Patent ID: 6571099
Filing Date: 2003-05-27
Classification: H04B

Abstract:
A cell searching method in an asynchronous wideband code division multiple access system, said method comprising the steps of:(a) obtaining a predetermined starting point among a plurality of locations of sync channel codes in a frame with respect to a base station having a minimal channel loss; (b) obtaining long code group and frame sync information at a mobile station based on outputs of a matched filter every mini slot clock location for one frame time after a starting point of a current mini slot; (c) detecting a long code based on the long code group and frame sync information obtained in step (b) wherein the long code is used for band-spreading of a forward link by a current base station; and (d) forming each of the sync channel codes as a binary code having 156 chips which are not modulated, each of the sync channel codes being transmitted every slot at a slot boundary, and dividing one frame into 16 slots, each of the slots being divided into a plurality of mini slots.