无线接入网架构探讨

Discussion on Wireless Access Network Architecture

为满足5G多样化的需求,如何设计灵活、鲁棒且支持4G向5G平滑演进的接入网架构是5G需要解决的关键问题。从场景和关键能力指标出发,首先分析了5G无线接入网设计面临的挑战,指出了5G接入网应具备的主要技术特征,然后探讨了面向标准化5G接入网架构相关的几个关键功能应如何设计的问题,并针对CU-DU架构分析了各种切分选项的优/劣势,为移动运营商制定5G网络演进策略提供技术依据。

To satisfy 5G diversified requirements, the design of the flexible and robust radio access network （RAN） architecture supporting the smooth evolution from 4G to 5G is the crucial problem. According to scenarios and key capability rnetrics, the challenge to 5G RAN design was analyzed and the main technical features of 5G RAN were pointed out. Then, the design of several key functions oriented to the standard 5G RAN architecture was discussed. Finally, advantages and disadvantages of different split options for CU-DU architecture were expounded to provide a useful reference to operators to draw the 5G network evolution strategy.