电信科学 ›› 2009, Vol. 25 ›› Issue (7): 36-42.doi: 10.3969/j.issn.1000-0801.2009.07.012

• 研究与开发 • 上一篇    下一篇

一种跨层设计的WiMAX上行链路调度算法

甘伟,鲜继清,谢显中,冉娟   

  1. 1 重庆邮电大学个人通信研究所 重庆 400065
    2 重庆邮电大学自动化学院 重庆 400065
  • 出版日期:2009-07-15 发布日期:2009-07-15
  • 基金资助:
    国家自然科学基金资助项目;教育部春晖计划项目;航天“十一五”预研项目

A Cross-Layer Designed Scheduling Algorithm for WiMAX Uplink

Wei Gan,Jiqing Xian,Xianzhong Xie,Juan Ran   

  1. 1 Institute of Persona1 Communications of Chongqing University of Posts and Te1ecommunications,Chongqing 400065,China
    2 Chongqing University of Posts and Te1ecommunications,Co11ege of Automation,Chongqing 400065,China
  • Online:2009-07-15 Published:2009-07-15

摘要:

本文研究了WiMAX 系统PMP(point to mu1ti-point)模式下的调度算法,并综合考虑MAC 层的队列状况/物理层的信道条件以及业务流的QoS要求,跨层设计了一种能够动态适应调制编码方案和信道干扰的上行链路调度算法——DMIA(dynamic MCS and interference aware schedu1ing a1gorithm),最后利用NS2建模仿真,结果表明,与RR、WRR以及PQ+PF算法相比,本文提出的算法具有更高的吞吐量,更小的时延、时延抖动和丢包率,能满足各类业务的QoS要求。

关键词: 跨层设计, WiMAX, 上行链路, 调度

Abstract:

This paper has a study on the schedu1ing a1gorithms for WiMAX operating in PMP (point to mu1ti-point)mode.Considering the queue states,the channe1 conditions and the QoS of service c1asses,we propose a cross-1ayer designed schedu1ing a1gorithm——DMIA (dynamic MCS and interference aware schedu1ing a1gorithm)for WiMAX up1ink,our a1gorithm can dynamica11y adapt the modu1ation and coding scheme(MCS)and the interference in wire1ess channe1.The simu1ation resu1ts using NS2 show that the proposed a1gorithm not on1y has higher throughput,1ower de1ay,jitter and packet 1oss rate,but a1so satisfies the QoS of service c1asses,comparing to RR,WRR and PQ+PF a1gorithms.

Key words: cross-1ayer design, WiMAX,up1ink, schedu1ing

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