WO2019223425A1 - 一种用于终止接入和移动性管理策略关联的方法和装置 - Google Patents

一种用于终止接入和移动性管理策略关联的方法和装置 Download PDF

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Publication number
WO2019223425A1
WO2019223425A1 PCT/CN2019/080233 CN2019080233W WO2019223425A1 WO 2019223425 A1 WO2019223425 A1 WO 2019223425A1 CN 2019080233 W CN2019080233 W CN 2019080233W WO 2019223425 A1 WO2019223425 A1 WO 2019223425A1
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WIPO (PCT)
Prior art keywords
pcf
amf
terminal device
information
policy
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PCT/CN2019/080233
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English (en)
French (fr)
Inventor
孙海洋
熊春山
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2020565392A priority Critical patent/JP2021525041A/ja
Priority to EP19808130.9A priority patent/EP3813398B1/en
Priority to KR1020207036399A priority patent/KR20210008540A/ko
Priority to BR112020023649-7A priority patent/BR112020023649A2/pt
Publication of WO2019223425A1 publication Critical patent/WO2019223425A1/zh
Priority to US16/952,960 priority patent/US11317274B2/en

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    • 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
    • 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
    • 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
    • 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

Definitions

  • This application relates to the field of communications, and more particularly, to a method and apparatus for terminating access and mobility management policy associations in the field of communications.
  • the terminal device when a terminal device accesses a 5G network, the terminal device initiates a registration process to the access and mobility management function AMF, and then the AMF chooses to execute the policy control function PCF , And establish an access and mobility management AM policy association with the selected PCF to achieve data transmission between the AMF and the PCF.
  • AMF access and mobility management function
  • the AMF that provides services to the terminal device changes from a first AMF to a second AMF.
  • the second AMF may reuse the first PCF associated with the first AMF to establish an AM policy
  • the first AMF may send the identity of the first PCF to the second AMF, so that the second AMF
  • the first PCF can be reused, so that it is not necessary to delete the AM policy control information for the terminal device stored in the first PCF.
  • the AM policy association between the first PCF and the first AMF cannot be deleted, and the first PCF and the first AMF are stored in The AMF policy control information for the terminal device cannot be deleted, which wastes system resources.
  • This application provides a method and device for terminating access and mobility management policy association, which can save system resources.
  • a method for terminating access and mobility management policy association includes:
  • the first access mobility management function AMF sends the first PCF identification information of the first policy control function PCF to the second AMF;
  • the first AMF Sending, by the first AMF, first deletion request information to the first PCF, where the first deletion request information is used to request the first PCF to delete a terminal device between the first PCF and the first AMF AM policy association, the first PCF is different from the second PCF;
  • the second AMF is the AMF currently serving the terminal device
  • the first AMF is the AMF serving the terminal device before the second AMF serves the terminal device
  • the second PCF is the current A PCF serving the terminal device
  • the first PCF is a PCF serving the terminal device before the second PCF serves the terminal device.
  • the first AMF when the second PCF selected by the second AMF and the first PCF are different, the first AMF sends the first PCF to the first PCF.
  • the first deletion request information used to instruct the first PCF to delete the AM policy can cause the first PCF to delete the corresponding AM policy control information, which effectively saves system resources.
  • the sending, by the first AMF, first deletion request information to the first PCF includes:
  • the first AMF When the first AMF does not receive the second deletion request information sent by the first PCF within a preset time period, the first AMF sends the first deletion request information to the second AMF,
  • the second deletion request information is used to request the first AMF to delete AM policy control information for the terminal device between the first PCF and the first AMF.
  • the method further includes:
  • the first AMF After the first AMF receives the deregistration information sent by the unified data management UDM, the first AMF starts a timer, and the duration of the timer is the preset duration.
  • the method further includes:
  • the first AMF After the first AMF sends the first PCF identification information to the second AMF, the first AMF starts a timer, and a duration of the timer is the preset duration.
  • the method before the first AMF sends first deletion request information to the first PCF, the method further includes:
  • a method for terminating access and mobility management policy association includes:
  • the first policy control function PCF receives first deletion request information sent by the first access and mobility management function AMF, and the first deletion request information is used to request the first PCF to delete the first PCF and the first An AM policy association between an AMF for a terminal device, the first PCF and the second PCF are different;
  • the first AMF is an AMF serving the terminal device before the second AMF serves the terminal device
  • the second AMF is an AMF currently serving the terminal device
  • the first PCF is in the The second PCF serves the terminal device before serving the terminal device's PCF
  • the second PCF is the PCF currently serving the terminal device.
  • the first AMF when the second PCF selected by the second AMF and the first PCF are different, the first AMF sends the first PCF to the first PCF.
  • the first deletion request information used to instruct the first PCF to delete an AM policy can cause the first PCF to delete corresponding AM policy control information, which effectively saves system resources.
  • a method for terminating access and mobility management policy association includes:
  • the second access and mobility management function AMF sends the second PCF identification information of the second policy control function PCF to the first AMF; or,
  • the second AMF sends first instruction information to the first AMF, where the first instruction information is used to indicate that the second PCF is different from the first PCF;
  • the second AMF is an AMF currently serving a terminal device
  • the first AMF is an AMF serving the terminal device before the second AMF serves the terminal device
  • the second PCF is a current service office
  • the first PCF is a PCF that serves the terminal device before the second PCF serves the terminal device.
  • the second AMF may determine the second PCF by the first AMF by sending the second PCE identification information or the first indication information to the first AMF Whether it is the same as the first PCF. In this case, if the second PCF and the first PCF are different, the first AMF may send an instruction to the first PCF to instruct the first PCF to delete an AM policy association, so that The first PCF deletes the corresponding AM policy control information, which effectively saves system resources.
  • a method for terminating access and mobility management policy association comprising:
  • the second policy control function PCF receives association request information sent by the second access and mobility management function AMF, where the association request information is used to request establishment of an AM policy association with the second PCF for a terminal device, the association
  • the request information further includes second instruction information for determining whether the second PCF is the same as the first PCF;
  • the second PCF sends second deletion request information to the first AMF according to the second instruction information, and the second deletion request information is used to request the first AMF to delete the first PCF and the first AM policy control information for the terminal device between AMFs;
  • the first PCF stores AM policy control information for the terminal device
  • the second AMF is the AMF currently serving the terminal device
  • the first AMF is the AMF serving the terminal device before the second AMF serves the terminal device
  • the second PCF is the current A PCF serving the terminal device
  • the first PCF is a PCF serving the terminal device before the second PCF serves the terminal device.
  • the method for terminating the access and mobility management policy association is to receive the second PCF that has been associated with the AM policy with the second AMF, and receive the second PCF sent by the second AMF to determine the connection with the first AMF.
  • the AMF has established second indication information whether the first PCF associated with the AM policy is the same as the second PCF, where the first AMF is an AMF serving the terminal device before the second AMF serves the terminal device, and the first The two PCFs send deletion request information according to the second instruction information, so that the second AMF can delete the AM policy control information of the terminal device, and also saves system resources.
  • the sending, by the second PCF, the second deletion request information to the first AMF according to the second instruction information includes:
  • the second PCF sends the second deletion request information to the first AMF.
  • the second indication information includes first PCF identification information of the first PCF.
  • the method further includes:
  • the second PCF determines that the first PCF is the same as the second PCF according to the first PCF identification information and the second PCF.
  • the second PCF receives the identifier of the first PCF (that is, the first PCF identification information) sent by the second AMF, which can be based on The identifier of the first PCF and the identifier of the second PCF determine whether the two PCFs are the same. Therefore, when the first PCF is the same as the second PCF, a deletion request message is sent, so that the first AMF deletes the terminal device.
  • the AM policy control information also saves system resources.
  • a method for terminating access and mobility management policy association includes:
  • the first access and mobility management function AMF receives second deletion request information sent by a second policy control function PCF, and the second deletion request information is used to request the first AMF to delete the first PCF and the first AMF
  • the AM policy control information for the terminal device between the first PCF and the second PCF is the same;
  • the first AMF is an AMF serving the terminal device before the second AMF serves the terminal device
  • the second AMF is an AMF currently serving the terminal device
  • the second PCF is a current service office.
  • the PCF of the terminal device, and the first PCF is a PCF that serves the terminal device before the second PCF serves the terminal device.
  • the method for terminating the access and mobility management policy association provided in the embodiments of the present application, the first AMF that has established the AM policy association with the first PCF according to the received second deletion request information sent by the second AMF, Deleting the AM policy control information of the terminal device saves system resources.
  • a method for terminating access and mobility management policy association includes:
  • the third policy control function PCF receives the first association request information sent by the third access and mobility function AMF for requesting establishment of an association with the AM policy for the terminal device of the third PCF, the first association request information Further including third AMF identification information for identifying the third AMF;
  • the third policy control function PCF receives second association request information sent by the fourth access and mobility management function AMF, and the second association request information is used to request establishment of an AM for the terminal device with the third PCF Policy association, the second association request information further includes fourth AMF identification information for identifying the fourth AMF;
  • the third deletion request information further includes the third AMF identification information
  • the third PCF stores AM policy control information for the terminal device according to the fourth AMF identification information and the third deletion request information.
  • the method for terminating the access and mobility management policy association each of which requires an AMF (for example, a third AMF or a fourth AMF) to establish an AM policy association with a PCF (for example, a third PCF) in
  • AMF for example, a third AMF or a fourth AMF
  • a PCF for example, a third PCF
  • the process of establishing an AM policy association connection sends its own identity to the third PCF, and sends a deletion request message carrying its own identity after a preset period of time.
  • the third PCF receives the latest AMF's
  • the identifier for example, the identifier of the fourth AMF
  • the identifier of the AMF is compared with the identifier of the AMF (for example, the identifier of the third AMF) carried in the received deletion request information. If the two AMFs are different, the third PCF saves the identifier.
  • the AM policy control information is deleted only by the third AMF, which not only reuses the AM policy control
  • a method for terminating access and mobility management policy association including:
  • the third policy control function PCF receives the first association request information sent by the third access and mobility management function AMF, and the first association request information is used to request establishment of an AM policy association with the third PCF for the terminal device.
  • the first association request information further includes third AMF identification information for identifying the third AMF;
  • the third PCF deletes the AM policy control information for the terminal device according to the third AMF identification information and the third deletion request information.
  • each AMF for example, a third AMF or a fourth AMF
  • the PCF for example, a third PCF
  • the third PCF receives the nearest identity of the AMF (for example, when establishing an AM policy association) ,
  • the identifier of the third AMF is compared with the identifier of the AMF carried in the received deletion request information (for example, the identifier of the third AMF), and when the two AMFs are the same, the third PCF deletes the AM policy control information , AMF also deletes AM policy control information, saving system resources.
  • a method for terminating access and mobility management policy association includes:
  • the third access and mobility management function AMF sends to the third policy control function PCF a request for establishing first association request information associated with the AMF's AM policy for the terminal device.
  • the first association request information further includes Third AMF identification information for identifying the third AMF;
  • the third deletion request information further includes the third AMF identification information
  • each AMF for example, the third AMF
  • sends its own identity to the PCF for example, the third PCF
  • sending the deletion request information carrying its own identifier after a preset time period can cause the third PCF to pass the nearest AMF identifier (for example, the third AMF or other AMF) received when establishing the AM policy association and
  • the identifier of the AMF (for example, the identifier of the third AMF) carried in the received deletion request information is compared.
  • the third PCF stores the AM policy control information, and only the third AMF is deleted.
  • AM policy control information or, if the two AMFs are the same, the third PCF deletes the AM policy control information, and the third AMF also deletes the AM policy control information, saving system resources.
  • the method further includes:
  • the third AMF After the third AMF receives the deregistration information sent by the unified data management UDM, the third AMF starts a timer, and the duration of the timer is the preset duration.
  • an apparatus for terminating access and mobility management policy association is provided, and the apparatus may be used to execute any one of the foregoing first to eighth aspects and any possible implementation of any aspect.
  • Mode operation the apparatus may include a module unit for performing each operation in any one of the first aspect to the eighth aspect or any possible implementation manner of any aspect.
  • an apparatus for terminating access and mobility management policy association includes: a processor, a transceiver, and a memory. Among them, the processor, the transceiver and the memory communicate with each other through an internal connection path.
  • the memory is configured to store instructions, and the processor is configured to execute the instructions stored in the memory.
  • the foregoing execution causes the apparatus to execute any one of the foregoing first aspect to the eighth aspect or any method in any possible implementation manner of any aspect.
  • a chip system including a memory and a processor.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program from the memory, so that the communication device installed with the chip system executes the first aspect. Any one of the eighth aspect and its possible embodiments.
  • a computer program product includes: computer program code, when the computer program code is executed by a communication unit, a processing unit or transceiver, or a processor of a communication device (for example, AMF or PCF) So that the communication device executes any one of the above-mentioned first to eighth aspects and possible implementations thereof.
  • a computer-readable storage medium stores a program that causes a communication device (for example, AMF or PCF) to execute the first to eighth aspects and possible implementations thereof. Either method.
  • a communication device for example, AMF or PCF
  • a computer program is provided.
  • the computer program When the computer program is executed on a computer, the computer will implement any one of the first to eighth aspects and the possible implementation methods described above.
  • FIG. 1 is a schematic diagram of a possible network architecture applied to an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a registration process provided by an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of establishing an AM policy association between an AMF and a PCF according to an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of an association between an AMF and a PCF deletion AMF policy according to an embodiment of the present application.
  • FIG. 5 is an interaction schematic diagram of a method for terminating an access and mobility management policy association provided by an embodiment of the present application.
  • FIG. 6 is an interaction diagram of a method for terminating access and mobility management policy association according to another embodiment of the present application.
  • FIG. 7 to 9 are schematic flowcharts of a registration process provided by another embodiment of the present application.
  • FIG. 10 is an interactive schematic diagram of a method for terminating an access and mobility management policy association according to another embodiment of the present application.
  • FIG. 11 is an interactive schematic diagram of a method for terminating an access and mobility management policy association according to another embodiment of the present application.
  • FIG. 12 is a schematic flowchart of a registration process according to another embodiment of the present application.
  • FIG. 13 is a schematic interaction diagram of a method for terminating an access and mobility management policy association according to another embodiment of the present application.
  • FIG. 14 is a schematic flowchart of a registration process according to another embodiment of the present application.
  • 15 to 22 are apparatuses for terminating access and mobility management policy association according to an embodiment of the present application.
  • GSM Global System
  • CDMA Code Division Multiple Access
  • Wideband Code Division Multiple Access Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Global Interoperability for Microwave Access
  • 5G 5G
  • 5G New Radio
  • the terminal device in the embodiments of the present application may refer to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or User device.
  • Terminal equipment can also be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Processing (PDA), wireless communications Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network, or public land mobile network (PLMN) in the future evolution Terminal equipment and the like are not limited in this embodiment of the present application.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Processing
  • wireless communications Functional handheld devices computing devices or other processing devices connected to wireless modems
  • in-vehicle devices wearable devices
  • terminal devices in the future 5G network or public land mobile network (PLMN) in the future evolution Terminal
  • the network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may be a Global System for Mobile (GSM) system or a Code Division Multiple Access (CDMA) system.
  • the base station (Base Transceiver Station, BTS) can also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolutionary base station (Evolutional base station in an LTE system).
  • NodeB NodeB, eNB, or eNodeB
  • the network device can be a relay station, an access point, an in-vehicle device, a wearable device, and a future
  • the network equipment in the 5G network or the network equipment in the future evolved PLMN network is not limited in the embodiments of the present application.
  • FIG. 1 is a possible network architecture applied to an embodiment of the present application.
  • the network architecture is a network architecture described from the perspective of a service-oriented interface, and each network element involved in the network architecture is described separately.
  • the (R) AN network element can manage wireless resources and provide access services for terminal equipment, thereby completing the transfer of control signals and user data between the terminal equipment and the core network.
  • the (R) AN network element can also be understood as a traditional network Base station
  • UPF User Plane Function
  • QoS Quality of Service
  • Data Network A network used to provide data transmission, such as the Internet network.
  • AUSF Authentication Server Function
  • Access and mobility management function mainly used for mobility management and access management, etc., can be used to implement mobility management entity (MME) functions except session management Other functions, such as legal interception and access authorization ⁇ authentication.
  • MME mobility management entity
  • Session Management Function Mainly used for session management, terminal equipment's Internet Protocol (IP) address allocation and management, selection of manageable user plane functions, policy control and charging function interface Endpoints and downlink data notifications.
  • IP Internet Protocol
  • Network Open Function used to securely open to the outside the services and capabilities provided by 3GPP network functions.
  • Network Storage Function It is used to save the description information of network function entities and the services they provide, and support service discovery, network element entity discovery, etc.
  • PCF Policy control function
  • Unified Data Management Used to handle user identification, access authentication, registration, and mobility management.
  • Application Function It is used to route data affected by applications, access network open function network elements, and interact with the policy framework for policy control.
  • Terminal equipment It can 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 stations, MS ), Terminal (terminal), user equipment (UE), soft terminal, etc., such as water meters, electricity meters, sensors, etc.
  • the N2 interface is the reference point for (R) AN120 and AMF160, and is used to send non-access stratum (NAS) messages.
  • the N3 interface is between (R) AN120 and UPF130. Reference point for transmitting user plane data, etc .;
  • N4 interface is a reference point between SMF170 and UPF130, for transmitting information such as tunnel identification information for N3 connections, data cache indication information, and downlink data notification messages;
  • N6 interface It is the reference point between UPF130 and DN140, and is used to transmit user plane data.
  • the foregoing network architecture applied to the embodiment of the present application is merely an exemplary network architecture described from the perspective of a service-oriented architecture, and the network architecture applicable to the embodiment of the present application is not limited to this.
  • the functions of the network architecture are applicable to the embodiments of the present application.
  • network function entities such as AMF 160, SMF 170, PCF 1110, and UDM 1120 are called network functions (NF); or, in other network architectures, AMF 160, SMF 170, The collection of network function entities such as PCF1110, UDM1120 can be called Control Plane Function (CPF).
  • CPF Control Plane Function
  • the above network architecture is taken as an example, and with reference to FIG. 2, the registration process after the terminal device involved in the embodiment of the present application accesses the network is briefly introduced.
  • the terminal device sends a registration request to the (R) AN.
  • the (R) AN selects an appropriate AMF for the terminal device that can serve the terminal device.
  • the (R) AN sends a registration request to the second AMF.
  • the second AMF sends the first AMF information for requesting the context of the terminal device stored in the first AMF.
  • the AMF serving the terminal device is changed from the original first AMF to the second AMF currently serving the terminal device. Since the first AMF already stores information about the terminal device Therefore, the second AMF may request the context of the terminal device from the first AMF.
  • the context of the terminal device may be understood as: parameters related to the U terminal device that are interconnected between the terminal device or each network function entity, for example, the parameters may be a set of interface parameters.
  • the first AMF feeds back the context of the terminal device to the second AMF.
  • the context of the terminal device may further include identification information of a PCF (recorded as the first PCF) for establishing an AMF policy association with the first AMF.
  • a PCF recorded as the first PCF
  • the second AMF does not obtain a subscription permanent identifier (SUPI) from the terminal device or the first AMF, the second AMF sends a subscription to the terminal device to request a subscription encrypted identifier (Subscription, Concealed Identifier, SUCI) request information.
  • SUPI subscription permanent identifier
  • Subscription, Concealed Identifier, SUCI subscription encrypted identifier
  • the terminal device sends response information indicating SUCI to the second AMF.
  • the second AMF selects AUSF.
  • the AUSF authenticates the terminal device.
  • the second AMF sends information used to indicate that the second AMF has received the context of the terminal device to the first AMF.
  • the second AMF does not obtain a permanent equipment identifier (PEI) from the terminal device or the first AMF, the second AMF sends information for requesting PEI to the terminal device.
  • PEI permanent equipment identifier
  • the second AMF initiates mobile device (Mobile Equipment, ME) identification verification.
  • mobile device Mobile Equipment, ME
  • the second AMF selects UDM.
  • the second AMF performs registration in the selected UDM and obtains contract information.
  • the UDM notifies the first AMF to delete the context of the terminal device.
  • the second AMF selects a PCF (for example, a second PCF) capable of providing services to the terminal device.
  • a PCF for example, a second PCF
  • the selection of the PCF by the AMF needs to consider the geographical location of the terminal device.
  • the AMF only needs to select one H-PCF located in the H-PLMN.
  • the AMF needs to select two PCFs, one PCF is a V-PCF located in the V-PLMN and the other PCF is located in the H-PLMN H-PCF.
  • the second PCF selected by the second AMF may be the first PCF previously associated with the first AMF to establish an AM policy, or it may be a PCF different from the first PCF.
  • the second AMF and the second PCF establish an AM policy association.
  • FIG. 3 is a schematic diagram of the process of establishing AMF policy association between AMF and PCF. As shown in Figure 3,
  • the second AMF determines to establish an AM policy association with the second PCF.
  • the second AMF sends association request information to the second PCF to request establishment of an AM policy association with the second PCF.
  • the second PCF sends an AM policy to the second AMF.
  • the AM policy includes: access and mobility related policy information (Access and mobility related policy information) and UE access selection and packet data unit session selection related policy information (UE access selection and Packet Data Unit (PDU) Session selection selection related policy information, where the UE access selection and PDU selection related policy information includes access network discovery and selection policies (Access Network Discovery & Selection Policy (ANDSP)) and UE routing selection policies (UE Route Selection Selection Policy (URSP)).
  • access and mobility related policy information access and mobility related policy information
  • PDU Packet Data Unit Session selection selection related policy information
  • the UE access selection and PDU selection related policy information includes access network discovery and selection policies (Access Network Discovery & Selection Policy (ANDSP)) and UE routing selection policies (UE Route Selection Selection Policy (URSP)).
  • access network discovery and selection policies Access Network Discovery & Selection Policy (ANDSP)
  • URSP UE Route Selection Selection Policy
  • the second AMF deploys the AM policy, or the second AMF deploys the AM policy and the context of the terminal device.
  • the second AMF stores the access and mobility related policy information in the AM policy, and sends the UE access selection and PDU session selection related policy information to the terminal device.
  • the type of PCF selected by the AMF based on the geographical location of the terminal device is different. Then, the AMF and the PCF can establish a policy association between the AMF and the PCF for the terminal device based on the type of the PCF.
  • the second PCF may be at least one of a second V-PCF and a second H-PCF.
  • the second AMF since the second AMF only needs to select one H-PCF located in the H-PLMN, the second AMF only needs to establish an AM policy association between the second AMF and the second H-PCF .
  • the The second AMF sends the association request information to the second V-PCF.
  • the second V-PCF sends the association request information to the second H-PCF.
  • the second H-PCF sends the second H-PCF to the second H-PCF.
  • the AM policy of the terminal device is sent to the second V-PCF.
  • the second V-PCF can process the AM policy for the terminal device in the second V-PCF and the AM policy for the terminal device in the second H-PCF. , Sending the processed AM policy for the terminal device to the AMF, and further, the AMF deploys the AM policy.
  • the second AMF selected by the second AMF is the first PCF previously associated with the first AMF, that is, the first PCF is reused, the second AMF can only deploy the AM policy; if the second AMF selects the first PCF, The second PCF is different from the first PCF, that is, the first PCF is not reused, the second AMF needs to deploy an AM policy and the context of the terminal device.
  • the second AMF sends a session management context update request to the SMF to activate a Protocol Data Unit (Protocol Data Unit) session.
  • Protocol Data Unit Protocol Data Unit
  • FIG. 4 shows a schematic diagram of the process of deleting the AM policy association between the AMF and the PCF. As shown in Figure 4,
  • the first AMF determines to terminate or delete the AM policy association.
  • the first AMF sends a deletion request information for requesting deletion of an AM policy association for the terminal device to the first PCF, where the deletion request information includes an identifier of the terminal device;
  • the first PCF deletes the AM policy control information for the terminal device stored in the first PCF, and sends a response message to the first AMF to inform the first AMF that the deletion operation for the AM policy has been completed;
  • the AM policy control information for the terminal device stored in the first PCF includes at least the identifier of the terminal device, the AM policy, and the identifier of the corresponding AM policy.
  • S2194 The first AMF deletes the AM policy control information for the terminal device stored in the first AMF.
  • the AM policy control information of the terminal device stored in the first AMF includes at least the identifier of the first PCF and the AM policy.
  • the first AMF may also delete the subscription of the event requested by the AM policy association detected by the first AMF.
  • the first PCF may be any one of the first V-PCF or the first H-PCF.
  • the first AMF sends a deletion request message to the first V-PCF, so that the first V-PCF deletes the terminal device.
  • AM policy control information The first H-PCF does not need to delete the AM policy control information of the terminal device.
  • the first PCF is V-PCF. If neither H-PCF nor V-PCF is reused, the The first AMF sends the deletion request information to the first V-PCF, and sends the deletion request information to the first H-PCF through the first V-PCF, so that both the first H-PCF and the first V-PCF are deleted
  • the AM policy control information of the terminal device In this case, the first PCF is any one of the first V-PCF or the first H-PCF. In a non-roaming scenario, the first PCF is only the first H-PCF.
  • the deletion request information of the first AMF may be a request for the first H-PCF to delete the AM policy association of the terminal device
  • the first AMF sending the deletion request information to the first H-PCF may be interpreted as the first AMF
  • the deletion request information is sent to the first H-PCF through the first V-PCF.
  • the second AMF sends information to the terminal device to indicate that the registration request of the terminal device has been accepted.
  • the terminal device sends information to the second AMF to indicate that registration has been completed.
  • the first AMF sends the identity of the first PCF to the second AMF, in fact, the PCF selected by the second AMF is not associated with the first AMF to establish an AM policy.
  • the first PCF is a second PCF different from the first PCF. In this case, the AM policy association between the first AMF and the first PCF cannot be deleted, and system resources are wasted.
  • the embodiments of the present application provide a method for terminating the association between an access and a mobility management policy, which is helpful for solving the foregoing problems.
  • the second AMF is the AMF currently serving the terminal device
  • the second PCF is the PCF currently serving the terminal device
  • an AM policy association is established between the second PCF and the second AMF
  • the first AMF is The AMF serving the terminal device is served before the second AMF serves the terminal device.
  • the first PCF is the PCF serving the terminal device before the second PCF serves the terminal device.
  • An AM policy is established between the first PCF and the first AMF. Associated.
  • the first AMF, the second AMF, the first PCF, and the second PCF are all network elements serving the terminal device. Due to the movement of the terminal device, the AMF serving the terminal device is changed from the first AMF to The second AMF, correspondingly, the PCF serving the terminal device is changed from the first PCF to the second PCF.
  • first AMF may correspond to the first AMF in FIG. 2
  • second AMF may correspond to the second AMF in FIG. 2
  • first PCF may correspond to the first PCF in FIG. 2
  • second PCF may correspond to the second in FIG. 2.
  • FIG. 5 is an interaction diagram of a method 300 for terminating access and mobility management policy association according to an embodiment of the present application. Hereinafter, each step in the method 300 will be described in detail with reference to FIGS. 5 and 2.
  • the first AMF sends the first PCF identification information of the first PCF to the second AMF;
  • S310 may correspond to S205 in FIG. 2.
  • the first PCF identification information may be carried in the context of the terminal device, from the first AMF serving the terminal device to the second AMF currently serving the terminal device. Send the first PCF identification information, so that the second AMF can select the first PCF when selecting the PCF, so as to reuse the first PCF.
  • the first AMF sends first deletion request information to the first PCF.
  • the first deletion request information is used to request the first PCF to delete the AM policy association between the first PCF and the first AMF for the terminal device.
  • the first PCF Different from the second PCF.
  • the first AMF when the first AMF determines that the first AMF is not selected by the second AMF (that is, the first PCF is different from the second PCF), the first AMF sends first deletion request information to the first PCF, indicating that The first PCF deletes the AM policy association between the first PCF and the first AMF for the terminal device, or in other words, instructs the first PCF to terminate the AM policy association between the first PCF and the first AMF for the terminal device.
  • the first PCF deletes the AM policy control information for the terminal device; in S340, the first AMF deletes the AM policy control information for the terminal device.
  • the first PCF deletes the AM policy control information for the terminal device stored in the first PCF.
  • the AM policy control information for the terminal device stored in the first PCF includes at least the identifier of the terminal device, the AM policy, and the identifier of the corresponding AM policy.
  • the first AMF After the first AMF sends the first deletion request information, it also deletes the AM policy control information stored in the first AMF.
  • the AM policy control information in the first AMF includes at least the identifier of the first PCF and the AM policy.
  • the first AMF may further delete the subscription of the event requested by the AM policy association detected by the first AMF.
  • the first deletion request information includes an identifier of the terminal device.
  • the terminal device is in a roaming scenario and a non-roaming scenario, and the first PCF is further described.
  • the first PCF is the first H-PCF.
  • the first PCF may be any one of the first H-PCF or the first V-PCF.
  • the first AMF thinks that the second AMF can reuse the first H-PCF and the first V-PCF, it can send the first H-PCF identification and the first V-PCF identification to the second AMF, and the first AMF finally Send a first deletion request to a PCF (at least one of V-PCF or H-PCF) that is not reused.
  • the first AMF sends the first deletion request information to the first V-PCF.
  • the first PCF is the first V-PCF; however, the first AMF may send the first V-PCF to the first V-PCF.
  • the two AMFs send the identification of the first H-PCF and the identification of the first V-PCF, or the first AMF may only send the identification of the first V-PCF to the second AMF, and the embodiment of the present application is not limited thereto.
  • the first AMF sends the first deletion request information to the first V-PCF, and sends the first deletion request information to the first V-PCF to The first H-PCF, so that both the first H-PCF and the first V-PCF delete the AM policy control information of the terminal device.
  • the first PCF is the first V-PCF or the first H-PCF. Any one of them.
  • the first AMF may send the identity of the first H-PCF and the identity of the first V-PCF to the second AMF.
  • the first AMF sends a deletion request message to the first V-PCF.
  • the first AMF passes the first V-PCF.
  • the PCF sends the first deletion request information to the first H-PCF.
  • the first AMF when the second PCF selected by the second AMF and the first PCF are different, the first AMF sends the first PCF to the first PCF.
  • the first deletion request information used to instruct the first PCF to delete the AM policy can cause the first PCF to delete the corresponding AM policy control information, which effectively saves system resources.
  • the first AMF1 may determine whether the first PCF and the second PCF are the same through the following two modes (that is, modes 1 and 2). The following describes modes 1 and 2 respectively.
  • the first AMF does not receive the second deletion request information sent by the first PCF within a preset time period, the first AMF sends the first deletion request information to the second AMF, wherein the second deletion request information is used for requesting The first AMF deletes AM policy control information for the terminal device between the first PCF and the first AMF.
  • the deletion request information for example, the first deletion request information
  • the deletion request information can be sent to the first PCF through the first AMF
  • the deletion request information can be sent to the first AMF through the first PCF.
  • the second deletion request information The difference is that the first AMF sends the first deletion request information to the first PCF when the first PCF is different from the second PCF, so that the first PCF deletes the AM policy for the terminal device in the first PCF. Control information; the first PCF sends the second deletion request information to the first AMF when the first PCF is the same as the second PCF, so that the first AMF deletes only the AM policy for the terminal device in the first AMF Control information.
  • the first PCF since the first PCF is reused, the first PCF stores the AM policy control information for the terminal device in the first PCF.
  • the first AMF may send the first deletion request information to the first PCF.
  • the preset time is greater than or equal to the time occupied by the second AMF to select the PCF.
  • the first AMF may set a preset duration by turning on a timer at any possible time.
  • the duration of the first AMF turning on timer is described by way of example 1A and 1B.
  • the first AMF After the first AMF receives the deregistration information sent by the unified data management UDM, the first AMF starts a timer whose duration is the preset duration.
  • a step in which the first AMF receives a deregistration message sent by the UDM may correspond to S215 in FIG. 2.
  • the first AMF After the first AMF sends the first PCF identification information to the second AMF, the first AMF starts a timer, and the duration of the timer is the preset duration.
  • the step of the first AMF sending the first PCF identification information to the second AMF may correspond to S205 in FIG. 2.
  • the first AMF may also start the timer after receiving the message sent by the second AMF to request the context of the terminal device, and the preset duration corresponding to the started timer is greater than that corresponding to the timers in Mode 1A and Mode 1B. Preset duration.
  • the first AMF may determine whether the first PCF and the second PCF are the same by receiving the information sent by the second AMF.
  • the information received by the first AMF is described by way of Mode 2A and Mode 2B.
  • the first AMF receives the second PCF identification information of the second PCF sent by the second AMF.
  • the first AMF receives the second PCF identification information sent by the second AMF. That is, as long as the second AMF completes the process of selecting the PCF, the identifier of the selected PCF (for example, the second PCF) can be sent to the first AMF, so that the first AMF can receive the identifier of the second PCF and The identifier of the first PCF that the first AMF has confirmed is compared. If the identifier of the first PCF is different from the identifier of the second PCF, it means that the first PCF is not reused, and a first deletion request can be sent to the first PCF. information.
  • the second PCF identification information sent by the second AMF. That is, as long as the second AMF completes the process of selecting the PCF, the identifier of the selected PCF (for example, the second PCF) can be sent to the first AMF, so that the first AMF can receive the identifier of the second PCF and The identifier of the first PCF that the first AMF has confirmed is
  • the first AMF receives first indication information sent by the second AMF, and the first indication information is used to identify that the first PCF is different from the second PCF.
  • the first AMF receives the first indication information sent by the second AMF.
  • the second AMF can determine the PCF associated with the second AMF to establish an AM policy.
  • the second AMF will send the first PCF carried in the context of the terminal device from the first AMF.
  • the identifier is compared with the identifier of the second PCF, and the comparison result (for example, the first instruction information) is sent to the first AMF, or the first instruction information is sent only when the first PCF and the second PCF are different. So that after receiving the first instruction information, the first AMF can determine whether the first PCF and the second PCF are the same. If the first PCF and the second PCF are different, it means that the first PCF is not reused. Then, the first deletion request information can be sent to the first PCF.
  • FIG. 7 is another schematic flowchart of a registration process according to an embodiment of the present application. Each step is explained below.
  • S401-S404 may correspond to S201-S204 in FIG. 2, respectively. To avoid redundant description, reference may be made to the description of S201-S204 in FIG. 2;
  • the first AMF sends the context of the terminal device to the second AMF.
  • the context of the terminal device includes first PCF identification information.
  • the first AMF starts a timer.
  • S406-S414 may correspond to S206-S214 in FIG. 2, respectively. To avoid redundant description, reference may be made to the description of S206-S214 in FIG.
  • the UDM sends deregistration information to the first AMF.
  • the first AMF starts a timer.
  • S4051 and S4151 are two alternative steps, that is, the first AMF either executes S4051 or S4151.
  • S416-S418 may correspond to S216-S218 in FIG. 2, respectively. To avoid redundant description, reference may be made to the description of S216-S218 in FIG.
  • S4191-S4193 may correspond to S320-S340 in FIG. 5, respectively. To avoid redundant description, reference may be made to the description of S320-S340 in FIG.
  • S420-S421 may correspond to S220-S221 in FIG. 2, respectively. To avoid redundant description, reference may be made to the description of S220-S221 in FIG.
  • FIG. 8 is another schematic flowchart of a registration process according to an embodiment of the present application. Each step is explained below.
  • S501-S517 may correspond to S201-S217 in FIG. 2, respectively. To avoid redundant description, reference may be made to the description of S201-S217 in FIG.
  • the second AMF After selecting the second PCF, the second AMF sends the second PCF identification information or the first instruction information to the first AMP.
  • S518 may correspond to S218 in FIG. 2. To avoid redundant description, reference may be made to the description of S218 in FIG. 2.
  • S5191-S5193 may correspond to S320-S340 in FIG. 5, respectively. To avoid redundant description, reference may be made to the description of S320-S340 in FIG.
  • S520-S521 may correspond to S220-S221 in FIG. 2 respectively. To avoid redundant description, reference may be made to the description of S220-S221 in FIG. 2.
  • FIG. 9 is another schematic flowchart of a registration process according to an embodiment of the present application. Each step is explained below.
  • S601-S612 may correspond to S201-S212 in FIG. 2, respectively. To avoid redundant description, reference may be made to the description of S201-S212 in FIG.
  • S613 may correspond to S216 in FIG. 2
  • S614 may correspond to S217 in FIG. 2
  • S615 may correspond to S213 in FIG. 2. To avoid redundant description, reference may be made to the description of S216, S217, and S213 in FIG. 2.
  • the second AMF sends registration information to the UDM.
  • the registration information includes second PCF identification information or first indication information.
  • the second AMF sends request information for requesting restoration of AM subscription data and SMF selection subscription data and context of the terminal device to the UDM.
  • the request information includes second PCF identification information or first indication information.
  • the UDM sends information to the first AMF to instruct the first AMF to delete the context of the terminal device, and the information includes the second PCF identification information or the first instruction information obtained by the UDM from S6161 or S6162.
  • S618 may correspond to S218 in FIG. 2. To avoid redundant description, reference may be made to the description of S218 in FIG. 2.
  • S6191-S6193 may correspond to S320-S340 in FIG. 5, respectively. To avoid redundant description, reference may be made to the description of S320-S340 in FIG.
  • S620-S621 may correspond to S220-S221 in FIG. 2 respectively. To avoid redundant description, reference may be made to the description of S220-S221 in FIG. 2.
  • first AMF the second AMF
  • first PCF the first PCF
  • second PCF the second PCF
  • FIG. 10 is an interaction diagram of a method 700 for terminating access and mobility management policy association according to another embodiment of the present application. Each step in the method 700 is described in detail below.
  • the first AMF sends first PCF identification information for identifying the first PCF to the second AMF.
  • S710 may correspond to S205 in FIG. 2, and for specific description, reference may be made to the description of S205.
  • the second AMF sends association request information to the second PCF, where the association request information is used to request establishment of an AM policy association with the second PCF for the terminal device, and the association request information further includes a method for determining the second PCF The second indication information whether it is the same as the first PCF.
  • the second AMF may send the second instruction information received from the first AMF to the second PCF through the association request information.
  • the second instruction information may be directly used to indicate whether the first PCF is the same as the second PCF. For example, “1" indicates the same, and "0" indicates that they are different.
  • the second AMF may determine whether the first PCF is the same as the second PCF by comparing the identifier of the first PCF obtained in S701 with the identifier of the second PCF selected by the second AMF. Sending the generated second instruction information to the second PCF, so that the second PCF determines whether it is reused; or
  • the second indication information may include first PCF identification information of the first PCF.
  • the second AMF may send the first PCF identification information received in S701 as the second instruction information to the second PCF, so that the second PCF may use the first PCF identification and The identifiers of the second PCF are compared to determine whether the first PCF is the same as the second PCF.
  • the second PCF sends second deletion request information to the first AMF according to the second instruction information, where the second deletion request information is used to request the first AMF to delete the first PCF and the first AMF.
  • AM policy control information of the terminal device is used to request the first AMF to delete the first PCF and the first AMF.
  • the second PCF determines whether the first PCF is the same as the second PCF according to the second instruction information, thereby determining whether to send deletion request information to the first AMF.
  • the second PCF when the first PCF is the same as the second PCF, the second PCF sends the second deletion request information to the first AMF; in addition,
  • the second PCF stores AM policy control information for the terminal device
  • the first AMF deletes the AM policy control information for the terminal device.
  • the second PCF determines that the first PCF is the same as the second PCF according to the second instruction information, it means that the first PCF is reused, and the second PCF is the first PCF.
  • the first A PCF (or, a second PCF) sends the second deletion request information to the first AMF, but the first PCF stores the AM policy control information for the terminal device stored in the first PCF, so as to reuse the terminal device's AM Policy control information; after receiving the second deletion request information, the first AMF knows that it no longer has an AM policy association with the first PCF, and therefore deletes the AM policy control information stored in the first AMF.
  • the terminal PC is in a roaming scenario, and the related steps of the first PCF are further described.
  • the first PCF is any one of the first V-PCF or the first H-PCF.
  • the first H-PCF sends deletion request information through the first V-PCF, and the first H-PCF saves the AM policy control of the terminal device Information, the first PCF is the first H-PCF.
  • the first H-PCF and the first V-PCF are reused, only the first V-PCF needs to send the deletion request information, and the first PCF is the first V-PCF.
  • the first V-PCF not only sends the second deletion request information to the first AMF, but also needs to send the deletion request information to the first H-PCF in order to Make the first H-PCF delete the AM policy control information of the terminal device stored in the first H-PCF.
  • the second PCF does not send the second deletion request information to the first AMF.
  • the second PCF is not a reused PCF, and it is not necessary to send the second deletion request information to the first AMF.
  • the method for terminating the access and mobility management policy association is to receive the second PCF that has been associated with the AM policy with the second AMF, and receive the second PCF sent by the second AMF to determine the connection with the first AMF.
  • the AMF has established second indication information whether the first PCF associated with the AM policy is the same as the second PCF, where the first AMF is an AMF serving the terminal device before the second AMF serves the terminal device, and the first The two PCFs send deletion request information according to the second instruction information, so that the second AMF can delete the AM policy control information of the terminal device, and also saves system resources.
  • An embodiment of the present application further provides a method for terminating an association between an access and a mobility management policy.
  • the method provided by another embodiment of the present application is described below with reference to FIGS. 11 to 14.
  • the AMF associated with the AM policy established with the PCF can send its own identity to the PCF during the connection establishment process, and the PCF stores the identity of the AMF. If a new AMF subsequently needs to establish an AMF strategy association with the PCF, the PCF will replace the previously received AMF.
  • the PCF may send the deletion request information including its own ID. In this way, the PCF can further determine whether it is reused by checking whether the AMF identifier received twice is the same: If the AMF identifier received twice before and after the PCF is the same, it means that it is reused, and it is stored and stored in the PCF.
  • the AM policy control information of the terminal device if the AMF identifiers received by the PCF two times before and after are different, it means that they have not been reused, and the AM policy control information for the terminal device stored in the PCF is deleted.
  • the method 800 describes the technical solution in the case where the PCF is reused, and the method 1000 describes the technical solution in the case where the PCF is not reused.
  • the fourth AMF is the AMF currently serving the terminal device
  • the third PCF is the PCF currently serving the terminal device
  • an AM policy association is established between the third PCF and the fourth AMF
  • the third AMF is the first Four AMFs serve the terminal device's AMF before serving the terminal device.
  • an AM policy association is also established between the third PCF and the third AMF.
  • FIG. 11 is an interaction diagram of a method 800 for terminating an access and mobility management policy association according to another embodiment of the present application.
  • the third AMF sends a first association request information to the third PCF for requesting to establish an association with the AM policy of the third PCF for the terminal device.
  • the first association request information further includes a third deletion for instructing the third AMF. Request information.
  • the identifier of the third AMF is carried in the first association request information.
  • the fourth AMF sends a second association request information to the third PCF for requesting establishment of an AM policy association with the terminal device of the third PCF.
  • the second association request information further includes a fourth AMF for indicating the fourth AMF. Identification information.
  • the fourth AMF needs to re-establish the AM policy association with the third PCF.
  • the third AMF carries the identity of the fourth AMF when sending the second association request information to the third PCF.
  • the third PCF and the third PCF receive the AMF identity during the establishment of the policy association with the AMF, the AMF identity received later will replace the AMF identity received previously.
  • the third PCF will store the The identification of the third AMF in the third PCF is replaced with the identification of the fourth AMF. In this way, it can be ensured that the third PCF can compare the identity of the recently received AMF with the identity of the AMF received in S830.
  • the third AMF sends a third deletion request message to the third PCF after the preset time period, and the third deletion request message is used to request the third PCF to delete the AM policy for the terminal device between the third PCF and the third AMF.
  • Association, the third deletion request information further includes third AMF identification information.
  • the third AMF sends a third deletion request message to the third PCF after the preset duration, where the preset duration is greater than or equal to the duration of the fourth AMF selecting the PCF, so that the third PCF can obtain the latest
  • the identity of the AMF ie, the identity of the fourth AMF
  • the newly stored identity of the fourth AMF and the identity of the third AMF in the third deletion request information are effectively compared.
  • the third AMF After the third AMF receives the deregistration information sent by the unified data management UDM, the third AMF starts a timer whose duration is the preset duration.
  • the step of the third AMF receiving the deregistration message sent by the UDM may correspond to S215 in FIG. 2.
  • the third AMF may also start a timer, and the duration of the timer is the preset duration.
  • the step of the third AMF sending the third PCF identification information to the fourth AMF may correspond to S205 in FIG. 2.
  • the third PCF does not delete the AM policy control information for the terminal device according to the fourth AMF identification information and the third deletion request information.
  • the third PCF compares the fourth AMF with the third AMF and determines that the two AMFs are different, which means that the third PCF has previously established an AM policy association with the third AMF serving the terminal device, and it is now the same An AM policy association is established for the fourth AMF serving the terminal device, then it means that the third PCF is reused, so the third PCF does not delete the AM policy control information for the terminal device in the third PCF and saves it .
  • the third AMF deletes the AM policy control information for the terminal device.
  • the method for terminating the access and mobility management policy association each of which requires an AMF (for example, a third AMF or a fourth AMF) to establish an AM policy association with a PCF (for example, a third PCF) in
  • AMF for example, a third AMF or a fourth AMF
  • a PCF for example, a third PCF
  • the process of establishing an AM policy association connection sends its own identity to the third PCF, and sends a deletion request message carrying its own identity after a preset period of time.
  • the third PCF receives the latest AMF's
  • the identifier for example, the identifier of the fourth AMF
  • the AM policy control information only the third AMF deletes the AM policy control information, which not only reuses the AM policy control information in the PCF, but also saves system resources.
  • S901-S914 may correspond to S201-S214 in FIG. 2, respectively. To avoid redundant description, reference may be made to the description of S201-S214 in FIG. 2;
  • the UDM sends deregistration information to the third AMF.
  • the third AMF starts a timer.
  • the fourth AMF selects PCF, which may correspond to S216 shown in FIG. 2. To avoid redundant description, reference may be made to the description of S216 in FIG.
  • S917 the fourth AMF establishes an AM policy association with the third PCF.
  • S917 includes S9171-S9174, which may correspond to S2171-S2174 in FIG. 3, respectively.
  • the fourth AMF sends the second association request information to the third PCF, and the second association request information carries fourth AMF identification information for identifying the fourth AMF.
  • S918 may correspond to S218 in FIG. 2.
  • the third AMF sends the third deletion request information to the third PCF, which may correspond to S830 in FIG. 11. To avoid redundant description, reference may be made to the description of S830 in FIG. 11.
  • the third PCF stores the AM policy control information for the terminal device stored in the third PCF, which may correspond to S840 in FIG. 11. To avoid redundant description, reference may be made to the description of S840 in FIG. 11.
  • the third AMF deletes the AM policy control information for the terminal device stored in the third AMF, which may correspond to S850 in FIG. 11. To avoid redundant description, reference may be made to the description of S850 in FIG. 11.
  • S920-S921 may correspond to S220-S221 in FIG. 2 respectively. To avoid redundant description, reference may be made to the description of S220-S221 in FIG. 2.
  • FIG. 13 is an interaction diagram of a method 1000 for terminating an access and mobility management policy association according to another embodiment of the present application.
  • the fourth AMF is the AMF currently serving the terminal device
  • the fourth PCF is the PCF currently serving the terminal device
  • an AM policy association is established between the fourth PCF and the fourth AMF
  • the third AMF is Before the fourth AMF serves the terminal device, the AMF of the terminal device is served.
  • an AM policy association is also established between the third PCF and the third AMF.
  • the fourth PCF is a PCF different from the third PCF and associated with the fourth AMF to establish an AM policy.
  • the third AMF sends to the third PCF the first association request information for requesting to establish an AM policy association with the terminal device of the third PCF.
  • the first association request information further includes third AMF identification information of the third AMF.
  • the identifier of the third AMF is carried in the first association request information.
  • the fourth AMF sends a fourth association request information to the fourth PCF to request establishment of an association with the third PCF's AM policy for the terminal device.
  • the second association request information further includes fourth AMF identification information of the fourth AMF. .
  • the fourth AMF needs to re-establish the AM policy association with the fourth PCF.
  • the third AMF carries the identity of the fourth AMF when sending the second association request information to the fourth PCF.
  • the third AMF sends a third deletion request message to the third PCF after the preset time period, and the third deletion request message is used to request the third PCF to delete the AM policy for the terminal device between the third PCF and the third AMF Association, the third deletion request information further includes third AMF identification information.
  • the third AMF sends a third deletion request message to the third PCF after the preset duration, where the preset duration is greater than or equal to the duration of the fourth AMF selecting the PCF, so that the third PCF can obtain the latest
  • the identity of the AMF ie, the identity of the third AMF
  • the newly stored identity of the third AMF and the identity of the third AMF in the third deletion request information are effectively compared.
  • the third AMF After the third AMF receives the deregistration information sent by the unified data management UDM, the third AMF starts a timer whose duration is the preset duration.
  • the step of the third AMF receiving the deregistration message sent by the UDM may correspond to S215 in FIG. 2.
  • the third AMF may also start a timer, and the duration of the timer is the preset duration.
  • the step of the third AMF sending the third PCF identification information to the fourth AMF may correspond to S205 in FIG. 2.
  • the third PCF deletes the AM policy control information for the terminal device according to the third AMF identification information and the third deletion request information.
  • the third PCF compares the identifier of the AMF carried in the most recently received association request information (ie, the first association request information) with the identifier of the AMF carried in the third deletion request information to determine the two AMFs.
  • the PCF is not reused, and the fourth AMF selects another PCF. Therefore, the third PCF deletes the AM policy control information for the terminal device in the third PCF.
  • S1050 The third AMF deletes the AM policy control information for the terminal device.
  • each AMF for example, a third AMF or a fourth AMF
  • the PCF for example, a third PCF
  • the third PCF receives the nearest identity of the AMF (for example, when establishing an AM policy association) ,
  • the identifier of the third AMF is compared with the identifier of the AMF carried in the received deletion request information (for example, the identifier of the third AMF), and when the two AMFs are the same, the third PCF deletes the AM policy control information , AMF also deletes AM policy control information, saving system resources.
  • the third AMF sends first association request information to the third PCF when establishing an AM policy association with the third PCF, and the first association request information carries third AMF identification information of the third AMF.
  • S1101-S1114 may correspond to S201-S214 in FIG. 2 respectively. To avoid redundant description, reference may be made to the description of S201-S214 in FIG. 2;
  • the UDM sends registration information to the third AMF.
  • the third AMF starts a timer.
  • the fourth AMF selects PCF, which may correspond to S216 shown in FIG. 2. To avoid redundant description, reference may be made to the description of S216 in FIG. 2.
  • the fourth AMF establishes an AM policy association with the fourth PCF.
  • S1117 includes S11171-S11174, which may correspond to S2171-S2174 in FIG. 3, respectively.
  • the fourth AMF sends the second association request information to the fourth PCF, and the second association request information carries fourth AMF identification information for identifying the fourth AMF.
  • S1118 may correspond to S218 in FIG. 2.
  • the third AMF sends the third deletion request information to the third PCF, which may correspond to S1030 in FIG. 13. To avoid redundant description, reference may be made to the description of S1030 in FIG. 13.
  • the third PCF deletes the AM policy control information for the terminal device stored in the third PCF, which may correspond to S1040 in FIG. 13. To avoid redundant description, reference may be made to the description of S1040 in FIG. 13.
  • the third AMF deletes the AM policy control information for the terminal device stored in the third AMF, which may correspond to S1050 in FIG. 13. To avoid redundant description, reference may be made to the description of S1050 in FIG. 13.
  • S1120-S1121 may correspond to S220-S221 in FIG. 2 respectively. To avoid redundant description, reference may be made to the description of S220-S221 in FIG. 2.
  • FIG. 15 shows an apparatus 1200 for terminating access and mobility management policy association according to an embodiment of the present application.
  • the apparatus 1200 includes:
  • a sending unit 1210 configured to send the first PCF identification information of the first policy control function PCF to the second AMF;
  • the sending unit 1210 is further configured to send first deletion request information to the first PCF, where the first deletion request information is used to request the first PCF to delete the target between the first PCF and the device.
  • AM policy association of the terminal device, the first PCF and the second PCF are different;
  • a processing unit 1220 where the processing unit is configured to delete AM policy control information for the terminal device
  • the second AMF is an AMF that currently serves the terminal device
  • the device is an AMF that serves the terminal device before the second AMF serves the terminal device
  • the second PCF is a current service office
  • the first PCF is a PCF that serves the terminal device before the second PCF serves the terminal device.
  • the apparatus further includes a receiving unit 1230; and,
  • the sending unit 1210 is specifically configured to:
  • the receiving unit 1230 does not receive the second deletion request information sent by the first PCF within a preset time period
  • the first deletion request information is sent to the second AMF, where the first The second deletion request information is used to request the apparatus to delete AM policy control information for the terminal device between the first PCF and the apparatus.
  • the apparatus further includes a receiving unit 1230; and,
  • the processing unit 1220 is further configured to:
  • the receiving unit 1230 After the receiving unit 1230 receives the deregistration information sent by the unified data management UDM, start a timer, and the duration of the timer is the preset duration; or,
  • a timer is started, and a duration of the timer is the preset duration.
  • the apparatus further includes a receiving unit 1230, where the receiving unit 1230 is configured to:
  • the apparatus for terminating access and mobility management policy association when the second PCF selected by the second AMF is different from the first PCF, the apparatus sends an application to the first PCF. Instructing the first PCF to delete the first deletion request information associated with the AM policy can cause the first PCF to delete the corresponding AM policy control information, which effectively saves system resources.
  • the apparatus 1200 for terminating access and mobility management policy association may correspond to (for example, may be configured on or itself) the first AMF described in the above method 300, and the apparatus for terminating access and mobility management
  • Each module or unit in the policy-related device 1200 is respectively configured to perform each action or process performed by the first AMF in the foregoing method 300.
  • detailed descriptions thereof are omitted.
  • the device 1200 may be a first AMF.
  • the device 1200 may include a processor, a transmitter, and a receiver, and the processor, the transmitter, and the receiver are communicatively connected, and optionally
  • the device further includes a memory, and the memory is communicatively connected with the processor.
  • the processor, the memory, the transmitter, and the receiver may be communicatively connected.
  • the memory may be used to store instructions.
  • the processor is configured to execute the instructions stored in the memory to control the transmitter to send information or the receiver to receive signals.
  • the sending unit 1210 in the device 1200 shown in FIG. 15 may correspond to a transmitter, and the processing unit 1220 in the device 1200 shown in FIG. 15 may also correspond to a processor.
  • the transmitter and the receiver may be implemented by the same component transceiver.
  • the device 1200 may be a chip (or a chip system) installed in a terminal device.
  • the device 1200 may include a processor and an input / output interface.
  • the interface is communicatively connected with the transceiver of the network device.
  • the device further includes a memory, and the memory is communicatively connected with the processor.
  • the processor, the memory, and the transceiver may be communicatively connected.
  • the memory may be used to store instructions.
  • the processor is configured to execute the instructions stored in the memory to control the transceiver to send information or signals.
  • the sending unit in the device 1200 shown in FIG. 15 may correspond to an output interface
  • the processing unit in the device 1200 shown in FIG. 15 may correspond to a processor
  • FIG. 16 shows an apparatus 1300 for terminating access and mobility management policy association according to an embodiment of the present application.
  • the apparatus 1300 includes:
  • a receiving unit 1310 is configured to receive first deletion request information sent by a first access and mobility management function AMF, where the first deletion request information is used to request the device to delete between the device and the first AMF For the AM policy association of the terminal device, the device is different from the second PCF;
  • a processing unit 1320 configured to delete AM policy control information for the terminal device
  • the first AMF is an AMF serving the terminal device before the second AMF serves the terminal device
  • the second AMF is an AMF currently serving the terminal device
  • the device is in the second The PCF serves the terminal device before serving the terminal device
  • the second PCF is the PCF currently serving the terminal device.
  • the device for terminating access and mobility management policy association in the case where the second PCF selected by the second AMF is different from the device, the first AMF sends a message to the device for Instructing the device to delete the first deletion request information associated with the AM policy can cause the device to delete the corresponding AM policy control information, which effectively saves system resources.
  • the apparatus 1300 for terminating access and mobility management policy association may correspond to (for example, may be configured on or itself) the first PCF described in the above method 300, and the apparatus for terminating access and mobility management
  • Each module or unit in the policy-related device 1300 is configured to perform each action or process performed by the first PCF in the foregoing method 300.
  • detailed descriptions thereof are omitted.
  • the device 1300 may be a first PCF.
  • the device 1300 may include a processor, a transmitter, and a receiver, and the processor, the transmitter, and the receiver are communicatively connected, and optionally
  • the device further includes a memory, and the memory is communicatively connected with the processor.
  • the processor, the memory, the transmitter, and the receiver may be communicatively connected.
  • the memory may be used to store instructions.
  • the processor is configured to execute the instructions stored in the memory to control the transmitter to send information or the receiver to receive signals.
  • the receiving unit 1310 in the device 1300 shown in FIG. 16 may correspond to a receiver, and the processing unit 1320 in the device 1300 shown in FIG. 16 may also correspond to a processor.
  • the transmitter and the receiver may be implemented by the same component transceiver.
  • the device 1300 may be a chip (or a chip system) installed in a terminal device.
  • the device 1300 may include a processor and an input / output interface.
  • the interface is communicatively connected with the transceiver of the network device.
  • the device further includes a memory, and the memory is communicatively connected with the processor.
  • the processor, the memory, and the transceiver may be communicatively connected.
  • the memory may be used to store instructions.
  • the processor is configured to execute the instructions stored in the memory to control the transceiver to send information or signals.
  • the receiving unit in the device 1300 shown in FIG. 16 may correspond to an input interface
  • the processing unit in the device 1300 shown in FIG. 6 may correspond to a processor
  • FIG. 17 shows an apparatus 1400 for terminating access and mobility management policy association according to an embodiment of the present application.
  • the apparatus 1400 includes:
  • the sending unit 1410 is configured to send the second PCF identification information of the second policy control function PCF to the first AMF; or,
  • the sending unit 1410 is further configured to send first instruction information to the first AMF, where the first instruction information is used to indicate that the second PCF is different from the first PCF;
  • the second AMF is an AMF currently serving a terminal device
  • the first AMF is an AMF serving the terminal device before the second AMF serves the terminal device
  • the second PCF is a current service office
  • the first PCF is a PCF that serves the terminal device before the second PCF serves the terminal device.
  • the apparatus can determine the second PCF and the second PCF by sending the second PCE identification information or the first indication information to the first AMF. Whether the first PCF is the same. In this case, if the second PCF and the first PCF are different, the first AMF may send an instruction to the first PCF to instruct the first PCF to delete an AM policy association, so that the The first PCF deletes the corresponding AM policy control information, which effectively saves system resources.
  • the apparatus 1400 for terminating access and mobility management policy association may correspond to (for example, may be configured on or itself) the second PCF described in the above method 300, and the apparatus for terminating access and mobility management
  • Each module or unit in the policy-related device 1400 is respectively configured to perform each action or process performed by the second PCF in the method 300 described above.
  • detailed descriptions thereof are omitted.
  • the device 1400 may be a second AMF.
  • the device 1400 may include a processor, a transmitter, and a receiver, and the processor, the transmitter, and the receiver are communicatively connected, and optionally
  • the device further includes a memory, and the memory is communicatively connected with the processor.
  • the processor, the memory, the transmitter, and the receiver may be communicatively connected.
  • the memory may be used to store instructions.
  • the processor is configured to execute the instructions stored in the memory to control the transmitter to send information or the receiver to receive signals.
  • the transmitting unit 1410 in the device 1400 shown in FIG. 17 may correspond to the transmitter.
  • the device 1400 may be a chip (or a chip system) installed in a terminal device.
  • the device 1400 may include a processor and an input-output interface.
  • the interface is communicatively connected with the transceiver of the network device.
  • the device further includes a memory, and the memory is communicatively connected with the processor.
  • the processor, the memory, and the transceiver may be communicatively connected.
  • the memory may be used to store instructions.
  • the processor is configured to execute the instructions stored in the memory to control the transceiver to send information or signals.
  • the transmitting unit in the device 1400 shown in FIG. 17 may correspond to the output interface.
  • FIG. 18 illustrates an apparatus 1500 for terminating access and mobility management policy association according to an embodiment of the present application.
  • the apparatus 1500 includes:
  • a receiving unit 1510 is configured to receive association request information sent by the second access and mobility management function AMF, where the association request information is used to request establishment of an AM policy association with a terminal device of the device, and the association request information Further including second instruction information for determining whether the first PCF is the same as the device;
  • a sending unit 1520 is configured to send second deletion request information to the first AMF according to the second instruction information, and the second deletion request information is used to request the first AMF to delete the first PCF and the first AM policy control information for the terminal device between an AMF;
  • a processing unit 1530 configured to save AM policy control information for the terminal device
  • the second AMF is an AMF that currently serves the terminal device
  • the first AMF is an AMF that serves the terminal device before the second AMF serves the terminal device
  • the device is a current service office
  • the first PCF is a PCF that serves the terminal device before the device serves the terminal device.
  • the sending unit 1520 is specifically configured to:
  • the second deletion request information is sent to the first AMF.
  • the second indication information includes first PCF identification information of the first PCF.
  • the processing unit 1530 is further configured to:
  • the first PCF identification information According to the first PCF identification information and the device, it is determined that the first PCF is the same as the device.
  • the apparatus for terminating the access and mobility management policy provided in the embodiment of the present application, the apparatus that has established an AM policy association with the second AMF receives the second AMF to determine that the apparatus has been associated with the first AMF.
  • the second indication information for establishing whether the first PCF associated with the AM policy is the same as the device, wherein the first AMF is an AMF serving the terminal device before the second AMF serves the terminal device, and the device is based on the second Sending the deletion request information to the instruction information can cause the second AMF to delete the AM policy control information of the terminal device, and also saves system resources.
  • the apparatus 1500 for terminating access and mobility management policy association may correspond to (for example, may be configured on or itself) the second PCF described in the above method 700, and the apparatus for terminating access and mobility management
  • Each module or unit in the policy-related device 1500 is used to perform each action or process performed by the second PCF in the above method 700. To avoid redundant description, detailed descriptions are omitted here.
  • the device 1500 may be a first PCF.
  • the device 1500 may include a processor, a transmitter, and a receiver, and the processor, the transmitter, and the receiver are communicatively connected, and optionally
  • the device further includes a memory, and the memory is communicatively connected with the processor.
  • the processor, the memory, the transmitter, and the receiver may be communicatively connected.
  • the memory may be used to store instructions.
  • the processor is configured to execute the instructions stored in the memory to control the transmitter to send information or the receiver to receive signals.
  • the receiving unit 1510 in the device 1500 shown in FIG. 18 may correspond to the receiver, and the sending unit 1520 in the device 1500 shown in FIG. 18 may correspond to the transmitter.
  • the processing unit 1530 may correspond to a processor.
  • the transmitter and the receiver may be implemented by the same component transceiver.
  • the device 1500 may be a chip (or a chip system) installed in a terminal device.
  • the device 1500 may include a processor and an input / output interface.
  • the interface is communicatively connected with the transceiver of the network device.
  • the device further includes a memory, and the memory is communicatively connected with the processor.
  • the processor, the memory, and the transceiver may be communicatively connected.
  • the memory may be used to store instructions.
  • the processor is configured to execute the instructions stored in the memory to control the transceiver to send information or signals.
  • the receiving unit in the device 1500 shown in FIG. 18 may correspond to the input interface
  • the sending unit in the device 1500 shown in FIG. 18 may correspond to the output interface
  • the processing unit in the device 1200 shown in FIG. 18 may Corresponds to the processor.
  • FIG. 19 shows an apparatus 1600 for terminating access and mobility management policy association according to an embodiment of the present application.
  • the apparatus 1600 includes:
  • a receiving unit 1610 is configured to receive second deletion request information sent by a second policy control function PCF, where the second deletion request information is used to request the apparatus to delete an AM policy for a terminal device between the first PCF and the apparatus Control information, the first PCF is the same as the second PCF;
  • a processing unit 1620 configured to delete AM policy control information for the terminal device
  • the device is an AMF serving the terminal device before the second AMF serves the terminal device
  • the second AMF is an AMF currently serving the terminal device
  • the second PCF is currently serving the terminal The PCF of the device.
  • the first PCF is a PCF that serves the terminal device before the second PCF serves the terminal device.
  • the apparatus for terminating access and mobility management policy association provided in the embodiment of the present application deletes the apparatus that has established AM policy association with the first PCF, and deletes the apparatus according to the second deletion request information sent by the second AMF.
  • the AM policy control information of the terminal device saves system resources.
  • the apparatus 1600 for terminating access and mobility management policy association may correspond to (for example, may be configured on or itself) the first AMF described in the above method 700, and the apparatus for terminating access and mobility management
  • Each module or unit in the policy-related device 1600 is respectively configured to perform each action or processing performed by the first AMF in the foregoing method 700.
  • detailed descriptions thereof are omitted.
  • the device 1600 may be a first AMF.
  • the device 1600 may include a processor, a transmitter, and a receiver, and the processor, the transmitter, and the receiver are communicatively connected, and optionally
  • the device further includes a memory, and the memory is communicatively connected with the processor.
  • the processor, the memory, the transmitter, and the receiver may be communicatively connected.
  • the memory may be used to store instructions.
  • the processor is configured to execute the instructions stored in the memory to control the transmitter to send information or the receiver to receive signals.
  • the receiving unit 1610 in the device 1600 shown in FIG. 19 may correspond to a receiver, and the processing unit 1620 in the device 1600 shown in FIG. 19 may also correspond to a processor.
  • the transmitter and the receiver may be implemented by the same component transceiver.
  • the device 1600 may be a chip (or a chip system) installed in a terminal device.
  • the device 1600 may include a processor and an input / output interface.
  • the interface is communicatively connected with the transceiver of the network device.
  • the device further includes a memory, and the memory is communicatively connected with the processor.
  • the processor, the memory, and the transceiver may be communicatively connected.
  • the memory may be used to store instructions.
  • the processor is configured to execute the instructions stored in the memory to control the transceiver to send information or signals.
  • the receiving unit in the device 1600 shown in FIG. 19 may correspond to an input interface
  • the processing unit in the device 1600 shown in FIG. 19 may correspond to a processor
  • FIG. 20 shows an apparatus 1700 for terminating access and mobility management policy association according to an embodiment of the present application.
  • the apparatus 1700 includes:
  • a receiving unit 1710 is configured to receive first association request information sent by a third access and mobility function AMF and used to request establishment of an association with an AM policy for a terminal device of the third PCF, the first association request information Further including third AMF identification information for identifying the third AMF;
  • the receiving unit 1710 is further configured to receive second association request information sent by a fourth access and mobility management function AMF, where the second association request information is used to request establishment of the third PCF for the terminal.
  • AM policy association of the device the second association request information further includes fourth AMF identification information for identifying the fourth AMF;
  • the receiving unit 1710 is further configured to receive third deletion request information sent by the third AMF, where the third deletion request information is used to request the third PCF to delete the third PCF and the third AMF. Association between AM policies for the terminal device, the third deletion request information further includes the third AMF identification information;
  • a processing unit 1720 is configured to save AM policy control information for the terminal device according to the fourth AMF identification information and the third deletion request information.
  • each of the devices associated with the termination of access and mobility management policies provided in the embodiments of the present application needs to establish an AM policy association (for example, a third AMF or a fourth AMF) with the PCF (for example, a third PCF) in
  • the process of establishing an AM policy association connection sends its own identity to the third PCF, and sends a deletion request message carrying its own identity after a preset period of time.
  • the third PCF receives the latest AMF's
  • the identifier for example, the identifier of the fourth AMF
  • the identifier of the AMF is compared with the identifier of the AMF (for example, the identifier of the third AMF) carried in the received deletion request information. If the two AMFs are different, the third PCF saves The AM policy control information, only the third AMF deletes the AM policy control information, which not only reuses the AM policy control information in the PCF, but also saves system resources.
  • the apparatus 1700 for terminating access and mobility management policy association may correspond to (for example, may be configured on or itself) the third PCF described in the above method 800, and the apparatus for terminating access and mobility management
  • Each module or unit in the policy-related device 1700 is respectively configured to perform each action or processing performed by the third PC in the foregoing method 800.
  • detailed descriptions thereof are omitted.
  • the device 1700 may be a third PC.
  • the device 1700 may include a processor, a transmitter, and a receiver, and the processor, the transmitter, and the receiver are communicatively connected.
  • the device further includes a memory, and the memory is communicatively connected with the processor.
  • the processor, the memory, the transmitter, and the receiver may be communicatively connected.
  • the memory may be used to store instructions.
  • the processor is configured to execute the instructions stored in the memory to control the transmitter to send information or the receiver to receive signals.
  • the receiving unit 1710 in the device 1700 shown in FIG. 20 may correspond to the receiver, and the processing unit 1720 in the device 1700 shown in FIG. 20 may also correspond to the processor.
  • the transmitter and the receiver may be implemented by the same component transceiver.
  • the device 1700 may be a chip (or a chip system) installed in a terminal device.
  • the device 1700 may include a processor and an input / output interface.
  • the interface is communicatively connected with the transceiver of the network device.
  • the device further includes a memory, and the memory is communicatively connected with the processor.
  • the processor, the memory, and the transceiver may be communicatively connected.
  • the memory may be used to store instructions.
  • the processor is configured to execute the instructions stored in the memory to control the transceiver to send information or signals.
  • the receiving unit in the device 1700 shown in FIG. 20 may correspond to an input interface
  • the processing unit in the device 1700 shown in FIG. 20 may correspond to a processor
  • FIG. 21 shows an apparatus 1800 for terminating access and mobility management policy association according to an embodiment of the present application.
  • the apparatus 1800 includes:
  • a receiving unit 1810 is configured to receive first association request information sent by a third access and mobility management function AMF, where the first association request information is used to request establishment of an AM policy association with the third PCF for a terminal device
  • the first association request information further includes third AMF identification information for identifying the third AMF;
  • the receiving unit 1810 is further configured to receive third deletion request information sent by the third AMF, where the third deletion request information is used to request the third PCF to delete the third PCF and the third AMF.
  • the AM policy control information for the terminal device, and the third deletion request information further includes the third AMF identification information;
  • a processing unit 1820 is configured to delete the AM policy control information for the terminal device according to the third AMF identification information and the third deletion request information.
  • each of the devices for terminating access and mobility management policy association needs to establish AM policy association with the PCF (for example, the third AMF or the fourth AMF).
  • the PCF for example, a third PCF
  • the third PCF receives the nearest identity of the AMF (for example, when establishing an AM policy association) ,
  • the identifier of the third AMF is compared with the identifier of the AMF carried in the received deletion request information (for example, the identifier of the third AMF), and when the two AMFs are the same, the third PCF deletes the AM policy control information , AMF also deletes AM policy control information, saving system resources.
  • the apparatus 1800 for terminating access and mobility management policy association may correspond to (for example, may be configured on or itself) the third PCF described in the above method 900, and the apparatus for terminating access and mobility management
  • Each module or unit in the policy-related device 1800 is respectively configured to perform each action or processing performed by the third PCF in the foregoing method 900.
  • detailed descriptions thereof are omitted.
  • the device 1800 may be a third PC.
  • the device 1800 may include a processor, a transmitter, and a receiver, and the processor, the transmitter, and the receiver are communicatively connected.
  • the device further includes a memory, and the memory is communicatively connected with the processor.
  • the processor, the memory, the transmitter, and the receiver may be communicatively connected, and the memory may be used to store instructions, and the processor is configured to execute the instructions stored in the memory to control the sender to send information or the receiver to receive signals.
  • the receiving unit 1810 in the device 1800 shown in FIG. 21 may correspond to a receiver, and the processing unit 1820 in the device 1800 shown in FIG. 20 may also correspond to a processor.
  • the transmitter and the receiver may be implemented by the same component transceiver.
  • the device 1800 may be a chip (or a chip system) installed in a terminal device.
  • the device 1800 may include a processor and an input / output interface.
  • the interface is communicatively connected with the transceiver of the network device.
  • the device further includes a memory, and the memory is communicatively connected with the processor.
  • the processor, the memory, and the transceiver may be communicatively connected.
  • the memory may be used to store instructions.
  • the processor is configured to execute the instructions stored in the memory to control the transceiver to send information or signals.
  • the receiving unit in the device 1800 shown in FIG. 21 may correspond to an input interface
  • the processing unit in the device 1800 shown in FIG. 21 may correspond to a processor
  • FIG. 22 illustrates an apparatus 1900 for terminating access and mobility management policy association according to an embodiment of the present application.
  • the apparatus 1900 includes:
  • a sending unit 1910 is configured to send, to the third policy control function PCF, first association request information used to request establishment of an AM policy association with the AM device for the terminal device, and the first association request information further includes an identifier for identifying The third AMF identification information of the third AMF;
  • the sending unit 1910 is further configured to send third deletion request information to the third PCF after a preset time period, where the third deletion request information requests the third PCF to delete the third PCF and the third PCF.
  • AM policy control information for the terminal device between AMFs, and the third deletion request information further includes the third AMF identification information;
  • the processing unit 1920 is configured to delete AM policy control information for the terminal device.
  • each AMF for example, the third AMF
  • sends its own identity to the PCF for example, the third PCF
  • sending the deletion request information carrying its own identifier after a preset time period can cause the third PCF to pass the nearest AMF identifier (for example, the third AMF or other AMF) received when establishing the AM policy association and
  • the identifier of the AMF (for example, the identifier of the third AMF) carried in the received deletion request information is compared.
  • the third PCF stores the AM policy control information, and only the third AMF is deleted.
  • AM policy control information or, if the two AMFs are the same, the third PCF deletes the AM policy control information, and the third AMF also deletes the AM policy control information, saving system resources.
  • the apparatus further includes a receiving unit 1930, and the processing unit 1920 is further configured to:
  • the receiving unit 1930 After the receiving unit 1930 receives the de-registration information sent by the unified data management UDM, a timer is started, and the duration of the timer is the preset duration.
  • the apparatus 1900 for terminating access and mobility management policy association may correspond to (for example, may be configured on or itself) the third AMF described in the above method 800 or 900, and the apparatus for terminating access and mobility
  • Each module or unit in the device 1900 associated with the sexual management strategy is respectively configured to perform each action or processing performed by the third AMF in the above method 800 or 900.
  • detailed description is omitted.
  • the device 1900 may be a third AMF.
  • the device 1900 may include a processor, a transmitter, and a receiver, and the processor, the transmitter, and the receiver are communicatively connected, and optionally
  • the device further includes a memory, and the memory is communicatively connected with the processor.
  • the processor, the memory, the transmitter, and the receiver may be communicatively connected.
  • the memory may be used to store instructions.
  • the processor is configured to execute the instructions stored in the memory to control the transmitter to send information or the receiver to receive signals.
  • the sending unit 1910 in the device 1900 shown in FIG. 22 may correspond to a transmitter, and the processing unit 1920 in the device 1900 shown in FIG. 22 may also correspond to a processor.
  • the transmitter and the receiver may be implemented by the same component transceiver.
  • the device 1900 may be a chip (or a chip system) installed in a terminal device.
  • the device 1900 may include a processor and an input-output interface, and the processor may pass the input-output
  • the interface is communicatively connected with the transceiver of the network device.
  • the device further includes a memory, and the memory is communicatively connected with the processor.
  • the processor, the memory, and the transceiver may be communicatively connected.
  • the memory may be used to store instructions.
  • the processor is configured to execute the instructions stored in the memory to control the transceiver to send information or signals.
  • the sending unit in the device 1900 shown in FIG. 22 may correspond to an output interface
  • the processing unit in the device 1900 shown in FIG. 22 may correspond to a processor
  • the processor may be an integrated circuit chip with signal processing capabilities.
  • each step of the foregoing method embodiment may be completed by using an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the above processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA), or other Programming logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • Various methods, steps, and logical block diagrams disclosed in the embodiments of the present application may be implemented or executed.
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly implemented by a hardware decoding processor, or may be performed by using a combination of hardware and software modules in the decoding processor.
  • a software module may be located in a mature storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), and an electronic memory. Erase programmable read-only memory (EPROM, EEPROM) or flash memory.
  • the volatile memory may be Random Access Memory (RAM), which is used as an external cache.
  • RAM Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • Synchronous Dynamic Random Access Memory Synchronous Dynamic Random Access Memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double SDRAM, DDR SDRAM enhanced synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM synchronous connection dynamic random access memory
  • Synchronous DRAM Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM Enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory Synchrobus RAM, SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each of the units may exist separately physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional 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 a part that contributes to the existing technology or a part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application.
  • the foregoing storage media include: U disks, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks or compact discs and other media that can store program codes .

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Abstract

本申请提供了一种用于终止接入和移动性管理策略关联的方法，该方法包括：第一AMF向第二AMF发送第一PCF的第一PCF标识信息以及向该第一PCF发送第一删除请求信息，该第一删除请求信息用于请求该第一PCF删除该第一PCF和该第一AMF之间针对终端设备的AM策略关联，该第一PCF与第二PCF相异；该第一AMF和该第一PCF都删除针对该终端设备的AM策略控制信息。因此，可以节省系统资源。

Description

一种用于终止接入和移动性管理策略关联的方法和装置
本申请要求于2018年5月21日提交中国专利局、申请号为201810491046.6、申请名称为“一种用于终止接入和移动性管理策略关联的方法和装置”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
本申请涉及通信领域，更具体地，涉及通信领域中一种用于终止接入和移动性管理策略关联的方法和装置。
背景技术
在第五代(the fifth generation，5G)移动通信系统中，当终端设备接入5G网络时，终端设备会向接入和移动性管理功能AMF发起注册流程，接着，AMF选择执行策略控制功能PCF，并与选择的PCF建立接入和移动性管理AM策略关联，实现AMF与PCF之间的数据传输。
在一种场景中，当终端设备由于移动等原因，使得为该终端设备提供服务的AMF改变，例如，为该终端设备提供服务的AMF由第一AMF变为第二AMF。在该第二AMF有可能重用与该第一AMF建立AM策略关联的第一PCF的情况下，该第一AMF可以将该第一PCF的标识发送给该第二AMF，以使得该第二AMF在选择PCF的时候可以重复使用第一PCF，这样，不需要删除存储在该第一PCF中针对该终端设备的AM策略控制信息。
但是，在上述场景中，若该第二AMF选择的PCF不是该第一PCF，该第一PCF与该第一AMF之间的AM策略关联无法删除，该第一PCF和该第一AMF中存储的针对该终端设备的AMF策略控制信息也就无法删除，浪费了系统资源。
因此，需要提供一种技术，能够节省系统资源。
发明内容
本申请提供一种用于终止接入和移动性管理策略关联的方法和装置，可以节省系统资源。
第一方面，提供了一种用于终止接入和移动性管理策略关联的方法，所述方法包括：
第一接入移动性管理功能AMF向第二AMF发送第一策略控制功能PCF的第一PCF标识信息；
所述第一AMF向所述第一PCF发送第一删除请求信息，所述第一删除请求信息用于请求所述第一PCF删除所述第一PCF和所述第一AMF之间针对终端设备的AM策略关联，所述第一PCF与第二PCF相异；
所述第一AMF删除针对所述终端设备的AM策略控制信息；
其中，所述第二AMF是当前服务所述终端设备的AMF，所述第一AMF是在所述第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二PCF是当前服务所述终端设备的PCF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF。
因此，本申请实施例提供的用于终止接入和移动性管理策略关联的方法，在第二AMF选择的第二PCF和第一PCF相异的情况下，第一AMF通过向第一PCF发送用于指示该第一PCF删除AM策略关联的第一删除请求信息，可以使得该第一PCF删除对应的AM策略控制信息，有效地节省了系统资源。
在一种可能的实现方式中，所述第一AMF向所述第一PCF发送第一删除请求信息，包括：
在所述第一AMF在预设时长内未接收到所述第一PCF发送的第二删除请求信息的情况下，所述第一AMF向所述第二AMF发送所述第一删除请求信息，其中，所述第二删除请求信息用于请求所述第一AMF删除所述第一PCF和所述第一AMF之间针对所述终端设备的AM策略控制信息。
在一种可能的实现方式中，所述方法还包括：
在所述第一AMF接收到统一数据管理UDM发送的去注册信息之后，所述第一AMF开启定时器，所述定时器的时长为所述预设时长。
由于UDM向第一AMF发送去注册消息的时间与第二AMF选择PCF的时间较近，因此，在该第一AMF接收到去注册消息后开启定时器，可以节省时间。
在一种可能的实现方式中，所述方法还包括：
在所述第一AMF向所述第二AMF发送所述第一PCF标识信息后，所述第一AMF开启定时器，所述定时器的时长为所述预设时长。
在一种可能的实现方式中，在所述第一AMF向所述第一PCF发送第一删除请求信息之前，所述方法还包括：
所述第一AMF接收所述第二AMF发送的所述第二PCF的第二PCF标识信息；或，
所述第一AMF接收所述第二AMF发送的第一指示信息，所述第一指示信息用于指示所述第一PCF与所述第二PCF相异。
第二方面，提供了一种用于终止接入和移动性管理策略关联的方法，所述方法包括：
第一策略控制功能PCF接收第一接入和移动性管理功能AMF发送的第一删除请求信息，所述第一删除请求信息用于请求所述第一PCF删除所述第一PCF和所述第一AMF之间针对终端设备的AM策略关联，所述第一PCF与第二PCF相异；
所述第一PCF删除针对所述终端设备的AM策略控制信息；
其中，所述第一AMF是在第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二AMF是当前服务所述终端设备的AMF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF，所述第二PCF是当前服务所述终端设备的PCF。
因此，本申请实施例提供的用于终止接入和移动性管理策略关联的方法，在第二AMF选择的第二PCF和第一PCF相异的情况下，第一AMF通过向第一PCF发送用于指示该第一PCF删除AM策略关联的第一删除请求信息，可以使得该第一PCF删除对应的AM 策略控制信息，有效地节省了系统资源。
第三方面，提供了一种用于终止接入和移动性管理策略关联的方法，所述方法包括：
第二接入和移动性管理功能AMF向第一AMF发送第二策略控制功能PCF的第二PCF标识信息；或，
第二AMF向第一AMF发送第一指示信息，所述第一指示信息用于指示所述第二PCF与第一PCF相异；
其中，所述第二AMF是当前服务终端设备的AMF，所述第一AMF是在所述第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二PCF是当前服务所述终端设备的PCF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF。
因此，本申请实施例提供的用于终止接入和移动性管理策略关联的方法，第二AMF通过向第一AMF发送第二PCE标识信息或第一指示信息，可以第一AMF确定第二PCF与第一PCF是否相同，这样，在该第二PCF和该第一PCF相异的情况下，该第一AMF可以通过向该第一PCF发送用于指示该第一PCF删除AM策略关联，使得该第一PCF删除对应的AM策略控制信息，有效地节省了系统资源。
第四方面，提供了一种用于终止接入和移动性管理策略关联的方法，所述方法包括：
第二策略控制功能PCF接收第二接入和移动性管理功能AMF发送的关联请求信息，所述关联请求信息用于请求建立与所述第二PCF的针对终端设备的AM策略关联，所述关联请求信息还包括用于确定所述第二PCF与第一PCF是否相同的第二指示信息；
所述第二PCF根据所述第二指示信息，向第一AMF发送第二删除请求信息，所述第二删除请求信息用于请求所述第一AMF删除所述第一PCF和所述第一AMF之间针对所述终端设备的AM策略控制信息；
所述第一PCF保存针对所述终端设备的AM策略控制信息；
其中，所述第二AMF是当前服务所述终端设备的AMF，所述第一AMF是在所述第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二PCF是当前服务所述终端设备的PCF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF。
因此，本申请实施例提供的用于终止接入和移动性管理策略关联的方法，与第二AMF已经建立AM策略关联的第二PCF，通过接收该第二AMF发送的用于确定与第一AMF已经建立AM策略关联的第一PCF与该第二PCF是否相同的第二指示信息，其中，该第一AMF是在该第二AMF服务终端设备之前服务该终端设备的AMF，并且，该第二PCF根据该第二指示信息发送删除请求信息，可以使得该第二AMF删除该终端设备的AM策略控制信息，也节省了系统资源。
在一种可能的实现方式中，所述第二PCF根据所述第二指示信息，向第一AMF发送第二删除请求信息，包括：
在所述第一PCF与所述第二PCF相同的情况下，所述第二PCF向所述第一AMF发送所述第二删除请求信息。
在一种可能的实现方式中，所述第二指示信息包括所述第一PCF的第一PCF标识信息；以及，
所述方法还包括：
所述第二PCF根据所述第一PCF标识信息和所述第二PCF，确定所述第一PCF与所述第二PCF相同。
因此，本申请实施例提供的用于终止接入和移动性管理策略关联的方法，第二PCF通过接收该第二AMF发送的第一PCF的标识(即，第一PCF标识信息)，可以根据该第一PCF的标识和该第二PCF的标识确定两个PCF是否相同，从而，在该第一PCF与该第二PCF相同的情况下，发送删除请求信息，使得第一AMF删除该终端设备的AM策略控制信息，也节省了系统资源。
第五方面，提供了一种用于终止接入和移动性管理策略关联的方法，所述方法包括：
第一接入和移动性管理功能AMF接收第二策略控制功能PCF发送的第二删除请求信息，所述第二删除请求信息用于请求所述第一AMF删除第一PCF和所述第一AMF之间针对终端设备的AM策略控制信息，所述第一PCF与所述第二PCF相同；
所述第一AMF删除针对所述终端设备的AM策略控制信息；
其中，所述第一AMF是在第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二AMF是当前服务所述终端设备的AMF，所述第二PCF是当前服务所述终端设备的PCF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF。
因此，本申请实施例提供的用于终止接入和移动性管理策略关联的方法，与第一PCF已经建立AM策略关联的第一AMF根据接收到的第二AMF发送的第二删除请求信息，删除该终端设备的AM策略控制信息，节省了系统资源。
第六方面，提供了一种用于终止接入和移动性管理策略关联的方法，所述方法包括：
第三策略控制功能PCF接收第三接入和移动性功能AMF发送的用于请求建立与所述第三PCF的针对终端设备的AM策略关联的第一关联请求信息，所述第一关联请求信息还包括用于标识所述第三AMF的第三AMF标识信息；
第三策略控制功能PCF接收第四接入和移动性管理功能AMF发送的第二关联请求信息，所述第二关联请求信息用于请求建立与所述第三PCF的针对所述终端设备的AM策略关联，所述第二关联请求信息还包括用于标识所述第四AMF的第四AMF标识信息；
所述第三PCF接收所述第三AMF发送的第三删除请求信息，所述第三删除请求信息于请求所述第三PCF删除所述第三PCF和所述第三AMF之间针对所述终端设备的AM策略关联，所述第三删除请求信息还包括所述第三AMF标识信息；
所述第三PCF根据所述第四AMF标识信息和所述第三删除请求信息，保存针对所述终端设备的AM策略控制信息。
因此，本申请实施例提供的终止接入和移动性管理策略关联的方法，每个需要与PCF(例如，第三PCF)建立AM策略关联的AMF(例如，第三AMF或第四AMF)在建立AM策略关联连接过程向该第三PCF发送自己的标识，并且，在预设时长后发送携带自己的标识的删除请求信息，该第三PCF通过在建立AM策略关联时接收到最近的AMF的标识(例如，第四AMF的标识)和接收到的删除请求信息中携带的AMF的标识(例如，第三AMF的标识)进行比较，在两个AMF相异的情况下，该第三PCF保存AM策略控制信息，仅第三AMF删除AM策略控制信息，不仅重用了PCF中的AM策略控制信息， 也节省了系统资源。
第七方面，提供了一种终止接入和移动性管理策略关联的方法，所述方法包括：
第三策略控制功能PCF接收第三接入和移动性管理功能AMF发送的第一关联请求信息，所述第一关联请求信息用于请求建立与所述第三PCF的针对终端设备的AM策略关联，所述第一关联请求信息还包括用于标识所述第三AMF的第三AMF标识信息；
所述第三PCF接收所述第三AMF发送的第三删除请求信息，所述第三删除请求信息于请求所述第三PCF删除所述第三PCF和所述第三AMF之间针对所述终端设备的AM策略控制信息，所述第三删除请求信息还包括所述第三AMF标识信息；
所述第三PCF根据所述第三AMF标识信息和所述第三删除请求信息，删除针对所述终端设备的AM策略控制信息。
因此，本申请实施例提供的终止接入和移动性管理策略关联的方法，每个需要与PCF建立AM策略关联的AMF(例如，第三AMF或第四AMF)在建立AM策略关联连接过程向PCF(例如，第三PCF)发送自己的标识，并且，在预设时长后发送携带自己的标识的删除请求信息，该第三PCF通过在建立AM策略关联时接收到最近的AMF的标识(例如，第三AMF的标识)和接收到的删除请求信息中携带的AMF的标识(例如，第三AMF的标识)进行比较，在两个AMF相同的情况下，该第三PCF删除AM策略控制信息，AMF也删除AM策略控制信息，节省了系统资源。
第八方面，提供了一种用于终止接入和移动性管理策略关联的方法，所述方法包括：
第三接入和移动性管理功能AMF向第三策略控制功能PCF发送用于请求建立与所述AMF的针对终端设备的AM策略关联的第一关联请求信息，所述第一关联请求信息还包括用于标识所述第三AMF的第三AMF标识信息；
所述第三AMF在预设时长后，向所述第三PCF发送第三删除请求信息，所述第三删除请求信息于请求所述第三PCF删除所述第三PCF和所述第三AMF之间针对所述终端设备的AM策略控制信息，所述第三删除请求信息还包括所述第三AMF标识信息；
所述第三AMF删除针对所述终端设备的AM策略控制信息。
因此，本申请实施例提供的终止接入和移动性管理策略关联的方法，每个AMF(例如，第三AMF)在建立AM策略关联连接过程向PCF(例如，第三PCF)发送自己的标识，并且，在预设时长后发送携带自己的标识的删除请求信息，可以使得该第三PCF通过在建立AM策略关联时接收到的最近的AMF的标识(例如，第三AMF或其他AMF)和接收到的删除请求信息中携带的AMF的标识(例如，第三AMF的标识)进行比较，在两个AMF相异的情况下，该第三PCF保存AM策略控制信息，仅该第三AMF删除AM策略控制信息，或者，在两个AMF相同的情况下，该第三PCF删除AM策略控制信息，该第三AMF也删除AM策略控制信息，节省了系统资源。
在一种可能的实现方式中，所述方法还包括：
在所述第三AMF接收到统一数据管理UDM发送的去注册信息之后，所述第三AMF开启定时器，所述定时器的时长为所述预设时长。
由于UDM向第一AMF发送去注册消息的时间与第二AMF选择PCF的时间较近，因此，在该第一AMF接收到去注册消息后开启定时器，可以节省时间。
第九方面，提供了一种用于终止接入和移动性管理策略关联的装置，所述装置可以用 来执行上述第一方面至第八方面中任一方面及任一方面的任意可能的实现方式中的操作。例如，所述装置可以包括用于执行上述第一方面至第八方面中任一方面或任一方面的任意可能的实现方式中的各个操作的模块单元。
第十方面，提供了一种用于终止接入和移动性管理策略关联的装置，所述装置包括：处理器、收发器和存储器。其中，处理器、收发器和存储器之间通过内部连接通路互相通信。存储器用于存储指令，处理器用于执行所述存储器存储的指令。当处理器执行存储器存储的指令时，上述执行使得装置执行上述第一方面至第八方面中任一方面或任一方面的任意可能的实现方式中的任一方法。
第十一方面，提供了一种芯片系统，包括存储器和处理器，存储器用于存储计算机程序，处理器用于从存储器中调用并运行计算机程序，使得安装有芯片系统的通信设备执行上述第一方面至第八方面及其可能的实施方式中的任一方法。
第十二方面，提供了一种计算机程序产品，计算机程序产品包括：计算机程序代码，当计算机程序代码被通信设备(例如，AMF或PCF)的通信单元、处理单元或收发器、处理器运行时，使得通信设备执行上述第一方面至第八方面及其可能的实施方式中的任一方法。
第十三方面，提供了一种计算机可读存储介质，计算机可读存储介质存储有程序，程序使得通信设备(例如，AMF或PCF)执行上述第一方面至第八方面及其可能的实施方式中的任一方法。
第十四方面，提供了一种计算机程序，计算机程序在某一计算机上执行时，将会使计算机实现上述第一方面至第八方面及其可能的实施方式中的任一方法。
附图说明
图1是应用于本申请实施例的一种可能的网络架构的示意图。
图2是本申请实施例提供的注册流程的示意性流程图。
图3是本申请实施例提供的AMF与PCF建立AM策略关联的示意性流程图。
图4是本申请实施例提供的AMF与PCF删除AMF策略关联的示意性流程图。
图5是本申请实施例提供的用于终止接入和移动性管理策略关联的方法的交互性示意图。
图6是本申请另一实施例提供的用于终止接入和移动性管理策略关联的方法的交互性示意图。
图7至图9是本申请另一实施例提供的注册流程的示意性流程图。
图10是本申请另一实施例提供的用于终止接入和移动性管理策略关联的方法的交互性示意图。
图11是本申请另一实施例提供的用于终止接入和移动性管理策略关联的方法的交互性示意图。
图12是本申请另一实施例提供的注册流程的示意性流程图。
图13是本申请再一实施例提供的用于终止接入和移动性管理策略关联的方法的交互性示意图。
图14是本申请再一实施例提供的注册流程的示意性流程图。
图15至图22是本申请实施例提供的用于终止接入和移动性管理策略关联的装置。
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。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access，WiMAX)通信系统、未来的第五代(5th Generation，5G)系统或新无线(New Radio，NR)等。
本申请实施例中的终端设备可以指用户设备、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端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、个人数字处理(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，未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(Public Land Mobile Network，PLMN)中的终端设备等，本申请实施例对此并不限定。
本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备可以是全球移动通讯(Global System of Mobile communication，GSM)系统或码分多址(Code Division Multiple Access，CDMA)中的基站(Base Transceiver Station，BTS)，也可以是宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(Evolutional NodeB，eNB或eNodeB)，还可以是云无线接入网络(Cloud Radio Access Network，CRAN)场景下的无线控制器，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等，本申请实施例并不限定。
图1是应用于本申请实施例的一种可能的网络架构。如图1所示，该网络架构是从服务化接口的角度描述的网络架构，该网络架构中涉及的各个网元分别进行说明。
1、(无线)接入网络(RadioAccess Network，(R)AN)：用于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。(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用户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；
2、用户平面功能(User Plane Function，UPF)：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。
3、数据网络(Data Network，DN)：用于提供传输数据的网络，例如，Internet网络等。
4、认证服务功能(Authentication Server Function，AUSF)：主要用于用户鉴权等。
5、接入和移动管理功能(Access and mobility Management Function，AMF)：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。
6、会话管理功能(Session Management Function，SMF)：主要用于会话管理、终端设备的网络互连协议(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。
7、网络开放功能(Network Exposure Function，NEF)：用于安全地向外部开放由3GPP网络功能提供的业务和能力等。
8、网络存储功能(Network Repository Function，NRF)：用于保存网络功能实体以及其提供服务的描述信息，以及支持服务发现，网元实体发现等。
9、策略控制功能(Policy Control Function，PCF)：用于指导网络行为的统一策略框架，为控制平面功能网元(例如AMF，SMF网元等)提供策略规则信息等。
10、统一数据管理(Unified Data Management，UDM)：用于处理用户标识，接入鉴权，注册以及移动性管理等。
11、应用功能(Application Function，AF)：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。
12、终端设备：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。
在该网络架构中，N2接口为(R)AN120和AMF160的参考点，用于非接入层(Non-access stratum，NAS)消息的发送等；N3接口为(R)AN120和UPF130之间的参考点，用于传输用户面的数据等；N4接口为SMF170和UPF130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UPF130和DN140之间的参考点，用于传输用户面的数据等。
应理解，上述应用于本申请实施例的网络架构仅是举例说明的从服务化架构的角度描述的网络架构，适用本申请实施例的网络架构并不局限于此，任何能够实现上述各个网元的功能的网络架构都适用于本申请实施例。
例如，在某些网络架构中，AMF 160、SMF 170、PCF 1110以及UDM 1120等网络功能实体都称为网络功能(Network Function，NF)；或者，在另一些网络架构中，AMF160，SMF 170，PCF1110，UDM1120等网络功能实体的集合都可以称为控制面功能(Control Plane Function，CPF)。
为了方便描述，以上述网络架构为例，结合图2，对本申请实施例涉及的终端设备接入网络后的注册流程做一简单介绍。
S201，终端设备向(R)AN发送注册请求；
S202，(R)AN为该终端设备选择合适的能够服务该终端设备的AMF。
S203，(R)AN向第二AMF发送注册请求。
S204，第二AMF向第一AMF发送用于请求第一AMF中存储的终端设备的上下文的信息。
这里，该终端设备由于移动等原因，使得为该终端设备提供服务的AMF由原来的第一AMF变为当前为该终端设备服务的第二AMF，由于第一AMF中已经存储了关于该终端设备的上下文，因此，第二AMF可以向第一AMF请求该终端设备的上下文。
其中，终端设备的上下文可以理解为：终端设备或各个网络功能实体之间相互联系的与该U终端设备相关的参数，例如，参数可以是是接口参数的集合。
S205，第一AMF将该终端设备的上下文反馈给第二AMF。
其中，该终端设备的上下文还可以包括与第一AMF之间建立AMF策略关联的PCF(为了便于区分与理解，记为第一PCF)的标识信息。
S206，若该第二AMF没有从该终端设备或该第一AMF处获取订阅永久标识(Subscription Permanent Identifier，SUPI)，则该第二AMF向终端设备发送用于请求订阅加密标识(Subscription Concealed Identifier，SUCI)的请求信息。
S207，该终端设备向该第二AMF发送用于指示SUCI的响应信息。
S208，第二AMF选择AUSF。
S209，AUSF对该终端设备进行鉴权。
S210，第二AMF将用于指示第二AMF已经接收到该终端设备的上下文的信息发送给第一AMF。
S211，若该第二AMF没有从该终端设备或该第一AMF处获取永久设备标识(Permanent Equipment Identifier，PEI)，则该第二AMF向该终端设备发送用于请求PEI的信息。
S212，该第二AMF发起移动设备(Mobile Equipment，ME)标识鉴定。
S213，第二AMF选择UDM。
S214，第二AMF在选择后的UDM中进行注册并获取签约信息。
S215，UDM通知第一AMF删除该终端设备的上下文。
S216，第二AMF选择能够为该终端设备提供服务的PCF(例如，第二PCF)。
这里，AMF选择PCF需要考虑终端设备所在的地理位置。
具体而言，在非漫游场景下，即，终端设备位于家乡或归属公共陆地移动网络(Home Public Land Mobile Network，H-PLMN)网络，AMF只需要选择一个位于H-PLMN中的H-PCF。在漫游场景下，即,终端设备位于拜访或者访问PLMN(V-PLMN)网络，AMF需要选择两个PCF，一个PCF是位于V-PLMN中的V-PCF，另一个PCF是位于H-PLMN中的H-PCF。
需要说明的是，第二AMF选择的第二PCF有可能是之前与第一AMF建立AM策略关联的第一PCF，也有可能是与第一PCF相异的PCF。
S217，第二AMF和第二PCF建立AM策略关联。
图3所示为AMF与PCF建立AMF策略关联的流程示意图。如图3所示，
S2171，第二AMF确定要建立与第二PCF之间的AM策略关联；
S2172，第二AMF向第二PCF发送用于请求建立与第二PCF之间的AM策略关联的关联请求信息；
S2173，第二PCF向第二AMF发送AM策略；
这里，AM策略包括：接入和移动性相关策略信息(Access and mobility related policy  information)和UE接入选择和分组数据单元会话选择相关策略信息(UE access selection and Packet Data Unit(PDU)Session selection related policy information)，其中，UE接入选择和PDU选择相关策略信息包括接入网发现和选择策略(Access Network Discovery&Selection Policy，ANDSP)和UE路由选择策略(UE Route Selection Policy，URSP)。
S2174，第二AMF部署AM策略，或，第二AMF部署AM策略和终端设备的上下文。其中，该第二AMF会存储将AM策略中的接入和移动性相关策略信息，将UE接入选择和PDU会话选择相关策略信息发送给该终端设备。
如上所述，AMF基于该终端设备所处的地理位置选择的PCF的类型不同，那么，AMF和PCF可以基于PCF的类型建立AMF与PCF之间针对该终端设备的策略关联。其中，第二PCF可以是第二V-PCF和第二H-PCF中的至少一个。
若该终端设备处于非漫游场景，由于第二AMF仅需要选择一个位于H-PLMN中的H-PCF，因此，第二AMF仅需要建立第二AMF与第二H-PCF之间的AM策略关联。
若该终端设备处于漫游场景，由于AMF需要选择一个位于H-PLMN中的H-PCF和一个位于V-PLMN中的V-PCF，则，在一种可能的实现方式中：在S2172中，第二AMF该关联请求信息发送给第二V-PCF，第二V-PCF将该关联请求信息发送给第二H-PCF；在S2173中，第二H-PCF将第二H-PCF中针对该终端设备的AM策略发送给第二V-PCF，第二V-PCF可以将第二V-PCF中针对该终端设备的AM策略和第二H-PCF中针对该终端设备的AM策略做相关处理，将处理后的针对该终端设备的AM策略发送给AMF，进而，AMF部署AM策略。
需要说明的是，若第二AMF选择的第二PCF是之前与第一AMF关联的第一PCF，即第一PCF被重用，则第二AMF可以仅部署AM策略；若第二AMF选择的第二PCF与第一PCF相异，即，第一PCF未被重用，则第二AMF需要部署AM策略和该终端设备的上下文。
S218，第二AMF向SMF发送会话管理上下文更新请求，以激活协议数据单元(Protocol Data Unit，PDU)会话。
S219，若在S205中，若第一AMF未将与第一AMF关联的第一PCF的标识发送给第二AMF，则第一AMF向与第一PCF发送用于请求删除AM策略关联的删除请求信息，使得第一PCF删除存储在第一PCF中针对该终端设备的策略信息。
具体而言，图4所示为AMF与PCF删除AM策略关联的流程示意图。如图4所示，
S2191，第一AMF确定终止或删除AM策略关联；
S2192，第一AMF向第一PCF发送用于请求删除针对该终端设备的AM策略关联的删除请求信息，该删除请求信息中包括该终端设备的标识；
S2193，第一PCF删除存储在第一PCF中针对该终端设备的AM策略控制信息，并且，向第一AMF发送响应信息，以告知第一AMF已经完成针对AM策略的删除操作；
其中，第一PCF中存储的针对该终端设备的AM策略控制信息至少包括：该终端设备的标识，AM策略以及对应的AM策略的标识。
S2194，第一AMF删除存储在第一AMF中针对该终端设备的AM策略控制信息。
其中，第一AMF中存储的该终端设备的AM策略控制信息至少包括：第一PCF的标识和AM策略。可选地，第一AMF还可以删除第一AMF检测到的AM策略关联所请求 的事件的订阅。
应理解，第一PCF可以是第一V-PCF或第一H-PCF中的任意一个。
在漫游场景下，若仅第一H-PCF被重用，第一V-PCF未被重用，则第一AMF向第一V-PCF发送删除请求信息，使得第一V-PCF删除该终端设备的AM策略控制信息，第一H-PCF不需要删除该终端设备的AM策略控制信息，此种情况下，第一PCF为V-PCF；若H-PCF和V-PCF都未被重用，则该第一AMF向第一V-PCF发送该删除请求信息，并且，通过第一V-PCF将该删除请求信息发送给第一H-PCF，使得第一H-PCF和第一V-PCF都删除该终端设备的AM策略控制信息，此种情况下，第一PCF为第一V-PCF或第一H-PCF中的任意一个。在非漫游场景下，第一PCF仅为第一H-PCF。
需要说明的是，若第一AMF的删除请求信息可以是请求第一H-PCF删除该终端设备的AM策略关联，第一AMF向第一H-PCF发送删除请求信息可以解释为为第一AMF通过第一V-PCF向第一H-PCF发送该删除请求信息。
S220，第二AMF向该终端设备发送用于指示该终端设备的注册请求已经被接受的信息。
S221，该终端设备向第二AMF发送用于指示注册已经完成的信息。
从上述注册流程以及背景技术的描述可以看出，若第一AMF将第一PCF的标识发送给第二AMF，但是，实际上第二AMF选择的PCF并不是与第一AMF建立AM策略关联的第一PCF，而是与第一PCF相异的第二PCF，这种情况下，第一AMF与第一PCF之间的AM策略关联无法删除，浪费了系统资源。
因此，本申请实施例提供了一种用于终止接入和移动性管理策略关联的方法，有助于解决上述问题。
以下，结合图5至图14，详细描述本申请实施例。
在本申请实施例中，第二AMF是当前服务该终端设备的AMF，第二PCF是当前服务该终端设备的PCF，第二PCF与第二AMF之间建立了AM策略关联；第一AMF是在第二AMF服务该终端设备之前服务该终端设备的AMF，第一PCF是在该第二PCF服务该终端设备之前服务该终端设备的PCF，第一PCF与第一AMF之间建立了AM策略关联。
也就是说，第一AMF、第二AMF、第一PCF和第二PCF都是服务该终端设备的网元，由于终端设备的移动等原因，使得服务该终端设备的AMF由第一AMF变为第二AMF，对应地，服务该终端设备的PCF由第一PCF变为第二PCF。
此外，第一AMF可以对应图2中的第一AMF，第二AMF对应图2中的第二AMF，第一PCF可以对应图2中的第一PCF，第二PCF对应图2中的第二PCF。
图5所示为本申请实施例提供的用于终止接入和移动性管理策略关联的方法300的交互性示意图。下面，结合图5和图2，对方法300中的每个步骤进行详细说明。
在S310中，第一AMF向第二AMF发送第一PCF的第一PCF标识信息；
具体而言，S310可以对应图2中的S205，第一PCF标识信息可以承载于该终端设备的上下文中，由之前为该终端设备服务的第一AMF向当前为该终端设备服务的第二AMF发送第一PCF标识信息，以使得第二AMF在选择PCF时可以选择第一PCF，以便于重用第一PCF。
在S320中，第一AMF向第一PCF发送第一删除请求信息，第一删除请求信息用于 请求第一PCF删除第一PCF和第一AMF之间针对终端设备的AM策略关联，第一PCF与第二PCF相异。
具体而言，第一AMF在确定第二AMF未选择第一PCF(即，第一PCF与第二PCF相异)的情况下，第一AMF会向第一PCF发送第一删除请求信息，指示第一PCF删除第一PCF与第一AMF之间针对该终端设备的AM策略关联，或者说，指示第一PCF终止第一PCF与第一AMF之间针对该终端设备的AM策略关联。
因而，在S330中，第一PCF删除针对该终端设备的AM策略控制信息；在S340中，第一AMF删除针对该终端设备的AM策略控制信息。
也就是说，第一PCF在接收到第一AMF发送的第一删除请求信息后，删除存储在第一PCF中针对该终端设备的AM策略控制信息。其中，第一PCF中存储的针对该终端设备的AM策略控制信息至少包括：该终端设备的标识，AM策略以及对应的AM策略的标识。
第一AMF在发送第一删除请求信息后，也会删除存储在第一AMF中的AM策略控制信息。其中，第一AMF中的AM策略控制信息至少包括：第一PCF的标识和AM策略。可选地，第一AMF还可以删除第一AMF检测到的AM策略关联所请求的事件的订阅。
在一种可能的实现方式中，第一删除请求信息包括该终端设备的标识。
下面，对终端设备处于漫游场景和非漫游场景下，关于第一PCF做进一步描述。
若终端设备处在非漫游场景下，第一PCF是第一H-PCF。
若终端设备处在漫游场景下，第一PCF可以是第一H-PCF或第一V-PCF中的任意一个。当第一AMF认为第二AMF都可以重用第一H-PCF和第一V-PCF时，可以向第二AMF发送第一H-PCF的标识和第一V-PCF的标识，第一AMF最终向未被重用的PCF(V-PCF或H-PCF中的至少一个)发送第一删除请求。
若第一V-PCF未被重用，则第一AMF向第一V-PCF发送第一删除请求信息，此种情况下，第一PCF为第一V-PCF；但是，第一AMF可以向第二AMF发送第一H-PCF的标识和第一V-PCF的标识，或者，第一AMF可以仅向第二AMF发送第一V-PCF的标识，本申请实施例并不限于此。
若第一V-PCF和第一H-PCF都未被重用，则第一AMF向第一V-PCF发送第一删除请求信息，并且，通过第一V-PCF将第一删除请求信息发送给第一H-PCF，使得第一H-PCF和第一V-PCF都删除该终端设备的AM策略控制信息，此种情况下，第一PCF为第一V-PCF或第一H-PCF中的任意一个。第一AMF可以向第二AMF发送第一H-PCF的标识和第一V-PCF的标识。最终，由于由于第一H-PCF和第一V-PCF都未被重用，第一AMF向第一V-PCF发送删除请求信息，对于第一H-PCF来说，第一AMF通过第一V-PCF向第一H-PCF发送该第一删除请求信息。
因此，本申请实施例提供的用于终止接入和移动性管理策略关联的方法，在第二AMF选择的第二PCF和第一PCF相异的情况下，第一AMF通过向第一PCF发送用于指示该第一PCF删除AM策略关联的第一删除请求信息，可以使得该第一PCF删除对应的AM策略控制信息，有效地节省了系统资源。
在S320中，第一AMF1可以通过以下两种方式(即，方式1和方式2)确定第一PCF 和第二PCF是否相同，下面，分别对方式1和方式2进行说明。
方式1
在第一AMF在预设时长内未接收到第一PCF发送的第二删除请求信息的情况下，第一AMF向第二AMF发送第一删除请求信息，其中，第二删除请求信息用于请求第一AMF删除第一PCF和第一AMF之间针对该终端设备的AM策略控制信息。
在本申请实施例中，为了节省系统资源，不仅可以通过第一AMF向第一PCF发送删除请求信息(例如，第一删除请求信息)，也可以通过第一PCF向第一AMF发送删除请求信息(例如，第二删除请求信息)。不同之处在于：第一AMF是在第一PCF与第二PCF相异的情况下，向第一PCF发送第一删除请求信息，使得第一PCF删除第一PCF中针对该终端设备的AM策略控制信息；第一PCF是在第一PCF与第二PCF相同的情况下，向第一AMF发送第二删除请求信息，目的是仅让第一AMF删除第一AMF中针对该终端设备的AM策略控制信息，但是，由于第一PCF被重用了，所以，第一PCF会保存第一PCF中针对该终端设备的AM策略控制信息。
因此，若第一AMF在预设时长内未接收到第一PCF发送的删除请求信息，则表示第一PCF与第二PCF相异，第一AMF可以向第一PCF发送第一删除请求信息。
此外，由于需要确认第一PCF与第二PCF是否相同，需要第二AMF完成选择PCF的过程，因此，该预设时长大于或等于第二AMF选择PCF占用的时长。
具体实现过程中，第一AMF可以在任意可能的时间通过开启定时器来设置预设时长，下面，作为举例示意性说明，通过方式1A和方式1B描述第一AMF开启定时器的时间。
方式1A
在第一AMF接收到统一数据管理UDM发送的去注册信息之后，第一AMF开启定时器，该定时器的时长为该预设时长。
参考图2，第一AMF接收UDM发送的去注册消息的步骤可以对应图2中的S215。
由于UDM向第一AMF发送去注册消息的时间与第二AMF选择PCF的时间较近，因此，在第一AMF接收到去注册消息后开启定时器，可以节省时间。
方式1B
在第一AMF向第二AMF发送第一PCF标识信息后，第一AMF开启定时器，该定时器的时长为该预设时长。
继续参考图2，第一AMF向第二AMF发送第一PCF标识信息的步骤可以对应在图2中的S205。
作为示例而非限定，第一AMF在确定自己不再服务该终端设备之后，都可以开启定＝定时器设置预设时长，只是不同时间开始的定时器对应的预设时长不相同而已。例如，第一AMF也可以在接收到第二AMF发送用于请求该终端设备的上下文的消息后，开启定时器，开启的定时器对应的预设时长大于方式1A和方式1B中定时器对应的预设时长。
方式2
在第一AMF向第一PCF发送第一删除请求信息之前，第一AMF可以通过接收第二AMF发送的信息来确定第一PCF和第二PCF是否相同。
下面，作为举例示意性说明，通过方式2A和方式2B描述第一AMF接收到的信息。
方式2A
第一AMF接收第二AMF发送的第二PCF的第二PCF标识信息。
如图6所示，在S310之后，在S311中，第一AMF接收第二AMF发送的第二PCF标识信息。也就是说，第二AMF只要完成选择PCF的过程，可以将选择好的PCF(例如，第二PCF)的标识发送给第一AMF，使得第一AMF可以通过接收到的第二PCF的标识和第一AMF已经确知的第一PCF的标识进行比较，若第一PCF的标识与第二PCF的标识相异，则表示第一PCF没有被重用，就可以向第一PCF发送第一删除请求信息。
方式2B
第一AMF接收第二AMF发送的第一指示信息，第一指示信息用于标识第一PCF与第二PCF相异。
继续如图6所示，在S310之后，在S311中，第一AMF接收第二AMF发送的第一指示信息。
同理，第二AMF只要完成选择PCF的过程，就能确知与第二AMF建立AM策略关联的PCF，第二AMF将从第一AMF发送的该终端设备的上下文中携带的第一PCF的标识和第二PCF的标识进行比较，将比较结果(例如，第一指示信息)发送给第一AMF，或者，只有在第一PCF与第二PCF相异的情况下，才发送第一指示信息，使得第一AMF在接收到第一指示信息后，就能确定第一PCF与第二PCF是否相同，在第一PCF与第二PCF相异的情况下，则表示第一PCF没有被重用，就可以向第一PCF发送第一删除请求信息。
以上，结合图5和图6，对本申请实施例进行了详细描述；下面，结合图7至图9，通过注册过程的具体流程对本申请实施例进行详细说明。
图7所示为本申请实施例的注册过程的另一流程示意图。下面，分别对每个步骤做一说明。
S401-S404可以分别对应图2中的S201-S204，为了避免赘述，可以参考图2中针对S201-S204的描述；
S405，第一AMF向第二AMF发送该的终端设备的上下文。该终端设备的上下文包括第一PCF标识信息。
S4051，第一AMF开启定时器。
S406-S414可以分别对应图2中的S206-S214，为了避免赘述，可以参考图2中针对S206-S214的描述。
S415，UDM向第一AMF发送去注册信息。
S4151，第一AMF开启定时器。
需要说明的是，S4051和S4151是二选一的步骤，即，第一AMF要么执行S4051，要么执行S4151。
S416-S418可以分别对应图2中的S216-S218，为了避免赘述，可以参考图2中针对S216-S218的描述。
S4191-S4193可以分别对应图5中的S320-S340，为了避免赘述，可以参考图5中针对S320-S340的描述。
S420-S421可以分别对应图2中的S220-S221，为了避免赘述，可以参考图2中针对S220-S221的描述。
图8所示为本申请实施例的注册过程的另一流程示意图。下面，分别对每个步骤做一说明。
S501-S517可以分别对应图2中的S201-S217，为了避免赘述，可以参考图2中针对S201-S217的描述。
S5171，第二AMF在选择第二PCF后，向第一AMP发送第二PCF标识信息或第一指示信息。
S518可以对应图2中的S218，为了避免赘述，可以参考图2中针对S218的描述。
S5191-S5193可以分别对应图5中的S320-S340，为了避免赘述，可以参考图5中针对S320-S340的描述。
S520-S521可以分别对应图2中的S220-S221，为了避免赘述，可以参考图2中针对S220-S221的描述。
图9所示为本申请实施例的注册过程的再一流程示意图。下面，分别对每个步骤做一说明。
S601-S612可以分别对应图2中的S201-S212，为了避免赘述，可以参考图2中针对S201-S212的描述。
S613可以对应图2中的S216，S614可以对应图2中的S217，S615可以对应图2中的S213，为了避免赘述，可以参考图2中针对S216、S217和S213的描述。
S6161，第二AMF向UDM发送注册信息，该注册信息中包括第二PCF标识信息或第一指示信息。
S6162，第二AMF向UDM发送用于请求恢复AM订阅数据以及SMF选择订阅数据和该终端设备的上下文的请求信息，该请求信息中包括第二PCF标识信息或第一指示信息。
S617，UDM向第一AMF发送用于指示第一AMF删除该终端设备的上下文的信息，该信息中包括UDM从S6161或S6162获取到的第二PCF标识信息或第一指示信息。
S618可以对应图2中的S218，为了避免赘述，可以参考图2中针对S218的描述。
S6191-S6193可以分别对应图5中的S320-S340，为了避免赘述，可以参考图5中针对S320-S340的描述。
S620-S621可以分别对应图2中的S220-S221，为了避免赘述，可以参考图2中针对S220-S221的描述。
以上，结合图5至图9，描述了本申请实施例的用于终止接入和移动性管理策略关联的方法，下面，结合图10，描述本申请另一实施例的用于终止接入和移动性管理策略关联的方法。
同理，下文中针对第一AMF、第二AMF、第一PCF和第二PCF的解释同方法200中对第一AMF、第二AMF、第一PCF和第二PCF的解释，为了简洁，此处不再赘述。
图10所示为本申请另一实施例提供的用于终止接入和移动性管理策略关联的方法700的交互性示意图。下面，对方法700中的每个步骤进行详细说明。
在S701中，第一AMF向第二AMF发送用于标识第一PCF的第一PCF标识信息。
这里，S710可以对应图2中的S205，具体描述可以参考S205的描述。
在S710中，第二AMF向第二PCF发送关联请求信息，该关联请求信息用于请求建 立与第二PCF的针对终端设备的AM策略关联，该关联请求信息还包括用于确定该第二PCF与第一PCF是否相同的第二指示信息。
也就是说，第二AMF在和选择好的第二PCF建立AM策略关联过程中，可以将从第一AMF中接收到的该第二指示信息通过该关联请求信息发送给第二PCF。
该第二指示信息可以直接用于指示该第一PCF与该第二PCF是否相同，例如，“1”表示相同，“0”表示相异。这种情况下，该第二AMF可以通过在S701中获取的第一PCF的标识和该第二AMF选择的第二PCF的标识进行比较，确定该第一PCF与该第二PCF是否相同，从而将生成的该第二指示信息发送给该第二PCF，以使得该第二PCF确定自己是否被重用；或者，
该第二指示信息可以包括该第一PCF的第一PCF标识信息。这种情况下，该第二AMF可以将在S701中接收到的该第一PCF标识信息作为该第二指示信息发送给该第二PCF，使得该第二PCF可以将该第一PCF的标识与该第二PCF的标识进行比较，从而确定该第一PCF与该第二PCF是否相同。
在S720中，第二PCF根据该第二指示信息，向第一AMF发送第二删除请求信息，其中，第二删除请求信息用于请求第一AMF删除第一PCF和第一AMF之间针对该终端设备的AM策略控制信息。
即，该第二PCF根据该第二指示信息确定该第一PCF与该第二PCF是否相同，从而确定是否向该第一AMF发送删除请求信息。
下面，分别对发送第二删除请求信息和不发送第二删除请求信息做一说明。
在S720中，在第一PCF与第二PCF相同的情况下，第二PCF向第一AMF发送第二删除请求信息；此外，
在S730中，第二PCF保存针对该终端设备的AM策略控制信息；
在S740中，第一AMF删除针对该终端设备的AM策略控制信息。
也就是说，若该第二PCF根据该第二指示信息确定该第一PCF与该第二PCF相同，则表示第一PCF被重用，第二PCF即为第一PCF，这种情况下，第一PCF(或，第二PCF)向第一AMF发送第二删除请求信息，但是，第一PCF保存存储在第一PCF中针对该终端设备的AM策略控制信息，以便于重用该终端设备的AM策略控制信息；第一AMF在接收到第二删除请求信息后，确知自己不再与第一PCF之间存在AM策略关联，因此，删除存储在第一AMF中的AM策略控制信息。
下面，对终端设备处于漫游场景下，对第一PCF的相关步骤做进一步描述。
在漫游场景下，第一PCF是第一V-PCF或第一H-PCF中的任意一个。
若仅第一H-PCF被重用，第一V-PCF未被重用，则由第一H-PCF通过第一V-PCF发送删除请求信息，第一H-PCF保存该终端设备的AM策略控制信息，第一PCF为第一H-PCF。
若第一H-PCF和第一V-PCF都被重用，则只需要第一V-PCF发送删除请求信息，第一PCF为第一V-PCF。
若仅第一V-PCF被重用，第一H-PCF未被重用，第一V-PCF不仅向第一AMF发送第二删除请求信息，也需要向第一H-PCF发送删除请求信息，以使得第一H-PCF删除存储在第一H-PCF中该终端设备的AM策略控制信息。
在另一种情况下，若第一PCF与第二PCF相异下，第二PCF不向第一AMF发送第二删除请求信息。
也就是说，第二PCF并不是重用的PCF，可以不用向第一AMF发送第二删除请求信息。
因此，本申请实施例提供的用于终止接入和移动性管理策略关联的方法，与第二AMF已经建立AM策略关联的第二PCF，通过接收该第二AMF发送的用于确定与第一AMF已经建立AM策略关联的第一PCF与该第二PCF是否相同的第二指示信息，其中，该第一AMF是在该第二AMF服务终端设备之前服务该终端设备的AMF，并且，该第二PCF根据该第二指示信息发送删除请求信息，可以使得该第二AMF删除该终端设备的AM策略控制信息，也节省了系统资源。
本申请实施例还提供了一种用于终止接入和移动性管理策略关联的方法。下面，结合图11至图14，对本申请再一实施例提供的方法进行说明。
首先，为了便于理解，先简单介绍下方法800和1000的方案思路。
与PCF建立AM策略关联的AMF在建立连接过程中可以向PCF发送自己的标识，PCF存储AMF的标识；若后续有新的AMF需要与PCF建立AMF策略关联，则PCF会替换之前接收到的AMF的标识；并且，在AMF发送在预设时长后，可以向PCF发送包括自己的标识的删除请求信息。这样，PCF可以通过前后两次接收到的AMF的标识是否相同，进一步确定自己是否被重用：若PCF前后两次接收到的AMF的标识相同，则表示自己被重用，则保存存储在PCF中针对该终端设备的AM策略控制信息，若PCF前后两次接收到的AMF的标识相异，则表示自己未被重用，则删除存储在PCF中针对该终端设备的AM策略控制信息。
其中，方法800描述的是PCF被重用的情况的技术方案，方法1000描述的是PCF未被重用的情况的技术方案。
下面，分别对方法800和方法1000进行描述。
在方法800中，第四AMF是当前服务该终端设备的AMF，第三PCF是当前服务该终端设备的PCF，第三PCF与第四AMF之间建立了AM策略关联；第三AMF是在第四AMF服务该终端设备之前服务该终端设备的AMF，同时，在第三AMF服务该终端设备的过程中，第三PCF与第三AMF之间也建立了AM策略关联。
图11所示为本申请另一实施例提供的用于终止接入和移动性管理策略关联的方法800的交互性示意图。
S810，第三AMF向第三PCF发送用于请求建立与第三PCF的针对终端设备的AM策略关联的第一关联请求信息，第一关联请求信息还包括用于指示第三AMF的第三删除请求信息。
也就是说，在第三AMF和第三PCF建立AM策略关联过程中，在第一关联请求信息中携带第三AMF的标识。
S820，第四AMF向第三PCF发送用于请求建立与第三PCF的针对终端设备的AM策略关联的第二关联请求信息，第二关联请求信息还包括用于指示第四AMF的第四AMF标识信息。
当终端设备由于移动等原因，之前为该终端设备服务的AMF由第三AMF变为第四 AMF那么，第四AMF需要与第三PCF重新建立AM策略关联。同理，第三AMF在向第三PCF发送第二关联请求信息时携带第四AMF的标识。
需要说明的是，当第三PCF前后都是在与AMF建立策略关联过程中接收AMF的标识后来接收到的AMF的标识会替换之前接收到的AMF的标识，例如，第三PCF会将存储在第三PCF中的第三AMF的标识替换为第四AMF的标识。这样，可以保证第三PCF能用最近接收到的AMF的标识和在S830中接收到的AMF的标识进行比较。
S830，第三AMF在预设时长后，向第三PCF发送第三删除请求信息，第三删除请求信息用于请求第三PCF删除第三PCF和第三AMF之间针对该终端设备的AM策略关联，第三删除请求信息还包括第三AMF标识信息。
具体而言，第三AMF在该预设时长后向第三PCF发送第三删除请求信息，其中，该预设时长大于或等于第四AMF选择PCF的时长，可以使得第三PCF在得到最新的与第三PCF建立AM策略关联的AMF的标识(即，第四AMF的标识)后，有效地将最新存储的第四AMF的标识和第三删除请求信息中的第三AMF的标识进行比较。
在一种可能的实现方式中，在第三AMF接收到统一数据管理UDM发送的去注册信息之后，第三AMF开启定时器，该定时器的时长为该预设时长。
参考图2，第三AMF接收UDM发送的去注册消息的步骤可以对应图2中的S215。
由于UDM向第三AMF发送去注册消息的时间与第四AMF选择PCF的时间较近，因此，在第三AMF接收到去注册消息后开启定时器，可以节省时间。
作为示例而非限定，在第三AMF向第四AMF发送第三PCF标识信息后，第三AMF也可以开启定时器，该定时器的时长为该预设时长。
继续参考图2，第三AMF向第四AMF发送第三PCF标识信息的步骤可以对应在图2中的S205。
S840，第三PCF根据第四AMF标识信息和第三删除请求信息，不删除针对该终端设备的AM策略控制信息。
即，第三PCF将第四AMF和第三AMF进行比较，确定两个AMF相异，则表示第三PCF之前已经和为该终端设备服务的第三AMF建立了AM策略关联，现在也和同样为该终端设备服务的第四AMF建立了AM策略关联，那么，意味着第三PCF被重用了，因此，第三PCF不删除第三PCF中针对该终端设备的AM策略控制信息，将其保存。
S850，第三AMF删除针对该终端设备的AM策略控制信息。
因此，本申请实施例提供的终止接入和移动性管理策略关联的方法，每个需要与PCF(例如，第三PCF)建立AM策略关联的AMF(例如，第三AMF或第四AMF)在建立AM策略关联连接过程向该第三PCF发送自己的标识，并且，在预设时长后发送携带自己的标识的删除请求信息，该第三PCF通过在建立AM策略关联时接收到最近的AMF的标识(例如，第四AMF的标识)和接收到的删除请求信息中携带的AMF的标识(例如，第三AMF的标识)进行比较，在两个AMF相异的情况下，该第三PCF保存AM策略控制信息，仅第三AMF删除AM策略控制信息，不仅重用了PCF中的AM策略控制信息，也节省了系统资源。
下面，结合图12，通过注册过程的具体流程对PCF被重用的情况的实施例进行详细说明。
S9011，第三AMF在与第三PCF建立AM策略关联时向第三PCF发送第一关联请求信息，第一关联请求信息中携带第三AMF的第三AMF标识信息。
S901-S914可以分别对应图2中的S201-S214，为了避免赘述，可以参考图2中针对S201-S214的描述；
S915，UDM向第三AMF发送去注册信息。
S9151，第三AMF开启定时器。
S916，第四AMF选择PCF，可以对应图2所示的S216，为了避免赘述，可以参考图2中针对S216的描述。
S917，第四AMF与第三PCF建立AM策略关联，S917包括S9171-S9174，可以分别对应图3中S2171-S2174。其中，在S9171中，第四AMF向第三PCF发送第二关联请求信息，第二关联请求信息中携带用于标识第四AMF的第四AMF标识信息。
S918可以对应图2中的S218。
S9191，第三AMF向第三PCF发送第三删除请求信息，可以对应图11中的S830，为了避免赘述，可以参考图11中针对S830的描述。
S9192，第三PCF保存存储在第三PCF中针对该终端设备的AM策略控制信息，可以对应图11中的S840，为了避免赘述，可以参考图11中针对S840的描述。
S9193，第三AMF删除存储在第三AMF中针对该终端设备的AM策略控制信息，可以对应图11中的S850，为了避免赘述，可以参考图11中针对S850的描述。
S920-S921可以分别对应图2中的S220-S221，为了避免赘述，可以参考图2中针对S220-S221的描述。
以上，结合图11和图12，对PCF被重用的情况的技术方案做了详细描述，下面，结合图13和图14，对PCF未被重用的情况的技术方案做详细描述。
图13所示为本申请再一实施例提供的用于终止接入和移动性管理策略关联的方法1000的交互性示意图。
其中，在方法1000中，第四AMF是当前服务该终端设备的AMF，第四PCF是当前服务该终端设备的PCF，第四PCF与第四AMF之间建立了AM策略关联；第三AMF是在第四AMF服务该终端设备之前服务该终端设备的AMF，同时，在第三AMF服务该终端设备的过程中，第三PCF与第三AMF之间也建立了AM策略关联。第四PCF是与第三PCF相异的与第四AMF建立AM策略关联的PCF。
S1010，第三AMF向第三PCF发送用于请求建立与第三PCF的针对终端设备的AM策略关联的第一关联请求信息，第一关联请求信息还包括第三AMF的第三AMF标识信息。
也就是说，在第三AMF和第三PCF建立AM策略关联过程中，在第一关联请求信息中携带第三AMF的标识。
S1020，第四AMF向第四PCF发送用于请求建立与第三PCF的针对该终端设备的AM策略关联的第二关联请求信息，第二关联请求信息还包括第四AMF的第四AMF标识信息。
当终端设备由于移动等原因，之前为该终端设备服务的AMF由第三AMF变为第四AMF，那么，第四AMF需要与第四PCF重新建立AM策略关联。同理，第三AMF在向 第四PCF发送第二关联请求信息时携带第四AMF的标识。
S1030，第三AMF在预设时长后，向第三PCF发送第三删除请求信息，第三删除请求信息用于请求第三PCF删除第三PCF和第三AMF之间针对该终端设备的AM策略关联，第三删除请求信息还包括第三AMF标识信息。
具体而言，第三AMF在该预设时长后向第三PCF发送第三删除请求信息，其中，该预设时长大于或等于第四AMF选择PCF的时长，可以使得第三PCF在得到最新的与第三PCF建立AM策略关联的AMF的标识(即，第三AMF的标识)后，有效地将最新存储的第三AMF的标识和第三删除请求信息中的第三AMF的标识进行比较。
在一种可能的实现方式中，在第三AMF接收到统一数据管理UDM发送的去注册信息之后，第三AMF开启定时器，该定时器的时长为该预设时长。
参考图2，第三AMF接收UDM发送的去注册消息的步骤可以对应图2中的S215。
由于UDM向第三AMF发送去注册消息的时间与第四AMF选择PCF的时间较近，因此，在第三AMF接收到去注册消息后开启定时器，可以节省时间。
作为示例而非限定，在第三AMF向第四AMF发送第三PCF标识信息后，第三AMF也可以开启定时器，该定时器的时长为该预设时长。
继续参考图2，第三AMF向第四AMF发送第三PCF标识信息的步骤可以对应在图2中的S205。
S1040，第三PCF根据第三AMF标识信息和第三删除请求信息，删除针对该终端设备的AM策略控制信息。
即，第三PCF将从接收到的最近的关联请求信息(即，第一关联请求信息)中携带的AMF的标识和从第三删除请求信息中携带的AMF的标识进行比较，确定两个AMF相同，则表示PCF未被重用，第四AMF选择了其他PCF，因此，第三PCF删除第三PCF中针对该终端设备的AM策略控制信息。
S1050，第三AMF删除针对该终端设备的AM策略控制信息。
因此，本申请实施例提供的终止接入和移动性管理策略关联的方法，每个需要与PCF建立AM策略关联的AMF(例如，第三AMF或第四AMF)在建立AM策略关联连接过程向PCF(例如，第三PCF)发送自己的标识，并且，在预设时长后发送携带自己的标识的删除请求信息，该第三PCF通过在建立AM策略关联时接收到最近的AMF的标识(例如，第三AMF的标识)和接收到的删除请求信息中携带的AMF的标识(例如，第三AMF的标识)进行比较，在两个AMF相同的情况下，该第三PCF删除AM策略控制信息，AMF也删除AM策略控制信息，节省了系统资源。
下面，结合图14，通过注册过程的具体流程对PCF未被重用的情况的实施例进行详细说明。
S11011，第三AMF在与第三PCF建立AM策略关联时向第三PCF发送第一关联请求信息，第一关联请求信息中携带第三AMF的第三AMF标识信息。
S1101-S1114可以分别对应图2中的S201-S214，为了避免赘述，可以参考图2中针对S201-S214的描述；
S1115，UDM向第三AMF发送去注册信息。
S11151，第三AMF开启定时器。
S1116，第四AMF选择PCF，可以对应图2所示的S216，为了避免赘述，可以参考图2中针对S216的描述。
S1117，第四AMF与第四PCF建立AM策略关联，S1117包括S11171-S11174，可以分别对应图3中S2171-S2174。其中，在S11171中，第四AMF向第四PCF发送第二关联请求信息，第二关联请求信息中携带用于标识第四AMF的第四AMF标识信息。
S1118可以对应图2中的S218。
S11191，第三AMF向第三PCF发送第三删除请求信息，可以对应图13中的S1030，为了避免赘述，可以参考图13中针对S1030的描述。
S11192，第三PCF删除存储在第三PCF中针对该终端设备的AM策略控制信息，可以对应图13中的S1040，为了避免赘述，可以参考图13中针对S1040的描述。
S11193，第三AMF删除存储在第三AMF中针对该终端设备的AM策略控制信息，可以对应图13中的S1050，为了避免赘述，可以参考图13中针对S1050的描述。
S1120-S1121可以分别对应图2中的S220-S221，为了避免赘述，可以参考图2中针对S220-S221的描述。
以上，结合图1至图14详细描述了本申请实施例提供的用于终止接入和移动性管理策略关联的方法，下面，结合图15至图22描述根据本申请实施例的用于终止接入和移动性管理策略关联的装置，方法实施例所描述的技术特征同样适用于以下装置实施例。
图15所示为本申请实施例提供的用于终止接入和移动性管理策略关联的装置1200，该装置1200包括：
发送单元1210，用于向第二AMF发送第一策略控制功能PCF的第一PCF标识信息；
所述发送单元1210还用于，向所述第一PCF发送第一删除请求信息，所述第一删除请求信息用于请求所述第一PCF删除所述第一PCF和所述装置之间针对终端设备的AM策略关联，所述第一PCF与第二PCF相异；
处理单元1220，所述处理单元用于删除针对所述终端设备的AM策略控制信息；
其中，所述第二AMF是当前服务所述终端设备的AMF，所述装置是在所述第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二PCF是当前服务所述终端设备的PCF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF。
在一种可能的实现方式中，所述装置还包括接收单元1230；以及，
所述发送单元1210具体用于：
在所述接收单元1230在预设时长内未接收到所述第一PCF发送的第二删除请求信息的情况下，向所述第二AMF发送所述第一删除请求信息，其中，所述第二删除请求信息用于请求所述装置删除所述第一PCF和所述装置之间针对所述终端设备的AM策略控制信息。
在一种可能的实现方式中，所述装置还包括接收单元1230；以及，
所述处理单元1220还用于：
在所述接收单元1230接收到统一数据管理UDM发送的去注册信息之后，开启定时器，所述定时器的时长为所述预设时长；或，
在所述接收单元1230向所述第二AMF发送所述第一PCF标识信息后，开启定时器， 所述定时器的时长为所述预设时长。
在一种可能的实现方式中，所述装置还包括接收单元1230，所述接收单元1230用于：
接收所述第二AMF发送的所述第二PCF的第二PCF标识信息；或，
接收所述第二AMF发送的第一指示信息，所述第一指示信息用于指示所述第一PCF与所述第二PCF相异。
因此，本申请实施例提供的用于终止接入和移动性管理策略关联的装置，在第二AMF选择的第二PCF和第一PCF相异的情况下，该装置通过向第一PCF发送用于指示该第一PCF删除AM策略关联的第一删除请求信息，可以使得该第一PCF删除对应的AM策略控制信息，有效地节省了系统资源。
该用于终止接入和移动性管理策略关联的装置1200可以对应(例如，可以配置于或本身即为)上述方法300中描述的第一AMF，并且，该用于终止接入和移动性管理策略关联的装置1200中各模块或单元分别用于执行上述方法300中第一AMF所执行的各动作或处理过程，这里，为了避免赘述，省略其详细说明。
在本申请实施例中，该装置1200可以为第一AMF，此种情况下，该装置1200可以包括：处理器、发送器和接收器，处理器、发送器和接收器通信连接，可选地，该装置还包括存储器，存储器与处理器通信连接。可选地，处理器、存储器、发送器和接收器可以通信连接，该存储器可以用于存储指令，该处理器用于执行该存储器存储的指令，以控制发送器发送信息或接收器接收信号。
此种情况下，图15所示的装置1200中的发送单元1210可以对应该发送器，图15所示的装置1200中的处理单元1220也可以对应该处理器。另一种实施方式中，发送器和接收器可以由同一个部件收发器实现。
在本申请实施例中，该装置1200可以为安装在终端设备中的芯片(或者说，芯片系统)，此情况下，该装置1200可以包括：处理器和输入输出接口，处理器可以通过输入输出接口与网络设备的收发器通信连接，可选地，该装置还包括存储器，存储器与处理器通信连接。可选地，处理器、存储器和收发器可以通信连接，该存储器可以用于存储指令，该处理器用于执行该存储器存储的指令，以控制收发器发送信息或信号。
此情况下，图15所示的装置1200中的发送单元可以对应该输出接口，图15所示的装置1200中的处理单元可以对应该处理器。
图16所示为本申请实施例提供的用于终止接入和移动性管理策略关联的装置1300，该装置1300包括：
接收单元1310，用于接收第一接入和移动性管理功能AMF发送的第一删除请求信息，所述第一删除请求信息用于请求所述装置删除所述装置和所述第一AMF之间针对终端设备的AM策略关联，所述装置与第二PCF相异；
处理单元1320，用于删除针对所述终端设备的AM策略控制信息；
其中，所述第一AMF是在第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二AMF是当前服务所述终端设备的AMF，所述装置是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF，所述第二PCF是当前服务所述终端设备的PCF。
因此，本申请实施例提供的用于终止接入和移动性管理策略关联的装置，在第二AMF选择的第二PCF和该装置相异的情况下，第一AMF通过向该装置发送用于指示该装置删 除AM策略关联的第一删除请求信息，可以使得该装置删除对应的AM策略控制信息，有效地节省了系统资源。
该用于终止接入和移动性管理策略关联的装置1300可以对应(例如，可以配置于或本身即为)上述方法300中描述的第一PCF，并且，该用于终止接入和移动性管理策略关联的装置1300中各模块或单元分别用于执行上述方法300中第一PCF所执行的各动作或处理过程，这里，为了避免赘述，省略其详细说明。
在本申请实施例中，该装置1300可以为第一PCF，此种情况下，该装置1300可以包括：处理器、发送器和接收器，处理器、发送器和接收器通信连接，可选地，该装置还包括存储器，存储器与处理器通信连接。可选地，处理器、存储器、发送器和接收器可以通信连接，该存储器可以用于存储指令，该处理器用于执行该存储器存储的指令，以控制发送器发送信息或接收器接收信号。
此种情况下，图16所示的装置1300中的接收单元1310可以对应该接收器，图16所示的装置1300中的处理单元1320也可以对应该处理器。另一种实施方式中，发送器和接收器可以由同一个部件收发器实现。
在本申请实施例中，该装置1300可以为安装在终端设备中的芯片(或者说，芯片系统)，此情况下，该装置1300可以包括：处理器和输入输出接口，处理器可以通过输入输出接口与网络设备的收发器通信连接，可选地，该装置还包括存储器，存储器与处理器通信连接。可选地，处理器、存储器和收发器可以通信连接，该存储器可以用于存储指令，该处理器用于执行该存储器存储的指令，以控制收发器发送信息或信号。
此情况下，图16所示的装置1300中的接收单元可以对应该输入接口，图6所示的装置1300中的处理单元可以对应该处理器。
图17所示为本申请实施例提供的用于终止接入和移动性管理策略关联的装置1400，该装置1400包括：
发送单元1410，用于向第一AMF发送第二策略控制功能PCF的第二PCF标识信息；或，
发送单元1410还用于，用于向第一AMF发送第一指示信息，所述第一指示信息用于指示所述第二PCF与第一PCF相异；
其中，所述第二AMF是当前服务终端设备的AMF，所述第一AMF是在所述第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二PCF是当前服务所述终端设备的PCF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF。
因此，本申请实施例提供的用于终止接入和移动性管理策略关联的装置，该装置通过向第一AMF发送第二PCE标识信息或第一指示信息，可以第一AMF确定第二PCF与第一PCF是否相同，这样，在该第二PCF和该第一PCF相异的情况下，该第一AMF可以通过向该第一PCF发送用于指示该第一PCF删除AM策略关联，使得该第一PCF删除对应的AM策略控制信息，有效地节省了系统资源。
该用于终止接入和移动性管理策略关联的装置1400可以对应(例如，可以配置于或本身即为)上述方法300中描述的第二PCF，并且，该用于终止接入和移动性管理策略关联的装置1400中各模块或单元分别用于执行上述方法300中第二PCF所执行的各动作或 处理过程，这里，为了避免赘述，省略其详细说明。
在本申请实施例中，该装置1400可以为第二AMF，此种情况下，该装置1400可以包括：处理器、发送器和接收器，处理器、发送器和接收器通信连接，可选地，该装置还包括存储器，存储器与处理器通信连接。可选地，处理器、存储器、发送器和接收器可以通信连接，该存储器可以用于存储指令，该处理器用于执行该存储器存储的指令，以控制发送器发送信息或接收器接收信号。
此种情况下，图17所示的装置1400中的发送单元1410可以对应该发送器。
在本申请实施例中，该装置1400可以为安装在终端设备中的芯片(或者说，芯片系统)，此情况下，该装置1400可以包括：处理器和输入输出接口，处理器可以通过输入输出接口与网络设备的收发器通信连接，可选地，该装置还包括存储器，存储器与处理器通信连接。可选地，处理器、存储器和收发器可以通信连接，该存储器可以用于存储指令，该处理器用于执行该存储器存储的指令，以控制收发器发送信息或信号。
此情况下，图17所示的装置1400中的发送单元可以对应该输出接口。
图18所示为本申请实施例提供的用于终止接入和移动性管理策略关联的装置1500，该装置1500包括：
接收单元1510，用于接收第二接入和移动性管理功能AMF发送的关联请求信息，所述关联请求信息用于请求建立与所述装置的针对终端设备的AM策略关联，所述关联请求信息还包括用于确定第一PCF与所述装置是否相同的第二指示信息；
发送单元1520，用于根据所述第二指示信息，向第一AMF发送第二删除请求信息，所述第二删除请求信息用于请求所述第一AMF删除所述第一PCF和所述第一AMF之间针对所述终端设备的AM策略控制信息；
处理单元1530，用于保存针对所述终端设备的AM策略控制信息；
其中，所述第二AMF是当前服务所述终端设备的AMF，所述第一AMF是在所述第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述装置是当前服务所述终端设备的PCF，所述第一PCF是在所述装置服务所述终端设备之前服务所述终端设备的PCF。
在一种可能的实现方式中，所述发送单元1520具体用于：
在所述第一PCF与所述装置相同的情况下，向所述第一AMF发送所述第二删除请求信息。
在一种可能的实现方式中所述第二指示信息包括所述第一PCF的第一PCF标识信息；以及，
所述处理单元1530还用于：
根据所述第一PCF标识信息和所述装置，确定所述第一PCF与所述装置相同。
因此，本申请实施例提供的用于终止接入和移动性管理策略关联的装置，与第二AMF已经建立AM策略关联的该装置通过接收该第二AMF发送的用于确定与第一AMF已经建立AM策略关联的第一PCF与该装置是否相同的第二指示信息，其中，该第一AMF是在该第二AMF服务终端设备之前服务该终端设备的AMF，并且，该装置根据该第二指示信息发送删除请求信息，可以使得该第二AMF删除该终端设备的AM策略控制信息，也节省了系统资源。
该用于终止接入和移动性管理策略关联的装置1500可以对应(例如，可以配置于或 本身即为)上述方法700中描述的第二PCF，并且，该用于终止接入和移动性管理策略关联的装置1500中各模块或单元分别用于执行上述方法700中第二PCF所执行的各动作或处理过程，这里，为了避免赘述，省略其详细说明。
在本申请实施例中，该装置1500可以为第一PCF，此种情况下，该装置1500可以包括：处理器、发送器和接收器，处理器、发送器和接收器通信连接，可选地，该装置还包括存储器，存储器与处理器通信连接。可选地，处理器、存储器、发送器和接收器可以通信连接，该存储器可以用于存储指令，该处理器用于执行该存储器存储的指令，以控制发送器发送信息或接收器接收信号。
此种情况下，图18所示的装置1500中的接收单元1510可以对应该接收器，图18所示的装置1500中的发送单元1520可以对应该发送器，图18所示的装置1500中的处理单元1530也可以对应该处理器。另一种实施方式中，发送器和接收器可以由同一个部件收发器实现。
在本申请实施例中，该装置1500可以为安装在终端设备中的芯片(或者说，芯片系统)，此情况下，该装置1500可以包括：处理器和输入输出接口，处理器可以通过输入输出接口与网络设备的收发器通信连接，可选地，该装置还包括存储器，存储器与处理器通信连接。可选地，处理器、存储器和收发器可以通信连接，该存储器可以用于存储指令，该处理器用于执行该存储器存储的指令，以控制收发器发送信息或信号。
此情况下，图18所示的装置1500中的接收单元可以对应该输入接口，图18所示的装置1500中的发送单元可以对应该输出接口，图18所示的装置1200中的处理单元可以对应该处理器。
图19所示为本申请实施例提供的用于终止接入和移动性管理策略关联的装置1600，该装置1600包括：
接收单元1610，用于接收第二策略控制功能PCF发送的第二删除请求信息，所述第二删除请求信息用于请求所述装置删除第一PCF和所述装置之间针对终端设备的AM策略控制信息，所述第一PCF与所述第二PCF相同；
处理单元1620，用于删除针对所述终端设备的AM策略控制信息；
其中，所述装置是在第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二AMF是当前服务所述终端设备的AMF，所述第二PCF是当前服务所述终端设备的PCF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF。
因此，本申请实施例提供的用于终止接入和移动性管理策略关联的装置，与第一PCF已经建立AM策略关联的该装置根据接收到的第二AMF发送的第二删除请求信息，删除该终端设备的AM策略控制信息，节省了系统资源。
该用于终止接入和移动性管理策略关联的装置1600可以对应(例如，可以配置于或本身即为)上述方法700中描述的第一AMF，并且，该用于终止接入和移动性管理策略关联的装置1600中各模块或单元分别用于执行上述方法700中第一AMF所执行的各动作或处理过程，这里，为了避免赘述，省略其详细说明。
在本申请实施例中，该装置1600可以为第一AMF，此种情况下，该装置1600可以包括：处理器、发送器和接收器，处理器、发送器和接收器通信连接，可选地，该装置还包括存储器，存储器与处理器通信连接。可选地，处理器、存储器、发送器和接收器可以 通信连接，该存储器可以用于存储指令，该处理器用于执行该存储器存储的指令，以控制发送器发送信息或接收器接收信号。
此种情况下，图19所示的装置1600中的接收单元1610可以对应该接收器，图19所示的装置1600中的处理单元1620也可以对应该处理器。另一种实施方式中，发送器和接收器可以由同一个部件收发器实现。
在本申请实施例中，该装置1600可以为安装在终端设备中的芯片(或者说，芯片系统)，此情况下，该装置1600可以包括：处理器和输入输出接口，处理器可以通过输入输出接口与网络设备的收发器通信连接，可选地，该装置还包括存储器，存储器与处理器通信连接。可选地，处理器、存储器和收发器可以通信连接，该存储器可以用于存储指令，该处理器用于执行该存储器存储的指令，以控制收发器发送信息或信号。
此情况下，图19所示的装置1600中的接收单元可以对应该输入接口，图19所示的装置1600中的处理单元可以对应该处理器。
图20所示为本申请实施例提供的用于终止接入和移动性管理策略关联的装置1700，该装置1700包括：
接收单元1710，用于接收第三接入和移动性功能AMF发送的用于请求建立与所述第三PCF的针对终端设备的AM策略关联的第一关联请求信息，所述第一关联请求信息还包括用于标识所述第三AMF的第三AMF标识信息；
所述接收单元1710还用于，接收第四接入和移动性管理功能AMF发送的第二关联请求信息，所述第二关联请求信息用于请求建立与所述第三PCF的针对所述终端设备的AM策略关联，所述第二关联请求信息还包括用于标识所述第四AMF的第四AMF标识信息；
所述接收单元1710还用于，接收所述第三AMF发送的第三删除请求信息，所述第三删除请求信息于请求所述第三PCF删除所述第三PCF和所述第三AMF之间针对所述终端设备的AM策略关联，所述第三删除请求信息还包括所述第三AMF标识信息；
处理单元1720，用于根据所述第四AMF标识信息和所述第三删除请求信息，保存针对所述终端设备的AM策略控制信息。
因此，本申请实施例提供的终止接入和移动性管理策略关联的装置，每个需要与PCF(例如，第三PCF)建立AM策略关联的AMF(例如，第三AMF或第四AMF)在建立AM策略关联连接过程向该第三PCF发送自己的标识，并且，在预设时长后发送携带自己的标识的删除请求信息，该第三PCF通过在建立AM策略关联时接收到最近的AMF的标识(例如，第四AMF的标识)和接收到的删除请求信息中携带的AMF的标识(例如，第三AMF的标识)进行比较，在两个AMF相异的情况下，该第三PCF保存AM策略控制信息，仅第三AMF删除AM策略控制信息，不仅重用了PCF中的AM策略控制信息，也节省了系统资源。
该用于终止接入和移动性管理策略关联的装置1700可以对应(例如，可以配置于或本身即为)上述方法800中描述的第三PCF，并且，该用于终止接入和移动性管理策略关联的装置1700中各模块或单元分别用于执行上述方法800中第三PC所执行的各动作或处理过程，这里，为了避免赘述，省略其详细说明。
在本申请实施例中，该装置1700可以为第三PC，此种情况下，该装置1700可以包 括：处理器、发送器和接收器，处理器、发送器和接收器通信连接，可选地，该装置还包括存储器，存储器与处理器通信连接。可选地，处理器、存储器、发送器和接收器可以通信连接，该存储器可以用于存储指令，该处理器用于执行该存储器存储的指令，以控制发送器发送信息或接收器接收信号。
此种情况下，图20所示的装置1700中的接收单元1710可以对应该接收器，图20所示的装置1700中的处理单元1720也可以对应该处理器。另一种实施方式中，发送器和接收器可以由同一个部件收发器实现。
在本申请实施例中，该装置1700可以为安装在终端设备中的芯片(或者说，芯片系统)，此情况下，该装置1700可以包括：处理器和输入输出接口，处理器可以通过输入输出接口与网络设备的收发器通信连接，可选地，该装置还包括存储器，存储器与处理器通信连接。可选地，处理器、存储器和收发器可以通信连接，该存储器可以用于存储指令，该处理器用于执行该存储器存储的指令，以控制收发器发送信息或信号。
此情况下，图20所示的装置1700中的接收单元可以对应该输入接口，图20所示的装置1700中的处理单元可以对应该处理器。
图21所示为本申请实施例提供的用于终止接入和移动性管理策略关联的装置1800，该装置1800包括：
接收单元1810，用于接收第三接入和移动性管理功能AMF发送的第一关联请求信息，所述第一关联请求信息用于请求建立与所述第三PCF的针对终端设备的AM策略关联，所述第一关联请求信息还包括用于标识所述第三AMF的第三AMF标识信息；
所述接收单元1810还用于，接收所述第三AMF发送的第三删除请求信息，所述第三删除请求信息于请求所述第三PCF删除所述第三PCF和所述第三AMF之间针对所述终端设备的AM策略控制信息，所述第三删除请求信息还包括所述第三AMF标识信息；
处理单元1820，用于根据所述第三AMF标识信息和所述第三删除请求信息，删除针对所述终端设备的AM策略控制信息。
因此，本申请实施例提供的终止接入和移动性管理策略关联的装置，每个需要与PCF建立AM策略关联的AMF(例如，第三AMF或第四AMF)在建立AM策略关联连接过程向PCF(例如，第三PCF)发送自己的标识，并且，在预设时长后发送携带自己的标识的删除请求信息，该第三PCF通过在建立AM策略关联时接收到最近的AMF的标识(例如，第三AMF的标识)和接收到的删除请求信息中携带的AMF的标识(例如，第三AMF的标识)进行比较，在两个AMF相同的情况下，该第三PCF删除AM策略控制信息，AMF也删除AM策略控制信息，节省了系统资源。
该用于终止接入和移动性管理策略关联的装置1800可以对应(例如，可以配置于或本身即为)上述方法900中描述的第三PCF，并且，该用于终止接入和移动性管理策略关联的装置1800中各模块或单元分别用于执行上述方法900中第三PCF所执行的各动作或处理过程，这里，为了避免赘述，省略其详细说明。
在本申请实施例中，该装置1800可以为第三PC，此种情况下，该装置1800可以包括：处理器、发送器和接收器，处理器、发送器和接收器通信连接，可选地，该装置还包括存储器，存储器与处理器通信连接。可选地，处理器、存储器、发送器和接收器可以通信连接，该存储器可以用于存储指令，该处理器用于执行该存储器存储的指令，以控制发 送器发送信息或接收器接收信号。
此种情况下，图21所示的装置1800中的接收单元1810可以对应该接收器，图20所示的装置1800中的处理单元1820也可以对应该处理器。另一种实施方式中，发送器和接收器可以由同一个部件收发器实现。
在本申请实施例中，该装置1800可以为安装在终端设备中的芯片(或者说，芯片系统)，此情况下，该装置1800可以包括：处理器和输入输出接口，处理器可以通过输入输出接口与网络设备的收发器通信连接，可选地，该装置还包括存储器，存储器与处理器通信连接。可选地，处理器、存储器和收发器可以通信连接，该存储器可以用于存储指令，该处理器用于执行该存储器存储的指令，以控制收发器发送信息或信号。
此情况下，图21所示的装置1800中的接收单元可以对应该输入接口，图21所示的装置1800中的处理单元可以对应该处理器。
图22所示为本申请实施例提供的用于终止接入和移动性管理策略关联的装置1900，该装置1900包括：
发送单元1910，用于向第三策略控制功能PCF发送用于请求建立与所述AMF的针对终端设备的AM策略关联的第一关联请求信息，所述第一关联请求信息还包括用于标识所述第三AMF的第三AMF标识信息；
发送单元1910还用于，在预设时长后向所述第三PCF发送第三删除请求信息，所述第三删除请求信息于请求所述第三PCF删除所述第三PCF和所述第三AMF之间针对所述终端设备的AM策略控制信息，所述第三删除请求信息还包括所述第三AMF标识信息；
处理单元1920，用于删除针对所述终端设备的AM策略控制信息。
因此，本申请实施例提供的终止接入和移动性管理策略关联的装置，每个AMF(例如，第三AMF)在建立AM策略关联连接过程向PCF(例如，第三PCF)发送自己的标识，并且，在预设时长后发送携带自己的标识的删除请求信息，可以使得该第三PCF通过在建立AM策略关联时接收到的最近的AMF的标识(例如，第三AMF或其他AMF)和接收到的删除请求信息中携带的AMF的标识(例如，第三AMF的标识)进行比较，在两个AMF相异的情况下，该第三PCF保存AM策略控制信息，仅该第三AMF删除AM策略控制信息，或者，在两个AMF相同的情况下，该第三PCF删除AM策略控制信息，该第三AMF也删除AM策略控制信息，节省了系统资源。
在一种可能的实现方式中，所述装置还包括接收单元1930，所述处理单元1920还用于：
在所述接收单元1930接收到统一数据管理UDM发送的去注册信息之后，开启定时器，所述定时器的时长为所述预设时长。
由于UDM向第一AMF发送去注册消息的时间与第二AMF选择PCF的时间较近，因此，在该第一AMF接收到去注册消息后开启定时器，可以节省时间。
该用于终止接入和移动性管理策略关联的装置1900可以对应(例如，可以配置于或本身即为)上述方法800或900中描述的第三AMF，并且，该用于终止接入和移动性管理策略关联的装置1900中各模块或单元分别用于执行上述方法800或900中第三AMF所执行的各动作或处理过程，这里，为了避免赘述，省略其详细说明。
在本申请实施例中，该装置1900可以为第三AMF，此种情况下，该装置1900可以 包括：处理器、发送器和接收器，处理器、发送器和接收器通信连接，可选地，该装置还包括存储器，存储器与处理器通信连接。可选地，处理器、存储器、发送器和接收器可以通信连接，该存储器可以用于存储指令，该处理器用于执行该存储器存储的指令，以控制发送器发送信息或接收器接收信号。
此种情况下，图22所示的装置1900中的发送单元1910可以对应该发送器，图22所示的装置1900中的处理单元1920也可以对应该处理器。另一种实施方式中，发送器和接收器可以由同一个部件收发器实现。
在本申请实施例中，该装置1900可以为安装在终端设备中的芯片(或者说，芯片系统)，此情况下，该装置1900可以包括：处理器和输入输出接口，处理器可以通过输入输出接口与网络设备的收发器通信连接，可选地，该装置还包括存储器，存储器与处理器通信连接。可选地，处理器、存储器和收发器可以通信连接，该存储器可以用于存储指令，该处理器用于执行该存储器存储的指令，以控制收发器发送信息或信号。
此情况下，图22所示的装置1900中的发送单元可以对应该输出接口，图22所示的装置1900中的处理单元可以对应该处理器。
应注意，本申请实施例上述方法实施例可以应用于处理器中，或者由处理器实现。处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例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。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(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。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。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。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译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块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，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
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 (27)

  1. 一种用于终止接入和移动性管理策略关联的方法，其特征在于，所述方法包括：
    第一接入移动性管理功能AMF向第二AMF发送第一策略控制功能PCF的第一PCF标识信息；
    所述第一AMF向所述第一PCF发送第一删除请求信息，所述第一删除请求信息用于请求所述第一PCF删除所述第一PCF和所述第一AMF之间针对终端设备的AM策略关联，所述第一PCF与第二PCF相异；
    所述第一AMF删除针对所述终端设备的AM策略控制信息；
    其中，所述第二AMF是当前服务所述终端设备的AMF，所述第一AMF是在所述第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二PCF是当前服务所述终端设备的PCF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF。
  2. 根据权利要求1所述的方法，在所述第一AMF向所述第一PCF发送第一删除请求信息之前，所述方法还包括：
    所述第一AMF接收所述第二AMF发送的所述第二PCF的第二PCF标识信息；或，
    所述第一AMF接收所述第二AMF发送的第一指示信息，所述第一指示信息用于指示所述第一PCF与所述第二PCF相异。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一AMF向所述第一PCF发送第一删除请求信息，包括：
    在所述第一AMF在预设时长内未接收到所述第一PCF发送的第二删除请求信息的情况下，所述第一AMF向所述第二AMF发送所述第一删除请求信息，其中，所述第二删除请求信息用于请求所述第一AMF删除所述第一PCF和所述第一AMF之间针对所述终端设备的AM策略控制信息。
  4. 根据权利要求3所述的方法，其特征在于，所述方法还包括：
    在所述第一AMF接收到统一数据管理UDM发送的去注册信息之后，所述第一AMF开启定时器，所述定时器的时长为所述预设时长；或，
    在所述第一AMF向所述第二AMF发送所述第一PCF标识信息后，所述第一AMF开启定时器，所述定时器的时长为所述预设时长。
  5. 一种用于终止接入和移动性管理策略关联的方法，其特征在于，所述方法包括：
    第一策略控制功能PCF接收第一接入和移动性管理功能AMF发送的第一删除请求信息，所述第一删除请求信息用于请求所述第一PCF删除所述第一PCF和所述第一AMF之间针对终端设备的AM策略关联，所述第一PCF与第二PCF相异；
    所述第一PCF删除针对所述终端设备的AM策略控制信息；
    其中，所述第一AMF是在第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二AMF是当前服务所述终端设备的AMF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF，所述第二PCF是当前服务所述终端设备的 PCF。
  6. 一种用于终止接入和移动性管理策略关联的方法，其特征在于，所述方法包括：第二接入和移动性管理功能AMF接收来自第一AMF的第一策略控制功能PCF的第一PCF标识信息；
    所述第二AMF向所述第一AMF发送第二PCF的第二PCF标识信息；或，第二AMF向第一AMF发送第一指示信息，所述第一指示信息用于指示所述第二PCF与第一PCF相异；
    其中，所述第二AMF是当前服务终端设备的AMF，所述第一AMF是在所述第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二PCF是当前服务所述终端设备的PCF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF。
  7. 一种用于终止接入和移动性管理策略关联的方法，其特征在于，所述方法包括：
    第二策略控制功能PCF接收第二接入和移动性管理功能AMF发送的关联请求信息，所述关联请求信息用于请求建立与所述第二PCF的针对终端设备的AM策略关联，所述关联请求信息还包括用于确定所述第二PCF与第一PCF是否相同的第二指示信息；
    所述第二PCF根据所述第二指示信息，向第一AMF发送第二删除请求信息，所述第二删除请求信息用于请求所述第一AMF删除所述第一PCF和所述第一AMF之间针对所述终端设备的AM策略控制信息；
    所述第一PCF保存针对所述终端设备的AM策略控制信息；
    其中，所述第二AMF是当前服务所述终端设备的AMF，所述第一AMF是在所述第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二PCF是当前服务所述终端设备的PCF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF。
  8. 根据权利要求7所述的方法，其特征在于，所述第二PCF根据所述第二指示信息，向第一AMF发送第二删除请求信息，包括：
    在所述第一PCF与所述第二PCF相同的情况下，所述第二PCF向所述第一AMF发送所述第二删除请求信息。
  9. 根据权利要求8所述的方法，其特征在于，所述第二指示信息包括所述第一PCF的第一PCF标识信息；以及，
    所述方法还包括：
    所述第二PCF根据所述第一PCF标识信息和所述第二PCF，确定所述第一PCF与所述第二PCF相同。
  10. 一种用于终止接入和移动性管理策略关联的方法，其特征在于，所述方法包括：
    第一接入和移动性管理功能AMF接收第二策略控制功能PCF发送的第二删除请求信息，所述第二删除请求信息用于请求所述第一AMF删除第一PCF和所述第一AMF之间针对终端设备的AM策略控制信息，所述第一PCF与所述第二PCF相同；
    所述第一AMF删除针对所述终端设备的AM策略控制信息；
    其中，所述第一AMF是在第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二AMF是当前服务所述终端设备的AMF，所述第二PCF是当前服务所述终端设 备的PCF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF。
  11. 一种用于终止接入和移动性管理策略关联的装置，其特征在于，所述装置包括：
    发送单元，用于向第二AMF发送第一策略控制功能PCF的第一PCF标识信息；
    所述发送单元还用于，向所述第一PCF发送第一删除请求信息，所述第一删除请求信息用于请求所述第一PCF删除所述第一PCF和所述装置之间针对终端设备的AM策略关联，所述第一PCF与第二PCF相异；
    处理单元，所述处理单元用于删除针对所述终端设备的AM策略控制信息；
    其中，所述第二AMF是当前服务所述终端设备的AMF，所述装置是在所述第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二PCF是当前服务所述终端设备的PCF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF。
  12. 根据权利要求11所述的装置，其特征在于，所述装置还包括接收单元；以及，
    所述发送单元具体用于：
    在所述接收单元在预设时长内未接收到所述第一PCF发送的第二删除请求信息的情况下，向所述第二AMF发送所述第一删除请求信息，其中，所述第二删除请求信息用于请求所述装置删除所述第一PCF和所述装置之间针对所述终端设备的AM策略控制信息。
  13. 根据权利要求12所述的装置，其特征在于，所述装置还包括接收单元；以及，
    所述处理单元还用于：
    在所述接收单元接收到统一数据管理UDM发送的去注册信息之后，开启定时器，所述定时器的时长为所述预设时长；或，
    在所述接收单元向所述第二AMF发送所述第一PCF标识信息后，开启定时器，所述定时器的时长为所述预设时长。
  14. 根据权利要求11所述的装置，所述装置还包括接收单元，所述接收单元用于：
    接收所述第二AMF发送的所述第二PCF的第二PCF标识信息；或，
    接收所述第二AMF发送的第一指示信息，所述第一指示信息用于指示所述第一PCF与所述第二PCF相异。
  15. 一种用于终止接入和移动性管理策略关联的装置，其特征在于，所述装置包括：
    接收单元，用于接收第一接入和移动性管理功能AMF发送的第一删除请求信息，所述第一删除请求信息用于请求所述装置删除所述装置和所述第一AMF之间针对终端设备的AM策略关联，所述装置与第二PCF相异；
    处理单元，用于删除针对所述终端设备的AM策略控制信息；
    其中，所述第一AMF是在第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二AMF是当前服务所述终端设备的AMF，所述装置是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF，所述第二PCF是当前服务所述终端设备的PCF。
  16. 一种用于终止接入和移动性管理策略关联的装置，其特征在于，所述装置包括：
    接收单元，用于接收来自第一接入和移动性管理功能AMF的第一策略控制功能PCF的第一PCF标识信息；
    发送单元，用于向第一AMF发送第二PCF的第二PCF标识信息；或，
    发送单元，用于向第一AMF发送第一指示信息，所述第一指示信息用于指示所述第二PCF与第一PCF相异；
    其中，所述第二AMF是当前服务终端设备的AMF，所述第一AMF是在所述第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二PCF是当前服务所述终端设备的PCF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF。
  17. 一种用于终止接入和移动性管理策略关联的装置，其特征在于，所述装置包括：
    接收单元，用于接收第二接入和移动性管理功能AMF发送的关联请求信息，所述关联请求信息用于请求建立与所述装置的针对终端设备的AM策略关联，所述关联请求信息还包括用于确定第一PCF与所述装置是否相同的第二指示信息；
    发送单元，用于根据所述第二指示信息，向第一AMF发送第二删除请求信息，所述第二删除请求信息用于请求所述第一AMF删除所述第一PCF和所述第一AMF之间针对所述终端设备的AM策略控制信息；
    处理单元，用于保存针对所述终端设备的AM策略控制信息；
    其中，所述第二AMF是当前服务所述终端设备的AMF，所述第一AMF是在所述第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述装置是当前服务所述终端设备的PCF，所述第一PCF是在所述装置服务所述终端设备之前服务所述终端设备的PCF。
  18. 根据权利要求17所述的装置，其特征在于，所述发送单元具体用于：
    在所述第一PCF与所述装置相同的情况下，向所述第一AMF发送所述第二删除请求信息。
  19. 根据权利要求18所述的装置，其特征在于，所述第二指示信息包括所述第一PCF的第一PCF标识信息；以及，
    所述处理单元还用于：
    根据所述第一PCF标识信息和所述装置，确定所述第一PCF与所述装置相同。
  20. 一种用于终止接入和移动性管理策略关联的装置，其特征在于，所述装置包括：
    接收单元，用于接收第二策略控制功能PCF发送的第二删除请求信息，所述第二删除请求信息用于请求所述装置删除第一PCF和所述装置之间针对终端设备的AM策略控制信息，所述第一PCF与所述第二PCF相同；
    处理单元，用于删除针对所述终端设备的AM策略控制信息；
    其中，所述装置是在第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二AMF是当前服务所述终端设备的AMF，所述第二PCF是当前服务所述终端设备的PCF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF。
  21. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1至5中任意一项所述的方法，或使得所述计算机执行如权利要求6所述的方法，或使得所述计算机执行如权利要求7-9任一所述的方法，或使得所述计算机执行如权利要求10所述的方法。
  22. 一种芯片系统，其特征在于，所述芯片系统包括：
    存储器：用于存储指令；
    处理器，用于从所述存储器中调用并运行所述指令，使得安装有所述芯片系统的通信 设备执行如权利要求1至5中任意一项所述的方法，或使得所述通信设备执行如权利要求6所述的方法，或使得所述通信设备执行如权利要求7-9任一所述的方法，或使得所述通信设备执行如权利要求10所述的方法。
  23. 一种计算机程序产品，所述计算机程序产品包括计算机程序，当所述计算机程序在计算机上运行时，使得计算机执行如权利要求1至5中任意一项所述的方法，或使得所述计算机执行如权利要求6所述的方法，或使得所述计算机执行如权利要求7-9任一所述的方法，或使得所述计算机执行如权利要求10所述的方法。
  24. 一种系统，所述系统包括：第一接入和移动性管理功能AMF和第二AMF；
    所述第一AMF，用于向第二AMF发送第一策略控制功能PCF的第一PCF标识信息；
    所述第二AMF，用于向所述第一AMF发送第二PCF的第二PCF标识信息，所述第一PCF与第二PCF相异；或所述第二AMF用于向所述第一AMF发送第一指示信息，所述第一指示信息用于指示所述第一PCF与所述第二PCF相异；
    所述第一AMF用于向所述第一PCF发送第一删除请求信息，所述第一删除请求信息用于请求所述第一PCF删除所述第一PCF和所述第一AMF之间针对终端设备的AM策略关联；
    所述第一AMF还用于删除针对所述终端设备的AM策略控制信息；
    其中，所述第二AMF是当前服务所述终端设备的AMF，所述第一AMF是在所述第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二PCF是当前服务所述终端设备的PCF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF。
  25. 根据权利要求24所述的系统，其特征在于，所述系统还包括第一PCF，所述第一PCF用于删除所述第一PCF和所述第一AMF之间针对终端设备的AM策略关联。
  26. 一种系统，所述系统包括：第一接入和移动性管理功能AMF和第一策略控制功能PCF；
    所述第一AMF，用于向第二AMF发送第一PCF的第一PCF标识信息；
    所述第一AMF，用于接收所述第二AMF发送第二PCF的第二PCF标识信息，所述第一PCF与第二PCF相异；或所述第一AMF用于接收所述第二AMF发送第一指示信息，所述第一指示信息用于指示所述第一PCF与所述第二PCF相异；
    所述第一AMF用于向所述第一PCF发送第一删除请求信息，所述第一删除请求信息用于请求所述第一PCF删除所述第一PCF和所述第一AMF之间针对终端设备的AM策略关联；
    所述第一PCF用于删除所述第一PCF和所述第一AMF之间针对终端设备的AM策略关联；
    所述第一AMF还用于删除针对所述终端设备的AM策略控制信息；
    其中，所述第二AMF是当前服务所述终端设备的AMF，所述第一AMF是在所述第二AMF服务所述终端设备之前服务所述终端设备的AMF，所述第二PCF是当前服务所述终端设备的PCF，所述第一PCF是在所述第二PCF服务所述终端设备之前服务所述终端设备的PCF。
  27. 根据权利要求26所述的系统，其特征在于，所述系统还包括第二AMF，所述第 二AMF，用于向所述第一AMF发送所述第二PCF标识信息；或所述第二AMF用于向所述第一AMF发送所述第一指示信息。
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