I have a couple of questions that are confusing me:
1- Can a 4x4 access point serve four 1x1 clients at the same time or there are other constraints?
2- When they say the AP is 4x4:4 and it has four streams, what makes an AP physically have four streams and how it can serve four clients at the same time with the same antenna
3- MU-Mimo is only on the 5 GHz band?
Thanks in advance
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The sooner AP vendors concentrate on the 802.11ad standard (60 GHz) the better . . . .
Lots of small low powered APs, enough bandwidth to allow for separate backhaul, and no competition for spectrum (for now). I hear that developments are going well in Korea. I volunteer to be an alpha tester for Meraki (they have my address)
You may need to revise your understanding of what is possible - see this 4 year old paper - https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0167447
Korea is even working on 802.11ad-based radar . . .
Ever since I first started using WiFi, concurrently in NYC, London and Munich I avoided trying to propagate WiFi through walls. Having strong energy conservation proclivities, I had learned the benefits of foil lined wall board, so WiFi was never going to make it. Lots of houses in the US do not provide the same problems as they do in the rest of the world (NYC is only in the US as far as the post codes are concerned 🤣, some of those Manhattan apartment houses are solid). If I need WiFi in another room, I put a wired AP in that space. In the long run this is more reliable.