5G FDD通信制式发展与研究  

Development and Research of 5G FDD Communication System

作　　者：金淼 樊忠文 夏烛 JIN Miao;FAN Zhongwen;XIA Zhu(Huaxin Consulting Design&Research Institute Co.,Ltd.,Hangzhou Zhejiang 310052,China)

机构地区：[1]华信咨询设计研究院有限公司,浙江杭州310052

出　　处：《通信技术》2021年第11期2527-2532,共6页Communications Technology

摘　　要：时分双工(Time Division Duplex,TDD)通信制式相较于频分双工(Frequency Division Duplex,FDD)制式而言频谱利用效率更高,特别是针对5G频谱资源需求而言,TDD制式极大缓解了频谱资源紧张局面;然而随着当前5G网络主承载架构TDD制式大规模入网,单纯的5G TDD制式覆盖不能满足各个运营商的成本和运营综合收益平衡需求。5G FDD制式发展能够有效实现4G到5G网络架构平滑过渡,农村、山区、海域场景低成本覆盖。通过深入分析针对5G FDD制式结构特性以及特性使用,加快5G网络覆盖程度,同时为4G到5G用户转变、网络运营成本和质量提升提供研究方向。Compared with FDD(the Frequency Division Duplex),TDD(Time Division Duplex)has higher spectrum utilization efficiency,especially for 5G spectrum resource demand,which greatly alleviates the spectrum resource shortage.However,with the large-scale access of the current 5G network main bearer architecture TDD system,the simple 5G TDD system coverage cannot meet the balance of the cost and comprehensive income of each operator.5G FDD system development can effectively realize the smooth transition from 4G to 5G network architecture,as well as low-cost coverage of rural,mountain and sea scenes.This paper analyzes in-depth the structural characteristics and use of the 5G FDD system,speeds up the coverage of 5G networks,and provides research directions for the transformation of 4G to 5G users,network operating costs and quality improvement.

关 键 词：5G FDD 频谱资源 协同组网 

分 类 号：TN929.5[电子电信—通信与信息系统]