—Today, communication in real-time systems is
based on time-triggered or event-triggered protocols, or
combinations thereof. Each of these solutions has its benefits
and tradeoffs regarding timeliness and bandwidth usage. In this
work, we present a new method called mode-based slot
scheduling with fast mode-signaling, which can substantially
improve bandwidth usage in many scenarios of industrial
relevance, while preserving timeliness. With mode-based slot
scheduling, a well-controlled amount of dynamic contention for
network time slots is possible. Fast mode-signaling is used to
reach consensus on the current transmission mode with the
highest preference extremely fast and reliably among all
network nodes. We present the implementation of our method
with TTCAN – a time-triggered protocol in the automotive
domain –, and evaluation results.
—Mode-based slot scheduling, fast mode-signaling,
TDMA, slot assignment, TTCAN.
T. Braun and R. Gotzhein are with the Department of Computer Science,
University of Kaiserslautern, 67663 Kaiserslautern, Germany (e-mail:
T. Kuhn is with the Fraunhofer Institute for Experimental Software
Engineering IESE, 67663 Kaiserslautern, Germany (e-mail:
Cite:Tobias Braun, Reinhard Gotzhein, and Thomas Kuhn, "Mode-Based Scheduling with Fast Mode-Signaling ― A Method for Efficient Usage of Network Time Slots," Journal of Advances in Computer Networks vol. 2, no. 1, pp. 48-57, 2014.