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基于IEEE 802.16e协议的公平调度算法 被引量：1

Fair scheduling algorithm in IEEE 802.16e system
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摘要 无线城域网标准IEEE 802.16e规定了系统的服务质量(QoS)框架,并把所有服务划分为五种类型,但没有规定具体的QoS调度算法。提出了在不同的业务类型间进行资源调度的算法,并把所有的业务流划分为领先、同步、滞后三种状态,根据业务流的类型以及其所处的状态,采取两级额外带宽再分配策略和补偿机制。仿真结果显示使用该算法提高了系统的资源利用率,同时公平性也得到很好的保障。 IEEE 802. 16e, standard of wireless metropolitan area networks, defines the structure of Quality of Service （QoS）, and divides all services into five scheduling types. But it does not define detail-scheduling algorithm of QoS. An algorithm was proposed here to schedule resources in different service types, and divide all service flows into three states： leading, synehronal and lagging. It also used two-phase extra-bandwidth allocation policy and compensation strategy according to the service flows＇ type and state. Simulation results indicate that the resource utilization efficiency is improved, and the fairness is guaranteed well.
作者 张红霞 戴居丰
机构地区 天津大学电子信息工程学院
出处 《计算机应用》 CSCD 北大核心 2009年第5期1204-1207,共4页 journal of Computer Applications
关键词 IEEE 802.16e 服务质量 调度算法 补偿 公平性 IEEE 802.16e Quality of Service （QoS） scheduling algorithm compensation fairness
分类号 TN929.5 [电子电信—通信与信息系统]
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参考文献12

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计算机应用
2009年 第5期

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