Abstract:At present, most of the protection technology based on location privacy is designed for the user to carry out a single LBS request, it only protects the location of the current real user, but ignores the situation where the real user location is leaked by the cooperative user's overlapping when the real user is repeatedly queried. In this scenario, location prediction based on the real user position is used by the attacker to track the real user trajectories, resulting in the leakage of real user location privacy. In this study, a Location Privacy Protection Method Based on Similar Path (LPBSP) is proposed when the user initiates a continuous LBS request. Firstly, a certain equilibrium process is carried out through the history user density in the grid structure to make it conform to the real environment conditions, and then the similar path constructed in the adjacent time is carried out. The trajectory offset and speed similarity are constrained to make it closer to the real users, so as to confuse the attackers and achieve the purpose of location privacy protection. Finally, the feasibility of anonymous success rate, execution time, and location privacy protection is verified by simulation experiments.