A.47 Monitoring of GTP packets delay in UPF

28.5523GPP5G performance measurementsManagement and orchestrationRelease 18TS

The GTP packets may be delayed on the interfaces and in the NFs. For some services (such as URLLC sevices), the end to end packet delay in the network has clear impact to users’ experience. The GTP packets delay in the UPF, as one segment of the end to end delay in the network, needs to be measured in order to indicate where the performance degradation happens. The GTP packets are prioritized for transmitting for different 5QIs and S-NSSAIs, so the measurements per 5QI and S-NSSAI are needed.