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After wormhole attacks the routing mechanism of wireless sensor network (WSN) is damaged, then the hop count and distance between nodes cannot be well matched, so that the WSN becomes the anisotropic sensor network, resulting in security treats for WSN. Considering that wormhole attacks can cause the changing of node connectivity, through the theoretical analysis and derivation, the paper has proposed...
In delay tolerant networks (DTN), flooding mechanism in epidemic routing protocol may waste network resources. Based on introducing and analyzing routing protocols in DTN, this paper proposes an improved protocol of epidemic routing (EPI-HT). EPI-HT forwards messages accurately to the next-hop according to historical information between nodes and node localization principle. Simulation results indicate...
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