Beam Training and Tracking in mmWave Communication:A Survey  

作　　者：Wang Yi Wei Zhiqing Feng Zhiyong 

机构地区：[1]Yangtze Delta Region Institute(Quzhou),University of Electronic Science and Technology of China,Quzhou 324003,China [2]School of Information and Communication Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China [3]Key Laboratory of Universal Wireless Communications,Ministry of Education,Beijing University of Posts and Telecommunications,Beijing 100876,China

出　　处：《China Communications》2024年第6期1-22,共22页中国通信（英文版）

基　　金：supported in part by the National Natural Science Foundation of China(NSFC)under Grant 92267202;in part by the Municipal Government of Quzhou under Grant 2023D027;in part by the National Natural Science Foundation of China(NSFC)under Grant 62321001;in part by the National Key Research and Development Program of China under Grant 2020YFA0711303;in part by the Beijing Natural Science Foundation under Grant Z220004.

摘　　要：Communicating on millimeter wave(mmWave)bands is ushering in a new epoch of mobile communication which provides the availability of 10 Gbps high data rate transmission.However,mmWave links are easily prone to short transmission range communication because of the serious free space path loss and the blockage by obstacles.To overcome these challenges,highly directional beams are exploited to achieve robust links by hybrid beamforming.Accurately aligning the transmitter and receiver beams,i.e.beam training,is vitally important to high data rate transmission.However,it may cause huge overhead which has negative effects on initial access,handover,and tracking.Besides,the mobility patterns of users are complicated and dynamic,which may cause tracking error and large tracking latency.An efficient beam tracking method has a positive effect on sustaining robust links.This article provides an overview of the beam training and tracking technologies on mmWave bands and reveals the insights for future research in the 6th Generation(6G)mobile network.Especially,some open research problems are proposed to realize fast,accurate,and robust beam training and tracking.We hope that this survey provides guidelines for the researchers in the area of mmWave communications.

关 键 词：6G beam tracking beam training BEAMFORMING mmWave 

分 类 号：TN929.5[电子电信—通信与信息系统]