GAO report emphasizes the need to track IoT growth to ensure spectrum challenges
are managed effectively. The stakeholders GAO spoke with identified two primary
spectrum-related challenges for the internet of things (IoT)—the availability of spectrum
and managing interference. Although not considered an immediate concern, Federal
Communications Commission (FCC) staff and some stakeholders noted that rapid
increases in IoT devices that use large amounts of spectrum—called highbandwidth
devices—could quickly overwhelm networks, as happened with smart phones.
Stakeholders and FCC staff also indicated that managing interference is becoming more
challenging as the number of IoT and other wireless devices grows, particularly in bands
that do not require a spectrum license.

See https://www.gao.gov/products/GAO-18-71

PDF of the Report:
https://www.gao.gov/assets/690/688450.pdf