Self-healing sensor networks with distributed decision making
by Xiaojiang (James) Du, Ming Zhang, Kendall E. Nygard, Sghaier Guizani, Hsiao-Hwa Chen
International Journal of Sensor Networks (IJSNET), Vol. 2, No. 5/6, 2007

Abstract: Sensor random locations and sensor failures can cause coverage holes, routing voids and disconnections and thus degrade sensor network performance. In this paper, we present a self-healing approach that utilises a few mobile sensors to deal with the problems. A mobile sensor can move to an area with a coverage hole or routing void and significantly improve network performance. We design distributed algorithms to detect coverage holes, estimate hole size and repair holes. A mobile sensor may receive multiple repair requests from different areas and it may not have complete information of the network. We present a fuzzy-logic-based distributed decision-making algorithm for mobile sensors. Extensive simulations demonstrate the good performance of proposed algorithms.

Online publication date: Tue, 03-Jul-2007

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