中文摘要：

为减少现有LBS（基于位置的服务）机制给用户位置信息和个人隐私泄露带来的威胁，提出并实现了一个基于移动智能终端的连续查询用户运动轨迹保护方案。该方法利用移动终端来规划虚拟路径，以减少用户在连续查询中的隐私泄露，且不需要第三方服务器提供位置匿名服务，由用户自主决定何时启动位置隐匿机制。实验证明，提出的方法有效地隐匿了连续查询用户的位置及轨迹信息。

英文摘要：

To reduce the threat of user location information and personal privacy disclosure that brought by existing LBS mechanism, this paper put forward a mobile phone based location anonymization scheme for continuous query LBS users. The method used to program virtual paths with mobile device to reduce the user＇s privacy leakage in a continuous query, and did not need a third party server provide anonymization service. According to the presented scheme, users decided independently whether or when to start location protection. Results show that the presented method achieves efficient anonymization of both location and trajectory for LBS users.