Flexible TXOP assignments for efficient QoS scheduling in IEEE 802.11e WLANs

Jeng Ji Huang*, Che Yu Chang, Huei Wen Ferng

*此作品的通信作者

研究成果: 書貢獻/報告類型會議論文篇章

5 引文 斯高帕斯(Scopus)

摘要

A basic concept in 802.11e is Transmission Opportunities (TXOPs). The draft amendment of IEEE 802.11e includes a Simple Scheduler, in which a fixed length of TXOPs is assigned according to mean data rates. Since some traffic present bursts of variable size, several enhancements have been proposed previously; e.g., TXOPs are allocated according to the actual buffered data which is indicated through transmissions performed in the previous TXOP. Though the allocations are efficient in channel utilization, a delay could inevitably be incurred by packets, due to that new arrivals cannot be transmitted in the current TXOP, but have to wait until next. In this paper, an efficient scheduling scheme is proposed that aims at improving packet delay while maintaining high channel utilization. In the proposed scheme, maximal residual bandwidth is assigned to a station taking into account demands from all the other stations, and the unused portion is reclaimed. From extensive simulation results, it is shown that packet delay is effectively improved, compared to two previous enhancements of the Simple Scheduler, while achieving high throughput performance.

原文英語
主出版物標題5th IEEE and IFIP International Conference on Wireless and Optical Communications Networks, WOCN 2008
DOIs
出版狀態已發佈 - 2008
事件5th IEEE and IFIP International Conference on Wireless and Optical Communications Networks, WOCN 2008 - Surabaya, 印度尼西亚
持續時間: 2008 五月 52008 五月 7

出版系列

名字5th IEEE and IFIP International Conference on Wireless and Optical Communications Networks, WOCN 2008

其他

其他5th IEEE and IFIP International Conference on Wireless and Optical Communications Networks, WOCN 2008
國家/地區印度尼西亚
城市Surabaya
期間2008/05/052008/05/07

ASJC Scopus subject areas

  • 電腦網路與通信
  • 電氣與電子工程
  • 通訊

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