连续查询下基于缓存队列的区域匿名策略

摘要

Location-based service applications lead to the leakage of personal privacy.To address this problem,a region cloaking policy with buffer queue (RCBQ)was proposed for continuous query scenarios.The thorough investigation and understanding of the maximum moving speed attack was carried out.On this basis,the privacy-preserving impact of round region cloaking was analyzed according to the privacy metric of region ratio.The design of privacy detection algorithm with buffer queue was pro-posed to improve message forwarding ratio while satisfying users’privacy preservation requirements.The simulation results show that the RCBQ achieves significant performance improvement in terms of message forwarding ratio as well as processing cost.%针对位置服务的广泛应用带来个人隐私泄露的问题,提出连续查询场景下基于缓存队列的区域匿名策略(RCBQ)。分析并理解最大移动速度攻击问题；依据区域面积比隐私度量标准,对圆形区域匿名的隐私保护效果进行分析；设计带缓存的隐私检测算法,在满足保护需求的基础上提高请求转发率。仿真结果表明,RCBQ可以提高请求转发率,降低处理时间成本。