The FCC adopted rules permitting expanded use of 50 megahertz of mid-band spectrum in the 4.9 GHz (4940-4990 MHz) band that is currently underused.
Under the new rules, states are allowed to lease this spectrum to third parties to boost wireless broadband, improve critical infrastructure monitoring, and facilitate public safety use cases. This will allow individual states to use the spectrum to best meet their unique needs.
In the 18 years since the FCC designated the 4.9 GHz band for public safety use, only about 3.5% of all potential licensees have taken advantage of this spectrum opportunity, and this spectrum remains largely unused outside major metropolitan areas.
http://www.fcc.gov