I'm doing a lot of testing with various combinations of ht-basic-mcs and ht-supported-mcs.

In the forum someone says that it is better to set basic-mcs 0,1 and set supported-mcs 0,1,2,3 and others to reach the desired values ​​and stable.

Someone else says to set the same basic and supported values.

Can you give me some clarification to find a solution for optimizing a link on an area noisy?

cetalfio

"Basic Rates" are the rates that the communication between the station and the AP occur at. This is true for all 802.11 modes and the principal behind it is the same for all modes. The station and AP are communicating about how the rest of the data is going to be sent via the "basic rates". If they are not able to reliably talk on basic rate "X" then that must also mean that the data cannot be passed used that data rate so they lower their basic rate and try again. This will continue all the way down to 1. When you take away auto negotiation your're throwing a wrench into this process and you wind up with all sorts of problems in the real world that you don't see on your test best with perfect signals. It is true that if you have a failing wireless card or an OS version which is not stable that "locking" the rates could be advantage until the problem can be fixed. However, most people should use dynamic rate selection for 99% of scenarios out there.