We address the problem of energy balancing in multi-hop wireless networks to optimize their operational lifetime. We first present a localized routing algorithm. Then, for a performance evaluation of the localized algorithm, we present a centralized routing algorithm because a centralized approach with global knowledge can closely approach the optimal solution. Unlike many previous energy-aware routing protocols, both of our presented algorithms consider total energy expenditure for guaranteed packet delivery. We use simulation to study their performance under a variety of network conditions. The simulation results show, firstly, that both schemes achieve significant improvement of energy balancing proportional to node density and, secondly, our proposed localized routing scheme achieves a performance comparable to the centralized scheme under dense networks.
Abstract-We explore the effect of certain network properties for energy balancing in wireless ad-hoc networks. We report the extent to which the improvement on energy balancing can be achieved by strategic placements of an additional relaying node in networks running energy-efficient routing protocols. Keywords: energy balancing, relaying node placement, wireless ad hoc networks.
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