DARPA is betting on AI to bring the next generation of wireless devices online

Traditionally, so-called radio spectrum hasn't been allocated in the most efficient way. The bands are then parceled out to different commercial and government entities for their exclusive use. While the process helps services avoid interference with one another, whoever holds the rights to a bit of spectrum rarely uses all of it 100% of the time. As a result, a large fraction of the allocated frequencies end up unused at any given moment.