Boano, Carlo Alberto and Voigt, Thiemo and Tsiftes, Nicolas and Mottola, Luca and Römer, Kay and Zuniga, Marco (2010) Making Sensornet MAC Protocols Robust Against Interference. In: 7th European Conference on Wireless Sensor Networks, 17-19 Feb 2010, Coimbra, Portugal.
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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.
|Item Type:||Conference or Workshop Item (Paper)|
|Uncontrolled Keywords:||wireless sensor networks, MAC protocols, interference, robustness|
|Deposited By:||Nicolas Tsiftes|
|Deposited On:||18 Feb 2010 13:39|
|Last Modified:||08 Jan 2015 15:54|
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