METHOD AND DEVICE FOR ADJUSTING FREQUENCY DEVIATION IN MOBILE TERMINAL

摘要

A method for adjusting a frequency deviation in a mobile terminal is provided. The method comprises: the terminal detects downlink broadcast signal strength or pilot signal strength of the serving cell and neighbor cells; the terminal judges whether the difference of the downlink broadcast signal strength or the pilot signal strength between the serving cell and the strongest neighbor cell is larger than a threshold; if the difference is larger than the threshold, the terminal computes the downlink frequency deviation according to the broadcast channel or the pilot code of the serving cell, and uses the frequency deviation as the estimate value of the frequency deviation of the terminal; if the difference is not lager than the threshold, the terminal computes the downlink frequency deviation of the serving cell according to the broadcast channel or the pilot code of the serving cell, computes the downlink frequency deviation of the strongest neighbor cell according to the broadcast channel or the pilot code of the strongest neighbor cell, combines the frequency deviations of the two cells into the estimate value of the frequency deviation of the terminal, and correct the local carrier frequency by using the estimate value of the frequency deviation of the terminal. A device for adjusting the frequency deviation in the mobile terminal is also provided. The performance of the terminal under the condition of high speed movement is improved by the method and the device.