空军工程大学学报2025，Vol.26Issue(4)：58-67,10.DOI:10.3969/j.issn.2097-1915.2025.04.007
基于链路状态感知的卫星网络多路路由优化策略
An Optimization Strategy for Multi-Path Routing in Satellite Network Based on Link State Awareness
摘要
Abstract
Aimed at the problems that the transmission bandwidth in low earth orbit(LEO)satellite net-works is difficult to support the forwarding of large data volumes and make the links periodically discon-necting and reconnecting according to the needs,a satellite network multi-path routing optimization strate-gy is designed based on link state awareness.The dynamic topology of LEO satellites and the state of in-ter-satellite links are modeled,and an optimization of multi-path selection is constructed.In order to en-hance the efficiency of solving the optimization problem,a multi-path selection algorithm is devised based on state monitoring and path prediction.The algorithm is to utilize time slot partitioning of the topology for mitigating its dynamism and reducing complexity by screening inter-satellite links based on monitored states,and predicting link availability based on ephemeris data to avoid massive packet loss caused by link interruptions.On the computation phase,in comprehensive consideration of real-time link states such as transmission delay,transmission bandwidth,and transmission success rate,the optimal multiple paths are selected according to the load variations to increase the throughput of satellite networks and reduce trans-mission delay.The simulation results demonstrate that compared to the traditional routing algorithms such as contact graph routing(CGR),shortest path first(SPF),and equal-const multi-path(ECMP),when the load is 8 Gbps,the proposed scheme in the aspects of transmission delays,is 16.9％,11.4％,and 7.1％lower than the three algorithms respectively,and in terms of network throughput,is 34.4％,26.9％,and 15.6％higher than the three algorithms respectively.The transmission success rate is 15.3％,9.6％,and 5.6％higher than that of the three algorithms,respectively.关键词
卫星网络/动态拓扑/链路状态感知/传输时延/多路路由/传输带宽Key words
satellite network/dynamic topology/link state awareness/transmission delay/multi-path rou-ting/transmission bandwidth分类
信息技术与安全科学引用本文复制引用
张乐,李雨昂,阔永红,周雨晨,杨龙..基于链路状态感知的卫星网络多路路由优化策略[J].空军工程大学学报,2025,26(4):58-67,10.基金项目
国家自然科学基金面上项目(62371354) （62371354）
陕西省青年科技新星项目(2024ZC-KJXX-080) （2024ZC-KJXX-080）
陕西省重点产业创新链(群)项目(2023-ZDLGY-50) （群）
