The objective of this Recommendation is to provide AI-assisted intelligent energy efficiency management of virtual resources in IMT-2020 networks and beyond, including functional requirements, architectural model, reference points and service procedures. This Recommendation specifies AI-assisted energy efficiency management of virtual resources in IMT-2020 networks and beyond. This recommendation covers the following aspects: Functional requirements of energy efficiency management of virtual resources in IMT-2020 networks and beyond; Architectural model of energy efficiency management of virtual resources in IMT-2020 networks and beyond; Reference points of energy efficiency management of virtual resources in IMT-2020 networks and beyond; Procedures of energy efficiency management of virtual resources in IMT-2020 networks and beyond.