Performance Evaluation of IEEE 802.11 Wireless Networks for Real-time Networked Control Systems

Gui, Li, Tian, Yu-Chu, & Fidge, Colin J. (2007) Performance Evaluation of IEEE 802.11 Wireless Networks for Real-time Networked Control Systems. In The 2007 International Conference on Embedded Systems and Applications, 25 - 28 June, Monte Carlo Resort, Las Vegas, Nevada, USA..


In real-time networked control systems (NCSs), a controller interacts with sensors and actuators via a communications network. Wireless networks are being increasingly proposed as a basis for NCS implementation, but they introduce unpredictable transmission latencies and potential packet dropouts. This paper aims to evaluate the performance of wireless transmissions for real-time applications using the IEEE 802.11b protocol and to propose strategies for reduction of communication time delays. For sensors with the same data rate, our results show that careful choice of transmission intervals and avoiding putting all sensors in one physical layer can improve transmission performance. If sensors have different data rates our investigation shows that putting the slowest sensors farthest from the controller will minimize the transmission delays and jitter, especially when there is a large number of sensors.

Impact and interest:

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

437 since deposited on 22 Nov 2007
266 in the past twelve months

Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 10865
Item Type: Conference Paper
Refereed: No
Additional URLs:
ISBN: 1601320191
Subjects: Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > COMMUNICATIONS TECHNOLOGIES (100500) > Computer Communications Networks (100503)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2007 IEEE
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: 22 Nov 2007 00:00
Last Modified: 29 Feb 2012 13:33

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page