Distributed Storage Management of Evolving Files in Delay Tolerant Ad Hoc Networks

— This work focuses on a class of distributed storage systems whose content may evolve over time. Each component or node of the storage system is mobile and the set of all nodes forms a delay tolerant (ad hoc) network (DTN). The goal of the paper is to study efficient ways for distributing evolving files within DTNs and for managing dynamically their content. We specify to dynamic files where not only the latest version is useful but also previous ones; we restrict however to files where a file has no use if another more recent version is available. The DTN is composed of fixed number of nodes including a single source. At some points in time the source makes available a new version of a single file F . We consider both the cases when (a) nodes do not cooperate and (b) nodes cooperate. In case (a) only the source may transmit a copy of F to a node that it meets, while in case (b) any node may transmit a copy of F to a node that it meets. Scenario (a) is studied under the assum...

• Type: Conference
• Year: 2009
• Where: INFOCOM
• Authors: Eitan Altaian, Philippe Nain, Jean-Claude Bermond
• Keywords: Ad Hoc, Communications, Delay Tolerant, INFOCOM 2009, Node