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首页> 外文期刊>South African Computer Journal >The Design and the implementation of a robust scheme to combat the effect of malicious nodes in Cognitive Radio Ad Hoc networks
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The Design and the implementation of a robust scheme to combat the effect of malicious nodes in Cognitive Radio Ad Hoc networks

机译：一种强大的方案的设计与实现，以打击恶意节点在认知无线电临时网络中的恶意节点效果

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摘要

Cognitive radio network, which enables dynamic spectrum access, addresses the scarcity of radio spectrum caused by ever-increasing demand for spectrum. Cognitive radio technology ensures the efficient utilisation of underutilised licenced spectrum by secondary users (SU). Secondary users, sense the radio environment before utilising the available spectrum to avoiding signal interference. The SU cooperatively sense the spectrum to ensure global view of the network. unfortunately, cooperative sensing is vulnerable to Byzantine attacks whereby SU falsify the spectrum reports for selfish reasons. Hence, this study proposes the implementation of a scheme to combat the effects of Byzantine attack in cognitive radio network. The proposed scheme, known as the extreme studentized cooperative consensus spectrum sensing (ESCCSS), was implemented in an ad hoc cognitive radio networks environment where the use of a data fusion centre (DFC) is not required. Cognitive radio nodes perform their own data fusion making spectrum access decisions. They fuse their own reports with reports from neighbouring nodes. To evaluate the performance of our scheme and its effectiveness in combating the effect of byzantine attack, comparative results are presented. The comparative results show that the ESCCSS outperformed the Attack-Proof Cooperative Spectrum Sensing scheme.
机译：认知无线电网络，它能够动态频谱访问，解决了通过不断增加对光谱需求引起的无线电频谱的稀缺。认知无线电技术确保二级用户（SU）的有利于未合并的许可频谱的利用。辅助用户，在利用可用频谱以避免信号干扰之前感测无线电环境。 SU合作感知频谱以确保网络的全局视图。不幸的是，合作传感易受拜占庭攻击的影响，苏为自私的原因伪造了频谱报告。因此，本研究提出了实施一个方案来打击拜占庭攻击在认知无线电网络中的影响。被称为极端学生化的合作协商频谱感应（ESCCS）的拟议方案在不需要使用数据融合中心（DFC）的临时认知无线电网络环境中实施。认知无线电节点执行自己的数据融合进行频谱访问决策。它们融合了他们自己的报告，并使用邻近节点的报告。为了评估我们的方案的表现及其在打击拜占庭攻击效果方面的效果，提出了比较结果。比较结果表明，ESCCSS优于攻击合作频谱传感方案。

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