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Directional data traffic and the total power consumption of a cluster are usually overlooked in traditional energy-efficient clustering algorithms for homogeneous sensor networks. This paper proposes to balance power consumption throughout the network and to reduce the total power consumption of the cluster. The clusters are organized in such a way that their lifetimes are equalized by making the total power consumption proportional to the energy stored. Furthermore, the clusterheads are maintained at the centre of the cluster without re-organizing the clusters to reduce the total power consumption of the cluster. Performance evaluation shows that the proposed clustering algorithm indeed improves energy efficiency for sensor networks.
Date of Conference: 21-25 Sept. 2007