Study on the Coverage of Adaptive Wireless Sensor Network Based on Trust

Wireless sensor network coverage is a core problem of wireless sensor network and the deployment performance of the nodes directly influence the entire WSN. However, the nodes are extremely vulnerable to attacks or intrusion during the process of covering. Therefore, how to ensure the communication security and coverage reliability of the WSN under attack is a big challenge. To address it, this paper proposes an adaptive intrusion tolerant coverage method of WSN based on trust through combining an optimization algorithm with the trust model. Firstly, the method evaluates the trust degree of every node and then adjusts its perception radius and decision radius according to the value. Combined with the improved PSO algorithm, we implement the adaptive intrusion tolerant coverage of WSN. The proposed method is tested and compared with the traditional coverage methods, and it demonstrates that when WSN is attacked, the presented method is more security and has a better coverage.