Journal of Xidian University ›› 2016, Vol. 43 ›› Issue (4): 86-91+159.doi: 10.3969/j.issn.1001-2400.2016.04.016

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Cooperative spectrum sensing method considering anti  camouflage SSDF malicious attacks

QI Xiaogang1;QIN Fengjuan1;LIU Lifang2   

  1. (1. School of Mathematics and Statistics, Xidian Univ., Xi'an  710071, China;
    2. School of Computer Science and Technology, Xidian Univ., Xi'an  710071, China)
  • Received:2015-05-07 Online:2016-08-20 Published:2016-10-12

Abstract:

We propose a segmented trust value update and defense scheme after considering a more practical cognitive radio network, where malicious users are able to camouflage themselves. First, we choose slow growth and fast recovery of the trust value update mechanism, determine which energy interval the reporting energy value of the node belongs to, and then reduce the malicious node trust value by dynamically updating the trust value and urge the poor performance node to improve its sensing efficiency. Simulation analysis using the Monte Carlo method is made to show the effectiveness of opposing malicious attacks, and guarantee the network performance and throughput.

Key words: cognitive radio, malicious nodes with camouflage capability, spectrum sensing