Patent ID: 7013135
Filing Date: 2006-03-14
Classification: H04B

Abstract:
1. A cell search method of a wireless communication terminal apparatus, said method comprising: (a) performing a correlation calculation of a first synchronization channel whereupon a first peak timing that gives a largest correlation value is detected as a slot timing; (b) performing correlation calculations of all second synchronization channels so as to identify a code group assigned to a cell where the apparatus is located, and detect a timing of a frame top; and (c) performing a correlation calculation of a mid-amble belonging to the identified code group, so as to identify the mid-amble and a scrambling code assigned to the cell where the apparatus is located; wherein step (b) comprises: identifying a second synchronization channel at an initial standard timing that is one frame time after the first peak timing; detecting the timing where the correlation value of the identified second synchronization channel is the largest among a plurality of timings within a predetermined time range centering around the standard timing; and setting a second and later standard timing at the timing that is one frame time after a most currently detected second peak timing, and repeating the second synchronization channel identification and second peak timing detection by new standard timings.