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Fairness-based scheduling algorithm for time division duplex mode IEEE 802.16 broadband wireless access systems

机译:时分双工模式IEEE 802.16宽带无线接入系统的基于公平性的调度算法

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摘要

IEEE 802.16 broadband wireless access standard specifies four types of services to satisfy the quality of service (QoS) requirements of multimedia applications. How to design a scheduling algorithm is an open issue. Manufacturers can implement their own efficient scheduling algorithm depending on their requirement. There are a lot of scheduling algorithms that have been proposed. No matter these scheduling algorithms propose a hierarchical structure with strict priority or one-level scheduling mechanism, which is based conceptually on the round-robin approach, they do not consider an important factor: fair. The authors introduce a fair strategy algorithm for IEEE 802.16 broadband wireless access standard. The proposed algorithm applies a fair strategy to utilise the system bandwidth, achieve the QoS requirements of high-priority service flows and reduce starvations of low-priority service flows. The simulation studies show that the proposed scheduling algorithm provides a flexible way to utilise the system bandwidth.
机译:IEEE 802.16宽带无线访问标准指定了四种服务类型,以满足多媒体应用程序的服务质量(QoS)要求。如何设计调度算法是一个悬而未决的问题。制造商可以根据自己的需求实施自己的高效调度算法。已经提出了许多调度算法。无论这些调度算法提出了具有严格优先级的分层结构还是一级调度机制(从概念上讲都是基于循环方法),它们都不会考虑一个重要因素:公平。作者介绍了一种适用于IEEE 802.16宽带无线访问标准的公平策略算法。所提出的算法运用公平的策略来利用系统带宽,达到高优先级业务流的QoS要求,并减少低优先级业务流的饥饿。仿真研究表明,该调度算法为系统带宽的利用提供了一种灵活的方法。

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  • 来源
    《Communications, IET》 |2010年第9期|共8页
  • 作者单位

    Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan;

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  • 正文语种 eng
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