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An Enhancement to the IEEE 802.11e EDCA Providing QoS Guarantees

In English

Författare

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.

Publiceringsår

2006

Språk

Engelska

Sidor

195-212

Publikation/Tidskrift/Serie

Telecommunication Systems

Volym

31

Issue

2-3

Dokumenttyp

Artikel i tidskrift

Förlag

Springer

Ämne

  • Engineering and Technology

Nyckelord

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

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1018-4864