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In this work, we consider the problem of jointly minimizing the average cost of sampling and transmitting status updates by users over a wireless channel subject to average Age of Information (AoI) constraints. Errors in the transmission…

Networking and Internet Architecture · Computer Science 2022-11-28 Emmanouil Fountoulakis , Marian Codreanu , Anthony Ephremides , Nikolaos Pappas

A large body of applications that involve monitoring, decision making, and forecasting require timely status updates for their efficient operation. Age of Information (AoI) is a newly proposed metric that effectively captures this…

Information Theory · Computer Science 2018-10-09 George Stamatakis , Nikolaos Pappas , Apostolos Traganitis

Age of Information (AoI) has gained importance as a Key Performance Indicator (KPI) for characterizing the freshness of information in information-update systems and time-critical applications. Recent theoretical research on the topic has…

Networking and Internet Architecture · Computer Science 2019-08-29 Hasan Burhan Beytur , Sajjad Baghaee , Elif Uysal

In 5G and beyond communication systems, the notion of latency gets great momentum in wireless connectivity as a metric for serving real-time communications requirements. However, in many applications, research has pointed out that latency…

Networking and Internet Architecture · Computer Science 2023-05-16 Emmanouil Fountoulakis , Themistoklis Charalambous , Anthony Ephremides , Nikolaos Pappas

Age of Information (AoI) is emerging as a novel metric for measuring information freshness in real-time monitoring systems. For computation-intensive status data, the information is not revealed until being processed. We consider a status…

Information Theory · Computer Science 2025-08-21 Jianhang Zhu , Jie Gong

Popular methods to quantify transmitted data quality are the Age of Information (AoI), the Query Age of Information (QAoI), and the Age of Incorrect Information (AoII). We consider these metrics in a point-to-point wireless communication…

Information Theory · Computer Science 2025-03-18 Wanja de Sombre , Andrea Ortiz , Frank Aurzada , Anja Klein

The timely sharing of raw sensing information in the vehicular networks (VNETs) is essential to safety. In order to improve the freshness of sensing information, joint scheduling of multi-dimensional resources such as communication and…

Networking and Internet Architecture · Computer Science 2022-04-14 Ning Jiang , Shi Yan , Zhuohan Liu , Chunjing Hu , Mugen Peng

In this letter, a reconfigurable intelligent surface (RIS)-assisted simultaneous wireless information and power transfer (SWIPT) network is investigated. To quantify the freshness of the data packets at the information receiver, the age of…

Signal Processing · Electrical Eng. & Systems 2022-10-05 Wanting Lyu , Yue Xiu , Jun Zhao , Zhongpei Zhang

The age of information (AoI) has become a central measure of data freshness in modern wireless systems, yet existing surveys either focus on classical AoI formulations or provide broad discussions of reinforcement learning (RL) in wireless…

Machine Learning · Computer Science 2025-12-29 Alimu Alibotaiken , Suyang Wang , Oluwaseun T. Ajayi , Yu Cheng

Since Age of Information (AoI) has been proposed as a metric that quantifies the freshness of information updates in a communication system, there has been a constant effort in understanding and optimizing different statistics of the AoI…

Information Theory · Computer Science 2019-05-13 Jaya Prakash Champati , Hussein Al-Zubaidy , James Gross

Age of Information (AoI) has emerged as a key metric for assessing data freshness in IoT applications, where a large number of devices report time-stamped updates to a monitor. Such systems often rely on random access protocols based on…

Information Theory · Computer Science 2025-06-06 Andrea Munari , Cedomir Stefanovic

We consider a real-time monitoring system where a source node (with energy limitations) aims to keep the information status at a destination node as fresh as possible by scheduling status update transmissions over a set of channels. The…

Networking and Internet Architecture · Computer Science 2025-09-24 Mohamed A. Abd-Elmagid , Ming Shi , Eylem Ekici , Ness B. Shroff

A queueing system handling a sequence of message arrivals is considered where each message obsoletes all previous messages. The objective is to assess the freshness of the latest message/information that has been successfully transmitted,…

Performance · Computer Science 2018-10-12 George Kesidis , Takis Konstantopoulos , Michael Zazanis

The age of information (AoI) performance analysis is essential for evaluating the information freshness in the large-scale mobile edge computing (MEC) networks. This work proposes the earliest analysis of the mean AoI (MAoI) performance of…

Systems and Control · Electrical Eng. & Systems 2024-09-25 Ying Dong , Hang Xiao , Haonan Hu , Jiliang Zhang , Qianbin Chen , Jie Zhang

Device-to-device (D2D) links scheduling for avoiding excessive interference is critical to the success of wireless D2D communications. Most of the traditional scheduling schemes only consider the maximum throughput or fairness of the system…

Information Theory · Computer Science 2022-02-08 Ling Luo , Zhenyu Liu , Zhiyong Chen , Min Hua , Wenqing Li , Bin Xia

Age of information (AoI) is an effective performance metric measuring the freshness of information and is popular for applications involving status update. Most of the existing works have adopted average AoI as the metric, which cannot…

Information Theory · Computer Science 2022-06-10 Guan-Yu Lin , Yu-Chih Huang , Yu-Pin Hsu

Age of Information (AoI) is a key metric used for evaluating data freshness in communication networks, particularly in systems requiring real-time updates. In positioning applications, maintaining low AoI is critical for ensuring timely and…

Signal Processing · Electrical Eng. & Systems 2026-03-30 Wasif J. Hussain , Don-Roberts Emenonye , R. Michael Buehrer , Harpreet S. Dhillon

In this paper, we consider a wireless network consisting of a base station (BS) that is serving multiple real-time traffic streams forwarding information updates to their destinations in order to sustain the freshness of information for…

Signal Processing · Electrical Eng. & Systems 2022-04-14 Ali Muhammad , Mohamed Elhattab , Mohamed Amine Arfaoui , Ahmed Al-Hilo , Chadi Assi

Age of Information (AoI) has become an important concept in communications, as it allows system designers to measure the freshness of the information available to remote monitoring or control processes. However, its definition tacitly…

Networking and Internet Architecture · Computer Science 2022-02-02 Federico Chiariotti , Josefine Holm , Anders E. Kalør , Beatriz Soret , Søren K. Jensen , Torben B. Pedersen , Petar Popovski

This paper investigates the age of information (AoI) for a radio frequency (RF) energy harvesting (EH) enabled network, where a sensor first scavenges energy from a wireless power station and then transmits the collected status update to a…

Information Theory · Computer Science 2019-01-29 Yang Lu , Ke Xiong , Pingyi Fan , Zhangdui Zhong , Khaled Ben Letaief