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In this paper, we focus on the multi-copy routing in Vehicle Delay Tolerant Networks (VDTNs). In current multi-copy routing, the different copies of each packet search the destination node independently, which leads to a low utilization of copies since they may search through the same path repeatedly without cooperation. To solve this problem, we propose a fractal Social community based efficient...
In this paper, we focus on designing an efficient routing method in Vehicle Delay Tolerant Networks (VDTNs) without centralized infrastructures. Current routing methods either have limited routing efficiency or need the help of centralized infrastructures to improve the routing performance, which is deviated from the goal of building VDTNs without centralized infrastructures. In this paper, we propose...
In delay tolerant networks (DTNs), enabling a mobile node to search and find another interested mobile node is an important function in many applications. However, the movement of nodes in DTNs makes the problem formidable. Current node searching methods in disconnected networks mainly rely on fixed stations in the network and infrastructure-based communication to collect node position information,...
Since centralized data storage and search schemes often lead to high overhead and latency, distributed data centric storage becomes a preferable approach in large-scale WSNs. However, most of existing methods lack optimization for spatial- temporal search and similarity search for multi-attribute data. Some methods are optimized under circumstances where nodes are equipped with locating systems (e...
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