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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...
Present approaches to achieve k-coverage for Wireless Sensor Networks still rely on centralized techniques. In this paper, we devise a distributed method for this problem, namely Distributed VOronoi based Cooperation scheme (DVOC), where nodes cooperate in hole detection and recovery. In previous Voronoi based schemes, each node only monitors its own critical points. Such methods are inefficient for...
In this paper, we focus on the efficient routing of data among different areas in delay tolerant networks (DTNs). In current algorithms, packets are forwarded gradually through nodes with higher probability of visiting the destination node or area. However, the number of such nodes usually is limited, leading to insufficient throughput performance. To solve this problem, we propose an inter-landmark...
One primary goal in P2P networks is to provide high search performance for users to retrieve interested documents distributed over nodes. Document indexing is the key to search performance. However, it is challenging to guarantee high search performance with small document index. In this paper, we present iSearch which aims to build small document index to deliver high search performance on Gnutella-like...
Grid information service is an inherent component of a grid system which collects resource data and provides search functionality. In addition to efficiency, fidelity in discovering desired resources is also an important metric to evaluate the service quality. Recently, a number of grid information service systems have been proposed based on DHTs. However, these systems either achieve high fidelity...
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