Semantic Location Privacy Protection Based on Privacy Preference for Road Network

In recent years, with the popularization of mobile intelligent terminals, location-based services (LBS) have been widely used. When users enjoy the convenience of LBS, they also face with the risk of leakage of location privacy. Therefore, it is very important to provide effective privacy protection service during the use of LBS. Previous methods of location privacy protection cannot meet the requirements of users for location privacy protection and service qualities. For this reason, an adjustable semantic location privacy protection scheme is presented in this paper. According to the road network, this scheme introduces the privacy tolerance and the deficient number to select adjacent road segment to satisfy users' requirements. Experimental results show that the proposed scheme supports users' privacy preference for location privacy protection and the required quality of service, and fully considers the user's personalized privacy requirements.