移动环境下基于掩护区域的最近邻居查询研究

A study on nearest neighbor query based on cloaked areas in mobile environment

针对移动环境下最近邻居空间查询的位置保护问题,提出基于掩护区域和移动方向的最近邻居空间查询(PSDNN)算法。PSDNN算法使用掩护区域替代掩护位置,结合移动用户的方向,从而在空间网络的最近邻居查询过程中有效保护移动用户的位置信息。实验结果表明,PSDNN算法的位置隐藏机制是可行的。

Privacy Protected Spatial Network Nearest Neighbor Query （PSDNN） algorithm was proposed for resol- ving the location protection problem on spatial networks query under mobile environment. The algorithm improves the method protecting user privacy by cover position and combined with the direction of the mobile users to protect Experimental results show that PSDNN algorithm is feasible and effective.