Research On Source Location Privacy Protection Technology In Wireless Sensor Networks

With the development of communication technology and network technology,the Internet of things(IOT)is widely used in various industries.As the foundation of Internet of things,wireless sensor networks(WSNs)have been concerned by researchers.WSNs is composed of a large number of sensor nodes,which is used to complete environmental monitoring,information collection,regional monitoring and other tasks.The event source is closely related to the monitored object,and the information leakage of the source location means that the network privacy security will be directly threatened.Therefore,source location privacy protection(SLPP)has become a key issue to ensure the privacy and security of wireless sensor networks,which has important research value.The dynamic routing,random routing and multi-path technology is adopted in this paper to study new routing scheme to ensure the source location privacy.The main work is as follows:(1)In order to solve the problems of the path dynamic and the unbalanced energy consumption of existing privacy protection protocols,a ring routing protocol called RRDT based on dynamic token is proposed.In this scheme,the random token link is constructed by dynamic alternation mode of the start node.An event ring selection strategy is applied to increases the number of alternative loops by randomly selecting the location and clockwise direction of the event ring.The loop based multi-path routing method is used to increase the randomness of the path.Theoretical analysis and simulation results show that the protocol has better path dynamics and longer network lifetime in improving privacy protection intensity.(2)Aiming at the problems of low node utilization and insufficient security period in multi-base station and multi-attacker network environment,a source location privacy protection scheme based on multipath random routing(MRRPP)is proposed.The quadrant division mechanism is used to divide the network into quadrants according to the location of sink node,and the target sink node is selected randomly according to the distance from sink node.The data transmission relay node is selected randomly to further increase the dynamic of the path.The data is segmented by slicing technology and transmitted from different paths to reduce the probability of data being captured and balance the energy consumption burden of the path node.Finally,the data packets are transferred to the target sink by the way of hybrid transmission.The Simulation results show that the scheme balances the frequency of nodes and the network energy consumption by expanding the path dispersion,and improves the network life cycle and security cycle.