WO2022174744A1 - Procédé et appareil de sélection de plmn, terminal et amf - Google Patents

Procédé et appareil de sélection de plmn, terminal et amf Download PDF

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Publication number
WO2022174744A1
WO2022174744A1 PCT/CN2022/075509 CN2022075509W WO2022174744A1 WO 2022174744 A1 WO2022174744 A1 WO 2022174744A1 CN 2022075509 W CN2022075509 W CN 2022075509W WO 2022174744 A1 WO2022174744 A1 WO 2022174744A1
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WO
WIPO (PCT)
Prior art keywords
information
terminal
sor
plmn
vplmn
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PCT/CN2022/075509
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English (en)
Chinese (zh)
Inventor
王胡成
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大唐移动通信设备有限公司
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Publication of WO2022174744A1 publication Critical patent/WO2022174744A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/04—Access restriction performed under specific conditions based on user or terminal location or mobility data, e.g. moving direction, speed
    • 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

  • the present disclosure relates to the field of communication technologies, and in particular, to a PLMN selection method, device, terminal, and AMF.
  • PLMN Public Land Mobile Network
  • the current technology considers the PLMN selection technology based on the terminal location, allowing the terminal to select an appropriate PLMN according to the current location; and when the terminal location is inaccurate, the network can send an instruction to the terminal, so that the terminal can select a PLMN through the instruction.
  • UE User Equipment
  • the home PLMN Home PLMN, HPLMN
  • SoR Steer of Roaming
  • a shared PLMN identity document is a newly defined PLMN ID whose Mobile Country Code (MCC) starts with 9xx.
  • MCC Mobile Country Code
  • the PLMN is not associated with any one country, but may be able to provide communication services on a global scale. Therefore, in a specific country, there may also be coverage of shared PLMNs. Satellite access networks are capable of providing global network coverage, and operators providing satellite access services are considered shared PLMNs.
  • the terminal location is inaccurate or has no location capability, the terminal is likely to be unable to select an appropriate visited PLMN (Visited PLMN, VPLMN).
  • Visitd PLMN Visited PLMN, VPLMN
  • the purpose of the embodiments of the present disclosure is to provide a PLMN selection method, device, terminal and AMF, so as to solve the problem that the terminal cannot accurately select the PLMN in the related art.
  • an embodiment of the present disclosure provides a public land mobile network PLMN selection method, the method includes:
  • the terminal sends a registration request to the access and mobility management function AMF of the first visited public land mobile network VPLMN;
  • the terminal receives a registration response message or a deregistration request sent by the AMF of the first VPLMN, and the registration response message or the deregistration request includes the location information of the terminal;
  • the terminal performs a PLMN reselection operation according to the location information.
  • the terminal performs a PLMN reselection operation according to the location information, specifically including:
  • the terminal performs a PLMN reselection operation according to the location information of the terminal and the local PLMN selection information contained in the registration rejection message.
  • the method further includes:
  • the terminal receives the roaming guidance SoR information sent by the AMF of the first VPLMN;
  • the terminal performs a PLMN reselection operation according to the location information, which specifically includes:
  • the terminal performs a PLMN reselection operation according to the location information and the SoR information.
  • the SoR information includes a plurality of geo-fence information, and a PLMN selection list corresponding to each of the geo-fence information;
  • the terminal performs a PLMN reselection operation according to the location information and the SoR information, specifically including:
  • the terminal selects one geo-fence information from the plurality of geo-fence information according to the location information, and performs a PLMN reselection operation according to the PLMN selection list corresponding to the selected geo-fence information.
  • the SoR information includes a geo-fence information covering the location of the terminal, and a PLMN selection list corresponding to the geo-fence information;
  • the terminal performs a PLMN reselection operation according to the location information and the SoR information, specifically including:
  • the terminal performs a PLMN reselection operation according to the PLMN selection list corresponding to the geo-fence information.
  • the method further includes:
  • the terminal performs a PLMN reselection operation according to the location information and the SoR information, specifically including:
  • the terminal performs a PLMN reselection operation according to the SoR information
  • the terminal selects the geo-fence information covering the location information of the terminal from the plurality of associated geo-fence information according to the location information, and selects the geo-fence information covering the location information of the terminal according to the selected geo-fence information.
  • the SoR information corresponding to the fence information performs the PLMN reselection operation.
  • the geo-fence information and SoR information are obtained by the AMF of the first VPLMN from the SoR application function AF network element, wherein the geo-fence information and SoR information are obtained by the SoR AF network element when determining the access point of the terminal
  • the first VPLMN is determined based on the location information of the terminal after the shared PLMN.
  • the PLMN selection list is obtained by the AMF of the first VPLMN from the SoR application function AF network element, and the PLMN selection list is determined by the SoR AF network element based on the location information of the terminal.
  • the method also includes:
  • the terminal determines to move out of the coverage corresponding to the geo-fence information, it sends the move out indication information to the SoR AF network element;
  • PLMN reselection operation is performed according to the updated SoR information.
  • the method also includes:
  • the terminal If the terminal is not within the coverage area corresponding to any geo-fence information in the SoR information, the terminal performs a PLMN reselection operation according to the local PLMN selection information.
  • the geo-fence information includes at least one of the following:
  • the location information of the terminal is acquired by the AMF of the first VPLMN through the location management function LMF network element.
  • the location information of the terminal includes at least one of the following:
  • Embodiments of the present disclosure also provide a method for selecting a public land mobile network PLMN, the method comprising:
  • the access and mobility management function AMF of the first visited public land mobile network VPLMN receives the registration request sent by the terminal;
  • the AMF of the first VPLMN sends a registration response message or a de-registration request to the terminal according to the tracking area information or cell information where the terminal is located; the registration response message or de-registration request includes the the location information of the terminal.
  • the registration response message is a registration rejection message.
  • the method further includes:
  • the AMF of the first VPLMN sends roaming guidance SoR information to the terminal.
  • the SoR information includes a plurality of geo-fence information, and a PLMN selection list corresponding to each of the geo-fence information;
  • the SoR information includes a geo-fence information covering the location of the terminal, and a PLMN selection list corresponding to the geo-fence information.
  • the method further includes:
  • the AMF of the first VPLMN sends at least one geofence information associated with the SoR information to the terminal.
  • the geo-fence information and SoR information are obtained by the AMF of the first VPLMN from the SoR application function AF network element, wherein the geo-fence information and SoR information are obtained by the SoR AF network element when determining the access point of the terminal.
  • the first VPLMN is determined based on the location information of the terminal after the shared PLMN.
  • the PLMN selection list is obtained by the AMF of the first VPLMN from the SoR application function AF network element, and the PLMN selection list is determined by the SoR AF network element based on the location information of the terminal.
  • the geo-fence information includes at least one of the following:
  • the method before sending a registration response message or a deregistration request to the terminal, the method further includes:
  • the AMF of the first VPLMN acquires the location information of the terminal through the location management function LMF network element.
  • the location information of the terminal includes at least one of the following:
  • the embodiment of the present disclosure also provides a public land mobile network PLMN selection apparatus, the apparatus includes:
  • a first sending unit configured to send a registration request to the access and mobility management function AMF of the first visited public land mobile network VPLMN;
  • a first receiving unit configured to receive a registration response message or a de-registration request sent by the AMF of the first VPLMN, where the registration response message or the de-registration request includes the location information of the terminal;
  • a first reselection unit configured to perform a PLMN reselection operation according to the location information.
  • the first reselection unit includes:
  • the first reselection subunit is configured to perform a PLMN reselection operation according to the location information of the terminal and the local PLMN selection information contained in the registration rejection message.
  • the device further includes:
  • a third receiving unit configured to receive the roaming guidance SoR information sent by the AMF of the first VPLMN;
  • the first reselection unit includes:
  • a second reselection subunit configured to perform a PLMN reselection operation according to the location information and the SoR information.
  • the SoR information includes a plurality of geo-fence information, and a PLMN selection list corresponding to each of the geo-fence information;
  • the second reselection subunit is further used for:
  • one of the geo-fence information is selected from the plurality of geo-fence information, and a PLMN reselection operation is performed according to the PLMN selection list corresponding to the selected geo-fence information.
  • the SoR information includes a geo-fence information covering the location of the terminal, and a PLMN selection list corresponding to the geo-fence information;
  • the second reselection subunit is further used for:
  • the PLMN reselection operation is performed according to the PLMN selection list corresponding to the geo-fence information.
  • the apparatus after receiving the roaming guidance SoR information sent by the AMF of the first VPLMN, the apparatus further includes:
  • a fourth receiving unit configured to receive at least one geo-fence information associated with the SoR information sent by the AMF of the first VPLMN;
  • the second reselection subunit is further used for:
  • the PLMN reselection operation is performed according to the SoR information
  • the SoR information performs PLMN reselection operation.
  • the geo-fence information and SoR information are obtained by the AMF of the first VPLMN from the SoR application function AF network element, wherein the geo-fence information and SoR information are obtained by the SoR AF network element when determining the terminal access
  • the first VPLMN is determined based on the location information of the terminal after the shared PLMN.
  • the PLMN selection list is obtained by the AMF of the first VPLMN from the SoR application function AF network element, and the PLMN selection list is determined by the SoR AF network element based on the location information of the terminal.
  • the device also includes:
  • a third sending unit configured to send the removal indication information to the SoR AF network element if it is determined to move out of the coverage corresponding to the geo-fence information
  • the fifth receiving unit for receiving the updated SoR information sent by the SoR AF network element
  • the second reselection unit is configured to perform a PLMN reselection operation according to the updated SoR information.
  • the device also includes:
  • the third reselection unit is configured to perform a PLMN reselection operation according to the local PLMN selection information if the terminal is not within the coverage area corresponding to any geo-fence information in the SoR information.
  • the geo-fence information includes at least one of the following:
  • the location information of the terminal is acquired by the AMF of the first VPLMN through the location management function LMF network element.
  • the location information of the terminal includes at least one of the following:
  • the area code of the area where the terminal is currently located
  • An embodiment of the present disclosure further provides a terminal, including a memory, a transceiver, and a processor:
  • a memory for storing a computer program
  • a transceiver for sending and receiving data under the control of the processor
  • a processor for reading the computer program in the memory and performing the following operations:
  • a PLMN reselection operation is performed according to the location information.
  • the processor is further configured to read the computer program in the memory and perform the following operations:
  • the PLMN reselection operation is performed according to the location information of the terminal and the local PLMN selection information contained in the registration rejection message.
  • the processor is further configured to read the computer program in the memory and perform the following operations:
  • Performing a PLMN reselection operation according to the location information specifically includes:
  • a PLMN reselection operation is performed according to the location information and the SoR information.
  • the SoR information includes a plurality of geo-fence information, and a PLMN selection list corresponding to each of the geo-fence information;
  • the processor is also configured to read the computer program in the memory and perform the following operations:
  • one of the geo-fence information is selected from the plurality of geo-fence information, and a PLMN reselection operation is performed according to the PLMN selection list corresponding to the selected geo-fence information.
  • the SoR information includes a geo-fence information covering the location of the terminal, and a PLMN selection list corresponding to the geo-fence information;
  • the processor is also configured to read the computer program in the memory and perform the following operations:
  • the PLMN reselection operation is performed according to the PLMN selection list corresponding to the geo-fence information.
  • the processor is further configured to read the computer program in the memory and perform the following operations:
  • the PLMN reselection operation is performed according to the SoR information
  • the SoR information performs PLMN reselection operation.
  • the geo-fence information and SoR information are obtained by the AMF of the first VPLMN from the SoR application function AF network element, wherein the geo-fence information and SoR information are obtained by the SoR AF network element when determining the access point of the terminal
  • the first VPLMN is determined based on the location information of the terminal after the shared PLMN.
  • the PLMN selection list is obtained by the AMF of the first VPLMN from the SoR application function AF network element, and the PLMN selection list is determined by the SoR AF network element based on the location information of the terminal.
  • the processor is further configured to read the computer program in the memory and perform the following operations:
  • PLMN reselection operation is performed according to the updated SoR information.
  • the processor is further configured to read the computer program in the memory and perform the following operations:
  • the PLMN reselection operation is performed according to the local PLMN selection information.
  • the geo-fence information includes at least one of the following:
  • the location information of the terminal is acquired by the AMF of the first VPLMN through the location management function LMF network element.
  • the location information of the terminal includes at least one of the following:
  • the embodiment of the present disclosure also provides a public land mobile network PLMN selection apparatus, the apparatus includes:
  • a second receiving unit configured to receive a registration request sent by the terminal
  • the second sending unit is configured to, in response to the registration request, send a registration response message or a de-registration request to the terminal according to the tracking area information or cell information where the terminal is located; the registration response message or de-registration request includes the the location information of the terminal.
  • the registration response message is a registration rejection message.
  • the device further includes:
  • the fifth sending unit is configured to send the roaming guidance SoR information to the terminal.
  • the SoR information includes a plurality of geo-fence information, and a PLMN selection list corresponding to each of the geo-fence information;
  • the SoR information includes a geo-fence information covering the location of the terminal, and a PLMN selection list corresponding to the geo-fence information.
  • the apparatus after sending the roaming guidance SoR information to the terminal, the apparatus further includes:
  • a sixth sending unit configured to send at least one piece of geo-fence information associated with the SoR information.
  • the geo-fence information and SoR information are obtained by the AMF of the first VPLMN from the SoR application function AF network element, wherein the geo-fence information and SoR information are obtained by the SoR AF network element when determining the access point of the terminal
  • the first VPLMN is determined based on the location information of the terminal after the shared PLMN.
  • the PLMN selection list is obtained by the AMF of the first VPLMN from the SoR application function AF network element, and the PLMN selection list is determined by the SoR AF network element based on the location information of the terminal.
  • the geo-fence information includes at least one of the following:
  • the device also includes:
  • a location acquisition unit configured to acquire the location information of the terminal through the location management function LMF network element.
  • the location information of the terminal includes at least one of the following:
  • the embodiments of the present disclosure also provide an access and mobility management function AMF, where the AMF is an AMF of the first VPLMN, including a memory, a transceiver, and a processor:
  • a memory for storing a computer program
  • a transceiver for sending and receiving data under the control of the processor
  • a processor for reading the computer program in the memory and performing the following operations:
  • a registration response message or a de-registration request is sent to the terminal according to the tracking area information or cell information where the terminal is located; the registration response message or the de-registration request includes the location information of the terminal.
  • the registration response message is a registration rejection message.
  • the processor is further configured to read the computer program in the memory and perform the following operations:
  • the SoR information includes a plurality of geo-fence information, and a PLMN selection list corresponding to each of the geo-fence information;
  • the SoR information includes a geo-fence information covering the location of the terminal, and a PLMN selection list corresponding to the geo-fence information.
  • the processor is further configured to read the computer program in the memory and perform the following operations:
  • At least one geofence information associated with the SoR information is sent to the terminal.
  • the geo-fence information and SoR information are obtained by the AMF of the first VPLMN from the SoR application function AF network element, wherein the geo-fence information and SoR information are obtained by the SoR AF network element when determining the access point of the terminal
  • the first VPLMN is determined based on the location information of the terminal after the shared PLMN.
  • the PLMN selection list is obtained by the AMF of the first VPLMN from the SoR application function AF network element, and the PLMN selection list is determined by the SoR AF network element based on the location information of the terminal.
  • the geo-fence information includes at least one of the following:
  • the processor is further configured to read the computer program in the memory and perform the following operations:
  • the location information of the terminal is acquired through the location management function LMF network element.
  • the location information of the terminal includes at least one of the following:
  • Embodiments of the present disclosure further provide a processor-readable storage medium, where a computer program is stored in the processor-readable storage medium, and the computer program is used to cause the processor to execute the above method.
  • the terminal sends the location information of the terminal from the AMF of the first VPLMN, so that the terminal with weak positioning capability or no positioning capability can rely on the information obtained from the AMF of the first VPLMN.
  • the location information selects the correct VPLMN to improve the selection efficiency of PLMN.
  • FIG. 1 shows one of the flow charts of the steps of the PLMN selection method provided by the embodiment of the present disclosure
  • FIG. 2 shows the second flow chart of the steps of the PLMN selection method provided by the embodiment of the present disclosure
  • FIG. 3 is an interactive schematic diagram of Example 1 of a PLMN selection method provided by an embodiment of the present disclosure
  • FIG. 4 is an interactive schematic diagram of Example 2 of a PLMN selection method provided by an embodiment of the present disclosure
  • FIG. 5 is an interactive schematic diagram of Example 3 of a PLMN selection method provided by an embodiment of the present disclosure
  • FIG. 6 is an interactive schematic diagram of Example 4 of a PLMN selection method provided by an embodiment of the present disclosure
  • FIG. 7 is an interactive schematic diagram of Example 5 of a PLMN selection method provided by an embodiment of the present disclosure.
  • FIG. 8 shows one of the schematic structural diagrams of the PLMN selection device provided by the embodiment of the present disclosure
  • FIG. 9 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure.
  • FIG. 10 shows the second schematic structural diagram of the PLMN selection apparatus provided by the embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of an AMF provided by an embodiment of the present disclosure.
  • the term "and/or" describes the association relationship of associated objects, and indicates that there can be three kinds of relationships. For example, A and/or B can indicate that A exists alone, A and B exist at the same time, and B exists alone these three situations.
  • the character “/” generally indicates that the associated objects are an "or" relationship.
  • the term “plurality” refers to two or more than two, and other quantifiers are similar.
  • the applicable system may be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet Wireless service (general packet radio service, GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, Long term evolution advanced (LTE-A) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G New Radio (New Radio, NR) system, etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband Code Division Multiple Access
  • general packet Wireless service general packet Radio service
  • GPRS general packet Wireless service
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • time division duplex time division duplex
  • TDD Time division duplex
  • the terminal involved in the embodiments of the present disclosure may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • the name of the terminal may be different.
  • the terminal may be called user equipment (User Equipment, UE).
  • Wireless terminal equipment can communicate with one or more core networks (Core Network, CN) via a radio access network (Radio Access Network, RAN).
  • RAN Radio Access Network
  • "telephone) and computers with mobile terminal equipment eg portable, pocket-sized, hand-held, computer-built or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network.
  • Wireless terminal equipment may also be referred to as system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point , a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in the embodiments of the present disclosure.
  • an embodiment of the present disclosure provides a public land mobile network PLMN selection method, the method includes:
  • Step 101 the terminal sends a registration request to the Access and Mobility Management Function (AMF) of the first visited public land mobile network VPLMN;
  • AMF Access and Mobility Management Function
  • Step 102 the terminal receives a registration response message or a de-registration request sent by the AMF of the first VPLMN, and the registration response message or the de-registration request includes the location information of the terminal;
  • Step 103 the terminal performs a PLMN reselection operation according to the location information.
  • the first VPLMN mentioned in the embodiments of the present disclosure is: a VPLMN selected by a terminal with positioning capability according to its own position and existing PLMN selector information; The VPLMN selected by the PLMN selector information.
  • the location information of the terminal is acquired by the AMF of the first VPLMN through a location management function (Location Management Function, LMF) network element.
  • LMF Location Management Function
  • the AMF of the first VPLMN can obtain the location information of the terminal through the LMF network element.
  • the location information of the terminal obtained by the terminal from the AMF of the first VPLMN is different from the location information obtained by the terminal with positioning capability itself.
  • the location information of the terminal obtained from the AMF of the VPLMN is more accurate, so that the terminal with weak positioning capability or no positioning capability can select the correct VPLMN according to the location information obtained from the AMF of the first VPLMN, thereby improving the selection efficiency of the PLMN.
  • the location information of the terminal includes at least one of the following:
  • the area code of the area where the terminal is currently located (if the terminal is located in an international area and the area has an international code);
  • the country code of the area where the terminal is currently located (if the terminal is located in the country);
  • Geographic location information of the terminal if the terminal is located in an ambiguous location, or in an area without an international code.
  • step 103 includes:
  • the terminal performs a PLMN reselection operation according to the location information of the terminal and the local PLMN selection information contained in the registration rejection message.
  • the PLMN recommended by the VPLMN may not be synchronized with the SoR information of the terminal, or may not be synchronized, resulting in incorrect VPLMN selection;
  • the shared PLMN scenario when the terminal accesses When a PLMN is shared, the shared PLMN may cover the whole world, including the international public area, and the relevant SoR information cannot indicate the PLMN selection list in the international area.
  • the method further includes:
  • the terminal receives the roaming guidance SoR information sent by the AMF of the first VPLMN; wherein, the SoR information is passed by the AMF of the first VPLMN through the SoR application function (Steer of Roaming-Application Function, SoR-AF) network of the home PLMN Yuan obtained.
  • SoR-AF Roaming-Application Function
  • the SoR-AF network element determines the SoR information based on the location information of the terminal.
  • step 103 includes:
  • the terminal performs a PLMN reselection operation according to the location information and the SoR information.
  • the terminal can select the correct PLMN according to the SoR information provided by the home PLMN, so as to improve the selection efficiency of the PLMN.
  • the geo-fence information exists in two forms, namely:
  • Form 1 the SoR information itself is enhanced, that is, the geofence information is added to the SoR information.
  • the SoR information is unchanged (same as the related SoR information), but the SoR information is associated with the geofence information.
  • the SoR information includes a plurality of geo-fence information, and a PLMN selection list corresponding to each of the geo-fence information; the terminal performs a PLMN reselection operation according to the location information and the SoR information, specifically include:
  • the terminal selects one piece of geo-fence information from the plurality of geo-fence information according to the location information, and performs a PLMN reselection operation according to the PLMN selection list corresponding to the selected geo-fence information.
  • the SoR information can be in the form of Table 1:
  • the SoR information includes a geo-fence information covering the location of the terminal, and a PLMN selection list corresponding to the geo-fence information; the terminal is based on the location information and the SoR information.
  • Perform PLMN reselection operations including:
  • the terminal performs a PLMN reselection operation according to the PLMN selection list corresponding to the geo-fence information.
  • the SoR information can be in the form of Table 2:
  • the SoR information is associated with at least one geofence information.
  • the method further includes:
  • the terminal performs a PLMN reselection operation according to the location information and the SoR information, specifically including:
  • the terminal performs a PLMN reselection operation according to the SoR information
  • the terminal selects the geo-fence information covering the location information of the terminal from the plurality of associated geo-fence information according to the location information, and selects the geo-fence information covering the location information of the terminal according to the selected geo-fence information.
  • the SoR information corresponding to the fence information performs the PLMN reselection operation.
  • the terminal does not need to locate, and directly performs PLMN selection according to the SoR information; otherwise, the terminal needs to locate itself, and determine which geofence information corresponds to the coverage area according to its own location, and then PLMN selection is performed using the SoR information associated with the geofence information.
  • the SoR-AF network element can only provide the geo-fence information covering the location of the terminal and the PLMN selection list within the geographic range corresponding to the geo-fence information; or, if the terminal does not have the positioning capability, the SoR-AF - The AF network element may only provide SoR information associated with the geofence information covering the location of the terminal. In this case, the SoR-AF network element is required to obtain the terminal's positioning capability information (that is, whether the terminal has the positioning capability), or the AMF or Unified Data Management (UDM) entity is required to actively report the terminal's positioning capability information.
  • the SoR-AF network element is required to obtain the terminal's positioning capability information (that is, whether the terminal has the positioning capability), or the AMF or Unified Data Management (UDM) entity is required to actively report the terminal's positioning capability information.
  • UDM Unified Data Management
  • the terminal when the terminal accesses the shared PLMN, it can only obtain the PLMN selection list of the area where the terminal is located, so as to avoid providing the terminal with unnecessary PLMN selection information (for example, the area that the terminal will not reach at present).
  • the geo-fencing information and the SoR information are obtained by the AMF of the first VPLMN from a SoR application function (Application Function, AF) network element, wherein the geo-fencing (Geo-Fencing)
  • the information and SoR information are determined by the SoR AF network element based on the location information of the terminal after determining that the first VPLMN accessed by the terminal is a shared PLMN.
  • the PLMN selection list is obtained by the AMF of the first VPLMN from the SoR application function AF network element, and the PLMN selection list is obtained by the SoR AF network element based on the location information of the terminal Sure.
  • the method further includes:
  • the terminal determines to move out of the coverage corresponding to the geo-fence information, it sends the move out indication information to the SoR AF network element;
  • PLMN reselection operation is performed according to the updated SoR information.
  • SoR transparent container transparent container
  • removal indication information used to instruct the terminal to move out of the coverage corresponding to the geofence information. range
  • Method 1 the terminal initiates the registration process, carrying the SoR transparent container
  • the terminal sends an uplink Non-Access Stratum Transport (UL NAS Transport) message, which carries the SoR transparent container.
  • UL NAS Transport uplink Non-Access Stratum Transport
  • the first VPLMN sends the SoR transparent container to the UDM of the home PLMN, the UDM parses the content of the SoR transparent container, and requests the SoR information from the SoR-AF network element according to the instructions.
  • the SoR-AF determines that the current PLMN is a shared PLMN, it obtains the terminal location, Then the SoR information is calculated according to the terminal position and fed back to the UDM; the UDM sends the updated SoR information to the terminal, and the terminal uses the newly received SoR information to perform PLMN selection. In this way, the terminal can select the correct PLMN according to the SoR information provided by the home PLMN, thereby improving the selection efficiency of the PLMN.
  • the method further includes:
  • the terminal If the terminal is not within the coverage area corresponding to any geo-fence information in the SoR information, the terminal performs a PLMN reselection operation according to the local PLMN selection information.
  • the terminal needs to exclude the first VPLMN when performing PLMN reselection. That is, after the terminal moves out of the coverage area corresponding to any geo-fence information of the SoR information, it needs to trigger PLMN reselection; when the terminal performs PLMN reselection, it needs to exclude the current registered PLMN (ie the first VPLMN), that is, the terminal reselection
  • the VPLMN initiates a registration request to obtain new SoR information and perform PLMN selection based on the new SoR information.
  • the geo-fence information includes at least one of the following:
  • the terminal sends the location information of the terminal from the AMF of the first VPLMN, so that the terminal with weak positioning capability or no positioning capability can select the correct VPLMN according to the location information obtained from the AMF of the first VPLMN , to improve the selection efficiency of PLMN.
  • an embodiment of the present disclosure further provides a method for selecting a public land mobile network PLMN, the method comprising:
  • Step 201 the access and mobility management function AMF of the first visited public land mobile network VPLMN receives the registration request sent by the terminal;
  • Step 202 in response to the registration request, the AMF of the first VPLMN sends a registration response message or a de-registration request to the terminal according to the tracking area information or cell information where the terminal is located; the registration response message or the de-registration request contains the location information of the terminal.
  • the AMF of the first VPLMN may notify the terminal of its location information through a registration response message before accepting the registration request of the terminal; or, the AMF of the first VPLMN may accept the registration request of the terminal (that is, after the terminal is successfully registered) , initiate a deregistration (Deregistration) process, and inform the terminal of its location information through a deregistration request message.
  • the AMF of the first VPLMN may accept the registration request of the terminal (that is, after the terminal is successfully registered) , initiate a deregistration (Deregistration) process, and inform the terminal of its location information through a deregistration request message.
  • the first VPLMN mentioned in the embodiments of the present disclosure is: a VPLMN selected by a terminal with positioning capability according to its own position and existing PLMN selector information; The VPLMN selected by the PLMN selector information.
  • the method further includes:
  • the AMF of the first VPLMN acquires the location information of the terminal through the location management function LMF network element. Regardless of whether the terminal has a positioning function or not, when the terminal accesses the first VPLMN through a satellite, the AMF of the first VPLMN can obtain the location information of the terminal through the LMF network element.
  • the location information of the terminal obtained by the terminal from the AMF of the first VPLMN is different from the location information obtained by the terminal with positioning capability itself.
  • the location information of the terminal obtained from the AMF of the VPLMN is more accurate, so that the terminal with weak positioning capability or no positioning capability can select the correct VPLMN according to the location information obtained from the AMF of the first VPLMN, thereby improving the selection efficiency of the PLMN.
  • the location information of the terminal includes at least one of the following:
  • the area code of the area where the terminal is currently located (if the terminal is located in an international area and the area has an international code);
  • the country code of the area where the terminal is currently located (if the terminal is located in the country);
  • Geographic location information of the terminal if the terminal is located in an ambiguous location, or in an area without an international code.
  • the registration response message is a registration rejection message. Then, the terminal performs a PLMN reselection operation according to the location information of the terminal and the local PLMN selection information contained in the registration rejection message.
  • the PLMN recommended by the VPLMN may not be synchronized with the SoR information of the terminal, or may not be synchronized, resulting in incorrect VPLMN selection;
  • the shared PLMN scenario when the terminal accesses When a PLMN is shared, the shared PLMN may cover the whole world, including the international public area, and the relevant SoR information cannot indicate the PLMN selection list in the international area.
  • the method further includes:
  • the AMF of the first VPLMN sends roaming guidance SoR information to the terminal.
  • the SoR information is obtained by the AMF of the first VPLMN through the SoR application function (SoR-AF) network element of the home PLMN.
  • SoR-AF SoR application function
  • the SoR-AF network element determines the SoR information based on the location information of the terminal.
  • the terminal can select the correct PLMN according to the SoR information provided by the home PLMN, so as to improve the selection efficiency of the PLMN.
  • the geo-fence information exists in two forms, which are:
  • Form 1 the SoR information itself is enhanced, that is, the geofence information is added to the SoR information.
  • the SoR information is unchanged (same as the related SoR information), but the SoR information is associated with the geofence information.
  • the SoR information includes a plurality of geo-fence information, and a PLMN selection list corresponding to each of the geo-fence information; or, the SoR information includes a geo-fence information covering the location of the terminal, And, a PLMN selection list corresponding to the geofence information.
  • the SoR information is associated with at least one geofence information.
  • the method further includes:
  • the AMF of the first VPLMN sends at least one geofence information associated with the SoR information.
  • the SoR-AF network element can only provide the geo-fence information covering the location of the terminal and the PLMN selection list within the geographic range corresponding to the geo-fence information; or, if the terminal does not have the positioning capability, the SoR-AF - The AF network element may only provide SoR information associated with the geo-fence information covering the location of the terminal. In this case, the SoR-AF network element is required to obtain the terminal's positioning capability information (ie, whether the terminal has the positioning capability), or the AMF or UDM is required to actively report the terminal's positioning capability information.
  • the terminal when the terminal accesses the shared PLMN, it can only obtain the PLMN selection list of the area where the terminal is located, so as to avoid providing the terminal with unnecessary PLMN selection information (for example, the area that the terminal will not reach at present).
  • the geo-fence information and SoR information are obtained by the AMF of the first VPLMN from the SoR application function AF network element, wherein the geo-fence information and SoR information are obtained by the SoR AF network
  • the element is determined based on the location information of the terminal after determining that the first VPLMN accessed by the terminal is a shared PLMN.
  • the PLMN selection list is obtained by the AMF of the first VPLMN from the SoR application function AF network element, and the PLMN selection list is obtained by the SoR AF network element based on the location information of the terminal Sure.
  • the geo-fence information includes at least one of the following:
  • the SoR information may only include a PLMN selection list, and is not associated with the geo-fence information, but in this case, the AMF needs to send the terminal's information determined by the LMF in addition to the SoR information. Location information, so that the terminal can select the correct VPLMN according to the accurate location information and SoR information.
  • the AMF of the first VPLMN sends the location information of the terminal to the terminal in response to the registration request of the terminal, so that the terminal with weak positioning capability or no positioning capability can select the correct VPLMN according to the location information obtained from the first network element, Improve the selection efficiency of PLMN.
  • Example 1 the registration request of the terminal with positioning capability is rejected or the terminal is deregistered after registration, as shown in Figure 3:
  • Step 31 the terminal selects VPLMN1 to register according to its own location and existing PLMN selector information.
  • Step 32 in order to confirm the location of the terminal, the AMF in the VPLMN1 requests the LMF for the location information of the terminal, carries an indication in the request, and requests the LMF to provide the area code or country code where the terminal is currently located.
  • Step 33a according to the terminal location or area information, it is determined that the terminal is not allowed to access this VPLMN1, then the request is rejected, and the accurate location information of the terminal (obtained from the LMF) is given in the rejection message, including the current area code or country where the terminal is located. code, or geographic location information.
  • step 33b after the AMF accepts the registration request of the terminal, it determines that the terminal is not allowed to access the VPLMN1 according to the terminal location or area information, then initiates the cancellation registration process, and sends the terminal to the registration request to carry the accurate location information of the terminal. (obtained from LMF), including the area code or country code where the terminal is currently located, or geographic location information.
  • Step 34 the terminal re-executes the PLMN selection according to the acquired location information.
  • the terminal initiates the registration process after selecting the correct VPLMN2.
  • Step 35 the AMF of VPLMN2 needs to obtain the area code or country code where the terminal is currently located from the LMF to determine whether the terminal is allowed to access.
  • Step 36 after the terminal accesses the VPLMN2, the SoR update process may be triggered.
  • Example 2 the terminal registration request is accepted, as shown in Figure 4:
  • Step 41 the terminal selects VPLMN1 for registration according to its own location and existing PLMN selector information.
  • Step 42 in order to confirm the location of the terminal, the AMF in the VPLMN1 requests the LMF for the location information of the terminal.
  • the request carries an indication and requests the LMF to provide the area code or country code where the terminal is currently located.
  • Step 43 the AMF in the VPLMN1 determines that the terminal is allowed to access this VPLMN1 according to the location information of the terminal, and acquires the terminal subscription information from the HPLMN.
  • Step 44 the UDM determines that the SoR information needs to be sent according to the indication of the subscription information of the terminal, and sends a request to update the SoR information to the SoR-AF.
  • Step 45 When the SoR-AF determines that the PLMN1 is a shared PLMN ID (beginning with 9xx), it acquires the terminal location, and then calculates the SoR information according to the terminal location. SoR-AF also needs to calculate the area information where the SoR information is valid as a geofence;
  • Step 46 the SoR-AF sends the SoR information (note: the SoR information includes geo-fence information) to the terminal through the UDM and AMF, or the SoR-AF sends the SoR information through the UDM and AMF (note: the SoR information does not include the geo-fence information) to the terminal.
  • Geofence information and the geofence information associated with the SoR information are sent to the terminal together;
  • Step 47 if the SoR information has only one geo-fence information associated with it, the terminal does not need to locate, and directly performs PLMN selection according to the SoR information; otherwise, the terminal needs to locate itself, and determine a geo-fence information according to its own position, and then use the determined location.
  • the SoR information associated with the geofence information performs PLMN selection.
  • Step 51 the terminal without positioning capability cannot select a PLMN according to the location information, so it can only select a VPLMN, such as VPLMN1, according to the saved PLMN selector, and send a registration request.
  • a VPLMN such as VPLMN1
  • Step 52 the AMF1 in the VPLMN1 obtains the location information of the terminal from the LMF after determining that the terminal has no positioning capability according to the capability of the terminal, or according to the display indication of the terminal.
  • Step 53 AMF1 judges whether to allow access according to the location information of the terminal, and feeds back its location information to the terminal in the registration acceptance or rejection registration message.
  • the terminal is located in a specific international area) or geographic location information (the terminal is located in an area without a specific area code).
  • Step 54 the terminal selects an appropriate VPLMN2 according to the location information fed back by the AMF1 and sends a registration request.
  • Step 55 same as step 52, the AMF2 in the VPLMN2 acquires the location information of the terminal from the LMF.
  • Step 56 in addition to feeding back its location information to the terminal, the AMF2 may also feed back SoR information according to Example 2.
  • Example 4 After the terminal moves out of the coverage area corresponding to the geo-fencing (Geo-Fencing) information, PLMN reselection is performed, as shown in Figure 6:
  • Step 61 after the terminal moves and is not in any Geo-Fencing area in the current SoR, PLMN reselection needs to be triggered.
  • Step 62 when the terminal performs PLMN reselection, it needs to exclude the current registered PLMN;
  • Step 63 the registration process; the same as steps 41-46 in the second example;
  • Step 64 the terminal uses the newly received SoR information to perform PLMN reselection.
  • Example 5 After the terminal moves out of the coverage area corresponding to the Geo-Fencing information, the notification SoR-AF is displayed, as shown in Figure 7:
  • Step 71a the terminal initiates the registration process, carrying the SoR transparent container
  • Step 71b the terminal sends a UL NAS Transport message, which carries the SoR transparent container.
  • Step 72 the AMF sends the SoR transparent container to the UDM of the HPLMN.
  • Step 73 the UDM parses the content of the SoR transparent container, and requests SoR information from the SoR-AF according to the instruction.
  • Step 74 When the SoR-AF determines that the current PLMN is a shared PLMN ID (beginning with 9xx), it acquires the terminal location, and then calculates the SoR information and geofence information according to the terminal location. The details are the same as step 45 in Example 2.
  • Step 75 the SoR-AF sends the updated SoR information to the terminal through the UDM and the AMF.
  • Step 76 the terminal uses the newly received SoR information to perform PLMN selection.
  • the terminal acquires the location information and/or SoR information of the terminal from the AMF of the first VPLMN, so that the terminal with weak positioning capability or no positioning capability can select the correct VPLMN according to the location information acquired from the AMF, and /or, enabling the terminal to select the correct PLMN according to the SoR information provided by the home PLMN, thereby improving the selection efficiency of the PLMN.
  • an embodiment of the present disclosure further provides a public land mobile network PLMN selection apparatus, which is applied to a terminal, and the apparatus includes:
  • the first sending unit 801 is used to send a registration request to the access and mobility management function AMF of the first visited public land mobile network VPLMN;
  • a first receiving unit 802 configured to receive a registration response message or a de-registration request sent by the AMF of the first VPLMN, where the registration response message or the de-registration request includes the location information of the terminal;
  • the first reselection unit 803 is configured to perform a PLMN reselection operation according to the location information.
  • the first reselection unit includes:
  • the first reselection subunit is configured to perform a PLMN reselection operation according to the location information of the terminal and the local PLMN selection information contained in the registration rejection message.
  • the apparatus further includes:
  • a third receiving unit configured to receive the roaming guidance SoR information sent by the AMF of the first VPLMN;
  • the first reselection unit includes:
  • a second reselection subunit configured to perform a PLMN reselection operation according to the location information and the SoR information.
  • the SoR information includes a plurality of geo-fence information, and a PLMN selection list corresponding to each of the geo-fence information;
  • the second reselection subunit is further used for:
  • one of the geo-fence information is selected from the plurality of geo-fence information, and a PLMN reselection operation is performed according to the PLMN selection list corresponding to the selected geo-fence information.
  • the SoR information includes a geo-fence information covering the location of the terminal, and a PLMN selection list corresponding to the geo-fence information;
  • the second reselection subunit is further used for:
  • the PLMN reselection operation is performed according to the PLMN selection list corresponding to the geo-fence information.
  • the apparatus after receiving the roaming guidance SoR information sent by the AMF of the first VPLMN, the apparatus further includes:
  • the 4th receiving unit is used for receiving at least one geo-fence information associated with the SoR information sent by the AMF of the first VPLMN;
  • the second reselection subunit is further used for:
  • the PLMN reselection operation is performed according to the SoR information
  • the SoR information performs PLMN reselection operation.
  • the geo-fence information and SoR information are obtained by the AMF of the first VPLMN from the SoR application function AF network element, wherein the geo-fence information and SoR information are obtained by the SoR AF network element in the It is determined that the first VPLMN accessed by the terminal is determined based on the location information of the terminal after the shared PLMN.
  • the PLMN selection list is obtained by the AMF of the first VPLMN from the SoR application function AF network element, and the PLMN selection list is determined by the SoR AF network element based on the location information of the terminal.
  • the device further includes:
  • a third sending unit configured to send the removal indication information to the SoR AF network element if it is determined to move out of the coverage corresponding to the geo-fence information
  • the fifth receiving unit for receiving the updated SoR information sent by the SoR AF network element
  • the second reselection unit is configured to perform a PLMN reselection operation according to the updated SoR information.
  • the device further includes:
  • the third reselection unit is configured to perform a PLMN reselection operation according to the local PLMN selection information if the terminal is not within the coverage area corresponding to any geo-fence information in the SoR information.
  • the geo-fence information includes at least one of the following:
  • the location information of the terminal is acquired by the AMF of the first VPLMN through the location management function LMF network element.
  • the location information of the terminal includes at least one of the following:
  • the terminal obtains the location information of the terminal from the AMF of the first VPLMN, so that the terminal with weak positioning capability or no positioning capability can select the correct VPLMN according to the location information obtained from the AMF, thereby improving the selection efficiency of the PLMN.
  • the method and the device are conceived based on the same application. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and repeated descriptions will not be repeated here.
  • an embodiment of the present disclosure further provides a terminal, including a memory 920, a transceiver 910, and a processor 900:
  • the memory 920 is used to store computer programs; the transceiver 910 is used to send and receive data under the control of the processor 900; the processor 900 is used to read the computer programs in the memory 920 and perform the following operations:
  • a PLMN reselection operation is performed according to the location information.
  • the processor 900 is further configured to read the computer program in the memory 920 and perform the following operations:
  • the PLMN reselection operation is performed according to the location information of the terminal and the local PLMN selection information contained in the registration rejection message.
  • the processor 900 is further configured to read the computer program in the memory 920 and execute the following operate:
  • Performing a PLMN reselection operation according to the location information specifically includes:
  • a PLMN reselection operation is performed according to the location information and the SoR information.
  • the SoR information includes a plurality of geo-fence information, and a PLMN selection list corresponding to each of the geo-fence information;
  • the processor 900 is further configured to read the computer program in the memory 920 and perform the following operations:
  • one of the geo-fence information is selected from the plurality of geo-fence information, and a PLMN reselection operation is performed according to the PLMN selection list corresponding to the selected geo-fence information.
  • the SoR information includes a geo-fence information covering the location of the terminal, and a PLMN selection list corresponding to the geo-fence information;
  • the processor 900 is further configured to read the computer program in the memory 920 and perform the following operations:
  • the PLMN reselection operation is performed according to the PLMN selection list corresponding to the geo-fence information.
  • the processor 900 is further configured to read the computer program in the memory 920 and perform the following operations:
  • the PLMN reselection operation is performed according to the SoR information
  • the SoR information performs PLMN reselection operation.
  • the geo-fence information and SoR information are obtained by the AMF of the first VPLMN from the SoR application function AF network element, wherein the geo-fence information and SoR information are obtained by the SoR AF network element in the It is determined that the first VPLMN accessed by the terminal is determined based on the location information of the terminal after the shared PLMN.
  • the PLMN selection list is obtained by the AMF of the first VPLMN from the SoR application function AF network element, and the PLMN selection list is determined by the SoR AF network element based on the location information of the terminal.
  • the processor 900 is further configured to read the computer program in the memory 920 and perform the following operations:
  • PLMN reselection operation is performed according to the updated SoR information.
  • the processor 900 is further configured to read the computer program in the memory 920 and perform the following operations:
  • the PLMN reselection operation is performed according to the local PLMN selection information.
  • the geo-fence information includes at least one of the following:
  • the location information of the terminal is acquired by the AMF of the first VPLMN through the location management function LMF network element.
  • the location information of the terminal includes at least one of the following:
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 900 and various circuits of memory represented by memory 920 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 910 may be a number of elements, including transmitters and receivers, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like Transmission medium.
  • the user interface 930 may also be an interface capable of externally connecting a desired device, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 900 in performing operations.
  • the processor 900 may be a central processing unit (central processing unit, CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable Logic device (Complex Programmable Logic Device, CPLD), the processor can also use a multi-core architecture.
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • FPGA field programmable gate array
  • CPLD Complex Programmable Logic Device
  • the processor is configured to execute any one of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions by invoking the computer program stored in the memory.
  • the processor and memory may also be physically separated.
  • the terminal obtains the location information of the terminal from the AMF of the first VPLMN, so that the terminal with weak positioning capability or no positioning capability can select the correct VPLMN according to the location information obtained from the AMF, thereby improving the selection efficiency of the PLMN.
  • the method and the terminal are conceived based on the same application. Since the principles of the method and the terminal for solving problems are similar, the implementation of the terminal and the method can be referred to each other, and repeated descriptions will not be repeated.
  • an embodiment of the present disclosure further provides an apparatus for selecting a public land mobile network PLMN, which is applied to the AMF of the first VPLMN, and the apparatus includes:
  • a second receiving unit 1001 configured to receive a registration request sent by a terminal
  • the second sending unit 1002 is configured to, in response to the registration request, send a registration response message or a de-registration request to the terminal according to the tracking area information or cell information where the terminal is located; the registration response message or the de-registration request includes location information of the terminal.
  • the registration response message is a registration rejection message.
  • the apparatus further includes:
  • the fifth sending unit is configured to send the roaming guidance SoR information to the terminal.
  • the SoR information includes a plurality of geo-fence information, and a PLMN selection list corresponding to each of the geo-fence information;
  • the SoR information includes a geo-fence information covering the location of the terminal, and a PLMN selection list corresponding to the geo-fence information.
  • the apparatus after sending the roaming guidance SoR information to the terminal, the apparatus further includes:
  • a sixth sending unit configured to send at least one piece of geo-fence information associated with the SoR information.
  • the geo-fence information and SoR information are obtained by the AMF of the first VPLMN from the SoR application function AF network element, wherein the geo-fence information and SoR information are obtained by the SoR AF network element in the It is determined that the first VPLMN accessed by the terminal is determined based on the location information of the terminal after the shared PLMN.
  • the PLMN selection list is obtained by the AMF of the first VPLMN from the SoR application function AF network element, and the PLMN selection list is determined by the SoR AF network element based on the location information of the terminal.
  • the geo-fence information includes at least one of the following:
  • the device further includes:
  • a location acquisition unit configured to acquire the location information of the terminal through the location management function LMF network element.
  • the location information of the terminal includes at least one of the following:
  • the AMF of the first VPLMN sends the location information of the terminal to the terminal in response to the registration request of the terminal, so that the terminal with weak positioning capability or no positioning capability can select the correct VPLMN according to the location information obtained from the AMF, Improve the selection efficiency of PLMN.
  • the method and the device are conceived based on the same application. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and repeated descriptions will not be repeated here.
  • an embodiment of the present disclosure further provides an AMF, where the AMF is an AMF of a first VPLMN, including a memory 1120, a transceiver 1110, and a processor 1100:
  • the memory 1120 is used to store computer programs; the transceiver 1110 is used to send and receive data under the control of the processor 1100; the processor 1100 is used to read the computer program in the memory 1120 and perform the following operations:
  • a registration response message or a de-registration request is sent to the terminal according to the tracking area information or cell information where the terminal is located; the registration response message or the de-registration request includes the location information of the terminal.
  • the registration response message is a registration rejection message.
  • the processor 1100 is further configured to read the computer program in the memory 1120 and execute the following operate:
  • the SoR information includes a plurality of geo-fence information, and a PLMN selection list corresponding to each of the geo-fence information;
  • the SoR information includes a geo-fence information covering the location of the terminal, and a PLMN selection list corresponding to the geo-fence information.
  • the processor 1100 is further configured to read the computer program in the memory 1120 and perform the following operations:
  • At least one geofence information associated with the SoR information is sent to the terminal.
  • the geo-fence information and SoR information are obtained by the AMF of the first VPLMN from the SoR application function AF network element, wherein the geo-fence information and SoR information are obtained by the SoR AF network element in the It is determined that the first VPLMN accessed by the terminal is determined based on the location information of the terminal after the shared PLMN.
  • the PLMN selection list is obtained by the AMF of the first VPLMN from the SoR application function AF network element, and the PLMN selection list is determined by the SoR AF network element based on the location information of the terminal.
  • the geo-fence information includes at least one of the following:
  • the processor 1100 is further configured to read the computer program in the memory 1120 and perform the following operations:
  • the location information of the terminal is acquired through the location management function LMF network element.
  • the location information of the terminal includes at least one of the following:
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1100 and various circuits of memory represented by memory 1120 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 1110 may be a number of elements, including a transmitter and a receiver, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 may store data used by the processor 1100 in performing operations.
  • the processor 1100 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (Complex). Programmable Logic Device, CPLD), the processor can also adopt a multi-core architecture.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate array
  • Complex complex programmable logic device
  • Programmable Logic Device, CPLD Programmable Logic Device
  • the processor can also adopt a multi-core architecture.
  • the AMF of the first VPLMN sends the location information of the terminal to the terminal in response to the registration request of the terminal, so that the terminal with weak positioning capability or no positioning capability can select the correct VPLMN according to the location information obtained from the AMF, Improve the selection efficiency of PLMN.
  • the method and the network element are conceived based on the same application. Since the principles of the method and the network element for solving problems are similar, the implementation of the network element and the method can be referred to each other, and the repetition will not be repeated.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium.
  • the technical solutions of the present disclosure can be embodied in the form of software products in essence, or the parts that contribute to related technologies, or all or part of the technical solutions, and the computer software products are stored in a storage medium.
  • a computer device which may be a personal computer, a server, or a network device, etc.
  • 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 disk and other media that can store program codes .
  • Embodiments of the present disclosure further provide a processor-readable storage medium, where a computer program is stored in the processor-readable storage medium, and the computer program is used to cause the processor to execute the above method; the processor
  • the readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic memory (such as floppy disk, hard disk, magnetic tape, Magneto-Optical Disk (MO), etc.), optical memory ( For example, Compact Disk (CD), Digital Versatile Disc (DVD), Blu-ray Disc (BD), High-Definition Versatile Disc (HVD), etc.), and semiconductor memory ( For example, ROM, Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Non-volatile Memory (NAND FLASH) , Solid State Disk (Solid State Disk or Solid State Drive, SSD)), etc.
  • magnetic memory such as floppy disk, hard disk, magnetic tape, Magneto-
  • embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.
  • processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the processor-readable memory result in the manufacture of means including the instructions product, the instruction means implements the functions specified in the flow or flow of the flowchart and/or the block or blocks of the block diagram.
  • processor-executable instructions can also be loaded onto a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process that Execution of the instructions provides steps for implementing the functions specified in the flowchart or blocks and/or the block or blocks of the block diagrams.
  • modules can all be implemented in the form of software calling through processing elements; they can also all be implemented in hardware; some modules can also be implemented in the form of calling software through processing elements, and some modules can be implemented in hardware.
  • the determination module may be a separately established processing element, or may be integrated into a certain chip of the above-mentioned device to be implemented, in addition, it may also be stored in the memory of the above-mentioned device in the form of program code, and a certain processing element of the above-mentioned device may Call and execute the function of the above determined module.
  • the implementation of other modules is similar. In addition, all or part of these modules can be integrated together, and can also be implemented independently.
  • the processing element described here may be an integrated circuit with signal processing capability. In the implementation process, each step of the above-mentioned method or each of the above-mentioned modules can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.
  • each module, unit, sub-unit or sub-module may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuit (ASIC), or, one or Multiple microprocessors (digital signal processors, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), etc.
  • ASIC Application Specific Integrated Circuit
  • DSP digital signal processors
  • FPGA Field Programmable Gate Array
  • the processing element may be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processors that can call program codes.
  • CPU central processing unit
  • these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip

Abstract

L'invention fournit un procédé et un appareil de sélection de PLMN, un terminal et une AMF. Le procédé comprend les étapes suivantes : un terminal envoie une demande d'enregistrement à une fonction de gestion d'accès et de mobilité (AMF) d'un premier réseau de téléphonie mobile terrestre public (réseau VPLMN) ; le terminal reçoit un message de réponse d'enregistrement ou une demande de désenregistrement envoyée par l'AMF du premier réseau VPLMN, le message de réponse d'enregistrement ou la demande de désenregistrement comprenant des informations d'emplacement du terminal ; et le terminal exécute une opération de resélection de PLMN en fonction des informations d'emplacement.
PCT/CN2022/075509 2021-02-18 2022-02-08 Procédé et appareil de sélection de plmn, terminal et amf WO2022174744A1 (fr)

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CN202110190546.8A CN114979936A (zh) 2021-02-18 2021-02-18 Plmn选择方法、装置、终端及amf

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