公开(公告)号：US06205132B1

公开(公告)日：2001-03-20

申请号：US08803995

申请日：1997-02-21

申请人： Een Kee Hong ,  Dong Ho Kim ,  Yeon Dae Yang ,  Byeong Chul Ahn ,  Yong Wan Park ,  Seong Moon Ryu ,  Tae Young Lee ,  An Na Choi

发明人： Een Kee Hong ,  Dong Ho Kim ,  Yeon Dae Yang ,  Byeong Chul Ahn ,  Yong Wan Park ,  Seong Moon Ryu ,  Tae Young Lee ,  An Na Choi

IPC分类号： H04B7216

CPC分类号： H04B1/70775 ,  H04B1/7083 ,  H04B2201/70701 ,  H04B2201/70702

摘要： The present invention discloses a method for accessing a cell, and more particularly, to a method for acquiring an initial synchronization using two pilot channels in a CDMA (Code Division Multiple Access) communication system of an asynchronous or quasi-synchronous mode. In accordance with the present invention, a CDMA communication system of an quasi-synchronous mode comprises the steps of synchronizing the mobile station with a cluster pilot, and searching for cell pilots on the basis of the cluster synchronization channel set up by the cluster pilot, and synchronizing the mobile station with the cell pilot having a maximum sensitivity, whereby the mobile station is synchronized with the base station through the cluster pilot and the cell pilot. Also, in accordance with the present invention, a CDMA communication system of a asynchronous mode comprises the steps of synchronizing the mobile station with a cluster pilot, and searching for all cell pilots in a cluster of which synchronization has been set up by the cluster pilot, and synchronizing the mobile station with the cell pilot having a maximum sensitivity, whereby the mobile station is synchronized with the base station through the cluster pilot and the cell pilot.

摘要翻译： 本发明公开了一种用于访问小区的方法，更具体地说，涉及一种用于在异步或准同步模式的CDMA（码分多址）通信系统中使用两个导频信道获取初始同步的方法。 根据本发明，准同步模式的CDMA通信系统包括以下步骤：根据由集群导频设置的集群同步信道，同步移动台与群集导频，并搜索小区导频， 并使移动台与具有最大灵敏度的小区导频同步，由此移动台通过群集导频和小区导频与基站同步。 此外，根据本发明，异步模式的CDMA通信系统包括以下步骤：使移动站与群集导频同步，并且搜索群集中已经由群集导频建立的同步的群集中的所有小区导频 并且使移动台与具有最大灵敏度的小区导频同步，由此移动台通过群集导频和小区导频与基站同步。