Beyond Fresh Update: Packet Management for Real-Time Feedback Control

Tong, X., Li, L. , Zhao, G. , Chang, B. and Chen, Z. (2020) Beyond Fresh Update: Packet Management for Real-Time Feedback Control. In: IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2020), 31 Aug - 03 Sep 2020, ISBN 9781728144900 (doi: 10.1109/PIMRC48278.2020.9217335)

Abstract

In real-time feedback control systems, the freshness of the packet is crucial to control performance, where packet management is vital to keep data fresh. Recently, age of information (AOI) has been used to measure the freshness of the update information, where minimizing AOI becomes popular in system designs. In this paper, we find that minimizing AOI is not always equivalent to maximizing the control performance. In particular, we define a metric, called the age of stale information (AOSI), to link the instability of the control system to AOI. By minimizing AOSI, we can maximize the control performance, and also reduce the communication cost.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Zhao, Dr Guodong and Li, Dr Emma
• Authors: Tong, X., Li, L., Zhao, G., Chang, B., and Chen, Z.
• College/School: College of Science and Engineering > School of Engineering; College of Science and Engineering > School of Engineering > Systems Power and Energy
• ISSN: 2166-9589
• ISBN: 9781728144900
• Copyright Holders: Copyright © 2020 IEEE
• First Published: First published in 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications
• Publisher Policy: Reproduced in accordance with the publisher copyright policy

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