Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/235747

Title

Service differentiation without prioritization in IEEE 802.11 WLANs

Author(s)

Nguyen, Suong H.;  Vu, Hai L.;  Andrew, Lachlan L. H.

Abstract

Wireless LANs carry a mixture of traffic, with different delay and throughput requirements. The usual way to provide low-delay services is to give priority to such traffic. However this creates an incentive for throughput sensitive traffic also to use this service, which degrades overall network performance. We show, analytically and by simulation, that the performance of both delay and throughput sensitive traffic can be improved by scaling IEEE 802.11's CWmin and TXOP limit parameters in equal proportion. This reduces, but does not eliminate, the incentive for bulk data users to use the low-delay service. We further show that this incentive can be removed, while still giving improved performance to both classes, by reducing the CWmin of the high throughput class by a constant that is independent of the traffic load.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Information and Communication Technologies. Centre for Advanced Internet Architectures

Source

IEEE Transactions on Mobile Computing, (article in press)

Publication year

2013 (in press)

FOR Code(s)

0805 Distributed Computing;  0906 Electrical and Electronic Engineering;  1005 Communications Technologies

Keyword(s)

802.11 EDCA;  IEEE 802.11e Enhanced Distributed Channel Access;  Service differentiation;  Traffic loads;  Wireless networks

Publisher

IEEE

ISSN

1536-1233

Publisher URL

http://dx.doi.org/10.1109/TMC.2012.179

Copyright

Copyright © 2012 IEEE.

Research Projects

Mechanism design for next generation random access wireless protocols, Australian Research Council grant number DP1095103
Increasing internet energy and cost efficiency by improving higher-layer protocols, Australian Research Council grant number FT0991594

Peer reviewed