Making Sensornet MAC Protocols Robust Against Interference

Carlo Alberto Boano, Thiemo Voigt, Nicolas Tsiftes, Luca Mottola, Kay Römer, Marco Antonio Zúñiga


Radio interference may lead to packet losses, thus negatively affecting the performance of sensornet applications. In this paper, we experimentally assess the impact of external interference on state-of-the-art sensornet MAC protocols. Our experiments illustrate that specific features of existing protocols, e.g., hand-shaking schemes preceding the actual data transmission, play a critical role in this setting. We leverage these results by identifying mechanisms to improve the robustness of existing MAC protocols under interference. These mechanisms include the use of multiple hand-shaking attempts coupled with packet trains and suitable congestion backoff schemes to better tolerate interference. We embed these mechanisms within an existing X-MAC implementation and show that they considerably improve the packet delivery rate while keeping the power consumption at a moderate level.

Original languageGerman
Title of host publicationEWSN 2010: Wireless Sensor Networks
Number of pages17
Volume5970 LNCS
Place of PublicationBerlin
Publication date26.04.2010
ISBN (Print)978-3-642-11916-3
ISBN (Electronic)978-3-642-11917-0
Publication statusPublished - 26.04.2010
Event7th European Conference on Wireless Sensor Networks - Coimbra, Portugal
Duration: 17.02.201019.02.2010
Conference number: 79931

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