Table of Contents

1     Scope          
 2     References
 3     Definitions
        3.1     Terms defined elsewhere       
        3.2     Terms defined in this Recommendation           
 4     Abbreviations and acronyms             
 5     Conventions            
 6     Overview of NaaS functional architecture    
        6.1     Key NaaS characteristics          
        6.2     NaaS CSC activities     
        6.3     Virtualization of network functions    
 7     Functionalities for NaaS      
        7.1     NaaS business related functionalities 
        7.2     Functionalities for NaaS service instantiation  
        7.3     Functionalities for NaaS service orchestration
        7.4     Functionalities for network analytics  
        7.5     Autonomic functionalities       
        7.6     Policy related functionalities 
        7.7     NaaS resource functionalities
        7.8     Functionalities for an evolved real-time OSS   
        7.9     Functionalities for the development of NaaS products and NaaS services           
 8     Functional components      
        8.1     Business support system functional components for NaaS products     
        8.2     Service layer functional components for NaaS
        8.3     OSS functional components   
        8.4     Functional components for NaaS development support            
 9     Security considerations       
Annex A – OSS reference points    
Annex B – Functional components on mapping between physical and virtualized networks    
        B.1     Physical network        
        B.2     Virtualized network  
        B.3     Physical-virtualized-networks mapping            
Appendix I  Mapping among NaaS functional requirements and functionalities    
        I.1     Mapping and derivation of functionality for NaaS service instantiation 
        I.2     Mapping and derivation of functionality for service orchestration          
        I.3     Mapping and derivation of functionalities for network analytics, policy, and autonomy    
        I.4     Mapping and derivation of functionality for mapping between physical and virtualized networks    
        I.5     Mapping and derivation of functionalities for an evolved real-time OSS
        I.6     Mapping and derivation of functionalities for NaaS products and NaaS services development    
        I.7     Mapping and derivation of functionalities related to NaaS business       
Appendix II – Modelling usage example of NaaS service, NaaS service operational policy, and NaaS resource model    
       II.1     Introduction  
       II.2     Modelling usage          
Appendix III – Relationship between NaaS functional architecture and SDN    
Appendix IV – Example of NFV and SDN usage in support of NaaS architecture    
Bibliography