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IEEE 802.16中改进的QoS调度算法设计 被引量：2

Improved scheduling algorithm design for QoS in IEEE 802.16
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摘要 IEEE802.16标准在每个节点处都提供实时业务和非实时业务。由于基于优先级的业务的服务质量(QoS)的需求不同,因此需要对传统的调度算法进行改进使其具有更大的适应性。为了改善QoS端到端时延的性能,提出了一种混合调度算法(EDD和WFQ算法相结合)。仿真结果表明:在每个节点处,提出的混合算法比仅使用EDD算法能给实时业务产生的时延更少,并且还能够使单个BS在可允许的端到端时延范围内容纳数量更多的子SS,而且使用从BS到SS的GPSS模式的调度机制比使用GPC模式能产生更小的时延。 IEEE 802.16 standard supports real time and non-real time services at each node.However,it has flexibility to develop customized scheduling algorithms according to different priority-based traffic’s Quality of Service（QoS） requirements, so it is imperative to obtain optimum scheduling schemes for different kinds of traffic.In order to improve performance of end-to-end delay,a hybrid Scheduling algorithm（EDD along with WFQ） for QoS is proposed.The simulation results show that the proposed algorithm in a node gives less delay for real time services instead of EDD used only,also makes a BS accommodate more number of SSs with the given parameters,and scheduling schemes from Base Station（BS） to Subscriber Station（SS）like Grant Per SS（GPSS）impacts less delay than Grant Per Connection（GPC）.
作者 张波 张春业 马小强 杨士强
机构地区 山东大学信息科学与工程学院
出处 《计算机工程与应用》 CSCD 北大核心 2011年第19期97-100,共4页 Computer Engineering and Applications
关键词 IEEE802.16 给予单连接模式 给予单服务站模式 最先到达时间算法 加权公平队列算法 IEEE802.16 Grant Per Subscribe Station（GPSS） Grant Per Connection（GPC） Earliest Due Date（EDD） Weighted Fair Quoue（WFQ）
分类号 TP393 [自动化与计算机技术—计算机应用技术]
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参考文献7

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二级参考文献9

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共引文献1

同被引文献16

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计算机工程与应用
2011年 第19期

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