公开(公告)号：US06741578B1

公开(公告)日：2004-05-25

申请号：US09562381

申请日：2000-05-01

申请人： Hi-Chan Moon ,  Chae-Man Lim ,  Seung-Joo Maeng ,  Soon-Young Yoon ,  Hyeon-Woo Lee ,  Hee-Won Kang ,  Jae-Min Ahn

发明人： Hi-Chan Moon ,  Chae-Man Lim ,  Seung-Joo Maeng ,  Soon-Young Yoon ,  Hyeon-Woo Lee ,  Hee-Won Kang ,  Jae-Min Ahn

IPC分类号： H04J1300

CPC分类号： H04B7/2668 ,  H04B1/7083 ,  H04W56/00

摘要： A synchronization (sync) code communication device for a CDMA communication system. A base station sync code transmission device comprises a primary sync code transmitter and a secondary sync code transmitter. The primary sync code transmitter is for generating and then transmitting a primary sync code at a first location in a transmission frame. The primary sync code is for acquiring synchronization at a starting point of a frame and the frame is equal to one period of a spreading code. The secondary sync code transmitter is for generating and then transmitting a secondary sync code at a second location in a frame. The secondary sync codes are assigned to base station groups, one to a group. A mobile station sync code receiving device comprises a primary sync code acquisition decider and a base station group decider. The primary sync code acquisition decider is for acquiring a primary sync code received at a first location in a frame, and then acquiring synchronization at a starting point of a frame. The base station group decider is enabled upon acquisition of the primary sync code, receives a secondary sync code transmitted at a second location in the frame, and then determines the base station group to which the transmitting base station belongs.

摘要翻译： 用于CDMA通信系统的同步（同步）码通信设备。 基站同步码发送装置包括主同步码发射机和辅同步码发射机。 主同步码发射器用于在传输帧中的第一位置处产生并发送主同步码。 主同步码用于在帧的起始点获取同步，并且帧等于扩展码的一个周期。 次同步码发射器用于在帧中的第二位置处产生并发送次同步码。 辅助同步码分配给基站组，一组到一组。 移动台同步码接收装置包括主同步码采集决定器和基站组判定器。 主同步码获取决定器用于获取在帧中的第一位置处接收到的主同步码，然后在帧的起始点获取同步。 在获取主同步码后，启用基站组决定器，接收在帧中第二个位置发送的辅助同步码，然后确定发送基站所属的基站组。

公开(公告)号：US06728229B1

公开(公告)日：2004-04-27

申请号：US09560732

申请日：2000-04-28

申请人： Chae-Man Lim

发明人： Chae-Man Lim

IPC分类号： H04B7005

CPC分类号： H04B1/7083 ,  H04B1/7077 ,  H04B2201/70702

摘要： A cell searching apparatus and method in a mobile communication system. In the cell searching method, a base station group specific code is determined from a synchronization channel signal in synchronization with slot time. Then, the predetermined base station group specific symbol cyclically reads a base station group specific code table. A code with a minimum distance estimation value with respect to a base station group specific code read from the base station group specific code table is chosen as a final base station group specific code.

摘要翻译： 一种移动通信系统中的小区搜索装置和方法。 在小区搜索方法中，与时隙时间同步地从同步信道信号确定基站组特定码。 然后，预定基站组特定符号循环地读取基站组特定代码表。 选择从基站组特定码表读取的相对于基站组特定码的最小距离估计值的码作为最终基站组特定码。