Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/217930

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Title

Performance analysis of IEEE 802.11 WLANs with saturated and unsaturated sources

Author(s)

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

Abstract

This paper proposes a comprehensive but tractable model of IEEE 802.11 carrying traffic from a mixture of saturated and unsaturated (Poisson) sources, with potentially different quality-of-service (QoS) parameters, i.e., TXOP limit, CWmin, and CWmax. The model is used to investigate the interaction between these two types of sources, which is particularly useful for systems seeking to achieve load-independent 'fair' service differentiation. We show that, when the TXOP limit for unsaturated sources is greater than one packet, batches are distributed as a geometric random variable clipped to TXOP limit. Furthermore, we present asymptotic results for access delay distribution, which indicates that it is infeasible to obtain real-time service in the presence of eight or more saturated sources, regardless of the real-time traffic load, given that all stations use a CWmin of 32.

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 Vehicular Technology, Vol. 61, no. 1 (Jan 2012), pp. 333-345

Publication year

2012

FOR Code(s)

08 Information and Computing Sciences;  09 Engineering;  10 Technology

Keyword(s)

EDCA;  Enhanced distributed channel access;  Heterogeneous traffic;  IEEE 802.11

Publisher

IEEE

ISSN

0018-9545

Publisher URL

http://dx.doi.org/10.1109/tvt.2011.2174069

Copyright

Copyright © 2011 IEEE. The accepted manuscript is reproduced in accordance with the copyright policy of the publisher. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

Full text

Peer reviewed