Method and apparatus for controlling DSL line transmission power

摘要

A method for controlling DSL transmission power includes: determining a group to which a line belongs, and selecting a representative line from each group to form a line model; obtaining a crosstalk model of the line model; obtaining Transmit Power Spectrum Density (TxPSD) of each representative line in the line model according to the crosstalk model, and converting the TxPSD into a spectrum control parameter; and enhancing the line rate according to the spectrum control parameter. An apparatus for controlling DSL transmission power is also disclosed. Through the method, the transmission power of the band that incurs serious line crosstalk is restricted, and the line that incurs serious crosstalk can achieve higher transmission rates. Therefore, the adverse impact from the crosstalk between xDSL lines is reduced, and the line works in the optimum state.

主权项

1. A method for controlling Digital Subscriber Line (DSL) transmission power, comprising:
determining, by a spectrum maintenance center, a group to which a line belongs, and selecting a representative line from each group to form a line model; obtaining a crosstalk model of the line model; obtaining Transmit Power Spectrum Density (TxPSD) of each representative line in the line model according to the crosstalk model; converting the TxPSD into a spectrum control parameter; and adjusting a line rate according to the spectrum control parameter; wherein the step of converting the TxPSD into the spectrum control parameter comprises: converting the TxPSD into the spectrum control parameter that is capable of controlling the TxPSD of the representative line, wherein the spectrum control parameter comprises a power spectrum density mask (PSDMASK), and the PSDMASK is a sum of the TxPSD and a specific regulating amount.