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A decomposition Approach for SMT-based Schedule Synthesis for Time-Triggered Networks
Publication Type:
Conference/Workshop Paper
Venue:
20th IEEE International Conference on Emerging Technologies and Factory Automation
Abstract
Abstract—Real-time networks have tight communication latency
and minimal jitter requirements. One way to ensure these
requirements is the implementation of a static schedule, which
defines the transmission points in time of time-triggered frames.
Synthesizing such static schedules is known to be an NP-complete
problem where the complexity is driven by the large number of
constraints imposed by the network. Satisfiabily Modulo Theories
(SMT) have been proven powerful tools to synthesize schedules of
medium-to-large industrial networks. However, the schedules of
new extremely large networks, such as integrated multi-machine
factory networks, are defined by an extremely large number of
constraints exceeding the capabilities of being synthesized by the
tool alone.
This paper presents a decomposition approach that will allow
us to improve to synthesize schedules with up to two orders of
magnitude in terms of the number of constraints that can be
handled. We also present an implementation of a dependency
tree on top of the decomposition approach to address applicationimposed
constraints between frames.
Bibtex
@inproceedings{Pozo3991,
author = {Francisco Pozo and Guillermo Rodriguez-Navas and Hans Hansson and Wilfried Steiner},
title = {A decomposition Approach for SMT-based Schedule Synthesis for Time-Triggered Networks},
month = {September},
year = {2015},
booktitle = {20th IEEE International Conference on Emerging Technologies and Factory Automation },
url = {http://www.es.mdu.se/publications/3991-}
}