5.2 Activation and deactivation of 5GS test mode bearers (UE test mode procedures)

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

5.2.1 General

The SS performs, where applicable, activation and deactivation of the conformance test functions in the UE by sending Security Protected NAS Layer 3 messages.

The UE test mode procedures are intended for setting the UE into a test mode where the SS can set up test bearers terminated at a particular point in the 5GS protocol stack as specified in the functional block diagram of each UE test loop mode of operation. The following test bearers are defined in the present specification:

– data radio bearers (UE test loop mode A),

– EPS bearers or 5GS QoS flows (UE test loop mode B).

– MBS radio bearers (UE test loop mode C).

– NR PC5 QoS flows (UE test loop mode E).

5.2.2 Activate UE test mode

Same as TS 36.509 [6], subclause 5.3.2 with the following exceptions:

– where E-UTRA is mentioned the same applies for NR;

– where V2X is mentioned the same applies for NR sidelink;

– MTCH data radio bearer is replaced by MBS radio bearer;

the NB-IoT mode is out of the scope of the present specification;

where different UE test loop modes are mentioned only those applicable to 5GS should be taken into account (see subclause 5.3.4 for the applicable 5GS UE test loop modes).

5.2.3 Deactivate UE test mode

Same as TS 36.509 [6], subclause 5.3.3 with the following exceptions

– where E-UTRA is mentioned the same applies for NR;

– where V2X is mentioned the same applies for NR sidelink;

– the NB-IoT mode is out of the scope of the present specification;

– where different UE test loop modes are mentioned only those applicable to 5GS should be taken into account (see subclause 5.3.4 for the applicable 5GS UE test loop modes).

Apart from sending the appropriate deactivation command to the UE the functions shall be deactivated by:

switching off the UE; or

by removing the USIM.