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An Enhancement to the IEEE 802.11e EDCA Providing QoS Guarantees

Author

Summary, in English

One of the challenges that must be overcome to realize the practical benefits of ad hoc networks is quality of service (QoS). However, the IEEE 802.11 standard, which undeniably is the most widespread wireless technology of choice for WLANs and ad hoc networks, does not address this issue. In order to support applications with QoS requirements, the upcoming IEEE 802.11e standard enhances the original IEEE 802.11 MAC protocol by introducing a new coordination function which has both contention-based and contention-free medium access methods. In this paper, we consider the contention-based medium access method, the EDCA, and propose an extension to it such that it can be used to provide QoS guarantees in WLANs operating in ad hoc mode. Our solution is fully distributed, uses admission control to regulate the usage of resources and gives stations with high-priority traffic streams an opportunity to reserve time for collision-free access to the medium.

Publishing year

2006

Language

English

Pages

195-212

Publication/Series

Telecommunication Systems

Volume

31

Issue

2-3

Document type

Journal article

Publisher

Springer

Topic

  • Engineering and Technology

Keywords

  • QoS-IEEE 802.11e-distributed MAC
  • admission control and scheduling

Status

Published

ISBN/ISSN/Other

  • ISSN: 1018-4864