Section: 4.11.0a.2a.8 UE Policy Association Termination initiated by PCF for PDU session
Content: The following case is considered for UE Policy Association Termination: 1. UE Detach from the EPS. 2. PDN connection for UE which is used for delivery of UE Policy Container in EPS is released. 3. Changing of RAT type from EPS to 5GS, notified to PCF for the PDU Session by SMF+P-GW-C. Figure 4.11.0a.2a.8-1: UE Policy Association termination in EPS This procedure applies for non-roaming scenarios, LBO roaming scenarios and Home Routed roaming scenario. In the non-roaming case, the V-PCF for the UE is not involved, the role of the V-PCF for the PDU session is performed by the PCF for the PDU session and the role of the H-PCF for the UE is performed by the PCF for the UE. For the LBO roaming scenarios, the V-PCF for the PDU session interacts with the V-PCF for the UE and the V-PCF for the UE interacts with the H-PCF for the UE. In the Home Routed roaming scenario, the V-PCF for the UE is not involved, the role of the V-PCF for the PDU session is performed by the PCF for the PDU session in HPLMN and the role of the H-PCF for the UE is performed by the PCF for the UE in HPLMN. 1. The (V-)PCF for the PDU session terminates a UE Policy Association with the (V-)PCF for the UE when: - The SMF+P-GW-C notifies the changing of RAT type from EPS to 5GS; or - The SMF+P-GW-C terminates the SM policy association with (V-)PCF for the PDU session due to UE detached from EPS or the PDN connection for UE which is used for delivery of UE Policy Container in EPS is released. 2. Same as in clause 4.16.13.1 step 2, replace AMF with (V-)PCF for the PDU session. 3. Same as in clause 4.16.13.1 step 3, replace AMF with (V-)PCF for the PDU session. 4. Same as in clause 4.16.13.1 step 4. 5. Same as in clause 4.16.13.1 step 5.