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Timely and informative data dissemination in communication networks is essential for enhancing system performance and energy efficiency, as it reduces the transmission of outdated or redundant data. Timeliness metrics, such as Age of…

Networking and Internet Architecture · Computer Science 2026-01-09 Erfan Delfani , Nikolaos Pappas

In this paper, we consider a scenario where a source continuously monitors an object and sends time-stamped status updates to a destination through a rate-limited link. We assume updates arrive randomly at the source according to a…

Information Theory · Computer Science 2019-05-14 Boyu Wang , Songtao Feng , Jing Yang

This paper investigates the Age of Incorrect Information (AoII) in a communication system whose channel suffers a random delay. We consider a slotted-time system where a transmitter observes a dynamic source and decides when to send updates…

Information Theory · Computer Science 2025-12-19 Yutao Chen , Anthony Ephremides

In this work, we study a status update system with a source node sending timely information to the destination through a channel with random delay. We measure the timeliness of the information stored at the receiver via the Age of…

Information Theory · Computer Science 2022-01-19 Haoyue Tang , Yuchao Chen , Jintao Wang , Jingzhou Sun , Jian Song

Age of information (AoI) has been widely accepted as a measure quantifying freshness of status information in real-time status update systems. In many of such systems, multiple sources share a limited network resource and therefore the AoIs…

Performance · Computer Science 2020-06-08 Yukang Jiang , Naoto Miyoshi

Received samples of a stochastic process are processed by a server for delivery as updates to a monitor. Each sample belongs to a class that specifies a distribution for its processing time and a function that describes how the value of the…

Information Theory · Computer Science 2024-08-23 Ahmed Arafa , Roy D. Yates

As an emerging metric of communication systems, Age of Information (AoI) has been derived to have a critical impact in networked control systems with unreliable information links. This work sets up a novel model of outage probability in a…

Information Theory · Computer Science 2021-11-30 Bin Han , Siyu Yuan , Zhiyuan Jiang , Yao Zhu , Hans D. Schotten

This paper characterizes the structure of the Age of Information (AoI)-optimal policy in wireless powered communication systems while accounting for the time and energy costs of generating status updates at the source nodes. In particular,…

Information Theory · Computer Science 2020-06-12 Mohamed A. Abd-Elmagid , Harpreet S. Dhillon , Nikolaos Pappas

Age of Information (AoI), measures the time elapsed since the last received information packet was generated at the source. We consider the problem of AoI minimization for single-hop flows in a wireless network, under pairwise interference…

Information Theory · Computer Science 2018-03-20 Rajat Talak , Sertac Karaman , Eytan Modiano

Scheduling the transmission of time-sensitive data 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 under a constraint on the…

Machine Learning · Computer Science 2018-06-04 Elif Tuğçe Ceran , Deniz Gündüz , András György

Age of information (AoI) measures information freshness at the receiver. AoI may provide insights into quality of service in communication systems. For this reason, it has been used as a cross-layer metric for wireless communication…

Systems and Control · Electrical Eng. & Systems 2020-05-06 Onur Ayan , H. Murat Gürsu , Sandra Hirche , Wolfgang Kellerer

We consider a status updating system where having timely knowledge about the information source at the destination (monitor) is of utmost importance. By utilizing the age of information (AoI) metric, the freshness of status update over an…

Information Theory · Computer Science 2019-11-15 Alireza Javani , Marwen Zorgui , Zhiying Wang

Age of information (AoI) is a recently proposed metric for measuring information freshness. AoI measures the time that elapsed since the last received update was generated. We consider the problem of minimizing average and peak AoI in a…

Information Theory · Computer Science 2019-12-10 Rajat Talak , Sertac Karaman , Eytan Modiano

Delivering timely status updates in a timeliness-critical communication system is of paramount importance to assist accurate and efficient decision making. Therefore, the topic of analyzing Age of Information has aroused new research…

Information Theory · Computer Science 2022-04-05 Aimin Li , Shaohua Wu , Jian Jiao , Ning Zhang , Qinyu Zhang

In this paper, we study age of information (AoI) optimization for status updating in an integrated sensing and communication (ISAC) system. We consider a discrete-time architecture in which a base station interacts with a physical…

Information Theory · Computer Science 2026-05-26 Marco Zanni , Mohamad Assaad , Touraj Soleymani

In Internet of Things (IoTs), the freshness of system status information is crucial for real-time monitoring and decision-making. This paper studies the transmission scheduling problem in wireless monitoring systems, where information…

Networking and Internet Architecture · Computer Science 2026-03-09 Yuchong Zhang , Yi Cao , Xianghui Cao

There is a growing interest in analysing the freshness of data in networked systems. Age of Information (AoI) has emerged as a popular metric to quantify this freshness at a given destination. There has been a significant research effort in…

Information Retrieval · Computer Science 2020-01-22 Jaya Prakash Champati , Ramana R. Avula , Tobias J. Oechtering , James Gross

Age-of-Information (AoI) is a recently introduced metric for network operation with sensor applications which quantifies the freshness of data. In the context of networked control systems (NCSs), we compare the worth of the AoI metric with…

Information Theory · Computer Science 2019-03-14 Onur Ayan , Mikhail Vilgelm , Markus Klügel , Sandra Hirche , Wolfgang Kellerer

While the notion of age of information (AoI) has recently been proposed for analyzing ultra-reliable low-latency communications (URLLC), most of the existing works have focused on the average AoI measure. Designing a wireless network based…

Networking and Internet Architecture · Computer Science 2019-12-24 Mohamed K. Abdel-Aziz , Sumudu Samarakoon , Chen-Feng Liu , Mehdi Bennis , Walid Saad

This paper investigates the information freshness of two-hop networks. Age of information (AoI) is used as the metric to characterize the information freshness, defined as the time elapsed since the latest received status update was…

Networking and Internet Architecture · Computer Science 2022-01-26 Jian Feng , Haoyuan Pan , Tse-Tin Chan , Jiaxin Liang