Patent ID: 7012909
Filing Date: 2006-03-14
Classification: H04B

Abstract:
1. A cell search method for a mobile station in a mobile communication system, the method being characterized by comprising: a first step of despreading a received signal by the mobile station using a common spreading code common to all slots and detecting slot boundaries on the basis of a first average correlation coefficient; a second step of despreading the signal on the basis of said slot boundaries detected at the first step, using different individual spreading codes for said respective slots, and detecting frame boundaries and a scramble code group on the basis of a second average correlation coefficient; and a third step of descrambling a common pilot signal on the basis of said frame boundaries and scramble code group detected at the second step, and detecting a scramble code on the basis of a third average correlation coefficient; wherein after said first, second, and third steps have been repeated n times (n>2), said first step on n+1 th time is executed to detect slot boundaries using a plurality of said first average correlation coefficients obtained by n th times of said first step.