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17/2003 : Structuring of TTA Systems and Initial Synchronization

RR Number
17/2003
Author(s)
Wilfried Steiner, Michael Paulitsch, Alexander Hanzlik
Abstract
Clustering as method to structure big systems gives numerous advantages including complexity and bandwidth reduction as well as the openness for future extensions to a system. This paper discusses the traditional approach to cluster systems in the Time-Triggered Architecture (TTA) and introduces a new approach that uses the central guardians as gateways. Since the Time-Triggered Protocol (for SAE class C applications) (TTP/C), the core communications protocol of the TTA, is based on time-division multiple-access (TDMA), a startup algorithm has to be used to establish normal system operation according the access schemes. Therefor, this paper also presents startup algorithms for multi-cluster systems that extend the native single-cluster startup algorithm of TTP/C. We will discuss that the algorithms will work in presence of faulty gateways as well. The two approaches for clustering can be seen as primitives from which arbitrary multi-cluster systems can be built, still the multi-cluster startup will work properly.
First original posting: January 2003
Bibtex
@techreport{ steiner:2003-17,
  author =       "Wilfried Steiner and Michael Paulitsch and Alexander Hanzlik",
  title =        "Structuring of TTA Systems and Initial Synchronization",
  institution =  "Technische Universit{\"a}t Wien, Institut f{\"u}r Technische Informatik",
  address =      "Treitlstr. 1-3/182-1, 1040 Vienna, Austria",
  type =         "Research Report",
  month =        "January",
  year =         "2003",
  number =       "17/2003"
}
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