Updating SM Policy
This section describes the call flow of updating the SM Policy.

Step |
Description |
---|---|
1 |
The SMF sends an N7 Update request to the PCF. |
2 |
The PCF sends a load session by SessionID to the CDL. |
3 |
In response, the CDL sends the Session Record to the PCF. |
4 |
The PCF resolves the service configuration. |
5 |
If the charging information is not available in the PCF session, then PCF populates the session with the primary and secondary CHF address. |
6 |
If the charging information is configured in the service, then PCF adds the charging information object in the response object. |
7 |
If the table driven charging decision is configured in the service, then PCF queries CRD to retrieve the list of charging decision. |
8 |
The PCF compares the result with the PCF session and identifies the delta information. |
9 |
The PCF adds the charging decision in the response object. |
10 |
The PCF sends the Update Session request to the CDL. |
11 |
The CDL acknowledges the update request by sending an acknowledgment to the PCF. |
12 |
The PCF sends an N7 Update response to the SMF. |