The Game-based Analysis Of The Location Privacy Protection On The Dynamic Mix-zone With Variable Radius

The concept of the Network of Vehicles is an extension of the Internet of Things in intelligent transportation,a manifestation.It makes the information such as vehicle position,speed,ID,traffic conditions,signal lights,speed limit monitoring,etc.collected mainly through the vehicle and its on-board units,roadside units and other related equipment by the Internet technologies.It makes the entire traffic environment and driving environment having a better experience.Its specific forms of manifestation are:(1)Early warning of traffic accidents,reduction of accidents,improvement of traffic efficiency(2)Provision of personalized demand services to drivers,such as news,social networking,entertainment,etc..However,due to the large-scale network topology of the vehicle-mounted ad hoc network and the open wireless channel characteristics,the communication process will inevitably get various threats.Personal information such as vehicle user's identity information,location privacy,driving habits,etc.is easily exposed on the entire network,which will bring a lot of unnecessary trouble to users.Therefore,this article focuses on the in-depth research on the location privacy protection of vehicles.The main contents include the following aspects.(1)Carry out in-depth research on the status and development of the network of vehicle,gave a summary of the vehicle's location privacy protection framework and research methods,analyze the advantages and disadvantages of existing solutions,and explore the security holes that have not been resolved.(2)A variable radius position privacy protection solution is proposed.It is based on an anonymous change method to develop a variable radius mixed area solution by considering the dialectical relationship between location privacy and communication quality.The rigorous calculation and verification analysis shows that this scheme can maximize the benefits of users under the premise of ensuring security.(3)By using the idea of game theory,the vehicle nodes are honest,or selfish,to carry out strict modeling analysis,give proof for the equilibrium state under different situations,and then sum up a user to set up a mixed area or join the mixed area,and whether or not to choose an optimal scheme for renaming.Then it evaluates the possibility of this scheme from the influence of different parameters on user interests.Finally,a feasible change anonymity protocol is proposed to protect user location privacy.