Impact of Off-Sensing Attacks in Cognitive Radio Networks
Impact of Off-Sensing Attacks in Cognitive Radio Networks
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DOI：
10.1109/glocom.2017.8254025
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发表时间：
2017-12
期刊：
影响因子：
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通讯作者：
Moinul Hossain;Jiang Xie
中科院分区：
文献类型：
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作者：
Moinul Hossain;Jiang Xie
认知无线电（CR）是解决频谱稀缺问题的一种很有前途的解决方案。它使次级用户（SU）能够机会性地接入可用的授权频谱。然而，CR网络（CRN）具有安全漏洞，容易受到攻击。CRN中最常见的攻击之一是主用户仿真（PUE）攻击，在这种攻击下，犯罪者利用信道可用性。在这里，犯罪者模仿良性主用户（PU）的信号特征，并发送信号以防止SU接入频谱。研究人员已经提出了许多基于频谱的周期性感测的解决方案。然而，所有现有的解决方案都有一个强烈的假设，即犯罪者的传输与SU的感测间隔一致。在本文中，我们介绍了一个新的房间的脆弱性，在传统的传感方法，犯罪者攻击时，只有没有人感测的通道。此攻击将降低SU的信道利用率，并为受害SU造成拒绝服务（DoS）情况。我们将这种攻击称为感知攻击。我们还提出了一个分析模型来分析这种攻击在CRN中的影响。数值分析和仿真结果表明，该攻击对CRNs具有严重的威胁.
Cognitive Radio (CR) is a promising solution to solve the spectrum scarcity problem. It enables opportunistic access to the available licensed spectrum for secondary users (SUs). However, CR networks (CRNs) possess security vulnerabilities and are susceptible to attacks. One of the most common attacks in CRNs, under which perpetrators exploit channel availability, is Primary User Emulation (PUE) attack. Here, a perpetrator mimics the signal characteristics of a benign primary user (PU) and transmits the signal to prevent SUs to access the spectrum. Researchers have proposed many solutions based on periodic sensing of the spectrum. However, all of the existed solutions have a strong assumption that the perpetrator's transmission coincides with the sensing intervals of SUs. In this paper, we introduce a new room of vulnerability in the conventional sensing approaches, where a perpetrator attacks only when no one is sensing the channel. This attack will decrease the channel utilization by SUs and create a Denial of Service (DoS) situation for victim SUs. We name this attack as off-sensing attack. We also propose an analytical model to analyze the impact of this attack in CRNs. Numerical analysis and simulation results show that this attack possesses a serious threat to CRNs.