Research On Privacy Protection Methods Of Users' Self-perceived Location

With the rapid development of Internet technology,the use of mobile terminals is becoming more and more popular.Through the Internet,Location Based Services has brought many conveniences to people's daily lives.Therefore,this technology has become a hot research topic.However,in this process,if the location information is exposed to untrusted third-party software or when an attacker changes personal information,it will inevitably have a serious impact on the user.Therefore,how to ensure the privacy of the user's location while enjoying the LBS service has become a problem studied by many scholars.This paper mainly studies the method of constructing anonymous areas in the protection of location privacy.At the same time,the quality of location privacy protection is improved by users self-perceiving the distribution of real users around them in advance.main tasks are as follows:1.This paper optimizes the structure of the anonymous area in the location privacy protection method.In this way,the query efficiency of the LBS server is improved and the communication overhead is reduced.Research has proved that anonymous area construction methods can directly affect the efficiency of location privacy protection.In an ideal environment,after a user requests a service,an overall anonymous area is formed,and sub-anonymous areas are formed by segmentation,and they do not overlap with each other and have no intersection.But in the actual situation,the possibility of such a situation is low.In this paper,by recalculating the randomly-divided sub-anonymous regions,the set of smallest sub-anonymous regions is obtained to complete the anonymous service.The simulation results show that the method used can not only protect the user's location privacy,but also effectively reduce the time for the server to query the area and improve the quality of service.2.This paper improves the authenticity of user anonymity through the user's self-perceived location privacy protection method.When using the LBS service,users will self-perceive the distribution of real users to form an anonymous area,and then randomly divide the anonymous area into several sub-anonymous areas,and analyze the distribution of users in each sub-anonymous area.Random filling,the user location information of each sub-anonymous area after filling is sent to the location providing server together.Simulation results show that the method used can effectively improve the quality of user anonymity,reduce the success rate of collusion attacks,and ensure the privacy and security of the user's location.