1、1/18Table of Contents1.Abstract.22.O-RAN Architecture.23.6G Vision and design target.34.Key technical pillars and considerations.44.1Network architecture considerations.44.2Service based RAN.64.3AI.84.3.1 Cross-domainAI collaboration.104.3.2 Large Model.114.4 Spectrum sharing.124.5 Sustainability an

2、d Energy saving.145.Forward-Looking.16Reference.16Abbreviation.17Authors.182/181.AbstractO-RAN ALLIANCE has been founded in 2018 by AT&T,China Mobile,Deutsche Telekom,NTT DOCOMO and Orange.Since then,O-RAN ALLIANCE has become a world-widecommunity of mobile network operators,vendors,and research&aca

3、demic institutions operatingin the Radio Access Network(RAN)industry.The mission is to re-shape the RAN industrytowards more intelligent,open,virtualized and fully interoperable mobile networks.O-RANleverages most of the physical features defined in 3GPP,which maintains a unified and healthyecosyste

4、m.O-RAN specifications splits the network entities and defines the interfaces to facilitatethe multi-vendor jointly develop and interoperate test the products.ITU defined IMT-2030 Framework and related timeline,and the industries initialized the 6Gstudy according.O-RAN also kicked off the 6G study i

5、n nGRG,which is to formulate the 6Grelated views before standard.Beyond the advanced features,O-RANs flexible architecture couldprovide some unique advantages for future 6G networks,which includes programable architecturefor network intelligence,service-based RAN design,sufficient network power opti

6、mization,flexible spectrum sharing and etc.This whitepaper briefly introduces some key 6G technical pillars based on O-RAN nGRGdiscussion.To facilitate the reader to understand the technical issues and considerations,theO-RAN architecture is introduced in section 2.We also provide forward looking fo