Target Wake Time Scheduling for Time-Sensitive Networking in the Industrial IoT
Paper i proceeding, 2024

Time Sensitive Networking (TSN) is fundamental for the low-latency, reliable, and energy-efficient networks that will enable the Industrial Internet of Things (IIoT). Wi-Fi has historically been considered unfit for TSN, as channel contention and collisions prevent deterministic transmission delays. However, this issue can be overcome using Target Wake Time (TWT) to instruct Wi-Fi stations to wake up and transmit in non-overlapped TWT Service Periods (SPs) and sleep in the remaining time. In this paper, we first formulate the TWT Acceptance and Scheduling Problem (TASP), whose objective is to schedule TWT SPs as to maximize traffic throughput and energy efficiency while respecting Age of Information (AoI) constraints. Then, since the TASP is NP-hard, we propose the TASP Efficient Resolver (TASPER), a heuristic strategy to find near-optimal solutions efficiently. Finally, we compare TASPER with several baselines through numerical analysis and simulations, which we performed using a TWT-compatible simulator based on ns-3. We demonstrate that TASPER schedules traffic with up to 21.23% higher priority-weighted admission ratio and saves up to 7.42% energy compared to the ShortestFirst strategy, all while satisfying AoI constraints for 99.5% of transmissions.

time-sensitive networking

scheduling

target wake time

IIoT

Författare

C. Puligheddu

Politecnico di Torino

Fabio Busacca

Universita degli Studi di Catania

Riccardo Rusca

Politecnico di Torino

Francesco Raviglione

Politecnico di Torino

Claudio Casetti

Politecnico di Torino

Carla Fabiana Chiasserini

Politecnico di Torino

Nätverk och System

Sergio Palazzo

Politecnico di Torino

IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

21669570 (ISSN) 21669589 (eISSN)


9798350362244 (ISBN)

35th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2024
Valencia, Spain,

Ämneskategorier (SSIF 2025)

Kommunikationssystem

Telekommunikation

DOI

10.1109/PIMRC59610.2024.10817339

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Senast uppdaterat

2025-01-31