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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.
Original language | English |
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Journal | The Aeronautical Journal |
Volume | 123 |
Issue number | 1269 |
Pages (from-to) | 1788-1806 |
Number of pages | 19 |
ISSN | 0001-9240 |
DOIs | |
Publication status | Published - 1 Nov 2019 |
Keywords
- Embedded system
- Integrated Modular Avionics
- Mixed-criticality system
- Network on-chip
- On-Chip communication
- Real-time system
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- 1 Finished
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PREDICT: Time-predictable Distributed Control Systems
Schoeberl, M., la Cour-Harbo, A., Bak, T. & Sparsø, J.
Independent Research Fund Denmark | Technology and Production sciences
01/10/2016 → 31/12/2020
Project: Research