WO2023178988A1 - 用户面流量路由配置方法、装置和系统 - Google Patents

用户面流量路由配置方法、装置和系统 Download PDF

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Publication number
WO2023178988A1
WO2023178988A1 PCT/CN2022/124262 CN2022124262W WO2023178988A1 WO 2023178988 A1 WO2023178988 A1 WO 2023178988A1 CN 2022124262 W CN2022124262 W CN 2022124262W WO 2023178988 A1 WO2023178988 A1 WO 2023178988A1
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Prior art keywords
sfc
smf entity
entity
controller
area
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PCT/CN2022/124262
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English (en)
French (fr)
Inventor
王恒
夏旭
李鹏宇
邢燕霞
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中国电信股份有限公司
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Publication of WO2023178988A1 publication Critical patent/WO2023178988A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/08—Access security
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices

Definitions

  • the present disclosure relates to the field of mobile communication technology, and in particular, to a user plane traffic routing configuration method, device and system.
  • the present disclosure provides a user plane traffic routing configuration method, device and system.
  • a user plane traffic routing configuration method is provided, which is applied to a first area in a roaming scenario, where the first area corresponds to a first session management function SMF entity and a first service function chain SFC. controller, and the first user plane function UPF entity.
  • the method includes: the first SMF entity obtains the SFC rules of the user equipment in the roaming scenario from the second SMF entity; the first SMF entity sends the SFC interface to the first SFC controller.
  • the SFC access request includes the SFC rules of the user equipment in a roaming scenario
  • the first SFC controller negotiates with the second SFC controller about the visited location and the The service function path between the home location and the SFC access response is sent to the first SMF entity, wherein the SFC access response includes the traffic guidance information of the service function path between the visited location and the home location;
  • the first SMF entity sends the traffic guidance information to the first UPF entity, so that the first UPF entity forwards the data packet corresponding to the session of the user equipment according to the traffic guidance information, wherein the second SMF entity and the second SFC controller correspond to the second area in the roaming scenario.
  • the SFC rules of the user equipment in the roaming scenario include the SFC rules of the user equipment in the first area
  • the negotiation of the service function path between the visited place and the home place with the second SFC controller includes: The first SFC controller sets the service function path corresponding to the first area according to the SFC rules of the user equipment in the first area; the first SFC controller obtains the service function path access information corresponding to the second area from the second SFC controller; The first SFC controller determines the service function path between the visited location and the home location based on the service function path corresponding to the first area and the service function path access information corresponding to the second area.
  • the first SFC controller obtaining the service function path access information corresponding to the second area from the second SFC controller includes: the first SFC controller transmits the service function path access information to the second SFC controller according to the access information of the second SFC controller.
  • the second SFC controller sends an inter-SFC access request; the first SFC controller receives an inter-SFC access response returned by the second SFC controller, where the inter-SFC access response includes service function path access information corresponding to the second area.
  • the access information of the second SFC controller is obtained by the first SFC controller from the SFC access request; and/or the inter-SFC access request includes at least one of the following: first Access information of the SFC controller and service function path access information corresponding to the first area; and/or the SFC access request also includes at least one of user equipment location and data network name.
  • the first SMF entity obtains the SFC rules of the user equipment in the roaming scenario from the second SMF entity including: the first SMF entity sends a protocol data unit PDU session establishment request to the second SMF entity; the first SMF entity receives A PDU session establishment response sent by the second SMF entity, wherein the PDU session establishment response includes the SFC rules of the user equipment in a roaming scenario.
  • the PDU session establishment request carries a first capability identifier, and the first capability identifier is used to indicate that the first area supports the SFC function.
  • the PDU session establishment response further includes access information of the second SFC controller.
  • the method further includes: the first SMF entity sending the traffic classification information of the user equipment in the SFC rule of the first area to the first UPF entity, wherein the traffic classification information is used to indicate the first UPF The entity classifies data packets corresponding to the session of the user equipment.
  • the first area is the visiting place and the second area is the home place.
  • a user plane traffic routing configuration method is provided, which is applied to a second area in a roaming scenario, where the second area corresponds to the second session management function SMF entity and the second service function chain SFC.
  • the controller, and the second user plane function UPF entity the method includes: the second SMF entity obtains the SFC rules of the user equipment in the roaming scenario, and sends the SFC rules of the user equipment in the roaming scenario to the first SMF Entity; in response to the inter-SFC access request of the first SFC controller, the second SFC controller negotiates with the first SFC controller a service function path between the visited location and the home location, and connects the service function path between the visited location and the home location.
  • the traffic guidance information of the service function path is sent to the second SMF entity; the second SMF entity sends the traffic guidance information to the second UPF entity, so that the second UPF entity performs traffic guidance on the user equipment according to the traffic guidance information.
  • the data packet corresponding to the session is forwarded, wherein the first SMF entity and the first SFC controller correspond to the first area in the roaming scenario.
  • the second SFC controller negotiates with the first SFC controller the service function path between the visited location and the home location including: the second SFC controller obtains the service function path corresponding to the first area from the inter-SFC access request. Service function path access information; the second SFC controller determines the service function path between the visited place and the home place based on the service function path corresponding to the second area and the service function path access information corresponding to the first area, Wherein, the service function path corresponding to the second area is determined based on the SFC rules of the user equipment in the second area.
  • the second SFC controller and the first SFC controller negotiating the service function path between the visited location and the home location further include: the second SFC controller sends an inter-SFC access response to the first SFC controller, where , the inter-SFC access response includes service function path access information corresponding to the second area.
  • the second SFC controller sends an inter-SFC access response to the first SFC controller based on the access information of the first SFC controller carried in the inter-SFC access request.
  • the second SMF entity obtains the service function chain SFC rules of the user equipment in the roaming scenario including: the second SMF entity sends a new session management policy query request to the policy and charging function PCF entity, wherein the PCF The entity corresponds to the second area; the second SMF entity receives a new session management policy query response returned by the PCF entity, where the new session management policy query response includes SFC rules of the user equipment in a roaming scenario.
  • the method further includes: before the second SMF entity obtains the SFC rules of the user equipment in the roaming scenario, the second SMF entity receives a protocol data unit PDU establishment request sent by the first SMF entity, wherein the PDU The session establishment request carries a first capability identifier, and the first capability identifier is used to indicate that the first area supports the SFC function.
  • sending the SFC rules of the user equipment in a roaming scenario to the first SMF entity includes: the second SMF entity sends a PDU session establishment response to the first SMF entity, wherein the PDU session establishment The response includes the service function chain SFC rules of the user equipment in the roaming scenario.
  • the PDU session establishment response further includes access information of the second SFC controller.
  • the method further includes: the second SMF entity sending the traffic classification information of the user equipment in the SFC rule of the second area to the second UPF entity, where the traffic classification information is used to indicate the second UPF The entity classifies data packets corresponding to the session of the user equipment.
  • the first area is the visiting place and the second area is the home place.
  • a user plane traffic routing configuration method is provided, which is applied to roaming scenarios.
  • the first area corresponds to the first session management function SMF entity, the first service function chain SFC controller, and the first user Function UPF entity
  • the second area corresponds to the second SMF entity, the second SFC controller, and the second UPF entity.
  • the method includes: the second SMF entity obtains the SFC rules of the user equipment in the roaming scenario, and transfers the said The SFC rules of the user equipment in the roaming scenario are sent to the first SMF entity; the first SMF entity sends an SFC access request to the first SFC controller, where the SFC access request includes the user equipment in the roaming scenario.
  • the first SFC controller After receiving the SFC access request, the first SFC controller negotiates with the second SFC controller the service function path between the visited location and the home location, and sends an SFC access request to the first SMF entity. Response, wherein the SFC access response includes first traffic guidance information of the service function path between the visited location and the home location; the first SMF entity sends the first traffic guidance information to the first user plane function UPF entity, so that the first UPF entity forwards the data packet corresponding to the session of the user equipment according to the first traffic guidance information; the second SFC controller forwards the service function between the visited place and the home place.
  • the second traffic guidance information of the path is sent to the second SMF entity; the second SMF entity sends the second traffic guidance information to the second UPF entity, so that the second UPF entity performs the processing according to the second traffic guidance information.
  • the data packet corresponding to the session of the user equipment is forwarded and processed.
  • a user plane traffic routing configuration device which is applied to a first area in a roaming scenario and includes a first session management function SMF entity and a first service function chain SFC corresponding to the first area.
  • the controller and the first user plane function UPF entity; the first SMF entity is configured to obtain the SFC rules of the user equipment in the roaming scenario from the second SMF entity; the first SMF entity is also configured to provide control to the first SFC
  • the first SFC controller sends an SFC access request, where the SFC access request includes the SFC rules of the user equipment in a roaming scenario; the first SFC controller is configured to, after receiving the SFC access request, communicate with the The second SFC controller negotiates the service function path between the visited place and the home place, and sends an SFC access response to the first SMF entity, where the SFC access response includes the service function path between the visited place and the home place.
  • the first SMF entity is configured to send the traffic guidance information to the first UPF entity, so that the first UPF entity responds to the session corresponding to the user equipment according to the traffic guidance information.
  • the data packet is forwarded, where the second SMF entity and the second SFC controller correspond to the second area in the roaming scenario.
  • a user plane traffic routing configuration device which is applied to the second area in a roaming scenario and includes a second session management function SMF entity and a second service function chain SFC corresponding to the second area.
  • the controller, and the second user plane function UPF entity; the second SMF entity is configured to obtain the SFC rules of the user equipment in the roaming scenario, and send the SFC rules of the user equipment in the roaming scenario to the first SMF entity ;
  • the second SFC controller is configured to respond to the inter-SFC access request of the first SFC controller, negotiate with the first SFC controller a service function path between the visited location and the home location, and connect the visited location and the home location
  • the traffic guidance information of the service function path between places is sent to the second SMF entity; the second SMF entity is also configured to send the traffic guidance information to the second UPF entity, so that the second UPF entity
  • the guidance information forwards data packets corresponding to the session of the user equipment, where the first SMF entity and the first SFC controller correspond to the
  • a user plane traffic routing configuration system which is applied to roaming scenarios and includes: a first session management function SMF entity corresponding to the first area, a first service function chain SFC controller, and a first service function chain SFC controller.
  • a user plane function UPF entity, a second SMF entity corresponding to the second area, a second SFC controller, and a second UPF entity the second SMF entity is configured to obtain the SFC rules of the user equipment in the roaming scenario, and The SFC rules of the user equipment in the roaming scenario are sent to the first SMF entity; the first SMF entity is configured to send an SFC access request to the first SFC controller, where the SFC access request includes the user SFC rules for the device in a roaming scenario; the first SFC controller is configured to, after receiving the SFC access request, negotiate with the second SFC controller the service function path between the visited location and the home location, and provide The first SMF entity sends an SFC access response, wherein the SFC access response includes first traffic guidance information of the service function path between the visited place and the home place; the first SMF entity is also configured to Send the first traffic guidance information to the first UPF entity, so that the first UPF entity forwards the data packet corresponding to the session of the user equipment according to the first traffic guidance information; the
  • a user plane traffic routing configuration device which is applied to a roaming scenario, including: a memory; and a processor coupled to the memory, the processor being configured to based on the data stored in the memory.
  • the instructions in the memory execute the user plane traffic routing configuration method as described above.
  • a computer-readable storage medium on which computer program instructions are stored.
  • the instructions are executed by a processor, the above user plane traffic routing configuration method is implemented.
  • a computer program including: instructions that, when executed by a processor, cause the processor to perform the user plane traffic routing configuration method as described above.
  • Figure 1 is a schematic diagram of the reference network architecture of the 5G core network in related technologies.
  • Figure 2 is a schematic flowchart of a user plane traffic routing configuration method according to some embodiments of the present disclosure.
  • Figure 3 is a schematic flowchart of a user plane traffic routing configuration method according to other embodiments of the present disclosure.
  • Figure 4 is a schematic flowchart of a user plane traffic routing configuration method according to further embodiments of the present disclosure.
  • Figure 5 is a schematic structural diagram of a user plane traffic routing configuration device according to some embodiments of the present disclosure.
  • Figure 6 is a schematic structural diagram of a user plane traffic routing configuration device according to other embodiments of the present disclosure.
  • Figure 7 is a schematic structural diagram of a user plane traffic routing configuration system according to some embodiments of the present disclosure.
  • Figure 8 is a schematic structural diagram of a user plane traffic routing configuration device according to some embodiments of the present disclosure.
  • Figure 9 is a schematic structural diagram of a computer system according to some embodiments of the present disclosure.
  • any specific values are to be construed as illustrative only and not as limiting. Accordingly, other examples of the exemplary embodiments may have different values.
  • FIG. 1 is a schematic diagram of the 5G core network reference network architecture in related technologies.
  • the 5G core network reference network architecture includes multiple network functional entities (or "network elements").
  • the 5G core network achieves complete separation of the control plane and user plane.
  • the control plane can be deployed centrally to globally schedule forwarding resources, while the user plane can be deployed flexibly in a centralized or distributed manner as needed.
  • the disclosed embodiment mainly relates to the user equipment 101, the user plane functional entity 103, the session management functional entity 107, and the policy and charging functional entity 111 in the 5G core network reference network architecture.
  • the following is a brief introduction to these functional entities.
  • User equipment 101 UE (full name User Equipment), such as smartphones, tablets and other terminal devices used by users.
  • the user equipment 101 forms a radio access network connection with the radio access network node 102, and the radio access network node 102 is connected to the user plane functional entity 103 through the N3 interface.
  • the user equipment 101 is also connected to the access and mobility management functional entity 106 via the N1 interface.
  • UPF full name User Plane Function
  • Session management function entity 107 SMF (full name Session Management Function) entity, supports multiple functions, such as supporting session establishment and modification, allocating and managing IP addresses of user equipment, user plane selection and control, etc.
  • the SMF entity can communicate with other core network functional entities through the Nsmf interface, and the SMF entity can also connect to the UPF entity through the N4 interface.
  • PCF full name Policy Control function
  • SMF SMF
  • neither the control plane nor the user plane of the 5G core network supports related functions in the service function chain architecture. All egress traffic from the visiting or home mobile network side must pass through the same service function entity, which is not conducive to automation. , customized and changeable business development. Moreover, in related technologies, manual routing configuration is required for the service function entities through which user plane traffic passes. Routing configuration requires a long time and has poor scalability and real-time performance.
  • the inventor of the present disclosure thought that by negotiating the service function chain policy between the home and visited mobile networks, service function routing can be configured flexibly and efficiently for session-granular user plane traffic, so that the user plane traffic can be When outflowing from the visited network or home network side, the automatically orchestrated service function chain can be flexibly selected, so that when deploying service functions such as traffic acceleration, the linkage between the visited and home networks can be realized, allowing related business deployment, operation and maintenance. More flexible and automated.
  • Figure 2 is a schematic flowchart of a user plane traffic routing configuration method according to some embodiments of the present disclosure.
  • the first SMF entity, the first SFC controller, and the first UPF entity correspond to the first area in the roaming scenario;
  • the second SMF entity and the second SFC controller correspond to the second area in the roaming scenario. area.
  • the first area is the visiting place and the second area is the home place.
  • the method includes the following steps:
  • Step S210 The first SMF entity obtains the SFC rules of the user equipment in the roaming scenario from the second SMF entity.
  • step S210 the first SMF entity actively or passively acquires the SFC rules of the user equipment in the roaming scenario from the second SMF entity.
  • step S210 includes: the first SMF entity sends a protocol data unit (PDU, full name: Protocol Data Unit) session establishment request to the second SMF entity, and the first SMF entity receives the PDU session establishment response returned by the second SMF entity.
  • PDU protocol data unit
  • the PDU session establishment response includes the SFC rules of the user equipment in the roaming scenario.
  • the PDU session establishment response also includes access information of the second SFC controller.
  • the access information of the second SFC controller includes but is not limited to the IP address, port number, access key, access identification and other information of the second SFC controller.
  • the PDU session establishment request carries a first capability identifier
  • the first capability identifier is used to indicate that the first area supports the SFC function.
  • the second SMF entity determines whether the request carries the first capability identifier. If the request carries the first capability identifier, it performs subsequent processing steps in the embodiments of the present disclosure; if This request does not carry the first capability identifier and executes the relevant standard processing procedures in the mobile network roaming scenario, such as the relevant standard processing procedures in the 5G network roaming scenario.
  • step 210 includes: the first SMF entity receiving the SFC rules of the user equipment in the roaming scenario actively delivered by the second SMF.
  • the SFC rules of the user equipment in the roaming scenario obtained by the first SMF entity from the second SMF entity include at least the SFC rules of the user equipment in the first area.
  • the SFC rules obtained by the first SMF entity from the second SMF entity at least include the SFC rules of the visited network.
  • SFC rules in roaming scenarios include but are not limited to the following: roaming visit or home location indication, traffic classification information, and service function list.
  • the roaming visit place or home place indication is used to indicate whether the SFC rules in the roaming scenario are the SFC rules of the visited place or the SFC rules of the home place;
  • the traffic classification information includes but is not limited to one or more combinations of the following. : Target IP address segment, target port number, network protocol type, data packet length, data network name (DNN, full name Data Network Name), 5G QoS indicator (5QI), etc.
  • the service function list information includes a sequence of service functions that can reflect the sequence of traffic passing through.
  • the SFC rules in the roaming scenario include a traffic direction identifier in addition to roaming visit or home location indications, traffic classification information, and service function lists.
  • the traffic direction is marked as upstream, downstream, or upstream and downstream, which indicates that the traffic to which the SFC rule applies is upstream traffic, downstream traffic, or upstream and downstream traffic.
  • Step S220 The first SMF entity sends an SFC access request to the first SFC controller.
  • the first SMF entity After acquiring the SFC rules in the roaming scenario, the first SMF entity sends an SFC access request carrying the SFC rules of the user equipment in the first area to the first SFC controller.
  • the SFC access request includes, in addition to the SFC rules of the user equipment in the first area, a combination of one or more of the following: the location of the user equipment, and a data network name (DNN).
  • DNN data network name
  • the SFC access request includes, in addition to the SFC rules of the user equipment in the first area, access information of the second SFC controller.
  • the access information of the second SFC controller may be obtained by the first SMF entity from the second SMF entity.
  • the first SMF entity obtains the access information of the second SFC controller from the PDU session establishment response sent by the second SMF entity. Access information.
  • Step S230 After receiving the SFC access request, the first SFC controller negotiates with the second SFC controller the service function path between the visited location and the home location, and sends an SFC access response to the first SMF entity.
  • the first SFC controller and the second SFC controller negotiate the service function path between the visited location and the home location including: step S231 to step S233.
  • Step S231 The first SFC controller sets the service function path corresponding to the first area according to the SFC rules of the user equipment in the first area.
  • the first SFC controller selects, modifies or creates a corresponding service function path (SFP, full name Service Function Path) according to the SFC rules of the user equipment in the first area carried in the SFC access request.
  • SFP service function path
  • the first SFC controller selects, modifies or creates a service corresponding to the first area according to the SFC rules of the user equipment in the first area, the location of the user equipment, and the name of the data network carried in the SFC access request. Functional path. For example, the first SFC controller selects an SFP that can support the above service functions based on the service functions requested by the SFC rules; the first SFC controller selects an SFP that is closer to the user equipment deployment based on the location of the user equipment; the first SFC controller selects an SFP based on the data network Select the SFP corresponding to the data network for the name so that traffic from different data networks does not share the same SFP.
  • Step S232 The first SFC controller obtains the service function path access information corresponding to the second area from the second SFC controller.
  • the SFC access request carries access information of the second SFC controller.
  • the first SFC controller obtains the access information of the second SFC controller from the SFC access request; the first SFC controller sends a message to the second SFC controller based on the access information of the second SFC controller.
  • Inter-SFC access request; the first SFC controller receives an inter-SFC access response returned by the second SFC controller, where the inter-SFC access response includes service function path access information corresponding to the second area.
  • the inter-SFC access request includes at least one of the following: access information of the first SFC controller and service function path access information corresponding to the first area.
  • access information of the first SFC controller By carrying the access information of the first SFC controller in the inter-SFC access request, it is convenient for the second SFC controller to communicate with the first SFC controller accordingly; by carrying the service function corresponding to the first area in the inter-SFC access request Path access information facilitates the second SFC controller to quickly determine the service function path between the visited location and the home location, improving SFP negotiation efficiency.
  • the SFC access request does not carry access information of the second SFC controller.
  • the first SFC controller first queries the access information of the second SFC controller, then sends an inter-SFC access request to the second SFC controller accordingly, and receives the second area sent by the second SFC controller. Corresponding service function path access information.
  • the service function path access information corresponding to the second area includes but is not limited to: access IP and access port number.
  • Step S233 The first SFC controller determines the service function path between the visited place and the home place based on the service function path corresponding to the first area and the service function path access information corresponding to the second area.
  • the first area is the visited network
  • the first SFC controller determines the distance between the visited place and the home place based on the service function path corresponding to the visited network and the service function path access information corresponding to the home network.
  • the service function path specifically the service function path from the place of visit to the place of home.
  • the SFP in the first area and the SFP in the second area are connected to facilitate subsequent service function routing of data packets corresponding to the user equipment session.
  • the first SFC controller After the first SFC controller obtains the service function path between the visited location and the home location, it generates traffic guidance information for the service function path, and sends the SFC access response carrying the service function path traffic guidance information to the first SMF. entity.
  • the SFC access response also includes a negotiation success indicator to indicate that the two-party networks successfully negotiated the service function path between the visited place and the home place in the roaming scenario.
  • the traffic guidance information of SFP includes a Network Service Header (NSH, full name: Network Service Header).
  • NSH is an encapsulation format designed for service chaining. NSH includes basic header fields, service function path identification) and other fields.
  • the traffic guidance information of the SFP may also include one or a combination of one or more of the following: transport layer protocol type, network layer protocol type, and access IP address of the service function path. , the access port number of the service function path, etc.
  • Step S240 The first SMF entity sends the traffic guidance information to the first UPF entity, so that the first UPF entity forwards the data packet corresponding to the session of the user equipment according to the traffic guidance information.
  • the first SMF entity sends a session modification request to the first UPF entity.
  • the first SMF entity sends a session modification request to the first UPF entity through the N4 interface.
  • the session modification request includes traffic guidance information of the service function path determined through steps 210 to 230.
  • the traffic guidance information is used to instruct the first UPF entity to forward the data packet corresponding to the user plane session to the corresponding service function path.
  • the first UPF entity encapsulates different data packets based on the traffic guidance information. For example, it adds NSH to the original data packet, encapsulates the transport layer and network layer, and then encapsulates the encapsulated data.
  • the packet is forwarded to one or more SFPs.
  • the session modification request sent by the first SMF entity to the first UPF entity in addition to the traffic guidance information of the service function path determined through steps 210 to 230, also includes the user equipment in the first area.
  • SFC rule parameters such as the traffic classification information of the user equipment in the SFC rule of the first area.
  • the traffic classification information is used to instruct the first UPF entity to classify the data packets corresponding to the session.
  • the first UPF entity classifies the data packets corresponding to the session according to the traffic classification information in the SFC rule, and encapsulates different data packets based on the traffic guidance information. For example, adding NSH, encapsulates the transport layer and network layer, and then forwards the encapsulated data packets to one or more SFPs.
  • the first SMF entity obtains the SFC rules of the user equipment in the roaming scenario from the second SMF entity, and sends an SFC access request carrying the SFC rules to the first SFC controller.
  • the first SFC controller After receiving the SFC access request, negotiate with the second SFC controller the service function path between the visited place and the home place, and send the traffic guidance information of the service function path to the first SMF entity, so that the first SMF entity.
  • Service function chain so as to achieve linkage between the visited and home networks when deploying service functions such as traffic acceleration, making related business deployment, provisioning, and maintenance more flexible and automated.
  • service functions such as traffic acceleration, making related business deployment, provisioning, and maintenance more flexible and automated.
  • it can reduce the investment and construction of high-end service software and hardware settings to a certain extent, making the methods of the disclosed embodiments more effective in network scenarios such as 5G or 6G. Good domestic cross-provincial return and international application prospects.
  • Figure 3 is a schematic flowchart of a user plane traffic routing configuration method according to other embodiments of the present disclosure.
  • the second SMF entity, the second SFC controller, the second UPF entity, and the policy and charging function (PCF) entity correspond to the second area in the roaming scenario
  • the first SMF entity, the first The SFC controller corresponds to the first area in the roaming scenario.
  • the first area is the visiting place and the second area is the home place.
  • the method includes the following steps:
  • Step S310 The second SMF entity obtains the SFC rules of the user equipment in the roaming scenario, and sends the SFC rules of the user equipment in the roaming scenario to the first SMF entity.
  • step S310 the second SMF entity proactively or in response to the request of the first SMF entity delivers the obtained SFC rules of the user equipment in the roaming scenario to the first SMF entity.
  • the second SMF entity after receiving the protocol data unit (PDU) session establishment request sent by the first SMF entity, the second SMF entity obtains the SFC rules of the user equipment in the roaming scenario from the PCF entity, and then sets the user equipment in the roaming scenario.
  • the SFC rules in the scenario are carried in the PDU session establishment response and sent to the first SMF entity.
  • the PDU session establishment response also includes the access information of the second SFC controller and the interface tunnel information on the first area side, such as the N9 interface tunnel information on the visited side under the 5G network.
  • the second SMF entity can obtain the SFC rules of the user equipment in the roaming scenario from the PCF entity in the following exemplary manner: the second SMF entity sends a new session management policy query request to the PCF entity; the second SMF entity receives the PCF entity The returned new session management policy query response includes the SFC rules of the user equipment in the roaming scenario.
  • the second SMF entity after receiving the PDU session establishment request, the second SMF entity first determines whether the request carries the first capability identifier. If the request carries the first capability identifier, it performs subsequent processing steps in the embodiments of the present disclosure. ; If the request does not carry the first capability identifier, execute the relevant standard processing procedures in the mobile network roaming scenario, such as the relevant standard processing procedures in the 5G network roaming scenario.
  • the first capability identifier is used to indicate that the first area supports the SFC function.
  • the SFC rules of the user equipment in the roaming scenario obtained by the second SMF entity include the SFC rules of the user equipment in the first area and the SFC rules of the user equipment in the second area.
  • the second SMF entity at least sets the user equipment in the first area.
  • the SFC rules of the area are sent to the first SMF entity.
  • Step S320 In response to the inter-SFC access request of the first SFC controller, the second SFC controller negotiates with the first SFC controller the service function path between the visited location and the home location, and sends the traffic guidance information of the service function path. to the second SMF entity.
  • the second SFC controller and the first SFC controller negotiate the service function path between the visited location and the home location including: the second SFC controller obtains the service function corresponding to the first area from the inter-SFC access request. Path access information; the second SFC controller determines the service function path between the visited location and the home location based on the service function path corresponding to the second area and the service function path access information corresponding to the first area.
  • the service function path access information corresponding to the first area includes but is not limited to the following information: the access IP and access port number of the service function path corresponding to the first area.
  • the service function path corresponding to the second area is determined in advance according to the SFC rules of the user equipment in the second area before the second SFC controller receives the inter-SFC access request; or, after receiving the inter-SFC access request, Determined by the second SFC controller according to the SFC rules of the user equipment in the second area.
  • the method further includes: the second SFC controller sends an inter-SFC access response to the first SFC controller.
  • the second SFC controller sends an inter-SFC access response to the first SFC controller according to the access information of the first SFC controller carried in the inter-SFC access request.
  • the inter-SFC access response includes access information of the service function path corresponding to the second area, including but not limited to the following information: access IP and access port number of the service function path corresponding to the second area.
  • Step S330 The second SMF entity sends the traffic guidance information to the second UPF entity, so that the second UPF entity forwards the data packet corresponding to the session of the user equipment according to the traffic guidance information.
  • the second SMF entity sends a session modification request to the second UPF entity.
  • the second SMF entity sends a session modification request to the second UPF entity through the N4 interface.
  • the session modification request includes traffic guidance information of the service function path determined through steps 310 to 320.
  • the traffic guidance information is used to instruct the second UPF entity to forward the data packet corresponding to the user plane session to the corresponding service function path.
  • the second UPF entity encapsulates different data packets based on the traffic guidance information. For example, it adds NSH to the original data packet, encapsulates the transport layer and network layer, and then encapsulates the encapsulated data.
  • the packet is forwarded to one or more SFPs.
  • the session modification request sent by the second SMF entity to the second UPF entity in addition to the traffic guidance information of the service function path determined through steps 310 to 320, also includes the user equipment in the second area.
  • SFC rule parameters such as the traffic classification information of the user equipment in the SFC rule of the second area.
  • the traffic classification information is used to instruct the second UPF entity to classify the data packets corresponding to the session.
  • the second UPF entity classifies the data packets corresponding to the session according to the traffic classification information, and encapsulates different data packets based on the traffic guidance information. For example, adding NSH to the original data packets and performing transport layer Encapsulate it with the network layer, and then forward the encapsulated data packet to one or more SFPs.
  • the above steps can flexibly and efficiently configure service function routing for session-granular user plane traffic in roaming scenarios, so that user plane traffic can flexibly select automatically orchestrated services when flowing out of the second area of roaming.
  • Function chain so as to achieve linkage between the visited and home networks when deploying service functions such as traffic acceleration, making related business deployment, provisioning, and maintenance more flexible and automated.
  • service functions such as traffic acceleration, making related business deployment, provisioning, and maintenance more flexible and automated.
  • it can reduce the investment and construction of high-end service software and hardware settings to a certain extent, making the methods of the disclosed embodiments more effective in network scenarios such as 5G or 6G. Good domestic cross-provincial return and international application prospects.
  • Figure 4 is a schematic flowchart of a user plane traffic routing configuration method according to further embodiments of the present disclosure.
  • the first area in the roaming scenario corresponds to the first session management function SMF entity, the first service function chain SFC controller, and the first user plane function UPF entity
  • the second area in the roaming scenario corresponds to on the second SMF entity, the second SFC controller, and the second UPF entity.
  • the first area is the visiting place and the second area is the home place.
  • the method includes:
  • Step 401 The first SMF entity sends a PDU session establishment request to the second SMF entity.
  • the relevant network elements in the first regional network determine that the user equipment session is applicable to the roaming mode.
  • the method of the embodiment of the present disclosure is executed. For example, when the user equipment moves to the 5G network of the visited place, the access and mobility management functional entity of the visited place decides that the user equipment session uses the home-routed roaming method. This roaming method means that the roaming user passes through the gateway H of the home network. -PGW access obtains services provided by the home network.
  • the method of the embodiment of the present disclosure is executed.
  • the PDU session establishment request carries a first capability identifier, and the first capability identifier is used to indicate that the first area supports the SFC function.
  • the PDU session establishment request can also carry the visited side N9 interface tunnel information (CN Tunnel Info), etc.
  • the method further includes: the first SMF entity sends a session establishment request to the first UPF entity, and the first UPF entity returns a session establishment response to the first SMF entity.
  • the first SMF entity sends an N4 session establishment request to the first UPF entity, and the first UPF entity returns an N4 session establishment response to the first SMF entity.
  • the response carries basic session information, such as CN Tunnel Info.
  • Step 402 The second SMF entity sends a new session management policy query request to the PCF entity.
  • Step 403 The PCF entity returns a new session management policy query response to the second SMF entity.
  • the PCF entity corresponds to the second area in the roaming scenario, and it stores policy and charging (PCC) rules of the user equipment. If the PCC rule of the user equipment contains one or more SFC rules for the user equipment in the roaming scenario (i.e., roaming SFC rules), after receiving the new session management policy query request of the second SMF entity, the roaming SFC rules of the user equipment are The rules are carried in the new session management policy query response and sent to the second SMF entity.
  • PCC policy and charging
  • the dynamic roaming SFC rules take precedence if the roaming SFC rules of the user equipment include both default roaming SFC rules and dynamic roaming SFC rules.
  • the roaming SFC rules of the user equipment include both default roaming SFC rules and dynamic roaming SFC rules, it is necessary to comprehensively judge based on one or more factors that the default roaming SFC rules shall prevail.
  • the dynamic roaming SFC rules still prevail.
  • the SFC rules of the user equipment in the roaming scenario include but are not limited to the following: roaming visit or home indication, traffic classification information, and service function list.
  • the roaming visit place or home place indication is used to indicate whether the SFC rules in the roaming scenario are the SFC rules of the visited place or the SFC rules of the home place;
  • the traffic classification information includes but is not limited to one or more combinations of the following. : Target IP address segment, target port number, network protocol type, packet length, data network name (DNN), 5G QoS indicator (5QI), etc.
  • the service function list information includes a sequence of service functions that can reflect the sequence of traffic passing through.
  • the SFC rules of the user equipment in the roaming scenario include, in addition to the roaming visit or home location indication, traffic classification information, and service function list, the SFC rules also include a traffic direction identifier. Among them, the traffic direction is marked as upstream, downstream, or upstream and downstream, which indicates that the traffic to which the SFC rule applies is upstream traffic, downstream traffic, or upstream and downstream traffic.
  • Step 404 The second SMF entity sends an SFC access request to the second SFC controller.
  • the SFC rules of the user equipment in the roaming scenario obtained by the second SMF entity from the PCF entity include: SFC rules of the user equipment in the first area and SFC rules of the user equipment in the second area.
  • the SFC rules of the user equipment in the first area and the SFC rules of the user equipment in the second area may be the same SFC rule, or they may be different SFC rules.
  • the second SMF entity After obtaining the SFC rules in the roaming scenario, the second SMF entity sends an SFC access request to the second SFC controller.
  • the SFC access request carries the SFC rules of the user equipment in the second area.
  • the SFC access request in addition to the SFC rule that the user equipment is in the second area, also includes one or a combination of the following: the location of the user equipment, and a data network name (DNN).
  • DNN data network name
  • Step 405 The second SFC controller sets the SFP.
  • the SFC controller selects, modifies or creates a service function path (SFP) corresponding to the second area according to the SFC rule carried in the SFC access request and one or more of the location of the user equipment and the name of the data network. ).
  • SFP service function path
  • Step 406 The second SFC controller returns an SFC access response to the second SMF entity.
  • the SFC access response sent by the second SFC controller includes traffic guidance information of the SFP corresponding to the second area.
  • the traffic guidance information of the SFP corresponding to the second area includes: Network Service Header (NSH).
  • NSH is an encapsulation format designed for service chaining. NSH includes basic header fields, service function path identification) and other fields.
  • the traffic guidance information may also include one or more of the following combinations: transport layer protocol type, network layer protocol type, access IP address of the service function path, access port number of the service function path, etc.
  • the SFC access response also includes access information of the second SFC controller.
  • the access information of the second SFC controller includes but is not limited to the access IP, access port number, access key, access identification, etc. of the second SFC controller.
  • Step 407 The second SMF entity sends a session establishment request to the second UPF entity.
  • the second SMF entity sends an N4 session establishment request to the second UPF entity.
  • the session establishment request includes traffic classification information in the SFP corresponding to the second area, and traffic guidance information of the SFP corresponding to the second area.
  • the second UPF entity receives the downlink traffic of the user equipment, it classifies the data packets in the downlink traffic according to the traffic classification information in the SFP corresponding to the second area; and classifies the data packets in the downlink traffic according to the traffic guidance information of the SFP corresponding to the second area.
  • Different categories of data packets are encapsulated and forwarded.
  • the method before step 407, the method further includes: the second SMF entity selects the second SMF entity from the plurality of UPF entities corresponding to the second area based on one or more factors such as SFC function support, SFP location information, etc. Two UPF entities.
  • Step 408 The second UPF entity returns a session establishment response to the second SMF entity.
  • the second UPF entity returns an N4 session establishment response to the second SMF entity.
  • Step 409 The second SMF entity returns a PDU session establishment response to the first SMF entity.
  • the PDU session establishment response includes the SFC rules of the user equipment in the first area. In some embodiments, the PDU session establishment response also includes access information of the second SFC controller.
  • Step 410 The first SMF entity sends an SFC access request to the first SFC controller.
  • the SFC access request includes the SFC rules of the user equipment in the first area and the access information of the second SFC controller. In some embodiments, the SFC access request may also include the location of the user equipment, DNN and other information.
  • Step 411 The first SFC controller sets the SFP.
  • the first SFC controller sets the SFP corresponding to the first area according to information such as SFC rules of the user equipment in the first area.
  • Step 412 The first SFC controller sends an inter-SFC access request to the second SFC controller.
  • the inter-SFC access request includes service function path access information corresponding to the first area.
  • the inter-SFC access request also includes access information of the first SFC controller.
  • the access information of the first SFC controller By carrying the access information of the first SFC controller in the inter-SFC access request, it is convenient for the second SFC controller to communicate with the first SFC controller accordingly.
  • Step 413 The second SFC controller sends the updated SFP traffic guidance information to the second SMF entity.
  • the second SFC controller after receiving the inter-SFC access request, obtains the service function path access information corresponding to the first area from the inter-SFC access request, and accesses according to the service function path corresponding to the first area.
  • Information, as well as the preset service function path of the second area determine the service function path between the visited place and the home place, and then generate the second traffic guidance information of the service function path between the visited place and the home place, that is, the second flow guidance information of the service function path between the visited place and the home place is generated.
  • the traffic guidance information of the SFP from the second area to the first area is the updated SFP traffic guidance information, and then the updated SFP traffic guidance information is sent to the second SMF entity.
  • the inter-SFC access request does not carry the service function path access information corresponding to the first area.
  • the second SFC controller obtains the service function path access information corresponding to the first area by actively querying the first SFC controller.
  • Step 414 The second SFC controller returns an inter-SFC access response to the first SFC controller.
  • the inter-SFC access response includes service function path access information corresponding to the second area.
  • step 413 and step 414 is not limited.
  • step 413 can be executed first, and then step 414 can be executed; or step 414 can be executed first, and then step 413 can be executed; or both can be executed simultaneously.
  • steps 413 and step 414 can be executed first, and then step 413 can be executed; or both can be executed simultaneously.
  • those skilled in the art can also adjust the execution order of other steps.
  • Step 415 The first SFC controller returns an SFC access response to the first SMF entity.
  • the SFC access response includes traffic guidance information of the SFP between the visited location and the home location, specifically the traffic guidance information of the SFP from the first area to the second area. For example, when the first area is the visited location, the SFC access response includes traffic guidance information of the SFP from the visited location to the home location.
  • Step 416 The first SMF entity sends a session modification request to the first UPF entity.
  • the session modification request includes the first traffic guidance information of the service function path between the visited location and the home location, that is, the traffic guidance information of the SFP from the first area to the second area, the SFC of the user equipment in the first area Traffic classification information in rules.
  • the session modification request also includes base station tunnel information, home tunnel information, visited tunnel information, etc.
  • Step 417 The first UPF entity returns a session modification response to the first SMF entity.
  • the first UPF entity modifies the user plane session based on the traffic guidance information of the SFP from the first area to the second area, the traffic classification information of the user equipment in the SFC rules of the first area, etc. carried in the session modification request. For example, in the 5G network, the first UPF entity modifies the N9 interface session based on the information carried in the session modification request.
  • the first UPF entity classifies the data packets corresponding to the session according to the traffic classification information in the SFC rule, and encapsulates different data packets based on the traffic guidance information. For example, adding NSH, encapsulates the transport layer and network layer, and then forwards the encapsulated data packets to one or more SFPs.
  • Step 418 The second SMF entity sends a session modification request to the second UPF entity.
  • the second SMF entity sends a session modification request to the second UPF entity, where the session modification request carries updated SFP traffic guidance information.
  • the downlink traffic and downlink cache traffic of the user equipment from the second area can enter the first area.
  • the downlink traffic of the user equipment from the home location can enter the visited location network and then be sent to the base station and the user equipment.
  • Step 419 The second UPF entity returns a session modification response to the second SMF entity.
  • the above steps can flexibly and efficiently configure service function routing for session-granular user plane traffic in roaming scenarios, so that user plane traffic can flexibly select automatically arranged routes when flowing out from the roaming visit place or home place.
  • Service function chain so as to achieve linkage between the visited and home networks when deploying service functions such as traffic acceleration, making related business deployment, provisioning, operation and maintenance more flexible and automated.
  • service functions such as traffic acceleration, making related business deployment, provisioning, operation and maintenance more flexible and automated.
  • it can reduce the investment and construction of high-end service software and hardware settings to a certain extent, making the methods of the disclosed embodiments more effective in network scenarios such as 5G or 6G. Good domestic cross-provincial return and international application prospects.
  • FIG. 5 is a schematic structural diagram of a user plane traffic routing configuration device according to some embodiments of the present disclosure.
  • the user plane traffic routing configuration device in the embodiment of the present disclosure is applied to the first area in the roaming scenario, and includes the first SMF entity 510, the first SFC controller 520, and the first UPF entity 530 corresponding to the first area.
  • the first SMF entity 510 is configured to obtain the SFC rules of the user equipment in the roaming scenario from the second SMF entity.
  • the first SMF entity 510 is further configured to send an SFC access request to the first SFC controller 520, where the SFC access request includes the SFC rules of the user equipment in a roaming scenario.
  • the first SFC controller 520 is configured to, after receiving the SFC access request, negotiate with the second SFC controller a service function path between the visited location and the home location, and send an SFC to the first SMF entity. Access response.
  • the SFC access response includes traffic guidance information of the service function path between the visited place and the home place.
  • the first SMF entity 510 is also configured to send the traffic guidance information to the first UPF entity 530, so that the first UPF entity 530 forwards the data packet corresponding to the session of the user equipment according to the traffic guidance information. deal with.
  • the second SMF entity and the second SFC controller correspond to the second area.
  • the above device can flexibly and efficiently configure service function routing for session-granular user plane traffic in roaming scenarios, so that user plane traffic can flexibly select automatically orchestrated services when flowing out of the first area of roaming.
  • Function chain so as to achieve linkage between the visited and home networks when deploying service functions such as traffic acceleration, making related business deployment, provisioning, operation and maintenance more flexible and automated.
  • service functions such as traffic acceleration, making related business deployment, provisioning, operation and maintenance more flexible and automated.
  • it can reduce the investment and construction of high-end service software and hardware settings to a certain extent, making the methods of the disclosed embodiments more effective in network scenarios such as 5G or 6G. Good domestic cross-provincial return and international application prospects.
  • FIG. 6 is a schematic structural diagram of a user plane traffic routing configuration device according to other embodiments of the present disclosure.
  • the user plane traffic routing configuration device in the embodiment of the present disclosure is applied to the second area in the roaming scenario, and includes a second SMF entity 610, a second SFC controller 620, and a second UPF entity 630 corresponding to the second area.
  • the second SMF entity 610 is configured to obtain the SFC rules of the user equipment in the roaming scenario, and send the SFC rules of the user equipment in the roaming scenario to the first SMF entity.
  • the second SFC controller 620 is configured to respond to the inter-SFC access request of the first SFC controller, negotiate with the first SFC controller a service function path between the visited location and the home location, and connect the visited location and the home location.
  • the traffic guidance information of the service function path between places is sent to the second SMF entity 610.
  • the second SMF entity 610 is also configured to send the traffic guidance information to the second UPF entity 630, so that the second UPF entity 630 forwards the data packet corresponding to the session of the user equipment according to the traffic guidance information. Processing, wherein the first SMF entity and the first SFC controller correspond to the first area in the roaming scenario.
  • the above device can flexibly and efficiently configure service function routing for session-granular user plane traffic in roaming scenarios, so that user plane traffic can flexibly select automatically orchestrated services when flowing out of the second area of roaming.
  • Function chain so as to achieve linkage between the visited and home networks when deploying service functions such as traffic acceleration, making related business deployment, provisioning, operation and maintenance more flexible and automated.
  • service functions such as traffic acceleration, making related business deployment, provisioning, operation and maintenance more flexible and automated.
  • it can reduce the investment and construction of high-end service software and hardware settings to a certain extent, making the methods of the disclosed embodiments more effective in network scenarios such as 5G or 6G. Good domestic cross-provincial return and international application prospects.
  • FIG. 7 is a schematic structural diagram of a user plane traffic routing configuration system according to some embodiments of the present disclosure.
  • the embodiment of this disclosure takes the mobile network as a 5G network as an example for explanation.
  • the system includes: a first session management functional entity 710 corresponding to the visited 5G network, a first service function chain controller 720, and a first user plane functional entity 730, and a first session management functional entity 710 corresponding to the home 5G network.
  • the second session management function entity 740 , the policy and charging function entity 750 , the second service function chain controller 760 , and the second user plane function entity 770 are examples of the second user plane function entity 710 corresponding to the home 5G network.
  • the second session management function entity 740 is configured to obtain the SFC rules of the user equipment in the roaming scenario, and send the SFC rules of the user equipment in the roaming scenario to the first session management function entity 710.
  • the second session management function entity 740 after receiving the protocol data unit (PDU) session establishment request sent by the first session management function entity 710, obtains the roaming scenario of the user equipment from the policy and charging function entity 750. The SFC rules under the user equipment in the roaming scenario are then carried in the PDU session establishment response and sent to the first session management function entity 710.
  • the PDU session establishment response also includes the access information of the second service function chain controller 760 and the interface tunnel information on the first area side, such as the N9 interface tunnel information on the visited side under the 5G network.
  • the first session management function entity 710 is configured to send an SFC access request to the first service function chain controller 720 .
  • the SFC access request includes SFC rules of the user equipment in a roaming scenario.
  • the SFC access request includes the SFC rules of the user equipment at the visited location and the access information of the second service function chain controller. In some embodiments, the SFC access request may also include the location of the user equipment, DNN and other information.
  • the first service function chain controller 720 is configured to, after receiving the SFC access request, negotiate with the second service function chain controller 760 about the service function path between the visited location and the home location, and provide the first session
  • the management function entity 710 sends an SFC access response.
  • the SFC access response includes first traffic guidance information, that is, traffic guidance information of the SFP from the visiting place to the home place.
  • the first session management function entity 710 is further configured to send the first traffic guidance information to the first user plane function entity 730, so that the first user plane function entity 730 controls the session of the user equipment according to the first traffic guidance information.
  • the corresponding data packets are forwarded.
  • the first session management function entity 710 is also configured to send the traffic classification information of the user equipment in the SFC rule of the visited location to the first user plane function entity 730, wherein the traffic classification information The information is used to instruct the first user plane functional entity 730 to classify data packets corresponding to the session of the user equipment.
  • the second service function chain controller 760 is configured to send the second traffic guidance information to the second session management function entity 740 .
  • the second traffic guidance information is the traffic guidance information of the SFP from the home place to the visited place.
  • the second session management function entity 740 is further configured to send the second traffic guidance information to the second user plane function entity 770, so that the second user plane function entity 770 performs the processing of the second traffic guidance information on the second user plane function entity 770 according to the second traffic guidance information.
  • the data packet corresponding to the session of the user equipment is forwarded and processed.
  • the second session management functional entity 740 is also configured to send the traffic classification information of the user equipment in the home SFC rule to the second user plane functional entity 770, wherein the traffic classification The information is used to instruct the second user plane functional entity 770 to classify data packets corresponding to the session of the user equipment.
  • the above system can flexibly and efficiently configure service function routing for session-granular user plane traffic in roaming scenarios, so that user plane traffic can flexibly choose to automatically orchestrate when flowing out from the roaming visit place or home place.
  • Service function chain so as to achieve linkage between the visited and home networks when deploying service functions such as traffic acceleration, making related business deployment, provisioning, operation and maintenance more flexible and automated.
  • service functions such as traffic acceleration, making related business deployment, provisioning, operation and maintenance more flexible and automated.
  • it can reduce the investment and construction of high-end service software and hardware settings to a certain extent, making the embodiments of the present disclosure have better domestic, cross-provincial and international application prospects. .
  • the embodiments of the present disclosure take a 5G network as an example for explanation, but this does not mean that the system of the present disclosure can only be used in 5G networks.
  • the disclosed system can also be applied to 6G networks and other application scenarios.
  • Figure 8 is a block diagram illustrating a user plane traffic routing configuration device according to other embodiments of the present disclosure.
  • the user plane traffic routing configuration device 800 includes a memory 810; and a processor 820 coupled to the memory 810.
  • the memory 810 is used to store instructions for executing corresponding embodiments of the user plane traffic routing configuration method.
  • the processor 820 is configured to execute the user plane traffic routing configuration method in any embodiment of the present disclosure based on instructions stored in the memory 810 .
  • Figure 9 is a block diagram illustrating a computer system for implementing some embodiments of the present disclosure.
  • Computer system 900 may be embodied in the form of a general purpose computing device.
  • Computer system 900 includes memory 910, a processor 920, and a bus 930 that connects various system components.
  • Memory 910 may include, for example, system memory, non-volatile storage media, and the like.
  • System memory stores, for example, operating systems, applications, boot loaders, and other programs.
  • System memory may include volatile storage media such as random access memory (RAM) and/or cache memory.
  • RAM random access memory
  • the non-volatile storage medium stores, for example, instructions for executing corresponding embodiments of at least one of the user plane traffic routing configuration methods.
  • Non-volatile storage media includes but is not limited to disk storage, optical storage, flash memory, etc.
  • the processor 920 may be implemented as a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete hardware components such as discrete gates or transistors.
  • each module such as the judgment module and the determination module, can be implemented by instructions executing corresponding steps in a central processing unit (CPU) running memory, or by dedicated circuits executing corresponding steps.
  • CPU central processing unit
  • Bus 930 may use any of a variety of bus structures.
  • bus structures include, but are not limited to, Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MCA) bus, and Peripheral Component Interconnect (PCI) bus.
  • ISA Industry Standard Architecture
  • MCA Micro Channel Architecture
  • PCI Peripheral Component Interconnect
  • the computer system 900 may also include an input/output interface 940, a network interface 950, a storage interface 960, etc. These interfaces 940, 950, 960, the memory 910 and the processor 920 may be connected through a bus 930.
  • the input and output interface 940 can provide a connection interface for input and output devices such as a monitor, mouse, and keyboard.
  • the network interface 950 provides a connection interface for various networked devices.
  • the storage interface 960 provides a connection interface for external storage devices such as floppy disks, USB disks, and SD cards.
  • These computer readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable device to produce a machine, such that execution of the instructions by the processor produces implementations in one or more blocks of the flowcharts and/or block diagrams.
  • a device with specified functions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable device to produce a machine, such that execution of the instructions by the processor produces implementations in one or more blocks of the flowcharts and/or block diagrams.
  • Computer-readable program instructions which may also be stored in computer-readable memory, cause the computer to operate in a specific manner to produce an article of manufacture, including implementing the functions specified in one or more blocks of the flowcharts and/or block diagrams. instructions.
  • the disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware aspects.
  • service function routing can be flexibly and efficiently configured for session granular user plane traffic, so that automatically orchestrated service functions can be flexibly selected when user plane traffic flows out from the mobile network side. chain to meet various customized needs under the trend of network integration.

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Abstract

本公开提出了一种用户面流量路由配置方法、装置和系统，涉及移动通信技术领域。该方法包括：第一SMF实体从第二SMF实体获取用户设备在漫游场景下的SFC规则；第一SMF实体向第一SFC控制器发送SFC接入请求，第一SFC控制器在接收到SFC接入请求后，与第二SFC控制器协商拜访地与归属地之间的服务功能路径，并向第一SMF实体发送携带该服务功能路径的流量引导信息的SFC接入响应，以使第一SMF实体对第一UPF实体进行会话配置。通过以上方法，能够为会话粒度的用户面流量灵活、高效地配置服务功能路由，使得用户面流量在从拜访地网络或归属地网络侧流出时可以灵活选择自动编排的服务功能链。

Description

用户面流量路由配置方法、装置和系统
相关申请的交叉引用
本申请是以CN申请号为202210299586.0，申请日为2022年3月25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
本公开涉及移动通信技术领域，尤其涉及一种用户面流量路由配置方法、装置和系统。
背景技术
IETF RFC 7665等规范定义了服务功能链(SFC，Service Function Chain)相关架构、协议等，然而当前5G标准中控制面与用户面均不支持服务功能链架构的相关功能。
在移动网络漫游方案中，比如在本地路由(Home-routed)漫游方式下，当用户流量从拜访地5G网络中作为锚点的用户平面功能(UPF，User Plane Function)实体流出，或者进入归属地5G网络中作为锚点的用户平面功能(UPF，User Plane Function)实体时，可能需要通过一个或多个服务功能实体，如防火墙设备、网络地址转换(NAT，Network Address Translation)设备等。相关技术中，这些服务功能实体都是基于人工预配置的方式进行部署的。在这种方式下，从拜访地或归属地移动网络侧的所有出口流量都要经过相同的服务功能实体。
发明内容
本公开提供了一种用户面流量路由配置方法、装置和系统。
根据本公开的第一方面，提供了一种用户面流量路由配置方法，应用于漫游场景下的第一区域，所述第一区域对应于第一会话管理功能SMF实体、第一服务功能链SFC控制器、以及第一用户面功能UPF实体，所述方法包括：第一SMF实体从第二SMF实体获取用户设备在漫游场景下的SFC规则；第一SMF实体向第一SFC控制器发送SFC接入请求，其中，所述SFC接入请求包括所述用户设备在漫游场景下的SFC规则；第一SFC控制器在接收到所述SFC接入请求后，与第二SFC控制器协商 拜访地与归属地之间的服务功能路径，并向所述第一SMF实体发送SFC接入响应，其中，所述SFC接入响应包括所述拜访地与归属地之间的服务功能路径的流量引导信息；第一SMF实体将所述流量引导信息发送至第一UPF实体，以使第一UPF实体根据所述流量引导信息对所述用户设备的会话对应的数据包进行转发处理，其中，第二SMF实体和第二SFC控制器对应于漫游场景下的第二区域。
在一些实施例中，所述用户设备在漫游场景下的SFC规则包括用户设备在第一区域的SFC规则，所述与第二SFC控制器协商拜访地与归属地之间的服务功能路径包括：第一SFC控制器根据用户设备在第一区域的SFC规则，设置第一区域对应的服务功能路径；第一SFC控制器从第二SFC控制器获取第二区域对应的服务功能路径接入信息；第一SFC控制器根据第一区域对应的服务功能路径、以及所述第二区域对应的服务功能路径接入信息，确定拜访地与归属地之间的服务功能路径。
在一些实施例中，所述第一SFC控制器从第二SFC控制器获取第二区域对应的服务功能路径接入信息包括：第一SFC控制器根据第二SFC控制器的接入信息向第二SFC控制器发送SFC间接入请求；第一SFC控制器接收所述第二SFC控制器返回的SFC间接入响应，其中，所述SFC间接入响应包括第二区域对应的服务功能路径接入信息。
在一些实施例中，第二SFC控制器的接入信息是第一SFC控制器从所述SFC接入请求中获取的；和/或，所述SFC间接入请求包括以下至少一项：第一SFC控制器的接入信息、第一区域对应的服务功能路径接入信息；和/或，所述SFC接入请求还包括用户设备位置、以及数据网络名称中的至少一项。
在一些实施例中，第一SMF实体从第二SMF实体获取用户设备在漫游场景下的SFC规则包括：第一SMF实体向第二SMF实体发送协议数据单元PDU会话建立请求；第一SMF实体接收第二SMF实体发送的PDU会话建立响应，其中，所述PDU会话建立响应包括用户设备在漫游场景下的SFC规则。
在一些实施例中，所述PDU会话建立请求携带第一能力标识，所述第一能力标识用于表明第一区域支持SFC功能。
在一些实施例中，所述PDU会话建立响应还包括第二SFC控制器的接入信息。
在一些实施例中，还包括：第一SMF实体将所述用户设备在第一区域的SFC规则中的流量分类信息发送至第一UPF实体，其中，所述流量分类信息用于指示第一UPF实体对所述用户设备的会话对应的数据包进行分类。
在一些实施例中，第一区域为拜访地，第二区域为归属地。
根据本公开的第二方面，提供了一种用户面流量路由配置方法，应用于漫游场景下的第二区域，所述第二区域对应于第二会话管理功能SMF实体、第二服务功能链SFC控制器、以及第二用户面功能UPF实体，所述方法包括：第二SMF实体获取用户设备在漫游场景下的SFC规则，并将所述用户设备在漫游场景下的SFC规则发送至第一SMF实体；响应于第一SFC控制器的SFC间接入请求，第二SFC控制器与第一SFC控制器协商拜访地与归属地之间的服务功能路径，并将所述拜访地与归属地之间的服务功能路径的流量引导信息发送至第二SMF实体；第二SMF实体将所述流量引导信息发送至第二UPF实体，以使第二UPF实体根据所述流量引导信息对所述用户设备的会话对应的数据包进行转发处理，其中，第一SMF实体、第一SFC控制器对应于漫游场景下的第一区域。
在一些实施例中，第二SFC控制器与第一SFC控制器协商拜访地与归属地之间的服务功能路径包括：第二SFC控制器从所述SFC间接入请求中获取第一区域对应的服务功能路径接入信息；第二SFC控制器根据第二区域对应的服务功能路径、以及所述第一区域对应的服务功能路径接入信息，确定拜访地与归属地之间的服务功能路径，其中，所述第二区域对应的服务功能路径是根据用户设备在第二区域的SFC规则确定的。
在一些实施例中，第二SFC控制器与第一SFC控制器协商拜访地与归属地之间的服务功能路径还包括：第二SFC控制器向第一SFC控制器发送SFC间接入响应，其中，所述SFC间接入响应包括第二区域对应的服务功能路径接入信息。
在一些实施例中，第二SFC控制器根据所述SFC间接入请求携带的第一SFC控制器的接入信息，向第一SFC控制器发送SFC间接入响应。
在一些实施例中，第二SMF实体获取用户设备在漫游场景下的服务功能链SFC规则包括：第二SMF实体向策略与计费功能PCF实体发送新建会话管理策略查询请求，其中，所述PCF实体对应于所述第二区域；第二SMF实体接收所述PCF实体返回的新建会话管理策略查询响应，其中，所述新建会话管理策略查询响应包括用户设备在漫游场景下的SFC规则。
在一些实施例中，还包括：在第二SMF实体获取用户设备在漫游场景下的SFC规则之前，第二SMF实体接收到第一SMF实体发送的协议数据单元PDU建立请求，其中，所述PDU会话建立请求携带第一能力标识，所述第一能力标识用于表明第一区 域支持SFC功能。
在一些实施例中，所述将所述用户设备在漫游场景下的SFC规则发送至第一SMF实体包括：第二SMF实体向第一SMF实体发送PDU会话建立响应，其中，所述PDU会话建立响应包括所述用户设备在漫游场景下的服务功能链SFC规则。
在一些实施例中，所述PDU会话建立响应还包括第二SFC控制器的接入信息。
在一些实施例中，还包括：第二SMF实体将所述用户设备在第二区域的SFC规则中的流量分类信息发送至第二UPF实体，其中，所述流量分类信息用于指示第二UPF实体对所述用户设备的会话对应的数据包进行分类。
在一些实施例中，第一区域为拜访地，第二区域为归属地。
根据本公开的第三方面，提供了一种用户面流量路由配置方法，应用于漫游场景，第一区域对应于第一会话管理功能SMF实体、第一服务功能链SFC控制器、以及第一用户面功能UPF实体，第二区域对应于第二SMF实体、第二SFC控制器、以及第二UPF实体，该方法包括：第二SMF实体获取用户设备在漫游场景下的SFC规则，并将所述用户设备在漫游场景下的SFC规则发送至第一SMF实体；第一SMF实体向第一SFC控制器发送SFC接入请求，其中，所述SFC接入请求包括所述用户设备在漫游场景下的SFC规则；第一SFC控制器在接收到所述SFC接入请求后，与第二SFC控制器协商拜访地与归属地之间的服务功能路径，并向所述第一SMF实体发送SFC接入响应，其中，所述SFC接入响应包括所述拜访地与归属地之间的服务功能路径的第一流量引导信息；第一SMF实体将所述第一流量引导信息发送至第一用户面功能UPF实体，以使第一UPF实体根据所述第一流量引导信息对所述用户设备的会话对应的数据包进行转发处理；第二SFC控制器将所述拜访地与归属地之间的服务功能路径的第二流量引导信息发送至第二SMF实体；第二SMF实体将所述第二流量引导信息发送至第二UPF实体，以使第二UPF实体根据所述第二流量引导信息对所述用户设备的会话对应的数据包进行转发处理。
根据本公开的第四方面，提供了一种用户面流量路由配置装置，应用于漫游场景下的第一区域，包括与第一区域对应的第一会话管理功能SMF实体、第一服务功能链SFC控制器、以及第一用户面功能UPF实体；第一SMF实体，被配置为从第二SMF实体获取用户设备在漫游场景下的SFC规则；第一SMF实体，还被配置为向第一SFC控制器发送SFC接入请求，其中，所述SFC接入请求包括所述用户设备在漫游场景下的SFC规则；第一SFC控制器，被配置为在接收到所述SFC接入请求后， 与第二SFC控制器协商拜访地与归属地之间的服务功能路径，并向所述第一SMF实体发送SFC接入响应，其中，所述SFC接入响应包括所述拜访地与归属地之间的服务功能路径的流量引导信息；第一SMF实体，被配置为将所述流量引导信息发送至第一UPF实体，以使第一UPF实体根据所述流量引导信息对所述用户设备的会话对应的数据包进行转发处理，其中，第二SMF实体和第二SFC控制器对应于漫游场景下的第二区域。
根据本公开的第五方面，提供了一种用户面流量路由配置装置，应用于漫游场景下的第二区域，包括与第二区域对应的第二会话管理功能SMF实体、第二服务功能链SFC控制器、以及第二用户面功能UPF实体；第二SMF实体，被配置为获取用户设备在漫游场景下的SFC规则，并将所述用户设备在漫游场景下的SFC规则发送至第一SMF实体；第二SFC控制器，被配置为响应于第一SFC控制器的SFC间接入请求，与第一SFC控制器协商拜访地与归属地之间的服务功能路径，并将所述拜访地与归属地之间的服务功能路径的流量引导信息发送至第二SMF实体；第二SMF实体，还被配置为将所述流量引导信息发送至第二UPF实体，以使第二UPF实体根据所述流量引导信息对所述用户设备的会话对应的数据包进行转发处理，其中，第一SMF实体、第一SFC控制器对应于漫游场景下的第一区域。
根据本公开的第六方面，提供了一种用户面流量路由配置系统，应用于漫游场景，包括：第一区域对应的第一会话管理功能SMF实体、第一服务功能链SFC控制器、以及第一用户面功能UPF实体，第二区域对应的第二SMF实体、第二SFC控制器、以及第二UPF实体：第二SMF实体，被配置为获取用户设备在漫游场景下的SFC规则，并将所述用户设备在漫游场景下的SFC规则发送至第一SMF实体；第一SMF实体，被配置为向第一SFC控制器发送SFC接入请求，其中，所述SFC接入请求包括所述用户设备在漫游场景下的SFC规则；第一SFC控制器，被配置为在接收到所述SFC接入请求后，与第二SFC控制器协商拜访地与归属地之间的服务功能路径，并向所述第一SMF实体发送SFC接入响应，其中，所述SFC接入响应包括所述拜访地与归属地之间的服务功能路径的第一流量引导信息；第一SMF实体，还被配置为将所述第一流量引导信息发送至第一UPF实体，以使第一UPF实体根据所述第一流量引导信息对所述用户设备的会话对应的数据包进行转发处理；第二SFC控制器，被配置为将所述拜访地与归属地之间的服务功能路径的第二流量引导信息发送至第二SMF实体；第二SMF实体，还被配置为将所述第二流量引导信息发送至第二UPF实体， 以使第二UPF实体根据所述第二流量引导信息对所述用户设备的会话对应的数据包进行转发处理。
根据本公开的第七方面，提供了一种用户面流量路由配置装置，应用于漫游场景，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上所述的用户面流量路由配置方法。
根据本公开的第八方面，提供了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如上所述的用户面流量路由配置方法。
根据本公开的第九方面，提供了一种计算机程序，包括：指令，所述指令当由处理器执行时使所述处理器执行如上所述的用户面流量路由配置方法。
通过以下参照附图对本公开的示例性实施例的详细描述，本公开的其它特征及其优点将会变得清楚。
附图说明
构成说明书的一部分的附图描述了本公开的实施例，并且连同说明书一起用于解释本公开的原理。
参照附图，根据下面的详细描述，可以更加清楚地理解本公开，其中：
图1为相关技术中5G核心网的参考网络架构示意图。
图2为根据本公开一些实施例的用户面流量路由配置方法的流程示意图。
图3为根据本公开另一些实施例的用户面流量路由配置方法的流程示意图。
图4为根据本公开再一些实施例的用户面流量路由配置方法的流程示意图。
图5为根据本公开一些实施例的用户面流量路由配置装置的结构示意图。
图6为根据本公开另一些实施例的用户面流量路由配置装置的结构示意图。
图7为根据本公开一些实施例的用户面流量路由配置系统的结构示意图。
图8为根据本公开一些实施例的用户面流量路由配置装置的结构示意图。
图9为根据本公开一些实施例的计算机系统的结构示意图。
具体实施方式
现在将参照附图来详细描述本公开的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本公开的范围。
同时，应当明白，为了便于描述，附图中所示出的各个部分的尺寸并不是按照实际的比例关系绘制的。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本公开及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为授权说明书的一部分。
在这里示出和讨论的所有示例中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它示例可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
为使本公开的目的、技术方案和优点更加清楚明白，以下结合具体实施例，并参照附图，对本公开进一步详细说明。图1为相关技术中5G核心网参考网络架构示意图。如图1所示，5G核心网参考网络架构包括多个网络功能实体(或者称为“网元”)。5G核心网实现了控制面与用户面的完全分离。控制面可以集中部署，对转发资源进行全局调度，用户面则可按需集中或分布式灵活部署。
本公开实施例主要涉及5G核心网参考网络架构中的用户设备101、用户面功能实体103、会话管理功能实体107、策略与计费功能实体111。以下对这些功能实体进行简单介绍。
用户设备101，UE(全称User Equipment)，例如用户使用的智能手机、平板电脑等终端设备。用户设备101与无线接入网络节点102形成无线接入网连接，无线接入网络节点102通过N3接口连接到用户平面功能实体103。用户设备101还通过N1接口连接到接入和移动性管理功能实体106。
用户面功能实体103，UPF(全称User Plane Function)实体，主要负责对数据包进行转发处理。
会话管理功能实体107，SMF(全称Session Management Function)实体，支持多种功能，例如支持会话建立与修改，对用户设备的IP地址进行分配管理，用户面选择与控制等。SMF实体可以通过Nsmf接口与其他核心网功能实体通信，SMF实体还可以通过N4接口连接到UPF实体。
策略与计费功能实体111，PCF(全称Policy Control function)实体，主要负责基于统一的策略框架来管理网络行为，例如，PCF向SMF实体提供策略和计费控制 (PCC，全称Policy and Charging Control)规则。
相关技术中，5G核心网的控制面与用户面均不支持服务功能链架构中的相关功能，从拜访地或归属地移动网络侧的所有出口流量都要经过相同的服务功能实体，不利于自动化、定制化、多变业务的开展。而且，相关技术中，需要采用人工方式对用户面流量经过的服务功能实体进行路由配置，路由配置所需时间长，扩展性和实时性差。
针对相关技术存在的不足，本公开的发明人想到，通过归属地与拜访地移动网络协商服务功能链策略，能够为会话粒度的用户面流量灵活、高效地配置服务功能路由，使得用户面流量在从拜访地网络或归属地网络侧流出时可以灵活选择自动编排的服务功能链，从而达到部署流量加速等服务功能时，实现拜访地与归属地网络之间的联动，使得相关业务部署开通运维更加灵活与自动化。
图2为根据本公开一些实施例的用户面流量路由配置方法的流程示意图。在本公开实施例中，第一SMF实体、第一SFC控制器、第一UPF实体对应于漫游场景下的第一区域；第二SMF实体、第二SFC控制器对应于漫游场景下的第二区域。在一些实施例中，第一区域为拜访地，第二区域为归属地。如图2所示，该方法包括以下步骤：
步骤S210：第一SMF实体从第二SMF实体获取用户设备在漫游场景下的SFC规则。
在步骤S210中，第一SMF实体主动或被动地从第二SMF实体获取用户设备在漫游场景下的SFC规则。
在一些实施例中，步骤S210包括：第一SMF实体向第二SMF实体发送协议数据单元(PDU，全称Protocol Data Unit)会话建立请求，第一SMF实体接收第二SMF实体返回地PDU会话建立响应，其中，PDU会话建立响应包括用户设备在漫游场景下的SFC规则。在一些实施例中，PDU会话建立响应还包括第二SFC控制器的接入信息。其中，第二SFC控制器的接入信息包括但不限于第二SFC控制器的IP地址、端口号、接入密钥、接入标识等信息。
在一些实施例中，PDU会话建立请求携带第一能力标识，第一能力标识用于表明第一区域支持SFC功能。在这些实施例中，第二SMF实体在接收到PDU会话建立请求后，判断该请求是否携带第一能力标识，如果该请求携带第一能力标识，执行本公开实施例中的后续处理步骤；如果该请求不携带第一能力标识，执行移动网络漫游场 景下相关的标准处理流程，比如5G网络漫游场景下相关的标准处理流程。
在另一些实施例中，步骤210包括：第一SMF实体接收第二SMF主动下发的用户设备在漫游场景下的SFC规则。
在本公开实施例中，第一SMF实体从第二SMF实体获取的用户设备在漫游场景下的SFC规则，至少包括用户设备在第一区域的SFC规则。比如，当第一区域为拜访地网络时，第一SMF实体从第二SMF实体获取的SFC规则至少包括拜访地网络的SFC规则。
在一些实施例中，漫游场景下的SFC规则包括但不限于以下内容：漫游拜访地或归属地指示、流量分类信息、以及服务功能列表。其中，漫游拜访地或归属地指示，用于表明该漫游场景下的SFC规则是拜访地的SFC规则，还是归属地的SFC规则；流量分类信息包括但不限于以下内容的一个或多个的组合：目标IP地址段、目标端口号、网络协议类型、数据包长度、数据网络名称(DNN，全称Data Network Name)、5G QoS指示器(5QI)等。其中，服务功能列表信息包括能够反映流量依次经过的服务功能序列。
在另一些实施例中，漫游场景下的SFC规则除了包括漫游拜访地或归属地指示、流量分类信息、以及服务功能列表之外，还包括流量方向标识。其中，流量方向标识为上行、下行或上下行，其表示SFC规则适用的流量为上行流量、下行流量或者上下行流量。
步骤S220：第一SMF实体向第一SFC控制器发送SFC接入请求。
第一SMF实体在获取到漫游场景下的SFC规则后，向第一SFC控制器发送携带用户设备在第一区域的SFC规则的SFC接入请求。
在一些实施例中，SFC接入请求除了包括用户设备在第一区域的SFC规则之外，还包括以下一项或多项的组合：用户设备的位置、以及数据网络名称(DNN)。通过在SFC接入请求中携带用户设备位置以及DNN等信息，便于SFC控制器选择更为合适的服务功能路径，提高服务功能路由效果。
在另一些实施例中，SFC接入请求除了包括用户设备在第一区域的SFC规则之外，还包括第二SFC控制器的接入信息。其中，第二SFC控制器的接入信息可以是第一SMF实体从第二SMF实体获取的，比如，第一SMF实体从第二SMF实体发送的PDU会话建立响应中获取第二SFC控制器的接入信息。通过在SFC接入请求中携带第二SFC控制器的接入信息，使得第一SFC控制器能够据此与第二SFC控制器快 速建立通信，进而提高服务功能路径协商效率。
步骤S230：第一SFC控制器在接收到SFC接入请求后，与第二SFC控制器协商拜访地与归属地之间的服务功能路径，并向第一SMF实体发送SFC接入响应。
在一些实施例中，第一SFC控制器与第二SFC控制器协商拜访地与归属地之间的服务功能路径包括：步骤S231至步骤S233。
步骤S231：第一SFC控制器根据用户设备在第一区域的SFC规则，设置第一区域对应的服务功能路径。
在一些实施例中，第一SFC控制器根据SFC接入请求携带的用户设备在第一区域的SFC规则选择、修改或新建相应的服务功能路径(SFP，全称Service Function Path)。
在另一些实施例中，第一SFC控制器根据SFC接入请求携带的用户设备在第一区域的SFC规则、用户设备的位置、以及数据网络名称，选择、修改或新建第一区域对应的服务功能路径。比如，第一SFC控制器根据SFC规则请求的服务功能选择能够支持上述服务功能的SFP；第一SFC控制器根据用户设备的位置选择更贴近用户设备部署的SFP；第一SFC控制器根据数据网络名称选择与该数据网络对应的SFP，以使不同数据网络的流量不共用同一个SFP。
步骤S232：第一SFC控制器从第二SFC控制器获取第二区域对应的服务功能路径接入信息。
在一些实施例中，SFC接入请求携带第二SFC控制器的接入信息。在这些实施例中，第一SFC控制器从SFC接入请求中获取第二SFC控制器的接入信息；第一SFC控制器根据第二SFC控制器的接入信息向第二SFC控制器发送SFC间接入请求；第一SFC控制器接收第二SFC控制器返回的SFC间接入响应，其中，SFC间接入响应包括第二区域对应的服务功能路径接入信息。
示例性地，SFC间接入请求包括以下至少一项：第一SFC控制器的接入信息、第一区域对应的服务功能路径接入信息。通过在SFC间接入请求中携带第一SFC控制器的接入信息，便于第二SFC控制器据此与第一SFC控制器进行通信；通过在SFC间接入请求中携带第一区域对应的服务功能路径接入信息，便于第二SFC控制器快速确定拜访地与归属地间的服务功能路径，提高了SFP协商效率。
在另一些实施例中，SFC接入请求不携带第二SFC控制器的接入信息。在这些实施例中，第一SFC控制器先查询第二SFC控制器的接入信息，再据此向第二SFC控 制器发送SFC间接入请求，并接收第二SFC控制器发送的第二区域对应的服务功能路径接入信息。
示例性地，第二区域对应的服务功能路径接入信息包括但不限于：接入IP、以及接入端口号。
步骤S233：第一SFC控制器根据第一区域对应的服务功能路径、以及所述第二区域对应的服务功能路径接入信息，确定拜访地与归属地之间的服务功能路径。
在一些实施例中，第一区域为拜访地网络，第一SFC控制器根据拜访地网络对应的服务功能路径、以及归属地网络对应的服务功能路径接入信息，确定拜访地与归属地之间的服务功能路径，具体为拜访地至归属地的服务功能路径。
在本公开实施例中，通过步骤S231至步骤S233，使得第一区域的SFP与第二区域的SFP连通，便于后续对用户设备会话对应的数据包进行服务功能路由。
在第一SFC控制器得到拜访地与归属地之间的服务功能路径之后，生成该服务功能路径的流量引导信息，并将携带该服务功能路径流量引导信息的SFC接入响应发送给第一SMF实体。此外，在一些实施例，SFC接入响应还包括协商成功指示符，以用于表明漫游场景下的两方网络协商拜访地与归属地之间的服务功能路径成功。
在一些实施例中，SFP的流量引导信息包括网络服务头(NSH，全称Network Service Header)。NSH是为服务链设计的封装格式。NSH包括基本头部字段、服务功能路径标识)等字段。
在另一些实施例中，SFP的流量引导信息除了包括NSH之外，还可包括以下内容中的一个或多个的组合：传输层协议类型、网络层协议类型、服务功能路径的接入IP地址、服务功能路径的接入端口号等。
步骤S240：第一SMF实体将流量引导信息发送至第一UPF实体，以使第一UPF实体根据流量引导信息对用户设备的会话对应的数据包进行转发处理。
在一些实施例中，第一SMF实体向第一UPF实体发送会话修改请求。比如，在5G核心网中，第一SMF实体通过N4接口向第一UPF实体发送会话修改请求。其中，会话修改请求包括通过步骤210至步骤230确定的服务功能路径的流量引导信息，该流量引导信息用于指示第一UPF实体将用户面会话对应的数据包转发至相应的服务功能路径。当用户设备有上行流量发出时，第一UPF实体基于流量引导信息对不同数据包进行封装，比如，在原来数据包基础上增加NSH，并进行传输层与网络层封装，然后将封装后的数据包转发至一条或多条SFP。
在另一些实施例中，第一SMF实体向第一UPF实体发送的会话修改请求，除了包括通过步骤210至步骤230确定的服务功能路径的流量引导信息之外，还包括用户设备在第一区域的SFC规则参数，比如用户设备在第一区域的SFC规则中的流量分类信息，该流量分类信息用于指示第一UPF实体对会话对应的数据包进行分类。当用户设备有上行流量发出时，第一UPF实体根据SFC规则中的流量分类信息对会话对应的数据包进行分类，基于流量引导信息对不同数据包进行封装，比如，在原来数据包基础上增加NSH，并进行传输层与网络层封装，然后将封装后的数据包转发至一条或多条SFP。
在本公开实施例中，通过第一SMF实体从第二SMF实体获取用户设备在漫游场景下的SFC规则，向第一SFC控制器发送携带该SFC规则的SFC接入请求，第一SFC控制器在接收到SFC接入请求后，与第二SFC控制器协商拜访地与归属地之间的服务功能路径，并向第一SMF实体发送该服务功能路径的流量引导信息，以使第一SMF实体对第一UPF实体进行会话配置这些步骤，能够针对漫游场景为会话粒度的用户面流量灵活、高效地配置服务功能路由，使得用户面流量在从漫游的第一区域流出时可以灵活选择自动编排的服务功能链，从而达到部署流量加速等服务功能时，实现拜访地与归属地网络之间的联动，使得相关业务部署开通运维更加灵活与自动化。同时，由于能够根据用户的定制化需求，按需提供服务，在一定程度上可以减少高端服务软硬件设置的投资建设，使得本公开实施例的方法，在5G或6G等网络场景下，有较好的国内跨省回归属、国际应用前景。
图3为根据本公开另一些实施例的用户面流量路由配置方法的流程示意图。在本公开实施例中，第二SMF实体、第二SFC控制器、第二UPF实体、以及策略与计费功能(PCF)实体与漫游场景下的第二区域对应，第一SMF实体、第一SFC控制器与漫游场景下的第一区域对应。在一些实施例中，第一区域为拜访地，第二区域为归属地。
如图3所示，该方法包括以下步骤：
步骤S310：第二SMF实体获取用户设备在漫游场景下的SFC规则，并将所述用户设备在漫游场景下的SFC规则发送至第一SMF实体。
在步骤S310中，第二SMF实体主动，或者响应于第一SMF实体的请求，向第一SMF实体下发获取的用户设备在漫游场景下的SFC规则。
在一些实施例中，第二SMF实体在接收到第一SMF实体发送的协议数据单元 (PDU)会话建立请求后，从PCF实体获取用户设备在漫游场景下的SFC规则，然后将用户设备在漫游场景下的SFC规则携带在PDU会话建立响应中，发送给第一SMF实体。在一些实施例，PDU会话建立响应还包括第二SFC控制器的接入信息、以及第一区域侧的接口隧道信息，比如5G网络下拜访地侧的N9接口隧道信息。通过在PDU会话建立响应中携带第二SFC控制器的接入信息，便于第一SFC控制器与第二SFC控制器快速建立通信，进而提高服务功能路径协商效率。
其中，第二SMF实体可通过如下示例性地方式从PCF实体获取用户设备在漫游场景下的SFC规则：第二SMF实体向PCF实体发送新建会话管理策略查询请求；第二SMF实体接收该PCF实体返回的新建会话管理策略查询响应，其中，该新建会话管理策略查询响应包括用户设备在漫游场景下的SFC规则。
在另一些实施例中，第二SMF实体在接收到PDU会话建立请求后，先判断该请求是否携带第一能力标识，如果该请求携带第一能力标识，执行本公开实施例中的后续处理步骤；如果该请求不携带第一能力标识，执行移动网络漫游场景下相关的标准处理流程，比如5G网络漫游场景下相关的标准处理流程。其中，第一能力标识用于表明第一区域支持SFC功能。通过判断PDU会话建立请求中是否携带第一能力标识，能够避免在第一区域不支持SFC功能的情况下进行后续的SFC规则获取等不必要的操作，优化漫游场景下服务功能路由配置流程。
其中，第二SMF实体获取的用户设备在漫游场景下的SFC规则包括用户设备在第一区域的SFC规则、以及用户设备在第二区域的SFC规则，第二SMF实体至少将用户设备在第一区域的SFC规则发送给第一SMF实体。
步骤S320：响应于第一SFC控制器的SFC间接入请求，第二SFC控制器与第一SFC控制器协商拜访地与归属地之间的服务功能路径，并将服务功能路径的流量引导信息发送至第二SMF实体。
在一些实施例中，第二SFC控制器与第一SFC控制器协商拜访地与归属地之间的服务功能路径包括：第二SFC控制器从SFC间接入请求中获取第一区域对应的服务功能路径接入信息；第二SFC控制器根据第二区域对应的服务功能路径、以及第一区域对应的服务功能路径接入信息，确定拜访地与归属地之间的服务功能路径。
其中，第一区域对应的服务功能路径接入信息包括但不限于以下信息：第一区域对应的服务功能路径的接入IP、以及接入端口号。
其中，第二区域对应的服务功能路径是第二SFC控制器在接收到SFC间接入请 求之前，预先根据用户设备在第二区域的SFC规则确定的；或者，在接收到SFC间接入请求之后，由第二SFC控制器根据用户设备在第二区域的SFC规则确定的。
在一些实施例中，在步骤S320之后，还包括：第二SFC控制器向第一SFC控制器发送SFC间接入响应。示例性地，第二SFC控制器根据SFC间接入请求携带的第一SFC控制器的接入信息，向第一SFC控制器发送SFC间接入响应。
其中，SFC间接入响应包括第二区域对应的服务功能路径接入信息，包括但不限于以下信息：第二区域对应的服务功能路径的接入IP、以及接入端口号。
步骤S330：第二SMF实体将流量引导信息发送至第二UPF实体，以使第二UPF实体根据流量引导信息对用户设备的会话对应的数据包进行转发处理。
在一些实施例中，第二SMF实体向第二UPF实体发送会话修改请求。比如，在5G核心网中，第二SMF实体通过N4接口向第二UPF实体发送会话修改请求。其中，会话修改请求包括通过步骤310至步骤320确定的服务功能路径的流量引导信息，该流量引导信息用于指示第二UPF实体将用户面会话对应的数据包转发至相应的服务功能路径。当用户设备有上行流量发出时，第二UPF实体基于流量引导信息对不同数据包进行封装，比如，在原来数据包基础上增加NSH，并进行传输层与网络层封装，然后将封装后的数据包转发至一条或多条SFP。
在另一些实施例中，第二SMF实体向第二UPF实体发送的会话修改请求，除了包括通过步骤310至步骤320确定的服务功能路径的流量引导信息之外，还包括用户设备在第二区域的SFC规则参数，比如用户设备在第二区域的SFC规则中的流量分类信息，该流量分类信息用于指示第二UPF实体对会话对应的数据包进行分类。当接收到下行流量后，第二UPF实体根据流量分类信息对会话对应的数据包进行分类，基于流量引导信息对不同数据包进行封装，比如，在原来数据包基础上增加NSH，并进行传输层与网络层封装，然后将封装后的数据包转发至一条或多条SFP。
在本公开实施例中，通过以上步骤能够针对漫游场景为会话粒度的用户面流量灵活、高效地配置服务功能路由，使得用户面流量在从漫游的第二区域流出时可以灵活选择自动编排的服务功能链，从而达到部署流量加速等服务功能时，实现拜访地与归属地网络之间的联动，使得相关业务部署开通运维更加灵活与自动化。同时，由于能够根据用户的定制化需求，按需提供服务，在一定程度上可以减少高端服务软硬件设置的投资建设，使得本公开实施例的方法，在5G或6G等网络场景下，有较好的国内跨省回归属、国际应用前景。
图4为根据本公开再一些实施例的用户面流量路由配置方法的流程示意图。在本公开实施例中，漫游场景下的第一区域对应于第一会话管理功能SMF实体、第一服务功能链SFC控制器、以及第一用户面功能UPF实体，漫游场景下的第二区域对应于第二SMF实体、第二SFC控制器、以及第二UPF实体。在一些实施例中，第一区域为拜访地，第二区域为归属地。如图4所示，该方法包括：
步骤401：第一SMF实体向第二SMF实体发送PDU会话建立请求。
当用户设备移动到第一区域移动网络时，第一区域网络中的相关网元决定该用户设备会话适用漫游模式。在为用户设备在漫游场景下的第一区域创建会话时，执行本公开实施例的方法。比如，当用户设备移动到拜访地5G网络时，拜访地的接入与移动性管理功能实体决定该用户设备会话使用Home-routed漫游方式，这种漫游方式是指漫游用户通过归属网络的网关H-PGW接入获取归属网络提供的业务。在为该用户设备在拜访地创建会话时，执行本公开实施例的方法。
在一些实施例中，PDU会话建立请求携带第一能力标识，所述第一能力标识用于表明第一区域支持SFC功能。此外，PDU会话建立请求还可携带拜访地侧N9接口隧道信息(CN Tunnel Info)等。
在一些实施例中，在步骤401之前，还包括：第一SMF实体向第一UPF实体发送会话建立请求，第一UPF实体向第一SMF实体返回会话建立响应。比如，在5G网络中，第一SMF实体向第一UPF实体发送N4会话建立请求，第一UPF实体向第一SMF实体返回N4会话建立响应。其中，该响应中携带会话基本信息，比如CN Tunnel Info。
步骤402：第二SMF实体向PCF实体发送新建会话管理策略查询请求。
步骤403：PCF实体向第二SMF实体返回新建会话管理策略查询响应。
在本公开实施例中，PCF实体与漫游场景下的第二区域对应，其存储有用户设备的策略与计费(PCC)规则。如果该用户设备的PCC规则包含一条或多条用户设备在漫游场景的SFC规则(即漫游SFC规则)，则在接收到第二SMF实体的新建会话管理策略查询请求后，将用户设备的漫游SFC规则携带在新建会话管理策略查询响应中，发送给第二SMF实体。
在一些实施例中，如果用户设备的漫游SFC规则中既包括默认的漫游SFC规则，又包括动态的漫游SFC规则，优先以动态的漫游SFC规则为准。
在另一些实施例中，如果用户设备的漫游SFC规则中既包括默认的漫游SFC规 则，又包括动态的漫游SFC规则，需要根据一个或多个因素综合判断是以默认的漫游SFC规则为准，还是以动态的漫游SFC规则为准。
在一些实施例中，用户设备在漫游场景下的SFC规则包括但不限于以下内容：漫游拜访地或归属地指示、流量分类信息、以及服务功能列表。其中，漫游拜访地或归属地指示，用于表明该漫游场景下的SFC规则是拜访地的SFC规则，还是归属地的SFC规则；流量分类信息包括但不限于以下内容的一个或多个的组合：目标IP地址段、目标端口号、网络协议类型、数据包长度、数据网络名称(DNN)、5G QoS指示器(5QI)等。其中，服务功能列表信息包括能够反映流量依次经过的服务功能序列。
在另一些实施例中，用户设备在漫游场景下的SFC规则除了包括漫游拜访地或归属地指示、流量分类信息、以及服务功能列表之外，还包括流量方向标识。其中，流量方向标识为上行、下行或上下行，其表示SFC规则适用的流量为上行流量、下行流量或者上下行流量。
步骤404：第二SMF实体向第二SFC控制器发送SFC接入请求。
在一些实施例中，第二SMF实体从PCF实体获取的用户设备在漫游场景的SFC规则包括：用户设备在第一区域的SFC规则、用户设备在第二区域的SFC规则。其中，用户设备在第一区域的SFC规则与用户设备在第二区域的SFC规则可以为相同的SFC规则，也可为不同的SFC规则。
第二SMF实体在获取到漫游场景下的SFC规则后，向第二SFC控制器发送SFC接入请求，该SFC接入请求携带用户设备在第二区域的SFC规则。
在一些实施例中，该SFC接入请求除了包括用户设备在第二区域的SFC规则之外，还包括以下一项或多项的组合：用户设备的位置、以及数据网络名称(DNN)。通过在SFC接入请求中携带用户设备位置以及DNN等信息，便于第二SFC控制器选择更为合适的服务功能路径，提高服务功能路由效果。
步骤405：第二SFC控制器设置SFP。
示例性地，SFC控制器根据SFC接入请求携带的SFC规则，以及，用户设备的位置和数据网络名称中的一项或多项，选择、修改或新建第二区域对应的服务功能路径(SFP)。
步骤406：第二SFC控制器向第二SMF实体返回SFC接入响应。
其中，第二SFC控制器发送的SFC接入响应包括第二区域对应的SFP的流量引导信息。
示例性地，第二区域对应的SFP的流量引导信息包括：网络服务头(NSH)。NSH是为服务链设计的封装格式。NSH包括基本头部字段、服务功能路径标识)等字段。此外，该流量引导信息还可包括以下一个或多个的组合：传输层协议类型、网络层协议类型、服务功能路径的接入IP地址、服务功能路径的接入端口号等。
在一些实施例，SFC接入响应还包括第二SFC控制器的接入信息。其中，第二SFC控制器的接入信息包括但不限于第二SFC控制器的接入IP、接入端口号、接入密钥、接入标识等。
步骤407：第二SMF实体向第二UPF实体发送会话建立请求。
示例性地，在5G网络中，第二SMF实体向第二UPF实体发送N4会话建立请求。
在一些实施例中，该会话建立请求包括第二区域对应的SFP中的流量分类信息、以及第二区域对应的SFP的流量引导信息。当第二UPF实体接收到该用户设备的下行流量时，根据第二区域对应的SFP中的流量分类信息，对下行流量中的数据包进行分类；根据第二区域对应的SFP的流量引导信息对不同分类的数据包进行封装、转发处理。
在一些实施例中，在步骤407之前，还包括：第二SMF实体根据SFC功能支持情况、SFP位置信息等因素中的一个或多个，从第二区域对应的多个UPF实体中选出第二UPF实体。
步骤408：第二UPF实体向第二SMF实体返回会话建立响应。
示例性地，在5G网络中，第二UPF实体向第二SMF实体返回N4会话建立响应。
步骤409：第二SMF实体向第一SMF实体返回PDU会话建立响应。
其中，PDU会话建立响应包括用户设备在第一区域的SFC规则。在一些实施例，PDU会话建立响应还包括第二SFC控制器的接入信息。
步骤410：第一SMF实体向第一SFC控制器发送SFC接入请求。
在一些实施例中，该SFC接入请求包括用户设备在第一区域的SFC规则、以及第二SFC控制器的接入信息。在一些实施例中，该SFC接入请求还可包括用户设备的位置、以及DNN等信息。
步骤411：第一SFC控制器设置SFP。
在一些实施例中，第一SFC控制器根据用户设备在第一区域的SFC规则等信息， 设置第一区域对应的SFP。
步骤412：第一SFC控制器向第二SFC控制器发送SFC间接入请求。
在一些实施例中，SFC间接入请求包括第一区域对应的服务功能路径接入信息。通过在SFC间接入请求中携带第一区域对应的服务功能路径接入信息，便于第二SFC控制器快速确定拜访地与归属地间的服务功能路径，提高了SFP协商效率。
在另一些实施例中，SFC间接入请求还包括第一SFC控制器的接入信息。通过在SFC间接入请求中携带第一SFC控制器的接入信息，便于第二SFC控制器据此与第一SFC控制器进行通信。
步骤413：第二SFC控制器向第二SMF实体发送更新后的SFP流量引导信息。
在一些实施例中，第二SFC控制器在接收到SFC间接入请求后，从SFC间接入请求中获取第一区域对应的服务功能路径接入信息，根据第一区域对应的服务功能路径接入信息，以及预先设置的第二区域的服务功能路径，确定拜访地与归属地之间的服务功能路径，然后，生成拜访地与归属地之间的服务功能路径的第二流量引导信息，即第二区域至第一区域的SFP的流量引导信息，即更新后的SFP流量引导信息，再将更新后的SFP流量引导信息发送至第二SMF实体。
在另一些实施例中，SFC间接入请求并不携带第一区域对应的服务功能路径接入信息。在这些实施例中，第二SFC控制器通过主动查询第一SFC控制器获取第一区域对应的服务功能路径接入信息。
步骤414：第二SFC控制器向第一SFC控制器返回SFC间接入响应。
示例性地，SFC间接入响应包括第二区域对应的服务功能路径接入信息。
在本公开实施例中，对步骤413和步骤414的执行顺序不做限定。比如，可先执行步骤413，再执行步骤414；或者，先执行步骤414，再执行步骤413；又或者，两者同时执行。在不影响本公开实施例实施的情况下，本领域技术人员还可对其他步骤的执行顺序进行调整。
步骤415：第一SFC控制器向第一SMF实体返回SFC接入响应。
其中，该SFC接入响应包括拜访地与归属地间的SFP的流量引导信息，具体为第一区域至第二区域的SFP的流量引导信息。例如，当第一区域为拜访地时，该SFC接入响应包括拜访地至归属地的SFP的流量引导信息。
步骤416：第一SMF实体向第一UPF实体发送会话修改请求。
示例性地，该会话修改请求包括拜访地与归属地之间的服务功能路径的第一流量 引导信息，即第一区域至第二区域的SFP的流量引导信息、用户设备在第一区域的SFC规则中的流量分类信息。此外，在一些实施例，该会话修改请求还包括基站隧道信息、归属地隧道信息、拜访地隧道信息等。
步骤417：第一UPF实体向第一SMF实体返回会话修改响应。
第一UPF实体基于会话修改请求携带的第一区域至第二区域的SFP的流量引导信息、用户设备在第一区域的SFC规则中的流量分类信息等修改用户面会话。比如，在5G网络中，第一UPF实体基于会话修改请求携带的信息修改N9接口会话。当用户设备有上行流量发出时，第一UPF实体根据SFC规则中的流量分类信息对会话对应的数据包进行分类，基于流量引导信息对不同数据包进行封装，比如，在原来数据包基础上增加NSH，并进行传输层与网络层封装，然后将封装后的数据包转发至一条或多条SFP。
步骤418：第二SMF实体向第二UPF实体发送会话修改请求。
在步骤413之后，第二SMF实体向第二UPF实体发送会话修改请求，其中，会话修改请求携带更新后的SFP流量引导信息。此时，用户设备来自第二区域的下行流量以及下行缓存流量可进入第一区域。比如，当第一区域为拜访地、第二区域为归属地时，用户设备来自归属地的下行流量可进入拜访地网络，进而发送至基站与用户设备。
步骤419：第二UPF实体向第二SMF实体返回会话修改响应。
在本公开实施例中，通过以上步骤能够针对漫游场景为会话粒度的用户面流量灵活、高效地配置服务功能路由，使得用户面流量在从漫游拜访地或归属地流出时可以灵活选择自动编排的服务功能链，从而达到部署流量加速等服务功能时，实现拜访地与归属地网络之间的联动，使得相关业务部署、开通、运维更加灵活与自动化。同时，由于能够根据用户的定制化需求，按需提供服务，在一定程度上可以减少高端服务软硬件设置的投资建设，使得本公开实施例的方法，在5G或6G等网络场景下，有较好的国内跨省回归属、国际应用前景。
图5为根据本公开一些实施例的用户面流量路由配置装置的结构示意图。本公开实施例的用户面流量路由配置装置应用于漫游场景下的第一区域，包括与第一区域对应的第一SMF实体510、第一SFC控制器520、以及第一UPF实体530。
第一SMF实体510，被配置为从第二SMF实体获取用户设备在漫游场景下的SFC规则。
第一SMF实体510，还被配置为向第一SFC控制器520发送SFC接入请求，其中，所述SFC接入请求包括所述用户设备在漫游场景下的SFC规则。
第一SFC控制器520，被配置为在接收到所述SFC接入请求后，与第二SFC控制器协商拜访地与归属地之间的服务功能路径，并向所述第一SMF实体发送SFC接入响应。
其中，所述SFC接入响应包括所述拜访地与归属地之间的服务功能路径的流量引导信息。
第一SMF实体510，还被配置为将所述流量引导信息发送至第一UPF实体530，以使第一UPF实体530根据所述流量引导信息对所述用户设备的会话对应的数据包进行转发处理。其中，第二SMF实体和第二SFC控制器对应于第二区域。
在本公开实施例中，通过以上装置能够针对漫游场景为会话粒度的用户面流量灵活、高效地配置服务功能路由，使得用户面流量在从漫游的第一区域流出时可以灵活选择自动编排的服务功能链，从而达到部署流量加速等服务功能时，实现拜访地与归属地网络之间的联动，使得相关业务部署、开通、运维更加灵活与自动化。同时，由于能够根据用户的定制化需求，按需提供服务，在一定程度上可以减少高端服务软硬件设置的投资建设，使得本公开实施例的方法，在5G或6G等网络场景下，有较好的国内跨省回归属、国际应用前景。
图6为根据本公开另一些实施例的用户面流量路由配置装置的结构示意图。本公开实施例的用户面流量路由配置装置应用于漫游场景下的第二区域，包括与第二区域对应的第二会SMF实体610、第二SFC控制器620、以及第二UPF实体630。
第二SMF实体610，被配置为获取用户设备在漫游场景下的SFC规则，并将所述用户设备在漫游场景下的SFC规则发送至第一SMF实体。
第二SFC控制器620，被配置为响应于第一SFC控制器的SFC间接入请求，与第一SFC控制器协商拜访地与归属地之间的服务功能路径，并将所述拜访地与归属地之间的服务功能路径的流量引导信息发送至第二SMF实体610。
第二SMF实体610，还被配置为将所述流量引导信息发送至第二UPF实体630，以使第二UPF实体630根据所述流量引导信息对所述用户设备的会话对应的数据包进行转发处理，其中，第一SMF实体、第一SFC控制器对应于漫游场景下的第一区域。
在本公开实施例中，通过以上装置能够针对漫游场景为会话粒度的用户面流量灵 活、高效地配置服务功能路由，使得用户面流量在从漫游的第二区域流出时可以灵活选择自动编排的服务功能链，从而达到部署流量加速等服务功能时，实现拜访地与归属地网络之间的联动，使得相关业务部署、开通、运维更加灵活与自动化。同时，由于能够根据用户的定制化需求，按需提供服务，在一定程度上可以减少高端服务软硬件设置的投资建设，使得本公开实施例的方法，在5G或6G等网络场景下，有较好的国内跨省回归属、国际应用前景。
图7为根据本公开一些实施例的用户面流量路由配置系统的结构示意图。本公开实施例以移动网络为5G网络为例进行说明。如图7所示，该系统包括：与拜访地5G网络对应的第一会话管理功能实体710、第一服务功能链控制器720、以及第一用户面功能实体730，与归属地5G网络对应的第二会话管理功能实体740、策略与计费功能实体750、第二服务功能链控制器760、第二用户面功能实体770。
第二会话管理功能实体740，被配置为获取用户设备在漫游场景下的SFC规则，并将所述用户设备在漫游场景下的SFC规则发送至第一会话管理功能实体710。
在一些实施例中，第二会话管理功能实体740在接收到第一会话管理功能实体710发送的协议数据单元(PDU)会话建立请求后，从策略与计费功能实体750获取用户设备在漫游场景下的SFC规则，然后将用户设备在漫游场景下的SFC规则携带在PDU会话建立响应中，发送给第一会话管理功能实体710。在一些实施例，PDU会话建立响应还包括第二服务功能链控制器760的接入信息、以及第一区域侧的接口隧道信息，比如5G网络下拜访地侧的N9接口隧道信息。
第一会话管理功能实体710，被配置为向第一服务功能链控制器720发送SFC接入请求。其中，所述SFC接入请求包括用户设备在漫游场景下的SFC规则。
在一些实施例中，该SFC接入请求包括用户设备在拜访地的SFC规则、以及第二服务功能链控制器的接入信息。在一些实施例，该SFC接入请求还可包括用户设备的位置、以及DNN等信息。
第一服务功能链控制器720，被配置为在接收到所述SFC接入请求后，与第二服务功能链控制器760协商拜访地与归属地之间的服务功能路径，并向第一会话管理功能实体710发送SFC接入响应。其中，所述SFC接入响应包括第一流量引导信息，即拜访地至归属地的SFP的流量引导信息。
第一会话管理功能实体710，还被配置为将所述第一流量引导信息发送至第一用户面功能实体730，以使第一户面功能实体730根据第一流量引导信息对用户设备的 会话对应的数据包进行转发处理。
在一些实施例中，第一会话管理功能实体710，还被配置为将所述用户设备在拜访地的SFC规则中的流量分类信息发送至第一用户面功能实体730，其中，所述流量分类信息用于指示第一用户面功能实体730对所述用户设备的会话对应的数据包进行分类。
第二服务功能链控制器760，被配置为将第二流量引导信息发送至第二会话管理功能实体740。在本公开实施例中，第二流量引导信息为归属地至拜访地的SFP的流量引导信息。
第二会话管理功能实体740，还被配置为将所述第二流量引导信息发送至第二用户面功能实体770，以使第二用户面功能实体770根据所述第二流量引导信息对所述用户设备的会话对应的数据包进行转发处理。
在一些实施例中，第二会话管理功能实体740，还被配置为将所述用户设备在归属地的SFC规则中的流量分类信息发送至第二用户面功能实体770，其中，所述流量分类信息用于指示第二用户面功能实体770对所述用户设备的会话对应的数据包进行分类。
在本公开实施例中，通过以上系统能够针对漫游场景，为会话粒度的用户面流量灵活、高效地配置服务功能路由，使得用户面流量在从漫游拜访地或归属地流出时可以灵活选择自动编排的服务功能链，从而达到部署流量加速等服务功能时，实现拜访地与归属地网络之间的联动，使得相关业务部署、开通、运维更加灵活与自动化。同时，由于能够根据用户的定制化需求，按需提供服务，在一定程度上可以减少高端服务软硬件设置的投资建设，使得本公开实施例的有较好的国内跨省回归属、国际应用前景。需要指出的是，本公开实施例是以5G网络为例进行说明，但这并不意味着本公开的系统仅能用于5G网络。除了5G网络之外，本公开的系统还能适用于6G网络等应用场景。
图8是示出根据本公开另一些实施例的用户面流量路由配置装置的框图。
如图8所示，用户面流量路由配置装置800包括存储器810；以及耦接至该存储器810的处理器820。存储器810用于存储执行用户面流量路由配置方法对应实施例的指令。处理器820被配置为基于存储在存储器810中的指令，执行本公开中任意一些实施例中的用户面流量路由配置方法。
图9是示出用于实现本公开一些实施例的计算机系统的框图。
如图9所示，计算机系统900可以通用计算设备的形式表现。计算机系统900包括存储器910、处理器920和连接不同系统组件的总线930。
存储器910例如可以包括系统存储器、非易失性存储介质等。系统存储器例如存储有操作系统、应用程序、引导装载程序(Boot Loader)以及其他程序等。系统存储器可以包括易失性存储介质，例如随机存取存储器(RAM)和/或高速缓存存储器。非易失性存储介质例如存储有执行用户面流量路由配置方法中的至少一种的对应实施例的指令。非易失性存储介质包括但不限于磁盘存储器、光学存储器、闪存等。
处理器920可以用通用处理器、数字信号处理器(DSP)、应用专用集成电路(ASIC)、现场可编程门阵列(FPGA)或其它可编程逻辑设备、分立门或晶体管等分立硬件组件方式来实现。相应地，诸如判断模块和确定模块的每个模块，可以通过中央处理器(CPU)运行存储器中执行相应步骤的指令来实现，也可以通过执行相应步骤的专用电路来实现。
总线930可以使用多种总线结构中的任意总线结构。例如，总线结构包括但不限于工业标准体系结构(ISA)总线、微通道体系结构(MCA)总线、外围组件互连(PCI)总线。
计算机系统900还可以包括输入输出接口940、网络接口950、存储接口960等。这些接口940、950、960以及存储器910和处理器920之间可以通过总线930连接。输入输出接口940可以为显示器、鼠标、键盘等输入输出设备提供连接接口。网络接口950为各种联网设备提供连接接口。存储接口960为软盘、U盘、SD卡等外部存储设备提供连接接口。
这里，参照根据本公开实施例的方法、装置和计算机程序产品的流程图和/或框图描述了本公开的各个方面。应当理解，流程图和/或框图的每个框以及各框的组合，都可以由计算机可读程序指令实现。
这些计算机可读程序指令可提供到通用计算机、专用计算机或其他可编程装置的处理器，以产生一个机器，使得通过处理器执行指令产生实现在流程图和/或框图中一个或多个框中指定的功能的装置。
这些计算机可读程序指令也可存储在计算机可读存储器中，这些指令使得计算机以特定方式工作，从而产生一个制造品，包括实现在流程图和/或框图中一个或多个框中指定的功能的指令。
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。
通过上述实施例中的用户面流量路由配置方法和装置，能够为会话粒度的用户面流量灵活、高效地配置服务功能路由，使得用户面流量从移动网络侧流出时可以灵活选择自动编排的服务功能链，满足网络融合趋势下的各种定制化需求。
至此，已经详细描述了根据本公开的用户面流量路由配置方法和装置。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。

Claims (26)

  1. 一种用户面流量路由配置方法，应用于漫游场景下的第一区域，所述第一区域对应于第一会话管理功能SMF实体、第一服务功能链SFC控制器、以及第一用户面功能UPF实体，所述方法包括：
    第一SMF实体从第二SMF实体获取用户设备在漫游场景下的SFC规则；
    第一SMF实体向第一SFC控制器发送SFC接入请求，其中，所述SFC接入请求包括所述用户设备在漫游场景下的SFC规则；
    第一SFC控制器在接收到所述SFC接入请求后，与第二SFC控制器协商拜访地与归属地之间的服务功能路径，并向所述第一SMF实体发送SFC接入响应，其中，所述SFC接入响应包括所述拜访地与归属地之间的服务功能路径的流量引导信息；
    第一SMF实体将所述流量引导信息发送至第一UPF实体，以使第一UPF实体根据所述流量引导信息对所述用户设备的会话对应的数据包进行转发处理，其中，第二SMF实体和第二SFC控制器对应于漫游场景下的第二区域。
  2. 根据权利要求1所述的用户面流量路由配置方法，其中，所述用户设备在漫游场景下的SFC规则包括用户设备在第一区域的SFC规则，所述与第二SFC控制器协商拜访地与归属地之间的服务功能路径包括：
    第一SFC控制器根据用户设备在第一区域的SFC规则，设置第一区域对应的服务功能路径；
    第一SFC控制器从第二SFC控制器获取第二区域对应的服务功能路径接入信息；
    第一SFC控制器根据第一区域对应的服务功能路径、以及所述第二区域对应的服务功能路径接入信息，确定拜访地与归属地之间的服务功能路径。
  3. 根据权利要求2所述的用户面流量路由配置方法，其中，所述第一SFC控制器从第二SFC控制器获取第二区域对应的服务功能路径接入信息包括：
    第一SFC控制器根据第二SFC控制器的接入信息向第二SFC控制器发送SFC间接入请求；
    第一SFC控制器接收所述第二SFC控制器返回的SFC间接入响应，其中，所述SFC间接入响应包括第二区域对应的服务功能路径接入信息。
  4. 根据权利要求3所述的用户面流量路由配置方法，其中：
    第二SFC控制器的接入信息是第一SFC控制器从所述SFC接入请求中获取的；和/或，
    所述SFC间接入请求包括以下至少一项：第一SFC控制器的接入信息、第一区域对应的服务功能路径接入信息；和/或，
    所述SFC接入请求还包括用户设备位置、以及数据网络名称中的至少一项。
  5. 根据权利要求1所述的用户面流量路由配置方法，其中，第一SMF实体从第二SMF实体获取用户设备在漫游场景下的SFC规则包括：
    第一SMF实体向第二SMF实体发送协议数据单元PDU会话建立请求；
    第一SMF实体接收第二SMF实体发送的PDU会话建立响应，其中，所述PDU会话建立响应包括用户设备在漫游场景下的SFC规则。
  6. 根据权利要求5所述的用户面流量路由配置方法，其中，所述PDU会话建立请求携带第一能力标识，所述第一能力标识用于表明第一区域支持SFC功能。
  7. 根据权利要求5所述的用户面流量路由配置方法，其中，所述PDU会话建立响应还包括第二SFC控制器的接入信息。
  8. 根据权利要求1至7任一所述的用户面流量路由配置方法，还包括：
    第一SMF实体将所述用户设备在第一区域的SFC规则中的流量分类信息发送至第一UPF实体，其中，所述流量分类信息用于指示第一UPF实体对所述用户设备的会话对应的数据包进行分类。
  9. 根据权利要求1至7任一所述的用户面流量路由配置方法，其中，第一区域为拜访地，第二区域为归属地。
  10. 一种用户面流量路由配置方法，应用于漫游场景下的第二区域，所述第二区域对应于第二会话管理功能SMF实体、第二服务功能链SFC控制器、以及第二用户 面功能UPF实体，所述方法包括：
    第二SMF实体获取用户设备在漫游场景下的SFC规则，并将所述用户设备在漫游场景下的SFC规则发送至第一SMF实体；
    响应于第一SFC控制器的SFC间接入请求，第二SFC控制器与第一SFC控制器协商拜访地与归属地之间的服务功能路径，并将所述拜访地与归属地之间的服务功能路径的流量引导信息发送至第二SMF实体；
    第二SMF实体将所述流量引导信息发送至第二UPF实体，以使第二UPF实体根据所述流量引导信息对所述用户设备的会话对应的数据包进行转发处理，其中，第一SMF实体、第一SFC控制器对应于漫游场景下的第一区域。
  11. 根据权利要求10所述的用户面流量路由配置方法，其中，第二SFC控制器与第一SFC控制器协商拜访地与归属地之间的服务功能路径包括：
    第二SFC控制器从所述SFC间接入请求中获取第一区域对应的服务功能路径接入信息；
    第二SFC控制器根据第二区域对应的服务功能路径、以及所述第一区域对应的服务功能路径接入信息，确定拜访地与归属地之间的服务功能路径，其中，所述第二区域对应的服务功能路径是根据用户设备在第二区域的SFC规则确定的。
  12. 根据权利要求11所述的用户面流量路由配置方法，其中，第二SFC控制器与第一SFC控制器协商拜访地与归属地之间的服务功能路径还包括：
    第二SFC控制器向第一SFC控制器发送SFC间接入响应，其中，所述SFC间接入响应包括第二区域对应的服务功能路径接入信息。
  13. 根据权利要求12所述的用户面流量路由配置方法，其中，第二SFC控制器根据所述SFC间接入请求携带的第一SFC控制器的接入信息，向第一SFC控制器发送SFC间接入响应。
  14. 根据权利要求10所述的用户面流量路由配置方法，其中，第二SMF实体获取用户设备在漫游场景下的服务功能链SFC规则包括：
    第二SMF实体向策略与计费功能PCF实体发送新建会话管理策略查询请求，其 中，所述PCF实体对应于所述第二区域；
    第二SMF实体接收所述PCF实体返回的新建会话管理策略查询响应，其中，所述新建会话管理策略查询响应包括用户设备在漫游场景下的SFC规则。
  15. 根据权利要求10至14任一所述的用户面流量路由配置方法，还包括：
    在第二SMF实体获取用户设备在漫游场景下的SFC规则之前，第二SMF实体接收到第一SMF实体发送的协议数据单元PDU建立请求，其中，所述PDU会话建立请求携带第一能力标识，所述第一能力标识用于表明第一区域支持SFC功能。
  16. 根据权利要求15所述的用户面流量路由配置方法，其中，所述将所述用户设备在漫游场景下的SFC规则发送至第一SMF实体包括：第二SMF实体向第一SMF实体发送PDU会话建立响应，其中，所述PDU会话建立响应包括所述用户设备在漫游场景下的服务功能链SFC规则。
  17. 根据权利要求16所述的用户面流量路由配置方法，其中，所述PDU会话建立响应还包括第二SFC控制器的接入信息。
  18. 根据权利要求10至14任一所述的用户面流量路由配置方法，还包括：
    第二SMF实体将所述用户设备在第二区域的SFC规则中的流量分类信息发送至第二UPF实体，其中，所述流量分类信息用于指示第二UPF实体对所述用户设备的会话对应的数据包进行分类。
  19. 根据权利要求10至14任一所述的用户面流量路由配置方法，其中，第一区域为拜访地，第二区域为归属地。
  20. 一种用户面流量路由配置方法，应用于漫游场景，第一区域对应于第一会话管理功能SMF实体、第一服务功能链SFC控制器、以及第一用户面功能UPF实体，第二区域对应于第二SMF实体、第二SFC控制器、以及第二UPF实体，该方法包括：
    第二SMF实体获取用户设备在漫游场景下的SFC规则，并将所述用户设备在漫 游场景下的SFC规则发送至第一SMF实体；
    第一SMF实体向第一SFC控制器发送SFC接入请求，其中，所述SFC接入请求包括所述用户设备在漫游场景下的SFC规则；
    第一SFC控制器在接收到所述SFC接入请求后，与第二SFC控制器协商拜访地与归属地之间的服务功能路径，并向所述第一SMF实体发送SFC接入响应，其中，所述SFC接入响应包括所述拜访地与归属地之间的服务功能路径的第一流量引导信息；
    第一SMF实体将所述第一流量引导信息发送至第一用户面功能UPF实体，以使第一UPF实体根据所述第一流量引导信息对所述用户设备的会话对应的数据包进行转发处理；
    第二SFC控制器将所述拜访地与归属地之间的服务功能路径的第二流量引导信息发送至第二SMF实体；
    第二SMF实体将所述第二流量引导信息发送至第二UPF实体，以使第二UPF实体根据所述第二流量引导信息对所述用户设备的会话对应的数据包进行转发处理。
  21. 一种用户面流量路由配置装置，应用于漫游场景下的第一区域，包括与第一区域对应的第一会话管理功能SMF实体、第一服务功能链SFC控制器、以及第一用户面功能UPF实体；
    第一SMF实体，被配置为从第二SMF实体获取用户设备在漫游场景下的SFC规则；
    第一SMF实体，还被配置为向第一SFC控制器发送SFC接入请求，其中，所述SFC接入请求包括所述用户设备在漫游场景下的SFC规则；
    第一SFC控制器，被配置为在接收到所述SFC接入请求后，与第二SFC控制器协商拜访地与归属地之间的服务功能路径，并向所述第一SMF实体发送SFC接入响应，其中，所述SFC接入响应包括所述拜访地与归属地之间的服务功能路径的流量引导信息；
    第一SMF实体，被配置为将所述流量引导信息发送至第一UPF实体，以使第一UPF实体根据所述流量引导信息对所述用户设备的会话对应的数据包进行转发处理，其中，第二SMF实体和第二SFC控制器对应于漫游场景下的第二区域。
  22. 一种用户面流量路由配置装置，应用于漫游场景下的第二区域，包括与第二区域对应的第二会话管理功能SMF实体、第二服务功能链SFC控制器、以及第二用户面功能UPF实体；
    第二SMF实体，被配置为获取用户设备在漫游场景下的SFC规则，并将所述用户设备在漫游场景下的SFC规则发送至第一SMF实体；
    第二SFC控制器，被配置为响应于第一SFC控制器的SFC间接入请求，与第一SFC控制器协商拜访地与归属地之间的服务功能路径，并将所述拜访地与归属地之间的服务功能路径的流量引导信息发送至第二SMF实体；
    第二SMF实体，还被配置为将所述流量引导信息发送至第二UPF实体，以使第二UPF实体根据所述流量引导信息对所述用户设备的会话对应的数据包进行转发处理，其中，第一SMF实体、第一SFC控制器对应于漫游场景下的第一区域。
  23. 一种用户面流量路由配置系统，应用于漫游场景，包括：第一区域对应的第一会话管理功能SMF实体、第一服务功能链SFC控制器、以及第一用户面功能UPF实体，第二区域对应的第二SMF实体、第二SFC控制器、以及第二UPF实体：
    第二SMF实体，被配置为获取用户设备在漫游场景下的SFC规则，并将所述用户设备在漫游场景下的SFC规则发送至第一SMF实体；
    第一SMF实体，被配置为向第一SFC控制器发送SFC接入请求，其中，所述SFC接入请求包括所述用户设备在漫游场景下的SFC规则；
    第一SFC控制器，被配置为在接收到所述SFC接入请求后，与第二SFC控制器协商拜访地与归属地之间的服务功能路径，并向所述第一SMF实体发送SFC接入响应，其中，所述SFC接入响应包括所述拜访地与归属地之间的服务功能路径的第一流量引导信息；
    第一SMF实体，还被配置为将所述第一流量引导信息发送至第一UPF实体，以使第一UPF实体根据所述第一流量引导信息对所述用户设备的会话对应的数据包进行转发处理；
    第二SFC控制器，被配置为将所述拜访地与归属地之间的服务功能路径的第二流量引导信息发送至第二SMF实体；
    第二SMF实体，还被配置为将所述第二流量引导信息发送至第二UPF实体，以使第二UPF实体根据所述第二流量引导信息对所述用户设备的会话对应的数据包进 行转发处理。
  24. 一种用户面流量路由配置装置，应用于漫游场景，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20中任一项所述的用户面流量路由配置方法。
  25. 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20中任一项所述的用户面流量路由配置方法。
  26. 一种计算机程序，包括：
    指令，所述指令当由处理器执行时使所述处理器执行根据权利要求1-20中任一项所述的用户面流量路由配置方法。
PCT/CN2022/124262 2022-03-25 2022-10-10 用户面流量路由配置方法、装置和系统 WO2023178988A1 (zh)

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