| Wireless sensor network is a intelligent information system intimately relating to the internet of things,and is able to collect,transmit and compute process data information,which is the powerful tool of the new-generation distribution processing system.Due to the powerful function and allocation of wireless sensor network,the wireless sensor network has been frequently used to transmit messages in various areas in recent years,but network security issues are gradually exposed in the information transmission process.Due to the particularity of sensor node energy,computing and memory limit and the deployment environment,the working environment of the wireless sensor network is changeable and complex and is easily attacked and destroyed by enemy due to the sensor node lacking physical protection.This paper studies the issue aiming at the enemy with using clone node to influence the normal operation of wireless sensor network.If a certain sensor node is captured by the enemy,the enemy creates the clone node through information copy and reinjects it into the network.The clone node forms connection through neighbor node and other nodes in the network.The enemy can read important information in the network through reverse analysis technology so as to achieve goals of obtaining.This paper proposes an algorithm to detect clones based on ranging,including four rules.First of all,distribute the sensor node by complying to the LEACH clustering protocol.Based upon this,determine the detection radius to the specific detection range(group)according to the utility of the detection rule and the energy consumption in the detection process,and then make different detection rules according to the circumstance of clone node and real node distributing in one group,different group and one clustering and different clustering.Various detection rules coordinate with each other,adopt measures to remove nodes with the same ID,and prevent clone node from attacking network to guarantee the safety and reliability of wireless sensor network.Through the simulation experiment result,compared to the traditional clone detection method,this method decreases node energy consumption and transmission expenditure while increasing the detection success rate of clone node,which has extremely important meaning for the detection research of clone node. |
