【作者】 李智；

【导师】 刘安丰；

【作者基本信息】 中南大学 ， 计算机科学与技术， 2012， 硕士

【摘要】 无线传感器网络是大量的或移动的传感器以自组织和多跳的方式构成的无线网络,近年来随着传感器技术、低能耗电子、射频技术的飞速发展,集监测、处理、传输和控制于一体又无基础设施限制、功能多样的无线传感器网络已逐步融入到各业界的方方面面,但由于其自身特点或促进或制约着其应用进程,如何保护汇聚节点的位置隐私是无线传感器网络领域中非常重要的研究课题之一。本文首先介绍了无线传感器网络的基本结构、特点,同时对无线传感器网络面临的主要安全威胁进行了分析。对无线传感器网络中汇聚节点位置隐私保护问题的研究现状进行了总结,讨论了汇聚节点隐私保护问题的特点,列举和分析了几种主要的汇聚节点位置隐私安全策略,指出这些策略在安全和能量有效性上的优劣,明确了汇聚节点位置隐私保护问题的研究方向。针对目前汇聚节点位置隐私保护协议强度不高以及能量利用率相对不高的现状,本文提出了RBR策略,即构建多个环形路由与环形路由间路由,网络中传感器节点以最短路由方式向环形路由上的节点发送数据,节点收到的数据都会路由到所有其它环形路由节点,具有较好的隐私保护能力。本策略的环形路由动态变化,避免了固定路由策略容易受到穷尽攻击的缺陷,具有比以往研究更高的汇聚节点位置隐私保护能力；RBR策略充分利用网络中的剩余能量,使网络中可能成为匿名汇聚节点的数量尽可能多,有效提高了能量的利用率。分析和仿真实验结果表明：该方案不仅能够提供很好的汇聚节点位置隐私安全,而且能有效地提高网络的能量利用率。更多还原

【Abstract】 Wireless sensor networks(WSNs) are composed of a multitude of locomotive sensor nodes through self-framework and multi-hop wireless links to interact with each other. The network has been amalgamating to the cause of military, environment, medical care and other commercial areas with the advancement of sensor technology, low-power electronics, and low-power radio frequency design recent years. Yet in light of affect of the WSN’s features on the applying process, how to protect location privacy of these sensitive objects becomes an exceedingly crucial research field.The paper first introduces the basic architecture and features of Wireless Sensor Networks, meantime analyzes the major security threat the WSN is confronted with. Summarizing the Sink—Location privacy issue, the paper gives an introduction of location privacy protection, which involves, such as, massive of strategies about the guard, pointing out their characteristics in safety performance and energy control as well as ascertaining the direction of Sink—Location privacy shield.Some of the existing wireless sensor network routing protocols about the Sink location privacy only concern security cost, not taking energy issues into account, and the security routing protocols cost too much. In order to solve the problem, we thus propose a Ring Based Routing scheme to preserve sink-location privacy with strong privacy preserving ability, Which include ring route and routing between ring routing, and ring routing constantly changing. Meanwhile,we fully use extra energy in non-hotspot regions to create more anonymity sink which does not only improves the network privacy status but also optimizes network energy resource utilization, gains in importance. We provide extensive theoretical analysis to confirm the strong privacy preserving integrity of our scheme-that of the solid resilience to a variety of serious privacy threats as well as well as prolonged network lifetime.更多还原