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In this letter, we propose reliable covert communications with the aim of minimizing age of information (AoI) in the time-varying channels. We named the time duration that channel state information (CSI) is valid as a new metric, as age of…

Information Theory · Computer Science 2025-07-22 Shima Salar Hosseini , Paeiz Azmi , Nader Mokari

Emerging applications such as autonomous driving and industrial automation demand ultra-reliable and low-latency communication (URLLC), where maintaining fresh and timely information is critical. A key performance metric in such systems is…

Systems and Control · Electrical Eng. & Systems 2026-02-27 Maryam Ansarifard , Mohit K. Sharma , Kishor C. Joshi , George Exarchakos

Detecting anomalies in multivariate time series is essential for monitoring complex industrial systems, where high dimensionality, limited labeled data, and subtle dependencies between sensors cause significant challenges. This paper…

Machine Learning · Computer Science 2025-11-18 Bahareh Golchin , Banafsheh Rekabdar

With the rapid development of low-altitude wireless networking, autonomous aerial vehicles (AAVs) have emerged as critical enablers for timely and reliable data delivery, particularly in remote or underserved areas. In this context, the age…

Networking and Internet Architecture · Computer Science 2025-09-03 Zifan Lang , Guixia Liu , Jiahui Li , Geng Sun , Zemin Sun , Jiacheng Wang , Dusit Niyato , Victor C. M. Leung

Wireless communications for status update are becoming increasingly important, especially for machine-type control applications. Existing work has been mainly focused on Age of Information (AoI) optimizations. In this paper, a status-aware…

Information Theory · Computer Science 2020-02-05 Zhiyuan Jiang , Zixu Cao , Siyu Fu , Fei Peng , Shan Cao , Shunqing Zhang , Shugong Xu

Scheduling the transmission of time-sensitive information from a source node to multiple users over error-prone communication channels is studied with the goal of minimizing the long-term average age of information (AoI) at the users. A…

Information Theory · Computer Science 2021-02-22 Elif Tugce Ceran , Deniz Gunduz , Andras Gyorgy

The age of information (AoI) is a recently proposed metric for quantifying data freshness in real-time status monitoring systems where timeliness is of importance. In this paper, the problem of characterizing and controlling the AoI is…

Signal Processing · Electrical Eng. & Systems 2021-05-21 Minsu Kim , Sungho Lee , Chanwon Park , Jemin Lee , Walid Saad

In the realm of emerging real-time networked applications such as cyber-physical systems (CPS), the Age of Information (AoI) has emerged as a pivotal metric for evaluating timeliness. To meet the high computational demands, such as those in…

Machine Learning · Computer Science 2026-01-05 Lyudong Jin , Ming Tang , Jiayu Pan , Meng Zhang , Hao Wang

Stringent demands for timely information delivery, driven by the widespread adoption of real-time applications and the Internet of Things, have established the age of information (AoI) as a critical metric for quantifying data freshness.…

Networking and Internet Architecture · Computer Science 2025-07-22 Muthukrishnan Senthilkumar , Aresh Dadlani , Hina Tabassum

Timely information updates are critical to time-sensitive applications in networked monitoring and control systems. In this paper, the problem of real-time status update is considered for a cognitive radio network (CRN), in which the…

Networking and Internet Architecture · Computer Science 2020-01-29 Yao Zhao , Bo Zhou , Walid Saad , Xiliang Luo

Remote tracking systems play a critical role in applications such as IoT, monitoring, surveillance and healthcare. In such systems, maintaining both real-time state awareness (for online decision making) and accurate reconstruction of…

Systems and Control · Electrical Eng. & Systems 2025-05-20 Sunjung Kang , Vishrant Tripathi , Christopher G. Brinton

Information freshness is a status update timeliness indicator of utmost importance to several real-time applications, such as connected and autonomous driving. The Ageof- Information (AoI) metric is widely considered as useful to quantify…

Information Theory · Computer Science 2020-03-06 Mustafa Emara , Miltiades C. Filippou , Dario Sabella

Asynchronous Distributed Reinforcement Learning (DRL) can suffer from degraded convergence when model updates become stale, often the result of network congestion and packet loss during large-scale training. This work introduces a network…

Networking and Internet Architecture · Computer Science 2025-07-09 Nehal Baganal Krishna , Anam Tahir , Firas Khamis , Mina Tahmasbi Arashloo , Michael Zink , Amr Rizk

By deploying machine-learning algorithms at the network edge, edge learning can leverage the enormous real-time data generated by billions of mobile devices to train AI models, which enable intelligent mobile applications. In this emerging…

Information Theory · Computer Science 2019-03-20 Dongzhu Liu , Guangxu Zhu , Jun Zhang , Kaibin Huang

This study considers a wireless network where multiple nodes transmit status updates to a base station (BS) via a shared, error-free channel with limited bandwidth. The status updates arrive at each node randomly. We use the Age of…

Information Theory · Computer Science 2025-03-14 Yuqiao He , Yuchao Chen , Jintao Wang , Jian Song

In this paper, we investigate a model relevant to semantics-aware goal-oriented communications, and we propose a new metric that incorporates the utilization of information in addition to its timelines. Specifically, we consider the…

Information Theory · Computer Science 2023-12-22 Ali Nikkhah , Anthony Ephremides , Nikolaos Pappas

In real-time status update services for the Internet of Things (IoT), the timely dissemination of information requiring timely updates is crucial to maintaining its relevance. Failing to keep up with these updates results in outdated…

Networking and Internet Architecture · Computer Science 2024-10-03 Seifu Birhanu Tadele , Binayak Kar , Frezer Guteta Wakgra , Asif Uddin Khan

The recent interweaving of AI-6G technologies has sparked extensive research interest in further enhancing reliable and timely communications. \emph{Age of Information} (AoI), as a novel and integrated metric implying the intricate…

Information Theory · Computer Science 2023-04-18 Kunpeng Liu , Aimin Li , Shaohua Wu

Monitoring a process/phenomenon of specific interest is prevalent in Cyber-Physical Systems (CPS), remote healthcare, smart buildings, intelligent transport, industry 4.0, etc. A key building block of the monitoring system is a sensor…

Information Theory · Computer Science 2025-03-05 Shivang Garde , Jaya Prakash Champati , Arpan Chattopadhyay

Age-of-information (AoI) is a critical metric that quantifies the freshness of data in communication systems. In the era of the Internet of Things (IoT), data collected by resource-constrained devices often need to be transmitted to a…

Data Structures and Algorithms · Computer Science 2025-05-22 Ching-Chi Lin , Mario Günzel , Jian-Jia Chen