A Spatiotemporal Framework for Information Freshness in IoT Uplink Networks

Publikationstyp
Conference Paper
Date Issued
2020-11
Sprache
English
Author(s)
Emara, Mustafa  orcid-logo
Elsawy, Hesham  
Bauch, Gerhard  
Institut
Nachrichtentechnik E-8  
TORE-URI
http://hdl.handle.net/11420/9104
Article Number
9348865
Citation
IEEE 92nd Vehicular Technology Conference, VTC 2020-Fall: 9348865
Contribution to Conference
IEEE 92nd Vehicular Technology Conference, VTC 2020-Fall  
Publisher DOI
10.1109/VTC2020-Fall49728.2020.9348865
Scopus ID
2-s2.0-85095495304
Publisher
IEEE
Timely message delivery is a key enabler for Internet of Things (IoT) and cyber-physical systems to support wide range of context-dependent applications. Conventional time-related metrics, such as delay, fails to characterize the timeliness of the system update or to capture the freshness of information from application perspective. Age of information (AoI) is a time-evolving measure of information freshness that has received considerable attention during the past years. In the foreseen large-scale and dense IoT networks, joint temporal (i.e., queue aware) and spatial (i.e., mutual interference aware) characterization of the AoI is required. In this work we provide a spatiotemporal framework that captures the peak AoI for large scale IoT uplink network. To this end, the paper quantifies the peak AoI for large-scale cellular network with Bernoulli uplink traffic. Simulation results are conducted to validate the proposed model and show the effect of traffic load and decoding threshold. Insights are driven to characterize the network stability frontiers and the location-dependent performance within the network.
Subjects
Age of information
Internet of Things
queueing theory
spatiotemporal models
stochastic geometry