On the Analysis of AoI-Reliability Tradeoff in Heterogeneous IIoT Networks

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Abstract

Age of information (AoI) and reliability are two critical metrics to support real-time applications in Industrial Internet of Things (IIoT). These metrics reflect different concepts of timely delivery of sensor information. Monitoring traffic serves to maintain fresh status updates, expressed in a low AoI, which is important for proper control and actuation actions. On the other hand, safety-critical information, e.g., emergency alarms, is generated sporadically and must be delivered with high reliability within a predefined deadline. In this work, we investigate the AoI-reliability trade-off in a real-time monitoring scenario that supports two traffic flows, namely AoI-oriented traffic and deadline-oriented traffic. Both traffic flows are transmitted to a central controller over an unreliable shared channel. We derive expressions of the average AoI for the AoI-oriented traffic and reliability, represented by Packet Loss Probability (PLP), for the deadline-oriented traffic using Discrete-Time Markov Chain (DTMC). We also conduct discrete-event simulations in MATLAB to validate the analytical results and evaluate the interaction between the two types of traffic flows. The results clearly demonstrate the tradeoff between the AoI and PLP in such heterogeneous IIoT networks and give insights on how to configure the network to achieve a target pair of AoI and PLP.
OriginalsprogEngelsk
Titel2022 IEEE 33rd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
Antal sider5
ForlagIEEE
Publikationsdato15 sep. 2022
Sider1038-1042
Artikelnummer9977563
ISBN (Trykt)978-1-6654-8054-3
DOI
StatusUdgivet - 15 sep. 2022
Begivenhed2022 IEEE 33rd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) - Kyoto, Japan
Varighed: 12 sep. 202215 sep. 2022

Konference

Konference2022 IEEE 33rd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
LokationKyoto, Japan
Periode12/09/202215/09/2022
NavnI E E E International Symposium Personal, Indoor and Mobile Radio Communications
ISSN2166-9570

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