PDU type setting method, UE policy setting method, and related entity
A protocol data unit (PDU) type setting method, a user equipment (UE) policy setting method, and a related entity, where the PDU type setting method includes: setting, by UE, a requested PDU type of a PDU session in a process of establishing the PDU session, where the requested PDU type of the PDU session is set by the UE based on a first condition, the first condition includes an Internet Protocol (IP) version corresponding to an application, and the application is associated with the PDU session. In the embodiments of the present disclosure, the requested PDU type of the PDU session can be consistent with a PDU type requested by the application, such that the application can normally perform communication.
1. A protocol data unit (PDU) type setting method, comprising:
obtaining, by a user equipment (UE), a user equipment route selection policy (URSP) stored in a policy control function (PCF) entity, wherein the URSP comprises a data network name (DNN) and a PDU type supported by a first application, and wherein the PDU type supported by the first application comprises an Internet Protocol (IP) version supported by the first application; and
sending, by the UE, a request for establishing a PDU session associated with the first application, wherein a PDU type of the PDU session is set by the UE based on a first condition, wherein the first condition comprises the PDU type supported by the first application, wherein the PDU type of the PDU session is the IP version supported by the first application, wherein the IP version supported by the first application is the IP version requested by the first application, wherein the first condition comprises the IP version requested by the first application and the IP version supported by the DNN, and wherein sending the request comprises setting, by the UE, the PDU type of the PDU session to an intersection of the IP version requested by the first application and the IP version supported by the DNN.
2. The PDU type setting method of claim 1 , wherein obtaining the URSP comprises:
sending, by the UE, a registration request message to an access and mobility management function (AMF) entity, wherein the registration request message carries a globally unique temporary identity (GUTI) of the UE; and
receiving, by the UE, a registration response message from the AMF entity, wherein the registration response message carries the URSP for the UE from the PCF entity.
3. The PDU type setting method of claim 1 , wherein obtaining the URSP comprises:
sending, by the UE, a registration request message to an access and mobility management function (AMF) entity, wherein the registration request message carries a globally unique temporary identity (GUTI) of the UE; and
receiving, by the UE, a registration response message from the AMF entity, wherein the registration response message carries the URSP for the UE from the PCF entity.
4. The PDU type setting method of claim 2 , wherein after the UE sends the registration request message to the AMF entity and before the UE receives the registration response message from the AMF entity, the GUTI of the UE is carried in an update location request message from the AMF entity to a unified data management (UDM) and the URSP is carried in a context establishment response message from the PCF entity to the AMF entity.
5. The PDU type setting method of claim 3 , wherein after the UE sends the registration request message to the AMF entity and before the UE receives the registration response message from the AMF entity, the GUTI of the UE is carried in an update location request message from the AMF entity to a unified data management (UDM) and the URSP is carried in a context establishment response message from the PCF entity to the AMF entity.
6. The PDU type setting method of claim 1 , wherein the first condition further comprises the IP stack capability of the UE, and wherein sending the request further comprises setting, by the UE, the PDU type of the PDU session to the IP stack capability of the UE.
7. The PDU type setting method of claim 1 , wherein the IP version comprises IP version 4.
8. The PDU type setting method of claim 1 , wherein the IP version comprises IP version 6.
9. A user equipment (UE), comprising:
a processor; and
a memory coupled to the processor and configured to store a program instruction that, when executed by the processor, causes the UE to:
obtain a user equipment route selection policy (URSP) stored in a policy control function (PCF) entity, wherein the URSP comprises a data network name (DNN) and a protocol data unit (PDU) type supported by a first application, and wherein the PDU type supported by the first application comprises an Internet Protocol (IP) version supported by the first application; and
send a request for establishing a PDU session associated with the first application, wherein a PDU type of the PDU session is set by the UE based on a first condition, wherein the first condition comprises the PDU type supported by the first application, wherein the PDU type of the PDU session is the IP version supported by the first application, wherein the IP version supported by the first application is the IP version requested by the first application, wherein the first condition comprises the IP version requested by the first application and the IP version supported by the DNN, and wherein sending the request comprises setting, by the UE, the PDU type of the PDU session to an intersection of the IP version requested by the first application and the IP version supported by the DNN.
10. The UE of claim 9 , wherein the UE is configured to obtain the URSP by:
sending a registration request message to an access and mobility management function (AMF) entity, wherein the registration request message carries a globally unique temporary identity (GUTI) of the UE; and
receiving a registration response message from the AMF entity, wherein the registration response message carries the URSP for the UE from the PCF entity.
11. The UE of claim 9 , wherein the UE is configured to obtain the URSP by:
sending a registration request message to an access and mobility management function (AMF) entity, wherein the registration request message carries a globally unique temporary identity (GUTI) of the UE; and
receiving a registration response message from the AMF entity, wherein the registration response message carries the URSP for the UE from the PCF entity.
12. The UE of claim 10 , wherein after sending the registration request message to the AMF entity and before receiving the registration response message from the AMF entity, the GUTI of the UE is carried in an update location request message from the AMF entity to a unified data management (UDM) and the URSP is carried in a context establishment response message from the PCF entity to the AMF entity.
13. The UE of claim 11 , wherein after sending the registration request message to the AMF entity and before receiving the registration response message from the AMF entity, the GUTI of the UE is carried in an update location request message from the AMF entity to a unified data management (UDM) and the URSP is carried in a context establishment response message from the PCF entity to the AMF entity.
14. The UE of claim 9 , wherein the first condition further comprises the IP stack capability of the UE, and wherein the UE sends the request by setting the PDU type of the PDU session to the IP stack capability of the UE.
15. The UE of claim 9 , wherein the IP version comprises IP version 4.
16. The UE of claim 9 , wherein the IP version comprises IP version 6.
17. A non-transitory computer readable storage medium that stores instructions that, when executed by a processor of a user equipment (UE), cause the UE to perform a protocol data unit (PDU) type setting method, the PDU type setting method comprising:
obtaining a user equipment route selection policy (URSP) stored in a policy control function (PCF) entity, wherein the URSP comprises a data network name (DNN) and a PDU type supported by a first application, and wherein the PDU type supported by the first application comprises an Internet Protocol (IP) version supported by the first application; and
sending a request for establishing a PDU session associated with the first application, wherein a PDU type of the PDU session is set by the UE based on a first condition, wherein the first condition comprises the PDU type supported by the first application, wherein the PDU type of the PDU session is the IP version supported by the first application, wherein the IP version supported by the first application is the IP version requested by the first application, wherein the first condition comprises the IP version requested by the first application and the IP version supported by the DNN, and wherein sending the request comprises setting, by the UE, the PDU type of the PDU session to an intersection of the IP version requested by the first application and the IP version supported by the DNN.
18. The non-transitory computer readable storage medium of claim 17 , wherein the IP version comprises IP version 4 or IP version 6.