Section: 4.11.0a.2a.6 UE Policy Association Modification initiated by the PCF for the UE
Content: The following impacts are applicable to clause 4.16.12.2 (UE Policy Association Modification initiated by the PCF procedure): In the non-roaming case, the V-PCF is not involved, the AMF is replaced by the PCF for the PDU Session, and the role of the H-PCF is performed by the PCF for the UE. For the Home Routed roaming scenarios, the V-PCF is not involved, the AMF is replaced by the H-PCF for the PDU Session, and the role of the H-PCF is performed by the H-PCF for the UE. For the LBO roaming scenarios, the AMF is replaced by the V-PCF for the PDU Session, the role of the V-PCF is performed by the V-PCF for the UE and the role of the H-PCF is performed by the H-PCF for the UE. - Steps 1a, 1c, 2a, 2c and 2d: These steps are not applicable for Home Routed roaming, since the V-PCF is not involved. - Step 3: The (H-)PCF may create the UE policy container including UE policy information as defined in clause 6.1.2.2.2 of TS 23.503[ Policy and charging control framework for the 5G System (5GS); Stage 2 ]  [20]. The (H-) PCF checks whether the UE Policy Association for the UE is established for a UE in EPS by checking the RAT-Type of the UE Policy Association and in this case the (H-)PCF may send the UE Policy Container in the Npcf_UEPolicyControl_UpdateNotify Request. The (H-)PCF may provide updated PCRTs over the UE policy association. For Home Routed roaming, the V-PCF for a UE is not involved, therefore the Service Parameters provided by the AF from the VPLMN are not used by the H-PCF as input for the generation of the URSP rules. NOTE: Steps 5 and 6 are executed only in LBO roaming. - Step 5: In case the UE Policy Association is for a UE in EPS, the (V-) PCF for the UE provides the UE Policy Container and/or policy control triggers to the (V-) PCF for the PDU Session. - Step 6: The (V-) PCF for the PDU session sends a response to the (V-) PCF for the UE. - Steps 7, 8 and 9 are replaced by steps 10-13 of procedure UE Policy Association Establishment in EPS from clause 4.11.0a.2a.5.