面向多层多域巨型星座的卫星网络拓扑控制  

Topology control of satellite networks for multi-layer and multi-domain mega-constellation

作　　者：徐晓帆 章跃跃 曹馨悦 缪馨 燕锋[4] 杜平 XU Xiaofan;ZHANG Yueyue;CAO Xinyue;MIAO Xin;YAN Feng;DU Ping(Shanghai Satellite Network Research Institute Co.,Ltd.,Shanghai 200120,China;State Key Laboratory of Satellite Network,Shanghai 200120,China;Shanghai Key Laboratory of Satellite Network,Shanghai 200120,China;National Key Laboratory of Mobile Communications,Southeast University,Nanjing 210018,China)

机构地区：[1]上海卫星互联网研究院有限公司,上海200120 [2]卫星互联网全国重点实验室,上海200120 [3]上海市卫星互联网重点实验室,上海200120 [4]东南大学移动通信全国重点实验室,江苏南京210018

出　　处：《通信学报》2024年第7期1-9,共9页Journal on Communications

基　　金：国家自然科学基金青年科学基金资助项目(No.62101317);上海经信委基金资助项目(No.2022-2023-JCSS-01002)。

摘　　要：针对巨型星座单星任务的时变性以及由此产生的负载过重、单节点脆弱性以及网络控制平面的高可靠性需求,研究面向多层多域巨型星座的卫星网络拓扑控制,提出了一种基于北斗网格位置码的多层多域拓扑描述模型。首先给出了域、层、片、元相关概念及其定义,以实现对卫星节点和星间链路的拓扑特征的统一表征,刻画卫星节点的连通状态以及整个星座的网络拓扑结构;然后设计了一套以在轨控制器为核心、以地面网络控制为辅助的拓扑控制架构,用于提供常态化运行服务保障;最后通过仿真平台对巨型星座子域划分和统一表征进行了验证分析。仿真结果表明,所提拓扑描述模型能够提高巨型星座卫星网络拓扑控制过程的实时性与准确率。In view of the time-varying nature of the single-satellite mission in the mega constellation,the resulting overload,the vulnerability of a single node,and the high reliability requirements of the network control plane,the topology control of satellite networks for multi-layer and multi-domain mega-constellation was studied.A multi-layer and multi-domain topology description model based on Beidou grid position code was proposed.Firstly,the concepts and definitions of layer,domain,slice and element were given to realize the unified characterization of the topological characteristics of satellite nodes and inter-satellite links,and to describe the connectivity state of satellite nodes and the network topology of the entire constellation.Secondly,a topology control architecture with the on-orbit controller as the core and the ground network control as the auxiliary,was designed to provide normal operation service guarantee.Finally,the simulation platform was used to verify and analyze the subdomain division and unified characterization of the mega-constellation.The results show that the proposed topology description model can improve the real-time and accuracy of the topology control process for mega-constellation satellite networks.

关 键 词：巨型星座 多层多域 北斗网格位置码 网络拓扑控制 

分 类 号：TN92[电子电信—通信与信息系统]