Most previously expected deployments before 2022 to be extremely modest. The highly respected NTT DOCOMO CTO in 2015 predicted little mmWave mobile before 2022-2023. That became the common wisdom among leading engineers despite the massive pr it would be sooner. At the Brooklyn 5G, he acknowledged advances have been made and he now expects sooner. Ted Rappaport is no longer the outlier on projected volume deployment. Nothing is certain yet, but many think Onoe is on target. 3GPP, under pressure from telcos, is cooperating.
3GPP, under pressure from telcos, is cooperating. They are expediting the ridiculously named "5G New Radio Non-standalone." That's mostly a 4G LTE system with some software tweaks and the ability to use mmWave as well as Wi-Fi spectrum. The existing LTE network will handle the hard stuff,