LEO卫星通信网络的移动性管理  

Mobility management in LEO satellite communication networks

作　　者：贺达健 游鹏[1] 雍少为[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,长沙410073

出　　处：《中国空间科学技术》2016年第3期1-14,共14页Chinese Space Science and Technology

基　　金：国家安全重大基础研究(973)

摘　　要：近年来,低轨道(Low Earth Orbit,LEO)卫星通信网络以全球覆盖、低传输时延、低功耗链路、较强的抗毁性等特点而受到广泛关注,是未来全球移动通信系统的重要组成部分。移动性管理是构建LEO卫星通信网络的关键技术,为推动移动性管理问题的研究,文章从LEO卫星通信网络的结构和特点入手,阐述了LEO卫星通信网络中移动性管理的分类,并分析了其相比地面移动无线网络的特殊性。从链路层、网络层、传输层三个协议层次综述了近年来LEO卫星通信网络移动性管理研究的国内外现状,重点介绍了移动IPv6(Mobile IPv6,MIPv6)和无缝IP分集通用移动性结构(Seamless IP-diversity based Generalized Mobility Architecture,SIGMA)在LEO卫星通信网络中的应用。最后,指出了移动性管理的发展趋势。In recent years,low Earth orbit（LEO）satellite communication networks attract a lot of researchers＇ attention for its global coverage,short propagation delay,low-power links and great invulnerability performance,etc.It will be an important part of the future global mobile communication systems.Mobility management is a key technology for enabling service in LEO satellite communication networks.The characteristics,research status and problems of mobility management were analyzed.Firstly,a brief classification of mobility management of LEO satellite communications networks was provided and characteristics distinguished from terrestrial mobility wireless networks were analyzed based on the architecture and features ofLEO satellite communication networks. Then the state-of-the-art mobility management schemes in LEO satellite communication networks were summarized from link layer,network layer and transport layer.A detailed description of the application of MIPv6 and SIGMA in LEO satellite environment was given.Finally,some trends of mobility management of LEO satellite communications networks was pointed out.

关 键 词：卫星网络 低轨道卫星 移动性管理 移动IP 无缝IP分集通用移动性结构 

分 类 号：V1[航空宇航科学与技术—人机与环境工程] TN927[电子电信—通信与信息系统]