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
Full text
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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