低轨层内星际链路的一种新的链路重构算法

Novel Link-Reconfiguration Algorithm on Low Orbit Intra-layer Inter-Satellite Link

在空间网络中,为了解决与故障卫星节点相连的星间链路失效而导致的传输延时大幅增加问题,提出了一种新的链路重构算法。该算法在对节点连接度上限约束的同时,保障了链路延时最小,进而完成了受故障卫星节点影响的链路的重建。利用STK仿真软件构建了网络拓扑及链路重构过程,进而利用OPNET仿真软件完成了算法的性能仿真验证。仿真结果表明,使用新链路重构算法减小了空间网络的端到端链路时延,从而保证了空间网络的稳定性。

A novel link-reconfiguration algorithm is proposed to solve the problem that the transfering delay in- creases caused by failed Inter-Satellite-Links linked with fail satellites in Space Network. The algorithm limits the connectivity degree of nodes, guarantees minimum link delay, and rebuilds the links affected by fail satellite nodes. The article constructs network topology and the whole link-reconfiguration process by STK simulation software, and then completes performance simulation of the algorithm by OPNET simulation software. The result from the simulation has shown that the novel link-reconfiguration algorithm reduces the end-to-end link delay in Space Network, thus, keeps Space Network stable.