another system architecture applicable to the present application.
  • Figure 3 shows the roaming scenario of the home route, that is, the terminal device accesses the service through the home (home domain) network, where VPLMN is the PLMN network of the visited domain, HPLMN is the PLMN network of the home domain, and VSEPP is the SEPP of the visited domain , HSEPP is the SEPP of the home domain.
  • the network elements on the left of the dotted line are the control plane core network elements of the visited domain, and the network elements on the right side of the dotted line are the control plane core network elements of the home domain. Refer to the description in FIG. 1 for the specific functions of the network elements of the core network, and details are not described here.
  • terminal devices select network access through network identification and network broadcast information. For example, in SNPN, its cell broadcasts PLMN ID and network identifier (network identifier, NID). The identification information of the terminal device and the network identification information configured locally on the terminal device select the SNPN network that can be accessed. If the terminal device finds that the locally configured network identification information (such as PLMN ID and NID1) is different from the network broadcast identification (such as PLMN ID, or PLMN ID+NID2), the terminal device will not choose the network access.
  • the locally configured network identification information such as PLMN ID and NID1
  • the network broadcast identification such as PLMN ID, or PLMN ID+NID2
  • the cell broadcasts the PLMN ID and one or more CAG IDs, and the terminal device selects the PNI-NPN network that can be accessed according to the identification information in the broadcast information and the network identification information locally configured by the terminal device. If the terminal device finds that the identifier broadcast by the network (such as CAG ID2) is not in the locally configured network identification information (such as the CAG ID list), the terminal device will not choose the network access.
  • the identifier broadcast by the network such as CAG ID2
  • the terminal device will not choose the network access.
  • the terminal device cannot identify the service information that the current network can support by receiving broadcast information from the network system. Only after the terminal device accesses the network and initiates a registration application to the network, can it identify service-related information that the network can support during the registration process, such as slice information that the network can support. Therefore, in the initial access phase of the terminal device (RRC connection establishment), the service information that the current network can support cannot be identified in advance, which will cause the terminal device with specific service subscription information to be unable to correctly identify and select the network that supports the specific service and initiate access.
  • RRC connection establishment the service information that the current network can support cannot be identified in advance, which will cause the terminal device with specific service subscription information to be unable to correctly identify and select the network that supports the specific service and initiate access.
  • the network supporting the specific service is selected and accessed by a large number of wrong terminal devices (terminal devices without specific service subscription information), it will lead to network access congestion, and increase the number of terminal devices with specific service subscription information The delay of accessing the correct service network (the service network capable of supporting the specific service).
  • FIG. 4 is a schematic flowchart of a network selection method provided by the present application.
  • the method 100 shown in FIG. 4 includes:
  • step S110 the terminal device acquires first information, where the first information includes service information supported by the network.
  • the service information supported by the network is used by the terminal device to select the network to reside on.
  • the first information includes service information supported by multiple networks, and the services supported by each network are different.
  • the information selects the network residency that supports the service desired by the terminal device.
  • the service information includes at least one of the following: service identifier, service category, or service provider.
  • the service information further includes at least one of the following: service access time, or service access location.
  • service access time or service access location is associated with at least one of service identifier, service category, or service provider.
  • the service access time is associated with at least one of the service identifier, service category, or service provider: the service access time is associated with the service identifier, or the service access time is associated with the service category, or the service The access time of the service is associated with the service provider, or the access time of the service is associated with both the service identifier and the service type, or the access time of the service is associated with both the service identifier and the service provider, or the access time of the service is associated with The service provider is associated with the service type, or the access time of the service is associated with the service identifier, service provider, and service type, which is not limited in this application.
  • the access location of the service is associated with at least one of the service identifier, service category, or service provider, which is similar to the understanding that the above-mentioned service access time is associated with at least one of the service identifier, service category, or service provider , which will not be described here.
  • the service information includes both the service identifier and the access time of the service, it means that the service corresponding to the service identifier has an access time requirement, that is, the service corresponding to the service identifier can be accessed at the access time, specifically
  • the access time is associated with at least one of service identifier, service category, or service provider. Assuming that the specific access time is associated with the service identifier, that is, a specific service identifier corresponds to a specific access time, or assuming that the specific access time is associated with a service type, that is, a specific service type corresponds to a specific access time, Or it is assumed that the specific access time is associated with the service provider, that is, a specific service provider corresponds to a specific access time.
  • the service information includes both the service identifier and the access location of the service, it means that the service corresponding to the service identifier has an access location requirement, that is, the service corresponding to the service identifier can be accessed at the access location.
  • the access location is associated with the service identifier, that is, a specific service identifier corresponds to a specific access location, or it is assumed that a specific access location is associated with a service type, that is, a specific service type corresponds to a specific access location, or it is assumed that A specific access location is associated with a service provider, that is, a specific service provider corresponds to a specific access location.
  • Step S120 the terminal device selects the first network to reside on according to the first service and the first information, and the first network supports the first service.
  • the service desired by the terminal device is the first service
  • the first information includes service information supported by the first network and service information supported by the second network.
  • the service information is a service identifier
  • the service identifier supported by the first network includes a service identifier corresponding to the first service
  • the terminal device selects the first network to camp on.
  • the service information is a service category identifier
  • the service category identifier supported by the first network includes the service category identifier corresponding to the first service
  • the terminal device selects the first network to camp on.
  • the service information is a service provider identifier
  • the service provider identifier supported by the first network includes the service provider identifier corresponding to the first service
  • the service desired by the terminal device is the first service
  • the first information includes service information supported by the first network and service information supported by the second network.
  • the service information is the service identifier and the access location of the service
  • the service identifier supported by the first network includes the service identifier corresponding to the first service and access location #1
  • the service identifier supported by the second network includes the service identifier corresponding to the first service and access location #2
  • the terminal device may select the first network to camp on.
  • the service desired by the terminal device is the first service
  • the first information includes service information supported by the first network and service information supported by the second network.
  • the service information is the service identifier and the access time of the service
  • the service identifier supported by the first network includes the service identifier corresponding to the first service and access time #1
  • the service identifier supported by the second network includes the service identifier corresponding to the first service and access time #2
  • the terminal device can select the first network to camp on at access time #1
  • the terminal device can select the second network to camp on at access time #2.
  • Step S130 the terminal device registers on the first network.
  • the terminal device selects a resident network (the first network) according to the first information, it initiates registration on the resident network, and the resident network can meet the network service requirements of the terminal device, that is, the terminal device registers in the resident network. After registration, the desired network service of the terminal device can be obtained through the resident network.
  • Method 100 describes the process of how to select the first network according to the first information after the terminal device obtains the first information.
  • the method for selecting a network provided by method 100 is used so that the terminal device can select the network to reside on based on the service information supported by the network. , and register in the selected resident network to further obtain the desired network services.
  • it is possible to reduce the time delay for the terminal device to access the correct network (the correct network can meet the network service requirements of the terminal device to the greatest extent), and prevent the terminal device from connecting to the wrong network (the wrong network cannot meet the network service requirements of the terminal device) causing congestion.
  • the network selection information is configured locally on the terminal device, for example, the identifier of the network that the terminal device can access, and the corresponding relationship between the service information supported by the network, and the terminal device can obtain the first information from the corresponding relationship.
  • a two-way correspondence table between the service identifiers that the terminal device can access and the identifiers of the networks that the terminal device can access as shown in Table 1:
  • service identifier (service identifier, SID) corresponding to business 1 is SID A
  • SID A can represent the logo of business 1, or can represent the type logo of business 1, or identify the supplier logo of business 1, this application does not do this limit.
  • the identifiers of the networks that can provide service 1 are PLMN A/B and SNPN A/B.
  • the specific meaning indicated by the network service (network service, NS) identifier NSA corresponding to service 1 may be a network service service, or a type of network service service, or a provider of a network service service.
  • service 1 may be the name of the service.
  • the access network device broadcasts the code 00001 corresponding to an application (such as a game) (the code 00001 is the service identifier), and the terminal device can know that the network supports access the application.
  • the service type can be voice service, video service, game service, teleconference service, etc.
  • the provider of the service may be a code corresponding to the name of the manufacturer, and the code identifies that the current network can support the service provided by the manufacturer.
  • the network service identifier in Table 1 can be regarded as a simpler network identifier than the PLMN ID or PLMN ID+CAG ID, and the network service identifier can correspond to a certain network.
  • the identification information of the network can be one or more of: SNPN ID, PLMN ID, PLMN ID+CAG ID, or NS ID.
  • SNPN ID When the CAG ID only appears in association with the PLMN ID, it can be used as a type of network identification, and it does not constitute a valid network identification if it appears alone.
  • the terminal device can use the priority of network access in Table 1 Select a network to reside and register, and the arrangement of the networks in Table 1 from left to right can represent the priority from high to low (for example, for service 1, the access priority of network SNPN A is higher than that of network SPNN B).
  • the following is an example of how the terminal device adds the service information supported by the corresponding network to the supported PLMN list and the SNPN list.
  • the PLMN list uses the network PLMN A as an example
  • the SNPN list uses the network SNPN A as an example.
  • PLMN A PLMN ID+CAG ID (optional)
  • Supported Service ID list (Supported Service ID list)
  • Supported service category ID list (Supported Service Category ID list)
  • Supported Service Provider ID list (Supported Service Provider ID list)
  • SNPN A SNPN ID
  • Supported Service ID list (Supported Service ID list)
  • Supported service category ID list (Supported Service Category ID list)
  • Supported Service Provider ID list (Supported Service Provider ID list)
  • At least one of the following lists may be added under the corresponding network: a list of supported service IDs, a list of supported service type IDs, and a list of supported service provider IDs.
  • the above three lists are added to the network PLMN A and SNPN A in the network list, and this application does not limit this.
  • the terminal device can Select the first network to reside and register, for example, the priority of network PLMN A is higher than that of network SNPNA (from top to bottom in the list can represent the priority from high to low).
  • the terminal device obtains the first information locally, and in step S120, the terminal device selects the first network to reside on according to the first information and the network identification information broadcast by the access network device. .
  • the terminal device selects a network that can provide the desired network services of the terminal device to reside and register, which can reduce the number of terminal devices accessing the correct network (the correct network can provide the terminal The delay of the network service expected by the device) to avoid network access congestion.
  • the terminal device obtains the first information locally.
  • the terminal device may also obtain the first information in the following manner.
  • the terminal device receives a broadcast message from the access network device, where the broadcast message includes the first information.
  • the terminal device before the terminal device initiates a registration request to the target network device (including the target access network device and the target core network element), the terminal device registers with the core network element or the access network device (terminal A network device to which the device has connected) requests the first information.
  • Method 3 is that the terminal device obtains the first information from a broadcast message sent by the access network device
  • method 4 is that the terminal device obtains the first information from a message fed back by a core network element or an access network device in response to a request from the terminal device.
  • FIG. 5 provides a schematic flowchart of a method for selecting a network.
  • the method 200 shown in FIG. 5 includes:
  • step S210 the network element of the core network sends first information to the access network device, where the first information is service information supported by the network where the network element of the core network and the access network device are located.
  • the access network device receives the first information.
  • the network element of the core network updates the first information according to the network management system or local configuration, and the first information is used for the terminal device to select a network to reside on.
  • the access network device when the communication link between the access network device and the core network is established, that is, the access network device sends an NG setup request (NG SETUP REQUEST) to the core network element (such as AMF) during the NG setup process , correspondingly, the network element of the core network sends an NG setup response message (NG SETUP RESPONSE) to the access network device, and the NG setup response message includes the above-mentioned first information.
  • NG setup request NG SETUP REQUEST
  • the core network element such as AMF
  • NG setup response message NG SETUP RESPONSE
  • the access network device receives the AMF configuration update (AMF CONFIGURATION UPDATE) message sent by the AMF, and the AMF configuration update message includes the above-mentioned first information.
  • AMF CONFIGURATION UPDATE AMF CONFIGURATION UPDATE
  • the first information may be embodied in one or more of the following ways:
  • the above-mentioned special restriction means that there is a time limit for the terminal device to access the service, and the above-mentioned time is the time for accessing the service.
  • the type of service A is service type 1
  • the providers providing service A include service providers A/B/C, who can access service A at time #1, and service B has no time access restrictions.
  • tracking area code is the access location limit for the terminal equipment to access the service. It should be understood that the geographical location of the terminal equipment belongs to a cell, and each cell has a corresponding TAC number , which means that only in the cell corresponding to the TAC in the special restriction, the network supports service A of service type 1.
  • the network service identifier NS ID that is, the first information is the NS ID.
  • the network service identifier is as described in Table 1.
  • the terminal device can determine the service information supported by the network corresponding to the NS ID through the NS ID.
  • method 200 also includes:
  • Step S211 the network element of the core network sends the second information to the access network device, the second information indicates that the network equipment supports the terminal equipment to access the network equipment based on the service information, or the second information indicates that the network equipment only supports the terminal equipment to access the network equipment based on the service information Network equipment, where the network equipment includes access network equipment and/or core network network elements.
  • the access network device receives the second information.
  • the access network device may send an NG setup request (NG SETUP REQUEST) to a core network element (such as AMF) during the NG setup process, and correspondingly, the core network element sends an NG setup request to the access network device.
  • NG SETUP REQUEST NG setup request
  • a response message NG SETUP RESPONSE
  • the NG setup response message includes the second information above.
  • the access network device receives an AMF configuration update (AMF CONFIGURATION UPDATE) message sent by the AMF, and the AMF configuration update message includes the second information above.
  • AMF CONFIGURATION UPDATE AMF CONFIGURATION UPDATE
  • first information and the second information in the above step S210 and step S211 may be carried in the same message, for example, the first information and the second information are carried in the NG establishment response message, or the first information and the second information are carried In the AMF configuration update message.
  • the above-mentioned first information and second information may also be carried in different messages.
  • steps S210 and S211 there is no limitation on the order of steps S210 and S211. It may be that step S210 is before step S211, or that step S211 is before step S210. .
  • the method 200 further includes:
  • Step S220 after receiving the first information and/or the second information, the access network device updates the first information and/or the second information on the access network device side.
  • the AMF notifies the access network device of the changed first information and/or second information, and the access network device updates the local first information and/or second information.
  • method 200 further includes:
  • Step S230 the access network device sends the first information to the terminal device, and correspondingly, the terminal device receives the first information.
  • step S230 is after step S220.
  • step S230 is as described above, and the embodiment of the first information that appears later may also refer to the foregoing description, and details are not repeated here.
  • method 200 also includes:
  • step S231 the access network device sends the second information to the terminal device, and correspondingly, the terminal device receives the second information.
  • the first information and/or the second information in the above steps S230 and S231 are carried in broadcast information, and the broadcast message may be a system information block 1 (system information block 1, SIB1).
  • SIB1 system information block 1
  • the target network refers to a network that the terminal device wants to access, or a network that can provide the terminal device with a first service, where the first service is the service that the terminal device wants to access.
  • first information and the second information in step S230 and step S231 above may be carried in the same message, for example, the first information and the second information are carried in SIB1.
  • the above-mentioned first information and second information may also be carried in different broadcast messages.
  • the order of steps S230 and S231 is not limited. It may be that step S230 is before step S231, or that step S231 is before step S230. Before.
  • Step S240 the terminal device selects the first network to camp on according to the first service and the first information (corresponding to step S120 in the method 100).
  • the terminal device selects the first network to reside on according to the first service, the first information and the second information, and the first network supports the first service (when the method 200 includes steps S211 and S231).
  • the network selection information locally configured by the terminal device includes the identification and priority of the network that the terminal device can access, and also includes the identification of the network that the terminal device can access, and the corresponding relationship with the service information supported by the network, then The terminal device may select the first network to reside on according to the first service, the network selection information and the network identifier broadcast by the access network device.
  • the network selection information locally configured by the terminal device includes the identification and priority of the network that the terminal device can access, but does not include the identification of the network that the terminal device can access, and the corresponding relationship with the service information supported by the network, then the terminal device The first network to reside on may be selected according to the first service, the network selection information, the network identifier broadcast by the access network device, and the first information and/or second information broadcast by the access network device.
  • step S120 For a specific method for the terminal device to select the first network to camp on according to the first service and the first information, reference may be made to the description in step S120, and details are not repeated here.
  • first network that the terminal device selects to reside on based on the first service, first information, and second information is as follows:
  • the first information includes service information supported by the first network and service information supported by the second network
  • the service information is a service identifier
  • the service identifier supported by the first network includes the first service
  • the corresponding service identifier, the service identifier supported by the second network also includes the service identifier corresponding to the first service
  • the first network supports terminal equipment access based on service information
  • the second network does not support terminal equipment access based on service information, then the terminal equipment Select the first network to reside on.
  • the terminal device only has the subscription information of the first service, both the first network and the second network support the first service, the first network only supports terminal device access based on service information, and the second network supports terminal device access based on service information, Then the terminal device selects the first network to camp on.
  • the method for selecting a network provided by the method 200 enables the terminal device to select network devices of different access types based on the first information in combination with the second information, so that the terminal device can access the desired network more accurately.
  • FIG. 6 provides a schematic flowchart of a method for selecting a network.
  • the method 300 shown in FIG. 6 includes:
  • Step S310 the terminal device sends a query request to the core network element, the query request is used to query the service information supported by the network where the core network element is located, and correspondingly, the core network element receives the query request.
  • the core network element is an AMF
  • the query request is carried in NAS signaling.
  • step S320 the network element of the core network sends first information to the terminal device in response to the query request.
  • the first information is service information supported by the network where the network element of the core network and the access network device are located.
  • the terminal device receives the first information.
  • the embodiment of the first information may refer to the description in step S210.
  • method 300 also includes:
  • Step S330 the network element of the core network sends second information to the terminal device in response to the above query request, the second information indicates that the network device supports the terminal device to access the network device based on service information, or the second information indicates that the network device only supports the terminal device based on
  • the service information is connected to network equipment, and the network equipment includes access network equipment and/or core network elements.
  • the terminal device receives the second information.
  • step S320 and step S330 may be carried in the same message or in different messages.
  • the order of step S320 and step S330 The order is not limited, and step S320 may be before step S330, or step S330 may be before step S320.
  • steps S310, S320, S330 are for the terminal device to request the first information and/or the second information from the network element of the core network.
  • the terminal device can also request the access network device through steps S310', S320', S330' The first information and/or the second information is requested.
  • Step S310' the terminal device sends a query request to the access network device, the query request is used to query the service information supported by the network where the access network device is located, and correspondingly, the access network device receives the query request.
  • the query request is carried in RRC signaling.
  • step S320' the access network device sends first information to the terminal device in response to the above query request, and the first information is service information supported by the network where the access network device is located.
  • the terminal device receives the first information.
  • the access network device sends second information to the terminal device in response to the query request, the second information indicates that the network device supports the terminal device to access the network device based on service information, or the second information indicates that the network device Only terminal devices are supported to access network devices based on service information, and network devices include access network devices and/or core network elements.
  • the terminal device receives the second information.
  • step S320' and step S330' may be carried in the same message or in different messages.
  • step S320' and the step The sequence of S330' is not limited, and it may be that step S320' is before step S330', or that step S330' is before step S320'.
  • the method 300 further includes:
  • Step S340 the terminal device selects the first network to reside on according to the first service, the first information and/or the second information.
  • the terminal device can obtain the correspondence between the identification of the network that the terminal device can access and the service information supported by the network according to the locally configured network selection information (corresponding to mode 1 and mode 2), and obtain the corresponding relationship from the access network device or the core
  • the second information requested by the network element, and the first service and the network identifier broadcast by the access network device select the first network to reside on.
  • the first network is a network that the terminal device can access, and the first network supports the first network. a business.
  • the terminal device selects the first network to reside on based on the first information and second information requested from the access network device or core network element, as well as the first service and the network identifier broadcast by the access network device,
  • the first network is a network that the terminal device can access, and the first network supports the first service.
  • the terminal device selects the first network according to the first service, the first information and/or the second information, reference may be made to the description of step S120 and step S240, which will not be repeated here.
  • the terminal device may query the service information supported by the current network (the network the terminal device has already accessed) through NAS signaling or RRC signaling. Subsequent terminal devices can select a network for camping and registration based on the obtained service information supported by multiple network devices and the network selection information configured by the terminal device to access the network based on the service information supported by the network.
  • the solution for selecting a network provided by method 300 can also enable the terminal device to select network devices of different access types based on the first information combined with the second information, so that the terminal device can more accurately access the desired network device that can support Network equipment for the first business. Moreover, compared with the solution (corresponding to the method 200) in which the access network device broadcasts the first information, the resource overhead of the air interface can be reduced.
  • FIG. 7 provides a schematic flowchart of a method for a terminal device to update network selection information.
  • the method 400 shown in FIG. 7 includes:
  • step S410 the UDM sends the subscription information of the terminal device to the AMF, the subscription information includes the network selection information of the terminal device, and correspondingly, the AMF receives the subscription information.
  • the UDM is a UDM in the home network of the terminal device, and the UDM stores subscription information of the terminal device, and the subscription information includes network selection information.
  • the network selection information includes the two-way correspondence between the service information that the terminal device can access and the identification of the network that the terminal device can access (as shown in Table 1), or the network selection information includes the network list of the terminal device (in the network list Include the service information supported by each network, for details, refer to the description in mode 2 in method 100).
  • UDM can be replaced by a unified data repository (unified data repository, UDR) network element, and the UDR stores the subscription information of the terminal device, and the subscription information includes network selection information.
  • UDR unified data repository
  • the network selection information refer to Table 1 or method 100. as described in Method 2.
  • the AMF and the access network device can obtain the subscription information of the terminal device through the existing standard registration process (see the existing process in Section 4.2.2.2 of TS23.502).
  • AMF sends user subscription information acquisition request/response (Nudm_SDM_Get Request/Response) to UDM/UDR, and UDM/UDR sends subscription information including network selection information to AMF in response to the request/response.
  • Nudm_SDM_Get Request/Response user subscription information acquisition request/response
  • UDM/UDR sends subscription information including network selection information to AMF in response to the request/response.
  • step S420 the AMF sends the network selection information to the terminal device, and correspondingly, the terminal device receives the network selection information.
  • the network selection information is carried in registration accept (Registration Accept) information.
  • the network selection information may be forwarded by the access network device, or the AMF may directly send the network selection information to the terminal device without forwarding by the access network device .
  • Step S430 after receiving the network selection information, the terminal device updates the local network selection information of the terminal device.
  • the terminal device configures network selection information locally (such as Table 1 or a network list including service information), but the service information supported by the network will change, At this time, the terminal device may update the local Table 1 or the network list according to the network selection information received in step S430.
  • network selection information such as Table 1 or a network list including service information
  • the terminal device may select the first network to reside on according to the updated Table 1 or the network list, the first service and the network identifier broadcast by the access network device, or the terminal device may select the first network to reside on according to the updated Table 1 or the network list, the first service A service, the network identifier broadcast by the access network device, the first information and/or the second information to select the first network to reside on.
  • the terminal device can update the service information supported by the network in time, so that the subsequent terminal device can more accurately select a network that can provide the network service expected by the terminal device for camping. Stay and register.
  • the terminal device may also locally configure the second information (the second information in methods 200 and 300), for example, adding the item of network access based on service information to Table 1 in Mode 1, that is, Table 1 It includes the ability of the network to access based on service information, the identification of the network, and the corresponding relationship between the service information supported by the network.
  • the second category is that the network supports terminal equipment access based on service information.
  • the second category is that the network only supports terminal equipment access based on service information.
  • the third category is that the network does not support Terminal equipment accesses based on service information.
  • the terminal device can obtain the second information locally, that is, obtain from Table 1 whether the network that the terminal device can access supports access based on service information.
  • the terminal device may also configure the second information locally in other ways, which is not limited in this application.
  • the network selection information configured locally on the terminal device includes the corresponding relationship between the network identifier and the service information supported by the network, or the network selection information includes a network list, and the network list includes each network. supporting business information;
  • the rule for the terminal device to select a network to reside on may be an automatic network selection rule or a manual network selection rule.
  • the automatic network selection rules can be in any of the following ways:
  • the terminal device selects a network that only supports the first service access: the terminal device selects the network that only supports the first service access according to Table 1 or the network list including service information (see the description in method 100 for details).
  • the network indication form can be (PLMN ID+CAG ID, or SNPN ID, or NS ID);
  • the terminal device selects a network that broadcasts support for the first service access: the terminal device selects a network with a higher priority among the networks that support the first service access according to Table 1 or the network list that includes service information, and accesses the network that supports the first service access.
  • the indication form can be (PLMN ID+CAG ID, or SNPN ID, or NS ID);
  • the terminal device selects a network that does not broadcast support for the first service access: the terminal device selects a network according to the currently stored common network list (the network list does not include the service information supported by each network) and the priority of each network in the network list.
  • the network indication form can be (PLMN ID+CAG ID, or SNPN ID).
  • the terminal device selects only supported the first network accessed by the first service.
  • the terminal device selects the resident support for the first service according to the first service, the first information, the second information (optional), and the broadcast message of the network (the network identifier, or also includes the first information and/or the second information). into the first network; or
  • the terminal device selects the resident non-broadcast supporting first The first network for business access.
  • the first service is a specific service that the terminal device wants to access, and the broadcast only supports the network for the first service access, that is, the network can only provide the first service service, and the broadcast supports the first service access
  • the network that is, the network can provide other business services in addition to the first business service, and the network that does not broadcast support for the first business access, that is, the terminal device cannot know what business services the network supports in the broadcast message , whether the network can access the first service can only be determined after accessing the network.
  • the broadcast message of the above network can also be understood as the broadcast message of the access network device, or as the broadcast message of the network where the access network device is located. This application does not limit this, and it can optionally indicate that the second information is not necessary.
  • the above rules 1), 2), and 3) are the presentation order of the network selection in the manual mode.
  • the terminal device can select the first network with higher priority for network access through manual or automatic network selection mode, for example, the priority of the network that only supports the first service access is higher than that of the first There are multiple networks for service access and networks that do not broadcast support for the first service access, and only support the first service access. Among them, the first network has the highest priority, so the resident network selected by the terminal device is the second. a network.
  • the following describes how a terminal device accesses a network based on service information.
  • the terminal device does not carry target service information (the network service that the terminal device wants to access) in the registration request message, and the network device does not use the target service information to authenticate the terminal device.
  • the terminal device can register in the network where the network device is located, but cannot access the target service through the network.
  • the terminal device carries the target service information in the registration request message. After the network device authenticates the terminal device using the target service information, if the target service information carried in the registration request message is found to be the network If the service supported by the network where the device is located, the terminal device can register with the network where the network device is located, and can access the target service through the network. After the network device authenticates the terminal device using the target service information, if it finds that the target service information carried in the registration request message is not a service supported by the network where the network device is located, the network device can reject the registration request, and the subsequent terminal device can Supported service information, select a network that supports the target service and re-initiate the registration and access process.
  • execution subject shown in Figure 4-7 is only an example, and the execution subject may also be a chip, a chip system, or a processor that supports the execution subject to implement the method shown in Figure 4-7. No limit.
  • the methods and operations implemented by the terminal equipment may also be implemented by components (such as chips or circuits) that can be used for the terminal equipment
  • the methods and operations implemented by the access network equipment may also be implemented by It may be implemented by components (such as chips or circuits) that can be used in access network equipment.
  • each network element such as a transmitting end device or a receiving end device, includes a corresponding hardware structure and/or software module for performing each function in order to realize the above functions.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.
  • the embodiment of the present application can divide the functional modules of the transmitting end device or the receiving end device according to the above method example, for example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module middle.
  • the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. It should be noted that the division of modules in the embodiment of the present application is schematic, and is only a logical function division, and there may be other division methods in actual implementation. In the following, description will be made by taking the division of each functional module corresponding to each function as an example.
  • Fig. 8 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • the communication device 500 shown in FIG. 8 can be used to execute the actions performed by the terminal device in the above method embodiment (method 100 , 200 , 300 , or 400 ), and the communication device 500 includes a transceiver unit 510 and a processing unit 520 .
  • the transceiver unit 510 can communicate with the outside, and the processing unit 520 is used for data processing.
  • the transceiver unit 510 may also be called a communication interface or a communication unit.
  • the communication device 500 may further include a storage unit, which may be used to store instructions and/or data, and the processing unit 520 may read instructions or and/or data in the storage unit.
  • a storage unit which may be used to store instructions and/or data
  • the processing unit 520 may read instructions or and/or data in the storage unit.
  • the communication device 500 may be a terminal device
  • the transceiver unit 510 is used to perform operations related to receiving or sending of the terminal device in the above method embodiments
  • the processing unit 520 is used to perform operations related to the terminal device in the above method embodiments Device handling related operations.
  • the communications apparatus 500 may be a device including a terminal device.
  • the communication apparatus 500 may be a component configured in a terminal device, for example, a chip in the terminal device.
  • the transceiver unit 510 may be an interface circuit, a pin, and the like.
  • the interface circuit may include an input circuit and an output circuit
  • the processing unit 520 may include a processing circuit.
  • the processing unit 520 is configured to obtain first information, where the first information includes service information supported by the network, and select a first network to reside on according to the first service and the first information, and the first network Support the first service and register on the first network.
  • the service information includes at least one of the following: service identifier, service category, or service provider.
  • the service information further includes at least one of the following: service access time or service access location, wherein the service access time or service access location and the service identifier, the Business type, or at least one association among the service providers.
  • the processing unit 520 is further configured to configure a correspondence between identifiers of accessible networks and service information supported by the network, and obtain the first information.
  • the transceiver unit 510 is configured to receive a broadcast message from an access network device, where the broadcast message includes the first information; or, the transceiver unit 510 is configured to receive user subscription information from a core network element, the The user subscription information includes first information.
  • the transceiving unit 510 before acquiring the first information, sends a query request to an access network device or a core network element, where the query request is used to query the first information.
  • the transceiver unit 510 is further configured to receive second information from the network device, the second information indicating that the network device supports terminal devices accessing the network device based on service information, or the second information indicating that the network device only The terminal device is supported to access the network device based on the service information, the network device includes the access network device and/or the core network element, and the processing unit 520 is also used to select the resident first service according to the first service, the first information and the second information. a network.
  • the processing unit 520 is configured to select a resident first network that only supports access to the first service according to the first service, the first information, the second information, and network broadcast messages; A service, first information, second information, and network broadcast messages select the resident first network that supports the first service access; or according to the first service, first information, second information, and network broadcast messages A first network that does not broadcast and supports access to the first service that resides is selected.
  • Fig. 9 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • the communication device 600 shown in FIG. 9 can be used to execute the actions performed by the access network device or the core network element in the above method embodiment (method 200, 300, or 400), and the communication device 600 includes a transceiver unit 610 and processing unit 620 .
  • the transceiver unit 610 can communicate with the outside, and the processing unit 620 is used for data processing.
  • the transceiver unit 610 may also be called a communication interface or a communication unit.
  • the communication device 600 may further include a storage unit, which may be used to store instructions and/or data, and the processing unit 620 may read instructions or and/or data in the storage unit.
  • a storage unit which may be used to store instructions and/or data
  • the processing unit 620 may read instructions or and/or data in the storage unit.
  • the communication device 600 may be an access network device, the transceiver unit 610 is used to perform the receiving or sending operation of the access network device in the method embodiment above, and the processing unit 620 is used to perform the implementation of the above method In the example, the internal processing operations of the access network equipment are described.
  • the communications apparatus 600 may be a device including an access network device.
  • the communications apparatus 600 may be a component configured in an access network device, for example, a chip in the access network device.
  • the transceiver unit 610 may be an interface circuit, a pin, and the like.
  • the interface circuit may include an input circuit and an output circuit
  • the processing unit 620 may include a processing circuit.
  • the transceiver unit 610 is configured to receive first information from a network element of the core network, where the first information includes service information supported by the network, and the transceiver unit 610 is also configured to send the first information to the terminal device, The first information is used for the terminal device to select a network to camp on.
  • the service information includes at least one of the following: service identifier, service category, or service provider.
  • the service information further includes at least one of the following: service access time, or service access location, wherein, the service access time or service access location and the service identifier, The service category, or at least one association among the service providers.
  • the first information is carried in a broadcast message.
  • the processing unit 620 is configured to update the service information supported by the network according to the first information.
  • the transceiving unit 610 is further configured to send second information to the terminal device, the second information indicating that the network device supports the terminal device to access the network device based on service information, or the second information indicating that the network device Only the terminal device is supported to access the network device based on service information, and the network device includes the access network device and/or the core network element.
  • the communication device 600 may be a core network element (such as an AMF), the transceiver unit 610 is used to perform the receiving or sending operation of the core network element in the method embodiment above, and the processing unit 620 is used to Execute the internal processing operations of the network element of the core network in the method embodiment above.
  • a core network element such as an AMF
  • the transceiver unit 610 is used to perform the receiving or sending operation of the core network element in the method embodiment above
  • the processing unit 620 is used to Execute the internal processing operations of the network element of the core network in the method embodiment above.
  • the processing unit 620 is configured to update the first information according to the network management system or local configuration, the first information includes service information supported by the network, and the first information is used for the terminal device to select a network to reside on.
  • the transceiving unit 610 is configured to send the first information to the terminal device or the access network device.
  • the service information includes at least one of the following: service identifier, service category, or service provider.
  • the service information further includes at least one of the following: service access time, or service access location, wherein, the service access time or service access location and the service identifier, The service category, or at least one association among the service providers.
  • the transceiving unit 610 is further configured to receive a query request, where the query request is used to query the first information.
  • the transceiver unit 610 is further configured to send second information, the second information indicating that the network device supports terminal devices accessing the network device based on service information, or the second information indicating that the network device only supports terminal
  • the device accesses the network device based on service information, and the network device includes an access network device and/or a network element of the core network.
  • the embodiment of the present application further provides a communication device 700 .
  • the communication device 700 includes a processor 710, the processor 710 is coupled with a memory 720, the memory 720 is used to store computer programs or instructions and/or data, and the processor 710 is used to execute the computer programs or instructions and/or data stored in the memory 720 , so that the methods in the above method embodiments are executed.
  • the communication device 700 includes one or more processors 710 .
  • the communication device 700 may further include a memory 720 .
  • the communication device 700 may include one or more memories 720 .
  • the memory 720 may be integrated with the processor 710, or set separately.
  • the communication device 700 may further include a transceiver 730 and/or a communication interface, and the transceiver 730 and/or the communication interface are used for receiving and/or sending signals.
  • the processor 710 is configured to control the transceiver 730 and/or the communication interface to receive and/or send signals.
  • the communication apparatus 700 is used to implement the operations performed by the terminal device in the above method embodiments.
  • the processor 710 is configured to implement the operations performed internally by the terminal device in the above method embodiments
  • the transceiver 730 is configured to implement the receiving or sending operations performed by the terminal device in the above method embodiments.
  • the processing unit 520 in the apparatus 500 may be the processor in FIG. 10
  • the transceiver unit 510 may be the transceiver in FIG. 10 .
  • the embodiment of the present application further provides a communication device 800 .
  • the communication device 800 includes a processor 810, the processor 810 is coupled with a memory 820, the memory 820 is used to store computer programs or instructions and/or data, and the processor 810 is used to execute the computer programs or instructions and/or data stored in the memory 820 , so that the methods in the above method embodiments are executed.
  • the communication device 800 includes one or more processors 810 .
  • the communication device 800 may further include a memory 820 .
  • the communication device 800 may include one or more memories 820 .
  • the memory 820 may be integrated with the processor 810, or set separately.
  • the communication device 800 may further include a transceiver 830 and/or a communication interface, and the transceiver 830 and/or the communication interface are used for receiving and/or sending signals.
  • the processor 810 is configured to control the transceiver 830 to receive and/or send signals.
  • the communications apparatus 800 is configured to implement the operations performed by the access network device in the above method embodiments.
  • the processor 810 is configured to implement the operations performed internally by the access network device in the above method embodiments
  • the transceiver 830 is configured to implement the receiving or sending operations performed by the access network device in the above method embodiments.
  • the processing unit 620 in the apparatus 600 may be the processor in FIG. 11
  • the transceiver unit 610 may be the transceiver and/or the communication interface in FIG. 11 .
  • An embodiment of the present application also provides a communication device, including a processor, the processor is coupled to an input/output interface, and data is transmitted through the input/output interface, and the processor is configured to execute the method in any one of the above method embodiments.
  • the communication device 800 is used to implement the operations performed by a core network element (such as an AMF) in the above method embodiments.
  • a core network element such as an AMF
  • the processor 810 is used to implement the operations performed internally by the network elements of the core network in the above method embodiments
  • the transceiver 830 is used to implement the receiving or sending operations performed by the network elements of the core network in the above method embodiments.
  • the processing unit 620 in the apparatus 600 may be the processor in FIG. 11
  • the transceiver unit 610 may be the transceiver and/or the communication interface in FIG. 11 .
  • An embodiment of the present application also provides a communication device, including a processor, the processor is coupled to an input/output interface, and data is transmitted through the input/output interface, and the processor is configured to execute the method in any one of the above method embodiments.
  • the embodiment of the present application also provides a communication device 900 .
  • the communication device 900 includes a logic circuit 910 and an input/output interface (input/output interface) 920 .
  • the logic circuit 910 may be a processing circuit in the communication device 900 .
  • the logic circuit 910 may be coupled to the storage unit, and invoke instructions in the storage unit, so that the communication device 900 can implement the methods and functions of the various embodiments of the present application.
  • the input/output interface 920 may be an input/output circuit in the communication device 900, which outputs information processed by the communication device 900, or inputs data or signaling information to be processed into the communication device 900 for processing.
  • the communication apparatus 900 is configured to implement the operations performed by the terminal device in the above method embodiments.
  • the logic circuit 910 is used to implement the processing-related operations performed by the terminal device in the above method embodiments, for example, the processing-related operations performed by the terminal device in the embodiments shown in FIGS. 5-7 , the input/output interface 920 It is used to implement the sending and/or receiving related operations performed by the terminal device in the above method embodiments, for example, the sending and/or receiving related operations performed by the terminal device in the embodiments shown in FIGS. 5-7 .
  • the operations performed by the logic circuit 910 refer to the above description of the processing unit 520
  • the operations performed by the input/output interface 920 refer to the above description for the transceiver unit 510 , which will not be repeated here.
  • the communications apparatus 900 is configured to implement the operations performed by the access network device in the foregoing method embodiments.
  • the logic circuit 910 is used to implement the processing-related operations performed by the access network device in the above method embodiments, for example, the processing-related operations performed by the access network device in the embodiments shown in FIGS. 5-7 , input
  • the /output interface 920 is used to implement the sending and/or receiving related operations performed by the access network device in the above method embodiments, for example, the sending and/or receiving operations performed by the access network device in the embodiments shown in FIGS. 5-7 or receive related actions.
  • the operations performed by the logic circuit 910 refer to the above description of the processing unit 620
  • the operations performed by the input/output interface 920 refer to the above description for the transceiver unit 610 , which will not be repeated here.
  • the communication device 900 is configured to implement the operations performed by the network elements of the core network in the foregoing method embodiments.
  • the logic circuit 910 is used to implement the processing-related operations performed by the core network elements (such as AMF) in the above method embodiments, such as the processing-related operations performed by the core network elements in the embodiments shown in FIGS. 5-7
  • the input/output interface 920 is used to implement the sending and/or receiving related operations performed by the network element of the core network in the above method embodiment, for example, the network element of the core network in the embodiment shown in FIGS. 5-7 performs Send and/or receive related operations.
  • the operations performed by the logic circuit 910 refer to the above description of the processing unit 620
  • the operations performed by the input/output interface 920 refer to the above description for the transceiver unit 610 , which will not be repeated here.
  • the above communication device may be one or more chips.
  • the communication device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated circuit (ASIC), or a system chip (system on chip, SoC). It can be a central processor unit (CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), or a microcontroller (micro controller unit) , MCU), can also be a programmable controller (programmable logic device, PLD) or other integrated chips.
  • CPU central processor unit
  • NP network processor
  • DSP digital signal processor
  • microcontroller micro controller unit
  • PLD programmable logic device
  • each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software.
  • the steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
  • the software module can 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 electrically 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. To avoid repetition, no detailed description is given here.
  • the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components .
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate array
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the steps of the method disclosed in connection with the embodiments of the present application may 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 can 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 electrically 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 memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • the 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), electrically programmable Erases programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (RAM), which acts as external cache memory.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM direct memory bus random access memory
  • direct rambus RAM direct rambus RAM
  • the present application also provides a computer-readable medium, the computer-readable medium stores program code, and when the program code is run on the computer, the computer is made to execute the program shown in Figure 4-7.
  • Example method when the computer program is executed by a computer, the computer can implement the method executed by the access network device, or the method executed by the terminal device, or the method executed by the core network element (such as AMF) in the above method embodiment .
  • the embodiment of the present application also provides a computer program product containing instructions.
  • the computer implements the method executed by the access network device in the above method embodiment, or the method executed by the terminal device, or the method executed by the core A method executed by a network element (such as an AMF).
  • a network element such as an AMF
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server, or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media.
  • the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk (solid state disc, SSD)) etc.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a high-density digital video disc (digital video disc, DVD)
  • a semiconductor medium for example, a solid state disk (solid state disc, SSD)
  • the access network equipment, terminal equipment and core network network elements in the above-mentioned various device embodiments correspond to the access network equipment, terminal equipment and core network network elements in the method embodiments, and corresponding steps are performed by corresponding modules or units,
  • the communication unit transmits the steps of receiving or sending in the method embodiments, and other steps except sending and receiving may be performed by the processing unit (processor).
  • the processing unit performs the functions of the specific units, reference may be made to the corresponding method embodiments.
  • a component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer.
  • an application running on a computing device and the computing device can be components.
  • One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between two or more computers.
  • these components can execute from various computer readable media having various data structures stored thereon.
  • a component may, for example, be based on a signal having one or more packets of data (e.g., data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet via a signal interacting with other systems). Communicate through local and/or remote processes.
  • packets of data e.g., data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet via a signal interacting with other systems.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution 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 are used 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 methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

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Abstract

La présente demande concerne un procédé et un appareil permettant de sélectionner un réseau. Le procédé comprend les étapes suivantes : un dispositif terminal acquiert des premières informations, les premières informations comprenant des informations de service prises en charge par un réseau ; le dispositif terminal sélectionne, en fonction d'un premier service et des premières informations, un premier réseau où résider, le premier réseau prenant en charge le premier service ; et le dispositif terminal s'enregistre dans le premier réseau, puis acquiert un service de réseau souhaité au moyen du premier réseau. Au moyen du procédé et de l'appareil de sélection d'un réseau fournis dans la présente demande, le délai d'accès d'un dispositif terminal à un réseau peut être réduit, ce qui permet d'éviter la congestion de l'accès au réseau.
PCT/CN2022/127047 2021-12-30 2022-10-24 Procédé et appareil de sélection de réseau WO2023124457A1 (fr)

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CN202111668558.3A CN116390203A (zh) 2021-12-30 2021-12-30 选择网络的方法和装置
CN202111668558.3 2021-12-30

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WO2023124457A1 true WO2023124457A1 (fr) 2023-07-06

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