Distributed Bayesian Algorithms for Fault-Tolerant Event Region Detection in Wireless Sensor Networks

  • Authors:
  • Bhaskar Krishnamachari;Sitharama Iyengar

  • Affiliations:
  • -;-

  • Venue:
  • IEEE Transactions on Computers
  • Year:
  • 2004

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Abstract

Abstract--We propose a distributed solution for a canonical task in wireless sensor networks--the binary detection of interesting environmental events. We explicitly take into account the possibility of sensor measurement faults and develop a distributed Bayesian algorithm for detecting and correcting such faults. Theoretical analysis and simulation results show that 85-95 percent of faults can be corrected using this algorithm, even when as many as 10 percent of the nodes are faulty.