Study on architecture enhancements for vehicle-mounted relays - Phase 2
The scope of this Technical Report is to study and identify potential architecture and system level enhancements for the 5G system to support the operation of a mobile gNB mounted on vehicles, using NR for wireless access toward the UE and for wireless backhaul access toward the 5GC. The study addresses the service requirements documented in TS 22.261 [3] for the mobile base station relays, and focuses on the following aspects:
- architecture enhancements for the support of the wireless backhauling of the mobile gNB and its CN/OAM (e.g. N2/N3) interfaces, including e.g. UE access control, mobility aspects;
- the architecture to enable authorization and configuration of the mobile gNB;
- support of UE location services and emergency services via the mobile gNB.
The wireless backhauling of mobile gNB and CN/OAM (e.g. N2/N3) interfaces may use the existing TN or NTN technology.
NOTE 1: The mobile gNB configuration aspect needs synchronization with RAN working group.
NOTE 2: No enhancement is aimed to the existing QoS mechanisms for the wireless backhaul.