面向Sub-7 GHz频段分布式超大规模MIMO技术  

Distributed Extremely Large-Scale MIMO Technology for Sub-7 GHz Frequency Band

作　　者：索士强 谌丽 宋磊 苏昕 黄瑞华 王浩 SUO Shiqiang;CHEN Li;SONG Lei;SU Xin;HUANG Ruihua;WANG Hao(CICT Mobile Communication Technology Co.,Ltd.,Beijing 100000,China)

机构地区：[1]中信科移动通信技术股份有限公司,北京100000

出　　处：《移动通信》2024年第6期20-26,共7页Mobile Communications

摘　　要：下一代移动通信系统将在新的频段进一步提升整体性能。面向未来6G系统在Sub-7 GHz频段部署所面临的连续覆盖、容量提升以及部署困难等潜在难题,提出了一种创新的总体方案。这一方案结合了以用户为中心的接入网架构与分布式超大规模MIMO技术,旨在实现更高效的通信性能和用户体验。在所提出的以用户为中心的网络构架中,系统能够突破中心化限制,构建出中心网络与边缘分布式网络结合的以用户为中心的端到端分布式自治网络,智能自适应端到端用户需求。基于该构架可通过动态调整小区的覆盖范围和容量,更好地应对不同场景下的用户需求。通过优化连接管理策略,可以有效减少连接中断和延迟,提升系统的稳定性和用户的满意度。针对上述接入网络构架,给出了分布式超大规模系统中的灵活小区构建、链接管理及接入过程方案,并对CSI测量上报、分布式天线校准等底层核心问题进行了分析。The overall performance of the next generation mobile communication systems will be further improved in new frequency bands.Facing the potential challenges of continuous coverage,capacity improvement,and deployment difficulties in the Sub-7GHz frequency band for future 6G systems,an innovative overall solution is proposed.This solution combines a user-centric access network architecture with distributed massive MIMO technology,aiming to achieve more efficient communication performance and user experience.In the proposed user-centric network architecture,the system can break through the centralized limitations and establish a user-centric end-to-end distributed autonomous network that integrates central and edge distributed networks,intelligently adapting to end-to-end user needs.Based on this architecture,the system can dynamically adjust the coverage and capacity of cells to better meet user demands in different scenarios.By optimizing the connection management strategy,connection interruptions and delays can be effectively reduced,enhancing the system stability and user satisfaction.For the aforementioned access network architecture,flexible cell construction,link management,and access process schemes are provided in a distributed massive MIMO system.Additionally,core underlying ssues such as CSI measurement and reporting as well as distributed antenna calibration are analyzed.

关 键 词：分布式超大规模MIMO 以用户为中心的智能接入网 灵活小区 6G 

分 类 号：TN929.5[电子电信—通信与信息系统]