一种卫星网络的轻量化可控选路机制
A Lightweight and Controllable Routing Mechanism for Satellite Network
董新微 1陶鹏 1罗义钊 1张济勇 2汪加杨1
作者信息
- 1. 安徽继远软件有限公司,合肥 230097
- 2. 国网经济技术研究院有限公司,北京 102200
- 折叠
摘要
为了在资源受限和性能不足的卫星网络上承载高可靠、低延迟的工控业务流,提出一种"回避式"轻量化高可控星间分段路由选路机制.该机制利用快照或星间路由协议获取全网拓扑信息,根据最短优先路径中的风险节点分布特征计算高优先级路径;然后,采用IPv6 段路由技术精确指定路径.鉴于星间带宽有限,提出了适配不同拓扑特征的轻量化段路由扩展头压缩算法,通过与原始最短优先路径进行二分比对,扩大连通路径的搜索范围,实现简洁节点压栈.实验结果表明,该机制的段路由扩展头平均压缩率可达55%,内存开销小于3.5 MB.
Abstract
In order to carry highly reliable and low-latency industrial control business flows on resource-constrained and weak-performance satellite networks,an"avoidance"lightweight and highly controllable intersatellite segment routing selection mechanism called avoidance segment routing is proposed.This mechanism uses snapshots or intersatellite routing protocols to obtain entire networktopology informationand calculates the high-priority path according to the distribution characteristics of risk nodes in shortest first paths.Finally,segment routing technology over IPv6 is used to accurately specify the path.In view of the limited intersatellite bandwidth,a lightweight segment routing header compression algorithm adapted to different topological characteristics is also proposed.By performing binary comparison with the original SPF path and expanding the search range of the connected path,a simpler node stack is achieved.Experimental results show that the average compression rate of SRH of AVSR can reach 55%,with memory overhead below 3.5 MB.
关键词
星间路由/多路径路由/可靠传输/分段路由Key words
inter-satellite routing/multi-path routing/reliable transmission/segment routing引用本文复制引用
出版年
2024
NETL
NSTL
万方数据