论文标题
向3GPP发行18的大规模MIMO进化
Massive MIMO Evolution Towards 3GPP Release 18
论文作者
论文摘要
自从第三代合伙项目（3GPP）第15次引入第五代新广播（5G-NR）以来，随着3GPP版本18的出现，已经取得了迅速发展为5G的进步。一个关键的方面是大量多输入多输出（MIMO）技术的设计。在这一行中，本文做出了一些重要的贡献：我们在跨频段FR-1和FR-2的时间/频段双链操作中详细概述了标准化的大型MIMO特征从3GPP版本15到17的演变。我们分析了通道状态信息（CSI）框架，梁管理框架和上行链路CSI的呈现增强功能的进度。我们阐明了新兴的3GPP发布18个需要关注的问题。其中包括具有多个传输/接收点（Multi-trps）的连贯关节传输（CJT）的高级代码书设计和发声参考信号设计。我们讨论了上行链路解调参考信号设计的进步，提供准确的CSI估计值的移动性增强功能以及针对FR-2频段量身定制的统一传输配置指标框架。对于每个概念，我们提供系统级仿真结果，以突出其性能优势。通过在上海Jiaotong大学的室外环境中进行实地试验，我们证明了相对于3.7 GHz的单个TRP的多TRP CJT的收益。
Since the introduction of fifth-generation new radio (5G-NR) in Third Generation Partnership Project (3GPP) Release 15, swift progress has been made to evolve 5G with 3GPP Release 18 emerging. A critical aspect is the design of massive multiple-input multiple-output (MIMO) technology. In this line, this paper makes several important contributions: We provide a comprehensive overview of the evolution of standardized massive MIMO features from 3GPP Release 15 to 17 for both time/frequency-division duplex operation across bands FR-1 and FR-2. We analyze the progress on channel state information (CSI) frameworks, beam management frameworks and present enhancements for uplink CSI. We shed light on emerging 3GPP Release 18 problems requiring imminent attention. These include advanced codebook design and sounding reference signal design for coherent joint transmission (CJT) with multiple transmission/reception points (multi- TRPs). We discuss advancements in uplink demodulation reference signal design, enhancements for mobility to provide accurate CSI estimates, and unified transmission configuration indicator framework tailored for FR-2 bands. For each concept, we provide system level simulation results to highlight their performance benefits. Via field trials in an outdoor environment at Shanghai Jiaotong University, we demonstrate the gains of multi-TRP CJT relative to single TRP at 3.7 GHz.
