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Age of Incorrect Information (AoII) is a newly introduced performance metric that considers communication goals. Therefore, comparing with traditional performance metrics and the recently introduced metric - Age of Information (AoI), AoII…

Information Theory · Computer Science 2025-12-19 Yutao Chen , Anthony Ephremides

As an evolving successor to the mobile Internet, the extended reality (XR) devices can generate a fully digital immersive environment similar to the real world, integrating integrating virtual and real-world elements. However, in addition…

Information Theory · Computer Science 2023-05-17 Jianrui Chen , Jingjing Wang , Chunxiao Jiang , Jiaxing Wang

The Age of Incorrect Information (AoII) is a recently proposed metric for real-time remote monitoring systems. In particular, AoII measures the time the information at the monitor is incorrect, weighted by the magnitude of this…

Information Theory · Computer Science 2024-12-05 Konstantinos Bountrogiannis , Anthony Ephremides , Panagiotis Tsakalides , George Tzagkarakis

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

In this paper, we introduce a new performance metric in the framework of status updates that we will refer to as the Age of Incorrect Information (AoII). This new metric deals with the shortcomings of both the Age of Information (AoI) and…

Information Theory · Computer Science 2020-07-10 Ali Maatouk , Saad Kriouile , Mohamad Assaad , Anthony Ephremides

This paper investigates the problem of minimizing the Age of Incorrect Information (AoII) when the communication channel has a random delay. We consider a slotted-time system where a transmitter observes a dynamic source and decides when to…

Information Theory · Computer Science 2023-01-19 Yutao Chen , Anthony Ephremides

We consider a slotted-time system with a transmitter-receiver pair. In the system, a transmitter observes a dynamic source and sends updates to a remote receiver through a communication channel. We assume that the channel is error-free but…

Information Theory · Computer Science 2023-01-19 Yutao Chen , Anthony Ephremides

This paper investigates the Age of Incorrect Information (AoII) in a communication system whose channel suffers a random delay. We consider a slotted-time system where a transmitter observes a dynamic source and decides when to send updates…

Information Theory · Computer Science 2025-12-19 Yutao Chen , Anthony Ephremides

Semantic communication is emerging as an effective means of facilitating intelligent and context-aware communication for next-generation communication systems. In this paper, we propose a novel metric called Age of Incorrect Semantics…

Information Theory · Computer Science 2025-08-21 Xue Han , Biqian Feng , Yongpeng Wu , Xiang-Gen Xia , Wenjun Zhang , Shengli Sun

We consider a transmitter-receiver pair in a slotted-time system. The transmitter observes a dynamic source and sends updates to a remote receiver through an error-free communication channel that suffers a random delay. We consider two…

Information Theory · Computer Science 2025-12-19 Yutao Chen , Anthony Ephremides

We study a goal-oriented communication system in which a source monitors an environment that evolves as a discrete-time, two-state Markov chain. At each time slot, a controller decides whether to sample the environment and if so whether to…

Information Theory · Computer Science 2025-08-12 Rishabh S. Pomaje , Jayanth S. , Rajshekhar V. Bhat , Nikolaos Pappas

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

Future wireless networks must support real-time, data-driven cyber-physical systems in which communication is tightly coupled with sensing, inference, control, and decision-making. Traditional communication paradigms centered on accuracy,…

Information Theory · Computer Science 2025-12-16 Jiping Luo , Erfan Delfani , Mehrdad Salimnejad , Nikolaos Pappas

Age of Incorrect Information (AoII) is particularly relevant in systems where real time responses to anomalies are required, such as natural disaster alerts, cybersecurity warnings, or medical emergency notifications. Keeping system control…

Networking and Internet Architecture · Computer Science 2024-11-14 Federico Chiariotti , Andrea Munari , Leonardo Badia , Petar Popovski

This work introduces a framework for analyzing the Age of Incorrect Information (AoII) in a real-time monitoring system with a generic discrete-time Markov source. We study a noisy communication system employing a hybrid automatic repeat…

Information Theory · Computer Science 2026-03-31 Konstantinos Bountrogiannis , Anthony Ephremides , Panagiotis Tsakalides , George Tzagkarakis

The Age of Incorrect Information (AoII) is a metric that can combine the freshness of the information available to a gateway in an Internet of Things (IoT) network with the accuracy of that information. As such, minimizing the AoII can…

Information Theory · Computer Science 2023-01-27 Anupam Nayak , Anders E. Kalør , Federico Chiariotti , Petar Popovski

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

The age of Information (AoI) has been introduced to capture the notion of freshness in real-time monitoring applications. However, this metric falls short in many scenarios, especially when quantifying the mismatch between the current and…

Information Theory · Computer Science 2023-09-06 Saad Kriouile , Mohamad Assaad

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
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