中国空间科学技术

中国空间科学技术 ›› 2024, Vol. 44 ›› Issue (6): 122-131.doi: 10.16708/j.cnki.1000-758X.2024.0097

• 论文 • 上一篇    下一篇

大规模低轨卫星网络流量监测方法

李德军1,2，刘志慧2,*，张乙凡2,3，王俊义1，金世超2，董涛2   

  1. 1.桂林电子科技大学 信息与通信学院，桂林541004
    2.航天恒星科技有限公司 天地一体化信息技术国家重点实验室，北京100095
    3.北京理工大学 集成电路与电子学院，北京100081
  • 收稿日期:2023-06-13 修回日期:2023-10-07 录用日期:2023-12-23 发布日期:2024-12-03 出版日期:2024-12-05

A method of traffic monitoring for large-scale LEO satellite networks

LI Dejun1,2，LIU Zhihui2,*，ZHANG Yifan2,3，WANG Junyi1，JIN Shichao2，DONG Tao2   

  1. 1.School of Information and Communication，Guilin University of Electronic and Technology，Guilin 541004，China
    2.State Key Laboratory of Space-Ground Integrated Information Technology，Space Star Technology Co.，Ltd.，Beijing
     100095，China
    3.School of Integrated Circuits and Electronic，Beijing Institute of Technology，Beijing 100081，China
  • Received:2023-06-13 Revision received:2023-10-07 Accepted:2023-12-23 Online:2024-12-03 Published:2024-12-05

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摘要： 针对大规模低轨卫星网络流量监测方法不灵活、网络突发事件响应慢，提出一种基于带内网络遥测的大规模低轨卫星网络流量监测方法。为了减少大规模低轨卫星网络流量监测的开销，所提方法结合低轨卫星网络拓扑高动态的特点，提供基于最短路径的域内汇聚节点选择和基于微突发的领导节点遥测信息上报，实现了流量中异常状态信息的快速监测和上报。域内汇聚节点选择策略通过计算最短路径和时延获得域内的汇聚节点。领导节点遥测信息上报策略通过监测网络的微突发节点，并令该微突发节点直接上传遥测信息至汇聚节点。仿真结果表明，相比于传统的监测方法，所提方法可以降低遥测包开销，实现突发流量的低开销灵活监测。以500个节点的LEO卫星网络规模为例，路径长度为7跳的网络遥测平均开销可降低27.77%。

关键词: 低轨卫星, 流量监测, 带内遥测, 汇聚策略, 节点选择

Abstract: Aiming at the inflexiability of network traffic monitoring and tardy response to network emergencies for LS-LEO(large-scale low earth orbit) satellite networks, a method of network traffic monitoring for LS-LEO satellite networks based on INT(in-band network telemetry) is proposed. In order to reduce the overhead of LS-LEO satellite networks traffic monitoring, the proposed method combines the high dynamic topology characteristics of LEO satellite networks, and provides aggregation node selection of network traffic monitoring information within each domain of LEO satellite networks and leader node selection based on microburst traffic, which realizes the rapid monitoring and reporting for abnormal state information of network traffic. In the domain-based aggregation node selection strategy, the aggregation node is obtained by calculating the shortest path and delay. The microburst node is monitored by the telemetry information reporting strategy of the leader node, and the telemetry information is directly reported by the node to the aggregation node. The simulation results show that，compared with the traditional traffic monitoring method, the proposed method can effectively reduce the overhead of telemetry packets and realize flexible low-overhead monitoring of bursts in traffic. Taking the LEO satellite network scale of 500 nodes as an example, the average telemetry overhead for a flow with a path length of 7 hops can be reduced by 27.77%.

Key words: low earth orbit satellite, traffic monitoring, in-band network, aggregation strategy, node selection