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.
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|Item Type:||Conference Paper|
|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|
|Last Modified:||29 Feb 2012 13:33|
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