NR NTN移动性管理增强策略分析  

Analysis on Mobility Enhancement Strategies for NR NTN

作　　者：司亮 王森 李益锋 张建国 Si Liang;Wang Sen;Li Yifeng;Zhang Jianguo(China Information Technology Designing&Consulting Institute Co.,Ltd.,Beijing 100048,China;Huaxin Consulting Co.,Ltd.,Hangzhou 310052,China)

机构地区：[1]中讯邮电咨询设计研究院有限公司,北京100048 [2]华信咨询设计研究院有限公司,浙江杭州310052

出　　处：《邮电设计技术》2024年第12期48-53,共6页Designing Techniques of Posts and Telecommunications

摘　　要：首先阐述了NR NTN移动性增强需要解决的问题,包括大传播时延导致的信令延迟、卫星移动引起的频繁小区变化、小区中心和小区边缘之间的信号强度变化不明显导致的移动性的鲁棒性较低以及NTN终端频繁测量TN小区导致的功耗增加。针对这些问题,提出了无RACH切换以及具有重新同步的卫星转换方案,最后给出了NTN-TN间移动性管理增强策略。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 measurementbased 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 

分 类 号：TN929.5[电子电信—通信与信息系统]