基于定向贪心游走的WMSN位置隐私

摘要

Wireless sensor networks are used to monitor sensitive object, the location privacy of the monitored object becomes an important issue. Flooding-based phantom has defects of long message latencies and too high energy costs. In this paper, directed greedy walk is proposed to make adversary difficult to hop to hopping place to backtrace the origin of sensor communication. Compared with Flooding-based phantom, the directed greedy walk has smaller message latencies and lower energy costs. In particular, it has bigger safety period when the intermediate node has multi-parent-nodes.%无线传感器网络用于监控敏感对象,被监控对象的位置隐私成为一个重要问题.基于洪泛的幻影具有消息发送时间长且能量消耗过大的缺陷.为了使敌手难以跳到跳地反向追踪到信源位置,提出了定向贪心游走.与基干洪泛的幻影相比,定向贪心游走具有较小的消息发送时间和较低的能量消耗.特别在中介节点具有多个父节点的情形下,定向贪心游走具有较大的安全期.