Age of Information for Actuation Update in Real-Time Wireless Control Systems

Chang, B., Li, L. , Zhao, G. , Meng, Z., Imran, M. A. and Chen, Z. (2020) Age of Information for Actuation Update in Real-Time Wireless Control Systems. In: 3rd IEEE INFOCOM Age of Information Workshop, Toronto, ON, Canada, 06 Jul 2020, ISBN 9781728186955 (doi:10.1109/INFOCOMWKSHPS50562.2020.9163049)

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Abstract

In this paper, we introduce a generalized definition of age of information (AoI) for actuation update in real-time wireless control systems. In such a system, a general queueing model, i.e., M/M/1/1 queueing model, is used to describe the actuation update, in which the sampling packets arrive at the remote controller following the Poisson process, the process from the controller to the actuator follows the exponential distribution, and the actuation intends to update at the actuator at the predictive time. Then, the initial time of the AoI for the new actuation update is the predictive time for the latest update, which is significantly different from the traditional calculation in status update. By the relationship between communication time from the controller to the actuator and predictive time, the AoI calculation falls into two cases, where the conventional AoI in status update is a specific case in this paper. Simulation results show the performance of our method.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Imran, Professor Muhammad and Li, Dr Emma and Chang, Bo and Meng, Zhen and Zhao, Dr Guodong
Authors: Chang, B., Li, L., Zhao, G., Meng, Z., Imran, M. A., and Chen, Z.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
ISBN:9781728186955
Copyright Holders:Copyright © 2020 IEEE
First Published:First published in IEEE INFOCOM 2020 - IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS)
Publisher Policy:Reproduced in accordance with the publisher copyright policy
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