That would seem to be the timeline planned by AT&T; the nation's second largest wireless operator is seeking from the FCC, a three-year experimental 5G license in Austin, Texas. The license will cover fixed and mobile tests in the 3400-3600 MHz, 3700-4200 MHz, 14500-15350 MHz and 27500-28500 MHz bands. The carrier will be using experimental equipment manufactured by a unnamed company. AT&T will test 5G using base stations to send and receive signals from devices on mobile vehicles, and from other base stations in fixed locations.
Sony's former smartphone partner Ericsson is said to be testing a 5G phone. We wouldn't call it a handset however, since the device is too large to fit inside a car. That tells us that 5G is still a few years away from being a viable consumer technology.
You can check out AT&T's three-page request for the experimental FCC 5G license by clicking on the sourcelink.
source: FCC via FierceWireless