“A truly ubiquitous, fast mobile broadband network needs both licensed and unlicensed spectrum. Licensed spectrum gives operators manageability and predictability, which enables them to safely invest in a top-down fashion the tens of billions of dollars in the infrastructure necessary for coverage. Given the volume of traffic carried on these networks—traffic that can’t be off-loaded—these cellular networks will need continually greater capacity.
Meanwhile, unlicensed spectrum gives millions of entities the flexibility to invest in a bottom-up manner to provide localized high capacity. The two approaches are symbiotic and mutually interdependent—with no foreseeable changes. Both will benefit from technology advances and both will need more spectrum over time.”