Gaussian approximation based admission control for variable bit rate traffic in IEEE 802.11e WLANs

Yu Wen Huang*, Tsern-Huei Lee, Jing Rong Hsieh

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

For QoS requirements of real-time traffic, IEEE 802.11 working group introduces a QoS-aware channel access mechanism, called Hybrid Coordination Function (HCF), which consists of contention-based Enhanced Distributed Channel Access (EDCA) and contention-free HCF Controlled Channel Access (HCCA). The TXOP allocation and the admission control units of the HCCA reference scheduler are only appropriate for constant bit rate (CBR) flows. It may result in serious packet loss for variable bit rate (VBR) flows. In this paper, we propose a simple admission control algorithm which adopts Gaussian distribution to approximate VBR traffic. Numerical results obtained from computer simulations show that our proposed algorithm can effectively and efficiently allocate Transmission Opportunity (TXOP) durations to QoS-enhanced stations (QSTAs) to guarantee a predefined packet loss probability. Moreover, our proposed scheme can easily handle multiple VBR flows of the same QSTA to get the advantage of multiplexing gain.

Original languageEnglish
Title of host publication2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
Pages3771-3776
Number of pages6
DOIs
StatePublished - 27 Nov 2007
Event2007 IEEE Wireless Communications and Networking Conference, WCNC 2007 - Kowloon, China
Duration: 11 Mar 200715 Mar 2007

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
ISSN (Print)1525-3511

Conference

Conference2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
CountryChina
CityKowloon
Period11/03/0715/03/07

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    Huang, Y. W., Lee, T-H., & Hsieh, J. R. (2007). Gaussian approximation based admission control for variable bit rate traffic in IEEE 802.11e WLANs. In 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007 (pp. 3771-3776). [4204866] (IEEE Wireless Communications and Networking Conference, WCNC). https://doi.org/10.1109/WCNC.2007.690