Optimized Opportunistic Routing in Space-Sky Information Network Based on Mesh

Aiming at satisfying the requirement of diversified services and insufficient calculation ability in Space-based backbone Mesh network and solving the problem of not fully considering congestion control, unreliable acknowledgement and different service in requirement of QoS guarantee in the SOAR algorithm, this paper proposed a new opportunistic routing algorithm with reliable joint acknowledge and supporting multi-service. The algorithm defined expected successful transmission count to describe the integral state of links and effectively took the load balancing and link congestion control into consideration. The new algorithm designed an adaptive route selection to support diversified service. It achieved the self-adaptation control between route selection and diversified services. Simulation results show that the algorithm in the paper has better preference in adaptively selecting the best transmission path according to the difference of service. What's more, the algorithm in the paper has better preference in the transmission delay, the throughput and the throughput rate than the SOAR routing algorithm.