WO2020164562A1 - 一种策略提供方法、装置和系统 - Google Patents

一种策略提供方法、装置和系统 Download PDF

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Publication number
WO2020164562A1
WO2020164562A1 PCT/CN2020/075174 CN2020075174W WO2020164562A1 WO 2020164562 A1 WO2020164562 A1 WO 2020164562A1 CN 2020075174 W CN2020075174 W CN 2020075174W WO 2020164562 A1 WO2020164562 A1 WO 2020164562A1
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WIPO (PCT)
Prior art keywords
terminal
policy
network element
indication information
policy control
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PCT/CN2020/075174
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English (en)
French (fr)
Inventor
周晓云
丁辉
Original Assignee
华为技术有限公司
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Priority claimed from CN201910478290.3A external-priority patent/CN111565385B/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2020164562A1 publication Critical patent/WO2020164562A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/14—Mobility data transfer between corresponding nodes

Definitions

  • This application relates to the field of communication technology, and in particular to a method, device and system for providing strategy.
  • access and mobility management function AMF network elements It can interact with PCF (policy control function) network elements to obtain terminal policies and access and mobility management policies.
  • a roaming user’s terminal is registered to a visited public land mobile network (VPLMN), and the AMF network element located in the terminal’s visited place passes through
  • the PCF (visited-PCF, V-PCF) network element in the visited-PCF (V-PCF) network element of the terminal interacts with the PCF (home-PCF, H-PCF) network element in the home location of the terminal, so that the AMF network element located in the terminal visited can obtain the terminal Strategy, etc.
  • the AMF network element reselection process occurs when the terminal moves.
  • the V-PCF in the PLMN where the new AMF entered after the terminal moves cannot determine whether a terminal policy needs to be issued.
  • H-PCF cannot determine whether it needs to issue a terminal policy.
  • the embodiments of the present application provide a method, device and system for providing a policy to solve the problem that in the roaming scenario in the prior art, when the terminal is initially attached, the terminal moves into the process of reselecting the mobility management network element due to movement.
  • the policy control network element in the PLMN where the new mobility management network element is located is not sure whether it needs to issue a terminal policy.
  • a method for providing a policy includes: when the terminal moves across a public land mobile network to a fifth-generation mobile communication system, the terminal sends registration request information, and the registration request message carries the information used to instruct the network to provide The first indication information of the terminal strategy, and then the terminal receives the terminal strategy of the first strategy control function network element from the first visited network.
  • the mobility management network element reselection occurs due to the terminal movement, and the policy control network element in the PLMN where the new mobility management network element entered by the terminal moves is uncertain whether it needs to download The issue of the terminal’s strategy.
  • the terminal sending the registration request information specifically includes: the terminal sending the registration request message to the mobility management network element of the first visited network; the mobility management network element sending the second indication information and the first indication information Give the first policy control function network element.
  • the second indication information is used to instruct the terminal to move across the public land mobile network, to instruct the mobility management network element to reselect, or to instruct the visited network to provide a terminal strategy.
  • the first indication information is specifically used to instruct the visited network to provide terminal policies.
  • the terminal sending the registration request information specifically includes: the terminal sends a registration request message to the mobility management network of the first visited network Then, the mobility management network element sends the first indication information to the first policy control function network element.
  • the first indication information may specifically be: terminal policy indication, terminal policy fragment identification, indication supporting access network discovery and selection strategy, indication not supporting access network discovery and selection strategy, operation At least one of the system identification, or the terminal status indication information that is set to blank.
  • a policy providing method includes: a first policy control function network element of a first visited network receives first indication information from a terminal, and the first indication information is used to instruct the network to provide Terminal strategy.
  • the first policy control function network element determines to provide a terminal policy to the terminal according to the first indication information.
  • it further includes: the first policy control function network element receiving second indication information and first indication information from the mobility management network element of the first visited network, and the second indication information is used for Instruct the terminal to move across a public land mobile network, to instruct the mobility management network element to reselect, or to instruct the visited network to provide a terminal strategy.
  • the first indication information is specifically used to instruct the visited network to provide a terminal policy
  • the first policy control function network element receiving the first indication information from the terminal specifically includes: the first policy control function network element Receiving the first indication information from the mobility management network element of the first visited network.
  • the first policy control function network element sends a second request message for creating a terminal policy association to a second policy control network element at the home location, and the second request message carries The third indication information, so that the second policy control network element does not provide a terminal policy according to the third indication information, or updates the terminal policy according to the operator's policy.
  • the third indication information includes any one of an indication that a terminal policy is not required to be provided, an indication of a mobility management network element reselection, or an indication of moving across a public land mobile network.
  • the first policy control function network element sends a second request message for creating a terminal policy association to a second policy control network element at the home location, where the second request message does not Carrying fourth indication information for instructing the network to provide a terminal policy, so that the second policy control network element does not provide a terminal policy or updates the terminal policy according to the operator's policy.
  • the first policy control function network element sending a second request message for creating a terminal policy association to the second policy control network element at the home location specifically includes: the first policy control function network element according to the first One instruction information, or send a second request message for creating a terminal policy association to the second policy control network element according to the first instruction information and the second instruction information.
  • it further includes: in the initial registration process or the terminal registration from the evolved packet system to the fifth-generation mobile communication system, the third policy control network element of the second visited place receives the third policy control network element from the 2.
  • a third request message for establishing a terminal policy association of the mobility management network element in the visited place, and the third request message carries the fourth indication information; the third policy control network element sends a message for creating terminal policy association
  • the fourth request message to the fourth policy control network element in the home area.
  • the fourth request message carries fourth indication information, and the fourth indication information is used to enable the fourth policy control network element to provide a terminal policy.
  • sending the fourth indication information by the third policy control network element to the fourth policy control network element specifically includes: not including the terminal status indication in the third request message received by the third policy control network element In the case of information, the third policy control network element sends the fourth indication information to the fourth policy control network element.
  • the fourth indication information may specifically be: initial registration indication, registration indication for moving from the evolved packet system to the fifth generation mobile communication system, terminal policy segment identification, operating system identification, and access support Any one of the indication of the network discovery and selection strategy, the indication that the access network discovery and selection strategy is not supported, or the terminal status indication information that is set to blank.
  • the first indication information may specifically be: terminal strategy segment identification, operating system identification, an indication of supporting access network discovery and selection strategies, or an indication that does not support access network discovery and selection strategies Indicate, or, any one of the terminal status indication information that is set to null.
  • a method for providing a policy which includes: when the terminal moves across the public land mobile network to the fifth-generation mobile communication system, the terminal sends registration request information to the mobility management network element of the first visited place, The registration request message carries first indication information for instructing the network to provide a terminal policy.
  • the first policy control function network element of the first visited network receives the first indication information from the mobility management network element.
  • the first policy control function network element determines to provide a terminal policy to the terminal according to the first indication information.
  • a policy providing system including: a first policy control function network element including a terminal and a first visited network.
  • the terminal is used to send registration request information to the mobility management network element in the first visited place when the terminal moves across the public land mobile network to the fifth-generation mobile communication system, and the registration request message carries the information used to instruct the network to provide the terminal The first indication of the strategy.
  • the first policy control function network element is configured to receive first indication information from the mobility management network element, and determine to provide a terminal policy to the terminal according to the first indication information.
  • another method for policy provision includes: a first policy control function network element of a first visited network receives a first policy control function network element of a first visited network for creating a terminal policy association.
  • a request message the first request message carries movement type indication information, and the movement type indication information includes instructions for instructing the terminal to move across a public land mobile network and instructions for instructing the terminal to execute a public land mobile network One of the moves within.
  • the first policy control function network element determines whether to provide a terminal policy according to the movement type indication information.
  • the mobility management network element reselection occurs due to the terminal movement, and the policy control network element in the PLMN where the new mobility management network element entered by the terminal moves is uncertain whether it needs to download The issue of the terminal’s strategy.
  • the first policy control function network element determining whether to provide a terminal policy according to the movement type indication information specifically includes: when the movement type indication information is used to instruct the terminal to perform a cross-public land mobile network movement In the case of, the first policy control function network element determines to provide a terminal policy.
  • the first strategy control function network element to determine whether to provide a terminal policy according to the movement type indication information specifically includes: in the movement type indication information for indicating that the terminal has performed in the public land mobile network In the case of movement, the first policy control function network element determines not to provide a terminal policy.
  • the method further includes: the first policy control function network element sending a second request message for creating a terminal policy association to a second policy control network element at the home location of the terminal, the second request message It carries the indication information that the terminal policy does not need to be sent, so that the second policy control network element does not provide the terminal policy according to the indication information that the terminal policy does not need to be sent or updates the terminal policy according to the operator's policy.
  • the instruction information that does not need to send the terminal policy may specifically be: the terminal policy instruction does not need to be sent, the mobility management network element reselection instruction, the inter-public land mobile network movement instruction, or the public land mobile network movement At least one of the instructions.
  • the method further includes: the first policy control function network element sending a second request message for creating a terminal policy association to a second policy control network element at the home location of the terminal, the second request The message does not carry an instruction to request the terminal policy, so that the second policy control network element does not provide the terminal policy or updates the terminal policy according to the operator's policy.
  • the first policy control function network element sending a second request message for creating a terminal policy association to the second policy control network element specifically includes: the first policy control function network element according to the mobile The type indication information sends a second request message for creating a terminal policy association to the second policy control network element.
  • the method further includes: in the initial registration process or the terminal registration from the evolved packet system to the fifth generation mobile communication system, the third policy control network element of the second visited place receives the first 2.
  • a third request message used to create a terminal policy association of the mobility management network element in the visited place the third request message carries an instruction to request the terminal policy, and the third policy control network element sends a message for creating a terminal policy association
  • the fourth request message is to a fourth policy control network element at the home location of the terminal, and the fourth request message carries an indication of the requested terminal policy.
  • the indication of requesting a terminal policy is used to enable the fourth policy control network element to provide a terminal policy.
  • the third policy control network element of the second visited place sending an instruction requesting the terminal policy to the fourth policy control network element specifically includes: the third request received at the third policy control network element If the message does not include the terminal status indication information, the third policy control network element sends the instruction requesting the terminal policy to the fourth policy control network element.
  • the instruction for requesting the terminal policy may specifically be: initial registration instruction, registration instruction for moving from the evolved packet system to the fifth-generation mobile communication system, terminal policy segment identification, operating system identification, support for access Any one of the indication of the network access discovery and selection strategy, the indication that the access network discovery and selection strategy is not supported, or the terminal status indication information that is left blank.
  • another method for policy provision including: the mobility management network element of the first visited network sends a first request message for creating a terminal policy association to the first policy control network of the first visited network
  • the first request message carries movement type indication information, and the movement type indication information includes instructions for instructing the terminal to move across a public land mobile network, and instructions for instructing the terminal to move within a public land mobile network one of the.
  • the first policy control network element receives the first request message, and determines whether to provide a terminal policy according to the movement type indication information.
  • the mobility management network element of the first visited network determines the movement type of the terminal.
  • another policy providing system including: a mobility management network element of the first visited network and a policy control network element of the first visited network.
  • the mobility management network element sends a first request message for creating a terminal policy association to the first policy control network element.
  • the first request message carries movement type indication information, and the movement type indication information includes information used to instruct the terminal to perform a cross-public land mobile network movement and to instruct the terminal to perform a movement within a public land mobile network.
  • the first policy control network element receives the first request message, and determines whether to provide a terminal policy according to the movement type indication information.
  • another method for policy provision includes: a first policy control network element of a first visited network receives a first policy control network element from a mobility management network element of the first visited network for creating a terminal policy association.
  • a request message the first request message carries movement type indication information, the movement type indication information includes instructions for indicating that the terminal has performed mobility management network element reselection, the terminal has performed cross-public land mobile network movement, and The terminal performed one of the movements within the public land mobile network.
  • the first policy control function network element sends a second request message for creating a terminal policy association to a second policy control network element at the home location of the terminal, and the second request message carries indication information that the terminal policy is not required or does not carry a request
  • the indication information of the terminal strategy so that the second strategy control network element does not provide the terminal strategy or updates the terminal strategy according to the operator's strategy.
  • the mobility management network element reselection occurs due to the movement of the terminal, and the policy control network element at the home location of the terminal is uncertain whether the terminal policy needs to be issued.
  • the specific form of the indication information that the terminal policy is not required is the same as the specific form of the indication information that the terminal policy is not required as described in the fifth aspect.
  • the specific form of the instruction information requesting the terminal policy is the same as the instruction information requesting the terminal policy described in the fifth aspect.
  • the third policy control network element of the second visited place receives the third policy control network element from the 2.
  • a third request message used to create a terminal policy association of the mobility management network element of the visited place the third request message carries indication information for requesting a terminal policy; the third policy control network element sends a message for creating a terminal policy association
  • the fourth request message to the fourth policy control network element in the home area.
  • the fourth request message carries indication information of the requested terminal policy, and is used to enable the fourth policy control network element to provide the terminal policy.
  • the second visited place may be the same as or different from the first visited place.
  • the third policy control network element sending the instruction information requesting the terminal policy to the fourth policy control network element specifically includes: excluding the terminal in the third request message received by the third policy control network element In the case of status indication information, the third policy control network element sends the indication information requesting the terminal policy to the fourth policy control network element.
  • the embodiment of the present application provides a policy providing system, which includes a first policy control network element of a first visited network and a second policy control network element of a terminal home location.
  • the first policy control network element of the first visited network is configured to receive a first request message for creating a terminal policy association from the mobility management network element of the first visited network, and the first request message carries the mobility type Indication information, the movement type indication information includes instructions for instructing the terminal to perform mobility management network element reselection, the terminal to perform cross-public land mobile network mobility, and the terminal to perform intra-public land mobile network mobility one of.
  • the first policy control function network element is used to send a second request message for creating a terminal policy association to a second policy control network element at the home location of the terminal, and the second request message carries indication information that the terminal policy is not required or It does not carry the instruction information requesting the terminal policy, so that the second policy control network element does not provide the terminal policy or updates the terminal policy according to the operator's policy.
  • the specific implementation is the same as the strategy provision method described in the eighth aspect.
  • the second policy control network element does not provide a terminal policy according to the third indication information, or updates the terminal policy according to the operator’s policy specifically includes: If it is determined that the content of the terminal policy of the home area needs to be updated, the updated terminal policy of the home area is sent; or, if it is determined that the content of the terminal policy of the home area does not need to be updated according to the policy of the operator, the second policy control network element does not Provide terminal strategy.
  • an embodiment of the present application provides a communication device that is capable of implementing the method embodiments provided by any one of the first aspect or the second aspect, or the fifth aspect or the eighth aspect. Perform the main function.
  • This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • a communication device including: a processor and a memory; the memory is used to store computer execution instructions, and when the communication device is running, the processor executes the computer execution instructions stored in the memory to enable The communication device executes the policy providing method provided in any one of the first aspect or any one of the second aspect or any one of the fifth aspect or the eighth aspect.
  • a computer-readable storage medium stores instructions that, when run on a computer, enable the computer to execute any one of the first aspect or any of the second aspect.
  • One or any of the fifth aspect provides a strategy provision method.
  • a computer program product containing instructions which when running on a computer, enables the computer to execute any one of the above-mentioned first aspect or any one of the second aspect or any one of the fifth aspect.
  • the strategy provides methods.
  • a device for example, the device may be a chip system
  • the device includes a processor for supporting the device to implement any one of the first aspect or any one of the second aspects or the fifth aspect. Aspect or the function involved in any one of the eighth aspect.
  • the device further includes a memory for storing necessary program instructions and data of the device.
  • the device is a chip system, it can be composed of chips, or include chips and other discrete devices.
  • Figure 1 is a schematic diagram of a 5G network architecture in an existing hometown routing roaming scenario
  • Figure 2 is a schematic diagram of a 5G network architecture in an existing local grooming roaming scenario
  • FIG. 3 is a schematic diagram 1 of the structure of the policy control system provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram 2 of the structure of the policy control system provided by the embodiment of the application.
  • FIG. 5 is a schematic diagram of the hardware structure of a communication device provided by an embodiment of the application.
  • FIG. 6 is a method flowchart 1 of the policy providing method provided by an embodiment of the application.
  • FIG. 7 is the second method flowchart of the strategy providing method provided by the embodiment of this application.
  • FIG. 8 is a first structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 9 is a second structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 10 is a third structural diagram of a communication device provided by an embodiment of this application.
  • the network architecture includes the VPLMN of the terminal and the home public land mobile network (HPLMN) of the terminal.
  • the terminal is currently located in the terminal’s VPLMN.
  • the terminal’s VPLMN includes access equipment, user plane function (UPF) 1 network element, AMF network element, and the visited-session management function network element (visited-session). management function, SMF) network element, V-PCF network element, or visited-unified data repository (V-UDR), etc.;
  • the HPLMN of the terminal includes UPF2 network element and home-SMF (home-SMF).
  • H-SMF home-SMF
  • H-SMF home-UDR
  • H-PCF home-UDR
  • UDM application function
  • UDM application function
  • the terminal accesses the 5G network through the access device, and the terminal communicates with the AMF network element through the next generation network (next generation, N) interface 1 (referred to as N1); the access device communicates with the AMF network element through the N2 interface (referred to as N2) , Communicate with UPF1 network element through N3 interface (abbreviated as N3); AMF network element communicates with V-SMF network element through N11 interface (abbreviated as N11), communicate with V-PCF network element through N15 interface (abbreviated as N15), and through N8 interface (N8 for short) communicate with UDM network elements; V-SMF network elements communicate with H-SMF network elements through N16 interface (N16 for short), communicate with V-PCF network elements through N7 interface (N7 for short), and communicate with V-PCF network elements through N4 interface (for short) N4) communicate with UPF1 network element; UPF1 network element communicates with UPF2 network element through N9 interface (abbreviated as N9);
  • the AMF network element, V-SMF network element, H-SMF network element, V-PCF network element, H-PCF network element or UDM network element and other control plane network elements in the 5G network shown in Figure 1 You can also interact with a service-oriented interface.
  • the servicing interface provided by the AMF network element to the outside can be Namf; the servicing interface provided by the V-SMF network element can be Nvsmf; the servicing interface provided by the H-SMF network element can be Nhsmf; the H-PCF network element
  • the servicing interface provided externally may be Nhpcf; the servicing interface provided by the V-PCF network element may be Nvpcf; the servicing interface provided by the UDM network element may be Nudm, etc.
  • 5G system architecture 5G system architecture diagram in the 23501 standard, which will not be repeated here.
  • the network architecture includes the terminal's VPLMN and terminal's HPLMN.
  • the terminal is currently located in the VPLMN of the terminal, and the VPLMN of the terminal includes access equipment, UPF network elements, AMF network elements, SMF network elements, V-PCF network elements, V-UDR network elements, or AF network elements, etc.
  • the HPLMN of the terminal includes H-PCF network elements, UDM network elements, or H-UDR network elements.
  • the terminal accesses the 5G network through the access device, and the terminal communicates with the AMF network element through N1;
  • the access device communicates with the AMF network element through N2, and communicates with the UPF network element through N3;
  • the AMF network element communicates with the SMF network element through N11 , Communicate with V-PCF network element through N15, communicate with UDM network element through N8;
  • SMF network element communicate with V-PCF network element through N7, communicate with UPF network element through N4, and communicate with UDM network element through N10;
  • UPF network The element accesses the data network through the N6 interface (N6 for short);
  • the V-PCF network element communicates with the H-PCF network element through N24, and communicates with the AF network element through N5;
  • the V-UDR network element communicates with the V-PCF network element;
  • H -UDR network element communicates with H-PCF network element.
  • Control plane network elements can also interact with service-oriented interfaces.
  • the service-oriented interface provided by the AMF network element to the outside can be Namf; the service-oriented interface provided by the SMF network element can be Nsmf; the service-oriented interface provided by the V-SMF network element can be Nvsmf; the H-SMF network element can provide it to the outside world
  • the service interface of H-PCF network element can be Nhsmf; the service interface provided by H-PCF network element can be Nhpcf; the service interface provided by V-PCF network element can be Nvpcf; the service interface provided by UDM network element can be Nudm ,Wait.
  • 5G system architecture 5G system architecture
  • the 5G network architecture shown in Figure 1 or Figure 2 is only an example of a VPLMN.
  • the terminal may also move from one VPLMN to another.
  • the 5G network architecture shown in FIG. 1 or FIG. 2 is only an example of including an AMF network element, V-SMF network element, V-PCF network element, or V-UDR network element in one VPLMN.
  • a VPLMN can include multiple AMF network elements, multiple V-SMF network elements, multiple V-PCF network elements, or multiple V-UDR network elements.
  • Different AMF network elements can pass through the N14 interface (N14 for short) ) Communication; different V-PCF network elements can communicate through N24, etc., for details, please refer to the description of the existing 5G network architecture, which will not be repeated here.
  • the 5G network architecture shown in FIG. 1 or FIG. 2 is only an example by taking an H-PCF network element or an H-UDR network element included in the HPLMN as an example.
  • HPLMN can include multiple H-PCF network elements or H-UDR network elements, and different H-PCF network elements can communicate through N24, etc., for details, please refer to the description of the existing 5G network architecture. Do not repeat it.
  • the terminals involved in the embodiments of this application may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to wireless modems with wireless communication functions; Including subscriber unit (subscriber unit), cellular phone (cellular phone), smart phone (smart phone), wireless data card, personal digital assistant (PDA) computer, tablet computer, wireless modem (modem), handheld device (handheld), laptop (laptop computer), cordless phone (wireless local loop, WLL) station, machine type communication (MTC) terminal, user equipment (user equipment) , UE), mobile station (mobile station, MS), terminal device (terminal device) or relay user equipment, etc.
  • the relay user equipment may be, for example, a 5G residential gateway (RG).
  • RG 5G residential gateway
  • the access devices involved in the embodiments of this application refer to devices that access the core network, such as base stations, broadband network service gateways (BNG), aggregation switches, and non-third-generation cooperation Partnership project (3rd generation partnership project, 3GPP) access equipment, etc.
  • the base station may include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), relay stations, access points, and so on.
  • At least one item (a) refers to any combination of these items, including any combination of a single item (a) or plural items (a).
  • at least one item (a) of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .
  • words such as “first” and “second” are used to distinguish the same items or similar items with substantially the same function and effect. Those skilled in the art can understand that words such as “first” and “second” do not limit the quantity and execution order, and words such as “first” and “second” do not limit the difference.
  • a policy providing system 30 provided by this embodiment of the application includes a mobility management network element 301 of a first visited network and a first policy control network of the first visited network. Yuan 302.
  • the mobility management network element 301 is configured to send a first request message for creating a terminal policy association to the first policy control network element 302, and the first request message carries movement type indication information, and the movement type indication
  • the information includes one of instructing the terminal to perform a movement across a public land mobile network and instructing the terminal to perform a movement within a public land mobile network.
  • the movement type indication information is used to indicate that the terminal has performed a movement across a public land mobile network, or the indication information is used to indicate that the terminal has performed a movement within a public land mobile network.
  • the first policy control network element 302 is configured to receive a first request message from the mobility management network element 301, and determine whether to provide a terminal policy according to the movement type indication information carried therein. Moving across a public land mobile network and moving within a public land mobile network in the present invention refers to moving in a 5G system.
  • the mobility management network element 301 and the first policy control network element 302 may communicate directly, or communicate through the forwarding of other devices, which is not specifically limited in the embodiment of the present application.
  • the mobility management network element reselection here can be the mobility management network element reselection caused by the terminal moving from V-PLMN1 to V-PLMN2 (also called cross-PLMN movement); it can also be the terminal moving inside V-PLMN1 (It can also be called the mobility management network element reselection caused by the movement within the V-PLMN; it can also be the mobility management network element reselection caused by the cross-system movement of the terminal, for example, from the evolved packet system (Evolved Packet System). , EPS) moved to the 5th generation wireless systems (5GS).
  • Evolved Packet System evolved Packet System
  • 5GS 5th generation wireless systems
  • the mobility management network element 301 and the first policy control network element 302 are in the V-PLMN2.
  • the mobility management network element 301 and the first policy control network element 302 are in the V-PLMN1.
  • the mobility network element reselection caused by the terminal moving from EPS to 5GS the mobility network element reselects from the mobility management entity (MME) in EPS to the mobility management network in 5GS yuan.
  • MME mobility management entity
  • the policy control network element of the visited place can follow the instructions Information to determine whether to send a terminal policy.
  • the policy control system 30 may further include a second policy control network element 303 at the home location of the terminal.
  • the first policy control network element 302 is configured to send a second request message for creating a terminal policy association to the second policy control network element 303, and the second request message does not carry the request terminal policy Instructions.
  • the second policy control network element 303 is configured to receive a second request message from the first policy control network element 302. In the case where it is determined that the second request message does not carry an indication requesting a terminal policy, the second policy control network Element 303 does not provide terminal policies or updates terminal policies according to the operator's policy.
  • the instructions for requesting the terminal policy may be: initial registration instructions, registration instructions for moving from the evolved packet system to the fifth generation mobile communication system, terminal policy fragment identification, operating system identification, support for access network discovery and selection strategies (Access Network Discovery and Selection (ANDSP) instructions, or any one of the instructions that ANDSP is not supported.
  • the second policy control network element 303 does not provide a terminal policy, or updating the terminal policy according to the operator’s policy specifically includes: if it is determined according to the operator’s policy that the content of the terminal policy at the home location needs to be updated, sending The updated terminal policy of the home location; or, if it is determined according to the operator's policy that there is no need to update the content of the terminal policy of the home location, the second policy control network element does not provide the terminal policy.
  • the operator policy may be, for example, updating the terminal policy according to the location of the UE or the current time.
  • the first policy control network element 302 is configured to send a second request message for creating a terminal policy association to the second policy control network element 303, and the second request message carries that it does not need to be sent.
  • the terminal policy indication information In the case where it is determined that the second request message carries the indication information that the terminal policy does not need to be sent, the second policy control network element 303 does not provide the terminal policy or updates the terminal policy according to the operator's policy.
  • the indication information that the terminal policy does not need to be sent includes at least one of an indication that the terminal policy does not need to be sent, a mobility management network element reselection indication, a cross-public land mobile network movement indication, or a public land mobile network movement indication.
  • the second policy control network element 303 does not provide a terminal policy, or updating the terminal policy according to the operator’s policy specifically includes: if it is determined according to the operator’s policy that the content of the terminal policy at the home location needs to be updated, sending The updated terminal policy of the home location; or, if it is determined according to the operator's policy that there is no need to update the content of the terminal policy of the home location, the second policy control network element does not provide the terminal policy.
  • the operator policy may be, for example, updating the terminal policy according to the location of the UE or the current time.
  • the first policy control network element in the visited place sends a second request message that does not carry an instruction to request the terminal policy to the second policy control network element in the home place, or sends a Sending the second request message indicating the terminal policy information, so that the second policy control network element in the home area can also determine whether the terminal policy needs to be issued or only update the terminal policy according to the operator's policy.
  • a policy providing system 40 provided in this embodiment of the application, the policy control system 40 includes a terminal 401 and a first policy control network element 402 of the terminal's first visited network.
  • the terminal 401 is configured to send registration request information to the mobility management network element of the first visited place of the terminal when the terminal moves across the public land mobile network to the fifth generation mobile communication system, and the registration request message carries
  • the first indication information is used to instruct the network to provide a terminal policy.
  • the first policy control function network element 402 of the first visited network is configured to receive the first indication information from the mobility management network element; and determine to provide the terminal policy to the terminal according to the indication information.
  • the terminal 401 and the mobility management network element of the first visited place, and the mobility management network element of the first visited place and the first policy control network element 402 can communicate directly or Communication is performed through forwarding of other devices, which is not specifically limited in this embodiment of the present application.
  • the first policy control network element of the visited network since the first policy control network element of the visited network receives the first instruction information for instructing the network to provide the terminal policy, the first policy control network element can then follow the first instruction Information to determine whether to send a terminal policy.
  • the first policy control function network element is configured to receive second indication information and the first indication information from the mobility management network element, and the second indication information is used to instruct the terminal to perform A terminal strategy used to indicate movement across a public land mobile network, to indicate that the mobility management network element has reselected, or to indicate that the terminal needs to visit the network.
  • the first policy control function network element is configured to determine to provide a terminal policy to the terminal according to the second indication information and the first indication information.
  • the first indication information may specifically be: terminal policy indication, terminal policy fragment identification, indication supporting access network discovery and selection strategy, indication not supporting access network discovery and selection strategy, operating system identification, or blank At least one of the terminal status indication information is not specifically limited in this application, as long as it can instruct the network to provide a terminal policy.
  • the second indication information is used to indicate that the mobility management network element has reselected, or in other words, indicate that the mobility management network element has reselected, which may be expressed in English as: AMF relocation. There is no specific limitation here.
  • the first indication information is used to indicate that the terminal requires a terminal policy of the VPLMN.
  • the first policy control function network element is configured to determine to provide the terminal policy to the terminal according to the first indication information.
  • the policy control system 40 provided in the embodiment of the present application may further include a second policy control network element 403 at the home location of the terminal.
  • the first policy control network element 402 is configured to send a second request message for creating a terminal policy association to the second policy control network element 403, and the second request message does not carry the fourth indication information.
  • the second policy control network element 403 is configured to receive a second request message from the first policy control network element 402, and when it is determined that the second request message does not carry the fourth indication information, the second policy control network element 403 does not provide terminal policies or updates terminal policies according to operator policies.
  • the fourth indication information may be: initial registration indication, registration indication for moving from an evolved packet system to a fifth-generation mobile communication system, terminal policy segment identification, operating system identification, and indication supporting ANDSP, indication not supporting ANDSP, Or, any one of the terminal status indication information that is set to null.
  • the first policy control network element 402 is configured to send a second request message for creating a terminal policy association to the second policy control network element 403, and the second request message carries a third indication Information, in the case where it is determined that the second request message carries the third indication information, the second policy control network element 403 does not provide a terminal policy or updates the terminal policy according to the operator’s policy.
  • the second policy control network element 403 does not provide a terminal policy, or updating the terminal policy according to the operator’s policy specifically includes: if it is determined according to the operator’s policy that the content of the terminal policy at the home location needs to be updated, sending The updated terminal policy of the home location; or, if it is determined according to the operator's policy that there is no need to update the content of the terminal policy of the home location, the second policy control network element does not provide the terminal policy.
  • the operator policy may be, for example, updating the terminal policy according to the location of the UE or the current time.
  • the first policy control network element in the visited place sends a second request message that does not carry the fourth instruction information to the second policy control network element in the home place, or sends a third instruction
  • the second request message for information enables the second policy control network element in the home area to also determine whether it is necessary to issue a terminal policy or update the terminal policy according to the operator's policy.
  • the policy providing system shown in Figure 3 or Figure 4 can be applied to the 5G network architecture in the home routing roaming scenario shown in Figure 1 or the 5G network architecture in the local grooming roaming scenario shown in Figure 2. It can also be applied to other roaming network architectures that will appear in the future, which is not specifically limited in the embodiment of the present application.
  • the network element or entity corresponding to the mobility management network element 301 in FIG. 3 may be the AMF network element in the VPLMN in the above 5G network architecture; the first policy control network element 302 or diagram of the visited network in FIG. 3
  • the network element or entity corresponding to the first policy control network element 402 in 4 may be a V-PCF network element in the VPLMN in the above 5G network architecture, which is not specifically limited in the embodiment of the present application.
  • the mobility management network element 301 in FIG. 3 or the first policy control network element 302 of the visited network in the embodiment of the present application, or the first policy control network element 402 in FIG. 4 may be implemented by one device. It may be implemented jointly by multiple devices, or may be a functional module in one device, which is not specifically limited in the embodiment of the present application. It is understandable that the above-mentioned functions may be network elements in hardware devices, software functions running on dedicated hardware, or virtualization functions instantiated on a platform (for example, a cloud platform).
  • FIG. 5 shows a schematic diagram of the hardware structure of a communication device provided by an embodiment of the application.
  • the communication device 500 includes a processor 501, a communication line 502, and at least one communication interface (in FIG. 5 only the communication interface 504 is taken as an example for illustration), and optionally, a memory 503 is also included.
  • the processor 501 may be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more programs for controlling the execution of the program of this application. integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • the communication line 502 may include a path to transmit information between the aforementioned components.
  • Communication interface 504 which uses any device such as a transceiver to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .
  • RAN radio access network
  • WLAN wireless local area networks
  • the processor 501 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 5.
  • a memory 503 is further included.
  • the memory 503 may exist independently and is connected to the processor through a communication line.
  • the memory 503 may also be integrated with the processor 501.
  • the memory 503 may be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions
  • the dynamic storage device can also be electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), CD-ROM (Compact Disc Read-Only Memory, CD-ROM) or other optical disc storage, optical disc storage (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 codes in the form of instructions or data structures and can be used by a computer Any other media accessed, but not limited to this.
  • the memory 503 may store the program code, and transmit the program code to the processor 501, so that the processor 501 implements the embodiments of the present application according to the instructions of the program code.
  • the communication device 500 may include multiple processors, such as the processor 501 and the processor 508 in FIG. 5.
  • processors can be a single-CPU (single-CPU) processor or a multi-core (multi-CPU) processor.
  • the processor may include, but is not limited to, at least one of the following: central processing unit (CPU), microprocessor, digital signal processor (DSP), microcontroller (microcontroller unit, MCU), or artificial intelligence
  • CPU central processing unit
  • DSP digital signal processor
  • MCU microcontroller unit
  • computing devices such as processors that run software.
  • Each computing device may include one or more cores for executing software instructions to perform operations or processing. .
  • the communication device 500 may further include an output device 505 and an input device 506.
  • the output device 505 communicates with the processor 501 and can display information in a variety of ways.
  • the output device 505 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector (projector) Wait.
  • the input device 506 communicates with the processor 501 and can receive user input in a variety of ways.
  • the input device 506 may be a mouse, a keyboard, a touch screen device, or a sensor device.
  • the aforementioned communication device 500 may be a general-purpose device or a special-purpose device.
  • the communication device 500 may be a desktop computer, a portable computer, a network server, a PDA (personal digital assistant, PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or a similar structure in Figure 5 equipment.
  • PDA personal digital assistant
  • the embodiment of the present application does not limit the type of the communication device 500.
  • the mobility management network element 301 and the first policy control network element 302 in FIG. 3 may be the devices shown in FIG. 5, and the memory of the mobility management network element 301 or the first policy control network element 302 stores One or more software modules.
  • the mobility management network element 301 or the first policy control network element 302 may implement a software module through a processor and a program code in a memory to provide terminal policies.
  • the terminal 401 and the first policy control network element 402 in FIG. 4 may be the devices shown in FIG. 5, and one or more software modules are stored in the memory of the terminal 401 or the first policy control network element 402.
  • the terminal 401 or the first policy control network element 402 may implement a software module through a processor and a program code in a memory to provide terminal policies.
  • the HPLMN of the terminal includes UDM Network elements, H-PCF1 network elements, H-PCF2 network elements, and H-UDR network elements
  • the terminal leaves from VPLMN1 where AMF1 network element, V-PCF1 network element, and V-UDR1 network element are located, and enters AMF2 network element
  • the V-PCF2 network element and the VPLMN2 where the V-UDR2 network element is located, as shown in FIG. 6, is a method for providing a policy provided in an embodiment of this application, including the following steps:
  • S601 The terminal moves, and sends a registration request (registration request) message to AMF2 through the access device in VPLMN2, so that the AMF2 network element receives the registration request message from the terminal.
  • the registration request message may include the identification information and registration type of the terminal.
  • the registration type is mobility registration update.
  • the AMF2 sends a context transfer request (context transfer request) message to the AMF1/MME, so that the AMF1/MME network element receives the context transfer request message from the AMF2 network element.
  • the context transfer request message is used to request the context of the terminal.
  • the AMF1/MME after the AMF1/MME receives the context transmission request message from AMF2, it can learn that the terminal has left the VPLMN1 where the AMF1/MME is located. This will be explained here in a unified manner and will not be repeated here.
  • the AMF1/MME sends a context transfer response (context transfer response) message to the AMF2, so that the AMF2 receives the context transfer response message from the AMF1/MME.
  • the context transmission response message includes the context of the terminal.
  • AMF2 sends a registration complete notification (registration complete notification) to AMF1/MME, so that AMF1 receives the registration complete notification from AMF2.
  • the registration completion notification is used to notify the AMF1/MME that the registration of the AMF2 network element is complete.
  • AMF2 registers with UDM, and obtains subscription data of the terminal.
  • AMF2 sends a Nudm_Terminal Context Management (UE Context Management) registration (Nudm_UECM_Registration) message to UDM to perform registration.
  • UDM returns a confirmation message.
  • AMF2 sends a Nudm_SDM_Get Request message to UDM to request the UE's subscription information.
  • UDM returns the subscription information to AMF2.
  • the UDM sends a Nudr_DM_Query Request to the H-UDR to request the UE's subscription information.
  • AMF2 may also send a subscription request (for example, Nudm_SDM_Subscribed Request) to UDM to subscribe to the notification of subscription data change.
  • the UDM further sends a subscription request (such as Nudr_DM_Subscribed Request) to the H-UDR to subscribe to the notification of the subscription data change.
  • the UDM sends a deregistration notification request (deregistration notification request) to AMF1, so that AMF1 receives the deregistration notification request from UDM.
  • the de-registration notification request is used for AMF1 to delete the context of the terminal.
  • AMF1 sends a deregistration notification response (deregistration notification response) to UDM, so that UDM receives the deregistration notification response from AMF1.
  • the AMF1 may also unsubscribe from the subscription data modification notification.
  • the existing implementation which will not be repeated here.
  • AMF2 re-select V-PCF and H-PCF, assuming that they are V-PCF2 and H-PCF2, then AMF2 sends access and mobility management (Access and Mobility Management, AM) policy associations to V-PCF2 network elements Create request message 1 so that V-PCF2 receives the AM policy association creation request message 1 from AMF2, and the AM policy association creation request message 1 is used to request the creation of AM policy association. Further, V-PCF2 sends an AM policy association creation request message 2 to H-PCF2, so that H-PCF2 receives an AM policy association creation request message 2 from V-PCF2, and the AM policy association creation request message 2 is used to request creation AM policy association.
  • AM Access and Mobility Management
  • H-PCF2 sends an AM policy association creation response message 2 to V-PCF2, so that V-PCF2 receives an AM policy association creation response message 2 from H-PCF2.
  • V-PCF2 sends an AM policy association creation response message 1 to AMF2, so that AMF2 receives a policy association creation response message 1 from V-PCF2.
  • the AM policy association here refers to an association between AMF2 and V-PCF2, and between V-PCF2 and H-PCF2. This association is used for AMF2 to V-PCF2 and V-PCF2 to H-PCF2.
  • the current access-related parameters of the terminal, and H-PCF2 provides terminal-related access and mobility management strategies to AMF2 and V-PCF2 to AMF2.
  • AM policy association please refer to the existing definition of AM policy association. Repeat it again.
  • the policy association creation request message 1 in the embodiment of the present application may be, for example, a policy control creation request (Npcf_AMPolicyCcontrol_Create request) message 1; the policy association creation response message 1 may be, for example, a policy control creation response (Npcf_AMPolicy_ControlCreate response) message 1.
  • the embodiment of the application does not specifically limit this.
  • the H-PCF2 If the H-PCF2 does not have the UE's subscription parameters, the H-PCF2 interacts with the H-UDR, obtains the terminal's policy subscription, and subscribes to the notification of the policy subscription data change. H-PCF2 formulates access and mobility policies according to the policy subscription data, and sends them to AMF2 in a response message.
  • the AMF2 sends a registration acceptance (Registration Accept) message to the terminal, so that the terminal receives the registration acceptance message.
  • the terminal sends a registration complete (Registration Complete) message to AMF2, so that AMF2 receives the registration complete message.
  • AMF2 sends a terminal policy association creation request message 1 to V-PCF2, so that V-PCF2 receives a terminal policy association creation request message 1 from AMF2, and the terminal policy association creation request message 1 is used to request creation of a terminal policy association.
  • V-PCF2 sends a terminal policy association creation request message 2 to H-PCF2, so that H-PCF2 receives terminal policy association creation request message 2 from V-PCF2, and the terminal policy association creation request message 2 is used to request creation Terminal policy association.
  • H-PCF2 sends a terminal policy association creation response message 2 to V-PCF2, so that V-PCF2 receives terminal policy association creation response message 2 from H-PCF2.
  • V-PCF2 sends a terminal policy association establishment response message 1 to AMF2, so that AMF2 receives terminal policy association establishment response message 1 from V-PCF2.
  • AMF2 carries movement type indication information in the terminal policy association creation request message 1 sent to V-PCF2, and the movement type indication information includes instructions for indicating that the terminal has moved across a public land mobile network and instructions The terminal performs at least one of the movements within the public land mobile network.
  • V-PCF2 determines whether to provide a terminal strategy according to the movement type indication information.
  • AMF2 determines that it is not in the same PLMN as AMF1, or if AMF2 determines that the opposite end is an MME (that is, an EPS network element), then AMF2 includes movement type indication information in the message sent to V-PCF2,
  • the movement type indication information includes at least one of instructing the terminal to perform a movement across a public land mobile network and instructing the terminal to perform a movement within a public land mobile network.
  • the terminal policy association here refers to an association between AMF2 and V-PCF2, V-PCF2 and H-PCF2. This association is used for AMF2 to V-PCF2, V-PCF2 to H-PCF2 to transfer terminal current
  • the access-related parameters of H-PCF2 and the strategy that H-PCF2 provides terminals to V-PCF2 and V-PCF2 to AMF2, etc., for related descriptions can refer to the definition of existing terminal policy associations, which will not be repeated here.
  • the terminal policy association creation request message 1 in the embodiment of the present application may be, for example, the terminal policy control creation request message (Npcf_UEPolicyControl_Create request) message 1; the terminal policy association creation response message 1 may, for example, be the terminal policy control creation response (Npcf_UE Policy Control_Create response) message 1.
  • the terminal policy association creation request message 2 in the embodiment of the present application may be, for example, a terminal policy control creation request (Npcf_UE Policy Control_Create request) message 2; the terminal policy association creation response message 2 may, for example, be a terminal policy control creation response (Npcf_UEPolicyControl_Create response) message 2.
  • the embodiment of the application does not specifically limit this.
  • the H-PCF2 If the H-PCF2 does not have a terminal-related contract, the H-PCF2 interacts with the H-UDR, obtains the terminal's policy contract, and subscribes to the notification of the policy contract data change.
  • AMF1 sends an AM policy association deletion request message 1 to V-PCF1, requesting to delete an AM policy association (AM Policy Association), and V-PCF1 receives an AM policy association deletion request message 1 from AMF1.
  • V-PCF1 sends an AM policy association deletion request message 1 to H-PCF1 to request deletion of the AM Policy Association, and H-PCF1 receives the AM policy association deletion request message 1 from V-PCF1.
  • H-PCF1 sends AM policy association deletion response 1 to V-PCF1, and V-PCF1 sends AM policy association deletion response 1 to AMF1, so that AMF1 receives AM policy association deletion response 1 from V-PCF1.
  • the AM policy association deletion request message 1 may be Npcf_AMPolicyControl_Delete request, for example.
  • the AM policy association deletion response 1 may be, for example, Npcf_AMPolicyControl_Delete response.
  • AMF1 sends a terminal policy association deletion request message 1 to V-PCF1 to request deletion of a terminal policy association (UE Policy Association), and V-PCF1 receives a terminal policy association deletion request message 1 from AMF1.
  • V-PCF1 sends a terminal policy association deletion request message 1 to H-PCF1 to request deletion of the UE Policy Association, and H-PCF1 receives a terminal policy association deletion request message 1 from V-PCF1.
  • H-PCF1 sends terminal policy association deletion response 1 to V-PCF1, and V-PCF1 sends terminal policy association deletion response 1 to AMF1, so that AMF1 receives terminal policy association deletion response 1 from V-PCF1.
  • the terminal policy association deletion request message 1 may be Npcf_UEPolicyControl_Delete request, for example.
  • the terminal policy association deletion response 1 may be, for example, Npcf_UEPolicyControl_Delete response.
  • V-PCF2 determines whether to provide a terminal strategy.
  • V-PCF2 interacts with V-UDR, and may obtain the terminal policy (UEPolicy) formulated by the VPLMN for the terminal, which includes a list of UE Policy Section Identifier (UPSI) and corresponding content.
  • UEPolicy terminal policy
  • UPSI UE Policy Section Identifier
  • the movement type indication information received by V-PCF2 in S610 is used to indicate that the terminal has performed a cross-public land mobile network movement, or used to indicate that the terminal has performed a movement within a public land mobile network, then Determine the need to provide the terminal strategy to the terminal.
  • V-PCF2 In the case that the movement type indication information received by V-PCF2 is used to instruct the terminal to perform cross-public land mobile network movement or to instruct the terminal to perform intra-public land mobile network movement, And if V-PCF2 does not receive an indication that ANDSP is not supported, it is determined that a terminal policy needs to be provided to the terminal.
  • the V-PCF2 sends the updated or newly formulated terminal policy to the AMF2 through a N1N2 message transmission request (Namf_Commmuncation_N1N2MesageTransfer Request) message, and the AMF2 receives the updated or newly formulated terminal policy.
  • N1N2 message transmission request Namf_Commmuncation_N1N2MesageTransfer Request
  • the AMF2 sends the terminal policy to the terminal, and the terminal receives the terminal policy.
  • S616 The terminal saves the received UE Policy, and returns an execution result to AMF2, and AMF2 receives the execution result.
  • AMF2 sends the received execution result to V-PCF2, and V-PCF2 receives the execution result. For example, it can be sent to V-PCF2 through Namf_N1MessageNotify.
  • the V-PCF2 receives the movement type indication information, and then determines whether to provide a terminal policy according to the movement type indication information. This solves the problem that in the roaming scenario in the prior art, when the terminal is initially attached, the terminal undergoes AMF reselection due to movement, and the policy control network element in the PLMN where the new AMF entered by the terminal is not sure whether it needs to be issued The problem of terminal strategy.
  • VPLMN1 and VPLMN2 may be different VPLMN networks or the same VPLMN network.
  • the actions of AMF2 or V-PCF2 in the above steps S601 to S617 can be executed by the processor 501 in the communication device 500 shown in FIG. 5 calling the application code stored in the memory 503, which is not done in this embodiment of the application. Any restrictions.
  • the terminal policy association creation request message sent by V-PCF2 to H-PCF2 2 Does not carry an indication requesting a terminal policy, so that when determining that the request message 2 does not carry an indication requesting a terminal policy, H-PCF2 determines not to provide a terminal policy or updates the terminal policy according to the operator's policy.
  • the indication requesting the terminal policy may be: initial registration indication, registration indication for moving from the evolved packet system to the fifth-generation mobile communication system, terminal policy segment identification, operating system identification, and indication supporting ANDSP, or not supporting Any one of the instructions of ANDSP. This application is not limited.
  • the terminal before the terminal moves, the terminal is served by AMF1. Then the terminal triggers the initial registration process to perform the initial registration of AMF1.
  • the process of initial registration can be referred to the prior art, which will not be repeated here.
  • the terminal policy association creation request message 3 sent by AMF1 to V-PCF1 includes an instruction to request the terminal policy.
  • V-PCF1 further sends the instruction to request the terminal policy to H-PCF1.
  • the message sent to the V-PCF1 includes an indication to request the terminal policy.
  • the message sent to the H-PCF1 includes an indication requesting the terminal policy.
  • the H-PCF1 determines whether to provide a terminal policy
  • the H-PCF1 interacts with the H-UDR, and may obtain the UE Policy formulated by the HPLMN for the terminal.
  • H-PCF1 formulates a UE Policy for the terminal according to the instructions of requesting the terminal policy.
  • V-PCF2 In the process shown in Figure 6, in the specific implementation, as a specific implementation, in S610, according to the received mobile type (either Inter-PLMN, Inter-system or Intra-PLMN), V-PCF2
  • the terminal policy association creation request message 2 sent to H-PCF2 carries the indication information that the terminal policy does not need to be sent, so that H-PCF2 can determine when the confirmation request message 2 carries the indication information that the terminal policy does not need to be sent No terminal strategy is provided or the terminal strategy is updated according to the operator's strategy.
  • the terminal before the terminal moves, the terminal is served by AMF1. Then the terminal triggers the initial registration process to perform the initial registration of AMF1.
  • the process of initial registration can be referred to the prior art, which will not be repeated here.
  • another method for policy provision includes: the first policy control network element of the first visited network receives information from the mobility management network element of the first visited network A first request message used to create a terminal policy association, the first request message carries movement type indication information, and the movement type indication information includes instructions for instructing the terminal to perform mobility management network element reselection, and the terminal performs It moves across the public land mobile network, and the terminal performs one of the moves within the public land mobile network.
  • the first policy control function network element sends a second request message for creating a terminal policy association to a second policy control network element at the home location of the terminal, and the second request message carries indication information that the terminal policy is not required or does not carry a request.
  • the indication information of the terminal strategy so that the second strategy control network element does not provide the terminal strategy or updates the terminal strategy according to the operator's strategy.
  • the policy providing system shown in Figure 3 is applied to the 5G network architecture in the home routing roaming scenario shown in Figure 1 or the local grooming roaming scenario shown in Figure 2 as
  • the HPLMN of the terminal includes UDM network elements, H-PCF1 network elements, H-PCF2 network elements, and H-UDR network elements.
  • the terminal leaves from VPLMN1 where the AMF1 network element, V-PCF1 network element, etc. are located, and enters the AMF2 network.
  • the VPLMN2 where the V-PCF2 network element and the V-PCF2 network element are located includes the following steps:
  • the terminal sends a registration request (registration request) message to AMF2 through the access device in VPLMN2, so that the AMF2 network element receives the registration from the terminal Request message.
  • the registration request message carries first indication information, and the first indication information is used to instruct the network to provide a terminal policy.
  • the first indication information may be: terminal strategy segment identification, operating system identification, an indication of supporting access network discovery and selection strategy, an indication of not supporting access network discovery and selection strategy, or an empty terminal At least one of the status indication information.
  • AMF2 sends a terminal policy association creation request message 1 to V-PCF2, so that V-PCF2 receives a terminal policy association creation request message 1 from AMF2, and the terminal policy association creation request message 1 is used to request the creation of a terminal policy association.
  • V-PCF2 sends a terminal policy association creation request message 2 to H-PCF2, so that H-PCF2 receives terminal policy association creation request message 2 from V-PCF2, and the terminal policy association creation request message 2 is used to request creation Terminal policy association.
  • H-PCF2 sends a terminal policy association creation response message 2 to V-PCF2, so that V-PCF2 receives terminal policy association creation response message 2 from H-PCF2.
  • V-PCF2 sends a terminal policy association establishment response message 1 to AMF2, so that AMF2 receives terminal policy association establishment response message 1 from V-PCF2.
  • AMF2 carries second indication information and first indication information in the terminal policy association creation request message 1 sent to V-PCF2.
  • the V-PCF2 determines a strategy for providing the terminal according to the second instruction information and the first instruction information.
  • the second indication information is used to instruct the terminal to move across the PLMN, to instruct the AMF to reselect, or to instruct the visited network to provide a terminal strategy.
  • AMF2 determines that it is not in the same PLMN as AMF1, or if AMF2 determines that the opposite end is an MME (that is, an EPS network element), AMF2 includes the second indication information in the message sent to V-PCF2.
  • the terminal policy association, the terminal policy association creation request message 1, the terminal policy association creation request message 2, the terminal policy association creation response message 1 and the terminal policy association creation response message 2 are the same as the description in S610, and will not be repeated here.
  • step S711 and step S712 are not executed, and S713 is executed.
  • the terminal sends the first indication information for instructing the network to provide the terminal policy.
  • the second indication information and the first indication information are sent to V-PCF2.
  • -PCF2 determines whether to provide a terminal policy according to the second instruction information and the first instruction information.
  • VPLMN1 and VPLMN2 may be different VPLMN networks or the same VPLMN network.
  • the actions of the terminal or V-PCF2 in the above steps S701 to S717 can be executed by the processor 501 in the communication device 500 shown in FIG. 5 calling the application program code stored in the memory 503, which is not done in this embodiment of the application. Any restrictions.
  • S700 is also included, that is, the terminal determines to move to the fifth-generation mobile communication system across the public land mobile network.
  • the first indication information in the registration request message sent by the terminal in S701 is specifically used to instruct the visited network to provide a terminal policy.
  • the terminal policy association creation request message 1 sent by AMF2 to V-PCF2 only carries the first indication information, and does not need to carry the second indication information.
  • the other steps are similar to Figure 7.
  • the method for the terminal to determine to move to the fifth-generation mobile communication system can refer to the prior art.
  • the terminal determines that it has moved to the fifth-generation mobile communication system according to the base station accessed, which is not specifically limited in this application.
  • the terminal policy association creation request message 2 sent by V-PCF2 to H-PCF2 in S710, according to the received second instruction information, the terminal policy association creation request message 2 sent by V-PCF2 to H-PCF2
  • the fourth indication information is not carried, so that the H-PCF2 determines not to provide the terminal policy or updates the terminal policy according to the operator's policy when determining that the request message 2 does not carry the fourth indication information.
  • the fourth indication information is used to instruct the network to provide a terminal strategy.
  • the fourth indication information may be: initial registration indication, registration indication for moving from an evolved packet system to a fifth-generation mobile communication system, terminal policy segment identification, operating system identification, indication of supporting ANDSP, indication of not supporting ANDSP , Or, at least one of the terminal status indication information that is set to null. This application is not limited.
  • the terminal before the terminal moves, the terminal is served by AMF1. Then the terminal triggers the initial registration process to perform the initial registration of AMF1.
  • the process of initial registration can be referred to the prior art, which will not be repeated here.
  • the terminal policy association creation request message 3 sent by AMF1 to V-PCF1 includes an initial registration instruction.
  • V-PCF1 further sends the initial registration instruction to H-PCF1.
  • the message sent to V-PCF1 includes fourth indication information.
  • the message sent to the H-PCF1 includes the fourth indication information.
  • the H-PCF1 determines whether to provide a terminal strategy
  • the H-PCF1 interacts with the H-UDR, and may obtain the terminal strategy formulated by the HPLMN for the terminal.
  • H-PCF1 formulates a terminal strategy for the terminal according to the fourth instruction information.
  • the terminal policy sent by V-PCF2 to H-PCF2 carries the third indication information, so that when the H-PCF2 determines that the request message 2 carries the third indication information, it determines not to provide the terminal policy according to the third indication information or updates according to the operator’s policy Terminal strategy.
  • the third indication information includes any one of an indication that there is no need to provide a terminal policy, an indication of a mobility management network element reselection, or an indication of moving across a public land mobile network.
  • the terminal before the terminal moves, the terminal is served by AMF1. Then the terminal triggers the initial registration process to perform the initial registration of AMF1.
  • the process of initial registration can be referred to the prior art, which will not be repeated here.
  • the above-mentioned equipment that implements the mobility management function entity or the session management function entity includes hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to realize the described functions, but this realization should not be considered beyond the scope of this application.
  • the embodiments of the present application can divide the mobility management function entity or the session management function entity into functional modules according to the foregoing method examples.
  • each functional module can be divided corresponding to each function, or two or more functions can be integrated in In a processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 8 shows a schematic structural diagram of a communication device 80.
  • the device 80 may be the policy control function network element of the first visited network in FIG. 3, or may be a chip in the policy control function network element, which is not specifically limited in the embodiment of the present application.
  • the communication device 80 includes: a receiving module 801 and a processing module 802.
  • the receiving module 801 is configured to receive a first request message for creating a terminal policy association from a mobility management network element of the first visited network, where the first request message carries indication information, and the indication information includes One of instructing the terminal to perform a movement across a public land mobile network, and instructing the terminal to perform a movement within a public land mobile network.
  • the processing module 802 is configured to determine whether to provide a terminal policy according to the instruction information.
  • the processing module 802 is specifically configured to determine to provide a terminal policy when the indication information is used to indicate that the terminal has performed a cross-public land mobile network movement.
  • the processing module 802 is specifically configured to determine not to provide a terminal policy when the instruction information is used to instruct the terminal to perform movement within the public land mobile network.
  • a sending module 803 is also included.
  • the sending module 803 is configured to send a second request message for creating a terminal policy association to the second policy control network element at the home location of the terminal, and the second request message carries indication information indicating that the terminal policy does not need to be sent, so that the first 2.
  • the policy control network element does not provide the terminal policy according to the indication information that the terminal policy does not need to be sent or updates the terminal policy according to the operator's policy.
  • a sending module 803 is further included.
  • the sending module 803 is further configured to send a second request message for creating a terminal policy association to the second policy control network element at the home location of the terminal.
  • the second request message does not carry an instruction to request the terminal policy, so that the The second policy control network element does not provide a terminal policy or updates the terminal policy according to the operator's policy.
  • the second policy control network element does not provide a terminal policy
  • updating the terminal policy according to the operator’s policy specifically includes: if it is determined according to the operator’s policy that the content of the terminal policy at the home location needs to be updated, sending the updated The terminal policy of the home location; or, if it is determined according to the operator's policy that the content of the terminal policy of the home location does not need to be updated, the second policy control network element does not provide the terminal policy.
  • the sending module 803 is specifically configured to send a second request message for creating a terminal policy association to the second policy control network element according to the instruction information.
  • the instructions for requesting terminal policies can be: initial registration instructions, registration instructions for moving from an evolved packet system to a fifth-generation mobile communication system, terminal policy segment identification, operating system identification, and support for access network discovery and selection
  • the instruction of the strategy or, does not support any of the instructions of the access network discovery and selection strategy.
  • FIG. 9 shows a schematic structural diagram of a communication device 90.
  • the device 90 may be the terminal in FIG. 4 or a chip in the terminal, which is not specifically limited in the embodiment of the present application.
  • the communication device 90 includes: a sending module 901 and a receiving module 902.
  • the sending module 901 is configured to send registration request information when the terminal moves across the public land mobile network to the fifth-generation mobile communication system, where the registration request message carries first indication information, and the first indication information is used to indicate The network provides terminal strategies.
  • the receiving module 902 is configured to receive the terminal policy of the first policy control function network element from the first visited network.
  • the first indication information is specifically used to instruct the visited network to provide a terminal policy.
  • FIG. 10 shows a schematic structural diagram of a communication device 100.
  • the device 100 may be the first policy control network element in FIG. 4, or may be a chip in the first policy control network element, which is not specifically limited in the embodiment of the present application.
  • the communication device 100 includes: a receiving module 1001 and a processing module 1002.
  • the receiving module 1001 is configured to receive first indication information from a terminal, where the first indication information is used to instruct the network to provide a terminal policy.
  • the processing module 1002 is configured to determine to provide a terminal policy to the terminal according to the instruction information.
  • the first indication information is specifically used to instruct the visited network to provide a terminal policy.
  • the communication device can determine to provide the terminal policy to the terminal according to the first instruction information used to instruct the visited network to provide the terminal policy.
  • the receiving module 1001 is further configured to receive second indication information and the first indication information from the mobility management network element of the first visited network, and the second indication information is used to instruct the terminal to perform It is used to move across public land mobile networks, to indicate that the mobility management network element has reselected, or to instruct the visited network to provide terminal policies.
  • the first indication information is specifically used to instruct the visited network to provide a terminal policy
  • the receiving module is specifically used to receive the first indication information from the mobility management network element of the first visited network.
  • the device further includes a sending module 1003.
  • the sending module 1003 is configured to send a second request message for creating a terminal policy association to a second policy control network element in the home area, and the second request message carries third indication information so that the second The policy control network element does not provide the terminal policy according to the third instruction information, and the second policy control network element.
  • the device further includes a sending module 1003.
  • the sending module 1003 is configured to send a second request message for creating a terminal policy association to a second policy control network element in the home area, and the second request message does not carry fourth indication information, so that the first The second policy control network element does not provide a terminal policy The second policy control network element.
  • the fourth indication information is used to instruct the network to provide a terminal strategy.
  • the sending module 1003 is specifically configured to send to the second policy control network element to create a terminal policy association according to the first indication information, or according to the first indication information and the second indication information.
  • the second request message is specifically configured to send to the second policy control network element to create a terminal policy association according to the first indication information, or according to the first indication information and the second indication information.
  • the receiving module 1001 is further configured to receive information from the mobility management network element of the second visited place during the initial registration process or the registration of the terminal from the evolved packet system to the fifth generation mobile communication system.
  • a third request message used to create a terminal policy association, where the third request message carries the fourth indication information.
  • the sending module 1003 is further configured to send a fourth request message for creating a terminal policy association to the fourth policy control network element at the home location, and the fourth request message carries a fourth instruction letter.
  • the fourth indication information is used to enable the fourth policy control network element to provide a terminal policy.
  • the communication device 80, 90 or 100 is presented in the form of dividing various functional modules in an integrated manner.
  • the "module” here can refer to application-specific integrated circuits (ASICs), circuits, processors and memories that execute one or more software or firmware programs, integrated logic circuits, and/or other functions that can provide the aforementioned functions Device.
  • ASICs application-specific integrated circuits
  • circuits circuits, processors and memories that execute one or more software or firmware programs, integrated logic circuits, and/or other functions that can provide the aforementioned functions Device.
  • the device 80, 90 or 100 can take the form shown in FIG. 5.
  • the processor 501 in FIG. 5 may invoke the computer-executable instructions stored in the memory 503 to cause the device 80, 90 or 100 to execute the policy providing method in the foregoing method embodiment.
  • One or more of the above modules or units can be implemented by software, hardware or a combination of both.
  • the software exists in the form of computer program instructions and is stored in the memory, and the processor can be used to execute the program instructions and implement the above method flow.
  • the processor can be built in SoC (system on chip) or application specific integrated circuit (ASIC), or it can be an independent semiconductor chip.
  • SoC system on chip
  • ASIC application specific integrated circuit
  • the processor's internal processing is used to execute software instructions for calculations or processing, and may further include necessary hardware accelerators, such as field programmable gate array (FPGA), PLD (programmable logic device) , Or a logic circuit that implements dedicated logic operations.
  • FPGA field programmable gate array
  • PLD programmable logic device
  • the hardware can be CPU, microprocessor, DSP, MCU, artificial intelligence processor, ASIC, SoC, FPGA, PLD, dedicated digital circuit, hardware accelerator or non-integrated discrete device Any one or any combination of these can run necessary software or do not rely on software to perform the above method flow.
  • the function/implementation process of the receiving module and the processing module in FIG. 8, 9 or 10 may be implemented by the processor 501 in FIG. 5 calling a computer execution instruction stored in the memory 503.
  • the function/implementation process of the processing module in FIG. 8, 9 or 10 can be implemented by the processor 501 in FIG. 5 calling a computer execution instruction stored in the memory 503, and the receiving module and sending module in FIG. 8, 9 or 10
  • the function/implementation process of the module can be implemented through the communication interface 504 in FIG. 5.
  • the functions/implementation process of the receiving module and the sending module can also be implemented through pins or circuits.
  • the memory may be a storage unit in the chip, such as a register, a cache, and the like.
  • the memory may also be a storage unit in the device located outside the chip.
  • an embodiment of the present application provides a chip system, which includes a processor, configured to support a first policy control network element to implement the above-mentioned policy providing method.
  • the chip system also includes memory.
  • the memory is used to store the program instructions and data necessary for the first strategy control network element.
  • the chip system may be composed of chips, or may include chips and other discrete devices, which are not specifically limited in the embodiment of the present application.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server, or data center via wired (for example, coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or may include one or more data storage devices such as servers and data centers that can be integrated with the medium.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

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Abstract

本申请公开了一种策略提供方法、装置和系统，使得终端移动进入的新移动性管理网元所在网络的策略控制网元可以确定是否需要下发终端策略的问题。该策略提供方法包括：在终端跨公共陆地移动网络移动到第五代移动通信系统的情况下，终端发送注册请求信息，该注册请求消息携带用于指示网络提供终端策略的第一指示信息；该终端接收来自第一拜访地网络的第一策略控制功能网元的终端策略。

Description

一种策略提供方法、装置和系统
本申请要求于2019年02月14日提交国家知识产权局、申请号为201910115119.6的中国专利和2019年6月3日提交国家知识产权局、申请号为201910478290.3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，尤其涉及策略提供方法、装置及系统。
背景技术
目前，第三代合作伙伴计划(3rd generation partnership project，3GPP)标准组讨论的第五代(5th generation，5G)网络中，接入和移动性管理功能(access and mobility management function，AMF)网元和策略控制功能(policy control function，PCF)网元可以交互，以便获取终端的策略以及接入和移动性管理策略等。
比如，在家乡路由或本地疏导两种漫游场景下，漫游用户的终端在注册到一个拜访地公共陆地移动网络(visited public land mobile network，VPLMN)的过程中，位于终端拜访地的AMF网元通过终端拜访地的PCF(visited-PCF，V-PCF)网元与终端归属地的PCF(home-PCF，H-PCF)网元进行交互，以使得位于终端拜访地的AMF网元可以获得该终端的策略等。
在执行完初始注册后，终端移动发生了AMF网元重选的流程。然而，在目前的AMF重选流程中，终端移动后进入的新AMF所在的PLMN内的V-PCF不能确定是否需要下发终端的策略。进一步的，H-PCF也不能确定是否需要下发终端的策略。
发明内容
本申请实施例提供一种策略提供方法、装置和系统，以解决现有技术中漫游场景下，当终端进行初始附着后，终端因为移动发生移动性管理网元重选的流程中，终端移动进入的新移动性管理网元所在的PLMN内的策略控制网元不确定是否需要下发终端的策略的问题。
为达到上述目的，本申请实施例提供如下技术方案：
第一方面，提供一种策略提供方法，该方法包括：在终端跨公共陆地移动网络移动到第五代移动通信系统的情况下，终端发送注册请求信息，该注册请求消息携带用于指示网络提供终端策略的第一指示信息，然后，终端接收来自第一拜访地网络的第一策略控制功能网元的终端策略。基于本申请实施例提供的策略提供方法，可以使得终端因为移动发生了移动性管理网元重选，终端移动进入的新移动性管理网元所在的PLMN内的策略控制网元不确定是否需要下发终端的策略的问题。
在一种可能的设计中，终端发送注册请求信息具体包括：终端发送注册请求消息给第一拜访地网络的移动性管理网元；该移动性管理网元发送第二指示信息和第一指示信息给该第一策略控制功能网元。该第二指示信息用于指示终端进行了跨公共陆地移动网络的移 动、用于指示移动性管理网元进行了重选或用于指示拜访网络提供终端策略。
在一种可能的设计中，第一指示信息具体用于指示拜访网络提供终端策略，相应的，终端发送注册请求信息具体包括：终端发送注册请求消息给该第一拜访地网络的移动性管理网元，然后，该移动性管理网元发送所述第一指示信息给该第一策略控制功能网元。
在一种可能的设计中，第一指示信息具体可以是：需要终端策略指示、终端策略片段标识、支持接入网发现和选择策略的指示、不支持接入网发现和选择策略的指示、操作系统标识、或，置为空的终端状态指示信息中的至少一个。
第二方面，提供了一种策略提供方法，该策略提供方法包括：第一拜访地网络的第一策略控制功能网元接收来自终端的第一指示信息，该第一指示信息用于指示网络提供终端策略。该第一策略控制功能网元根据该第一指示信息确定向所述终端提供终端策略。
在一种可能的设计中，还包括：该第一策略控制功能网元接收来自第一拜访地网络的移动性管理网元的第二指示信息和第一指示信息，该第二指示信息用于指示所述终端进行了跨公共陆地移动网络的移动、用于指示移动性管理网元进行了重选或用于指示拜访网络提供终端策略。
在一种可能的设计中，该第一指示信息具体用于指示拜访网络提供终端策略，该第一策略控制功能网元接收来自终端的第一指示信息具体包括：该第一策略控制功能网元接收来自该第一拜访地网络的移动性管理网元的第一指示信息。
在一种可能的设计中，还包括：该第一策略控制功能网元向归属地的第二策略控制网元发送用于创建终端策略关联的第二请求消息，所述第二请求消息中携带第三指示信息，以使所述第二策略控制网元根据所述第三指示信息不提供终端策略、或者根据运营商的策略更新终端策略。
在一种可能的设计中，还包括：该第三指示信息包括不需要提供终端策略的指示、移动性管理网元重选的指示或跨公共陆地移动网络移动的指示中的任意一个。
在一种可能的设计中，还包括：该第一策略控制功能网元向归属地的第二策略控制网元发送用于创建终端策略关联的第二请求消息，所述第二请求消息中不携带用于指示网络提供终端策略的第四指示信息，以使所述第二策略控制网元不提供终端策略或者根据运营商的策略更新终端策略。
在一种可能的设计中，第一策略控制功能网元向归属地的第二策略控制网元发送用于创建终端策略关联的第二请求消息具体包括：第一策略控制功能网元根据该第一指示信息，或根据该第一指示信息和第二指示信息向第二策略控制网元发送用于创建终端策略关联的第二请求消息。
在一种可能的设计中，还包括：在初始注册流程或所述终端从演进的分组系统到第五代移动通信系统的注册中，第二拜访地的第三策略控制网元接收来自该第二拜访地的移动性管理网元的用于创建终端策略关联的第三请求消息，该第三请求消息中携带所述第四指示信息；该第三策略控制网元发送用于创建终端策略关联的第四请求消息给归属地的第四策略控制网元。该第四请求消息中携带第四指示信息，该第四指示信息用于使所述第四策略控制网元提供终端策略。
在一种可能的设计中，第三策略控制网元发送第四指示信息给第四策略控制网元具体包括：在所述第三策略控制网元接收的第三请求消息中不包括终端状态指示信息的情况下， 所述第三策略控制网元发送所述第四指示信息给所述第四策略控制网元。
在一种可能的设计中，该第四指示信息具体可以是：初始注册指示、从演进的分组系统移动到第五代移动通信系统的注册指示、终端策略片段标识、操作系统标识、支持接入网发现和选择策略的指示、不支持接入网发现和选择策略的指示、或，置为空的终端状态指示信息中的任意一个。
在一种可能的设计中，所述第一指示信息具体可以是：终端策略片段标识、操作系统标识、支持接入网发现和选择策略的指示，或，不支持接入网发现和选择策略的指示、或，置为空的终端状态指示信息中的任意一个。
第三方面，提供了一种策略提供方法，包括：在终端跨公共陆地移动网络移动到第五代移动通信系统的情况下，终端发送注册请求信息给第一拜访地的移动性管理网元，该注册请求消息携带用于指示网络提供终端策略的第一指示信息。第一拜访地网络的第一策略控制功能网元接收来自该移动性管理网元的该第一指示信息。第一策略控制功能网元根据该第一指示信息确定向该终端提供终端策略。
第四方面，提供了一种策略提供系统，包括：包括终端和第一拜访地网络的第一策略控制功能网元。该终端用于在终端跨公共陆地移动网络移动到第五代移动通信系统的情况下，发送注册请求信息给第一拜访地的移动性管理网元，该注册请求消息携带用于指示网络提供终端策略的第一指示信息。第一策略控制功能网元，用于接收来自该移动性管理网元的第一指示信息，根据该第一指示信息确定向该终端提供终端策略。
第五方面，提供了另一种策略提供方法，包括：第一拜访地网络的第一策略控制功能网元接收来自第一拜访地网络的移动性管理网元的用于创建终端策略关联的第一请求消息，该第一请求消息中携带移动类型指示信息，该移动类型指示信息包括用于指示所述终端执行了跨公共陆地移动网络移动、和用于指示所述终端执行了公共陆地移动网络内移动中的一个。该第一策略控制功能网元根据所述移动类型指示信息确定是否提供终端策略。基于本申请实施例提供的策略提供方法，可以使得终端因为移动发生了移动性管理网元重选，终端移动进入的新移动性管理网元所在的PLMN内的策略控制网元不确定是否需要下发终端的策略的问题。
在一种可能的设计中，该第一策略控制功能网元根据移动类型指示信息确定是否提供终端策略具体包括：在所述移动类型指示信息为用于指示该终端执行了跨公共陆地移动网络移动的情况下，该第一策略控制功能网元确定提供终端策略。
在一种可能的设计中，该第一略控制功能网元根据所述移动类型指示信息确定是否提供终端策略具体包括：在该移动类型指示信息为用于指示该终端执行了公共陆地移动网络内移动的情况下，该第一策略控制功能网元确定不提供终端策略。
在一种可能的设计中，该方法还包括：该第一策略控制功能网元向终端归属地的第二策略控制网元发送用于创建终端策略关联的第二请求消息，该第二请求消息中携带不需要发送终端策略的指示信息，以使该第二策略控制网元根据该不需要发送终端策略的指示信息不提供终端策略或者根据运营商的策略更新终端策略。
在一种可能的设计中，该不需要发送终端策略的指示信息具体可以为：不需要发送终端策略指示、移动性管理网元重选指示、跨公共陆地移动网络移动指示或公共陆地移动网络移动指示中的至少一个。
在一种可能的设计中，该方法还包括：该第一策略控制功能网元向该终端归属地的第二策略控制网元发送用于创建终端策略关联的第二请求消息，该第二请求消息中不携带请求终端策略的指示，以使该第二策略控制网元不提供终端策略或者根据运营商的策略更新终端策略。
在一种可能的设计中，该第一策略控制功能网元向该第二策略控制网元发送用于创建终端策略关联的第二请求消息具体包括：该第一策略控制功能网元根据该移动类型指示信息向该第二策略控制网元发送用于创建终端策略关联的第二请求消息。
在一种可能的设计中，该方法还包括：在初始注册流程或所述终端从演进的分组系统到第五代移动通信系统的注册中，第二拜访地的第三策略控制网元接收第二拜访地的移动性管理网元的用于创建终端策略关联的第三请求消息，该第三请求消息中携带请求终端策略的指示，该第三策略控制网元发送用于创建终端策略关联的第四请求消息给所述终端归属地的第四策略控制网元，该第四请求消息中携带该请求终端策略的指示。其中，该请求终端策略的指示用于使该第四策略控制网元提供终端策略。
在一种可能的设计中，该第二拜访地的第三策略控制网元发送请求终端策略的指示给该第四策略控制网元具体包括：在该第三策略控制网元接收的第三请求消息中不包括终端状态指示信息的情况下，该第三策略控制网元发送该请求终端策略的指示给该第四策略控制网元。
在一种可能的设计中，该请求终端策略的指示具体可以为：初始注册指示、从演进的分组系统移动到第五代移动通信系统的注册指示、终端策略片段标识、操作系统标识、支持接入网发现和选择策略的指示、不支持接入网发现和选择策略的指示、或，置为空的终端状态指示信息中的任意一个。
第六方面，提供了另一种策略提供方法，包括：第一拜访地网络的移动性管理网元发送用于创建终端策略关联的第一请求消息给第一拜访地网络的第一策略控制网元；该第一请求消息中携带移动类型指示信息，该移动类型指示信息包括用于指示所述终端执行了跨公共陆地移动网络移动、和用于指示所述终端执行了公共陆地移动网络内移动中的一个。该第一策略控制网元接收该第一请求消息，根据所述移动类型指示信息确定是否提供终端策略。
在一种可能的设计中，还包括：该第一拜访地网络的移动性管理网元确定终端的移动类型。
第七方面，提供了另一种策略提供系统，包括：第一拜访地网络的移动性管理网元和第一拜访地网络的一策略控制网元。该移动性管理网元发送用于创建终端策略关联的第一请求消息给该第一策略控制网元。该第一请求消息中携带移动类型指示信息，该移动类型指示信息包括用于指示所述终端执行了跨公共陆地移动网络移动、和用于指示所述终端执行了公共陆地移动网络内移动中的一个。该第一策略控制网元接收该第一请求消息，根据所述移动类型指示信息确定是否提供终端策略。
第八方面，提供了另一种策略提供方法，包括：第一拜访地网络的第一策略控制网元接收来自第一拜访地网络的移动性管理网元的用于创建终端策略关联的第一请求消息，该第一请求消息中携带移动类型指示信息，该移动类型指示信息包括用于指示所述终端执行了移动性管理网元重选、所述终端执行了跨公共陆地移动网络移动、和所述终端执行了公共 陆地移动网络内移动中的一个。该第一策略控制功能网元向终端归属地的第二策略控制网元发送用于创建终端策略关联的第二请求消息，该第二请求消息中携带不需要终端策略的指示信息或不携带请求终端策略的指示信息，以使该第二策略控制网元不提供终端策略或者根据运营商的策略更新终端策略。基于本申请实施例提供的策略提供方法，可以使得终端因为移动发生了移动性管理网元重选，终端归属地的策略控制网元不确定是否需要下发终端的策略的问题。
在一种可能的设计中，该不需要终端策略的指示信息的具体形式同第五方面所述的不需要终端策略的指示信息的具体形式。
在一种可能的设计中，该请求终端策略的指示信息的具体形式同第五方面所述的请求终端策略的指示信息。
在一种可能的设计中，还包括：在初始注册流程或所述终端从演进的分组系统到第五代移动通信系统的注册中，第二拜访地的第三策略控制网元接收来自该第二拜访地的移动性管理网元的用于创建终端策略关联的第三请求消息，该第三请求消息中携带请求终端策略的指示信息；该第三策略控制网元发送用于创建终端策略关联的第四请求消息给归属地的第四策略控制网元。该第四请求消息中携带该请求终端策略的指示信息，用于使所述第四策略控制网元提供终端策略。其中，具体实现中，第二拜访地可以和第一拜访地相同，也可以不同。
在一种可能的设计中，第三策略控制网元发送请求终端策略的指示信息给第四策略控制网元具体包括：在所述第三策略控制网元接收的第三请求消息中不包括终端状态指示信息的情况下，所述第三策略控制网元发送所述请求终端策略的指示信息给所述第四策略控制网元。
第九方面，本申请的实施例提供一种策略提供系统，包括第一拜访地网络的第一策略控制网元和终端归属地的第二策略控制网元。第一拜访地网络的第一策略控制网元，用于接收来自第一拜访地网络的移动性管理网元的用于创建终端策略关联的第一请求消息，该第一请求消息中携带移动类型指示信息，该移动类型指示信息包括用于指示所述终端执行了移动性管理网元重选、所述终端执行了跨公共陆地移动网络移动、和所述终端执行了公共陆地移动网络内移动中的一个。该第一策略控制功能网元，用于向终端归属地的第二策略控制网元发送用于创建终端策略关联的第二请求消息，该第二请求消息中携带不需要终端策略的指示信息或不携带请求终端策略的指示信息，以使该第二策略控制网元不提供终端策略或者根据运营商的策略更新终端策略。具体实现方式同第八方面所述的策略提供方法。
在上述各方面以及各方面可能的设计中，所述第二策略控制网元根据所述第三指示信息不提供终端策略，或者根据运营商的策略更新终端策略具体包括：若根据运营商的策略确定需要更新归属地的终端策略的内容，则发送更新的归属地的终端策略；或，若根据运营商的策略确定不需要更新归属地的终端策略的内容，所述第二策略控制网元不提供终端策略。
第十方面，本申请的实施例提供一种通信装置，该装置具有实现上述第一方面任意一项或第二方面任意一项或第五方面或第八方面任意一项提供的方法实施例的执行主体的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括 一个或多个与上述功能相对应的模块。
第十一方面，提供了一种通信装置，包括：处理器和存储器；该存储器用于存储计算机执行指令，当该通信装置运行时，该处理器执行该存储器存储的该计算机执行指令，以使该通信装置执行如上述第一方面任意一项或第二方面任意一项或第五方面或第八方面任意一项提供的策略提供方法。
第十二方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机可以执行上述第一方面任意一项或第二方面任意一项或第五方面任意一项提供的策略提供方法。
第十三方面，提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机可以执行上述第一方面任意一项或第二方面任意一项或第五方面任意一项提供的策略提供方法。
第十四方面，提供了一种装置(例如，该装置可以是芯片系统)，该装置包括处理器，用于支持该装置实现上述第一方面任意一项或第二方面任意一项或第五方面或第八方面任意一项所涉及的功能。在一种可能的设计中，该装置还包括存储器，该存储器，用于保存该装置必要的程序指令和数据。该装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件。
其中，第三方面、第四方面、第六方面、第七方面、第九方面至第十四方面中任一种设计方式所带来的技术效果可参见第一方面或第五方面或第八方面中不同设计方式所带来的技术效果，此处不再赘述。
本申请的这些方面或其他方面在以下实施例的描述中会更加简明易懂。
附图说明
图1为现有的家乡路由漫游场景下的5G网络架构示意图；
图2为现有的本地疏导漫游场景下的5G网络架构示意图；
图3为本申请实施例提供的策略控制系统的架构示意图一；
图4为本申请实施例提供的策略控制系统的架构示意图二；
图5为本申请实施例提供的通信设备的硬件结构示意图；
图6为本申请实施例提供的策略提供方法的方法流程图一；
图7为本申请实施例提供的策略提供方法的方法流程图二；
图8为本申请实施例提供的通信装置的结构示意图一；
图9为本申请实施例提供的通信装置的结构示意图二；
图10为本申请实施例提供的通信装置的结构示意图三。
具体实施方式
为了方便理解本申请实施例的技术方案，首先给出本申请相关技术的简要介绍如下。
如图1所示，为现有的家乡路由漫游场景下的5G网络架构示意图。该网络架构包括终端的VPLMN和终端的归属地公共陆地移动网络(home public land mobile network，HPLMN)。其中，终端当前位于终端的VPLMN中，该终端的VPLMN中包括接入设备、用户面功能(user plane function，UPF)1网元、AMF网元、拜访地的会话管理功能网元 (visited-session management function，SMF)网元、V-PCF网元、或者拜访地统一数据库(visited-unified data repository，V-UDR)等；该终端的HPLMN中包括UPF2网元、归属地的SMF(home-SMF，H-SMF)网元、H-PCF网元、归属地的UDR(home-UDR，H-UDR)网元、统一数据管理(unified data management，UDM)网元或者应用功能(application function，AF)网元等。
其中，终端通过接入设备接入5G网络，终端通过下一代网络(next generation，N)接口1(简称N1)与AMF网元通信；接入设备通过N2接口(简称N2)与AMF网元通信，通过N3接口(简称N3)与UPF1网元通信；AMF网元通过N11接口(简称N11)与V-SMF网元通信，通过N15接口(简称N15)与V-PCF网元通信，通过N8接口(简称N8)与UDM网元通信；V-SMF网元通过N16接口(简称N16)与H-SMF网元通信，通过N7接口(简称N7)与V-PCF网元通信，通过N4接口(简称N4)与UPF1网元通信；UPF1网元通过N9接口(简称N9)与UPF2网元通信；H-SMF网元通过N7接口(简称N7)与H-PCF网元通信，通过N10接口(简称N10)与UDM网元通信；V-PCF网元通过N24接口(简称N24)与H-PCF网元通信；V-UDR网元与V-PCF网元通信；H-UDR网元与H-PCF网元通信；H-PCF网元通过N5接口(简称N5)与AF网元通信；UPF2网元通过N6接口(简称N6)接入数据网络。
需要说明的是，图1所示的5G网络中的AMF网元、V-SMF网元、H-SMF网元、V-PCF网元、H-PCF网元或者UDM网元等控制面网元也可以采用服务化接口进行交互。比如，AMF网元对外提供的服务化接口可以为Namf；V-SMF网元对外提供的服务化接口可以为Nvsmf；H-SMF网元对外提供的服务化接口可以为Nhsmf；H-PCF网元对外提供的服务化接口可以为Nhpcf；V-PCF网元对外提供的服务化接口可以为Nvpcf；UDM网元对外提供的服务化接口可以为Nudm，等。相关描述可以参考23501标准中的5G系统架构(5G system architecture)图，在此不予赘述。
如图2所示，为现有的本地疏导漫游场景下的5G网络架构示意图。该网络架构包括终端的VPLMN和终端的HPLMN。其中，终端当前位于终端的VPLMN中，该终端的VPLMN中包括接入设备、UPF网元、AMF网元、SMF网元、V-PCF网元、V-UDR网元、或者AF网元等；该终端的HPLMN中包括H-PCF网元、UDM网元或者H-UDR网元等。
其中，终端通过接入设备接入5G网络，终端通过N1与AMF网元通信；接入设备通过N2与AMF网元通信，通过N3与UPF网元通信；AMF网元通过N11与SMF网元通信，通过N15与V-PCF网元通信，通过N8与UDM网元通信；SMF网元通过N7与V-PCF网元通信，通过N4与UPF网元通信，通过N10与UDM网元通信；UPF网元通过N6接口(简称N6)接入数据网络；V-PCF网元通过N24与H-PCF网元通信，通过N5与AF网元通信；V-UDR网元与V-PCF网元通信；H-UDR网元与H-PCF网元通信。
需要说明的是，图2所示的5G网络中的AMF网元、V-SMF网元、H-SMF网元、SMF网元、V-PCF网元、H-PCF网元或者UDM网元等控制面网元也可以采用服务化接口进行交互。比如，AMF网元对外提供的服务化接口可以为Namf；SMF网元对外提供的服务化接口可以为Nsmf；V-SMF网元对外提供的服务化接口可以为Nvsmf；H-SMF网元对外提供的服务化接口可以为Nhsmf；H-PCF网元对外提供的服务化接口可以为Nhpcf；V-PCF网元对外提供的服务化接口可以为Nvpcf；UDM网元对外提供的服务化接口可以为Nudm，等。 相关描述可以参考23501标准中的5G系统架构(5G system architecture)图，在此不予赘述。
需要说明的是，图1或图2所示的5G网络架构中的网元或者各接口的名字仅是一个示例，具体实现中可以是其他名字，本申请实施例对此不作具体限定。
需要说明的是，图1或者图2所示的5G网络架构中仅是示例性的给出了一个VPLMN，当然，终端还可能从一个VPLMN移动到另外一个VPLMN，不同场景下VPLMN中的网元以及连接方式可参考图1或者图2所示的5G网络架构中的VPLMN中的网元以及连接方式，在此不再一一赘述。
需要说明的是，图1或者图2所示的5G网络架构中仅是示例性的以一个VPLMN中包括一个AMF网元、V-SMF网元、V-PCF网元或者V-UDR网元等为例进行说明。当然，一个VPLMN中可以包括多个AMF网元、多个V-SMF网元、多个V-PCF网元或者多个V-UDR网元，不同AMF网元之间可以通过N14接口(简称N14)通信；不同的V-PCF网元之间可以通过N24通信，等等，具体可参考现有的5G网络架构描述，在此不予赘述。
需要说明的是，图1或者图2所示的5G网络架构中仅是示例性的以HPLMN中包括一个H-PCF网元或者H-UDR网元等为例进行说明。当然，HPLMN中可以包括多个H-PCF网元或者H-UDR网元，不同的H-PCF网元之间可以通过N24通信，等等，具体可参考现有的5G网络架构描述，在此不予赘述。
可选的，本申请实施例中所涉及到的终端(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，上面提到的设备统称为终端。
可选的，本申请实施例中所涉及的接入设备指的是接入核心网的设备，例如可以是基站，宽带网络业务网关(broadband network gateway，BNG)，汇聚交换机，非第三代合作伙伴计划(3rd generation partnership project，3GPP)接入设备等。基站可以包括各种形式的基站，例如：宏基站，微基站(也称为小站)，中继站，接入点等。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。其中，在本申请的描述中，除非另有说明，“/”表示前后关联的对象是一种“或”的关系，例如，A/B可以表示A或B；本申请中的“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，其中A,B可以是单数或者复数。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。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a-b，a-c，b-c，或a-b-c，其中a，b，c可以是单个，也可以是多个。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。
此外，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。
如图3所示，为本申请实施例提供的一种策略提供系统30，该策略提供系统30包括第一拜访地网络的移动性管理网元301和第一拜访地网络的第一策略控制网元302。
其中，移动性管理网元301，用于向第一策略控制网元302发送用于创建终端策略关联的第一请求消息，所述第一请求消息中携带移动类型指示信息，所述移动类型指示信息包括用于指示所述终端执行了跨公共陆地移动网络移动、和用于指示所述终端执行了公共陆地移动网络内移动中的一个。或者说，所述移动类型指示信息用于指示所述终端执行了跨公共陆地移动网络移动，或者，所述指示信息用于指示所述终端执行了公共陆地移动网络内移动。所述第一策略控制网元302，用于接收来自移动性管理网元301的第一请求消息，根据其中携带的所述移动类型指示信息确定是否提供终端策略。本发明中的跨公共陆地移动网络移动、公共陆地移动网络内移动是指在5G系统中移动。
可选的，本申请实施例中，移动性管理网元301和第一策略控制网元302之间可以直接通信，也可以通过其他设备的转发进行通信，本申请实施例对此不作具体限定。
现有技术中，在执行完初始注册后，终端移动发生了移动性管理网元重选的流程。然而，在目前的移动性管理网元重选流程中，终端移动后重选的移动性管理网元所在的PLMN内的策略控制网元不能确定是否需要下发终端的策略。这里的移动性管理网元重选可以是终端从V-PLMN1移动到V-PLMN2(也可以叫做是跨PLMN移动)引起的移动性管理网元重选；也可以是终端在V-PLMN1内部移动(也可以叫做是V-PLMN内移动)引起的移动性管理网元重选；也可以是终端进行了跨系统移动引起的移动性管理网元重选，比如：从演进分组系统(Evolved Packet System，EPS)移动到第五代移动通信系统(5th generation wireless systems，5GS)。对于终端从V-PLMN1移动到V-PLMN2引起的移动性管理网元重选的场景中，移动性管理网元301和第一策略控制网元302是V-PLMN2中的。对于终端在V-PLMN1内部移动引起的移动性管理网元重选的场景中，移动性管理网元301和第一策略控制网元302是V-PLMN1中的。对于终端从EPS移动到5GS引起的移动性管理网元重选的场景中，移动性网元从EPS中的移动性管理实体(Mobility Management Entity,MME)重新选择变为5GS中的移动性管理网元。基于本申请实施例提供的策略控制系统，由于重选后的移动性管理网元将指示信息发给了终端移动后所在的拜访网络的策略控制网元，这样拜访地策略控制网元可以根据指示信息来确定是否发送终端策略。
可选的，如图3所示，本申请实施例提供的策略控制系统30还可以包括终端归属地的第二策略控制网元303。
在一种实现方式中，第一策略控制网元302，用于向第二策略控制网元303发送用于创建终端策略关联的第二请求消息，所述第二请求消息中不携带请求终端策略的指示。
第二策略控制网元303，用于接收来自第一策略控制网元302的第二请求消息，在确定第二请求消息中不携带请求终端策略的指示的情况下，所述第二策略控制网元303不提供 终端策略或者根据运营商的策略更新终端策略。其中，请求终端策略的指示可以是：初始注册指示，从演进的分组系统移动到第五代移动通信系统的注册指示，终端策略片段标识，操作系统标识，支持接入网发现和选择策略(Access Network Discovery and Selection，ANDSP)的指示，或，不支持ANDSP的指示中的任意一个。
在具体实现中，所述第二策略控制网元303不提供终端策略，或者根据运营商的策略更新终端策略具体包括：若根据运营商的策略确定需要更新归属地的终端策略的内容，则发送更新的归属地的终端策略；或，若根据运营商的策略确定不需要更新归属地的终端策略的内容，所述第二策略控制网元不提供终端策略。其中，运营商策略比如可以为根据UE的位置或当前的时间更新终端策略。
在另一种实现方式中，第一策略控制网元302，用于向第二策略控制网元303发送用于创建终端策略关联的第二请求消息，所述第二请求消息中携带不需要发送终端策略的指示信息，在确定第二请求消息中携带不需要发送终端策略的指示信息的情况下，所述第二策略控制网元303不提供终端策略或者根据运营商的策略更新终端策略。其中，不需要发送终端策略的指示信息包括不需要发送终端策略指示、移动性管理网元重选指示、跨公共陆地移动网络移动指示或公共陆地移动网络移动指示中的至少一个。在具体实现中，所述第二策略控制网元303不提供终端策略，或者根据运营商的策略更新终端策略具体包括：若根据运营商的策略确定需要更新归属地的终端策略的内容，则发送更新的归属地的终端策略；或，若根据运营商的策略确定不需要更新归属地的终端策略的内容，所述第二策略控制网元不提供终端策略。其中，运营商策略比如可以为根据UE的位置或当前的时间更新终端策略。
基于本申请实施例提供的策略控制系统，通过拜访地的第一策略控制网元向归属地的第二策略控制网元发送不携带请求终端策略的指示的第二请求消息，或发送携带不需要发送终端策略的指示信息的第二请求消息，使得归属地的第二策略控制网元也可以确定是否需要下发终端的策略或者仅根据运营商的策略更新终端策略。
或者，可选的，如图4所示，为本申请实施例提供的一种策略提供系统40，该策略控制系统40包括终端401和终端第一拜访地网络的第一策略控制网元402。
其中，所述终端401，用于在终端跨公共陆地移动网络移动到第五代移动通信系统的情况下，发送注册请求信息给终端第一拜访地的移动性管理网元，该注册请求消息携带第一指示信息，该第一指示信息用于指示网络提供终端策略。第一拜访地网络的第一策略控制功能网元402，用于接收来自该移动性管理网元的第一指示信息；根据该指示信息确定向终端提供终端策略。
可选的，本申请实施例中，终端401和第一拜访地的移动性管理网元，第一拜访地的移动性管理网元和第一策略控制网元402之间可以直接通信，也可以通过其他设备的转发进行通信，本申请实施例对此不作具体限定。
基于本申请实施例提供的策略控制系统，由于拜访地网络的第一策略控制网元接收到了用于指示网络提供终端策略的第一指示信息，这样第一策略控制网元可以根据该第一指示信息来确定是否发送终端策略。
在一种实现方式中，第一策略控制功能网元，用于接收来自移动性管理网元的第二指示信息和所述第一指示信息，所述第二指示信息用于指示所述终端进行了跨公共陆地移动网 络的移动、用于指示移动性管理网元进行了重选或用于指示所述终端需要拜访网络的终端策略。相应的，第一策略控制功能网元，用于根据该第二指示信息和第一指示信息确定向所述终端提供终端策略。第一指示信息具体可以为：需要终端策略指示、终端策略片段标识、支持接入网发现和选择策略的指示、不支持接入网发现和选择策略的指示、操作系统标识、或置为空的终端状态指示信息中的至少一个，本申请不做具体限定，只要可以指示网络提供终端策略就可以。其中，所述第二指示信息用于指示移动性管理网元进行了重选，或者说指示移动性管理网元进行重选，用英文表示可以是：AMF relocation。这里不做具体限定。
在一种实现方式中，该第一指示信息用于指示所述终端需要VPLMN的终端策略。则该实现方式中，第一策略控制功能网元，用于根据该第一指示信息就可以确定向所述终端提供终端策略。
可选的，如图4所示，本申请实施例提供的策略控制系统40还可以包括终端归属地的第二策略控制网元403。
在一种实现方式中，第一策略控制网元402，用于向第二策略控制网元403发送用于创建终端策略关联的第二请求消息，所述第二请求消息中不携带第四指示信息。
第二策略控制网元403，用于接收来自第一策略控制网元402的第二请求消息，在确定第二请求消息中不携带第四指示信息的情况下，所述第二策略控制网元403不提供终端策略或者根据运营商的策略更新终端策略。其中，第四指示信息可以是：初始注册指示，从演进的分组系统移动到第五代移动通信系统的注册指示，终端策略片段标识，操作系统标识，支持ANDSP的指示，不支持ANDSP的指示，或，置为空的终端状态指示信息中的任意一个。在另一种实现方式中，第一策略控制网元402，用于向第二策略控制网元403发送用于创建终端策略关联的第二请求消息，所述第二请求消息中携带第三指示信息，在确定第二请求消息中携带第三指示信息的情况下，所述第二策略控制网元403不提供终端策略或者根据运营商的策略更新终端策略。
在具体实现中，所述第二策略控制网元403不提供终端策略，或者根据运营商的策略更新终端策略具体包括：若根据运营商的策略确定需要更新归属地的终端策略的内容，则发送更新的归属地的终端策略；或，若根据运营商的策略确定不需要更新归属地的终端策略的内容，所述第二策略控制网元不提供终端策略。其中，运营商策略比如可以为根据UE的位置或当前的时间更新终端策略。
基于本申请实施例提供的策略控制系统，通过拜访地的第一策略控制网元向归属地的第二策略控制网元发送不携带第四指示信息的第二请求消息，或发送携带第三指示信息的第二请求消息，使得归属地的第二策略控制网元也可以确定是否需要下发终端的策略或者根据运营商的策略更新终端策略。
可选的，图3或图4所示的策略提供系统可以应用于图1所示的家乡路由漫游场景下的5G网络架构中或者图2所示的本地疏导漫游场景下的5G网络架构中，还可以应用于未来的其他将要出现的漫游网络架构中，本申请实施例对此不作具体限定。
示例性的，若图3或图4所示的策略提供系统应用于图1所示的家乡路由漫游场景下的5G网络架构中或者图2所示的本地疏导漫游场景下的5G网络架构中，则图3中的移动性管理网元301所对应的网元或者实体可以为上述5G网络架构中的VPLMN中的AMF网 元；图3中的拜访地网络的第一策略控制网元302或者图4中的第一策略控制网元402所对应的网元或者实体可以为上述5G网络架构中的VPLMN中的V-PCF网元，本申请实施例对此不作具体限定。
可选的，本申请实施例图3中的移动性管理网元301或者拜访地网络的第一策略控制网元302，或者图4中的第一策略控制网元402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，本申请实施例图3中的移动性管理网元301或者拜访地网剧哦的第一策略控制网元302，或者图4中的终端401或第一策略控制网元402可以通过图5中的通信设备来实现。图5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500包括处理器501，通信线路502，以及至少一个通信接口(图5中仅是示例性以通信接口504为例进行说明)，可选的，还包括存储器503。
处理器501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502可包括一通路，在上述组件之间传送信息。
通信接口504，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，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。
在具体实现中，作为一种实施例，处理器501可以包括一个或多个CPU，例如图5中的CPU0和CPU1。
在具体实现中，作为一种实施例，还包括存储器503。存储器503可以是独立存在，通过通信线路与处理器相连接。存储器503也可以和处理器501集成在一起。存储器503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。
如果处理器501需要程序代码，存储器503可以存储程序代码，并将该程序代码传输给处理器501，以使得处理器501根据程序代码的指示实现本申请实施例。
在具体实现中，作为一种实施例，通信设备500可以包括多个处理器，例如图5中的处理器501和处理器508。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。所述处理器可以包括但不限于以下至少一种：中央处理单元(central processing unit，CPU)、微处理器、数字信号处理器(DSP)、微控制器(microcontroller unit，MCU)、或人工智能处理器等各类运行软件的计算设备，每种计算设备可包括一个或多个用于执行软件指令以进行运算或处理的核。。
在具体实现中，作为一种实施例，通信设备500还可以包括输出设备505和输入设备506。输出设备505和处理器501通信，可以以多种方式来显示信息。例如，输出设备505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506和处理器501通信，可以以多种方式接收用户的输入。例如，输入设备506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500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500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5中类似结构的设备。本申请实施例不限定通信设备500的类型。
示例性的，图3中的移动性管理网元301和第一策略控制网元302可以为图5所示的设备，移动性管理网元301或第一策略控制网元302的存储器中存储了一个或多个软件模块。移动性管理网元301或第一策略控制网元302可以通过处理器以及存储器中的程序代码来实现软件模块，实现终端策略的提供。
示例性的，图4中的终端401和第一策略控制网元402可以为图5所示的设备，终端401或第一策略控制网元402的存储器中存储了一个或多个软件模块。终端401或第一策略控制网元402可以通过处理器以及存储器中的程序代码来实现软件模块，实现终端策略的提供。
下面将结合图1至图5对本申请实施例提供的策略提供方法进行具体阐述。
需要说明的是，本申请下述实施例中各个网元之间的消息名字或消息中各参数的名字等只是一个示例，具体实现中也可以是其他的名字，本申请实施例对此不作具体限定。
可选的，以图3所示的策略提供系统应用于图1所示的家乡路由漫游场景下的5G网络架构中或者图2所示的本地疏导漫游场景为例，假设终端的HPLMN中包括UDM网元、H-PCF1网元、H-PCF2网元和H-UDR网元，终端从AMF1网元、V-PCF1网元、以及V-UDR1网元等所在的VPLMN1离开，进入AMF2网元、V-PCF2网元、以及V-UDR2网元等所在的VPLMN2，则如图6所示，为本申请实施例提供的一种策略提供方法，包括如下步骤：
S601、终端发生移动，通过VPLMN2中的接入设备向AMF2发送注册请求(registration request)消息，以使得AMF2网元接收来自终端的注册请求消息。
其中，注册请求消息中可以包括终端的标识信息和注册类型。其中，注册类型为移动性注册更新。
S602、AMF2向AMF1/MME发送上下文传输请求(context transfer request)消息，以使得AMF1/MME网元接收来自AMF2网元的上下文传输请求消息，该上下文传输请求消息用于请求获取终端的上下文。
其中，本申请实施例中，AMF1/MME接收来自AMF2的上下文传输请求消息之后，可以获知终端离开AMF1/MME所在的VPLMN1，在此统一说明，以下不再赘述。
S603、AMF1/MME向AMF2发送上下文传输响应(context transfer response)消息，以使得AMF2接收来自AMF1/MME的上下文传输响应消息。其中，该上下文传输响应消息包括终端的上下文。
S604、AMF2向AMF1/MME发送注册完成通知(registration complete notify)，以使得 AMF1接收来自AMF2的注册完成通知。该注册完成通知用于通知AMF1/MME在AMF2网元的注册完成。
S605、AMF2向UDM注册，并获取终端的签约数据。
具体的，AMF2向UDM发送Nudm_终端上下文管理(UE Context Management)注册(Nudm_UECM_Registration)消息，进行注册。UDM返回确认消息。AMF2向UDM发送Nudm_SDM_Get Request消息，请求UE的签约信息。UDM向AMF2返回签约信息。
可选的，若UDM没有UE的签约信息，则UDM向H-UDR发送Nudr_DM_Query Request请求UE的签约信息。
可选的，AMF2还可以向UDM发送订阅请求(比如为：Nudm_SDM_Subscribed Request)，订阅签约数据改变的通知。UDM进一步向H-UDR发送订阅请求(比如：Nudr_DM_Subscribed Request)，订阅签约数据改变的通知。
S606、UDM向AMF1发送去注册通知请求(deregistration notification request)，以使得AMF1接收来自UDM的去注册通知请求。其中，该去注册通知请求用于AMF1删除终端的上下文。
AMF1向UDM发送去注册通知响应(deregistration notification response)，以使得UDM接收来自AMF1的去注册通知响应。
当然，AMF1在接收来自UDM的去注册通知请求之后，还可能取消订阅签约数据修改通知，具体可参考现有的实现方式，在此不予赘述。
S607、AMF2重新选择V-PCF和H-PCF，假设分别为V-PCF2和H-PCF2，则AMF2向V-PCF2网元发送接入和移动性管理(Access and Mobility Management,简称AM)策略关联创建请求消息1，以使得V-PCF2接收来自AMF2的AM策略关联创建请求消息1，该AM策略关联创建请求消息1用于请求创建AM策略关联。进一步的，V-PCF2向H-PCF2发送AM策略关联创建请求消息2，以使得H-PCF2接收来自V-PCF2的AM策略关联创建请求消息2，该AM策略关联创建请求消息2用于请求创建AM策略关联。H-PCF2向V-PCF2发送AM策略关联创建响应消息2，以使得V-PCF2接收来自H-PCF2的AM策略关联创建响应消息2。V-PCF2向AMF2发送AM策略关联创建响应消息1，以使得AMF2接收来自V-PCF2的策略关联建立响应消息1。
其中，这里的AM策略关联指的是，AMF2和V-PCF2之间、V-PCF2和H-PCF2之间的一个关联，这个关联用于AMF2向V-PCF2、V-PCF2向H-PCF2传递终端当前的接入相关的参数、以及H-PCF2向AMF2、V-PCF2向AMF2提供终端相关的接入和移动性管理策略等，相关描述可参考现有的AM策略关联的定义，在此不再赘述。
示例性的，本申请实施例中的策略关联创建请求消息1例如可以为策略控制创建请求(Npcf_AMPolicyCcontrol_Create request)消息1；策略关联创建响应消息1例如可以为策略控制创建响应(Npcf_AMPolicy_ControlCreate response)消息1，本申请实施例对此不作具体限定。
若H-PCF2没有UE的签约参数，则H-PCF2与H-UDR交互，获取终端的策略签约，并订阅策略签约数据改变的通知。H-PCF2根据策略签约数据制定接入和移动性策略，并在应答消息中发送给AMF2。
S608、AMF2向终端发送注册接受(Registration Accept)消息，以使终端接收该注册接 受消息。
S609、终端向AMF2发送注册完成(Registration Complete)消息，以使AMF2接收该注册完成消息。
S610、AMF2向V-PCF2发送终端策略关联创建请求消息1，以使得V-PCF2接收来自AMF2的终端策略关联创建请求消息1，该终端策略关联创建请求消息1用于请求创建终端策略关联。进一步的，V-PCF2向H-PCF2发送终端策略关联创建请求消息2，以使得H-PCF2接收来自V-PCF2的终端策略关联创建请求消息2，该终端策略关联创建请求消息2用于请求创建终端策略关联。H-PCF2向V-PCF2发送终端策略关联创建响应消息2，以使得V-PCF2接收来自H-PCF2的终端策略关联创建响应消息2。V-PCF2向AMF2发送终端策略关联建立响应消息1，以使得AMF2接收来自V-PCF2的终端策略关联建立响应消息1。
其中，AMF2在发送给V-PCF2的终端策略关联创建请求消息1中携带移动类型指示信息，所述移动类型指示信息包括用于指示所述终端执行了跨公共陆地移动网络移动、和用于指示所述终端执行了公共陆地移动网络内移动中的至少一个。V-PCF2根据该移动类型指示信息确定是否提供终端策略。
在一种具体实现中，若AMF2判断与AMF1不在同一个PLMN，或，若AMF2判断对端是MME(即EPS网元)，则AMF2在发送给V-PCF2的消息中包括移动类型指示信息，该移动类型指示信息包括用于指示所述终端执行了跨公共陆地移动网络移动、和用于指示所述终端执行了公共陆地移动网络内移动中的至少一个。
其中，这里的终端策略关联指的是，AMF2和V-PCF2、V-PCF2和H-PCF2之间的一个关联，这个关联用于AMF2向V-PCF2、V-PCF2向H-PCF2传递终端当前的接入相关的参数、以及H-PCF2向V-PCF2、V-PCF2向AMF2提供终端的策略等，相关描述可参考现有的终端策略关联的定义，在此不再赘述。
示例性的，本申请实施例中的终端策略关联创建请求消息1例如可以为终端策略控制创建请求消息(Npcf_UEPolicyControl_Create request)消息1；终端策略关联创建响应消息1例如可以为终端策略控制创建响应(Npcf_UE Policy Control_Create response)消息1。本申请实施例中的终端策略关联创建请求消息2例如可以为终端策略控制创建请求(Npcf_UE Policy Control_Create request)消息2；终端策略关联创建响应消息2例如可以为终端策略控制创建响应(Npcf_UEPolicyControl_Create response)消息2。本申请实施例对此不作具体限定。
若H-PCF2没有终端相关的签约，则H-PCF2与H-UDR交互，获取终端的策略签约，并订阅策略签约数据改变的通知。
进一步的，若对端是AMF1，则接着执行S611。若对端是MME，则不执行步骤S611和步骤S612，执行S613。
S611、AMF1向V-PCF1发送AM策略关联删除请求消息1，请求删除AM策略关联(AM Policy Association)，V-PCF1接收来自AMF1的AM策略关联删除请求消息1。V-PCF1向H-PCF1发送AM策略关联删除请求消息1，请求删除AM Policy Association，H-PCF1接收来自V-PCF1的AM策略关联删除请求消息1。
H-PCF1向V-PCF1发送AM策略关联删除响应1，V-PCF1向AMF1发送AM策略关联删除响应1，以使得AMF1接收来自V-PCF1的AM策略关联删除响应1。
示例性的，AM策略关联删除请求消息1例如可以是Npcf_AMPolicyControl_Delete request。AM策略关联删除响应1例如可以是Npcf_AMPolicyControl_Delete response。
S612、AMF1向V-PCF1发送终端策略关联删除请求消息1，请求删除终端策略关联(UE Policy Association)，V-PCF1接收来自AMF1的终端策略关联删除请求消息1。V-PCF1向H-PCF1发送终端策略关联删除请求消息1，请求删除UE Policy Association，H-PCF1接收来自V-PCF1的终端策略关联删除请求消息1。
H-PCF1向V-PCF1发送终端策略关联删除响应1，V-PCF1向AMF1发送终端策略关联删除响应1，以使得AMF1接收来自V-PCF1的终端策略关联删除响应1。
示例性的，终端策略关联删除请求消息1例如可以是Npcf_UEPolicyControl_Delete request。终端策略关联删除响应1例如可以是Npcf_UEPolicyControl_Delete response。
S613、V-PCF2确定是否提供终端策略。
V-PCF2与V-UDR交互，可能获取VPLMN为终端制定的终端策略(UE Policy)，其中包括终端策略片段标识(UE Policy Section Identifier，UPSI)列表和对应的内容。
在V-PCF2在S610中接收到的移动类型指示信息为用于指示所述终端执行了跨公共陆地移动网络移动、或用于指示所述终端执行了公共陆地移动网络内移动的情况下，则确定需要向终端提供终端策略。
可选的，在V-PCF2接收到的移动类型指示信息为用于指示所述终端执行了跨公共陆地移动网络移动、或用于指示所述终端执行了公共陆地移动网络内移动的情况下，且V-PCF2没有接收到不支持ANDSP的指示的情况下，则确定需要向终端提供终端策略。
S614、V-PCF2将更新或新制定的终端策略通过N1N2消息传输请求(Namf_Commmuncation_N1N2MesageTransfer Request)消息发送给AMF2，AMF2接收更新或新制定的终端策略。
S615、AMF2将终端策略发送给终端，终端接收该终端策略。
S616、终端保存接收到的UE Policy，向AMF2返回执行结果，AMF2接收该执行结果。
S617、AMF2将接收的执行结果发送给V-PCF2，V-PCF2接收该执行结果。比如，可以通过Namf_N1MessageNotify发送给V-PCF2。
基于本申请实施例提供的策略提供方法，V-PCF2接收移动类型指示信息，然后根据该移动类型示信息来确定是否提供终端策略。从而解决了现有技术中漫游场景下，当终端进行初始附着后，终端因为移动发生AMF重选的流程中，终端移动进入的新AMF所在的PLMN内的策略控制网元不确定是否需要下发终端策略的问题。
在图6所示的实施例中，VPLMN1和VPLMN2可以是不同的VPLMN网络，也可以是相同的VPLMN网络。
其中，上述步骤S601至S617中的AMF2或者V-PCF2的动作可以由图5所示的通信设备500中的处理器501调用存储器503中存储的应用程序代码来执行，本申请实施例对此不作任何限制。
图6所示的流程中，在具体实现中，作为一种具体的实现方式，在S610中，根据接收到的移动类型指示信息，V-PCF2向H-PCF2发送的终端策略关联创建请求消息2中，不携带请求终端策略的指示，以使H-PCF2在确定请求消息2中没有携带请求终端策略的指示的情况下，确定不提供终端策略或者根据运营商的策略更新终端策略。
其中，该请求终端策略的指示可以是：初始注册指示，从演进的分组系统移动到第五代移动通信系统的注册指示，终端策略片段标识，操作系统标识，支持ANDSP的指示，或，不支持ANDSP的指示中的任意一个。本申请不做限定。
需要说明的是，在该实施例中，在终端发生移动之前，终端是由AMF1提供服务的。则终端触发初始注册流程进行AMF1的初始注册。初始注册的流程可以参见现有技术，这里不再赘述。
和现有技术的初始注册流程所不同的是：在AMF1向V-PCF1发送的终端策略关联创建请求消息3中，包括了请求终端策略的指示。V-PCF1进一步的将该请求终端策略的指示发给了H-PCF1。
可选地，当AMF1没有接收到包括UE state indication的情况下，在发送给V-PCF1的消息中包括请求终端策略的指示。
可选地，当V-PCF1没有接收到包括UE state indication的情况下，在发送给H-PCF1的消息中包括请求终端策略的指示。
进一步的，当H-PCF1在确定是否提供终端策略时，H-PCF1与H-UDR交互，可能获取HPLMN为终端制定的UE Policy。H-PCF1根据请求终端策略的指示，为终端制定UE Policy。
图6所示的流程中，在具体实现中，作为一种具体的实现方式，在S610中，根据接收到的移动类型(Inter-PLMN、Inter-system或Intra-PLMN任一个)，V-PCF2向H-PCF2发送的终端策略关联创建请求消息2中，携带不需要发送终端策略的指示信息，以使H-PCF2在确定请求消息2中携带不需要发送终端策略的指示信息的情况下，确定不提供终端策略或者根据运营商的策略更新终端策略。
需要说明的是，在该实施例中，在终端发生移动之前，终端是由AMF1提供服务的。则终端触发初始注册流程进行AMF1的初始注册。初始注册的流程可以参见现有技术，这里不再赘述。
可选的，在图6所示的流程中，提供了另一种策略提供方法，包括：第一拜访地网络的第一策略控制网元接收来自第一拜访地网络的移动性管理网元的用于创建终端策略关联的第一请求消息，该第一请求消息中携带移动类型指示信息，该移动类型指示信息包括用于指示所述终端执行了移动性管理网元重选、所述终端执行了跨公共陆地移动网络移动、和所述终端执行了公共陆地移动网络内移动中的一个。该第一策略控制功能网元向终端归属地的第二策略控制网元发送用于创建终端策略关联的第二请求消息，该第二请求消息中携带不需要终端策略的指示信息或不携带请求终端策略的指示信息，以使该第二策略控制网元不提供终端策略或者根据运营商的策略更新终端策略。通过该方法，可以使得终端因为移动发生了移动性管理网元重选，终端归属地的策略控制网元不确定是否需要下发终端的策略的问题。
在具体实现中，作为一种具体的实现方式，以图3所示的策略提供系统应用于图1所示的家乡路由漫游场景下的5G网络架构中或者图2所示的本地疏导漫游场景为例，假设终端的HPLMN中包括UDM网元、H-PCF1网元、H-PCF2网元和H-UDR网元，终端从AMF1网元、V-PCF1网元等所在的VPLMN1离开，进入AMF2网元、V-PCF2网元网元等所在的VPLMN2，则如图7所示，为本申请实施例提供的另一种策略提供方法，包括如下步骤：
S701、在终端跨公共陆地移动网络移动到第五代移动通信系统的情况下，终端通过VPLMN2中的接入设备向AMF2发送注册请求(registration request)消息，以使得AMF2网元接收来自终端的注册请求消息。该注册请求消息携带第一指示信息，该第一指示信息用于指示网络提供终端策略。具体实现中，第一指示信息可以是：终端策略片段标识、操作系统标识、支持接入网发现和选择策略的指示，不支持接入网发现和选择策略的指示，或，置为空的终端状态指示信息中的至少一个。
S702-S709，同S602-S609。这里不再赘述。
S710，AMF2向V-PCF2发送终端策略关联创建请求消息1，以使得V-PCF2接收来自AMF2的终端策略关联创建请求消息1，该终端策略关联创建请求消息1用于请求创建终端策略关联。进一步的，V-PCF2向H-PCF2发送终端策略关联创建请求消息2，以使得H-PCF2接收来自V-PCF2的终端策略关联创建请求消息2，该终端策略关联创建请求消息2用于请求创建终端策略关联。H-PCF2向V-PCF2发送终端策略关联创建响应消息2，以使得V-PCF2接收来自H-PCF2的终端策略关联创建响应消息2。V-PCF2向AMF2发送终端策略关联建立响应消息1，以使得AMF2接收来自V-PCF2的终端策略关联建立响应消息1。
其中，AMF2在发送给V-PCF2的终端策略关联创建请求消息1中携带第二指示信息和第一指示信息。V-PCF2根据第二指示信息和第一指示信息确定提供终端策略。第二指示信息用于指示终端进行了跨PLMN的移动、用于指示AMF进行了重选或用于指示拜访网络提供终端策略。
在一种具体实现中，若AMF2判断与AMF1不在同一个PLMN，或者，若AMF2判断对端是MME(即EPS网元)，则AMF2在发送给V-PCF2的消息中包括第二指示信息。
这里的终端策略关联，终端策略关联创建请求消息1，终端策略关联创建请求消息2，终端策略关联创建响应消息1和终端策略关联创建响应消息2同S610中的描述，在此不再赘述。
进一步的，若对端是AMF1，则接着执行S711。若对端是MME，则不执行步骤S711和步骤S712，执行S713。
S711-S717，同S611-S617。这里不再赘述。
基于本申请实施例提供的策略提供方法，终端发送用于指示网络提供终端策略的第一指示信息，AMF2确定终端移动后，再将第二指示信息和第一指示信息发给V-PCF2，V-PCF2根据第二指示信息和第一指示信息来确定是否提供终端策略。从而解决了现有技术中漫游场景下，当终端进行初始附着后，终端因为移动发生AMF重选的流程中，终端移动进入的新AMF所在的PLMN内的策略控制网元不确定是否需要下发终端策略的问题。
在图7所示的实施例中，VPLMN1和VPLMN2可以是不同的VPLMN网络，也可以是相同的VPLMN网络。
其中，上述步骤S701至S717中的终端或者V-PCF2的动作可以由图5所示的通信设备500中的处理器501调用存储器503中存储的应用程序代码来执行，本申请实施例对此不作任何限制。
在图7所示的流程中，在具体实现中，作为一种具体的实现方式，还包括S700，就是终端确定跨公共陆地移动网络移动到第五代移动通信系统。然后，S701中终端发送的注册请求消息中的第一指示信息，具体就是用于指示拜访网络提供终端策略。接着，S710中， AMF2发送终端策略关联创建请求消息1前，就不需要确定终端的移动情况，也不需要发送第二指示信息给V-PCF2。也就是说，AMF2发送给V-PCF2的终端策略关联创建请求消息1中只携带第一指示信息了，不需要携带第二指示信息。其他步骤和图7类似。这里不再赘述。其中，终端确定移动到第五代移动通信系统的方法可以参考现有技术，比如终端根据接入的基站来确定移动到了第五代移动通信系统，本申请不做具体限定。
图7所示的流程中，在具体实现中，作为一种具体的实现方式，在S710中，根据接收到的第二指示信息，V-PCF2向H-PCF2发送的终端策略关联创建请求消息2中，不携带第四指示信息，以使H-PCF2在确定请求消息2中没有携带第四指示信息的情况下，确定不提供终端策略或者根据运营商的策略更新终端策略。其中，第四指示信息用于指示网络提供终端策略。
其中，该第四指示信息可以是：初始注册指示，从演进的分组系统移动到第五代移动通信系统的注册指示，终端策略片段标识，操作系统标识，支持ANDSP的指示，不支持ANDSP的指示，或，置为空的终端状态指示信息中的至少一个。本申请不做限定。
需要说明的是，在该实施例中，在终端发生移动之前，终端是由AMF1提供服务的。则终端触发初始注册流程进行AMF1的初始注册。初始注册的流程可以参见现有技术，这里不再赘述。
和现有技术的初始注册流程所不同的是：在AMF1向V-PCF1发送的终端策略关联创建请求消息3中，包括了初始注册指示。V-PCF1进一步的将该初始注册指示发给了H-PCF1。
可选地，当AMF1没有接收到包括UPSI和/或不支持ANDSP的指示的UE state indication时，在发送给V-PCF1的消息中包括第四指示信息。
可选地，当V-PCF1没有接收到包括UE state indication的情况下，在发送给H-PCF1的消息中包括第四指示信息。
进一步的，当H-PCF1在确定是否提供终端策略时，H-PCF1与H-UDR交互，可能获取HPLMN为终端制定的终端策略。H-PCF1根据第四指示信息，为终端制定终端策略。
图7所示的流程中，在具体实现中，作为一种具体的实现方式，在S710中，根据接收到的第二指示信息和第一指示信息，V-PCF2向H-PCF2发送的终端策略关联创建请求消息2中，携带第三指示信息，以使H-PCF2在确定请求消息2中携带第三指示信息的情况下，根据第三指示信息确定不提供终端策略或者根据运营商的策略更新终端策略。其中，第三指示信息包括不需要提供终端策略的指示、移动性管理网元重选的指示或跨公共陆地移动网络移动的指示中的任意一个。
需要说明的是，在该实施例中，在终端发生移动之前，终端是由AMF1提供服务的。则终端触发初始注册流程进行AMF1的初始注册。初始注册的流程可以参见现有技术，这里不再赘述。
上述主要从各个网元之间交互的角度对本申请实施例提供的方案进行了介绍。可以理解的是，上述实现移动性管理功能实体或会话管理功能实体的设备(或：装置)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移动性管理功能实体或会话管理功能实体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。
比如，以采用集成的方式划分各个功能模块的情况下，图8示出了一种通信装置80的结构示意图。该装置80可以是图3中第一拜访地网络的策略控制功能网元，也可以是策略控制功能网元内的芯片，本申请实施例对此不作具体限定。其中，该通信装置80包括：接收模块801和处理模块802。接收模块801，用于接收来自第一拜访地网络的移动性管理网元的用于创建终端策略关联的第一请求消息，所述第一请求消息中携带指示信息，所述指示信息包括用于指示所述终端执行了跨公共陆地移动网络移动、和用于指示所述终端执行了公共陆地移动网络内移动中的一个。处理模块802，用于根据所述指示信息确定是否提供终端策略。
可选的，处理模块802，具体用于：在所述指示信息为用于指示所述终端执行了跨公共陆地移动网络移动的情况下，确定提供终端策略。
或者，可选的，处理模块802，具体用于：在所述指示信息为用于指示所述终端执行了公共陆地移动网络内移动的情况下，确定不提供终端策略。
可选的，还包括发送模块803。发送模块803，用于向终端归属地的第二策略控制网元发送用于创建终端策略关联的第二请求消息，第二请求消息中携带不需要发送终端策略的指示信息，以使所述第二策略控制网元根据所述不需要发送终端策略的指示信息不提供终端策略或者根据运营商的策略更新终端策略。
或者，可选的，还包括发送模块803。发送模块803，还用于向所述终端归属地的第二策略控制网元发送用于创建终端策略关联的第二请求消息，第二请求消息中不携带请求终端策略的指示，以使所述第二策略控制网元不提供终端策略或者根据运营商的策略更新终端策略。
可选的，所述第二策略控制网元不提供终端策略，或者根据运营商的策略更新终端策略具体包括：若根据运营商的策略确定需要更新归属地的终端策略的内容，则发送更新的归属地的终端策略；或，若根据运营商的策略确定不需要更新归属地的终端策略的内容，所述第二策略控制网元不提供终端策略。
可选的，发送模块803具体用于：根据所述指示信息向所述第二策略控制网元发送用于创建终端策略关联的第二请求消息。
在具体实现中，请求终端策略的指示可以为：初始注册指示，从演进的分组系统移动到第五代移动通信系统的注册指示，终端策略片段标识，操作系统标识，支持接入网发现和选择策略的指示，或，不支持接入网发现和选择策略的指示中的任意一个。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
再比如，以采用集成的方式划分各个功能模块的情况下，图9示出了一种通信装置90的结构示意图。该装置90可以是图4中终端，也可以是终端内的芯片，本申请实施例对此 不作具体限定。其中，该通信装置90包括：发送模块901和接收模块902。发送模块901，用于在终端跨公共陆地移动网络移动到第五代移动通信系统的情况下，发送注册请求信息，所述注册请求消息携带第一指示信息，所述第一指示信息用于指示网络提供终端策略。接收模块902，用于接收来自第一拜访地网络的第一策略控制功能网元的终端策略。
在一种具体实现中，第一指示信息具体用于指示拜访网络提供终端策略。
再比如，以采用集成的方式划分各个功能模块的情况下，图10示出了一种通信装置100的结构示意图。该装置100可以是图4中的第一策略控制网元，也可以是第一策略控制网元内的芯片，本申请实施例对此不作具体限定。其中，该通信装置100包括：接收模块1001和处理模块1002。接收模块1001，用于接收来自终端的第一指示信息，所述第一指示信息用于指示网络提供终端策略。处理模块1002，用于根据所述指示信息确定向所述终端提供终端策略。
可选的，第一指示信息具体用于指示拜访网络提供终端策略。这种情况下，通信装置根据该用于指示拜访网络提供终端策略的第一指示信息，就可以确定向终端提供终端策略。
可选的，接收模块1001，还用于接收来自第一拜访地网络的移动性管理网元的第二指示信息和所述第一指示信息，所述第二指示信息用于指示所述终端进行了跨公共陆地移动网络的移动、用于指示移动性管理网元进行了重选、或用于指示拜访网络提供终端策略。
可选的，所述第一指示信息具体用于指示拜访网络提供终端策略，则接收模块，具体用于接收来自所述第一拜访地网络的移动性管理网元的所述第一指示信息。
可选的，该装置还包括发送模块1003。所述发送模块1003，用于向归属地的第二策略控制网元发送用于创建终端策略关联的第二请求消息，所述第二请求消息中携带第三指示信息，以使所述第二策略控制网元根据该第三指示信息不提供终端策略所述第二策略控制网元。
或者，可选的，该装置还包括发送模块1003。所述发送模块1003，用于向归属地的第二策略控制网元发送用于创建终端策略关联的第二请求消息，所述第二请求消息中不携带第四指示信息，以使所述第二策略控制网元不提供终端策略所述第二策略控制网元。第四指示信息用于指示网络提供终端策略。
可选的，所述发送模块1003，具体用于根据第一指示信息，或根据所述第一指示信息和所述第二指示信息向所述第二策略控制网元发送用于创建终端策略关联的第二请求消息。
可选的，接收模块1001，还用于在初始注册流程或所述终端从演进的分组系统到第五代移动通信系统的注册中，接收来自所述第二拜访地的移动性管理网元的用于创建终端策略关联的第三请求消息，所述第三请求消息中携带所述第四指示信息。发送模块1003，还用于发送创建终端策略关联的第四请求消息给归属地的第四策略控制网元，该第四请求消息中携带第四指示信。其中，第四指示信息用于使第四策略控制网元提供终端策略。
在图8，9和10的实施例中，通信装置80，90或100以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定应用集成电路(application-specific integrated circuit，ASIC)，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。
在一个简单的实施例中，本领域的技术人员可以想到装置80，90或100可以采用图5所 示的形式。
比如，图5中的处理器501可以通过调用存储器503中存储的计算机执行指令，使得装置80，90或100执行上述方法实施例中的策略提供方法。
以上模块或单元的一个或多个可以软件、硬件或二者结合来实现。当以上任一模块或单元以软件实现的时候，所述软件以计算机程序指令的方式存在，并被存储在存储器中，处理器可以用于执行所述程序指令并实现以上方法流程。该处理器可以内置于SoC(片上系统)或专用集成电路(application specific integrated circuit，ASIC)，也可是一个独立的半导体芯片。该处理器内处理用于执行软件指令以进行运算或处理的核外，还可进一步包括必要的硬件加速器，如现场可编程门阵列(field programmable gate array，FPGA)、PLD(可编程逻辑器件)、或者实现专用逻辑运算的逻辑电路。
当以上模块或单元以硬件实现的时候，该硬件可以是CPU、微处理器、DSP、MCU、人工智能处理器、ASIC、SoC、FPGA、PLD、专用数字电路、硬件加速器或非集成的分立器件中的任一个或任一组合，其可以运行必要的软件或不依赖于软件以执行以上方法流程。
具体的，图8，9或10中的接收模块和处理模块的功能/实现过程可以通过图5中的处理器501调用存储器503中存储的计算机执行指令来实现。或者，图8，9或10中的处理模块的功能/实现过程可以通过图5中的处理器501调用存储器503中存储的计算机执行指令来实现，图8，9或10中的接收模块和发送模块的功能/实现过程可以通过图5中的通信接口504来实现。
可选的，当该装置80，90或100是芯片时，那么接收模块和发送模块的功能/实现过程还可以通过管脚或电路等来实现。可选地，当该装置80，90或100是芯片时，所述存储器可以为所述芯片内的存储单元，如寄存器、缓存等。当然，当该装置80，90或100是芯片时，所述存储器还可以是所述装置内的位于所述芯片外部的存储单元。
由于本申请实施例提供的装置可用于执行上述策略提供方法，因此其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。
可选的，本申请实施例提供了一种芯片系统，该芯片系统包括处理器，用于支持第一策略控制网元实现上述的策略提供方法。在一种可能的设计中，该芯片系统还包括存储器。该存储器，用于保存第一策略控制网元必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件，本申请实施例对此不作具体限定。
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 (40)

  1. 一种策略提供方法，其特征在于，包括：
    在终端跨公共陆地移动网络移动到第五代移动通信系统的情况下，通信装置发送注册请求信息，所述注册请求消息携带第一指示信息，所述第一指示信息用于指示网络提供终端策略；
    所述通信装置接收来自第一拜访地网络的第一策略控制功能网元的终端策略。
  2. 根据权利要求1所述的策略提供方法，其特征在于，通信装置发送注册请求信息具体包括：
    通信装置发送注册请求消息给所述第一拜访地网络的移动性管理网元；
    所述移动性管理网元发送第二指示信息和所述第一指示信息给所述第一策略控制功能网元，所述第二指示信息用于指示所述终端进行了跨公共陆地移动网络的移动、用于指示移动性管理网元进行了重选或用于指示拜访网络提供终端策略。
  3. 根据权利要求1所述的策略提供方法，其特征在于，所述第一指示信息具体用于指示拜访网络提供终端策略，
    相应的，通信装置发送注册请求信息具体包括：
    通信装置发送注册请求消息给所述第一拜访地网络的移动性管理网元；
    所述移动性管理网元发送所述第一指示信息给所述第一策略控制功能网元。
  4. 根据权利要求1或2所述的策略提供方法，其特征在于，所述第一指示信息包括：需要终端策略指示、终端策略片段标识、支持接入网发现和选择策略的指示、不支持接入网发现和选择策略的指示、操作系统标识、或置为空的终端状态指示信息中的至少一个。
  5. 根据权利要求1-4任一所述的策略提供方法，所述通信装置包括所述终端。
  6. 一种策略提供方法，其特征在于，包括：
    第一拜访地网络的第一策略控制功能网元接收来自终端的第一指示信息，所述第一指示信息用于指示网络提供终端策略；
    所述第一策略控制功能网元根据所述第一指示信息确定向所述终端提供终端策略。
  7. 根据权利要求6所述的策略提供方法，其特征在于，还包括：
    所述第一策略控制功能网元接收来自第一拜访地网络的移动性管理网元的第二指示信息和所述第一指示信息，所述第二指示信息用于指示所述终端进行了跨公共陆地移动网络的移动、用于指示移动性管理网元进行了重选或用于指示拜访网络提供终端策略。
  8. 根据权利要求6所述的策略提供方法，其特征在于，所述第一指示信息具体用于指示拜访网络提供终端策略，
    所述第一策略控制功能网元接收来自终端的第一指示信息具体包括：
    所述第一策略控制功能网元接收来自所述第一拜访地网络的移动性管理网元的所述第一指示信息。
  9. 根据权利要求6-8任一所述的策略提供方法，其特征在于，还包括：所述第一策略控制功能网元向归属地的第二策略控制网元发送用于创建终端策略关联的第二请求消息，所述第二请求消息中携带第三指示信息，以使所述第二策略控制网元根据所述第三指示信息不提供终端策略，或者根据运营商的策略更新终端策略。
  10. 根据权利要求9所述的策略提供方法，所述第二策略控制网元根据所述第三指示信 息不提供终端策略，或者根据运营商的策略更新终端策略具体包括：
    若根据运营商的策略确定需要更新归属地的终端策略的内容，则发送更新的归属地的终端策略；或，
    若根据运营商的策略确定不需要更新归属地的终端策略的内容，所述第二策略控制网元不提供终端策略。
  11. 根据权利要求9或10所述的策略提供方法，其特征在于，所述第三指示信息包括不需要提供终端策略的指示、移动性管理网元重选的指示或跨公共陆地移动网络移动的指示中的任意一个。
  12. 根据权利要求6-8任一所述的策略提供方法，其特征在于，还包括：所述第一策略控制功能网元向归属地的第二策略控制网元发送用于创建终端策略关联的第二请求消息，所述第二请求消息中不携带第四指示信息，以使所述第二策略控制网元不提供终端策略或者根据运营商的策略更新终端策略，所述第四指示信息用于指示网络提供终端策略。
  13. 根据权利要求9-12任一所述的策略提供方法，其特征在于，所述第一策略控制功能网元向所述归属地的第二策略控制网元发送用于创建终端策略关联的第二请求消息具体包括：
    所述第一策略控制功能网元根据所述第一指示信息，或根据所述第一指示信息和所述第二指示信息向所述第二策略控制网元发送用于创建终端策略关联的第二请求消息。
  14. 根据权利要求12或13所述的策略提供方法，其特征在于，还包括：
    在初始注册流程或所述终端从演进的分组系统到第五代移动通信系统的注册中，第二拜访地的第三策略控制网元接收来自所述第二拜访地的移动性管理网元的用于创建终端策略关联的第三请求消息，所述第三请求消息中携带所述第四指示信息；
    所述第三策略控制网元发送用于创建终端策略关联的第四请求消息给归属地的第四策略控制网元，所述第四请求消息中携带所述第四指示信息，所述第四指示信息用于使所述第四策略控制网元提供终端策略。
  15. 根据权利要求14所述的策略提供方法，其特征在于，所述第三策略控制网元发送所述第四指示信息给所述第四策略控制网元具体包括：
    在所述第三策略控制网元接收的第三请求消息中不包括终端状态指示信息的情况下，所述第三策略控制网元发送所述第四指示信息给所述第四策略控制网元。
  16. 根据权利要求9-15任一所述的策略提供方法，其特征在于，所述第四指示信息包括：初始注册指示、从演进的分组系统移动到第五代移动通信系统的注册指示、终端策略片段标识、操作系统标识、支持接入网发现和选择策略的指示、不支持接入网发现和选择策略的指示、或，置为空的终端状态指示信息中的任意一个。
  17. 根据权利要求6-16任一所述的策略提供方法，其特征在于，所述第一指示信息包括：终端策略片段标识、操作系统标识、支持接入网发现和选择策略的指示，不支持接入网发现和选择策略的指示、或置为空的终端状态指示信息中的任意一个。
  18. 一种通信装置，其特征在于，包括：
    发送模块，用于在终端跨公共陆地移动网络移动到第五代移动通信系统的情况下，发送注册请求信息，所述注册请求消息携带第一指示信息，所述第一指示信息用于网络提供终端策略；
    接收模块，用于接收来自第一拜访地网络的第一策略控制功能网元的终端策略。
  19. 根据权利要求18所述的通信装置，其特征在于，所述第一指示信息具体用于指示拜访网络提供终端策略。
  20. 一种通信装置，其特征在于，包括：
    接收模块，用于接收来自终端的第一指示信息，所述第一指示信息用于指示网络提供终端策略；
    处理模块，用于根据所述第一指示信息确定向所述终端提供终端策略。
  21. 根据权利要求20所述的通信装置，其特征在于，接收模块，还用于接收来自第一拜访地网络的移动性管理网元的第二指示信息和所述第一指示信息，所述第二指示信息用于指示所述终端进行了跨公共陆地移动网络的移动、用于指示移动性管理网元进行了重选或用于指示拜访网络提供终端策略。
  22. 根据权利要求20所述的通信装置，其特征在于，所述第一指示信息具体用于指示拜访网络提供终端策略，
    所述接收模块，具体用于接收来自所述第一拜访地网络的移动性管理网元的所述第一指示信息。
  23. 根据权利要求20-22任一所述的通信装置，其特征在于，还包括发送模块，所述发送模块，用于向归属地的第二策略控制网元发送用于创建终端策略关联的第二请求消息，所述第二请求消息中携带第三指示信息，以使所述第二策略控制网元根据所述第三指示信息不提供终端策略，或者根据运营商的策略更新终端策略。
  24. 根据权利要求23所述的通信装置，其特征在于，所述第三指示信息包括不需要提供终端策略的指示、移动性管理网元重选的指示或跨公共陆地移动网络移动的指示。
  25. 根据权利要求20-23任一所述的通信装置，其特征在于，还包括发送模块，所述发送模块，用于向归属地的第二策略控制网元发送用于创建终端策略关联的第二请求消息，所述第二请求消息中不携带第四指示信息，以使所述第二策略控制网元不提供终端策略或者根据运营商的策略更新终端策略，所述第四指示信息用于指示网络提供终端策略。
  26. 根据权利要求23-25任一所述的通信装置，其特征在于，所述发送模块，具体用于根据所述第一指示信息，或根据所述第一指示信息和所述第二指示信息向所述第二策略控制网元发送用于创建终端策略关联的第二请求消息。
  27. 根据权利要求25-26任一所述的通信装置，其特征在于，所述第四指示信息包括：初始注册指示、从演进的分组系统移动到第五代移动通信系统的注册指示、终端策略片段标识、操作系统标识、支持接入网发现和选择策略的指示、不支持接入网发现和选择策略的指示、或，置为空的终端状态指示信息中的至少一个。
  28. 一种策略提供方法，其特征在于，包括：
    在终端跨公共陆地移动网络移动到第五代移动通信系统的情况下，终端发送注册请求信息给第一拜访地的移动性管理网元，所述注册请求消息携带第一指示信息，所述第一指示信息用于指示网络提供终端策略；
    第一拜访地网络的第一策略控制功能网元接收来自所述移动性管理网元的所述第一指示信息；
    所述第一策略控制功能网元根据所述第一指示信息确定向所述终端提供终端策略。
  29. 根据权利要求28所述的策略提供方法，其特征在于，还包括：
    所述第一策略控制功能网元接收来自所述移动性管理网元的第二指示信息，所述第二指示信息用于指示所述终端进行了跨公共陆地移动网络的移动、用于指示移动性管理网元进行了重选或用于指示拜访网络提供终端策略；
    相应的，所述第一策略控制功能网元根据所述第一指示信息确定向所述终端提供终端策略具体包括：
    所述第一策略控制功能网元根据所述第二指示信息和所述第一指示信息确定向所述终端提供终端策略。
  30. 一种策略提供系统，其特征在于，包括终端和第一拜访地网络的第一策略控制功能网元，
    所述终端，用于在终端跨公共陆地移动网络移动到第五代移动通信系统的情况下，发送注册请求信息给第一拜访地的移动性管理网元，所述注册请求消息携带第一指示信息，所述第一指示信息用于指示网络提供终端策略；
    所述第一策略控制功能网元，用于接收来自所述移动性管理网元的所述第一指示信息，根据所述第一指示信息确定向所述终端提供终端策略。
  31. 根据权利要求30所述的策略提供系统，其特征在于，
    所述第一策略控制功能网元，还用于接收来自所述移动性管理网元的第二指示信息，所述第二指示信息用于指示所述终端进行了跨公共陆地移动网络的移动、用于指示移动性管理网元进行了重选或用于指示拜访网络提供终端策略；
    相应的，所述第一策略控制功能网元用于根据所述第一指示信息确定向所述终端提供终端策略具体包括：所述第一策略控制功能网元用于根据所所述第二指示信息和所述第一指示信息确定向所述终端提供终端策略。
  32. 根据权利要求30或31所述的策略提供系统，其特征在于，还包括归属地的第二策略控制网元，
    所述第一策略控制功能网元，还用于向所述第二策略控制网元发送用于创建终端策略关联的第二请求消息，所述第二请求消息中携带第三指示信息；
    所述第二策略控制网元，用于根据所述第三指示信息不提供终端策略，或者根据运营商的策略更新终端策略。
  33. 一种通信装置，其特征在于，包括：处理器和存储器；所述存储器用于存储计算机执行指令，当所述通信装置运行时，所述处理器执行所述存储器存储的所述计算机执行指令，以使所述通信装置执行如权利要求1-5任一项所述的策略提供方法。
  34. 一种通信装置，其特征在于，包括：处理器和存储器；所述存储器用于存储计算机执行指令，当所述通信装置运行时，所述处理器执行所述存储器存储的所述计算机执行指令，以使所述通信装置执行如权利要求6-17任一项所述的策略提供方法。
  35. 一种处理器，其特征在于，用于执行如权利要求1-5任一项，或权利要求6-17任一项所述的策略提供方法。
  36. 一种芯片系统，其特征在于，包括：
    存储器，用于存储计算机程序；
    处理器，用于从所述存储器调用并运行所述计算机程序，使得安装有所述芯片系统的设 备执行如权利要求1-5任一项，或权利要求6-17任一项所述的策略提供方法。
  37. 一种计算机可读存储介质，包括计算机程序，当其在计算机上运行时，使得所述计算机执行如权利要求1-5任一项，或权利要求6-17任一项所述的策略提供方法。
  38. 一种计算机程序产品，所述计算机程序产品包括计算机程序，当所述计算机程序在计算机上运行时，使得计算机执行如权利要求1-5任一项，或权利要求6-17任一项所述的策略提供方法。
  39. 一种用来执行权利要求1-5任一项所述的策略提供方法的装置。
  40. 一种用来执行权利要求6-17任一项所述的策略提供方法的装置。
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