面向零功耗物联网的反向散射通信综述  

Survey on backscatter communication for zero-power IoT

作　　者：张晓茜 徐勇军[1,3] ZHANG Xiaoxi;XU Yongjun(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;Research Center of New Digital Intelligent Telecommunication Technology Applications,Chongqing 400065,China;Chongqing Key Laboratory of Mobile Communication Technology,Chongqing 400065,China)

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065 [2]数智化通信新技术应用研究中心,重庆400065 [3]移动通信技术重庆市重点实验室,重庆400065

出　　处：《通信学报》2022年第11期199-212,共14页Journal on Communications

基　　金：国家自然科学基金资助项目(No.62271094);重庆市教委科学技术研究重点项目(No.KJZD-K202200601);重庆市博士后研究项目特别资助项目(No.2021XM3082);重庆邮电大学高等科学研究院基金资助项目(No.E011A2022324)。

摘　　要：物联网能够提升人们的生活质量,但同时带来能量消耗剧增与网络传输拥堵的问题。为此,面向零功耗物联网的反向散射通信技术被提出,分析与研究该技术的发展现状及所面临的技术难题有着非常重要的意义。首先,阐明了零功耗物联网与反向散射通信的基本定义与技术特点;其次,描述了6G网络中零功耗反向散射通信的典型应用场景;再次,给出了零功耗物联网反向散射通信的系统架构,并对面向6G零功耗物联网的反向散射通信关键技术进行了探讨;最后,浅析了零功耗反向散射通信所面临的技术挑战与未来潜在的研究方向。此外,所提观点有望推动物联网向全场景、全频谱、全业务方向发展,具有重要的理论意义与现实价值。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 technolo-gies 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.

关 键 词：零功耗物联网 反向散射通信 6G 智能反射表面 

分 类 号：TN92[电子电信—通信与信息系统]