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.
关键词
NR/NTN/无RACH切换/PCI不变小区/NTN-TN移动性/卫星转换
Key words
NR NTN/RACH-less handover/PCI unchanged cell/NTN-TN mobility/Satellite switch
维普
万方数据