SRG(Signal Research Group) did this study with the support of Accuver Americas (XCAL5/XCAL-Solo and XCAP). 

SRG just completed its 32nd 5G benchmark study. For this endeavor SRG collaborated with Accuver Americas to conduct an independent

benchmark study of 5G mmWave 4 component carrier (4CC) uplink performance, using AT&T’s commercial network in Glendale, AZ.

For more detailed information, please refer to attachment.