scope:

This Recommendation describes the requirements of the capability exposure for supporting FMC in IMT-2020 networks. It also defines the functional architecture, the functional entities, the procedures and the high-level API descriptions for network capabilities exposure for supporting FMC in IMT-2020 networks.

This Recommendation is also aligned with the requirements identified in [ITU-T Y.3101], [ITU-T Y.3130] and [ITU-T Y.3105]. Based on the capabilities exposure of the IMT-2020, the capability exposure requirements, architecture and processes are enhanced in order to support FMC.

In particular, the enhanced capabilities include, unified authentication, authorization and charging, user's access type and capability, multi-access edge computing, unified customization of QoS capabilities, FMC network slice control, session management and mobility management, unified user data.