D-S based Fusion Method for Against Malicious Nodes in Wireless Sensor Networks
Qiao Tian, Pengwan Qin, Meiyu Wang, Yang Liu · 2020
Malicious nodes attacks pose a great security threat to the multi-sensor networks, especially the fusion result of the fusion center. Dempster-Shafer (D-S) evidence theory is a very effective fusion method, but conflict evidences brought by malicious nodes will greatly affect the accuracy of traditional D-S fusion method. Based on the above considerations, this paper adopts an improved D-S evidence theory method, which can intelligently reduce the influence of malicious nodes on the decide results during the fusion process, thereby improving the security of the entire wireless sensor networks. Finally, several examples are carried out on the background of network security situational awareness, which proves the feasibility of the proposed method.