WO2024051546A1 - Procédé et appareil de sélection de réseau, et terminal - Google Patents

Procédé et appareil de sélection de réseau, et terminal Download PDF

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Publication number
WO2024051546A1
WO2024051546A1 PCT/CN2023/115668 CN2023115668W WO2024051546A1 WO 2024051546 A1 WO2024051546 A1 WO 2024051546A1 CN 2023115668 W CN2023115668 W CN 2023115668W WO 2024051546 A1 WO2024051546 A1 WO 2024051546A1
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WIPO (PCT)
Prior art keywords
network
target
underlay
overlay
terminal
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PCT/CN2023/115668
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English (en)
Chinese (zh)
Inventor
张鹏飞
王慧
康艳超
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维沃移动通信有限公司
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Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Publication of WO2024051546A1 publication Critical patent/WO2024051546A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • 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

Definitions

  • This application belongs to the field of communication technology, and specifically relates to a network selection method, device, and terminal.
  • the underlay network which can be a Public Land Mobile Network (PLMN)
  • PLMN Public Land Mobile Network
  • SNPN independent non-public network
  • the terminal can only access the overlay network through certain underlay networks. Then, how to select a network in this scenario is a problem that needs to be solved.
  • Embodiments of the present application provide a network selection method, device, and terminal, which enable the terminal to select and access the target underlay network, and then access the target overlay network.
  • the first aspect provides a network selection method, including:
  • the terminal selects a target underlay network based on the stored first indication information and one or more target overlay networks.
  • the target overlay network provides target services for the terminal, and the target underlay network establishes a data connection for accessing the target overlay network.
  • the first indication information includes at least one of the following:
  • the first information indicates the underlay network list corresponding to each overlay network
  • the second information indicates the overlay network list corresponding to each underlay network
  • the third information indicates the mapping relationship between the underlay network list and the overlay network list.
  • the underlay network list includes at least one underlay network, and the overlay network list includes at least one overlay network;
  • the fourth information indicates the network selection mode of the terminal.
  • a network selection device including:
  • a processing module configured to select a target underlay network based on the stored first indication information and one or more target overlay networks.
  • the target overlay network provides target services for the terminal, and the target underlay network is for accessing the target overlay.
  • the first indication information includes at least one of the following:
  • the first information indicates the underlay network list corresponding to each overlay network
  • the second information indicates the overlay network list corresponding to each underlay network
  • the third information indicates the mapping relationship between the underlay network list and the overlay network list.
  • the underlay network list includes at least one underlay network, and the overlay network list includes at least one overlay network;
  • the fourth information indicates the network selection mode of the terminal.
  • a terminal in a third aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor, the following implementations are implemented: The steps of the method described in one aspect.
  • a terminal including a processor and a communication interface, wherein the processor is configured to select a target underlay network according to the stored first indication information and one or more target overlay networks, and the target overlay network is The terminal provides a target service, and the target underlay network is a network that accesses the target overlay network to establish a data connection; wherein the first indication information includes at least one of the following: first information, indicating a connection with each overlay network The corresponding underlay network list; the second information indicates the overlay network list corresponding to each underlay network; the third information indicates the mapping relationship between the underlay network list and the overlay network list, and the underlay network list includes at least one underlay network, so The overlay network list includes at least one overlay network; fourth information indicates the network selection mode of the terminal.
  • a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented.
  • a chip in a sixth aspect, includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the method described in the first aspect. .
  • a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the method described in the first aspect. Steps for choosing a network method.
  • the terminal stores first indication information.
  • the first indication information indicates the correspondence between the overlay network and the underlay network or the network selection mode of the terminal.
  • the terminal can select an access target based on the first indication information.
  • the target underlay network of the overlay network, or the terminal's network reselection process is triggered based on the first instruction information to select a target underlay network that can access the target overlay network, thereby achieving access to the target overlay network through the target underlay network.
  • Figure 1 is a block diagram of a wireless communication system applicable to the embodiment of the present application.
  • Figure 2 is a schematic diagram of a terminal accessing the overlay network through the underlay network
  • Figures 3-5 are schematic flow charts of the network selection method according to the embodiment of the present application.
  • Figure 6 is a schematic structural diagram of a network selection device according to an embodiment of the present application.
  • Figure 7 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • Figure 8 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • first, second, etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and “second” are distinguished objects It is usually one type, and the number of objects is not limited.
  • the first object can be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the related objects are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • system and “network” in the embodiments of this application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies.
  • NR New Radio
  • the following description describes a New Radio (NR) system for example purposes, and uses NR terminology in much of the following description, but these techniques can also be applied to applications other than NR system applications, such as 6th Generation , 6G) communication system.
  • NR New Radio
  • FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable.
  • the wireless communication system includes a terminal 11 and a network side device 12.
  • the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, or a super mobile personal computer.
  • Tablet Personal Computer Tablet Personal Computer
  • laptop computer laptop computer
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • UMPC ultra-mobile personal computer
  • UMPC mobile Internet device
  • MID mobile Internet Device
  • AR augmented reality
  • VR virtual reality
  • robots wearable devices
  • WUE Vehicle User Equipment
  • PUE Pedestrian User Equipment
  • smart home home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.
  • game consoles personal computers (personal computer, PC), teller machine or self-service machine and other terminal-side devices.
  • Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets) bracelets, smart anklets, etc.), smart wristbands, smart clothing, etc.
  • the network side device 12 may include access network equipment or core network equipment, where the access network
  • the device may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network unit.
  • Access network equipment may include a base station, a Wireless Local Area Network (WLAN) access point or a Wireless Fidelity (WiFi) node, etc.
  • the base station may be called a Node B or an Evolved Node B.
  • the base station is not limited to specific technical terms. It needs to be explained that , in the embodiment of this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.
  • the terminal accesses the overlay network through the underlay network, as shown in Figure 2, including the following steps:
  • the UE registers with the PLMN through the Uu port of the PLMN (using the PLMN contract);
  • the UE When the UE wants to obtain services from the SNPN, the UE establishes a data connection to the non-3GPP Interworking Function (N3IWF) corresponding to the SNPN;
  • N3IWF non-3GPP Interworking Function
  • the UE sends a registration message to the SNPN core network (Core Network, CN) through the above data connection (using PLMN contract);
  • the terminal selects a network based on the PLMN priority list.
  • the embodiment of the present application provides a network selection method, as shown in Figure 3, including:
  • Step 101 The terminal selects a target underlay network based on the stored first indication information and one or more target overlay networks.
  • the target overlay network provides target services for the terminal, and the target underlay network is for accessing the target overlay network. Establish a network for data connections;
  • the first indication information includes at least one of the following:
  • the first information indicates the underlay network list corresponding to each overlay network
  • the second information indicates the overlay network list corresponding to each underlay network
  • the third information indicates the mapping relationship between the underlay network list and the overlay network list.
  • the underlay network list includes at least one underlay network, and the overlay network list includes at least one overlay network;
  • the fourth information indicates the network selection mode of the terminal.
  • the terminal stores first indication information.
  • the first indication information indicates the correspondence between the overlay network and the underlay network or the network selection mode of the terminal.
  • the terminal can select an access target based on the first indication information.
  • the target underlay network of the overlay network, or the terminal's network reselection process is triggered based on the first instruction information to select a target underlay network that can access the target overlay network, thereby achieving access to the target overlay network through the target underlay network.
  • the target service is the service that the terminal wants to obtain
  • the overlay network is the service that the terminal wants to obtain.
  • Standard network it can be understood that the overlay network is a network that provides target services.
  • the underlay network is a network that the terminal accesses through the Uu port and establishes a data connection for accessing the overlay network.
  • the overlay network can be PLMN or SNPN, and the underlay network can be PLMN or SNPN.
  • the PLMN When the UE uses the user plane established on the PLMN to access the SNPN service through NWu, the PLMN is an underlay network and SNPN is an overlay network. When the UE uses the user plane established on the SNPN to access the PLMN service through NWu, the PLMN is an underlay network and the SNPN is an overlay network.
  • the terminal can obtain the first indication information from the overlay network or the underlay network and store it, and can also pre-configure the first indication information in the terminal.
  • the first indication information can be located in at least one of the following of the terminal: Global User Identification Card (Universal Subscriber Identity Module, USIM); internal memory ME of the terminal; entry (entry) of SNPN subscription information.
  • the first indication information may include one or more first information.
  • the first indication information may include one or more underlay network lists.
  • the overlay network includes PLMN1 and PLMN2
  • the underlay network includes PLMN a, PLMN b, PLMN c, PLMN d,..., PLMN h.
  • the first indication information includes underlay network list 1 and underlay network list 2.
  • Underlay network list 1 indicates the underlay network list corresponding to PLMN1,
  • the underlay networks in the underlay network list 1 can access PLMN1.
  • the underlay networks in the underlay network list 1 are: PLMN a, PLMN b, PLMN c, PLMN d.
  • the ordering of the underlay networks in the underlay network list 1 can reflect the underlay
  • the priority of the network the underlay networks in underlay network list 1 can be arranged from high to low priority, or can be arranged from low to high priority
  • underlay network list 2 indicates the underlay network list corresponding to PLMN2
  • the underlay networks in the underlay network list 2 can access PLMN2.
  • the underlay networks in the underlay network list 2 are: PLMN e, PLMN f, PLMN g, PLMN h.
  • the ordering of the underlay networks in the underlay network list 2 can reflect the underlay network.
  • the priority of the network The underlay networks in underlay network list 2 can be arranged from high to low priority, or they can be arranged from low to high priority.
  • the first indication information may include one or more second information.
  • the first indication information may include one or more overlay network lists.
  • the underlay network includes PLMN3 and PLMN4
  • the overlay network includes PLMN i, PLMN j, PLMN k, PLMN l,..., PLMN p
  • the first indication information includes overlay network list 1 and overlay network list 2
  • overlay network list 1 is the overlay network list corresponding to PLMN3
  • PLMN3 can access the overlay networks in the overlay network list.
  • the overlay networks in the overlay network list 1 are: PLMN i, PLMN j, PLMN k, PLMN l.
  • the ordering of the overlay networks in the overlay network list 1 can reflect the access of PLMN3.
  • the priority of accessing the overlay network The overlay networks in the overlay network list 1 can be arranged from high to low priority, or they can be arranged from low to high priority.
  • PLMN3 preferentially accesses the overlay network with the highest priority.
  • Overlay network list 2 is the overlay network list corresponding to PLMN4.
  • PLMN4 can access the overlay network in the overlay network list.
  • the overlay networks in overlay network list 2 are: PLMN m, PLMN n, PLMN o, PLMN p, where,
  • the ordering of overlay networks in overlay network list 2 can reflect the priority of PLMN4 access to overlay networks. level, the overlay networks in overlay network list 2 can be arranged from high to low priority, or from low to high priority. PLMN4 preferentially accesses the overlay network with the highest priority.
  • the third information indicates the mapping relationship between the underlay network list and the overlay network list.
  • the underlay network list includes at least one underlay network.
  • the overlay network list includes at least one overlay network.
  • the overlay network and the underlay network are Taking PLMN as an example, the overlay network in the third information includes PLMN5, PLMN6 and PLMN7, and the underlay network includes PLMN q, PLMN r, PLMN s and PLMN t, then the third information indicates PLMN q, PLMN r, PLMN s, PLMN PLMN t can all access PLMN5, PLMN q, PLMN r, PLMN s, and PLMN t can all access PLMN6, and PLMN q, PLMN r, PLMN s, and PLMN t can all access PLMN7.
  • the network selection mode includes at least one of the following:
  • SNPN access mode indicating priority or only selecting SNPN as the target underlay network
  • Non-SNPN access mode indicating priority or only selecting PLMN as the target underlay network
  • the first access mode indicates selecting SNPN as the target underlay network or indicating selecting PLMN as the target underlay network.
  • the network selection mode of the terminal is SNPN access mode, SNPN is preferred or only selected as the target underlay network; if the network selection mode of the terminal is non-SNPN access mode, PLMN is preferred or only selected as the target underlay network; if The network selection mode of the terminal is the first access mode, and SNPN or PLMN is selected as the target underlay network.
  • the configuration granularity of the network selection mode can be for each network or each terminal. For example, the same network selection mode can be configured for terminals in each network, or the network selection mode can be configured individually for each terminal.
  • selecting the target underlay network includes:
  • the network selection conditions include at least one of the following:
  • the network currently registered by the terminal is in the underlay network list corresponding to the one or more target overlay networks;
  • the one or more target overlay networks are in the overlay network list corresponding to the network currently registered by the terminal;
  • the network currently registered by the terminal conforms to the network selection mode of the terminal.
  • the network currently registered by the terminal if the network currently registered by the terminal is in the underlay network list corresponding to the one or more target overlay networks, the network currently registered by the terminal can be used as the target.
  • the underlay network accesses the target overlay network through the currently registered network and obtains services; If the network currently registered by the terminal is not in the underlay network list corresponding to the target overlay network, the network currently registered by the terminal cannot be used as the target underlay network, and network reselection is performed.
  • the network currently registered by the terminal is in the underlay network list corresponding to the target overlay network, it can access the target overlay network through the current underlay network; when there are multiple target overlay networks If the network currently registered by the terminal is included in the underlay network list corresponding to multiple target overlay networks, it can access the target overlay network through the current underlay network. Otherwise, it cannot access the target overlay network through the current underlay network.
  • the underlay network accesses the target overlay network through the currently registered network and obtains services; if the target overlay network is not in the overlay network list corresponding to the network currently registered by the terminal, the network currently registered by the terminal cannot be used as the target. Underlay network, perform network reselection.
  • the first indication information includes the third information
  • the network currently registered by the terminal can be used as the target underlay network, Access the target overlay network through the currently registered network and obtain services; if there is no mapping relationship between the network currently registered by the terminal and the target overlay network, the network currently registered by the terminal cannot be used as the target underlay network, and network Reselect.
  • the first indication information includes the fourth information
  • the network currently registered by the terminal if the network currently registered by the terminal complies with the network selection mode of the terminal, the network currently registered by the terminal can be used as the target underlay network, through the currently registered network Access the target overlay network; if the network currently registered by the terminal does not comply with the terminal's network selection mode, the network currently registered by the terminal cannot be used as the target underlay network, and network reselection is performed.
  • the network selection mode of the terminal is SNPN access mode, and the network currently registered by the terminal is SNPN, then the network currently registered by the terminal can be used as the target underlay network, and the target overlay network can be accessed through the currently registered network; if The network selection mode is non-SNPN access mode, and the network currently registered by the terminal is SNPN. The network currently registered by the terminal cannot be used as the target underlay network, and network reselection is required.
  • the opportunity to reselect the target underlay network according to the first instruction information includes any of the following:
  • Trigger network reselection immediately and select the target underlay network can be performed immediately after judging that the network currently registered by the terminal cannot be used as the target underlay network. This allows the terminal to access the target underlay network as soon as possible and then access the target overlay network. ;
  • the first timer can be protocol-defined or pre-configured or network-side device configuration, so that terminal access can be controlled as needed.
  • network reselection is triggered and the target underlay network is selected. That is, when there is no high-priority service, the network reselection process is immediately initiated; if there is high-priority service, wait until the high-priority service is available. After the end of high-priority services, a network reselection process is initiated to ensure the normal operation of high-priority services and avoid interruption of high-priority services.
  • the high-priority services include at least one of the following:
  • IP Internet Protocol
  • MMTEL Multimedia telephony
  • SMS short message service
  • Non-access stratum NAS
  • SMS short message service
  • Short messages are transmitted through the IP multimedia subsystem (i.e. SMS over IP).
  • reselecting the target underlay network according to the first indication information includes:
  • the candidate underlay networks in the target underlay network set satisfy at least one of the following:
  • the target overlay network is in the overlay network list corresponding to the candidate underlay network
  • selecting the target underlay network from the target underlay network set includes at least one of the following:
  • the network selection method includes the following steps:
  • Step 0 The terminal stores the first indication information
  • Step 1 UE registers in underlay network 1;
  • Step 2 UE wants to register to overlay network 1;
  • Step 3 UE checks the first indication information
  • the first indication information includes the first information and underlay network 1 is in the underlay network list corresponding to overlay network 1, access overlay network 1 through underlay network 1 to register and obtain services, skipping steps 4 and 5; underlay network 1 is not in the list.
  • the underlay network list corresponding to overlay network 1 trigger the network reselection process and turn to step 4;
  • the first indication information includes the second information and overlay network 1 is in the overlay network list corresponding to underlay network 1, access overlay network 1 through underlay network 1 to register and obtain services, skipping steps 4 and 5; overlay network 1 is not in the list.
  • the overlay network list corresponding to underlay network 1 trigger the network reselection process and turn to step 4;
  • the first indication information includes the third information, there is a mapping relationship between overlay network 1 and underlay network 1, Then access overlay network 1 through underlay network 1 to register and obtain services, skip steps 4 and 5; there is no mapping relationship between overlay network 1 and underlay network 1, trigger the network reselection process, and go to step 4;
  • the first indication information includes the fourth information and the underlay network 1 conforms to the terminal's network selection mode, access the overlay network 1 through the underlay network 1 to register and obtain the service, skipping steps 4 and 5; the underlay network 1 does not conform to the terminal's selection mode.
  • Network mode trigger the network reselection process, and go to step 4;
  • Step 4 The terminal triggers the network reselection process
  • the terminal can trigger the network reselection process immediately; or trigger the network reselection process after the preset first timer expires; or determine whether to initiate the network reselection process based on whether there are high-priority services, that is, there is no high-priority service If there is a service, the network reselection process will be initiated immediately. If there is a high-priority service, the network reselection process will be initiated after the high-priority service ends.
  • the first indication information includes the first information and only underlay network 2 is in the underlay network list corresponding to overlay network 1, then underlay network 2 is selected as the target underlay network; if there are multiple underlay networks such as underlay network 2, underlay network 3, Underlay networks 4 are all in the underlay network list corresponding to overlay network 1. Then the underlay network 2 with the highest priority can be selected as the target underlay network according to the priority order of the underlay networks in the underlay network list, or an underlay network can be randomly selected. network as the target underlay network.
  • underlay network 2 is selected as the target underlay network; if overlay network 1 is included in multiple underlay networks at the same time, such as underlay network 2 , underlay network 3, and underlay network 4.
  • the underlay network 2 with the highest priority can be selected as the target underlay network according to the priority order of multiple underlay networks, or an underlay network can be randomly selected as the target underlay network.
  • the priority order of the underlay network can be preconfigured or configured by the network side device or defined by the protocol.
  • the first indication information includes the third information, and only underlay network 2 and overlay network 1 have a mapping relationship, then underlay network 2 is selected as the target underlay network; if there are multiple underlay networks such as underlay network 2, underlay network 3, and underlay network 4 all have a mapping relationship with overlay network 1, then the underlay network 2 with the highest priority can be selected as the target underlay network according to the priority order of multiple underlay networks, or an underlay network can be randomly selected as the target underlay network. .
  • the priority order of the underlay network can be preconfigured or configured by the network side device or defined by the protocol.
  • underlay network 2 is selected as the target underlay network. If there are multiple underlay networks, such as underlay network 2, underlay network 3, and underlay network 4, all of which conform to the network selection mode of the terminal, the underlay network 2 with the highest priority can be selected as the target according to the priority order of the multiple underlay networks. Underlay network, you can also randomly select an underlay network as the target underlay network.
  • the priority order of the underlay network can be preconfigured or configured by the network side device or defined by the protocol.
  • Step 5 UE registers in underlay network 2;
  • Step 6 UE registers in overlay network 1.
  • reselecting the target underlay network according to the first indication information includes:
  • For each target overlay network determine a set of candidate underlay networks corresponding to the target overlay network according to the first indication information
  • the candidate underlay networks in the candidate underlay network set satisfy at least one of the following:
  • the target overlay network is in the overlay network list corresponding to the candidate underlay network
  • selecting the target underlay network from the target underlay network set includes at least one of the following:
  • the network selection method includes the following steps:
  • Step 0 The terminal stores the first indication information
  • Step 1 UE registers in underlay network 1;
  • Step 2 The UE wants to register to overlay network 1 and overlay network 2;
  • Step 3 UE checks the first indication information
  • the candidate underlay network set corresponding to overlay network 1 is determined according to the first indication information. If the first indication information includes the first information, the candidate underlay network in the candidate underlay network set is located in the underlay network list corresponding to overlay network 1. in; if the first indication information includes the second information, overlay network 1 is located in the overlay network list corresponding to the candidate underlay network in the candidate underlay network set; if the first indication information includes the third information, overlay network 1 and the candidate underlay network set There is a mapping relationship among the candidate underlay networks in the set; if the first indication information includes the fourth information, the candidate underlay networks in the candidate underlay network set conform to the network selection mode of the terminal.
  • underlay network 1 If the currently registered network, namely underlay network 1, is in the target underlay network set, access overlay network 1 and overlay network 2 through underlay network 1 to register and obtain services, skip steps 4 and 5. If the currently registered network is the underlay network, 1 is not in the target underlay network set, triggers the network reselection process, and goes to step 4;
  • Step 4 The terminal triggers the network reselection process
  • underlay network 2 If there is only underlay network 2 in the target underlay network set, select underlay network 2 as the target underlay network; if there are multiple underlay networks in the target underlay network set, such as underlay network 2, underlay network 3, and underlay network 4, you can select According to the priority order of the underlay networks, the underlay network 2 with the highest priority is selected as the target underlay network, or an underlay network can be randomly selected as the target underlay network.
  • the priority order of the underlay network can be preconfigured or configured by the network side device or defined by the protocol.
  • Step 5 UE registers in underlay network 2;
  • Step 6a & Step 6b The UE registers in overlay network 1 and overlay network 2 respectively.
  • the execution subject may be a network selection device.
  • the network selection device performing the network selection method is taken as an example to illustrate the network selection device provided by the embodiment of the present application.
  • An embodiment of the present application provides a network selection device 200, as shown in Figure 6, including:
  • the processing module 210 is configured to select a target underlay network according to the stored first indication information and one or more target overlay networks.
  • the target overlay network provides target services for the terminal, and the target underlay network is for accessing the target.
  • Overlay network establishes a data connection network;
  • the first indication information includes at least one of the following:
  • the first information indicates the underlay network list corresponding to each overlay network
  • the second information indicates the overlay network list corresponding to each underlay network
  • the third information indicates the mapping relationship between the underlay network list and the overlay network list.
  • the underlay network list includes at least one underlay network, and the overlay network list includes at least one overlay network;
  • the fourth information indicates the network selection mode of the terminal.
  • the terminal stores first indication information.
  • the first indication information indicates the correspondence between the overlay network and the underlay network or the network selection mode of the terminal.
  • the terminal can select an access target based on the first indication information.
  • the target underlay network of the overlay network, or the terminal's network reselection process is triggered based on the first instruction information to select a target underlay network that can access the target overlay network, thereby achieving access to the target overlay network through the target underlay network.
  • the target service is the service that the terminal wants to obtain
  • the overlay network is the target network that the terminal wants to obtain the service
  • the underlay network is the network that the terminal accesses through the Uu port and establishes a data connection for accessing the overlay network. It can be PLMN or SNPN, and the underlay network can be PLMN or SNPN.
  • the terminal can obtain the first indication information from the overlay network or the underlay network and store it, and can also pre-configure the first indication information in the terminal.
  • the first indication information can be located in at least one of the following of the terminal: Global User Identification Card USIM; internal memory ME of the terminal; entry of SNPN subscription information.
  • the first indication information may include one or more first information.
  • the first indication information may include one or more underlay network lists.
  • the overlay network includes PLMN1 and PLMN2
  • the underlay network includes PLMN a, PLMN b, PLMN c, PLMN d,..., PLMN h.
  • the first indication information includes underlay network list 1 and underlay network list 2.
  • Underlay network list 1 indicates the underlay network list corresponding to PLMN1,
  • the underlay networks in the underlay network list 1 can access PLMN1.
  • the underlay networks in the underlay network list 1 are: PLMN a, PLMN b, PLMN c, PLMN d.
  • the ordering of the underlay networks in the underlay network list 1 can reflect the underlay
  • the priority of the network the underlay networks in underlay network list 1 can be arranged from high to low priority, or can be arranged from low to high priority
  • underlay network list 2 indicates the underlay network list corresponding to PLMN2
  • the underlay networks in the underlay network list 2 can access PLMN2.
  • the underlay networks in the underlay network list 2 are: PLMN e, PLMN f, PLMN g, PLMN h.
  • the ordering of the underlay networks in the underlay network list 2 can reflect the underlay network.
  • the priority of the network The underlay networks in underlay network list 2 can be arranged from high to low priority, or they can be arranged from low to high priority.
  • the first indication information may include one or more second information.
  • the first indication information may include one or more overlay network lists.
  • the underlay network includes PLMN3 and PLMN4, the overlay network includes PLMN i, PLMN j, PLMN k, PLMN l,..., PLMN p.
  • the first indication information includes overlay network list 1 and overlay network list 2.
  • Overlay network list 1 is the overlay network list corresponding to PLMN3.
  • PLMN3 can access the overlay networks in the overlay network list.
  • the overlay networks in the overlay network list 1 are: PLMN i, PLMN j, PLMN k, PLMN l.
  • the ordering of the overlay networks in the overlay network list 1 can reflect the access of PLMN3.
  • the priority of accessing the overlay network The overlay networks in the overlay network list 1 can be arranged from high to low priority, or they can be arranged from low to high priority.
  • PLMN3 preferentially accesses the overlay network with the highest priority.
  • Overlay network list 2 is the overlay network list corresponding to PLMN4.
  • PLMN4 can access the overlay network in the overlay network list.
  • the overlay networks in overlay network list 2 are: PLMN m, PLMN n, PLMN o, PLMN p, where,
  • the ordering of overlay networks in overlay network list 2 can reflect the priority of PLMN4 access to the overlay network.
  • the overlay networks in overlay network list 2 can be arranged from high to low priority, or from low to high priority. Arrange, PLMN4 preferentially accesses the overlay network with the highest priority.
  • the third information indicates the mapping relationship between the underlay network list and the overlay network list, the underlay network list includes at least one underlay network, and the overlay network list includes at least one overlay network,
  • the overlay network in the third information includes PLMN5, PLMN6 and PLMN7
  • the underlay network includes PLMN q, PLMN r, PLMN s and PLMN t
  • the third information Indicates that PLMN q, PLMN r, PLMN s, and PLMN t can all access PLMN5, PLMN q, PLMN r, PLMN s, and PLMN t can all access PLMN6, and PLMN q, PLMN r, PLMN s, and PLMN t can all access.
  • PLMN7 the third information
  • the network selection mode includes at least one of the following:
  • Non-SNPN access mode indicating priority or only selecting the public land mobile network PLMN as the target underlay network
  • the first access mode indicates selecting SNPN as the target underlay network or indicating selecting PLMN as the target underlay network.
  • the network selection mode of the terminal is SNPN access mode, SNPN is preferred or only selected as the target underlay network; if the network selection mode of the terminal is non-SNPN access mode, PLMN is preferred or only selected as the target underlay network; if The network selection mode of the terminal is the first access mode, and SNPN or PLMN is selected as the target underlay network.
  • the configuration granularity of the network selection mode can be for each network or each terminal. For example, the same network selection mode can be configured for terminals in each network, or the network selection mode can be configured individually for each terminal.
  • the processing module 210 is specifically configured to access the one or more target overlay networks through the currently registered network if the network to which the terminal is currently registered meets preset network selection conditions; if the network to which the terminal is currently registered meets preset network selection conditions; The network currently registered by the terminal does not meet the preset network selection conditions, and the target underlay network is re-selected according to the first instruction information;
  • the network selection conditions include at least one of the following:
  • the network currently registered by the terminal is in the underlay network list corresponding to the one or more target overlay networks;
  • the one or more target overlay networks are in the overlay network list corresponding to the network currently registered by the terminal;
  • the network currently registered by the terminal conforms to the network selection mode of the terminal.
  • the network currently registered by the terminal if the network currently registered by the terminal is in the underlay network list corresponding to the one or more target overlay networks, the network currently registered by the terminal can be used as the target.
  • the underlay network accesses the target overlay network through the currently registered network and obtains services; if the network currently registered by the terminal is not in the underlay network list corresponding to the target overlay network, the network currently registered by the terminal cannot be used as the target. Underlay network, perform network reselection.
  • the target overlay network can be accessed through the current underlay network; in the case of multiple target overlay networks, if the network currently registered by the terminal is included in the underlay network list corresponding to multiple target overlay networks at the same time, it can be accessed through the current underlay network.
  • the underlay network is connected to the target overlay network, otherwise it cannot be connected to the target overlay network through the current underlay network.
  • the underlay network accesses the target overlay network through the currently registered network and obtains services; if the target overlay network is not in the overlay network list corresponding to the network currently registered by the terminal, the network currently registered by the terminal cannot be used as the target. Underlay network, perform network reselection.
  • the first indication information includes the third information
  • the network currently registered by the terminal can be used as the target underlay network, Access the target overlay network through the currently registered network and obtain services; if there is no mapping relationship between the network currently registered by the terminal and the target overlay network, the network currently registered by the terminal cannot be used as the target underlay network, and network Reselect.
  • the first indication information includes the fourth information
  • the network currently registered by the terminal if the network currently registered by the terminal complies with the network selection mode of the terminal, the network currently registered by the terminal can be used as the target underlay network, through the currently registered network Access the target overlay network; if the network currently registered by the terminal does not comply with the terminal's network selection mode, the network currently registered by the terminal cannot be used as the target underlay network, and network reselection is performed.
  • the network selection mode of the terminal is SNPN access mode, and the network currently registered by the terminal is SNPN, then the network currently registered by the terminal can be used as the target underlay network, and the target overlay network can be accessed through the currently registered network; if The network selection mode is non-SNPN access mode, and the network currently registered by the terminal is SNPN. The network currently registered by the terminal cannot be used as the target underlay network, and network reselection is required.
  • the opportunity to reselect the target underlay network according to the first instruction information includes any of the following:
  • Trigger network reselection immediately and select the target underlay network can be performed immediately after judging that the network currently registered by the terminal cannot be used as the target underlay network. This allows the terminal to access the target underlay network as soon as possible and then access the target overlay network. ;
  • the first timer can be protocol-defined or pre-configured or network-side device configuration, so that terminal access can be controlled as needed.
  • network reselection is triggered and the target underlay network is selected. That is, when there is no high-priority service, the network reselection process is immediately initiated; if there is high-priority service, wait until the high-priority service is available. After the end of high-priority services, a network reselection process is initiated to ensure the normal operation of high-priority services and avoid interruption of high-priority services.
  • the high-priority services include at least one of the following:
  • the processing module 210 is specifically configured to determine a target underlay network set, and select a target underlay network from the target underlay network set;
  • the candidate underlay networks in the target underlay network set satisfy at least one of the following:
  • the target overlay network is in the overlay network list corresponding to the candidate underlay network
  • the processing module 210 is specifically configured to determine, for each target overlay network, a set of candidate underlay networks corresponding to the target overlay network according to the first indication information; and determine a target underlay based on a set of candidate underlay networks of multiple target overlay networks.
  • Network set, the target underlay network set is the intersection of multiple candidate underlay network sets; select a target underlay network from the target underlay network set;
  • the candidate underlay networks in the candidate underlay network set satisfy at least one of the following:
  • the target overlay network is in the overlay network list corresponding to the candidate underlay network
  • the processing module 210 is specifically configured to perform at least one of the following:
  • the network selection device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip.
  • the electronic device may be a terminal or other devices other than the terminal.
  • terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.
  • NAS Network Attached Storage
  • the network selection device provided by the embodiments of the present application can implement each process implemented by the method embodiments in Figures 3 to 5 and achieve the same technical effect. To avoid duplication, the details will not be described here.
  • this embodiment of the present application also provides a communication device 600, which includes a processor 601 and a memory 602.
  • the memory 602 stores programs or instructions that can be run on the processor 601, such as , when the communication device 600 is a terminal, when the program or instruction is executed by the processor 601, each step of the above network selection method embodiment is implemented. steps, and can achieve the same technical effect, to avoid repetition, they will not be repeated here.
  • An embodiment of the present application also provides a terminal, which includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor. When the program or instructions are executed by the processor, the above is implemented. The steps of the described network selection method.
  • An embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the processor is configured to select a target underlay network according to the stored first indication information and one or more target overlay networks, the target overlay network Provide target services for the terminal, and the target underlay network is a network that accesses the target overlay network to establish a data connection; wherein, the first indication information includes at least one of the following: first information, indicating that each overlay The underlay network list corresponding to the network; the second information indicates the overlay network list corresponding to each underlay network; the third information indicates the mapping relationship between the underlay network list and the overlay network list, and the underlay network list includes at least one underlay network, The overlay network list includes at least one overlay network; fourth information indicates the network selection mode of the terminal.
  • the first indication information includes at least one of the following: first information, indicating that each overlay The underlay network list corresponding to the network; the second information indicates the overlay network list corresponding to each underlay network; the third information indicates the mapping relationship between the underlay network list
  • An embodiment of the present application also provides a terminal, including a processor and a communication interface.
  • the terminal embodiment corresponds to the above-mentioned terminal-side method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment. , and can achieve the same technical effect.
  • FIG. 8 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • the terminal 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, a processor 710, etc. At least some parts.
  • the terminal 700 may also include a power supply (such as a battery) that supplies power to various components.
  • the power supply may be logically connected to the processor 710 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions.
  • the terminal structure shown in FIG. 8 does not constitute a limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or some components may be combined or arranged differently, which will not be described again here.
  • the input unit 704 may include a graphics processing unit (Graphics Processing Unit, GPU) 7041 and a microphone 7042.
  • the graphics processor 7041 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras).
  • the display unit 706 may include a display panel 7061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 707 includes a touch panel 7071 and at least one of other input devices 7072 .
  • Touch panel 7071 also called touch screen.
  • the touch panel 7071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 7072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.
  • the radio frequency unit 701 after receiving downlink data from the network side device, can transmit it to the processor 710 for processing; in addition, the radio frequency unit 701 can send uplink data to the network side device.
  • the radio frequency unit 701 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.
  • Memory 709 may be used to store software programs or instructions as well as various data.
  • Memory 709 may primarily include stored programs A first storage area for programs or instructions and a second storage area for storing data, where the first storage area can store an operating system, an application program or instructions required for at least one function (such as a sound playback function, an image playback function, etc.), etc. .
  • memory 709 may include volatile memory or non-volatile memory, or memory 709 may include both volatile and non-volatile memory.
  • 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 removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM).
  • 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
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDRSDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM enhanced synchronous dynamic random access memory
  • Synch link DRAM synchronous link dynamic random access memory
  • SLDRAM direct memory bus
  • the processor 710 may include one or more processing units; optionally, the processor 710 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above-mentioned modem processor may not be integrated into the processor 710.
  • Processor 710 configured to select a target underlay network according to the stored first indication information and one or more target overlay networks.
  • the target overlay network provides target services for the terminal, and the target underlay network is for accessing the target.
  • Overlay network establishes a data connection network;
  • the first indication information includes at least one of the following:
  • the first information indicates the underlay network list corresponding to each overlay network
  • the second information indicates the overlay network list corresponding to each underlay network
  • the third information indicates the mapping relationship between the underlay network list and the overlay network list.
  • the underlay network list includes at least one underlay network, and the overlay network list includes at least one overlay network;
  • the fourth information indicates the network selection mode of the terminal.
  • the network selection mode includes at least one of the following:
  • Non-SNPN access mode indicating priority or only selecting the public land mobile network PLMN as the target underlay network
  • the first access mode indicates selecting SNPN as the target underlay network or indicating selecting PLMN as the target underlay network.
  • the processor 710 is specifically configured to access the one or more target overlay networks through the currently registered network if the network to which the terminal is currently registered meets preset network selection conditions; if the network to which the terminal is currently registered meets preset network selection conditions; terminal The currently registered network does not meet the preset network selection conditions, and the target underlay network is reselected according to the first instruction information;
  • the network selection conditions include at least one of the following:
  • the network currently registered by the terminal is in the underlay network list corresponding to the one or more target overlay networks;
  • the one or more target overlay networks are in the overlay network list corresponding to the network currently registered by the terminal;
  • the network currently registered by the terminal conforms to the network selection mode of the terminal.
  • the processor 710 is specifically configured to determine a target underlay network set, and select a target underlay network from the target underlay network set;
  • the candidate underlay networks in the target underlay network set satisfy at least one of the following:
  • the target overlay network is in the overlay network list corresponding to the candidate underlay network
  • the processor 710 is specifically configured to determine, for each target overlay network, a set of candidate underlay networks corresponding to the target overlay network according to the first indication information; and determine a target underlay based on a set of candidate underlay networks of multiple target overlay networks.
  • Network set, the target underlay network set is the intersection of multiple candidate underlay network sets; select a target underlay network from the target underlay network set;
  • the candidate underlay networks in the candidate underlay network set satisfy at least one of the following:
  • the target overlay network is in the overlay network list corresponding to the candidate underlay network
  • the processor 710 is specifically configured to perform at least one of the following:
  • the opportunity to reselect the target underlay network according to the first indication information includes any of the following:
  • network reselection is triggered and the target underlay network is selected.
  • the high-priority services include at least one of the following:
  • the first indication information is located in at least one of the following items of the terminal:
  • the internal memory ME of the terminal is the internal memory ME of the terminal.
  • Embodiments of the present application also provide a readable storage medium.
  • Programs or instructions are stored on the readable storage medium.
  • the program or instructions are executed by a processor, each process of the above network selection method embodiment is implemented, and the same can be achieved. The technical effects will not be repeated here to avoid repetition.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.
  • An embodiment of the present application further provides a chip.
  • the chip includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the above network selection method embodiment. Each process can achieve the same technical effect. To avoid duplication, it will not be described again here.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application further provide a computer program/program product.
  • the computer program/program product is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the above network selection method embodiment.
  • Each process can achieve the same technical effect. To avoid repetition, we will not go into details here.
  • the methods of the above embodiments can It can be implemented with the help of software plus the necessary common hardware platform. Of course, it can also be implemented through hardware, but in many cases the former is a better implementation method.
  • the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology.
  • the computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

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

Abstract

La présente demande se rapporte au domaine technique des communications, et divulgue un procédé et un appareil de sélection de réseau, et un terminal. Le procédé de sélection de réseau dans des modes de réalisation de la présente demande comprend les étapes suivantes : un terminal sélectionne un réseau de recouvrement cible selon des premières informations d'indication stockées et un ou plusieurs réseaux de recouvrement cibles, le réseau de recouvrement cible fournissant un service cible pour le terminal, et le réseau de recouvrement cible représentant un réseau pour accéder au réseau de recouvrement cible afin d'établir une connexion de données, les premières informations d'indication comprenant des premières informations indiquant une liste de réseaux de recouvrement correspondant à chaque réseau de recouvrement ; et/ou des secondes informations indiquant une liste de réseaux de recouvrement correspondant à chaque réseau de recouvrement ; et/ou des troisièmes informations indiquant une relation de mappage entre la liste de réseaux de recouvrement et la liste de réseaux de recouvrement, la liste de réseaux de recouvrement comprenant au moins un réseau de recouvrement, et la liste de réseaux de recouvrement comprenant au moins un réseau de recouvrement ; et des quatrièmes informations indiquant un mode de sélection de réseau du terminal.
PCT/CN2023/115668 2022-09-06 2023-08-30 Procédé et appareil de sélection de réseau, et terminal WO2024051546A1 (fr)

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