A reliable real-time transport protocol for control systems over wireless networks

Shi, Xiaohan, Tian, Guosong, & Tian, Yu-Chu (2012) A reliable real-time transport protocol for control systems over wireless networks. In 2012 IEEE Australasian Telecommunication Networks and Applications Conference (ATNAC'2012), 7-9 November 2012, Traders Hotel , Brisbane, QLD.

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Abstract

Deploying networked control systems (NCSs) over wireless networks is becoming more and more popular. However, the widely-used transport layer protocols, Transmission Control Protocol (TCP) and User Datagram Protocol (UDP), are not designed for real-time applications. Therefore, they may not be suitable for many NCS application scenarios because of their limitations on reliability and/or delay performance, which real-control systems concern. Considering a typical type of NCSs with periodic and sporadic real-time traffic, this paper proposes a highly reliable transport layer protocol featuring a packet loss-sensitive retransmission mechanism and a prioritized transmission mechanism. The packet loss-sensitive retransmission mechanism is designed to improve the reliability of all traffic flows. And the prioritized transmission mechanism offers differentiated services for periodic and sporadic flows. Simulation results show that the proposed protocol has better reliability than UDP and improved delay performance than TCP over wireless networks, particularly when channel errors and congestions occur.

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ID Code: 57289
Item Type: Conference Paper
Refereed: Yes
Keywords: Real-time control, transport protocol, reliability, delay
DOI: 10.1109/ATNAC.2012.6398082
Subjects: Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > DISTRIBUTED COMPUTING (080500) > Networking and Communications (080503)
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 IEEE
Copyright Statement: This work has been submitted to the IEEE for possible publication. Copyright may be transferred without notice, after which this version may no longer be accessible
Deposited On: 14 Feb 2013 23:31
Last Modified: 20 Feb 2013 09:36

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