FREQUENCY OFFSET ADJUSTING METHOD AND DEVICE FOR TERMINAL AT BOOTING

摘要

Provided are a frequency offset adjusting method and device for a terminal at booting, applicable in a terminal comprising a digitally compensated crystal oscillator (DCXO) for use in generating a reference clock. The frequency offset adjusting method comprises: acquiring a first frequency offset value of the DCXO corresponding to a first temperature of the terminal at booting; acquiring a second frequency offset value of the DCXO corresponding to a second temperature of the terminal at calibration; acquiring a frequency offset control word corresponding to the value difference between the first frequency offset value and the second frequency offset value; adding the frequency offset word corresponding to the value difference to a frequency control word acquired by the terminal via calibration, writing the frequency control word acquired via the addition into a frequency control register corresponding to the DCXO, and adjusting a reference clock frequency. In the present invention, as the frequency offset caused by a change in temperature is compensated, cell search and synchronization performances of the terminal at booting are ensured.