Jayabal, R. J., Wong, D. T. C., Goh, L. K., Zhang, X., Pang, C. M., & Sun, S. (2025). Survey, Design and Evaluation of TGT-HC: A Time-Aware Shaper MAC for Wireless TSN. IEEE Transactions on Mobile Computing, 24(6), 5433–5445. https://doi.org/10.1109/tmc.2025.3535413
Abstract:
Ultra-Reliable Low-Latency Communication (URLLC) and Time-Sensitive Networking (TSN) are essential for enhancing 5G and Wi-Fi 6/7 to support real-time industrial automation. However, our survey shows that existing Medium Access Control (MAC) schemes still face unresolved latency issues. This paper introduces the Transmission Gating Time Hyperchannel (TGT-HC), a novel contention-free Carrier-Sense Multiple Access (CSMA) scheme driven by a per-flow Time-Aware Shaper (TAS) scheduler. Our analytical results, simulations, and prototyping with the Universal Software Radio Peripheral (USRP) demonstrate that TGT-HC achieves latency performance comparable to a First-Come-First-Served (FCFS) single server for real-time cyclic traffic, even under high frame error rates (FERs). Given its promising performance, we advocate for reconsidering contention-free CSMA as a viable MAC scheme in next-generation URLLC/TSN.
License type:
Publisher Copyright
Funding Info:
This research / project is supported by the Agency for Science, Technology and Research - RIE2020 Industry Alignment Fund - Pre-Positioning - A*STAR Industrial Internet of Things Research Program
Grant Reference no. : A1788a0023