低轨卫星互联网用户切换管理:切换协议与算法  

User Handover Management of Low Earth Orbit Satellite Internet:Handover Protocols and Algorithms

作　　者：黄辂辰 肖丽霞 姚壮 周家喜 HUANG Luchen;XIAO Lixia;YAO Zhuang;ZHOU Jiaxi(Research Center of 6G Mobile Communication,School of Cyber Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学网络空间安全学院6G移动通信研究中心,湖北武汉430074

出　　处：《无线电通信技术》2024年第6期1110-1117,共8页Radio Communications Technology

基　　金：国家重点研发计划(2021YFB2900502)。

摘　　要：随着移动终端和应用的快速增长,无线网络需要满足边远地区、农村和城市地区无处不在的连接需求。相较于中高轨卫星,低轨卫星通常在500~2000 km运行,具有建设成本低、覆盖范围广、功耗低、传播延迟短等优势,低轨卫星网络已被广泛认为是提供全球无缝覆盖的潜在解决方案。然而,未来低轨卫星网络的规模大、动态性强,其用户切换管理将是一个复杂的过程。针对低轨卫星互联网用户切换管理的最新研究进行了全面总结,从低轨卫星网络的实际架构与切换管理挑战出发,阐述了3GPP体制的切换管理协议,总结了切换管理的算法,探讨了低轨卫星互联网中用户切换管理的未来研究方向。With the rapid growth of mobile devices and applications,wireless networks need to meet ubiquitous connectivity needs of remote,rural,and urban areas.In comparison to medium and high Earth orbit satellites,low earth orbit satellites operate within a range of 500~2000 kilometers and offer advantages of low construction cost,wide coverage,low power consumption,and short propagation delay.low earth orbit satellite network has been widely recognized as a potential solution for providing seamless global coverage.However,future low earth orbit satellite network is expected to be large and dynamic,posing challenges for handover management.This paper provides a comprehensive review of recent research on low earth orbit satellite network handover management,describing the handover management protocol of 3GPP based on the practical architecture and handover management challenges of low earth orbit satellite network.Additionally,it summarizes algorithms and discusses future development directions for the handover management of satellite internet.

关 键 词：低轨卫星网络 切换管理 切换协议 切换算法 

分 类 号：TN927.2[电子电信—通信与信息系统]