6G移动通信:愿景、关键技术和系统架构

6G mobile communication:vision,key technologies and system architecture

随着各类通信业务的快速发展以及新型应用需求的不断出现,用户应用对网络覆盖、数据传输速率及端到端时延提出更高要求。第6代(sixth generation,6G)移动通信系统将满足完全连接智能数字世界需求,实现网络全覆盖、高度智能化及网络安全性的全面提升。6G将支持多种无线接入技术的深度融合,通过对更高频段的高效利用、对各类创新技术的广泛使用,以及对网络架构演进,全面提升网络性能。在对6G系统进行概述的基础上,对其愿景及性能进行介绍,对各类关键技术,包括空口技术、频谱接入、智能网络管理及数字孪生等进行了详细阐述,给出了关于6G网络架构的设想。

The rapid development of various communication services and the continuous emergence of new applications pose higher requirements for network coverage,data transmission rate and end-to-end delay.The sixth generation(6G)mobile communication system is expected to meet the needs of fully connected intelligent digital world,and achieve the improvement of network coverage,high intelligence and network security.6G will support the deep integration of a variety of radio access technologies,and improve network performance through the efficient use of higher frequency bands,the extensive use of various innovative technologies,and the evolution of network architectures.On the basis of an overview of 6G system,this paper introduces the vision and performance indicators of 6G.A number of key technologies of 6G,including air interface technologies,spectrum access and sharing,intelligent network management and digital twin technology,are described in detail.Finally,the overview of 6G network architecture is given.