In addition to brand-new revenue sources that should develop later in the 5G era, the immediate and practical value of 5G is to supply ever-growing capacity demands, even as 4G gets more efficient and other platforms come to commercial usage.
And 4G will continue to supply more bandwidth for the next five years, though at a declining incremental rate of increase after perhaps 2020, according to Michael Murphy, Nokia Networks CTO, North America.
The ability to aggregate Wi-Fi and unlicensed spectrum to mobile spectrum will add some bandwidth. So will 3.5 GHz spectrum, both licensed and unlicensed. But most of the new capacity will have to come from 5G, using a combination of techniques and new bandwidth.
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