Method and apparatus for timebase synchronization for use with cellular base stations
    1.
    发明授权
    Method and apparatus for timebase synchronization for use with cellular base stations 失效
    用于与蜂窝基站一起使用的时基同步的方法和装置

    公开(公告)号:US07373175B2

    公开(公告)日:2008-05-13

    申请号:US10096142

    申请日:2002-03-08

    IPC分类号: H04Q7/30

    摘要: A server-assisted approach for synchronizing timebases (120 and 140) in a client-server system utilizes global positioning system (GPS) receivers (136 and 110) at both the client and server. In a typical implementation, the GPS receiver (136) associated with the client system receives fragmentary or incomplete data from satellites that are part of the GPS. Thus, the client GPS receiver (136) is capable of receiving only fragmentary information and cannot derive accurate time signals therefrom. The server system (102) is associated with a GPS receiver (110) capable of generating accurate time and position data based on signals from GPS satellites (114). The fragmentary information from the client GPS receiver (136) is transmitted to the server (126) along with time information indicating the time at which the client captured the fragmentary GPS data. The server (126) analyzes the fragmentary GPS data with respect to the complete GPS data available from the GPS receiver (110) associated with the server. The server (126) accurately determines the actual time at which the fragmentary GPS data was captured and transmits timing signals to the client (146). The timing signals are used to correct the client timebase (140) thus synchronizing the client and server timebases (140 and 120).

    摘要翻译: 用于在客户机 - 服务器系统中同步时基(120和140)的服务器辅助方法在客户端和服务器两者都使用全球定位系统(GPS)接收器(136和110)。 在典型的实现中,与客户系统相关联的GPS接收器(136)从作为GPS的一部分的卫星接收碎片或不完整的数据。 因此,客户端GPS接收机(136)能够仅接收到部分信息,并且不能从其导出准确的时间信号。 服务器系统(102)与能够基于来自GPS卫星(114)的信号产生准确的时间和位置数据的GPS接收器(110)相关联。 来自客户端GPS接收器(136)的部分信息与指示客户端捕获部分GPS数据的时间的时间信息一起发送到服务器(126)。 服务器(126)分析关于与服务器相关联的GPS接收器(110)可用的​​完整GPS数据的部分GPS数据。 服务器(126)准确地确定捕获碎片GPS数据的实际时间,并将定时信号发送给客户端(146)。 定时信号用于校正客户端时基(140),从而同步客户端和服务器时基(140和120)。