论文标题
MMWave通信中的光束训练和跟踪：调查
Beam Training and Tracking in MmWave Communication: A Survey
论文作者
论文摘要
在毫米波（MMWave）频段上进行通信正在迎来一个新的移动通信时代，该时期提供了10 Gbps高数据速率传输的可用性。但是，由于严重的自由空间路径损失和障碍物的阻塞，MMWave链接很容易容易出现短传输范围通信。为了克服这些挑战，可以利用高度方向的光束来通过混合光束形成来实现牢固的联系。准确地对齐发射器和接收器梁，即梁训练，对于高数据速率传输至关重要。但是，它可能会导致巨大的开销，这对初始访问，移交和跟踪有负面影响。此外，用户的移动性模式是复杂且动态的，这可能会导致跟踪错误和大型跟踪延迟。有效的光束跟踪方法对维持稳健的链接具有积极影响。本文概述了MMWave乐队上的光束训练和跟踪技术，并揭示了第六代（6G）移动网络中未来研究的见解。特别是，提出了一些开放的研究问题，以实现快速，准确且健壮的光束训练和跟踪。我们希望这项调查为MMWave Communications领域的研究人员提供指南。
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.
