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首页> 外文会议>2018 Second International Conference on Electronics, Communication and Aerospace Technology >Handover Triggering Based Spectrum Handover Approach in Cognitive Radio Network: A Survey
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Handover Triggering Based Spectrum Handover Approach in Cognitive Radio Network: A Survey

机译：认知无线电网络中基于切换触发的频谱切换方法

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摘要

Rapid developments in wireless communication technology has increased huge demand for spectrum bands. This has raised the problem of spectrum scarcity, to meet such demands we require dynamic allocation of the spectrum which can be provided by cognitive radio networks (CRNs). Cognitive radio network is an evolving network which empowers secondary users (SU) to opportunistically utilize the spectrum band allotted to a primary user (PU) and it also has capability to solve spectrum inefficiency and spectrum scarcity issues. Spectrum handover approaches can reduce the handover delay, avoid unwanted interference, reduce collision and utilize the channel optimally to enhance the overall performance of SU communication. Hence, these approaches play an important role in enhancing the system performance of cognitive radio networks (CRNs). In this survey paper, various approaches of spectrum handover in the CR network has been discussed. Furthermore, the comparison of spectrum handover approaches has been carried out on various parameters. Moreover, some applications of the reactive and proactive handover in the CR network and research challenges related to spectrum handover has also been discussed in this paper. The parameter for analyzing the performances of spectrum handover approaches are listed which determine the efficiency of these approaches. Finally, through graphical representation, handover delay and complexity of various handover approaches is compared.
机译：无线通信技术的飞速发展增加了对频带的巨大需求。这就提出了频谱稀缺的问题，为了满足这样的要求，我们需要动态分配频谱，这可以由认知无线电网络（CRN）提供。认知无线电网络是一个不断发展的网络，它使次要用户（SU）能够机会性地利用分配给主要用户（PU）的频谱，并且还具有解决频谱效率低下和频谱稀缺问题的能力。频谱切换方法可以减少切换延迟，避免不必要的干扰，减少冲突并优化利用信道来增强SU通信的整体性能。因此，这些方法在增强认知无线电网络（CRN）的系统性能中起着重要作用。在这份调查论文中，讨论了CR网络中频谱切换的各种方法。此外，已经在各种参数上进行了频谱切换方法的比较。此外，本文还讨论了反应式和主动式切换在CR网络中的一些应用以及与频谱切换相关的研究挑战。列出了用于分析频谱切换方法性能的参数，这些参数确定了这些方法的效率。最后，通过图形表示，比较了各种切换方法的切换延迟和复杂度。

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