4.10 Negotiation for future background data transfer procedure over Nt reference point

29.2133GPPPolicy and charging control signalling flows and Quality of Service (QoS) parameter mappingRelease 17TS

The following procedure shows the signaling flow for the SCEF to request the transfer policy for future background data transfer determined by the H-PCRF.

Figure 4.10.1: Negotiation for future background data transfer

1. Based on the SCS/AS request, the SCEF sends a Diameter BTR command to the H-PCRF for the request of transfer policy including the parameters as defined in subclause 4.4.1 of 3GPP TS 29.154 [56].

2. The H-PCRF determines one or more transfer policies based on the information received from the SCEF and other available information (e.g. network policy, existing transfer policies).

3. The H-PCRF sents a Diameter BTA command to the SCEF including the parameters as defined in subclause 4.4.1 of 3GPP TS 29.154 [56].

4. If there is more than one transfer policy provided from the H-PCRF to the SCEF in the BTA command, when the SCEF receives the selected transfer policy from the SCS/AS, the SCEF sends a Diameter BTR command to the H-PCRF with the selected transfer policy.

5. The H-PCRF acknowledges the BTR command by sending BTA command.