Configuring Transmission Signals

• US 20070217492A1
• Filed: 03/15/2007
• Published: 09/20/2007
• Est. Priority Date: 03/15/2006
• Status: Active Grant

• Current Assignee: Ikanos Communications Incorporated (Qualcomm, Inc.)
• Original Assignee: Conexant Systems Incorporated (Synaptics Incorporated)
• Inventors: Das, Kaushik, Cox, Ross Mitchell, Pise, Mihir
• Granted Patent: US 8,031,759 B2
• Time in Patent Office: Days
• US Class Current: 375/222
• CPC Class Codes: H04L 1/20 using signal quality detector
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 52/267 taking into account the information rate

Abstract

Included are embodiments for reducing interference in a communications network. At least one embodiment of a method includes receiving data related to an updated Power Spectral Density (PSD) mask and processing a first Seamless Rate Adaptation (SRA) request. Some embodiments include processing a second Seamless Rate Adaptation request and implementing the updated Power Spectral Density mask.

Claims

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

receiving data related to an updated Power Spectral Density (PSD) mask;

processing a first Seamless Rate Adaptation (SRA) request;

processing a second Seamless Rate Adaptation request; and

implementing the updated Power Spectral Density mask.

2. The method of claim 1, wherein receiving data related to the updated PSD includes receiving at least one of the following:

a target Signal to Noise Ratio Margin (SNRM) and the updated PSD mask.

3. The method of claim 1, further comprising:

receiving an SRA request from a Central Office (CO); and

determining whether the received SRA request is a normal SRA request.

4. The method of claim 1, further comprising, in response to determining that the received SRA request includes a normal SRA request, processing a normal SRA request.

5. The method of claim 1, further comprising:

receiving an SRA request from a Central Office (CO); and

determining whether the received SRA request includes a request to update a PSD mask.

6. The method of claim 1, wherein processing the first 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 a Signal to Noise Ratio Margin (SNRM), the 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 processing component configured to process a first Seamless Rate Adaptation (SRA) request;

a second processing component configured to process a second Seamless Rate Adaptation request; and

an implementing component configured to implement the updated Power Spectral Density 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 Signal to Noise Ratio Margin (SNRM) and the updated PSD mask.

10. The system of claim 8, further comprising:

a second receiving component configured to receive an SRA request from a Central Office (CO); and

a first determining component configured to determine whether the received SRA request is a normal SRA request.

11. The system of claim 8, further comprising, a third processing component configured to, in response to the determination that the received SRA request includes a normal SRA request, process a normal SRA request.

12. The system of claim 8, further comprising:

a third receiving component configured to receive an SRA request from a Central Office (CO); and

a second determining component configured to determine whether the received SRA request 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 a Signal to Noise Ratio Margin (SNRM), the 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 processing a first Seamless Rate Adaptation (SRA) request;

means for processing a second Seamless Rate Adaptation request; and

means for implementing the updated Power Spectral Density 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 Signal to Noise Ratio Margin (SNRM) and the updated PSD mask.

17. The system of claim 15, further comprising:

means for receiving an SRA request from a Central Office (CO); and

means for determining whether the received SRA request is a normal SRA request.

18. The system of claim 15, further comprising, means for, in response to the determination that the received SRA request includes a normal SRA request, processing a normal SRA request.

19. The system of claim 15, further comprising:

means for receiving an SRA request from a Central Office (CO); and

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

20. The system of claim 15, wherein the means for processing a first 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 a Signal to Noise Ratio Margin (SNRM), the 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.