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The freshness of information in real-time monitoring systems has received increasing attention, with Age of Information (AoI) emerging as a novel metric for measuring information freshness. In many applications, update packets need to be…

Information Theory · Computer Science 2024-04-04 Jianhang Zhu , Jie Gong

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

Emerging applications, such as smart factories and fleets of drones, increasingly rely on sharing time-sensitive information for monitoring and control. In such application domains, it is essential to keep information fresh, as outdated…

Networking and Internet Architecture · Computer Science 2020-12-29 Igor Kadota , Muhammad Shahir Rahman , Eytan Modiano

With the development of IoT, the sensor usage has been elevated to a new level, and it becomes more crucial to maintain reliable sensor networks. In this paper, we provide how to efficiently and reliably manage the sensor monitoring system…

Systems and Control · Electrical Eng. & Systems 2021-03-15 Jinwoong Kim , Minsu Kim , Jemin Lee

Resource management in Internet of Things (IoT) systems is a major challenge due to the massive scale and heterogeneity of the IoT system. For instance, most IoT applications require timely delivery of collected information, which is a key…

Information Theory · Computer Science 2021-01-05 Taehyeun Park , Walid Saad , Bo Zhou

Optimization of information freshness in wireless networks has usually been performed based on queueing analysis that captures only the temporal traffic dynamics associated with the transmitters and receivers. However, the effect of…

Information Theory · Computer Science 2020-02-21 Howard H. Yang , Ahmed Arafa , Tony Q. S. Quek , H. Vincent Poor

A novel approach is presented in this work for context-aware connectivity and processing optimization of Internet of things (IoT) networks. Different from the state-of-the-art approaches, the proposed approach simultaneously selects the…

Signal Processing · Electrical Eng. & Systems 2020-05-04 Metin Ozturk , Attai Ibrahim Abubakar , Rao Naveed Bin Rais , Mona Jaber , Sajjad Hussain , Muhammad Ali Imran

Timeliness is an emerging requirement for many Internet of Things (IoT) applications. In IoT networks, where a large-number of nodes are distributed, severe interference may incur during the transmission phase which causes age of…

Information Theory · Computer Science 2021-02-24 Xinghua Sun , Fangming Zhao , Howard H. Yang , Wen Zhan , Xijun Wang , Tony Q. S. Quek

Age-of-information (AoI) is a novel metric that measures the freshness of information in status update scenarios. It is essential for real-time applications to transmit status update packets to the destination node as timely as possible.…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-01-15 Qiaobin Kuang , Jie Gong , Xiang Chen , Xiao Ma

The freshness of status information is of great importance for time-critical Internet of Things (IoT) applications. A metric measuring status freshness is the age-of-information (AoI), which captures the time elapsed from the status being…

Networking and Internet Architecture · Computer Science 2020-03-25 Rui Li , Qian Ma , Jie Gong , Zhi Zhou , Xu Chen

Motivated by the need to ensure timely delivery of information (e.g., status updates) in the Internet-of-things (IoT) paradigm, this paper investigates the role of an Unmanned aerial vehicle (UAV) as a mobile relay to minimize the average…

Information Theory · Computer Science 2018-12-24 Mohamed A. Abd-Elmagid , Harpreet S. Dhillon

We consider the multicast transmission of a real-time Internet of Things (IoT) system, where a server transmits time-stamped status updates to multiple IoT devices. We apply a recently proposed metric, named age of information (AoI), to…

Information Theory · Computer Science 2020-02-07 Jie Li , Yong Zhou , He Chen

In this work, we study the freshness and significance of information in an IoT status update system in which an Energy Harvesting (EH) device samples an information source and forwards update packets to a destination node via a direct…

Information Theory · Computer Science 2026-05-07 Erfan Delfani , Nikolaos Pappas

Collaborative perception is a cornerstone of intelligent connected vehicles, enabling them to share and integrate sensory data to enhance situational awareness. However, measuring the impact of high transmission delay and inconsistent delay…

Multiagent Systems · Computer Science 2025-02-13 Ziyong Wu , Zhilin Peng , Lei Yu

In compute-first networking, maintaining fresh and accurate status information at the network edge is crucial for effective access to remote services. This process typically involves three phases: Status updating, user accessing, and user…

Networking and Internet Architecture · Computer Science 2024-12-25 Haosheng He , Jianpeng Qi , Chao Liu , Junyu Dong , Yanwei Yu

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

Modern sensing and monitoring applications typically consist of sources transmitting updates of different sizes, ranging from a few bytes (position, temperature, etc.) to multiple megabytes (images, video frames, LIDAR point scans, etc.).…

Systems and Control · Electrical Eng. & Systems 2025-12-09 Zhuoyi Zhao , Vishrant Tripathi , Igor Kadota

We consider a communication cell comprised of Internet-of-Things (IoT) nodes transmitting to a common Access Point (AP). The nodes in the cell are assumed to generate data samples periodically, which are to be transmitted to the AP. The AP…

Signal Processing · Electrical Eng. & Systems 2020-12-02 Ivana Nikoloska , Josefine Holm , Anders Kalør , Petar Popovski , Nikola Zlatanov

Optimization of information freshness in wireless networks has usually been performed based on queueing analysis that captures only the temporal traffic dynamics associated with the transmitters and receivers. However, the effect of…

Information Theory · Computer Science 2019-07-24 Howard H. Yang , Ahmed Arafa , Tony Q. S. Quek , H. Vincent Poor

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