A.29 Monitor of call (/session) setup performance

28.5523GPP5G performance measurementsManagement and orchestrationRelease 18TS

Call(/session) setup is one of most important step to start delivering services by the networks to users.

The success or failure of a call(/session) setup directly impacts the quality level for delivering the service by the networks, and also the feeling of the end user. So the success or failure of call(/session) setup needs be monitored, this can be achieved by the calculation of call setup success rate which gives a direct view to evaluate the call setup performance, and the analysis of the specific reason causing the failure to find out the problem and ascertain the solutions.

In addition, the time duration of the call(/session) setup need to be monitored as it impacts the end user experience, and by comparison with operator’s benchmark requirements, the optimization may be required according the performance.

To support the monitor of success or failure of the call(/session) setup, the performance measurements related toPDU Session Resource Setup/modify (See TS 38.413[11]) in NG-RAN or via trusted/untrusted non-3GPP access and Initial Context Setup (See TS 38.413[11]) procedures for each QoS level and each S-NSSAI are needed.