Section: 4.16.13.2 PCF-initiated UE Policy Association Termination
Content: Figure 4.16.13.2-1: PCF-initiated UE Policy Association Termination This procedure concerns both roaming and non-roaming scenarios. In the non-roaming case, the V-PCF is not involved and the role of the H-PCF is performed by the PCF. For the roaming scenarios, the H-PCF interacts with the V-PCF to request removing Policy Association. The PCF is subscribed to notification of changes in Data Set "Policy Data" for a UE Policy Association ID. 1. The Policy data is removed, either the Data Set "Policy Data" or the Data Subset "UE context policy control". 2. The UDR sends the Nudr_DM_Notify_Request (Notification correlation Id, Policy Data, SUPI, UE Context Policy Control data, updated data) including the SUPI, the Data Set Identifier, the Data Subset Identifier and the Updated Data including empty "Policy Data" or empty "UE context policy control". 3. The PCF sends the Nudr_DM_Notify_Response to confirm reception and the result to UDR. 4. The PCF may notify the AMF of the removal of the UE Policy Association via Npcf_UEPolicyControl_UpdateNotify service operation. Alternatively, the PCF may decide to maintain the Policy Association if a default profile is applied, in this case steps 4, 5 and 6 are not executed. In the non-roaming case, the PCF unsubscribes to analytics from NWDAF if any. 5. The AMF acknowledges the operation. 6. Steps 2-5 in clause 4.16.13.1 AMF-initiated UE Policy Association Termination are performed to remove the UE Policy Association for this UE and the subscription to Policy Control Request Triggers for that UE Policy Association.