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TII
2008

Fine-Tuning MAC-Level Protocols for Optimized Real-Time QoS

8 years 12 months ago
Fine-Tuning MAC-Level Protocols for Optimized Real-Time QoS
In distributed real-time systems, meeting the real-time constraints is mandatory but the satisfaction of other application-dependent criteria is most generally required as well. In particular, Networked Control Systems (NCS) are known to be sensitive to communication delays such as frame response time jitters. Well known Medium Access Control (MAC) algorithms such Non-Preemptive Deadline Monotonic (NP-DM) or Non-Preemptive Earliest Deadline First (NP-EDF) are efficient in terms of bandwidth usage but they may perform poorly regarding other application dependent performance criteria. This paper highlights a class of on-line scheduling policies targeted at scheduling frames at the MAC level, and provides a schedulability analysis that is valid for all policies within the considered class. As it will be shown, these algorithms are implementable on COTS components (e.g., Controller Area Network controllers) and offer good trade-offs between feasibility and the satisfaction of other applic...
Mathieu Grenier, Nicolas Navet
Added 15 Dec 2010
Updated 15 Dec 2010
Type Journal
Year 2008
Where TII
Authors Mathieu Grenier, Nicolas Navet
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