Benefits of multiple battery levels for the lifetime of large wireless sensor networks

Authors:
Mihail L. Sichitiu;Rudra Dutta
Affiliations:
Electrical and Computer Engineering dept., North Carolina State University, Raleigh, NC;Computer Science dept., North Carolina State University, Raleigh, NC
Venue:
NETWORKING'05 Proceedings of the 4th IFIP-TC6 international conference on Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communication Systems
Year:
2005

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Abstract

In large wireless sensor networks, the few nodes close to the monitoring station are likely to prove the bottleneck in the useful lifetime of the network. We examine a strategy of equipping these nodes with a larger share of the total initial energy (battery) than the others, and generalizing this notion to the rest of the network. We solve a design problem involving optimizing the network lifetime using no more than a given number of distinct battery levels, and verify the results from the model by direct simulation.