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2005 : Real-Time Ethernet

Author(s)
Stephan Ramberger
Abstract
The Ethernet network technology is due to the highly available and inexpensive components ideally suited for interconnecting embedded systems, but by the use of its Carrier Sense Multiple Access with Collision Detection mechanism to solve the concurrent access to the shared communication medium Ethernet, in terms of its access procedure, is, for example, not suitable to guarantee a bounded end-to-end delay that is one of many prerequisites for real-time communication. To solve this problem, extensive research has been conducted since the early years of Ethernet and is still being in progress.
The current paper describes the requirements, possibilities and available implementations for real-time communication on the widely used Ethernet network technology. It is intended as a reference for the development of an 8-bit microcontroller based embedded system with a real-time Ethernet protocol.
The results of this work show that real-time Ethernet is possible even with tight resource constraints. Three different protocols might be suitable for an implementation on the specified hardware as they have already been put into practice. Two of them are token based whereas the third is a master/slave approach.
Bibtex
@mastersthesis{ ramberger:2005,
  author =      "Stephan Ramberger",
  title =       "Real-Time Ethernet",
  address =     "Treitlstr. 3/3/182-1, 1040 Vienna, Austria",
  school =      "Technische Universit{\"a}t Wien, Institut f{\"u}r Technische Informatik",
  type =        "Bachelor's Thesis",
  year =        "2005"
}
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