中圖分類號： TN929.5 文獻標識碼： A DOI：10.16157/j.issn.0258-7998.212317 中文引用格式： 宗佳穎，劉洋，劉海濤，等. 面向6G的微服務化無線網架構研究[J].電子技術應用，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
為實現網絡功能靈活快速部署和維護，適應不同場景的多種業(yè)務需求，5G核心網已經引入服務化架構(Service Based Architecture，SBA)，網絡功能(Network Function，NF)間采用輕量級服務化接口(Service Based Interface，SBI)，利用SBA模塊化、無狀態(tài)、獨立化、扁平化、自主化的優(yōu)勢，推動網絡走向開放化、虛擬化[1]、軟件化和服務化。但目前無線接入網(Radio Access Network，RAN)依舊采用傳統(tǒng)的點對點結構，針對未來沉浸式云XR、全息通信、感官互聯(lián)、數字孿生、元宇宙等新型應用[2]，無法很好地支持6G無線網絡的業(yè)務需求和技術演進。6G RAN的微服務化技術研究是實現網絡高效彈性、內生設計、開放生態(tài)的重要一環(huán)，受到學術界和產業(yè)界越來越多的重視。由奧盧大學科學基金會領導的6G Flagship指出未來網絡向真正端到端基于服務的架構演進趨勢，后續(xù)可能會為RAN開發(fā)類似于5G核心網的SBA框架[3]。歐盟5G基礎設施協(xié)會認為借助6G，SBA有望實現全網全平面、端到端的擴展，包括核心網、RAN和終端，提供更大的部署和操作靈活性，支持網絡的網絡和系統(tǒng)的系統(tǒng)概念，以便于子系統(tǒng)集成和可擴展性[4]。中國IMT-2030(6G)推進組則將基于服務化的體系結構、云原生實現的網絡虛擬化、微服務架構等作為可編程網絡的重要使能因素，構成面向6G的控制面可編程和用戶面各網元端到端可編程網絡架構，增強敏捷性和靈活性，為消費者提供創(chuàng)新的通信服務[5]。因此，有必要深入研究面向6G的微服務化RAN架構及關鍵技術，綜合來看其必要性如下：
