一种基于IEEE802.11支持QoS自适应调度器模型和算法

An Adaptive Scheduler Model Supporting QoS over the IEEE 802.11 System

这篇文章提出了能够有效支持 QoS 的 IEEE 802.11 自适应调度器模型。和以往的支持 QoS 的调度器模型相比,这里根据在主控接入点(MAP:Master Access Point)和用户终端(UT:User Termination)的各自延时需求对满足不同的传输机制的分组流进行自适应调度。这种机制不仅完全兼容当前支持 QoS 的 IEEE 802.11MAC 协议标准,而且能够有效减少由于实时传输带来的分组延时,增加满足不同信道负载和带宽要求的数据流的吞吐率。实时测试得到的数据基本验证了这个要求。

an adaptive scheduler model of QoS guarantee over MAC enhancement protocol of IEEE802.11. Compare with previous scheduler model supporting QoS is proposed in this paper. This proposed scheme can be used to schedule and retransfer the packets from the different priority classers according to different delay requirements among the Master Access Points (MAP) and User Terminals (UT). This scheme not only supports current MAC protocol of IEEE 802.11, but also effectively reduces packets delay and packets drop because of the real-time traffic, meanwhile, enhances throughput of real-time traffic satisfied with different channel load.