A.48 Monitoring of round-trip delay between PSA UPF and UE

28.5523GPP5G performance measurementsManagement and orchestrationRelease 18TS

The end to end delay in 5G networks between UE and PSA UPF has direct impact to users’ experience for some types of services (e.g., URLLC). In case the PSA UPF and NG-RAN are not time synchronised, the round-trip delay between PSA UPF and UE can be measured at PSA UPF.

The measurements on the round-trip delay between PSA UPF and NE can be used to evaluate the user plane delay performance in 5G networks and users’ experience.