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This paper is motivated by emerging edge computing applications in which generated data are pre-processed at the source and then transmitted to an edge server. In such a scenario, there is typically a tradeoff between the amount of…

Information Theory · Computer Science 2019-07-02 Peng Zou , Omur Ozel , Suresh Subramaniam

The freshness of information in real-time monitoring systems has received increasing attention, with Age of Information (AoI) emerging as a novel metric for measuring information freshness. In many applications, update packets need to be…

Information Theory · Computer Science 2024-04-04 Jianhang Zhu , Jie Gong

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

This paper is motivated by emerging edge computing systems which consist of sensor nodes that acquire and process information and then transmit status updates to an edge receiver for possible further processing. As power is a scarce…

Information Theory · Computer Science 2020-03-31 Parisa Rafiee , Peng Zou , Omur Ozel , Suresh Subramaniam

Age-of-information (AoI) is a novel metric that measures the freshness of information in status update scenarios. It is essential for real-time applications to transmit status update packets to the destination node as timely as possible.…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-01-15 Qiaobin Kuang , Jie Gong , Xiang Chen , Xiao Ma

The last decade has witnessed an unprecedented growth in the demand for data-driven real-time services. These services are fueled by emerging applications that require rapidly injecting data streams and computing updated analytics results…

Performance · Computer Science 2019-03-05 Zhongdong Liu , Bo Ji

Age of Information (AoI) is emerging as a novel metric for measuring information freshness in real-time monitoring systems. For computation-intensive status data, the information is not revealed until being processed. We consider a status…

Information Theory · Computer Science 2025-08-21 Jianhang Zhu , Jie Gong

Age of Information (AoI) is a critical metric for several Internet of Things (IoT) applications, where sensors keep track of the environment by sending updates that need to be as fresh as possible. The development of edge computing…

Networking and Internet Architecture · Computer Science 2021-01-20 Federico Chiariotti , Olga Vikhrova , Beatriz Soret , Petar Popovski

Internet of Things (IoT) has been emerging as one of the use cases permeating our daily lives in 5th Generation wireless networks, where status update packages are usually required to be timely delivered for many IoT based intelligent…

Information Theory · Computer Science 2019-01-29 Chao Xu , Howard H. Yang , Xijun Wang , Tony Q. S. Quek

The Age of Information (AoI) is a performance metric that quantifies the freshness of data in systems where timely updates are critical. Most state-of-the-art methods typically assume that packets enter the monitored system with zero age,…

Information Theory · Computer Science 2025-12-01 Fernando Miguelez , Urtzi Ayesta , Josu Doncel , Maria Dolores Ugarte

Age of Information (AoI), which measures the time elapsed since the generation of the last received packet at the destination, is a new metric for real-time status update tracking applications. In this paper, we consider a status-update…

Information Theory · Computer Science 2022-02-15 Jianhang Zhu , Jie Gong

Information freshness and low latency communication is important to many emerging applications. While Age of Information (AoI) serves as a metric of information freshness, packet delay is a traditional metric of communication latency. We…

Information Theory · Computer Science 2019-01-15 Rajat Talak , Eytan Modiano

We consider a real-time monitoring system where a source node (with energy limitations) aims to keep the information status at a destination node as fresh as possible by scheduling status update transmissions over a set of channels. The…

Networking and Internet Architecture · Computer Science 2025-09-24 Mohamed A. Abd-Elmagid , Ming Shi , Eylem Ekici , Ness B. Shroff

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 status update scenarios, the freshness of information is measured in terms of age-of-information (AoI), which essentially reflects the timeliness for real-time applications to transmit status update messages to a remote controller. For…

Information Theory · Computer Science 2020-02-19 Qiaobin Kuang , Jie Gong , Xiang Chen , Xiao Ma

In real-time status update services for the Internet of Things (IoT), the timely dissemination of information requiring timely updates is crucial to maintaining its relevance. Failing to keep up with these updates results in outdated…

Networking and Internet Architecture · Computer Science 2024-10-03 Seifu Birhanu Tadele , Binayak Kar , Frezer Guteta Wakgra , Asif Uddin Khan

Freshness of data is an important performance metric for real-time applications, which can be measured by age-of-information. For computation-intensive messages, the embedded information is not available until being computed. In this paper,…

Information Theory · Computer Science 2019-01-16 Jie Gong , Qiaobin Kuang , Xiang Chen , Xiao Ma

In compute-first networking, maintaining fresh and accurate status information at the network edge is crucial for effective access to remote services. This process typically involves three phases: Status updating, user accessing, and user…

Networking and Internet Architecture · Computer Science 2024-12-25 Haosheng He , Jianpeng Qi , Chao Liu , Junyu Dong , Yanwei Yu

Mobile edge caching can effectively reduce service delay but may introduce information staleness, calling for timely content refreshing. However, content refreshing consumes additional transmission resources and may degrade the delay…

Networking and Internet Architecture · Computer Science 2020-02-17 Shan Zhang , Liudi Wang , Hongbin Luo , Xiao Ma , Sheng Zhou

Age of information (AoI), a notion that measures the information freshness, is an essential performance measure for time-critical applications in Internet of Things (IoT). With the surge of computing resources at the IoT devices, it is…

Information Theory · Computer Science 2021-08-10 Xijun Wang , Minghao Fang , Chao Xu , Howard H. Yang , Xinghua Sun , Xiang Chen , Tony Q. S. Quek
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