Load-balanced cooperative transmission in MEO-LEO satellite network

In the satellite network system, space information resources are limited and satellite link connectivity is unstable, making satellites underperforming in communications services that support high-quality services. On the other hand, satellite network users are unevenly distributed and satellite nodes move rapidly, causing local congestion in satellite networks. Many domestic and foreign researchers proposed many solutions for single-layer satellite network routing in view of the above, but they still need to be supplemented and improved in handling multi-layer satellite network routing. Therefore, it is necessary to combine the dynamics of satellite movement, consider the optimization of satellite topology, reduce the unnecessary topology snapshot switching to improve the efficiency of satellite system. In addition, many satellite network routing algorithms perform routing table computation through dynamic information collection, lacking corresponding load balancing mechanisms. In this paper, a new scheme for load-balanced cooperative data transmission scheme in LEO/MEO satellite is proposed, in which the two-layer satellite topology is optimized and the corresponding congestion control mechanism is provided to provide QoS satellite service.