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Management of services differentiation and guarantee in IEEE 802.11e wireless LANs

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

  • J He
  • D Kaleshi
  • ATD Munro
  • MH Barton
  • Z Tang
  • Z Yang
Original languageEnglish
Title of host publicationIEEE 61st Vehicular Technology Conference, Spring 2005
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
Pages2023 - 2027
Number of pages5
ISBN (Print)0780388879
StatePublished - May 2005
Event61st Vehicular Technology Conference 2005 (VTC 2005-Spring) - Stockholm, Sweden

Publication series

ISSN (Print)15502252


Conference61st Vehicular Technology Conference 2005 (VTC 2005-Spring)
Period1/05/05 → …


In this paper, we study the management and control of service differentiation and guarantee based on enhanced distributed function coordination (EDCF) in IEEE 802.11e wireless LANs. Backoff-based priority schemes are the major mechanism for quality of service (QoS) provisioning in EDCF. However, control and management of the backoff-based priority scheme are still challenging problems. We have analysed the impacts of backoff and inter-frame space (IFS) parameters of EDCF on saturation throughput and service differentiation. A centralised QoS management and control scheme is proposed. The configuration of backoff parameters and admission control are studied in the management scheme. The special role of access point (AP) and the impact of traffic load are also considered in the scheme. The backoff parameters are adaptively re-configured to increase the levels of bandwidth guarantee and fairness on sharing bandwidth. The proposed management scheme is evaluated by OPNET. Simulation results show the effectiveness of the analytical model based admission control scheme.

Additional information

Name and Venue of Event: Stockholm, Sweden Conference Organiser: IEEE Rose publication type: Conference contribution Terms of use: Copyright © 2005 IEEE. Reprinted from IEEE 61st Vehicular Technology Conference, 2005 (VTC 2005-Spring 2005). This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

Research areas

  • Quality of Service, 802.11 Wireless LAN, CSMA/CA, admission control


61st Vehicular Technology Conference 2005 (VTC 2005-Spring)

Duration1 May 2005 → …

Event: Conference

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