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Partage De Données En Mode Pair A Pair Sur Réseaux Mobiles Ad Hoc

Abstract : Designing software for mobile ad hoc networks presents news challenges : in a manet, devices are mobile, resources are scarce and in absence of infrastructure, everything is decentralized. Therefore, a new algorithmic, adapted to manet, has to be defined. This thesis proposes a set of algorithms for developing a distributed data sharing system for manets: - a clustering algorithm to create groups of terminals stable over time. This algorithm's main advantage is that it does not create any network load since it uses cross-layering information from the routing layer to know which terminals are reachable. - a proactive replication algorithm, which, for each data, creates and maintains a number of replica proportional to the number of terminals, that it places on the devices where they are most likely to be used. This algorithm enhances data availability and data sharing reliability. - a cache management algorithm which tries to regulate the best number of replica so as to optimize the use of the network, while maintaining data availability. First of all, when a cache replacement is needed, the algorithm eliminates data less recently used, and for which the number of replica is high enough to maintain availability. It also reduces the network load by removing useless replica which generate network traffic (not used by their host).
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Submitted on : Sunday, March 6, 2011 - 5:48:12 PM
Last modification on : Friday, July 31, 2020 - 10:44:07 AM
Long-term archiving on: : Tuesday, November 6, 2012 - 3:35:12 PM


  • HAL Id : pastel-00573976, version 1



Hoa Dung Ha Duong. Partage De Données En Mode Pair A Pair Sur Réseaux Mobiles Ad Hoc. Informatique mobile. Télécom ParisTech, 2010. Français. ⟨pastel-00573976⟩



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