Method and system for robust digital subscriber loop communication

A method for configuring a digital subscriber loop (DSL) communication system, the method comprising:

• receiving a minimum bit rate (b_min) required for the operation of a line;
• receiving a maximum level of crosstalk noise (N_max) that the line is able to tolerate without service interruption;
• receiving an intermediate signal-to-noise ratio (SNR) margin (M_int) that allows the line to remain operational despite SNR reductions that are not related to crosstalk noise;
• calculating a first maximum bit rate (b_full) that the line supports at M_int in the presence of N_max;
• training a DSL modem transmitter to transmit information at the minimum bit rate (b_min) and at the intermediate SNR margin (M_int) if b_full is greater than or equal to B_min.

A digital subscriber loop (DSL) communication system that comprises a processing unit and a first set of DSL modems,

• wherein the first set of DSL modems are coupled over multiple lines to a second set of DSL modems;
• and
• wherein the processing unit is configured to:
• train at least one anchor DSL modem transmitter of the first set of DSL modems to transmit information over at least one anchor line of a plurality of anchor lines at an anchor bit rate that is determined based on an allowable tolerable noise level and a minimum allowable signal-to-noise ratio (SNR) margin;
• and
• train one or more other DSL modem transmitter to transmit information over one or more other line at a bit rate that is determined based on a current noise level and a target SNR margin,
• wherein the target SNR margin is higher than the minimum allowable SNR margin;
• and
• wherein after being trained, at least one trained DSL modem transmitter of the first set of DSL modems is configured to transmit information to at least one DSL modem of the second set of DSL modems, wherein the at least one anchor link and the one or more other link belong to a bonded link.

A digital subscriber loop (DSL) communication system that comprises a processing unit and a first DSL modem that is coupled over a line to a second DSL modem,

• wherein the processing unit is configured to:
• receive a minimum bit rate (b_min) required for the operation of a line;
• receive a maximum level of crosstalk noise (N_max) that the line should be able to tolerate without service interruption;
• receive an intermediate signal-to-noise ratio (SNR) margin (M_int) that allows the line to remain operational despite SNR reductions that are not related to crosstalk noise;
• calculate a first maximum bit rate (b_full) that the line should support at M_int in the presence of N_max;
• and
• train the first DSL modem to exchange information at the minimum bit rate (b_min) and at the intermediate SNR margin (M_int) if b_full is greater than or equal to b_min.

A method for configuring a digital subscriber loop (DSL) communication system, the method comprising:

• training at least one anchor DSL modem transmitter to transmit information over at least one anchor line at an anchor bit rate that is determined based on an allowable tolerable noise level and a minimum allowable signal-to-noise ratio (SNR) margin, if a current SNR margin falls below a threshold;
• training one or more DSL modem transmitter to transmit information over one or more other line at a bit rate that is determined based on a current noise level and a target SNR margin, if a current SNR margin is above said threshold, wherein the target SNR margin is higher than the minimum allowable SNR margin;
• and
• exchanging information by at least one of said trained DSL modems.

A digital subscriber loop (DSL) communication system that comprises a processing unit,

• wherein the processing unit is configured to:
• train at least one DSL modem transmitter to transmit information over at least one line at an anchor bit rate that is determined based on an allowable tolerable noise level and a minimum allowable signal-to-noise ratio (SNR) margin, if a current SNR margin is below a threshold;
• and
• train at least one DSL modem transmitter to transmit information over at least one other line at a bit rate that is determined based on a current noise level and a target SNR margin, if a current SNR margin is above said threshold, wherein the target SNR margin is higher than the minimum allowable SNR margin;
• and
• wherein at least two trained DSL modems of the DSL communication system are configured to exchange information.