Granted Patent B2

US 7,889,759 · App. 10/889,975 · Granted Feb 15, 2011

Abstract

Claims (161)

1. A method for determining a common bit-loading modulation scheme for communicating between a plurality of nodes in a broadband cable network (“BCN”), the method comprising:

transmitting a probe signal from a transmitting node within the plurality of nodes to a sub-plurality of receiving nodes within the plurality of nodes;

receiving a plurality of response signals from the sub-plurality of receiving nodes wherein each response signal includes a bit-loading modulation scheme determined by a corresponding receiving node; and

determining the common bit-loading modulation scheme from the received plurality of response signals;

receiving the probe signal at one receiving node of the plurality of receiving nodes through a channel path of transmission;

determining the transmission characteristics of the channel path at the one receiving node; and

transmitting a response signal from the one receiving node to the transmitting node,

wherein the transmission characteristics of the channel path are determined by measuring the signal-to-noise (“SNR”) characteristics of the received probe signal at the one receiving node and

wherein determining a common bit-loading modulation scheme includes:

comparing a plurality of bit-loading modulation schemes from the corresponding received plurality of response signals; and

determining the common bit-loading modulation scheme in response to comparing the plurality of bit-loaded modulation schemes.

2. A method for determining a common bit-loading modulation scheme for communicating between a plurality of nodes in a broadband cable network (“BCN”), the method comprising:

transmitting a probe signal from a transmitting node within the plurality of nodes to a sub-plurality of receiving nodes within the plurality of nodes;

receiving a plurality of response signals from the sub-plurality of receiving nodes wherein each response signal includes a bit-loading modulation scheme determined by a corresponding receiving node;

determining the common bit-loading modulation scheme from the received plurality of response signals;

receiving the probe signal at one receiving node of the plurality of receiving nodes through a channel path of transmission;

determining the transmission characteristics of the channel path at the one receiving node;

transmitting a response signal from the one receiving node to the transmitting node, wherein the transmission characteristics of the channel path are determined by measuring the bit-error rate (“BER”) characteristics of the received probe signal at the one receiving node and

generating the response signal, wherein the response signal utilizes a bit-loading modulation scheme that is generated by the one receiving node in response to determining the transmission characteristics of the channel path,

wherein determining a common bit-loading modulation scheme includes:

comparing a plurality of bit-loading modulation schemes from the corresponding received plurality of response signals; and

determining the common bit-loading modulation scheme in response to comparing the plurality of bit-loaded modulation schemes.

3. A method for determining a common bit-loading modulation scheme for communicating between a plurality of nodes in a broadband cable network (“BCN”), the method comprising:

transmitting a probe signal from a transmitting node within the plurality of nodes to a sub-plurality of receiving nodes within the plurality of nodes;

receiving a plurality of response signals from the sub-plurality of receiving nodes wherein each response signal includes a bit-loading modulation scheme determined by a corresponding receiving node; and

determining the common bit-loading modulation scheme from the received plurality of response signals;

receiving the probe signal at one receiving node of the plurality of receiving nodes through a channel path of transmission;

determining the transmission characteristics of the channel path at the one receiving node; and

transmitting a response signal from the one receiving node to the transmitting node,

wherein the transmission characteristics of the channel path are determined by measuring the signal-to-noise (“SNR”) characteristics of the received probe signal at the one receiving node,

wherein the transmission characteristics of the channel path are determined by measuring the product-error rate (“PER”) characteristics of the received probe signal at the one receiving node, and

wherein determining a common bit-loading modulation scheme includes;

comparing a plurality of bit-loading modulation schemes from the corresponding received plurality of response signals; and

determining the common bit-loading modulation scheme in response to comparing the plurality of bit-loaded modulation schemes.

4. A non-transitory computer-readable medium having software for determining a common bit-loading modulation scheme for communicating between a plurality of nodes in a broadband cable network (“BCN”), the non-transitory computer-readable medium comprising:

logic configured for transmitting a probe signal from a transmitting node within the plurality of nodes to a sub-plurality of receiving nodes within the plurality of nodes;

logic configured for receiving a plurality of response signals from the sub-plurality of receiving nodes wherein each response signal includes a bit-loading modulation scheme determined by a corresponding receiving node;

logic configured for determining the common bit-loading modulation scheme from the received plurality of response signals,

logic configured for receiving the probe signal at one receiving node of the plurality of receiving nodes through a channel path of transmission;

logic configured for determining the transmission characteristics of the channel path at the one receiving node;

logic configured for transmitting a response signal from the one receiving node to the transmitting node; and

logic configured for generating the response signal, wherein the response signal utilizes a bit-loading modulation scheme that is generated by the one receiving node in response to determining the transmission characteristics of the channel path;

wherein the transmission characteristics of the channel path are determined by logic configured for measuring the signal-to-noise (“SNR”) characteristics of the received probe signal at the one receiving node, and

wherein the logic configured for determining a common bit-loading modulation scheme includes:

logic configured for comparing a plurality of bit-loading modulation schemes from the corresponding received plurality of response signals; and

logic configured for determining the common bit-loading modulation scheme in response to comparing the plurality of bit-loaded modulation schemes.

5. A non-transitory computer-readable medium having software for determining a common bit-loading modulation scheme for communicating between a plurality of nodes in a broadband cable network (“BCN”), the non-transitory computer-readable medium comprising:

logic configured for transmitting a probe signal from a transmitting node within the plurality of nodes to a sub-plurality of receiving nodes within the plurality of nodes;

logic configured for receiving a plurality of response signals from the sub-plurality of receiving nodes wherein each response signal includes a bit-loading modulation scheme determined by a corresponding receiving node; and

logic configured for determining the common bit-loading modulation scheme from the received plurality of response signals,

wherein the transmission characteristics of the channel path are determined by logic configured for measuring the bit-error rate (“BER”) characteristics of the received probe signal at the one receiving node, and

wherein the logic configured for determining a common bit-loading modulation scheme includes:

logic configured for comparing a plurality of bit-loading modulation schemes from the corresponding received plurality of response signals; and

logic configured for determining the common bit-loading modulation scheme in response to comparing the plurality of bit-loaded modulation schemes.

6. A non-transitory computer-readable medium having software for determining a common bit-loading modulation scheme for communicating between a plurality of nodes in a broadband cable network (“BCN”), the non-transitory computer-readable medium comprising:

logic configured for transmitting a probe signal from a transmitting node within the plurality of nodes to a sub-plurality of receiving nodes within the plurality of nodes;

logic configured for receiving a plurality of response signals from the sub-plurality of receiving nodes wherein each response signal includes a bit-loading modulation scheme determined by a corresponding receiving node;

logic configured for determining the common bit-loading modulation scheme from the received plurality of response signals; and

logic configured for generating the response signal, wherein the response signal utilizes a bit-loading modulation scheme that is generated by the one receiving node in response to determining the transmission characteristics of the channel path

wherein the transmission characteristics of the channel path are determined by logic configured for measuring the product-error rate (“PER”) characteristics of the received probe signal at the one receiving node,

wherein determining a common bit-loading modulation scheme includes:

logic configured for comparing a plurality of bit-loading modulation schemes from the corresponding received plurality of response signals; and

logic configured for determining the common bit-loading modulation scheme in response to comparing the plurality of bit-loaded modulation schemes.

7. A broadband cable network (“BCN”) for determining a common bit-loading modulation scheme for communicating between a plurality of nodes in the BCN, the BCN comprising:

a transmitting node within the plurality of nodes, the transmitting node capable of sending a probe signal; and

a sub-plurality of receiving nodes within the plurality of nodes wherein the sub-plurality of receiving nodes are capable of transmitting a sub-plurality of response signals in response to receiving the probe signal, wherein the sub-plurality of response signals includes a plurality of bit-loading modulation schemes, wherein each bit-loading modulation scheme of the plurality of bit-loading modulation schemes is determined by a receiving node within the sub-plurality of receiving nodes,

wherein the transmitting node is capable of determining the common bit-loading modulation scheme from the sub-plurality of response signals,

wherein the transmitting node is further capable of determining the common bit-loading modulation scheme in response to comparing all bit-loading modulation schemes within the plurality of bit-loading modulation schemes.

8. The BCN of claim 7 , wherein each bit-loading modulation scheme utilizes a quadrature phase shift keying (“QPSK”) modulation.

9. The BCN of claim 7 , wherein the each bit-loading modulation scheme utilizes quadrature amplitude modulation (“QAM”).

10. The BCN of claim 9 , wherein each bit-loading modulation scheme is chosen from the group essentially consisting of 64 QAM modulation, 128 QAM modulation, 256 QAM modulation, 512 QAM modulation and 1024 QAM modulation.

11. The BCN of claim 7 , wherein a receiving node within the sub-plurality of receiving nodes is capable of:

receiving the probe signal at the receiving node through a channel path of transmission; and

determining the transmission characteristics of the channel path at the receiving node; and

transmitting a response signal, of the sub-plurality of response signals, from the receiving node to the transmitting node,

wherein the receiving node is capable of determining the transmission characteristics of the channel path by measuring the signal-to-noise (“SNR”) characteristics of the received probe signal at the receiving node

wherein the receiving node is capable of generating the response signal, wherein the response signal utilizes a bit-loading modulation scheme that is generated by the receiving node in response to determining the transmission characteristics of the channel path, and

wherein the transmitting node is capable of determining a common bit-loading modulation scheme by:

comparing a plurality of bit-loading modulation schemes from the corresponding received plurality of response signals; and

determining the common bit-loading modulation scheme in response to comparing the plurality of bit-loaded modulation schemes.

12. The BCN of claim 7 , wherein a receiving node within the sub-plurality of receiving nodes is capable of:

receiving the probe signal at the receiving node through a channel path of transmission;

determining the transmission characteristics of the channel path at the receiving node; and

transmitting a response signal, of the sub-plurality of response signals, from the receiving node to the transmitting node,

wherein the receiving node is capable of determining the transmission characteristics of the channel path by measuring the bit-error rate (“BER”) characteristics of the received probe signal at the one receiving node,

wherein the receiving node is capable of generating the response signal, wherein the response signal utilizes a bit-loading modulation scheme that is generated by the receiving node in response to determining the transmission characteristics of the channel path, and

wherein the transmitting node is capable of determining a common bit-loading modulation scheme by:

comparing a plurality of bit-loading modulation schemes from the corresponding received plurality of response signals; and

determining the common bit-loading modulation scheme in response to comparing the plurality of bit-loaded modulation schemes.

13. The BCN of claim 7 , wherein a receiving node within the sub-plurality of receiving nodes is capable of:

receiving the probe signal at the receiving node through a channel path of transmission;

determining the transmission characteristics of the channel path at the receiving node; and

transmitting a response signal, of the sub-plurality of response signals, from the receiving node to the transmitting node,

wherein the receiving node is capable of determining the transmission characteristics of the channel path by measuring the product-error rate (“PER”) characteristics of the received probe signal at the one receiving node,

wherein the receiving node is capable of generating the response signal,

wherein the response signal utilizes a bit-loading modulation scheme that is generated by the receiving node in response to determining the transmission characteristics of the channel path, and

wherein the transmitting node is capable of determining a common bit-loading modulation scheme by;

comparing a plurality of bit-loading modulation schemes from the corresponding received plurality of response signals; and

determining the common bit-loading modulation scheme in response to comparing the plurality of bit-loaded modulation schemes.

14. A broadband cable network (“BCN”) for determining a common bit-loading modulation scheme for communicating between a plurality of nodes in the BCN, the BCN comprising:

a transmitting node within the plurality of nodes, the transmitting node having means for sending a probe signal; and

a sub-plurality of receiving nodes within the plurality of nodes, wherein the sub-plurality of receiving nodes have means for transmitting a sub-plurality of response signals in response to receiving the probe signal, wherein the sub-plurality of response signals includes a plurality of bit-loading modulation schemes, wherein each bit-loading modulation scheme of the plurality of bit-loading modulation schemes is determined by a receiving node within the sub-plurality of receiving nodes; and

wherein the transmitting node includes means for determining the common bit-loading modulation scheme from the sub-plurality of response signals,

wherein the transmitting node further includes means for determining the common bit-loading modulation scheme in response to comparing all bit-loading modulation schemes within the plurality of bit-loading modulation schemes.

15. The BCN of claim 14 , wherein each bit-loading modulation scheme utilizes a quadrature phase shift keying (“QPSK”) modulation.

16. The BCN of claim 14 , wherein the each bit-loading modulation scheme utilizes quadrature amplitude modulation (“QAM”).

17. The BCN of claim 16 , wherein each bit-loading modulation scheme is chosen from the group essentially consisting of 64 QAM modulation, 128 QAM modulation, 256 QAM modulation, 512 QAM modulation and 1024 QAM modulation.

18. The BCN of claim 17 , wherein the receiving node includes means for determining the transmission characteristics of the channel path by measuring the bit-error rate (“BER”) characteristics of the received probe signal at the one receiving node,

wherein the receiving node includes means for generating the response signal, wherein the response signal utilizes a bit-loading modulation scheme that is generated by the receiving node in response to determining the transmission characteristics of the channel path,

wherein the transmitting node includes means for determining a common bit-loading modulation scheme, and

wherein the means for determining a common bit-loading modulation scheme includes:

means for comparing a plurality of bit-loading modulation schemes from the corresponding received plurality of response signals; and

means for determining the common bit-loading modulation scheme in response to the means for comparing the plurality of bit-loaded modulation schemes.

19. The BCN of claim 17 , wherein the receiving node includes means for determining the transmission characteristics of the channel path by measuring the product-error rate (“PER”) characteristics of the received probe signal at the one receiving node,

wherein the receiving node includes means for generating the response signal, wherein the response signal utilizes a bit-loading modulation scheme that is generated by the receiving node in response to determining the transmission characteristics of the channel path,

wherein the transmitting node includes means for determining a common bit-loading modulation scheme,

wherein the means for determining a common bit-loading modulation scheme includes:

means for comparing a plurality of bit-loading modulation schemes from the corresponding received plurality of response signals; and

means for determining the common bit-loading modulation scheme in response to the means for comparing the plurality of bit-loaded modulation schemes.

20. A broadband cable network (“BCN”) for determining a common bit-loading modulation scheme for communicating between a plurality of nodes in the BCN, the BCN comprising:

a transmitting node within the plurality of nodes, the transmitting node having means for sending a probe signal; and

a sub-plurality of receiving nodes within the plurality of nodes, wherein the sub-plurality of receiving nodes have means for transmitting a sub-plurality of response signals in response to receiving the probe signal, wherein the sub-plurality of response signals includes a plurality of bit-loading modulation schemes, wherein each bit-loading modulation scheme of the plurality of bit-loading modulation schemes is determined by a receiving node within the sub-plurality of receiving nodes; and

wherein the transmitting node includes means for determining the common bit-loading modulation scheme from the sub-plurality of response signals,

wherein a receiving node within the sub-plurality of receiving nodes includes:

means for receiving the probe signal at the receiving node through a channel path of transmission;

means for determining the transmission characteristics of the channel path at the receiving node; and

means for transmitting a response signal, of the sub-plurality of response signals, from the receiving node to the transmitting node

wherein the receiving node includes means for determining the transmission characteristics of the channel path by measuring the signal-to-noise (“SNR”) characteristics of the received probe signal at the receiving node,

wherein the receiving node includes means for generating the response signal, wherein the response signal utilizes a bit-loading modulation scheme that is generated by the receiving node in response to determining the transmission characteristics of the channel path,

wherein the transmitting node includes means for determining a common bit-loading modulation scheme, and

wherein the means for determining a common bit-loading modulation scheme includes:

means for comparing a plurality of bit-loading modulation schemes from the corresponding received plurality of response signals; and

means for determining the common bit-loading modulation scheme in response to the means for comparing the plurality of bit-loaded modulation schemes.

21. A broadband cable network (“BCN”) for determining a common bit-loading modulation scheme for communicating between a plurality of nodes in the BCN, the BCN comprising:

means for transmitting a probe signal from a transmitting node within the plurality of nodes to a sub-plurality of receiving nodes within the plurality of nodes;

means for receiving a plurality of response signals from the sub-plurality of receiving nodes wherein each response signal includes a bit-loading modulation scheme determined by a corresponding receiving node;

means for determining the common bit-loading modulation scheme from the received plurality of response signals;

means for receiving the probe signal at one receiving node of the plurality of receiving nodes through a channel path of transmission;

means for determining the transmission characteristics of the channel path at the one receiving node;

means for transmitting a response signal from the one receiving node to the transmitting node; and

means for generating the response signal, wherein the response signal utilizes a bit-loading modulation scheme that is generated by the one receiving node in response to determining the transmission characteristics of the channel path;

wherein the one receiving node includes means for determining the transmission characteristics of the channel path by measuring the signal-to-noise (“SNR”) characteristics of the received probe signal at the one receiving node, and

wherein the means for determining a common bit-loading modulation scheme includes:

means for comparing a plurality of bit-loading modulation schemes from the corresponding received plurality of response signals; and

means for determining the common bit-loading modulation scheme in response to comparing the plurality of bit-loaded modulation schemes.

22. A broadband cable network (“BCN”) for determining a common bit-loading modulation scheme for communicating between a plurality of nodes in the BCN, the BCN comprising:

means for transmitting a probe signal from a transmitting node within the plurality of nodes to a sub-plurality of receiving nodes within the plurality of nodes;

means for receiving a plurality of response signals from the sub-plurality of receiving nodes wherein each response signal includes a bit-loading modulation scheme determined by a corresponding receiving node; and

means for determining the common bit-loading modulation scheme from the received plurality of response signals;

means for receiving the probe signal at one receiving node of the plurality of receiving nodes through a channel path of transmission;

means for determining the transmission characteristics of the channel path at the one receiving node;

means for transmitting a response signal from the one receiving node to the transmitting node; and

means for generating the response signal, wherein the response signal utilizes a bit-loading modulation scheme that is generated by the one receiving node in response to determining the transmission characteristics of the channel path,

wherein the one receiving node includes means for determining the transmission characteristics of the channel path by measuring the bit-error rate (“BER”) characteristics of the received probe signal at the one receiving node, and

wherein the means for determining a common bit-loading modulation scheme includes:

means for comparing a plurality of bit-loading modulation schemes from the corresponding received plurality of response signals; and

means for determining the common bit-loading modulation scheme in response to comparing the plurality of bit-loaded modulation schemes.

23. The BCN of claim 22 , further including means for generating the response signal, wherein the response signal utilizes a bit-loading modulation scheme that is generated by the one receiving node in response to determining the transmission characteristics of the channel path,

wherein the means for determining a common bit-loading modulation scheme includes:

means for comparing a plurality of bit-loading modulation schemes from the corresponding received plurality of response signals; and

means for determining the common bit-loading modulation scheme in response to comparing the plurality of bit-loaded modulation schemes.

Assignments (9)