Radio sensing has become increasingly important, as the demand for "smartness" is drastically increasing. Unlike conventional sensing, radio sensing uses existing radio signals or devices to passively sense the ambient environment for low cost and wide deployment. In this paper, a comprehensive overview of radio sensing using the recent fifth generation (5G) signals is provided. 5G systems have many merits, such as high frequency, large bandwidth, massive antenna array and dense network, making them ideal for radio sensing. In the overview, basic theories and concepts of 5G radio sensing are first introduced. Then, different state-of-the-art 5G sensing works are discussed based on their applications. These applications show that 5G radio sensing represents a step change in radio sensing. After that, several open challenges in 5G radio sensing are illustrated with relevant insights. These insights manifest that 5G radio sensing has great potentials to explore.
Bibliographical noteKAUST Repository Item: Exported on 2022-01-18
Acknowledgements: This work was supported in part by EC H2020 DAWN4IoE-Data Aware Wireless Network for Internet-of-Everything under Grant 778305; in part by the National Key Research and Development Program of China under Grant 2020YFA0711301; and in part by the National Natural Science Foundation of China under Grant 61941104 and Grant 61922049.
ASJC Scopus subject areas
- Signal Processing
- Information Systems
- Information Systems and Management
- Computer Science Applications
- Hardware and Architecture
- Computer Networks and Communications