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To achieve truly seamless global intelligent connectivity, non-terrestrial networks (NTN) mainly composed of low earth orbit (LEO) satellites and drones are recognized as important components of the future 6G network architecture.…

Social and Information Networks · Computer Science 2024-09-02 Zheng Guo , Qian Chen , Weixiao Meng

Efficient and dynamic path planning has become an important topic for urban areas with larger density of connected vehicles (CV) which results in reduction of travel time and directly contributes to environmental sustainability through…

Signal Processing · Electrical Eng. & Systems 2024-05-15 S. Norouzi , N. Azarasa , M. R. Abedi , N. Mokari , S. E. Seyedabrishami , H. Saeedi , E. A. Jorswieck

In this article, we provide an accessible introduction to the emerging idea of Age of Information (AoI) that quantifies freshness of information and explore its possible role in the efficient design of freshness-aware Internet of Things…

Information Theory · Computer Science 2019-12-10 Mohamed A. Abd-Elmagid , Nikolaos Pappas , Harpreet S. Dhillon

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

In this work, we investigate information freshness in a status update communication system consisting of a source-destination link. Initially, we study the properties of a sample path of the age of information (AoI) process at the…

Networking and Internet Architecture · Computer Science 2020-12-22 Antzela Kosta , Nikolaos Pappas , Anthony Ephremides , Vangelis Angelakis

Information freshness, characterized by age of information (AoI), is important for sensor applications involving timely status updates. In many cases, the wireless signals from one sensor can be received by multiple access points (APs).…

Networking and Internet Architecture · Computer Science 2022-09-14 Haoyuan Pan , Yu Zhou , Tse-Tin Chan , Ming Tang , Jianqiang Li , Zhihua Du

Internet of Things (IoT) has emerged as one of the key features of the next generation wireless networks, where timely delivery of status update packets is essential for many real-time IoT applications. To provide users with context-aware…

Information Theory · Computer Science 2019-10-15 Chao Xu , Howard H. Yang , Xijun Wang , Tony Q. S. Quek

This paper is motivated by emerging edge computing systems which consist of sensor nodes that acquire and process information and then transmit status updates to an edge receiver for possible further processing. As power is a scarce…

Information Theory · Computer Science 2020-03-31 Parisa Rafiee , Peng Zou , Omur Ozel , Suresh Subramaniam

We investigate the problem of co-designing computation and communication in a multi-agent system (e.g. a sensor network or a multi-robot team). We consider the realistic setting where each agent acquires sensor data and is capable of local…

Networking and Internet Architecture · Computer Science 2025-02-11 Vishrant Tripathi , Luca Ballotta , Luca Carlone , Eytan Modiano

In the Internet of Vehicles (IoV), Age of Information (AoI) has become a vital performance metric for evaluating the freshness of information in communication systems. Although many studies aim to minimize the average AoI of the system…

Information Theory · Computer Science 2025-06-23 Cui Zhang , Maoxin Ji , Qiong Wu , Pingyi Fan , Qiang Fan

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

Connected vehicular network is one of the key enablers for next generation cloud/fog-supported autonomous driving vehicles. Most connected vehicular applications require frequent status updates and Age of Information (AoI) is a more…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-04-10 Maohong Chen , Yong Xiao , Qiang Li , Kwang-cheng Chen

In this letter, an age of information (AoI)-aware transmission power and resource block (RB) allocation technique for vehicular communication networks is proposed. Due to the highly dynamic nature of vehicular networks, gaining a prior…

Networking and Internet Architecture · Computer Science 2019-12-18 Mohamed K. Abdel-Aziz , Sumudu Samarakoon , Mehdi Bennis , Walid Saad

Timely message delivery is a key enabler for Internet of Things (IoT) and cyber-physical systems to support wide range of context-dependent applications. Conventional time-related metrics (e.g. delay and jitter) fails to characterize the…

Information Theory · Computer Science 2019-12-18 Mustafa Emara , Hesham ElSawy , Gerhard Bauch

The significance of the freshness of sensor and control data at the receiver side, often referred to as Age of Information (AoI), is fundamentally constrained by contention for limited network resources. Evidently, network congestion is…

Multiagent Systems · Computer Science 2023-12-21 Anam Tahir , Kai Cui , Bastian Alt , Amr Rizk , Heinz Koeppl

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

Vehicle-to-Vehicle (V2V) communication networks enable safety applications via periodic broadcast of Basic Safety Messages (BSMs) or \textit{safety beacons}. Beacons include time-critical information such as sender vehicle's location, speed…

Networking and Internet Architecture · Computer Science 2020-05-28 Biplav Choudhury , Vijay K Shah , Avik Dayal , Jeffrey H. Reed

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

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

With the surge in IoT devices ranging from wearables to smart homes, prompt transmission is crucial. The Age of Information (AoI) emerges as a critical metric in this context, representing the freshness of the information transmitted across…

Computers and Society · Computer Science 2025-05-06 Aymen Hamrouni , Sofie Pollin , Hazem Sallouha