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NEXT TTA - High Confidence Architecture for Distributed Control Applications

EU Kutatási Keretprogram project
2002 - 2003

Local supervisor: Péceli Gábor
Official project supervisor: Bécsi Műszaki Egyetem, Ausztria

The objective of the NEXT TTA project is to further improve the dependability and functionality of the time-triggered architecture (TTA). In particular the NEXT TTA project aims to:

  • Enhance the dependability of the TTA by developing a new physical interconnection structure with intelligent star couplers;
  • Integrate event-triggered and time-triggered communication within a single communication network while maintaining composability;
  • Integrate the synchronous programming environment LUSTRE into the TTA;
  • Develop highly automated WCET (worst case execution time) estimation algorithms;
  • Explore the limits of a COTS implementation of the TTA in the gigabit range.
Expected results
The NEXT TTA project will produce:
  • A prototype star coupler containing algorithms to tolerate arbitrary node failures and to detect degradation of node parameters before causing a fault;
  • Formal analysis of critical star coupler algorithms;
  • A methodology for integration of event-triggered and time-triggered communication, demonstrated by a prototype and supported by software tools;
  • A prototype implementation of the integration of LUSTRE into the TTA and tools for WCET analysis.


  • Bécsi Műszaki Egyetem, Ausztria
  • Austriamicrosystems AG, Ausztria
  • Audi AG, Németország
  • Chalmers University of Technology, Svédország
  • TTTech Computertechnik AG, Ausztria
  • University Joseph Fourier (Verimag), Franciaország
  • Centre National de la Recherche Scientifique (CNRS-Verimag), Franciaország
  • Institut National Polytechnique de Grenoble (INPG-Verimag), Franciaország
  • University of Ulm, Németország
  • University of York, Egyesült Királyság

Further information about the project:
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