On 26.11.2009 18:32 Gábor Stefanik wrote: > Why not instead allow setting ACK timeout directly, e.g. in > milliseconds? (Similar to how signal strength is almost always > returned in dBm, even though the devices themselves use all kinds of > units.) Because the timeout does not depend on the distance only, the calculation involves at least the transmit duration of an ACK frame, and sometimes more, depending on the hardware (in one of them I saw they added DIFS to the timeout, forgot which one). And on Atheros hardware there are three values that depend on link distance: ACK timeout, CTS timeout and slot time. So the equivalent of dBm here is the link distance, not ACK timeout. Lukas Turek
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