中文摘要：

针对认知无线电网络可用频谱动态变化的特点,提出一种特有的诱骗攻击问题,即在分布式认知无线电网络中,当认知节点采用按需路由协议建立路由链接时,恶意节点向路由请求数据包中加入虚假频谱信息,诱使其他节点建立路由链接,随后丢弃需其转发的数据包。为了解决这个问题,将认知无线电网络分成单跳有簇头结构,通过簇头检测恶意节点。为便于检验方案的可行性,结合簇头检测结果设计了一种路由协议。理论分析和仿真实验表明该安全问题会显著降低网络通信性能,本文提出的解决方案是有效和可行的。

英文摘要：

Because of the characteristics of the dynamic spectrum in cognitive radio, a special security problem of deception attack is proposed. In the distributed cognitive radio networks, cognitive nodes perform routing setup using on-demand routing protocol, malicious nodes can launch attack by adding false spectrum information to route request packet and making other nodes to rejeet data packet which need to be transmitted. In order to solve this security problem, cognitive radio networks are divided into single-hop elustering structure, and cluster-head is designed to detect malicious nodes. The paper designs a routing protocol by combining with cluster-head detect, which proved to be feasible and reliable for data transmission. Theoretical analysis and experimental simulation show that the secufitv issues can significantly reduce the network performance, and the proposed solution is with security and feasibility.