Usage Report with SoT for Predefined and Static Rules

This section provides information on the usage report with SoT for the predefined and the static rules.

Usage Report with SoT for Predefined and Static Rules
Usage Report with SoT for Predefined and Static Rules Call Flow Description

Step

Description

1

Both PCRF and SMF exchange the Gx CCR and CCA messages from each other.

Note

The SMF receives the predefined and static rules for the default bearer from PCRF.

2 and 3

The PFCP and GTPP message exchange happens. The SMF sends the PFCP messages to CnPGW-U and GTPP message to S-GW.

Note

In case of traffic detection at CnPGW-U, the CnPGW-U prepares the usage report with the SoT.

4

The CnPGW-U sends the N4 Session Report Request to SMF with the SoT details. The SMF sends the N4 Session Report Response to CnPGW-U.

5

SMF sends the CCR-I message with quota request for default bearer in Gy Diameter session to OCS. This session can have one or multiple MSCCs with Requested-Service-Unit (RSU) AVP, which is one for each Rating Group and service ID.

6

OCS sends the CCA-I message in the Gy Diameter session to SMF. The Diameter session includes details, such as quota and triggers for each Rating Group and Service ID.

7

SMF sends the N4 Session Modification Request to CnPGW-U. This request includes details on the required URRs with quota.

8

The CnPGW-U sends the N4 Session Modification Response to SMF.