Abstract: To protect the source location privacy in wireless sensor network and realize the balance of security and network energy consumption, this paper proposes a source location privacy preservation Routing Protocol Based on Multi-Path（RPBMP）. The protocol is based on multi-path selection and multiple relay nodes, can greatly increase the routing path between source node and base station, and extend the security time. Theoretical analysis and simulation results show that RPBMP can improve the location privacy protection performance of the source node without significantly increasing the energy consumption.

Key words: wireless sensor network, source node, location privacy preservation, multi-path, random routing

摘要： 为了对无线传感器网络中的源节点进行隐私保护，同时实现安全性和网络能耗的均衡，提出了一种基于多路径的源节点位置隐私保护路由协议（RPBMP），该协议基于多路径的选择和多个中继节点的跳转进行随机路由，大大增多了源节点至基站的路由路径，延长了安全时间。理论分析和仿真实验表明，RPBMP可以在不显著增加能耗的前提下，提高源节点的位置隐私保护性能。

关键词: 无线传感器网络, 源节点, 位置隐私保护, 多路径, 随机路由