5.40.3 Disaster Condition Notification and Determination

The NG-RAN in the PLMN that provides Disaster Roaming service, broadcasts an indication of accessibility for Disaster Roaming service and optionally, a 'list of one or more PLMN(s) with Disaster Condition for which Disaster Roaming service is offered by the available PLMN' in the impacted area as described in TS 38.304 [50] and TS 38.331 [28].

A UE determines the Disaster Condition based on the information broadcasted from the NG-RAN providing Disaster Roaming service and performs the network selection and the access control for the Disaster Roaming as described in TS 23.122 [17] and TS 24.501 [47].

NOTE 1: How a PLMN is notified that another PLMN is a PLMN with Disaster Condition and how a PLMN is notified of the area where the associated Disaster Condition applies is managed by the government agencies or the authorities and is out of scope of 3GPP.

NOTE 2: The broadcast for Disaster Roaming service from the NG-RAN occurs only during the Disaster Condition.