Field trials underway. mmWave is exciting, drawing headlines, and certainly will be crucial one day. Massive MIMO is here today, deploying by the thousands at China Mobile and Softbank Japan. Verizon's Shamsundar told me last year, "We must have Massive MIMO." The early generation of M-MIMO and mmWave are showing 3X to 5X performance improvements. 50X improvements will be possible, although no one believes that other than a few engineers.
Now, AT&T has confirmed they are in field trials. AT&T has invested in Blue Danube, whose 96 antenna BeamCraft 500, right, is about 5 feet tall. It produced a 2X to 5X improvement in a selected high traffic area. These results are yet more proof of the potency of Massive MIMO. ZTE and Huawei are seeing 3X to 10X improvements from full Massive MIMO systems at Softbank and China Mobile. With eight antennas, Huawei is delivering 1.5X in Kuwait.