星上透明转发非地面网络中的切换机制研究

北京邮电大学学报 ›› 2022, Vol. 45 ›› Issue (6): 105-112.

星上透明转发非地面网络中的切换机制研究

王则予,张梦菲,孙耀华,彭木根

北京邮电大学

收稿日期:2022-06-10 修回日期:2022-08-11 出版日期:2022-12-28 发布日期:2022-11-24
通讯作者: 孙耀华 E-mail:sunyaohua@bupt.edu.cn

Study on Handover Mechanism in Non-terrestrial Networks with Transparent Satellites

Ze-Yu Wang¹,Meng-Fei ZHANG², ²,Mugen Peng²

1. Beijing University of Posts and Telecommunications
2.

Received:2022-06-10 Revised:2022-08-11 Online:2022-12-28 Published:2022-11-24

摘要/Abstract

摘要： 针对星上透明转发的非地面网络架构，提出了基于星历信息触发切换和基于多决策指标进行切换链路判决的切换方案，设计了切换实施流程，通过系统仿真评估了不同切换方案性能。结果表明，与基于最大卫星仰角、最长卫星覆盖时间和最长链路存续时间的切换链路选择方案相比，所提方案可有效降低基站间切换次数从而降低切换信令开销，提高切换成功率。

关键词: 非地面网络, 星上透明转发, 链路切换, 切换流程设计

Abstract: Focusing on non-terrestrial networks with transparent satellites, a handover scheme is proposed, which triggers handover based on ephemeris information and selects handover link based on multi-decision indicators. In addition, handover procedure for practical implementation is designed and the performance of different handover schemes is evaluated through system simulation. Results show that compared with the handover schemes based on the maximum satellite elevation angle, the longest satellite coverage time and the longest link existing time, our proposal can effectively reduce the number of inter-gNB handover, thereby reducing signaling overhead and raising handover success rate.

Key words: non-terrestrial networks, transparent satellites, link handover, handover procedure design

中图分类号:

TN911.22

王则予张梦菲孙耀华彭木根. 星上透明转发非地面网络中的切换机制研究[J]. 北京邮电大学学报, 2022, 45(6): 105-112.

Ze-Yu Wang Meng-Fei ZHANG Mugen Peng. Study on Handover Mechanism in Non-terrestrial Networks with Transparent Satellites[J]. Journal of Beijing University of Posts and Telecommunications, 2022, 45(6): 105-112.