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。
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.
出处
《计算机工程》
CAS
CSCD
2012年第12期276-278,282,共4页
Computer Engineering
