Versatile Low Power Media Access for Wireless Sensor Networks

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Versatile Low Power Media Access for Wireless Sensor Networks (2004)

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by Joseph Polastre , Jason Hill , David Culler

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1093 - 18 self

BibTeX

@MISC{Polastre04versatilelow,
    author = {Joseph Polastre and Jason Hill and David Culler},
    title = {Versatile Low Power Media Access for Wireless Sensor Networks},
    year = {2004}
}

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Abstract

We propose B-MAC, a carrier sense media access protocol for wireless sensor networks that provides a flexible interface to obtain ultra low power operation, effective collision avoidance, and high channel utilization. To achieve low power operation, B-MAC employs an adaptive preamble sampling scheme to reduce duty cycle and minimize idle listening. B-MAC supports on-the-fly reconfiguration and provides bidirectional interfaces for system services to optimize performance, whether it be for throughput, latency, or power conservation. We build an analytical model of a class of sensor network applications. We use the model to show the effect of changing B-MAC’s parameters and predict the behavior of sensor network applications. By comparing B-MAC to conventional 802.11inspired protocols, specifically S-MAC, we develop an experimental characterization of B-MAC over a wide range of network conditions. We show that B-MAC’s flexibility results in better packet delivery rates, throughput, latency, and energy consumption than S-MAC. By deploying a real world monitoring application with multihop networking, we validate our protocol design and model. Our results illustrate the need for flexible protocols to effectively realize energy efficient sensor network applications.

Keyphrases

wireless sensor network low power medium access sensor network application energy consumption b-mac support on-the-fly reconfiguration flexible interface low power operation wide range protocol design bidirectional interface b-mac flexibility result power conservation ultra low power operation multihop networking real world idle listening experimental characterization packet delivery rate duty cycle effective collision avoidance energy efficient sensor network application carrier sense medium access protocol flexible protocol system service b-mac parameter analytical model network condition high channel utilization

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