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Towards a Deterministic Mixed Criticality High Availability Seamless Redundancy (HSR) Ring

  • Peter Heise
  • Fabien Geyer
  • Alexandros Elefsiniotis
  • Roman Obermaisser
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9066)

Abstract

There is a growing trend for real-time Ethernet in nearly all industrial branches. While each industry has its own Ethernet-based protocols in networks, the High Availability Seamless Redundancy (HSR) network is currently of interest to the automation industry. A key factor and main benefit of HSR is its built-in fault-tolerance against the failure of a single communication link. However, it lacks mechanisms to guarantee certain bandwidth to applications. In this paper we propose a mechanism to guarantee packet arrival within a certain time while still offering best-effort traffic in order to support for mixed criticality traffic. Furthermore, a mathematical model is developed, that describes the upper latency limit of the proposed mechanism. We compare HSR with and without the proposed extension using an OMNeT++ simulation and show its advantages and weaknesses.

Keywords

Short Path Time Synchronization Link Failure Maximum Latency Ring Network 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Peter Heise
    • 1
    • 2
  • Fabien Geyer
    • 1
  • Alexandros Elefsiniotis
    • 1
  • Roman Obermaisser
    • 2
  1. 1.Airbus Group InnovationsMunichGermany
  2. 2.University of SiegenSiegenGermany

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