Patent ID: 7974647
Filing Date: 2011-07-05
Classification: H04W

Abstract:
1. A method of timing synchronization between a base station clock and a mobile station clock, comprising: determining a number of times of the mobile station clock switching from a first clock speed to a second clock speed; comparing the number of times of the mobile station clock switching with a predetermined number of clock speed switches; receiving a control channel block when the number of times of clock speed switches reaches the predetermined number of clock speed switches; decoding the control channel block to determine a timing error between the base station clock and the mobile station clock; and compensating the timing error for the mobile station clock; wherein the determination of the timing error comprises: decoding a transmitted training sequence according to the control channel block; computing a first cross-correlation according to the transmitted training sequence and a known training sequence; shifting the transmitted training sequence in time to compute a second cross-correlation according to the shifted transmitted training sequence and the known training sequence; and determining the timing error corresponding to a maximum cross-correlation.