Dual-mode Ultra Reliable Low Latency Communications for Industrial Wireless Control
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A4 Artikkeli konferenssijulkaisussa
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Date
2022
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en
Pages
7
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2022 IEEE 95th Vehicular Technology Conference - Spring, VTC 2022-Spring - Proceedings, IEEE Vehicular Technology Conference, Volume 2022-June
Abstract
This paper studies communications service availability for industrial wireless control systems. We consider a motion controller with a continuous closed-loop control link to a group of actuator devices on a factory floor. The goal is to satisfy end-to-end latency for each packet and to guarantee that the communication service will not be un-available for longer than a survival time. We propose to decouple the scheduling operation between the normal and survival modes of operation, enabling a dual-mode ultra-reliable and low-latency communications (URLLC) scheduler. Scheduler strategies for the survival mode are presented, targeting link adaptation and signal to interference and noise ratio (SINR) estimation in presence of temporal and spatial channel correlation. Through numerical examples, we investigate the impact of channel correlation on the schedulers ability to target the required reliability for each mode. We further present our findings on system-level performance evaluation of such scheduling strategies by adopting a realistic system setup and channel model to obtain insights with high level of realism. Extensive simulation results are presented which demonstrate significant reduction in resource utilization with the proposed dual-mode scheduler when compared to single-mode URLLC scheduling. Specifically, our results demonstrate that the scheduler should target moderate packet error rate (PER) for normal mode of operation and very low PER for the survival mode; the latter guarantees service availability while the former saves radio resources.Description
Funding Information: ACKNOWLEDGMENT This work was supported in part by the Finnish public funding agency for research, Business Finland under the project “5G VIIMA”, grant number 6430/31/2018. 5G VIIMA is part of 5G Test Network Finland (5GTNF). The work of OT was funded in part by the Academy of Finland (grant 319484). Publisher Copyright: © 2022 IEEE.
Keywords
IIoT, service availability, survival time, URLLC
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Citation
Zhou, L, Tirkkonen, O, Parts, U, Khosravirad, S R, Baracca, P, Korpi, D & Uusitalo, M 2022, Dual-mode Ultra Reliable Low Latency Communications for Industrial Wireless Control . in 2022 IEEE 95th Vehicular Technology Conference - Spring, VTC 2022-Spring - Proceedings . IEEE Vehicular Technology Conference, IEEE, IEEE Vehicular Technology Conference, Helsinki, Finland, 19/06/2022 . https://doi.org/10.1109/VTC2022-Spring54318.2022.9860905