Journal on Communications ›› 2014, Vol. 35 ›› Issue (3): 58-58.doi: 10.3969/j.issn.1000-436x.2014.03.007

• Academic paper • Previous Articles     Next Articles

Spectrum sharing schemes in cognitive radio networks based on collusion formation

Xue-song TAN,Chao LIN,Wei GUO   

  1. National Key Laboratory of Science and Technology on Communication,University of Electronic Science and Technology of China,Chengdu 611731,China
  • Online:2014-03-25 Published:2017-08-17
  • Supported by:
    The National Natural Science Foundation of China;The National Natural Science Foundation of China;The National Basic Research Program of China (973 Program);The Fund for Central University of China

Abstract:

When multiple primary network (PN) with different interests competes to offer spectrum access opportunities for a single secondary network,a spectrum sharing scheme based on a repeated game model could be adopted to form a colluded monopoly for the licensed spectrum so as to maximize their total transmission utility.However,when a does not value its future transmission utility enough,it might choose to deviate from the present colluded monopoly to obtain a transmission utility larger than its monopoly utility,which then reduces the current and future transmission utilities of all other PN.Two new strategies were thereby proposed to produce a more flexible and credible spectrum sharing monopoly among all PN.Numerical simulation shows that,compared with the existing triggering strategy,the proposed strategies can effectively increase the overall transmission utility of all PN.

Key words: spectrum sharing, cognitive radio network, repeated competition, Nash equilibrium, collusion

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