Patent ID: 7486656
Filing Date: 2009-02-03
Classification: H04B

Abstract:
1. A method for a mobile unit synchronizing with a base station in a WCDMA system, the base station transmitting a signal to the mobile unit, the signal having a primary synchronization channel, a secondary synchronization channel, and a common pilot channel, the method comprising: receiving the signal; sampling the signal in each slot period to generate a plurality of sample signals; selecting either odd ones or even ones of the sample signals during a first slot period to be a first period signal; obtaining a first slot timing according to the first period signal and the primary synchronization channel; selecting even ones of the sample signals during a second slot period to be a second period signal if odd ones of the sample signals are selected during the first slot period, selecting odd ones of the sample signals during the second slot period to be the second period signal if even ones of the sample signals are selected during the first slot period; obtaining a second slot timing and a slot synchronization signal according to the second period signal and the primary synchronization channel; selecting even ones of the sample signals during a third slot period to be a third period signal if odd ones of the sample signals are selected during the second slot period, selecting odd ones of the sample signals during the third slot period to be a third period signal if even ones of the sample signals are selected during the second slot period; obtaining a frame synchronization signal according to the first slot timing, the second slot timing, the slot synchronization signal, the secondary synchronization channel, and the third period signal; and obtaining a scrambling-code identification signal according to the first slot timing, the second slot timing, the frame synchronization signal, and common pilot channel and the third period signal.