A QoS provision multipolling mechanism for IEEE802.11e standard

Fang Yie Leu, Ching Chien Kuan, Der-Jiunn Deng

研究成果: Conference contribution

1 引文 斯高帕斯(Scopus)

摘要

With flexibility and mobility, Wireless Local Area Network (WLAN) has rapidly become one of the most emergent computer research fields. It attracts significant interests both in academic and industry communities. For applying a higher Quality of Service (Qos) to network applications, the 802.11e Task Group has deployed hybrid coordination function (HCF) to improve the original IEEE 802.11 Medium Access Control (MAC) protocol. Nevertheless, how to choose the right MAC parameters and QoS mechanism so as to achieve a predictable performance still remains unsolved. In this paper, we propose a polling access control scheme which in its PCF mode applies non-preemptive priority in order to transfer voice packets more efficiently. The voice traffic characterized by packet rate of voice source and the maximum tolerable jitter (packet delay variation) is forecasted. We record the scheduling results in a queue, with which AP (Access Point) can poll and then enable mobile users to communicate with their opposite sites. This occurrence also solves the problem that some voice packets do not suit QoS in IEEE 802.11e standard with multipolling. During the time-gap while transmitting no voice packets, the scheme changes to DCF mode to transfer data packets. Furthermore we simulate and analyze the performance of the scheme in a WLAN environment. The experimental results show that our approach can dramatically improve the quality of network service.

原文English
主出版物標題2005 International Conference on Wireless Networks, Communications and Mobile Computing
頁面392-397
頁數6
DOIs
出版狀態Published - 2005 十二月 1
事件2005 International Conference on Wireless Networks, Communications and Mobile Computing - Maui, HI, United States
持續時間: 2005 六月 132005 六月 16

出版系列

名字2005 International Conference on Wireless Networks, Communications and Mobile Computing
1

Other

Other2005 International Conference on Wireless Networks, Communications and Mobile Computing
國家United States
城市Maui, HI
期間05-06-1305-06-16

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • 引用此

    Leu, F. Y., Kuan, C. C., & Deng, D-J. (2005). A QoS provision multipolling mechanism for IEEE802.11e standard. 於 2005 International Conference on Wireless Networks, Communications and Mobile Computing (頁 392-397). [1549441] (2005 International Conference on Wireless Networks, Communications and Mobile Computing; 卷 1). https://doi.org/10.1109/WIRLES.2005.1549441