A power-aware peer-to-peer system for ad-hoc networks

Recently, many peer-to-peer (P2P) systems have been introduced to implement large scale resource sharing systems. Such P2P systems exhibit interesting features like self configuration, self-healing and complete decentralization, which make the systems appealing for deployment in ad hoc environments as well. This paper proposes a power-aware peer-to-peer system specially designed for the ad-hoc networks based on Gnutella with hierarchical structure. The objectives of this paper is to enhance performance as well as to prolong the lifespan of the participating P2P nodes. To pursue the objectives, the proposed system chooses ultrapeers which can serve the overlay network better, by considering battery power, connectivity with other peers and commitment level of each node. It also introduces proactive approach for distributing ultra-peer information to reduce P2P overheads. According to the simulation results, the proposed system provides higher query success rate, shorter query response time, less overhead and extended lifespan of peers.