1、1 27th February 2023 2 Overview This paper is a collaborative work between China Telecom,China Unicom,Datang Mobile,Ericsson,Huawei and ZTE based on experience in China of 5G Network Co-Construction and Sharing conducted in GSMA Foundry.Since 2019,China Telecom and China Unicom have been working on

2、5G network co-construction and sharing,with major breakthroughs made in technology development,networking,operations,and management.Together,they have built the worlds first,largest,and fastest 5G Standalone(SA)shared network,realising one physical network correlated with two logical networks,and mu

3、ltiple customised private networks.This whitepaper describes the technology development,operations,management,business models,and future evolution of 5G network co-construction and sharing the technologies and solutions which have been proven effective by the Chinese operators.Project Team Since the

4、 initiation of 5G network co-construction and sharing,the project team has been working on the development of related standards,technical researches,and business deployment.Our sincere gratitude goes to the team members from the following organizations for their contributions to this guide:China Tel

5、ecom China Unicom Datang Mobile Ericsson Huawei ZTE 3 Contents Preface.4 Current Status of Global 5G Development.5 Challenge.5 Significance of 5G Network Co-Construction and Sharing.6 Best Practice.7 Key Technologies of 5G Network Co-Construction and Sharing.9 Evolution of Standards for Mobile Commu

6、nication Network Co-Construction and Sharing.9 5G Network Sharing.11 RAN Sharing.11 National Inter-CN Roaming.18 Spectrum Sharing.19 Dynamic Spectrum Sharing(DSS).19 Power Sharing.21 Inter-Carrier Dynamic Power Sharing.21 Promoting Standards and Industrialisation.23 International Roaming in 5GSA Net