面向空间延迟可容忍网络的路由协议仿真研究

随着空间通信的发展和卫星节点的增加,空间DTN网络中卫星节点之间的路由的重要性日益明显,大量复杂的卫星网络路由方案相继提出。针对空间DTN网络具有规律性与可预见性,研究了基于卫星节点运动接触规律 (CGR)路由协议。在ONE仿真实验平台下,对真实卫星网络场景进行了仿真实验,并对比了CGR、Epidemic与Prophet路由协议的性能。实验结果表明,相比于Epidemic与Prophet,CGR在消息交付率、平均延时和网络开销比等方面的性能优越。

Analysis of Routing Algorithm for Space Delay/Disruption Tolerant Network

With the development of space communications and the increasing number of satellites, routing between satellites in the space DTN (delay-tolerant network) network becomes more and more important. Thus, a large number of complex satellite network routing strategies have been proposed. Considering the regularity and predictability of space DTN networks, this paper examines the contact graph routing (CGR) protocol based on satellite regularities; the simulation tool ONE is adopted to simulate real satellite network scenarios. Simulation results show that the delivery ratio, average delay, and the network overhead ratio of CGR are better than those of the Epidemic and Prophet routing strategies.