The IMT-2020 minimum performance requirements for 5G contemplate a peak downlink data rate of 20 Gbps. To get that kind of speed, high-capacity spectrum in the millimeter wave frequencies is essential. Just look at how Verizon and AT&T are approaching 5G commercialization later this year; the former is using the 28 GHz band to deliver residential broadband and the later is using the same band to offer up standard-compliant mobile 5G.
