Communication method and communication device

Abstract

Provided are a communication method and a communication device, the method comprising: a terminal device receiving first information from a first core network element, the first information being used for indicating at least one radio access technology (RAT) type and / or at least one core network (CN) type. According to the method in the embodiment of the invention, interruption of the service can be avoided.

Description

Communication method and communication device Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a communication method and a communication device. Background Art

[0002] In some communication systems, when a natural disaster (such as a fire, earthquake, or tsunami) occurs in the area where a public land mobile network (PLMN) is located and prevents normal service, terminal devices in the PLMN can switch to a pre-configured network to obtain basic services. However, the current switching mechanism is not perfect, and service interruption may occur.

[0003] Summary of the Invention

[0004] The embodiments of the present application provide a communication method and a communication device. The following describes various aspects of the embodiments of the present application.

[0005] In a first aspect, a communication method is provided, including: a terminal device receives first information from a first core network element, the first information being used to indicate at least one radio access technology RAT type and / or at least one core network CN type.

[0006] In a second aspect, a communication method is provided, including: a first core network element sends first information to a terminal device, where the first information is used to indicate at least one radio access technology RAT type and / or at least one core network CN type.

[0007] According to a third aspect, a communication method is provided, including: after a terminal device completes registration on a first core network element, a second core network element sends user data of the terminal device to the first core network element, wherein the user data includes first information, and the first information is used to indicate at least one radio access technology RAT type and / or at least one core network CN type.

[0008] In a fourth aspect, a communication device is provided, including: a receiving unit, configured to receive first information from a first core network element, the first information being used to indicate at least one radio access technology RAT type and / or at least one core network CN type.

[0009] In a fifth aspect, a communication device is provided, including: a sending unit, used to send first information to a terminal device, where the first information is used to indicate at least one radio access technology RAT type and / or at least one core network CN type.

[0010] In the sixth aspect, a communication device is provided, including: a sending unit, used to: after the terminal device completes registration on the first core network element, send user data of the terminal device to the first core network element, the user data contains first information, and the first information is used to indicate at least one radio access technology RAT type and / or at least one core network CN type.

[0011] In the seventh aspect, a communication device is provided, comprising a memory, a transceiver and a processor, wherein the memory is used to store programs, the processor sends and receives data through the transceiver, and the processor is used to call the program in the memory so that the communication device executes the method described in any one of the first to third aspects.

[0012] In an eighth aspect, a communication device is provided, comprising a processor for calling a program from a memory so that the communication device executes the method described in any one of the first to third aspects.

[0013] In a ninth aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes the method described in any one of the first to third aspects.

[0014] In a tenth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method described in any one of the first to third aspects.

[0015] In an eleventh aspect, a computer program product is provided, comprising a program, wherein the program enables a computer to execute the method according to any one of the first to third aspects.

[0016] In a twelfth aspect, a computer program is provided, wherein the computer program enables a computer to execute the method described in any one of the first to third aspects.

[0017] In an embodiment of the present application, a terminal device receives first information, and the first information is used to indicate at least one RAT type and / or at least one CN type. Therefore, when the network where the terminal device is located cannot provide services normally, the terminal device can select a suitable network to serve it according to at least one RAT type and / or at least one CN type, thereby avoiding service interruption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is an example diagram of a wireless communication system used in an embodiment of the present application.

[0019] FIG2 is a schematic flowchart of PLMN selection performed by a terminal device in an embodiment of the present application.

[0020] FIG3 is a schematic flowchart of a communication method provided in one embodiment of the present application.

[0021] FIG4 is a schematic flowchart of a communication method provided in one embodiment of the present application.

[0022] FIG5 is a schematic flowchart of a communication method provided in one embodiment of the present application.

[0023] FIG6 is a schematic flowchart of a communication method provided in one embodiment of the present application.

[0024] FIG7 is a schematic flowchart of a communication method provided in one embodiment of the present application.

[0025] FIG8 is a schematic structural diagram of a communication device provided in one embodiment of the present application.

[0026] FIG9 is a schematic structural diagram of a communication device provided in another embodiment of the present application.

[0027] FIG10 is a schematic structural diagram of a communication device provided in yet another embodiment of the present application.

[0028] FIG11 is a schematic structural diagram of a device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] The technical solution in this application will be described below with reference to the accompanying drawings.

[0030] FIG1 illustrates a wireless communication system 100 used in an embodiment of the present application. The wireless communication system 100 may include a network device 110 and a user equipment (UE) 120. The network device 110 may communicate with the UE 120. The network device 110 may provide communication coverage for a specific geographic area and may communicate with the UE 120 within the coverage area. The UE 120 may access a network (e.g., a wireless network) through the network device 110.

[0031] Figure 1 exemplarily shows a network device and two UEs. Optionally, the wireless communication system 100 may include multiple network devices, and each network device may include a different number of terminal devices within its coverage area, which is not limited in this embodiment of the present application. Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment of the present application.

[0032] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, etc.

[0033] The UE in the embodiments of the present application may also be referred to as a terminal device, an access terminal, a user unit, a user station, a mobile station, a mobile station (MS), a mobile terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. The UE in the embodiments of the present application may refer to a device that provides voice and / or data connectivity to a user and can be used to connect people, objects, and machines, such as a handheld device or an in-vehicle device with wireless connection capabilities. The UE in the embodiments of the present application can be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc. For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and smart home devices communicate without relaying the communication signal through a base station.

[0034] The network device in the embodiments of the present application may be a device for communicating with a UE, and may also be referred to as an access network device or a radio access network device. For example, the network device may be a base station. The network device in the embodiments of the present application may refer to a radio access network (RAN) node (or device) that connects a UE to a wireless network. A base station may broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof.

[0035] In some embodiments, the network device can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile network device, and one or more cells can move according to the location of the mobile network device. In other examples, the helicopter or drone can be configured to act as a device for communicating with another network device. In some embodiments, the network device can refer to a CU or a DU, or the network device can include a CU and a DU, or the network device can also include an AAU.

[0036] It should be understood that network devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water; and can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the network devices and the scenarios in which they are used.

[0037] It should also be understood that all or part of the functions of the network device and UE in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

[0038] The present application proposes a communication method and a communication device that enable a terminal device to select a suitable network for its service, thereby avoiding service interruption. The embodiments of the present application are described in detail below with reference to FIG. 2 to FIG. 7 .

[0039] In some communication systems, when a natural disaster (such as a fire, earthquake, tsunami, etc.) occurs in the area where the public land mobile network (PLMN) network is located and cannot provide services normally, terminal devices in the PLMN network can switch to a pre-configured network to obtain basic services. However, the current switching mechanism is not perfect, and service interruption may occur. For example, some communication systems introduce a minimization of service interruption (MINT) function so that when a natural disaster (such as a fire, earthquake, tsunami, etc.) occurs in the area where the public land mobile network (PLMN) network is located and cannot provide services normally, terminal devices in the PLMN network can access a pre-configured MINT network to obtain basic services. For example, the pre-configured MINT network may include NG-RAN, E-UTRAN, and UTRAN. When the network serving the current network cannot provide services normally, the terminal device can access NG-RAN, E-UTRAN, or UTRAN.

[0040] The PLMN network may include network elements such as the policy control function (PCF), session management function (SMF), access and mobility management function (AMF), authentication server function (AUSF), and unified data management (UDM). When the UE initially accesses, the UE may select a PLMN and notify the network side of the selected PLMN. A schematic flowchart of the UE selecting a PLMN may be shown in FIG2 , as follows:

[0041] S201: The gNB sends a broadcast system information block (SIB) message.

[0042] The SIB message may include the PLMN identifiers (IDs) supported by the gNB. The gNB may be the network device 110 shown in FIG. 1 , for example, a next generation radio access network (NG-RAN).

[0043] If multiple PLMN IDs are broadcast in the SIB message, the UE may perform PLMN ID selection and determine a selected PLMN ID from the multiple PLMN IDs.

[0044] S202: The UE sends a radio resource control (RRC) connection setup request (RRC Connection Setup Request) message to the gNB.

[0045] The message may carry a system architecture evolution (SAE) temporary mobile station identifier (S-TMSI) and an RRC establishment cause value.

[0046] S203: The gNB returns an RRC Connection Setup message to the UE.

[0047] S204: The UE sends an RRC Connection Setup Complete message to the gNB.

[0048] This message may carry the selected PLMN ID and a non access stratum NAS container. The NAS container may include a NAS message - a Registration Request message. The Registration Request message may carry the UE ID (the UE ID may include a 5G globally unique temporary identity (5G-GUTI) or a subscription concealed identifier (SUCI) (when the UE does not have a 5G-GUTI)), UE security capabilities, requested network slice selection assistance information (NSSAI), the last registered tracking area identity (TAI) and other information.

[0049] S205: The gNB sends an Initial UE message to the AMF.

[0050] The gNB may select an AMF based on the selected PLMN ID in the RRC Connection Setup Complete message, and send an Initial UE message to the selected AMF. The message may carry a NAS container, an RRC establishment cause value, and UE location information (ULI) (ULI = PLMN ID + cell ID + (tracking area code, TAC)).

[0051] S206: AMF triggers the authentication process.

[0052] S207: The AMF returns a UE context setup request message to the gNB.

[0053] This message may include NAS container-Registration Accept message, security parameters, accepted (allowed) NSSAI, 5G-S-TMSI. The Registration Accept message may carry parameters such as allowed NSSAI, TAI list, 5G-GUTI, etc.

[0054] S208: The gNB returns a UE context setup response message to the AMF.

[0055] S209: The gNB sends an RRC message to the UE.

[0056] The RRC message may be used to send the NAS container in S207 to the UE.

[0057] S210: The UE sends an RRC message to the gNB.

[0058] The RRC message can be used to send a NAS container, which may include a Registration Complete message. The Registration Complete message can be used to confirm that the 5G-GUTI in S207 is effective.

[0059] S211: The gNB sends an Uplink NAS Transport message to the AMF.

[0060] This message can carry a NAS container.

[0061] In order to support the MINT network, when the network to which the UE belongs is normal, the AMF may send a list of PLMN(s) to be used in Disaster Condition to the UE through a Registration Accept message (such as the Registration Accept message in S207 above); of course, the home PLMN (HPLMN) may also configure a list of PLMN(s) to be used in Disaster Condition to the UE. When the PLMN1 to which the UE currently belongs is unavailable, PLMN2 may broadcast an indication of accessibility for Disaster Roaming service through a SIB message, and may also simultaneously broadcast a list of one or more PLMN(s) with Disaster Condition for which Disaster Roaming service is offered by the available PLMN.

[0062] Through the processing flow in Figure 2 above, a terminal device can select the PLMN network that serves it. However, when a natural disaster (such as a fire, earthquake, or tsunami) occurs in the area where the PLMN network is located and services are no longer available, the terminal devices in that PLMN network may not be able to find an available network, and service interruption may occur. For example, if the disaster area only has a single PLMN 5G network deployed, and this 5G network is unavailable, then the UEs on this network cannot obtain services from other networks, resulting in a long service interruption. In this case, in order to enable the UE to use other network services normally, a 4G or 3G network can be temporarily used. However, the current mechanism cannot smoothly switch the UE to a 4G or 3G network.

[0063] The embodiments of the present application are described in detail below with reference to FIG3 to FIG7 .

[0064] FIG3 is a schematic flow chart of a communication method according to an embodiment of the present application. The method 300 shown in FIG3 may include step S310, which is as follows:

[0065] S310, the terminal device receives first information from the first core network element.

[0066] Optionally, the first core network element may be an AMF or other core network element. The first information may be used to indicate at least one radio access technology (RAT) type and / or at least one core network (CN) type.

[0067] In some embodiments, each of the at least one RAT type may include one or more of the following information: next generation radio access network (NG-RAN), evolved universal mobile telecommunication system terrestrial radio access network (E-UTRAN), or universal mobile telecommunication system terrestrial radio access network (UTRAN). Optionally, the RAT type may represent NG-RAN, E-UTRAN, and UTRAN using different values, for example, 1 may represent NG-RAN, 2 may represent E-UTRAN, and 3 may represent UTRAN.

[0068] Optionally, each of the at least one RAT type may be associated with a PLMN. Optionally, the first information may be used to indicate the PLMN associated with each of the at least one RAT type.

[0069] Optionally, each of the at least one RAT type may be associated with one PLMN; or, each of the at least one RAT type may be associated with multiple PLMNs. For example, the PLMNs associated with each of the at least one RAT type may be the same, i.e., each RAT type may be associated with the same PLMN (one or more PLMNs); or, the PLMNs associated with each RAT type may be different (e.g., partially or completely different), i.e., each RAT type may be associated with at least one of the multiple PLMNs (in this case, it is not limited to each RAT type being associated with these multiple PLMNs).

[0070] Optionally, each RAT in at least one RAT type may be associated with one PLMN; or, each RAT in at least one RAT type may be associated with multiple PLMNs. For example, at least one RAT type may include one or more RATs, and the PLMNs associated with these one or more RATs may all be the same (all associated with one PLMN); or, the PLMNs associated with these one or more RATs may be different (e.g., partially different or completely different), that is, each of the one or more RATs may be associated with at least one of the multiple PLMNs (in this case, it is not limited to each RAT being associated with these multiple PLMNs).

[0071] Optionally, the first information may also be used to indicate a PLMN associated with at least one RAT type. Optionally, at least one RAT type may be associated with one or more PLMNs.

[0072] In some embodiments, each of the at least one CN type may include a fifth generation core network (5GC) and / or an evolved packet core network (EPC). For example, different values ​​may be used in the CN type to represent 5GC and EPC, for example, 1 may represent 5GC and 2 may represent EPC.

[0073] Optionally, each of the at least one CN type may be associated with a PLMN. Optionally, the first information may be used to indicate the PLMN associated with each of the at least one CN type.

[0074] Optionally, each CN type in at least one CN type may be associated with one PLMN; or, each CN type in at least one CN type may be associated with multiple PLMNs. For example, the PLMNs associated with each CN type in at least one CN type may be the same, i.e., each CN type may be associated with the same PLMN (one or more PLMNs); or, the PLMNs associated with each CN type may be different (e.g., partially different or completely different), i.e., each CN type may be associated with at least one of the multiple PLMNs (in this case, it is not limited to each CN type being associated with these multiple PLMNs).

[0075] Optionally, each CN in at least one CN type may be associated with one PLMN; or, each CN in at least one CN type may be associated with multiple PLMNs. For example, at least one CN type may include one or more CNs, and the PLMNs associated with these one or more CNs may all be the same (all associated with one PLMN); or, the PLMNs associated with these one or more CNs may be different (e.g., partially different or completely different), that is, each CN in the one or more CNs may be associated with at least one of the multiple PLMNs (in this case, it is not limited to each CN being associated with these multiple PLMNs).

[0076] Optionally, the first information may also be used to indicate a PLMN associated with at least one CN type. Optionally, at least one CN type may be associated with one or more PLMNs.

[0077] Before S310, the terminal device may send a registration request message to the first core network element.

[0078] Optionally, the registration request message may carry one or more of the following information: 5G globally unique temporary identity (5G-GUTI), UE security capabilities, or requested network slice selection assistance information (NSSAI).

[0079] In the present application, the method 300 can be implemented in a variety of ways, which are described in detail below with reference to FIG. 4 to FIG. 7 .

[0080] Method 1: The first information may be carried in a registration acceptance message.

[0081] For example, the first core network element may send a registration acceptance message to the terminal device, where the registration acceptance message may include the first information; further, the terminal device may send a registration completion message to the first core network element.

[0082] For example, taking the first core network element as AMF as an example, the method in the first approach may be as shown in method 400 in FIG. 4 , including the following steps:

[0083] S410, the UE sends a registration request message to the AMF through the NG-RAN.

[0084] The registration request message may carry 5G-GUTI, UE security capabilities, requested NSSAI, etc.

[0085] S420: AMF sends a registration accept message to the UE via NG-RAN.

[0086] The registration accept message may carry the first information. The registration accept message may also carry the new 5G-GUTI of the UE.

[0087] S430, the UE sends a registration complete message to the AMF through the NG-RAN.

[0088] The registration completion message can be used to confirm that the UE's new 5G-GUTI is effective.

[0089] Method 2: The first information may be carried in a user equipment configuration upgrade message.

[0090] For example, after the terminal device completes registration on the first core network element, the first core network element may send a user equipment configuration upgrade message to the terminal device, where the user equipment configuration upgrade message may include the first information. Further, the terminal device may send a response message to the first core network element for the user equipment configuration upgrade message.

[0091] For example, taking the first core network element as an AMF as an example, the method in the second manner may be as shown in method 500 in FIG. 5 , including the following steps:

[0092] S510, AMF sends a user equipment configuration update (such as UE Configuration Update) message to the UE through NG-RAN.

[0093] After the UE completes registration with the AMF, the AMF may send a user equipment configuration upgrade message to the UE through the NG-RAN. The user equipment configuration upgrade message may include the first information. The user equipment configuration upgrade message may also carry the UE's new 5G-GUTI.

[0094] S520: The UE sends a response message to the AMF through the NG-RAN.

[0095] The UE may send a UE configuration update ACK message to the AMF via the NG-RAN. The ACK message may be used to confirm that the new 5G-GUTI of the UE is effective.

[0096] Both the above-mentioned method 1 and method 2 can be considered to be sent by the current serving PLMN (visited PLMN, VPLMN) to which the UE belongs to the UE.

[0097] Method three: The first information can be carried in a registration acceptance message. Optionally, the first information can be sent by the first core network element based on the user data of the terminal device received by the first core network element from the second core network element. Optionally, the user data can include the contract data of the terminal device, and can also include other data of the terminal device. Optionally, the second core network element can be a UDM or other core network element.

[0098] For example, the first core network element may send a second message to the second core network element. The second message may be used to request user data of the terminal device, and the second message may be carried in a subscription data acquisition (such as Nudm_SDM_Get) message. The second core network element may send the user data of the terminal device to the first core network element in response to the second message. The user data of the terminal device may include the first information. The first core network element may send a downlink NAS transmission message to the terminal device. The downlink NAS transmission message may include the first information. Furthermore, the terminal device may send a registration completion message to the first core network element.

[0099] For example, taking the first core network element as AMF and the second core network element as UDM as an example, the method in the third approach may be as shown in method 600 in FIG. 6 , including the following steps:

[0100] S610: The UE sends a registration request message to the AMF through the NG-RAN.

[0101] The registration request message may carry 5G-GUTI, UE security capabilities, requested NSSAI, etc.

[0102] S620: AMF sends a contract data acquisition message to UDM.

[0103] The subscription data acquisition message may be a Nudm_SDM_Get message. The Nudm_SDM_Get message may be used to obtain user data of the UE.

[0104] S630: UDM sends a response message to AMF.

[0105] The response message may carry the UE's user data. The user data may include the first information. The user data may also carry the UE's new 5G-GUTI. For example, the first information may be carried in the response message as a disaster container and sent to the AMF.

[0106] S640: The AMF sends a registration accept message to the UE.

[0107] The registration accept message may carry the first information. The registration accept message may also carry the UE's new 5G-GUTI. For example, the first information may be carried in the registration accept message as a disaster container and sent to the UE. Optionally, the AMF may not process the disaster container and directly transmit it to the UE.

[0108] S650: The UE sends a registration completion message to the AMF.

[0109] The registration completion message can be used to confirm that the UE's new 5G-GUTI is effective.

[0110] Mode 4: The first information may be carried in a downlink NAS transmission message. Optionally, the first information may be sent by the first core network element based on user data of the terminal device received by the first core network element from the second core network element.

[0111] For example, after user data in the second core network element is updated, the second core network element may send the user data of the terminal device to the first core network element, where the user data may include the first information; the first core network element may send a downlink NAS transmission message to the terminal device, where the downlink NAS transmission message may include the first information. Furthermore, the terminal device may send an uplink NAS transmission message to the first core network element, where the uplink NAS transmission message may carry confirmation information; and the first core network element may send the confirmation information to the second core network element.

[0112] For example, taking the first core network element as AMF and the second core network element as UDM as an example, the method in the fourth mode may be as shown in method 700 in FIG. 7 , including the following steps:

[0113] S710, UDM sends user data to AMF.

[0114] When user data in the UDM is updated, the UDM may send the user data to the AMF. The user data may include the first information. The user data may also carry the new 5G-GUTI of the UE. For example, the first information may be carried as a disaster container in a response message sent to the AMF.

[0115] S720: The AMF sends a downlink NAS transmission message to the UE.

[0116] The downlink NAS transmission message may carry the first information. The downlink NAS transmission message may also carry the UE's new 5G-GUTI. For example, the first information may be carried as a disaster container in the downlink NAS transmission message and sent to the UE. Optionally, the AMF may not perform any processing on the disaster container and directly transparently transmit it to the UE.

[0117] S730: The UE sends an uplink NAS transfer message to the AMF.

[0118] The uplink NAS transmission message may carry confirmation information. The confirmation message may be used to confirm that the new 5G-GUTI of the UE is effective.

[0119] S740: The AMF sends a confirmation message to the UDM. The confirmation message may be a Nudm_SDM_Info_Request message.

[0120] The above-mentioned method 3 and method 4 can both be considered to be sent by the current home PLMN (HPLMN) to which the UE belongs to the UE.

[0121] In an embodiment of the present application, a terminal device receives first information, and the first information is used to indicate at least one RAT type and / or at least one CN type. Therefore, when the network where the terminal device is located cannot provide services normally, the terminal device can select a suitable network to serve it according to at least one RAT type and / or at least one CN type, thereby avoiding service interruption.

[0122] The method embodiment of the present application is described in detail above in conjunction with Figures 1 to 7 . The device embodiment of the present application is described in detail below in conjunction with Figures 8 to 11 . It should be understood that the description of the method embodiment corresponds to the description of the device embodiment. Therefore, for portions not described in detail, reference can be made to the above method embodiment.

[0123] FIG8 is a schematic structural diagram of a communication device provided in an embodiment of the present application. As shown in FIG8 , the device 800 includes a receiving unit 810, which is specifically as follows:

[0124] The receiving unit 810 is configured to receive first information from a first core network element, where the first information is used to indicate at least one radio access technology RAT type and / or at least one core network CN type.

[0125] Optionally, each RAT type in the at least one RAT type includes one or more of the following information: next generation radio access network NG-RAN, evolved universal mobile telecommunications system terrestrial radio access network E-UTRAN or universal mobile telecommunications system terrestrial radio access network UTRAN.

[0126] Optionally, the first information is further used to indicate one or more public land mobile networks PLMN associated with each RAT type in the at least one RAT type.

[0127] Optionally, the first information is further used to indicate one or more public land mobile networks PLMN associated with the at least one RAT type.

[0128] Optionally, each CN type in the at least one CN type includes a fifth generation core network 5GC and / or an evolved packet core network EPC.

[0129] Optionally, the first information is further used to indicate one or more public land mobile networks PLMN associated with each CN type in the at least one CN type.

[0130] Optionally, the first information is further used to indicate one or more public land mobile networks PLMN associated with the at least one CN type.

[0131] Optionally, the receiving unit 810 is specifically configured to: receive first information from the first core network element after completing registration on the first core network element.

[0132] Optionally, the first information is carried in a user equipment configuration upgrade message.

[0133] Optionally, the apparatus 800 further includes a sending unit 820, configured to send a response message of the user equipment configuration upgrade message to the first core network element.

[0134] Optionally, the first information is sent by the first core network element based on user data of the device received by the first core network element from the second core network element.

[0135] Optionally, the first information is sent by the first core network element based on user data of the device received by the first core network element from the second core network element after user data in the first core network element is updated.

[0136] Optionally, the first information is carried in a downlink non-access stratum (NAS) transmission message.

[0137] Optionally, the apparatus 800 further includes a sending unit 820, configured to: send an uplink non-access stratum (NAS) transmission message to the first core network element, where the uplink NAS transmission message carries confirmation information.

[0138] Optionally, the receiving unit 810 is further configured to: receive a registration acceptance message from the first core network element.

[0139] Optionally, the first information is carried in a registration acceptance message.

[0140] Optionally, the apparatus 800 further includes a sending unit 820, configured to send a registration request message to the first core network element.

[0141] Optionally, the registration request message carries one or more of the following information: a globally unique temporary identifier 5G-GUTI, security capabilities of the user equipment UE, or requested network slice selection assistance information NSSAI.

[0142] Optionally, the apparatus 800 further includes a sending unit 820, configured to send a registration completion message to the first core network element.

[0143] FIG9 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device 900 in FIG9 includes a sending unit 910, which is specifically as follows:

[0144] The sending unit 910 is used to send first information to the terminal device, where the first information is used to indicate at least one radio access technology RAT type and / or at least one core network CN type.

[0145] Optionally, each RAT type in the at least one RAT type includes one or more of the following information: next generation radio access network NG-RAN, evolved universal mobile telecommunications system terrestrial radio access network E-UTRAN or universal mobile telecommunications system terrestrial radio access network UTRAN.

[0146] Optionally, the first information is further used to indicate one or more public land mobile networks PLMN associated with each RAT type in the at least one RAT type.

[0147] Optionally, the first information is further used to indicate one or more public land mobile networks PLMN associated with the at least one RAT type.

[0148] Optionally, each CN type in the at least one CN type includes a fifth generation core network 5GC and / or an evolved packet core network EPC.

[0149] Optionally, the first information is further used to indicate one or more public land mobile networks PLMN associated with each CN type in the at least one CN type.

[0150] Optionally, the first information is further used to indicate one or more public land mobile networks PLMN associated with the at least one CN type.

[0151] Optionally, the sending unit 910 is specifically configured to: send the first information to the terminal device after the terminal device completes registration on the apparatus.

[0152] Optionally, the first information is carried in a user equipment configuration upgrade message.

[0153] Optionally, the apparatus 900 further includes a receiving unit 920, configured to receive a response message of the user equipment configuration upgrade message from the terminal device.

[0154] Optionally, the first information is sent by the apparatus based on user data of the terminal device received by the apparatus from the second core network element.

[0155] Optionally, the sending unit 910 is also used to: send second information to the second core network element, the second information is used to request user data of the terminal device; the device 900 also includes a receiving unit 920, used to: receive user data of the terminal device from the second core network element, the user data of the terminal device includes the first information.

[0156] Optionally, the second information is carried in a subscription data acquisition message, and the user data of the terminal device is carried in a response message to the subscription data acquisition message.

[0157] Optionally, the first information is sent by the device based on the user data of the terminal device received by the device from the second core network element after the user data of the terminal device is updated.

[0158] Optionally, the first information is carried in a downlink non-access stratum (NAS) transmission message.

[0159] Optionally, the apparatus 900 further includes a receiving unit 920, configured to: receive an uplink non-access layer NAS transmission message from the terminal device, wherein the uplink NAS transmission message carries confirmation information; and the sending unit 910 is further configured to: send the confirmation information to the second core network element.

[0160] Optionally, the sending unit 910 is further configured to send a registration acceptance message to the terminal device.

[0161] Optionally, the first information is carried in a registration acceptance message.

[0162] Optionally, the apparatus 900 further includes a receiving unit 920, configured to receive a registration request message from the terminal device.

[0163] Optionally, the registration request message carries one or more of the following information: a globally unique temporary identifier 5G-GUTI, user equipment UE security capabilities, or requested network slice selection assistance information NSSAI.

[0164] Optionally, the apparatus 900 further includes a receiving unit 920, configured to receive a registration completion message from the terminal device.

[0165] FIG10 is a schematic structural diagram of a communication device provided in an embodiment of the present application. As shown in FIG10 , the device 1000 includes a sending unit 1010, which is specifically as follows:

[0166] The sending unit 1010 is used to: after the terminal device completes registration on the first core network element, send the user data of the terminal device to the first core network element, where the user data includes first information, and the first information is used to indicate at least one radio access technology RAT type and / or at least one core network CN type.

[0167] Optionally, the device 1000 also includes a receiving unit 1020, which is used to: receive second information from the first core network element, and the second information is used to request user data of the terminal device; wherein the sending unit 1010 is specifically used to: send user data of the terminal device to the first core network element in response to the second information.

[0168] Optionally, the second information is carried in a subscription data acquisition message, and the user data of the terminal device is carried in a response message to the subscription data acquisition message.

[0169] Optionally, the sending unit 1010 is specifically used to: after the user data of the terminal device is updated, send the user data of the terminal device to the first core network element.

[0170] Optionally, the apparatus 1000 further includes a receiving unit 1020, configured to: receive the confirmation information from the first core network element.

[0171] FIG11 is a schematic diagram of the structure of an apparatus provided in one embodiment of the present application. The dotted lines in FIG11 indicate that the unit or module is optional. Apparatus 1100 may be used to implement the method described in the above method embodiment. Apparatus 1100 may be a chip or a communication device.

[0172] The device 1100 may include one or more processors 1110. The processor 1110 may support the device 1100 to implement the method described in the method embodiment above. The processor 1110 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0173] The apparatus 1100 may further include one or more memories 1120. The memories 1120 store programs that can be executed by the processor 1110, causing the processor 1110 to perform the methods described in the above method embodiments. The memories 1120 may be independent of the processor 1110 or integrated into the processor 1110.

[0174] The apparatus 1100 may further include a transceiver 1130. The processor 1110 may communicate with other devices or chips via the transceiver 1130. For example, the processor 1110 may transmit and receive data with other devices or chips via the transceiver 1130.

[0175] The present invention also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to the communication device provided in the present invention, and the program enables a computer to execute the method performed by the communication device in each embodiment of the present invention.

[0176] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the communication device provided in the present application, and the program causes a computer to execute the method performed by the communication device in each embodiment of the present application.

[0177] The embodiments of the present application also provide a computer program. The computer program can be applied to the communication device provided in the embodiments of the present application, and the computer program enables a computer to execute the method performed by the communication device in each embodiment of the present application.

[0178] It should be understood that in the embodiments of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should also be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0179] It should be understood that the term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0180] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0181] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0182] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0183] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0184] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0185] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: include: The terminal device receives first information from a first core network element, where the first information is used to indicate at least one radio access technology RAT type and / or at least one core network CN type.

2. The method according to claim 1, characterized in that Each RAT type in the at least one RAT type includes one or more of the following information: next generation radio access network NG-RAN, evolved universal mobile telecommunications system terrestrial radio access network E-UTRAN or universal mobile telecommunications system terrestrial radio access network UTRAN.

3. The method according to claim 1 or 2, characterized in that The first information is further used to indicate one or more public land mobile networks PLMN associated with each RAT type in the at least one RAT type.

4. The method according to claim 1 or 2, characterized in that The first information is further used to indicate one or more public land mobile networks PLMN associated with the at least one RAT type.

5. The method according to any one of claims 1 to 4, characterized in that Each CN type in the at least one CN type includes a fifth generation core network 5GC and / or an evolved packet core network EPC.

6. The method according to any one of claims 1 or 5, characterized in that The first information is further used to indicate one or more public land mobile networks PLMN associated with each CN type in the at least one CN type.

7. The method according to claim 1 or 5, characterized in that The first information is further used to indicate one or more public land mobile networks PLMN associated with the at least one CN type.

8. The method according to any one of claims 1 to 7, characterized in that The terminal device receives first information from the first core network element, including: After completing registration on the first core network element, the terminal device receives first information from the first core network element.

9. The method according to claim 8, characterized in that The first information is carried in a user equipment configuration upgrade message.

10. The method according to claim 9, characterized in that The method further comprises: The terminal device sends a response message of the user equipment configuration upgrade message to the first core network element.

11. The method according to any one of claims 1 to 7, characterized in that The first information is sent by the first core network element based on the user data of the terminal device received by the first core network element from the second core network element.

12. The method according to claim 11, characterized in that The first information is sent by the first core network element based on the user data of the terminal device received by the first core network element from the second core network element after the user data in the second core network element is updated.

13. The method according to claim 12, characterized in that The first information is carried in a downlink non-access stratum (NAS) transmission message.

14. The method according to claim 12 or 13, characterized in that The method further comprises: The terminal device sends an uplink non-access layer NAS transmission message to the first core network element, and the uplink NAS transmission message carries confirmation information.

15. The method according to any one of claims 1 to 7 or 10, characterized in that The method further comprises: The terminal device receives a registration acceptance message from the first core network element.

16. The method according to claim 15, characterized in that The first information is carried in a registration acceptance message.

17. The method according to any one of claims 1 to 16, characterized in that The method further comprises: The terminal device sends a registration request message to the first core network element.

18. The method according to claim 17, characterized in that The registration request message carries one or more of the following information: a globally unique temporary identifier 5G-GUTI, user equipment UE security capabilities, or requested network slice selection assistance information NSSAI.

19. The method according to any one of claims 1 to 18, characterized in that The method further comprises: The terminal device sends a registration completion message to the first core network element.

20. A communication method, characterized in that: include: The first core network element sends first information to the terminal device, where the first information is used to indicate at least one radio access technology RAT type and / or at least one core network CN type.

21. The method according to claim 20, characterized in that Each RAT type in the at least one RAT type includes one or more of the following information: next generation radio access network NG-RAN, evolved universal mobile telecommunications system terrestrial radio access network E-UTRAN or universal mobile telecommunications system terrestrial radio access network UTRAN.

22. The method according to claim 20 or 21, characterized in that The first information is further used to indicate one or more public land mobile networks PLMN associated with each RAT type in the at least one RAT type.

23. The method according to claim 20 or 21, characterized in that The first information is further used to indicate one or more public land mobile networks PLMN associated with the at least one RAT type.

24. The method according to any one of claims 20 to 23, characterized in that Each CN type in the at least one CN type includes a fifth generation core network 5GC and / or an evolved packet core network EPC.

25. The method according to claim 20 or 24, characterized in that The first information is further used to indicate one or more public land mobile networks PLMN associated with each CN type in the at least one CN type.

26. The method according to claim 20 or 24, characterized in that The first information is further used to indicate one or more public land mobile networks PLMN associated with the at least one CN type.

27. The method according to any one of claims 20 to 26, characterized in that The first core network element sending first information to the terminal device includes: After the terminal device completes registration on the first core network element, the first core network element sends the first information to the terminal device.

28. The method according to claim 27, characterized in that The first information is carried in a user equipment configuration upgrade message.

29. The method according to claim 28, characterized in that The method further comprises: The first core network element receives a response message of the user equipment configuration upgrade message from the terminal device.

30. The method according to any one of claims 20 to 26, characterized in that The first information is sent by the first core network element based on the user data of the terminal device received by the first core network element from the second core network element.

31. The method according to claim 30, wherein The method further comprises: The first core network element sends second information to the second core network element, where the second information is used to request user data of the terminal device; The first core network element receives user data of the terminal device from the second core network element, where the user data of the terminal device includes the first information.

32. The method according to claim 31, characterized in that The second information is carried in a subscription data acquisition message, and the user data of the terminal device is carried in a response message to the subscription data acquisition message.

33. The method according to claim 30, wherein The first information is sent by the first core network element based on the user data of the terminal device received by the first core network element from the second core network element after the user data of the terminal device is updated.

34. The method according to claim 33, wherein The first information is carried in a downlink non-access stratum (NAS) transmission message.

35. The method according to claim 33 or 34, characterized in that The method further comprises: The first core network element receives an uplink non-access stratum (NAS) transmission message from the terminal device, where the uplink NAS transmission message carries confirmation information; The first core network element sends the confirmation information to the second core network element.

36. The method according to any one of claims 20 to 30 or any one of claims 33 to 35, characterized in that The method further comprises: The first core network element sends a registration acceptance message to the terminal device.

37. The method according to claim 36, wherein The first information is carried in a registration acceptance message.

38. The method according to any one of claims 20 to 37, characterized in that The method further comprises: The first core network element receives a registration request message from the terminal device.

39. The method according to claim 38, characterized in that The registration request message carries one or more of the following information: a globally unique temporary identifier 5G-GUTI, user equipment UE security capabilities, or requested network slice selection assistance information NSSAI.

40. The method according to any one of claims 20 to 39, characterized in that The method further comprises: The first core network element receives a registration completion message from the terminal device.

41. A communication method, characterized in that: include: After the terminal device completes registration on the access and first core network element, the second core network element sends the user data of the terminal device to the first core network element, where the user data includes first information, and the first information is used to indicate at least one radio access technology RAT type and / or at least one core network CN type.

42. The method according to claim 41, wherein The method further comprises: The second core network element receives second information from the first core network element, where the second information is used to request user data of the terminal device; The second core network element sending the user data of the terminal device to the first core network element includes: The second core network element sends the user data of the terminal device to the first core network element in response to the second information.

43. The method according to claim 42, characterized in that The second information is carried in a subscription data acquisition message, and the user data of the terminal device is carried in a response message to the subscription data acquisition message.

44. The method according to claim 41, wherein The second core network element sending the user data of the terminal device to the first core network element includes: After the user data of the terminal device is updated, the second core network element sends the user data of the terminal device to the first core network element.

45. The method according to claim 44, wherein The method further comprises: The second core network element receives the confirmation information from the first core network element.

46. ​​A communication device, characterized in that include: The receiving unit is configured to receive first information from a first core network element, where the first information is used to indicate at least one radio access technology RAT type and / or at least one core network CN type.

47. The device according to claim 46, characterized in that Each RAT type in the at least one RAT type includes one or more of the following information: next generation radio access network NG-RAN, evolved universal mobile telecommunications system terrestrial radio access network E-UTRAN or universal mobile telecommunications system terrestrial radio access network UTRAN.

48. The device according to claim 46 or 47, characterized in that The first information is further used to indicate one or more public land mobile networks PLMN associated with each RAT type in the at least one RAT type.

49. The device according to claim 46 or 47, characterized in that The first information is further used to indicate one or more public land mobile networks PLMN associated with the at least one RAT type.

50. The device according to any one of claims 46 to 49, characterized in that Each CN type in the at least one CN type includes a fifth generation core network 5GC and / or an evolved packet core network EPC.

51. The device according to claim 46 or 50, characterized in that The first information is further used to indicate one or more public land mobile networks PLMN associated with each CN type in the at least one CN type.

52. The device according to claim 46 or 50, characterized in that The first information is further used to indicate one or more public land mobile networks PLMN associated with the at least one CN type.

53. The device according to any one of claims 46 to 52, characterized in that The receiving unit is specifically configured to: after completing registration on the first core network element, receive first information from the first core network element.

54. The device according to claim 53, characterized in that The first information is carried in a user equipment configuration upgrade message.

55. The device according to claim 54, characterized in that The apparatus further includes a sending unit configured to send a response message of the user equipment configuration upgrade message to the first core network element.

56. The device according to any one of claims 46 to 52, characterized in that The first information is sent by the first core network element based on user data of the device received by the first core network element from the second core network element.

57. The device according to claim 56, characterized in that The first information is sent by the first core network element based on the user data of the device received by the first core network element from the second core network element after the user data in the second core network element is updated.

58. The device according to claim 57, characterized in that The first information is carried in a downlink non-access stratum (NAS) transmission message.

59. The device according to claim 57 or 58, characterized in that The device further includes a sending unit, configured to send an uplink non-access stratum (NAS) transmission message to the first core network element, wherein the uplink NAS transmission message carries confirmation information.

60. The device according to any one of claims 46 to 52 or 14, characterized in that The receiving unit is further configured to: receive a registration acceptance message from the first core network element.

61. The device according to claim 60, characterized in that The first information is carried in a registration acceptance message.

62. The device according to any one of claims 46 to 61, characterized in that The device further includes a sending unit, configured to send a registration request message to the first core network element.

63. The device according to claim 62, characterized in that The registration request message carries one or more of the following information: a globally unique temporary identifier 5G-GUTI, user equipment UE security capabilities, or requested network slice selection assistance information NSSAI.

64. The device according to any one of claims 46 to 63, characterized in that The device further includes a sending unit, configured to send a registration completion message to the first core network element.

65. A communication device, characterized in that include: A sending unit is used to send first information to a terminal device, where the first information is used to indicate at least one radio access technology RAT type and / or at least one core network CN type.

66. The device according to claim 65, characterized in that Each RAT type in the at least one RAT type includes one or more of the following information: next generation radio access network NG-RAN, evolved universal mobile telecommunications system terrestrial radio access network E-UTRAN or universal mobile telecommunications system terrestrial radio access network UTRAN.

67. The device according to claim 65 or 66, characterized in that The first information is further used to indicate one or more public land mobile networks PLMN associated with each RAT type in the at least one RAT type.

68. The device according to claim 65 or 66, characterized in that The first information is further used to indicate one or more public land mobile networks PLMN associated with the at least one RAT type.

69. The device according to any one of claims 65 to 68, characterized in that Each CN type in the at least one CN type includes a fifth generation core network 5GC and / or an evolved packet core network EPC.

70. The device according to any one of claims 65 to 69, characterized in that The first information is further used to indicate one or more public land mobile networks PLMN associated with each CN type in the at least one CN type.

71. The device according to claim 65 or 69, characterized in that The first information is further used to indicate one or more public land mobile networks PLMN associated with the at least one CN type.

72. The device according to any one of claims 65 to 71, characterized in that The sending unit is specifically configured to send the first information to the terminal device after the terminal device completes registration on the apparatus.

73. The device according to claim 72, characterized in that The first information is carried in a user equipment configuration upgrade message.

74. The device according to claim 73, characterized in that The apparatus further includes a receiving unit configured to receive a response message of a user equipment configuration upgrade message from the terminal device.

75. The device according to any one of claims 65 to 71, characterized in that The first information is sent by the apparatus based on user data of the terminal device received by the apparatus from the second core network element.

76. The device according to claim 75, characterized in that The sending unit is further configured to: send second information to the UDM, where the second information is used to request user data of the terminal device; The apparatus further includes a receiving unit configured to receive user data of the terminal device from the second core network element, wherein the user data of the terminal device includes the first information.

77. The device according to claim 76, characterized in that The second information is carried in a subscription data acquisition message, and the user data of the terminal device is carried in a response message to the subscription data acquisition message.

78. The device according to claim 75, characterized in that The first information is sent by the device based on the user data of the terminal device received by the device from the second core network element after the user data of the terminal device is updated.

79. The device according to claim 78, characterized in that The first information is carried in a downlink non-access stratum (NAS) transmission message.

80. The device according to claim 78 or 79, characterized in that The apparatus further includes a receiving unit configured to: receive an uplink non-access layer (NAS) transmission message from the terminal device, wherein the uplink NAS transmission message carries confirmation information; and the sending unit is further configured to: send the confirmation information to the second core network element.

81. The device according to any one of claims 65 to 71 or any one of claims 74 to 76, characterized in that The sending unit is further configured to send a registration acceptance message to the terminal device.

82. The device according to claim 81, characterized in that The first information is carried in a registration acceptance message.

83. The device according to any one of claims 65 to 82, characterized in that The apparatus further includes a receiving unit configured to receive a registration request message from the terminal device.

84. The device according to claim 83, characterized in that The registration request message carries one or more of the following information: a globally unique temporary identifier 5G-GUTI, user equipment UE security capabilities, or requested network slice selection assistance information NSSAI.

85. The device according to any one of claims 65 to 84, characterized in that The apparatus further includes a receiving unit configured to receive a registration completion message from the terminal device.

86. A communication device, characterized in that include: A sending unit is used to: after the terminal device completes registration on the first core network element, send the user data of the terminal device to the first core network element, the user data includes first information, and the first information is used to indicate at least one radio access technology RAT type and / or at least one core network CN type.

87. The device according to claim 86, characterized in that The apparatus further includes a receiving unit, configured to: receive second information from the AMF, where the second information is used to request user data of the terminal device; The sending unit is specifically used to send user data of the terminal device to the first core network element in response to the second information.

88. The device according to claim 87, characterized in that The second information is carried in a subscription data acquisition message, and the user data of the terminal device is carried in a response message to the subscription data acquisition message.

89. The device according to claim 86, characterized in that The sending unit is specifically used to: after the user data of the terminal device is updated, send the user data of the terminal device to the first core network element.

90. The device according to claim 89, characterized in that The device further includes a receiving unit configured to receive the confirmation information from the first core network element.

91. A communication device, characterized in that The communication device comprises a memory, a transceiver and a processor, wherein the memory is used to store programs, the processor transmits and receives data through the transceiver, and the processor is used to call the program in the memory so that the communication device executes the method as described in any one of claims 1 to 19.

92. A communication device, characterized in that It includes a memory, a transceiver and a processor, the memory is used to store programs, the processor sends and receives data through the transceiver, and the processor is used to call the program in the memory so that the communication device executes the method as described in any one of claims 20 to 40.

93. A communication device, characterized in that It includes a memory, a transceiver and a processor, the memory is used to store programs, the processor sends and receives data through the transceiver, and the processor is used to call the program in the memory so that the communication device executes the method as described in any one of claims 41 to 45.

94. A communication device, characterized in that The device comprises a processor configured to call a program from a memory so as to enable the communication device to execute the method according to any one of claims 1 to 19.

95. A communication device, characterized in that The device comprises a processor configured to call a program from a memory so as to cause the communication device to execute the method according to any one of claims 20 to 40.

96. A communication device, characterized in that The device comprises a processor configured to call a program from a memory so as to cause the communication device to execute the method according to any one of claims 41 to 45.

97. A chip, characterized in that The device comprises a processor configured to call a program from a memory so that a device equipped with the chip executes the method according to any one of claims 1 to 19.

98. A chip, characterized in that The device comprises a processor configured to call a program from a memory so that a device equipped with the chip executes the method according to any one of claims 20 to 40.

99. A chip, characterized in that The device comprises a processor configured to call a program from a memory so that a device equipped with the chip executes the method according to any one of claims 41 to 45.

100. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 1 to 19.

101. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 20 to 40.

102. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 41 to 45.

103. A computer program product, characterized in that The method comprises a program for causing a computer to execute the method according to any one of claims 1 to 19.

104. A computer program product, characterized in that A program is included, the program causing a computer to execute the method according to any one of claims 20 to 40.

105. A computer program product, characterized in that A program is included, which causes a computer to execute the method according to any one of claims 41 to 45.

106. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 1 to 19.

107. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 20 to 40.

108. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 41 to 45.

Images