Research On Source Location Privacy Protection In Wireless Sensor Networks

Wireless sensor networks are widely used in military,intelligent transportation,animal monitoring and other fields.In target monitoring wireless sensor networks,due to its wireless,multi-hop communication characteristics,it is easy to cause serious location privacy leaks,which endangers the security of monitoring targets.Therefore,protecting the location privacy of source nodes in wireless sensor networks is of great significance for the large-scale application of wireless sensor networks in target monitoring.Because of the limited computing,storage capacity and limited energy of sensor nodes,the protection strategy of protecting source node location privacy while taking into account network energy consumption has become a research hotspot of source location privacy protection in wireless sensor networks.In this paper,the source location privacy protection in wireless sensor networks is studied.The main work is as follows:? The background and significance of the research on source location privacy protection are elaborated;the categories and characteristics of privacy protection in wireless sensor networks are summarized,the attack methods commonly used by attackers are described;and the existing source location privacy protection schemes and shortcomings are analyzed.? To solve the problem that routing path was limited to a certain area,a source location privacy protection scheme based on distance and node energy(SLPDNE)was proposed.The scheme avoided the generation of waste paths and made the distribution of phantom nodes geographically diverse by randomly selecting phantom nodes outside the visual area of source nodes in the network.Then,in the routing path from source node to phantom node,node energy and distance information were taken as the basis for calculation,and the node with sufficient energy and close distance to the phantom node were selected as the next hop routing node to form a diffusive routing between the source node and the phantom node,which avoided the selection of nodes with less energy and increases the diversity and dynamics of routing path.Theoretical analysis and experimental results showed that this scheme could effectively prolong the security time of source node,and enhance the sourcelocation privacy protection capability in the network without significantly increasing the network energy consumption.? Based on the SLPDNE scheme and the ant colony algorithm,a SLPDNE-ACA scheme was proposed.In this scheme,ant colony algorithm was introduced into source location privacy protection,which combined with phantom routing strategy to balance the energy consumption of network nodes while protecting source location privacy.In this scheme,the probability of the next hop node was calculated according to the pheromone quantity between the neighbor nodes,the distance from the phantom node and the energy of the neighbor node,and the next hop node is randomly selected,in the decentralized routing stage from the source node to the phantom node.The simulation results showed that this algorithm can effectively balance the energy consumption between nodes and prolong the network lifetime.