认知网络中基于信誉的协作频谱租赁技术研究

Reputation-based Study of Cooperation Spectrum Leasing Technology in Cognitive Wireless Network

针对认知网络中一些认知用户存在概率性欺骗的行为,提出了一种基于信誉的Stackelberg博弈产权频谱租赁方案.这种基于信誉的机制使授权用户能够在每个时隙监控认知用户的协作行为,并限制有欺骗行为的用户接入频谱.仿真结果表明,相比传统的Stackelberg博弈,该方案增加了可选择可靠用户占搜索空间的比例,同时大大地提高了主用户的收益.

Considering that some cognitive users present probabilistic dishonest behavior in cognitive radio networks（CRN）, a Stackelberg game property-right spectrum leasing model based on reputation is proposed. This reputation-based mechanism enables the PU to monitor cooperation behaviors of the SUs in each time slot, and restrict the SUs that present dishonest behavior to access the shared spectrum. The simulation re- suits show that the proposed algorithm outperforms the classical Stackelberg game from both primary and reli- able secondary users＇ perspective.