2nd International ICST Conference on Quality of Service in Heterogeneous Wired/Wireless Networks

Research Article

Enhancing the IEEE 802.11e in QoS support: analysis and mechanisms

  • @INPROCEEDINGS{10.1109/QSHINE.2005.23,
        author={ Xiang  Chen and  Yuguang  Fang  and Hongqiang  Zhai },
        title={Enhancing the IEEE 802.11e in QoS support: analysis and mechanisms},
        proceedings={2nd International ICST Conference on Quality of Service in Heterogeneous Wired/Wireless Networks},
        publisher={IEEE},
        proceedings_a={QSHINE},
        year={2005},
        month={12},
        keywords={},
        doi={10.1109/QSHINE.2005.23}
    }
    
  • Xiang Chen
    Yuguang Fang
    Hongqiang Zhai
    Year: 2005
    Enhancing the IEEE 802.11e in QoS support: analysis and mechanisms
    QSHINE
    IEEE
    DOI: 10.1109/QSHINE.2005.23
Xiang Chen1, Yuguang Fang 1, Hongqiang Zhai 1
  • 1: Dept. of Electr. & Comput. Eng., Florida Univ., Gainesville, FL

Abstract

Despite its support of prioritized services, the IEEE 802.11e enhanced distributed channel access (EDCA) cannot guarantee strict QoS required by real-time services such as voice and video without proper network control mechanisms. To overcome this deficiency, we first build an analytical model to derive upper bounds for both delay means and variations for services of different priorities in the non-saturated 802.11e WLAN, showing that the QoS requirements of real-time services can be satisfied if the input traffic is properly regulated. Based on the analysis, we then propose a call admission control scheme and a rate control scheme to ensure that QoS requirements of real-time services are statistically guaranteed and that best effort services can efficiently use the residual bandwidth