Age of Information in the Internet of Things: Concepts, Metrics, and Applications

Chen Zechao

Keywords: Age of Information, Internet of Things, Data Freshness, Real-time Communication, Queue Optimization, Wireless Sensor Networks

TL;DR: The paper systematically summarizes the fundamental concepts, key metrics, and optimization strategies of AoI, while exploring its applications in typical IoT scenarios.

Abstract: Age of Information (AoI) is an emerging metric used to evaluate the timeliness of data updates in the Internet of Things (IoT). It has gained significant attention in recent years in the fields of network optimization, communication scheduling, and resource allocation. This paper systematically summarizes the fundamental concepts, key metrics, and optimization strategies of AoI, while exploring its applications in typical IoT scenarios. Special emphasis is placed on challenges and practices in energy-constrained devices and multi-hop networks. Finally, the paper discusses the future research directions of AoI in intelligent systems and the potential technical bottlenecks that may arise.

Submission Number: 8