Paper Info
Title
Age of Loop Oriented Wireless Networked Control System: Communication and Control Co-Design in the FBL Regime
Abstract
In this paper, age of loop (AoL) is investigated for communication and control co-design in wireless networked control systems (WNCSs), to ensure information freshness in the sensor-controller-actuator loop with two-way delay. Also, the impact of fading channel and finite block length due to limited transmission bits are considered. A closed-form expression for Peak AoL(PAoL) is derived with respect to block length and the number of allowable transmissions in the presence of block error probability. It is shown that the average PAoL is less than the sum of the average peak Age of information (PAoI) in uplink (PAoU) and the PAoI in downlink (PAoD), due to the coupling of uplink and downlink. In addition, the average PAoL is proved to be convex with respect to block length and mono-decreasing with respect to the allowable transmission time. We then propose a low-complexity PAoL-aware block length adaptation scheme with retransmission policy and optimal control. Simulation results verify the correctness of our analytical results and demonstrate the effectiveness of the proposed PAoL-aware block length adaptation scheme in terms of information freshness and control performance.
Year
DOI
Venue
2022
10.1109/INFOCOMWKSHPS54753.2022.9798216
IEEE INFOCOM 2022 - IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS)
Keywords
DocType
ISSN
Age of loop,finite block length,communication and control co-design
Conference
2159-4228
ISBN
Citations 
PageRank 
978-1-6654-0927-8
0
0.34
References 
Authors
8
6
Name
Order
Citations
PageRank
Jie Cao100.68
Xu Zhu237147.63
Sumei Sun31276144.61
Petar Popovskiz400.34
Shaohan Feng500.34
Yufei Jiang63222.37