A.52 Monitoring of QoS flow modification

28.5523GPP5G performance measurementsManagement and orchestrationRelease 18TS

The QoS flow may need to be modified to fulfil the updated QoS requirements for the UE. The QoS modification success or failure has direct impact to the users about the QoS that the network can provide. The performance measurements related to QoS flow modification are needed to evaluate the performance that whether or not the UE’s updated QoS requirements are fulfilled by the network, and to support finding the causes of the failures for troubleshooting.

The QoS flows, within the PDU session, may be established in NG-RAN or untrusted/trusted non-3GPP access, so separate performance measurements are needed to monitor the QoS flow modifications respectively in NG-RAN and untrusted or trusted non-3GPP access.