Patent ID: 8908834

Claim:
A method for reducing digital subscriber line interference, the method comprising: identifying at least one legacy digital subscriber line in a digital subscriber line set, wherein the digital subscriber line set comprises at least one vectored digital subscriber line and the legacy digital subscriber line; obtaining a target power spectral density mask value of the legacy digital subscriber line, wherein the target power spectral density mask value is a reference value for reducing interference of the legacy digital subscriber line on the vectored digital subscriber line; and reducing power spectral density of a transmit signal on the legacy digital subscriber line according to the target power spectral density mask value; wherein obtaining the target power spectral density mask value of the legacy digital subscriber line comprises one of following two modes: estimating the target power spectral density mask value of the legacy digital subscriber line according to a digital subscriber line interference model; and calculating the target power spectral density mask value of the legacy digital subscriber line by obtaining a channel parameter of the legacy digital subscriber line.