During the discovery and connectivity process, client and AP stations exchange information about
their supported data rates. After the association, how do client and AP stations select the
supported data rate that will be used to send an 802.11 data frame?
During the association, the client and AP agree to use the same transmit rate, but either station
can request a change at any time after the association.
The client and AP each choose the optimal data rate to use independently of one another,
based on their own experience of the RF link.
The client and AP may use different transmit rates, but the AP determines the data rate that will
be used by each client station in the BSS.
The client and AP may use different transmit rates, but the client determines the data rate that it
will use and the data rate that the AP will use when communicating to the client.
The client and AP may use a different transmit rates, but the transmit rate is determined by the
peer station, based on the peer’s experience of the RF link.