Versatile Low Power Media Access for Wireless Sensor Networks

Versatile Low Power Media Access for Wireless Sensor Networks. Polastre, J., Hill, J., & Culler, D. In Proceedings of the International Conference on Embedded Networked Sensor Systems (SenSys), of SenSys '04, pages 95-107, 2004. ACM.

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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 802.11-inspired protocols, specifically SMAC, 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.

@inProceedings{
 title = {Versatile Low Power Media Access for Wireless Sensor Networks},
 type = {inProceedings},
 year = {2004},
 identifiers = {[object Object]},
 keywords = {low-power,mac,manet,network,protocol,sensor-network,wireless,wlan,wsn},
 pages = {95-107},
 websites = {http://dx.doi.org/10.1145/1031495.1031508},
 publisher = {ACM},
 city = {New York, NY, USA},
 series = {SenSys '04},
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 abstract = {We propose <i>B-MAC</i>, 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, <i>B-MAC</i> employs an adaptive preamble sampling scheme to reduce duty cycle and minimize idle listening. <i>B-MAC</i> 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 <i>B-MAC</i>'s parameters and predict the behavior of sensor network applications. By comparing <i>B-MAC</i> to conventional 802.11-inspired protocols, specifically SMAC, we develop an experimental characterization of <i>B-MAC</i> over a wide range of network conditions. We show that <i>B-MAC</i>'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.},
 bibtype = {inProceedings},
 author = {Polastre, Joseph and Hill, Jason and Culler, David},
 booktitle = {Proceedings of the International Conference on Embedded Networked Sensor Systems (SenSys)}
}

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