Several 5G PPP projects have proposed new scenarios for identifying the requirements of 5G.
Similarly, other initiatives like NGMN, and standardization bodies like 3GPP and ITU‐R, have captured
the respective requirements so as to drive the research for handling the future demands. This
process has resulted in a large number of UCs with diverse requirements. The METIS‐II project has performed a detailed analysis of these in order to identify the similarities and the gaps between the
already proposed UCs [4]. We present here a summary of this analysis of the challenging UCs originatingfrom NGMN and from 5G PPP Phase 1 projects [7].

The Reference :
5G System Design
Architectural and Functional Considerations and Long Term Research
