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清华大学学报(自然科学版)  2017, Vol. 57 Issue (1): 12-17    DOI: 10.16511/j.cnki.qhdxxb.2017.21.003
  计算机科学与技术 本期目录 | 过刊浏览 | 高级检索 |
天地一体化网络域内路由协议OSPF+
徐明伟1, 夏安青1, 杨芫1, 王宇亮2, 桑猛2
1. 清华大学 计算机科学与技术系, 北京 100084;
2. 比威网络技术有限公司, 北京 100084
Intra-domain routing protocol OSPF+ for integrated terrestrial and space networks
XU Mingwei1, XIA Anqing1, YANG Yuan1, WANG Yuliang2, SANG Meng2
1. Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China;
2. BitWay Network Technology Company, Beijing 100084, China
全文: PDF(1233 KB)  
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摘要 建设天地一体化网络是中国的一项重要工程。在空间网络中引入IP协议族及相关路由技术能充分发挥互联网的长处,更加快速和高效地实现多网融合。然而,空间网络的特殊性使得传统互联网的路由技术不能直接被使用。该文提出一种基于传统域内路由协议OSPF的天地一体化网络域内路由协议OSPF+,利用卫星运动轨迹可以预先计算的规律,引入拓扑预测,结合扩展的邻居状态机来优化链路状态数据库的同步,在空间网络自治系统中实现低开销、高稳定性的自适应动态路由。模拟实验结果表明:OSPF+能在约1 s的时间内快速完成路由收敛,且达到98%以上的稳定性。
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徐明伟
夏安青
杨芫
王宇亮
桑猛
关键词 天地一体化网络空间网络卫星网络域内路由协议    
Abstract:Constructing an integrated terrestrial and space network is one of the key projects in China. Heterogeneous networks can be efficiently integrated using the IP protocol family in space networks to leverage the advantages of the Internet. However, traditional routing techniques cannot be used directly due to the special characteristics of space networks. This paper describes an extended traditional intra-domain routing protocol based on OSPF for network communications in space. The protocol uses topology predictions based on the regular motion of satellites and extends the neighbor state machine to optimize the synchronization of link-state databases to achieve efficient, stable dynamic self-adaptive routing. Simulations show that this protocol has a convergence time of less than 1 second and greater than 98% stability.
Key wordsintegrated terrestrial and space network    space networks    satellite networks    intra-domain routing protocol
收稿日期: 2016-08-03      出版日期: 2017-01-20
ZTFLH:  TP393.0  
引用本文:   
徐明伟, 夏安青, 杨芫, 王宇亮, 桑猛. 天地一体化网络域内路由协议OSPF+[J]. 清华大学学报(自然科学版), 2017, 57(1): 12-17.
XU Mingwei, XIA Anqing, YANG Yuan, WANG Yuliang, SANG Meng. Intra-domain routing protocol OSPF+ for integrated terrestrial and space networks. Journal of Tsinghua University(Science and Technology), 2017, 57(1): 12-17.
链接本文:  
http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2017.21.003  或          http://jst.tsinghuajournals.com/CN/Y2017/V57/I1/12
  图1 OSPF+系统结构
  图2 OSPF+邻居状态机
  图3 550s时卫星网络平面拓扑
  图4 轨道间链路连通情况
  图5 不同链路参数下的路由收敛时间与稳定性
  图6 路由收敛时间与稳定性随时间的变化
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