Granted Patent B2

US 7,711,530 · App. 11/945,210 · Granted May 4, 2010

Abstract

Claims (50)

1. A method of generating a model of a Digital Subscriber Line (DSL) system, the DSL system model comprising a set of one or more model parameter values for one or more model parameters, the method comprising:

iteratively prompting at least one line of the DSL system to generate a plurality of prompted operational data sets, each prompted operational data set showing operating performance of the at least one line based on one of a plurality of different data conditions, wherein each prompting of the at least one line to generate prompted operational data comprises:

sending an operating mode instruction signal to set an operational mode of a DSL transceiver; and

operating the DSL transceiver using the set operational mode to transmit data over the at least one line and generate a prompted operational data set for a particular data condition;

collecting the prompted operational data sets;

generating one or more model parameter values based on the collected prompted operational data; and

recording or storing one or more of the generated model parameter values in a memory.

2. The method of claim 1 , wherein prompting the DSL system to generate prompted operational data further comprises selecting the model parameters;

further wherein setting an operational mode for the DSL system is based on one or more of the selected model parameters; and

wherein using at least one of the collected prompted operational data to update one or more model parameter values comprises comparing the collected prompted operational data to one or more previous model parameter values.

3. The method of claim 2 , wherein the updated model parameter values are based on the comparison of the collected prompted operational data to the one or more previous model parameter values.

4. The method of claim 1 , wherein the prompted operational data further comprises time-relative performance-characterizing operational data indicative of a cause-effect relationship between the at least one line and another line of the DSL system.

5. The method of claim 1 , further comprising one or more of the following:

recommending operational modes for the DSL system based on the DSL system model; or

diagnosing the DSL system using the DSL system model.

6. The method of claim 1 , wherein setting the operational mode for the at least one line comprises setting one or more operational parameters of the transceiver.

7. The method of claim 1 , wherein the model parameter value set comprises at least one of the following DSL parameter types:

line length;

number of bridged taps;

position of each bridged tap;

channel insertion-loss transfer function;

power level;

PSD level;

bit error rate;

time-averaged versions of errors;

errored seconds;

code violations;

code settings;

PSD shape; or

potential noises.

8. The method of claim 1 , wherein setting the operational mode for the transceiver comprises setting an operational frequency band.

9. The method of claim 8 , wherein the collected prompted operational comprises one or more points showing Hlog for a set operational frequency band.

10. The method of claim 8 , wherein the collected operational data sets comprise a plurality of attenuation values, each of the plurality corresponding to a different frequency carrier mask, wherein iteratively prompting the at least one line of the DSL system to generate a plurality of prompted operational data sets further comprises:

setting a data-bearing frequency carrier mask with the operating mode instruction signal;

transmitting data over the at least one line by operating the DSL transceiver using one or more frequencies in the carrier mask; and

receiving the attenuation value from the DSL transceiver for the transmitted data;

wherein generating one or more of the model parameter values further comprises generating a function approximating the plurality of received attenuation values as dependent variables of a bit loaded frequency, f, in the carrier mask; and wherein the generated model parameter values stored in a memory comprise the generated function as an estimate of the an Hlog function.

11. A DSL system estimator for generating a model of a DSL system, the DSL system model comprising a set of one or more model parameter values for one or more model parameters, the estimator comprising:

a signal generator configured to send an operating mode instruction signal to set an operational mode of a DSL transceiver of at least one line in the DSL system;

collecting means coupled to the DSL system and comprising a hardware module configured to collect prompted operational data generated by the at least on DSL line; and

estimating means coupled to the collecting means and comprising a hardware module configured to generate one or more DSL system model parameter values based on the collected prompted operational data and farther configured to record or store one or more generated model parameter values in a memory;

wherein the estimating means is configured to iteratively prompt the DSL transceiver to transmit data using one of a plurality of operational modes set by the signal generator to generate a plurality of prompted operational data sets, each of the prompted operational data sets showing operating performance of the at least one line for a particular data condition associated with the operational mode set by the signal generator.

12. The DSL system estimator of claim 11 , wherein the hardware module of the collecting means and the hardware module of the estimating means are the same hardware module.

13. The DSL system estimator of claim 11 , wherein the hardware module of the collecting means and the hardware module of the estimating means are distinct hardware modules.

14. A computer readable storage media having instructions stored thereon, which when executed by a processing system, cause the system to execute a method for generating a model of a DSL system having at least one DSL line, the DSL system model comprising a set of one or more model parameter values for one or more model parameters, the method comprising:

iteratively prompting the at least one line of the DSL system to generate a plurality of prompted operational data sets, each operational data set showing operating performance of the at least one line based on one of a plurality of different data conditions, wherein each prompting of the at least one line to generate prompted operational data comprises:

sending an operating mode instruction to set an operational mode of a DSL transceiver ; and operating the DSL transceiver using the set operational mode to transmit data over the at least one line and generate a prompted operational data set for a particular data condition;

collecting the prompted operational data sets;

generating one or more model parameter values based on the collected prompted operational data; and

recording or storing one or more of the generated model parameter values in a memory.

Assignments (10)