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Malicious Node Detection Using Confidence Level Evaluation in a Grid-Based Wireless Sensor Network
Department of Computer Engineering, Hongik University, Seoul, Korea
Department of Computer Engineering, Hongik University, Seoul, Korea
- 1 Department of Computer Engineering, Hongik University, Seoul, Korea
- 2 Department of Computer Engineering, Hongik University, Seoul, Korea
Wireless Sensor Network·Volume 05 (2013)·Pages 52–60·Published 29 March 2013·DOI10.4236/wsn.2013.53007
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Abstract
In this paper, we present a malicious node detection scheme using confidence-level evaluation in a grid-based wireless sensor network. The sensor field is divided into square grids, where sensor nodes in each grid form a cluster with a cluster head. Each cluster head maintains the confidence levels of its member nodes based on their readings and reflects them in decision-making. Two thresholds are used to distinguish between false alarms due to malicious nodes and events. In addition, the center of an event region is estimated, if necessary, to enhance the event and malicious node detection accuracy. Experimental results show that the scheme can achieve high malicious node detection accuracy without sacrificing normal sensor nodes.
KeywordsSensor NetworksMalicious Node DetectionGrid-Based WSNFaultsConfidence Levels
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