基于动态调整节点包发送速率的基站保护策略

无线传感器网络中，为了抵御全局流量监测的攻击者，提出了一种基于节点包发送速率动态调整的基站位置隐私保护策略SRA。SRA通过调整全网节点的发包率，实现源节点到基站的流量隐藏，继而能够有效抵御全局流量分析的攻击者。理论表明，SRA能够有抵御全局流量的攻击者对基站的定位。更进一步地，提出了基于贪心选择路径的基站位置隐私保护策略GCR，进一步降低网络通信开销。实验表明，与SRA相比，GCR能够有效保护基站的位置隐私且具有较低的通信开销。

Base Station Protection Schemes based on Packet Sending Rate Adjustment

In order to defend against the global traffic monitoring attack in wireless sensor networks, the paper firstly proposes a base station protection scheme based on packet sending rate adjustment. By controlling the packet sending rate of each node dynamically, SRA conceals the traffic from source nodes to the base station successfully, hence hides the location of the BS. Theory analysis shows that SRA can protect the base station＇s location under the global traffic monitoring attack. Considering the number of source nodes, the paper further proposes another base station protection scheme based on greedy route selection （GCR）. Experiment results show that when compared with SRA, GCR can protect the location of base station while incurring low communication cost.