A Faulty Node Detection Algorithm based on Spatial-temporal Cooperation in Wireless Sensor Networks*

摘要

Wireless Sensor Networks (WSNs) consist of a large number of nodes with limited resources and widely used in social production and life, especially in harsh environments and real-time applications. The common sensor nodes transmit and send the sensed data to sink node, which is also called base station. Therefore, the error message transmitted may cause a serious incorrect decision making. Fast detection of faulty nodes can effectively improve the quality of service of WSNs applications. In this paper, a two-step faulty nodes detection algorithm based on spatial-temporal cooperation for wireless sensor networks is proposed. The detection process is executed by sink node and the detected faulty nodes information will be sent to the server. Simulation results show that the proposed algorithm can achieve high correct detection accuracy while maintaining a low false alarm rate, and has a strong fault tolerance ability.