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Author Topic: T-Mobile successfully tests low-band 5G  (Read 11274 times)

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T-Mobile successfully tests low-band 5G
« on: July 24, 2019, 05:26:28 AM »

Just shy of two weeks ago, T-Mobile, Qualcomm, and Ericsson successfully completed the first 5G data call over the carrier's low-band 600MHz spectrum. And this afternoon Neville Ray, T-Mobile's Chief Technical Officer, tweeted with some related news; while the first test was done in the lab, today the data call was successfully completed in the wild. Besides T-Mobile's low-frequency airwaves, the test employed Qualcomm's Snapdragon X55 5G modem chip and 5G radios from Ericsson.

In case you were wondering, this test could not use the currently available Snapdragon X50 5G modem chip because the latter only supports the ultra-high band mmWave spectrum. The Snapdragon X55 supports both mmWave and sub-6GHz networks. Understanding the difference between mmWave and 600MHz spectrum will help you see why T-Mobile expects to be the first U.S. carrier with a nationwide 5G network. Low-band spectrum travels farther and penetrates buildings easier than spectrum in the higher-bands. Since Verizon plans on sticking with mmWave technology, in theory, it will take Verizon longer than T-Mobile to build a 5G network with coverage coast to coast.


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