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

Hongli Luo; Mei Ling Shyu

doi:10.1109/ISM.2009.109

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

Hongli Luo, Mei Ling Shyu

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English (US)
Title of host publication	ISM 2009 - 11th IEEE International Symposium on Multimedia
Pages	651-656
Number of pages	6
DOIs	https://doi.org/10.1109/ISM.2009.109
State	Published - Dec 1 2009
Event	11th IEEE International Symposium on Multimedia, ISM 2009 - San Diego, CA, United States Duration: Dec 14 2009 → Dec 16 2009

Publication series

Name	ISM 2009 - 11th IEEE International Symposium on Multimedia

Other

Other	11th IEEE International Symposium on Multimedia, ISM 2009
Country	United States
City	San Diego, CA
Period	12/14/09 → 12/16/09

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

Access to Document

10.1109/ISM.2009.109

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Luo, H & Shyu, ML 2009, An optimized scheduling scheme to provide quality of service in 802.11e wireless LAN. in ISM 2009 - 11th IEEE International Symposium on Multimedia., 5365777, ISM 2009 - 11th IEEE International Symposium on Multimedia, pp. 651-656, 11th IEEE International Symposium on Multimedia, ISM 2009, San Diego, CA, United States, 12/14/09. https://doi.org/10.1109/ISM.2009.109

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