TTW: A Time-Triggered-Wireless Design for CPS [ Extended version ]

TL;DR

This paper introduces TTW, a wireless system for cyber-physical systems that reduces latency and energy use while ensuring timing predictability, making wireless CPS more practical for real-world deployment.

Contribution

The paper presents TTW, a novel low-power wireless design that achieves improved latency, energy efficiency, and timing predictability for CPS applications.

Findings

Latency reduced by 2x compared to existing approaches.

Energy consumption decreased by 33-40%.

Validated suitability for real-world wireless CPS applications.

Abstract

Wired field buses have proved their effectiveness to support Cyber-Physical Systems (CPS). However, in avionics, for ease of deployment, or for new functionality featuring mobile devices, there is a strong interest for wireless solutions. Low-power wireless protocols have been proposed, but requirements of a large class of CPS applications can still not be satisfied. This paper presents Time-Triggered-Wireless (TTW), a distributed low-power wireless system design that minimizes energy consumption and offers end-to-end timing predictability, adaptability, reliability, low latency. Our evaluation shows a reduction of communication latency by a factor 2x and of energy consumption by 33-40% compared to state-of-the-art approaches. This validates the suitability of TTW for wireless CPS applications and opens the way for implementation and real-world experience with industry partners.