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首页> 外文期刊>IEEE transactions on mobile computing >Routing-Toward-Primary-User Attack and Belief Propagation-Based Defense in Cognitive Radio Networks
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Routing-Toward-Primary-User Attack and Belief Propagation-Based Defense in Cognitive Radio Networks

机译：认知无线电网络中的路由至主要用户攻击和基于信念传播的防御

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摘要

Cognitive radio (CR) networks have attracted many attentions recently, while the security issues are not fully studied yet. In this paper, we propose a new and powerful network layer attack, routing-toward-primary-user (RPU) attack in CR networks. In this attack, malicious nodes intentionally route a large amount of packets toward the primary users (PUs), aiming to cause interference to the PUs and to increase delay in the data transmission among the secondary users. In the RPU attack, it is difficult to detect the malicious nodes since the malicious nodes may claim that those nodes, to which they forward the packets, behave dishonestly and cause problems in the data transmission. To defend against this attack without introducing high complexity, we develop a defense strategy using belief propagation. First, an initial route is found from the source to the destination. Each node keeps a table recording the feedbacks from the other nodes on the route, exchanges feedback information and computes beliefs. Finally, the source node can detect the malicious nodes based on the final belief values. Simulation results show that the proposed defense strategy against the RPU attack is effective and efficient in terms of significant reduction in the delay and interference caused by the RPU attack.
机译：认知无线电（CR）网络最近引起了很多关注，而安全问题尚未得到充分研究。在本文中，我们提出了一种新型而强大的网络层攻击，即CR网络中的路由到主用户（RPU）攻击。在这种攻击中，恶意节点故意将大量数据包路由到主要用户（PU），目的是对PU造成干扰并增加次要用户之间的数据传输延迟。在RPU攻击中，很难检测到恶意节点，因为恶意节点可能声称将其转发数据包的那些节点行为不诚实，并导致数据传输出现问题。为了在不引入高复杂性的情况下防御这种攻击，我们开发了一种使用信念传播的防御策略。首先，找到从源到目的地的初始路线。每个节点都有一个表，记录来自路径上其他节点的反馈，交换反馈信息并计算信念。最后，源节点可以根据最终的置信度值检测到恶意节点。仿真结果表明，针对RPU攻击的防御策略在显着减少RPU攻击造成的时延和干扰方面是有效的。

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