A.41 Monitoring of round-trip GTP packet delay on N3

28.5523GPP5G performance measurementsManagement and orchestrationRelease 18TS

Keeping track of GTP data packet delay over N3 is essential, since for certain services packet delay along the way through the system may have a noticeable impact on the end user. Incoming/outgoing GTP data packet delay measurements can be useful for evaluation, optimization, and performance assurance between gNB and UPF in the core. It is also important for the performance measurement of end-to-end point of view from UE to UPF. Performance degradation can happen any point although the focus is centered more at UE and RAN.