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The emerging field of artificial intelligence of things (AIoT, AI+IoT) is driven by the widespread use of intelligent infrastructures and the impressive success of deep learning (DL). With the deployment of DL on various intelligent…

Machine Learning · Computer Science 2023-09-28 Sicong Liu , Bin Guo , Cheng Fang , Ziqi Wang , Shiyan Luo , Zimu Zhou , Zhiwen Yu

In this paper, we consider the multicast transmission of a real-time Internet of Things (IoT) system, where an access point (AP) transmits time-stamped status updates to multiple IoT devices. Different from the existing studies that only…

Information Theory · Computer Science 2020-03-20 Jie Li , Yong Zhou , He Chen

Age of Information (AoI) has proven to be a useful metric in networked systems where timely information updates are of importance. In the literature, minimizing "average age" has received considerable attention. However, various…

Information Theory · Computer Science 2020-10-06 Jaya Prakash Champati , Hussein Al-Zubaidy , James Gross

As Internet of Things (IoT) systems scale and device heterogeneity grows, multimodal data have become ubiquitous. Meanwhile, evaluating the freshness of multimodal data is essential, as stale updates would delay task execution, degrade…

Networking and Internet Architecture · Computer Science 2026-02-17 Ying Liu , Yifan Zhang , Xinyu Wang , Chao Yang , Kandaraj Piamrat , Stephan Sigg , Zheng Changr , Yusheng Ji

Reconfigurable Intelligent Surface (RIS) is a pivotal technology in communication, offering an alternative path that significantly enhances the link quality in wireless communication environments. In this paper, we propose a RIS-assisted…

Machine Learning · Computer Science 2025-06-23 Kangwei Qi , Qiong Wu , Pingyi Fan , Nan Cheng , Wen Chen , Jiangzhou Wang , Khaled B. Letaief

The Age-of-Information (AoI) is a new performance metric recently proposed for measuring the freshness of information in information-update systems. In this work, we conduct a systematic and comparative study to investigate the impact of…

Information Theory · Computer Science 2020-10-07 Zhongdong Liu , Liang Huang , Bin Li , Bo Ji

Internet of Things (IoT) is considered as the enabling platform for a variety of promising applications, such as smart transportation and smart city, where massive devices are interconnected for data collection and processing. These IoT…

Networking and Internet Architecture · Computer Science 2021-03-22 Laha Ale , Ning Zhang , Xiaojie Fang , Xianfu Chen , Shaohua Wu , Longzhuang Li

In this paper, we study how to collect fresh data in time-varying networks with power constrained users. We measure data freshness from the perspective of the central controller by using the metric Age of Information, namely the time…

Information Theory · Computer Science 2019-11-27 Haoyue Tang , Jintao Wang , Linqi Song , Jian Song

Age of Information (AoI) is a newly appeared concept and metric to characterize the freshness of data. In this work, we study the delay and AoI in a multiple access channel (MAC) with two source nodes transmitting different types of data to…

Information Theory · Computer Science 2019-03-13 Zheng Chen , Nikolaos Pappas , Emil Björnson , Erik G. Larsson

Existing network paradigms have achieved lower downtime as well as a higher Quality of Experience (QoE) through the use of Artificial Intelligence (AI)-based network management tools. These AI management systems, allow for automatic…

Artificial Intelligence · Computer Science 2025-02-11 Emanuel Figetakis , Ahmed Refaey Hussein

In recent years, unmanned aerial vehicles (UAVs) have found numerous sensing applications, which are expected to add billions of dollars to the world economy in the next decade. To further improve the Quality-of-Service (QoS) in such…

Systems and Control · Electrical Eng. & Systems 2020-03-13 Fanyi Wu , Hongliang Zhang , Jianjun Wu , Lingyang Song , Zhu Han , H. Vincent Poor

Recent developments in cyber-physical systems have increased the importance of maximizing the freshness of the information about the physical environment. However, optimizing the access policies of Internet of Things devices to maximize the…

Networking and Internet Architecture · Computer Science 2025-12-16 José-Ramón Vidal , Vicent Pla , Luis Guijarro , Israel Leyva-Mayorga

The Age-of-Information is an important metric for investigating the timeliness performance in information-update systems. In this paper, we study the AoI minimization problem under a new Pull model with replication schemes, where a user…

Networking and Internet Architecture · Computer Science 2022-05-30 Fengjiao Li , Yu Sang , Zhongdong Liu , Bin Li , Huasen Wu , Bo Ji

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

We consider a network with multiple sources and a base station that send time-sensitive information to remote clients. The Age of Incorrect Information (AoII) captures the freshness of the informative pieces of status update packets at the…

Information Theory · Computer Science 2023-05-02 Muratcan Ayik , Elif Tugce Ceran , Elif Uysal

In this paper, we investigate the age-of-information (AoI) of a power domain non-orthogonal multiple access (NOMA) network, where multiple internet-of-things (IoT) devices transmit to a common gateway in a grant-free random fashion. More…

Signal Processing · Electrical Eng. & Systems 2025-02-10 Felippe Moraes Pereira , Jamil de Araujo Farhat , João Luiz Rebelatto , Glauber Brante , Richard Demo Souza

We consider a discrete-time multi-channel network where the destination collects time-sensitive packets from multiple sources with sided channel information. The popular metric, Age of Information (AoI), is applied to measure the data…

Information Theory · Computer Science 2022-12-15 Yuchao Chen , Jintao Wang , Xiaoqing Wang , Jian Song

It is becoming increasingly clear that an important task for wireless networks is to minimize the age of information (AoI), i.e., the timeliness of information delivery. While mainstream approaches generally rely on the real-time…

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

Age of Information (AoI) has been recognized as an important metric to measure the freshness of information. Central to this consensus is that minimizing AoI can enhance the freshness of information, thereby facilitating the accuracy of…

Information Theory · Computer Science 2024-08-09 Aimin Li , Shaohua Wu , Gary C. F. Lee , Xiaomeng Cheng , Sumei Sun

In this paper, we consider a multiuser uplink status update system, where a monitor aims to timely collect randomly generated status updates from multiple end nodes through a shared wireless channel. We adopt the recently proposed metric,…

Information Theory · Computer Science 2020-06-01 Aoyu Gong , Tong Zhang , He Chen , Yijin Zhang