This document discusses spectrum requirements for mobile broadband (MBB) through 2020 and beyond. It notes that 400-1000 MHz of additional spectrum will be needed by 2020 to support the expected growth in mobile subscriptions, traffic, and new technologies. Charts show projections for growth in subscriptions, traffic, devices and technologies through 2020. New spectrum is needed in ranges from 470-6425 MHz to support 5G networks and the expected 10-100x increase in connected devices. Licensed, shared and unlicensed spectrum are discussed as options to support new applications while protecting incumbent users.