Fair and efficient spectrum splitting for cooperative cognitive radio networks
Fair and efficient spectrum splitting for cooperative cognitive radio networks
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DOI：
10.1109/glocom.2012.6503898
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发表时间：
2012-12
期刊：
影响因子：
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通讯作者：
Guopeng Zhang;Kun Yang;Yan-Jun Hu;Xiaoji Li;Liang Hu
中科院分区：
文献类型：
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作者：
Guopeng Zhang;Kun Yang;Yan-Jun Hu;Xiaoji Li;Liang Hu
研究了认知无线电网络中主用户通过基于定价的动态频谱分配（DSA）将空闲频谱出租给次用户的情况。我们考虑到，SU可以作为一个合作中继的PU，然后，刺激PU分裂更多的频谱，同时保持最低传输速率的PU。在不使用定价机制的情况下，提出了一种基于资源交换的讨价还价博弈来发展激励机制。考虑到多个SU应该相互竞争从PU新获得的频谱，游戏方案的新颖性在于明确考虑到每个PU和SU都有自己的最小速率需求。仿真结果表明，该博弈保证了PU的最低速率要求，同时保证了每个SU都能根据自己对PU速率损失的补偿贡献程度从PU处获得公平的速率奖励。
This paper considers the network situation where the primary users (PUs) in a cognitive radio network have leased out the idled spectrum to the secondary users (SUs) via pricing-based dynamic spectrum allocations (DSAs). We take into account that a SU can serve as a cooperative relay for a PU, and, then, stimulate the PU to split more spectrum while maintaining the minimum transmission rate of the PU. Without using pricing-based mechanisms again, a resource-exchange based bargaining game is proposed to develop the incentive mechanism. Considering multiple SUs should compete with each other for the newly-obtained spectrum from a PU, the novelty of the game scheme is in taking explicitly account of that each PU and SU have their own minimum rate demands. Simulation results show the game guarantees the minimum rate requirement for the PU, and, at the same time, ensures each SU can get a fair rate-reward from the PU according to the level of contribution that it can make to compensate the PU's rate-loss.