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A new timeliness metric, called Age-of-Information (AoI), has recently attracted a lot of research interests for real-time applications with information updates. It has been extensively studied for various queueing models based on the…

信息论 · 计算机科学 2023-02-17 Zhongdong Liu , Yu Sang , Bin Li , Bo Ji

In this paper, we consider a scenario where an energy harvesting sensor continuously monitors a system and sends time-stamped status updates to a destination. The destination keeps track of the system status through the received updates. We…

信息论 · 计算机科学 2018-06-07 Xianwen Wu , Jing Yang , Jingxian Wu

In recent years, optimization of the success transmission probability in wireless cache-enabled networks has been studied extensively. However, few works have concerned about the real-time performance of the cache-enabled networks. In this…

信息论 · 计算机科学 2019-12-30 Le Yang , Yi Zhong , Fu-Chun Zheng , Shi Jin

In this paper, we introduce the Age of Incorrect Information (AoII) as an enabler for semantics-empowered communication, a newly advocated communication paradigm centered around data's role and its usefulness to the communication's goal.…

信息论 · 计算机科学 2022-10-12 Ali Maatouk , Mohamad Assaad , Anthony Ephremides

We consider the version age of information (AoI) in a network where a subset of nodes act as sensing nodes, sampling a source that in general can follow a continuous distribution. Any sample of the source constitutes a new version of the…

信息论 · 计算机科学 2024-09-25 Kian J. Khojastepour , Matin Mortaheb , Sennur Ulukus

Age-of-Information (AoI) is a recently introduced metric for network operation with sensor applications which quantifies the freshness of data. In the context of networked control systems (NCSs), we compare the worth of the AoI metric with…

信息论 · 计算机科学 2019-03-14 Onur Ayan , Mikhail Vilgelm , Markus Klügel , Sandra Hirche , Wolfgang Kellerer

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…

多智能体系统 · 计算机科学 2023-12-21 Anam Tahir , Kai Cui , Bastian Alt , Amr Rizk , Heinz Koeppl

This paper investigates information freshness of multichannel access in information update systems. Age of information (AoI) is a fundamentally important metric to characterize information freshness, defined as the time elapsed since the…

网络与互联网体系结构 · 计算机科学 2021-06-02 Jiaxin Liang , Haoyuan Pan , Soung Chang Liew

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…

信息论 · 计算机科学 2020-03-20 Jie Li , Yong Zhou , He Chen

Status update systems consist of sensors that take measurements of a physical parameter and transmit them to a remote receiver. Age of Information (AoI) has been studied extensively as a metric for the freshness of information in such…

信息论 · 计算机科学 2021-10-12 Peng Zou , Jin Zhang , Xianglin Wei , Suresh Subramaniam

In this paper, we study the moments of the Age of Information (AoI) for both active and passive users in a random access network. In this network, active users broadcast sensing data, while passive users detect in-band radio activities from…

网络与互联网体系结构 · 计算机科学 2024-06-04 Siqi Fan , Yuxin Zhong , I-Hong Hou , Clement K Kam

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…

计算机与社会 · 计算机科学 2025-05-06 Aymen Hamrouni , Sofie Pollin , Hazem Sallouha

This paper estimates the freshness of the information in a wireless relay communication system that employs simultaneous wireless information and power transfer (SWIPT) operating under ultra-reliable low-latency communication (URLLC)…

In this paper, we analyze the non-linear age of information (AoI) performance in a point-to-point short packet communication system, where a transmitter generates packets based on status updates and transmits the packets to a receiver.…

信息论 · 计算机科学 2022-10-31 Zhifeng Tang , Nan Yang , Xiangyun Zhou , Jemin Lee

In this letter, a reconfigurable intelligent surface (RIS)-assisted simultaneous wireless information and power transfer (SWIPT) network is investigated. To quantify the freshness of the data packets at the information receiver, the age of…

信号处理 · 电气工程与系统科学 2022-10-05 Wanting Lyu , Yue Xiu , Jun Zhao , Zhongpei Zhang

In this paper, we examine the potentials of Non- Orthogonal Multiple Access (NOMA), currently rivaling Orthogonal Multiple Access (OMA) in 3rd Generation Partnership Project (3GPP) standardization for future 5G networks Machine Type…

信息论 · 计算机科学 2020-01-07 Ali Maatouk , Mohamad Assaad , Anthony Ephremides

We consider the scenario where a sender periodically sends a batch of data to a receiver over a multi-hop network, possibly using multiple paths. Our objective is to minimize peak/average Age-of-Information (AoI) subject to throughput…

网络与互联网体系结构 · 计算机科学 2019-05-20 Qingyu Liu , Haibo Zeng , Minghua Chen

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…

网络与互联网体系结构 · 计算机科学 2022-02-02 Federico Chiariotti , Josefine Holm , Anders E. Kalør , Beatriz Soret , Søren K. Jensen , Torben B. Pedersen , Petar Popovski

Enabling real-time communication in Industrial Internet of Things (IIoT) networks is crucial to support autonomous, self-organized and re-configurable industrial automation for Industry 4.0 and the forthcoming Industry 5.0. In this paper,…

网络与互联网体系结构 · 计算机科学 2023-11-23 Hossam Farag , Dejan Vukobratovic , Andrea Munari , Cedomir Stefanovic

Age-of-Information (AoI) is a recently proposed metric for quantifying the freshness of information from the UE's perspective in a communication network. Recently, Kadota et al. [1] have proposed an index-type approximately optimal…

信息论 · 计算机科学 2019-04-02 Arunabh Srivastava , Abhishek Sinha , Krishna Jagannathan