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Generative Artificial Intelligence (GenAI) is playing an increasingly important role in enriching and facilitating human life by generating various useful information, of which real-time GenAI is a significant part and has great potential…

Systems and Control · Electrical Eng. & Systems 2025-04-08 Yuquan Xiao , Qinghe Du , Wenchi Cheng , George K. Karagiannidis , Arumugam Nallanathan , Mohsen Guizani

This paper characterizes the fundamental trade-off between throughput and Age of Information (AoI) in wireless networks where multiple devices transmit status updates to a central base station over unreliable channels. To address the…

Systems and Control · Electrical Eng. & Systems 2025-09-09 Lin Wang , I-Hong Hou

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

Age of information (AoI) is an effective measure to quantify the information freshness in wireless status update systems. It has been further validated that the peak AoI has the potential to capture the core characteristics of the aging…

Systems and Control · Electrical Eng. & Systems 2024-06-05 Yuquan Xiao , Qinghe Du , George K. Karagiannidis

The Age of Information (AoI) is a performance metric that quantifies the freshness of data in systems where timely updates are critical. Most state-of-the-art methods typically assume that packets enter the monitored system with zero age,…

Information Theory · Computer Science 2025-12-01 Fernando Miguelez , Urtzi Ayesta , Josu Doncel , Maria Dolores Ugarte

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 investigate the age-of-information (AoI) in the context of random access networks, in which transmitters need to send a sequence of information packets to intended receivers over shared spectrum. We establish an analytical framework that…

Information Theory · Computer Science 2020-09-22 Howard H. Yang , Ahmed Arafa , Tony Q. S. Quek , H. Vincent Poor

The Age of Information (AoI) is an end-to-end metric frequently used to understand how "fresh" the information about a remote system is. In this paper, we present an experimental study of the relationship between AoI and the energy spent by…

Networking and Internet Architecture · Computer Science 2024-05-10 Federico Cristofani , Valerio Luconi , Alessio Vecchio

Age of information (AoI), a metric to analyse data freshness, is of interest for time-critical applications in upcoming wireless networks. Besides, wireless power transfer (WPT) is also essential to prolong lifetime of a wireless sensor…

Information Theory · Computer Science 2020-07-15 Yasaman Khorsandmanesh , Mohammad Javad Emadi , Ioannis Krikidis

Age of Information (AoI) is a recently defined quantity, which measures the freshness of information in a communication scheme. In this paper, we analyze a network that consists of a sensor node, an energy source and a receiver. The energy…

Information Theory · Computer Science 2024-10-30 Navid Nouri , Darya Ardan , Mahmood Mohassel Feghhi

Age-of-Information (AoI) is an application layer metric that has been widely adopted to quantify the information freshness of each information source. However, few works address the impact of probabilistic transmission failures on…

Information Theory · Computer Science 2022-08-03 Ziyao Huang , Weiwei Wu , Chenchen Fu , Vincent Chau , Xiang Liu , Jianping Wang , Junzhou Luo

Age of Information (AoI) measures the freshness of data in mission critical Internet-of-Things (IoT) applications i.e., industrial internet, intelligent transportation systems etc. In this paper, a new system model is proposed to estimate…

Networking and Internet Architecture · Computer Science 2021-06-01 Chathuranga M. Wijerathna Basnayaka , Dushantha Nalin K. Jayakody , Tharindu D. Ponnimbaduge Perera , Moises Vidal Ribeiro

In this paper, we study a model relevant to semantics-aware goal-oriented communications. More specifically, observations from an external process are transmitted through status updates to a battery-powered receiver. From these updates, the…

Information Theory · Computer Science 2023-03-02 Ali Nikkhah , Anthony Ephremides , Nikolaos Pappas

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 technological landscape is rapidly evolving toward large-scale systems. Networks supporting massive connectivity through numerous Internet of Things (IoT) devices are at the forefront of this advancement. In this paper, we examine…

Information Theory · Computer Science 2024-12-06 Yao Zhu , Xiaopeng Yuan , Yulin Hu , Bo Ai , Ruikang Wang , Bin Han , Anke Schmeink

Flanking traditional metrics such as throughput and reliability, age of information (AoI) is emerging as a fundamental tool to capture the performance of IoT systems. In this context, we focus on a setup in which a large number of nodes…

Networking and Internet Architecture · Computer Science 2020-05-19 Andrea Munari , Alexey Frolov

Age of information (AoI) is gaining attention as a valuable performance metric for many IoT systems, in which a large number of devices report time-stamped updates to a central gateway. This is the case, for instance, of remote sensing,…

Networking and Internet Architecture · Computer Science 2021-02-16 Andrea Munari

In this letter, we deal with the age of information (AoI) for a sensor network with wireless power transfer (WPT) capabilities. Specifically, we study a simple network topology, where a sensor node harvests energy from radio frequency…

Signal Processing · Electrical Eng. & Systems 2018-12-19 Ioannis Krikidis

This paper estimates the freshness of the information in a wireless relay communication system that employs simultaneous wireless information and power transfer (SWIPT) operating under ultra-reliable low-latency communication (URLLC)…

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
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