Packet-Drop Design in URLLC for Real-Time Wireless Control Systems

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)
2 Downloads (Pure)

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.

Original languageEnglish
Pages (from-to)183081-183090
Number of pages10
JournalIEEE Access
Volume7
Early online date15 Jul 2019
DOIs
Publication statusPublished - 27 Dec 2019
Externally publishedYes

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