Hi everybody,

Up to know, the Inter-cell handover of the RN is not supported. (36300- [4.7]). The TR 38.874 rel 15 focus on IAB (relay node in 5G) with physically fixed relays.

I am studying the case of a relay node in a moving platform (aircraft, vessel, train) with a satellite link as backhauling.

People in a plane for example are connected to a Relay node in the plane. This relay node is connected to a donor gNB (5G eNB) through a satellite link. this implies few things:

• single beam satellite: the plane fly all over the world but stays connected at the same satellite ground GW. The RN then remains connected to the same AMF. The UE is located in the same TAI even if it moved from New York to Hong Kong.
• Multibeam satellite: the plane changes of beam which implies the change of satellite ground GW.

I have few questions:

Does someone who studied the Relay Node approach in moving platform can give me a hint ?

Thanks

patrice