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 energy consumption of 5G        
        6.1     Where is energy consumed? 
        6.2     Baseline and variable power consumption      
 7     Energy saving design principles        
        7.1     Dynamic scaling           
        7.2     Shutdown capabilities              
        7.3     Trade-offs     
 8     Energy saving technologies for 5G RAN        
        8.1     Time-domain energy saving   
        8.2     Spatial-domain energy saving
        8.3     Frequency-domain energy saving        
        8.4     Power-domain energy saving
 9     AI-based energy saving for 5G RAN
        9.1     AI technology
        9.2     Energy saving based on AI      
        9.3     Architecture of AI-based energy saving             
Appendix I – Example of 5G power-domain energy saving practices –  Beam optimization energy saving    
Appendix II – Example of 5G power-domain energy saving practice –  Ultra-large-scale antenna array with beam pattern optimization    
Appendix III – Example of a 5G power-domain energy saving practice –  High gain antenna-lens antenna    
Appendix IV – Example of energy saving practice based on AI –  Service awareness energy saving for 4G/5G coordination    
Bibliography