Now, the largest user of spectrum, the Department of Defense (DoD), has put out a Request for Information (RFI) that seems to propose that at least some of the spectrum traditionally used by the military could be shared for a fifth generation (5G) wireless network. The DoD cites a component of 5G technology called dynamic spectrum sharing (DSS) as the vehicle to accomplish this. The DoD concept for spectrum sharing is the simple application of digital electronics. Such sharing is a good idea as 5G networks put even more pressure on the need for spectrum.
https://www.brookings.edu/blog/techtank/2020/10/05/is-spectrum-shortage-a-thing-of-the-past/
