摘要：

为了加强无线传感器网络(WSN)中的基站(BS)位置隐私保护强度, 同时解决现有位置隐私保护方案存在的网络能量消耗不平衡问题, 提出一种基于环结构的BS位置隐私保护路由协议(RBRP)。RBRP通过建立多环结构的网络拓扑模型并设计基于环结构的数据路由, 以解决能量不平衡的问题, 延长网络寿命。同时, 该协议在网络中注入假基站(FBS), 在网络中远离BS的位置产生流量通信, 从而干扰攻击者通过流量分析来确定BS位置。实验结果表明, 与现有方案相比, RBRP不仅能够提高WSN中BS的位置隐私性, 在源节点与BS处于同环或相邻环时其传输时延也能占据优势, 还可以有效平衡能量消耗, 延长网络生命周期。

关键词: 无线传感器网络, 位置隐私, 假基站, 环结构, 隐私保护

Abstract:

Existing Base Station (BS) location privacy protection schemes in Wireless Sensor Networks (WSN) are hindered by poor privacy and imbalanced network energy consumption. To address these problems, this paper proposes a Ring-based Base-station location privacy protection Routing Protocol (RBRP) to protect BS location privacy effectively. RBRP solves the energy imbalance problem by establishing a network topology model with a multi-ring structure and designing data routing based on the ring structure to extend the network lifecycle. The proposed protocol injects a Fake Base Station (FBS) into the network and generates traffic at locations far from the BS, which prevents attackers from determining the BS location through traffic analysis. Simulation experiments show that compared with existing schemes, RBRP further improves the location privacy of BS in WSN and provides an advantage in terms of transmission delay when the source node and BS are in the same or adjacent ring. It can also effectively balance energy consumption and extend the network lifecycle.

Key words: Wireless Sensor Networks (WSN), location privacy, Fake Base Station (FBS), ring structure, privacy protection