面向零功耗物联网的反向散射通信综述

doi:10.11959/j.issn.1000-436x.2022199

Abstract

Abstract:

Although Internet of things (IoT) can enhance the quality of people’s life, but it also brings the problems of energy consumption and network transmission congestion.To solve the above problems, backscatter communication technology for zero-power IoT has been proposed.Thus, it is of great significance to survey the state-of-the-art technologies and study the relevant challenges.Firstly, the basic definition and technical characteristics of zero-power IoT and backscatter communications were presented.Secondly, several typical application scenarios for zero-power backscatter communications in 6G were introduced.Thirdly, the system structure of zero-power backscatter communications was given and the potential key technologies of zero-power backscatter communications for 6G applications were also discussed.Finally, the technical challenges and potential research directions for zero-power backscatter communications were analyzed.Additionally, the proposed overview was of important theoretical significance and practical values for promoting the development of IoT toward full scenes, full spectrum, and many types of services.

Key words: zero-power IoT, backscatter communication, 6G, intelligent reflecting surface

CLC Number:

TN92

Xiaoxi ZHANG, Yongjun XU. Survey on backscatter communication for zero-power IoT[J]. Journal on Communications, 2022, 43(11): 199-212.

Figures/Tables 18

References 84

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模式	最小发送功率/μW	最大传输速率/（kbit·s^-1）	距离/m
环境反向散射	0.79	10	0.4
Wi-Fi反向散射	9.65	1	—
LoRa反向散射	9.25	37.5	—
FM反向散射	11.07	3.2	4.9

Survey on backscatter communication for zero-power IoT

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