20 top telcos banded together to set a common path for the next thirty years. China Mobile, Deutsche Telekom, AT&T and many others have now produced the NGMN 5G End-to-End Architecture Framework O.8.1. The 36 pages are a blueprint of how the telcos want the future. They've done an extraordinary job making the concepts clear to anyone knowledgeable in today's wireless.
This is the antithesis of the Internet model, a network of networks connected but operating independently. Implicitly, everything would be under the control of the telcos. They would have standard procedures to work together for international traffic, based on everyone having common QoS control.