面向B5G/6G大规模机器通信系统新型多址技术研究进展  

Research progress of new multiple access technique for B5G/6G massive machine-type communication systems

作　　者：戴基明 马国玉 马毅琰 薛珍 艾渤[1] Jiming DAI;Guoyu MA;Yiyan MA;Zhen XUE;Bo AI(State Key Laboratory of Rail Traffic Control and Safety,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京交通大学轨道交通控制与安全国家重点实验室,北京100044

出　　处：《中国科学：信息科学》2022年第4期639-657,共19页Scientia Sinica(Informationis)

基　　金：中央高校基本科研业务费专项资金(批准号:2021RC205,2021JBM438);国家自然科学基金(批准号:62101024,61725101,U1834210,6196113039);轨道交通控制与安全国家重点实验室(北京交通大学)自主研究课题(批准号:RCS2020ZT010,RCS2019ZZ007,RCS2022ZT012)资助。

摘　　要：大规模机器通信作为第五代移动通信系统的三大应用场景之一,也是支撑未来第四次工业革命的关键技术.其主要通过部署大量的机器设备,以实现智能型社会.由于低功耗要求,人们引入了免授权随机接入来减少设备与基站间的信令交互过程.加之无线电资源的匮乏,如何实现大规模机器设备的免授权随机接入成为挑战.在B5G以及6G中,这一挑战将变得尤为显著.因此有必要研究出一种行之有效的多址接入技术.串联扩频多址技术是一种实现大规模机器设备高效连接的新型非正交多址接入技术,并且能够以较低的复杂度实现高连接性和高可靠性.本文首先综述了大规模机器通信的特点及多址技术的研究现状.然后,介绍了串联扩频多址技术的收发机设计和性能权衡性分析.最后,介绍了串联扩频多址技术的研究进展和应用进展.Massive machine-type communication(mMTC)is one of the three major application scenarios of the 5th generation mobile communication system and a significant technique supporting the fourth industrial revolution in the future.It mainly deploys numerous machine-type devices to realize an intelligent society.Due to the low power consumption requirements,people have introduced grant-free random access to reduce the signaling interaction between the device and the base station.Coupled with the lack of radio resources,achieving grant-free random access for massive devices has become a challenge,which will become more significant in B5G and 6G.Therefore,it is necessary to develop an effective multiple access technique.Tandem spreading multiple access(TSMA)is a novel non-orthogonal multiple access technique that realizes the efficient connection of massive machine-type devices and can achieve high connectivity and reliability with low complexity.This article first summarizes the characteristics of mMTC and the research status of multi-access techniques.Then,the transceiver design and the performance trade-off analysis of the TSMA technique are introduced.Finally,the research and application progress of the TSMA technique are discussed.

关 键 词：大规模机器通信 非正交多址 串联扩频多址 B5G 6G 

分 类 号：TN929.5[电子电信—通信与信息系统]