WiFi already uses it, but will share it?
If you’ve been to a large event recently, you’ve probably been reminded of what happens when a large amount of wireless devices congregate in an area. Frequency bands get overwhelmed and your internet connection becomes unpredictable, at best. To solve this problem various bandwidths have been made available, trying to spread the traffic across the spectrum. The best practice has been to separate WiFi traffic and cellular traffic by assigning them different parts of the spectrum, but that may change.
Ofcom is proposing ways in which the band above 6GHz could be used simultaneously by WiFi and cellular signals. One idea is to design a MAC database that specifies where and when access is allowed by devices; WiFi on the 6GHz band for short range WAP for indoor setup and cellular signals when you’re out. They also propose to improve channel detection on WiFi devices to avoid collisions and perhaps introduce the same capability on cellphones.
The FCC has already opened up the entire upper 6GHz band to low-power Wi-Fi for indoor use, provided the device has an automatic frequency coordination system to avoid collisions with other equipment. There are many legacy devices that use the same bandwidth and will definitely not be smart enough to detect traffic.
It’s a challenge, and it needs to be solved now so that new devices have somewhere to broadcast, instead of trying to squeeze into already crowded frequencies.