The rapid advancement of communication and satellite technology drives broadband satellite networks to carry different traffic loads.However,traffic class routing of satellite cannot be provided by the existing 2-layerd satellite networks.In this paper,a 2-layered satellite network composed of low-Earth orbit and medium-Earth orbit satellite networks is presented,and a novel Self-adapting Routing Protocol(SRP)is developed.This scheme aims to adopt self-adapting routing algorithm to support different traffic classes.Meanwhile,the path discovery processing is invoked independently for each individual origin/destination pair.Simulation results are provided to evaluate the performance of the new scheme in terms of end-to-end delay,normalized data throughput,delay jitter and delivery ratio.
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