Collaboration and fairness in opportunistic spectrum access
Collaboration and fairness in opportunistic spectrum access
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DOI：
10.1109/icc.2005.1494982
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发表时间：
2005-05
期刊：
影响因子：
--
通讯作者：
Haitao Zheng;Chunyi Peng
中科院分区：
文献类型：
--
作者：
Haitao Zheng;Chunyi Peng
频谱接入的开放频谱方式通过让用户有机会地感知和利用可用频谱，可以实现近乎最优的频谱利用。然而，单纯的频谱分配会导致明显的干扰。我们提出了一种网络控制频谱接入方案，用户协同行动以优化整个网络的频谱分配。我们建立了一个图理论模型来描述不同优化函数下的频谱访问问题，并设计了用户在避免干扰邻居的同时利用可用频谱的规则。实验结果证实，用户协作在机会频谱接入中产生了显著的好处（多达50%的改进）。
The open spectrum approach to spectrum access can achieve near-optimal spectrum utilization by letting users sense and utilize available spectrum opportunistically. However, naive spectrum assignment can lead to significant interference. We propose a network controlled spectrum access scheme where users behave collaboratively to optimize spectrum allocation for the entire network. We develop a graph-theoretical model to characterize the spectrum access problem under a number of different optimization functions, and devise rules for users to utilize available spectrum while avoiding interference with their neighbors. Experimental results confirm that user collaboration yields significant benefits (as much as 50% improvement) in opportunistic spectrum access.