基于D-S证据理论的网络链路扰乱方法

A Method of Disturbing Link Based on D-S Evidence Theory for Wireless Network

摘要: 节点间信号链路攻击对无线网络的可靠运行和安全保障具有极大的破坏作用。本文提出了一种基于D-S证据理论的无线链路攻击算法。该算法首先给出了网络节点周围链路重要性的形式化定义；利用基本信度函数计算直接重要程度，通过邻居节点的推荐获取间接重要程度；同时，根据Dempster组合规则对直接、间接重要性予以合成，从而得到链路数据传输过程中节点重要度排名。在此基础上，对重要度最高的节点进行攻击。仿真结果表明，本算法能够准确地攻击重要节点间链路，达到网络丢包率上升的效果。

Abstract: The attack of signal link between nodes has a great destructive effect on the reliable operation and security of the wireless network. In this paper, a wireless link attack algorithm based on D-S evi-dence theory is proposed. Firstly, the method gives the formal definition of the link importance around the network nodes, and uses the basic reliability function to calculate the degree of im-portance. Then, according to the importance of Dempster combination rule, the importance of direct and indirect synthesis is obtained, and the importance of nodes in the process of link data transmission is obtained. On this basis, the attack is applied to the highest node important degree. Simulation results show that the algorithm can accurately attack the link between nodes, and achieve the effect of increasing the packet loss rate.