Analysis on Mobility Enhancement Strategies for NR NTN
Firstly,it analyzes the issues that need to be addressed for NR NTN mobility enhancement,including increased signalling latency due to large propagation delay,frequent cell change due to satellite movement,lower robustness of measurement-based mobility due to reduced signal strength variation between cell centers and cell edges,and serious power consumption due to NTN UE frequently measure neighbor TN cells.To address these issues in NTN,it puts forward RACH-less handover and satellite switch with re-synchronization.Finally,it analyzes the NTN-TN mobility enhancement strategies.
NR NTNRACH-less handoverPCI unchanged cellNTN-TN mobilitySatellite switch
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