Towards Energy Efficient Design of Multi-Radio Platforms for Wireless Sensor Networks

Dimitrios Lymberopoulos, Nissanka B. Priyantha, Michel Goraczko, and Feng Zhao

Abstract

We study the problem of concurrently supporting multiple radios with different capabilities and interfaces on a single sensor node platform. Through a detailed experimental study on hardware multi-radio platforms, using the two representative radio technologies 802.15.4 and 802.11, we identify bottlenecks and design tradeoffs that are usually overlooked and that, as we show, have a significant impact on the sensor network"s performance and energy efficiency. Our findings are threefold. We show that a proper pairing of processor and radio is crucial for taking the full advan-tage of the energy efficiency of higher bandwidth radios. The processor/radio pairing affects the energy balance of a sensor node, thus making the design of dynamic switch-ing among multiple radios more challenging. Second, we demonstrate and quantify the impact of network traffic on energy consumption of a sensor node while varying net-work parameters, and illustrate the deficiency of existing energy-optimizing protocols. Our results in

Details

Publication typeInproceedings
Published inInternational Conference on Information Processing in Sensor Networks (IPSN '08)
PublisherAssociation for Computing Machinery, Inc.
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