Real time characteristics of Ethernet and its improvement

Zhi Wang1, Ye-qiong Song2, Ji-ming Chen1, You-xian Sun1
1National Laboratory of Industrial Control Technology, University of Zhejiang, Hangzhou, China
2Nancy – France

Tóm tắt

There is a growing interest in using Ethernet to support time constrained communication in process control, factory automation and other real-time applications. The paper first presents a comprehensive analysis of the temporal characteristics of traditional Ethernet and the improvements for them, then summarizes the interesting features offered by a switched Ethernet for supporting time constrained communication. Finally, the paper points that there is still lack of general means to handle the capability of switched Ethernet after investigating the QoS of switched Ethernet.

Từ khóa

#Ethernet networks #Asynchronous transfer mode #Time factors #Communication switching #Field buses #Distributed control #Bandwidth #IEC standards #Process control #Quality of service

Tài liệu tham khảo

miguel, 2000, Fieldbuses and Real-Time MAC Protocols, IFAC International Symposium on Intelligent Components and instruments for Control Applications 10.1109/12.477249 malcolm, 1995, Hard Realtime Communication in Multiple-Access Networks, Journal of Real Time Systems, 9, 75 10.1049/sej.1993.0034 song, 1996, Messages scheduling in FDDI for realtime communication, RTS&ES'96, 287 kweon, 2000, Ethernet-based Real-time Control Networks for Manufacturing Automation Systems, The International Symposium on Manufacturing with Applications WAC lindsay, 1999, DBP-M, A Technique for Meeting end-to-end (m, k)-firm Guarantee Requirements in Point-to-Point Networks, IEEE Local Computer Network Conference, 294 10.1109/12.57059 wang, 2002, Worst-Case Response Time of Aperiodic Message in WorldFIP Fieldbus, 15th IFAC World Congress wang, 2001, How to Improve Critical Realtime Traffic of Aperiodic Message in FF Fieldbus, IFAC conference on New Technology for Computer Control kopez, 1997, Real Time System Design Principles for Distributed Embedded Application 10.1109/IECON.1995.484195 10.1109/WFCS.1997.634301 holmeide, 2001, VoIP drives realtime Ethernet the industrial Ethernet book, 26 turiel, 1996, CSMA/PDCR: A Random Access Protocol Without Priority Inversion, IEEE Industrial Electronics Society Conf, 910 10.1109/12.919277 10.1109/71.605764 sahoo, 2000, Adaptive Connection Management for Mission Critical Applications over ATM Networks, International Journal of Parallel and Distributed Systems and Networks, 3, 51 10.1109/70.499818 10.1109/WFCS.1997.634300 10.1109/REAL.1994.342706