Gordon Mansfield of AT&T "told [management] that I want every day that’s left in the year ... The equipment is literally coming off production lines and going into the field — we are not even using normal shipping channels.” AT&T is the first in the world to use 39 GHz, a remarkable achievement.
AT&T has one of the best and most experienced senior engineering teams in the world, but the first efforts are struggling. It claims the supplier - probably Ericsson - isn't ready with the equipment in the 39 GHz band. They refuse to provide information on network speed. It may be as low as 250 megabits, half the LTE speed at T-Mobile in Manhattan.
“Now, in mmWave, it’s a new frontier. Sometimes you expect the signal to be there and it isn’t, so you have to adjust. As you move through the coverage area, you will be served by different beams, and you have to understand transitions between beams,” said Hristov. “RF engineers have to be hyper-accurate about placing and facing nodes … [because] if you don’t land on the right beam, you won’t get maximum performance.”