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We consider the age of information in a multihop multicast network where there is a single source node sending time-sensitive updates to $n^L$ end nodes, and $L$ denotes the number of hops. In the first hop, the source node sends updates to…

Information Theory · Computer Science 2018-12-27 Baturalp Buyukates , Alkan Soysal , Sennur Ulukus

Driven by the interplay among artificial intelligence, digital twin, and wireless networks, 6G is envisaged to go beyond data-centric services to provide intelligent and immersive experiences. To efficiently support intelligent tasks with…

Information Theory · Computer Science 2023-03-24 Yuanming Shi , Yong Zhou , Dingzhu Wen , Youlong Wu , Chunxiao Jiang , Khaled B. Letaief

In many emerging Internet of Things (IoT) applications, the freshness of the is an important design criterion. Age of Information (AoI) quantifies the freshness of the received information or status update. This work considers a setup of…

Signal Processing · Electrical Eng. & Systems 2023-01-10 Eslam Eldeeb , Jean Michel de Souza Sant'Ana , Dian Echevarría Pérez , Mohammad Shehab , Nurul Huda Mahmood , Hirley Alves

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), defined as the time elapsed since the generation of the latest received update, is a promising performance metric to measure data freshness for real-time status monitoring. In many applications, status information…

Information Theory · Computer Science 2020-02-25 Jie Gong , Qiaobin Kuang , Xiang Chen

In this paper, we consider a point-to-point wireless communication system. The source monitors a physical process and generates status update packets according to a Poisson process. The packets are transmitted to the destination by using…

Signal Processing · Electrical Eng. & Systems 2019-08-20 Rui Wang , Yifan Gu , He Chen , Yonghui Li , Branka Vucetic

We study age of information in multi-hop multi-cast cache-enabled networks where the inter-update times on the links are not necessarily exponentially distributed. We focus on the set of non-arithmetic distributions for inter-update times,…

Information Theory · Computer Science 2023-02-01 Priyanka Kaswan , Sennur Ulukus

In this work, we consider a status update system with a sensor and a receiver. The status update information is sampled by the sensor and then forwarded to the receiver through a channel with non-stationary delay distribution. The data…

Networking and Internet Architecture · Computer Science 2023-11-01 Jinheng Zhang , Haoyue Tang , Jintao Wang , Sastry Kompella , Leandros Tassiulas

The freshness of status updates is imperative in mission-critical Internet of things (IoT) applications. Recently, Age of Information (AoI) has been proposed to measure the freshness of updates at the receiver. However, AoI only…

Information Theory · Computer Science 2020-03-03 Wenrui Lin , Xijun Wang , Chao Xu , Xinghua Sun , Xiang Chen

When a channel model is available, learning how to communicate on fading noisy channels can be formulated as the (unsupervised) training of an autoencoder consisting of the cascade of encoder, channel, and decoder. An important limitation…

Signal Processing · Electrical Eng. & Systems 2021-10-22 Sangwoo Park , Osvaldo Simeone , Joonhyuk Kang

The autoencoder concept has fostered the reinterpretation and the design of modern communication systems. It consists of an encoder, a channel, and a decoder block which modify their internal neural structure in an end-to-end learning…

Information Theory · Computer Science 2020-09-14 Nunzio A. Letizia , Andrea M. Tonello

Machine learning has shown promising results for communications system problems. We present results on the use of deep auto-encoders in order to learn a transceiver for the multiuser degraded broadcast channel, and see that the auto encoder…

Information Theory · Computer Science 2019-03-21 Erik Stauffer , Andy Wang , Nihar Jindal

We investigate the age-of-information (AoI) in the context of random access networks, in which transmitters need to send a sequence of information packets to intended receivers over shared spectrum. We establish an analytical framework that…

Information Theory · Computer Science 2020-09-22 Howard H. Yang , Ahmed Arafa , Tony Q. S. Quek , H. Vincent Poor

Recent research in the design of end to end communication system using deep learning has produced models which can outperform traditional communication schemes. Most of these architectures leveraged autoencoders to design the encoder at the…

Information Theory · Computer Science 2020-01-28 Vishnu Raj , Sheetal Kalyani

This paper contributes tail bounds of the age-of-information of a general class of parallel systems and explores their potential. Parallel systems arise in relevant cases, such as in multi-band mobile networks, multi-technology wireless…

Information Theory · Computer Science 2023-03-27 Markus Fidler , Jaya Champati , Joerg Widmer , Mahsa Noroozi

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

Most existing neural network based task-oriented dialogue systems follow encoder-decoder paradigm, where the decoder purely depends on the source texts to generate a sequence of words, usually suffering from instability and poor…

Computation and Language · Computer Science 2021-06-11 Dingmin Wang , Ziyao Chen , Wanwei He , Li Zhong , Yunzhe Tao , Min Yang

Internet of Things (IoT) has emerged as one of the key features of the next generation wireless networks, where timely delivery of status update packets is essential for many real-time IoT applications. To provide users with context-aware…

Information Theory · Computer Science 2019-10-15 Chao Xu , Howard H. Yang , Xijun Wang , Tony Q. S. Quek

In this paper, we consider a multiuser uplink status update system, where a monitor aims to timely collect randomly generated status updates from multiple end nodes through a shared wireless channel. We adopt the recently proposed metric,…

Information Theory · Computer Science 2020-06-01 Aoyu Gong , Tong Zhang , He Chen , Yijin Zhang

Many emerging Internet of Things (IoT) applications rely on information collected by sensor nodes where the freshness of information is an important criterion. \textit{Age of Information} (AoI) is a metric that quantifies information…