There is an interesting spectrum battle going on between cell carriers and satellite companies. The heart of the contention is spectrum in the Upper Microwave Flexible Use Service (UMFUS) bands, specifically the 24 GHz (GigaHertz), 28 GHz, upper 37 GHz, 39 GHz, 47 GHz, and 50 GHz bands. These frequency bands are generally referred to as millimeter wave spectrum.
Satellite companies use some of this spectrum today via a shared arrangement with cellular companies that have purchased some of this spectrum in FCC auctions. Satellite companies are seeking greater use of this spectrum to communicate between satellites and ground stations, which is a growing concern as the number of different satellite providers and the overall number of satellites in the sky increases. Satellite companies want access to more shared spectrum using a process the FCC calls ‘light licensing’, which is a process to register new ground stations with relatively little paperwork.
The big cellular carriers don’t want any expanded use of light licensing. Like many spectrum disputes, at the heart of the issue is money. AT&T, T-Mobile, and Verizon each spent roughly $2 billion in millimeter wave spectrum auctions, and these companies would like to require satellite companies to come to them to negotiate individual site licenses for the spectrum, presumably as a way to recover some of their investment in the spectrum.
To some degree, at least so far, the millimeter wave spectrum has been a bust for cell companies. Millimeter wave spectrum comprises very short waves that can deliver immense amounts of data. You might remember the ads on TV in 2019 when Verizon touted gigabit speeds on the new Samsung Galaxy S10 smartphone. It was impossible that year to watch a sporting event without seeing these ads multiple times.
At the time, Verizon had deployed millimeter wave spectrum in a few downtown areas of a handful of cities in the hope that faster speeds would lure customers to buy a more expensive subscription to get access to faster cellphone speeds. The trial was largely a bust since it turned out that millimeter wave spectrum is blocked by everything in the outdoor cellular environment, even the body of a cellular customer. But the real issue was that the public had little appetite to pay for faster cellular speeds and still doesn’t today. Cellphones don’t run apps that need superfast downloads, and existing 4G networks at the time easily delivered video streams.
Cellular carriers argue that letting satellite companies use the spectrum for more ground stations diminishes their licenses. Satellite companies counter by pointing out that there are almost no outdoor uses of the spectrum today, and most applications are being used to wirelessly move a lot of data indoors.
This will change to some extent now that Verizon has purchased Starry, which is the only carrier to make extensive use of millimeter wave spectrum outdoors. It seems likely that Verizon plans to expand the Starry model and technology, which is only used today in a few markets.
This fight is a good example of the spectrum battles we are going to see over the next few years that tend to pit large, important constituencies against each other. I expect a lot of loud spectrum battles as the FCC tries to find 800 MHz of mid-range cellular spectrum for auction – almost all spectrum in this range is already used by somebody other than the cell carriers.
The FCC is forced to choose, in this case, between cell carriers and satellite companies. My bet is that the satellite companies will be allowed to use more spectrum under the light licensing rules. This is partly because they currently seem to have a favored status at this FCC, but also because the cell carriers have never utilized the millimeter spectrum in any meaningful way. This also might be a precursor to a future where the FCC decides that multiple parties can more easily share spectrum.






