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

• Ressearch and development • Previous Articles     Next Articles

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

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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