Minimizing AoI under Covertness Constraints in Internet of Things Networks

Danyang Wang*, Huimin Qin, Zan Li, Peihan Qi, Ning Zhang, Xianfu Chen, Keping Yu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Covertly collecting the latest status information is great crucial for the controller to make decision in Internet of Things (IoT) networks. In this paper, age of information (AoI) is leveraged to evaluate the information freshness. To improve the information freshness, packet re-transmission is exploited at the transmitter, while the re-transmission increases the probability that the transmission behavior is being detected by the adversaries. Hence, we propose a time constrained re-transmission strategy to make a trade-off between the AoI and transmission covertness. Specifically, the maximum allowable re-transmission times have different effects on the AoI and transmission covertness. We formulate an optimization problem to minimize AoI under the constraint of system covertness. The closed-form expression of the average AoI and the expected probability of error detection are derived. Then, the number of maximum re-transmission time slots is optimized to minimize the average AoI. Finally, numerical results demonstrate that the optimal choice of the re-transmission times is the upper bound value of the consecutive transmission time slots that satisfies the covertness constraint. Proposed retransmission strategy can guarantee the information freshness under a given covertness constraint.

Original languageEnglish
Title of host publication2021 IEEE 3rd International Conference on Frontiers Technology of Information and Computer, ICFTIC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages694-700
Number of pages7
ISBN (Electronic)9781665406055
DOIs
Publication statusPublished - 2021
Event3rd IEEE International Conference on Frontiers Technology of Information and Computer, ICFTIC 2021 - Virtual, Online, United States
Duration: 2021 Nov 122021 Nov 14

Publication series

Name2021 IEEE 3rd International Conference on Frontiers Technology of Information and Computer, ICFTIC 2021

Conference

Conference3rd IEEE International Conference on Frontiers Technology of Information and Computer, ICFTIC 2021
Country/TerritoryUnited States
CityVirtual, Online
Period21/11/1221/11/14

Keywords

  • AoI
  • Covert communication
  • Internet of Things
  • Rayleigh fading
  • component

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computer Science Applications
  • Computer Vision and Pattern Recognition
  • Information Systems
  • Information Systems and Management
  • Modelling and Simulation

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