Une approche robuste pour la prolongation de la durée de vie des réseaux ad hoc multimédias

• Authors: J. M. Bahi;M. Eskandar;A. Mostefaoui
• Venue: UbiMob '08 Proceedings of the 4th French-speaking conference on Mobility and ubiquity computing
• Year: 2008

In wireless ad hoc networks, nodes are energy constrained. As they communicate far off destinations using intermediate relays, it may not be in interest of a node to expend its energy in relaying and consequently reducing its own lifetime. On the other hand, if all nodes decide not to always accept relay requests, the network throughput will drop dramatically i.e., the lifetime of the whole network is reduced. Obviously, from a single node point of view, these two extreme attitudes are opposite to its interest. We addressed this issue by proposing a novel distributed approach that guarantees tasks affectation to nodes with regard to their energy constraints. The key idea behind is to guarantee to all nodes that they share tasks in function of their energy provisions. In this paper, we tackle the problem of nodes mobility and its impact on the behavior of our proposed approach. We evaluated the performance of our approach under several scenrios and showed that it still improves the network lifetime.