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Novel Channel-Hopping Schemes for Cognitive Radio Networks

机译:认知无线电网络的新型信道跳变方案

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Recently, cognitive radio (CR) has become a key technology for addressing spectrum scarcity. In CR networks, spectrum access should not interfere the colocate incumbent networks. Due to the requirement above, common control channel approaches, which are widely used in traditional multichannel environments, may face serious CR long-time blocking problem and control channel saturation problem. Although channel-hopping-based approaches can avoid these two problems, existing works still have significant drawbacks including long time-to-rendezvous, unbalance channel loading, and low channel utilization. In this paper, we introduce three channel-hopping approaches, RCCH, ARCH, and SARCH for synchronous and asynchronous environments, respectively. Compared with previous works, our schemes outperform the state of the art in terms of these metrics.
机译:最近,认知无线电(CR)已成为解决频谱短缺的关键技术。在CR网络中,频谱访问不应干扰同一位置的现有网络。由于上述要求,在传统的多信道环境中广泛使用的通用控制信道方法可能会遇到严重的CR长时间阻塞问题和控制信道饱和问题。尽管基于信道跳变的方法可以避免这两个问题,但是现有的工作仍然存在重大缺陷,包括交会时间长,信道负载不平衡以及信道利用率低。在本文中,我们分别介绍了针对同步和异步环境的三种信道跳跃方法,RCCH,ARCH和SARCH。与以前的作品相比,我们的方案在这些指标方面优于最新技术。

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