WO2025232190A1 - 分段路径控制方法、设备、系统和存储介质及程序产品 - Google Patents

分段路径控制方法、设备、系统和存储介质及程序产品

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Publication number
WO2025232190A1
WO2025232190A1 PCT/CN2024/138371 CN2024138371W WO2025232190A1 WO 2025232190 A1 WO2025232190 A1 WO 2025232190A1 CN 2024138371 W CN2024138371 W CN 2024138371W WO 2025232190 A1 WO2025232190 A1 WO 2025232190A1
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WO
WIPO (PCT)
Prior art keywords
amf
information
srv6
policy control
indication information
Prior art date
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Application number
PCT/CN2024/138371
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English (en)
French (fr)
Inventor
李金艳
高秋悦
薛俊礼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Telecom Corp Ltd Technology Innovation Center
China Telecom Corp Ltd
Original Assignee
China Telecom Corp Ltd Technology Innovation Center
China Telecom Corp Ltd
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Application filed by China Telecom Corp Ltd Technology Innovation Center, China Telecom Corp Ltd filed Critical China Telecom Corp Ltd Technology Innovation Center
Publication of WO2025232190A1 publication Critical patent/WO2025232190A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/34—Source routing

Definitions

  • This disclosure relates to the field of communication technology, and in particular to a segmented path control method, device, system, storage medium, and program product.
  • SRv6 Segment Routing over IPv6
  • SC Service Classifier
  • SFC Service Function Chain
  • SRv6 provides segmented routing, an editable route management mode, and excellent scalability, solving the problems of route editing and management in next-generation mobile networks.
  • the technology is mature and widely deployed on bearer networks. When applied to mobile network users, it enables unified management and implementation of mobile network-level and mobile-level policies, contributing to improved end-to-end QoS (Quality of Service) management and forwarding capabilities.
  • QoS Quality of Service
  • One objective of this disclosure is to improve the reliability and security of communications using SRv6 as a mobile communication terminal user protocol.
  • a segmented path control method comprising: a UE (User Equipment) receiving an extended policy control instruction from an AMF (Access and Mobility Management Function), the extended policy control instruction including SRv6 forwarding path indication information; and the UE performing uplink segment routing selection based on the SRv6 forwarding path indication information.
  • a UE User Equipment
  • AMF Access and Mobility Management Function
  • the SRv6 forwarding path indication information includes an uplink SRv6 segment path indication list.
  • At least one route entry includes the number of nodes the path passes through and information about the nodes passed through.
  • At least one route entry in the uplink SRv6 segment path indication list also includes a route priority.
  • the method further includes: the UE sending a registration request to the AMF, wherein the AMF sends a user policy control establishment request to the PCF (Policy Control Function) according to the registration request, the PCF requests the UE's subscribed URSP (UE Route Selection Policy) information from the UDM (Unified Data Management)/UDR (Unified Data Repository), the UDM/UDR feeds back the URSP information, which includes SRv6 forwarding path indication information, and the PCF feeds back the URSP information to the AMF through an extended policy control establishment response to trigger the AMF to perform the operation of sending an extended policy control instruction to the UE.
  • the AMF sends a user policy control establishment request to the PCF (Policy Control Function) according to the registration request
  • the PCF requests the UE's subscribed URSP (UE Route Selection Policy) information from the UDM (Unified Data Management)/UDR (Unified Data Repository)
  • the UDM/UDR feeds back the URSP information, which includes SRv
  • PCF in response to service parameter update information from AF (Application Function), PCF sends SRv6 forwarding path indication information to AMF via UE policy control update request to trigger AMF to perform the operation of sending extended policy control instructions to UE, wherein the update information includes SRv6 forwarding path indication information.
  • AF Application Function
  • the method further includes: after receiving an extended policy control instruction from the AMF, the UE sends a UE policy update response to the AMF.
  • a segmented path control method comprising: obtaining a UE subscription information request from a PCF; feeding back UE subscription URSP information to the PCF, the URSP information including SRv6 forwarding path indication information, wherein the PCF feeds back the URSP information to the AMF through an extended policy control establishment response, and the AMF sends an extended policy control instruction carrying the SRv6 forwarding path indication information to the UE.
  • a segmented path control method comprising: in response to a request to update the SRv6 route of a UE, sending service parameter update information, the update information including SRv6 forwarding path indication information, wherein the PCF obtains the update information, sends the SRv6 forwarding path indication information to the AMF through a UE policy control update request, and the AMF sends an extended policy control instruction carrying the SRv6 forwarding path indication information to the UE.
  • a segmented path control device comprising: a forwarding rule receiving unit configured to receive an extended policy control instruction from an AMF, the extended policy control instruction including SRv6 forwarding path indication information; and a routing selection unit configured to perform uplink segment routing selection based on the SRv6 forwarding path indication information.
  • the device further includes: a request sending unit configured to send a registration request to the AMF, wherein the AMF sends a user policy control establishment request to the PCF according to the registration request, the PCF requests the UE's subscribed URSP information from the UDM/UDR, the UDM/UDR feeds back the URSP information, the URSP information includes SRv6 forwarding path indication information, and the PCF feeds back the URSP information to the AMF through an extended policy control establishment response to trigger the AMF to perform the operation of sending an extended policy control instruction to the UE.
  • a request sending unit configured to send a registration request to the AMF, wherein the AMF sends a user policy control establishment request to the PCF according to the registration request, the PCF requests the UE's subscribed URSP information from the UDM/UDR, the UDM/UDR feeds back the URSP information, the URSP information includes SRv6 forwarding path indication information, and the PCF feeds back the URSP information to
  • the device further includes: an instruction response unit configured to send a UE policy update response to the AMF after receiving an extended policy control instruction from the AMF, wherein the PCF, in response to the service parameter update information from the AF, sends SRv6 forwarding path indication information to the AMF through a UE policy control update request to trigger the AMF to perform the operation of sending an extended policy control instruction to the UE, wherein the update information includes the SRv6 forwarding path indication information.
  • an instruction response unit configured to send a UE policy update response to the AMF after receiving an extended policy control instruction from the AMF
  • the PCF in response to the service parameter update information from the AF, sends SRv6 forwarding path indication information to the AMF through a UE policy control update request to trigger the AMF to perform the operation of sending an extended policy control instruction to the UE, wherein the update information includes the SRv6 forwarding path indication information.
  • a segmented path control device comprising: a request acquisition unit configured to acquire a UE subscription information request from a PCF; and a policy feedback unit configured to feed back UE subscription URSP information to the PCF, the URSP information including SRv6 forwarding path indication information, wherein the PCF feeds back the URSP information to the AMF through an extended policy control establishment response, and the AMF sends an extended policy control instruction carrying the SRv6 forwarding path indication information to the UE.
  • a segmented path control device comprising: an update request unit configured to send service parameter update information in response to a request to update the SRv6 route of a UE, the update information including SRv6 forwarding path indication information, wherein the PCF obtains the update information, sends the SRv6 forwarding path indication information to the AMF through a UE policy control update request, and the AMF sends an extended policy control instruction carrying the SRv6 forwarding path indication information to the UE.
  • a network device comprising: a memory; and a processor coupled to the memory, the processor being configured to execute any of the segmented path control methods mentioned above based on instructions stored in the memory.
  • a non-transitory computer-readable storage medium on which computer program instructions are stored, which, when executed by a processor, implement any of the segmented path control methods described above.
  • a computer program product including a computer program or instructions that, when executed by a processor, implement any of the segmented path control methods described above.
  • a segmented path control system comprising: a UE configured to execute any of the segmented path control methods performed by the UE described above; and an AMF configured to send an extended policy control instruction to the UE, the extended policy control instruction including SRv6 forwarding path indication information.
  • the system further includes a PCF configured to send SRv6 forwarding path indication information to an AMF to trigger the AMF to perform an operation of sending an extended policy control command to the UE.
  • a PCF configured to send SRv6 forwarding path indication information to an AMF to trigger the AMF to perform an operation of sending an extended policy control command to the UE.
  • the AMF is further configured to receive a registration request from the UE and send a user policy control establishment request to the PCF;
  • the PCF is configured to, in response to the user policy control establishment request from the AMF, request the UE's subscribed URSP information from the UDM/UDR; receive the URSP information fed back by the UDM/UDR and feed the URSP information back to the AMF to trigger the AMF to perform the operation of sending an extended policy control instruction to the UE;
  • the segmented path control system further includes at least one of the UDM or UDR, configured to perform the segmented path control method performed by the UDM/UDR as described above.
  • the system further includes an AF configured to perform the segmented path control method performed by the AF above, wherein the PCF is configured to send SRv6 forwarding path indication information to the AMF via a UE policy control update request to trigger the AMF to perform the operation of sending an extended policy control instruction to the UE.
  • a computer program is proposed for causing a processor to execute any of the segmented path control methods described above.
  • Figure 1 is a flowchart of some embodiments of the segmented path control method of this disclosure.
  • Figure 2A is a flowchart of some other embodiments of the segmented path control method of this disclosure.
  • Figure 2B is a signaling flowchart of some other embodiments of the segmented path control method of this disclosure.
  • Figure 3A is a flowchart of some further embodiments of the segmented path control method of this disclosure.
  • Figure 3B is a signaling flowchart of some further embodiments of the segmented path control method of this disclosure.
  • Figure 4A is a schematic diagram of some embodiments of the segmented path control device of this disclosure.
  • Figure 4B is a schematic diagram of some other embodiments of the segmented path control device of this disclosure.
  • Figure 4C is a schematic diagram of some further embodiments of the segmented path control device of this disclosure.
  • Figure 5 is a schematic diagram of some embodiments of the network device disclosed herein.
  • Figure 6 is a schematic diagram of some other embodiments of the network device disclosed herein.
  • Figure 7 is a schematic diagram of some embodiments of the segmented path control system of this disclosure.
  • Figure 8 is a network architecture diagram of some embodiments of the segmented path control system of this disclosure.
  • Figure 9 is a schematic diagram of the user plane protocol stack of some embodiments of the segmented path control system of this disclosure.
  • URSP describes the mapping between mobile applications and network slices.
  • the terminal selects a network route for the app based on URSP rules.
  • 5GC introduces network slicing, enabling different service data to run on different logical networks, allowing for flexible allocation of network resources to meet diverse service needs.
  • the network transmits relevant information through URSP in the end-to-end protocol. This information may include the following:
  • ANDSP Access Network Discovery & Selection Policy: Used when the terminal selects a non-3GPP access network.
  • the terminal uses this strategy to determine the routing direction of traffic output. Traffic can be routed to an established PDU (Protocol Data Unit) session, or it can access the network using non-3GPP technologies outside of a PDU session, or it can trigger the establishment of a new PDU session.
  • PDU Protocol Data Unit
  • URSP rules consist of a Traffic Descriptor that specifies matching criteria and one or more of the following components:
  • SSC-MSP SSC Mode Selection Policy: The terminal uses this policy to associate the matching application SSC (Session and Service Continuity) mode.
  • NSSP Network Slice Selection Policy
  • DNN Data Network Name selection strategy: The terminal uses this strategy to match the application with the DNN;
  • PDU Session Type Policy The terminal uses this policy to associate the matched application with the PDU session type
  • Non-seamless offloading policy The UE uses this policy to determine that the matching application should be non-seamlessly offloaded to non-3GPP access (i.e., outside of the PDU session);
  • Access type priority If the terminal needs to establish a PDU session for a matching application, the access type (3GPP or non-3GPP) is preferred.
  • the inventors discovered that if the selection of uplink segments in the forwarding plane is arranged and handled by the UE itself, it is not coordinated with the network path, which can easily lead to address conflicts and has management security flaws.
  • this disclosure proposes a segmented path control method, device, system, storage medium, and program product.
  • the network is responsible for managing or suggesting the routing segment list for the UE user terminal. This list is then sent to the UE via URSP cell expansion and corresponding procedures, allowing the UE to process and select the appropriate path. This achieves collaborative allocation of network paths, avoids address conflicts, and improves the reliability and security of communication using SRv6 as the mobile communication terminal user protocol.
  • the UE in this disclosure may include a user terminal.
  • step S11 the UE receives an extended policy control instruction from the AMF, which includes SRv6 forwarding path indication information.
  • the SRv6 forwarding path indication information includes one or more routing entries.
  • the SRv6 forwarding path indication information includes an uplink SRv6 segment indication list, which the UE uses to determine the uplink data transmission path.
  • At least one route entry in the uplink SRv6 segment path indication list includes the number of nodes traversed by the path and information about those nodes. In some embodiments, the uplink SRv6 segment path indication list includes at least one route entry. In some embodiments, multiple route entries are carried through a single extended policy control instruction to improve the flexibility of the terminal in determining the uplink transmission path.
  • At least one route entry in the uplink SRv6 segment path indication list also includes a route priority to improve the network side's control over terminal path selection and help improve uplink transmission performance.
  • the extended policy control instructions may include the information in Table 1, and the policy control instructions in the related art add the SRv6 segment list parameter.
  • the "SRv6 segment list” parameter is the SRv6 forwarding path indication information. In some embodiments, it can be an uplink SRv6 segment path indication list. In some embodiments, the cell format of the SRv6 segment list can be as shown in Table 2.
  • the information element information of an SRv6 segment list can be as follows.
  • step S12 the UE performs uplink segment routing based on the SRv6 forwarding path indication information.
  • the network is responsible for managing or suggesting the routing segment list for the UE user terminal and sending it to the UE for processing and selection. This enables the coordinated allocation of network paths, avoids address conflicts, and improves the communication reliability and security of using SRv6 as the mobile communication terminal user protocol.
  • a policy control command carrying SRv6 forwarding path indication information can be triggered from the network side to enable the rapid deployment of SRv6 forwarding path indication information in the UE.
  • the source of the feedback information can be expanded based on the URSP-related message delivery process during UE registration (e.g., the process in standard 3GPP TS23.502). The relevant information can then be forwarded to the UE for execution through the URSP message delivery process, thereby improving compatibility, reducing the signaling burden on the UE and network-side equipment, and facilitating widespread application.
  • the AF can also proactively influence the UE's SRv6 path selection.
  • the core network control plane equipment Through the core network control plane equipment, it sends SRv6 forwarding path indication information to the UE.
  • the UE Upon receiving the SRv6 forwarding path indication information, the UE can respond, allowing the network side to terminate the relevant configuration process. This method improves the matching degree between the SRv6 path and the application, thereby enhancing service performance.
  • FIG. 2A Flowcharts of some other embodiments of the segmented path control method disclosed herein are shown in Figure 2A.
  • the method is executed by a UDM, or a UDR, or by a combined UDM and UDR device.
  • a UE subscription information request is obtained from the PCF.
  • the UE subscription information request is carried by a DM subscribe request.
  • step S22 the UE's subscribed URSP information is fed back to the PCF.
  • This URSP information includes an extended field that carries SRv6 forwarding path indication information.
  • the PCF when the PCF receives the URSP information, it establishes a response through extended policy control, feeds back the URSP information to the AMF, and the AMF sends an extended policy control instruction carrying SRv6 forwarding path indication information to the UE.
  • the signaling flow is shown in Figure 2B.
  • the UE initiates a network registration process.
  • the UE initiates the network registration process by sending a Registration Request to the AMF.
  • the AMF requests the UE's policy from the PCF.
  • the AMF requests the UE's policy by sending a UE Policy Control_Create Request to the PCF.
  • the PCF requests the UE's subscription information from the UDR/UDM.
  • UDR/UDM refers to a UDR or UDM, or a combined UDR and UDM device.
  • the PCF requests the UE's subscription information by sending a DM Subscribe Request to the UDR/UDM.
  • the UDR/UDM queries its own storage and sends the UE's subscription information, as shown in Tables 1 and 2.
  • the URSP message contains SRv6-related routing information.
  • the UDR/UDM sends a subscription response (DM Subscribe Response) to the PCF to provide feedback on the UE's subscription information.
  • DM Subscribe Response subscription response
  • the PCF returns a URSP message containing SRv6 routes to the AMF.
  • the PCF requests the UE's subscription information by sending a UE Policy Control_Create Response to the AMF.
  • the AMF forwards the URSP message containing the SRv6 route to the UE for execution.
  • the AMF provides feedback on extended policy control instructions by sending a UE Policy Command to the UE.
  • the UDR/UDM stores SRv6 forwarding path indication information generated by the network side. Upon receiving a request from the PCF, it forwards the information to the UE, facilitating the UE to forward data according to the SRv6 forwarding path indication information generated by the network side. Since the network side has the ability to generate routing information based on global network information, it can achieve coordinated allocation of network paths, avoid address conflicts, and improve the communication reliability and security of using SRv6 as the mobile communication terminal user protocol.
  • FIG. 3A Flowcharts of some further embodiments of the segmented path control method disclosed herein are shown in Figure 3A. This method is executed by the AF (Automatic Path Controller).
  • step S31 a requirement to update the SRv6 route for the UE is generated.
  • the requirement to generate the SRv6 route for the UE can be determined upon receiving a request from a third party (such as SDN (Software Defined Network)) and step S32 can be triggered.
  • step S32 in response to the request to update the UE's SRv6 routing, service parameter update information is sent, including SRv6 forwarding path indication information.
  • the AF can send the update information to the core network's control plane equipment, for example, by sending the update information directly or indirectly to the PCF.
  • the PCF sends the SRv6 forwarding path indication information to the AMF through the UE policy control update request, and the AMF sends an extended policy control command carrying the SRv6 forwarding path indication information to the UE.
  • the signaling flow can be as shown in Figure 3B.
  • the AF receives a request from an external third party, such as SDN, to request an update to the SRv6 route for the corresponding user service, and sends the SRv6 forwarding path indication information to the NEF through a Service Parameter Update message.
  • an external third party such as SDN
  • the NEF Network Exposure Function forwards the received information to the PCF.
  • the NEF sends SRv6 forwarding path indication information to the PCF via an Update the information message. Utilizing the NEF's functionality can facilitate rapid application deployment.
  • the PCF forwards the received information to the AMF.
  • the PCF sends SRv6 forwarding path indication information to the AMF via a UE Policy Control Update Request message.
  • the AMF updates the SRv6 routing message to the UE.
  • the AMF sends SRv6 forwarding path indication information to the UE via a UE policy command message.
  • step 305 the UE successfully received the message and returned a UE Policy Update Response.
  • AF can actively influence the UE's SRv6 path selection, improve the matching degree between SRv6 path and application, and improve service performance.
  • Figure 4A shows a schematic diagram of some embodiments of the segmented path control device 41 disclosed herein, which is deployed on a UE.
  • the forwarding rule receiving unit 412 can receive extended policy control instructions from the AMF, which include SRv6 forwarding path indication information.
  • the SRv6 forwarding path indication information includes an uplink SRv6 segment path indication list, so that the UE can use the uplink SRv6 segment path indication list to determine the uplink data transmission path.
  • At least one route entry in the uplink SRv6 segment path indication list includes the number of nodes traversed by the path and information about those nodes. In some embodiments, the uplink SRv6 segment path indication list includes at least one route entry. In some embodiments, multiple route entries are carried through a single extended policy control instruction to improve the flexibility of the terminal in determining the uplink transmission path.
  • At least one route entry in the uplink SRv6 segment path indication list also includes a route priority to improve the network side's control over terminal path selection and help improve uplink transmission performance.
  • the routing unit 413 can perform uplink segment routing based on the SRv6 forwarding path indication information.
  • the UE can receive management or suggestion lists of user terminal routing segments from the network, which are then sent to the UE for processing and selection. This enables collaborative allocation of network paths, avoids address conflicts, and improves the reliability and security of communication using SRv6 as the mobile communication terminal user protocol.
  • the segmented path control device 41 further includes a request sending unit 411, which can send a registration request to the AMF.
  • the AMF sends a user policy control establishment request to the PCF according to the registration request.
  • the PCF requests the UE's subscribed URSP information from the UDM/UDR.
  • the UDM/UDR feeds back the URSP information, which includes SRv6 forwarding path indication information.
  • the PCF feeds back the URSP information to the AMF through the extended policy control establishment response to trigger the AMF to perform the operation of sending an extended policy control instruction to the UE.
  • Such equipment enables the rapid deployment of SRv6 forwarding path indication information generated on the network side to the UE, improving compatibility, reducing the signaling burden on the UE and network side equipment, and facilitating its widespread application.
  • the segmented path control device 41 further includes an instruction response unit 414, which can send a UE policy update response to the AMF after receiving an extended policy control instruction from the AMF.
  • the PCF responds to the service parameter update information from the AF and sends SRv6 forwarding path indication information to the AMF through a UE policy control update request to trigger the AMF to perform the operation of sending an extended policy control instruction to the UE.
  • Such devices can improve the matching degree between SRv6 paths and applications, thereby improving service performance.
  • FIG4B Schematic diagrams of other embodiments of the segmented path control device 42 disclosed herein are shown in FIG4B, which is deployed in UDM/UDR.
  • the request acquisition unit 421 can acquire the UE subscription information request from the PCF.
  • the UE subscription information request is carried by a DM subscribe request.
  • the policy feedback unit 422 is configured to feed back the URSP information subscribed by the UE to the PCF.
  • the URSP information includes SRv6 forwarding path indication information.
  • the PCF feeds back the URSP information to the AMF through the extended policy control establishment response.
  • the AMF sends an extended policy control command carrying the SRv6 forwarding path indication information to the UE.
  • Such a device enables the UDR/UDM to store SRv6 forwarding path indication information generated by the network side. Upon receiving a request from the PCF, it forwards the information to the UE, facilitating the UE to forward data based on the SRv6 forwarding path indication information generated by the network side. Since the network side has the ability to generate routing information based on global network information, it can achieve coordinated allocation of network paths, avoid address conflicts, and improve the reliability and security of communication using SRv6 as the mobile communication terminal user protocol.
  • FIG4C A schematic diagram of some further embodiments of the segmented path control device 43 disclosed herein is shown in FIG4C, which is deployed in AF.
  • the update request unit 431 can respond to the need to update the SRv6 route of the UE by sending service parameter update information, which includes SRv6 forwarding path indication information.
  • service parameter update information which includes SRv6 forwarding path indication information.
  • the PCF After receiving the update information, the PCF sends the SRv6 forwarding path indication information to the AMF through the UE policy control update request.
  • the AMF then sends an extended policy control command carrying the SRv6 forwarding path indication information to the UE.
  • Such equipment enables the AF to proactively influence the UE's SRv6 path selection, improve the matching degree between the SRv6 path and the application, and enhance service performance.
  • the segmented path control device includes a memory 501 and a processor 502.
  • the memory 501 can be a disk, flash memory, or any other non-volatile storage medium.
  • the memory is used to store instructions in the corresponding embodiments of the segmented path control method described above.
  • the processor 502 is coupled to the memory 501 and can be implemented as one or more integrated circuits, such as a microprocessor or microcontroller.
  • the processor 502 is used to execute the instructions stored in the memory, which can improve the communication reliability and security when using SRv6 as the mobile communication terminal user protocol.
  • the segmented path control device 600 may include a memory 601 and a processor 602.
  • the processor 602 is coupled to the memory 601 via a BUS bus 603.
  • the segmented path control device 600 may also be connected to an external storage device 605 via a storage interface 604 to access external data, and may also be connected to a network or another computer system (not shown) via a network interface 606. Further details are omitted here.
  • a computer-readable storage medium stores computer program instructions that, when executed by a processor, implement the steps of the method in the corresponding embodiment of the segmented path control method.
  • UE 71 can execute any of the segmented path control methods described above.
  • AMF 74 can send extended policy control instructions to the UE, which include SRv6 forwarding path indication information.
  • the network is responsible for managing or suggesting the routing segment list for the UE user terminal and sending it to the UE for processing and selection. This enables the coordinated allocation of network paths, avoids address conflicts, and improves the communication reliability and security of using SRv6 as the mobile communication terminal user protocol.
  • the segmented path control system further includes a PCF 75, which can send SRv6 forwarding path indication information to the AMF to trigger the AMF to perform the operation of sending extended policy control commands to the UE.
  • a PCF 75 which can send SRv6 forwarding path indication information to the AMF to trigger the AMF to perform the operation of sending extended policy control commands to the UE.
  • the transmission of SRv6 forwarding path indication information can be triggered by the communication process in related technologies, reducing signaling burden and improving implementation efficiency.
  • AMF 74 can also receive a registration request from the UE and send a user policy control establishment request to PCF.
  • PCF 75 in response to the user policy control establishment request from AMF, requests URSP information for the UE's subscription from UDM/UDR; after receiving the URSP information from UDM/UDR, it feeds the URSP information back to AMF to trigger AMF to send extended policy control instructions to the UE.
  • the segmented path control system also includes UDM/UDR 72, which can execute the segmented path control method executed by UDM/UDR as described above.
  • the source of the feedback information is expanded, and the relevant information is forwarded to the UE for execution through the URSP message transmission process, thereby improving compatibility, reducing the signaling burden on the UE and network-side equipment, and facilitating widespread application.
  • the segmented path control system further includes AF 73.
  • AF 73 can execute the segmented path control method executed by AF as described above.
  • PCF 75 can obtain update information provided by AF, and send SRv6 forwarding path indication information to AMF through UE policy control update request, so as to trigger AMF to perform the operation of sending extended policy control instructions to UE.
  • the matching degree between SRv6 paths and applications can be improved, thereby enhancing service performance.
  • the network architecture diagram of some embodiments of the segmented path control system disclosed herein is shown in Figure 8. This network architecture does not change the connection structure in related technologies. Through functional enhancements of the network-side AF, UDR/UDM, PCF, and AMF, it enables the generation and distribution of user SRv6 paths, thereby achieving the goal of implementing SRv6 in the mobile network.
  • a schematic diagram of the user plane protocol stack of some embodiments of the segmented path control system disclosed herein is shown in Figure 9, where the shaded portions represent extensions and updates to related protocols.
  • the PDU messages at the user application layer support the SRv6 protocol.
  • SRv6 uses segment IDs to indicate network paths, fully utilizing the powerful header extension capabilities of IPv6 to directly identify the route of data packets in the packet header.
  • the SRv6 protocol has been widely deployed in bearer networks, facilitating faster path selection for users using SRv6 to carry applications.
  • These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and/or one or more block diagrams.
  • These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and/or one or more block diagrams.
  • the methods and apparatus of this disclosure may be implemented in many ways. For example, they may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware.
  • the above-described order of steps for the methods is for illustrative purposes only, and the steps of the methods of this disclosure are not limited to the order specifically described above unless otherwise specifically stated.
  • this disclosure may also be implemented as a program recorded on a recording medium, the program including machine-readable instructions for implementing the methods according to this disclosure.
  • this disclosure also covers recording media storing programs for performing the methods according to this disclosure.

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Abstract

本公开提出一种分段路径控制方法、设备、系统和存储介质及程序产品，涉及通信技术领域。本公开的一种分段路径控制方法，包括：用户设备UE接收来自接入和移动性管理功能AMF的扩展策略控制指令，扩展策略控制指令中包括SRv6转发路径指示信息；UE根据SRv6转发路径指示信息执行上行段路由选择。

Description

分段路径控制方法、设备、系统和存储介质及程序产品
相关申请的交叉引用
本申请是以CN申请号为202410557755.5，申请日为2024年5月7日的申请为基础，并主张其优先权，该CN申请的公开内容在此作为整体引入本申请中。
技术领域
本公开涉及通信技术领域，特别是一种分段路径控制方法、设备、系统和存储介质及程序产品。
背景技术
SRv6(Segment Routing over IPv6，基于IPv6转发平面的段路由)是新一代IP承载协议。采用现有的IPv6转发技术，通过灵活的IPv6扩展头，实现网络可编程。SRv6简化了网络协议类型，具有良好的扩展性和可编程性，可满足更多新业务的多样化需求，提供高可靠性，在云业务中有良好的应用前景。SC(Service Classifier，业务分类节点)位于SRV6 SFC(Service Function Chain，服务链)网络边缘，是服务链路径的源节点。SC可以采用不同的引流方式，将业务数据引入SRV6 TE Policy隧道中进行转发。
SRv6提供段路由，可编辑的路由管理模式，良好的可扩展性，可解决下一代移动网络中的路由编辑和管理问题。技术成熟，在承载网络上大量部署，引用到移动网络用户中，可实现移动网络层面的策略和移动层面的策略统一管理和落实，有助于端到端QoS(Quality of Service，服务质量)的管理和转发等能力的提升。
发明内容
本公开的一个目的在于提高使用SRv6作为移动通信终端用户协议的通信可靠度和安全性。
根据本公开的一些实施例的一个方面，提出一种分段路径控制方法，包括：UE(User Equipment，用户设备)接收来自AMF(Access and Mobility Management Function，接入和移动性管理功能)的扩展策略控制指令，扩展策略控制指令中包括SRv6转发路径指示信息；UE根据SRv6转发路径指示信息执行上行段路由选择。
在一些实施例中，SRv6转发路径指示信息包括上行SRv6段路径指示列表。
在一些实施例中，上行SRv6段路径指示列表中，至少一条路由条目中包括路径经过的节点数量和经过的节点的信息。
在一些实施例中，上行SRv6段路径指示列表中，至少一条路由条目中还包括路由优先级。
在一些实施例中，该方法还包括：UE向AMF发送注册请求，其中，AMF根据注册请求向PCF(Policy Control Function，策略控制功能)发送用户策略控制建立请求，PCF向UDM(Unified Data Management，统一数据管理)/UDR(Unified Data Repository，统一数据存储库)申请UE的签约的URSP(UE Route Selection Policy，用户设备路由选择策略)信息，UDM/UDR反馈URSP信息，URSP信息中包括SRv6转发路径指示信息，PCF通过扩展策略控制建立响应，将URSP信息反馈给AMF，以触发AMF执行向UE发送扩展策略控制指令的操作。
在一些实施例中，PCF响应于来自AF(Application Function，应用功能)的服务参数的更新信息，通过UE策略控制更新请求，将SRv6转发路径指示信息发送给AMF，以触发AMF执行向UE发送扩展策略控制指令的操作，其中，更新信息中包括SRv6转发路径指示信息。
在一些实施例中，该方法还包括：UE在收到来自AMF的扩展策略控制指令后，向AMF发送UE策略更新响应。
根据本公开的一些实施例的一个方面，提出一种分段路径控制方法，包括：获取来自PCF的UE签约信息请求；向PCF反馈UE签约的URSP信息，URSP信息中包括SRv6转发路径指示信息，其中，PCF通过扩展策略控制建立响应，将URSP信息反馈给AMF，AMF向UE发送携带SRv6转发路径指示信息的扩展策略控制指令。
根据本公开的一些实施例的一个方面，提出一种分段路径控制方法，包括：响应于更新UE的SRv6路由的需求，发送服务参数的更新信息，更新信息中包括SRv6转发路径指示信息，其中，PCF获取更新信息，通过UE策略控制更新请求，将SRv6转发路径指示信息发送给AMF，AMF向UE发送携带SRv6转发路径指示信息的扩展策略控制指令的操作。
根据本公开的一些实施例的一个方面，提出一种分段路径控制设备，包括：转发规则接收单元，被配置为接收来自AMF的扩展策略控制指令，扩展策略控制指令中包括SRv6转发路径指示信息；路由选择单元，被配置为根据SRv6转发路径指示信息执行上行段路由选择。
在一些实施例中，该设备还包括：请求发送单元，被配置为向AMF发送注册请求，其中，AMF根据注册请求向PCF发送用户策略控制建立请求，PCF向UDM/UDR申请UE的签约的URSP信息，UDM/UDR反馈URSP信息，URSP信息中包括SRv6转发路径指示信息，PCF通过扩展策略控制建立响应，将URSP信息反馈给AMF，以触发AMF执行向UE发送扩展策略控制指令的操作。
在一些实施例中，该设备还包括：指令响应单元，被配置为在收到来自AMF的扩展策略控制指令后，向AMF发送UE策略更新响应，其中，PCF响应于来自AF的服务参数的更新信息，通过UE策略控制更新请求，将SRv6转发路径指示信息发送给AMF，以触发AMF执行向UE发送扩展策略控制指令的操作，其中，更新信息中包括SRv6转发路径指示信息。
根据本公开的一些实施例的一个方面，提出一种分段路径控制设备，包括：请求获取单元，被配置为获取来自PCF的UE签约信息请求；策略反馈单元，被配置为向PCF反馈UE签约的URSP信息，URSP信息中包括SRv6转发路径指示信息，其中，PCF通过扩展策略控制建立响应，将URSP信息反馈给AMF，AMF向UE发送携带SRv6转发路径指示信息的扩展策略控制指令。
根据本公开的一些实施例的一个方面，提出一种分段路径控制设备，包括：更新请求单元，被配置为响应于更新UE的SRv6路由的需求，发送服务参数的更新信息，更新信息中包括SRv6转发路径指示信息，其中，PCF获取更新信息，通过UE策略控制更新请求，将SRv6转发路径指示信息发送给AMF，AMF向UE发送携带SRv6转发路径指示信息的扩展策略控制指令的操作。
根据本公开的一些实施例的一个方面，提出一种网络设备，包括：存储器；以及耦接至存储器的处理器，处理器被配置为基于存储在存储器的指令执行上文中提到的任意一种分段路径控制方法。
根据本公开的一些实施例的一个方面，提出一种非瞬时性计算机可读存储介质，其上存储有计算机程序指令，该指令被处理器执行时实现上文中任意一种分段路径控制方法。
根据本公开的一些实施例的一个方面，提出一种计算机程序产品，包括计算机程序或指令，计算机程序或指令被处理器执行时实现上文中任意一种分段路径控制方法。
根据本公开的一些实施例的一个方面，提出一种分段路径控制系统，包括：UE，被配置为执行上文中任意一种由UE执行的分段路径控制方法；和AMF，被配置为向UE发送扩展策略控制指令，扩展策略控制指令中包括SRv6转发路径指示信息。
在一些实施例中，该系统还包括：PCF，被配置为向AMF发送SRv6转发路径指示信息，以便触发AMF执行向UE发送扩展策略控制指令的操作。
在一些实施例中，AMF还被配置为，接收来自UE的注册请求，向PCF发送用户策略控制建立请求；PCF被配置为响应于来自AMF的用户策略控制建立请求，向UDM/UDR申请UE的签约的URSP信息；接收UDM/UDR反馈的URSP信息，将URSP信息反馈给AMF，以触发AMF执行向UE发送扩展策略控制指令的操作；分段路径控制系统还包括：UDM或UDR中的至少一种，被配置为执行上文中由UDM/UDR执行的分段路径控制方法。
在一些实施例中，该系统还包括：AF，被配置为执行上文中由AF执行的分段路径控制方法，其中，PCF被配置为通过UE策略控制更新请求，将SRv6转发路径指示信息发送给AMF，以触发AMF执行向UE发送扩展策略控制指令的操作。
根据本公开的一些实施例的一个方面，提出一种计算机程序，用于使处理器执行上文中任意一种分段路径控制方法。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本公开的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。
图1为本公开的分段路径控制方法的一些实施例的流程图。
图2A为本公开的分段路径控制方法的另一些实施例的流程图。
图2B为本公开的分段路径控制方法的另一些实施例的信令流程图。
图3A为本公开的分段路径控制方法的又一些实施例的流程图。
图3B为本公开的分段路径控制方法的又一些实施例的信令流程图。
图4A为本公开的分段路径控制设备的一些实施例的示意图。
图4B为本公开的分段路径控制设备的另一些实施例的示意图。
图4C为本公开的分段路径控制设备的又一些实施例的示意图。
图5为本公开的网络设备的一些实施例的示意图。
图6为本公开的网络设备的另一些实施例的示意图。
图7为本公开的分段路径控制系统的一些实施例的示意图。
图8为本公开的分段路径控制系统的一些实施例的网络架构图。
图9为本公开的分段路径控制系统的一些实施例的用户面协议栈示意图。
具体实施方式
下面通过附图和实施例，对本公开的技术方案做进一步的详细描述。
URSP描述了手机应用与网络切片之间的对应关系，终端根据URSP规则，为app选择网络路由。5GC引入网络切片，实现不同需求的业务数据跑在不同的逻辑网络上，实现网络资源面向不同业务需求的灵活调配。网络为了通知UE端应用与切片的对应关系，通过端到端协议中的URSP传递相关的信息。这些信息可包括如下内容。
1、ANDSP(Access Network Discovery&Selection Policy，接入网络发现选择策略)：终端选择非3gpp接入网络时使用。
2、用户路由选择策略：终端使用该策略决定流量输出方向的路由选择。流量可以路由到一个已建立的PDU(Protocol Data Unit，协议数据单元)会话，也可以使用PDU会话之外的non-3gpp技术进行接入，或者触发一个新的PDU会话的建立。
URSP规则包括一个指定匹配条件的流量描述符Traffic Descriptor和以下一个或多个组件:
SSC-MSP(SSC Mode Selection Policy，SSC模式选择策略)：终端使用该策略将匹配的应用SSC(Session and Service Continuity，会话和服务连续性)模式进行关联；
NSSP(Network Slice Selection Policy，网络切片选择策略)：终端使用该策略将匹配的应用与S-NSSAI进行关联；
DNN(Date Network Name，数据网络名称)选择策略：终端使用此策略将匹配应用程序与DNN关联；
PDU会话类型策略：终端通过该策略将匹配的应用与PDU会话类型关联；
非无缝卸载策略：UE使用该策略来确定匹配的应用程序应该非无缝地卸载到非3gpp访问(即在PDU会话之外)；
接入类型优先:如果终端需要为匹配的应用建立PDU会话，则首选接入类型(3GPP或非3GPP)。
发明人发现，转发面的上行段路由的选择，如果由UE自行安排和处理，存在与网络路径不协同，容易出现地址冲突，存在管理上的安全缺陷。
针对上述问题，本公开提出一种分段路径控制方法、设备、系统和存储介质及程序产品，由网络来负责UE用户端路由段列表的管理或者建议列表，通过URSP的信元扩充及对应的流程下发给UE，由UE来处理和选择，从而实现网络路径的协同分配，避免出现地址冲突，提高使用SRv6作为移动通信终端用户协议的通信可靠度和安全性。
本公开中的UE可以包括用户终端(Terminal)。
本公开的由UE执行的分段路径控制方法的一些实施例的流程图如图1所示。
在步骤S11中，UE接收来自AMF的扩展策略控制指令，扩展策略控制指令中包括SRv6转发路径指示信息。在一些实施例中，SRv6转发路径指示信息中包括一条或多条路由条目。
在一些实施例中，SRv6转发路径指示信息包括上行SRv6段路径指示列表(SRv6segment list)，以便UE使用该上行SRv6段路径指示列表确定上行数据传输路径。
在一些实施例中，上行SRv6段路径指示列表中，至少一条路由条目中包括路径经过的节点数量和经过的节点的信息。在一些实施例中，上行SRv6段路径指示列表中包括至少一条路由条目。在一些实施例中，通过一条扩展策略控制指令，携带多条路由条目，以便提高终端确定上行传输路径的灵活度。
在一些实施例中，上行SRv6段路径指示列表中，至少一条路由条目中还包括路由优先级，以提高网络侧对终端路径选择的控制能力，有助于提高上行传输性能。
在一些实施例中，扩展策略控制指令中可以包括表1中的信息，在相关技术中的策略控制指令增加SRv6 segment list参数。
表1携带SRv6转发路径指示信息的扩展策略控制指令

在表1中，“SRv6 segment list”参数即为SRv6转发路径指示信息，在一些实施例中，可以为上行SRv6段路径指示列表。在一些实施例中，SRv6 segment list的信元格式可以如表2中所示。
表2 SRv6 segment list的信元格式
举个例子，SRv6 segment list的信元信息可以如下所示。
路由优先级＝1
中间节点数SL＝n
段列表(Segments List):
(Segments List[0]＝SID[0],
Segments List[1]＝SID[1],
…，
Segments List[n]＝SID[n])
上述例子中的数据、顺序、路由条目数量等仅为示例，不构成对本公开的不当限制。
通过对URSP标准流程中的信元进行扩充，携带SRv6相关的信息，提高了兼容性，降低UE和网络侧设备的信令负担，有利于推广应用。
在步骤S12中，UE根据SRv6转发路径指示信息执行上行段路由选择。
基于上文所示实施例中的方法，由网络来负责UE用户端路由段列表的管理或者建议列表，下发给UE，由UE来处理和选择，从而实现网络路径的协同分配，避免出现地址冲突，提高使用SRv6作为移动通信终端用户协议的通信可靠度和安全性。
在一些实施例中，可以在UE向AMF发起注册的流程中，触发网络侧反馈携带SRv6转发路径指示信息的策略控制指令，以便实现SRv6转发路径指示信息在UE的尽快部署。在一些实施例中，可以基于UE注册过程中的URSP相关消息的下发流程(例如标准3GPP TS23.502中的流程)，对反馈信息的信源进行扩充，通过URSP消息传递的流程将相关信息转发给UE执行，从而提高了兼容性，降低UE和网络侧设备的信令负担，有利于推广应用。
在一些实施例中，AF也可以主动影响UE的SRv6路径选择，通过核心网控制面设备，向UE发送AF提供SRv6转发路径指示信息，UE可以在收到SRv6转发路径指示信息后反馈响应，以便网络侧结束相关配置流程。通过这样的方法，能够提高SRv6路径与应用的匹配度，提高服务性能。
本公开的分段路径控制方法的另一些实施例的流程图如图2A所示，该方法由UDM执行，或UDR执行，或由UDM与UDR的合设设备执行。
在步骤S21中，获取来自PCF的UE签约信息请求。在一些实施例中，UE签约信息请求由DM subscribe Request承载。
在步骤S22中，向PCF反馈UE签约的URSP信息。该URSP信息包括扩展字段，携带SRv6转发路径指示信息。
在一些实施例中，当PCF收到URSP信息后，通过扩展策略控制建立响应，将URSP信息反馈给AMF，AMF向UE发送携带SRv6转发路径指示信息的扩展策略控制指令。
在一些实施例中，信令流程如图2B中所示。
在201中，UE发起网络注册流程。在一些实施例中，UE通过向AMF发送注册请求Registration Request，发起网络注册流程。
在202中，AMF向PCF申请UE的策略。在一些实施例中，AMF通过向PCF发送UE策略控制建立请求(UE Policy Control_Create Request)申请UE的策略。
在203中，PCF向UDR/UDM申请UE的签约信息。UDR/UDM指UDR或UDM，或UDR与UDM的合设设备。在一些实施例中，PCF通过向UDR/UDM发送订阅请求(DM Subscribe Request)申请UE的签约信息。
在204中，UDR/UDM查询自身存储，下发UE的签约信息，如表1、2中所示，URSP消息包含SRv6相关路由信息。在一些实施例中，UDR/UDM通过向PCF发送订阅响应(DM Subscribe Response)反馈UE的签约信息。
在205中，PCF将包含SRv6路由的URSP消息返回给AMF。在一些实施例中，PCF通过向AMF发送UE策略控制建立响应(UE Policy Control_Create Response)申请UE的签约信息。
在206中，AMF将包含SRv6路由的URSP消息转发给UE执行。在一些实施例中，AMF通过向UE发送UE策略指令(UE Policy Command)反馈扩展策略控制指令。
基于上文所示实施例中的方法，UDR/UDM中存储有网络侧生成的SRv6转发路径指示信息，在收到PCF的请求的情况下，转发给UE，便于UE根据网络侧生成的SRv6转发路径指示信息进行数据转发，由于网络侧具备基于网络全局信息生成路由信息的能力，从而实现网络路径的协同分配，避免出现地址冲突，提高使用SRv6作为移动通信终端用户协议的通信可靠度和安全性。
本公开的分段路径控制方法的又一些实施例的流程图如图3A所示。该方法由AF执行。
在步骤S31中，产生更新UE的SRv6路由的需求。在一些实施例中，可以在收到(如SDN(Software Defined Network，软件定义网络)等)第三方请求的情况下，确定产生更新UE的SRv6路由的需求，触发执行步骤S32。
在步骤S32中，响应于更新UE的SRv6路由的需求，发送服务参数的更新信息，更新信息中包括SRv6转发路径指示信息。在一些实施例中，AF可以向核心网的控制面设备发送更新信息，例如，将更新信息直接或间接的发送给PCF。PCF通过UE策略控制更新请求，将SRv6转发路径指示信息发送给AMF，AMF向UE发送携带SRv6转发路径指示信息的扩展策略控制指令的操作。
在一些实施例中，以更新信息通过NEF转发给PCF为例，信令流程可以如图3B中所示。
在301中，AF接收到外界如SDN等相关的第三方请求，申请更新对应用户业务的SRv6路由，将SRv6转发路径指示信息通过服务参数更新(Service Parameter Update)消息发送给NEF。
在302中，NEF(Network Exposure Function，网络开放功能)将接收到的信息转发给PCF。在一些实施例中，NEF通过更新信息(Update the information)消息，将SRv6转发路径指示信息下发给PCF。利用NEF的功能能够有利于快速部署应用。
在303中，PCF将接收到的信息转发给AMF。在一些实施例中，PCF通过UE策略控制更新请求(UE Policy Control Update Request)消息，将SRv6转发路径指示信息下发给AMF。
在304中，AMF将SRv6路由消息更新给UE。在一些实施例中，AMF通过UE策略指令(UE policy command)消息，将SRv6转发路径指示信息下发给UE。
在305中，UE接收成功，返回UE策略更新响应(UE Policy Update Response)。
基于上文所示实施例中的方法，AF可以主动影响UE的SRv6路径选择，提高SRv6路径与应用的匹配度，提高服务性能。
本公开的分段路径控制设备41的一些实施例的示意图如图4A所示，该分段路径控制设备41部署在UE。
转发规则接收单元412能够接收来自AMF的扩展策略控制指令，扩展策略控制指令中包括SRv6转发路径指示信息。
在一些实施例中，SRv6转发路径指示信息包括上行SRv6段路径指示列表，以便UE使用该上行SRv6段路径指示列表确定上行数据传输路径。
在一些实施例中，上行SRv6段路径指示列表中，至少一条路由条目中包括路径经过的节点数量和经过的节点的信息。在一些实施例中，上行SRv6段路径指示列表中包括至少一条路由条目。在一些实施例中，通过一条扩展策略控制指令，携带多条路由条路，以便提高终端确定上行传输路径的灵活度。
在一些实施例中，上行SRv6段路径指示列表中，至少一条路由条目中还包括路由优先级，以提高网络侧对终端路径选择的控制能力，有助于提高上行传输性能。
路由选择单元413能够根据SRv6转发路径指示信息执行上行段路由选择。
基于本公开实施例中的设备，UE能够由网络来提供用户端路由段列表的管理或者建议列表，下发给UE进行处理和选择，从而实现网络路径的协同分配，避免出现地址冲突，提高使用SRv6作为移动通信终端用户协议的通信可靠度和安全性。
在一些实施例中，如图4A所示，分段路径控制设备41还包括请求发送单元411，能够向AMF发送注册请求，其中，AMF根据注册请求向PCF发送用户策略控制建立请求，PCF向UDM/UDR申请UE的签约的URSP信息，UDM/UDR反馈URSP信息，URSP信息中包括SRv6转发路径指示信息，PCF通过扩展策略控制建立响应，将URSP信息反馈给AMF，以触发AMF执行向UE发送扩展策略控制指令的操作。
这样的设备能够实现网络侧生成的SRv6转发路径指示信息在UE的尽快部署，提高了兼容性，降低UE和网络侧设备的信令负担，有利于推广应用。
在一些实施例中，如图4A所示，分段路径控制设备41还包括指令响应单元414，能够在收到来自AMF的扩展策略控制指令后，向AMF发送UE策略更新响应，其中，PCF响应于来自AF的服务参数的更新信息，通过UE策略控制更新请求，将SRv6转发路径指示信息发送给AMF，以触发AMF执行向UE发送扩展策略控制指令的操作。
这样的设备能够提高SRv6路径与应用的匹配度，提高服务性能。
本公开的分段路径控制设备42的另一些实施例的示意图如图4B所示，该分段路径控制设备41部署在UDM/UDR。
请求获取单元421能够获取来自PCF的UE签约信息请求。在一些实施例中，UE签约信息请求由DM subscribe Request承载。
策略反馈单元422，被配置为向PCF反馈UE签约的URSP信息，URSP信息中包括SRv6转发路径指示信息，其中，PCF通过扩展策略控制建立响应，将URSP信息反馈给AMF，AMF向UE发送携带SRv6转发路径指示信息的扩展策略控制指令。
这样的设备能够使UDR/UDM中存储网络侧生成的SRv6转发路径指示信息，在收到PCF的请求的情况下，转发给UE，便于UE根据网络侧生成的SRv6转发路径指示信息进行数据转发，由于网络侧具备基于网络全局信息生成路由信息的能力，从而实现网络路径的协同分配，避免出现地址冲突，提高使用SRv6作为移动通信终端用户协议的通信可靠度和安全性。
本公开的分段路径控制设备43的又一些实施例的示意图如图4C所示，该分段路径控制设备43部署在AF。
更新请求单元431能够响应于更新UE的SRv6路由的需求，发送服务参数的更新信息，更新信息中包括SRv6转发路径指示信息，其中，PCF在收到更新信息后，通过UE策略控制更新请求，将SRv6转发路径指示信息发送给AMF，AMF向UE发送携带SRv6转发路径指示信息的扩展策略控制指令的操作。
这样的设备能够使AF主动影响UE的SRv6路径选择，提高SRv6路径与应用的匹配度，提高服务性能。
本公开分段路径控制设备的一个实施例的结构示意图如图5所示。分段路径控制设备包括存储器501和处理器502。其中：存储器501可以是磁盘、闪存或其它任何非易失性存储介质。存储器用于存储上文中分段路径控制方法的对应实施例中的指令。处理器502耦接至存储器501，可以作为一个或多个集成电路来实施，例如微处理器或微控制器。该处理器502用于执行存储器中存储的指令，能够提高使用SRv6作为移动通信终端用户协议的通信可靠度和安全性。
在一个实施例中，还可以如图6所示，分段路径控制设备600包括存储器601和处理器602。处理器602通过BUS总线603耦合至存储器601。该分段路径控制设备600还可以通过存储接口604连接至外部存储装置605以便调用外部数据，还可以通过网络接口606连接至网络或者另外一台计算机系统(未标出)。此处不再进行详细介绍。
在该实施例中，通过存储器存储数据指令，再通过处理器处理上述指令，能够提高使用SRv6作为移动通信终端用户协议的通信可靠度和安全性。
在另一个实施例中，一种计算机可读存储介质，其上存储有计算机程序指令，该指令被处理器执行时实现分段路径控制方法对应实施例中的方法的步骤。本领域内的技术人员应明白，本公开的实施例可提供为方法、装置、或计算机程序产品。因此，本公开可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开可采用在一个或多个其中包含有计算机可用程序代码的计算机可用非瞬时性存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本公开的分段路径控制系统的一些实施例的示意图如图7所示。
UE 71能够执行上文中任意一种由UE执行的分段路径控制方法。
AMF 74能够向UE发送扩展策略控制指令，扩展策略控制指令中包括SRv6转发路径指示信息。
基于上述实施例中的分段路径控制系统，由网络来负责UE用户端路由段列表的管理或者建议列表，下发给UE，由UE来处理和选择，从而实现网络路径的协同分配，避免出现地址冲突，提高使用SRv6作为移动通信终端用户协议的通信可靠度和安全性。
在一些实施例中，如图7所示，分段路径控制系统还包括PCF 75，能够向AMF发送SRv6转发路径指示信息，以便触发AMF执行向UE发送扩展策略控制指令的操作。基于上述实施例中的分段路径控制系统，能够利用相关技术中的通信过程触发SRv6转发路径指示信息的下发，降低信令负担，提高实现效率。
在一些实施例中，AMF 74还能够接收来自UE的注册请求，向PCF发送用户策略控制建立请求。PCF 75响应于来自AMF的用户策略控制建立请求，向UDM/UDR申请UE的签约的URSP信息；在接收UDM/UDR反馈的URSP信息后，将URSP信息反馈给AMF，以触发AMF执行向UE发送扩展策略控制指令的操作。如图7所示，分段路径控制系统还包括UDM/UDR 72，能够执行上文中由UDM/UDR执行的分段路径控制方法。基于UE注册过程中的URSP相关消息的下发流程(例如标准3GPP TS23.502中的流程)，对反馈信息的信源进行扩充，通过URSP消息传递的流程将相关信息转发给UE执行，从而提高了兼容性，降低UE和网络侧设备的信令负担，有利于推广应用。
在一些实施例中，如图7所示，分段路径控制系统还包括AF 73。
AF 73能够执行上文中由AF执行的分段路径控制方法。
PCF 75能够获取由AF提供的更新信息，通过UE策略控制更新请求，将SRv6转发路径指示信息发送给AMF，以触发AMF执行向UE发送扩展策略控制指令的操作。
基于上述实施例中的分段路径控制系统，能够提高SRv6路径与应用的匹配度，提高服务性能。
在一些实施例中，本公开的分段路径控制系统的一些实施例的网络架构图如图8所示。该网络架构未改变相关技术中的连接结构，通过网络侧AF、UDR/UDM、PCF、AMF的功能增强，实现用户的SRv6路径的生成和下发，从而达到在移动网络中实现SRv6的目的。
在一些实施例中，本公开的分段路径控制系统的一些实施例的用户面协议栈示意图如图9所示，其中，斜线底纹的部分为对相关协议的扩展更新。用户应用层面的PDU报文支持SRv6协议。SRv6使用segment ID来指示网络路径，充分利用了IPv6强大的包头扩展能力，直接在数据包头中标识数据包的路由。并且SRv6协议在承载网中已经大量部署，用户使用SRv6协议承载应用，便于在承载网络上更迅速的路径选择。
本公开是参照根据本公开实施例的方法、设备(系统)和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
至此，已经详细描述了本公开。为了避免遮蔽本公开的构思，没有描述本领域所公知的一些细节。本领域技术人员根据上面的描述，完全可以明白如何实施这里公开的技术方案。
可能以许多方式来实现本公开的方法以及装置。例如，可通过软件、硬件、固件或者软件、硬件、固件的任何组合来实现本公开的方法以及装置。用于所述方法的步骤的上述顺序仅是为了进行说明，本公开的方法的步骤不限于以上具体描述的顺序，除非以其它方式特别说明。此外，在一些实施例中，还可将本公开实施为记录在记录介质中的程序，这些程序包括用于实现根据本公开的方法的机器可读指令。因而，本公开还覆盖存储用于执行根据本公开的方法的程序的记录介质。
需要说明的是，本公开的说明书和权利要求书及附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本公开的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
最后应当说明的是：以上实施例仅用以说明本公开的技术方案而非对其限制；尽管参照较佳实施例对本公开进行了详细的说明，所属领域的普通技术人员应当理解：依然可以对本公开的具体实施方式进行修改或者对部分技术特征进行等同替换；而不脱离本公开技术方案的精神，其均应涵盖在本公开请求保护的技术方案范围当中。

Claims (22)

  1. 一种分段路径控制方法，由用户设备UE执行，包括：
    接收来自接入和移动性管理功能AMF的扩展策略控制指令，所述扩展策略控制指令中包括SRv6转发路径指示信息；
    根据所述SRv6转发路径指示信息执行上行段路由选择。
  2. 根据权利要求1所述的分段路径控制方法，其中，所述SRv6转发路径指示信息包括上行SRv6段路径指示列表。
  3. 根据权利要求2所述的分段路径控制方法，其中，所述上行SRv6段路径指示列表中，至少一条路由条目中包括路径经过的节点数量和经过的节点的信息。
  4. 根据权利要求3所述的分段路径控制方法，其中，所述上行SRv6段路径指示列表中，至少一条路由条目中还包括路由优先级。
  5. 根据权利要求1-4中任意一项所述的分段路径控制方法，还包括：
    向AMF发送注册请求，其中，
    所述AMF根据所述注册请求向策略控制功能PCF发送用户策略控制建立请求，
    所述PCF向统一数据管理UDM/统一数据存储库UDR申请所述UE的签约的用户设备路由选择策略URSP信息，
    所述UDM/UDR反馈所述URSP信息，所述URSP信息中包括所述SRv6转发路径指示信息，
    所述PCF通过扩展策略控制建立响应，将所述URSP信息反馈给所述AMF，以触发所述AMF执行向所述UE发送所述扩展策略控制指令的操作。
  6. 根据权利要求1-5中任意一项所述的分段路径控制方法，其中，
    PCF响应于来自应用功能AF的服务参数的更新信息，通过UE策略控制更新请求，将所述SRv6转发路径指示信息发送给所述AMF，以触发所述AMF执行向所述UE发送所述扩展策略控制指令的操作，其中，所述更新信息中包括SRv6转发路径指示信息。
  7. 根据权利要求6所述的分段路径控制方法，还包括：在收到来自AMF的扩展策略控制指令后，向所述AMF发送UE策略更新响应。
  8. 一种分段路径控制方法，包括：
    获取来自策略控制功能PCF的用户设备UE签约信息请求；
    向所述PCF反馈UE签约的用户设备路由选择策略URSP信息，所述URSP信息中包括SRv6转发路径指示信息，其中，所述PCF通过扩展策略控制建立响应，将所述URSP信息反馈给接入和移动性管理功能AMF，所述AMF向所述UE发送携带所述SRv6转发路径指示信息的扩展策略控制指令。
  9. 一种分段路径控制方法，包括：
    响应于更新用户设备UE的SRv6路由的需求，发送服务参数的更新信息，所述更新信息中包括SRv6转发路径指示信息，
    其中，策略控制功能PCF获取所述更新信息，通过UE策略控制更新请求，将所述SRv6转发路径指示信息发送给接入和移动性管理功能AMF，所述AMF向所述UE发送携带所述SRv6转发路径指示信息的扩展策略控制指令的操作。
  10. 一种分段路径控制设备，包括：
    转发规则接收单元，被配置为接收来自接入和移动性管理功能AMF的扩展策略控制指令，所述扩展策略控制指令中包括SRv6转发路径指示信息；
    路由选择单元，被配置为根据所述SRv6转发路径指示信息执行上行段路由选择。
  11. 根据权利要求10所述的分段路径控制设备，还包括：
    请求发送单元，被配置为向AMF发送注册请求，其中，
    所述AMF根据所述注册请求向策略控制功能PCF发送用户策略控制建立请求，
    所述PCF向统一数据管理UDM/统一数据存储库UDR申请所述UE的签约的用户设备路由选择策略URSP信息，
    所述UDM/UDR反馈所述URSP信息，所述URSP信息中包括所述SRv6转发路径指示信息，
    所述PCF通过扩展策略控制建立响应，将所述URSP信息反馈给所述AMF，以触发所述AMF执行向所述UE发送所述扩展策略控制指令的操作。
  12. 根据权利要求10或11所述的分段路径控制设备，还包括：
    指令响应单元，被配置为在收到来自AMF的扩展策略控制指令后，向所述AMF发送UE策略更新响应，
    其中，PCF响应于来自应用功能AF的服务参数的更新信息，通过UE策略控制更新请求，将所述SRv6转发路径指示信息发送给所述AMF，以触发所述AMF执行向所述UE发送所述扩展策略控制指令的操作，其中，所述更新信息中包括SRv6转发路径指示信息。
  13. 一种分段路径控制设备，包括：
    请求获取单元，被配置为获取来自策略控制功能PCF的用户设备UE签约信息请求；
    策略反馈单元，被配置为向所述PCF反馈UE签约的用户设备路由选择策略URSP信息，所述URSP信息中包括SRv6转发路径指示信息，其中，所述PCF通过扩展策略控制建立响应，将所述URSP信息反馈给接入和移动性管理功能AMF，所述AMF向所述UE发送携带所述SRv6转发路径指示信息的扩展策略控制指令。
  14. 一种分段路径控制设备，包括：
    更新请求单元，被配置为响应于更新用户设备UE的SRv6路由的需求，发送服务参数的更新信息，所述更新信息中包括SRv6转发路径指示信息，
    其中，策略控制功能PCF获取所述更新信息，通过UE策略控制更新请求，将所述SRv6转发路径指示信息发送给接入和移动性管理功能AMF，所述AMF向所述UE发送携带所述SRv6转发路径指示信息的扩展策略控制指令的操作。
  15. 一种网络设备，包括：
    存储器；以及
    耦接至所述存储器的处理器，所述处理器被配置为基于存储在所述存储器的指令执行如权利要求1至9任一项所述的分段路径控制方法。
  16. 一种计算机可读存储介质，其上存储有计算机程序指令，该指令被处理器执行时实现权利要求1至9任意一项所述的分段路径控制方法。
  17. 一种计算机程序产品，包括计算机程序或指令，所述计算机程序或指令被处理器执行时实现权利要求1至9任意一项所述的分段路径控制方法。
  18. 一种分段路径控制系统，包括：
    用户设备UE，被配置为执行权利要求1～7任意一项所述的分段路径控制方法；和
    接入和移动性管理功能AMF，被配置为向所述UE发送扩展策略控制指令，所述扩展策略控制指令中包括SRv6转发路径指示信息。
  19. 根据权利要求18所述的分段路径控制系统，还包括：
    策略控制功能PCF，被配置为向所述AMF发送所述SRv6转发路径指示信息，以便触发AMF执行向所述UE发送所述扩展策略控制指令的操作。
  20. 根据权利要求19所述的分段路径控制系统，其中，
    所述AMF还被配置为，接收来自所述UE的注册请求，向PCF发送用户策略控制建立请求；
    所述PCF被配置为响应于来自所述AMF的用户策略控制建立请求，向统一数据管理UDM/统一数据存储库UDR申请所述UE的签约的用户设备路由选择策略URSP信息；接收所述UDM/UDR反馈的URSP信息，将所述URSP信息反馈给所述AMF，以触发所述AMF执行向所述UE发送所述扩展策略控制指令的操作；
    所述分段路径控制系统还包括：
    UDM或UDR中的至少一种，被配置为执行权利要求8所述的方法。
  21. 根据权利要求19所述的分段路径控制系统，还包括：
    应用功能AF，被配置为执行权利要求9所述的方法，
    其中，所述PCF被配置为通过UE策略控制更新请求，将所述SRv6转发路径指示信息发送给所述AMF，以触发所述AMF执行向所述UE发送所述扩展策略控制指令的操作。
  22. 一种计算机程序，用于使处理器执行权利要求1至9任意一项所述的分段路径控制方法。
PCT/CN2024/138371 2024-05-07 2024-12-11 分段路径控制方法、设备、系统和存储介质及程序产品 Pending WO2025232190A1 (zh)

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