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428 posts

Ultimate Geek


  #2525517 19-Jul-2020 10:36
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Batman:

 

MIMO only does MIMO if EVERY single device connected to that band is MIMO. if you have 99 MIMO devices and one is not MIMO it will not do MIMO

 

My impression is the same applies with WIFI-6 ...

 

 

That did not make sense to me, and I cant find any reference to it?

 

The downsides of MU-MIMO
There are also disadvantages to using wireless mesh systems and routers with MU-MIMO:
 It works only when using the 802.11ac wireless standard and the 5 GHz WiFi frequency. You cannot take advantage of it on the 2.4 GHz frequency and older standards like 802.11n. The 2.4 GHz frequency is stuck with using SU-MIMO.
 MU-MIMO increases only the download speed, not the upload speed.
 You need both a router with MU-MIMO and network devices with MU-MIMO to get faster downloads. When buying new computers, smartphones, and other gadgets, you need to make sure that they work with 802.11ac wireless networks and that they support MU-MIMO transfers.

 

How devices connect to wireless routers when using older standards (SU-MIMO or 1x1 MU-MIMO)
Wireless routers that do not offer support for MU-MIMO use the so-called SU-MIMO method for transmitting data over a wireless radio channel. SU-MIMO stands for Single-User Multiple Input Multiple Output, and it means that one wireless channel can send and receive data to and from a network client at a time. SU-MIMO is part of the 802.11n networking standard that was finalized and published in October 2009. All wireless routers with support for the final version of the 802.11n standard can use the SU-MIMO method for transmitting data. When using this approach, routers are good at sending and receiving data, but only in one direction, to one client at a time. If you had a wireless router with one antenna that is used for receiving and sending data, it could connect only to one network device at a time. Let's assume that you have three users, each with their device connected to the WiFi broadcast by the router. The router can send and receive data only to the first user. When it is done with the first user, it goes to the second user and then to the third.
SU-MIMO or 1x1 MU-MIMO wireless transfers
SU-MIMO or 1x1 MU-MIMO wireless transfers
The number of simultaneous data streams is limited by the minimum number of antennas in use. If your router has four antennas, in SU-MIMO, you can have up to four data streams simultaneously. For example, a wireless router that can transmit or receive on two antennas can handle two users simultaneously. A router with four antennas can handle four separate streams and up to four clients simultaneously. Since on many WiFi networks you have multiple wireless clients that are connected, each requesting access to their data stream, the router acts like a machine gun mounted to a merry-go-round. It rattles off bits of data very quickly to multiple devices in turn. Each device waits its turn to send and receive data, so when a new device connects, the line and the wait become longer. Therefore, the more devices you connect to a wireless router that is using SU-MIMO, the bigger the latency becomes and the less speed you get for each device.


27 posts

Geek


  #2526359 21-Jul-2020 09:28
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@ageorge

 

The new gaming PC reboots? or does it drop connection or router reboots? My experience with PC gaming is if upnp is enabled in the router then the ports do not need to be forwarded, and on the windows side of things all should have been configured when the game installed to get through the firewall. Games need about 1mbps up and about 5mbs down depending on the game. On my personal PC i notice that when a new build of windows comes out there is also a new driver for wifi from the MB manufacturer, last build change was about 3 weeks ago to Win10 build 2004. Also maybe try turning on WMM in the router (should be in with the QOS options). If the new PC is a Ryzen based system i would recommend updating all drivers from the MB manufactures website EXCEPT the chipset drivers which should be downloaded from AMD.com 

 

 


 
 
 
 




428 posts

Ultimate Geek


  #2526363 21-Jul-2020 09:37
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My daughter #2 says the router reboots. I have gotten both daughters to do a speed test in their separate rooms and my phone performs far better than both of their new PC (one laptop, the other dedicated gaming PC).

 

The girls have been complaining more since I installed a Tenda AC11 router, much stronger wifi signal, but they say reboots indiscriminately, in place of the Netcomm NFV18ACV, so yesterday reverted back to the Netcomm.

 

Very odd carry-on. I would have expected their PC wireless to be superior to my Chinese Redmi phone any day.


27 posts

Geek


  #2526368 21-Jul-2020 10:05
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ageorge:

 

My daughter #2 says the router reboots. I have gotten both daughters to do a speed test in their separate rooms and my phone performs far better than both of their new PC (one laptop, the other dedicated gaming PC).

 

The girls have been complaining more since I installed a Tenda AC11 router, much stronger wifi signal, but they say reboots indiscriminately, in place of the Netcomm NFV18ACV, so yesterday reverted back to the Netcomm.

 

Very odd carry-on. I would have expected their PC wireless to be superior to my Chinese Redmi phone any day.

 

 

 

 

Ahh in that case you might have to wait for a firmware update for the router.


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