The FANTASTIC-5G project advocates a single air interface for 5G, which is flexible, versatile, scalable and efficient in order to address the requirements of the IMT 2020. The flexibility featured by the FANTASTIC-5G air interface allows the support of a multitude of services and applications with diverse requirements, and shall be ready to provide solutions for future use cases not yet foreseen. As detailed in [FAN16-D21], the 5 core services constituting the 5G system are specified as Mobile Broadband (MBB), Massive Machine Communications (MMC), Mission Critical Communications (MCC), Broadcast/Multicast Communications (BMS) and Vehicular to anything communications (V2X).