Ethernet Goes Real-Time: a Survey on Research and Technological Developments
Ref: HURRAY-TR-0001 Publication Date: 1, Jan, 2000
Ethernet Goes Real-Time: a Survey on Research and Technological Developments
Ref: HURRAY-TR-0001 Publication Date: 1, Jan, 2000Abstract:
Ethernet is the most popular LAN technology. Its low price and
robustness, resulting from its wide acceptance and deployment, has
created an eagerness to expand its responsibilities to the
factory-floor, where real-time requirements are to be fulfilled.
However, it is difficult to build a real-time control network using
Ethernet, because its MAC protocol, the 1-persistent CSMA/CD protocol
with the BEB collision resolution algorithm, has unpredictable delay
characteristics. Many anticipate that the recent technological advances
in Ethernet such as the emerging Fast/Gigabit Ethernet,
micro-segmentation and full-duplex operation using switches will also
enable it to support time-critical applications. This technical report
provides a comprehensive look at the unpredictability inherent to
Ethernet and at recent technological advances towards real-time
operation.
Mário Alves
Eduardo Tovar
Francisco VasquesDocument:
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DownloadRecord Date: 1, Jan, 2000