无线传感器网络中基于角度的定向随机步幻影路由协议

Angle-based directed random walk phantem routing protocol for WSNs

为了更好地保护源位置隐私,提出了一种新的源位置隐私保护方法,通过使用相邻节点的斜率的反正切值来确定幻影路径上下一跳节点选择范围,使得幻影源的选取在不暴露源位置方向信息的情况下能够远离真实源,且能够生成更多不重复的幻影源,更灵活地控制幻影源的选取,使幻影源的分布较为均匀,从而能够更好地提高源位置隐私保护的性能。仿真实验表明:相比传统的基于跳数的定向随机步方法和完全随机步方法,该方法在能耗与安全周期上有着相对明显的优势,因而该方法能够更好地保护源位置隐私。

To protect source location privacy,a novel angle-based directed random walk（ ABDRW） routing protocol is proposed,which use the arctangent value of the slope of the adjacent nodes to determine the scope of the next phantom nodes on phantom path,this approach can generate more different phantom sources that are far away from the real source,and thus enhances the source location privacy protection. Comparing with several existing typical methods,such as hop-based directed random walk（ HBDRW） and the completely random walk phantom routing（ CRWPR）,ABDRW protocol can reach higher source location privacy protection performance on safety period and energy consumption,through flexible selection and more uniform distribution of phantom source,so it can protect the source location privacy better.