WO2023011078A1 - 去注册的方法和通信装置 - Google Patents

去注册的方法和通信装置 Download PDF

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Publication number
WO2023011078A1
WO2023011078A1 PCT/CN2022/103609 CN2022103609W WO2023011078A1 WO 2023011078 A1 WO2023011078 A1 WO 2023011078A1 CN 2022103609 W CN2022103609 W CN 2022103609W WO 2023011078 A1 WO2023011078 A1 WO 2023011078A1
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WIPO (PCT)
Prior art keywords
network element
online account
account opening
mobility management
management network
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PCT/CN2022/103609
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English (en)
French (fr)
Inventor
朱强华
吴问付
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华为技术有限公司
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Publication of WO2023011078A1 publication Critical patent/WO2023011078A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/06—De-registration or detaching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/14—Mobility data transfer between corresponding nodes

Definitions

  • the present application relates to the technical field of communications, and in particular to a de-registration method and a communications device.
  • the standard supports terminal devices to use the credentials of the default credential server (DCS) to perform SNPN onboarding registration in the Onboarding standalone non-public network (ON-SNPN) .
  • DCS credential server
  • ON-SNPN Onboarding standalone non-public network
  • the terminal device obtains initial access on the ON-SNPN, and the AMF network element will start the de-registration timer. After the de-registration timer expires, the terminal device will be triggered to register from the ON-SNPN to prevent the terminal device from infinitely resident Stay ON-SNPN.
  • This application provides a de-registration method and communication device, which can make the terminal equipment that completes online account opening and registration in ON-SNPN, after the location movement causes AMF redirection, the new AMF starts the de-registration timer, thereby preventing the terminal Unlimited residency on ON-SNPN.
  • a de-registration method is provided, which can be performed by a network device, or can also be performed by a chip or a circuit used for a network device, which is not limited in this application.
  • a de-registration method is provided, which can be performed by a network device, or can also be performed by a chip or a circuit used for a network device, which is not limited in this application.
  • the following is represented by The implementation of the second mobility management network element is taken as an example for description.
  • the method may include: the second mobility management network element receives a first message sent by the first mobility management network element, the first message carries first information, and the first information is online account opening (onboarding) indication information or the first Time information of the first de-registration timer on the mobility management network element; the second mobility management network element starts the second de-registration timer according to the first information; wherein, when the second de-registration timer expires, trigger the de-registration timer The registration process deregisters the terminal device from the network.
  • the online account opening instruction information is used to indicate that the terminal device is registering for online account opening, or is used to indicate that the terminal device is a terminal device registered for online account opening;
  • the time information of the first de-registration timer on the first mobility management network element It is used to indicate the elapsed time or remaining time of the first de-registration timer on the first mobility management network element.
  • the first message may specifically be a UE context acquisition response message, or a UE context establishment request message, or an N2 message notification confirmation message, which is not limited in this embodiment of the present application.
  • the time information of the first de-registration timer or the online account opening indication information on the first mobility management network element is obtained from the first mobility management network element by the second mobility management network element, so that After the redirection of the mobility management network element occurs, the second mobility management network element can still start the de-registration timer.
  • the de-registration timer expires, the de-registration process is triggered, and the registration information of the terminal device is deregistered on the ON-SNPN, and Triggers PDU session release, thus preventing end-devices from indefinitely camping on ON-SNPN.
  • the method further includes: the second mobility management network element starts the second de-registration according to the remaining time of the first de-registration timer on the first mobility management network element timer.
  • the method further includes: when the time information of the first de-registration timer on the first mobility management network element is used to indicate that the first mobility management network element When the time of the first de-registration timer has passed, determine the first de-registration timing on the first mobility management network element according to the time information of the first de-registration timer on the first mobility management network element and the local configuration the remaining time of the device. Specifically, the remaining time of the de-registration timer is determined according to the time information of the first de-registration timer on the first mobility management network element and the initial value of the de-registration timer in the local configuration, and the initial value is the value of the de-registration timer The total execution time. This initial value also represents the maximum time that ON-SNPN allows each terminal device registered online to stay in ON-SNPN. For each mobile management network element that supports online account opening, this value in its local configuration information The initial value is the same.
  • the second mobility management network element can start the second de-registration timer according to the first information.
  • the above-mentioned starting of the second de-registration timer can be understood as the second mobility management network element according to the first mobility management network element.
  • the time information of the first de-registration timer starts the second de-registration timer and executes the remaining time of the first de-registration timer on the first mobility management network element, which can also be understood as the second mobility management network element according to the online account opening instruction information Start the second de-register timer.
  • the method further includes: the second mobility management network element starts a second de-registration timer according to the online account opening indication information.
  • the time information of the first de-registration timer or the online account opening indication information on the first mobility management network element is obtained from the first mobility management network element by the second mobility management network element, so that After the redirection of the mobility management network element occurs, the second mobility management network element can still start the de-registration timer.
  • the de-registration timer expires, the de-registration process is triggered, and the registration information of the terminal device is deregistered on the ON-SNPN, and Triggers PDU session release, thus preventing end-devices from indefinitely camping on ON-SNPN.
  • the method further includes: before the second mobility management network element receives the first message sent by the first mobility management network element, sending the first message to the first mobility management network element The second message, the second message carries the online account opening capability information of the second mobility management network element, and the online account opening capability information of the second mobility management network element is used to indicate whether the second mobility management network element supports online account opening.
  • first message may specifically be a UE context acquisition response message, or a UE context establishment request message, or an N2 message notification confirmation message, which is not limited in this embodiment of the present application.
  • second message may specifically be a request to obtain a UE context message, or a UE context establishment response message, which is not limited in this embodiment of the present application.
  • the method further includes: when the first information is time information of a first de-registration timer on the first mobility management network element, the first Before the mobility management network element sends the second message to the first mobility management network element, it receives the N2 message sent by the network element of the access network, and the N2 message carries the online account opening instruction information and registration request, wherein the online account opening
  • the indication information is used to indicate that the terminal device is performing online account opening and registration, or indicates that the terminal device is a terminal device for online account opening and registration
  • the registration request is used to indicate that the terminal device requests to register on the second mobility management network element.
  • the method further includes: after the second mobility management network element starts a second de-registration timer according to the first information, sending a registration response message to the terminal device , the registration response message is used to indicate that the terminal device successfully registers on the second mobility management network element.
  • the second mobility management network element sends the online account opening capability information of the second mobility management network element to the first mobility management network element, so that the first mobility management network element can determine the second mobility management network element.
  • the element supports online account opening, so as to send the time information of the first de-registration timer on the first mobility management network element or the online account opening indication information to the second mobility management network element. After the redirection of the mobility management network element occurs, the second mobility management network element can start the de-registration timer.
  • the de-registration process is triggered, the registration information of the terminal device is deregistered on the ON-SNPN, and the trigger PDU session release, thus preventing end-devices from indefinitely camping on the ON-SNPN.
  • the method further includes: sending a first request message to a network storage network element, where the first request message is used to request to register mobility management in the network storage network element The identification information of the network element and the online account opening capability information, or the first request message is used to request to update the identification information of the mobile management network element and the online account opening capability information in the network storage network element; receive the first A response message, the first response message is used to indicate that the network storage network element has accepted the first request message.
  • the first request message may be an NF registration request message or an NF update request message
  • the first response message may be an NF registration response message or an NF update response message.
  • the above mobile management network element identification information may be a fully qualified domain name (Fully Qualified Domain Name, FQDN), a globally unique identifier (Globally Unique AMF Identifier, GUAMI) and an IP address, etc., which are not limited in this embodiment of the present application .
  • FQDN Fully Qualified Domain Name
  • GUAMI Globally Unique AMF Identifier
  • the above NF registration request message requests to add the online account opening of the second mobility management network element to the NF configuration file information of the network storage network element Capability information; when the online account opening capability information of the second mobile management network element already exists in the network storage network element, but when the support of the second mobile management network element for online account opening changes, the above NF update request message is used to request the online account opening information in the network storage network Update the online account opening capability information of the second mobility management network element in the NF configuration file information of the element.
  • the second mobility management network element saves or updates the online account opening capability information of the second mobility management network element in the network storage network element, so that the first mobility management network element can query the network storage network
  • the element discovers and selects a second mobility management network element that supports online account opening, so as to send the time information of the de-registration timer on the first mobility management network element or the online account opening indication information to the second mobility management network element.
  • the de-registration timer can still be executed on the second mobility management network element.
  • the de-registration process is triggered to cancel the registration of the terminal device on the ON-SNPN information, and trigger PDU session release, thereby preventing end devices from infinitely camping on the ON-SNPN.
  • the above-mentioned first mobile management network element may be an Old AMF network element or an S-AMF network element
  • the above-mentioned second mobile management network element may be a New AMF network element or a T-AMF network element
  • the network storage network element may be an NRF network element
  • the access network element may be a RAN network element.
  • the foregoing network elements may also have other names, which are not specifically limited in this embodiment of the present application.
  • some or all of the foregoing network elements may use terms in 5G, or may use other names, which are not limited in this embodiment of the present application.
  • a de-registration method is provided, which can be performed by a network device, or can also be performed by a chip or circuit used for a network device, which is not limited in this application.
  • a de-registration method is provided, which can be performed by a network device, or can also be performed by a chip or circuit used for a network device, which is not limited in this application.
  • the following is represented by The implementation of the first mobility management network element is taken as an example for description.
  • the method may include: the first mobility management network element determines that the second mobility management network element supports online account opening; the first mobility management network element sends a first message to the second mobility management network element, the first message carries first information,
  • the first information is online account opening (onboarding) indication information or time information of a first de-registration timer on the first mobility management network element.
  • the online account opening instruction information is used to indicate that the terminal device is registering for online account opening, or is used to indicate that the terminal device is a terminal device registered for online account opening;
  • the time information of the first de-registration timer on the first mobility management network element It is used to indicate the elapsed time or remaining time of the first de-registration timer on the first mobility management network element.
  • the first message may specifically be a UE context acquisition response message, or a UE context establishment request message, or an N2 message notification confirmation message, which is not limited in this embodiment of the present application.
  • the first mobility management network element sends the time information of the first de-registration timer on the first mobility management network element or the online account opening instruction to the second mobility management network element that supports online account opening Information, so that after the redirection of the mobility management network element, the second mobility management network element can still start the de-registration timer.
  • the de-registration timer expires, the de-registration process is triggered and the registration of the terminal device is deregistered on the ON-SNPN information, and trigger PDU session release, thereby preventing end devices from infinitely camping on the ON-SNPN.
  • the method further includes: according to whether the first mobility management network element has started the first de-registration timer, determining that the first mobility management network element registers with the second mobility management network element Specific content of the first information carried in the first message sent by the network element.
  • the method further includes: the first mobility management network element has started the first de-registration timer, and the first mobility management network element sends the second mobility management network element
  • the first information carried in the first message sent is the time information of the first de-registration timer on the first mobility management network element, and the time information of the first de-registration timer on the first mobility management network element is used for Indicates the elapsed time of the first de-registration timer on the first mobility management network element, or is used to indicate the remaining time of the first de-registration timer on the first mobility management network element.
  • the method further includes: the first mobility management network element has not started the first de-registration timer, then sending the first mobility management network element to the second mobility management network
  • the first information carried in the first message sent by the unit is online account opening indication information, and the online account opening indication information is used to indicate that the terminal device is registering for online account opening, or is used to indicate that the terminal device is a terminal device registered for online account opening.
  • the method further includes: the first mobility management network element receives a second message sent by the second mobility management network element, the second message carrying the second mobility management Network element online account opening capability information, the online account opening capability information of the second mobility management network element is used to indicate whether the mobility management network element supports online account opening; the first mobility management network element according to the online account opening capability information of the second mobility management network element It is determined that the second mobility management network element supports online account opening.
  • the method further includes: the first mobility management network element queries local configuration information, and determines according to the online account opening capability information of the second mobility management network element in the local configuration information The second mobile management network element supports online account opening
  • the method further includes: the first mobility management network element acquires online account opening indication information, where the online account opening indication information is used to indicate that the terminal device is performing online account opening registration, Alternatively, it is used to indicate that the terminal device is a terminal device registered for online account opening, and the first mobility management network element selects the second mobility management network element that supports online account opening according to the above online account opening instruction information.
  • the method further includes: the first mobility management network element selects a second mobility management network element that supports online account opening according to the received online account opening instruction information and local configuration information .
  • the method further includes: after the first mobility management network element obtains the online account opening instruction information, the first mobility management network element sends a second request message to the network storage network element , the second request message carries online account opening instruction information, and the above second request message is used to request the network storage network element to search for instance information of a mobile management network element that supports online account opening, wherein the online account opening instruction information is used to instruct the terminal
  • the device is opening and registering online, or indicates that the terminal device is a terminal device for online account opening and registration; the first mobile management network element receives the second response message sent by the above-mentioned network storage network element, and the second response message carries the network storage network element.
  • the found instance information of the mobility management network element that supports online account opening includes the instance information of the second mobility management network element; Select the second mobility management network element from the instance information of the mobility management network element where the account is opened.
  • the above-mentioned second request message may be an NF discovery request message
  • the second response message may be an NF discovery response message
  • the second request message and the second response message may also be other messages, which are not limited in this embodiment of the present application.
  • the method further includes: the first mobility management network element acquires the above online account opening instruction information by acquiring the UE context.
  • the method further includes: before the first mobility management network element acquires the online account opening indication information from the UE context, according to the online account information acquired from the N2 or N14 message, The account opening instruction information, or according to the "SNPN online account opening (SNPNonboarding)" registration type, save the online account opening instruction information in the UE context.
  • the redirection of the mobility management network element may not occur, so the online The account opening instruction information is stored in the context, and when the mobile management network element redirection occurs, the online account opening instruction information is obtained from the UE context; or, when the AMF redirection has occurred, the N14 message is received, but for The online account opening indication information in the N14 message is subsequently used, and the online account opening indication information is first saved in the UE context.
  • the original mobility management network element cannot continue to serve the terminal device.
  • the mobility management network element needs to be selected again, that is, mobility management Network element redirection.
  • the mobility management network element redirection process may occur during the terminal equipment mobility registration process, that is, the terminal equipment is in an idle state at this time, then the process of selecting the second mobile network element will be performed by the access network element, at this time , the first mobility management network element needs to confirm that the second mobility management network element supports online account opening before delivering the first information to it; or, the redirection process of the mobility management network element may occur during the handover process, that is, at this time the terminal device is in the In the connected state, the process of selecting the second mobile network element will be executed by the first mobility management network element.
  • the first mobility management network element selects the second mobility management network element, it can directly select the second The mobility management network element then transmits the above-mentioned first information to it, that is, no additional step of determining whether the second mobility management network element supports online account opening is no longer required at this time.
  • the first mobility management network element sends the time information of the first de-registration timer on the first mobility management network element or the online account opening instruction to the second mobility management network element that supports online account opening Information, so that after the redirection of the mobility management network element occurs, the second mobility management network element can obtain the time information of the first de-registration timer on the first mobility management network element or the online account opening instruction information and start the de-registration timer, After the de-registration timer expires, the de-registration process is triggered, the registration information of the terminal device is deregistered on the ON-SNPN, and the release of the PDU session is triggered, thereby preventing the terminal device from staying on the ON-SNPN indefinitely.
  • a de-registration method may include: a network storage network element receiving a first request message sent by a second mobility management network element, where the first request message is used to request a registration in the network storage network element Registering the identification information of the mobility management network element and the online account opening capability information, or the first request message is used to request to update the identification information of the mobility management network element and the online account opening capability information in the network storage network element; the network storage network element according to the A request message saves the mobility management network element identification information and the online account opening capability information of the second mobility management network element in the NF configuration file; the network storage network element sends a first response message to the second mobility management network element, and the above-mentioned first response message uses to indicate that the network storage network element has accepted the first request message.
  • the first request message may be an NF registration request message or an NF update request message
  • the first response message may be an NF registration response message or an NF update response message.
  • the above mobile management network element identification information may be a fully qualified domain name (Fully Qualified Domain Name, FQDN), a globally unique identifier (Globally Unique AMF Identifier, GUAMI) and an IP address, etc., which are not limited in this embodiment of the present application .
  • FQDN Fully Qualified Domain Name
  • GUAMI Globally Unique AMF Identifier
  • the above NF registration request message requests to add the online account opening of the second mobility management network element to the NF configuration file information of the network storage network element Capability information; when the online account opening capability information of the second mobile management network element already exists in the network storage network element, but when the support of the second mobile management network element for online account opening changes, the above NF update request message is used to request the online account opening information in the network storage network Update the online account opening capability information of the second mobility management network element in the NF configuration file information of the element.
  • the method further includes: the network storage network element receives a second request message sent by the first mobility management network element, the second request message carries online account opening indication information,
  • the above second request message is used to request the network storage network element to search for instance information of a mobile management network element that supports online account opening, wherein the online account opening indication information is used to indicate that the terminal device is registering for online account opening, or indicates that the terminal device is A terminal device for online account opening and registration;
  • the network storage network element queries the instance information of the mobile management network element that supports online account opening according to the NF configuration file, and the instance information of the mobile management network element that supports online account opening includes the second mobile management network element Instance information: the second response message sent by the network storage network element to the first mobility management network element, the second response message carrying the instance information of the mobility management network element that supports online account opening found by the network storage network element.
  • the above-mentioned second request message may be an NF discovery request message
  • the second response message may be an NF discovery response message
  • the second request message and the second response message may also be other messages, which are not limited in this embodiment of the present application.
  • the second mobility management network element saves or updates the online account opening capability information of the second mobility management network element in the network storage network element, so that the first mobility management network element can query the network storage network
  • the element discovers and selects a second mobility management network element that supports online account opening, so as to send time information of the first de-registration timer on the first mobility management network element or online account opening instruction information to the second mobility management network element. After the redirection of the mobility management network element occurs, the second mobility management network element can start the de-registration timer.
  • the de-registration process is triggered, the registration information of the terminal device is deregistered on the ON-SNPN, and the trigger PDU session release, thus preventing end-devices from indefinitely camping on the ON-SNPN.
  • a method for de-registration may include: an access network element receiving a third message sent by a terminal, the third message carrying online account opening instruction information and a registration request, and the above online account opening instruction information is used Instructing the terminal device to be registering for online account opening, or indicating that the terminal device is a terminal device for online account opening registration; selecting a second mobility management network element according to the online account opening instruction information; sending an N2 message to the second mobility management network element, the The N2 message carries the online account opening indication information and the registration request.
  • the foregoing third message may be an Access Network (Access Network, AN) message or a Radio Resource Control (Radio Resource Control, RRC) message, which is not limited in this application.
  • Access Network Access Network
  • RRC Radio Resource Control
  • the access network element sends the N2 message carrying the online account opening indication information to the second mobility management network element, so that the second mobility management network element knows that the terminal device is opening and registering an online account, or that the terminal device has already registered online. equipment, so as to transmit the online account opening capability information of the second mobility management network element to the first mobility management network element.
  • a communication device is provided, and the device is configured to execute the method in any possible implementation manner of the foregoing first aspect to the fourth aspect.
  • the apparatus may include a unit and/or module for executing the methods provided in the first aspect to the fourth aspect, such as a processing unit and/or a transceiver unit.
  • the apparatus is a network device.
  • the transceiving unit may be a transceiver, or an input/output interface;
  • the processing unit may be a processor.
  • the apparatus is a chip, a chip system or a circuit used in a network device.
  • the transceiver unit may be an input/output interface, interface circuit, output circuit, input circuit, pin or pin on the chip, chip system or circuit.
  • the processing unit may be a processor, a processing circuit, or a logic circuit, etc.
  • the above-mentioned transceiver may be a transceiver circuit.
  • the above input/output interface may be an input/output circuit.
  • a communication device which includes: a memory for storing a program; a processor for executing the program stored in the memory, and when the program stored in the memory is executed, the processor is used for executing the above-mentioned first aspect to The method in any possible implementation manner of the fourth aspect.
  • the apparatus is a terminal device or a network device.
  • the apparatus is a chip, a chip system or a circuit used in a terminal device or a network device.
  • the present application provides a processor configured to execute the method in any possible implementation manner of the foregoing first aspect to the fourth aspect.
  • the process of sending the above information and obtaining/receiving the above information in the above method can be understood as the process of outputting the above information by the processor and the process of receiving the input of the above information by the processor.
  • the processor When outputting the above information, the processor outputs the above information to the transceiver for transmission by the transceiver. After the above information is output by the processor, other processing may be required before reaching the transceiver.
  • the transceiver acquires/receives the aforementioned information and inputs it into the processor. Furthermore, after the transceiver receives the above information, the above information may need to be processed before being input to the processor.
  • the online account opening instruction information and the time information of the first de-registration timer on the first mobility management network element mentioned in the foregoing method can be understood as information input by the processor.
  • processor For the operations of transmitting, sending, and acquiring/receiving involved in the processor, if there is no special description, or if it does not conflict with its actual function or internal logic in the relevant description, it can be understood more generally as the processor Output and receive, input and other operations, rather than the transmission, transmission and reception operations performed directly by radio frequency circuits and antennas.
  • the above-mentioned processor may be a processor dedicated to performing these methods, or may be a processor that executes computer instructions in a memory to perform these methods, such as a general-purpose processor.
  • the above-mentioned memory can be a non-transitory (non-transitory) memory, such as a read-only memory (Read Only Memory, ROM), which can be integrated with the processor on the same chip, or can be respectively arranged on different chips.
  • ROM read-only memory
  • the embodiment does not limit the type of the memory and the arrangement of the memory and the processor.
  • a computer-readable storage medium where the computer-readable medium stores program code for execution by a device, and the program code is included in any possible implementation manners for executing the first aspect to the fourth aspect above. Methods.
  • a computer program product including instructions is provided, and when the computer program product is run on a computer, it causes the computer to execute the method in any possible implementation manner of the above-mentioned first aspect to the fourth aspect.
  • a chip in a tenth aspect, there is provided a chip, the chip includes a processor and a communication interface, the processor reads instructions stored on the memory through the communication interface, and executes any possible operation of the first aspect to the fourth aspect above. method in the implementation.
  • the chip may further include a memory, the memory stores instructions, the processor is configured to execute the instructions stored in the memory, and when the instructions are executed, the The processor is configured to execute the method in any possible implementation manner of the foregoing first aspect to the fourth aspect.
  • a communication system in an eleventh aspect, includes a mobility management network element, and the mobility management network element can be used to perform any method of the first and second aspects and the first and second aspects by mobile The steps performed by the management network element.
  • system may further include an access network element, and the access network element may be used to perform the third aspect and any method of the third aspect performed by the access network element A step of.
  • system may further include a network storage network element, and the network storage network element may be configured to execute the steps performed by the network storage network element in the fourth aspect and any method of the fourth aspect.
  • the system may also include other network elements that interact with one or more of the mobility management network element, access network element, and network storage network element in the solutions provided in the embodiments of the present application.
  • the equipment includes the above-mentioned network equipment, such as the first mobility management network element and the second mobility management network element (such as AMF); another example is an access network element and a network storage network element (such as RAN and NRF).
  • FIG. 1 is a schematic diagram of a system architecture applied to an embodiment of the present application.
  • Figure 2 is a schematic diagram of a simplified 5G mobile communication system architecture.
  • Fig. 3 is a schematic diagram of a 5G mobile communication system architecture.
  • Fig. 4 is a schematic diagram of a non-public network applied to the embodiment of the present application.
  • Fig. 5 is a schematic diagram of an online account opening system architecture applied to the method provided by the embodiment of the present application.
  • Fig. 6 is a schematic flow chart of a de-registration method provided by an embodiment of the present application.
  • Fig. 7 is a schematic flowchart of a de-registration method provided by the embodiment of the present application.
  • Fig. 8 is a schematic flowchart of a de-registration method provided by the embodiment of the present application.
  • FIG. 9 is a schematic flowchart of another de-registration method provided by the embodiment of the present application.
  • Fig. 10 is a schematic flow chart of the handover preparation stage of another de-registration method provided by the embodiment of the present application.
  • Fig. 11 is a schematic flowchart of another de-registration method provided in the embodiment of the present application in the handover execution phase.
  • Fig. 12 is a schematic flowchart of another de-registration method provided by the embodiment of the present application.
  • Fig. 13 is a schematic flowchart of another de-registration method provided by the embodiment of the present application.
  • Fig. 14 is a schematic flowchart of another de-registration method provided by the embodiment of the present application.
  • Fig. 15 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • Fig. 16 is a schematic block diagram of another communication device provided by an embodiment of the present application.
  • FIG. 1 is a system architecture 100 applied to the embodiment of the present application. As shown in FIG. 1 , each part involved in the system architecture will be described separately below.
  • Mobility management network elements 110 and 120 mainly used for mobility management and access management, etc., and can be used to implement functions other than session management in mobility management entity (mobility management entity, MME) functions, for example, Functions such as lawful interception and access authorization/authentication.
  • MME mobility management entity
  • the mobility management network element may be an access and mobility management function (AMF) network element.
  • AMF access and mobility management function
  • the mobility management network element may still be an AMF network element, or may have other names, which are not limited in this application.
  • (R)AN network elements can manage wireless resources, provide access services for terminal devices, and then complete the forwarding of control signals and terminal device data between terminal devices and the core network.
  • (R)AN network elements can also be understood as traditional networks base station in .
  • Terminal device 150 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of terminals, mobile stations (mobile station, MS), terminal (terminal), user equipment (user equipment, UE), soft terminal and so on. For example, water meters, electricity meters, sensors, etc.
  • the above-mentioned system architecture 100 can be used to implement a de-registration method provided in the embodiment of the present application.
  • the mobility management network element 110 is specifically configured to: receive the second message sent by the mobility management network element 120 ; determine whether the mobility management network element 120 supports online account opening (onboarding) registration; and send the first message to the mobility management network element 120 .
  • the mobility management network element 110 determines whether the mobility management network element 120 supports online account opening and registration according to the online account opening capability information of the mobility management network element 120 . Further, the mobility management network element 110 may obtain the online account opening capability information of the mobility management network element 120 by querying local configuration information; or, the mobility management network element 110 may obtain the online account opening capability information of the mobility management network element 120 through a second message, That is, the second message carries the online account opening capability information of the mobility management network element 120 .
  • the second message may specifically be a UE context acquisition request message, or a UE context creation response message, which is not limited in this application.
  • the mobility management network element 110 may also be used to: select a mobility management network element 120 that supports online account opening and registration.
  • the mobility management network element 110 acquires the online account opening indication information from the UE context, and selects the mobility management network element 120 that supports online account opening according to the online account opening indication information. Further, the mobility management network element 110 can select the mobility management network element 120 that supports online account opening by querying local configuration information according to the online account opening instruction information; or, the mobility management network element 110 can find out by querying the online account opening instruction information And select the mobility management network element 120 that supports online account opening.
  • the mobility management network element 110 sends a first message to the mobility management network element 120 that supports online account opening, the above-mentioned first message carries first information, and the first information is used to instruct the mobility management network element 120 to start the de-registration timer Specifically, the first information may be time information of the first de-registration timer on the mobility management network element 110 or online account opening indication information.
  • the first message sent by the mobility management network element 110 to the mobility management network element 120 may carry online account opening instruction information, and the online account opening instruction information It is used to indicate that the terminal device is registering for online account opening, or indicates that the terminal device is a terminal device that is registering for online account opening.
  • the first message sent by the mobility management network element 110 to the mobility management network element 120 may carry the first de-registration timer on the mobility management network element 110
  • the time information of the timer, the time information of the first de-registration timer on the mobility management network element 110 is used to indicate the elapsed time or the remaining time of the first de-registration timer on the mobility management network element 110 .
  • the first message may specifically be a UE context acquisition response message sent to the mobility management network element 120; or, the first message is a UE context establishment request message; or, the first message is an N2 message notification confirmation message; or, the first message A message may also be other messages, which is not limited in this application.
  • the mobility management network element redirection process may occur during the terminal device mobility registration process, that is, the terminal device is in an idle state at this time; or, the mobility management network element redirection process may occur during the handover process, that is, at this time The terminal device is in the connected state.
  • the location of the terminal device moves and causes the mobility management network element to be redirected, it may move to an area that does not support online account opening.
  • the mobile management network element 120 that supports online account opening may not be selected.
  • the mobile management network element in order to ensure the continuity of the call or the normal progress of the mobility registration process, the mobile management network element can only be selected not to support online account opening.
  • the mobility management network element 110 determines that the mobility management network element 120 does not support online account opening and registration according to the online account opening capability information of the mobility management network element 120
  • the first message sent to the mobility management network element 120 may not carry the first information.
  • the network element 120 sends the first message carrying the first information.
  • the first information in the first message no longer instructs the mobility management network element 120 to start the second de-registration timer.
  • the mobility management network element supporting online account opening may be selected during the next mobility management network element redirection, and the first information may be transmitted to the mobility management network element supporting online account opening.
  • the mobility management network element 120 is configured to: receive the first message sent by the mobility management network element 110; perform the first operation according to the acquired first message and whether it supports online account opening; send the second message to the mobility management network element 110 information.
  • the first operation is specifically to start the second de-registration timer according to the online account opening instruction information; or, the first operation is to save the online account opening instruction information in the UE context; or, the first operation is to The time information of the de-registration timer on 110 starts the second de-registration timer and continues to execute the remaining time of the first de-registration timer; or, the first operation is to ignore the first de-registration timer on the mobility management network element 110 time information.
  • the mobility management network element 120 supports online account opening, start the second de-registration timer according to the online account opening instruction information carried in the received first message; or, if the mobility management network element 120 supports online account opening, then according to The time information of the first de-registration timer on the mobility management network element 110 carried in the received first message starts the second de-registration timer and continues to execute the remaining time of the first de-registration timer; or, if the mobility management The network element 120 does not support online account opening, then saves the online account opening indication information carried in the received first message in the UE context, and when the next mobility management network element is reconfigured (relocation), the above online account opening indication information is passed through The UE context is transferred to the new mobility management network element; or, if the mobility management network element 120 does not support online account opening, the time information of the de-registration timer on the mobility management network element 110 carried in the received first message is ignored or delete.
  • the access network element 130 is configured to: receive the third message sent by the terminal 150, the third message may carry online account opening instruction information, and optionally, the radio resource control message may also carry a registration request message, specifically , the third message may be a radio resource control message or an access network message, or other messages, which are not limited in this embodiment of the present application; select the mobility management network element 120; send an N2 message to the mobility management network element 120, the above N2 The message may carry online account opening instruction information, and optionally, the above N2 message may also carry a registration request.
  • the access network element 130 may also be configured to: receive a handover request message sent by the mobility management network element 120 ; send a handover request response message to the mobility management network element 120 ; and send a handover notification message to the mobility management network element 120 .
  • the access network element 140 is configured to: send a handover preparation message to the mobility management network element 110, the above-mentioned handover preparation message is used to notify the mobility management network element 110 to perform handover; receive the handover command message sent by the mobility management network element 110 ; Send a switching command message to the terminal 150 ;
  • the terminal 150 is configured to: send the above third message to the access network element 130, the above third message may carry online account opening instruction information, optionally, the above third message may also carry a registration request message; receive the mobile management A registration response message sent by the network element 120.
  • the terminal 150 may also be configured to: receive a handover command message sent by the network element 140 of the access network.
  • the terminal 150 may also be configured to: send a handover confirmation message to the network element 130 of the access network.
  • the above-mentioned terminal 150 may be a terminal in a connected state or an idle state terminal, and the mobility management network element 110 and the mobility management network element 120 may communicate through the N14 interface, which is not limited in this embodiment of the present application .
  • Fig. 2 shows a 5G mobile communication system architecture diagram.
  • the 5G mobile communication system architecture consists of a (wireless) access network (radio access network, (R) AN), a core network (Core) and a data network (data network, DN).
  • R radio access network
  • Core core network
  • DN data network
  • UE, AN, and Core are the main components of the architecture. Logically, they can be divided into two parts: the user plane and the control plane.
  • the control plane is responsible for the management of the mobile network, and the user plane is responsible for the transmission of business data.
  • the NG2 reference point is located between the AN control plane and the Core control plane
  • the NG3 reference point is located between the AN user plane and the Core user plane
  • the NG6 reference point is located between the Core user plane and the data network.
  • the UE It is the entrance for mobile users to interact with the network. It can provide basic computing capabilities and storage capabilities, display service windows to users, and accept user operation inputs. The UE will adopt new air interface technology to establish a signal connection and a data connection with the AN, thereby transmitting control signals and service data to the mobile network.
  • AN Similar to the base station in the traditional network, it is deployed close to the UE to provide network access functions for authorized users in a specific area, and can use transmission tunnels of different qualities to transmit user data according to user levels and service requirements. AN can manage its own resources, use them reasonably, provide access services for UEs as needed, and forward control signals and user data between UEs and the core network.
  • Core responsible for maintaining the subscription data of the mobile network, managing the network elements of the mobile network, and providing functions such as session management, mobility management, policy management, and security authentication for the UE.
  • the DN It is a data network that provides business services for users.
  • the client is located in the UE, and the server is located in the data network.
  • the data network can be a private network, such as a local area network, or an external network not controlled by the operator, such as the Internet, or a proprietary network jointly deployed by the operator, such as for the configuration of the IP multimedia core network subsystem (IP multimedia core network subsystem, IMS) service.
  • IP multimedia core network subsystem IP multimedia core network subsystem
  • Figure 3 is the detailed architecture determined on the basis of Figure 2, in which the control plane of the core network adopts a service-oriented architecture, and the interaction between network elements on the control plane adopts the method of service invocation.
  • the control plane network element opens the service for other control plane network elements to call.
  • User equipment (user equipment, terminal) 310 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of terminals, Mobile station (mobile station, MS), terminal (terminal) or soft terminal, etc. For example, water meters, electricity meters, sensors, etc.
  • the user equipment in this embodiment of the present application may refer to an access terminal, a subscriber unit, a user station, a mobile station, a mobile station, a relay station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal ( terminal equipment), wireless communication equipment, user agent or user device.
  • the user equipment can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, user equipment in 5G networks or users in future evolved public land mobile networks (PLMN) Devices or user equipment in the future Internet of Vehicles, etc., are not limited in this embodiment of the present application.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • PLMN public land mobile networks
  • wearable devices can also be referred to as wearable smart devices, which is a general term for intelligently designing daily wear and developing wearable devices by applying wearable technology, such as glasses, Gloves, watches, clothing and shoes, etc.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the user equipment can also be the user equipment in the Internet of Things (Internet of Things, IoT) system.
  • IoT Internet of Things
  • the IOT technology can achieve massive connections, deep coverage, and terminal power saving through, for example, narrow band (NB) technology.
  • the user equipment may also include sensors such as smart printers, train detectors, and gas stations, and its main functions include collecting data (part of user equipment), receiving control information and downlink data of access network equipment, and Send electromagnetic waves to transmit uplink data to access network equipment.
  • (wireless) access network equipment (radio access network, (R)AN) 320 used to provide network access functions for authorized user equipment in a specific area, and can use different quality radios according to the level of user equipment and service requirements, etc. transport tunnel.
  • R radio access network
  • (R)AN can manage wireless resources, provide access services for user equipment, and then complete the forwarding of control signals and user equipment data between user equipment and the core network.
  • (R)AN can also be understood as a base station in a traditional network.
  • the access network device in the embodiment of the present application may be any communication device with a wireless transceiver function for communicating with the user equipment.
  • the access network equipment includes but not limited to: evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), Node B (Node B, NB), base station controller (base station controller) , BSC), base transceiver station (base transceiver station, BTS), home base station (home evolved NodeB, HeNB, or home Node B, HNB), baseband unit (baseBand unit, BBU), wireless fidelity (wireless fidelity, WIFI)
  • the access point (access point, AP), wireless relay node, wireless backhaul node, transmission point (transmission point, TP) or transmission and reception point (transmission and reception point, TRP) in the system can also be 5G, For example, NR, gNB in the system, or, transmission point (TRP or TP), one or a group (including multiple antenna panels) antenna
  • a gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include an active antenna unit (AAU).
  • the CU implements some functions of the gNB, and the DU implements some functions of the gNB.
  • the CU is responsible for processing non-real-time protocols and services, and realizing the functions of radio resource control (radio resource control, RRC) and packet data convergence protocol (packet data convergence protocol, PDCP) layer.
  • the DU is responsible for processing physical layer protocols and real-time services, realizing the functions of the radio link control (radio link control, RLC) layer, media access control (media access control, MAC) layer and physical (physical, PHY) layer.
  • the AAU implements some physical layer processing functions, radio frequency processing and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by the DU , or, sent by DU+AAU.
  • the access network device may be a device including one or more of a CU node, a DU node, and an AAU node.
  • the CU can be divided into access network devices in the access network (radio access network, RAN), and the CU can also be divided into access network devices in the core network (core network, CN). Do limited.
  • User plane network element 330 used for packet routing and forwarding, and user plane data quality of service (quality of service, QoS) processing, etc.
  • the user plane network element may be a user plane function (user plane function, UPF) network element.
  • UPF user plane function
  • the user plane network element may still be a UPF network element, or may have other names, which are not limited in this application.
  • Data network element 340 used to provide a network for transmitting data.
  • the data network element may be a data network (data network, DN) network element.
  • the data network element may still be a DN network element, or may have other names, which are not limited in this application.
  • Session management network element 350 mainly used for session management, terminal network interconnection protocol (internet protocol, IP) address allocation and management, selection of manageable user plane functions, policy control and charging function interface endpoints and downlink data notification etc.
  • IP terminal network interconnection protocol
  • the session management function network element may be a session management function (session management function, SMF) network element.
  • SMF session management function
  • the network element with the session management function may still be an SMF network element, or may have other names, which are not limited in this application.
  • Access management network element 360 mainly used for mobility management and access management, etc., and can be used to implement functions other than session management in mobility management entity (mobility management entity, MME) functions, for example, legal functions such as monitoring and access authorization/authentication.
  • mobility management entity mobility management entity, MME
  • the access management network element may be an access and mobility management function (access and mobility management function, AMF) network element.
  • AMF access and mobility management function
  • the access management network element may still be an AMF network element, or may have other names, which are not limited in this application.
  • Authentication server 370 used for authentication services, generating keys to implement two-way authentication on terminals, and supporting a unified authentication framework.
  • the authentication server may be an authentication server function (authentication server function, AUSF) network element.
  • the authentication server functional network element may still be an AUSF network element, or may have other names, which are not limited in this application.
  • Network slice selection network element 380 used to search for a policy control function (policy control function, PCF) network element associated with the session.
  • policy control function policy control function
  • the network slice selection network element may be a network slice selection function (network slice selection function, NSSF) network element.
  • NSSF network slice selection function
  • the network element selected for network slicing may still be an NSSF network element, or may have other names, which are not limited in this application.
  • Network open network element 390 open network functions to third parties in the form of northbound API interfaces.
  • the network exposure network element may be a network exposure function (network exposure function, NEF) network element.
  • NEF network exposure function
  • the open network element may still be an NEF network element, or may have other names, which are not limited in this application.
  • Network storage network element 3100 used to maintain real-time information of all network function services in the network.
  • the network storage network element may be a network registry function (network repository function, NRF) network element.
  • NRF network repository function
  • the network storage network element may still be an NRF network element, or may have other names, which are not limited in this application.
  • the above-mentioned network element or function may be a network element in a hardware device, or a software function running on dedicated hardware, or a virtualization function instantiated on a platform (for example, a cloud platform).
  • network architecture involved in Figure 1 may also include other network elements, such as network elements or devices such as unified data repository (unified data repository, UDR) or network storage function (network repository function, NRF), etc., which are not specifically limited. .
  • network elements or devices such as unified data repository (unified data repository, UDR) or network storage function (network repository function, NRF), etc., which are not specifically limited. .
  • Policy control network element 3110 a unified policy framework for guiding network behavior, providing policy rule information, etc. for control plane functional network elements (such as AMF, SMF, etc.).
  • the policy control network element may be a policy and charging rules function (policy and charging rules function, PCRF) network element.
  • policy control network element may be a policy control function (policy control function, PCF) network element.
  • policy control network element may still be a PCF network element, or may have other names, which are not limited in this application.
  • Data management network element 3120 used to process terminal identification, access authentication, registration, and mobility management.
  • the data management network element may be a unified data management (unified data management, UDM) network element.
  • UDM unified data management
  • the unified data management may still be a UDM network element, or may have other names, which are not limited in this application.
  • Application network element 3130 used for data routing that influences applications, accessing network elements with open network functions, and interacting with policy frameworks for policy control, etc.
  • the application network element may be an application function (application function, AF) network element.
  • the application network element may still be an AF network element, or may have other names, which are not limited in this application.
  • the N1 interface is the reference point between UE and AMF; the N2 interface is the reference point between (R)AN and AMF, used for sending NAS messages, etc.; the N3 interface is (R)AN and UPF The reference point between them is used to transmit user plane data, etc.; the N4 interface is the reference point between SMF and UPF, used to transmit such information as the tunnel identification information of the N3 connection, data cache indication information, and downlink data notification messages ; The N6 interface is a reference point between the UPF and the DN, and is used to transmit user plane data and the like.
  • Fig. 4 shows a schematic diagram of a non-public network applied to the embodiment of the present application.
  • the non-public network (Non-public network, NPN) shown in Figure 4 is a non-public 5G network, which can be divided into public network integrated NPN (public network integrated NPN, PNI-NPN) according to whether it depends on the network function of PLMN. And independent deployment of NPN (standalone NPN, SPNN). Introduce PNI-NPN and SPNN in turn below.
  • NPN public network integrated NPN
  • SPNN independent deployment of NPN
  • PNI-NPN PNI-NPN
  • a closed access group (CAG) function can be additionally used.
  • a CAG identifies a group of users that are allowed access to cells associated with the CAG (CAG cells).
  • CAG cells broadcast one or more CAG IDs, and configure available CAG lists and indications on terminal devices (indicating whether terminal devices are only allowed to pass through CAG cells) access to 5GS), the UE subscription data on UDM includes the available CAG list and indication, that is, the access of the terminal device is restricted by broadcasting the CAG ID and configuring the CAG ID available to the terminal device.
  • SNPN which does not depend on the PLMN network.
  • SNPN is identified by PLMN ID + network identifier (Network identifier, NID), where the PLMN ID can be an inherent value reserved by a third-party operator, or it can be a deployment PLMN operator specific value for this SPNN.
  • NID Network identifier
  • its cell broadcasts the PLMN ID+NID, and the terminal device selects the NPN to access according to the broadcast information and the configured network selection information.
  • the terminal device finds that the configured network selection information (PLMN ID+NID1) is not the same as the PLMN ID or PLMN ID+NID2 broadcasted by the network, the terminal device will not choose its access, that is, the terminal device will be correct by broadcasting the PLMN ID and NID. Select a cell and network.
  • the configured network selection information PLMN ID+NID1
  • the terminal device accesses the network to establish a temporary restricted connection, so as to configure the terminal device by obtaining new or updated subscription data from the provisioning server (Provisioning Server, PVS) through the temporarily restricted connection .
  • provisioning Server Provisioning Server
  • SNPN online account opening (SNPN onboarding) registration In order to achieve the purpose of online account opening, based on the default UE credentials, the terminal device selects and registers to the online account opening SNPN network (onboarding SNPN, ON-SNPN) through the SNPN online account registration process, and ON-SNPN establishes a secure connection to access ON-SNPN. After that, the terminal device can establish a restricted PDU session on ON-SNPN. Through the restricted PDU session, the credentials used for initial authentication and other The process of configuring information to the terminal device so that the terminal device can access the subscription owner SNPN network (subscription owner SNPN, SO-SNPN).
  • the above can support the terminal device to establish a secure connection with the SNPN through the SNPN online account registration process, thereby allowing the terminal device to access the ONN's SNPN, which is called Onboarding standalone non-public network (ON-SNPN) .
  • ON-SNPN Onboarding standalone non-public network
  • Initial registration the process of terminal equipment registering in the network for the first time. In this embodiment of the application, it refers to the process of the terminal device performing online account opening and registration in an SNPN area that supports online account opening for the first time, that is, SNPN online account opening and registration.
  • Mobility registration In the embodiment of this application, after the terminal device completes the initial registration on ON-SNPN, the location of the terminal device moves within ON-SNPN, and the location information of the terminal device needs to be updated on ON-SNPN , for subsequent mobility management, this process is called mobility registration. In this process, if the original mobility management network element cannot continue to serve the terminal equipment, the redirection of the mobility management network element will be triggered.
  • Handover process When the position of the terminal equipment moves, in order to provide continuous uninterrupted communication services for the terminal equipment, effectively prevent the call drop caused by the deterioration of the signal quality of the cell, or indicate that the terminal equipment can be compared with the current The process initiated by serving cell communication with better channel quality.
  • De-registration timer When a terminal device that accesses ON-SNPN through SNPN online account opening and registration completes the user plane remote setting of SO-SNPN credentials, it should initiate a deregistration from ON-SNPN.
  • the de-registration timer is a specific timer used to trigger the deregistration of the terminal device from the ON-SNPN.
  • the mobility management network element can start the de-registration timer, and the de-registration timer will trigger the de-registration process when the timer expires. Unregister the terminal device registered through SNPN online account opening.
  • an initial value of the de-registration timer can be set in the local configuration of the mobility management network element.
  • the initial value is the total execution time of the de-registration timer.
  • This initial value also represents that ON-SNPN allows each online The maximum time that a terminal device for account opening and registration can stay in ON-SNPN, for each mobility management network element that supports online account opening, the initial value in its local configuration information is the same.
  • the aforementioned mobility management network element may be an access and mobility management function (access and mobility management function, AMF) network element.
  • AMF access and mobility management function
  • the mobility management network element may still be an AMF network element, or may have another name, which is not limited in this embodiment of the present application.
  • Figure 5 is a schematic diagram of the system architecture of online account opening based on NPN shown in Figure 4, which is an extension of the 5G mobile communication system architecture, in which the core network control plane adopts a point-to-point The message, which can only be used by the control plane network elements at both ends of the interface during communication.
  • the AMF communicates with the SMF through the N11 interface
  • the AMF communicates with the AUSF through the N12 interface
  • the AMF communicates with the NSSF through the N22 interface
  • the AMF communicates with the PCF through the N15 interface.
  • the AUSF is connected to the default credential server (DCS) through the interface, wherein the DCS is used to authenticate and authenticate the terminal device based on the default UE credential during the online account opening process.
  • DCS credential server
  • the terminal device uses the DSC certificate to open an SNPN online account registration in ON-SNPN. After success, the terminal device obtains initial access in ON-SNPN, and AMF will start the de-registration timer. When the timer expires After a period of time, the terminal device is triggered to unregister from the ON-SNPN, ie to go to register, thereby preventing the terminal device from infinitely camping on the ON-SNPN.
  • the terminal device can initiate a PDU session establishment request to obtain the PDU session connection service of the network.
  • the terminal device can establish a connection with the PVS through the PDU session, so that the terminal device obtains new subscription data of the subscription owner SNPN (Subscription owner SNPN, SO-SNPN) from the PVS.
  • subscription owner SNPN Subscribescription owner SNPN, SO-SNPN
  • ON-SNPN may support online account opening in some areas, and in cells in these areas, the RAN broadcasts an onboarding enabled indication, indicating whether the cell supports online account opening.
  • the terminal device When the terminal device is located in an ON-SNPN cell that supports online account opening, it can choose to register online on the ON-SNPN according to the onboarding enabled instruction in the broadcast message. After the terminal device successfully registers for online account opening, it can subsequently move to other service areas of ON-SNPN, for example, to a cell that does not support online account opening. This does not affect the terminal device obtaining a new subscription from PVS through the PDU session.
  • the name of the interface between network elements in FIG. 2 , FIG. 3 and FIG. 5 is just an example, and the name of the interface in a specific implementation may be another name, which is not specifically limited in this embodiment of the present application.
  • the names of network elements (such as SMF, AF, UPF, etc.) included in FIGS. 1 to 5 are only examples, and do not limit the functions of the network elements themselves. In the 5G network and other networks in the future, the foregoing network elements may also have other names, which are not specifically limited in this embodiment of the present application.
  • some or all of the above-mentioned network elements may use the terms in 5G, or may use other names, etc., which will be described in a unified manner here, and will not be described in detail below.
  • the names of the messages (or signaling) transmitted between the foregoing network elements are only examples, and do not constitute any limitation on the functions of the messages themselves.
  • FIG. 6 shows a schematic flowchart of a de-registration method provided by an embodiment of the present application.
  • the method may be applied to the system architecture shown in FIG. 1 to FIG. 3 , and may also be applied to the system architecture shown in FIG. 5 , and the embodiment of the present application is not limited thereto.
  • FIG. 6 shows the steps or operations of the de-registration method, but these steps or operations are only examples, and other operations or variations of the operations in FIG. 6 may also be performed in the embodiment of the present application.
  • the various steps in FIG. 6 may be performed in a different order than that presented in FIG. 6, and it is possible that not all operations in FIG. 6 are to be performed.
  • the position of the terminal equipment has moved, causing the initial mobility management network element, that is, the first mobility management network element, to be unable to serve the above-mentioned terminal equipment, and it is necessary to select a new mobility management network element, that is, the second mobility management network element.
  • the management network element serves the above-mentioned terminal equipment.
  • the foregoing selection of the second mobility management network element may be performed by an access network element.
  • the network element of the access network selects the second mobile management network element according to the online account opening instruction information carried by the RRC signaling sent by the terminal.
  • the online account opening instruction information is used to indicate that the terminal device is registering for online account opening or indicating that the terminal device is registering for online account opening Terminal Equipment.
  • the above step of selecting the second mobility management network element is performed by the first mobility management network element.
  • the first mobile management network element obtains the online account opening instruction information, and learns that the terminal device is in the process of online account opening registration, or has already opened an online account registration, then the first mobile management network element queries the local configuration information and selects the second mobile management network element that supports online account opening.
  • the network element, or the first mobility management network element discovers and selects the second mobility management network element that supports online account opening by querying the network storage network element. If the first mobility management network element selects the second mobility management network element according to the local configuration information, before this step, the online account opening capability information of each mobility management network element needs to be preset in the local configuration.
  • the mobility management network element Indicates whether the mobility management network element supports online account opening; if the first mobility management network element selects the second mobility management network element that supports online account opening according to the NF configuration file information of the network storage network element, before this step, it needs to be stored in the network storage.
  • the online account opening capability information of each mobility management network element is configured in the NF configuration file of the network element.
  • the first mobility management network element may obtain the above online account opening instruction information through the UE context. Specifically, before the first mobility management network element obtains the online account opening instruction information from the UE context, according to the online account opening instruction information obtained from the N2 or N14 message, or according to the "SNPN online account opening (SNPNonboarding)" registration type, in The online account opening instruction information is stored in the UE context.
  • the redirection of the mobility management network element may not occur, so the online The account opening instruction information is stored in the UE context, and when the mobile management network element redirection occurs, the online account opening instruction information is obtained from the UE context; or, when the AMF redirection has occurred, the N14 message is received, but In order to subsequently use the online account opening indication information in the N14 message, the online account opening indication information is first saved in the UE context.
  • S602. Determine whether the second mobility management network element supports online account opening and registration.
  • the first mobility management network element determines whether the second mobility management network element supports online account opening.
  • the first mobile network element cannot know the support of the second mobility management network element for online account opening, and it is necessary to further determine whether the second mobility management network element supports online account opening in S602. Online account opening and registration; if S601 is performed by the first mobility management network element, when the first mobility management network element selects the second mobility management network element, it can know whether the second mobility management network element supports online account opening.
  • the first mobility management network element receives the second message sent by the second mobility management network element, the second message carries the online account opening capability information of the second mobility management network element, and the first mobility management network element according to the above-mentioned second mobility management
  • the online account opening capability information of the network element determines whether the second mobility management network element supports online account opening.
  • the foregoing second message may specifically be a request to acquire UE context message, or a UE context establishment response message, which is not limited in this embodiment of the present application.
  • the first mobility management network element queries local configuration information, and determines whether the second mobility management network element supports online account opening according to the online account opening capability information of the second mobility management network element in the local configuration information.
  • S602 may specifically be divided into S602a and S602b.
  • the second mobility management network element supports online account opening, then continue to execute S603.
  • the first mobility management network element determines whether it has started the first de-registration timer, if it has started the first de-registration timer, then continue to execute S604; if it has not started the first de-registration timer, then continue to execute S604'.
  • the first mobility management network element transmits the time information of the first de-registration timer on the first mobility management network element to the second mobility management network element.
  • the time information of the first de-registration timer on the first mobility management network element may be the elapsed time of the first de-registration timer on the first mobility management network element, or may be the time information of the first mobility management network element On the first go register the remaining time on the timer.
  • the first mobility management network element transmits the online account opening instruction information to the second mobility management network element.
  • the above online account opening instruction information is used to indicate that the terminal device is registering for online account opening or indicating that the terminal device is a terminal device registered for online account opening.
  • the first mobility management network element transmits online account opening instruction information to the second mobility management network element.
  • the first mobility management network element determines that the second mobility management network element does not support online account opening, no matter whether the first mobility management network element has started the first de-registration timer, it will report to the second mobility management network at S604"
  • the element transmits the online account opening indication information, so that the second mobility management network element saves the online account opening indication information in the UE context, and transmits the online account opening indication information to the mobility management network element supporting online account opening.
  • the second mobility management network element starts the second de-registration timer and continues to execute the remaining time of the de-registration timer.
  • the second mobility management network element starts the second de-registration timer according to the time information of the first de-registration timer on the first mobility management network element and continues to execute the remaining time of the first de-registration timer.
  • the time information of the first de-registration timer on the first mobility management network element may be the elapsed time of the first de-registration timer on the first mobility management network element, or the time information on the first mobility management network element The first to register the remaining time of the timer.
  • the second mobility management network element If the time information of the first de-registration timer on the first mobility management network element is the elapsed time of the first de-registration timer on the first mobility management network element, the second mobility management network element according to the local configuration information The remaining time is calculated from the initial value of the de-registration timer and the elapsed time of the de-registration timer. Specifically, an initial value of the de-registration timer is set in the local configuration of each mobility management network element. The initial value is the total execution time of the de-registration timer. This initial value also represents that ON-SNPN allows each The maximum time that a terminal device registered with online account opening can stay in ON-SNPN, for each mobility management network element that supports online account opening, the initial value in its local configuration information is the same.
  • the second mobility management network element starts a second de-registration timer.
  • the second mobility management network element starts the second de-registration timer according to the received online account opening indication information according to the local configuration information
  • the local configuration information includes the initial value of the de-registration timer, and this initial value represents ON-SNPN allows The maximum time that each online account registration terminal device can stay in ON-SNPN, for each mobile management network element that supports online account opening, the initial value in its local configuration information is the same.
  • the second mobility management network element saves the online account opening instruction information in the UE context.
  • the second mobility management network element since the second mobility management network element does not support online account opening, after receiving the online account opening instruction information, the second de-registration timer cannot be started according to the online account opening instruction information. At this time, the second mobility management network element saves the online account opening instruction information in the UE context, that is, when the N14 message obtains the online account opening instruction information, the mobility management network element redirection occurs, and the online account opening instruction information needs to be Saved in UE context. After the second mobility management network element initiates the relocation (relocation) of the mobility management network element, it sends the above-mentioned online account opening indication information to the new mobility management network element that supports online account opening through the UE context, so that the new mobility management network element starts to go Register timer.
  • the second mobility management network element that supports online account opening cannot be selected in S601, and it is determined in S602 that the second mobility management network element does not support online account opening. Whether the network element has started the first de-registration timer, the first mobility management network element does not transmit the time information of the first de-registration timer on the first mobility management network element or the online account opening instruction information to the second mobility management network element , and continue to execute the existing registration process; or, in S601, the second mobility management network element that supports online account opening cannot be selected, then in S602, the first mobility management network element determines that the second mobility management network element does not support online account opening, And in S603, the first mobility management network element has started the first de-registration timer.
  • the first mobility management network element may also transfer the first de-registration timer on the first mobility management network element to the second mobility management network element.
  • the second mobility management network element receives the time information of the first de-registration timer on the first mobility management network element, it ignores or deletes the information and continues the registration process.
  • the online account opening instruction information is delivered to the reselected mobility management network element that supports online account opening.
  • the de-registration method of the embodiment of the present application by selecting the second mobility management network element that supports online account opening, and setting the time information of the first de-registration timer on the first mobility management network element of the first mobility management network element or the online
  • the account opening instruction information is transmitted to the second mobility management network element, so that the second mobility management network element can start the de-registration timer after the mobility management network element is redirected.
  • the de-registration timer expires, the de-registration process is triggered.
  • the registration information of the terminal device is deregistered on the SNPN and triggers the release of the PDU session, thereby preventing the terminal device from infinitely staying on the ON-SNPN.
  • Fig. 7 shows a schematic flowchart of the de-registration method provided by the embodiment of the present application.
  • the method may be applied to the system architecture shown in FIG. 1 to FIG. 3 , and may also be applied to the system architecture shown in FIG. 5 , and the embodiment of the present application is not limited thereto.
  • the method shown in FIG. 7 may include the following steps.
  • the first mobility management network element determines whether the second mobility management network element supports online account opening.
  • the first mobility management network element receives the second message sent by the second mobility management network element, the second message carries the online account opening capability information of the second mobility management network element, and the first mobility management network element according to the above-mentioned second mobility management
  • the online account opening capability information of the network element determines whether the second mobility management network element supports online account opening.
  • the foregoing second message may specifically be a request to acquire UE context message, or a UE context establishment response message, which is not limited in this embodiment of the present application.
  • the first mobility management network element queries local configuration information, and determines whether the second mobility management network element supports online account opening according to the online account opening capability information of the second mobility management network element in the local configuration information.
  • the first mobility management network element obtains the online account opening instruction information, and queries local configuration information according to the online account opening instruction information to select a second mobility management network element that supports online account opening.
  • the first mobility management network element obtains the online account opening instruction information, and finds and selects the second mobility management network element that supports online account opening by querying the network storage network element according to the online account opening instruction information.
  • the local configuration information is used to determine whether the second mobility management network element supports online account opening, or to select the second mobility management network element that supports online account opening, the above-mentioned second mobility management network element needs to be configured in the local configuration information in advance.
  • Online account opening capability information if the second mobile management network element that supports online account opening is found and selected by querying the NRF NF configuration file information, the above-mentioned second mobile management network element online account opening capability information needs to be configured in the network storage network element in advance.
  • the first mobility management network element sends a first message to the second mobility management network element according to the second mobility management network element's support for online account opening, the first message carries first information, and the first information The online account opening instruction information or the time information of the first de-registration timer on the first mobility management network element.
  • the online account opening instruction information is used to indicate that the terminal device is registering for online account opening, or indicates that the terminal device is a terminal device for online account opening and registration;
  • the time information of the first de-registration timer on the first mobile management network element is used Indicates the elapsed time or remaining time of the first de-registration timer on the first mobility management network element.
  • the first mobility management network element determines that the second mobility management network element supports online account opening, and the first mobility management network element sends the message to the second mobility management network element according to whether it has started the first de-registration timer.
  • the type of the first information carried in the first message specifically, if the first mobility management network element has not started the first de-registration timer, the online account opening instruction is carried in the first message sent to the second mobility management network element information; or, if the first mobility management network element has started the first de-registration timer, the first message sent to the second mobility management network element carries the first de-registration timer on the first mobility management network element device time information.
  • the first message may specifically be a UE context acquisition response message, or a UE context establishment request message, or an N2 message notification confirmation message, which is not limited in this embodiment of the present application.
  • the first mobility management network element determines that the second mobility management network element does not support online account opening, then in S702, the first mobility management network element is still sending the first mobility management network element to the second mobility management network element.
  • the message carries online account opening instruction information or time information of the first de-registration timer on the first mobility management network element.
  • the second mobility management network element saves the received online account opening instruction information in the UE context, and transmits the online account opening instruction information to the mobile management network element that supports online account opening when the next mobility management network element is redirected or reconfigured; Or the second mobility management network element ignores or deletes the message, and sends the time information of the de-registration timer to the mobility management network element supporting online account opening in other ways when the next mobility management network element is redirected or reconfigured.
  • the de-registration method in the embodiment of the present application can ensure that the mobile management network can ensure that the mobile management After the network element is redirected, the de-registration timer can still be started on the new mobility management network element. After the de-registration timer expires, the de-registration process is triggered, the registration information of the terminal device is deregistered on the ON-SNPN, and the PDU session is triggered. release, thereby preventing end-devices from indefinitely camping on the ON-SNPN.
  • FIG. 8 shows a schematic flow chart of the de-registration method provided by the embodiment of the present application.
  • the method may be applied to the system architecture shown in FIG. 1 to FIG. 3 , and may also be applied to the system architecture shown in FIG. 5 , and the embodiment of the present application is not limited thereto.
  • the method shown in FIG. 8 may include the following steps.
  • the second mobility management network element receives a first message sent by the first mobility management network element, where the first message carries first information.
  • the first information may be time information of the first de-registration timer on the first mobility management network element, and the time information of the first de-registration timer on the first mobility management network element is used to indicate that the first mobile Manage the elapsed or remaining time of the first de-registration timer on the network element; or, the first information may be online account opening indication information, and the above online account opening indication information is used to indicate that the terminal device is performing online account opening registration or indicate that the terminal The device is a terminal device for online account opening and registration.
  • the time information of the first de-registration timer on the first mobility management network element may specifically be the elapsed time or the remaining time of the first de-registration timer on the first mobility management network element.
  • the second mobility management network element starts a second de-registration timer according to the first information.
  • the second mobility management network element starts a second de-registration timer according to the first information and its own online account opening capability information.
  • starting the second de-registration timer above can be understood as the second mobility management network element starts the second de-registration timer according to the online account opening instruction information, and can also be understood as the second mobility management network element starts the second de-registration timer according to the first mobility management network
  • the time information of the first de-registration timer on the element starts the second de-registration timer and executes the remaining time of the first de-registration timer.
  • the second mobility management network element For example, if the second mobility management network element supports online account opening, and the first information carried in the received first message is online account opening indication information, the second mobility management network element starts the de-registration timer according to the online account opening indication information. In another example, if the second mobility management network element supports online account opening, and the first information carried in the received first message is the time information of the first de-registration timer on the first mobility management network element, then according to the first The time information of the first de-registration timer on the mobility management network element starts the second de-registration timer and continues to execute the remaining time of the first de-registration timer.
  • the second mobility management network element When the time information of the first de-registration timer on the first mobility management network element is used to indicate the elapsed time of the first de-registration timer on the first mobility management network element, the second mobility management network element according to the local The initial value of the de-registration timer in the configuration information and the elapsed time of the first de-registration timer calculate the remaining time. Specifically, an initial value of the de-registration timer is set in the local configuration of each mobility management network element. The initial value is the total execution time of the de-registration timer. This initial value also represents that ON-SNPN allows each The maximum time that a terminal device registered with online account opening can stay in ON-SNPN, for each mobility management network element that supports online account opening, the initial value in its local configuration information is the same.
  • the second mobility management network element will receive The received online account opening instruction information is stored in the UE context, and a registration response message is sent to the terminal device.
  • the above registration response message is used to indicate that the registration is successful, and when the next mobility management network element is reconfigured (relocation), the online account opening
  • the indication information is passed to the new mobility management network element through the UE context; or, if the second mobility management network element does not support online account opening, and the first information carried in the received first message is
  • the second mobility management network element ignores or deletes the received time information of the first deregistration timer on the first mobility management network element, and repeats the time information on the next mobility management network element During orientation or reconfiguration, the first information is delivered to the mobile management network element supporting online account opening by other means.
  • the de-registration methods shown in Fig. 6 to Fig. 8 can be applied in the handover process when the terminal device is in the connected state; they can also be applied in the mobility registration process when the terminal device is in the idle state.
  • the first mobile management network element described in Fig. 6 to Fig. 8 may be an Old AMF network element or an S-AMF network element
  • the second mobile management network element may be a New
  • the AMF network element may also be a T-AMF network element
  • the access network element may be a RAN, which is not limited in this embodiment of the present application.
  • the foregoing network elements may also have other names, which are not specifically limited in this embodiment of the present application.
  • some or all of the foregoing network elements may use terms in 5G, or may use other names, which are not limited in this embodiment of the present application.
  • FIG. 9 shows a schematic flowchart of another de-registration method provided by the embodiment of the present application.
  • the method may be applied to the system architecture shown in FIG. 1 to FIG. 3 , and may also be applied to the system architecture shown in FIG. 5 , and the embodiment of the present application is not limited thereto.
  • the terminal device UE sends RRC signaling to the RAN.
  • the RRC signaling carries online account opening instruction information.
  • the online account opening instruction information is used to indicate that the terminal device is registering for online account opening or indicating that the terminal device is a terminal device for online account opening registration.
  • the RRC signaling may also carry a registration request message.
  • the above-mentioned registration request message may include registration type (Mobility Registration) information, which is used to indicate the type of ongoing registration; optionally, the registration request message may also include 5G-Globally Unique Temporary UE identifier (5G Globally Unique Temporary UE Identity, 5G-GUTI); or, Subscription Concealed Identifier (SUCI); or Permanent Equipment Identifier (Permanent Equipment Identifier, PEI).
  • registration type Mobility Registration
  • 5G-Globally Unique Temporary UE Identity 5G Globally Unique Temporary UE Identity, 5G-GUTI
  • SUCI Subscription Concealed Identifier
  • PEI Permanent Equipment Identifier
  • the RAN selects a New AMF according to the onboarding indication in the RRC signaling.
  • the RAN sends an N2 message to the New AMF, and the N2 message carries the online account opening instruction information and the registration request message in S901.
  • the New AMF sends a UE context acquisition request message to the Old AMF to request to acquire the UE context, and the acquisition context request message carries the registration request message in S903.
  • the New AMF determines the OldAMF according to the 5G-GUTI in the registration request information.
  • the New AMF receives the NID in the registration request message, use the 5G-GUTI and the NID to determine the Old AMF.
  • the UE context acquisition request message may carry online account opening capability information of the New AMF, and the online account opening capability information is used to indicate whether the New AMF supports online account opening.
  • the Old AMF determines whether the New AMF supports online account opening.
  • the Old AMF determines whether the New AMF supports online account opening according to the online account opening capability information.
  • the Old AMF can also determine whether the New AMF supports online account opening by querying local configuration information. At this point, the online account opening capability information of the New AMF needs to be pre-configured in the local configuration information of the Old AMF.
  • the Old AMF determines that the New AMF does not support online account opening, it continues to execute the existing registration process.
  • the above existing registration process means that the message transmission process does not carry any information related to the de-registration timer.
  • the Old AMF sends a UE context acquisition response message to the New AMF, where the UE context acquisition response message carries time information of the first de-registration timer on the first mobility management network element or online account opening indication information.
  • the Old AMF determines that the UE context acquisition response message sent to the New AMF specifically carries the time information of the first de-registration timer on the Old AMF, or the online account opening indication information.
  • the time information of the first de-registration timer on the Old AMF may include the elapsed time of the first de-registration timer on the Old AMF; or, the time of the first de-registration timer on the Old AMF
  • the information may include the remaining time of the first de-registration timer on the Old AMF.
  • an initial value of the de-registration timer can be set in the local configuration of each AMF.
  • the initial value is the total execution time of the de-registration timer. This initial value also represents that ON-SNPN allows each online The maximum time that a terminal device for account opening and registration can stay in ON-SNPN, for each mobility management network element that supports online account opening, the initial value in its local configuration information is the same.
  • the New AMF may calculate the remaining time according to the initial value and the elapsed time of the first de-registration timer in the time information of the first de-registration timer on the Old AMF.
  • S906 may be S906a or S906b.
  • the UE context acquisition response message sent to the New AMF carries the time information of the first de-registration timer on the Old AMF.
  • the UE Context Obtaining Response message sent to the New AMF carries online account opening indication information.
  • the New AMF performs subsequent steps according to whether it supports online account opening and obtains the UE context response message in S906.
  • S907 may be S907a, S907b, S907c or S907d.
  • New AMF starts the second and goes to register the timer and continues to execute the remaining time of the first to go to register the timer.
  • the New AMF starts a second de-registration timer.
  • the New AMF starts the second de-registration timer according to the time information of the de-registration timer on the Old AMF and the initial value of the de-registration timer in the local configuration and continues to execute the remaining time of the first de-registration timer.
  • the New AMF will pass the online account opening indication information stored in the UE context to the new AMF that supports online account opening through the UE context;
  • the AMF for online account opening delivers first information.
  • the New AMF sends a registration response message to the terminal device UE.
  • the registration response message may be a "registration accept (Registration Accept)" response message.
  • the AMF triggers a de-registration process, deregisters the terminal device from the SNPN, and triggers the release of the PDU session of the terminal device.
  • the time information of the first de-registration timer on the Old AMF or the online account opening instruction information on the Old AMF is transmitted to the account-supporting online account through the Old AMF New AMF, make sure that New AMF can start to register the timer.
  • the AMF triggers the de-registration process, cancels the registration information of the terminal device on the ON-SNPN, and triggers the release of the PDU session, thereby preventing the terminal device from infinitely resident on the ON-SNPN.
  • FIG. 10 and FIG. 11 respectively show schematic flowcharts of the handover preparation phase and the handover execution phase of another de-registration method provided by the embodiment of the present application.
  • the method may be applied to the system architecture shown in FIG. 1 to FIG. 3 , and may also be applied to the system architecture shown in FIG. 5 , and the embodiment of the present application is not limited thereto.
  • the S-NG-RAN decides to perform handover through the N2 interface.
  • the S-NG-RAN sends a handover request message to the S-AMF.
  • the S-AMF selects the T-AMF.
  • the S-AMF needs to acquire online account opening indication information first, and the online account opening indication information is used to indicate that the terminal equipment UE is registering for online account opening.
  • the S-AMF can obtain the online account opening instruction information by obtaining the UE context; or, the S-AMF can obtain the online account opening instruction information by receiving the N2 message sent by the S-NG-RAN; or, the S-AMF can pass "SNPNonboarding "Registration type information to obtain online account opening instruction information, the above registration type information can be included in the registration request information sent by S-NG-RAN to S-AMF; or, S-AMF can obtain online account opening instructions through N14 messages sent by other AMFs information.
  • the S-AMF can select the T-AMF according to the online account opening instruction information combined with the local configuration information. It should be noted that if the S-AMF selects the T-AMF through the local configuration information, before this step, it needs to be in the local configuration. Pre-set information about whether AMF supports online account opening.
  • the S-AMF can also select the T-AMF according to the online account opening instruction information combined with the NRF information query. It should be noted that if the S-AMF selects the T-AMF through the NRF information, before this step, it is necessary to select the T-AMF in the NRF Configure whether AMF supports online account opening.
  • the S-AMF sends a UE context creation request message to the T-AMF.
  • S1104 can be divided into S1104a and S1104b.
  • the S-AMF may carry the time information of the first de-registration timer on the S-AMF or the online account opening instruction information in the UE context creation request message sent to the T-AMF.
  • the time information of the first de-registration timer on the S-AMF may include the elapsed time of the first de-registration timer on the S-AMF; or, the time of the first de-registration timer on the S-AMF
  • the information may include the remaining time of the first de-registration timer on the S-AMF.
  • the S-AMF may determine the information carried in the UE context creation request message sent to the T-AMF according to whether it has started the de-registration timer. Specifically, if the S-AMF has started the first de-registration timer, the time information of the first de-registration timer on the S-AMF may be carried in the create UE context request message sent to the T-AMF; or, if If the S-AMF does not start the first de-registration timer, the UE context creation request message sent to the T-AMF may carry online account opening instruction information.
  • the T-AMF may subsequently start the second de-registration timer according to the received time information of the first de-registration timer on the S-AMF or the online account opening indication information; or, start the second de-registration timer and Continue to execute the remaining time of the first de-registration timer; or save the online account opening indication information in the UE context; or ignore the time information of the first de-registration timer on the S-AMF.
  • an initial value of the de-registration timer can be set in the local configuration of each AMF.
  • the initial value is the total execution time of the de-registration timer.
  • This initial value also represents that ON-SNPN allows each online
  • the maximum time that a terminal device for account opening and registration can stay in ON-SNPN, for each mobility management network element that supports online account opening, the initial value in its local configuration information is the same. If the time information of the first de-registration timer on the S-AMF is the elapsed time of the first de-registration timer on the S-AMF, then the T-AMF Calculate the remaining time based on the elapsed time on the device.
  • the UE context creation request message sent by the S-AMF to the T-AMF does not carry information about the de-registration timer.
  • the T-AMF selected by the S-AMF supports online account opening, but the UE context creation request message sent by the S-AMF to the T-AMF in S1104b does not carry information about the de-registration timer.
  • the T-AMF sends a PDU session context update request message to the SMF.
  • the SMF selects the UPF.
  • SMF sends N4 session change request message to PSA-UPF, and receives N4 session change response message from PSA-UPF; SMF sends N4 session establishment request message to T-UPF, and receives N4 session establishment response message from T-UPF.
  • the SMF sends a PDU session context update response message to the T-AMF.
  • the T-AMF monitors the PDU session switching response message
  • the T-AMF sends a handover request message to the T-NG-RAN;
  • the T-AMF receives the handover request response message sent by the T-NG-RAN;
  • T-AMF sends PDU session context update request message to SMF;
  • SMF sends N4 session change request message to T-UPF, and receives N4 session change response message from T-UPF;
  • SMF sends N4 session change request message to S-UPF , and receive N4 session change response message from S-UPF;
  • SMF sends PDU session context update response message to T-AMF;
  • the T-AMF sends a create UE context response message to the S-AMF.
  • S1104 is S1104b, at this time
  • the Create UE Context Response message in S1113 may carry T-AMF’s online account opening capability information to indicate whether T-AMF supports online account opening, and then the S-AMF may send the S-AMF in S1206 according to the T-AMF’s online account opening capability information.
  • the N2 notification confirmation message sent to the T-AMF may carry the time information of the first de-registration timer on the S-AMF or the online account opening indication information.
  • the S-AMF may determine the information carried in the N2 message sent to the T-AMF according to whether it has started the first de-registration timer. Specifically, if the S-AMF has started the first de-registration timer, the N2 message notification confirmation message sent to the T-AMF carries the time information of the first de-registration timer on the S-AMF; if the S-AMF If the first de-registration timer is not started, the online account opening indication information is carried in the N2 message notification confirmation message sent to the T-AMF.
  • the T-AMF that supports online account opening can subsequently start the second de-registration timer according to the received time information of the first de-registration timer on the S-AMF or the online account opening indication information, or start the second de-registration timer timer and continue to execute the remaining time of the first de-registration timer.
  • an initial value of the de-registration timer is set in the local configuration of each AMF.
  • the initial value is the total execution time of the de-registration timer.
  • This initial value also represents that ON-SNPN allows each online account opening The maximum time that a registered terminal device can stay in ON-SNPN, for each mobile management network element that supports online account opening, the initial value in its local configuration information is the same. If the time information of the first de-registration timer on the S-AMF is the elapsed time of the de-registration timer on the S-AMF, then the T-AMF The elapsed time calculates the remaining time.
  • the N2 message notification confirmation message sent to the T-AMF in S1206 may still carry the time information of the first de-registration timer on the S-AMF or Online account opening instructions.
  • the T-AMF ignores the first de-registration timer on the S-AMF.
  • the time information of the registration timer if the N2 message notification confirmation message received by the T-AMF that does not support online account opening carries the online account opening indication information, the T-AMF will save the online account opening indication in the UE context, so that the next time During AMF redirection or AMF relocation, transmit the online account opening instruction information in the UE context to the subsequent new AMF.
  • the existing registration process will be executed, that is, neither S1104a nor S1206 involved in the embodiment of this application will pass the de-registration timing Device related information.
  • the online account opening instruction information or the time information of the first de-registration timer on the S-AMF is delivered to the AMF supporting online account opening by other means.
  • the de-registration method of the embodiment of the present application selects a T-AMF that supports online account opening, and transmits the time information of the first de-registration timer on the S-AMF of the S-AMF or the online account opening indication information to the T-AMF, Make sure that the deregistration timer can continue to be performed on the T-AMF.
  • the AMF triggers the de-registration process, cancels the registration information of the terminal device on the ON-SNPN, and triggers the release of the PDU session, thereby preventing the terminal device from infinitely resident on the ON-SNPN.
  • Figure 12 shows a schematic flowchart of how to configure AMF online account opening capability information in NRF in another de-registration method provided by the embodiment of the present application.
  • the method of the embodiment of the present application is used in the NF configuration file of NRF without AMF In the case of online account opening capability information, add AMF's online account opening capability information in the NF configuration file.
  • the AMF sends an NF registration request message to the NRF.
  • the NF registration request message carries the identification information of the AMF and the online account opening capability information of the AMF, and the online account opening capability information of the AMF is used to indicate whether the AMF supports online account opening.
  • the NRF stores the identification information of the AMF and the online account opening capability information of the AMF in the NF configuration file.
  • the NRF sends an NF registration response message to the AMF.
  • the AMF online account opening capability information is added in the NRF NF configuration file through the NF registration request message, so that the S-AMF in S1103 can find and select a T-AMF that supports online account opening by querying the NRF, and then In the step, the time information of the first de-registration timer on the S-AMF of the S-AMF or the online account opening instruction information is transmitted to the T-AMF to ensure that the de-registration timer can continue to be executed on the T-AMF.
  • the AMF triggers the de-registration process, cancels the registration information of the terminal device on the ON-SNPN, and triggers the release of the PDU session, thereby preventing the terminal device from infinitely resident on the ON-SNPN.
  • Figure 13 shows a schematic flow chart of how to update AMF online account opening capability information in NRF in another de-registration method provided by the embodiment of the application.
  • the method in the embodiment of the application is used in the NF configuration file of NRF.
  • AMF online account opening capability information but if the situation of whether AMF supports online account opening changes, update the AMF online account opening capability information in the NF configuration file of NRF.
  • the AMF sends a NF update request message to the NRF.
  • the NF update request message may carry the identification information of the AMF and the online account opening capability information of the AMF, and the online account opening capability information of the AMF is used to indicate whether the AMF supports online account opening.
  • the NRF updates the identification information of the AMF and the online account opening capability information of the AMF in the NF configuration file.
  • the NRF sends an NF update response message to the AMF.
  • the identification information of the above-mentioned AMF may be a fully qualified domain name (Fully Qualified Domain Name, FQDN), a globally unique identifier (Globally Unique AMF Identifier, GUAMI) and an IP address, etc., which are not limited in this embodiment of the present application.
  • FQDN Fully Qualified Domain Name
  • GUAMI Globally Unique AMF Identifier
  • IP address etc.
  • the AMF online account opening capability information is updated in the NRF NF configuration file through the NF update request message, so that the S-AMF in S1103 finds and selects a T-AMF that supports online account opening by querying the NRF, and in subsequent steps In the S-AMF, the time information of the first de-registration timer on the S-AMF or the online account opening indication information is transmitted to the T-AMF, so as to ensure that the de-registration timer can continue to be executed on the T-AMF.
  • the AMF triggers the de-registration process, cancels the registration information of the terminal device on the ON-SNPN, and triggers the release of the PDU session, thereby preventing the terminal device from infinitely resident on the ON-SNPN.
  • Fig. 14 shows a schematic flow chart of how to query the information of AMF instances supporting online account opening in the NRF in another de-registration method provided by the embodiment of the present application.
  • the AMF sends an NF discovery request message to the NRF.
  • the NF discovery request message may carry AMF NF type information and online account opening indication information, the above online account opening indication information is used to indicate that the terminal device is registering for online account opening or indicates that the terminal device is a terminal device for online account opening registration.
  • the NRF authenticates the NF discovery request, and queries the AMF instances that support online account opening.
  • the above-mentioned AMF example includes: AMF file, which contains basic information of AMF, such as IP address, provided services and other information. Based on this, the S-AMF can find the IP address of the T-AMF.
  • the NRF sends an NF discovery response message to the AMF, where the NF discovery response message carries the information of the AMF instance that supports online account opening queried in S1702.
  • the S-AMF in S1103 selects the T-AMF that supports online account opening by querying the AMF instance information that supports online account opening in the NRF through the discovery request, and transfers the T-AMF on the S-AMF to The time information of the de-registration timer or the online account opening instruction information is transmitted to the T-AMF to ensure that the de-registration timer can continue to be executed on the T-AMF.
  • the AMF triggers the de-registration process, cancels the registration information of the terminal device on the ON-SNPN, and triggers the release of the PDU session, thereby preventing the terminal device from infinitely resident on the ON-SNPN.
  • sequence numbers of the above processes do not mean the order of execution, and the execution order of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.
  • the method provided by the embodiment of the present application is described in detail above with reference to FIG. 1 to FIG. 14 .
  • the communication device provided by the embodiment of the present application will be described in detail below with reference to FIG. 15 to FIG. 16 . It should be understood that the descriptions of the device embodiments correspond to the descriptions of the method embodiments. Therefore, for details that are not described in detail, reference may be made to the method embodiments above. For brevity, details are not repeated here.
  • FIG. 15 shows a schematic block diagram of an apparatus for de-registration provided by an embodiment of the present application.
  • the apparatus 2000 includes a transceiver unit 2010 and a processing unit 2020 .
  • the transceiver unit 2010 can implement a corresponding communication function, and the processing unit 2020 is used for data processing.
  • the transceiver unit 2010 may also be called a communication interface or a communication unit.
  • the apparatus 2000 may further include a storage unit, which may be used to store instructions and/or data, and the processing unit 2020 may read the instructions and/or data in the storage unit, so that the apparatus implements the aforementioned method embodiments .
  • a storage unit which may be used to store instructions and/or data
  • the processing unit 2020 may read the instructions and/or data in the storage unit, so that the apparatus implements the aforementioned method embodiments .
  • the apparatus 2000 can be used to execute the actions performed by the network device in the above method embodiments.
  • the apparatus 2000 can be a network device or a component that can be configured in the network device, and the transceiver unit 2010 is used to execute the above method embodiments.
  • the processing unit 2020 is configured to perform operations related to the processing of the network device in the above method embodiments.
  • the apparatus 2000 is a first mobility management network element
  • the transceiver unit 2010 and the processing unit 2020 can support actions performed by the first mobility management network element in the above method example.
  • the processing unit 2020 is used to determine whether the second mobility management network element supports online account opening and registration
  • the transceiver unit 2010 is used to send a first message to the second mobility management network element, the first message carries first information, and the first information It is used to instruct the second mobility management network element to start the second de-registration timer.
  • the processing unit 2020 determines whether the second mobility management network element supports online account opening according to the acquired online account opening capability information of the second mobility management network element.
  • the transceiver unit 2010 receives the second message sent by the second mobility management network element, the second message carries the online account opening capability information of the second mobility management network element, and the processing unit 2020 opens an account online according to the above-mentioned second mobility management network element
  • the capability information determines that the second mobility management network element supports online account opening.
  • the above-mentioned second message may specifically be a UE context acquisition request message, or a UE context creation response message, which is not limited in this application.
  • the processing unit 2020 queries local configuration information, and determines that the second mobility management network element supports online account opening according to the online account opening capability information of the second mobility management network element in the local configuration information.
  • the processing unit 2020 selects a second mobility management network element that supports online account opening according to the online account opening instruction information.
  • the processing unit 2020 may acquire the online account opening indication information through the UE context.
  • the processing unit 2020 saves the online account opening indication information in the UE context according to the online account opening indication information obtained from the N2 or N14 message, or according to the "SNPN online account opening (SNPNonboarding)" registration type. Account opening instructions.
  • the processing unit 2020 selects a second mobility management network element that supports online account opening by querying local configuration information according to the received online account opening indication information.
  • the processing unit 2020 finds and selects a second mobility management network element that supports online account opening by querying network storage function network element information according to the received online account opening instruction information.
  • the transceiver unit 2010 sends a second request message to the network storage network element, and the second request message is used to instruct the network storage network element to search for a mobile management network element instance that supports online account opening; the transceiver unit 2010 receives the request message sent by the network storage network element.
  • the second response message, the second response message carries the instance information of the mobile management network element that supports online account opening found by the network storage network element, and the processing unit 2020 selects the mobile management network element that supports online account opening according to the instance information of the mobile management network element.
  • the second mobility management network element is used to instruct the network storage network element to search for a mobile management network element instance that supports online account opening; the transceiver unit 2010 receives the request message sent by the network storage network element.
  • the second response message the second response message carries the instance information of the mobile management network element that supports online account opening found by the network storage network element, and the processing unit 2020 selects the mobile management network element that supports online account opening according to the instance information of the mobile management network element.
  • the first information carried in the first message sent by the transceiver unit 2010 to the second mobility management network element may specifically be online account opening indication information, and the above online account opening indication information is used to indicate that the terminal device is performing online account opening registration or indicate that the terminal device
  • the device is a terminal device for online account opening and registration; or, the first information may specifically be the time information of the first de-registration timer on the first mobility management network element, the first de-registration timer on the first mobility management network element
  • the time information of is used to indicate the elapsed time or the remaining time of the de-registration timer on the communication device 2000.
  • the processing unit 2020 is further configured to determine whether the first message sent by the transceiver unit 2010 to the second mobility management network element specifically carries the online account opening indication information according to whether the communication device 2000 has executed the de-registration timer, or whether it is the first mobile management network element.
  • Time information of the first de-registration timer on the element if the communication device 2000 does not start the first de-registration timer, the first message transmitted by the transceiver unit 2010 to the second mobility management network element carries online account opening instruction information; or, If the communication device 2000 has started the de-registration timer, the first message transmitted by the transceiver unit 2010 to the second mobility management network element carries time information of the first de-registration timer on the first mobility management network element.
  • the first message may specifically be a UE context acquisition response message, or a UE context establishment request message, or an N2 message notification confirmation message, which is not limited in this embodiment of the present application.
  • the original mobility management network element cannot continue to serve the terminal device.
  • the mobility management network element needs to be selected again, that is, mobility management Network element redirection.
  • the mobility management network element redirection process may occur during the terminal equipment mobility registration process, that is, the terminal equipment is in an idle state at this time, then the process of selecting the second mobile network element will be performed by the access network element, at this time , the processing unit 2020 needs to determine that the second mobility management network element supports online account opening before delivering the first information to it; or, the mobility management network element redirection process may occur during the handover process, that is, the terminal device is in the connected state at this time , then the process of selecting the second mobile network element will be executed by the processing unit 2020.
  • the processing unit 2020 selects the second mobility management network element, it can directly select the second mobility management network element that supports online account opening, and then transfer the The first information, that is, no additional step of determining whether the second mobility management network element supports online account opening is no longer required at this time.
  • the terminal device may move to an area that does not support online account opening, that is, the second mobile management network element that supports online account opening cannot be selected at this time.
  • the access network element or processing unit 2020 select the second mobility management network element that does not support online account opening, and continue to execute the existing registration process; or the transceiver unit 2010 still sends the first de-registration timer on the first mobility management network element to the second mobility management network element Time information or online account opening instruction information, but the second mobility management network element cannot start the second de-registration timer according to the above information.
  • the terminal device moves to an area that supports online account opening, select a mobility management network element that supports online account opening, and transmit the first information to the mobile management network element that supports online account opening.
  • the apparatus 2000 is a second mobility management network element, and the transceiver unit 2010 and the processing unit 2020 can support actions performed by the second mobility management network element in the above method example.
  • the transceiver unit 2010 is also configured to receive a first message from the first mobility management network element, the above-mentioned first message may carry first information, and the first information may specifically be online account opening instruction information or information on the first mobility management network element.
  • the time information of the first de-registration timer; the processing unit 2020 is used to determine whether the communication device 2000 supports online account opening, and perform subsequent operations according to the received first message and whether the communication device 2000 supports online account opening.
  • the first message may specifically be a UE context acquisition response message, or a UE context establishment request message, or an N2 message notification confirmation message, which is not limited in this embodiment of the present application.
  • the processing unit 2020 determines that the communication device 2000 supports online account opening, and the first information carried in the first message received by the transceiver unit 2010 is the time information of the first de-registration timer on the first mobility management network element, then processing The unit 2020 starts the second de-registration timer according to the time information of the first de-registration timer on the first mobility management network element and continues to execute the remaining time of the first de-registration timer.
  • the processing unit 2020 determines that the communication device 2000 supports online account opening, and the first message received by the transceiver unit 2010 carries online account opening instruction information, then the processing unit 2020 starts the second de-registration timer according to the online account opening instruction information.
  • the processing unit 2020 determines that the communication device 2000 does not support online account opening, and the first information carried in the first message received by the transceiver unit 2010 is the time information of the first de-registration timer on the first mobility management network element, Then the processing unit 2020 ignores the time information of the first de-registration timer on the first mobility management network element. And when the mobility management network element is redirected or reconfigured next time, the first information is transmitted to the mobility management network element supporting online account opening.
  • the processing unit 2020 determines that the communication device 2000 does not support online account opening, and the first information carried in the first message received by the transceiver unit 2010 is online account opening indication information, the processing unit 2020 keeps the online account opening indication information in the UE context middle. And when the mobility management network element is redirected or reconfigured next time, the first information is transmitted to the mobility management network element supporting online account opening through the UE context.
  • the transceiving unit 2010 is configured to send a second message to the first mobility management network element, where the second message carries the online account opening capability information of the second mobility management network element.
  • the online account opening capability information of the second mobility management network element is used to indicate whether the second mobility management network element supports online account opening.
  • the second message may be a UE context request message, or a UE context creation response message, or other messages carrying the online account opening capability information of the second mobility management network element, which is not limited in this embodiment of the present application.
  • the transceiver unit 2010 may also be configured to send an NF registration request message or an NF update request message to the network storage network element, where the NF registration request message is used to request to register with the network storage network element for the registration of the second mobility management network element.
  • Configuration information, the above-mentioned NF update request message is used to request to update the configuration information of the above-mentioned second mobility management network element to the above-mentioned network storage network element, and the above-mentioned NF registration request message or NF update request message carries the identification information of the second mobility management network element and the first 2.
  • the transceiver unit 2010 is also used to receive the NF registration response message or NF update response message sent by the network storage network element, and the above NF registration response message or NF update response message is used to indicate that the network storage The network element has accepted the NF registration request message or the above NF update request message.
  • the transceiving unit 2010 may also be configured to send a registration response message to the terminal device.
  • the apparatus 2000 can implement the steps or processes corresponding to the execution of the network equipment (such as the mobile management network element AMF) in the method according to the embodiment of the present application, and the apparatus 2000 can include a method for executing the steps in FIG. 1, FIG. 6 to FIG. 11 A unit of the method performed by a network device (such as a mobility management network element AMF). Moreover, each unit in the apparatus 2000 and the above-mentioned other operations and/or functions are respectively for realizing the corresponding flow of the method embodiment of the network equipment (such as the mobility management network element AMF) in FIG. 1 , FIG. 6 to FIG. 11 .
  • the apparatus 2000 is a network storage network element, and the transceiver unit 2010 and the processing unit 2020 can support actions performed by the network storage network element in the foregoing method example.
  • the transceiver unit 2010 is used to receive the first request message sent by the mobility management network element; the transceiver unit 2010 is also used to send the first response message to the mobility management network element; the processing unit 2020 is used to save or update the network according to the first request message Stores the NF configuration files of network elements.
  • the first request message is specifically an NF registration request message, which may carry identification information of the mobility management network element and online account opening capability information, and the online account opening capability information is used to indicate whether the mobility management network element supports online account opening; the processing unit 2020 Specifically, it is used to add the identification information of the mobility management network element and the online account opening capability information in the first request message to the NF configuration file of the network storage network element.
  • the network storage network element NF configuration file originally does not have relevant information about online account opening of the mobility management network element.
  • the first request message is specifically an NF update request message, which may carry identification information of the mobility management network element and online account opening capability information, and the online account opening capability information is used to indicate whether the mobility management network element supports online account opening;
  • the processing unit 2020 is specifically used to update the identification information of the mobility management network element and the online account opening capability information in the first request message in the network storage network element NF configuration file.
  • the NF configuration file of the network storage network element originally has relevant information about online account opening of the above-mentioned mobile management network element, but the support for online account opening by the above-mentioned mobile management network element has changed, and the above-mentioned NF
  • the update request process updates the relevant information of the mobile management network element's support for online account opening in the NF configuration file of the network storage network element.
  • the transceiver unit 2010 may also be configured to receive a second request message sent by a mobility management network element, where the second request message is used to request to find an instance of a mobility management network element that supports online account opening, which may carry a mobility management network element NF type information and online account opening indication information, the above online account opening indication information is used to indicate that the terminal device is registering for online account opening or indicating that the terminal device is a terminal device for online account opening registration; the processing unit 2020 is specifically configured to, according to the received second request message Finding/discovering an instance of a mobility management network element that supports online account opening; the transceiver unit 2010 is also configured to send a second response message to the mobility management network element, where the second response message carries the instance information of the queried mobility management network element.
  • the above-mentioned second request message may be an NF discovery request message
  • the second response message may be an NF discovery response message
  • the second request message and the second response message may also be other messages, which are not limited in this embodiment of the present application.
  • the apparatus 2000 can implement the steps or processes corresponding to the execution of the network device (such as the network storage network element NRF) in the method embodiment according to the embodiment of the present application, and the apparatus 2000 can include a method for executing the A unit of the method executed by a network device (such as a network storage network element NRF). Moreover, each unit in the apparatus 2000 and the above-mentioned other operations and/or functions are respectively for realizing the corresponding flow of the method embodiment of the network device in FIG. 12 , FIG. 13 , and FIG. 14 .
  • the device 2000 here is embodied in the form of functional units.
  • the term "unit” here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor for executing one or more software or firmware programs (such as a shared processor, a dedicated processor, or a group processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality.
  • ASIC application specific integrated circuit
  • processor for executing one or more software or firmware programs (such as a shared processor, a dedicated processor, or a group processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality.
  • the apparatus 2000 in each of the above solutions has the function of implementing the corresponding steps performed by the first mobility management network element and the second mobility management network element in the above method; the functions can be implemented by hardware, or by executing corresponding software on the hardware.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the transceiver unit can be replaced by a transceiver, and other units, such as a determination unit, can be replaced by a processor to respectively perform the transceiver operations in each method embodiment and related processing operations.
  • the device in FIG. 15 may also be a chip or a chip system, for example: a system on chip (system on chip, SoC).
  • the receiving unit and the sending unit may be the transceiver circuits of the chip, which are not limited here.
  • the device in FIG. 15 in the embodiment of the present application can be implemented by the communication device 2200 in FIG. 16 and can be used to execute each of the corresponding first mobile storage network element or the second mobile management network element in the above method embodiment. steps and/or processes.
  • FIG. 16 shows another communication device 2200 provided by the embodiment of the present application.
  • the apparatus 2200 includes a processor 2210 , a transceiver 2220 and a memory 2230 .
  • the processor 2210, the transceiver 2220 and the memory 2230 communicate with each other through an internal connection path, the memory 2230 is used to store instructions, and the processor 2210 is used to execute the instructions stored in the memory 2230 to control the transceiver 2220 to send signals and /or to receive a signal.
  • the processor 2210 is used to determine whether the second mobility management network element supports online account opening; the transceiver 2220 is also used to send the first message to the second mobility management network element .
  • the first message may carry online account opening indication information, and the online account opening indication information is used to indicate that the terminal device is registering for online account opening or indicating that the terminal device is a terminal device for online account opening registration; or, the first message may also carry Time information of the first de-registration timer on the first mobility management network element, where the time information of the first de-registration timer on the first mobility management network element is used to indicate the first de-registration timer on the communication device 2000 The time that has elapsed or the remaining time; the processor 2210 is also used to judge whether the first mobility management network element has started the first de-registration timer, and determine the type of information carried in the first message sent by the transceiver 2220 according to the judgment result .
  • the transceiver 2220 is used to send a second message to the first mobility management network element, the second message carrying the online account opening capability information of the second mobility management network element;
  • the processor 2220 receives a first message from the first mobility management network element, the first message may carry online account opening indication information, or time information of the first de-registration timer on the first mobility management network element; the processor 2210, It is used to determine whether the communication device 2200 supports online account opening, and perform subsequent operations according to the received first message and whether the communication device 2200 supports online account opening.
  • the transceiver 2220 is configured to receive a first request message sent by the second mobility management network element, and the first request message is used to request to register the mobility management network element in the network storage network element identification information and online account opening capability information, or the first request message is used to request to update the identification information and online account opening capability information of the mobility management network element in the network storage network element; the transceiver 2220 is also used to send the second mobile management The network element sends a first response message, the above-mentioned first response message is used to indicate that the network storage network element has accepted the first request message; the processor 2210 is configured to save the mobile management network information in the NF configuration file according to the first request message The element identification information and the online account opening capability information of the second mobile management network element.
  • the transceiver 2220 is configured to receive a registration request message sent by a terminal, the registration request message carries online account opening instruction information, and the online account opening instruction information is used to indicate that the terminal device is opening an account online Register, or indicate that the terminal device is a terminal device registered for online account opening; the transceiver 2220 is also used to send an N2 message to the second mobility management network element, and the N2 message carries the online account opening indication information; the processor 2210 is used to Select the second mobility management network element according to the online account opening instruction information.
  • the memory 2230 may include read-only memory and random-access memory, and provide instructions and data to the processor.
  • a portion of the memory may also include non-volatile random access memory.
  • the memory may also store device type information.
  • the processor 2210 may be configured to execute instructions stored in the memory, and when the processor 2210 executes the instructions stored in the memory, the processor 2210 may be configured to execute the above method corresponding to the network storage network element or the mobility management network element Various steps and/or processes of the embodiments.
  • the above-mentioned transceiver may include a transmitter and a receiver.
  • the transceiver may further include antennas, and the number of antennas may be one or more.
  • Memory can be a separate device or integrated in the processor.
  • Each of the above-mentioned devices or some of the devices may be integrated into a chip, for example, integrated into a baseband chip.
  • the transceiver in FIG. 16 may also be a communication interface, which is not limited here.
  • names of request message, response message and other various messages are used.
  • these messages are only examples to illustrate the content to be carried or the functions to be implemented, and the specific names of the messages do not limit this application, for example: it can also be the first message, the first message, the third message, etc.
  • These messages may be specific messages, or some fields in the messages. These messages can also represent various service operations.
  • the processor of the above-mentioned device may be a central processing unit (central processing unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (digital signal processor, DSP) ), application specific integrated circuit (ASIC), field-programmable gate array (field-programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software.
  • the steps of the methods disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware processor, or implemented by a combination of hardware and software units in the processor.
  • the software unit may be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory, and the processor executes the instructions in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, no detailed description is given here.
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server, or data center Transmission to another website site, computer, server, or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL) or wireless (such as infrared, wireless, microwave, etc.).
  • the readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes one or more available media integrated.
  • the available medium can be a magnetic medium, (for example, a floppy disk, a hard disk, magnetic tape), optical media (for example, DVD), or semiconductor media (for example, solid state disk (solid state disk, SSD)), etc.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

Abstract

本申请提供了一种去注册的方法和通信装置，该方法可以包括：接收第一移动管理网元发送的第一消息，所述第一消息携带第一信息，所述第一信息为在线开户指示信息或者所述第一移动管理网元上的第一去注册定时器的时间信息；根据所述第一信息启动第二去注册定时器；所述第二去注册定时器到期时，触发去注册流程把终端设备从网络去注册。在本申请中，移动管理网元重定向后，通过向支持在线开户的移动管理网元传递第一信息，使得去注册定时器在新的支持在线开户的移动管理网元上仍能启动，当去注册定时器到期后，触发去注册流程，将终端设备从网络上去注册，从而防止终端设备在网络上的无限驻留。

Description

去注册的方法和通信装置
本申请要求于2021年08月06日提交中国专利局、申请号为202110902610.0、申请名称为“去注册的方法和通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种去注册的方法和通信装置。
背景技术
在R17阶段，标准支持终端设备使用默认凭证服务器(default credential sever，DCS)的凭证在在线开户独立部署非公共网络(Onboarding standalone non-public network，ON-SNPN)中进行SNPN在线开户(onboarding)注册。注册成功后，终端设备在ON-SNPN获取初始接入，AMF网元会启动去注册定时器，在去注册定时器到期后，触发终端设备从ON-SNPN去注册，以防止终端设备无限驻留在ON-SNPN。
当在ON-SNPN完成在线开户注册的终端设备，在ON-SNPN发生位置移动时，可能会导致AMF重定向。在AMF重定向后，如何在新的AMF上启动去注册定时器，以防止终端设备无限驻留在ON-SNPN是一个亟待解决的问题。
发明内容
本申请提供一种去注册的方法和通信装置，可以使在ON-SNPN完成在线开户注册的终端设备，在发生位置移动导致AMF重定向后，新的AMF启动去注册定时器，从而防止终端设备在ON-SNPN的无限驻留。
第一方面，提供了一种去注册的方法，该方法可以由网络设备执行，或者，也可以由用于网络设备的芯片或电路执行，本申请对此不作限定，为了便于描述，下面以由第二移动管理网元执行为例进行说明。
该方法可以包括：第二移动管理网元接收第一移动管理网元发送的第一消息，上述第一消息携带第一信息，该第一信息为在线开户(onboarding)指示信息或者所述第一移动管理网元上的第一去注册定时器的时间信息；第二移动管理网元根据上述第一信息启动第二去注册定时器；其中，上述第二去注册定时器到期时，触发去注册流程把终端设备从网络去注册。
具体地，在线开户指示信息用于指示终端设备正在进行在线开户注册，或者，用于指示终端设备为在线开户注册的终端设备；第一移动管理网元上的第一去注册定时器的时间信息用于指示第一移动管理网元上的第一去注册定时器已过去的时间或者剩余的时间。
可选地，第一消息具体可以为获取UE上下文响应消息，或者为建立UE上下文请求消息，或者为N2消息通知确认消息，本申请实施例对此不作限定。
本申请实施例的去注册的方法，通过第二移动管理网元从第一移动管理网元处获取第一移动管理网元上的第一去注册定时器的时间信息或者在线开户指示信息，使得在发生移动管理网元重定向后，第二移动管理网元仍然能够启动去注册定时器，去注册定时器到期后，触发去注册流程，在ON-SNPN上注销终端设备的注册信息，并触发PDU会话释放，从而防止终端设备无限驻留在ON-SNPN。
结合第一方面，在第一方面的某些实现方式中，该方法还包括：第二移动管理网元根据第一移动管理网元上的第一去注册定时器的剩余时间启动第二去注册定时器。
结合第一方面，在第一方面的某些实现方式中，该方法还包括：当第一移动管理网元上的第一去注册定时器的时间信息用于指示第一移动管理网元上的第一去注册定时器已过去的时间时，则根据第一移动管理网元上的第一去注册定时器的时间信息和本地配置确定所述第一移动管理网元上的第一去注册定时器的剩余时间。具体地，根据第一移动管理网元上的第一去注册定时器的时间信息和本地配置中的去注册定时器初始值确定去注册定时器的剩余时间，该初始值为去注册定时器的总执行时长，此初始值也代表ON-SNPN允许每个在线开户注册的终端设备能够在ON-SNPN停留的最多时长，对于每个支持在线开户的移动管理网元，其本地配置信息中的该初始值相同。
应理解，第二移动管理网元可以根据第一信息启动第二去注册定时器，上述启动第二去注册定时器，可以理解为第二移动管理网元根据第一移动管理网元上的第一去注册定时器的时间信息启动第二去注册定时器并执行第一移动管理网元上的第一去注册定时器的剩余时间，也可以理解为第二移动管理网元根据在线开户指示信息启动第二去注册定时器。
结合第一方面，在第一方面的某些实现方式中，该方法还包括：第二移动管理网元根据在线开户指示信息启动第二去注册定时器。
本申请实施例的去注册的方法，通过第二移动管理网元从第一移动管理网元处获取第一移动管理网元上的第一去注册定时器的时间信息或者在线开户指示信息，使得在发生移动管理网元重定向后，第二移动管理网元仍然能够启动去注册定时器，去注册定时器到期后，触发去注册流程，在ON-SNPN上注销终端设备的注册信息，并触发PDU会话释放，从而防止终端设备无限驻留在ON-SNPN。
结合第一方面，在第一方面的某些实现方式中，该方法还包括：第二移动管理网元接收第一移动管理网元发送的第一消息之前，向第一移动管理网元发送第二消息，上述第二消息携带第二移动管理网元在线开户能力信息，上述第二移动管理网元在线开户能力信息用于指示第二移动管理网元是否支持在线开户。
应理解，上述第一消息具体可以为获取UE上下文响应消息，或者为建立UE上下文请求消息，或者为N2消息通知确认消息，本申请实施例对此不作限定。上述第二消息具体可以为请求获取UE上下文消息，或者为建立UE上下文响应消息，本申请实施例对此不作限定。
结合第一方面，在第一方面的某些实现方式中，该方法还包括：当所述第一信息为所述第一移动管理网元上的第一去注册定时器的时间信息时，第二移动管理网元向所述第一移动管理网元发送所述第二消息之前，接收接入网网元发送的N2消息，该N2消息携带所述在线开户指示信息和注册请求，其中在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备，注册请求用于指示终端设备请 求在第二移动管理网元上进行注册。
结合第一方面，在第一方面的某些实现方式中，该方法还包括：第二移动管理网元在根据所述第一信息启动第二去注册定时器之后，向终端设备发送注册响应消息，所述注册响应消息用于指示终端设备在第二移动管理网元上注册成功。
本申请实施例的去注册的方法，通过第二移动管理网元向第一移动管理网元发送第二移动管理网元在线开户能力信息，使得第一移动管理网元能够确定第二移动管理网元支持在线开户，从而向第二移动管理网元发送第一移动管理网元上的第一去注册定时器的时间信息或者在线开户指示信息。在发生移动管理网元重定向后，第二移动管理网元能够启动去注册定时器，去注册定时器到期后，触发去注册流程，在ON-SNPN上注销终端设备的注册信息，并触发PDU会话释放，从而防止终端设备无限驻留在ON-SNPN。
结合第一方面，在第一方面的某些实现方式中，该方法还包括：向网络存储网元发送第一请求消息，所述第一请求消息用于请求在网络存储网元中注册移动管理网元的标识信息和在线开户能力信息，或者所述第一请求消息用于请求在网络存储网元中更新移动管理网元的标识信息和在线开户能力信息；接收网络存储网元发送的第一响应消息，所述第一响应消息用于指示所述网络存储网元已经接受所述第一请求消息。
可选地，上述第一请求消息可以为NF注册请求消息或NF更新请求消息，上述第一响应消息可以为NF注册响应消息或NF更新响应消息。
可选地，上述移动管理网元标识信息可以为完全限定域名(Fully Qualified Domain Name，FQDN)、全局唯一标识符(Globally Unique AMF Identifier，GUAMI)和IP地址等，本申请实施例对此不作限定。
应理解，当网络存储网元中没有第二移动管理网元在线开户能力信息时，通过上述NF注册请求消息请求在网络存储网元的NF配置文件信息中增加该第二移动管理网元在线开户能力信息；当网络存储网元中已有第二移动管理网元在线开户能力信息，但是第二移动管理网元对在线开户的支持情况发生变化时，通过上述NF更新请求消息请求在网络存储网元的NF配置文件信息中更新第二移动管理网元在线开户能力信息。
本申请实施例的去注册的方法，通过第二移动管理网元在网络存储网元中保存或更新第二移动管理网元在线开户能力信息，使得第一移动管理网元能够通过查询网络存储网元发现并选择支持在线开户的第二移动管理网元，从而向第二移动管理网元发送第一移动管理网元上的去注册定时器的时间信息或者在线开户指示信息。在发生移动管理网元重定向后，使去注册定时器仍然能在第二移动管理网元上执行，去注册定时器到期后，触发去注册流程，在ON-SNPN上注销终端设备的注册信息，并触发PDU会话释放，从而防止终端设备无限驻留在ON-SNPN。
应理解，上述第一移动管理网元可以为Old AMF网元，也可以为S-AMF网元，上述第二移动管理网元可以为New AMF网元，也可以为T-AMF网元，上述网络存储网元可以为NRF网元，上述接入网网元可以为RAN网元。在5G网络以及未来其它的网络中，上述各个网元也可以是其他的名称，本申请实施例对此不作具体限定。例如，在6G网络中，上述各个网元中的部分或全部可以沿用5G中的术语，也可能采用其他名称，本申请实施例对此不作限定。
第二方面，提供了一种去注册的方法，该方法可以由网络设备执行，或者，也可以由 用于网络设备的芯片或电路执行，本申请对此不作限定，为了便于描述，下面以由第一移动管理网元执行为例进行说明。
该方法可以包括：第一移动管理网元确定第二移动管理网元支持在线开户；第一移动管理网元向第二移动管理网元发送第一消息，所述第一消息携带第一信息，所述第一信息为在线开户(onboarding)指示信息或者所述第一移动管理网元上的第一去注册定时器的时间信息。
具体地，在线开户指示信息用于指示终端设备正在进行在线开户注册，或者，用于指示终端设备为在线开户注册的终端设备；第一移动管理网元上的第一去注册定时器的时间信息用于指示第一移动管理网元上的第一去注册定时器已过去的时间或者剩余的时间。
可选地，第一消息具体可以为获取UE上下文响应消息，或者为建立UE上下文请求消息，或者为N2消息通知确认消息，本申请实施例对此不作限定。
本申请实施例的去注册的方法，通过第一移动管理网元向支持在线开户的第二移动管理网元发送第一移动管理网元上的第一去注册定时器的时间信息或者在线开户指示信息，使得在发生移动管理网元重定向后，第二移动管理网元仍然能够启动去注册定时器，去注册定时器到期后，触发去注册流程，在ON-SNPN上注销终端设备的注册信息，并触发PDU会话释放，从而防止终端设备无限驻留在ON-SNPN。
结合第二方面，在第二方面的某些实现方式中，该方法还包括：根据第一移动管理网元是否已经启动第一去注册定时器，确定第一移动管理网元向第二移动管理网元发送的第一消息中携带的第一信息的具体内容。
结合第二方面，在第二方面的某些实现方式中，该方法还包括：第一移动管理网元已经启动第一去注册定时器，则第一移动管理网元向第二移动管理网元发送的第一消息中携带的第一信息为第一移动管理网元上的第一去注册定时器的时间信息，该第一移动管理网元上的第一去注册定时器的时间信息用于指示所述第一移动管理网元上的第一去注册定时器已过去的时间，或者用于指示所述第一移动管理网元上的第一去注册定时器剩余的时间。
结合第二方面，在第二方面的某些实现方式中，该方法还包括：第一移动管理网元还未启动第一去注册定时器，则第一移动管理网元向第二移动管理网元发送的第一消息中携带的第一信息为在线开户指示信息，所述在线开户指示信息用于指示终端设备正在进行在线开户注册，或者，用于指示终端设备为在线开户注册的终端设备。
结合第二方面，在第二方面的某些实现方式中，该方法还包括：第一移动管理网元接收第二移动管理网元发送的第二消息，所述第二消息携带第二移动管理网元在线开户能力信息，上述第二移动管理网元在线开户能力信息用于指示所述移动管理网元是否支持在线开户；第一移动管理网元根据上述第二移动管理网元在线开户能力信息确定第二移动管理网元支持在线开户。
结合第二方面，在第二方面的某些实现方式中，该方法还包括：第一移动管理网元查询本地配置信息，并且根据本地配置信息中的第二移动管理网元在线开户能力信息确定第二移动管理网元支持在线开户
结合第二方面，在第二方面的某些实现方式中，该方法还包括：第一移动管理网元获取在线开户指示信息，所述在线开户指示信息用于指示终端设备正在进行在线开户注 册，或者，用于指示终端设备为在线开户注册的终端设备，第一移动管理网元根据上述在线开户指示信息选择支持在线开户的所述第二移动管理网元。
结合第二方面，在第二方面的某些实现方式中，该方法还包括：第一移动管理网元根据接收到的在线开户指示信息和本地配置信息选择支持在线开户的第二移动管理网元。
结合第二方面，在第二方面的某些实现方式中，该方法还包括：第一移动管理网元获取在线开户指示信息后，第一移动管理网元向网络存储网元发送第二请求消息，该第二请求消息携带在线开户指示信息，上述第二请求消息用于请求在所述网络存储网元查找支持在线开户的移动管理网元的实例信息，其中，在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备；第一移动管理网元接收上述网络存储网元发送的第二响应消息，该第二响应消息携带所述网络存储网元查找到的支持在线开户的移动管理网元的实例信息，该支持在线开户的移动管理网元的实例信息包括所述第二移动管理网元的实例信息；第一移动管理网元从上述支持在线开户的移动管理网元的实例信息中选择第二移动管理网元。
具体地，上述第二请求消息可以为NF发现请求消息，第二响应消息可以为NF发现响应消息，或者第二请求消息和第二响应消息也可以为其他消息，本申请实施例对此不作限定。
结合第二方面，在第二方面的某些实现方式中，该方法还包括：第一移动管理网元通过获取UE上下文获取上述在线开户指示信息。
结合第二方面，在第二方面的某些实现方式中，该方法还包括：第一移动管理网元从UE上下文中获取所述在线开户指示信息之前，根据从N2或N14消息中获取的在线开户指示信息，或根据“SNPN在线开户(SNPNonboarding)”注册类型，在UE上下文中保存在线开户指示信息。
应理解，第一移动管理网元接收N2消息，或从“SNPN在线开户(SNPNonboarding)”注册类型信息获取到在线开户指示信息时，可能未发生移动管理网元重定向，因此需要先将该在线开户指示信息保存在上下文中，当发生移动管理网元重定向时，再从UE上下文中获取该在线开户指示信息；或者，在已经发生了AMF重定向的情况下，接收到了N14消息，但是为了后续使用N14消息中的在线开户指示信息，而将在线开户指示信息先保存在UE上下文中。
需要说明的是，当终端设备在ON-SNPN上完成在线开户注册后发生了移动，导致原始的移动管理网元无法继续为终端设备服务，此时需要重新选择移动管理网元，即需要移动管理网元重定向。可选地，移动管理网元重定向过程可能发生在终端设备移动性注册过程中，即此时终端设备处于空闲态，则选择第二移动网元的过程将由接入网网元执行，此时，第一移动管理网元需要确定第二移动管理网元支持在线开户，才能向其传递上述第一信息；或者，移动管理网元重定向过程可能发生在切换流程中，即此时终端设备处于连接态，则选择第二移动网元的过程将由第一移动管理网元执行，此时，第一移动管理网元在选择第二移动管理网元时就可以直接选择出支持在线开户的第二移动管理网元，然后向其传递上述第一信息，即，此时不再需要额外的确定第二移动管理网元是否支持在线开户的步骤。
本申请实施例的去注册的方法，通过第一移动管理网元向支持在线开户的第二移动管理网元发送第一移动管理网元上的第一去注册定时器的时间信息或者在线开户指示信息，使得在发生移动管理网元重定向后，第二移动管理网元能够获取第一移动管理网元上的第一去注册定时器的时间信息或者在线开户指示信息并启动去注册定时器，去注册定时器到期后，触发去注册流程，在ON-SNPN上注销终端设备的注册信息，并触发PDU会话释放，从而防止终端设备无限驻留在ON-SNPN。
第三方面，提供了一种去注册的方法，该方法可以包括：网络存储网元接收第二移动管理网元发送的第一请求消息，上述第一请求消息用于请求在网络存储网元中注册移动管理网元的标识信息和在线开户能力信息，或者所述第一请求消息用于请求在网络存储网元中更新移动管理网元的标识信息和在线开户能力信息；网络存储网元根据第一请求消息在NF配置文件中保存移动管理网元标识信息和第二移动管理网元在线开户能力信息；网络存储网元向第二移动管理网元发送第一响应消息，上述第一响应消息用于指示所述网络存储网元已经接受所述第一请求消息。
可选地，上述第一请求消息可以为NF注册请求消息或NF更新请求消息，上述第一响应消息可以为NF注册响应消息或NF更新响应消息。
可选地，上述移动管理网元标识信息可以为完全限定域名(Fully Qualified Domain Name，FQDN)、全局唯一标识符(Globally Unique AMF Identifier，GUAMI)和IP地址等，本申请实施例对此不作限定。
应理解，当网络存储网元中没有第二移动管理网元在线开户能力信息时，通过上述NF注册请求消息请求在网络存储网元的NF配置文件信息中增加该第二移动管理网元在线开户能力信息；当网络存储网元中已有第二移动管理网元在线开户能力信息，但是第二移动管理网元对在线开户的支持情况发生变化时，通过上述NF更新请求消息请求在网络存储网元的NF配置文件信息中更新第二移动管理网元在线开户能力信息。
结合第三方面，在第三方面的某些实现方式中，该方法还包括：网络存储网元接收第一移动管理网元的发送第二请求消息，该第二请求消息携带在线开户指示信息，上述第二请求消息用于请求在所述网络存储网元查找支持在线开户的移动管理网元的实例信息，其中，在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备；网络存储网元根据NF配置文件查询支持在线开户的移动管理网元的实例信息，该支持在线开户的移动管理网元的实例信息包括所述第二移动管理网元的实例信息；网络存储网元向第一移动管理网元发送的第二响应消息，该第二响应消息携带网络存储网元查找到的支持在线开户的移动管理网元的实例信息。
具体地，上述第二请求消息可以为NF发现请求消息，第二响应消息可以为NF发现响应消息，或者第二请求消息和第二响应消息也可以为其他消息，本申请实施例对此不作限定。
本申请实施例的去注册的方法，通过第二移动管理网元在网络存储网元中保存或更新第二移动管理网元在线开户能力信息，使得第一移动管理网元能够通过查询网络存储网元发现并选择支持在线开户的第二移动管理网元，从而向第二移动管理网元发送第一移动管理网元上的第一去注册定时器的时间信息或者在线开户指示信息。在发生移动管理网元重定向后，第二移动管理网元能够启动去注册定时器，去注册定时器到期后，触发去注册流 程，在ON-SNPN上注销终端设备的注册信息，并触发PDU会话释放，从而防止终端设备无限驻留在ON-SNPN。
第四方面，提供了一种去注册的方法，该方法可以包括：接入网网元接收终端发送的第三消息，该第三消息携带在线开户指示信息和注册请求，上述在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备；根据所述在线开户指示信息选择第二移动管理网元；向第二移动管理网元发送N2消息，所述N2消息携带所述在线开户指示信息和所述注册请求。
可选地，上述第三消息可以为接入网(Access Network，AN)消息或无线资源控制(Radio Resource Control，RRC)消息，本申请对此不作限定。
具体地，接入网网元通过向第二移动管理网元发送携带在线开户指示信息的N2消息，使第二移动管理网元获知终端设备正在进行在线开户注册，或者终端设备是已经在线开户注册的设备，从而向第一移动管理网元传递第二移动管理网元在线开户能力信息。
第五方面，提供一种通信装置，该装置用于执行上述第一方面至第四方面的任一可能的实现方式中的方法。具体地，该装置可以包括用于执行第一方面至第四方面提供的方法的单元和/或模块，如处理单元和/或收发单元。
在一种实现方式中，该装置为网络设备。当该装置为网络设备时，所述收发单元可以是收发器，或，输入/输出接口；所述处理单元可以是处理器。
在另一种实现方式中，该装置为用于网络设备中的芯片、芯片系统或电路。当该装置为用于通信设备中的芯片、芯片系统或电路时，所述收发单元可以是该芯片、芯片系统或电路上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等；所述处理单元可以是处理器、处理电路或逻辑电路等。
可选地，上述收发器可以为收发电路。可选地，上述输入/输出接口可以为输入/输出电路。
第六方面，提供一种通信装置，该装置包括：存储器，用于存储程序；处理器，用于执行存储器存储的程序，当存储器存储的程序被执行时，处理器用于执行上述第一方面至第四方面的任一可能的实现方式中的方法。
在一种实现方式中，该装置为终端设备或网络设备。
在另一种实现方式中，该装置为用于终端设备或网络设备中的芯片、芯片系统或电路。
第七方面，本申请提供一种处理器，用于执行上述第一方面至第四方面的任一可能的实现方式中的方法。在执行这些方法的过程中，上述方法中有关发送上述信息和获取/接收上述信息的过程，可以理解为由处理器输出上述信息的过程，以及处理器接收输入的上述信息的过程。在输出上述信息时，处理器将该上述信息输出给收发器，以便由收发器进行发射。该上述信息在由处理器输出之后，还可能需要进行其他的处理，然后才到达收发器。类似地，处理器接收输入的上述信息时，收发器获取/接收该上述信息，并将其输入处理器。更进一步地，在收发器收到该上述信息之后，该上述信息可能需要进行其他的处理，然后才输入处理器。
基于上述原理，举例来说，前述方法中提及的在线开户指示信息和第一移动管理网元上的第一去注册定时器的时间信息，可以理解为处理器接收输入的信息。
对于处理器所涉及的发射、发送和获取/接收等操作，如果没有特殊说明，或者，如 果未与其在相关描述中的实际作用或者内在逻辑相抵触，则均可以更加一般性的理解为处理器输出和接收、输入等操作，而不是直接由射频电路和天线所进行的发射、发送和接收操作。
在实现过程中，上述处理器可以是专门用于执行这些方法的处理器，也可以是执行存储器中的计算机指令来执行这些方法的处理器，例如通用处理器。上述存储器可以为非瞬时性(non-transitory)存储器，例如只读存储器(Read Only Memory，ROM)，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本申请实施例对存储器的类型以及存储器与处理器的设置方式不做限定。
第八方面，提供一种计算机可读存储介质，该计算机可读介质存储用于设备执行的程序代码，该程序代码包括用于执行上述第一方面至第四方面的任一可能的实现方式中的方法。
第九方面，提供一种包含指令的计算机程序产品，当该计算机程序产品在计算机上运行时，使得计算机执行上述第一方面至第四方面的任一可能的实现方式中的方法。
第十方面，提供一种芯片，所述芯片包括处理器与通信接口，所述处理器通过所述通信接口读取存储器上存储的指令，执行上述第一方面至第四方面的任一可能的实现方式中的方法。
可选地，作为一种实现方式，所述芯片还可以包括存储器，所述存储器中存储有指令，所述处理器用于执行所述存储器上存储的指令，当所述指令被执行时，所述处理器用于执行上述第一方面至第四方面的任一可能的实现方式中的方法。
第十一方面，提供一种通信系统，所述系统包括移动管理网元，所述移动管理网元可用于执行上述第一和第二方面及第一和第二方面的任一方法中由移动性管理网元执行的步骤。
在一些可能的实现方式中，所述系统还可以包括接入网网元，所述接入网网元可用于执行上述第三方面及第三方面的任一方法中由接入网网元执行的步骤。
在一些可能的实现方式中，所述系统还可以包括网络存储网元，所述网络存储网元可用于执行上述第四方面及第四方面的任一方法中由网络存储网元执行的步骤。
在一些可能的实现方式中，所述系统还可以包括本申请实施例提供的方案中与该移动管理网元、接入网网元和网络存储网元中的一项或多项进行交互的其他设备，包括上文所述的网络设备，如第一移动管理网元和第二移动管理网元(如AMF)；又如，接入网网元和网络存储网元(如RAN和NRF)。
附图说明
图1是应用于本申请实施例的一种系统架构的示意图。
图2是简化的5G移动通信系统架构示意图。
图3是5G移动通信系统架构示意图。
图4是应用于本申请实施例的一种非公共网络示意图。
图5是应用于本申请实施例提供的方法的在线开户系统架构的示意图。
图6是本申请实施例提供的一种去注册的方法的示意性流程图。
图7是本申请实施例提供的一种去注册的方法的示意性流程图。
图8是本申请实施例提供的一种去注册的方法的示意性流程图。
图9是本申请实施例提供的另一种去注册的方法的示意性流程图。
图10是本申请实施例提供的另一种去注册的方法的切换准备阶段的示意性流程图。
图11是本申请实施例提供的另一种去注册的方法的切换执行阶段的示意性流程图。
图12是本申请实施例提供的再一种去注册的方法的示意性流程图。
图13是本申请实施例提供的再一种去注册的方法的示意性流程图。
图14是本申请实施例提供的再一种去注册的方法的示意性流程图。
图15是本申请实施例提供的通信装置的示意性框图。
图16是本申请实施例提供的另一通信装置的示意性框图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
图1是应用于本申请实施例的系统架构100。如图1所示，下面对该系统架构中涉及的各个部分分别进行说明。
需要说明的是，本申请下述实施例中各个网元之间的消息名字或消息中各参数的名字等只是一个示例，具体实现中也可以是其他的名字，本申请实施例对此不作具体限定。
1、移动管理网元110和120：主要用于移动性管理和接入管理等，可以用于实现移动性管理实体(mobility management entity，MME)功能中除会话管理之外的其它功能，例如，合法监听以及接入授权/鉴权等功能。
在5G通信系统中，该移动管理网元可以是移动管理功能(access and mobility management function，AMF)网元。在未来通信系统中，移动管理网元仍可以是AMF网元，或者，还可以有其它的名称，本申请不做限定。
2、(无线)接入网络(radio access network，(R)AN)网元130和140：用于为特定区域的授权终端设备提供入网功能，并能够根据终端设备的级别，业务的需求等使用不同质量的传输隧道。
(R)AN网元能够管理无线资源，为终端设备提供接入服务，进而完成控制信号和终端设备数据在终端设备和核心网之间的转发，(R)AN网元也可以理解为传统网络中的基站。
3、终端设备150：可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备，以及各种形式的终端，移动台(mobile station，MS)，终端(terminal)，用户设备(user equipment，UE)，软终端等等。例如，水表、电表、传感器等。
上述系统架构100可以用于执行本申请实施例中提供的一种去注册的方法。
具体地，移动管理网元110具体用于：接收移动管理网元120发送的第二消息；确定移动管理网元120是否支持在线开户(onboarding)注册；向移动管理网元120发送第一消息。
具体地，移动管理网元110根据移动管理网元120的在线开户能力信息确定移动管理网元120是否支持在线开户注册。进一步地，移动管理网元110可以通过查询本地配置信息获取移动管理网元120的在线开户能力信息；或者，移动管理网元110可以通过第二消息获取移动管理网元120的在线开户能力信息，即第二消息携带移动管理网元120的在线 开户能力信息。可选地，第二消息具体可以为获取UE上文下请求消息，或者为创建UE上下文响应消息，本申请对此不作限定。
可选地，移动管理网元110还可以用于：选择支持在线开户注册的移动管理网元120。
在一些可能的实施方式中，移动管理网元110从UE上下文中获取在线开户指示信息，根据在线开户指示信息选择支持在线开户的移动管理网元120。进一步地，移动管理网元110可以根据在线开户指示信息通过查询本地配置信息选择支持在线开户的移动管理网元120；或者，移动管理网元110可以根据在线开户指示信息通过查询网络存储网元发现并选择支持在线开户的移动管理网元120。
可选地，移动管理网元110向支持在线开户的移动管理网元120发送第一消息，上述第一消息携带第一信息，该第一信息用于指示移动管理网元120启动去注册定时器，该第一信息具体可以为移动管理网元110上的第一去注册定时器的时间信息或在线开户指示信息。
可选地，如果移动管理网元110还未启动第一去注册定时器，则移动管理网元110向移动管理网元120发送的第一消息中可以携带在线开户指示信息，该在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备。
可选地，如果移动管理网元110已经启动第一去注册定时器，则移动管理网元110向移动管理网元120发送的第一消息中可以携带移动管理网元110上的第一去注册定时器的时间信息，该移动管理网元110上的第一去注册定时器的时间信息用于指示移动管理网元110上的第一去注册定时器已过去的时间或者剩余的时间。
进一步地，第一消息具体可以为向移动管理网元120发送的获取UE上下文响应消息；或者，第一消息为建立UE上下文请求消息；或者，第一消息为N2消息通知确认消息；或者，第一消息也可以为其他消息，本申请对此不作限定。
应理解，当终端设备在ON-SNPN上完成初始在线开户注册后发生了移动，导致原始的移动管理网元无法继续为终端设备服务，此时需要重新选择移动管理网元，即需要移动管理网元重定向。可选地，移动管理网元重定向过程可能发生在终端设备移动性注册过程中，即此时终端设备处于空闲态；或者，移动管理网元重定向过程可能发生在切换流程中，即此时终端设备处于连接态。
需要说明的是，当终端设备发生位置移动，且导致移动管理网元重定向时，有可能移动到不支持在线开户的区域，此时会出现无法选择出支持在线开户的移动管理网元120的情况。此时，为了保证通话的连续，或者移动性注册过程的正常进行，只能选择不支持在线开户移动管理网元。此时，移动管理网元110根据移动管理网元120的在线开户能力信息确定移动管理网元120不支持在线开户注册后，向移动管理网元120发送的第一消息中可以不携带第一信息，则继续执行现有的移动性注册流程或切换流程；或者，移动管理网元110根据移动管理网元120的在线开户能力信息确定移动管理网元120不支持在线开户注册后，仍然向移动管理网元120发送携带第一信息的第一消息，此时，第一消息中的第一信息不再指示移动管理网元120启动第二去注册定时器。可选地，在上述两种情况下，可以在下一次移动管理网元重定向时，选择支持在线开户的移动管理网元，并向该支持在线开户的移动管理网元传递第一信息。
相应地，移动管理网元120用于：接收移动管理网元110发送的第一消息；根据获取 的第一消息和自身是否支持在线开户，执行第一操作；向移动管理网元110发送第二消息。
可选地，第一操作具体为根据在线开户指示信息启动第二去注册定时器；或者，第一操作为将在线开户指示信息保存在UE上下文中；或者，第一操作为根据移动管理网元110上的去注册定时器的时间信息启动第二去注册定时器并继续执行第一去注册定时器的剩余时间；或者，第一操作为忽略移动管理网元110上的第一去注册定时器的时间信息。
具体地，如果移动管理网元120支持在线开户，则根据接收到的第一消息中携带的在线开户指示信息启动第二去注册定时器；或者，如果移动管理网元120支持在线开户，则根据接收到的第一消息中携带的移动管理网元110上的第一去注册定时器的时间信息启动第二去注册定时器并继续执行第一去注册定时器剩余的时间；或者，如果移动管理网元120不支持在线开户，则将接收到的第一消息中携带的在线开户指示信息保存在UE上下文中，并在下一次移动管理网元重新配置(relocation)时，将上述在线开户指示信息通过UE上下文传递给新的移动管理网元；或者，如果移动管理网元120不支持在线开户，则将接收到的第一消息中携带的移动管理网元110上的去注册定时器的时间信息忽略或删除。相应地，接入网网元130用于：接收终端150发送的第三消息，上述第三消息可以携带在线开户指示信息，可选地，上述无线资源控制消息还可以携带注册请求消息，具体地，第三消息可以为无线资源控制消息或接入网消息，也可以为其他消息，本申请实施例对此不作限定；选择移动管理网元120；向移动管理网元120发送N2消息，上述N2消息可以携带在线开户指示信息，可选地，上述N2消息还可以携带注册请求。
可选地，接入网网元130还可以用于：接收移动管理网元120发送的切换请求消息；向移动管理网元120发送切换请求响应消息；向移动管理网元120发送切换通知消息。
可选地，接入网网元140用于：向移动管理网元110发送切换准备消息，上述切换准备消息用于通知移动管理网元110进行切换；接收移动管理网元110发送的切换命令消息；向终端150发送切换命令消息。
相应地，终端150用于：向接入网网元130发送上述第三消息，上述第三消息可以携带在线开户指示信息，可选地，上述第三消息还可以携带注册请求消息；接收移动管理网元120发送的注册响应消息。
可选地，终端150还可以用于：接收接入网网元140发送的切换命令消息。
可选地，终端150还可以用于：向接入网网元130发送切换确认消息。
需要说明的是，上述终端150可以是连接态的终端，也可以是空闲态的终端，并且移动管理网元110和移动管理网元120可以通过N14接口进行通信，本申请实施例对此不作限定。
图2示出了5G移动通信系统架构图。如图所示，5G移动通信系统架构(无线)接入网(radio accessnetwork，(R)AN)，核心网(Core)和数据网络(data network，DN)构成。其中，UE，AN，Core是构成架构的主要成分，逻辑上它们可以分为用户面和控制面两部分，控制面负责移动网络的管理，用户面负责业务数据的传输。图中，NG2参考点位于AN控制面和Core控制面之间，NG3参考点位于AN用户面和Core用户面之间，NG6参考点位于Core用户面和数据网络之间。
UE：是移动用户与网络交互的入口，能够提供基本的计算能力，存储能力，向用户显示业务窗口，接受用户操作输入。UE会采用新空口技术，与AN建立信号连接，数据 连接，从而传输控制信号和业务数据到移动网络。
AN：类似于传统网络里面的基站，部署在靠近UE的位置，为特定区域的授权用户提供入网功能，并能够根据用户的级别，业务的需求等使用不同质量的传输隧道来传输用户数据。AN能够管理自身的资源，合理利用，按需为UE提供接入服务，在UE和核心网之间转发控制信号和用户数据。
Core：负责维护移动网络的签约数据，管理移动网络的网元，为UE提供会话管理，移动性管理，策略管理，安全认证等功能。在UE附着的时候，为UE提供入网认证；在UE有业务请求的时候，为UE分配网络资源；在UE移动的时候，为UE更新网络资源；在UE空闲的时候，为UE提供快恢复机制；在UE去附着的时候，为UE释放网络资源；在UE有业务数据的时候，为UE提供数据路由功能，如转发上行数据到DN；或者从DN接收UE下行数据，转发到AN，从而发送给UE。
DN：是为用户提供业务服务的数据网络，一般客户端位于UE，服务端位于数据网络。数据网络可以是私有网络，如局域网，也可以是不受运营商管控的外部网络，如Internet，还可以是运营商共同部署的专有网络，如为了配置IP多媒体网络子系统(IP multimedia core network subsystem，IMS)服务。
图3是在图2基础上确定的详细架构，其中核心网控制面采用服务化架构，控制面网元之间的交互采用服务调用的方式，在这种架构下，控制面网元会向其他控制面网元开放服务，供其他控制面网元调用。下面对该图3所示的网络架构中涉及的各个部分分别进行说明：
1、用户设备(user equipment，终端)310：可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备，以及各种形式的终端、移动台(mobile station，MS)、终端(terminal)或软终端等等。例如，水表、电表、传感器等。
示例性地，本申请实施例中的用户设备可以指接入终端、用户单元、用户站、移动站、移动台、中继站、远方站、远程终端、移动设备、用户终端(user terminal)、终端(terminal equipment)、无线通信设备、用户代理或用户装置。用户设备还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络中的用户设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的用户设备或者未来车联网中的用户设备等，本申请实施例对此并不限定。
作为示例而非限定，在本申请实施例中，可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
此外，在本申请实施例中，用户设备还可以是物联网(internet of Things，IoT)系统 中的用户设备，IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。在本申请实施例中，IOT技术可以通过例如窄带(narrow band，NB)技术，做到海量连接，深度覆盖，终端省电。此外，在本申请实施例中，用户设备还可以包括智能打印机、火车探测器、加油站等传感器，主要功能包括收集数据(部分用户设备)、接收接入网设备的控制信息与下行数据，并发送电磁波，向接入网设备传输上行数据。
2、(无线)接入网设备(radio access network，(R)AN)320：用于为特定区域的授权用户设备提供入网功能，并能够根据用户设备的级别，业务的需求等使用不同质量的传输隧道。
(R)AN能够管理无线资源，为用户设备提供接入服务，进而完成控制信号和用户设备数据在用户设备和核心网之间的转发，(R)AN也可以理解为传统网络中的基站。
示例性地，本申请实施例中的接入网设备可以是用于与用户设备通信的任意一种具有无线收发功能的通信设备。该接入网设备包括但不限于：演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(home evolved NodeB，HeNB，或home Node B，HNB)、基带单元(baseBand unit，BBU)，无线保真(wireless fidelity，WIFI)系统中的接入点(access point，AP)、无线中继节点、无线回传节点、传输点(transmission point，TP)或者发送接收点(transmission and reception point，TRP)等，还可以为5G，如，NR，系统中的gNB，或，传输点(TRP或TP)，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(distributed unit，DU)等。
在一些部署中，gNB可以包括集中式单元(centralized unit，CU)和DU。gNB还可以包括有源天线单元(active antenna unit，AAU)。CU实现gNB的部分功能，DU实现gNB的部分功能。比如，CU负责处理非实时协议和服务，实现无线资源控制(radio resource control，RRC)，分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能。DU负责处理物理层协议和实时服务，实现无线链路控制(radio link control，RLC)层、媒体接入控制(media access control，MAC)层和物理(physical，PHY)层的功能。AAU实现部分物理层处理功能、射频处理及有源天线的相关功能。由于RRC层的信息最终会变成PHY层的信息，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，如RRC层信令，也可以认为是由DU发送的，或者，由DU+AAU发送的。可以理解的是，接入网设备可以为包括CU节点、DU节点、AAU节点中一项或多项的设备。此外，可以将CU划分为接入网(radio access network，RAN)中的接入网设备，也可以将CU划分为核心网(core network，CN)中的接入网设备，本申请对此不做限定。
3、用户面网元330：用于分组路由和转发以及用户面数据的服务质量(quality of service，QoS)处理等。
在5G通信系统中，该用户面网元可以是用户面功能(user plane function，UPF)网元。在未来通信系统中，用户面网元仍可以是UPF网元，或者，还可以有其它的名称，本申请不做限定。
4、数据网络网元340：用于提供传输数据的网络。
在5G通信系统中，该数据网络网元可以是数据网络(data network，DN)网元。在未来通信系统中，数据网络网元仍可以是DN网元，或者，还可以有其它的名称，本申请不做限定。
5、会话管理网元350：主要用于会话管理、终端的网络互连协议(internet protocol，IP)地址分配和管理、选择可管理用户平面功能、策略控制和收费功能接口的终结点以及下行数据通知等。
在5G通信系统中，该会话管理功能网元可以是会话管理功能(session management function，SMF)网元。在未来通信系统中，会话管理功能网元仍可以是SMF网元，或者，还可以有其它的名称，本申请不做限定。
6、接入管理网元360：主要用于移动性管理和接入管理等，可以用于实现移动性管理实体(mobility management entity，MME)功能中除会话管理之外的其它功能，例如，合法监听以及接入授权/鉴权等功能。
在5G通信系统中，该接入管理网元可以是接入与移动管理功能(access and mobility management function，AMF)网元。在未来通信系统中，接入管理网元仍可以是AMF网元，或者，还可以有其它的名称，本申请不做限定。
7、认证服务器370：用于鉴权服务、产生密钥实现对终端的双向鉴权，支持统一的鉴权框架。
在5G通信系统中，该认证服务器可以是认证服务器功能(authentication server function，AUSF)网元。在未来通信系统中，认证服务器功能网元仍可以是AUSF网元，或者，还可以有其它的名称，本申请不做限定。
8、网络切片选择网元380：用于查找会话所关联的策略控制功能(policy control function，PCF)网元。
在5G通信系统中，该网络切片选择网元可以是网络切片选择功能(network slice selection function，NSSF)网元。在未来通信系统中，网络切片选择网元仍可以是NSSF网元，或者，还可以有其它的名称，本申请不做限定。
9、网络开放网元390：以北向API接口的方式向第三方开放网络功能。
在5G通信系统中，该网络开放网元可以是网络开放功能(network exposure function，NEF)网元。在未来通信系统中，网络开放网元仍可以是NEF网元，或者，还可以有其它的名称，本申请不做限定。
10、网络存储网元3100：用于维护网络中所有网络功能服务的实时信息。
在5G通信系统中，该网络存储网元可以是网络注册功能(network repository function，NRF)网元。在未来通信系统中，网络存储网元仍可以是NRF网元，或者，还可以有其它的名称，本申请不做限定。
可以理解的是，上述网元或者功能既可以是硬件设备中的网络元件，也可以是在专用硬件上运行软件功能，或者是平台(例如，云平台)上实例化的虚拟化功能。
当然，图1所涉及的网络架构中还可能包括其他网元，如统一数据存储库(unified data repository，UDR)或网络存储功能(network repository function，NRF)等网元或设备等，不作具体限定。
11、策略控制网元3110：用于指导网络行为的统一策略框架，为控制面功能网元(例如AMF，SMF等)提供策略规则信息等。
在4G通信系统中，该策略控制网元可以是策略和计费规则功能(policy and charging rules function，PCRF)网元。在5G通信系统中，该策略控制网元可以是策略控制功能(policy control function，PCF)网元。在未来通信系统中，策略控制网元仍可以是PCF网元，或者，还可以有其它的名称，本申请不做限定。
12、数据管理网元3120：用于处理终端标识，接入鉴权，注册以及移动性管理等。
在5G通信系统中，该数据管理网元可以是统一数据管理(unified data management，UDM)网元。在未来通信系统中，统一数据管理仍可以是UDM网元，或者，还可以有其它的名称，本申请不做限定。
13、应用网元3130：用于进行应用影响的数据路由，接入网络开放功能网元，与策略框架交互进行策略控制等。
在5G通信系统中，该应用网元可以是应用功能(application function，AF)网元。在未来通信系统中，应用网元仍可以是AF网元，或者，还可以有其它的名称，本申请不做限定。
在图3所示架构中，N1接口为UE与AMF之间的参考点；N2接口为(R)AN和AMF的参考点，用于NAS消息的发送等；N3接口为(R)AN和UPF之间的参考点，用于传输用户面的数据等；N4接口为SMF和UPF之间的参考点，用于传输例如N3连接的隧道标识信息，数据缓存指示信息，以及下行数据通知消息等信息；N6接口为UPF和DN之间的参考点，用于传输用户面的数据等。
图4示出了应用于本申请实施例的一种非公共网络示意图。图4所示的非公共网络(Non-public network，NPN)是一种非公用的5G网络，可以根据其是否依赖PLMN的网络功能分为公网集成NPN(public network integrated NPN，PNI-NPN)和独立部署NPN(standalone NPN，SNPN)。下面依次介绍PNI-NPN和SNPN。
图4中的(a)为PNI-NPN，可以使用PLMN中的网络切片实现，为了阻止非授权UE接入和选择PNI-NPN，可以额外使用封闭接入组(closed access group，CAG)功能。CAG识别一组用户，这些用户允许接入与CAG关联的小区(CAG小区)。为了防止不允许接入CAG小区的终端设备自动选择和接入CAG小区，CAG小区广播一个或者多个CAG ID，在终端设备上配置可用的CAG列表和指示(指示终端设备是否只允许通过CAG小区接入5GS)，UDM上UE签约数据包括可用的CAG列表和指示，即，通过广播CAG ID和配置终端设备可用的CAG ID限制终端设备的接入。
图4中的(b)为SNPN，不依赖PLMN网络，SNPN使用PLMN ID+网络标识符(Network identifier，NID)来标识，其中PLMN ID可以为第三方运营商预留的固有值，也可以是部署此SNPN的PLMN运营商的特定值。在SNPN中，其小区广播PLMN ID+NID，终端设备根据广播信息和配置的选网信息选择接入的NPN。如果终端设备发现配置的选网信息(PLMN ID+NID1)与网络广播的PLMN ID或者PLMN ID+NID2不相同，终端设备不会选择其接入，即，通过广播PLMN ID和NID让终端设备正确选择小区和网络。
为便于理解本申请实施例，首先对本申请中涉及到的术语做简单说明。
1、在线开户(onboarding)：终端设备接入网络建立临时的受限连接，以通过该临时 受限的连接从配置服务器(Provisioning Server，PVS)获取新签约数据或更新的签约数据来配置终端设备。
2、SNPN在线开户(SNPN onboarding)注册：为了达到在线开户的目的，基于默认的UE凭证，终端设备选择并通过SNPN在线开户注册过程注册到在线开户SNPN网络(onboarding SNPN，ON-SNPN)，与ON-SNPN建立安全连接，从而接入ON-SNPN，在此之后，终端设备可以在ON-SNPN建立受限的PDU会话，通过该受限的PDU会话，把用于初次鉴权的凭证和其他信息配置到终端设备，以使终端设备接入签约拥有者SNPN网络(subscription owner SNPN，SO-SNPN)的过程。
应理解，上述能支持终端设备通过SNPN在线开户注册过程与SNPN建立安全连接，从而允许终端设备访问ONN的SNPN，称为在线开户独立部署非公共网络(Onboarding standalone non-public network，ON-SNPN)。
3、初始注册：终端设备第一次在网络中注册的过程。在本申请实施例中，是指终端设备第一次在支持在线开户的SNPN区域进行在线开户注册的过程，即SNPN在线开户注册。
4、移动性注册：在本申请实施例中，终端设备在ON-SNPN上完成初始注册后，该终端设备的位置在ON-SNPN内发生了移动，需要在ON-SNPN更新终端设备的位置信息，以进行后续的移动性管理，此过程称为移动性注册。在该过程中，如果原始的移动管理网元无法继续为终端设备继续服务，会触发移动管理网元的重定向。
应理解，上述移动性注册在终端设备处于空闲态时发生。
5、切换流程：当终端设备的位置发生移动时，为了能为终端设备提供连续的无中断的通信服务，有效防止由于小区的信号质量变差造成的掉话，或者指示终端设备可与比当前服务小区信道质量更好的小区通信而启动的流程。
需要注意的是，上述切换流程在终端设备处于连接态时发生。
6、去注册定时器：当通过SNPN在线开户注册接入ON-SNPN的终端设备完成SO-SNPN凭证的用户面远程设置时，就应该从ON-SNPN发起注销。去注册定时器就是一种用于触发终端设备从ON-SNPN上注销的特定的计时器。根据ON-SNPN策略，当终端设备在ON-SNPN上进行在线开户注册时，移动管理网元就可以启动去注册定时器，该去注册定时器到期将会触发去注册流程，从ON-SNPN注销通过SNPN在线开户注册的终端设备。
可选地，可以在移动管理网元的本地配置中设定一个去注册定时器的初始值，该初始值为去注册定时器的总执行时长，此初始值也代表ON-SNPN允许每个在线开户注册的终端设备能够在ON-SNPN停留的最多时长，对于每个支持在线开户的移动管理网元，其本地配置信息中的该初始值相同。
应理解，在5G通信系统中，上述移动管理网元可以是接入与移动管理功能(access and mobility management function，AMF)网元。在未来通信系统中，移动管理网元仍可以是AMF网元，或者，还可以有其它的名称，本申请实施例对此不作限定。
图5是基于图4所示的NPN的在线开户的系统架构示意图，是对5G移动通信系统架构的扩展，其中核心网控制面采用点对点架构，即，控制面网元之间通过通信接口发送特定的消息，该消息只能由接口两端的控制面网元在通信时使用。具体地，AMF通过N11 接口与SMF通信，AMF通过N12接口与AUSF通信，AMF通过N22接口与NSSF通信，AMF通过N15接口与PCF通信。AUSF通过接口与默认凭证服务器(default credential sever，DCS)连接，其中DCS用于在线开户过程中基于默认UE凭证对终端设备进行认证鉴权。在这种架构下，终端设备使用DSC的凭证在ON-SNPN中进行SNPN在线开户注册，成功后，终端设备在ON-SNPN获取初始接入，并且AMF会启动去注册定时器，在定时器到期后，触发终端设备从ON-SNPN注销，即，去注册，从而防止终端设备无限驻留在ON-SNPN。
可选地，终端设备完成SNPN在线开户注册后，可发起PDU会话建立请求，获取网络的PDU会话连接服务。终端设备可以通过PDU会话与PVS建立连接，从而终端设备从PVS获取签约所有者SNPN(Subscription owner SNPN，SO-SNPN)的新签约数据。
应理解，ON-SNPN可以在部分区域支持在线开户，在这些区域的小区中，RAN广播onboarding enabled指示，指示该小区是否支持在线开户。当终端设备位于支持在线开户的ON-SNPN的小区时，可以根据广播消息中的onboarding enabled指示，选择在ON-SNPN进行在线开户注册。终端设备成功进行在线开户注册后，后续可以移动到ON-SNPN的其他服务区域，例如移动到不支持在线开户的小区，这不影响终端设备通过PDU会话从PVS获取新签约。
需要说明的是，图2、图3和图5中的各个网元之间的接口名称只是一个示例，具体实现中接口的名称可能为其他的名称，本申请实施例对此不作具体限定。图1至图5中包括的各个网元(比如SMF、AF、UPF等)的名称也仅是一个示例，对网元本身的功能不构成限定。在5G网络以及未来其它的网络中，上述各个网元也可以是其他的名称，本申请实施例对此不作具体限定。例如，在6G网络中，上述各个网元中的部分或全部可以沿用5G中的术语，也可能采用其他名称，等等，在此进行统一说明，以下不再赘述。此外，应理解，上述各个网元之间所传输的消息(或信令)的名称也仅仅是一个示例，对消息本身的功能不构成任何限定。
图6示出了本申请实施例提供的一种去注册方法的示意性流程图。该方法可以应用于图1至图3的系统架构，也可以应用于图5所示的系统架构，本申请实施例不限于此。图6示出了去注册的方法的步骤或操作，但这些步骤或操作仅是示例，本申请实施例还可以执行其他操作或者图6中的各个操作的变形。此外，图6中的各个步骤可以按照与图6呈现的不同的顺序来执行，并且有可能并非要执行图6中的全部操作。
S601，选择第二移动管理网元。
应理解，在这种情况下，终端设备的位置发生了移动，导致初始移动管理网元即第一移动管理网元无法为上述终端设备服务，则需要选择新的移动管理网元即第二移动管理网元为上述终端设备服务。
具体地，上述选择第二移动管理网元可以由接入网网元执行。接入网网元根据终端发送的RRC信令携带的在线开户指示信息选择第二移动管理网元，在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备。
可选地，上述选择第二移动管理网元的步骤由第一移动管理网元执行。第一移动管理网元获取在线开户指示信息，获知终端设备正在进行在线开户注册，或者已经在线开户注册，则第一移动管理网元在本地配置信息中查询并选择支持在线开户的第二移动管理网元， 或者第一移动管理网元通过查询网络存储网元发现并选择支持在线开户的第二移动管理网元。如果第一移动管理网元根据本地配置信息选择第二移动管理网元，则在本步骤之前，需要在本地配置中预先设定各移动管理网元的在线开户能力信息，上述在线开户能力信息用于指示移动管理网元是否支持在线开户；如果第一移动管理网元根据网络存储网元的NF配置文件信息选择支持在线开户的第二移动管理网元，则在本步骤之前，需要在网络存储网元的NF配置文件中配置各移动管理网元的在线开户能力信息。
可选地，第一移动管理网元可以通过UE上下文获取上述在线开户指示信息。具体地，第一移动管理网元从UE上下文中获取所述在线开户指示信息之前，根据从N2或N14消息中获取的在线开户指示信息，或根据“SNPN在线开户(SNPNonboarding)”注册类型，在UE上下文中保存在线开户指示信息。
应理解，第一移动管理网元接收N2消息，或从“SNPN在线开户(SNPNonboarding)”注册类型信息获取到在线开户指示信息时，可能未发生移动管理网元重定向，因此需要先将该在线开户指示信息保存在UE上下文中，当发生移动管理网元重定向时，再从UE上下文中获取该在线开户指示信息；或者，在已经发生了AMF重定向的情况下，接收到了N14消息，但是为了后续使用N14消息中的在线开户指示信息，而将在线开户指示信息先保存在UE上下文中。
S602，确定第二移动管理网元是否支持在线开户注册。
具体地，第一移动管理网元确定第二移动管理网元是否支持在线开户。
需要说明的是，如果S601由接入网网元执行，则第一移动网元无法获知第二移动管理网元对在线开户的支持情况，则在S602需要进一步确定第二移动管理网元是否支持在线开户注册；如果S601由第一移动管理网元执行，则第一移动管理网元在选择第二移动管理网元时，即可获知第二移动管理网元是否支持在线开户。
一示例，第一移动管理网元接收第二移动管理网元发送的第二消息，该第二消息携带第二移动管理网元在线开户能力信息，第一移动管理网元根据上述第二移动管理网元在线开户能力信息确定第二移动管理网元是否支持在线开户。
可选地，上述第二消息具体可以为请求获取UE上下文消息，或者为建立UE上下文响应消息，本申请实施例对此不作限定。
又一示例，第一移动管理网元查询本地配置信息，并且根据本地配置信息中的第二移动管理网元在线开户能力信息确定第二移动管理网元是否支持在线开户。
可选地，S602具体可以分为S602a和S602b。
S602a，第二移动管理网元支持在线开户，则继续执行S603。
S602b，第二移动管理网元不支持在线开户，则继续执行S604”。
S603，确定第一移动管理网元是否已经启动第一去注册定时器。
具体地，第一移动管理网元确定自己是否已经启动第一去注册定时器，如果已经启动了第一去注册定时器，则继续执行S604；如果未启动第一去注册定时器，则继续执行S604’。
S604，第一移动管理网元向第二移动管理网元传递第一移动管理网元上的第一去注册定时器的时间信息。
具体地，第一移动管理网元上的第一去注册定时器的时间信息可以为第一移动管理网元上的第一去注册定时器已过去的时间，或者可以为第一移动管理网元上的第一去注册定 时器剩余的时间。
S604’，第一移动管理网元向第二移动管理网元传递在线开户指示信息。
具体地，上述在线开户指示信息用于指示终端设备正在进行在线开户注册或指示终端设备为在线开户注册的终端设备。
S604”，第一移动管理网元向第二移动管理网元传递在线开户指示信息。
具体地，如果第一移动管理网元确定第二移动管理网元不支持在线开户，则无论第一移动管理网元是否已经启动第一去注册定时器，都在S604”向第二移动管理网元传递在线开户指示信息，以便第二移动管理网元在UE上下文中保存该在线开户指示信息，并传递给支持在线开户的移动管理网元。
S605，第二移动管理网元启动第二去注册定时器并继续执行去注册定时器的剩余时间。
具体地，第二移动管理网元根据第一移动管理网元上的第一去注册定时器的时间信息，启动第二去注册定时器并继续执行第一去注册定时器剩余的时间。可选地，第一移动管理网元上的第一去注册定时器的时间信息可以为第一移动管理网元上的第一去注册定时器已过去的时间，或第一移动管理网元上的第一去注册定时器剩余的时间。如果上述第一移动管理网元上的第一去注册定时器的时间信息为第一移动管理网元上的第一去注册定时器已过去的时间，则第二移动管理网元根据本地配置信息中去注册定时器的初始值和去注册定时器已过去的时间计算剩余的时间。具体地，在每个移动管理网元的本地配置中均设定一个去注册定时器的初始值，该初始值为去注册定时器的总执行时长，此初始值也代表ON-SNPN允许每个在线开户注册的终端设备能够在ON-SNPN停留的最多时长，对于每个支持在线开户的移动管理网元，其本地配置信息中的该初始值相同。
S605’，第二移动管理网元启动第二去注册定时器。
具体地，第二移动管理网元根据接收到的在线开户指示信息根据本地配置信息启动第二去注册定时器，该本地配置信息包括去注册定时器的初始值，此初始值代表ON-SNPN允许每个在线开户注册的终端设备能够在ON-SNPN停留的最多时长，对于每个支持在线开户的移动管理网元，其本地配置信息中的该初始值相同。
S605”，第二移动管理网元将在线开户指示信息保存在UE上下文中。
具体地，由于第二移动管理网元不支持在线开户，所以在接收到在线开户指示信息后，无法根据该在线开户指示信息启动第二去注册定时器。此时，第二移动管理网元将在线开户指示信息保存在UE上下文中，也即N14消息并获取到在线开户指示信息时，发生了移动管理网元重定向，需要先将该在线开户指示信息保存在UE上下文中。第二移动管理网元在移动管理网元重新配置(relocation)发起后，通过UE上下文将上述在线开户指示信息发送给新的支持在线开户的移动管理网元，以便新的移动管理网元启动去注册定时器。
需要说明的是，在某些情况下，S601中无法选择到支持在线开户的第二移动管理网元，则在S602中确定第二移动管理网元不支持在线开户，此时无论第一移动管理网元是否已经启动第一去注册定时器，第一移动管理网元均不向第二移动管理网元传递第一移动管理网元上的第一去注册定时器的时间信息或者在线开户指示信息，并继续执行现有的注册流程；或者，S601中无法选择到支持在线开户的第二移动管理网元，则在S602中第一移动管理网元确定第二移动管理网元不支持在线开户，且在S603中第一移动管理网元已经启动第一去注册定时器，此时第一移动管理网元也可以向第二移动管理网元传递第一移 动管理网元上的第一去注册定时器的时间信息，当第二移动管理网元接收到上述第一移动管理网元上的第一去注册定时器的时间信息时，忽略或删除该信息，并继续执行注册过程。可选地，在下一次移动管理网元重定向或relocation时，向重新选择的支持在线开户的移动管理网元传递在线开户指示信息。
本申请实施例的去注册方法，通过选择支持在线开户的第二移动管理网元，并将第一移动管理网元的第一移动管理网元上的第一去注册定时器的时间信息或在线开户指示信息传递给第二移动管理网元，使得第二移动管理网元在移动管理网元重定向后能够启动去注册定时器，去注册定时器到期后，触发去注册流程，在ON-SNPN上注销终端设备的注册信息，并触发PDU会话释放，从而防止终端设备无限驻留在ON-SNPN。
图7示出了本申请实施例提供的去注册方法的示意性流程图。该方法可以应用于图1至图3的系统架构，也可以应用于图5所示的系统架构，本申请实施例不限于此。图7所示方法可以包括如下步骤。
S701，第一移动管理网元确定第二移动管理网元是否支持在线开户。
一示例，第一移动管理网元接收第二移动管理网元发送的第二消息，该第二消息携带第二移动管理网元在线开户能力信息，第一移动管理网元根据上述第二移动管理网元在线开户能力信息确定第二移动管理网元是否支持在线开户。
可选地，上述第二消息具体可以为请求获取UE上下文消息，或者为建立UE上下文响应消息，本申请实施例对此不作限定。
又一示例，第一移动管理网元查询本地配置信息，并且根据本地配置信息中的第二移动管理网元在线开户能力信息确定第二移动管理网元是否支持在线开户。
又一示例，第一移动管理网元获取在线开户指示信息，并根据在线开户指示信息查询本地配置信息选择支持在线开户的第二移动管理网元。
又一示例，第一移动管理网元获取在线开户指示信息，并根据在线开户指示信息通过查询网络存储网元发现并选择支持在线开户的第二移动管理网元。
需要注意的是，如果通过本地配置信息确定第二移动管理网元是否支持在线开户，或选择支持在线开户的第二移动管理网元，则需要预先在本地配置信息中配置上述第二移动管理网元在线开户能力信息；如果通过查询NRF NF配置文件信息发现并选择支持在线开户的第二移动管理网元，则需要预先在网络存储网元中配置上述第二移动管理网元在线开户能力信息。
S702，第一移动管理网元根据第二移动管理网元对在线开户的支持情况向所述第二移动管理网元发送第一消息，所述第一消息携带第一信息，所述第一信息为在线开户指示信息或者所述第一移动管理网元上的第一去注册定时器的时间信息。
具体地，上述在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备；上述第一移动管理网元上的第一去注册定时器的时间信息用于指示第一移动管理网元上的第一去注册定时器已过去的时间或者剩余的时间。
可选地，第一移动管理网元确定第二移动管理网元支持在线开户，则第一移动管理网元根据自身是否已经启动第一去注册定时器向所述第二移动管理网元发送的第一消息中携带的第一信息的类型；具体地，如果第一移动管理网元未启动第一去注册定时器，则在向第二移动管理网元发送的第一消息中携带在线开户指示信息；或者，如果第一移动管理 网元已经启动了第一去注册定时器，则在向第二移动管理网元发送的第一消息中携带第一移动管理网元上的第一去注册定时器的时间信息。
应理解，该第一消息具体可以为获取UE上下文响应消息，或者为建立UE上下文请求消息，或者为N2消息通知确认消息，本申请实施例对此不作限定。
可选地，在S701中，第一移动管理网元确定第二移动管理网元不支持在线开户，则在S702中，第一移动管理网元仍然在向第二移动管理网元发送的第一消息中携带在线开户指示信息或者第一移动管理网元上的第一去注册定时器的时间信息。第二移动管理网元将接收到的在线开户指示信息保存在UE上下文中，并在下一次移动管理网元重定向或重新配置时，向支持在线开户的移动管理网元传递该在线开户指示信息；或者第二移动管理网元忽略或删除该消息，并在下一次移动管理网元重定向或重新配置时，通过其他方式向支持在线开户的移动管理网元发送去注册定时器的时间信息。
本申请实施例的去注册方法，通过向支持在线开户的第二移动管理网元发送第一移动管理网元上的第一去注册定时器的时间信息或在线开户指示信息，能够保证在移动管理网元重定向后，新的移动管理网元上仍能启动去注册定时器，去注册定时器到期后，触发去注册流程，在ON-SNPN上注销终端设备的注册信息，并触发PDU会话释放，从而防止终端设备无限驻留在ON-SNPN。
图8示出了本申请实施例提供的去注册方法的示意性流程图。该方法可以应用于图1至图3的系统架构，也可以应用于图5所示的系统架构，本申请实施例不限于此。图8所示方法可以包括如下步骤。
S801，第二移动管理网元接收第一移动管理网元发送的第一消息，上述第一消息携带第一信息。
具体地，第一信息可以为第一移动管理网元上的第一去注册定时器的时间信息，上述第一移动管理网元上的第一去注册定时器的时间信息用于指示第一移动管理网元上的第一去注册定时器已过去的时间或者剩余的时间；或者，第一信息可以为在线开户指示信息，上述在线开户指示信息用于指示终端设备正在进行在线开户注册或指示终端设备为在线开户注册的终端设备。
可选地，第一移动管理网元上的第一去注册定时器的时间信息具体可以为第一移动管理网元上的第一去注册定时器已经过去的时间或者剩余的时间。
S802，第二移动管理网元根据第一信息启动第二去注册定时器。
具体地，第二移动管理网元根据第一信息结合自身的在线开户能力信息启动第二去注册定时器。
应理解，上述启动第二去注册定时器，可以理解为第二移动管理网元根据在线开户指示信息启动第二去注册定时器，也可以理解为第二移动管理网元根据第一移动管理网元上的第一去注册定时器的时间信息启动第二去注册定时器并执行第一去注册定时器的剩余时间。
一示例，如果第二移动管理网元支持在线开户，且接收到的第一消息携带的第一信息为在线开户指示信息，则第二移动管理网元根据在线开户指示信息启动去注册定时器。又一示例，如果第二移动管理网元支持在线开户，且接收到的第一消息携带的第一信息为第一移动管理网元上的第一去注册定时器的时间信息，则根据第一移动管理网元上的第一去 注册定时器的时间信息启动第二去注册定时器并继续执行第一去注册定时器剩余的时间。当第一移动管理网元上的第一去注册定时器的时间信息用于指示第一移动管理网元上的第一去注册定时器已过去的时间时，则第二移动管理网元根据本地配置信息中去注册定时器的初始值和第一去注册定时器已过去的时间计算剩余的时间。具体地，在每个移动管理网元的本地配置中均设定一个去注册定时器的初始值，该初始值为去注册定时器的总执行时长，此初始值也代表ON-SNPN允许每个在线开户注册的终端设备能够在ON-SNPN停留的最多时长，对于每个支持在线开户的移动管理网元，其本地配置信息中的该初始值相同。
需要说明的是，在某些情况下，如果第二移动管理网元不支持在线开户，且接收到的第一消息携带的第一信息为在线开户指示信息，则第二移动管理网元将接收到的在线开户指示信息保存在UE上下文中，且向终端设备发送注册响应消息，上述注册响应消息用于指示注册成功，并在下一次移动管理网元重新配置(relocation)时，将所述在线开户指示信息通过所述UE上下文传递给新的移动管理网元；或者，如果第二移动管理网元不支持在线开户，且接收到的第一消息携带的第一信息为第一移动管理网元上的第一去注册定时器的时间信息，则第二移动管理网元忽略或删除接收到的第一移动管理网元上的第一去注册定时器的时间信息，并在下一次移动管理网元重定向或重新配置时，通过其他方式将第一信息传递给支持在线开户的移动管理网元。
需要说明的是，图6至图8所示的去注册方法，可以应用于切换流程中，此时终端设备处于连接态；也可以应用于移动性注册过程中，此时终端设备处于空闲态。本申请实施例对此不作具体限定。在一种可能的实现方式中，图6至图8中所述第一移动管理网元可以为Old AMF网元，也可以为S-AMF网元，所述第二移动管理网元可以为New AMF网元，也可以为T-AMF网元，所述接入网网元可以为RAN，本申请实施例对此不作限定。在5G网络以及未来其它的网络中，上述各个网元也可以是其他的名称，本申请实施例对此不作具体限定。例如，在6G网络中，上述各个网元中的部分或全部可以沿用5G中的术语，也可能采用其他名称，本申请实施例对此不作限定。
以上结合图6至图8介绍了本申请实施例提供的去注册方法的整体流程，以下结合图9至图11，详细说明图6至图8所示的去注册方法在具体应用场景下的流程。
图9示出了本申请实施例提供的另一种去注册方法的示意性流程图。该方法可以应用于图1至图3的系统架构，也可以应用于图5所示的系统架构，本申请实施例不限于此。
S901，终端设备UE向RAN发送RRC信令，RRC信令中携带在线开户指示信息，该在线开户指示信息用于指示终端设备正在进行在线开户注册或指示终端设备为在线开户注册的终端设备，可选地，RRC信令中还可以携带注册请求消息。
具体地，上述注册请求消息可以包括注册类型(Mobility Registration)信息，用于指示正在进行的注册的类型；可选地，注册请求消息还可以包括5G-全球唯一临时UE标识(5G Globally Unique Temporary UE Identity，5G-GUTI)；或者，签约隐藏标识符(Subscription Concealed Identifier，SUCI)；或者永久设备标识(Permanent Equipment Identifier，PEI)。
S902，RAN根据RRC信令中的onboarding指示选择New AMF。
S903，RAN向New AMF发送N2消息，N2消息中携带S901中的在线开户指示信 息和注册请求消息。
S904，New AMF向Old AMF发送获取UE上下文请求消息，以请求获取UE上下文，所述获取上下文请求消息中携带S903中的注册请求消息。
具体地，在New AMF向Old AMF发送所述获取UE上下文请求消息之前，New AMF根据所述注册请求信息中的5G-GUTI确定OldAMF。可选地，如果New AMF在注册请求信息中接收到NID，则使用5G-GUTI和NID确定Old AMF。
可选地，所述获取UE上下文请求消息中可以携带New AMF的在线开户能力信息，该在线开户能力信息用于指示New AMF是否支持在线开户。
S905，Old AMF确定New AMF是否支持在线开户。
具体地，如果在S904中，New AMF向Old AMF发送的获取UE上下文请求消息中携带了New AMF的在线开户能力信息，则Old AMF根据该在线开户能力信息确定New AMF是否支持在线开户。
可选地，Old AMF还可以通过查询本地配置信息确定New AMF是否支持在线开户。此时，需要在Old AMF的本地配置信息中预先配置New AMF的在线开户能力信息。
一示例，Old AMF确定New AMF支持在线开户，则继续执行S906。
又一示例，Old AMF确定New AMF不支持在线开户，则继续执行现有的注册过程，上述现有注册过程是指消息传输过程中不携带任何与去注册定时器有关的信息。
又一示例，Old AMF确定New AMF不支持在线开户，则仍然执行S906。
S906，Old AMF向New AMF发送获取UE上下文响应消息，所述获取UE上下文响应消息携带第一移动管理网元上的第一去注册定时器的时间信息或在线开户指示信息。
具体地，Old AMF根据自身是否已经启动第一去注册定时器，确定向New AMF发送的获取UE上下文响应消息具体携带Old AMF上的第一去注册定时器的时间信息，或者在线开户指示信息。可选地，所述Old AMF上的第一去注册定时器的时间信息可以包括Old AMF上的第一去注册定时器已过去的时间；或者，Old AMF上的第一去注册定时器的时间信息可以包括Old AMF上的第一去注册定时器剩余的时间。可选地，可以在每个AMF的本地配置中均设定一个去注册定时器的初始值，该初始值为去注册定时器的总执行时长，此初始值也代表ON-SNPN允许每个在线开户注册的终端设备能够在ON-SNPN停留的最多时长，对于每个支持在线开户的移动管理网元，其本地配置信息中的该初始值相同。所述New AMF可以根据该初始值和Old AMF上的第一去注册定时器的时间信息中的第一去注册定时器已过去的时间计算剩余的时间。
具体地，S906可以为S906a或S906b。
S906a，如果Old AMF已经启动第一去注册定时器，则向New AMF发送的获取UE上下文响应消息携带Old AMF上的第一去注册定时器的时间信息。
S906b，如果Old AMF未启动第一去注册定时器，则向New AMF发送的获取UE上下文响应消息携带在线开户指示信息。
S907，New AMF根据自身是否支持在线开户和S906中获取UE上下文响应消息，执行后续步骤。
具体地，S907可以为S907a、S907b、S907c或S907d。
S907a，如果New AMF支持在线开户，且S906为S906a，则New AMF启动第二去 注册定时器并继续执行第一去注册定时器的剩余时间。
S907b，如果New AMF支持在线开户，且S906为S906b，则New AMF启动第二去注册定时器。可选地，New AMF根据Old AMF上的去注册定时器的时间信息和本地配置中去注册定时器的初始值启动第二去注册定时器并继续执行第一去注册定时器的剩余时间。
S907c，如果New AMF不支持在线开户，且S906为S906a，则New AMF忽略Old AMF上的第一去注册定时器的时间信息。
S907d，如果New AMF不支持在线开户，且S906为S906b，则New AMF将在线开户指示信息保存在UE上下文中。
可选地，在下一次AMF重定向或AMF重新配置时，New AMF将保存在UE上下文中的在线开户指示信息通过UE上下文传递给新的支持在线开户的AMF；或者，通过其他方式向新的支持在线开户的AMF传递第一信息。
S908，New AMF向终端设备UE发送注册响应消息。
具体地，注册响应消息可以为“注册接受(Registration Accept)”响应消息。
可选地，如果后续去注册定时器到期，则AMF触发去注册流程，将终端设备从SNPN注销，并触发终端设备PDU会话的释放。
本申请实施例的去注册方法，在移动性注册导致的AMF重定向的场景下，通过Old AMF将Old AMF上的第一去注册定时器的时间信息或在线开户指示信息传递给支持在线开户的New AMF，确保New AMF可以启动去注册定时器。在定时器到期后，AMF触发去注册流程，在ON-SNPN上注销终端设备的注册信息，并触发PDU会话释放，从而防止终端设备无限驻留在ON-SNPN。
图10和图11分别示出了本申请实施例提供的另一种去注册的方法的切换准备阶段和切换执行阶段的示意性流程图。该方法可以应用于图1至图3的系统架构，也可以应用于图5所示的系统架构，本申请实施例不限于此。
S1101，S-NG-RAN决定通过N2接口进行切换。
S1102，S-NG-RAN向S-AMF发送切换要求消息。
S1103，S-AMF选择T-AMF。
具体地，S-AMF需要先获取在线开户指示信息，所述在线开户指示信息用于指示终端设备UE正在进行在线开户注册。可选地，S-AMF可以通过获取UE上下文获取在线开户指示信息；或者，S-AMF可以通过接收S-NG-RAN发送的N2消息获取在线开户指示信息；或者，S-AMF可以通过“SNPNonboarding”注册类型信息获取在线开户指示信息，上述注册类型信息可以包含在S-NG-RAN发送给S-AMF的注册请求信息中；或者，S-AMF可以通过其他AMF发送的N14消息获取在线开户指示信息。
一示例，S-AMF可以根据在线开户指示信息结合本地配置信息选择T-AMF，需要说明的是，如果S-AMF通过本地配置信息选择T-AMF，则在本步骤之前，需要在本地配置中预先设定AMF是否支持在线开户的信息。
又一示例，S-AMF还可以根据在线开户指示信息结合NRF信息查询选择T-AMF，需要说明的是，如果S-AMF通过NRF信息选择T-AMF，则在本步骤之前，需要在NRF中配置AMF是否支持在线开户的信息。
S1104，S-AMF发送创建UE上下文请求消息给T-AMF。
具体地，S1104可以分为S1104a和S1104b。
S1104a，S-AMF在向T-AMF发送的创建UE上下文请求消息中可以携带S-AMF上的第一去注册定时器的时间信息或在线开户指示信息。具体地，S-AMF上的第一去注册定时器的时间信息可以包括S-AMF上的第一去注册定时器已过去的时间；或者，S-AMF上的第一去注册定时器的时间信息可以包括S-AMF上的第一去注册定时器剩余的时间。
可选地，S-AMF可以根据自身是否已经启动去注册定时器确定向T-AMF发送的创建UE上下文请求消息中携带的信息。具体地，如果S-AMF已经启动了第一去注册定时器，则向T-AMF发送的创建UE上下文请求消息中可以携带S-AMF上的第一去注册定时器的时间信息；或者，如果S-AMF未启动第一去注册定时器，则向T-AMF发送的创建UE上下文请求消息中可以携带在线开户指示信息。
可选地，T-AMF后续可以根据接收到的S-AMF上的第一去注册定时器的时间信息或在线开户指示信息启动第二去注册定时器；或者，启动第二去注册定时器并继续执行第一去注册定时器的剩余时间；或者，将在线开户指示信息保存在UE上下文中；或者，忽略S-AMF上的第一去注册定时器的时间信息。
可选地，可以在每个AMF的本地配置中均设定一个去注册定时器的初始值，该初始值为去注册定时器的总执行时长，此初始值也代表ON-SNPN允许每个在线开户注册的终端设备能够在ON-SNPN停留的最多时长，对于每个支持在线开户的移动管理网元，其本地配置信息中的该初始值相同。如果所述S-AMF上的第一去注册定时器的时间信息为S-AMF上的第一去注册定时器已过去的时间，则所述T-AMF根据上述初始值和第一去注册定时器上已过去的时间计算剩余的时间。
S1104b，S-AMF发送给T-AMF的创建UE上下文请求消息不携带去注册定时器相关信息。
可选地，S-AMF选择的T-AMF支持在线开户，但是在S1104b中S-AMF发送给T-AMF的创建UE上下文请求消息不携带去注册定时器相关信息。
S1105，T-AMF向SMF发送PDU会话上下文更新请求消息。
S1106，SMF选择UPF。
S1107，SMF发送N4会话更改请求消息给PSA-UPF，并从PSA-UPF接收N4会话更改响应消息；SMF发送N4会话建立请求消息给T-UPF，并从T-UPF接收N4会话建立响应消息。
S1108，SMF向T-AMF发送PDU会话上下文更新响应消息。
S1109，T-AMF监控PDU会话切换响应消息；
S1110，T-AMF向T-NG-RAN发送切换请求消息；
S1111，T-AMF接收T-NG-RAN发送的切换请求响应消息；
S1112，T-AMF向SMF发送PDU会话上下文更新请求消息；SMF发送N4会话更改请求消息给T-UPF，并从T-UPF接收N4会话更改响应消息；SMF发送N4会话更改请求消息给S-UPF，并从S-UPF接收N4会话更改响应消息；SMF向T-AMF发送PDU会话上下文更新响应消息；
S1113，T-AMF发送创建UE上下文响应消息给S-AMF。
在图11中，如果T-AMF支持在线开户，且在S1103中按照现有机制选择T-AMF，即不根据在线开户指示信息选择支持在线开户的T-AMF，那么S1104为S1104b，此时在S1113的创建UE上下文响应消息中可以携带T-AMF的在线开户能力信息，用以指示T-AMF是否支持在线开户，然后S-AMF可以根据T-AMF的在线开户能力信息在S1206中S-AMF向T-AMF发送的N2消息通知确认消息中可以携带S-AMF上的第一去注册定时器的时间信息或在线开户指示信息。
可选地，S-AMF可以根据自身是否已经启动第一去注册定时器确定向T-AMF发送的N2消息通知确认消息中携带的信息。具体地，如果S-AMF已经启动了第一去注册定时器，则向T-AMF发送的N2消息通知确认消息中携带S-AMF上的第一去注册定时器的时间信息；如果S-AMF未启动第一去注册定时器，则向T-AMF发送的N2消息通知确认消息中携带在线开户指示信息。
可选地，支持在线开户的T-AMF后续可以根据接收到的S-AMF上的第一去注册定时器的时间信息或在线开户指示信息启动第二去注册定时器，或启动第二去注册定时器并继续执行第一去注册定时器的剩余时间。
可选地，在每个AMF的本地配置中均设定一个去注册定时器的初始值，该初始值为去注册定时器的总执行时长，此初始值也代表ON-SNPN允许每个在线开户注册的终端设备能够在ON-SNPN停留的最多时长，对于每个支持在线开户的移动管理网元，其本地配置信息中的该初始值相同。如果所述S-AMF上的第一去注册定时器的时间信息为S-AMF上的去注册定时器已过去的时间，则所述T-AMF根据上述初始值和第一去注册定时器上已过去的时间计算剩余的时间。
一示例，如果S-AMF选择的T-AMF不支持在线开户，则在S1206向T-AMF发送的N2消息通知确认消息中仍然可以携带S-AMF上的第一去注册定时器的时间信息或在线开户指示信息。
可选地，如果不支持在线开户的T-AMF接收到的N2消息通知确认消息中携带S-AMF上的第一去注册定时器的时间信息，则T-AMF忽略该S-AMF上的第一去注册定时器的时间信息；如果不支持在线开户的T-AMF接收到的N2消息通知确认消息中携带在线开户指示信息，则T-AMF将在线开户指示保存在UE上下文中，以便在下次AMF重定向或AMF relocation时，将该UE上下文中的在线开户指示信息传送给后续的新的AMF。
需要说明的是，在某些情况下，S-AMF无法选择到支持在线开户的T-AMF，则执行现有的注册流程，即本申请实施例涉及的S1104a和S1206中均不传递去注册定时器相关信息。可选地，在下一次AMF重定向或AMF relocation时，通过其他方式向支持在线开户的AMF传递在线开户指示信息或S-AMF上的第一去注册定时器的时间信息。
图11中所示的其他步骤均为现有技术，为了简洁，在此不再赘述。
本申请实施例的去注册方法，通过选择支持在线开户的T-AMF，并将S-AMF的S-AMF上的第一去注册定时器的时间信息或在线开户指示信息传递给T-AMF，确保T-AMF上可以继续执行去注册定时器。在定时器到期后，AMF触发去注册流程，在ON-SNPN上注销终端设备的注册信息，并触发PDU会话释放，从而防止终端设备无限驻留在ON-SNPN。
下面将结合图12至图14，对图10中S1103涉及的在NRF中配置AMF是否支持在线开户的信息以及在NRF中查询支持在线开户的AMF实例信息的过程进行详细说明。
图12示出了本申请实施例提供的再一种去注册的方法中如何在NRF中配置AMF在线开户能力信息的示意性流程图，本申请实施例方法用于NRF的NF配置文件中没有AMF在线开户能力信息的情况下，在NF配置文件中增加AMF的在线开户能力信息。
S1501，AMF向NRF发送NF注册请求消息。
具体地，该NF注册请求消息中携带AMF的标识信息以及AMF的在线开户能力信息，所述AMF的在线开户能力信息用于指示AMF是否支持在线开户。
S1502，存储NF配置文件。
具体地，NRF将AMF的标识信息和AMF的在线开户能力信息存储在NF配置文件中。
S1503，NRF向AMF发送NF注册响应消息。
在本申请实施例中，通过NF注册请求消息在NRF NF配置文件中新增AMF在线开户能力信息，使S1103中的S-AMF通过查询NRF发现并选择支持在线开户的T-AMF，并在后续步骤中将S-AMF的S-AMF上的第一去注册定时器的时间信息或在线开户指示信息传递给T-AMF，确保去注册定时器在T-AMF上可以继续执行。在定时器到期后，AMF触发去注册流程，在ON-SNPN上注销终端设备的注册信息，并触发PDU会话释放，从而防止终端设备无限驻留在ON-SNPN。
图13示出了本申请实施例提供的再一种去注册的方法中如何在NRF中更新AMF在线开户能力信息的示意性流程图，本申请实施例方法用于NRF的NF配置文件中已有AMF在线开户能力信息，但是AMF是否支持在线开户的情况发生变化的情况下，在NRF的NF配置文件中更新AMF在线开户能力信息。
S1601，AMF向NRF发送NF更新请求消息。
具体地，该NF更新请求消息中可以携带AMF的标识信息以及AMF的在线开户能力信息，所述AMF的在线开户能力信息用于指示AMF是否支持在线开户。
S1602，更新NF配置文件。
具体地，NRF在NF配置文件中更新AMF的标识信息和AMF的在线开户能力信息。
S1603，NRF向AMF发送NF更新响应消息。
可选地，上述AMF的标识信息可以为完全限定域名(Fully Qualified Domain Name，FQDN)、全局唯一标识符(Globally Unique AMF Identifier，GUAMI)和IP地址等，本申请实施例对此不作限定。
在本申请实施例中，通过NF更新请求消息在NRF NF配置文件中更新AMF在线开户能力信息，使S1103中的S-AMF通过查询NRF发现并选择支持在线开户的T-AMF，并在后续步骤中将S-AMF的S-AMF上的第一去注册定时器的时间信息或在线开户指示信息传递给T-AMF，确保去注册定时器在T-AMF上可以继续执行。在定时器到期后，AMF触发去注册流程，在ON-SNPN上注销终端设备的注册信息，并触发PDU会话释放，从而防止终端设备无限驻留在ON-SNPN。
图14示出了本申请实施例提供的再一种去注册的方法中如何在NRF中查询支持在线开户的AMF实例信息的示意性流程图。
S1701，AMF向NRF发送NF发现请求消息。
具体地，该NF发现请求消息中可以携带AMF的NF类型信息以及在线开户指示信息， 上述在线开户指示信息用于指示终端设备正在进行在线开户注册或指示终端设备为在线开户注册的终端设备。
S1702，对NF发现请求进行鉴权。
具体地，NRF对NF发现请求进行鉴权，并查询支持在线开户的AMF实例。上述AMF实例包括：AMF文件，里面包含AMF的基本信息，比如IP地址、提供的服务等信息。S-AMF据此就可以找到T-AMF的IP地址。
S1703，NRF向AMF发送NF发现响应消息，该NF发现响应消息携带S1702中查询到的支持在线开户的AMF实例的信息。
在本申请实施例中，通过发现请求在NRF中查询支持在线开户的AMF实例信息，使S1103中的S-AMF选择支持在线开户的T-AMF，并在后续步骤中将S-AMF上的第一去注册定时器的时间信息或在线开户指示信息传递给T-AMF，确保去注册定时器在T-AMF上可以继续执行。在定时器到期后，AMF触发去注册流程，在ON-SNPN上注销终端设备的注册信息，并触发PDU会话释放，从而防止终端设备无限驻留在ON-SNPN。
本文中描述的各个实施例可以为独立的方案，也可以根据内在逻辑进行组合，这些方案都落入本申请的保护范围中。
应理解，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
上文中结合图1至图14详细说明了本申请实施例提供的方法。下面将结合图15至图16详细说明本申请实施例提供的通信装置。应理解，装置实施例的描述与方法实施例的描述相互对应，因此，未详细描述的内容可以参见上文方法实施例，为了简洁，这里不再赘述。
图15示出了本申请实施例提供的一种去注册装置的示意性框图。该装置2000包括收发单元2010和处理单元2020。收发单元2010可以实现相应的通信功能，处理单元2020用于进行数据处理。收发单元2010还可以称为通信接口或通信单元。
可选地，该装置2000还可以包括存储单元，该存储单元可以用于存储指令和/或数据，处理单元2020可以读取存储单元中的指令和/或数据，以使得装置实现前述方法实施例。
该装置2000可以用于执行上文方法实施例中网络设备所执行的动作，这时，该装置2000可以为网络设备或者可配置于网络设备的部件，收发单元2010用于执行上文方法实施例中网络设备的收发相关的操作，处理单元2020用于执行上文方法实施例中网络设备的处理相关的操作。
在一种可能的实施方式中，装置2000为第一移动管理网元，收发单元2010和处理单元2020能够支持上述方法示例中由第一移动管理网元完成的动作。例如：处理单元2020用于确定第二移动管理网元是否支持在线开户注册；收发单元2010用于向第二移动管理网元发送第一消息，上述第一消息携带第一信息，上述第一信息用于指示第二移动管理网元启动第二去注册定时器。
一示例，处理单元2020根据获取的第二移动管理网元在线开户能力信息确定第二移动管理网元是否支持在线开户。
可选地，收发单元2010接收第二移动管理网元发送的第二消息，所述第二消息携带第二移动管理网元在线开户能力信息，处理单元2020根据上述第二移动管理网元在线开 户能力信息确定第二移动管理网元支持在线开户。
应理解，上述第二消息具体可以为获取UE上文下请求消息，或者为创建UE上下文响应消息，本申请对此不作限定。
可选地，处理单元2020查询本地配置信息，并且根据本地配置信息中的第二移动管理网元在线开户能力信息确定第二移动管理网元支持在线开户。
又一示例，处理单元2020根据在线开户指示信息选择支持在线开户的第二移动管理网元。
可选地，处理单元2020可以通过UE上下文获取在线开户指示信息。
具体地，处理单元2020在从UE上下文获取在线开户指示信息之前，根据从N2或N14消息中获取的在线开户指示信息，或根据“SNPN在线开户(SNPNonboarding)”注册类型，在UE上下文中保存在线开户指示信息。
一示例，处理单元2020根据接收到的在线开户指示信息通过查询本地配置信息选择支持在线开户的第二移动管理网元。
又一示例，处理单元2020根据接收到的在线开户指示信息通过查询网络存储功能网元信息发现并选择支持在线开户的第二移动管理网元。
具体地，收发单元2010向网络存储网元发送第二请求消息，该第二请求消息用于指示网络存储网元查找支持在线开户的移动管理网元实例；收发单元2010接收网络存储网元发送的第二响应消息，所述第二响应消息携带所述网络存储网元发现的所述支持在线开户的移动管理网元的实例信息，处理单元2020根据移动管理网元的实例信息选择支持在线开户的第二移动管理网元。
又一示例，收发单元2010向第二移动管理网元发送的第一消息携带的第一信息具体可以为在线开户指示信息，上述在线开户指示信息用于指示终端设备正在进行在线开户注册或指示终端设备为在线开户注册的终端设备；或者，第一信息具体可以为第一移动管理网元上的第一去注册定时器的时间信息，上述第一移动管理网元上的第一去注册定时器的时间信息用于指示通信装置2000上的去注册定时器已过去的时间或者剩余的时间。
可选地，处理单元2020还用于根据通信装置2000是否执行了去注册定时器确定收发单元2010向第二移动管理网元发送第一消息中具体携带在线开户指示信息，还是第一移动管理网元上的第一去注册定时器的时间信息：如果通信装置2000未启动第一去注册定时器，则收发单元2010向第二移动管理网元传递的第一消息携带在线开户指示信息；或者，如果通信装置2000已经启动了去注册定时器，则收发单元2010向第二移动管理网元传递的第一消息携带第一移动管理网元上的第一去注册定时器的时间信息。
应理解，第一消息具体可以为获取UE上下文响应消息，或者为建立UE上下文请求消息，或者为N2消息通知确认消息，本申请实施例对此不作限定。
需要说明的是，当终端设备在ON-SNPN上完成在线开户注册后发生了移动，导致原始的移动管理网元无法继续为终端设备服务，此时需要重新选择移动管理网元，即需要移动管理网元重定向。可选地，移动管理网元重定向过程可能发生在终端设备移动性注册过程中，即此时终端设备处于空闲态，则选择第二移动网元的过程将由接入网网元执行，此时，处理单元2020需要确定第二移动管理网元是支持在线开户的，才能向其传递第一信息；或者，移动管理网元重定向过程可能发生在切换流程中，即此时终端设备处于连接态， 则选择第二移动网元的过程将由处理单元2020执行，此时，处理单元2020选择第二移动管理网元时就可以直接选择出支持在线开户的第二移动管理网元，然后向其传递第一信息，即，此时不再需要额外的确定第二移动管理网元是否支持在线开户的步骤。
还需要说明的是，终端设备可能移动到不支持在线开户的区域，即此时无法选择出支持在线开户的第二移动管理网元，则为了保证通信的连续，接入网网元或处理单元2020选择不支持在线开户的第二移动管理网元，并继续执行现有注册流程；或者收发单元2010仍然向第二移动管理网元发送第一移动管理网元上的第一去注册定时器的时间信息或在线开户指示信息，但是第二移动管理网元无法根据上述信息启动第二去注册定时器。在上述两种情况下，可以在终端设备移动到支持在线开户的区域时，选择支持在线开户的移动管理网元，并向该支持在线开户的移动管理网元传递第一信息。
在又一种可能的实施方式中，装置2000为第二移动管理网元，收发单元2010和处理单元2020能够支持上述方法示例中由第二移动管理网元完成的动作。例如：收发单元2010还用于接收来自第一移动管理网元的第一消息，上述第一消息可以携带第一信息，该第一信息具体可以为在线开户指示信息或第一移动管理网元上的第一去注册定时器的时间信息；处理单元2020用于确定通信装置2000是否支持在线开户，以及根据接收的第一消息和通信装置2000是否支持在线开户，执行后续操作。
应理解，第一消息具体可以为获取UE上下文响应消息，或者为建立UE上下文请求消息，或者为N2消息通知确认消息，本申请实施例对此不作限定。
一示例，处理单元2020确定通信装置2000支持在线开户，并且收发单元2010接收到的第一消息携带的第一信息为第一移动管理网元上的第一去注册定时器的时间信息，则处理单元2020根据第一移动管理网元上的第一去注册定时器的时间信息，启动第二去注册定时器并继续执行第一去注册定时器剩余的时间。
又一示例，处理单元2020确定通信装置2000支持在线开户，并且收发单元2010接收到的第一消息携带在线开户指示信息，则处理单元2020根据在线开户指示信息启动第二去注册定时器。
又一示例，处理单元2020确定通信装置2000不支持在线开户，并且收发单元2010接收到的第一消息携带的第一信息为第一移动管理网元上的第一去注册定时器的时间信息，则处理单元2020忽略第一移动管理网元上的第一去注册定时器的时间信息.。并在下一次移动管理网元重定向或重新配置时，向支持在线开户的移动管理网元传递第一信息。
又一示例，如果处理单元2020确定通信装置2000不支持在线开户，并且收发单元2010接收到的第一消息携带的第一信息为在线开户指示信息，处理单元2020将在线开户指示信息保留在UE上下文中。并在下一次移动管理网元重定向或重新配置时，通过UE上下文向支持在线开户的移动管理网元传递第一信息。
又一示例，收发单元2010，用于向第一移动管理网元发送第二消息，上述第二消息携带第二移动管理网元在线开户能力信息。
具体地，上述第二移动管理网元在线开户能力信息用于指示第二移动管理网元是否支持在线开户。第二消息可以为获取UE上下文请求消息，或者为创建UE上下文响应消息，也可以是其他携带第二移动管理网元在线开户能力信息的消息，本申请实施例在此不作限定。
又一示例，收发单元2010还可以用于向网络存储网元发送NF注册请求消息或NF更新请求消息，上述NF注册请求消息用于请求向上述网络存储网元注册上述第二移动管理网元的配置信息，上述NF更新请求消息用于请求向上述网络存储网元更新上述第二移动管理网元的配置信息，上述NF注册请求消息或NF更新请求消息携带第二移动管理网元标识信息和第二移动管理网元在线开户能力信息；收发单元2010还用于接收网络存储网元发送的NF注册响应消息或NF更新响应消息，上述NF注册响应消息或NF更新响应消息用于指示所述网络存储网元已经接受所述NF注册请求消息或上述NF更新请求消息。
又一示例，收发单元2010还可以用于向终端设备发送注册响应消息。
该装置2000可实现对应于根据本申请实施例的方法中的网络设备(如移动管理网元AMF)执行的步骤或者流程，该装置2000可以包括用于执行图1、图6至图11中的网络设备(如移动管理网元AMF)执行的方法的单元。并且，该装置2000中的各单元和上述其他操作和/或功能分别为了实现图1、图6至图11中的网络设备(如移动管理网元AMF)的方法实施例的相应流程。
应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
在又一种可能的实施方式，装置2000为网络存储网元，收发单元2010和处理单元2020能够支持上述方法示例中由网络存储网元完成的动作。例如：收发单元2010用于接收移动管理网元发送的第一请求消息；收发单元2010还用于向移动管理网元发送第一响应消息；处理单元2020用于根据第一请求消息保存或更新网络存储网元的NF配置文件。
一示例，第一请求消息具体为NF注册请求消息，其可以携带移动管理网元的标识信息以及在线开户能力信息，上述在线开户能力信息用于指示移动管理网元是否支持在线开户；处理单元2020具体用于将第一请求消息中的移动管理网元的标识信息以及在线开户能力信息添加至网络存储网元NF配置文件中。应理解，在该示例中，网络存储网元NF配置文件中原本没有上述移动管理网元在线开户的相关信息。
又一示例，第一请求消息具体为NF更新请求消息，其可以携带移动管理网元的标识信息以及在线开户能力信息，上述在线开户能力信息用于指示移动管理网元是否支持在线开户；处理单元2020具体用于将在网络存储网元NF配置文件中更新第以请求消息中的移动管理网元的标识信息以及在线开户能力信息。应理解，在该示例中，网络存储网元NF配置文件中原本已有上述移动管理网元在线开户的相关信息，但是上述移动管理网元对在线开户的支持情况发生了变化，则通过上述NF更新请求过程在网络存储网元NF配置文件中更新移动管理网元对在线开户支持情况的相关信息。
又一示例，收发单元2010还可以用于接收移动管理网元发送的第二请求消息，上述第二请求消息用于请求查找支持在线开户的移动管理网元的实例，其可以携带移动管理网元的NF类型信息以及在线开户指示信息，上述在线开户指示信息用于指示终端设备正在进行在线开户注册或指示终端设备为在线开户注册的终端设备；处理单元2020具体用于根据接收的第二请求消息查找/发现支持在线开户的移动管理网元的实例；收发单元2010还用于向移动管理网元发送第二响应消息，该第二响应消息中携带查询到的移动管理网元的实例信息。
具体地，上述第二请求消息可以为NF发现请求消息，第二响应消息可以为NF发现 响应消息，或者第二请求消息和第二响应消息也可以为其他消息，本申请实施例对此不作限定。
该装置2000可实现对应于根据本申请实施例的方法实施例中的网络设备(如网络存储网元NRF)执行的步骤或者流程，该装置2000可以包括用于执行图12、图13、图14中的网络设备(如网络存储网元NRF)执行的方法的单元。并且，该装置2000中的各单元和上述其他操作和/或功能分别为了实现图12、图13、图14中的网络设备的方法实施例的相应流程。
应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
应理解，这里的装置2000以功能单元的形式体现。这里的术语“单元”可以指应用特有集成电路(application specific integrated circuit，ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。
上述各个方案的装置2000具有实现上述方法中第一移动管理网元和第二移动管理网元执行的相应步骤的功能；所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块；例如收发单元可以由收发机替代，其它单元，如确定单元等可以由处理器替代，分别执行各个方法实施例中的收发操作以及相关的处理操作。
在本申请的实施例，图15中的装置也可以是芯片或者芯片系统，例如：片上系统(system on chip，SoC)。对应的，接收单元和发送单元可以是该芯片的收发电路，在此不做限定。
应理解，本申请实施例图15中的装置可以通过图16中的通信装置2200来实现，并且可以用于执行上述方法实施例中第一移动存储网元或第二移动管理网元对应的各个步骤和/或流程。
图16示出了本申请实施例提供的又一通信装置2200。该装置2200包括处理器2210、收发器2220和存储器2230。其中，处理器2210、收发器2220和存储器2230通过内部连接通路互相通信，该存储器2230用于存储指令，该处理器2210用于执行该存储器2230存储的指令，以控制该收发器2220发送信号和/或接收信号。
其中，若该通信装置2200为第一移动管理网元，上述处理器2210用于确定第二移动管理网元是否支持在线开户；收发器2220还用于向第二移动管理网元发送第一消息。所述第一消息可以携带在线开户指示信息，所述在线开户指示信息用于指示终端设备正在进行在线开户注册或指示终端设备为在线开户注册的终端设备；或者，所述第一消息也可以携带第一移动管理网元上的第一去注册定时器的时间信息，所述第一移动管理网元上的第一去注册定时器的时间信息用于指示通信装置2000上的第一去注册定时器已过去的时间或者剩余的时间；处理器2210还用于判断第一移动管理网元是否已经启动第一去注册定时器，并根据判断结果确定收发器2220发送的第一消息携带信息的类型。
若该通信装置2200为第二移动管理网元，上述收发器2220用于向第一移动管理网元第二消息，所述第二消息携带第二移动管理网元在线开户能力信息；通过该收发器2220接收来自第一移动管理网元的第一消息，所述第一消息可以携带在线开户指示信息，或第 一移动管理网元上的第一去注册定时器的时间信息；处理器2210，用于确定通信装置2200是否支持在线开户，以及根据接收的第一消息和通信装置2200是否支持在线开户，执行后续操作。
若该通信装置2200为网络存储网元，上述收发器2220用于接收第二移动管理网元发送的第一请求消息，上述第一请求消息用于请求在网络存储网元中注册移动管理网元的标识信息和在线开户能力信息，或者所述第一请求消息用于请求在网络存储网元中更新移动管理网元的标识信息和在线开户能力信息；收发器2220还用于向第二移动管理网元发送第一响应消息，上述第一响应消息用于指示所述网络存储网元已经接受所述第一请求消息；处理器2210用于根据第一请求消息在NF配置文件中保存移动管理网元标识信息和第二移动管理网元在线开户能力信息。
若该通信装置2200为接入网网元，上述收发器2220用于接收终端发送的注册请求消息，该注册请求消息携带在线开户指示信息，上述在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备；收发器2220还用于向第二移动管理网元发送N2消息，所述N2消息携带所述在线开户指示信息；处理器2210用于根据所述在线开户指示信息选择第二移动管理网元。
可选地，该存储器2230可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。例如，存储器还可以存储设备类型的信息。该处理器2210可以用于执行存储器中存储的指令，并且当该处理器2210执行存储器中存储的指令时，该处理器2210用于执行上述与网络存储网元或移动性管理网元对应的方法实施例的各个步骤和/或流程。
应理解，上述的收发器可以包括发射机和接收机。收发器还可以进一步包括天线，天线的数量可以为一个或多个。存储器可以是一个单独的器件，也可以集成在处理器中。上述的各个器件或部分器件可以集成到芯片中实现，如集成到基带芯片中实现。
在本申请的实施例，图16中的收发器也可以是通信接口，在此不做限定。
在本申请的各实施例中，为了方面理解，进行了多种举例说明。然而，这些例子仅仅是一些举例，并不意味着是实现本申请的最佳实现方式。
在本申请的各实施例中，为了描述的方便，采用了请求消息，响应消息以及其他各种消息的名称。然而，这些消息仅仅是以举例方式说明需要携带的内容或者实现的功能，消息的具体名称并不对本申请的做出限定，例如：还可以是第一消息，第一消息，第三消息等。这些消息可以是具体的一些消息，可以是消息中的某些字段。这些消息还可以代表各种服务化操作。
也应理解，在本申请实施例中，上述装置的处理器可以是中央处理单元(central processing unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现场可编程门阵列(field-programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行 完成，或者用处理器中的硬件及软件单元组合执行完成。软件单元可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器执行存储器中的指令，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL)或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而 前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (45)

  1. 一种去注册的方法，其特征在于，包括：
    接收第一移动管理网元发送的第一消息，所述第一消息携带第一信息，所述第一信息为在线开户指示信息或者所述第一移动管理网元上的第一去注册定时器的时间信息；
    根据所述第一信息启动第二去注册定时器；
    所述第二去注册定时器到期时，触发去注册流程把终端设备从网络去注册。
  2. 根据权利要求1所述的方法，其特征在于，当所述第一信息为所述第一移动管理网元上的第一去注册定时器的时间信息时，所述第一信息用于表示所述第一移动管理网元上的第一去注册定时器已过去的时间，或者用于表示所述第一移动管理网元上的第一去注册定时器剩余的时间。
  3. 根据权利要求2所述的方法，其特征在于，当所述第一信息表示所述第一移动管理网元上的第一去注册定时器剩余的时间时，所述根据所述第一信息启动第二去注册定时器，包括：
    根据所述第一移动管理网元上的第一去注册定时器的剩余时间启动第二去注册定时器。
  4. 根据权利要求2所述的方法，其特征在于，当所述第一信息用于指示所述第一移动管理网元上的第一去注册定时器已过去的时间时，所述根据所述第一信息启动第二去注册定时器，包括：
    根据所述第一移动管理网元上的第一去注册定时器的时间信息和本地配置确定所述第一移动管理网元上的第一去注册定时器的剩余时间；
    根据所述第一移动管理网元上的第一去注册定时器的剩余时间启动第二去注册定时器。
  5. 根据权利要求1所述的方法，其特征在于，当所述第一信息为在线开户指示信息时，所述在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述方法由第二移动管理网元执行，则所述接收第一移动管理网元发送的所述第一消息之前，所述方法还包括：
    向所述第一移动管理网元发送第二消息，所述第二消息携带第二移动管理网元在线开户能力信息，所述第二移动管理网元在线开户能力信息用于指示所述第二移动管理网元是否支持在线开户。
  7. 根据权利要求6中所述的方法，其特征在于，当所述第一信息为所述第一移动管理网元上的第一去注册定时器的时间信息时，所述向所述第一移动管理网元发送所述第二消息之前，所述方法还包括：
    接收接入网网元发送的N2消息，所述N2消息携带所述在线开户指示信息，所述在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备；
    根据所述在线开户指示信息向所述第一移动管理网元发送所述第二消息。
  8. 根据权利要求1至7中任一项所述的方法，其特征在于，所述方法还包括：
    向网络存储网元发送第一请求消息，所述第一请求消息用于请求在网络存储网元中注册移动管理网元的标识信息和在线开户能力信息，或者所述第一请求消息用于请求在网络存储网元中更新移动管理网元的标识信息和在线开户能力信息；
    接收网络存储网元发送的第一响应消息，所述第一响应消息用于指示所述网络存储网元已经接受所述第一请求消息。
  9. 一种去注册的方法，其特征在于，包括：
    确定第二移动管理网元支持在线开户；
    向所述第二移动管理网元发送第一消息，所述第一消息携带第一信息，所述第一信息为在线开户指示信息或者所述第一移动管理网元上的第一去注册定时器的时间信息。
  10. 根据权利要求9所述的方法，其特征在于，包括：
    所述第一信息为在线开户指示信息，所述在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备。
  11. 根据权利要求9所述的方法，其特征在于，包括：
    所述第一信息为所述第一移动管理网元上的第一去注册定时器的时间信息，所述第一信息用于表示所述第一移动管理网元上的第一去注册定时器已过去的时间，或者用于表示所述第一移动管理网元上的第一去注册定时器剩余的时间。
  12. 根据权利要求9至11中任一项所述的方法，其特征在于，所述确定所述第二移动管理网元支持在线开户，包括：
    接收所述第二移动管理网元发送的第二消息，所述第二消息携带第二移动管理网元在线开户能力信息；
    根据所述第二移动管理网元在线开户能力信息确定第二移动管理网元支持在线开户。
  13. 根据权利要求9至11中任一项所述的方法，其特征在于，所述确定所述第二移动管理网元支持在线开户，包括：
    根据本地配置信息确定第二移动管理网元支持在线开户。
  14. 根据权利要求9至11中任一项所述的方法，其特征在于，所述确定所述第二移动管理网元支持在线开户，还包括：
    获取在线开户指示信息，所述在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备；
    根据在线开户指示信息选择支持在线开户的所述第二移动管理网元。
  15. 根据权利要求14所述的方法，其特征在于，所述根据在线开户指示信息选择支持在线开户的所述第二移动管理网元，包括：
    根据在线开户指示信息和本地配置选择所述支持在线开户的所述第二移动管理网元。
  16. 根据权利要求14所述的方法，其特征在于，所述根据在线开户指示信息选择支持在线开户的所述第二移动管理网元，包括：
    向网络存储网元发送第二请求消息，所述第二请求消息携带在线开户指示信息，所述第二请求消息用于请求在所述网络存储网元查找支持在线开户的移动管理网元的实例信息；
    接收所述网络存储网元发送的第二响应消息，所述第二响应消息携带所述网络存储网元查找到的所述支持在线开户的移动管理网元的实例信息，所述支持在线开户的移动管理网元的实例信息包括所述第二移动管理网元的实例信息；
    从所述支持在线开户的移动管理网元的实例信息中选择所述第二移动管理网元。
  17. 根据权利要求14至16中任一项所述的方法，其特征在于，所述获取在线开户指示信息，包括：
    从UE上下文中获取所述在线开户指示信息。
  18. 根据权利要求17所述的方法，其特征在于，所述从UE上下文中获取所述在线开户指示信息之前，所述方法还包括：
    根据从N2或N14消息中获取的所述在线开户指示信息，或根据“SNPN在线开户(SNPNonboarding)”注册类型，在所述UE上下文中保存所述在线开户指示信息。
  19. 一种去注册的方法，其特征在于，包括：
    接收第二移动管理网元发送的第一请求消息，所述第一请求消息用于请求在网络存储网元中注册移动管理网元的标识信息和在线开户能力信息，或者所述第一请求消息用于请求在网络存储网元中更新移动管理网元的标识信息和在线开户能力信息；
    根据所述第一请求消息在NF配置文件中保存所述移动管理网元标识信息和所述第二移动管理网元在线开户能力信息；
    向第二移动管理网元发送第一响应消息，所述第一响应消息用于指示所述网络存储网元已经接受所述第一请求消息。
  20. 根据权利要求19所述的方法，其特征在于，所述方法还包括：
    接收第一移动管理网元的发送第二请求消息，所述第二请求消息用于请求在所述网络存储网元查找支持在线开户的移动管理网元的实例信息；
    根据第二请求消息在NF配置文件查询支持在线开户的移动管理网元的实例信息，所述支持在线开户的移动管理网元的实例信息包括所述第二移动管理网元的实例信息；
    向所述第一移动管理网元发送的第二响应消息，所述第二响应消息携带所述网络存储网元查找到的支持在线开户的移动管理网元的实例信息。
  21. 一种去注册的方法，其特征在于，包括：
    接收第三消息，所述第三消息携带在线开户指示信息，所述在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备；
    根据所述在线开户指示信息选择第二移动管理网元；
    向第二移动管理网元发送N2消息，所述N2消息携带所述在线开户指示信息。
  22. 一种通信装置，其特征在于，包括：
    收发单元，用于接收第一移动管理网元发送的第一消息，所述第一消息携带第一信息，所述第一信息为在线开户指示信息或者所述第一移动管理网元上的第一去注册定时器的时间信息；
    处理单元，用于根据所述第一信息启动第二去注册定时器；所述第二去注册定时器到期时，触发去注册流程把终端设备从网络去注册。
  23. 根据权利要求22所述的通信装置，其特征在于，当所述第一信息为所述第一移动管理网元上的第一去注册定时器的时间信息时，所述第一信息用于表示所述第一移动管 理网元上的第一去注册定时器已过去的时间，或者用于表示所述第一移动管理网元上的第一去注册定时器剩余的时间。
  24. 根据权利要求23所述的通信装置，其特征在于，当所述第一信息表示所述第一移动管理网元上的第一去注册定时器剩余的时间时，所述处理单元根据所述第一移动管理网元上的第一去注册定时器的时间信息启动第二去注册定时器，包括：
    根据所述第一移动管理网元上的第一去注册定时器的剩余时间启动第二去注册定时器。
  25. 根据权利要求23所述的通信装置，其特征在于，当所述第一信息用于指示所述第一移动管理网元上的第一去注册定时器已过去的时间时，所述处理单元根据所述第一移动管理网元上的第一去注册定时器的时间信息启动第二去注册定时器，包括：
    根据所述第一移动管理网元上的第一去注册定时器的时间信息和本地配置确定所述第一移动管理网元上的第一去注册定时器的剩余时间；
    根据所述第一移动管理网元上的第一去注册定时器的剩余时间启动第二去注册定时器。
  26. 根据权利要求22所述的通信装置，其特征在于，所述第一信息为在线开户指示信息，所述在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备。
  27. 根据权利要求22至26中任一项所述的通信装置，其特征在于，所述通信装置为第二移动管理网元，则所述收发单元接收第一移动管理网元发送的所述第一消息之前，还包括：
    向所述第一移动管理网元发送第二消息，所述第二消息携带第二移动管理网元在线开户能力信息，所述第二移动管理网元在线开户能力信息用于指示所述第二移动管理网元是否支持在线开户。
  28. 根据权利要求27中所述的通信装置，其特征在于，当所述第一信息为所述第一移动管理网元上的第一去注册定时器的时间信息时，所述收发单元向所述第一移动管理网元发送所述第二消息之前，还包括：
    接收接入网网元发送的N2消息，所述N2消息携带所述在线开户指示信息，所述在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备；
    根据所述在线开户指示信息向所述第一移动管理网元发送所述第二消息。
  29. 根据权利要求22至28中任一项所述的通信装置，其特征在于，包括：
    向网络存储网元发送第一请求消息，所述第一请求消息用于请求在网络存储网元中注册移动管理网元的标识信息和在线开户能力信息，或者所述第一请求消息用于请求在网络存储网元中更新移动管理网元的标识信息和在线开户能力信息；
    接收网络存储网元发送的第一响应消息，所述第一响应消息用于指示所述网络存储网元已经接受所述第一请求消息。
  30. 一种通信装置，其特征在于，包括：
    处理单元，用于确定第二移动管理网元支持在线开户；
    收发单元，用于向所述第二移动管理网元发送第一消息，所述第一消息携带第一信息， 所述第一信息为在线开户指示信息或者所述第一移动管理网元上的第一去注册定时器的时间信息。
  31. 根据权利要求30所述的通信装置，其特征在于，包括：
    所述第一信息为在线开户指示信息，所述在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备。
  32. 根据权利要求30所述的通信装置，其特征在于，包括：
    所述第一信息为所述第一移动管理网元上的第一去注册定时器的时间信息，所述第一信息用于表示所述第一移动管理网元上的第一去注册定时器已过去的时间，或者用于表示所述第一移动管理网元上的第一去注册定时器剩余的时间。
  33. 根据权利要求30至32中任一项所述的通信装置，其特征在于，所述处理单元确定所述第二移动管理网元支持在线开户，包括：
    所述收发单元接收所述第二移动管理网元发送的第二消息，所述第二消息携带第二移动管理网元在线开户能力信息；
    根据所述第二移动管理网元在线开户能力信息确定第二移动管理网元支持在线开户。
  34. 根据权利要求30至32中任一项所述的通信装置，其特征在于，所述处理单元确定所述第二移动管理网元支持在线开户，包括：
    根据本地配置信息确定第二移动管理网元支持在线开户。
  35. 根据权利要求30至32中任一项所述的通信装置，其特征在于，所述处理单元确定所述第二移动管理网元支持在线开户，还包括：
    获取在线开户指示信息，所述在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备；
    根据在线开户指示信息选择支持在线开户的所述第二移动管理网元。
  36. 根据权利要求35所述的通信装置，其特征在于，所述处理单元根据在线开户指示信息选择支持在线开户的所述第二移动管理网元，包括：
    根据在线开户指示信息和本地配置选择所述支持在线开户的所述第二移动管理网元。
  37. 根据权利要求35所述的通信装置，其特征在于，所述处理单元根据在线开户指示信息选择支持在线开户的所述第二移动管理网元，包括：
    向网络存储网元发送第二请求消息，所述第二请求消息携带在线开户指示信息，所述第二请求消息用于请求在所述网络存储网元查找支持在线开户的移动管理网元的实例信息；
    接收所述网络存储网元发送的第二响应消息，所述第二响应消息携带所述网络存储网元查找到的所述支持在线开户的移动管理网元的实例信息，所述支持在线开户的移动管理网元的实例信息包括所述第二移动管理网元的实例信息；
    从所述支持在线开户的移动管理网元的实例信息中选择所述第二移动管理网元。
  38. 根据权利要求35至37中任一项所述的通信装置，其特征在于，所述处理单元获取在线开户指示信息，包括：
    从UE上下文中获取所述在线开户指示信息。
  39. 根据权利要求38所述的通信装置，其特征在于，所述处理单元从UE上下文中 获取所述在线开户指示信息之前，所述通信装置还包括：
    根据从N2或N14消息中获取的所述在线开户指示信息，或根据“SNPN在线开户(SNPNonboarding)”注册类型，在所述UE上下文中保存所述在线开户指示信息。
  40. 一种通信装置，其特征在于，包括：
    收发单元，用于接收第二移动管理网元发送的第一请求消息，所述第一请求消息用于请求在网络存储网元中注册移动管理网元的标识信息和在线开户能力信息，或者所述第一请求消息用于请求在网络存储网元中更新移动管理网元的标识信息和在线开户能力信息；向第二移动管理网元发送第一响应消息，所述第一响应消息用于指示所述网络存储网元已经接受所述第一请求消息；
    处理单元，用于根据所述第一请求消息在NF配置文件中保存所述移动管理网元标识信息和所述第二移动管理网元在线开户能力信息。
  41. 根据权利要求40所述的通信装置，其特征在于，所述处理单元还用于：
    根据NF配置文件查询支持在线开户的移动管理网元的实例信息，所述支持在线开户的移动管理网元的实例信息包括所述第二移动管理网元的实例信息。
  42. 根据权利要求40所述的通信装置，其特征在于，所述收发单元还用于：
    向所述第一移动管理网元发送的第二响应消息，所述第二响应消息携带所述网络存储网元查找到的支持在线开户的移动管理网元的实例信息；
    接收第一移动管理网元的发送第二请求消息，所述第二请求消息用于请求在所述网络存储网元查找支持在线开户的移动管理网元的实例信息。
  43. 一种通信装置，其特征在于，包括：
    收发单元，用于接收第三消息，所述第三消息携带在线开户指示信息，所述在线开户指示信息用于指示终端设备正在进行在线开户注册，或指示终端设备为在线开户注册的终端设备；向第二移动管理网元发送N2消息，所述N2消息携带所述在线开户指示信息；
    处理单元，用于根据所述在线开户指示信息选择第二移动管理网元。
  44. 一种通信装置，其特征在于，包括：
    收发器，用于接收和发送消息；
    存储器，用于存储计算机程序；
    处理器，用于执行所述存储器中存储的计算机程序，以使得所述装置执行如权利要求1至21中任一项所述的方法；所述处理器与存储器耦合。
  45. 一种计算机可读存储介质，其特征在于，其上存储有计算机程序，所述计算机程序被计算机执行时，以使得实现如权利要求1至21中任一项所述的方法。
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HUAWEI, HISILICON: "AMF relocation for UE registered for onboarding", 3GPP DRAFT; S2-2106054, vol. SA WG2, 10 August 2021 (2021-08-10), pages 1 - 31, XP052053698 *

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