Channel reception characteristics through clock rate adjustment
First Claim
Patent Images
1. A method for improving reception channel quality comprising:
- monitoring a radio frequency channel quality metric (RF metric) of a radio frequency channel in use by a device;
determining a frequency band of the RF channel;
determining as a target clock signal a clock signal used by a clocked component of the device to adjust when the RF metric violates a threshold, wherein determining the target clock signal to adjust comprises;
determining one or more possible clock signals, each of the possible clock signals having a rate that has a harmonic within a given range of the center frequency; and
selecting, as the target clock signal, the clock signal having a greatest overlap between a frequency band of the clock signal and the frequency band of the RF channel;
determining a clock adjustment to apply to the target clock signal;
adjusting a rate of the target clock signal according to the clock adjustment; and
returning to monitor the RF metric of the radio frequency channel or an RF metric of another radio frequency channel in use by the device.
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Abstract
A method, apparatus and system are described for adjusting the frequency of one or more clock signals used by a device. The one or more clock signals are adjusted by a determined amount when a channel quality metric of an RF channel in use by the device indicates a degradation in the reception quality.
8 Citations
28 Claims
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1. A method for improving reception channel quality comprising:
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monitoring a radio frequency channel quality metric (RF metric) of a radio frequency channel in use by a device; determining a frequency band of the RF channel; determining as a target clock signal a clock signal used by a clocked component of the device to adjust when the RF metric violates a threshold, wherein determining the target clock signal to adjust comprises; determining one or more possible clock signals, each of the possible clock signals having a rate that has a harmonic within a given range of the center frequency; and selecting, as the target clock signal, the clock signal having a greatest overlap between a frequency band of the clock signal and the frequency band of the RF channel; determining a clock adjustment to apply to the target clock signal; adjusting a rate of the target clock signal according to the clock adjustment; and returning to monitor the RF metric of the radio frequency channel or an RF metric of another radio frequency channel in use by the device. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus for improving reception channel quality comprising:
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a channel monitor component for monitoring a radio frequency channel quality metric (RF metric) of an RF channel used by an RF receiver of a device; and a clock control component for determining as a target clock signal a clock signal used by a clocked component of the device to adjust when the RF metric is above or below a threshold and for determining a clock adjustment to apply to the target clock signal, the clock control component determining the target clock signal to adjust by determining one or more possible clock signals that each has a rate having a harmonic within a given range of the center frequency the clock control component selecting, as the target clock signal, the clock signal having a greatest overlap between a frequency band of the clock signal and a frequency band of the RF channel, the clock control component further for returning to monitor the RF metric of the radio frequency channel or an RF metric of another radio frequency channel in use by the device. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A system comprising:
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an electronic device for improving reception channel quality comprising; a channel monitor component for monitoring a radio frequency channel quality metric (RF metric) of a radio frequency channel used by an RF receiver; and a clock control component for determining as a target clock signal a clock signal used by a clocked component to adjust when the RF metric is above or below a threshold and for determining a clock adjustment to apply to the target clock signal, the clock control component determining the target clock signal to adjust by determining one or more possible clock signals that each has a rate having a harmonic within a given range of the center frequency, the clock control component selecting, as the target clock signal, the clock signal having a greatest overlap between a frequency band of the clock signal and a frequency band of the RF channel, the clock control component further for returning to monitor the RF metric of the radio frequency channel or an RF metric of another radio frequency channel in use by the device; and a peripheral device comprising; the clocked component operating at a frequency of the clock signal; the RF receiver; a clock source generating the clock signal; a RF metric component for determining the RF metric associated with the RF receiver and communicating the RF metric to the channel monitor of the electronic device; and a local clock generator for controlling the clock source to generate the clock signal according to the clock adjustment of the target clock determined by the clock control component of the electronic device.
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14. A method for improving reception channel quality comprising:
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monitoring a radio frequency channel quality metric (RF metric) of a radio frequency channel in use by a device; determining a center frequency of the RF channel; determining as a target clock signal a clock signal used by a clocked component of the device to adjust when the RF metric violates a threshold, wherein determining the target clock signal to adjust comprises; determining one or more possible clock signals used by one or more clocked components of the device, each of the possible clock signals having a respective rate that has a harmonic within a given range of the center frequency; determining, for each clock signal of the one or more possible clock signals, an interference value based on a weighted value of a distance between the closest harmonic of the respective clock signal and the center frequency; selecting, as the target clock signal, the clock signal having the interference value indicative of a clock signal most likely to interfere with the RF channel; determining a clock adjustment to apply to the target clock signal; adjusting a rate of the target clock signal according to the clock adjustment; and returning to monitor the RF metric of the radio frequency channel or an RF metric of another radio frequency channel in use by the device. - View Dependent Claims (15, 16, 17, 18, 19)
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20. An apparatus for improving reception channel quality comprising:
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a channel monitor component for monitoring a radio frequency channel quality metric (RF metric) of an RF channel used by an RF receiver of a device; and a clock control component for determining as a target clock signal a clock signal used by a clocked component of the device to adjust when the RF metric is above or below a threshold and for determining a clock adjustment to apply to the target clock signal, the clock control component determining one or more possible clock signals, each of the possible clock signals operating at a rate that has a harmonic within a given range of a center frequency of the RF channel, the clock control component determining for each clock signal of the one or more possible clock signals an interference value based on a weighted value of a distance between the closest harmonic of the respective clock signal and the center frequency of the RF channel, clock control component selecting as the target clock signal the clock signal having the interference value indicative of a clock signal most likely to interfere with the RF channel, the clock control component further for returning to monitor the RF metric of the radio frequency channel or an RF metric of another radio frequency channel in use by the device. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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28. A system comprising:
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an electronic device for improving reception channel quality comprising; a channel monitor component for monitoring a radio frequency channel quality metric (RF metric) of a radio frequency channel used by an RF receiver; and a clock control component for determining as a target clock signal a clock signal used by a clocked component to adjust when the RF metric is above or below a threshold and for determining a clock adjustment to apply to the target clock signal, the clock control component determining one or more possible clock signals, each of the possible clock signals operating at a rate that has a harmonic within a given range of a center frequency of the RF channel, the clock control component determining for each clock signal of the one or more possible clock signals an interference value based on a weighted value of a distance between the closest harmonic of the respective clock signal and the center frequency of the RF channel, clock control component selecting as the target clock signal the clock signal having the interference value indicative of a clock signal most likely to interfere with the RF channel, the clock control component further for returning to monitor the RF metric of the radio frequency channel or an RF metric of another radio frequency channel in use by the device; and a peripheral device comprising; the clocked component operating at a frequency of the clock signal; the RF receiver; a clock source generating the clock signal; a RF metric component for determining the RF metric associated with the RF receiver and communicating the RF metric to the channel monitor of the electronic device; and a local clock generator for controlling the clock source to generate the clock signal according to the clock adjustment of the target clock determined by the clock control component of the electronic device.
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Specification