公开(公告)号：EP1225782A4

公开(公告)日：2002-11-27

申请号：EP99951159

申请日：1999-10-29

申请人： FUJITSU LTD

发明人： MATSUMOTO NORIHISA ,  SAITO TAMIO

IPC分类号： H04W16/06 ,  H04W36/22 ,  H04W36/32 ,  H04Q7/38 ,  H04J13/00

CPC分类号： H04W36/32 ,  H04W16/06 ,  H04W36/22

摘要： A hand-off method for CDMA mobile communication system in which one or more radio frequency layers are assigned to each radio zone, wherein when it is detected from obtained position information of a mobile that the mobile is near the boundary between different frequency layers which are assigned to the cell where the mobile is communicating and to an adjacent cell, frequency-to-frequency hand-off to a layer of common frequency commonly prepared for both the cell where the mobile is communicating and the adjacent cell is performed, whereby the communication is hardly cut off at the cell-to-cell hand-off from a cell to another cell that the mobile is entering, it is unnecessary to install devices for transmitting only control signals such as a pilot signal of a frequency which is not prepared in the cell and for measuring the electric field strength of the mobile, and hence the equipment investment for building a system can be reduced.

摘要翻译： 一种用于CDMA移动通信系统的切换方法，其中一个或多个射频层被分配给每个无线电区域，其中当从所获得的移动电话的位置信息中检测到移动电话在不同频率层之间的边界附近时 分配给移动站正在通信的小区以及相邻小区的频率 - 频率越区切换到通常为移动站正在通信的小区和相邻小区执行的小区共同准备的共同频率层，由此通信 在从移动台正在进入的小区到另一个小区的小区到小区的切换中几乎不切断，因此不需要安装用于仅发送未准备的频率的导频信号等控制信号的装置 小区和用于测量移动设备的电场强度，因此可以减少用于构建系统的设备投资。