<p>Disclosed are a method and system for correcting a delay difference, capable of measuring a delay difference between different APs to obtain delay difference calibration information, so as to adjust data sending of the different APs accordingly. The technology of correcting a delay difference of the present invention can solve the problem of a delay difference caused by an accumulation effect of timing synchronization deviations between APs and channel delay differences, thereby improving the system performance and spectral efficiency.</p>
