Cognitive radio ad hoc networks (CRAHNs) have recently been proposed as a way to bring cognitive radio technology to traditional ad hoc networks. An important problem is to design a medium access control (MAC) protocol that addresses the decentralized control and local observation for spectrum management. In this paper, we propose a cognitive MAC protocol with mobility support (CM-MAC) based on Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) technique, where CM-MAC protocol can respond to the CRs vicinity state to primary exclusive regions. Furthermore, this paper analyzes the throughput performance for the proposed MAC protocol with the consideration of multiple primary user activities and CR node mobility. Our analytical results show that the proposed MAC protocol has desired upper bound of spectrum utilization as well as outperforms the throughput performance of CSMA/CA MAC and statistical channel allocation (SAC) MAC protocols given a certain condition.
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机译:最近已经提出了认知无线电Ad Hoc网络(Crahns)作为将认知无线电技术带到传统的临时网络的一种方式。一个重要问题是设计一个媒体访问控制(MAC)协议,该协议解决了频谱管理的分散控制和本地观察。在本文中,我们提出了一种基于载波侦听多址/碰撞避免(CSMA / CA)技术的移动性支持(CM-MAC)的认知MAC协议,其中CM-MAC协议可以响应CRS附近状态到主要独占区域。此外,本文通过考虑多个主要用户活动和CR节点移动性,分析了所提出的MAC协议的吞吐量性能。我们的分析结果表明,所提出的MAC协议具有频谱利用率的上限,并且优于CSMA / CA MAC和统计信道分配(SAC)MAC协议的吞吐量性能。
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