| IP-CAN Session Loss Rate | The KPI value decreases by more than 5% compared with the same time period in the previous day. | This KPI helps engineers to evaluate the PCC access and update capabilities of the mobile data network, including location update and policy update. |
| IP-CAN Session Traffic | The KPI value decreases by more than 5% compared with the same time period in the previous day. | This KPI helps engineers to evaluate the PCC access and update capabilities of the mobile data network and determine the equipment running status, which provides a basis for service adjustment and capacity expansion. |
| Success Rate for IP-CAN Session Establishment | The KPI value decreases by more than 5% compared with the same time period in the previous day. | This KPI helps engineers to evaluate the PCC capability of accessing the mobile data network. |
| Success Rate for PCEF-Initiated IP-CAN Session Modification | The KPI value decreases by more than 5% compared with the same time period in the previous day. | This KPI helps engineers to evaluate the PCC capability of reporting events. |
| Success Rate for PCRF-Initiated IP-CAN Session Modification | The KPI value decreases by more than 5% compared with the same time period in the previous day. | This KPI helps engineers to evaluate the PCC capability of updating information in the mobile data network. |