Because of the highly dynamic topology in the space-ground integrated information-centric network(SGI2CN),it is difficult to transmit content efficiently for the content-share paradigm.The area-divided-based inter-satellite routing(ADISR)mechanism is proposed to meet the multi-source content-share demand in SGI2CN.According to the given region division principle,a virtual node-based model is constructed for the SGI2CN.For intra-domain routing,dynamic routing is achieved using a link-state shortest path algorithm and state update algorithm,based on the content source location and cache updates.For inter-domain routing,a heuristic algorithm based on an auxiliary graph is proposed to enable cross-do-main data transmission by considering the status of both nodes and links.Simulation results demonstrate that ADISR re-solves the multi-source multi-path problem in SGI2CN,reducing packet loss rate,lowering content transmission delay,and increasing network throughput compared to existing routing mechanisms.
维普
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