A Novel Multi-service QoS Routing Algorithm for Inclined Low-orbit Constellations

The development of multimedia services and satellite networks has been rapid. While there is extensive research on multi-service QoS routing algorithms for terrestrial networks, there is little research on such algorithms for satellite networks. This paper presents a novel multi-service QoS routing algorithm designed for inclined low-orbit constellations. By employing multi-path routing pre-computation, congestion detection mechanisms, and customized distributed forwarding strategies for different services, the algorithm effectively meets diverse QoS requirements and mitigates network congestion. The algorithm's strengths lie in its low overhead, reduced processing delay, and simplicity, coupled with its ability to flexibly adapt to changing load conditions. Simulation results demonstrate the average packet loss rate of the loss-sensitive service is about 10% lower than that of Dijkstra. The average end-to-end delay of delay-sensitive service is about 40ms lower than that of Dijkstra.