> 6GHz barely makes it through a concrete wall, so you're only receiving your own AP, so you have the whole bandwith mostly to yourself.
I'm no expert and only speak from personal experience. When the signal is weak, you don't have the whole bandwith, you only get low throughput. Ideally you would want a strong, high penetration signal (low frequency) and all users on separate channels. It's of course impossible in densely populated areas.
Whenever I have to deal with setting up WLAN in the office or at home, I hate the experience and I try to use wired connections wherever possible.
That’s not how RF works (generally). It’s about signal/noise ratio.
It gets really bad when signal is difficult to distinguish from noise because (for example!) everyone is talking at roughly the same power level. Think crowded bar with everyone yelling at each other.
When one is significantly louder than others, even if the others are not that quiet, it’s not a big deal unless at your ear/antenna they have the same loudness. Think concert with big speakers for the main act.
6ghz is better for many isolated networks right next to each other precisely because the others ‘voices’ lose power so quickly. You don’t have the competition for attention. Think ‘every couple in the bar gets their own booth’.
Wired connections are even better, because the amount of noise required to be unable to tell apart signal from noise is orders of magnitude higher - like ‘noisy welder right on top/EMP’ levels. Because the wires can actually be shielded. It’s like having your own hotel room.
I'm no expert and only speak from personal experience. When the signal is weak, you don't have the whole bandwith, you only get low throughput. Ideally you would want a strong, high penetration signal (low frequency) and all users on separate channels. It's of course impossible in densely populated areas.
Whenever I have to deal with setting up WLAN in the office or at home, I hate the experience and I try to use wired connections wherever possible.