Research On Source Location Privacy Preserving For Wireless Sensor Network

In recent years,with the rapid development of modern science and technology,people have the high demand to get real-time data from many complex environments with high-efficiency.In this background,Wireless Sensor Network(WSN),which integrates sensor technology and wireless communication technology,develops rapidly and is applied to many domains such as military,environmental monitoring,Intelligent Transportation System,smart home et al.However,sensor nodes will reveal the privacy of their location to attackers easily because nodes are deployed in outdoor environment and transmit packet through wireless signal.Hence,research on source location privacy preserving technology has important implications for the large-scale deployment and application for WSN.This paper at first summarizes the problem of privacy preserving for WSN.Then,it analyzes the network model,two main attacker models of source location privacy preserving,and existing technologies for source location privacy preserving and their drawbacks.At last,this paper designs two source location privacy preserving protocols for different attackers with partial perspective respectively.To resist common partial attackers,the main strategy of existing research is random walk and energy consumption of route is uncontrollable.Hence,this paper designs S_CECRP and PR_CECRP to solve this problem based on strategy of controllable energy consumption.S_CECRP stores the value of energy consumption for privacy preserving into source data packet and make random path with limited energy consumption.PR_CECRP divided S_CECRP route process into two phases: directed random walk phase and controllable energy consumption route phase,and improve source location privacy further.Considering another kind of attacker with stronger attack ability,attackers with visible ability,existing research for source location privacy preserving has weak effect.Hence,this paper designs EMPR based on multiple phantom node strategy to resist this kind of attackers.Firstly,EMPR make two phantom nodes outside the visible area of source node during the triplet creating process at sink node.Then,source data packet is relayed outside the visible area of source node to avoid generation of waste paths from phantom node to sink.In addition,EMPR relays data packet based on sector region division strategy from source node to phantom node and controls transmission latency and energy consumption of route.