Methods and apparatus for reducing the impact of RF interference based on estimation of colored noise
First Claim
1. A method in a mobile communication device for use in reducing the effect of interference, the mobile communication device comprising a first radio frequency (RF) transceiver operable in a first RF band and a second RF transceiver operable in a second RF band adjacent the first RF band, the method comprising:
- (i) for each channel of multiple channels to be assessed, the multiple channels belonging to the first RF band;
performing a predetermined communication function using the second RF transceiver;
estimating a noise power spectrum on a channel being assessed of the first RF transceiver during performance of the predetermined communication function; and
storing parameters which characterize the estimated noise power spectrum in association with an identifier of the channel being assessed; and
(ii) when performing the predetermined communication function again using the second RF transceiver;
identifying the channel on which the first RF transceiver is currently operating;
retrieving the stored parameters that were stored in associated with the identified channel which characterize the estimated noise power spectrum; and
applying the retrieved parameters to the first RF transceiver during reception on the identified channel.
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Abstract
A mobile device having first and second RF transceivers performs a communication function in accordance with a communication protocol of the second RF transceiver. During performance of this function, the mobile device estimates the RF interference on a channel of the first RF transceiver, and stores parameters which characterize the estimated RF interference in association with an identifier corresponding to the function. These actions are repeated for a plurality of channels of the first RF transceiver, as well as for a plurality of different communication functions. When performing a communication function again, the mobile device receives an identifier corresponding to the function and retrieves stored parameters corresponding to the received identifier. The mobile device applies the retrieved parameters to the first RF transceiver for reducing the adverse effect of RF interference during reception on the channel of the first RF transceiver.
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Citations
20 Claims
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1. A method in a mobile communication device for use in reducing the effect of interference, the mobile communication device comprising a first radio frequency (RF) transceiver operable in a first RF band and a second RF transceiver operable in a second RF band adjacent the first RF band, the method comprising:
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(i) for each channel of multiple channels to be assessed, the multiple channels belonging to the first RF band; performing a predetermined communication function using the second RF transceiver; estimating a noise power spectrum on a channel being assessed of the first RF transceiver during performance of the predetermined communication function; and storing parameters which characterize the estimated noise power spectrum in association with an identifier of the channel being assessed; and (ii) when performing the predetermined communication function again using the second RF transceiver; identifying the channel on which the first RF transceiver is currently operating; retrieving the stored parameters that were stored in associated with the identified channel which characterize the estimated noise power spectrum; and applying the retrieved parameters to the first RF transceiver during reception on the identified channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 19)
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8. A mobile communication device, comprising:
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one or more processors; a memory coupled to the one or more processors; a first radio frequency (RF) transceiver coupled to the one or more processors, the first RF transceiver being operable in a first RF band; a second RF transceiver coupled to the one or more processors, the second RF transceiver being operable in a second RF band adjacent the first RF band; the one or more processors being configured; (i) for each channel of multiple channels to be assessed, the multiple channels belonging to the first RF band; to perform a predetermined communication function using the second RF transceiver; to estimate a noise power spectrum on a channel being assessed of the first RF transceiver during performance of the predetermined communication function; and to store, in the memory, parameters which characterize the estimated noise power spectrum in association with an identifier of the channel being assessed; and (ii) when performing the predetermined communication function again using the second RF transceiver; to identify the channel on which the first RF transceiver is currently operating; to retrieve from the memory the stored parameters that were stored in associated with the identified channel which characterize the estimated noise power spectrum; and to apply the retrieved parameters to the first RF transceiver during reception on the identified channel. - View Dependent Claims (9, 10, 11, 12, 13, 20)
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14. A method in a mobile communication device for use in reducing the effect of interference, the mobile communication device comprising a first radio frequency (RF) transceiver operable in a first RF band and a second RF transceiver operable in a second RF band adjacent the first RF band, the method comprising:
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(i) for each channel of multiple channels to be assessed, the multiple channels belonging to the first RF band; performing a first predetermined communication function using the second RF transceiver; estimating a first noise power spectrum on a channel being assessed of the first RF transceiver during performance of the first predetermined communication function; storing first parameters which characterize the estimated first noise power spectrum in association with an identifier corresponding to the first predetermined communication function and in association with an identifier of the channel being assessed; performing a second predetermined communication function using the second RF transceiver; estimating a second noise power spectrum on the channel being assessed of the first RF transceiver during performance of the second predetermined communication function; and storing second parameters which characterize the estimated second noise power spectrum in association with an identifier corresponding to the second predetermined communication function and in association with the identifier of the channel being assessed; and (ii) responsive to identifying that the first predetermined communication function is again being performed using the second RF transceiver while the first RF transceiver is operative on an identified channel, retrieving the stored first parameters that were stored in association with the identified channel and applying the retrieved first parameters to the first RF transceiver during reception on the channel of the first RF transceiver; and (iii) responsive to identifying that the second predetermined communication function is again being performed using the second RF transceiver while the first RF transceiver is operative on another identified channel, retrieving the stored second parameters that were stored in associated with the other identified channel and applying the retrieved second parameters to the first RF transceiver during reception on the channel of the first RF transceiver, wherein the first predetermined communication function differs from the second predetermined communication function. - View Dependent Claims (15, 16, 17, 18)
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Specification