Packet-drop design in URLLC for real-time wireless control systems

Chang, B., Zhao, G. , Chen, Z., Li, L. and Imran, M. A. (2019) Packet-drop design in URLLC for real-time wireless control systems. IEEE Access, 7, pp. 183081-183090. (doi: 10.1109/ACCESS.2019.2928681)

Abstract

In real-time wireless control systems, ultra-reliable and low-latency communication (URLLC) is critical for the connection between the remote controller and its control objective. Since both transmission delay and packet loss can lead to control performance loss, our goal is to optimize control performance by jointly considering control and URLLC constraints in this paper. To achieve this goal, we formulate an optimal problem to minimize control cost by optimizing the packet drop and wireless resource allocation. To solve the problem, we analyze the relationship between communication and control. Then, based on the relationship, we decompose the original problem into two subproblems: 1) an optimal packet-drop problem to minimize control cost and 2) an optimal resource allocation problem to minimize communication packet error. Finally, the corresponding solutions for each subproblem can be obtained. Compared with the traditional method only considering the communication aspect, the proposed packet-drop and resource allocation method shows remarkable performance gain in terms of control cost.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Imran, Professor Muhammad and Li, Dr Emma and Chang, Bo and Zhao, Dr Guodong
• Authors: Chang, B., Zhao, G., Chen, Z., Li, L., and Imran, M. A.
• College/School: College of Science and Engineering; College of Science and Engineering > School of Engineering; College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: IEEE Access
• Publisher: IEEE
• ISSN: 2169-3536
• ISSN (Online): 2169-3536
• Published Online: 15 July 2019
• Copyright Holders: Copyright © 2019 The Authors
• First Published: First published in IEEE Access 7: 183081-183090
• Publisher Policy: Reproduced under a Creative Commons License