5G承载网关键技术及发展

doi:10.11959/j.issn.1000-0801.2020245

Abstract

Abstract:

5G will have significant changes in business scenarios,access network,core network and other aspects.It puts forward the requirements of “larger bandwidth,ultra-low delay and high reliability” for bearer network,as well as new requirements for network slicing and flexible networking.Combined with the STN architecture,the key technologies of STN were analyzed,such as SRv6,FlexE,flow detection,intelligent control,etc.,and the STN and SPN were compared,and the specific bearing scheme of STN 5G service was given,which met the differentiated bearing of 5G 2B and 2C services.

Key words: smart transport network, SRv6, FlexE, EVPN

CLC Number:

TP393

Peiyong MA,Wei WU,Wenqiang ZHANG,Guangming YANG,Feng YANG. Key technologies and development of 5G bearer network[J]. Telecommunications Science, 2020, 36(9): 122-130.

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References 10

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类别	主要应用	端到端时延需求	质量保障	业务网关（MEC/UPF）位置	业务流量流向
低时延类	智能制造、智慧电网、矿山、港口、无人机等	一般20 ms内，最多不超过30 ms	高质量要求，业务质量要求不受网络拥堵影响	以园区部署为主	基站-MEC、MEC-云
高安全性类	媒体直播、远程医疗、智慧安防、	一般不超过100 ms	高质量要求，业务质量要求不受网络拥堵影响	地市核心/省核心	基站-UPF/云
一般运用类	智慧园区、道桥巡检	一般不超过100 ms	一般无特殊要求	园区/地市核心	基站-MEC/UPF

STN关键技术	所满足需求或解决挑战
FlexE	? 不同业务间硬件级安全隔离
	? 保障业务流量的转发性能
SRv6	? 根据需求将流量引入对应切片进行保障
	? 优化转发路径，确保访问体验
	? 网络可编程，使能网络能力敏捷平滑演进
随流检测	? 业务流量访问体验感知，作为路径优化和故障定位的输入
智能管控与编排	? 超海量业务快速开通和管控
	? 跨厂商设备统管，推进设备能力和演进路线标准化，优化产业链，降低建设成本
	? 智能编排DC和网络资源，智能故障诊断，实现端到端多流程自动化闭环，降低运营成本

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Key technologies and development of 5G bearer network

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