5.1 General

38.5093GPP5GSRelease 17Special conformance testing functions for User Equipment (UE)TS

For consistency with legacy terminology, the present specification uses the terms ‘Activate UE test mode’ and ‘Deactivate UE test mode’ for denoting the activation and the deactivation of 5GS test mode bearers procedures respectively. Consequently, ‘Activate UE test mode’ should not be understood as setting the UE in test mode in general rather, as setting the UE in a mode (i.e. establishing a special type of test bearers) which other special UE conformance testing functions require for proper operation. As this has been mentioned elsewhere in the present specification, not all special UE conformance testing functions require such a setting.

Similarly, the present specification may use the term ‘UE test loop mode X operation", where X is a chose letter, for denoting operation which does not represent true looping back of data being received rather, it represents what can be called as a "pseudo loop" i.e. providing back information about the received data e.g. the number of the received packets.