TTW: A Time‐Triggered Wireless Design for CPS

Romain Jacob1,a, Licong Zhang2,d, Marco Zimmerling3, Jan Beutel1,b, Samarjit Chakraborty2,e and Lothar Thiele1,c
1ETH Zurich, Switzerland
aRomain.Jacob@tik.ee.ethz.ch
bJan.Beutel@tik.ee.ethz.ch
cLothar.Thiele@tik.ee.ethz.ch
2TU Munich, Germany
dLicong.Zhang@rcs.ei.tum.de
eSamarjit.Chakraborty@rcs.ei.tum.de
3TU Dresden, Germany
marco.zimmerling@tu-dresden.de

ABSTRACT


Wired fieldbuses have long been proven effective in supporting Cyber‐Physical Systems (CPS). However, various domains are now striving for wireless solutions due to ease of deployment or novel functionality requiring the ability to support mobile devices. Low‐power wireless protocols have been proposed in response to this need, but requirements of a large class of CPS applications can still not be satisfied. We thus propose Time‐Triggered Wireless (TTW), a distributed low‐power wireless system design that minimizes communication energy consumption and offers end‐to‐end timing predictability, runtime adaptability, reliability, and low latency. Evaluation shows a 2× reduction in communication latency and 33‐40% lower radio‐on time compared with DRP, the closest related work, validating the suitability of TTW for new exciting wireless CPS applications.



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