Granted Patent B2

US 8,031,759 · App. 11/686,420 · Granted Oct 4, 2011

Abstract

Claims (66)

1. A method for reducing interference in a communications network, comprising:

receiving data related to an updated power spectral density (PSD) mask;

determining whether the data includes a dynamic spectrum management (DSM) seamless rate adaptation (SRA) request;

in response to determining that the data includes the DSM SRA request, processing the DSM SRA request, including computing a bit loading for a target signal to noise ratio margin (SNRM);

triggering transmission of a second SRA request;

in response to receiving the second SRA request, processing the second SRA request; and

implementing the updated PSD mask.

2. The method of claim 1 , wherein receiving the data includes receiving at least one of the following: a target SNRM and the updated PSD mask.

3. The method of claim 1 , further comprising:

receiving the data from a central office (CO); and

determining whether the data includes a normal SRA request.

4. The method of claim 3 , further comprising, in response to determining that the data includes a normal SRA request, processing the normal SRA request.

5. The method of claim 1 , further comprising:

receiving the data from a central office (CO); and

determining whether the data includes a request to update a PSD mask.

6. The method of claim 1 , wherein processing the first DSM SRA request comprises:

starting a counter;

calculating a projected received signal to noise ratio (SNR);

calculating a first bit-loading based on the calculated SNR and an actual SNRM, the actual SNRM being incremented to a value arbitrarily higher than the target SNRM; and

at expiration of the counter, computing a second bit-loading for a target SNRM and an estimated actual received SNR.

7. The method of claim 1 , further comprising:

starting a timer; and

preventing the processing of the second SRA until expiration of the timer.

8. A system for reducing interference in a communications network, comprising:

a first receiving component configured to receive data related to an updated power spectral density (PSD) mask;

a first determining component configured to determine whether the data includes a dynamic spectrum management seamless rate adaptation (SRA) request;

a first processing component configured to, in response to determining that the data includes the DSM SRA request, process the DSM SRA request, including computing a bit loading for a target signal to noise ratio margin (SNRM);

a triggering component configured to trigger transmission of a second SRA request;

a second processing component configured to, in response to receiving the second SRA request, process the second SRA request; and

an implementing component configured to implement the updated PSD mask.

9. The system of claim 8 , wherein the first receiving component is further configured to receive at least one of the following: a target SNRM and the updated PSD mask.

10. The system of claim 8 , further comprising:

a second receiving component configured to receive the data from a central office (CO); and

a second determining component configured to determine whether the data includes a normal SRA request.

11. The system of claim 10 , further comprising, a third processing component configured to, in response to the determination that the data includes the normal SRA request, process the normal SRA request.

12. The system of claim 8 , further comprising:

a third receiving component configured to receive the data from a central office (CO); and

a third determining component configured to determine whether the data includes a request to update a PSD mask.

13. The system of claim 8 , wherein first processing component is further configured to:

start a counter;

calculate a projected received signal to noise ratio (SNR);

calculate a first bit-loading based on the calculated SNR and an actual SNRM, the actual SNRM being incremented to a value arbitrarily higher than the target SNRM; and

at expiration of the counter, compute a second bit-loading for a target SNRM and an estimated actual received SNR.

14. The system of claim 8 , further comprising:

a starting component configured to start a timer; and

a preventing component configured to prevent processing of the second SRA until expiration of the timer.

15. A system for reducing interference in a communications network, comprising:

means for receiving data related to an updated power spectral density (PSD) mask;

means for determining whether the data includes a dynamic spectrum management seamless rate adaptation (SRA) request;

means for, in response to determining that the data includes the DSM SRA request, processing the DSM SRA request, including computing a bit loading for a target signal to noise ratio margin (SNRM);

means for triggering transmission of a second SRA request;

means for, in response to receiving the second SRA request, processing a second SRA request; and

means for implementing the updated PSD mask.

16. The system of claim 15 , wherein the means for receiving data related to the PSD is further configured to receive at least one of the following: a target SNRM and the updated PSD mask.

17. The system of claim 15 , further comprising:

means for receiving the data from a central office (CO); and

means for determining whether the data includes a normal SRA request.

18. The system of claim 17 , further comprising, means for, in response to the determination that the data includes the normal SRA request, processing the normal SRA request.

19. The system of claim 15 , further comprising:

means for receiving the data from a central office (CO); and

means for determining whether the data includes a request to update a PSD mask.

20. The system of claim 15 , wherein the means for processing the DSM SRA request is further configured to:

start a counter;

calculate a projected received signal to noise ratio (SNR);

calculate a first bit-loading based on the calculated SNR and an actual SNRM, the actual SNRM being incremented to a value arbitrarily higher than the target SNRM; and

at expiration of the counter, compute a second bit-loading for a target SNRM and an estimated actual received SNR.

Assignments (8)