面向5G C-RAN组网的机房配置标准与模型
2020-06-08李伟平戴俊陈欢古亦聪侯兴华樊正茂
李伟平 戴俊 陈欢 古亦聪 侯兴华 樊正茂



【摘 要】当前5G网络建设成本高,投资压力大,基站建设进度受铁塔公司制约;基站机房电费、租赁、服务费用逐年上升,运营维护压力大。面向未来5G建设,通过C-RAN组网,实现BBU集中化部署,可促进降本增效,实现低成本建网。首先分析了C-RAN区所处的网络位置,其次从BBU框多基站/多载波配置能力、单机柜装机空间等维度,阐述了C-RAN机房配置标准,最后以某省C-RAN规划为例,得出C-RAN机房配置模型,并对C-RAN机房的选择提出了建议。
【关键词】5G;C-RAN;配置模型
The current 5G network has high construction cost and investment pressure, and thus the construction progress of base stations is restricted by the tower company. Electricity, rental and service costs of base station computer room are yearly increasing, which results in heavy pressure on the operation and maintenance. Through C-RAN networking with BBU centralized deployment, future 5G network construction can promote cost reduction and efficiency, and achieve low-cost networking. Firstly, the network location of C-RAN region is analyzed. Secondly, from the BBU frame with multi-base station/multi-carrier configuration capability and single cabinet installation space and other dimensions, this paper elaborates the configuration standard of the C-RAN room. Finally, taking the C-RAN planning of a province as an example, the configuration model of C-RAN computer room is obtained, and some suggestions are given to select the computer room.
5G; C-RAN; configuration model
1 C-RAN区的网络位置
基于综合业务接入区的C-RAN网络规划,位于一级光交网络之上,综合业务接入区以下。C-RAN规划区域边界与综合业务接入区规划边界保持一致,不跨传输综合业务接入区进行部署,1个综合业务区可以规划多个C-RAN区。一般,同一个C-RAN区应包含辖区内一级光交所辖的所有微网格。C-RAN网络位置图如图1所示。
(1)1~N個微网格共同组成一个一级光交网格,每个微网格只归属于一个一级光交网格;
(2)1~N个一级光交网格共同组成一个C-RAN区网格,每个一级光交网格只归属于一个C-RAN区网格;
(3)1~N个C-RAN区网格共同组成一个综合业务接入区,每个C-RAN区网格只归属于一个综合业务接入区。
2 C-RAN机房配置标准
2.1 BBU框多基站、多载波配置
对于C-RAN组网,应合理采用单BBU机框的多基站、多载波配置,多个物理基站集中后,可以节省BBU机框和主控板,减少空间需求,设备功耗亦相应有所降低。
(1)以收编物理站址为原则,把同厂家设备多个基带板、主控板等收编入框。……
