Markov modelling of the IEEE 802.11 DCF for real-time applications with periodic traffic

Tian, Guosong & Tian, Yu-Chu (2010) Markov modelling of the IEEE 802.11 DCF for real-time applications with periodic traffic. In Proceedings of the 12th International Conference on High Performance Computing & Communication (IEEE HPCC-10), Melbourne.

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Popular wireless network standards, such as IEEE 802.11/15/16, are increasingly adopted in real-time control systems. However, they are not designed for real-time applications. Therefore, the performance of such wireless networks needs to be carefully evaluated before the systems are implemented and deployed. While efforts have been made to model general wireless networks with completely random traffic generation, there is a lack of theoretical investigations into the modelling of wireless networks with periodic real-time traffic. Considering the widely used IEEE 802.11 standard, with the focus on its distributed coordination function (DCF), for soft-real-time control applications, this paper develops an analytical Markov model to quantitatively evaluate the network quality-of-service (QoS) performance in periodic real-time traffic environments. Performance indices to be evaluated include throughput capacity, transmission delay and packet loss ratio, which are crucial for real-time QoS guarantee in real-time control applications. They are derived under the critical real-time traffic condition, which is formally defined in this paper to characterize the marginal satisfaction of real-time performance constraints.

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ID Code: 38412
Item Type: Conference Paper
Refereed: Yes
Keywords: IEEE 802.11, distributed coordination function (DCF), real-time control, modelling, performance evaluation
DOI: 10.1109/HPCC.2010.51
ISBN: 9780769542140
Subjects: Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > INFORMATION SYSTEMS (080600)
Divisions: Past > Schools > Computer Science
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2010 by The Institute of Electrical and Electronics Engineers, Inc.
Copyright Statement: 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.
Deposited On: 09 Nov 2010 23:42
Last Modified: 29 Feb 2012 14:24

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