A membership management protocol for mobile P2P networks

Mohamed Karim Sbai 1 Emna Salhi 1 Chadi Barakat 1
1 PLANETE - Protocols and applications for the Internet
Inria Grenoble - Rhône-Alpes, CRISAM - Inria Sophia Antipolis - Méditerranée
Abstract : MANETs are self-organizing networks composed of mobile wireless nodes with often scarce resources. Distributed applications based on the P2P paradigm are the best candidates to run over such networks. To profit from the service provided by a P2P overlay (e.g. file sharing using BitTorrent), a node needs to be permanently informed about the other members of the overlay (e.g. other peers interested in the same file as currently provided by the BitTorrent central tracker). This P2P membership management is a costly and difficult task in such dynamic and resource limited environment. We focus on this problem and we propose a robust, network friendly and decentralized membership management protocol allowing peer discovery and update. Compared to flooding, client-server or multicast based approaches, our protocol achieves significantly lower network overhead and lower pollution of caches caused by peers who have left. Moreover, as network splits are very frequent in MANETs, our protocol is designed to be partition-aware. Namely, it allows separate overlays providing the same service to efficiently merge together when communication opportunities occur. The efficiency of our solution is validated through extensive NS-2 simulations.
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Mohamed Karim Sbai, Emna Salhi, Chadi Barakat. A membership management protocol for mobile P2P networks. [Research Report] 2008. ⟨inria-00342691v2⟩

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