(A) network operator(s) ha(s) deployed 5G terrestrial RATs as part of the 5G system over a given geographical area. The geographical area may encompass several countries, and the infrastructure where the 5G terrestrial network is deployed includes RANs as well as CNs.
A crisis occurs: a significant earthquake, a flood, or a war. Elements of the RATs are partially or completely destroyed. Accesses to the services that are normally delivered by the terrestrial network are not available anymore.
At the same time, the crisis leads to a situation of urgency for the population, as well for the public institution in order to provide first aid support, and to restore security and to organise logistics support.
Alice is a 5G field engineer. She is located in the area of the crisis, where she is deploying and maintaining 5G terrestrial infrastructures. Alice wants to be provided with support from remote HQ to help restore the 5G infrastructure.
Bob is a Crisis Management Officer. He is in charge of a Search & Rescue team. He needs to interact with deployed and spread teams to coordinate actions: the search area goes beyond Device to Device (D2D) capabilities, or deployable on field capabilities for 5G terrestrial coverage.
(A) 5G satellite RAT(s) is also deployed with a radio coverage addressing the same geographical area.
Alice and Bob are equipped with UEs with satellite access capabilities.
Alice and Bob have lost access to their nominal 5G terrestrial networks.
A number of network operators with access to the satellite component grant access to their network with a minimum set of service (such as voice, messaging, mail) so as to provide to each UEs under the satellite coverage a guaranteed access.
Public and professional users such as Alice are provided with a network slice that guarantees a certain percentage of the allowable traffic; a policy is put in place to adjust offer with respect to demand.
Mission critical forces to which Bob belongs are provided another slice with another part of the allowable traffic so as to guarantee the support to their mission.
During a transition period, before restoration to a normal situation with their nominal 5G terrestrial networks,
Alice has access to a minimum set of communication services.
Bob has access to a minimum set of communication services to perform his duty.
For the purpose of mission critical services, the 5G system shall have the capability to enable connectivity through (a) 5G satellite RAT(s).
For non-mission critical services, the 5G system shall have the capability to route some traffic through (a) 5G satellite RAT(s) to deliver a minimum set of services (such a voice, data traffic) for specific sets of users.
A 5G system with satellite access shall support at least one 5G satellite RAT.
In a 5G system with satellite access, UEs with satellite access shall support at least one 5G satellite RAT.