T-Mobile has successfully tested 5G triple carrier aggregation (NR CA) using 5G standalone (SA) and mid-band spectrum, achieving an impressive downlink data rate of 3 Gbps. Triple CA is not new, but non-standalone (NSA) 5G requires that one of those three carriers be slower 4G, limiting potential data speeds. SA mode allows all three carriers to be 5G, and two can even be in the same band. T-Mobile's band 41 mid-band spectrum is wide enough to allow that in some parts of the country. T-Mobile's test combined 100 MHz of band 41 (2.5 GHz) + another 90 Hz of band 41 + 20 Mhz of band 25 (1.9 GHz), for a total of 210 Hz of bandwidth. The test used a Samsung Galaxy S22, and customers with that phone can experience NR CA in some areas today. "This capability will expand across the Un-carrier's network and to additional devices in the near future."


More...