E.5 Reporting serving network identity

29.2143GPPPolicy and charging control over Rx reference pointRelease 17TS

When a new AF session is being established as described in clause 4.4.1 or is being modified as described in clause 4.4.2, the AAA command shall also contain the PLMN identifier within the 3GPP-SGSN-MCC-MNC AVP and, if available, the NID within the NID AVP if the PCF has previously requested the SMF to be updated with the serving network identity.

NOTE: The combination of a PLMN identifier and a NID identifies an SNPN, as specified in 3GPP TS 23.501 [55] clause 5.30.2.

When the AF initiates a session termination, the PCF shall include in the STA command the PLMN identifier within the 3GPP-SGSN-MCC-MNC AVP and, if available, the NID within the NID AVP:

– if the PCF received an ST-Request from the AF, indicating an AF session termination and if location info is not available, as specified in clause 4.4.4; and

– if the AF requested the PCF to report the access network information, the Rx session is being terminated and if location info is not available, as specified in clause 4.4.6.7.

When the PCF needs to inform the AF about a traffic plane event, the PCF shall include in the RAR command the PLMN identifier within the 3GPP-SGSN-MCC-MNC AVP and, if available, the NID within the NID AVP:

– when the PCF gets the knowledge that one or more SDFs have been deactivated, if the RAN-NAS-Cause feature is supported and if location info is not available, as specified in clause 4.4.6.2;

– when the PCF is notified of the loss or release of resources associated to the PCC rules corresponding with AF signalling IP flows, if the RAN-NAS-Cause feature is supported and if location info is not available, as specified in clause 4.4.6.3;

– if the AF requested the PCF to report the access network information, the Rx session is not being terminated and if location info is not available, as specified in clause 4.4.6.7; and

– when the PCF gets the knowledge that the service network where the UE is located has been updated or becomes available and the AF subscribed to PLMN_CHANGE has described in clause 4.4.6.9.