Abstract: Location-based services applications are increasingly entering people’s daily lives. Although a location-based service is quite convenient, privacy protection has received considerable attention in location-based services. Currently, there have been numerous studies on protecting location privacy and many methods have been proposed. However, most existing location anonymous method is for a snapshot query, without considering the location privacy leak in continuous LBS queries. This paper proposes a dummy-based anonymizing method based on user history location to protect location privacy in continuous LBS queries.

Key words: Location-Based Service（LBS）, continuous query, dummy user, location anonymity

摘要： 用户位置隐私保护已经成为基于位置服务领域研究的热点问题之一，现有的方法多是只针对用户单独一次查询的隐私保护，没有考虑移动过程中由于连续查询而造成的位置隐私泄露问题。主要针对连续查询下的移动对象位置隐私保护提出一种基于历史用户的虚假用户生成的位置匿名方法，该方法结合用户历史数据，通过确定合理的假用户生成区域及假用户生成时刻其空间位置，使虚假用户能够实时对真实用户位置进行保护，通过实验验证其可行性和有效性。

关键词: 基于位置的服务, 连续查询, 虚假用户, 位置匿名