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认知无线网络中的合谋攻击将严重危害频谱的安全感知和资源的可靠分配.文章首先对恶意次用户的合谋行为做出分析,然后将Vickrey-Clarke-Groves(VCG)机制与信誉机制有效融合,提出了新的分布式安全频谱感知策略VCG-RSS.VCGRSS利用VCG机制激励次用户提供真实的推荐信誉值,然后通过信誉机制来计算协作用户的可信度,最终实现安全的协作感知.仿真结果表明VCG-RSS能够有效地抵御合谋攻击和实现安全协作,提高频谱感知的准确性.
Collusion attacks in cognitive wireless networks will seriously jeopardize the security perception of the spectrum and the reliable allocation of resources.This article first analyzes the collusion behavior of malicious secondary users and then effectively integrates Vickrey-Clarke-Groves (VCG) mechanism and reputation mechanism , Proposes a new distributed security spectrum sensing strategy VCG-RSS.VCGRSS uses VCG mechanism to encourage sub-users to provide real recommendation reputation values, and then calculates the credibility of collaborative users through reputation mechanism to finally achieve secure collaborative perception. The results show that VCG-RSS can effectively resist collusion attacks and achieve security coordination, and improve the accuracy of spectrum sensing.