Abstract
Mobile ad hoc networks (MANET) are non-infrastructure networks, which consist of mobile nodes. Energy conservation is a critical issue in ad hoc wireless networks for node and network life, as the nodes are powered by batteries only. In order to maximize the lifetime of ad hoc networks, traffic should be sent through a shortest path that does not contain nodes with low residual energy and which consumes minimum total transmission power. The above objectives cannot be satisfied simultaneously by applying the existing power aware routing algorithms. For this reason, several power-aware routing approaches have been proposed in the literature attempting to maximize the network lifetime. An interesting approach called minimum drain rate (MDR) aims to predict the lifetime of nodes according to the current traffic conditions. However, it does not guarantee that the total transmission power is minimized over a chosen route. In this paper, we provide a modified version of this algorithm called extended optimal energy drain rate (EOEDR), able to extend the battery life and duration of the path, and also to minimize the total transmission power consumed per packet. We compare our algorithm performances with the existing ones' using the NS-2 simulator.
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