Qualcomm Technologies has helped make carrier aggregation mainstream, with global proliferation, which benefits the entire mobile ecosystem — Operators, App developers, and OEMs — by delivering higher data rates, improved capacity, and the ability to use spectrum fragments.
Carrier aggregation offers successively higher peak data rates as well as better broadband experience across the coverage area.
The date rates scale with the amount of spectrum allowing 3GPP Rel 10 to support up to 5 carriers with up to 100 MHz of spectrum and commercial solutions to support up to 3 carriers with peak data rates up to 450 Mbps (Cat 5).
https://www.qualcomm.com/invention/technologies/lte
https://www.qualcomm.com/invention/technologies/lte/lte-carrier-aggregation