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Using environmental sensory data can enhance communications beam training and reduce its overhead compared to conventional methods. However, the availability of fresh sensory data during inference may be limited due to sensing constraints…

信号处理 · 电气工程与系统科学 2025-11-04 Abolfazl Zakeri , Nhan Thanh Nguyen , Ahmed Alkhateeb , Markku Juntti

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

Timely status updates are crucial to enabling applications in massive Internet of Things (IoT). This paper measures the data-freshness performance of a status update system with an energy harvesting transmitter, considering the randomness…

信息论 · 计算机科学 2019-06-04 Xi Zheng , Sheng Zhou , Zhiyuan Jiang , Zhisheng Niu

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…

信息论 · 计算机科学 2025-02-13 Egemen Erbayat , Ali Maatouk , Peng Zou , Suresh Subramaniam

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…

信息论 · 计算机科学 2025-03-14 Yuqiao He , Yuchao Chen , Jintao Wang , Jian Song

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

We focus on the Age of Information (AoI) performance in a system where each user generates packets periodically to send to a common access point (AP) for status updating. To avoid heavy overhead, we assume that channel sensing, feedback…

信息论 · 计算机科学 2024-11-15 Fang Liu , Wing Shing Wong , Yuan-Hsun Lo , Yijin Zhang , Chung Shue Chen

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…

信息论 · 计算机科学 2023-05-17 Jianrui Chen , Jingjing Wang , Chunxiao Jiang , Jiaxing Wang

Timeliness is an emerging requirement for many Internet of Things (IoT) applications. In IoT networks, where a large-number of nodes are distributed, severe interference may incur during the transmission phase which causes age of…

信息论 · 计算机科学 2021-02-24 Xinghua Sun , Fangming Zhao , Howard H. Yang , Wen Zhan , Xijun Wang , Tony Q. S. Quek

The emergence of new intelligent applications has fostered the development of a task-oriented communication paradigm, where a comprehensive, universal, and practical metric is crucial for unleashing the potential of this paradigm. To this…

信息论 · 计算机科学 2025-08-21 Shuying Gan , Xijun Wang , Chao Xu , Xiang Chen

Supporting massive device transmission is challenging in Machine-to-Machine (M2M) communications. Particularly, in event-driven M2M communications, a large number of devices activate within a short period of time, which in turn causes high…

信息论 · 计算机科学 2012-08-16 Huasen Wu , Chenxi Zhu , Richard J. La , Xin Liu , Youguang Zhang

This paper investigates the average age of information (AoI) minimization in status update systems in which the update packets are transmitted with fixed rate. It is assumed that the source avoids queue-induced delay by generating and…

信息论 · 计算机科学 2019-08-19 Deli Qiao , M. Cenk Gursoy

This paper studies the problem of federated training of a deep neural network (DNN) over a random access channel (RACH) such as in computer networks, wireless networks, and cellular systems. More precisely, a set of remote users participate…

机器学习 · 计算机科学 2024-10-17 Yu Heng Wu , Houman Asgari , Stefano Rini , Andrea Munari

Applications like environmental sensing, and health and activity sensing, are supported by networks of devices (nodes) that send periodic packet transmissions over the wireless channel to a sink node. We look at simple abstractions that…

信息论 · 计算机科学 2017-05-10 Sanjit K. Kaul , Roy D. Yates

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…

信息论 · 计算机科学 2021-11-30 Bin Han , Yao Zhu , Zhiyuan Jiang , Muxia Sun , Hans D. Schotten

In this paper, we introduce two metrics, namely, age of actuation (AoA) and age of actuated information (AoAI), within a discrete-time system model that integrates data caching and energy harvesting (EH). AoA evaluates the timeliness of…

信息论 · 计算机科学 2024-01-31 Ali Nikkhah , Anthony Ephremides , Nikolaos Pappas

In this paper, we analyze the average age of information (AoI) and the average peak AoI (PAoI) of a multiuser mobile edge computing (MEC) system where a base station (BS) generates and transmits computation-intensive packets to user…

信息论 · 计算机科学 2022-11-03 Zhifeng Tang , Zhuo Sun , Nan Yang , Xiangyun Zhou

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…

信息论 · 计算机科学 2018-03-20 Rajat Talak , Sertac Karaman , Eytan Modiano

We study the probability distribution of age of information (AoI) in arbitrary networks with memoryless service times. A source node generates packets following a Poisson process, and then the packets are forwarded across the network in…

信息论 · 计算机科学 2022-02-04 Rajai Nasser , Ibrahim Issa , Ibrahim Abou-Faycal

The latest WiFi standard, IEEE 802.11ax (WiFi 6), introduces a novel uplink random access mechanism called uplink orthogonal frequency division multiple access-based random access (UORA). While existing work has evaluated the performance of…

信息论 · 计算机科学 2025-04-29 Jingwei Liu , Qian Wang , He Chen