automatic rate adaptation

Jouni Malinen jkmaline
Thu Jul 28 20:35:09 PDT 2005

On Thu, Jul 28, 2005 at 04:45:30PM +0200, Eduard GV wrote:

> I would like to know if prism cards implement any kind of rate
> adaptation algorithm (change modulation depending on channel
> conditions).
> If yes, could you explain the mechanism? is it carried out by the
> firmware or by hostap driver?

Yes, station firmware implements a rate control algorithm. In addition,
the driver can override the TX rate selection on packet-by-packet basis.
As an example, Host AP driver uses its own algorithm for the Master/Host
AP mode since firmware implementation is mainly for managed modes.

Jouni Malinen                                            PGP id EFC895FA

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