基于累积信誉和路径递减的无线传感器网络可靠路由方法

A Reliable Routing Approach for Wireless Sensor Networks Based on Cumulative Reputation and Path Reduction

在无线传感器网络中,某些节点会在路由数据时选择性转发数据包以节约自身能量;或者恶意丢弃某些数据以对网络进行破坏。这些路由节点的不良行为会使网络中传递的数据缺乏安全性;也使得网络变得不可靠,易受到各种攻击。针对无线传感器网络节点数据路由时存在不良行为的问题,提出一种基于累积信誉和路径递减的可靠路由方法。首先是根据统计学中负二项分布原理,对参与数据路由的节点进行信誉评价;并选取满足一定信誉条件的节点作为路由节点。然后通过路径递减方法对数据进行路由,目的是避免过多的中间节点,最后将数据包以可靠的方式通过最短的路径路由到目的地。实验测试结果表明所提方法在网络中存在恶意路由节点情况下,能够较好地提高数据包投递率,以及减少数据包到达目的节点的平均跳转次数,提高了数据路由的可靠性。

In wireless sensor networks,some nodes will selectively transmit data packets when routing data to save their energy,or maliciously drop data to destroy the network.The bad behavior of these routing nodes can make the data transmitted in the network lack security,and make the network unreliable and vulnerable to various attacks.To tackle the problem of bad behavior in wireless sensor network during data routing,a reliable routing approach was proposed based on cumulative reputation and path reduction.According to the principle of negative binomial distribution in statistics,the proposed method evaluates the reputation of nodes involved in data routing,selects those who satisfy a certain reputation condition as the routing nodes,routes the data through the method of path reduction so as to avoid too much intermediate nodes,and finally makes the data packets reach the destination in a reliable way through the shortest path.The experimental results show that when the malicious routing nodes exist in the network,the proposed method can improve the packet delivery rate and reduce the average hop times to the destination,which improves the reliability of data routing.