Offline SDF or Online URRs Usage Report
For the Volume/Time threshold detected at UPF, the UPF prepares the Usage report with VOLTH/TIMTH for online URR or offline SDF level URR. The following call flow and procedure describes the Asynchronous Usage report for online or offline Bearer Recalculation.

Step | Description | ||
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1 |
UPF initiates N4 Session report Exchange with SMF. |
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2 |
N4 Session Report Request or Response Exchanges between UPF and SMF occur with an online/offline Volume/Time threshold. |
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3 |
SMF sends GTPP Data Transfer Request with SDF Containers.
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4 |
SMF receives GTPP Data Record Transfer Response from OFCS. |
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5 |
SMF sends Gy CCR-U with one or multiple MSCCs (for each RG+Service ID) to the OCS. |
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6 |
SMF receives Gy CCA-I with quota, triggers for each RG+Service ID. |
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7 |
SMF sends N4 Session Modification Request to the UPF.
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8 |
UPF sends N4 Session Modification Response to the SMF. |