中图分类号： TN929.5 文献标识码： A DOI：10.16157/j.issn.0258-7998.212317 中文引用格式： 宗佳颖，刘洋，刘海涛，等. 面向6G的微服务化无线网架构研究[J].电子技术应用，2021，47(12)：1-4，14. 英文引用格式： Zong Jiaying，Liu Yang，Liu Haitao，et al. Research on 6G microservice-based wireless network architecture[J]. Application of Electronic Technique，2021，47(12)：1-4，14.
Research on 6G microservice-based wireless network architecture
Zong Jiaying，Liu Yang，Liu Haitao，Yang Fengyi
5G R&D Center, China Telecom Research Institute，Beijing 102209，China
Abstract： With the development of cloud native, artificial intelligence, big data and other information technologies and the advancement of the trend of cloud-network integration, 6G-oriented wireless networks are moving towards software, intelligence, openness and servitization, achieving in-depth integration of communication and computing, perception and control. Servitization is an important feature of wireless networks to realize the deep fusion of the cloud and networks in services and to empower the endogenous intelligent characteristics of the wireless network. Based on the analysis of the driving force of microservice-based wireless access network, this paper proposes the logical architecture of 6G microservice-oriented wireless access network by drawing support from the existing concepts of 5G core network. And then the paper analyzes the possible future technological evolution directions.
Key words : 6G；service based architecture(SBA)；radio access network(RAN)；service based interface(SBI)
0 引言
为实现网络功能灵活快速部署和维护，适应不同场景的多种业务需求，5G核心网已经引入服务化架构(Service Based Architecture，SBA)，网络功能(Network Function，NF)间采用轻量级服务化接口(Service Based Interface，SBI)，利用SBA模块化、无状态、独立化、扁平化、自主化的优势，推动网络走向开放化、虚拟化[1]、软件化和服务化。但目前无线接入网(Radio Access Network，RAN)依旧采用传统的点对点结构，针对未来沉浸式云XR、全息通信、感官互联、数字孪生、元宇宙等新型应用[2]，无法很好地支持6G无线网络的业务需求和技术演进。6G RAN的微服务化技术研究是实现网络高效弹性、内生设计、开放生态的重要一环，受到学术界和产业界越来越多的重视。由奥卢大学科学基金会领导的6G Flagship指出未来网络向真正端到端基于服务的架构演进趋势，后续可能会为RAN开发类似于5G核心网的SBA框架[3]。欧盟5G基础设施协会认为借助6G，SBA有望实现全网全平面、端到端的扩展，包括核心网、RAN和终端，提供更大的部署和操作灵活性，支持网络的网络和系统的系统概念，以便于子系统集成和可扩展性[4]。中国IMT-2030(6G)推进组则将基于服务化的体系结构、云原生实现的网络虚拟化、微服务架构等作为可编程网络的重要使能因素，构成面向6G的控制面可编程和用户面各网元端到端可编程网络架构，增强敏捷性和灵活性，为消费者提供创新的通信服务[5]。因此，有必要深入研究面向6G的微服务化RAN架构及关键技术，综合来看其必要性如下：
