Device authentication query
https://www.wi-fi.org/product-finder
1. MU-MIMO does not increase the maximum speed of the wireless
2. MU-MIMO requires both router and client support
3. When you do not have or only one client device supports MU-MIMO, it means that MU-MIMO does not exist
4. When all your clients support MU-MIMO, it is approximately equal to the absence of MU-MIMO (slightly better than case 3).
The more clients support MU-MIMO, the delay will be reduced, and the total downlink speed will be reduced. boost (theoretically)
5. There may be compatibility issues and performance degradation due to the connection of devices with different chips that are not certified by wi-fi.
6. All mikrotik devices are not wifi certified
7. ubnt all devices are not mu-mimo certified
8. cisco seems to have mu-mimo certified for all his devices
9. All Apple Huawei oppo vivo phones are not mu-mimo certified
Xiaomi only has mix 2 and note 3 certified by mu-mimo
10. mu-mimo must all work under 5G
11. MU-MIMO only supports up to 4 clients, of which the client combination supports up to 8 antennas. For example, an AP can connect with 1+1, 2+2, 1+2+2+1, 2+2+2+2, 1+3+2+1 (the number represents the number of antennas, and one number represents a mobile phone terminal), as long as the number of digits is less than 4, and less than 8.
Cisco Documentation
https://www.cisco.com/c/dam/global/zh_cn/products/products_netsol/wireless/pdf/802-11ac_qa.pdf
Reference article
https://baijiahao.baidu.com/s?id=1585925332265725307