摘要：Aiming at the interval connectivity and the limitation of available storage and internodes throughput in delay tolerant network, this paper designs a kind of Density-Aware Routing Scheme (DARS) for its messaging service. According to the density of nodes, the direction that messages are forwarded to the dense area is decided. The change of correlation time between networks is used to evaluate local density and decide how to exchange information with a certain node met in the process of moving. Simulation results show that the proposed scheme has simplicity and low complexity. In the delay tolerant network of non-uniform node distribution, the message transfer rate and communication overhead get fairly good effect.
关键词：Router;Delay Tolerant Network;Messaging;Correlation Time
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