T-Mobile today said it, too, has successfully tested LTE-LAA in real-world trials. The company claims its LTE-LAA tests reached 741 Mbps in and around Los Angeles. Like the recent tests conducted by AT&T, T-Mobile's use of LTE-LAA combines airwaves that it owns along with unlicensed spectrum to push speeds upward. T-Mobile says it was able to aggregate 80 MHz between licensed and unlicensed spectrum in its trials to attain the 741 Mbps download rate. More importantly for the short term, T-Mobile has deployed LTE-U in some markets. LTE-U relies on public 5 GHz spectrum (same as WiFi) along with advanced network technologies including carrier aggregation, 256 QAM, and 4x4 MIMO to boost LTE performance. T-Mobile is offering LTE-U in Bellevue, Wash.; Brooklyn, N.Y.; Dearborn, Mich.; Las Vegas, Nev.; Richardson, Texas; and Simi Valley, Calif. More markets will score LTE-U service later this year. Right now, the Samsung Galaxy S8 is the only device able to take advantage of LTE-U.


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