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Energy aware routing for low energy ad hoc sensor networks

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2 Author(s)
Shah, R.C. ; Berkeley Wireless Res. Center, California Univ., Berkeley, CA, USA ; Rabaey, J.M.

The recent interest in sensor networks has led to a number of routing schemes that use the limited resources available at sensor nodes more efficiently. These schemes typically try to find the minimum energy path to optimize energy usage at a node. In this paper we take the view that always using lowest energy paths may not be optimal from the point of view of network lifetime and long-term connectivity. To optimize these measures, we propose a new scheme called energy aware routing that uses sub-optimal paths occasionally to provide substantial gains. Simulation results are also presented that show increase in network lifetimes of up to 40% over comparable schemes like directed diffusion routing. Nodes also burn energy in a more equitable way across the network ensuring a more graceful degradation of service with time.

Published in:

Wireless Communications and Networking Conference, 2002. WCNC2002. 2002 IEEE  (Volume:1 )

Date of Conference:

17-21 Mar 2002