This Recommendation aims to specify the QoS functional requirements for the International Mobile Telecommunications (IMT) 2020 network. This Recommendation first provides an overview of QoS requirements for IMT-2020. It then describes the high level QoS capabilities of the IMT-2020 network which include: QoS planning, QoS provisioning, QoS monitoring and QoS optimization. Based on these capabilities, this Recommendation specifies the QoS functional requirements for the IMT-2020 network.