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Age-of-information (AoI) is a metric quantifying information freshness at the receiver. Since AoI combines packet generation frequency, packet loss, and delay into a single metric, it has received a lot of research attention as an interface…

Information Theory · Computer Science 2019-11-25 Onur Ayan , Mikhail Vilgelm , Wolfgang Kellerer

The age of information (AoI) performance analysis is essential for evaluating the information freshness in the large-scale mobile edge computing (MEC) networks. This work proposes the earliest analysis of the mean AoI (MAoI) performance of…

Systems and Control · Electrical Eng. & Systems 2024-09-25 Ying Dong , Hang Xiao , Haonan Hu , Jiliang Zhang , Qianbin Chen , Jie Zhang

We summarize recent contributions in the broad area of age of information (AoI). In particular, we describe the current state of the art in the design and optimization of low-latency cyberphysical systems and applications in which sources…

Information Theory · Computer Science 2020-07-20 Roy D. Yates , Yin Sun , D. Richard Brown , Sanjit K. Kaul , Eytan Modiano , Sennur Ulukus

Age of Information (AoI), namely the time that has elapsed since the most recently delivered packet was generated, is receiving increasing attention with the emergence of many real-time applications that rely on the exchange of…

Information Theory · Computer Science 2024-05-08 Xinlu Dai , Cyril Leung

In a typical Internet of Things (IoT) application where a central controller collects status updates from multiple terminals, e.g., sensors and monitors, through a wireless multiaccess uplink, an important problem is how to attain timely…

Information Theory · Computer Science 2018-01-15 Zhiyuan Jiang , Bhaskar Krishnamachari , Xi Zheng , Sheng Zhou , Zhisheng Niu

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

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

Timely status updating is crucial for future applications that involve remote monitoring and control, such as autonomous driving and Industrial Internet of Things (IIoT). Age of Information (AoI) has been proposed to measure the freshness…

Information Theory · Computer Science 2020-01-29 Xi Zheng , Sheng Zhou , Zhisheng Niu

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

Age of information (AoI) is a recently proposed metric that measures the time elapsed since the generation of the last received information update. We consider the problem of AoI minimization for a network under general interference…

Networking and Internet Architecture · Computer Science 2018-05-18 Rajat Talak , Igor Kadota , Sertac Karaman , Eytan Modiano

Age of Information (AoI), measures the time elapsed since the last received information packet was generated at the source. We consider the problem of AoI minimization for single-hop flows in a wireless network, under pairwise interference…

Information Theory · Computer Science 2018-03-20 Rajat Talak , Sertac Karaman , Eytan Modiano

Intelligent real-time applications, such as video surveillance, demand intensive computation to extract status information from raw sensing data. This poses a substantial challenge in orchestrating computation and communication resources to…

Networking and Internet Architecture · Computer Science 2023-10-31 Jingzhou Sun , Lehan Wang , Zhaojun Nan , Yuxuan Sun , Sheng Zhou , Zhisheng Niu

In Internet of Things (IoT), the freshness of status updates is crucial for mission-critical applications. In this regard, it is suggested to quantify the freshness of updates by using Age of Information (AoI) from the receiver's…

Information Theory · Computer Science 2021-10-05 Xijun Wang , Wenrui Lin , Chao Xu , Xinghua Sun , Xiang Chen

IoT devices recently are utilized to detect the state transition in the surrounding environment and then transmit the status updates to the base station for future system operations. To satisfy the stringent timeliness requirement of the…

Networking and Internet Architecture · Computer Science 2022-11-01 Yi Chen , Zheng Chang , Geyong Min , Shiwen Mao , Timo Hämäläinen

To support emerging real-time monitoring and control applications, the timeliness of computation results is of critical importance to mobile-edge computing (MEC) systems. We propose a performance metric called age of task (AoT) based on the…

Signal Processing · Electrical Eng. & Systems 2019-05-29 Xianxin Song , Xiaoqi Qin , Yunzheng Tao , Baoling Liu , Ping Zhang

Age of information (AoI) is a powerful metric to evaluate the freshness of information, where minimization of average statistics, such as the average AoI and average peak AoI, currently prevails in guiding freshness optimization for related…

Information Theory · Computer Science 2023-11-29 Yuquan Xiao , Qinghe Du

Consider a network where a wireless base station (BS) connects multiple source-destination pairs. Packets from each source are generated according to a renewal process and are enqueued in a single-packet queue that stores only the freshest…

Networking and Internet Architecture · Computer Science 2025-01-14 Zhuoyi Zhao , Igor Kadota

We consider a wireless broadcast network with a base station sending time-sensitive information to a number of clients through unreliable channels. The Age of Information (AoI), namely the amount of time that elapsed since the most recently…

Networking and Internet Architecture · Computer Science 2018-01-08 Igor Kadota , Abhishek Sinha , Elif Uysal-Biyikoglu , Rahul Singh , Eytan Modiano

A large body of applications that involve monitoring, decision making, and forecasting require timely status updates for their efficient operation. Age of Information (AoI) is a newly proposed metric that effectively captures this…

Information Theory · Computer Science 2018-10-09 George Stamatakis , Nikolaos Pappas , Apostolos Traganitis

In an Internet-of-Things system where status data are collected from sensors and actuators for time-critical applications, the freshness of data is vital and can be quantified by the recently proposed age-of-information (AoI) metric. In…

Information Theory · Computer Science 2018-03-23 Zhiyuan Jiang , Bhaskar Krishnamachari , Sheng Zhou , Zhisheng Niu