Usage Reporting Call Flow
This section describes the Usage Reporting call flow.
| Step | Description |
|---|---|
| 1 |
On UPF, the configured usage monitoring threshold limit reaches. |
| 2 |
UPF sends the PFCP Session Report Request along with the usage information for the URR to SMF. |
| 3 | SMF sends PFCP Session Report Response with Cause: PFCP Cause Request Accepted. |
| 4 |
SMF sends the received usage information to PCF in the Policy Update Request. |
| 5 |
PCF acknowledges with either updated threshold for monitoring or none to SMF. In case of none, monitoring to SMF is disabled. |
| 6 |
SMF removes or updates the corresponding URR and sends the modification request to UPF. |
| 7 |
UPF deactivates or reactivates the monitoring based on the received information. |
| 8 |
UPF sends the acknowledgment response with the corresponding cause code to SMF. |