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Enhanced cooperative behavior and fair spectrum allocation for intelligent IoT devices in cognitive radio networks
Physical Communication ( IF 2.2 ) Pub Date : 2020-08-22 , DOI: 10.1016/j.phycom.2020.101190
Ahmed H. Khalifa , Mohamed K. Shehata , Safa M. Gasser , Mohamed S. El-Mahallawy

The extensive utilization of Internet of Things (IoT) devices in a wide range of services prompts spectrum scarcity. Recently, Cognitive Radio Networks (CRNs) have shown promising results in addressing the spectrum scarcity problem. Therefore, CRNs are envisaged to play a crucial role in accommodating the massive number of emerging IoT devices. However, two dominant shortcomings hinder the coalescence of IoT and CRNs. First, the selfish behavior among Secondary Users (SUs) during the spectrum sensing process. Second, the inability to construct a convenient metric for fair spectrum assignment. The contribution of this paper is quadruple: (i) a Direct Strategy Selection (DSS) mechanism that satisfies Aspiration Equilibrium (AE) and enforces cooperation among SUs during the spectrum sensing process; (ii) a spectrum allocation scheme that takes cooperative behavior as a fairness parameter; (iii) studying the effects of three windowing techniques on the proposed allocation scheme and selecting the window that achieves maximum fairness; (iv) exploring the trade-off between the utility function and cooperation among SUs. The results show that DSS yields instant convergence and a threefold increase in the index of cooperation. Regarding spectrum allocation, the proposed scheme combined with the Reverse Attenuation Window (RAW) shows a 22% increase in the Average Satisfaction Ratio (ASR) for SUs. The simulations are conducted in the worst case scenario, where all SUs in the CRN are requesting to access the spectrum at the same time.



中文翻译:

认知无线电网络中智能物联网设备的增强协作行为和公平频谱分配

物联网(IoT)设备在各种服务中的广泛使用导致频谱稀缺。最近,认知无线电网络(CRN)在解决频谱短缺问题方面显示出令人鼓舞的结果。因此,可以预见,CRN在容纳大量新兴物联网设备中将发挥关键作用。但是,两个主要缺点阻碍了物联网和CRN的融合。首先,在频谱感知过程中,次要用户(SU)之间的自私行为。第二,无法为公平频谱分配建立方便的度量标准。本文的贡献是四倍的:(i)一种直接策略选择(DSS)机制,该机制可满足愿望平衡(AE)并在频谱传感过程中加强SU之间的合作;(ii)以合作行为作为公平性参数的频谱分配方案;(iii)研究三种开窗技术对提议的分配方案的影响,并选择实现最大公平的窗口;(iv)探索效用函数与SU之间的合作之间的权衡。结果表明,DSS可以立即收敛,合作指数可以提高三倍。关于频谱分配,所提出的方案与反向衰减窗口(RAW)相结合,显示SU的平均满意度(ASR)提高了22%。模拟是在最坏的情况下进行的,其中CRN中的所有SU都要求同时访问频谱。(iii)研究三种开窗技术对提议的分配方案的影响,并选择实现最大公平的窗口;(iv)探索效用函数与SU之间的合作之间的权衡。结果表明,DSS可以立即收敛,合作指数可以提高三倍。关于频谱分配,所提出的方案与反向衰减窗口(RAW)相结合,显示SU的平均满意度(ASR)提高了22%。模拟是在最坏的情况下进行的,其中CRN中的所有SU都要求同时访问频谱。(iii)研究三种开窗技术对提议的分配方案的影响,并选择实现最大公平的窗口;(iv)探索效用函数与SU之间的合作之间的权衡。结果表明,DSS可以立即收敛,合作指数可以提高三倍。关于频谱分配,所提出的方案与反向衰减窗口(RAW)相结合,显示SU的平均满意度(ASR)提高了22%。模拟是在最坏的情况下进行的,其中CRN中的所有SU都要求同时访问频谱。结果表明,DSS可以立即收敛,合作指数可以提高三倍。关于频谱分配,所提出的方案与反向衰减窗口(RAW)相结合,显示SU的平均满意度(ASR)提高了22%。模拟是在最坏的情况下进行的,其中CRN中的所有SU都要求同时访问频谱。结果表明,DSS可以立即收敛,合作指数可以提高三倍。关于频谱分配,所提出的方案与反向衰减窗口(RAW)相结合,显示SU的平均满意度(ASR)提高了22%。模拟是在最坏的情况下进行的,其中CRN中的所有SU都要求同时访问频谱。

更新日期:2020-08-22
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