Content for  TR 22.865  Word version:  19.2.0

During natural disasters, the recovery of communication services and the acquisition of the survivors' location are important to aid the rescue activities. Normally, satellite communication networks and standalone GNSS are utilized to serve communication and positioning independently. With the integration of satellite access in 5G systems, it's possible to provide both communication and positioning services by 5G system together to address the cases that GNSS cannot provide reliable positioning service (e.g. poor GNSS signal, limited visible satellites). Meanwhile, the positioning performance like accuracy can be improved with the assistance of 5G satellites (e.g. LEO), network information, etc. [16] Indonesia is famous for its extraordinary natural landscapes attracting millions of tourists around the world. Meanwhile, it is widely recognized as one of the most disaster-prone countries in the world according to data released by the United Nations International Disaster Reduction Agency (UN-ISDR) [17]. A disaster (e.g. earthquake, tsunamis) will impact tens of millions of people, who may get support from the sustainable and reliable communication service and positioning service of the 5G system.

Bali, Indonesia is covered by terrestrial access network of Operator TerrA and satellite access network of Operator SatA, which shares the core network of TerrA deployed in Jakarta with mutual agreement. 5G communication service and positioning service have been launched all through Indonesia. GNSS (e.g. GPS, BeiDou) are allowed to use in Indonesia, but are independent from 5G satellite constellation. It is assumed that UEs with the subscription of TerrA network are capable of 5G satellite access. Some of them are incapable of GNSS receivers and some are integrated with different types of GNSS receivers.

A tsunami strikes Bali and has destroyed most infrastructures and terrestrial access networks. The core network is still in service without damage. The awake survivors will initiate an emergency call or send an emergency message to report personal information, injuries, and surrounding conditions to Indonesia Rescue Center for rescue requests through SatA access network. During the interaction, the precise location information (e.g. accurate latitude) of the survivors is requested to report to Rescue Center from UE or/and the network with the help of 3GPP positioning methods or non-3GPP positioning methods (e.g. GNSS) within the requested response time of local regulatory requirements. The location of the survivors and rescue personnel will be sent to the survivors as well for preparation. All powered-on UEs will autonomously update registration in TerrA's network using satellite access. The network identifies the areas where the devices are located and authorizes Rescue Center to fetch real-time devices' location and tracing log during the Rescue UAV or Helicopter searching for the survivors in a coma or not able to report emergency information actively.

The locations of the awake survivors are identified as compliant with regulatory requirements. The location information of powered-on devices is available in Rescue vehicles.

Regarding TS 22.261 as below, UE using satellite access shall have the capability to offer the location, and 5G system needs to determine the location for service, but not consider the situation that the location cannot be decided by UE alone. The legacy requirements for positioning service defined in TS 22.261 are not well adapted to all types of UE with satellite access considering the satellite characteristics (e.g. latency).

[PR 5.13.6-001] [PR 5.13.6-002] [PR 5.13.6-003]