CN113613279A

CN113613279A - Routing strategy generation method and related equipment

Info

Publication number: CN113613279A
Application number: CN202110902407.3A
Authority: CN
Inventors: 谢沛荣; 陈洁; 李文苡; 曹磊; 王敏
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2021-11-05

Abstract

The disclosure provides a routing strategy generation method and related equipment, and relates to the technical field of computers. The method is applied to an access and mobility management function (AMF), and comprises the following steps: sending a signing data query request to a Unified Data Management (UDM); receiving user subscription data returned by the UDM in response to the subscription data query request; the user subscription data comprises VN group data to which the user belongs; sending VN group data to a policy control function PCF to enable the PCF to generate a UE routing policy URSP according to the VN group data; and receiving the URSP returned by the PCF. The method can realize that the PCF automatically generates the URSP strategy for the VN group users, thereby greatly reducing the difficulty of developing and maintaining 5G LAN services.

Description

Routing strategy generation method and related equipment

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a routing policy generation method, an access and mobility management function, a policy control function, and a computer-readable storage medium.

Background

The 5G LAN function supports that data packets between terminals directly carry out local interaction through UPF without being forwarded by a large network, thereby effectively reducing transmission delay and saving transmission resources.

In the related art, the virtual network vn (virtual network) group subscription information in the current 5G LAN is stored in a unified Data repository udr (unified Data repository) of a unified Data management udm (unified Data manager). The standards in the related art make the following provisions: when a user registers, the access and Mobility Management function amf (access and Mobility Management function) obtains the VN group identity from the UDM and then passes this information to the policy Control function pcf (policy Control function). And then the PCF accesses the UDR according to the VN group identification, automatically generates a URSP (UE Routing Selection policy) strategy of the group user according to the detailed information (mainly an application descriptor) of the VN group, and issues the UE for execution, so that the UE can load the proper service into the 5G LAN according to the URSP.

With the development and evolution of the 5G technology, the related technology has the following defects:

in practical product implementation, the UDM and the PCF respectively have their own UDR, and the PCF cannot dynamically acquire VN group information from the UDR of the UDM, so in practical application, the PCF cannot automatically generate a URSP policy for a group user using the above-mentioned related technology, and the URSP policy can only be manually configured and maintained, which makes development and maintenance of 5G LAN services very difficult.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Content of application

The present disclosure is directed to provide a routing policy generation method, an access and mobility management function, a policy control function, and a computer readable storage medium, so as to solve the problem that the PCF cannot automatically generate a URSP policy of a group user, which results in difficulty in developing and maintaining a 5G LAN service.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows, or in part will be obvious from the description, or may be learned by practice of the disclosure.

According to an aspect of the present disclosure, there is provided a routing policy generation method, performed by an access and mobility management function, AMF, the method including: sending a signing data query request to a Unified Data Management (UDM); receiving user subscription data returned by the UDM in response to the subscription data query request; the user subscription data comprises VN group data to which the user belongs; sending VN group data to a policy control function PCF to enable the PCF to generate a UE routing policy URSP according to the VN group data; and receiving the URSP returned by the PCF.

In one embodiment of the present disclosure, after receiving the URSP returned by the PCF, the method further includes: and transmitting the URSP to the user terminal so that the user terminal establishes a session by applying a URSP strategy and accesses the group service.

In an embodiment of the present disclosure, before sending the subscription data query request to the unified data management UDM, the method further includes: receiving a registration request sent by a user through a user terminal, and responding to the registration request to authenticate the user; and after the user authentication is successful, generating a signing data query request.

In an embodiment of the present disclosure, before receiving a registration request sent by a user through a user terminal, the method further includes: pre-configuring VN group information corresponding to a user in a unified data repository UDR of the UDM through a network open function NEF; wherein the VN group information includes: a VN group identifier, a VN group member and a VN group data; the VN group data includes: protocol data unit PDU session type, data network name DNN, single network slice selection assistance information S-NSSAI and application descriptor.

In one embodiment of the present disclosure, sending VN group data to a policy control function PCF includes: and sending a policy association establishment request to the PCF, wherein the policy association establishment request comprises the VN group data.

In one embodiment of the present disclosure, after sending the policy association establishment request to the PCF, the method further includes: and receiving a strategy association establishment response corresponding to the strategy association establishment request returned by the PCF.

In one embodiment of the present disclosure, the VN group data includes: 5G LAN group data; and issuing the URSP to the user terminal to enable the user terminal to establish a session by applying the URSP policy, and accessing the group service, wherein the method comprises the following steps: and transmitting the URSP to the user terminal so that the user terminal initiates session establishment by applying the URSP strategy, and further enabling the user terminal to access the 5G LAN after the session establishment is successful.

According to another aspect of the present disclosure, there is provided a routing policy generation method performed by a policy control function PCF, the method comprising: receiving VN group data sent by an access and mobility management function (AMF); the VN group data in the AMF is returned to the AMF by the unified data management UDM in response to a signing data query request, and the signing data query request is generated by the AMF in response to a registration request sent by a user; and dynamically generating a UE routing strategy URSP for the user according to the VN group data.

In an embodiment of the present disclosure, after generating the UE routing policy URSP, the method further includes: and sending the URSP strategy to the AMF so that the AMF sends the URSP strategy to the user terminal.

In an embodiment of the present disclosure, receiving VN group data sent by an access and mobility management function AMF includes: receiving a policy association establishment request sent by an AMF, wherein the policy association establishment request comprises VN group data; and after receiving the policy association establishment request sent by the AMF, the method further comprises the following steps: and responding to the policy association establishment request, and returning a corresponding policy association establishment response to the AMF.

In one embodiment of the present disclosure, the VN group data includes: 5G LAN group data; and sending the URSP policy to the AMF so that the AMF sends the URSP policy to the user terminal, further comprising: and sending the URSP strategy to the AMF so that the AMF sends the URSP strategy to the user terminal, and the user terminal accesses the 5G LAN by applying the URSP strategy.

According to yet another aspect of the present disclosure, there is provided an access and mobility management function, AMF, comprising: a processor; and a memory for storing executable instructions for the processor; wherein the processor is configured to perform the above-described routing policy generation method performed by the AMF via execution of executable instructions.

According to yet another aspect of the present disclosure, there is provided a policy control function PCF comprising: a processor; and a memory for storing executable instructions for the processor; wherein the processor is configured to perform the above-described routing policy generation method performed by the PCF via execution of executable instructions.

In still another aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored, the computer program, when executed by a processor, implementing the above-described routing policy generation method.

The routing strategy generation method provided by the embodiment of the disclosure can acquire VN group data information from the UDM by the AMF during user registration, then inform the PCF of the VN group data information, and the PCF automatically generates the URSP strategy for the user and issues and executes the URSP strategy.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 shows a flow chart of a routing policy generation method of one embodiment of the present disclosure;

FIG. 2 illustrates a flow diagram of a routing policy generation method of one embodiment of the present disclosure;

FIG. 3 illustrates a flow diagram of a routing policy generation method of one embodiment of the present disclosure;

FIG. 4 is an interaction diagram illustrating a routing policy generation method according to an embodiment of the present disclosure;

fig. 5 shows a block diagram of an access and mobility management function in an embodiment of the present disclosure; and the combination of (a) and (b),

FIG. 6 shows a block diagram of a policy control function in an embodiment of the disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.

In view of the above technical problems in the related art, an embodiment of the present disclosure provides a routing policy generation method, so as to solve at least one or all of the above technical problems.

Hereinafter, each step of the routing policy generation method in the exemplary embodiment of the present disclosure will be described in more detail with reference to the drawings and the embodiments.

Fig. 1 shows a flow chart of a routing policy generation method according to an embodiment of the present disclosure, which may be performed by an access and mobility management function AMF; as shown in fig. 1, a method for generating a routing policy provided by an embodiment of the present disclosure may include the following steps:

step S101, sending a signing data query request to a Unified Data Management (UDM);

step S103, receiving user subscription data returned by the UDM in response to the subscription data query request; the user subscription data comprises VN group data to which the user belongs;

step S105, sending VN group data to a policy control function PCF, so that the PCF generates a UE routing policy URSP according to the VN group data;

step S107, receiving URSP returned by PCF.

According to the routing policy generation method provided by the application, the AMF can be used for acquiring the VN group data of the VN group to which the user belongs while inquiring the user subscription information from the UDR of the UDM, and then the AMF can be used for sending the VN group data to the PCF, and then the PCF automatically generates the UE routing policy URSP according to the received VN group data, so that the problem that the PCF cannot dynamically acquire the VN group data from the UDR of the UDM to generate the URSP policy in the current industry in product realization can be solved. Namely: the method and the system can utilize the AMF to directly send the VN group data used for generating the URSP strategy to the PCF, so that the PCF does not need to access the UDR of the UDM any more, but can directly generate the URSP strategy according to the VN group data sent by the AMF. By using the routing strategy generation method provided by the application, the automatic generation of the routing strategy can be realized, and the difficulty in developing and maintaining the service is further reduced.

Further, in some embodiments, after receiving the URSP returned by the PCF, the AMF may also send the URSP to the user terminal, so that the user terminal applies the URSP policy to establish a session and access the group service.

The PCF can automatically generate a URSP strategy for the user according to the VN group data and return the URSP strategy to the AMF, and the URSP strategy is issued to the user terminal by using the AMF, so that the terminal can execute the strategy to guide the related service of the user to access the group.

In some embodiments, before sending the subscription data query request to the unified data management UDM, the method further comprises: receiving a registration request sent by a user through a user terminal, and responding to the registration request to authenticate the user; and after the user authentication is successful, generating a signing data query request.

The registration request may be generated when the terminal of the user is powered on or the user initiates a 5G LAN service.

The AMF and AUSF (Authentication Server Function) can cooperate to complete the operation of user Authentication, and the user is authenticated in response to the registration request of the user first and then is generated into a subscription data query request after the Authentication is successful, so that the data security can be increased and the service reliability can be improved.

In some embodiments, before receiving a registration request sent by a user through a user terminal, the method further includes: pre-configuring VN group information corresponding to a user in a unified data repository UDR of the UDM through a network open function NEF; wherein the VN group information includes: a VN group identifier, a VN group member and a VN group data; the VN group data includes: protocol data unit PDU session type, data network name DNN, single network slice selection assistance information S-NSSAI and application descriptor.

The VN group information may be 5G LAN group information. The configuration mode may be as follows: and directly configuring VN group information in the UDM/UDR through a network management system. According to the 3GPP standard, the VN group information may specifically include: the specific format of the VN group identity, the VN group member information, the VN group data (including PDU session type, DNN, slice identity, application descriptor and secondary authentication/authorization related information) can be found in the relevant 3GPP standard definition. The configuration mode may be as follows: VN group information is written into the UDR of the UDM by an AF (Application Function) through a NEF (Network Exposure Function).

Specifically, the PDU session type may be IPv4, IPv6, IPv4/v6 dual stack or non-IP type; the DNN may be used to identify the network (e.g., the internet, or some private corporate network) to which access is made; the S-NSSAI may be used to identify an identification of the access network slice, and the application descriptor may be used to specify the specific application that needs to access the 5G network using the PDU session type, DNN, and slice identification specified above.

In some embodiments, sending the VN group information to the policy control function PCF includes: and sending a policy association establishment request to the PCF, wherein the policy association establishment request comprises the VN group information. Further, in some embodiments, after sending the policy association establishment request to the PCF, the method further includes: and receiving a strategy association establishment response corresponding to the strategy association establishment request returned by the PCF.

The AMF can inform the PCF of the VN group data in a mode of sending a policy association establishing request to the PCF and simultaneously carrying the VN group data of the VN group to which the user belongs in the policy association establishing request, so that the PCF can automatically generate a URSP policy according to the VN group data in the subsequent steps. Accordingly, after receiving the policy association establishment request, the PCF may return a corresponding response message to the AMF, so as to ensure communication reliability.

In some embodiments, the VN group data includes: 5G LAN group data; and issuing the URSP to the user terminal to enable the user terminal to establish a session by applying the URSP policy, and accessing the group service, wherein the method comprises the following steps: and transmitting the URSP to the user terminal so that the user terminal initiates session establishment by applying the URSP strategy, and further enabling the user terminal to access the 5G LAN after the session establishment is successful.

When the 5G LAN group data is included in the VN group data, a URSP policy related to access to the 5G LAN service may be generated, transmitted to the terminal, and then executed by the terminal to implement access to the 5G LAN.

Fig. 2 shows a flow chart of a routing policy generation method according to an embodiment of the present disclosure, which may be performed by an access and mobility management function AMF; as shown in fig. 2, the method for generating a routing policy includes:

step S201, receiving a registration request initiated by a user through a user terminal;

step S203, responding to the registration request, and matching with the AUSF function to complete the user authentication operation;

step S205, sending a signing data query request to the unified data management UDM;

step S207, receiving user subscription data returned by the UDM in response to the subscription data query request, wherein the subscription data comprises VN group data information of a VN group to which a user belongs;

step S209, sending a policy association establishment request to a policy control function PCF, wherein the policy association establishment request comprises VN group data information;

step S211, receiving the strategy association establishment response returned by the PCF, and receiving the UE routing strategy URSP generated by the PCF according to the VN group data information;

step S213, the URSP strategy is sent to the user terminal, so that the terminal applies the URSP strategy to establish a session and access the group service.

Fig. 3 illustrates a flow chart of a routing policy generation method of one embodiment of the present disclosure, which may be performed by a policy control function PCF; as shown in fig. 3, the method for generating a routing policy provided by the embodiment of the present disclosure may include the following steps:

step S301, receiving VN group data sent by an access and mobility management function AMF; the VN group data is returned to the AMF by the unified data management UDM in response to a signing data query request, and the signing data query request is generated by the AMF in response to a registration request sent by a user;

step S303, dynamically generating a UE routing strategy URSP for the user according to the VN group data.

By the routing policy generation method provided by this embodiment, the PCF can directly generate the URSP policy according to the VN group data sent by the access and mobility management function AMF, thereby avoiding the problem in the related art that the PCF cannot access the UDR of the UDM to dynamically acquire the VN group data to generate the URSP policy, achieving automatic generation of the routing policy, and reducing difficulty in service development and maintenance.

In some embodiments, after generating the UE routing policy URSP, the method further includes: and sending the URSP strategy to the AMF so that the AMF sends the URSP strategy to the user terminal.

In some embodiments, receiving VN group data sent by an access and mobility management function AMF includes: receiving a policy association establishment request sent by an AMF, wherein the policy association establishment request comprises VN group data; and after receiving the policy association establishment request sent by the AMF, the method further comprises the following steps: and responding to the policy association establishment request, and returning a corresponding policy association establishment response to the AMF.

In some embodiments, the VN group data includes: 5G LAN group data; and sending the URSP policy to the AMF so that the AMF sends the URSP policy to the user terminal, further comprising: and sending the URSP strategy to the AMF so that the AMF sends the URSP strategy to the user terminal, and the user terminal accesses the 5G LAN by applying the URSP strategy.

Fig. 4 is a schematic diagram illustrating a routing policy generation method according to an embodiment of the present disclosure, and as shown in fig. 4, the method includes:

step S401, pre-configuring 5G LAN group information on the UDM/UDR through a network manager;

step S403, the user in the 5G group initiates registration, the AMF and the AUSF are matched to finish user authentication operation, and then the AMF inquires about the UDM and obtains the subscription data of the user, wherein the subscription data comprises the VN group information to which the user belongs;

step S405, AMF sends a request for establishing policy association to PCF, wherein the request comprises VN group data information;

step S407, PCF returns strategy association establishment response to AMF;

step S409, PCF dynamically generates URSP strategy for the user according to the received VN group data information;

step S411, PCF sends updated URSP to terminal through AMF;

step S413, the terminal applies the latest URSP policy;

step S415, the user initiates session establishment according to the URSP strategy, and accesses the 5G LAN.

By the routing strategy generation method provided by the application, the AMF can acquire VN group data information from the UDM during user registration, and then the VN group data information is informed to the PCF, and the PCF automatically generates a URSP strategy for the user and issues the URSP strategy for execution; the method can realize that PCF automatically generates URSP strategy for VN group users, solves the problem that PCF can not automatically generate URSP strategy for VN group users in current 5G LAN service, and greatly reduces difficulty of developing and maintaining 5G LAN service.

It is to be noted that the above-mentioned figures are only schematic illustrations of the processes involved in the method according to exemplary embodiments of the present application and are not intended to be limiting. It will be readily understood that the processes shown in the above figures are not intended to indicate or limit the chronological order of the processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, e.g., in multiple modules.

Fig. 5 is a block diagram illustrating an access and mobility management function AMF in an embodiment of the present disclosure, and as shown in fig. 5, an access and mobility management function 500 provided in an embodiment of the present disclosure may include:

one or more processors 501; a memory 503 configured to store one or more programs which, when executed by the one or more processors 501, cause the one or more processors 501 to implement any of the routing policy generation methods performed by the access and mobility management function AMF as described above.

Among them, the procedure can be specifically used for: sending a signing data query request to a Unified Data Management (UDM); receiving user subscription data returned by the UDM in response to the subscription data query request; the user subscription data comprises VN group data to which the user belongs; sending VN group data to a policy control function PCF to enable the PCF to generate a UE routing policy URSP according to the VN group data; and receiving the URSP returned by the PCF.

Referring to fig. 5, the program may further include: a subscription data querying module 5031, a data receiving module 5032, a group data sending module 5033 and a policy receiving module 5034. In the disclosed embodiment, the query subscription data module 5031 may be configured to send a subscription data query request to the unified data management UDM; the receive data module 5032 may be configured to receive user subscription data returned by the UDM in response to the subscription data query request; the user subscription data comprises VN group data to which the user belongs; the group data sending module 5033 may be configured to send the VN group data to the policy control function PCF, so that the PCF generates a UE routing policy URSP according to the VN group data; the receive policy module 5034 may be configured to receive the URSP returned by the PCF.

Fig. 6 shows a block diagram of a policy control function PCF in an embodiment of the present disclosure, and as shown in fig. 6, a policy control function PCF600 provided in an embodiment of the present disclosure may include:

one or more processors 601; a memory 603 configured to store one or more programs that, when executed by the one or more processors 601, cause the one or more processors 601 to implement a routing policy generation method performed by a policy control function PCF as any one of the above.

Among them, the procedure can be specifically used for: receiving VN group data sent by an access and mobility management function (AMF); the VN group data in the AMF is returned to the AMF by the unified data management UDM in response to a signing data query request, and the signing data query request is generated by the AMF in response to a registration request sent by a user; and dynamically generating a UE routing strategy URSP for the user according to the VN group data.

Referring to fig. 6, the program may further include: a receive group data module 6031 and a generate policy module 6032. In this embodiment of the present disclosure, the group data receiving module 6031 may be configured to receive VN group data sent by the access and mobility management function AMF; the VN group data is returned to the AMF by the unified data management UDM in response to a signing data query request, and the signing data query request is generated by the AMF in response to a registration request sent by a user; the generate policy module 6032 may be configured to dynamically generate a UE routing policy, URSP, for the user according to the VN group data.

It should be noted that, referring to fig. 5 and fig. 6, there are shown schematic structural diagrams of an access and mobility management function 500 and a policy control function 600 which are suitable for implementing the embodiment of the present application. The configuration shown in fig. 5 and 6 is only an example, and should not bring any limitation to the function and the range of use of the embodiment of the present application.

Referring to fig. 5 and 6, the access and mobility management function 500 and the policy control function 600 provided in the embodiment of the present disclosure may further include: a communication interface (502, 602) and a communication bus (504, 604).

Wherein the processor (501, 601), the communication interface (502, 602) and the memory (503, 603) are communicated with each other through the communication bus (504, 604).

Optionally, the communication interface (502, 602) may be an interface of a communication module, such as an interface of a GSM (Global System for Mobile communications) module. The processors (501, 601) are used for executing programs. The memories (503, 603) store programs. The program may comprise a computer program comprising computer operating instructions.

The processor (501, 601) may be a central processing unit CPU, or an application Specific Integrated circuit asic, or one or more Integrated circuits configured to implement embodiments of the present disclosure.

The memories (503, 603) may comprise a Random Access Memory (RAM) memory, and may also comprise a non-volatile memory (e.g., at least one disk memory).

In particular, the processes described below with reference to the flowcharts may be implemented as computer software programs, according to embodiments of the present disclosure. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable storage medium, the computer program containing program code for performing the method illustrated by the flow chart.

It should be noted that the computer readable storage medium shown in the present disclosure may be a computer readable signal medium or a computer readable storage medium or any combination of the two.

As another aspect, the present application also provides a computer-readable storage medium, which may be embodied in an electronic device; or may exist separately without being assembled into the electronic device. The computer-readable storage medium carries one or more programs which, when executed by an electronic device, cause the electronic device to implement the method as described in the above embodiments.

According to the program product for implementing the method, the portable compact disc read only memory (CD-ROM) can be adopted and comprises program codes, and the program product can be operated on terminal equipment, such as a personal computer. However, the program product of the present application is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

A computer readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).

It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.

Moreover, although the steps of the methods of the present disclosure are depicted in the drawings in a particular order, this does not require or imply that the steps must be performed in this particular order, or that all of the depicted steps must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc.

Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.

Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A method for generating a routing policy, the method being performed by an access and mobility management function (AMF), and comprising:

sending a signing data query request to a Unified Data Management (UDM);

receiving user subscription data returned by the UDM in response to the subscription data query request; the user subscription data comprises VN group data to which a user belongs;

sending the VN group data to a Policy Control Function (PCF) so that the PCF generates a UE routing policy (URSP) according to the VN group data;

and receiving the URSP returned by the PCF.

2. The method of claim 1, further comprising: after receiving the URSP returned by the PCF, the method further comprises:

and transmitting the URSP to a user terminal so that the user terminal establishes a session by applying a URSP strategy and accesses a group service.

3. The method of claim 2, prior to sending the subscription data query request to the unified data management UDM, further comprising:

receiving a registration request sent by a user through a user terminal, and responding to the registration request to authenticate the user; and the number of the first and second groups,

and after the user authentication is successful, generating the subscription data inquiry request.

4. The method of claim 3, prior to receiving the registration request sent by the user through the user terminal, further comprising:

pre-configuring VN group information corresponding to the user in a Unified Data Repository (UDR) of the UDM through a network open function (NEF); wherein the VN group information includes: a VN group identifier, a VN group member, and the VN group data; the VN group data comprises: protocol data unit PDU session type, data network name DNN, single network slice selection assistance information S-NSSAI and application descriptor.

5. The method of claim 1, wherein sending the VN group data to a policy control function PCF comprises:

and sending a policy association establishment request to the PCF, wherein the policy association establishment request comprises the VN group data.

6. The method of claim 5, after sending a policy association establishment request to the PCF, further comprising:

and receiving a policy association establishment response corresponding to the policy association establishment request returned by the PCF.

7. The method according to claim 4, wherein the VN group data comprises: 5G LAN group data; and the number of the first and second groups,

issuing the URSP to a user terminal so that the user terminal establishes a session by applying a URSP policy and accesses a group service, wherein the method comprises the following steps:

and issuing the URSP to a user terminal so that the user terminal initiates session establishment by applying a URSP strategy, and further accessing the user terminal to a 5G LAN after the session establishment is successful.

8. A method for generating a routing policy, the method being performed by a policy control function PCF and comprising:

receiving VN group data sent by an access and mobility management function (AMF); wherein VN group data in the AMF is returned to the AMF by a Unified Data Management (UDM) in response to a subscription data query request generated by the AMF in response to a registration request sent by a user;

and dynamically generating a UE routing strategy URSP for the user according to the VN group data.

9. The method of claim 8, wherein after generating the UE routing policy, URSP, further comprises:

and sending the URSP strategy to the AMF so that the AMF sends the URSP strategy to the user terminal.

10. The method according to claim 8, wherein receiving VN group data sent by an access and mobility management function, AMF, comprises:

receiving a policy association establishment request sent by the AMF, wherein the policy association establishment request comprises the VN group data; and the number of the first and second groups,

after receiving the policy association establishment request sent by the AMF, the method further includes: and responding to the policy association establishment request, and returning a corresponding policy association establishment response to the AMF.

11. The method according to claim 9, wherein the VN group data comprises: 5G LAN group data; and the number of the first and second groups,

sending the URSP policy to the AMF so that the AMF sends the URSP policy to the user terminal, and the method further comprises the following steps:

and sending the URSP strategy to the AMF so that the AMF sends the URSP strategy to the user terminal, and the user terminal accesses the 5G LAN by applying the URSP strategy.

12. An access and mobility management function, AMF, comprising:

one or more processors;

storage means for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement the routing policy generation method according to any one of claims 1 to 7.

13. A policy control function PCF comprising:

one or more processors;

storage means for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement the routing policy generation method according to any one of claims 8 to 11.

14. A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, implements the method of any of claims 1 to 7 or the method of any of claims 8 to 11.