QoS differentiation in IEEE 802.11 wireless local area networks for real-time control

Tian, Guosong & Tian, Yu-Chu (2013) QoS differentiation in IEEE 802.11 wireless local area networks for real-time control. In Bertogna, Marko (Ed.) Work-in-Progress Proceedings, RTAS13 19th Real-Time and Embedded Technology and Applications Symposium, RTAS WiP Committee, Philadephia, PA, pp. 33-36.

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IEEE 802.11 based wireless local area networks (WLANs) are being increasingly deployed for soft real-time control applications. However, they do not provide quality-ofservice (QoS) differentiation to meet the requirements of periodic real-time traffic flows, a unique feature of real-time control systems. This problem becomes evident particularly when the network is under congested conditions. Addressing this problem, a media access control (MAC) scheme, QoS-dif, is proposed in this paper to enable QoS differentiation in IEEE 802.11 networks for different types of periodic real-time traffic flows. It extends the IEEE 802.11e Enhanced Distributed Channel Access (EDCA) by introducing a QoS differentiation method to deal with different types of periodic traffic that have different QoS requirements for real-time control applications. The effectiveness of the proposed QoS-dif scheme is demonstrated through comparisons with the IEEE 802.11e EDCA mechanism.

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ID Code: 59045
Item Type: Conference Paper
Refereed: Yes
Keywords: Wireless local area networks, IEEE 802.11, QoS differentiation, Real-time control
ISBN: 9781300887393
Subjects: Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > DISTRIBUTED COMPUTING (080500) > Networking and Communications (080503)
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2013 The Authors
Deposited On: 10 Apr 2013 23:14
Last Modified: 26 Jan 2014 21:17

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