5.30.3.5 Support of emergency services in CAG cells

Emergency Services are supported in CAG cells, for UEs supporting CAG, whether normally registered or emergency registered as described in clause 5.16.4 and in clause 4.13.4 of TS 23.502 [3].

A UE may camp on an acceptable CAG cell in limited service state as specified in TS 23.122 [17] and TS 38.304 [50], based on operator policy defined in TS 38.300 [27].

NOTE: Support for Emergency services requires each cell with a Cell Identity associated with PLMNs or PNI-NPNs to only be connected to AMFs that supports emergency services.

The UE shall select a PLMN (of a CAG cell or non-CAG cell), as described in TS 23.122 [17] and TS 23.167 [18], when initiating emergency services from limited service state.

During handover to a CAG cell, if the UE is not authorized to access the target CAG cell as described in clause 5.30.3.4 and has emergency services, the target NG-RAN node only accepts the emergency PDU Session and the target AMF releases the non-emergency PDU Sessions that were not accepted by the NG-RAN node. Upon completion of handover the UE behave as emergency registered.