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Journal of Sensors
Volume 2015, Article ID 430456, 10 pages
http://dx.doi.org/10.1155/2015/430456
Research Article

A Self-Adaptive Wireless Sensor Network Coverage Method for Intrusion Tolerance Based on Trust Value

1College of Computer Science and Electronic Engineering, Hunan University, Changsha, Hunan 410082, China
2Institute of Information Engineering, Chinese Academy of Sciences, Beijing 100093, China
3School of Education, Hubei University, Wuhan, Hubei 430062, China

Received 18 August 2014; Accepted 8 October 2014

Academic Editor: Fei Yu

Copyright © 2015 Zuo Chen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The sensor is quite easily attacked or invaded during the process of the node coverage optimization. It is a great challenge to make sure that the wireless sensor network could still carry out a secure communication and reliable coverage under the condition of being attacked. Therefore, this paper proposes a network coverage method for intrusion tolerance based on trust value of nodes by combining the trust value model with the reliable coverage optimization. It first estimates trust value of nodes through which to regulate the perception radius and decision-making radius. Furthermore, this algorithm also combines the classical methods of wireless network coverage, such as GSO and PSO, to realize the networks coverage of invasive tolerant sensor. After comparing with the conventional single cover mechanism, it can improve the security and coverage rate of network under the condition of invasion. The simulation results verify the effectiveness of the algorithm.