Making Sensornet MAC Protocols Robust Against Interference

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
ID Code:3810
Deposited By:Nicolas Tsiftes
Deposited On:18 Feb 2010 13:39
Last Modified:08 Jan 2015 15:54

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