A Trust Mechanism-based Secure Cooperative Spectrum Sensing Scheme in Cognitive Radio Networks
Cooperative spectrum sensing in cognitive radio networks can significantly improve the sensing performance. But it is vulnerable to attack in which malicious nodes report false detection results. In this paper, we introduce a trust mechanism into cooperative spectrum sensing and propose a Trust Mechanism-based Secure Cooperative Spectrum Sensing scheme (TM-SCSS) in which fuse center allocates trust value to each node and updates the trust value according to the consistency detection of local sensing result and global decision. Cooperating nodes are categorized into malicious node, pending node and trusted node according to its trust value and different fusing schemes are adopted correspondingly to utilize local sensing information synthetically and improve the security of cooperative sensing. At the same time, a second opportunity to attend decision-making is provided for malicious nodes to improve impartiality of cooperation. Simulations show that compared with the existing methods, the proposed scheme has better attack-proof characteristic and can operate reliably for long time when there are about 12％ malicious nodes in the networks.
cognitive radio networks cooperative spectrum sensing security trust mechanism
Wu Guo-feng Zhu Shi-lei Hu Xiao-ning Hu Han-Ying
National Digital Switching System Engineering and Technology Research Center Zhengzhou, China
国际会议
成都
英文
1654-1659
2010-12-17（万方平台首次上网日期，不代表论文的发表时间）