无线传感器网络中一种基于接收功率异常的入侵检测算法

Intrusion Detection Algorithm Based on Reception Power Anomaly in Wireless Sensor Networks

虽然静态传感器节点计算能力和通信能力较差,但是它们具有自己独特的特征,可以获取比较稳定的临域节点信息。利用这个特征可以检测网络异常情况以及临域节点的通信行为,为传感器网络提供安全保障。为了使传感器节点能够检测出入侵者,需要先建立一种简单的基于临域节点的动态统计模型,然后用一种低复杂度的检测算法监测已接收到的数据包的接收功率。首先介绍了一种基于无线传感器网络安全的入侵检测算法,然后介绍了一种基于该算法的节点协作检测技术,节点协作指的是对攻击的联合确认,以及邻居节点共同反抗入侵者的协作行为。

Abstract Although static sensor nodes have low computation and communication capabilities, but they have specific properties, and can acquire stable neighborhood information, which can be used for detection of anomalies in networking and behaviors of the neighbor nodes, to provide security for wireless sensor network. To make a sensor node capable of detecting an intruder, a simple dynamic statistical model of the neighboring nodes is needed to build, with a low-com- plexity detection algorithm to monitor received packet power levels. A detection algorithm based on security scheme for wireless sensor networks was introduced, and then a novel node cooperative detection technology based on this detection algorithm, which refers to affirm and stand against intrusion together, was proposed.