Patent ID: 6907233

Claim:
A method of performing a frequency correction of a radio module, said method comprising the steps of: a) sampling frequency data a first time to estimate a first frequency error; b) applying a first reference frequency to a radio transceiver of said radio module to compensate for said first frequency error, wherein said radio transceiver uses said first reference frequency along with a frequency output by an oscillator to tune said radio transceiver to achieve a first frequency correction; c) if said first frequency error is greater than a pre-determined amount, performing a large shift frequency correction, said step c) comprising the steps of: c1) sampling frequency data a second time to estimate a second frequency error after said first frequency correction; and c2) if said first frequency correction was within pre-determined parameters, applying a second reference frequency to said radio transceiver to compensate for said second frequency error, wherein said second reference frequency compensates for said first and said second frequency errors.