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A real-time on-chip network architecture for mixed criticality aerospace systems

Part of: The AJ Air Traffic Management Collection

Published online by Cambridge University Press:  13 August 2019

S. Majumder Open the ORCID record for S. Majumder [Opens in a new window] ,
J.F.D. Nielsen ,
A. La Cour-Harbo ,
H. Schiøler  and
T. Bak
S. Majumder*
Affiliation:
Department of Electronic Systems, Aalborg University Aalborg, Denmark
J.F.D. Nielsen*
Affiliation:
Department of Electronic Systems, Aalborg University Aalborg, Denmark
A. La Cour-Harbo*
Affiliation:
Department of Electronic Systems, Aalborg University Aalborg, Denmark
H. Schiøler*
Affiliation:
Department of Electronic Systems, Aalborg University Aalborg, Denmark
T. Bak*
Affiliation:
Department of Electronic Systems, Aalborg University Aalborg, Denmark
*
sm@es.aau.dk
jdn@es.aau.dk
alc@es.aau.dk
henrik@es.aau.dk
tba@es.aau.dk
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Abstract

Integrated Modular Avionics enables applications of different criticality levels to share the same hardware platform with an established temporal and spatial isolation. On-chip communication systems for such platforms must support different bandwidth and latency requirements of applications while preserving time predictability. In this paper, our concern is a time-predictable on-chip network architecture for targeting applications in mixed-criticality aerospace systems. The proposed architecture introduces a mixed, priority-based and time-division-multiplexed arbitration scheme to accommodate different bandwidth and latency in the same network while preserving worst-case time predictability for end-to-end communication without packet loss. Furthermore, as isolation of erroneous transmission by a faulty application is a key aspect of contingency management, the communication system should support isolation mechanisms to prevent interference. For this reason, a sampling port and isolated sampling buffer-based approach is proposed with a transmission authorisation control mechanism, guaranteeing spatial and temporal isolation between communicating systems.

Keywords

Mixed-criticality systemNetwork on-chipReal-time systemEmbedded systemOn-Chip communicationIntegrated Modular Avionics
Type
Research Article
Information
The Aeronautical Journal , Volume 123 , Issue 1269 , November 2019 , pp. 1788 - 1806
Copyright
© Royal Aeronautical Society 2019 

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Footnotes

*

This research is funded by Independent Research Foundation Denmark under grant number 6111-00363B.

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