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To address the high mobility impacts and the ultra-reliable and low-latency communication (URLLC) requirements in autonomous driving scenarios, rate-splitting multiple access (RSMA) combined with short-packet communication (SPC) emerges as…

Information Theory · Computer Science 2026-04-16 Zirui Zheng , Yingyang Chen , Xinyue Pei , Xingwei Wang , Zhiquan Liu , Theodoros A. Tsiftsis , Miaowen Wen , Pingzhi Fan

We study the joint optimization of timeliness and reliability in semantics-aware Wireless Networked Control Systems (WNCS) under computation resource constraints. The sampled data are categorized into regular and critical tasks based on the…

Networking and Internet Architecture · Computer Science 2026-05-12 Fangming Zhao , Nikolaos Pappas , Howard H. Yang

This letter provides query-age-optimal joint sampling and transmission scheduling policies for a heterogeneous status update system, consisting of a stochastic arrival and a generate-at-will source, with an unreliable channel. Our main goal…

Signal Processing · Electrical Eng. & Systems 2023-02-20 Abolfazl Zakeri , Mohammad Moltafet , Markus Leinonen , Marian Codreanu

In this paper, we examine a multi-sensor system where each sensor monitors multiple dynamic information processes and transmits updates over a shared communication channel. These updates may include correlated information across the various…

Information Theory · Computer Science 2025-02-13 Egemen Erbayat , Ali Maatouk , Peng Zou , Suresh Subramaniam

Age of information (AoI) is an effective performance metric measuring the freshness of information and is particularly suitable for applications involving status update. In this paper, using the age violation probability as the metric,…

Information Theory · Computer Science 2023-08-11 Kuan-Yu Lin , Yu-Chih Huang , Yu-Pin Hsu

Task-oriented communication is a new paradigm that aims at providing efficient connectivity for accomplishing intelligent tasks rather than the reception of every transmitted bit. In this paper, a deep learning-based task-oriented…

Signal Processing · Electrical Eng. & Systems 2022-04-20 Chuanhong Liu , Caili Guo , Yang Yang , Nan Jiang

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…

Signal Processing · Electrical Eng. & Systems 2022-10-05 Wanting Lyu , Yue Xiu , Jun Zhao , Zhongpei Zhang

This study considers a wireless network where multiple nodes transmit status updates to a base station (BS) via a shared, error-free channel with limited bandwidth. The status updates arrive at each node randomly. We use the Age of…

Information Theory · Computer Science 2025-03-14 Yuqiao He , Yuchao Chen , Jintao Wang , Jian Song

We examine multiple independent sources providing status updates to a monitor through simple queues. We formulate an Age of Information (AoI) timeliness metric and derive a general result for the AoI that is applicable to a wide variety of…

Information Theory · Computer Science 2017-12-13 Roy D. Yates , Sanjit K. Kaul

We propose a frame slotted ALOHA (FSA)-based protocol for a random access network where sources transmit status updates to their intended destinations. We evaluate the effect of such a protocol on the network's timeliness performance using…

Information Theory · Computer Science 2023-03-08 Zhiling Yue , Howard H. Yang , Meng Zhang , Nikolaos Pappas

Scheduling updates from remote sensors is a key task for the internet of things (IoT). In this context, the mathematical concept of age of information is often used to capture the freshness of received data. This is, in turn, relevant to…

Information Theory · Computer Science 2022-08-31 Andrea Munari , Leonardo Badia

Popular methods to quantify transmitted data quality are the Age of Information (AoI), the Query Age of Information (QAoI), and the Age of Incorrect Information (AoII). We consider these metrics in a point-to-point wireless communication…

Information Theory · Computer Science 2025-03-18 Wanja de Sombre , Andrea Ortiz , Frank Aurzada , Anja Klein

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

Ensuring timely and semantically accurate information delivery is critical in real-time wireless systems. While Age of Information (AoI) quantifies temporal freshness, Version Age of Information (VAoI) captures semantic staleness by…

Networking and Internet Architecture · Computer Science 2026-01-27 Haoyuan Pan , Sizhao Chen , Zhaorui Wang , Tse-Tin Chan

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

Age of information (AoI) is gaining attention as a valuable performance metric for many IoT systems, in which a large number of devices report time-stamped updates to a central gateway. This is the case, for instance, of remote sensing,…

Networking and Internet Architecture · Computer Science 2021-02-16 Andrea Munari

In a communication setting where multiple sources share a single channel to provide status updates to a remote monitor, source transmissions need to be scheduled appropriately to maintain timely communication between each of the sources and…

Information Theory · Computer Science 2024-01-24 Sahan Liyanaarachchi , Sennur Ulukus , Nail Akar

Semantic communication, recognized as a promising technology for future intelligent applications, has received widespread research attention. Despite the potential of semantic communication to enhance transmission reliability, especially in…

Information Theory · Computer Science 2023-12-05 Lingyi Wang , Wei Wu , Fuhui Zhou , Zhaohui Yang , Zhijin Qin

Age of Information (AoI) measures the freshness of the information at a remote location. AoI reflects the time that is elapsed since the generation of the packet by a transmitter. In this paper, we consider a remote monitoring problem…

Networking and Internet Architecture · Computer Science 2019-05-14 Anis Elgabli , Hamza Khan , Mounssif Krouka , Mehdi Bennis

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