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In operational P2P networks, an overlay topology needs to be constructed on the top of IP networks. Existing methods for the construction have limited self organizing behavior and some security problems. In this paper, we propose an algorithm of two parameters to construct a scale free topology for P2P networks in a self organizing manner. The emergence of scale free topologies from the algorithm...
In a P2P file-sharing system, a node finds and retrieves its desired file. If multiple nodes cache the same file to provide others, we can achieve a file-sharing system with low latency and high file availability. However, a node has to spend costs, e.g., processing load or storage capacity, on caching of a file. Consequently, a node may selfishly behave and hesitate to cache a file. In such a case,...
Simultaneous overlay networks compete for physical network resources and disrupt each other. If they could establish cooperative relationships, the collective performance can be improved and they can coexist peacefully and comfortably. Taking inspiration from biology, in this paper we present a model of symbiotic overlay networks. Coexisting overlay networks dynamically evolve, interact with each...
Since a peer searches for its desired file in a P2P file sharing system, the structure of an overlay network determines the effectiveness of search. In this paper, based on the Barabasi-Albert (BA) model, we propose a novel scheme (LLR) to construct a low-diameter and location-aware overlay network where peers can easily find physically-close file holders. LLR has a rewiring method to improve the...
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