Channel selection for a hybrid fiber coax network
First Claim
1. A method for controlling a channel in a hybrid fiber coax (HFC) network, the method comprising:
- monitoring n-bit words transmitted over the channel over a period of time;
counting a number of parity errors detected in monitoring the n-bit words over the period of time;
deriving a probable bit error rate based on the counted number of parity errors;
comparing the probable bit error rate over the time period to a pre-determined bit error rate value to determine if the channel is corrupted; and
increasing transmission power of the channel if the channel is corrupted without exceeding a total system power limit for the HFC network.
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Accused Products
Abstract
A method for monitoring at least one telephony communication n-bit channel, wherein one of the bits is a parity bit, includes sampling the parity bit of the n-bit channel. A probable bit error rate is derived from the sampling of the parity bit. The probable bit error rate can be compared to a pre-determined bit error rate value to determine if the at least one telephony communication n-bit channel is corrupted. If the at least one telephony communication n-bit channel is corrupted, the at least one telephony communication n-bit channel is re-allocated to an uncorrupted and unallocated telephony communication n-bit channel. Further, at least one unallocated telephony communication channel can be periodically monitored and error data accumulated to indicate the quality thereof.
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Citations
4 Claims
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1. A method for controlling a channel in a hybrid fiber coax (HFC) network, the method comprising:
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monitoring n-bit words transmitted over the channel over a period of time;
counting a number of parity errors detected in monitoring the n-bit words over the period of time;
deriving a probable bit error rate based on the counted number of parity errors;
comparing the probable bit error rate over the time period to a pre-determined bit error rate value to determine if the channel is corrupted; and
increasing transmission power of the channel if the channel is corrupted without exceeding a total system power limit for the HFC network. - View Dependent Claims (2, 3, 4)
re-allocating the communication from the channel to a different channel based on the comparison; and
wherein the channel is contained within a band of a plurality of channels, the band being associated with at least one control channel, and further wherein the different channel is located within the band.
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3. The method of claim 1, and further comprising:
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re-allocating the communication from the channel to a different channel based on the comparison; and
wherein the channel is contained within a band of a plurality of channels, the band being associated with at least one control channel, and further wherein the different channel is located in a second band of a plurality of channels having another at least one control channel associated therewith.
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4. The method of claim 1, and further comprising:
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deriving at least one additional probable bit error rate from the monitoring of the channel over at least one longer time period if the channel is not corrupted; and
comparing the at least one additional probable bit error rate to an additional pre-determined bit error rate value to determine if the channel is corrupted.
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Specification