摘要: Casper模型只适用于用户移动速度较慢的情况,当用户高速运动时,匿名区域构造成功率下降,LBS服务质量降低。为此,提出一种基于V-grid模型的位置隐私保护方法。引入用户移动速度,在构造匿名区域前更新用户位置,以满足不同移动速度用户的隐私需求。实验结果表明,V-grid模型适用于户运动速度不同的情况,比Casper模型的匿名区域构造成功率更高,服务质量更好。
关键词:
位置隐私,
Casper模型,
V-grid模型,
k-匿名
Abstract: The problem is that Casper model can only adapt to the situation in which users are moving slowly. When users are in high-speed movement, Casper model can not construct good anonymous area and cause poor service quality. In order to solve this problem, this paper proposes a location privacy protection method based on V-grid model. It introduces V-grid model which takes in the parameter of users speed, updates users’ locations before constructing anonymous areas and meets kinds of users’ privacy need. Experimental results show that V-grid model has better applicability and achieves higher service quality than Casper model.
Key words:
location privacy,
Casper model,
V-grid model,
k-anonymity
中图分类号:
司超, 徐红云. 基于V-grid模型的位置隐私保护方法[J]. 计算机工程, 2012, 38(12): 276-278.
CI Chao, XU Gong-Yun. Location Privacy Protection Method Based on V-grid Model[J]. Computer Engineering, 2012, 38(12): 276-278.