5G NR is equivalent to how the mobile communications industry has used LTE to describe 4G technology or UMTS to describe 3G technology.
5G NR introduces a flexible air interface to strengthen various types of services expected with 5G. 5G NR deployments are planned predominantly in the 3.5 GHz and 28 to 29 GHz frequency ranges. Both frequency ranges are new to the cellular network and require changes in radio access techniques and network architecture.
Massive MIMO (mMIMO) with beamforming will be used to achieve higher network capacity and higher data throughputs in these new frequency bands. Using these technologies, however, changes the radio access from cell coverage to beam coverage, representing a significant change from 4G Radio Access Networks (RANs).
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