Research on Location Privacy Protection Methods for Mobile Users in 5G Environment

To solve the location privacy disclosure problem with location based service(LBS)applied frequently in 5G environment, the risks of mobile users' location privacy disclosure in 5G environment were analyzed, the existing privacy protection technologies were investigated, and three kinds of common privacy protection methods were summarized and compared. A new privacy protection method called fusion location privacy protection method was proposed, aiming at the new challenges of location privacy protection in 5G environment. By the combination of preliminary dimension reduction treatment, location privacy protection algorithm, and transmission encryption method, the method was arranged to reduce the risks during location dimension selecting, positioning and transmitting process without increasing the complexity. Simulation results indicate that the proposed method can perform well in mixed scenarios and be suitable for the dense, high frequency LBS in 5G environment. © 2021, Editorial Department of Transaction of Beijing Institute of Technology. All right reserved.