Research On Location Privacy Protection Model And Algorithm Based On Anonymous Area Scaling

With the fast development of location technology and wireless communicationtechnology,users can enjoy the location-based services wherever and whenever they are.Butunfortunately,users have to send their locations to service providers before requestlocation-based services,which can cause users’ position information leak to the maliciousattackers.After malicious attackers get users’ locations,they can do physical attack topersonals or peculate the users’ personal privacy towards the users’ whereabouts，thereforeit is the most urgently thing to study technologies and methods to protect people’s locationprivacy.There already some research on location privacy protection, from the proposedlocation privacy protection algorithm,we can know that the quality of the service and thedegree the algorithm protecting the privacy is a pair of contradictory, the aim of studyinglocation privacy algorithm is to provide users as high as possible the quality of serviceunder the least exposure of the privacy.In this paper,I do thorough research on location privacy systems and location privacytechnologies, analyzes the advantages and disadvantages of each system structure andexisting technology,finally proposing one location privacy protection model based onAnonymous Area Scaling to protect people s location privacy. With the process ofAnoymous Area Scaling algorithm,the user’s actual location is not in the cloakingregion,which can increase the difficulty of attackers’infering the user’s actual position.Themodel also proposes the Neighbour Objects Processing algorithm,which can help figure outthe right result quickly from the candidate results. Based on Anoymous Area Scalingalgorithm,I also do analysis on the privacy threats in users’ continuous query, accordingdoing grid division to physical space,adding inquire model and inquire shared storage,whichcan help quickly locating sharing positions and service results when searching anonymoususers,therefore the model can help reducing the number of location anonymous and thenumber of visiting the service providers,it helps resovle the problem that the highbandwidth consumption in mobile environment,so it enhances the anonymous efficiency.The model can ensure that it is difficult for the attacker to get the position of the userinformation when users issue continuous query in the same location or users who always update their locations,so that it cannot link the position information, so as to protect thelocation privacy in continuous query.In this paper,I do theoretical analysis and experiment on Anoymous Area Scalingalgorithm in the location privacy protection model and the experimental results show thatthe proposed method in this paper have a better performance in low communicationoverhead and precision rate than Cloaking Region and SpaceTwist.