The FCC recently adopted a Notice of Proposed Rulemaking that asks if it makes sense to give satellite providers access to unlicensed WiFi spectrum to support Direct-to-Device cellular service. The NPRM specifically looks at the use of 2.4 GHz and 5.8 GHz. The NPRM specifically rejected the idea of using 900 MHz for satellite service.
The FCC seems all-in on the idea of satellite cellular service and has taken a number of steps recently that favor this budding industry. However, Commissioner Anna Gomez, the only Democratic commissioner, voiced concern about how using this spectrum might affect the many devices that rely on WiFi spectrum today.
It seems like a valid concern. WiFi has turned out to be the most important and valuable spectrum we have. The whole broadband world seems to run off WiFi modems in homes and businesses. We have outdoor WiFi hotspots to provide outdoor broadband access. WISPs largely rely on WiFi spectrum to deliver fixed wireless broadband to rural homes.
It’s easy to understand why the FCC would consider this. The agency is facing huge demand for spectrum from multiple industries. Cellular carriers want more spectrum to get ready for the upcoming introduction of 6G. Cellular carriers also need to feed the rapidly growing FWA home broadband industry. Satellite companies have an insatiable demand for spectrum since they envision eventually launching hundreds of thousands of broadband satellites. And now, the satellite cellular companies want to blanket the Earth with competing networks to deliver outdoor cellular service, and the Direct-to-Device (D2D) carriers have already requested approval to launch tens of thousands of satellites to provide outdoor cellular service. There are more requests for spectrum than what is available, so the FCC seems willing to raid the public WiFi bands to support a new industry.
This is not the first time that the FCC has allowed others to share WiFi spectrum. A number of years ago, the FCC allowed cellular carriers to use WiFi spectrum in busy markets. I recall a report from university students in Chicago who had documented that cellular usage of WiFi had killed outdoor WiFi on their campus. I don’t know if cellular companies are still dipping into WiFi now that they have been able to get more spectrum, but this was a failed effort that favored the carriers over the normal users of WiFi.
What seems to be different today is that the FCC is unabashedly pro-satellite. They seem to be giving satellite companies everything they ask for. It’s not unusual for regulators to make it easy for new technologies – the FCC took a hands-off approach to the creation of the Internet. But there seems to be a lot of risk in allowing satellite companies to broadcast WiFi from space. This idea is clearly favoring satellite carriers over WISPs.
I talked to several wireless engineers about the proposed use of WiFi spectrum, and they all voiced concerns. The satellites would blanket the countryside with new WiFi spectrum. The engineers told me that it is impossible for this to be completely neutral for a WISP. Every outdoor receiver will perceive the new use of the spectrum as interference. They said there was no way to tell how bad this might be without trying it, and that sounds like a scary experiment if it turns out that the impact is severe. It’s easy for the FCC to allow a new use of spectrum, but it’s unlikely that it would be undone quickly if there is a problem.
This is out of character for the historically slow and cautious approach that the FCC has always taken with spectrum ideas. And that’s even more the case when we’re talking about WiFi spectrum, which has proven its value many times over.






