面向航天器的时间敏感网络技术应用研究

Research on Application of Time Sensitive Network Technology for Spacecraft

针对航天器网络对于高带宽、低时延和确定性的要求,提出了时间敏感网络在航天器网络的应用方案。以时间敏感网络作为网络的骨干网,桥接传统航天网络总线,并对时间敏感网络机制在航天器上的应用进行适应性分析。仿真选取了简单网络拓扑、MIURA探空火箭和空间站网络拓扑,应用时间敏感网络技术,研究其对流量业务的端到端时延影响。仿真结果表明:通过合理时间敏感网络机制搭配,能够有效降低网络延迟,验证了在航天器网络上应用时间敏感网络的可行性。

To satisfy the high bandwidth,low delay and determinism requirements for the spacecraft network,the application of time sensitive network in spacecraft network was proposed.The time sen-sitive network was used as the backbone of the network,the traditional spacecraft network bus was bridged and a feasibility analysis on the application of the time-sensitive network mechanisms on the spacecraft was conducted.The simple network topology,MIURA sounding rocket and space station network topology were selected for simulation and the time sensitive network technology was adopted to study its end-to-end delay impact on traffic services.The simulation results showed that the net-work delay could be effectively reduced by a reasonable combination of time sensitive network mech-anisms.The feasibility of applying time-sensitive networks to spacecraft networks was verified.