6 Quality of Service

22.1423GPPRelease 17TSValue Added Services (VAS) for Short Message Service (SMS) requirements

The quality of basic SMS service should not be affected by introducing the VAS-SMS.

The following key performance for quality of VAS-SMS shall be kept consistent with basic SMS. For example:

– SMS delivery successful rate

– authentication successful rate

– end to end data loss rate

– end to end data delay

– charging successful rate

– reliability of network and service