Dynamic Communication QoS Design for Real-Time Wireless Control Systems

Bo Chang*, Guodong Zhao, Lei Zhang, Muhammad Ali Imran, Zhi Chen, Liying Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
3 Downloads (Pure)

Abstract

In the coming fifth-generation (5G) cellular networks, ultra-reliable and low-latency communication (URLLC) is treated as an indispensable service to enable real-time wireless control systems. However, the extremely high quality-of-service (QoS) in URLLC causes significant wireless resource consumption. Moreover, to obtain good control performance may not always require extremely high communication QoS. In this paper, we propose a communication-control co-design scheme to reduce wireless resource consumption, where we obtain a dynamic communication QoS design method to reduce the energy consumption by jointly using extremely high QoS and a relatively low QoS. In this scheme, we first explore the control process served by different communication QoS levels and find that the whole control process can be divided into two phases, where different QoS levels have their advantages in different phases. Then, we obtain a threshold to decide when the extremely high QoS or relatively low QoS should be provided by communications. Simulation results demonstrate that our method can effectively reduce communication energy consumption while maintaining good control performance.

Original languageEnglish
Article number8922780
Pages (from-to)3005-3015
Number of pages11
JournalIEEE Sensors Journal
Volume20
Issue number6
Early online date4 Dec 2019
DOIs
Publication statusPublished - 15 Mar 2020
Externally publishedYes

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