Method and device for managing channel matrix

A device for managing a Digital Subscriber Line (DSL) channel matrix, comprising:

• a storage unit configured to store one or more history records of channel information of one or more users;
• a channel matrix unit configured to store the DSL channel matrix comprising channel information of one or more current logged on users;
• an obtaining unit configured to obtain logging information about whether a user logs on or logs off and configured to send an indication to a management unit indicating that the user logs on when the user logs on, or send an indication to the management unit indicating that the user logs off when the user logs off;
• and
• the management unit configured to add a history record of channel information of the user to the DSL channel matrix from the storage unit according to the indication indicating that the user logs on, and record channel information of the user in the DSL channel matrix into the storage unit and delete channel information of the user from the DSL channel matrix according to the indication indicating that the user logs off.

A Digital Subscriber Line Access Multiplexer comprising:

• an obtaining unit configured to obtain logging information about whether a user logs on or logs off;
• a notification unit configured to send an indication to a management unit indicating that the user logs on when the user logs on, or send an indication to the management unit indicating that the user logs off when the user logs off;
• and
• the management unit configured to add a history record of channel information of the user to a channel matrix according to the indication indicating that the user logs on, record channel information of the user in the channel matrix, and delete current channel information of the user from the channel matrix according to the indication indicating that the user logs off.

A method for eliminating a crosstalk, comprising:

• obtaining logging information about whether a user logs on or logs off;
• adding a history record of channel information of the user to a channel matrix when the user logs on;
• recording current channel information of the user in the channel matrix and deleting the current channel information of the user from the channel matrix when the user logs off;
• and
• eliminating the crosstalk on a channel of the user according to the channel matrix.