T-Mobile Makes Upgrades to its 5G Network
Mar 1, 2023, 12:19 PM by Rich Brome @rbrome
T-Mobile has announced two key steps in upgrading its 5G network to be faster and more advanced. First, the company has successfully tested four-carrier aggregation with 5G SA (stand-alone). In the test, this technology allowed a Samsung Galaxy S23 to hit peak speeds topping 3.3 Gbps. The test combined two channels (carriers) of 2500 MHz spectrum (band 41) and two channels of 1900 MHz spectrum (band 2/25), creating an one effective channel of 5G SA that was 225 MHz wide. "Customers with the Samsung Galaxy S23 will be among the first to experience four-carrier aggregation later this year with more devices to follow." The other announcement is the deployment of VoNR in six cities. VoNR is 5G-native voice calling; currently, most voice calls are still made over 4G LTE. The six cities that now have VoNR enabled are: New York City, Seattle, Portland, New Orleans, Cincinnati, and Salt Lake City. Consumers are unlikely to notice a change, although voice call setup time should be slightly faster. Behind the scenes, VoNR allows phones to stay connected to 5G continuously, which in turn enables 5G SA features like network slicing (for enterprise customers). VoNR is also necessary to enable the eventual phase-out of 4G LTE, although that is not expected any time soon.
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