Patent ID: 7269203
Filing Date: 2007-09-11
Classification: H04B,H04W,Y02D

Abstract:
1. A mobile communication terminal, comprising; a receiver which receives a spread spectrum signal transmitted by a base station; a demodulator which generates a dispreading code for de-spreading the spread spectrum signal received by the receiver and demodulates the spread spectrum signal using the generated dispreading code; a first oscillator which outputs a signal having a first frequency; a second oscillator which outputs a signal having a second frequency when the receiver changes from a suspension state to a receiving state, wherein the second frequency is higher than the first frequency; and an intermittent receiving controller which controls so that the receiver changes from the suspension state to the receiving state and the demodulator starts demodulation operation using the signal output from the second oscillator, wherein the intermittent receiving controller further controls to execute a search operation to attain synchronization of a dispreading code if an output of a signal demodulated by the demodulator is smaller than a predetermined value, and to not execute the search operation to attain synchronization of the dispreading code if the output of the signal is equal to or larger than the predetermined value, when the receiver changes from the suspension state to the receiving state.