An optimized scheduling scheme to provide quality of service in 802.11e wireless LAN

Hongli Luo, Mei Ling Shyu

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

18 Scopus citations

Abstract

802.11 WLAN technology has been widely used recently to transmit heterogeneous data. The transmission of multimedia data has its quality of service (QoS) requirements. Hybrid Coordination Function (HCF) is proposed to provide service differentiation to support real-time transmission by 802.11e working group. HCF is composed of connection-based Enhanced Distributed Coordination Access (EDCA) and contention-free control-based HCF Controlled Channel Access (HCCA). The simple scheduler in HCCA proposed by 802.11e working group generates constant bit rate service, which is not efficient for the multimedia data with variable bit rates. An efficient scheduling scheme for the 802.11e wireless LAN is proposed in this paper. The allocation of the transmission opportunity to each wireless station is based on the optimization performance index and uses the queue length of the wireless station as feedback information. Simulation results demonstrate that the proposed scheduling can achieve a better QoS for different traffic class under heavy traffic load.

Original languageEnglish (US)
Title of host publicationISM 2009 - 11th IEEE International Symposium on Multimedia
Pages651-656
Number of pages6
DOIs
StatePublished - Dec 1 2009
Event11th IEEE International Symposium on Multimedia, ISM 2009 - San Diego, CA, United States
Duration: Dec 14 2009Dec 16 2009

Publication series

NameISM 2009 - 11th IEEE International Symposium on Multimedia

Other

Other11th IEEE International Symposium on Multimedia, ISM 2009
CountryUnited States
CitySan Diego, CA
Period12/14/0912/16/09

Keywords

  • 802.11e
  • MAC
  • Multimedia
  • Quality of service
  • Scheduling
  • Wireless LAN

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Hardware and Architecture
  • Software

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  • Cite this

    Luo, H., & Shyu, M. L. (2009). An optimized scheduling scheme to provide quality of service in 802.11e wireless LAN. In ISM 2009 - 11th IEEE International Symposium on Multimedia (pp. 651-656). [5365777] (ISM 2009 - 11th IEEE International Symposium on Multimedia). https://doi.org/10.1109/ISM.2009.109