QoS provisioning in IEEE 802.11 wireless LANs

Son N.H. Tran, Lee Wonjun

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

1 Citation (Scopus)

Abstract

The service differentiation provided in the IEEE 802.11e can only offer soft guarantees to the real-time traffic. Admission control is to provide better Quality of Service guarantees. We present the performance study of distributed admission control for IEEE 802.11e EDCF mechanism. Our observations show that using a distributed or centralized approach may not be the best solution and proper partitioning of the bandwidth is crucial in achieving better channel utilization and goodput. It has been shown that EDCF performs better at low load and has better delay characteristics, where as HCF has better jitter characteristics and works better in medium to high load conditions. We propose class-based admissibility ratio based on WFQ and priorities of the traffic classes. We also introduce the mechanism of provisional TXOP allocation using which the unused time of higher priority flows can be allocated to lower priority flows. We feel that an integrated approach adapting to the changes in the network and load of each of the access categories could perform better.

Original languageEnglish
Title of host publicationHUT-ICCE 2006 1st International Conference on Communications and Electronics, Proceedings
Pages23-28
Number of pages6
DOIs
Publication statusPublished - 2006
EventHUT-ICCE 2006 1st International Conference on Communications and Electronics - Hanoi, Viet Nam
Duration: 2006 Oct 102006 Oct 11

Publication series

NameHUT-ICCE 2006 First International Conference on Communications and Electronics, Proceedings
VolumePART 1

Other

OtherHUT-ICCE 2006 1st International Conference on Communications and Electronics
CountryViet Nam
CityHanoi
Period06/10/1006/10/11

Keywords

  • Access category (AC)
  • Distributed admission control (DAC)
  • Enhanced distributed coordination function (EDCF)
  • Hybrid coordination function (HCF)
  • Transmission opportunity (TXOP)

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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  • Cite this

    Tran, S. N. H., & Wonjun, L. (2006). QoS provisioning in IEEE 802.11 wireless LANs. In HUT-ICCE 2006 1st International Conference on Communications and Electronics, Proceedings (pp. 23-28). [4156505] (HUT-ICCE 2006 First International Conference on Communications and Electronics, Proceedings; Vol. PART 1). https://doi.org/10.1109/CCE.2006.350854