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Abstract

Lazar Todorov, Till Steinbach, Franz Korf, Thomas C. Schmidt,
Evaluating Requirements of High Precision Time Synchronisation Protocols using Simulation,
In: SIMUTools 2013 – 6th International OMNeT++ Workshop, p. 307–313, ACM DL : New York, USA, March 5-8 2013.
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Abstract: The simulation of high precision time synchronisation protocols can help to find problems. It allows to track errors at the earliest time – during the design and configuration – of a synchronised distributed real-time system. High precision time synchronisation protocols are of vital importance for the safety in cyber-physical systems such as trains, planes, cars or industrial installations. Especially for time-triggered systems, with a coordinated time division multiple access media allocation strategy, the achievable precision of time synchronisation among sending participants determines the quality of communication and the amount of bandwidth that is usable. In this work we show a new concept for the simulation of distributed real-time synchronisation protocols that uses discrete event-based simulation. Our model for the OMNeT++ Framework is adaptable and thus allows to provide highly accurate results or fast simulations. We show based on the simulation of the AS6802 standard for time-synchronisation typical real-world use cases for the introduced concept. Our results show that the simulation can help to reduce the effort of determining configuration parameters for clock synchronisation protocols. We further show how the simulation of synchronised networks can benefit from our evolutionary approach.

Themes: Real-time Ethernet

 


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