Protocol data unit session management method and device, and computer readable storage medium

Abstract

The present invention relates to a protocol data unit (PDU) session management method performed by a (5G) core network device, comprising: receiving a PDU session setup request from a user equipment (UE), in particular via a base station, where the PDU session setup request comprises a user identifier identifying a particular user; obtaining user archive information corresponding to the user identifier; qoS parameters and / or policy parameters of the PDU session are determined by taking into account the user profile information. The invention also relates to a PDU session management method executed by the user equipment and the base station. The present invention also relates to a 5G core network device, a user equipment and a base station suitable for performing the method for PDU session management, and to a computer readable storage medium.

Description

Technical Field

[0001] This invention relates to a method, apparatus, and computer-readable storage medium for managing protocol data unit sessions. Background Technology

[0002] In existing technologies, to establish a Protocol Data Unit (PDU) session, a User Equipment (UE), for example via a gNB in ​​a 5G system, sends a PDU session establishment request, including information about the UE, to the Access and Mobility Function (AMF) of the core network. The AMF sends Session Management (SM) content to the Session Management Function (SMF). The SMF sends a Subscription Data Request to the User Data Management (UDM).

[0003] The UDM determines whether the UE is authorized, obtains the UE's subscription data (e.g., the UE's quality of service parameters) from the UDM or the Policy Control Function (PCF), and sends this information to the SMF.

[0004] Then, the SMF sends a response to the SM content creation message to the AMF, selects a User Plane Function (UPF) to establish a PDU session, and establishes an N4 session between the UPF and the SMF. The SMF then sends a PDU session establishment accept message to the AMF. The AMF sends this accept message to the UE via the gNB, enabling the UE to send PDUs. Summary of the Invention

[0005] The present invention aims to provide a PDU session management method and device to better meet the needs of individual users.

[0006] This objective is achieved by the features of the method as described in claims 1, 8 and 9, the features of the apparatus as described in claims 10, 11 and 12, and the computer-readable storage medium as described in claims 13 to 15. Attached Figure Description

[0007] Figure 1 A method flowchart according to an embodiment of the present disclosure is shown. Detailed Implementation

[0008] The PDU session management method of the present invention, executed by core network equipment, particularly 5G core network equipment, includes the following steps: The user equipment (UE) receives a PDU session establishment request, specifically via a base station, wherein the PDU session establishment request includes a user identifier that identifies a specific user. Obtain the user profile information corresponding to the user identifier. By taking into account the user profile information, the Quality of Service (QoS) parameters and / or policy parameters of the PDU session are determined.

[0009] Therefore, compared to existing technologies, user profile information is obtained based on user identifiers rather than solely on user devices. This allows for better adaptation to the needs of individual users. For example, when different users use the same user device, user-specific configurations, such as routing information and quality of service configurations, can be tailored to each user individually.

[0010] In a preferred embodiment, obtaining the subscription data corresponding to the user identifier includes: Retrieve the user profile information corresponding to the user identifier from the user identity profile of the specific user previously stored in the core network equipment. The user identity profile is stored in the unified data management (UDM) or unified data repository (UDR) entity of the core network device. Optionally, the user profile information includes the device associated with the user, credential service quality parameters, and / or policy parameters.

[0011] In addition to user identifier information about the user's (or their) device, the user profile may also include associated security credentials, user-specific QoS settings, routing information, etc.

[0012] More preferably, obtaining the user profile information corresponding to the user identifier includes: Determine whether the user identifier in the received PDU session establishment request is active and / or authorized. If the result is positive, obtain the user profile information corresponding to the user identifier, or Determine whether the user identifier is an active identifier stored in association with the UE that sent the PDU session establishment request, or whether it is associated with the user equipment's Subscription Permanent Identifier (SUPI). If the result is positive, obtain the user profile information corresponding to the user identifier.

[0013] Furthermore, preferably, receiving a PDU session establishment request includes: The Access and Mobility Function (AMF) entity of the core network receives the PDU session establishment request from the UE via the base station. The AMF sends a Session Management (SM) content creation request to the Session Management Function (SMF) entity of the core network, wherein the Session Management Content Creation Request includes a user identifier. The SMF sends a subscription data request to the UDM to obtain the user profile information. Receiving a PDU session establishment request may also include the following optional steps: The AMF generates a Session Management (SM) content creation request that includes the user identifier.

[0014] More preferably, the method includes the following additional steps: A PDU session establishment accept message is sent to the UE, specifically via the base station. Preferably, obtaining the user profile information corresponding to the user identifier further includes: The UDM sends the user profile information corresponding to the user identifier to the SMF.

[0015] More preferably, establishing a PDU session based on user profile information corresponding to the user identifier includes: The SMF sends a response to the AMF requesting the creation of SM content. The SMF selects the User Plane Function (UPF) entity of the core network for the PDU session. An N4 session is established between the SMF and the UPF.

[0016] More preferably, sending a PDU session establishment accept message to the UE (via the base station) includes: The SMF sends an N1N2 message transfer, which includes the PDU session establishment acceptance message, to the AMF. The AMF (via the base station) sends the PDU session establishment accept message to the UE.

[0017] The present invention also relates to a PDU session management method performed by a user equipment, comprising the following method steps: Specifically, the PDU session establishment request, including the user identifier, is sent to the core network via the base station. Specifically, the PDU session establishment acceptance message for the UE is received via the base station.

[0018] The present invention also includes a PDU session management method performed by a base station, the method comprising the following steps: Receive a PDU session establishment request that includes a user identifier that identifies a specific user. Send the PDU session establishment request to the core network. Receive PDU session establishment accept message from the core network. (via the base station) Receive PDU session establishment accept message for the UE.

[0019] Furthermore, the present invention relates to 5G core network equipment suitable for performing the above-described PDU session management method.

[0020] The present invention also relates to user equipment suitable for performing the above-described PDU session management method.

[0021] The present invention also relates to a base station suitable for performing the above-described PDU session management method.

[0022] The present invention also relates to a computer-readable storage medium comprising instructions that, when executed by a computer, cause the computer to perform the method as described on the side of a 5G core network device. The computer is part of the 5G core network device.

[0023] The present invention also relates to a computer-readable storage medium comprising instructions that, when executed by a computer, cause the computer to perform the method as described on the side of a 5G user equipment. The computer is part of the 5G user equipment.

[0024] The present invention also relates to a computer-readable storage medium comprising instructions that, when executed by a computer, cause the computer to perform the methods disclosed at a 5G base station. The computer is part of the 5G base station.

[0025] Preferred embodiments of the present invention will now be described in conjunction with the accompanying drawings.

[0026] This diagram illustrates the establishment of a PDU session based on a user identifier.

[0027] The method may include the following steps: 0. UDM creates or stores user identity profiles, and the user identifiers are active in UDM or PCF.

[0028] 1. The UE sends a PDU session establishment request, including the user identifier, to the AMF via the gNB. This request can also be a PDU session modification request.

[0029] 2. The AMF sends an SM context creation request, including the user identifier, to the SMF.

[0030] 3. The SMF sends a subscription data request, including the user identifier, to obtain the subscription data.

[0031] 4. The UDM checks whether the user identifier is active and / or authorized, or whether the user identifier is an active user identifier stored in the UDM associated with the UE / SUPI.

[0032] 5. UDM sends the user-preferred QoS parameters to SMF.

[0033] 6. The SMF sends an SM context creation response to the AMF.

[0034] 7-8. SMF selects UPF and establishes an N4 session between UPF and SMF.

[0035] 9. SMF sends N1N2 message transmission to AMF, including PDU session establishment and acceptance message.

[0036] 10. The AMF sends a PDU session establishment accept message to the UE via the gNB.

Claims

1. A method for managing Protocol Data Unit (PDU) sessions executed by 5G core network equipment, characterized in that, The method includes: The user equipment (UE) receives a PDU session establishment request, specifically via a base station, wherein the PDU session establishment request includes a user identifier that identifies a specific user. Obtain the user profile information corresponding to the user identifier. The QoS parameters and / or policy parameters of the PDU session are determined by taking into account the user profile information.

2. The method according to claim 1, characterized in that, Obtaining the user profile information corresponding to the user identifier includes: Retrieve the user profile information corresponding to the user identifier from the user identity profile of the specific user previously stored in the core network device. The user identity profile is stored in the unified data management (UDM) or unified data repository (UDR) entity of the core network device. Optionally, the user profile information includes the device associated with the user, credential service quality parameters, and / or policy parameters.

3. The method according to any one of claims 1 to 2, characterized in that, Obtaining the user profile information corresponding to the user identifier includes: Determine whether the user identifier in the received PDU session establishment request is active and / or authorized. If the determination is affirmative, obtain the user profile information corresponding to the user identifier, or Determine whether the user identifier is an active identifier stored in association with the UE that sent the PDU session establishment request, or is associated with the UE's subscription permanent identifier (SUPI). If the determination is affirmative, the user profile information corresponding to the user identifier is obtained.

4. The method according to any one of claims 1 to 3, characterized in that, Receiving the PDU session establishment request includes: The Access and Mobility Management Function (AMF) entity of the core network, specifically via the base station, receives the PDU session establishment request from the UE. The AMF sends a Session Management Function (SMF) content creation request, including a user identifier, to the Session Management Function (SMF) entity of the core network. The SMF sends a subscription data request to the UDM to obtain the user profile information. Receiving the PDU session establishment request further includes the following optional steps: The AMF generates an SM content creation request that includes the user identifier.

5. The method according to any one of claims 1 to 4, characterized in that, Further steps include: Specifically, a PDU session establishment accept message is sent to the UE via the base station. Preferably, obtaining the user profile information corresponding to the user identifier further includes: The UDM sends the user profile information corresponding to the user identifier to the SMF.

6. The method according to any one of claims 1 to 5, characterized in that, Establishing the PDU session based on the user profile information corresponding to the user identifier includes: The SMF sends a response to the AMF requesting the creation of SM content. The SMF selects the User Plane Function (UPF) entity of the core network for the PDU session. An N4 session is established between the SMF and the UPF.

7. The method according to any one of claims 1 to 6, characterized in that, Specifically, sending the PDU session establishment accept message to the UE via the base station includes: The SMF sends an N1N2 message transmission to the AMF, which includes the PDU session establishment acceptance message. The AMF sends the PDU session establishment accept message to the UE via the base station.

8. A method for managing Protocol Data Unit (PDU) sessions executed by a User Equipment (UE), characterized in that, The method includes: Specifically, a PDU session establishment request, including a user identifier, is sent to the core network via the base station. Specifically, the PDU session establishment acceptance message for the UE is received via the base station.

9. A method for managing Protocol Data Unit (PDU) sessions executed by a base station, characterized in that, The method includes: Receive a PDU session establishment request that includes a user identifier that identifies a specific user. Send the PDU session establishment request to the core network. Receive PDU session establishment accept message from the core network. The base station receives a PDU session establishment accept message for the UE.

10. A 5G core network device, characterized in that, Suitable for implementing the Protocol Data Unit (PDU) session management method according to any one of claims 1 to 7.

11. A user equipment, characterized in that, Suitable for performing the Protocol Data Unit (PDU) session management method according to claim 8.

12. A base station, characterized in that, Suitable for implementing the Protocol Data Unit (PDU) session management method according to claim 9.

13. A computer-readable storage medium including instructions, characterized in that, When executed by a computer, the instructions cause the computer, which is part of a 5G core network device, to perform the method according to any one of claims 1 to 7.

14. A computer-readable storage medium including instructions, characterized in that, When executed by a computer, the instructions cause the computer, which is part of a 5G user equipment, to perform the method according to claim 8.

15. A computer-readable storage medium including instructions, characterized in that, When executed by a computer, the instructions cause the computer, which is part of a 5G base station, to perform the method according to claim 9.

Images