Dynamic spectrum sharing through double auction mechanism in cognitive radio networks
Dynamic spectrum sharing through double auction mechanism in cognitive radio networks
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DOI：
10.1109/wcnc.2011.5779112
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发表时间：
2011-03
期刊：
影响因子：
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通讯作者：
Yinglei Teng;Yong Zhang;Chao Dai;Fan Yang;Mei Song
中科院分区：
文献类型：
--
作者：
Yinglei Teng;Yong Zhang;Chao Dai;Fan Yang;Mei Song
本文针对频谱共享和竞争问题，提出了一种基于双拍卖的频谱交易（DAST）方案，该方案巧妙地解决了主网（PN）和副网（SNs）之间的频谱接入问题。主要用户（pu）和次要用户（su）基于它们之间的供需关系设计了两种不同的实用函数。在模块的构建中，我们采用了期望和学习的方法，考虑了信道方差、传输预测、交易前历史等因素。通过四种投标策略的计算结果，验证了两种基于效用评估的决策模块在供不应求情况下的有效性。同时，DAST保持了与传统集中式认知无线电（CR）接入方法相当的频率效率。
In this paper, focusing on the spectrum sharing and competition, we propose a double auction based spectrum trading (DAST) scheme which resolves the spectrum access between the primary network (PN) and secondary networks (SNs) subtly. Two different utility functions for primary users (PUs) and secondary users (SUs) are designed basing on a supply-and-demand relationship between them. Also, we adopt expectation and learning process in the module formulation, which takes consideration of the variance of channels, transmission forecasting, afore trading histories and etc. Numerical results with four bidding strategies are presented to reinforce the effectiveness of the two proposed utility evaluation based decision modules in supply falling short of demand cases. Meanwhile, the proposed DAST maintains comparable frequency efficiency with traditional centralized cognitive radio (CR) access approaches.