WO2019137553A1 - 一种配置ue的策略的方法、装置和系统 - Google Patents

一种配置ue的策略的方法、装置和系统 Download PDF

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Publication number
WO2019137553A1
WO2019137553A1 PCT/CN2019/071741 CN2019071741W WO2019137553A1 WO 2019137553 A1 WO2019137553 A1 WO 2019137553A1 CN 2019071741 W CN2019071741 W CN 2019071741W WO 2019137553 A1 WO2019137553 A1 WO 2019137553A1
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WIPO (PCT)
Prior art keywords
policy
network element
information
configuration information
function network
Prior art date
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PCT/CN2019/071741
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English (en)
French (fr)
Inventor
孙海洋
熊春山
吴义壮
Original Assignee
华为技术有限公司
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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 BR112020014328-6A priority Critical patent/BR112020014328A2/pt
Priority to KR1020207023615A priority patent/KR102393005B1/ko
Priority to EP19738726.9A priority patent/EP3739920B1/en
Priority to JP2020558675A priority patent/JP7184922B2/ja
Publication of WO2019137553A1 publication Critical patent/WO2019137553A1/zh
Priority to US16/928,241 priority patent/US11647124B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/66—Policy and charging system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/183—Processing at user equipment or user record carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • 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
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/20—Transfer of user or subscriber data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/20—Transfer of user or subscriber data
    • H04W8/205—Transfer to or from user equipment or user record carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • 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
    • H04W8/12—Mobility data transfer between location registers or mobility servers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a method, an apparatus, and a system for configuring a policy of a user equipment (UE).
  • UE user equipment
  • next generation mobile communication system next generation system
  • 5G fifth generation
  • a policy control function (PCF) network element is usually used to provide different policy control services for the UE.
  • the PCF network element may send a policy to the UE by using a non-access stratum (NAS) message.
  • the policy includes an access ntwork discovery & selection policy (ANDSP) and a UE route selection policy (URSP), which are respectively used to select an access method and a packet data unit (PDU). ) Session.
  • ANDSP access ntwork discovery & selection policy
  • URSP UE route selection policy
  • the PCF network element may need to send the policy to the UE multiple times.
  • the PCF network element can maintain the policies that the UE sends to the UE.
  • the UE may replace the PCF network element in the process of moving within the same public land mobile network (PLMN).
  • PLMN public land mobile network
  • the embodiments of the present application provide a method, an apparatus, and a system for configuring a policy of a UE, which are helpful for saving air interface resources.
  • an embodiment of the present application provides a method for configuring a policy of a UE.
  • the method may include: the PCF network element receives policy information of the UE sent by the first network element, where the policy information of the UE is used to indicate a policy of the UE; and the PCF network element sends the policy to the UE according to at least the policy information of the UE.
  • Configuration information wherein the configuration information is used to indicate that the UE updates the policy of the UE.
  • the first network element may be a UDR network element or an AMF network element.
  • the policy information of the UE is used to indicate a current policy of the UE, that is, a policy that the UE is configured on the current network side.
  • the policy may include, for example but not limited to, at least one of URSP, ANDSP, and WLANSP, although the application is not limited thereto.
  • the PCF network element may obtain the policy information of the UE from the first network element, so as to send the configuration information to the UE according to the policy information of the UE, which helps the PCF network element to no longer be sent to the UE.
  • the policy indicated by the UE's policy information is sent, thereby helping to save air interface resources.
  • the PCF network element sends the configuration information to the UE according to the policy information of the UE, and the configuration information includes: the configuration information includes the first configuration information, and the PCF network element sends the first configuration information to the UE.
  • the first configuration information is used to indicate the first policy of the UE, and the policy indicated by the policy information of the UE does not include the first policy.
  • the first configuration information may include the first policy.
  • the PCF network element may not deliver the policy indicated by the UE's policy information to the UE. Compared with the prior art, the PCF network element needs to deliver all the policies to the UE, which can save air interface resources.
  • the PCF network element sends the configuration information to the UE according to the policy information of the UE, where the configuration information includes the second configuration information, and the PCF network element sends the second configuration information to the UE.
  • the second configuration information is used to indicate that the UE deletes the second policy, and the policy indicated by the policy information of the UE includes the second policy.
  • the second configuration information may include the identifier information of the second policy.
  • the PCF network element sends configuration information to the UE according to at least the policy information of the UE, where the configuration information includes the third configuration information, and the PCF network element sends the third configuration information to the UE.
  • the third configuration information is used to indicate that the UE updates the third policy, and the policy indicated by the policy information of the UE includes the third policy.
  • the possible design provides a specific implementation manner of the policy indicated by the PCF network element to manage the policy information of the UE. The application is of course not limited thereto.
  • the method may further include: sending, by the PCF network element, the update indication information to the first network element, where the update indication information includes at least one of the foregoing configuration information and the configuration information identifier, where the configuration information identifier is used for Indicate the above configuration information.
  • the update indication information may include the identifier information of the first policy.
  • the update indication may include the identification information of the second policy, and the like. Other examples are not listed one by one.
  • the PCF network element synchronizes the information of the updated policy to the first network element in the case that the policy information of the UE is updated, so that the PCF network element that subsequently provides the service to the UE can The first network element obtains the latest policy information of the UE, thereby helping to save air interface resources.
  • the method may further include: receiving, by the PCF network element, policy storage state information sent by the UE, where the policy storage state information is used to indicate whether the UE stores a PCF policy; if the policy state information indicates the The UE does not store the PCF policy, and the PCF network element sends a PCF policy to the UE.
  • This possible design can be applied to the loss of the PCF policy stored by the UE, for example, in the scenario where the UE receives the lost policy before replacing the SIM card due to the replacement of the SIM card.
  • the PCF policy may be a policy indicated by the policy information of the UE.
  • the PCF network element receives the policy storage state information sent by the UE, and may include: the PCF network element receives the policy control acquisition request message sent by the AMF network element; and the policy control acquisition request message carries the policy storage state information. After receiving the registration request message sent by the UE, the AMF network element sends a policy control acquisition request message to the PCF network element.
  • the possible design provides a manner for the UE to report the policy storage status information, and the application is not limited thereto.
  • the embodiment of the present application provides a method for configuring a policy of a UE.
  • the method may include: sending, by the first network element, policy information of the UE to the PCF network element, where the policy information is used to indicate a policy of the UE; and instructing the PCF network element to send configuration information to the UE according to at least the policy information; A policy instructing the UE to update the UE.
  • the method may further include: the first network element receiving the update indication information sent by the PCF network element; wherein the update indication information includes at least one of the configuration information and the configuration information identifier, where the configuration information identifier is used for The configuration information is indicated; the first network element updates the policy information of the UE according to the update indication information.
  • the update indication information includes at least one of the configuration information and the configuration information identifier, where the configuration information identifier is used for The configuration information is indicated; the first network element updates the policy information of the UE according to the update indication information.
  • the first network element is the first AMF network element
  • the method may further include: the first AMF network element receives the policy information sent by the second AMF network element; wherein the second AMF network element is the The AMF network element that the UE connects before connecting the first AMF network element.
  • the possible design provides a specific implementation manner of the first AMF network element acquiring policy information.
  • the first AMF network element may be a new AMF network element in the registration process, and the second AMF network element may be in the registration process. Old AMF network element.
  • the first AMF network element may be the target AMF network element in the AMF network element handover procedure
  • the second AMF network element may be the source AMF network element in the AMF network element handover procedure.
  • the first AMF network element receives the policy information sent by the second AMF network element, where the first AMF network element receives the first message sent by the second AMF network element, where the first message includes The upper and lower information of the UE and the policy information of the UE.
  • the first message can be, for example but not limited to, a context delivery response message.
  • this application is not limited to this.
  • an embodiment of the present application provides a method for configuring a policy of a UE.
  • the method may include: the UE sends policy storage state information to the PCF network element, where the policy storage state information is used to indicate whether the UE stores a PCF policy, to indicate that the PCF network element indicates that the UE is not stored in the policy storage state information.
  • the PCF policy a PCF policy is sent to the UE.
  • the UE receives the PCF policy sent by the PCF network element.
  • the UE sends the policy storage state information to the PCF network element, where the UE may send a registration request message to the AMF network element, where the registration request message carries policy storage state information; the registration request message is used to indicate the AMF network.
  • the UE sends a policy control acquisition request message to the PCF network element, where the policy control acquisition request message carries the policy storage state information.
  • the UE sending the policy storage state information to the PCF network element may include: after receiving the configuration information sent by the PCF network element, the UE sends the policy storage state information to the PCF network element; wherein, the configuration information is The configuration information that is sent to the UE by the PCF network element according to the policy information of the UE, and the configuration information is used to indicate that the UE updates the policy of the UE.
  • the first network element may be an AMF network element or a UDR network element.
  • the policy information of the UE is used to indicate the policy of the current UE, that is, the policy that the current network side has configured the UE, and the policy may include, for example but not limited to, at least one of URSP, ANDSP, and WLANSP.
  • this application is not limited to this.
  • the embodiment of the present application provides a system for configuring a policy of a UE, where the system may include a PCF network element, a first network element, and a UE.
  • the PCF network element may be used to perform any one of the foregoing first aspects, where the first network element may be used to perform the corresponding method provided in the foregoing second aspect, where the UE may be configured to perform the corresponding method provided by the foregoing third aspect. .
  • an embodiment of the present application provides a PCF network element.
  • the PCF network element can be used to perform any of the methods provided by the first aspect above.
  • the PCF network element may specifically be the PCF network element described in the foregoing first aspect.
  • the PCF network element may be divided into functional modules according to the method provided by the foregoing first aspect.
  • each functional module may be divided according to each function, or two or more functions may be integrated.
  • a processing module In a processing module.
  • the PCF network element can include a memory and a processor for storing a computer program that, when executed by the processor, causes any of the methods provided by the first aspect to be performed.
  • the embodiment of the present application provides a first network element.
  • the first network element can be used to perform any of the methods provided by the second aspect above.
  • the first network element may specifically be the first network element described in the foregoing second aspect.
  • the first network element may be divided into functional modules according to the method provided by the foregoing second aspect.
  • each functional module may be divided according to each function, or two or more functions may be used.
  • Integrated in a processing module Integrated in a processing module.
  • the first network element can include a memory and a processor for storing a computer program that, when executed by the processor, causes any of the methods provided by the second aspect to be performed.
  • an embodiment of the present application provides a terminal device.
  • the terminal device can be used to perform any of the methods provided in the third aspect above.
  • the UE may specifically be the UE described in the above third aspect, or the terminal device may be a chip.
  • the terminal device may be divided into functional modules according to the method provided in the foregoing third aspect.
  • each functional module may be divided according to each function, or two or more functions may be integrated in the function.
  • a processing module In a processing module.
  • the terminal device can include a memory and a processor for storing a computer program that, when executed by the processor, causes any of the methods provided by the third aspect to be performed.
  • the embodiment of the present application further provides a processing device for implementing the functions of the foregoing device (for example, a PCF network element, a first network element, or a terminal device), the processing device includes a processor and an interface, and the processing device may be a chip.
  • the processor may be implemented by hardware or by software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor may be a general-purpose processor. It is implemented by reading software code stored in a memory, which can be integrated in the processor and can exist independently of the processor.
  • the embodiment of the present application further provides a computer readable storage medium having stored thereon computer instructions, when the computer instructions are run on a computer, causing the computer to perform any of the foregoing first to third aspects .
  • the embodiment of the present application also provides a computer program product, which when executed on a computer, causes any of the methods provided by the first to third aspects to be performed.
  • an embodiment of the present application provides a method for determining a PCF network element.
  • the method may include: the UDM network element sends the identifier information of the first PCF network element to the first AMF network element, to instruct the first AMF network element to select the first PCF network element as the PCF network element serving the UE.
  • the first PCF network element is an AMF network element selected by the second AMF network element to provide services for the UE.
  • the first AMF network element and the second AMF network element may be the same network element, or may be different network elements.
  • the PCF network elements selected by the two AMF network elements that serve the same UE in succession (or at the same time) may be different, or the PCF network elements selected by the same AMF network element at different times may be different.
  • the policies that cause the two PCF network elements to be configured to the UE are different, so that the UE does not know which policies to execute.
  • the method may further include: the UDM network element receiving the query request message sent by the first AMF network element.
  • the UDM network element sends the identifier information of the first PCF network element to the first AMF network element
  • the method includes: the UDM network element sends an inquiry response message to the first AMF network element, where the query response message carries the first PCF network. Meta identification information.
  • the possible design provides an implementation scenario in which the UDM network element sends the identification information of the first PCF network element to the first AMF network element. The present application is not limited thereto.
  • the UDM network element may send the identifier information of the first PCF network element to the first AMF network element when determining that the first AMF network element needs to perform the PCF network element selection process, where the application determines the first UDM network element.
  • the specific implementation manner of the AMF network element to perform the PCF network element selection process is not limited.
  • the method may further include: after receiving the query request message, the UDM network element sends the query request message to the second AMF network element to query the identifier information of the first PCF network element.
  • the UDM network element receives the identification information of the first PCF network element sent by the second AMF network element.
  • the possible design provides an implementation manner for the UDM network element to obtain the identification information of the first PCF network element. The application is of course not limited thereto.
  • the UFM network element may store the identification information of the PCF network element selected by the AMF network element for the UE.
  • the AMF network element may report the selected PCF network element to the UDM after performing the PCF network element selection process.
  • the UDM network element may send the identifier of the first PCF network element to the first AMF network element by querying the locally stored information.
  • the method may further include: the UDM network element receives the identifier information of the second PCF network element, where the second PCF network element is a PCF network that is reselected by the first AMF network element to provide services for the UE. yuan.
  • the UDM network element updates the identification information of the PCF network element that is selected by the first AMF network element to serve the UE from the identification information of the first PCF network element to the identification information of the second PCF network element. In this way, it is helpful for the subsequent AMF network element to obtain the latest identification information of the PCF network element serving the UE from the UDM network element.
  • the embodiment of the present application provides a method for determining a PCF network element.
  • the method may include: the first AMF network element receives the identification information of the first PCF network element sent by the UDM network element, and selects the first PCF network element as the PCF network element that provides the service for the UE.
  • the first PCF network element is an AMF network element selected by the second AMF network element to provide services for the UE.
  • the first AMF network element and the second AMF network element may be the same network element, or may be different network elements.
  • the method may further include: the first AMF network element sends a query request message to the UDM network element, where the query request message is used to request the identification information of the first PCF network element.
  • the first AMF network element receives the identifier information of the first PCF network element that is sent by the UDM network element, and the first AMF network element receives the query response message sent by the UDM network element, where the query response message carries the identifier of the first PCF network element. information.
  • the method may further include: the first AMF network element reselects the second PCF network element serving the UE, and sends the identification information of the second PCF network element to the UDM network element to indicate The UDM network element updates the PCF network element selected by the first AMF network element to serve the UE.
  • the embodiment of the present application provides a system for determining a PCF network element.
  • the system can include: a UDM network element, a first AMF network element, and a second AMF network element.
  • the UDM network element may be used to perform any of the aspects provided by the foregoing eighth aspect, where the first AMF network element may be used to perform the corresponding method provided by the foregoing ninth aspect.
  • an embodiment of the present application provides a UDM network element.
  • the UDM network element can be used to perform any of the methods provided in the eighth aspect above.
  • the UDM network element may specifically be the UDM network element described in the above eighth aspect.
  • the UDM network element may be divided into functional modules according to the method provided in the foregoing eighth aspect.
  • each functional module may be divided according to each function, or two or more functions may be integrated.
  • a processing module In a processing module.
  • the UDM network element can include a memory and a processor for storing a computer program that, when executed by the processor, causes any of the methods provided by the eighth aspect to be performed.
  • an embodiment of the present application provides an AMF network element.
  • the AMF network element can be used to perform any of the methods provided in the ninth aspect above.
  • the AMF network element may specifically be the first AMF network element described in the foregoing ninth aspect.
  • the AMF network element may be divided into functional modules according to the method provided in the foregoing ninth aspect.
  • each functional module may be divided according to each function, or two or more functions may be integrated.
  • a processing module In a processing module.
  • the AMF network element can include a memory and a processor for storing a computer program that, when executed by the processor, causes any of the methods provided by the ninth aspect to be performed.
  • the embodiment of the present application further provides a processing apparatus for implementing the functions of the foregoing apparatus (for example, the UDM network element provided in the eleventh aspect or the AMF network element provided in the twelfth aspect), the processing apparatus includes a processor.
  • the interface; the processing device may be a chip, the processor may be implemented by hardware or by software, when implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software, the The processor can be a general purpose processor implemented by reading software code stored in a memory that can be integrated into the processor and can be external to the processor.
  • the embodiment of the present application further provides a computer readable storage medium, where computer instructions are stored thereon, and when the computer instructions are run on a computer, causing the computer to perform any of the possible methods of the foregoing eighth to ninth aspects .
  • the embodiment of the present application also provides a computer program product, which when executed on a computer, causes any of the methods provided in the eighth to ninth aspects to be performed.
  • a chip system comprising a processor for a communication device to implement the functions involved in the above aspects, for example, generating, receiving, transmitting, or processing data involved in the above method And / or information.
  • the chip system further includes a memory for holding program instructions and data necessary for the communication device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the chip system can also be a device.
  • any of the device systems or computer storage media or computer program products provided above are used to perform the corresponding methods provided above, and therefore, the beneficial effects that can be achieved can be referred to the beneficial methods in the corresponding methods. The effect will not be described here.
  • FIG. 1 is a schematic structural diagram of a communication system to which the technical solution provided by the embodiment of the present application is applied;
  • FIG. 2 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart 1 of a method for configuring a policy of a UE according to an embodiment of the present disclosure
  • FIG. 4 is a schematic flowchart 2 of a method for configuring a policy of a UE according to an embodiment of the present disclosure
  • FIG. 5 is a schematic flowchart 3 of a method for configuring a policy of a UE according to an embodiment of the present disclosure
  • FIG. 6 is a schematic flowchart 4 of a method for configuring a policy of a UE according to an embodiment of the present disclosure
  • FIG. 7 is a schematic flowchart of a method for configuring a policy of a UE according to an embodiment of the present disclosure
  • FIG. 8 is a schematic flowchart 6 of a method for configuring a policy of a UE according to an embodiment of the present disclosure
  • FIG. 9 is a schematic flowchart diagram of a method for configuring a policy of a UE according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic flowchart 8 of a method for configuring a policy of a UE according to an embodiment of the present disclosure
  • FIG. 11 is a schematic flowchart nin of a method for configuring a policy of a UE according to an embodiment of the present disclosure
  • FIG. 12 is a schematic flowchart of a method for configuring a policy of a UE according to an embodiment of the present disclosure
  • FIG. 13 is a schematic flowchart of determining a PCF network element according to an embodiment of the present disclosure
  • FIG. 14 is a schematic structural diagram of a PCF network element according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of a first network element according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • FIG. 17 is a schematic structural diagram of a UDM network element according to an embodiment of the present disclosure.
  • FIG. 18 is a schematic structural diagram of an AMF network element according to an embodiment of the present disclosure.
  • the network architecture and the service scenario described in the embodiments of the present application are for the purpose of more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation of the technical solutions provided by the embodiments of the present application. It can be seen that, with the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.
  • the technical solution provided by the embodiment of the present application can be applied to a wireless communication system, which may be a 5G system or other communication systems in the future. Of course, it may also be a long term evolution (LTE) system, an LTE-Advanced (LTE-A) system, or the like.
  • LTE long term evolution
  • LTE-A LTE-Advanced
  • the wireless communication system is a 5G system.
  • FIG. 1 it is a schematic diagram of a communication system applicable to the technical solution provided by the embodiment of the present application.
  • the communication system may include: a UE 10, a radio access netwok (RAN) or an access network (AN) 20 (hereinafter referred to as (R) AN20), and a core network network. 30.
  • the core network network 30 includes: access and mobility management function (AMF) network element 301, PCF network element 302, unified data repository (UDR) network element 303, and unified data management (unified data) Management, UDM) Network element 304, etc.
  • the UE 10 communicates with the AMF network element 301 through a next generation (N) interface 1 (N1 for short).
  • (R) AN20 specifically the network element in (R) AN20, communicates with AMF network element 301 through an N2 interface (N2 for short), and AMF network element 301 communicates with PCF network element 302 through an N15 interface (N15 for short).
  • the PCF network element 302 communicates with the UDR network element 303 via an N25 interface (abbreviated as N25).
  • the AMF network element 301 communicates with the UDM network element 304 via an N8 interface (N8 for short).
  • N8 for short.
  • the connection between the foregoing network elements may be a wireless connection or a wired connection.
  • a solid line is illustrated in FIG.
  • the UE 10 a terminal, which may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem; may also include a subscriber unit, a cellular unit Cellular phone, smart phone, wireless data card, personal digital assistant (PDA) computer, tablet computer, wireless modem, handheld, laptop ( Laptop computer), cordless phone or wireless local loop (WLL) station, machine type communication (MTC) terminal, user equipment (UE), mobile station (mobile station) , MS), terminal device or relay user equipment.
  • the relay user equipment may be, for example, a 5G residential gateway (RG).
  • UEs 5G residential gateway
  • the network element in the (R) AN 20 may include, for example but not limited to, a base station, an evolved node base station (eNB), and a next generation base station (next generation node base) Station, gNB), new radio eNB, macro base station, micro base station, high frequency base station or transmission and reception point (TRP), non-3GPP access network (eg WiFi) and/or Non-3GPP interworking function (N3IWF) and other devices.
  • a base station an evolved node base station (eNB), and a next generation base station (next generation node base) Station
  • gNB next generation base station
  • new radio eNB macro base station
  • micro base station micro base station
  • TRP high frequency base station or transmission and reception point
  • N3IWF Non-3GPP interworking function
  • AMF network element 301 used for connection management, mobility management, registration management, access authentication and authorization, reachability management, and security context management.
  • the same UE 10 is served by an AMF network element 301.
  • two AMF network elements 301 can also serve the same UE 10 at the same time.
  • the AMF network element 301 serving the UE 10 can be replaced.
  • the process of selecting the AMF network element 301 can be performed by the (R) AN 20.
  • the AMF network element 301 may store policy information of the UE 10, for example, which policies are currently configured to be configured to the UE 10, and optionally, which policies need to be configured but not yet configured. Give UE10 and so on.
  • the policy information of the UE 10 stored by the AMF network element 301 may be updated as the network side configures the policy of the UE 10 to be updated.
  • the policy that the network side has been configured for the UE 10 may include the PCF network element 302 on the network side (including the PCF network element that has served the UE 10 and the PCF network element 302 currently serving the UE 10) configured for the UE.
  • the policy information of the UE 10 may be used to indicate at least one of a policy of the UE, such as an ANDSP, a URSP, and a wireless local area networks selection policy (WLANSP), and may be other policies. Limited.
  • PCF network element 302 used to formulate policies, provide policy control services, and obtain contract information related to policy decisions.
  • the policy that the PCF network element 302 needs to configure to the UE 10 may be updated.
  • the PCF network element 302 updates the policy that needs to be configured to the UE 10 according to the replacement of the location of the UE 10, the change of the subscription information of the UE 10, and the like.
  • the PCF network element 302 determines that the policy that needs to be configured to the UE 10 according to the current location of the UE 10 and the subscription information of the UE 10 is the policies 1 to 10, and at another time, the subscription information of the UE 10 is changed.
  • the policies that need to be configured to the UE 10 determined by the PCF network element 302 are policies 5-11.
  • the PCF network element 302 can configure the policy to the UE 10 multiple times and store the information of the policy that it has configured to the UE 10. For example, assuming that the policy that the PCF network element 302 needs to configure to the UE 10 is a policy 1 to 10, the PCF network element 302 can send the policies 1 to 3 to the UE 10 for the first time, and the second time to the UE. Send strategies 4 to 10, etc.
  • the PCF network element 302 that provides policy control services for the UE 10 may also be modified according to reasons such as replacement of the location where the UE 10 is located. Specifically, the process of selecting a PCF network element may be performed by the AMF network element 301.
  • the UDR network element 303 is configured to provide subscription data to the UDM network element 304 or obtain subscription data from the UDM network element 304; and provide policy data to the PCF network element 302, or obtain policy data from the PCF network element 302. Additionally, in some embodiments provided herein, the UDR network element 303 can store policy information for the UE 10.
  • UDM network element 304 used to process authentication information in the 3GPP authentication and key agreement mechanism, process user identity information, access authorization, registration and mobility management, subscription management, short message management, and the like.
  • the above 5G network may also include other network elements, such as a user plane function (UPF) network element, an authentication service function (AUSF) network element, and an application function (appllication function,
  • UPF user plane function
  • AUSF authentication service function
  • app function application function
  • the AF network element, the network exposure function (NEF), and the network slice selection function (NSSF) network element are not specifically limited in this embodiment of the present application.
  • the name of the interface between the network elements in FIG. 1 is only an example. In the specific implementation, the interface name may be other names, which is not specifically limited in this embodiment of the present application.
  • the AMF network element 301, the PCF network element 302, the UDR network element 303, and the UDM network element 304 of FIG. 1 are only one name, and the name is not limited to the device itself.
  • the network elements or entities corresponding to the AMF network element 301, the PCF network element 302, the UDR network element 303, and the UDM network element 304 may be other names in the 5G network and other network in the future. Specifically limited.
  • the AMF network element 301 may also be replaced with the AMF 301, etc., and a unified description is provided herein, and details are not described herein again.
  • each network element in FIG. 1 may be implemented by one device, or may be implemented by multiple devices. It can also be a function module in a device, which is not specifically limited in this embodiment of the present application. It can be understood that the above functions can be either a network component in a hardware device, a software function running on dedicated hardware, or a virtualization function instantiated on a platform (for example, a cloud platform).
  • FIG. 2 is a schematic diagram showing the hardware structure of a communication device according to an embodiment of the present application.
  • the communication device 400 includes at least one processor 401, a communication line 402, a memory 403, and at least one communication interface 404.
  • the processor 401 can be a general central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the execution of the program of the present application. integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • Communication line 402 can include a path for communicating information between the components described above.
  • Communication interface 404 using any type of transceiver, for communicating with other devices or communication networks, such as Ethernet, RAN, wireless local area networks (WLAN), and the like.
  • Ethernet Ethernet
  • RAN wireless local area networks
  • WLAN wireless local area networks
  • the memory 403 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions.
  • the dynamic storage device can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • the memory may be stand-alone and connected to the processor via communication line 402. The memory can also be integrated with the processor.
  • the memory 403 is used to store computer execution instructions for executing the solution of the present application, and is controlled by the processor 401 for execution.
  • the processor 401 is configured to execute computer executed instructions stored in the memory 403 to implement the methods provided by the following embodiments of the present application.
  • the computer-executed instructions in the embodiment of the present application may also be referred to as an application code, which is not specifically limited in this embodiment of the present application.
  • the processor 401 may include one or more CPUs, such as CPU0 and CPU1 in FIG.
  • communication device 400 can include multiple processors, such as processor 401 and processor 408 in FIG. Each of these processors can be a single-CPU processor or a multi-core processor.
  • processors herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.
  • the communication device 400 can also include an output device 405 and an input device 406.
  • Output device 405 is in communication with processor 401 and can display information in a variety of ways.
  • the output device 405 can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. Wait.
  • Input device 406 is in communication with processor 401 and can receive user input in a variety of ways.
  • input device 406 can be a mouse, keyboard, touch screen device, or sensing device, and the like.
  • the communication device 400 described above may be a general purpose device or a dedicated device.
  • the communication device 400 can be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or the like in FIG. device.
  • PDA personal digital assistant
  • the embodiment of the present application does not limit the type of the communication device 400.
  • FIG. 3 it is a method for configuring a policy of a UE according to an embodiment of the present application. This method can be applied to the communication system as shown in FIG. 1. The method comprises the following steps:
  • the first network element sends the policy information of the UE (such as the UE policy status information) to the PCF network element, and the PCF network element receives the policy information of the UE.
  • the policy information of the UE is used to indicate a policy of the UE.
  • the first network element may be a UDR network element or an AMF network element.
  • the method for configuring the policy of the UE provided in this embodiment may include, but is not limited to, being applied to the registration process or the PCF network element switching process.
  • the PCF network element handover procedure includes: a PCF network element handover procedure performed when the AMF network element is not switched; and a PCF network element handover procedure performed in the case of AMF network element handover.
  • the present application does not limit the execution of S101 under the trigger condition of the first network element.
  • the UDR network element may send the policy information of the UE to the PCF network element when receiving the request message (for example, the policy control acquisition request message) sent by the PCF network element.
  • the request message for example, the policy control acquisition request message
  • the AMF network element may send the policy information of the UE to the selected PCF network element after performing the PCF network element selection process. This application is not limited to this.
  • the PCF network element can provide services for one or more UEs at the same time, and the UE in S101 can be any UE served by the PCF network element.
  • a PCF network element that provides services for any UE can be replaced.
  • the policy information of the UE is used to indicate the policy of the current UE, that is, the policy that the current network side has configured to the UE, for example, may include one or more services for the UE, including providing services or providing services.
  • the first network element may store policy information of the UE.
  • the policy information of the UE that is stored by the first network element may be that the PCF network element synchronizes to the first network element when the configuration information is sent to the UE.
  • the application is not limited thereto.
  • For a specific implementation manner of the policy information of the PCF network element to the UE in the first network element refer to the following. For example, reference may be made to FIG. 4 to FIG. 6 below.
  • the specific manner of the policy information of the UE is not limited in this application. Here are a few possible ways:
  • the first step of the policy information of the UE may be: a correspondence between the identifier information of the UE and the identifier information of the policy that the network side has configured for the UE.
  • the policy that the network side needs to configure to the UE1 is the policies 1 to 3
  • the policies that need to be configured to the UE2 are the policies 1 to 4
  • the policies that need to be configured to the UE 3 are the policies 3 and 4
  • the network side has
  • the policy configured for UE1 is policy 1
  • the policy configured for UE2 is policy 1
  • the policy configured for UE3 is policy 3, 4
  • the policy information of the UE stored in the first network element may be as shown in Table 1. Show.
  • UE identification information Identification information of the policy that the network side has configured for the UE UE1 identification information
  • Strategy 1 identification information
  • UE2 identification information
  • Identification information of policy 1 and identification information of policy 2 UE3 identification information
  • the second method of the policy information of the UE may be specifically: the identifier information of the UE and the identifier information of the policy that the network side needs to configure to the UE, and whether each policy that the network side needs to configure to the UE is in the configured state.
  • a binary number "1" can be used to indicate that it is in a configured state
  • a binary number of "0" is used to indicate that it is in an unconfigured state.
  • the policy information of the UE stored by the first network element may be as shown in Table 2.
  • the third method, the policy information of the UE may be specifically represented by: a correspondence between the identifier information of the UE and the content of the policy that the network side has configured for the UE.
  • the policy information of the UE stored by the first network element may be as shown in Table 3.
  • UE identification information Content of the policy that has been configured for the UE on the network side UE1 identification information
  • the content of Strategy 1 UE2 identification information Content of Strategy 1, Content of Strategy 2 UE3 identification information Content of Strategy 3, Content of Strategy 4
  • the method information of the UE may be specifically: the identifier information of the UE and the content of the policy that the network side needs to configure to the UE, and whether each policy that the network side needs to configure to the UE is between the configured states. Correspondence relationship. For example, a binary number "1" can be used to indicate that it is in a configured state, and a binary number of "0" is used to indicate that it is in an unconfigured state.
  • the policy information of the UE stored by the first network element may be as shown in Table 4.
  • the policy information of the UE may be the identification information of the policy 1 and the identification information of the policy 2.
  • the policy information of the UE may specifically be the identifier information of the policies 1 to 2 and the state “11”, where the state “11” indicates that the policies 1 and 2 are configured; or, the UE’s
  • the policy information may be specifically: identifier information of policies 1 to 4 and status "1100", where state "1100” indicates that policies 1, 2 are configured, and policies 3, 4 are not configured.
  • the policy information of the UE may specifically be the content of the policy 1 and the content of the policy 2. If the policy information of the UE is as shown in Table 4, the policy information of the UE may specifically be the content of the policies 1 to 2 and the state “11”, where the state “11” indicates that the policies 1 and 2 are configured; or the policy of the UE. The information may specifically be: the contents of policies 1 to 4 and the status "1100", wherein the status "1100" indicates that the policies 1, 2 are configured, and the policies 3, 4 are not configured.
  • the policy information of the UE sent by the first network element to the PCF network element may be part or all of the policy information of the UE stored in the first network element.
  • the policy information of the UE may be the identifier information of the policy 1 as shown in Table 1. Other examples are not listed one by one.
  • Tables 1 to 4 are examples of policy information of the UE stored by the first network element, which does not constitute a limitation on the policy information of the UE stored by the first network element.
  • the AMF network element may refer to an AMF network element that provides services for the UE (ie, the time when S101 is performed) (for example, the new AMF network element in FIG. 9).
  • the source AMF network element in FIG. 10 if the AMF network element is not the AMF network element that provides the service for the UE for the first time, the AMF network element can receive the AMF network element that has served the UE before the current time. After the policy information of the UE (for example, the old AMF network element in FIG. 9 or the target AMF network element in FIG. 10) is transmitted, the UE's policy information is transmitted to the PCF network element.
  • the PCF network element stores policy information of the UE.
  • the present application does not limit how the PCF network element utilizes the stored UE policy information.
  • the PCF network element may manage the policy indicated by the policy information of the UE in a manner of managing a policy that the UE has configured to the UE. For example, the following S103 can be performed.
  • the PCF network element sends configuration information to the UE according to at least the policy information of the UE.
  • the PCF network element may further send configuration information to the UE according to at least one of replacement of the location of the UE and modification of the subscription information of the UE, and policy information of the UE.
  • the sending, by the PCF network element, the configuration information to the UE may include at least one of the following situations: 1
  • the PCF network element sends a new one or more policies to the UE.
  • the 2PCF network element instructs the UE to delete one or more policies indicated by the policy information of the UE in S101.
  • the 3PCF network element instructs the UE to modify the content of one or more policies indicated by the policy information of the UE in S101.
  • the PCF network element when the PCF network element performs the foregoing situation 1 or 2, the identifier information of the policy that has been configured to the UE on the network side is updated, that is, the policy information of the UE is updated. Therefore, the PCF network element can synchronize the identifier information of the updated policy to the first network element, so that the PCF network element that provides the service to the UE can obtain the latest UE policy information from the first network element. .
  • the PCF network element updates the policy that the network side has configured to the UE when performing the foregoing situations 1, 2 or 3, so that the PCF network element can synchronize the updated policy to the PCF network element. On the first network element, the PCF network element that helps the subsequent service to the UE can obtain the latest UE policy information from the first network element.
  • the policy information of the UE is described in the above manner or the second method. Further, the above-described case 1 will be described with reference to Fig. 4, and the above-described case 2 will be described with reference to Fig. 5, and the above-described case 3 will be described with reference to Fig. 6 .
  • FIG. 4 is a flowchart of a method for configuring a policy of a UE according to an embodiment of the present application. The method can include the following steps:
  • the PCF network element sends first configuration information to the UE, where the UE receives the first configuration information.
  • the first configuration information is used to configure the first policy to the UE, and the policy indicated by the policy information of the UE in S101 does not include the first policy.
  • the first configuration information may carry the content of the first policy, and optionally may also carry the identifier information of the first policy.
  • the PCF network element may determine that a new policy needs to be sent to the UE according to the information such as the location change of the UE and the change of the subscription information of the UE, so as to execute the foregoing S201.
  • the new policy refers to a policy other than the policy indicated by the policy information of the UE in S101.
  • the PCF network element may send the first configuration information to the UE via the AMF network element.
  • the UE may perform an operation corresponding to the first policy based on the first policy. For example, if the first policy is ANDSP, the UE may perform network access according to the access mode indicated by the first policy.
  • the PCF network element sends first update indication information to the first network element, where the first network element receives the first update indication information.
  • the first update indication information is used to indicate that the first network element updates the policy information of the UE that is stored by the first network element, and specifically, the first policy is marked as a policy that the network side has configured to the UE.
  • the first update indication information may carry the identifier information of the first policy.
  • the first network element marks, according to the first update indication information, the first policy as a policy that the network side has configured to the UE.
  • the policy indicated by the policy information of the UE in the S101 may be the policy 1 and the policy 2, that is, the policy that the network side has configured the UE is the policy 1 and the policy 2.
  • the first policy may be policy 3 or policy 4. If the first policy is the policy 3, the policy information of each UE stored in the first network element may be as shown in Table 5.
  • S201 to S202 and S203 to S204 is not limited.
  • S201 to S202 may be executed first, and then S203 to S204 may be executed, or S203 to S204 may be executed first, and then S201 to S202 may be executed. Simultaneously, S201 to S202 and S203 to S204 are executed.
  • the PCF network element may not send the policy indicated by the policy information of the UE to the UE.
  • the PCF network element needs to deliver all the policies to the UE, which can save air interface resources.
  • the PCF network element is configured with the first policy to the UE, that is, if the policy information of the UE is updated, the information of the updated policy is synchronized to the first network element, which is helpful for subsequent
  • the PCF network element that the UE provides the service can obtain the latest policy information of the UE from the first network element, thereby helping to save air interface resources.
  • FIG. 5 is a flowchart of a method for configuring a policy of a UE according to an embodiment of the present application. The method can include the following steps:
  • the PCF network element sends second configuration information to the UE, where the UE receives the second configuration information.
  • the second configuration information is used to indicate that the UE deletes the second policy, and the policy indicated by the policy information of the UE in S101 includes the second policy.
  • the policy deletion indication may carry the identifier information of the second policy.
  • the PCF network element may determine that one or some policies configured by the network side to the UE are no longer applicable according to information such as the location change of the UE and the subscription information of the UE, so that the second configuration information is sent to the UE.
  • the PCF network element may send the second configuration information to the UE via the AMF network element.
  • the second policy is a policy determined by the PCF network element that is no longer applicable to the UE.
  • the UE deletes the second policy according to the second configuration information. Specifically, the UE deletes the content of the second policy and the identifier information of the second policy according to the second configuration information.
  • the UE can no longer perform the operation corresponding to the second policy based on the second policy. For example, if the second policy is ANDSP, the UE can no longer perform network access according to the access mode indicated by the second policy.
  • the PCF network element sends the second update indication information to the first network element, where the first network element receives the second update indication information.
  • the second update indication information is used to indicate that the first network element updates the locally stored policy information of the UE, and specifically, the second policy is marked as a policy that the network side has deleted the configuration, that is, the network side is not marked. Configure the policy for the UE.
  • the second update indication information may carry the identification information of the second policy.
  • the first network element marks, according to the second update indication information, the second policy as a policy that is not configured to the UE by the network side.
  • the policy indicated by the policy information of the UE in the S101 may be the policy 1 and the policy 2, that is, the policy that the network side has configured the UE is the policy 1 and the policy 2.
  • the second policy may be policy 1 or policy 2.
  • the first policy is the policy 1
  • the policy information of each UE stored in the first network element may be as shown in Table 6.
  • UE identification information Identification information of the policy that the network side has configured for the UE UE1 identification information Strategy 1 identification information UE2 identification information Strategy 2 identification information UE3 identification information Identification information of policy 3 and identification information of policy 4
  • S301 to S302 and S303 to S304 is not limited.
  • S301 to S302 may be executed first, and then S303 to S304 may be executed, or S303 to S304 may be executed first, and then S301 to S302 may be executed. Simultaneously, S301 to S302 and S303 to S304 are executed.
  • S301-302 is performed first, in a possible implementation manner, after performing the receiving the second configuration information in S301, the UE, if it is determined that the second policy is locally stored, performs S302, and executes. S302 may be followed by S303 to S304. If it is determined that the second policy is not stored locally, the UE may send error indication information to the PCF network element, where the error indication information is used to indicate that the second policy is not stored in the UE. After receiving the error indication information, the PCF network element may not perform the following S303 to S304.
  • S303-S304 is performed first, in a possible implementation manner, after the first network receives the second indication information in S303, if it is determined that the second policy is locally marked as a policy that the network side has configured for the UE, Then execute S304. S301 to 302 may be performed after executing S304. If it is determined that the second policy is not marked as a policy that the network side has configured for the UE, the first network element may send error indication information to the PCF network element, where the error indication information is used to indicate the first network element. There is no second policy stored. After receiving the error indication information, the PCF network element may not perform S301 to S302.
  • both the UE and the first network may send error indication information to the PCF network element when it is determined that the second policy is not stored locally.
  • the implementation of any of the above-mentioned sending error indication information is helpful to ensure that the information of the policy that the UE and the network side configured in the first network element have configured to the UE are consistent under the control of the PCF network element, thereby helping to avoid The network side repeatedly configures the same policy to the UE, causing the problem of wasted air interface resources.
  • this concept can also be applied to the embodiment of the policy for configuring the UE as shown in FIG. 4, in which case the error indication information can be used to indicate that the first policy is stored locally, and the specific solution is not described in detail herein.
  • the PCF network element may manage the policy indicated by the policy information of the UE in S101. Specifically, one or more of the policies may be deleted, and if the policy information of the UE is updated due to deleting the one or more policies, the information of the updated policy is synchronized to the first On the network element, the PCF network element that can provide the service to the UE can obtain the latest policy information of the UE to the first network element, thereby helping to save air interface resources.
  • the update indication information sent by the PCF network element to the AMF network element (for example, the first update indication information or the first The second update indication information needs to be identified by the AMF network element, so that the AMF network element can update the stored policy information of the UE according to the update indication information.
  • the update indication information may be information other than the NAS container in the message communicated between the PCF network element and the AMF network element.
  • the first configuration information, the second configuration information, and the third configuration information sent by the PCF network element to the UE through the AMF network element may be transparently transmitted through the NAS.
  • FIG. 6 is a flowchart of a method for configuring a policy of a UE according to an embodiment of the present application. The method can include the following steps:
  • the PCF network element sends third configuration information to the UE, where the UE receives the third configuration information.
  • the third configuration information is used to indicate that the UE updates the third policy, and the policy indicated by the policy information of the UE in S101 includes the third policy. Updating the third policy specifically refers to updating the content of the third policy.
  • the third configuration information may carry the identifier information of the third policy and the information of the new third policy.
  • the information of the new third policy may be all information of the new third policy, or difference information between the new third policy and the third policy currently stored by the UE, and the like. This application does not limit this.
  • the PCF network element may determine that the content of one or some policies that have been configured for the UE on the network side needs to be changed according to information such as the change of the location of the UE and the change of the subscription information of the UE, so that the third configuration is sent to the UE. information.
  • the PCF network element may send the third configuration information to the UE via the AMF network element.
  • S402 The UE updates the currently stored third policy to a new third policy according to the third configuration information.
  • the policy indicated by the policy information of the UE in the S101 may be the policy 1 and the policy 2, that is, the policy that the network side has configured the UE is the policy 1 and the policy 2.
  • the third policy may be policy 1 or policy 2.
  • the PCF network element may manage the policy indicated by the policy information of the UE in S101. Specifically, the content of one or more of these policies may be updated. It can be understood that, based on the foregoing mode 1 or mode 2, the PCF network element does not need to synchronize the information of the updated policy to the first network element.
  • the method for configuring the UE's policy provided by the present application is described by using the policy as the granularity.
  • the UE may be configured with the policy group as the granularity.
  • a group consists of one or more policies.
  • the configuration information may include at least two of the first configuration information, the second configuration information, or the third configuration information, and the PCF network element needs to send the at least one of the first configuration information, the second configuration information, or the third configuration information to the UE.
  • the two types of configuration information, the different kinds of configuration information in the configuration information respectively indicate that the UE performs different operations.
  • FIG. 7 is a schematic diagram of the technical solution shown in FIG. 3 applied to the registration process. Specifically, the following steps are included:
  • S501 The UE sends a registration request message to the (R)AN.
  • the (R)AN After receiving the registration request message, the (R)AN performs an AMF network element selection process to determine an AMF network element (hereinafter referred to as a new AMF network element) serving the UE during the current registration process of the UE.
  • an AMF network element hereinafter referred to as a new AMF network element
  • the (R)AN may allocate a 5G temporary identifier to the UE. And, the (R)AN can determine, according to the 5G temporary identifier, whether the UE has accessed other AMF network elements (that is, the old AMF network element) before performing the registration process. If the old AMF network element has been accessed by the UE, the registration request message in S503 carries the identification information of the old AMF network element. If the new AMF network element and the old AMF network element are not the same network element, the S504 can be executed.
  • the new AMF network element is obtained by performing information interaction with the old AMF network element to obtain the UE context information, and then executing S506. If the new AMF network element and the old AMF network element are the same network element, S506 can be directly executed. If the UE does not access the old AMF network element, the new AMF network element can establish the UE context information according to the prior art process, thereby executing S506. The process of establishing the UE context information has been described in detail in the prior art, and details are not described herein again.
  • the new AMF network element sends a context delivery request message to the old AMF network element.
  • the context delivery request message carries the identifier information of the UE, and is used to request the UE context information.
  • the identification information of the UE may be the above 5G temporary identifier.
  • the old AMF network element sends a context delivery response message to the new AMF network element.
  • the context delivery response message carries the UE context information.
  • the new AMF network element performs a PCF network element selection process to determine a PCF network element that provides services for the UE during the current registration process of the UE.
  • the new AMF network element sends a policy control acquisition request message to the PCF network element, where the policy control acquisition request message is used to request the PCF network element to send a policy to the UE.
  • the PCF network element sends a first request message to the UDR network element, where the first request message is used to request policy information of the UE.
  • the UDR network element sends a first response message to the PCF network element, where the first response message carries the policy information of the UE, and the policy information of the UE is used to indicate the policy of the UE.
  • the PCF network element is the first PCF network element to which the UE is connected, the network side has not configured any policy for the UE.
  • the UDR network element does not store information about the policy that the network side has configured for the UE. Therefore, The policy indicated by the policy information of the UE in S509 is empty.
  • the PCF network element can configure policies to the UE based on methods provided in the prior art.
  • the network side may have configured one or some policies for the UE.
  • the UDR network element may store a policy that the network side has configured for the UE. Information, therefore, the policy indicated by the UE's policy information in S509 is not empty.
  • the network side may perform the method of configuring the UE as shown in FIG. 5, and the UDR network element has no storage network side.
  • the PCF network element can configure policies to the UE based on methods provided in the prior art.
  • the UE's policy information may be stored in the UDR network element regardless of whether the UE is registered.
  • the method may further include: the PCF network element storing policy information of the UE. Subsequently, how the PCF network element utilizes the UE's policy information can refer to FIG. 4 to FIG. 6 above.
  • the PCF network element may carry at least one of the foregoing first configuration information and the second configuration information in the policy control acquisition response message and the registration response message when performing the following S510 and S511.
  • the PCF network element may perform the above-described FIG. 4 to FIG. 6 when the location change of the UE or the change of the subscription information of the UE is performed after the execution of S510, and the present application does not limit this.
  • the PCF network element sends a policy control acquisition response message to the new AMF network element.
  • the new AMF network element sends a registration response message to the UE.
  • the registration process shown in FIG. 7 only some steps related to the technical solution shown in FIG. 3 are illustrated, so as to illustrate an application scenario of the technical solution shown in FIG. 3 .
  • the registration process may also include an AUSF network element selection process, an authentication process, and the like.
  • FIG. 8 it is a schematic diagram of the technical solution shown in FIG. 3 applied to the AMF network element switching process. Specifically, the following steps are included:
  • the (R)AN determines that, when the UE needs to switch the AMF network element, the handover request message is sent to the AMF network element (ie, the source AMF network element) that is currently serving the UE.
  • the handover request message may carry the identifier information of the UE, and is used to request to switch the AMF network element.
  • the source AMF network element After receiving the handover request message, the source AMF network element performs an AMF network element selection process to select the target AMF network element.
  • the source AMF network element sends the UE context information to the target AMF network element.
  • the target AMF network element After receiving the UE context information, the target AMF network element performs a PCF network element selection process to select the target PCF network element.
  • the source PCF network element and the target PCF network element may be the same or different. If the source PCF network element is different from the target PCF network element, the following S605 is performed.
  • the target AMF network element sends a policy control acquisition request message to the target PCF network element.
  • the policy control acquisition request message is used to request to send a policy to the UE.
  • the target PCF network element sends a first request message to the UDR network element, where the first request message is used to request policy information of the UE.
  • the UDR network element sends a first response message to the target PCF network element, where the first response message carries the policy information of the UE, and the policy information of the UE is used to indicate the policy of the UE.
  • the PCF network element sends a policy control acquisition response message to the target AMF network element.
  • the policy control acquisition response message may carry one or more first policies, and the description about the first policy may refer to the above.
  • the policy control acquisition response message may not carry the policy, but after the end of the AMF network element handover procedure, the PCF network element performs the above FIG. 4 in the case of determining the location change of the UE or the change of the subscription information of the UE. ⁇ Figure 6, this application does not limit this.
  • the AMF network element switching process shown in FIG. 8 only some steps related to the technical solution shown in FIG. 3 are illustrated, so that an application scenario of the technical solution shown in FIG. 3 is illustrated.
  • the AMF network element switching process may also include other steps. These steps have been described in detail in the prior art and will not be described again here.
  • FIG. 9 is a schematic diagram of the technical solution shown in FIG. 3 applied to the registration process. Specifically, the following steps are included:
  • S701 to S703 Reference may be made to the above S501 to S503, but the present application is not limited thereto.
  • the new AMF network element sends a context delivery request message to the old AMF network element.
  • the context delivery request message carries the identifier information of the UE, and is used to request the UE context information.
  • the context transfer request message can also be used to request policy information for the UE.
  • the old AMF network element sends a context delivery response message to the new AMF network element.
  • the context delivery response message carries the UE context information and the policy information of the UE, where the policy information of the UE is used to indicate the policy of the UE.
  • the new AMF network element performs a PCF network element selection process to determine a PCF network element that provides services for the UE during the current registration process of the UE.
  • the new AMF network element sends the policy information of the UE to the PCF network element.
  • the method may further include: the PCF network element storing policy information of the UE. Subsequently, how the PCF network element utilizes the UE's policy information can refer to FIG. 4 to FIG. 6 above.
  • the PCF network element may carry at least one of the foregoing first configuration information and the second configuration information in the policy control acquisition response message and the registration response message when performing the following S709 and S710.
  • the PCF network element may perform the above-described FIG. 4 to FIG. 6 when the location change of the UE or the change of the subscription information of the UE is performed after the execution of S510, and the present application does not limit this.
  • the new AMF network element sends a policy control acquisition request message to the PCF network element, where the policy control acquisition request message is used to request to send a policy to the UE.
  • the policy information of the UE in S707 may be sent by the new AMF network element to the PCF network element in the policy control acquisition request message in S708.
  • the policy information of the UE in S707 and the control policy acquisition request in S708 are two messages designed independently. In this case, the order of execution of S707 and S708 is not limited in the present application.
  • the PCF network element sends a policy control acquisition response message to the new AMF network element.
  • the new AMF network element sends a registration response message to the UE.
  • the registration process may also include an AUSF network element selection process, an authentication process, and the like.
  • FIG. 10 it is a schematic diagram of the technical solution shown in FIG. 3 applied to the AMF network element switching process. Specifically, the following steps are included:
  • S801 to S802 Reference may be made to the above S601 to S602. Of course, the present application is not limited thereto.
  • the source AMF network element sends the UE context information and the policy information of the UE to the target AMF network element, where the policy information of the UE is used to indicate the policy of the UE.
  • the UE context information and the policy information of the UE may be carried in the same message or may be carried in different messages.
  • the target AMF network element After receiving the UE context information and the policy information of the UE, the target AMF network element performs a PCF network element selection process to select the target PCF network element.
  • the source PCF network element and the target PCF network element may be the same or different. If the source PCF network element is different from the target PCF network element, the following S805 is performed.
  • the target AMF network element sends the policy information of the UE to the target PCF network element.
  • the target AMF network element sends a policy control acquisition request message to the target PCF network element.
  • the policy control acquisition request message is used to request the network side to deliver a policy to the UE.
  • the policy information of the UE in S805 may be sent by the target AMF network element to the target PCF network element in the policy control acquisition request message in S806.
  • the policy information of the UE in S805 and the control policy acquisition request in S806 are two messages designed independently. In this case, the order of execution of S805 and S806 is not limited in the present application.
  • the target PCF network element sends a policy control acquisition response message to the target AMF network element.
  • the AMF network element switching process shown in FIG. 10 only some steps related to the technical solution shown in FIG. 3 are illustrated, and an application scenario of the technical solution shown in FIG. 3 is illustrated. In actual implementation, the AMF network element switching process may also include other steps. These steps have been described in detail in the prior art and will not be described again here.
  • the policy of considering the network side configuration of the UE to the UE may be lost.
  • the UE may lose the policy received before replacing the SIM card due to the replacement of the subscriber identity module (SIM) card.
  • SIM subscriber identity module
  • the UE sends the policy storage state information to the PCF network element, where the UE receives the policy storage state information.
  • the policy storage state information is used to indicate whether the UE stores the PCF policy.
  • the PCF policy may be the policy indicated by the policy information of the UE described above. For a description of the policy information of the UE, reference may be made to the above.
  • the trigger condition of S901 is not limited in this embodiment.
  • policy status information may be carried in a registration request message.
  • the UE may send the policy storage state information to the PCF network element after receiving the configuration information sent by the PCF network element.
  • the configuration information sent by the UE to the PCF network element may include, but is not limited to, any one of the foregoing methods in FIG. 4 to FIG. 6.
  • the PCF network element may send the policy indicated by the policy information of the UE in S101 to the UE in S902.
  • the policy indicated by the policy information of the UE may be sent in one or more times.
  • the PCF network element may send all the policies that the network side needs to configure to the UE to the UE. Among them, all the policies can be sent one or more times.
  • any policy sent by the PCF network element to the UE may be obtained by the PCF network element to the UDR network element.
  • the specific acquisition process has been described in detail in the prior art, and details are not described herein again.
  • the policy storage state information is carried in the registration request message as an example. As shown in FIG. 12, the technical solution shown in FIG. 11 is applied to the registration process. Specifically, the following steps are included:
  • the UE sends a registration request message to the (R) AN.
  • the registration request message carries policy storage state information.
  • the policy storage state information is used to indicate whether the UE stores a PCF policy.
  • the policy storage state information is used to indicate that the UE does not store the PCF policy. In this case, the UE may carry the policy state information in the registration request message without storing the PCF policy. In another possible implementation manner, the policy storage state information is used to indicate that the UE stores a PCF policy. In this case, the UE may carry the policy state information in the registration request message if the PCF policy is stored. In another possible implementation manner, the policy storage state information may indicate that the UE stores the PCF policy by using the carried information, or indicates that the PCF policy is not stored in the UE, for example, but may be limited to, by carrying a binary number. 1 ” indicates that the UE stores a PCF policy, and by carrying a binary number “0”, indicates that the PCF policy is not stored in the UE. Of course, this application is not limited to this.
  • the (R)AN performs an AMF network element selection process to determine a new AMF network element.
  • the (R)AN sends a registration request message to the new AMF network element, where the registration request message carries policy storage state information.
  • S1004 Specifically, refer to the above S504 to S509, or the above S704 to S708.
  • the new AMF network element has sent a policy control acquisition request message to the PCF network element, and the policy control acquisition request message carries the policy storage state information; and the PCF network element has acquired the policy information of the UE, and the policy information of the UE A policy used to indicate the UE.
  • the PCF network element determines that the policy that needs to be sent to the UE is all policies that need to be configured to the UE. All policies can be sent one or more times. If the policy status information indicates that the UE stores the PCF policy, the PCF network element determines that the policy that needs to be sent to the UE is the policy indicated by the policy information of the UE in S101, among all the policies that need to be configured to the UE. For an external policy, the process for the PCF network element to configure the UE to send the policy to the UE may refer to FIG. 4 , and details are not described herein again. In addition, in a case where the policy state information indicates that the UE stores the PCF policy, the PCF network element may further send configuration information to the UE according to the technical solution described in any of the foregoing FIG. 5 to FIG.
  • the PCF policies determined in the process of executing S1004 are Policy 1 and Policy 2.
  • the policy that the PCF network element determines to send to the UE is the policies 1 to 4.
  • the policy that the PCF network element determines to be sent to the UE is the policy 3 to 4, and may be sent to the UE according to the technical solution shown in FIG. 5 to FIG. Configuration information.
  • S1006 The PCF network element sends a policy control acquisition response message to the new AMF network element.
  • the new AMF network element sends a registration response message to the UE.
  • the policy control acquisition response message in S1006 and the registration response message in S1007 carry a PCF network element to determine some or all of the policies that need to be sent to the UE.
  • this application is not limited to this.
  • FIG. 13 it is a method for determining a PCF network element provided by an embodiment of the present application. This method can be applied to the communication system as shown in FIG. 1. The method can include the following steps:
  • the first AMF network element sends a query request message to the UDM network element, and the UDM network element receives the query request message.
  • the query request message queries the second AMF network element for the identification information of the PCF network element (hereinafter referred to as the first PCF network element) selected by the UE.
  • the query request message may carry the identification information of the UE.
  • the first AMF network element may be an AMF network element currently serving the UE. Generally, the first AMF network element may execute S1102 when it is determined that the PCF network element selection process needs to be performed.
  • the second AMF network element and the first AMF network element may be the same network element, or may not be the same network element.
  • the first AMF network element may be an AMF network element currently serving the UE, and the second AMF network element may be The AMF network element that the UE accesses first.
  • the first AMF network element is the new AMF network element, and the second AMF network element is the old AMF network element.
  • the first AMF network element may be the foregoing target AMF network element, and the second AMF network element is the foregoing source AMF network element.
  • the first AMF network element and the second AMF network element may be AMF network elements that provide services for the UE at the same time, for example, two AMF network elements that simultaneously serve the UE in the roaming scenario.
  • the application scenario may be: the first AMF network element may be the AMF network element selected by the UE when the UE is powered on (R) AN, and the second AMF.
  • the network element may be an AMF network element selected by the (R)AN for the UE before the UE is shut down.
  • the AMF network elements selected twice are the same. Since the stored policy is not deleted after the UE is shut down, the previous policy issued by the PCF still exists. Therefore, when the UE selects the same PCF network element for the UE after the UE is powered on, the PCF network element can continue to maintain the policy that has been delivered to the UE.
  • the UDM network element sends the identifier information of the first PCF network element to the first AMF network element according to the query request message, where the first AMF network element receives the identifier information of the first PCF network element.
  • the UDM network element stores the identification information of the PCF network element selected by the AMF network element for the UE.
  • the identification information of the PCF network elements stored by the UDM network element may be reported by the AMF network element to the UDM network element after the PCF network element selection process is performed.
  • the UDM network element may determine the identification information of the first PCF network element by querying the identification information of the PCF network element selected by the AMF network element that is stored by the UE after the query request message is received.
  • the UDM network element may query the second AMF network element network element for the identifier information of the first PCF network element. It can be understood that, after the (R)AN performs the AMF network element selection process, the selected AMF network element is registered to the UDM network element. Therefore, for the UDM network element, the identifier of the second AMF network element can be known. Information, so that the second AMF network element can be queried for the identification information of the first PCF network element.
  • the first AMF network element After receiving the identifier information of the first PCF network element, the first AMF network element selects the first PCF network element as the PCF network element that provides the service for the UE.
  • the first AMF network element queries the UDM network element for the second AMF network element to be the identification information of the PCF network element selected by the UE, so that the PCF network element is used as the first AMF network element.
  • the PCF network element selected by the UE In this way, the PCF network elements selected by the two AMF network elements that serve the same UE in succession (or at the same time) may be different, or the PCF network elements selected by the same AMF network element at different times may be different.
  • the policies that cause the two PCF network elements to be configured to the UE are different, so that the UE does not know which policies to execute.
  • the first AMF network element may need to re-select the PCF network element for the UE, in accordance with the foregoing implementation manner 1, according to the replacement of the UE location, the change of the subscription information of the UE, and the like.
  • the method can also include the following steps:
  • the first AMF network element reselects the second PCF network element as a PCF network element that provides services for the UE.
  • the first AMF network element sends the identifier information of the second PCF network element to the UDM network element, so that the UDM network element updates the PCF network element selected by the first AMF network element to serve the UE.
  • the UDM network element updates the PCF network element selected by the first AMF network element to provide the service for the UE.
  • the optional embodiment helps the AMF network element that provides the service for the UE to obtain the latest identification information of the PCF network element that provides the service for the UE from the UDM network element, thereby helping to avoid the sequence ( Or the PCF network elements selected by the different AMF network elements serving the same UE are different, or the PCF network elements selected by the same AMF network element are different at different times, thereby causing the two PCF network elements to be configured to the UE.
  • the strategy is different, so that the UE does not know which policies to execute.
  • An apparatus for configuring a policy of a UE including a PCF network element, a first network element, a UE, and the like), or a device for determining a PCF network element (including a UDR network element or a first AMF network element) may be used in the foregoing embodiment of the present application.
  • the division of function modules is performed.
  • each function module can be divided for each function, or two or more functions can be integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 14 is a schematic structural diagram of a PCF network element provided by an embodiment of the present application.
  • the PCF network element 14 shown in FIG. 14 may be used to perform the steps performed by the corresponding PCF network element in the method for configuring the policy of any of the UEs provided above.
  • the PCF network element 14 may include a receiving unit 1401 and a transmitting unit 1402.
  • the receiving unit 1401 is configured to receive policy information of the UE sent by the first network element, where the policy information of the UE is used to indicate a policy of the UE.
  • the sending unit 1402 is configured to send configuration information to the UE according to at least the policy information of the UE, where the configuration information is used to indicate that the UE updates the policy of the UE.
  • the first network element may be a UDR network element or an AMF network element.
  • the policy information of the UE is used to indicate at least one of URSP, ANDSP, and WLANSP of the UE.
  • the policy information may further include transmission status information, where the transmission status information is used to indicate whether the policy indicated by the policy information has been transmitted to the UE.
  • PCF network element 14 can be a PCF network element in any of Figures 3-6.
  • the receiving unit 1401 may be configured to perform the receiving step in S101.
  • the transmitting unit 1402 is operative to perform the transmitting step in S103.
  • the PCF network element 14 may be the PCF network element in FIG. 7, and the first network element may be the UDR network element in FIG.
  • the receiving unit 1401 can be configured to perform the receiving step in S509.
  • the transmitting unit 1402 can be configured to perform the transmitting step in S510.
  • the PCF network element 14 may be the target PCF network element in FIG. 8, and the first network element may be the UDR network element in FIG.
  • the receiving unit 1401 may be configured to perform the receiving step in S607.
  • the transmitting unit 1402 can be configured to perform the transmitting step in S608.
  • the PCF network element 14 may be the PCF network element in FIG. 9, and the first network element may be the new AMF network element in FIG.
  • the receiving unit 1401 may be configured to perform the receiving step in S707.
  • the transmitting unit 1402 can be configured to perform the transmitting step in S709.
  • the PCF network element 14 can be the target PCF network element in FIG. 10
  • the first network element can be the target AMF network element in FIG.
  • the receiving unit 1401 can be configured to perform the receiving step in S805.
  • the transmitting unit 1402 can be configured to perform the transmitting step in S807.
  • the configuration information includes the first configuration information
  • the sending unit 1402 is specifically configured to: send the first configuration information to the UE, where the first configuration information is used to indicate the first policy of the UE, and the policy information of the UE The indicated policy does not include the first policy.
  • the transmitting unit 1402 can be configured to perform the transmitting step in S201.
  • the configuration information includes the second configuration information
  • the sending unit 1402 is specifically configured to: send the second configuration information to the UE, where the second configuration information is used to indicate that the UE deletes the second policy, and the policy information of the UE
  • the indicated policy includes a second policy.
  • the transmitting unit 1402 can be configured to perform the transmitting step in S301.
  • the configuration information includes the third configuration information
  • the sending unit 1402 is specifically configured to: send the third configuration information to the UE, where the third configuration information is used to indicate that the UE updates the third policy, and the policy information of the UE
  • the indicated policy includes a third policy.
  • the transmitting unit 1402 can be configured to perform the transmitting step in S401.
  • the sending unit 1402 is further configured to send the update indication information to the first network element, where the update indication information includes at least one of the configuration information and the configuration information identifier, where the configuration information identifier is used to indicate the configuration information.
  • the update indication information may be the first update indication information in FIG. 4
  • the configuration information may be the first configuration information in FIG.
  • the transmitting unit 1402 may be configured to perform the transmitting step in S203.
  • the update indication information may be the second update indication information in FIG. 5
  • the configuration information may be the second configuration information in FIG.
  • the transmitting unit 1402 can be configured to perform the transmitting step in S303.
  • the receiving unit 1401 is further configured to receive the policy storage state information sent by the UE, where the policy storage state information is used to indicate whether the UE stores the PCF policy.
  • the sending unit 1402 may be further configured to: if the policy status information indicates that the UE does not store the PCF policy, send the PCF policy to the UE.
  • the receiving unit 1401 may be configured to perform the receiving step in S901.
  • the transmitting unit 1402 can be configured to perform the transmitting step in S902.
  • the receiving unit 1401 is specifically configured to: receive a policy control acquiring request message sent by the AMF network element; the policy control acquiring request message carries policy storage state information, and after receiving the registration request message sent by the UE, the AMF network element Send a policy control acquisition request message to the PCF network element.
  • the receiving unit 1401 and the transmitting unit 1402 may correspond to the communication interface 404 in FIG.
  • FIG. 15 is a schematic structural diagram of a first network element according to an embodiment of the present application.
  • the first network element 15 shown in FIG. 15 may be used to perform the steps performed by the corresponding first network element in the method for configuring the policy of any of the UEs provided above.
  • the first network element 15 may include: a sending unit 1501.
  • the sending unit 1501 is configured to send the policy information of the UE to the PCF network element, where the policy information of the UE is used to indicate the policy of the UE, and the PCF network element is configured to send configuration information to the UE according to the policy information of the UE.
  • the configuration information is used to indicate that the UE updates the policy of the UE.
  • the first network element 15 may be a UDR network element or an AMF network element.
  • the policy information of the UE is used to indicate at least one of URSP, ANDSP, and WLANSP of the UE.
  • the first network element 15 can be the first network element in any of Figures 3-6.
  • the PCF network element may be a PCF network element in any of Figures 3-6.
  • the transmitting unit 1501 can be configured to perform the transmitting step in S101.
  • the first network element 15 may be the UDR network element in FIG. 7 and the PCF network element may be the PCF network element in FIG.
  • the transmitting unit 1501 can be configured to perform the transmitting step in S509.
  • the first network element 15 may be the UDR network element in FIG. 8 and the PCF network element may be the target PCF network element in FIG.
  • the transmitting unit 1501 can be configured to perform the transmitting step in S607.
  • the first network element 15 may be the new AMF network element in FIG. 9, and the PCF network element may be the PCF network element in FIG.
  • the transmitting unit 1501 can be configured to perform the transmitting step in S707.
  • the first network element 15 may be the new AMF network element in FIG. 10
  • the PCF network element may be the target PCF network element in FIG.
  • the transmitting unit 1501 can be configured to perform the transmitting step in S805.
  • the first network element 15 may further include: a receiving unit 1502 and a processing unit 1503.
  • the receiving unit 1502 is configured to receive the update indication information sent by the PCF network element, where the update indication information includes at least one of the configuration information and the configuration information identifier, where the configuration information identifier is used to indicate the configuration information.
  • the processing unit 1503 is configured to update policy information of the UE according to the update indication information.
  • the update indication information may be the first update indication information in FIG. 4
  • the configuration information may be the first configuration information in FIG.
  • the receiving unit 1502 can be configured to perform the receiving step in S203.
  • the processing unit 1503 can be configured to execute S204.
  • the update indication information may be the second update indication information in FIG. 5
  • the configuration information may be the second configuration information in FIG.
  • the receiving unit 1502 can be configured to perform the receiving step in S303.
  • the processing unit 1503 can be configured to execute S304.
  • the first network element 15 is a first AMF network element
  • the receiving unit 1502 is further configured to receive policy information of the UE sent by the second AMF network element, where the second AMF network element is that the UE is connected to the first AMF.
  • AMF network element connected before the NE the first AMF network element may be a new AMF network element, and the second AMF network element may be an old AMF network element.
  • the receiving unit 1502 can be configured to perform the receiving step in S705.
  • the first AMF network element may be a target AMF network element
  • the second AMF network element may be a source AMF network element.
  • the receiving unit 1502 can be configured to perform the receiving step in S803.
  • the receiving unit 1502 is specifically configured to receive the first message sent by the second AMF network element, where the first message includes context information of the UE and policy information of the UE.
  • the first message may be a UE context delivery response message.
  • the first message may be the message that carries the UE context information in S803 and the policy information of the UE in an implementation manner of the same message.
  • the foregoing sending unit 1501 and receiving unit 1502 may correspond to the communication interface 404 in FIG. 2
  • the processing unit 1503 may correspond to the processor 401 or the processor 408 in FIG.
  • FIG. 16 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • the terminal device 16 shown in FIG. 16 may be used to perform the steps performed by the UE in the method for configuring the policy of any of the terminal devices provided above.
  • the terminal device 16 may also be a chip.
  • the terminal device 16 may include a transmitting unit 1601 and a receiving unit 1602.
  • the sending unit 1601 is configured to send the policy storage state information to the PCF network element, where the policy storage state information is used to indicate whether the terminal device stores the PCF policy, to indicate that the PCF network element indicates the terminal device in the policy storage state information. When the PCF policy is not stored, the PCF policy is sent to the terminal device.
  • the receiving unit 1602 is configured to receive a PCF policy sent by the PCF network element.
  • the transmitting unit 1601 can be configured to perform the transmitting step in S901.
  • the receiving unit 1602 can be configured to perform the receiving step in S902.
  • the sending unit 1601 is specifically configured to: send a registration request message to the AMF network element, where the registration request message carries policy storage state information; the registration request message is used to instruct the AMF network element to send a policy control acquisition request message to the PCF network element.
  • the policy control acquisition request message carries policy storage state information.
  • the sending unit 1601 is specifically configured to: after the receiving unit 1602 receives the configuration information sent by the PCF network element, send the policy storage state information to the PCF network element; the configuration information is that the PCF network element is based at least according to the policy of the terminal device.
  • the configuration information sent by the information to the terminal device, the configuration information being used to instruct the terminal device to update the policy of the terminal device.
  • the above-described transmitting unit 1601 and receiving unit 1602 may correspond to the communication interface 404 in FIG.
  • FIG. 17 is a schematic structural diagram of a UDM network element provided by an embodiment of the present application.
  • the UDM network element 17 shown in Figure 17 can be used to perform the steps performed by the UDM network element in any of the methods for determining PCF network elements provided above.
  • the UDM network element 17 can include a transmitting unit 1701.
  • the sending unit 1701 is configured to send the identifier information of the first PCF network element to the first AMF network element, to instruct the first AMF network element to select the first PCF network element as the PCF network element serving the UE.
  • the first PCF network element is an AMF network element selected by the second AMF network element to provide services for the UE.
  • the first AMF network element and the second AMF network element may be the same network element, or may be different network elements.
  • the transmitting unit 1701 can be configured to perform the transmitting step in S1102.
  • the UDM network element can include a receiving unit 1702.
  • the receiving unit 1702 is configured to receive a query request message sent by the first AMF network element.
  • the sending unit 1701 is specifically configured to send a query response message to the first AMF network element, where the query response message carries the identifier information of the first PCF network element.
  • the receiving unit 1702 can be configured to perform the receiving step in S1101.
  • the sending unit 1701 is further configured to: after the receiving unit 1702 receives the query request message, send the query request message to the second AMF network element to query the identifier information of the first PCF network element.
  • the receiving unit 1702 may be further configured to receive the identifier information of the first PCF network element that is sent by the second AMF network element.
  • the identification information of the PCF network element that the AMF network element selects for the UE to serve the UE may be stored in the UDM network element.
  • the AMF network element may report the selected PCF network element to the UDM after performing the PCF network element selection process.
  • the UDM network element may send the identifier of the first PCF network element to the first AMF network element by querying the locally stored information.
  • the receiving unit 1702 is further configured to receive the identifier information of the second PCF network element, where the second PCF network element is a PCF network element that is reselected by the first AMF network element to provide services for the UE.
  • the UDM network element 17 may further include a processing unit 1703, configured to update the identification information of the PCF network element that is selected by the first AMF network element to serve the UE from the identification information of the first PCF network element to the second PCF network element. Identification information.
  • receiving unit 1702 can be used to perform the receiving step in S1105.
  • Processing unit 1703 can be used to execute S1106.
  • the above-described transmitting unit 1701 and receiving unit 1702 may correspond to the communication interface 404 in FIG.
  • Processing unit 1703 may correspond to processor 401 or processor 408 in FIG.
  • FIG. 18 is a schematic structural diagram of an AMF network element provided by an embodiment of the present application.
  • the AMF network element 18 shown in FIG. 18 can be used to perform the steps performed by the first AMF network element in any of the methods for determining a PCF network element provided above.
  • the AMF network element 18 can include a receiving unit 1801 and a processing unit 1802.
  • the receiving unit 1801 is configured to receive the identifier information of the first PCF network element that is sent by the UDM network element, where the first PCF network element is an AMF network element selected by the second AMF network element to serve the UE.
  • the AMF network element 18 and the second AMF network element may be the same network element or different network elements.
  • the processing unit 1802 can be configured to select the first PCF network element as a PCF network element that provides services for the UE.
  • the receiving unit 1801 can be used to perform the receiving step in S1102.
  • the processing unit 1802 can be configured to execute S1103.
  • the AMF network element 18 may further include a sending unit 1803, configured to send a query request message to the UDM network element, where the query request message is used to request the identifier information of the first PCF network element.
  • the receiving unit 1801 is specifically configured to: receive the query response message sent by the UDM network element, where the query response message carries the identifier information of the first PCF network element.
  • the transmitting unit 1803 can be configured to perform the transmitting step in S1101.
  • the processing unit 1802 may be further configured to: reselect a second PCF network element that provides service for the UE.
  • the sending unit 1803 may be further configured to send the identifier information of the second PCF network element to the UDM network element, to instruct the UDM network element to update the PCF network element selected by the AMF network element 18 to serve the UE.
  • processing unit 1802 can be used to execute S1104.
  • the transmitting unit 1803 can be configured to perform the transmitting step in S1105.
  • the device provided by the embodiment of the present application (for example, the PCF network element 14, the first network element 15, the UE 16, the UDM network element 17, or the AMF network element 18) can be used to perform the foregoing corresponding method, so that the technology can be obtained.
  • the PCF network element 14 the first network element 15, the UE 16, the UDM network element 17, or the AMF network element 18
  • the device can be used to perform the foregoing corresponding method, so that the technology can be obtained.
  • the foregoing method embodiments for example, the PCF network element 14, the first network element 15, the UE 16, the UDM network element 17, or the AMF network element 18
  • the embodiment of the present application further provides a system for configuring a policy of a UE, where the system may include a first network element, a PCF network element, and a UE.
  • the first network element is configured to send the policy information of the UE to the PCF network element; the policy information of the UE is used to indicate the policy of the UE.
  • the PCF network element is configured to receive the policy information of the UE, and send the configuration information to the UE according to the policy information of the UE.
  • the configuration information is used to indicate that the UE updates the policy of the UE.
  • the UE is configured to receive configuration information, and update a policy of the UE according to the configuration information.
  • the PCF network element is configured to send the configuration information to the UE according to the policy information of the UE, where the configuration information includes the first configuration information, where the PCF network element is configured to send the first configuration information to the UE.
  • the first configuration information is used to indicate the first policy of the UE, and the policy indicated by the policy information of the UE does not include the first policy.
  • the PCF network element is configured to send the configuration information to the UE according to the policy information of the UE, where the configuration information includes the second configuration information, where the PCF network element is configured to send the second configuration information to the UE.
  • the second configuration information is used to indicate that the UE deletes the second policy, and the policy indicated by the policy information of the UE includes the second policy.
  • the PCF network element is configured to send the configuration information to the UE according to the policy information of the UE, where the configuration information includes the third configuration information, where the PCF network element is configured to send the third configuration information to the UE.
  • the third configuration information is used to indicate that the UE updates the third policy, and the policy indicated by the policy information of the UE includes the third policy.
  • the PCF network element may be further configured to send the update indication information to the first network element, where the update indication information includes at least one of the configuration information and the configuration information identifier, where the configuration information identifier is used to indicate the configuration information.
  • the first network element may be further configured to receive the update indication information, and update the policy information of the UE according to the update indication information.
  • the UE may be further configured to send policy storage state information to the PCF network element, where the policy storage state information is used to indicate whether the UE stores the PCF policy.
  • the PCF network element may be further configured to receive the policy storage state information, and if the policy state information indicates that the UE does not store the PCF policy, send the PCF policy to the UE.
  • the UE can also be used to receive a PCF policy.
  • the UE may be further configured to send the policy storage state information to the PCF network element
  • the method may further include: the UE may be further configured to send a registration request message to the AMF network element, where the registration request message carries the policy storage.
  • the AMF network element is configured to receive the registration request message, and send a policy control acquisition request message to the PCF network element, where the policy control acquisition request message carries the policy storage state information.
  • the UE may be further configured to send the policy storage state information to the PCF network element, where the UE may further be configured to: after receiving the configuration information sent by the PCF network element, send the policy storage to the PCF network element. status information.
  • the first network element is a first AMF network element; the system may further include: a second AMF network element, where the second AMF network element is an AMF connected by the UE before connecting the first AMF network element. Network element.
  • the second AMF network element is configured to send the UE's policy information to the first AMF network element.
  • the first AMF network element may be further configured to receive policy information of the UE.
  • the second AMF network element is configured to send the policy information of the UE to the first AMF network element, where the second AMF network element is configured to send the first message to the first AMF network element, where the first message is sent.
  • the context information of the UE and the policy information of the UE are included.
  • the embodiment of the present application further provides a system for determining a PCF network element.
  • the system can include: a UDM network element, a first AMF network element, and a second AMF network element.
  • the UDM network element is configured to send the identifier information of the first PCF network element to the first AMF network element.
  • the first AMF network element is configured to receive the identifier information of the first PCF network element sent by the UDM network element, and select the first PCF network element as the PCF network element that provides the service for the UE.
  • the first PCF network element is an AMF network element selected by the second AMF network element to provide services for the UE.
  • the optional first AMF network element and the second AMF network element may be the same network element or different network elements.
  • the first AMF network element may be further configured to send a query request message to the UDM network element, where the query request message is used to request the identifier information of the first PCF network element.
  • the UDM network element is configured to send, to the first AMF network element, the identifier information of the first PCF network element, where the UDM network element is configured to: send a query response message to the first AMF network element, and query the response message.
  • the identifier information of the first PCF network element is carried in the middle.
  • the UDM network element after receiving the query request message, the UDM network element sends the query request message to the second AMF network element to query the identifier information of the first PCF network element.
  • the UDM network element receives the identification information of the first PCF network element sent by the second AMF network element.
  • the identification information of the PCF network element that the AMF network element selects for the UE to serve the UE may be stored in the UDM network element.
  • the AMF network element may report the selected PCF network element to the UDM after performing the PCF network element selection process.
  • the UDM network element may send the identifier of the first PCF network element to the first AMF network element by querying the locally stored information. Based on this, the first AMF network element may be used to reselect the second PCF network element serving the UE and send the identification information of the second PCF network element to the UDM network element.
  • the UDM network element may be further configured to receive the identifier information of the second PCF network element, and select, by the first AMF network element, the identifier information of the PCF network element that serves the UE from the first PCF network element.
  • the identification information is updated to the identification information of the second PCF network element.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • a software program it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer executes the instructions on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server or data center via wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device that includes one or more servers, data centers, etc. that can be integrated with the media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)) or the like.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a DVD
  • a semiconductor medium such as a solid state disk (SSD)

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Abstract

本申请实施例公开了一种配置UE的策略的方法、装置和系统，涉及通信技术领域，有助于减少空口资源的浪费。该方法可以包括：PCF网元接收第一网元发送的UE的策略信息；其中，UE的策略信息用于指示UE的策略；PCF网元根据UE的策略信息，向该UE发送配置信息；其中，配置信息用于指示该UE更新该UE的策略。

Description

一种配置UE的策略的方法、装置和系统
本申请要求于2018年01月15日提交中国专利局、申请号为201810037562.1、申请名称为“一种配置UE的策略的方法、装置和系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种配置用户设备(user equipment，UE)的策略的方法、装置和系统。
背景技术
为了应对无线宽带技术的挑战，保持第三代合作伙伴计划(3rd generation partnership project，3GPP)网络的领先优势，3GPP标准组在2016年底制定了下一代移动通信系统(next generation system)网络架构，称为第五代(5rd generation，5G)网络架构。
在5G网络中，为了满足UE的不同的业务需求，通常通过策略控制功能(policy control function，PCF)网元为UE提供不同的策略控制服务。具体的，PCF网元可以通过非接入层(non-access stratum，NAS)消息向UE发送策略。该策略包括接入网发现与选择策略(access ntwork discovery&selection policy，ANDSP)和用户设备路由选择策略(UE route selection policy，URSP)，分别用作选择接入方式和分组数据单元(packet data unit，PDU)会话。
由于UE的策略的尺寸(size)可能很大，而NAS消息的长度有限，因此，PCF网元可能需要分多次向UE发送策略。PCF网元可以维护自身给UE下发了哪些策略，但是，UE在同一个公共陆地移动网络(public land mobile network，PLMN)内移动的过程中可能更换PCF网元。根据现有标准，同一个PLMN内的不同PCF网元之间没有接口，因此新PCF网元不知道UE已获得了哪些策略，通常需要向该UE下发全部策略，这会造成空口资源的浪费。
发明内容
本申请实施例提供了一种配置UE的策略的方法、装置和系统，有助于节省空口资源。
第一方面，本申请实施例提供了一种配置UE的策略的方法。该方法可以包括：PCF网元接收第一网元发送的UE的策略信息；其中，该UE的策略信息用于指示该UE的策略；PCF网元至少根据该UE的策略信息，向该UE发送配置信息；其中，配置信息用于指示该UE更新该UE的策略。可选的，第一网元可以是UDR网元或者AMF网元。可选的，UE的策略信息用于指示该UE的当前策略，即当前网络侧已配置该UE的策略。该策略可以例如但不限于包括URSP、ANDSP和WLANSP中的至少一种，当然本申请不限于此。该技术方案中，PCF网元可以向第一网元获取该UE的策略信息，从而至少根据该UE的策略信息向该UE发送配置信息，这有助于实现PCF 网元可以不再向该UE发送UE的策略信息所指示的策略，从而有助于节省空口资源。
在一种可能的设计中，PCF网元根据至少根据该UE的策略信息，向该UE发送配置信息，可以包括：配置信息包括第一配置信息，PCF网元向该UE发送第一配置信息；其中，第一配置信息用于指示该UE的第一策略，该UE的策略信息所指示的策略不包含第一策略。可选的，第一配置信息可以包括第一策略。该可能的设计中，PCF网元可以不向UE下发该UE的策略信息所指示的策略。与现有技术中PCF网元需要向UE下发所有策略相比，可以节省空口资源。
在一种可能的设计中，PCF网元至少根据该UE的策略信息，向该UE发送配置信息，可以包括：配置信息包括第二配置信息，PCF网元向该UE发送第二配置信息；其中，第二配置信息用于指示该UE删除第二策略，该UE的策略信息所指示的策略包含第二策略。可选的，第二配置信息可以包括第二策略的标识信息。该可能的设计提供了一种PCF网元管理该UE的策略信息所指示的策略的具体实现方式，当然本申请不限于此。
在一种可能的设计中，PCF网元根据至少根据该UE的策略信息，向该UE发送配置信息，可以包括：配置信息包括第三配置信息，PCF网元向该UE发送第三配置信息；其中，第三配置信息用于指示该UE更新第三策略，该UE的策略信息所指示的策略包含第三策略。该可能的设计提供了一种PCF网元管理该UE的策略信息所指示的策略的具体实现方式，当然本申请不限于此。
在一种可能的设计中，该方法还可以包括：PCF网元向第一网元发送更新指示信息；其中，更新指示信息包含上述配置信息和配置信息标识的至少一种，配置信息标识用于指示上述配置信息。例如，若配置信息是第一配置信息，且第一配置信息包括第一策略，则更新指示信息可以包括第一策略的标识信息。又如，若配置信息是第二配置信息，且第二配置信息包括第二策略的标识信息，则更新指示可以包括第二策略的标识信息等。其他示例不再一一列举。该可能的设计中，PCF网元在UE的策略信息更新的情况下，将所更新的策略的信息同步到第一网元上，这样有助于后续为该UE提供服务的PCF网元可以向第一网元获取到最新的该UE的策略信息，从而有助于节省空口资源。
在一种可能的设计中，该方法还可以包括：PCF网元接收该UE发送的策略存储状态信息；其中，策略存储状态信息用于指示该UE是否存储有PCF策略；若策略状态信息指示该UE没有存储PCF策略，则PCF网元向该UE发送PCF策略。该可能的设计可以应用于UE存储的PCF策略丢失，例如UE因更换SIM卡导致更换SIM卡之前接收到的策略丢失的场景中。其中，PCF策略可以是上述该UE的策略信息所指示的策略。
在一种可能的设计中，PCF网元接收该UE发送的策略存储状态信息，可以包括：PCF网元接收AMF网元发送的策略控制获取请求消息；策略控制获取请求消息中携带策略存储状态信息，AMF网元在接收到该UE发送的注册请求消息后，向PCF网元发送策略控制获取请求消息。该可能的设计提供了一种UE上报策略存储状态信息的方式，本申请不限于此。
第二方面，本申请实施例提供了一种配置UE的策略的方法。该方法可以包括： 第一网元向PCF网元发送UE的策略信息；其中，策略信息用于指示UE的策略；以指示PCF网元至少根据策略信息，向UE发送配置信息；配置信息用于指示UE更新UE的策略。
在一种可能的设计中，该方法还可以包括：第一网元接收PCF网元发送的更新指示信息；其中，更新指示信息包含配置信息和配置信息标识的至少一种，配置信息标识用于指示配置信息；第一网元根据更新指示信息，更新该UE的策略信息。关于配置信息和配置信息标识的示例可参考上文，此处不再赘述。
在一种可能的设计中，第一网元是第一AMF网元，该方法还可以包括：第一AMF网元接收第二AMF网元发送的策略信息；其中，第二AMF网元是该UE在连接第一AMF网元之前连接的AMF网元。该可能的设计提供了一种第一AMF网元获取策略信息的具体实现方式，示例的，第一AMF网元可以是注册流程中的新AMF网元，第二AMF网元可以是注册流程中的旧AMF网元。或者，第一AMF网元可以是AMF网元切换流程中的目标AMF网元，第二AMF网元可以是AMF网元切换流程中的源AMF网元。
在一种可能的设计中，第一AMF网元接收第二AMF网元发送的策略信息，可以包括：第一AMF网元接收第二AMF网元发送的第一消息；其中，第一消息包括该UE的上下信息和该UE的策略信息。例如，在该方法应用于注册流程中时，第一消息可以例如但不限于是上下文传递响应消息。当然本申请不限于此。
第三方面，本申请实施例提供了一种配置UE的策略的方法。该方法可以包括：UE向PCF网元发送策略存储状态信息，其中，策略存储状态信息用于指示该UE是否存储有PCF策略，以用于指示PCF网元在策略存储状态信息指示该UE没有存储PCF策略时，向该UE发送PCF策略。UE接收PCF网元发送的该PCF策略。
在一种可能的设计中，UE向PCF网元发送策略存储状态信息，可以包括：UE向AMF网元发送注册请求消息，注册请求消息中携带策略存储状态信息；注册请求消息用于指示AMF网元向PCF网元发送策略控制获取请求消息，其中，策略控制获取请求消息中携带策略存储状态信息。
在一种可能的设计中，UE向PCF网元发送策略存储状态信息，可以包括：UE在接收到PCF网元发送的配置信息之后，向PCF网元发送策略存储状态信息；其中，配置信息是PCF网元至少根据该UE的策略信息向该UE发送的配置信息，配置信息用于指示该UE更新该UE的策略。
基于上述第二方面至第三方面提供的任一方法，在一种可能的设计中，第一网元可以是AMF网元或UDR网元。在另一种可能的设计中，UE的策略信息用于指示当前该UE的策略，即当前网络侧已配置该UE的策略，该策略可以例如但不限于包括URSP、ANDSP和WLANSP中的至少一种，当然本申请不限于此。
第四方面，本申请实施例提供了一种配置UE的策略的系统，该系统可以包括PCF网元、第一网元和UE。其中，PCF网元可以用于执行上述第一方面中的任一方法，第一网元可以用于执行上述第二方面中提供的对应方法，UE可以用于执行上述第三方面提供的对应方法。
第五方面，本申请实施例提供了一种PCF网元。该PCF网元可以用于执行上述第 一方面提供的任一种方法。该PCF网元具体可以是上述第一方面中描述的PCF网元。
在一种可能的设计中，可以根据上述第一方面提供的方法对PCF网元进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。
在另一种可能的设计中，该PCF网元可以包括：存储器和处理器，存储器用于存储计算机程序，该计算机程序被处理器执行时，使得第一方面提供的任一方法被执行。
第六方面，本申请实施例提供了一种第一网元。该第一网元可以用于执行上述第二方面提供的任一种方法。该第一网元具体可以是上述第二方面中描述的第一网元。
在一种可能的设计中，可以根据上述第二方面提供的方法对第一网元进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。
在另一种可能的设计中，该第一网元可以包括：存储器和处理器，存储器用于存储计算机程序，该计算机程序被处理器执行时，使得第二方面提供的任一方法被执行。
第七方面，本申请实施例提供了一种终端装置。该终端装置可以用于执行上述第三方面提供的任一种方法。该UE具体可以是上述第三方面中描述的UE，或该终端装置可以是芯片。
在一种可能的设计中，可以根据上述第三方面提供的方法对终端装置进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。
在另一种可能的设计中，该终端装置可以包括：存储器和处理器，存储器用于存储计算机程序，该计算机程序被处理器执行时，使得第三方面提供的任一方法被执行。
本申请实施例还提供了一种处理装置，用以实现上述装置(例如PCF网元、第一网元或终端装置)的功能，该处理装置包括处理器和接口；处理装置可以是一个芯片，处理器可以通过硬件来实现也可以通过软件来实现，当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当通过软件来实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现，该存储器可以集成在处理器中，可以位于处理器之外，独立存在。
本申请实施例还提供了一种计算机可读存储介质，其上储存有计算机指令，当该计算机指令在计算机上运行时，使得计算机执行上述第一方面至第三方面的任一种可能的方法。
本申请实施例还提供了一种计算机程序产品，当其在计算机上运行时，使得第一方面至第三方面提供的任一方法被执行。
第八方面，本申请实施例提供了一种确定PCF网元的方法。该方法可以包括：UDM网元向第一AMF网元发送第一PCF网元的标识信息，以指示第一AMF网元选择第一PCF网元作为为UE提供服务的PCF网元。其中，第一PCF网元是第二AMF网元选择的为该UE提供服务的AMF网元。可选的，第一AMF网元与第二AMF网元可以是同一网元，也可以是不同网元。这样，可以有助于避免因先后(或同时)为同一UE提供服务的两个AMF网元所选择的PCF网元不同，或者，同一AMF网元在不同时刻所选择的PCF网元不同，从而导致这两个PCF网元向UE配置的策略不同，使得该 UE不知道要执行哪些策略的问题。
在一种可能的设计中，该方法还可以包括：UDM网元接收第一AMF网元发送的查询请求消息。该情况下，UDM网元向第一AMF网元发送第一PCF网元的标识信息，可以包括：UDM网元向第一AMF网元发送查询响应消息，该查询响应消息中携带第一PCF网元的标识信息。该可能的设计提供了一种UDM网元向第一AMF网元发送第一PCF网元的标识信息的实现场景，当然本申请不限于此。例如，UDM网元可以在确定第一AMF网元需要执行PCF网元选择流程时，向第一AMF网元发送第一PCF网元的标识信息，其中，本申请对UDM网元如何确定第一AMF网元需要执行PCF网元选择流程的具体实现方式不进行限定。
在一种可能的设计中，该方法还可以包括：UDM网元在接收到查询请求消息之后，向第二AMF网元发送该查询请求消息，以查询第一PCF网元的标识信息。UDM网元接收第二AMF网元发送的第一PCF网元的标识信息。该可能的设计提供了一种UDM网元获取第一PCF网元的标识信息的实现方式，当然本申请不限于此。
在一种可能的设计中，UDM网元中可以存储AMF网元为UE选择的为PCF网元的标识信息。其中，AMF网元可以在执行PCF网元选择流程之后，向UDM上报所选择的PCF网元。该情况下，UDM网元接收到查询请求消息之后，可以通过查询本地存储的信息，向第一AMF网元发送第一PCF网元的标识。基于此，可选的，该方法还可以包括：UDM网元接收第二PCF网元的标识信息，其中，第二PCF网元是第一AMF网元重新选择的为该UE提供服务的PCF网元。UDM网元将第一AMF网元选择的为该UE提供服务的PCF网元的标识信息从第一PCF网元的标识信息更新为第二PCF网元的标识信息。这样，有助于实现后续AMF网元可以从UDM网元上获取最新的为该UE提供服务的PCF网元的标识信息。
第九方面，本申请实施例提供了一种确定PCF网元的方法。该方法可以包括：第一AMF网元接收UDM网元发送的第一PCF网元的标识信息，并选择第一PCF网元作为为UE提供服务的PCF网元。其中，第一PCF网元是第二AMF网元选择的为该UE提供服务的AMF网元。可选的，第一AMF网元与第二AMF网元可以是同一网元，也可以是不同网元。
在一种可能的设计中，该方法还可以包括：第一AMF网元向UDM网元发送查询请求消息，其中，查询请求消息用于请求第一PCF网元的标识信息。第一AMF网元接收UDM网元发送的第一PCF网元的标识信息，包括：第一AMF网元接收UDM网元发送的查询响应消息，该查询响应消息中携带第一PCF网元的标识信息。
在一种可能的设计中，该方法还可以包括：第一AMF网元重新选择为该UE提供服务的第二PCF网元，并向UDM网元发送第二PCF网元的标识信息，以指示UDM网元更新第一AMF网元所选择的为该UE提供服务的PCF网元。
第十方面，本申请实施例提供了一种确定PCF网元的系统。该系统可以包括：UDM网元、第一AMF网元和第二AMF网元。其中，UDM网元可以用于执行上述第八方面提供的任一方面，第一AMF网元可以用于执行上述第九方面提供的对应方法。
第十一方面，本申请实施例提供了一种UDM网元。该UDM网元可以用于执行上述第八方面提供的任一种方法。该UDM网元具体可以是上述第八方面中描述的UDM 网元。
在一种可能的设计中，可以根据上述第八方面提供的方法对UDM网元进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。
在另一种可能的设计中，该UDM网元可以包括：存储器和处理器，存储器用于存储计算机程序，该计算机程序被处理器执行时，使得第八方面提供的任一方法被执行。
第十二方面，本申请实施例提供了一种AMF网元。该AMF网元可以用于执行上述第九方面提供的任一种方法。该AMF网元具体可以是上述第九方面中描述的第一AMF网元。
在一种可能的设计中，可以根据上述第九方面提供的方法对AMF网元进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。
在另一种可能的设计中，该AMF网元可以包括：存储器和处理器，存储器用于存储计算机程序，该计算机程序被处理器执行时，使得第九方面提供的任一方法被执行。
本申请实施例还提供了一种处理装置，用以实现上述装置(例如上述第十一方面提供的UDM网元或上述第十二方面提供的AMF网元)的功能，该处理装置包括处理器和接口；处理装置可以是一个芯片，处理器可以通过硬件来实现也可以通过软件来实现，当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当通过软件来实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现，该存储器可以集成在处理器中，可以位于处理器之外，独立存在。
本申请实施例还提供了一种计算机可读存储介质，其上储存有计算机指令，当该计算机指令在计算机上运行时，使得计算机执行上述第八方面至第九方面的任一种可能的方法。
本申请实施例还提供了一种计算机程序产品，当其在计算机上运行时，使得第八方面至第九方面提供的任一方法被执行。
第十三方面，提供了一种芯片系统，该芯片系统包括处理器，用于通信装置实现上述各方面中所涉及的功能，例如，生成，接收，发送，或处理上述方法中所涉及的数据和/或信息。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存通信装置必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。该芯片系统也可以为一种装置。
可以理解的，上述提供的任一种装置系统或计算机存储介质或计算机程序产品均用于执行上文所提供的对应的方法，因此，其所能达到的有益效果可参考对应的方法中的有益效果，此处不再赘述。
附图说明
图1为本申请实施例提供的技术方案所适用的一种通信系统的架构示意图；
图2为本申请实施例提供的一种通信设备的结构示意图；
图3为本申请实施例提供的一种配置UE的策略的方法流程示意图一；
图4为本申请实施例提供的一种配置UE的策略的方法流程示意图二；
图5为本申请实施例提供的一种配置UE的策略的方法流程示意图三；
图6为本申请实施例提供的一种配置UE的策略的方法流程示意图四；
图7为本申请实施例提供的一种配置UE的策略的方法流程示意图五；
图8为本申请实施例提供的一种配置UE的策略的方法流程示意图六；
图9为本申请实施例提供的一种配置UE的策略的方法流程示意图七；
图10为本申请实施例提供的一种配置UE的策略的方法流程示意图八；
图11为本申请实施例提供的一种配置UE的策略的方法流程示意图九；
图12为本申请实施例提供的一种配置UE的策略的方法流程示意图十；
图13为本申请实施例提供的一种确定PCF网元的流程示意图；
图14为本申请实施例提供的一种PCF网元的结构示意图；
图15为本申请实施例提供的一种第一网元的结构示意图；
图16为本申请实施例提供的一种终端装置的结构示意图；
图17为本申请实施例提供的一种UDM网元的结构示意图；
图18为本申请实施例提供的一种AMF网元的结构示意图。
具体实施方式
在本申请的描述中，除非另有说明，“/”表示或的意思，例如，A/B可以表示A或B；本文中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。并且，在本申请的描述中，除非另有说明，“多个”是指两个或多于两个。另外，为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
需要说明的是，本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
本申请实施例提供的技术方案可以应用于无线通信系统中，该无线通信系统可以是5G系统，或者是未来的其他通信系统中。当然也可以是长期演进(long term evolution，LTE)系统、LTE演进(LTE-Advanced，LTE-A)系统等。以无线通信系统是5G系统为例，如图1所示，为本申请实施例提供的技术方案所适用的一种通信系统的架构示意图。在图1中，该通信系统可以包括：UE10、无线接入网络(radio access netwok，RAN)或者接入网络(access network，AN)20(下文中称为(R)AN20)，以及核心网网络30。核心网网络30包括：接入和移动性管理功能(access and mobility management function，AMF)网元301、PCF网元302、统一数据库(unified data repository，UDR)网元303和统一数据管理(unified data management，UDM)网元304等。UE10通过下一代网络(next generation，N)接口1(简称N1)与AMF网元301通信。(R)AN20，具体是(R)AN20中的网元，通过N2接口(简称N2)与AMF网元301通信，AMF网 元301通过N15接口(简称N15)与PCF网元302通信。PCF网元302通过N25接口(简称N25)与UDR网元303通信。AMF网元301通过N8接口(简称N8)与UDM网元304通信。上述各个网元之间的连接可以为无线连接或者有线连接，为了方便直观地表示各个网元之间的连接关系，图1中采用实线示意。
UE10：即终端(terminal)，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；还可以包括用户单元(subscriber unit)、蜂窝电话(cellular phone)、智能电话(smart phone)、无线数据卡、个人数字助理(personal digital assistant，PDA)电脑、平板型电脑、无线调制解调器(modem)、手持设备(handheld)、膝上型电脑(laptop computer)、无绳电话(cordless phone)或者无线本地环路(wireless local loop，WLL)台、机器类型通信(machine type communication,MTC)终端、用户设备(user equipment，UE)，移动台(mobile station，MS)，终端设备(terminal device)或者中继用户设备等。其中，中继用户设备例如可以是5G家庭网关(residential gateway，RG)。为方便描述，本申请中，将这些终端统称为UE。
(R)AN 20：用于UE10接入网络，(R)AN 20中的网元可以例如但不限于包括基站、演进型基站(evolved node base station，eNB)，下一代基站(next generation node base station，gNB)、新型无线电基站(new radio eNB)、宏基站、微基站、高频基站或发送和接收点(transmission and reception point，TRP))、非3GPP接入网络(如WiFi)和/或非3GPP互通功能(non-3GPP interworking function，N3IWF)等设备。
AMF网元301：用于连接管理、移动性管理、注册管理、接入认证和授权、可达性管理以及安全上下文管理等。通常，由一个AMF网元301为同一UE10提供服务。可选的，在漫游场景中，也可以同时有两个AMF网元301为同一UE10提供服务。随着UE10的位置的更换，为该UE10提供服务的AMF网元301可以更换。具体的，可以由(R)AN 20执行选择AMF网元301的流程。另外，在本申请提供的一些实施例中，AMF网元301可以存储UE10的策略信息，例如，存储当前哪些策略已配置给UE10，可选的，还可以存储当前哪些策略需要配置但还未配置给UE10等。AMF网元301存储的UE10的策略信息可以随着网络侧配置给UE10的策略的更新而更新，具体示例可参考下文。其中，网络侧已配置给UE10的策略，可以包括网络侧的PCF网元302(包括曾为该UE10提供服务的PCF网元和当前为该UE10提供服务的PCF网元302)为该UE配置的策略。UE10的策略信息可以用于指示该UE的策略，例如ANDSP、URSP和无线局域网选择策略(wireless local area networks selection policy，WLANSP)中的至少一项，当然也可以是其他策略，本申请对此不进行限定。
PCF网元302：用于制定策略、提供策略控制服务以及获取策略决策相关的签约信息等。PCF网元302确定的需要向UE10配置的策略可以更新，例如，PCF网元302根据UE10的位置的更换、UE10的签约信息的更改等，对需要向该UE10配置的策略进行更新。例如某一时刻，PCF网元302根据某一UE10当前所处的位置和该UE10的签约信息等确定需要向该UE10配置的策略是策略1～10，另一时刻，由于该UE10的签约信息更改了，PCF网元302确定的需要向该UE10配置的策略是策略5～11。PCF网元302可以分多次向UE10配置策略，并存储自身已向UE10配置的策略的信息。 例如，假设某一时刻，PCF网元302确定的需要向该UE10配置的策略是策略1～10，则PCF网元302可以第一次向该UE10发送策略1～3，第二次向该UE发送策略4～10等。此外，根据UE10所处的位置的更换等原因，为该UE10提供策略控制服务的PCF网元302也可以更改。具体的可以由AMF网元301执行选择PCF网元的流程。
UDR网元303：用于向UDM网元304提供签约数据或者从UDM网元304中获取签约数据；以及，向PCF网元302提供策略数据，或者从PCF网元302中获取策略数据等。另外，在本申请提供的一些实施例中，UDR网元303可以存储UE10的策略信息。
UDM网元304：用于处理3GPP认证和密钥协商机制中的认证信息、处理用户身份信息，接入授权、注册和移动性管理、签约管理、短消息管理等。
虽然未示出，上述5G网络还可能包括其他的网元，例如，用户面功能(user plane function，UPF)网元、认证服务功能(authentication server function，AUSF)网元、应用功能(appllication function，AF)网元、能力开放功能网元(network exposure function，NEF)，以及网络切片选择功能(network slice selection function，NSSF)网元等，本申请实施例对此不作具体限定。
需要说明的是，图1中的各个网元之间的接口名字只是一个示例，具体实现中接口名字可能为其他名字，本申请实施例对此不作具体限定。
需要说明的是，图1的AMF网元301、PCF网元302、UDR网元303和UDM网元304等仅是一个名字，名字对设备本身不构成限定。在5G网络以及未来其它的网络中，AMF网元301、PCF网元302、UDR网元303和UDM网元304所对应的网元或实体也可以是其他的名字，本申请实施例对此不作具体限定。例如，AMF网元301还有可能被替换为AMF301，等等，在此进行统一说明，以下不再赘述。
可选的，图1中的各网元(例如UE10、AMF网元301、PCF网元302、UDR网元303和UDM网元304等)可以由一个设备实现，也可以由多个设备共同实现，还可以是一个设备内的一个功能模块，本申请实施例对此不作具体限定。可以理解的是，上述功能既可以是硬件设备中的网络元件，也可以是在专用硬件上运行的软件功能，或者是平台(例如，云平台)上实例化的虚拟化功能。
例如，图1中的各网元均可以通过图2中的通信设备来实现。图2所示为本申请实施例提供的通信设备的硬件结构示意图。该通信设备400包括至少一个处理器401，通信线路402，存储器403以及至少一个通信接口404。
处理器401可以是一个通用中央处理器(central processing unit，CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本申请方案程序执行的集成电路。
通信线路402可包括一通路，在上述组件之间传送信息。
通信接口404，使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网，RAN，无线局域网(wireless local area networks，WLAN)等。
存储器403可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器 (electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过通信线路402与处理器相连接。存储器也可以和处理器集成在一起。
其中，存储器403用于存储执行本申请方案的计算机执行指令，并由处理器401来控制执行。处理器401用于执行存储器403中存储的计算机执行指令，从而实现本申请下述实施例提供的方法。
可选的，本申请实施例中的计算机执行指令也可以称之为应用程序代码，本申请实施例对此不作具体限定。
在具体实现中，作为一种实施例，处理器401可以包括一个或多个CPU，例如图2中的CPU0和CPU1。
在具体实现中，作为一种实施例，通信设备400可以包括多个处理器，例如图2中的处理器401和处理器408。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
在具体实现中，作为一种实施例，通信设备400还可以包括输出设备405和输入设备406。输出设备405和处理器401通信，可以以多种方式来显示信息。例如，输出设备405可以是液晶显示器(liquid crystal display，LCD)，发光二级管(light emitting diode，LED)显示设备，阴极射线管(cathode ray tube，CRT)显示设备，或投影仪(projector)等。输入设备406和处理器401通信，可以以多种方式接收用户的输入。例如，输入设备406可以是鼠标、键盘、触摸屏设备或传感设备等。
上述的通信设备400可以是一个通用设备或者是一个专用设备。在具体实现中，通信设备400可以是台式机、便携式电脑、网络服务器、掌上电脑(personal digital assistant，PDA)、移动手机、平板电脑、无线终端设备、嵌入式设备或有图2中类似结构的设备。本申请实施例不限定通信设备400的类型。
以下，结合图1和图2说明本申请提供的配置UE的策略的方法。需要说明的是，本申请下述实施例中各个网元之间的消息名字或消息中各参数的名字只是一个示例，具体实现中也可以是其他的名字，在此进行统一说明，本申请实施例对此不作具体限定。
如图3所示，为本申请实施例提供的一种配置UE的策略的方法。该方法可以应用于如图1所示的通信系统中。该方法包括如下步骤：
S101：第一网元向PCF网元发送UE的策略信息(如UE policy status information)，PCF网元接收UE的策略信息。其中，UE的策略信息用于指示UE的策略。第一网元可以是UDR网元或者AMF网元。
本实施例提供的配置UE的策略的方法，可以包括但不限于应用于注册流程中，或者PCF网元切换流程中。其中，PCF网元切换流程包括：在AMF网元不切换的情况下执行的PCF网元切换流程；以及在AMF网元切换的情况下执行的PCF网元切换 流程。
本申请对第一网元在何种触发条件下执行S101不进行限定。例如，若第一网元是UDR网元，则UDR网元可以在接收到PCF网元发送的请求消息(例如策略控制获取请求消息)的情况下，向PCF网元发送UE的策略信息。若第一网元是AMF网元，则AMF网元可以在执行PCF网元选择流程之后，向所选择的PCF网元发送UE的策略信息。本申请不限于此。
PCF网元可以同时为一个或多个UE提供服务，S101中的UE可以是PCF网元所服务的任一UE。为任一UE提供服务的PCF网元可以更换。UE的策略信息，用于指示当前该UE的策略，即当前网络侧已配置给该UE的策略，例如，可以包括为该UE提供服务(包括曾提供过服务或正在提供服务)的一个或多个PCF网元(包括S101中的PCF网元本身和其他PCF网元)向该UE配置的策略。
本申请中，第一网元可以存储UE的策略信息。第一网元存储的UE的策略信息可以是PCF网元在向UE发送配置信息的情况下，同步到第一网元上的，当然本申请不限于此。关于PCF网元向第一网元同步UE的策略信息的具体实现方式可参考下文，例如，可以参考下文图4～图6。本申请对UE的策略信息的具体方式不进行限定。以下列举几种可能的方式：
方式一、UE的策略信息，具体可以体现为：UE的标识信息与网络侧已配置给该UE的策略的标识信息之间的对应关系。例如，假设当前时刻，网络侧需要向UE1配置的策略是策略1～3，需要向UE2配置的策略是策略1～4，需要向UE3配置的策略是策略3、4，且当前，网络侧已配置给UE1的策略是策略1，已配置给UE2的策略是策略1、2，已配置给UE3的策略是策略3、4，则第一网元中存储的UE的策略信息可以如表1所示。
表1
UE的标识信息 网络侧已配置给UE的策略的标识信息
UE1的标识信息 策略1的标识信息
UE2的标识信息 策略1的标识信息、策略2的标识信息
UE3的标识信息 策略3的标识信息、策略4的标识信息
方式二、UE的策略信息，具体可以体现为：UE的标识信息与网络侧需要向该UE配置的策略的标识信息，以及网络侧需要向该UE配置的每一策略是否处于已配置状态之间的对应关系。例如，可以使用二进制数“1”表示处于已配置状态，使用二进制数“0”表示处于未配置状态。例如，基于表1所示的示例，该方式中，第一网元存储的UE的策略信息可以如表2所示。
表2
Figure PCTCN2019071741-appb-000001
方式三、UE的策略信息，具体可以体现为：UE的标识信息与网络侧已配置给该UE的策略的内容之间的对应关系。例如，基于表1所示的示例，该方式中，第一网元存储的UE的策略信息可以如表3所示。
表3
UE的标识信息 网络侧已配置给UE的策略的内容
UE1的标识信息 策略1的内容
UE2的标识信息 策略1的内容、策略2的内容
UE3的标识信息 策略3的内容、策略4的内容
方式四、UE的策略信息，具体可以体现为：UE的标识信息与网络侧需要向该UE配置的策略的内容，以及网络侧需要向该UE配置的每一策略是否处于已配置状态之间的对应关系。例如，可以使用二进制数“1”表示处于已配置状态，使用二进制数“0”表示处于未配置状态。例如，基于表1所示的示例，该方式中，第一网元存储的UE的策略信息可以如表4所示。
表4
Figure PCTCN2019071741-appb-000002
例如，假设S101中的UE是UE2，那么：若UE的策略信息如表1所示，UE的 策略信息具体可以是策略1的标识信息和策略2的标识信息。若UE的策略信息如表2所示，则UE的策略信息具体可以是策略1～2的标识信息以及状态“11”，其中，状态“11”表示策略1、2已配置；或者，UE的策略信息具体可以是：策略1～4的标识信息以及状态“1100”，其中，状态“1100”表示策略1、2已配置，策略3、4未配置。若UE的策略信息如表3所示，则UE的策略信息具体可以是策略1的内容和策略2的内容。若UE的策略信息如表4所示，则UE的策略信息具体可以是策略1～2的内容以及状态“11”，其中，状态“11”表示策略1、2已配置；或者，UE的策略信息具体可以是：策略1～4的内容以及状态“1100”，其中，状态“1100”表示策略1、2已配置，策略3、4未配置。
需要说明的是，第一网元向PCF网元发送的UE的策略信息可以是第一网元中存储的该UE的策略信息中的部分或全部。例如，假设S101中的UE是UE2，那么，若UE的策略信息如表1所示，UE的策略信息具体可以是策略1的标识信息。其他示例不再一一列举。
可以理解的，上述表1～表4是第一网元存储的UE的策略信息的示例，其不构成对第一网元存储的UE的策略信息的限定。
需要说明的是，若第一网元是AMF网元，则该AMF网元可以是指当前(即执行S101的时刻)为该UE提供服务的AMF网元(例如图9中的新AMF网元，或者图10中的源AMF网元)，若该AMF网元不是首次为该UE提供服务的AMF网元，则该AMF网元可以通过接收当前时刻之前为该UE提供过服务的AMF网元(例如图9中的旧AMF网元，或者图10中的目标AMF网元)发送的UE的策略信息之后，向PCF网元发送UE的策略信息。
S102：PCF网元存储UE的策略信息。
后续，本申请对PCF网元如何利用所存储的UE的策略信息不进行限定。例如，PCF网元可以按照管理自身已向该UE配置的策略的方式，管理UE的策略信息所指示的策略。例如，可以执行下述S103。
S103：PCF网元至少根据UE的策略信息，向该UE发送配置信息。例如，PCF网元还可以根据UE的位置的更换和UE的签约信息的更改中的至少一项，以及UE的策略信息，向该UE发送配置信息。
具体的，PCF网元向UE发送配置信息可以包括以下至少一种情形：①PCF网元向该UE下发新的一个或多个策略。②PCF网元指示该UE删除S101中的UE的策略信息所指示的一个或多个策略。③PCF网元指示该UE修改S101中的UE的策略信息所指示的一个或多个策略的内容。
可选的，基于上述方式一和方式二任一种，由于PCF网元在执行上述情形①或②时，更新了网络侧已配置给UE的策略的标识信息，即更新了UE的策略信息，因此，PCF网元可以将所更新的策略的标识信息同步到第一网元上，这样有助于后续为该UE提供服务的PCF网元可以向第一网元获取到最新的UE的策略信息。基于上述方式三和方式四任一种，PCF网元在执行上述情形①、②或③时，均更新了网络侧已配置给UE的策略，因此，PCF网元可以将所更新的策略同步到第一网元上，这样有助于后续为该UE提供服务的PCF网元可以向第一网元获取到最新的UE的策略信息。
以下，以UE的策略信息是上述方式一或方式二为例进行说明。并且，结合图4对上述情形①进行说明，结合图5对上述情形②进行说明，结合图6对上述情形③进行说明。
如图4所示，为本申请实施例提供的一种配置UE的策略的方法的流程图。该方法可以包括如下步骤：
S201：PCF网元向UE发送第一配置信息，该UE接收第一配置信息。第一配置信息用于向该UE配置第一策略，S101中的UE的策略信息所指示的策略不包含第一策略。
其中，第一配置信息可以携带第一策略的内容，可选的还可以携带第一策略的标识信息。
具体的，PCF网元可以根据该UE的位置更换、UE的签约信息更改等信息，确定需要向该UE下发新的策略，从而执行上述S201。其中，该新的策略是指S101中的UE的策略信息所指示的策略之外的策略。PCF网元可以经AMF网元向UE发送第一配置信息。
S202：UE接收到第一配置信息之后，存储第一策略。
后续，UE可以基于第一策略执行第一策略对应的操作。例如，假设第一策略是ANDSP，则UE可以根据第一策略所指示的接入方式进行网络接入。
S203：PCF网元向第一网元发送第一更新指示信息，第一网元接收第一更新指示信息。其中，第一更新指示信息用于指示第一网元更新第一网元存储的该UE的策略信息，具体是将第一策略标记为网络侧已配置给该UE的策略。
其中，第一更新指示信息可以携带第一策略的标识信息。
S204：第一网元根据第一更新指示信息，将第一策略标记为网络侧已配置给该UE的策略。
例如，参见表1，若UE是UE2，则S101中的UE的策略信息所指示的策略可以是策略1和策略2，即网络侧已配置该UE的策略是策略1和策略2。在本实施例中，第一策略可以是策略3或策略4。若第一策略是策略3，则执行S204后，第一网元中存储的各UE的策略信息可以如表5所示。
表5
Figure PCTCN2019071741-appb-000003
需要说明的是，本申请对S201～S202与S203～S204的执行顺序不进行限定，例如可以先执行S201～S202再执行S203～S204，也可以先执行S203～S204再执行S201～S202，还可以同时执行S201～S202和S203～S204。
本实施例中，一方面，PCF网元可以不向UE下发该UE的策略信息所指示的策略。与现有技术中PCF网元需要向UE下发所有策略相比，可以节省空口资源。另一方面，PCF网元在向UE配置第一策略的情况下，即UE的策略信息进行更新的情况 下，将所更新的策略的信息同步到了第一网元上，这样有助于后续为该UE提供服务的PCF网元可以向第一网元获取到最新的该UE的策略信息，从而有助于节省空口资源。
如图5所示，为本申请实施例提供的一种配置UE的策略的方法的流程图。该方法可以包括如下步骤：
S301：PCF网元向UE发送第二配置信息，UE接收第二配置信息。其中，第二配置信息用于指示该UE删除第二策略，S101中的UE的策略信息所指示的策略包含第二策略。
其中，策略删除指示中可以携带第二策略的标识信息。
具体的，PCF网元可以根据UE的位置更换、UE的签约信息更改等信息，确定网络侧配置给该UE的某个或某些策略已不再适用，从而向该UE发送第二配置信息。PCF网元可以经AMF网元向UE发送第二配置信息。第二策略是PCF网元确定的不再适用于UE的策略。
S302：UE根据第二配置信息，删除第二策略。具体的，UE根据第二配置信息，删除第二策略的内容和第二策略的标识信息。
后续，UE不能再基于第二策略执行第二策略对应的操作。例如，假设第二策略是ANDSP，则UE不能再根据第二策略所指示的接入方式进行网络接入。
S303：PCF网元向第一网元发送第二更新指示信息，第一网元接收第二更新指示信息。其中，第二更新指示信息用于指示第一网元更新本地存储的该UE的策略信息，具体是将第二策略标记为网络侧已删除的配置给该UE的策略，即标记为网络侧未配置给该UE的策略。第二更新指示信息可以携带第二策略的标识信息。
S304：第一网元根据第二更新指示信息，将第二策略标记为网络侧未配置给该UE的策略。
例如，参见表1，若UE是UE2，则S101中的UE的策略信息所指示的策略可以是策略1和策略2，即网络侧已配置该UE的策略是策略1和策略2。在本实施例中，第二策略可以是策略1或策略2。若第一策略是策略1，则执行S304之后，第一网元中存储的各UE的策略信息可以如表6所示。
表6
UE的标识信息 网络侧已配置给UE的策略的标识信息
UE1的标识信息 策略1的标识信息
UE2的标识信息 策略2的标识信息
UE3的标识信息 策略3的标识信息、策略4的标识信息
需要说明的是，本申请对S301～S302与S303～S304的执行顺序不进行限定，例如可以先执行S301～S302再执行S303～S304，也可以先执行S303～S304再执行S301～S302，还可以同时执行S301～S302和S303～S304。
另外需要说明的是，若先执行S301～302，则在一种可能的实现方式中，UE在执行S301中的接收第二配置信息之后，如果确定本地存储有第二策略，则执行S302，执行S302之后可以接着执行S303～S304。如果确定本地没有存储第二策略，则UE可以向PCF网元发送错误指示信息，其中，该错误指示信息用于指示该UE中没有存储 第二策略。PCF网元在接收到该错误指示信息之后，可以不再执行下述S303～S304。若先执行S303～S304，则在一种可能的实现方式中，第一网络在S303中接收到第二指示信息之后，如果确定本地将第二策略标记为网络侧已配置给该UE的策略，则执行S304。执行S304之后可以接着执行S301～302。如果确定本地并没有将第二策略标记为网络侧已配置给该UE的策略，则第一网元可以向PCF网元发送错误指示信息，其中，该错误指示信息用于指示第一网元中没有存储第二策略。PCF网元在接收到该错误指示信息之后，可以不再执行S301～S302。关于同时执行S301～S302和S303～S304的情况，UE和第一网络均可以在确定本地没有存储第二策略时，向PCF网元发送错误指示信息。上述任一发送错误指示信息的实现方式均有助于在PCF网元的控制下，使得UE和第一网元中存储的网络侧已配置给该UE的策略的信息一致，从而有助于避免网络侧重复向该UE配置同一策略，造成的空口资源浪费的问题的发生。另外，这一构思也可以应用于如图4所示的配置UE的策略的实施例中，此时，错误指示信息可以用于指示本地存储有第一策略，具体方案此处不再详述。
本实施例中，PCF网元可以对S101中的UE的策略信息所指示的策略进行管理。具体的，可以对这些策略中的一个或多个策略进行删除，并且，在因删除该一个或多个策略导致UE的策略信息进行更新的情况下，将所更新的策略的信息同步到第一网元上，这样有助于后续为该UE提供服务的PCF网元可以向第一网元获取到最新的该UE的策略信息，从而有助于节省空口资源。
需要说明的是，基于上述图4或图5所示的技术方案，若第一网元是AMF网元，则PCF网元向AMF网元发送的更新指示信息(例如第一更新指示信息或第二更新指示信息)需要被AMF网元识别，这样AMF网元才可以根据该更新指示信息更新所存储的该UE的策略信息。基于此，在一种可能的实现方式中，更新指示信息可以是PCF网元与AMF网元之间进行通信的消息中NAS container(容器)之外的信息。另外，PCF网元通过AMF网元向UE发送的第一配置信息、第二配置信息，以及下文中的第三配置信息，可以是通过NAS透传的。
如图6所示，为本申请实施例提供的一种配置UE的策略的方法的流程图。该方法可以包括如下步骤：
S401：PCF网元向UE发送第三配置信息，该UE接收第三配置信息。其中，第三配置信息用于指示该UE更新第三策略，S101中的UE的策略信息所指示的策略包含第三策略。更新第三策略具体是指更新第三策略的内容。
其中，第三配置信息中可以携带第三策略的标识信息，以及新的第三策略的信息。新的第三策略的信息可以是新的第三策略的全部信息，或者新的第三策略与UE当前存储的第三策略之间的差异信息等。本申请对此不进行限定。
具体的，PCF网元可以根据UE的位置的更换、UE的签约信息更改等信息，确定网络侧已配置给该UE的某个或某些策略的内容需要更改，从而向该UE发送第三配置信息。PCF网元可以经AMF网元向UE发送第三配置信息。
S402：UE根据第三配置信息，将当前存储的第三策略更新为新的第三策略。
例如，参见表1，若UE是UE2，则S101中的UE的策略信息所指示的策略可以是策略1和策略2，即网络侧已配置该UE的策略是策略1和策略2。在本实施例中， 第三策略可以是策略1或策略2。
本实施例提供的技术方案中，PCF网元可以对S101中的UE的策略信息所指示的策略进行管理。具体的，可以对这些策略中的一个或多个策略的内容进行更新。可以理解的，基于上述方式一或方式二，PCF网元不需要将所更新的策略的信息同步到第一网元上。
需要说明的是，上文均是以策略为粒度对本申请提供的配置UE的策略的方法进行说明的，实际实现的过程中，也可以是以策略组为粒度配置UE的策略，其中，一个策略组包括一个或多个策略。配置信息可包括第一配置信息、第二配置信息或第三配置信息中的至少两种，PCF网元需要向UE发送该包含第一配置信息、第二配置信息或第三配置信息中的至少两种的配置信息，配置信息中的不同种配置信息分别指示UE执行不同的操作。
以第一网元是UDR网元为例，如图7所示，是图3所示的技术方案应用于注册流程中的示意图。具体包括如下步骤：
S501：UE向(R)AN发送注册请求消息。
S502：(R)AN接收到注册请求消息后，执行AMF网元选择流程，以确定UE本次注册过程中，为该UE提供服务的AMF网元(下文中称为新AMF网元)。
S503：(R)AN向新AMF网元发送注册请求消息。
需要说明的是，通常，在(R)AN接收到UE发送的注册请求消息后，(R)AN可以为该UE分配一个5G临时标识。并且，(R)AN可以根据该5G临时标识，确定在执行本注册流程之前，该UE是否接入过其他AMF网元(即旧AMF网元)。若该UE已接入过旧AMF网元，则在S503中的注册请求消息中携带旧AMF网元的标识信息，若新AMF网元与旧AMF网元不是同一网元，则可以执行S504～S505，使得新AMF网元通过与旧AMF网元进行信息交互，获得该UE上下文信息，接着可执行S506。若新AMF网元与旧AMF网元是同一网元，则可直接执行S506。若该UE没有接入过旧AMF网元，则新AMF网元可以根据现有技术流程建立该UE上下文信息，从而执行S506。其中，关于建立该UE上下文信息的流程在现有技术中已有详细描述，此处不再赘述。
S504：新AMF网元向旧AMF网元发送上下文传递请求消息。上下文传递请求消息中携带UE的标识信息，用于请求UE上下文信息。UE的标识信息可以是上述5G临时标识。
S505：旧AMF网元向新AMF网元发送上下文传递响应消息。其中，上下文传递响应消息中携带该UE上下文信息。
S506：新AMF网元执行PCF网元选择流程，以确定UE本次注册过程中，为该UE提供服务的PCF网元。
S507：新AMF网元向该PCF网元发送策略控制获取请求消息，其中，该策略控制获取请求消息用于请求PCF网元向该UE下发策略。
S508：该PCF网元向UDR网元发送第一请求消息，第一请求消息用于请求该UE的策略信息。
S509：UDR网元向该PCF网元发送第一响应消息，其中，第一响应消息中携带 UE的策略信息，UE的策略信息用于指示该UE的策略。
若PCF网元是该UE连接的首个PCF网元，则网络侧还未配置给UE任何策略，该情况下，UDR网元中没有存储网络侧已配置给该UE的策略的信息，因此，S509中的该UE的策略信息所指示的策略为空。PCF网元可以基于现有技术中提供的方法向UE配置策略。
若PCF网元是该UE连接的非首个PCF网元，则网络侧可能已配置给UE一个或一些策略，该情况下，UDR网元中可能存储有网络侧已配置给该UE的策略的信息，因此，S509中的该UE的策略信息所指示的策略不为空。
另外，可以理解的，若PCF网元是该UE连接的非首个PCF网元，则网络侧可能因至少执行图5所示的配置UE的策略的方法，导致UDR网元中没有存储网络侧已配置给该UE的策略的信息，该情况下，S509中的该UE的策略信息所指示的策略为空。PCF网元可以基于现有技术中提供的方法向UE配置策略。
需要说明的是，无论UE是否注册，UDR网元中均可以存储UE的策略信息。
执行S509之后，该方法还可以包括：该PCF网元存储UE的策略信息。后续，该PCF网元如何利用UE的策略信息可参考上述图4～图6。作为一个示例，PCF网元可以在执行下述S510和S511时，在策略控制获取响应消息和注册响应消息中携带上述第一配置信息和上述第二配置信息中的至少一种。另外，PCF网元也可以在执行S510之后，确定UE的位置更换、或UE的签约信息的更改等情况下，执行上述图4～图6，本申请对此不进行限定。
S510：PCF网元向新AMF网元发送策略控制获取响应消息。
S511：新AMF网元向该UE发送注册响应消息。
需要说明的是，图7所示的注册流程中仅示意了图3所示的技术方案相关的一些步骤，从而说明图3所示的技术方案的一种应用场景。实际实现时，注册流程中还可以包括AUSF网元选择流程和鉴权流程等等。这些相关流程在现有技术中已有详细描述，此处不再赘述。
以第一网元是UDR网元为例，如图8所示，是图3所示的技术方案应用于AMF网元切换流程中的示意图。具体包括如下步骤：
S601：(R)AN确定需要为UE切换AMF网元时，向当前为该UE提供服务的AMF网元(即源AMF网元)发送切换请求消息。其中，切换请求消息中可以携带该UE的标识信息，用于请求切换AMF网元。
S602：源AMF网元接收到切换请求消息后，执行AMF网元选择流程以选择目标AMF网元。
S603：源AMF网元向目标AMF网元发送UE上下文信息。
S604：目标AMF网元接收UE上下文信息后，执行PCF网元选择流程以选择目标PCF网元。其中，源PCF网元与目标PCF网元可以相同，也可以不相同，若源PCF网元与目标PCF网元不同，则执行以下S605。
S605：目标AMF网元向目标PCF网元发送策略控制获取请求消息。其中，策略控制获取请求消息用于请求向该UE下发策略。
S606：目标PCF网元向UDR网元发送第一请求消息，其中，第一请求消息用于 请求该UE的策略信息。
S607：UDR网元向目标PCF网元发送第一响应消息，其中，第一响应消息中携带UE的策略信息，UE的策略信息用于指示该UE的策略。
S608：PCF网元向目标AMF网元发送策略控制获取响应消息。
例如，策略控制获取响应消息中可以携带一个或多个第一策略，关于第一策略的描述可参考上文。当然，策略控制获取响应消息中也可以不携带策略，而是在AMF网元切换流程结束之后，PCF网元在确定UE的位置更换、或UE的签约信息的更改等情况下，执行上述图4～图6，本申请对此不进行限定。
S609：切换流程中的其他步骤。
需要说明的是，图8所示的AMF网元切换流程中仅示意了图3所示的技术方案相关的一些步骤，从而说明图3所示的技术方案的一种应用场景。实际实现时，AMF网元切换流程还可以包括其他步骤。这些步骤在现有技术中已有详细描述，此处不再赘述。
以第一网元是AMF网元为例，如图9所示，是图3所示的技术方案应用于注册流程中的示意图。具体包括如下步骤：
S701～S703：可参上述S501～S503，当然本申请不限于此。
需要说明的是，参见上述S503中的描述，若新AMF网元与旧AMF网元是同一网元，或者，该UE没有接入过旧AMF网元，则在执行S703之后，可以直接执行S706、S708～S710。当然本申请不限于此。另外需要说明的是，无论UE是否注册，AMF网元中均可以存储UE的策略信息。
S704：新AMF网元向旧AMF网元发送上下文传递请求消息。上下文传递请求消息中携带UE的标识信息，用于请求UE上下文信息。上下文传递请求消息还可以用于请求该UE的策略信息。
S705：旧AMF网元向新AMF网元发送上下文传递响应消息。其中，上下文传递响应消息中携带该UE上下文信息，以及UE的策略信息，其中，UE的策略信息用于指示该UE的策略。
S706：新AMF网元执行PCF网元选择流程，以确定UE本次注册过程中，为该UE提供服务的PCF网元。
S707：新AMF网元向该PCF网元发送UE的策略信息。
执行S707之后，该方法还可以包括：该PCF网元存储UE的策略信息。后续，该PCF网元如何利用UE的策略信息可参考上述图4～图6。作为一个示例，PCF网元可以在执行下述S709和S710时，在策略控制获取响应消息和注册响应消息中携带上述第一配置信息和上述第二配置信息中的至少一种。另外，PCF网元也可以在执行S510之后，确定UE的位置更换、或UE的签约信息的更改等情况下，执行上述图4～图6，本申请对此不进行限定。
S708：新AMF网元向该PCF网元发送策略控制获取请求消息，其中，该策略控制获取请求消息用于请求向该UE下发策略。
在一种可能的实现方式中，S707中的UE的策略信息可以携带在S708中的策略控制获取请求消息中由新AMF网元发送给该PCF网元。在另一种可能的是实现方式 中，S707中的UE的策略信息与S708中的控制策略获取请求是独立设计的两条消息。该情况下，本申请对S707和S708的执行顺序不进行限定。
S709：该PCF网元向新AMF网元发送策略控制获取响应消息。
S710：新AMF网元向该UE发送注册响应消息。
需要说明的是，图9所示的注册流程中仅示意了图3所示的技术方案相关的一些步骤，从而说明图3所示的技术方案的一种应用场景。实际实现时，注册流程中还可以包括AUSF网元选择流程和鉴权流程等等。这些相关流程在现有技术中已有详细描述，此处不再赘述。
以第一网元是AMF网元为例，如图10所示，是图3所示的技术方案应用于AMF网元切换流程中的示意图。具体包括如下步骤：
S801～S802：可参上述S601～S602，当然本申请不限于此。
S803：源AMF网元向目标AMF网元发送UE上下文信息和UE的策略信息，其中，UE的策略信息用于指示该UE的策略。其中，UE上下文信息和UE的策略信息可以携带在同一消息中，也可以携带在不同消息中。
S804：目标AMF网元接收UE上下文信息和UE的策略信息之后，执行PCF网元选择流程，以选择目标PCF网元。
其中，源PCF网元与目标PCF网元可以相同，也可以不相同，若源PCF网元与目标PCF网元不同，则执行以下S805
S805：目标AMF网元向目标PCF网元发送UE的策略信息。
S806：目标AMF网元向目标PCF网元发送策略控制获取请求消息。其中，该策略控制获取请求消息用于请求网络侧向该UE下发策略。
在一种可能的实现方式中，S805中的UE的策略信息可以携带在S806中的策略控制获取请求消息中由目标AMF网元发送给目标PCF网元。在另一种可能的是实现方式中，S805中的UE的策略信息与S806中的控制策略获取请求是独立设计的两条消息。该情况下，本申请对S805和S806的执行顺序不进行限定。
S807：目标PCF网元向目标AMF网元发送策略控制获取响应消息。
S808：切换流程中的其他步骤。
需要说明的是，图10所示的AMF网元切换流程中仅示意了图3所示的技术方案相关的一些步骤，从而说明图3所示的技术方案的一种应用场景。实际实现时，AMF网元切换流程还可以包括其他步骤。这些步骤在现有技术中已有详细描述，此处不再赘述。
在本申请的一些实施例中，考虑到UE存储的网络侧配置给该UE的策略可能丢失。例如，UE可能因更换客户识别模块(subscriber identity module，SIM)卡，导致更换SIM卡之前接收到的策略丢失。本申请提供了如图11所示的技术方案。该技术方案可以应用于上述提供的任一实施例中。如图11所示，具体可以包括如下步骤：
S901：UE向PCF网元发送策略存储状态信息，UE接收策略存储状态信息；其中，策略存储状态信息用于指示该UE是否存储有PCF策略。其中，PCF策略可以是上文中描述的该UE的策略信息所指示的策略。关于该UE的策略信息的相关描述可参考上文。
其中，本实施例对S901的触发条件不进行限定。例如，在一种可能的实现方式中，策略状态信息可以携带在注册请求消息中。在另一种实现方式中，UE可以在接收到PCF网元发送的配置信息之后，向PCF网元发送策略存储状态信息。其中，UE接收PCF网元发送的配置信息可以包括但不限于体现为上述图4～图6中的任一方法。
S902：若策略存储状态信息指示该UE没有存储PCF策略，则PCF网元向该UE发送PCF策略，UE接收PCF策略。
若在执行S902之前，PCF网元已向该UE发送除PCF策略之外的策略，则在S902中，PCF网元向该UE发送S101中的UE的策略信息所指示的策略即可。其中，UE的策略信息所指示的策略可以分一次或多次发送。
若在执行S902之前，PCF网元还未向该UE发送除PCF策略之外的策略，则在S902中，PCF网元可以向该UE发送网络侧需要向该UE配置的所有策略。其中，该所有策略可以分一次或多次发送。
需要说明的是，PCF网元向该UE发送的任一策略均可以是该PCF网元向UDR网元获取的。具体的获取过程在现有技术中已有详细描述，此处不再赘述。
以策略存储状态信息携带在注册请求消息中为例，如图12所示，是图11所示的技术方案应用于注册流程中的示意图。具体包括如下步骤：
S1001：UE向(R)AN发送注册请求消息。其中，该注册请求消息中携带策略存储状态信息。策略存储状态信息用于指示该UE是否存储有PCF策略。
在一种可能的实现方式中，策略存储状态信息用于指示该UE没有存储PCF策略，该情况下，UE可以在没有存储PCF策略的情况下，在注册请求消息中携带策略状态信息。在另一种可能的实现方式中，策略存储状态信息用于指示该UE存储有PCF策略，该情况下，UE可以在存储有PCF策略的情况下，在注册请求消息中携带策略状态信息。在另一种可能的实现方式中，策略存储状态信息可以通过携带的信息不同来指示该UE存储有PCF策略，或者指示该UE中没有存储PCF策略，例如可以但不限于可以通过携带二进制数“1”来指示该UE存储有PCF策略，通过携带二进制数“0”，来指示该UE中没有存储PCF策略。当然本申请不限于此。
S1002：(R)AN执行AMF网元选择流程，以确定新AMF网元。
S1003：(R)AN向新AMF网元发送注册请求消息，该注册请求消息中携带策略存储状态信息。
S1004：具体可参考上述S504～S509，或者上述S704～S708。该过程中，新AMF网元已向PCF网元发送策略控制获取请求消息，且策略控制获取请求消息中携带策略存储状态信息；并且，PCF网元已获取到了UE的策略信息，UE的策略信息用于指示该UE的策略。
S1005：若策略状态信息指示该UE没有存储PCF策略，则PCF网元确定后续需要向该UE发送的策略是需要向该UE配置的所有策略。该所有策略可以通过一次或多次发送。若策略状态信息指示该UE存储有PCF策略，则PCF网元确定后续需要向该UE发送的策略是需要向该UE配置的所有策略中的除S101中的该UE的策略信息所指示的策略之外的策略，其中，PCF网元向该UE配置需要向该UE发送的策略的流程可参考图4，此处不再赘述。另外，在策略状态信息指示该UE存储有PCF策略 的情况下，PCF网元还可以根据上述图5～图6任一附图所描述的技术方案，向该UE发送配置信息。
例如，基于上述表1，假设UE是UE2，则在执行S1004的过程中确定的PCF策略是策略1和策略2。在S1005中，若策略状态信息指示该UE没有存储PCF策略，则PCF网元确定的后续需要向该UE发送的策略是策略1～4。若策略状态信息指示该UE存储有PCF策略，则PCF网元确定的后续需要向该UE发送的策略是策略3～4，并且可以根据图5～图6所示的技术方案，向该UE发送配置信息。
S1006：PCF网元向新AMF网元发送策略控制获取响应消息。
S1007：新AMF网元向UE发送注册响应消息。
在一种可能的实现方式中，S1006中的策略控制获取响应消息和S1007中的注册响应消息中携带PCF网元确定后续需要向该UE发送的策略中的部分或全部。当然本申请不限于此。
需要说明的是，图12所示的注册流程中仅示意了图11所示的技术方案相关的一些步骤，从而说明图11所示的技术方案的一种应用场景。实际实现时，注册流程还可以包括其他步骤。这些步骤在现有技术中已有详细描述，此处不再赘述。
如图13所示，是本申请实施例提供的一种确定PCF网元的方法。该方法可以应用于如图1所示的通信系统中。该方法可以包括如下步骤：
S1101：第一AMF网元向UDM网元发送查询请求消息，UDM网元接收该查询请求消息。其中，该查询请求消息查询第二AMF网元为UE所选择的PCF网元(下文中称为第一PCF网元)的标识信息。该查询请求消息中可以携带该UE的标识信息。
其中，第一AMF网元可以是当前为该UE提供服务的AMF网元。通常，第一AMF网元可以在确定需要执行PCF网元选择流程时，执行S1102。
第二AMF网元和第一AMF网元可以是同一网元，也可以不是同一网元。
若第二AMF网元和第一AMF网元不是同一网元，则在一种实现方式中，第一AMF网元可以是当前为该UE提供服务的AMF网元，第二AMF网元可以是UE先接入的AMF网元。例如，第一AMF网元是上述新AMF网元，第二AMF网元是上述旧AMF网元。在另一种实现方式中，第一AMF网元可以是上述目标AMF网元，第二AMF网元是上述源AMF网元。在另一种实现方式中，第一AMF网元和第二AMF网元可以是同时为该UE提供服务的AMF网元，例如漫游场景中同时为该UE提供服务的两个AMF网元。
若第二AMF网元和第一AMF网元是同一网元，则一个应用场景可以是：第一AMF网元可以是UE开机时(R)AN为该UE选择的AMF网元，第二AMF网元可以是该UE关机之前，(R)AN为该UE选择的AMF网元。通常，两次选择的AMF网元相同。由于UE关机后并不会把存储的策略删掉，之前的PCF下发的策略仍然存在。因此，当UE再开机之后，为该UE选择同一PCF网元时，该PCF网元可以继续维护已向该UE下发的策略。
S1102：UDM网元根据该查询请求消息向第一AMF网元发送第一PCF网元的标识信息，第一AMF网元接收第一PCF网元的标识信息。
实现方式1：UDM网元中存储有AMF网元为UE选择的PCF网元的标识信息。 UDM网元存储的这些PCF网元的标识信息可以是AMF网元在执行PCF网元选择流程之后上报给UDM网元的。在该实现方式中，UDM网元可以在接收到查询请求消息之后，通过查询自身存储的AMF网元为UE选择的PCF网元的标识信息，从而确定第一PCF网元的标识信息。
实现方式2：UDM网元可以在接收到查询请求消息之后，向第二AMF网元网元查询第一PCF网元的标识信息。可以理解的，由于(R)AN执行AMF网元选择流程之后，所选择的AMF网元会到UDM网元进行注册，因此，对于UDM网元来说，其可以获知第二AMF网元的标识信息，从而可以向第二AMF网元查询第一PCF网元的标识信息。
S1103：第一AMF网元在接收到第一PCF网元的标识信息之后，选择第一PCF网元作为为UE提供服务的PCF网元。
本实施例提供的技术方案中，第一AMF网元通过向UDM网元查询第二AMF网元为UE选择的PCF网元的标识信息，从而将该PCF网元作为第一AMF网元为该UE选择的PCF网元。如此，可以有助于避免因先后(或同时)为同一UE提供服务的两个AMF网元所选择的PCF网元不同，或者，同一AMF网元在不同时刻所选择的PCF网元不同，从而导致这两个PCF网元向UE配置的策略不同，使得该UE不知道要执行哪些策略的问题。
可选的，在执行S1103之后，随着UE位置的更换、UE的签约信息的更改等，第一AMF网元可能需要重新为该UE选择PCF网元，该情况下，基于上述实现方式1，该方法还可以包括以下步骤：
S1104：第一AMF网元重新选择第二PCF网元作为为该UE提供服务的PCF网元。
S1105：第一AMF网元将第二PCF网元的标识信息发送给UDM网元，以使UDM网元更新第一AMF网元所选择的为该UE提供服务的PCF网元。
S1106：UDM网元更新第一AMF网元所选择的为该UE提供服务的PCF网元。
该可选的实施例有助于后续为该UE提供服务的AMF网元可以从UDM网元上获取到最新的为该UE提供服务的PCF网元的标识信息，从而有助于避免因先后(或同时)为同一UE提供服务的不同AMF网元所选择的PCF网元不同，或者，同一AMF网元在不同时刻所选择的PCF网元不同，从而导致这两个PCF网元向UE配置的策略不同，使得该UE不知道要执行哪些策略的问题。
上述主要从方法的角度对本申请实施例提供的方案进行了介绍。为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，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，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，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。
本申请实施例可以根据上述方法示例对配置UE的策略的装置(包括PCF网元、第一网元和UE等)，或者，确定PCF网元的装置(包括UDR网元或第一AMF网元等)进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两 个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，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。
如图14所示，为本申请实施例提供的一种PCF网元的结构示意图。图14所示的PCF网元14可以用于执行上文提供的任一种配置UE的策略的方法中相应PCF网元执行的步骤。该PCF网元14可以包括：接收单元1401和发送单元1402。其中，接收单元1401，用于接收第一网元发送的UE的策略信息，UE的策略信息用于指示UE的策略。发送单元1402，用于至少根据UE的策略信息，向该UE发送配置信息；其中，配置信息用于指示该UE更新该UE的策略。第一网元可以是UDR网元或AMF网元。UE的策略信息用于指示该UE的URSP、ANDSP和WLANSP中的至少一种。策略信息还可包括传输状态信息，传输状态信息用于指示策略信息所指示的策略是否已经传输给UE。
例如，结合图3～6任一附图，PCF网元14可以是图3～6任一附图中的PCF网元。接收单元1401可以用于执行S101中的接收步骤。发送单元1402可用于执行S103中的发送步骤。
例如，结合图7，PCF网元14可以是图7中的PCF网元，第一网元可以是图7中的UDR网元。接收单元1401可以用于执行S509中的接收步骤。发送单元1402可以用于执行S510中的发送步骤。
例如，结合图8，PCF网元14可以是图8中的目标PCF网元，第一网元可以是图8中的UDR网元。接收单元1401可以用于执行S607中的接收步骤。发送单元1402可以用于执行S608中的发送步骤。
例如，结合图9，PCF网元14可以是图9中的PCF网元，第一网元可以是图9中的新AMF网元。接收单元1401可以用于执行S707中的接收步骤。发送单元1402可以用于执行S709中的发送步骤。
例如，结合图10，PCF网元14可以是图10中的目标PCF网元，第一网元可以是图10中的目标AMF网元。接收单元1401可以用于执行S805中的接收步骤。发送单元1402可以用于执行S807中的发送步骤。
可选的，配置信息包括第一配置信息，发送单元1402具体可以用于：向该UE发送第一配置信息；其中，第一配置信息用于指示该UE的第一策略，该UE的策略信息所指示的策略不包含第一策略。例如，结合图4，发送单元1402可以用于执行S201中的发送步骤。
可选的，配置信息包括第二配置信息，发送单元1402具体可以用于：向该UE发送第二配置信息；其中，第二配置信息用于指示该UE删除第二策略，该UE的策略信息所指示的策略包含第二策略。例如，结合图5，发送单元1402可以用于执行S301中的发送步骤。
可选的，配置信息包括第三配置信息，发送单元1402具体可以用于：向该UE发送第三配置信息；其中，第三配置信息用于指示该UE更新第三策略，该UE的策略信息所指示的策略包含第三策略。例如，结合图6，发送单元1402可以用于执行S401中的发送步骤。
可选的，发送单元1402还可以用于，向第一网元发送更新指示信息；其中，更新指示信息包含配置信息和配置信息标识的至少一种，配置信息标识用于指示配置信息。例如，结合图4，该更新指示信息可以是图4中的第一更新指示信息，该配置信息可以是图4中的第一配置信息。发送单元1402可以用于执行S203中的发送步骤。例如，结合图5，该更新指示信息可以是图5中的第二更新指示信息，该配置信息可以是图5中的第二配置信息。发送单元1402可以用于执行S303中的发送步骤。
可选的，接收单元1401还可以用于，接收该UE发送的策略存储状态信息；其中，策略存储状态信息用于指示该UE是否存储有PCF策略。该情况下，发送单元1402还可以用于，若策略状态信息指示该UE没有存储PCF策略，则向该UE发送PCF策略。例如，结合图11，接收单元1401可以用于执行S901中的接收步骤。发送单元1402可以用于执行S902中的发送步骤。
可选的，接收单元1401具体可以用于，接收AMF网元发送的策略控制获取请求消息；策略控制获取请求消息中携带策略存储状态信息，AMF网元在接收到UE发送的注册请求消息后，向PCF网元发送策略控制获取请求消息。
本实施例中相关内容的解释可参考上述方法实施例，此处不再赘述。作为一个示例，结合图2所示的通信设备，上述接收单元1401和发送单元1402可以对应图2中的通信接口404。
如图15所示，为本申请实施例提供的一种第一网元的结构示意图。图15所示的第一网元15可以用于执行上文提供的任一种配置UE的策略的方法中相应第一网元执行的步骤。该第一网元15可以包括：发送单元1501。其中，发送单元1501，用于向PCF网元发送UE的策略信息；其中，UE的策略信息用于指示该UE的策略；以指示PCF网元根据UE的策略信息，向UE发送配置信息；其中，配置信息用于指示该UE更新该UE的策略。其中，第一网元15可以是UDR网元或AMF网元。UE的策略信息用于指示该UE的URSP、ANDSP和WLANSP中的至少一种。
例如，结合图3～6任一附图，第一网元15可以是图3～6任一附图中的第一网元。该PCF网元可以是图3～6任一附图中的PCF网元。发送单元1501可以用于执行S101中的发送步骤。
例如，结合图7，第一网元15可以是图7中的UDR网元，该PCF网元可以是图7中的PCF网元。发送单元1501可以用于执行S509中的发送步骤。
例如，结合图8，第一网元15可以是图8中的UDR网元，该PCF网元可以是图8中的目标PCF网元。发送单元1501可以用于执行S607中的发送步骤。
例如，结合图9，第一网元15可以是图9中的新AMF网元，该PCF网元可以是图9中的PCF网元。发送单元1501可以用于执行S707中的发送步骤。
例如，结合图10，第一网元15可以是图10中的新AMF网元，该PCF网元可以是图10中的目标PCF网元。发送单元1501可以用于执行S805中的发送步骤。
可选的，第一网元15还可以包括：接收单元1502和处理单元1503。其中，接收单元1502，用于接收PCF网元发送的更新指示信息；其中，更新指示信息包含配置信息和配置信息标识的至少一种，配置信息标识用于指示配置信息。处理单元1503，用于根据更新指示信息，更新该UE的策略信息。例如，结合图4，该更新指示信息可以 是图4中的第一更新指示信息，该配置信息可以是图4中的第一配置信息。接收单元1502可以用于执行S203中的接收步骤。处理单元1503可以用于执行S204。例如，结合图5，该更新指示信息可以是图5中的第二更新指示信息，该配置信息可以是图5中的第二配置信息。接收单元1502可以用于执行S303中的接收步骤。处理单元1503可以用于执行S304。
可选的，第一网元15是第一AMF网元；接收单元1502还用于，接收第二AMF网元发送的UE的策略信息；其中，第二AMF网元是UE在连接第一AMF网元之前连接的AMF网元。例如，结合图9，第一AMF网元可以是新AMF网元，第二AMF网元可以是旧AMF网元。接收单元1502可以用于执行S705中的接收步骤。例如，结合图10，第一AMF网元可以是目标AMF网元，第二AMF网元可以是源AMF网元。接收单元1502可以用于执行S803中的接收步骤。
可选的，接收单元1502具体可以用于，接收第二AMF网元发送的第一消息；其中，第一消息包括UE的上下文信息和UE的策略信息。例如，结合图9，第一消息可以是UE上下文传递响应消息。例如，结合图10，第一消息可以是将S803中的UE上下文信息和UE的策略信息携带在同一消息的实现方式中的该消息。
本实施例中相关内容的解释可参考上述方法实施例，此处不再赘述。作为一个示例，结合图2所示的通信设备，上述发送单元1501和接收单元1502可以对应图2中的通信接口404，上述处理单元1503可以对应图2中的处理器401或处理器408。
如图16所示，为本申请实施例提供的一种终端装置的结构示意图。其中，图16所示的终端装置16可以用于执行上文提供的任一种配置终端装置的策略的方法中的UE执行的步骤。另外，该终端装置16也可以是芯片。该终端装置16可以包括：发送单元1601和接收单元1602。其中，发送单元1601，用于向PCF网元发送策略存储状态信息，其中，策略存储状态信息用于指示该终端装置是否存储有PCF策略，以指示PCF网元在策略存储状态信息指示该终端装置没有存储PCF策略时，向该终端装置发送PCF策略。接收单元1602，用于接收PCF网元发送的PCF策略。例如，结合图9，发送单元1601可以用于执行S901中的发送步骤。接收单元1602可以用于执行S902中的接收步骤。
可选的，发送单元1601具体可以用于：向AMF网元发送注册请求消息，注册请求消息中携带策略存储状态信息；注册请求消息用于指示AMF网元向PCF网元发送策略控制获取请求消息，其中，策略控制获取请求消息中携带策略存储状态信息。
可选的，发送单元1601具体可以用于：在接收单元1602接收到PCF网元发送的配置信息之后，向PCF网元发送策略存储状态信息；配置信息是PCF网元至少根据该终端装置的策略信息向该终端装置发送的配置信息，配置信息用于指示该终端装置更新该终端装置的策略。
本实施例中相关内容的解释可参考上述方法实施例，此处不再赘述。作为一个示例，结合图2所示的通信设备，上述发送单元1601和接收单元1602可以对应图2中的通信接口404。
如图17所示，为本申请实施例提供的一种UDM网元的结构示意图。图17所示的UDM网元17可以用于执行上文提供的任一种确定PCF网元的方法中的UDM网元 执行的步骤。该UDM网元17可以包括发送单元1701。其中，发送单元1701用于向第一AMF网元发送第一PCF网元的标识信息，以指示第一AMF网元选择第一PCF网元作为为UE提供服务的PCF网元。其中，第一PCF网元是第二AMF网元选择的为该UE提供服务的AMF网元。可选的，第一AMF网元与第二AMF网元可以是同一网元，也可以是不同网元。例如，结合图13，发送单元1701可以用于执行S1102中的发送步骤。
在一种可能的设计中，UDM网元可以包括接收单元1702。其中，接收单元1702用于接收第一AMF网元发送的查询请求消息。该情况下，发送单元1701具体可以用于向第一AMF网元发送查询响应消息，该查询响应消息中携带第一PCF网元的标识信息。例如，结合图13，接收单元1702可以用于执行S1101中的接收步骤。
在一种可能的设计中，发送单元1701还可以用于，在接收单元1702接收到查询请求消息之后，向第二AMF网元发送该查询请求消息，以查询第一PCF网元的标识信息。该情况下，接收单元1702还可以用于，接收第二AMF网元发送的第一PCF网元的标识信息。
在一种可能的设计中，UDM网元中可以存储AMF网元为UE选择的为该UE提供服务的PCF网元的标识信息。其中，AMF网元可以在执行PCF网元选择流程之后，向UDM上报所选择的PCF网元。该情况下，UDM网元接收到查询请求消息之后，可以通过查询本地存储的信息，向第一AMF网元发送第一PCF网元的标识。基于此，可选的，接收单元1702还可以用于接收第二PCF网元的标识信息，其中，第二PCF网元是第一AMF网元重新选择的为该UE提供服务的PCF网元。UDM网元17还可以包括处理单元1703，用于将第一AMF网元选择的为该UE提供服务的PCF网元的标识信息从第一PCF网元的标识信息更新为第二PCF网元的标识信息。例如，结合图13，接收单元1702可以用于执行S1105中的接收步骤。处理单元1703可以用于执行S1106。
本实施例中相关内容的解释可参考上述方法实施例，此处不再赘述。作为一个示例，结合图2所示的通信设备，上述发送单元1701和接收单元1702可以对应图2中的通信接口404。处理单元1703可以对应图2中的处理器401或处理器408。
如图18所示，为本申请实施例提供的一种AMF网元的结构示意图。图18所示的AMF网元18可以用于执行上文提供的任一种确定PCF网元的方法中第一AMF网元执行的步骤。该AMF网元18可以包括接收单元1801和处理单元1802。其中，接收单元1801可以用于接收UDM网元发送的第一PCF网元的标识信息，其中，第一PCF网元是第二AMF网元选择的为该UE提供服务的AMF网元。可选的，AMF网元18与第二AMF网元可以是同一网元，也可以是不同网元。处理单元1802可以用于选择第一PCF网元作为为UE提供服务的PCF网元。例如，结合图13，接收单元1801可以用于执行S1102中的接收步骤。处理单元1802可以用于执行S1103。
在一种可能的设计中，AMF网元18还可以包括发送单元1803，用于向UDM网元发送查询请求消息，其中，查询请求消息用于请求第一PCF网元的标识信息。该情况下，接收单元1801具体可以用于：接收UDM网元发送的查询响应消息，该查询响应消息中携带第一PCF网元的标识信息。例如，结合图13，发送单元1803可以用于 执行S1101中的发送步骤。
在一种可能的设计中，处理单元1802还可以用于：重新选择为该UE提供服务的第二PCF网元。发送单元1803还可以用于向UDM网元发送第二PCF网元的标识信息，以指示UDM网元更新AMF网元18所选择的为该UE提供服务的PCF网元。例如，结合图13，处理单元1802可以用于执行S1104。发送单元1803可以用于执行S1105中的发送步骤。
由于本申请实施例提供的装置(例如PCF网元14、第一网元15、UE16、UDM网元17或AMF网元18)均可以用于执行上述对应的方法，因此其所能获得的技术效果可参考上述方法实施例，本申请实施例在此不再赘述。
本申请实施例还提供了一种配置UE的策略的系统，该系统可以包括第一网元、PCF网元和UE。第一网元用于，向PCF网元发送UE的策略信息；UE的策略信息用于指示该UE的策略。PCF网元用于，接收UE的策略信息，并至少根据UE的策略信息，向该UE发送配置信息；其中，配置信息用于指示该UE更新该UE的策略。该UE用于，接收配置信息，并根据配置信息更新该UE的策略。
在一种可能的设计中，PCF网元用于根据UE的策略信息，向该UE发送配置信息，可以包括：配置信息包括第一配置信息，PCF网元用于向该UE发送第一配置信息；其中，第一配置信息用于指示该UE的第一策略，该UE的策略信息所指示的策略不包含第一策略。
在一种可能的设计中，PCF网元用于根据UE的策略信息，向该UE发送配置信息，可以包括：配置信息包括第二配置信息，PCF网元用于向该UE发送第二配置信息；其中，第二配置信息用于指示该UE删除第二策略，该UE的策略信息所指示的策略包含第二策略。
在一种可能的设计中，PCF网元用于根据UE的策略信息，向该UE发送配置信息，可以包括：配置信息包括第三配置信息，PCF网元用于向该UE发送第三配置信息；其中，第三配置信息用于指示该UE更新第三策略，该UE的策略信息所指示的策略包含第三策略。
在一种可能的设计中，PCF网元还可以用于，向第一网元发送更新指示信息；更新指示信息包含配置信息和配置信息标识的至少一种，配置信息标识用于指示配置信息。该情况下，第一网元还可以用于，接收更新指示信息，并根据更新指示信息更新该UE的策略信息。
在一种可能的设计中，UE还可以用于，向PCF网元发送策略存储状态信息；其中，策略存储状态信息用于指示该UE是否存储有PCF策略。PCF网元还可以用于，接收策略存储状态信息，若策略状态信息指示该UE没有存储PCF策略，则向该UE发送PCF策略。该情况下，该UE还可以用于接收PCF策略。
在一种可能的设计中，UE还可以用于，向PCF网元发送策略存储状态信息，具体可以包括：UE还可以用于，向AMF网元发送注册请求消息，注册请求消息中携带策略存储状态信息；AMF网元用于，接收注册请求消息，并向PCF网元发送策略控制获取请求消息，其中，策略控制获取请求消息中携带策略存储状态信息。
在一种可能的设计中，UE还可以用于向PCF网元发送策略存储状态信息，可以 包括：UE还可以用于在接收到PCF网元发送的配置信息之后，向PCF网元发送策略存储状态信息。
在一种可能的设计中，第一网元是第一AMF网元；该系统还可以包括：第二AMF网元，第二AMF网元是该UE在连接第一AMF网元之前连接的AMF网元。第二AMF网元用于，向第一AMF网元发送UE的策略信息。该情况下，第一AMF网元还可以用于，接收UE的策略信息。
在一种可能的设计中，第二AMF网元用于向第一AMF网元发送UE的策略信息，包括：第二AMF网元用于向第一AMF网元发送第一消息，第一消息包括UE的上下文信息和UE的策略信息。
本申请实施例提供的配置UE的策略的系统中的相关内容的解释及所能获得的技术效果可参考上述方法实施例，在此不再赘述。
本申请实施例还提供了一种确定PCF网元的系统。该系统可以包括：UDM网元、第一AMF网元和第二AMF网元。UDM网元用于，向第一AMF网元发送第一PCF网元的标识信息。第一AMF网元用于，接收UDM网元发送的第一PCF网元的标识信息，并选择第一PCF网元作为为UE提供服务的PCF网元。第一PCF网元是第二AMF网元选择的为该UE提供服务的AMF网元。可选的第一AMF网元与第二AMF网元可以是同一网元，或不同网元。
在一种可能的设计中，第一AMF网元还可以用于，向UDM网元发送查询请求消息，其中，查询请求消息用于请求第一PCF网元的标识信息。该情况下，UDM网元用于，向第一AMF网元发送第一PCF网元的标识信息，具体可以包括：UDM网元用于，向第一AMF网元发送查询响应消息，查询响应消息中携带第一PCF网元的标识信息。
在一种可能的设计中，UDM网元在接收到查询请求消息之后，向第二AMF网元发送该查询请求消息，以查询第一PCF网元的标识信息。UDM网元接收第二AMF网元发送的第一PCF网元的标识信息。
在一种可能的设计中，UDM网元中可以存储AMF网元为UE选择的为该UE提供服务的PCF网元的标识信息。其中，AMF网元可以在执行PCF网元选择流程之后，向UDM上报所选择的PCF网元。该情况下，UDM网元接收到查询请求消息之后，可以通过查询本地存储的信息，向第一AMF网元发送第一PCF网元的标识。基于此，可选的，第一AMF网元还可以用于，重新选择为该UE提供服务的第二PCF网元，并向UDM网元发送第二PCF网元的标识信息。该情况下，UDM网元还可以用于，接收第二PCF网元的标识信息，并将第一AMF网元选择的为该UE提供服务的PCF网元的标识信息从第一PCF网元的标识信息更新为第二PCF网元的标识信息。
本申请实施例提供的确定PCF网元的系统中的相关内容的解释及所能获得的技术效果可参考上述方法实施例，在此不再赘述。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式来实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机执行指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用 计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或者数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可以用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)，光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
尽管在此结合各实施例对本申请进行了描述，然而，在实施所要求保护的本申请过程中，本领域技术人员通过查看所述附图、公开内容、以及所附权利要求书，可理解并实现所述公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。
尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (41)

  1. 一种配置用户设备UE的策略的方法，其特征在于，所述方法包括：
    策略控制功能网元接收第一网元发送的UE的策略信息；其中，所述策略信息用于指示当前已配置给所述UE的策略；
    所述策略控制功能网元至少根据所述UE的策略信息，向所述UE发送配置信息；其中，所述配置信息用于指示所述UE更新所述UE的策略。
  2. 根据权利要求1所述的方法，其特征在于，所述策略控制功能网元至少根据所述UE的策略信息，向所述UE发送配置信息，包括以下至少一个步骤：
    所述配置信息包括第一配置信息，所述策略控制功能网元向所述UE发送所述第一配置信息；其中，所述第一配置信息用于指示所述UE的第一策略，所述策略信息所指示的所述策略不包含所述第一策略；
    所述配置信息包括第二配置信息，所述策略控制功能网元向所述UE发送所述第二配置信息；其中，所述第二配置信息用于指示所述UE删除第二策略，所述策略信息所指示的所述策略包含所述第二策略；
    所述配置信息包括第三配置信息，所述策略控制功能网元向所述UE发送所述第三配置信息；其中，所述第三配置信息用于指示所述UE更新第三策略，所述策略信息所指示的所述策略包含所述第三策略。
  3. 根据权利要求2所述的方法，其特征在于，所述方法还包括：
    所述策略控制功能网元向所述第一网元发送更新指示信息；其中，所述更新指示信息包含所述配置信息和所述配置信息标识的至少一种，所述配置信息标识用于指示所述配置信息。
  4. 根据权利要求1至3任一项所述的方法，其特征在于，所述方法还包括：
    所述策略控制功能网元接收所述UE发送的策略存储状态信息；其中，所述策略存储状态信息用于指示所述UE是否存储有策略控制功能策略；
    若所述策略状态信息指示所述UE没有存储所述策略控制功能策略，则所述策略控制功能网元向所述UE发送所述策略控制功能策略。
  5. 根据权利要求4所述的方法，其特征在于，所述策略控制功能网元接收所述UE发送的策略存储状态信息，包括：
    所述策略控制功能网元接收接入和移动性管理功能网元发送的策略控制获取请求消息；所述策略控制获取请求消息中携带所述策略存储状态信息，所述移动性管理功能网元在接收到所述UE发送的注册请求消息后，向所述策略控制功能网元发送所述策略控制获取请求消息。
  6. 一种配置用户设备UE的策略的方法，其特征在于，所述方法包括：
    第一网元向策略控制功能网元发送UE的策略信息；其中，所述策略信息用于指示当前已配置给所述UE的策略；以指示所述策略控制功能网元至少根据所述策略信息，向所述UE发送配置信息；所述配置信息用于指示所述UE更新所述UE的策略。
  7. 根据权利要求6所述的方法，其特征在于，所述方法还包括：
    所述第一网元接收所述策略控制功能网元发送的更新指示信息；其中，所述更新指示信息包含所述配置信息和所述配置信息标识的至少一种，所述配置信息标识用于 指示所述配置信息；
    所述第一网元根据所述更新指示信息，更新所述UE的策略信息。
  8. 根据权利要求6或7所述的方法，其特征在于，所述第一网元是第一移动性管理功能网元，所述方法还包括：
    所述第一移动性管理功能网元接收第二移动性管理功能网元发送的所述策略信息；其中，所述第二移动性管理功能网元是所述UE在连接所述第一移动性管理功能网元之前连接的移动性管理功能网元。
  9. 根据权利要求8所述的方法，其特征在于，所述第一移动性管理功能网元接收第二移动性管理功能网元发送的所述策略信息，包括：
    所述第一移动性管理功能网元接收所述第二移动性管理功能网元发送的第一消息；其中，所述第一消息包括所述UE的上下文信息和所述策略信息。
  10. 一种配置用户设备UE的策略的方法，其特征在于，所述方法包括：
    UE向策略控制功能网元发送策略存储状态信息，其中，所述策略存储状态信息用于指示所述UE是否存储有策略控制功能策略，以指示所述策略控制功能网元在所述策略存储状态信息指示所述UE没有存储所述策略控制功能策略时，向所述UE发送所述策略控制功能策略；
    所述UE接收所述策略控制功能网元发送的所述策略控制功能策略。
  11. 根据权利要求10所述的方法，其特征在于，所述UE向策略控制功能网元发送策略存储状态信息，包括：
    所述UE向接入和移动性管理功能网元发送注册请求消息，所述注册请求消息中携带所述策略存储状态信息；所述注册请求消息用于指示所述移动性管理功能网元向所述策略控制功能网元发送策略控制获取请求消息，其中，所述策略控制获取请求消息中携带所述策略存储状态信息；
    或者，所述UE在接收到所述策略控制功能网元发送的配置信息之后，向所述策略控制功能网元发送所述策略存储状态信息；其中，所述配置信息是所述策略控制功能网元至少根据所述UE的策略信息向所述UE发送的配置信息，所述策略信息用于指示当前已配置给所述UE的策略，所述配置信息用于更新所述UE的策略。
  12. 一种配置用户设备UE的策略的系统，其特征在于，所述系统包括第一网元、策略控制功能网元；其中：
    所述第一网元用于，向所述策略控制功能网元发送所述UE的策略信息，其中，所述策略信息用于指示当前已配置给所述UE的策略；
    所述策略控制功能网元用于，接收所述策略信息，并至少根据所述策略信息，向所述UE发送配置信息；其中，所述配置信息用于指示所述UE更新所述UE的策略。
  13. 根据权利要求12所述的系统，其特征在于，所述策略控制功能网元用于至少根据所述策略信息，向所述UE发送配置信息，具体包括以下至少一个步骤：
    所述配置信息包括第一配置信息，所述策略控制功能网元向所述UE发送所述第一配置信息；其中，所述第一配置信息用于指示所述UE的第一策略，所述策略信息所指示的所述策略不包含所述第一策略；
    所述配置信息包括第二配置信息，所述策略控制功能网元向所述UE发送所述第 二配置信息；其中，所述第二配置信息用于指示所述UE删除第二策略，所述策略信息所指示的所述策略包含所述第二策略；
    所述配置信息包括第三配置信息，所述策略控制功能网元向所述UE发送所述第三配置信息；其中，所述第三配置信息用于指示所述UE更新第三策略，所述策略信息所指示的所述策略包含所述第三策略。
  14. 根据权利要求13所述的系统，其特征在于，
    所述策略控制功能网元还用于，向所述第一网元发送更新指示信息；其中，所述更新指示信息包含所述配置信息和所述配置信息标识的至少一种，所述配置信息标识用于指示所述配置信息；
    所述第一网元还用于，接收所述更新指示信息，并根据所述更新指示信息更新所述UE的策略信息。
  15. 根据权利要求12至14任一项所述的系统，其特征在于，
    所述系统还包括用户装置UE，所述UE用于，接收所述配置信息，并根据所述配置信息更新所述UE的策略。
  16. 根据权利要求12至15任一项所述的系统，其特征在于，
    所述UE还用于，向所述策略控制功能网元发送策略存储状态信息；其中，所述策略存储状态信息用于指示所述UE是否存储有策略控制功能策略；
    所述策略控制功能网元还用于，接收所述策略存储状态信息，若所述策略状态信息指示所述UE没有存储所述策略控制功能策略，则向所述UE发送所述策略控制功能策略；
    所述UE，还用于接收所述策略控制功能策略。
  17. 根据权利要求16所述的系统，其特征在于，所述UE还用于，向所述策略控制功能网元发送策略存储状态信息，具体包括：
    所述UE还用于，向接入和移动性管理功能网元发送注册请求消息，所述注册请求消息中携带所述策略存储状态信息；所述移动性管理功能网元用于，接收所述注册请求消息，并向所述策略控制功能网元发送策略控制获取请求消息，所述策略控制获取请求消息中携带所述策略存储状态信息；
    或者，所述UE还用于，在接收到所述策略控制功能网元发送的配置信息之后，向所述策略控制功能网元发送所述策略存储状态信息。
  18. 根据权利要求12至16任一项所述的系统，其特征在于，所述第一网元是第一移动性管理功能网元；所述系统还包括：第二移动性管理功能网元，所述第二移动性管理功能网元是所述UE在连接所述第一移动性管理功能网元之前连接的移动性管理功能网元；
    所述第二移动性管理功能网元用于，向所述第一移动性管理功能网元发送所述策略信息；
    所述第一移动性管理功能网元还用于，接收所述策略信息。
  19. 根据权利要求18所述的系统，其特征在于，所述第二移动性管理功能网元用于，向所述第一移动性管理功能网元发送所述策略信息，具体包括：
    所述第二移动性管理功能网元用于，向所述第一移动性管理功能网元发送第一消 息，其中，所述第一消息包括所述UE的上下文信息和所述策略信息。
  20. 一种策略控制功能网元，其特征在于，所述策略控制功能网元包括：
    接收单元，用于接收第一网元发送的UE的策略信息；其中，所述策略信息用于指示当前已配置给所述UE的策略；
    发送单元，用于至少根据所述UE的策略信息，向所述UE发送配置信息；其中，所述配置信息用于指示所述UE更新所述UE的策略。
  21. 根据权利要求20所述的策略控制功能网元，其特征在于，所述发送单元具体用于执行以下至少一个步骤：
    所述配置信息包括第一配置信息，向所述UE发送所述第一配置信息；所述第一配置信息用于指示所述UE的第一策略，所述策略信息所指示的所述策略不包含所述第一策略；
    所述配置信息包括第二配置信息，向所述UE发送所述第二配置信息；所述第二配置信息用于指示所述UE删除第二策略，所述策略信息所指示的所述策略包含所述第二策略；
    所述配置信息包括第三配置信息，向所述UE发送所述第三配置信息；所述第三配置信息用于指示所述UE更新第三策略，所述策略信息所指示的所述策略包含所述第三策略。
  22. 根据权利要求21所述的策略控制功能网元，其特征在于，
    所述发送单元还用于，向所述第一网元发送更新指示信息；其中，所述更新指示信息包含所述配置信息和所述配置信息标识的至少一种，所述配置信息标识用于指示所述配置信息。
  23. 根据权利要求20至22任一项所述的策略控制功能网元，其特征在于，
    所述接收单元还用于，接收所述UE发送的策略存储状态信息；其中，所述策略存储状态信息用于指示所述UE是否存储有策略控制功能策略；
    所述发送单元还用于，若所述策略状态信息指示所述UE没有存储所述策略控制功能策略，则向所述UE发送所述策略控制功能策略。
  24. 根据权利要求23所述的策略控制功能网元，其特征在于，所述接收单元具体用于，接收接入和移动性管理功能网元发送的策略控制获取请求消息；所述策略控制获取请求消息中携带所述策略存储状态信息，所述移动性管理功能网元在接收到所述UE发送的注册请求消息后，向所述策略控制功能网元发送所述策略控制获取请求消息。
  25. 一种第一网元，其特征在于，所述第一网元包括：
    发送单元，用于向策略控制功能网元发送UE的策略信息；其中，所述策略信息用于指示当前已配置给所述UE的策略；以指示所述策略控制功能网元至少根据所述策略信息，向UE发送配置信息；所述配置信息用于指示所述UE更新所述UE的策略。
  26. 根据权利要求25所述的第一网元，其特征在于，所述第一网元还包括：
    接收单元，用于接收所述策略控制功能网元发送的更新指示信息；其中，所述更新指示信息包含所述配置信息和所述配置信息标识的至少一种，所述配置信息标识用于指示所述配置信息；
    处理单元，用于根据所述更新指示信息，更新所述UE的策略信息。
  27. 根据权利要求26所述的第一网元，其特征在于，所述第一网元是第一移动性管理功能网元；
    所述接收单元还用于，接收第二移动性管理功能网元发送的所述策略信息；其中，所述第二移动性管理功能网元是所述UE在连接所述第一移动性管理功能网元之前连接的移动性管理功能网元。
  28. 根据权利要求27所述的第一网元，其特征在于，
    所述接收单元具体用于，接收所述第二移动性管理功能网元发送的第一消息；其中，所述第一消息包括所述UE的上下文信息和所述策略信息。
  29. 一种终端装置，其特征在于，所述终端装置包括：
    发送单元，用于向策略控制功能网元发送策略存储状态信息，其中，所述策略存储状态信息用于指示所述终端装置是否存储有策略控制功能策略，以指示所述策略控制功能网元在所述策略存储状态信息指示所述终端装置没有存储所述策略控制功能策略时，向所述终端装置发送所述策略控制功能策略；
    接收单元，用于接收所述策略控制功能网元发送的所述策略控制功能策略。
  30. 根据权利要求29所述的终端装置，其特征在于，所述发送单元具体用于：
    向接入和移动性管理功能网元发送注册请求消息，所述注册请求消息中携带所述策略存储状态信息；所述注册请求消息用于所述移动性管理功能网元向所述策略控制功能网元发送策略控制获取请求消息，其中，所述策略控制获取请求消息中携带所述策略存储状态信息；
    或者，在所述接收单元接收到所述策略控制功能网元发送的配置信息之后，向所述策略控制功能网元发送所述策略存储状态信息；其中，所述配置信息是所述策略控制功能网元根据所述终端装置的策略信息向所述终端装置发送的配置信息，所述策略信息用于指示当前已配置给所述终端装置的策略，所述配置信息用于指示所述终端装置更新所述终端装置的策略。
  31. 根据权利要求1至11任一项所述的方法，或者权利要求12至19任一项所述的系统，或者权利要求20至24任一项所述的策略控制功能网元，或者权利要求25至28任一项所述的第一网元，或者权利要求29或30所述的终端装置，其特征在于，所述第一网元是统一数据库网元或移动性管理功能网元。
  32. 根据权利要求1至11任一项或者权利要求31所述的方法，或者权利要求12至19任一项或者权利要求31所述的系统，或者权利要求20至24任一项或者权利要求31所述的策略控制功能网元，或者权利要求25至28任一项或者权利要求31所述的第一网元，或者权利要求30或31所述的终端装置，其特征在于，所述策略包括用户设备路由选择策略URSP、接入网发现与选择策略ANDSP和无线局域网选择策略WLANSP中的至少一种。
  33. 一种配置用户设备UE的策略的装置，其特征在于，所述装置用于执行权利要求1至11任一项所述的方法。
  34. 一种计算机可读存储介质，其特征在于，包括计算机指令，当所述计算机指令在计算机上运行时，使得如权利要求1至11任一项所述的方法被执行。
  35. 一种计算机程序产品，其特征在于，所述计算机程序产品中存储有指令，当 其在计算机上运行时，使得计算机可以执行权利要求1-11任一项所述的方法。
  36. 一种策略控制功能网元，其特征在于，包括存储器和处理器，所述存储器用于存储指令；所述处理器用于执行所述指令，使得权利要求1至5任一项所述的方法被执行。
  37. 一种第一网元，其特征在于，包括存储器和处理器，所述存储器用于存储指令；所述处理器用于执行所述指令，使得权利要求6至9任一项所述的方法被执行。
  38. 一种终端装置，其特征在于，包括存储器和处理器，所述存储器用于存储指令；所述处理器用于执行所述指令，使得权利要求10或11所述的方法被执行。
  39. 一种装置，其特征在于，用于执行权利要求1至5任一项所述的方法。
  40. 一种装置，其特征在于，用于执行权利要求6至9任一项所述的方法。
  41. 一种装置，其特征在于，用于执行权利要求10或11所述的方法。
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BR112020014328A2 (pt) 2020-12-08
CN110049485B (zh) 2022-03-29
KR20200108885A (ko) 2020-09-21
US20200344359A1 (en) 2020-10-29
KR102393005B1 (ko) 2022-05-02
CN114827982A (zh) 2022-07-29
US11647124B2 (en) 2023-05-09
JP7184922B2 (ja) 2022-12-06
EP3739920B1 (en) 2023-04-05
JP2021510997A (ja) 2021-04-30
EP3739920A1 (en) 2020-11-18
CN110049485A (zh) 2019-07-23

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