Robust Energy-based Target Localization in Wireless Sensor Networks in the Presence of Byzantine Attacks
Zhenxing Luo
Zhenxing Luo, Department of Electrical and Computer Engineering, The University of Alabama at Birmingham, Birmingham, AL, USA.
Manuscript received on august 02, 2012. | Revised Manuscript received on august 14, 2012. | Manuscript published on august 29, 2012. | PP: 12-19 | Volume-1 Issue-3, February 2012. | Retrieval Number: B0200071312/2012©BEIESP

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Abstract: This paper presents a robust energy-based target localization method in wireless sensor networks (WSNs) in the presence of Byzantine attacked sensors. Byzantine attacks will cause sensors to send false information to the fusion centre and disturb the target localization method. Therefore, a robust energy-based target localization method is needed to counter the Byzantine attacks and a method is presented in this paper. The method presented in this paper assumes that the fusion centre knows the exact information about the percentage of Byzantine sensors and the attack probability. If the fusion centre does not know the Byzantine attack information, a Byzantine sensor identification scheme can be used to identify Byzantine sensors. Results showed the robust energy-based target localization method could provide better performance results than the energy-based target localizatin method, which did not consider Byzantine attacked sensors. Moreover, simulation results showed that the Byzantine sensor identificaiton scheme could identify most Byzantine attacked sensors.
Keywords: Byzantine sensors, Cramer-Rao lower bound, maximum likelihood estimation, reputation value