Correct. BLE is sane, 5ghz WiFi is insane with > 100 data channels and all of them can beacon. I really don’t understand why the WiFi alliance doesn’t learn from BT here. Maybe there are technical reasons like WiFi is always becoming so they need more channels to spread over in an urban environment? Still seems a bit silly.
This is fascinating to me. I used Cisco wireless for several years and read the documentation enough to know about why 802.11k sped up roaming so much, but never put together that requiring a scan across the entire spectrum is an inherent design flaw.
The complete lack of network-driven roaming, which AFAIK is still missing from wifi 6/E, must be frustrating to large-scale network designers and admins.
Also frustrating when we were doing indoor WiFi positioning at Apple. Scanning 2.4ghz - super fast. Scanning 5ghz takes forever. You need repeated scans as quickly as possible to converge your position (at least the way we were doing it at that time)
