Patent ID: 7689235

Claim:
A method for performing initial cell search, the method comprising: performing an exhaustive initial cell search on stored frequencies wherein the exhaustive initial cell search includes: maintaining a list of any chin-offset locations that lead to unsuitable cells characterized as step 1 of the initial cell search, wherein step 1 of the initial cell search includes a wireless transmit/receive unit (WTRU) looking for a primary synchronization code (PSC) correlator peak location with the highest power; generating a mask for said chip-offset locations, characterized as step 2 of the initial cell search, so that subsequent step 1 of the initial cell search will not detect any PSCs in the masked chip-offset locations; performing a non-exhaustive initial cell search on initial frequencies on a condition that no cell is found from the exhaustive initial cell search on stored frequencies; and performing an exhaustive initial cell search on initial frequencies on a condition that no cell is found or an unsuitable cell is detected from the non-exhaustive initial cell search on initial frequencies.