5G承载网的架构演进及带宽分析

赵春华

doi:10.11959/j.issn.1000-0801.2019037

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5G承载网的架构演进及带宽分析

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- 5G承载网的架构演进及带宽分析
- Architecture evolution and bandwidth analysis of 5G bearer networks
- 电信科学 2019年35卷第2期页码：79-83
- 作者机构：
- 作者简介：
  
  [ "赵春华（1969- ），男，博士，广东省电信规划设计院有限公司高级工程师、技术总监、注册咨询工程师，主要研究方向为传送与接入网、IP网、5G承载网和电信网的网络转型。" ]
- 基金信息：
- DOI：10.11959/j.issn.1000-0801.2019037
  中图分类号： TN929.5
- 网络出版日期：2019-02，
  
  纸质出版日期：2019-02-20
- 稿件说明：
移动端阅览
赵春华. 5G承载网的架构演进及带宽分析[J]. 电信科学, 2019,35(2):79-83.

Chunhua ZHAO. Architecture evolution and bandwidth analysis of 5G bearer networks[J]. Telecommunications science, 2019, 35(2): 79-83.
赵春华. 5G承载网的架构演进及带宽分析[J]. 电信科学, 2019,35(2):79-83. DOI： 10.11959/j.issn.1000-0801.2019037.

Chunhua ZHAO. Architecture evolution and bandwidth analysis of 5G bearer networks[J]. Telecommunications science, 2019, 35(2): 79-83. DOI： 10.11959/j.issn.1000-0801.2019037.

摘要

阐述了5G移动网的架构演变对承载网的影响，对5G前传网和固定宽带接入网的光纤需求做了对比，阐述了光纤稀缺地区5G前传的各种承载方案，概述了各种设备组网方案的特点，分析了5G核心网下沉至城域核心DC和边缘DC对承载网架构和带宽的影响，给出了移动城域网中传和回传网络的带宽计算模型，对网络各层的带宽进行了计算。计算结果表明，相对于4G网络，5G网络无线侧带宽的增大使得对承载网回传带宽的需求大大增加，但核心网的下沉以及CDN和MEC的部署，减缓了回传和城域出口的带宽增长趋势。

Abstract

The influence of 5G mobile network architecture evolution on bearer network was demonstrated.A comparison of fiber requirement between 5G front-haul network and fixed broadband access network was proposed.The various bearer schemes in fiber shortage area were introduced.The characteristics of various device networking solution were summarized.The influence on bearer network architecture and bandwidth was analyzed when 5G core network moved down to the metro core DC and metro edge DC.The bandwidth calculation model on mobile metro mid-haul and back-haul network was presented.Bandwidth calculations on each layer of the networks were provided.Calculation results show that compared with 4G network

bandwidth requirements on bearer back-haul network are greatly increased as the bandwidth of the wireless side of the 5G network increases.The growth trend of the metro back-haul and export bandwidth is slowed down with the core network moving down and the deployment of CDN and MEC.

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references

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