关键词: 无线传感器网络, 源位置, 隐私保护, 路由协议, 路径改变

Abstract: In order to ensure the source node’s location privacy in Wireless Sensor Networks（WSNs）, and to achieve a balance between security performance and network energy consumption, the source-location privacy protection routing protocol in the WSNs by avoiding attackers is proposed. The routing protocol, which assumes that the node has the ability to detect attackers, lets the nodes on the routing path to adopt a route change policy by sending warning messages so that attackers cannot trace back to the source node, thus the safety period for source node to maintain location privacy extends. Theoretical analysis and simulation experiments show that the protocol guarantees a high degree of privacy of the source node’s location with less communication overhead.

Key words: Wireless Sensor Networks（WSNs）, source location, privacy preservation, routing protocol, path change