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CATECAS: a content-aware transmission efficiency based channel allocation scheme for cognitive radio users with improved QoE
Telecommunication Systems ( IF 2.5 ) Pub Date : 2020-01-11 , DOI: 10.1007/s11235-019-00648-7
Sudipta Dey , Iti Saha Misra

Cognitive radio (CR) is a promising technology for the upcoming 5G communication which addresses opportunistic channel usage for enhanced spectrum utilization. However, Quality of Service (QoS) provisioning is a major challenge for CR Network due to the service interruption and packet error caused by random primary activities. In addition to this, periodic spectrum sensing for primary user protection reduces the effective throughput of the secondary users (SUs). However, to ensure QoS of SUs especially for video application, throughput enhancement is necessary which can be achieved by efficient spectrum sensing and channel allocation policy. As the QoS requirements are different for different secondary applications, we propose a novel content aware channel allocation scheme that enhances the Quality of Experience (QoE) of SUs. At first, the proposed scheme analyzes the QoS requirements of different SUs and prioritizes them. Consequently, the optimum sensing duration is determined to maximize the transmission efficiency and throughput of SUs. Finally, a novel content aware transmission efficiency-based channel assignment scheme (CATECAS) is proposed for SUs, considering the estimated channel quality and QoS requirements concurrently. Extensive performance analysis of CATESCAS on real-time video and file download applications confirms significant QoE improvement for SUs especially for rapid movement type of video application, which is considered as the most critical among different secondary applications.



中文翻译:

CATECAS:具有改善的QoE的基于认知内容传输效率的信道分配方案,用于认知无线电用户

认知无线电(CR)是用于即将到来的5G通信的有希望的技术,该技术解决了机会性信道使用问题,从而提高了频谱利用率。但是,由于随机主要活动导致服务中断和数据包错误,服务质量(QoS)设置是CR网络面临的主要挑战。除此之外,用于主要用户保护的定期频谱检测会降低辅助用户(SU)的有效吞吐量。但是,为了确保SU的QoS(特别是视频应用),必须提高吞吐量,这可以通过有效的频谱感测和信道分配策略来实现。由于不同二级应用的QoS要求不同,因此我们提出了一种新颖的内容感知信道分配方案,该方案可提高SU的体验质量(QoE)。首先,该方案分析了不同SU的QoS要求并对其进行了优先排序。因此,确定最佳感测持续时间以最大化SU的传输效率和吞吐量。最后,在兼顾估计的信道质量和QoS要求的情况下,提出了一种新颖的基于内容感知的基于传输效率的信道分配方案(CATECAS)。CATESCAS在实时视频和文件下载应用程序上的广泛性能分析证实了SU的QoE显着提高,特别是对于快速移动类型的视频应用程序,这在不同的辅助应用程序中被认为是最关键的。确定最佳感测持续时间以最大化SU的传输效率和吞吐量。最后,在兼顾估计的信道质量和QoS要求的情况下,提出了一种新颖的基于内容感知的基于传输效率的信道分配方案(CATECAS)。CATESCAS在实时视频和文件下载应用程序上的广泛性能分析证实了SU的QoE显着提高,特别是对于快速移动类型的视频应用程序,这在不同的辅助应用程序中被认为是最关键的。确定最佳感测持续时间以最大化SU的传输效率和吞吐量。最后,在兼顾估计的信道质量和QoS要求的情况下,提出了一种新颖的基于内容感知的基于传输效率的信道分配方案(CATECAS)。CATESCAS在实时视频和文件下载应用程序上的广泛性能分析证实了SU的QoE显着提高,特别是对于快速移动类型的视频应用程序,这在不同的辅助应用程序中最为关键。

更新日期:2020-01-11
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