Radio telephone system incorporating multiple time periods for
communication transfer
    1.
    发明授权
    Radio telephone system incorporating multiple time periods for communication transfer 失效
    包含多个时间段用于通信传输的无线电话系统

    公开(公告)号:US5203010A

    公开(公告)日:1993-04-13

    申请号:US612292

    申请日:1990-11-13

    IPC分类号: H04W36/30

    CPC分类号: H04W36/30

    摘要: A cellular radiotelephone system transfers a call from a source base-site (200) to one target base-site (205,210). A source base-site (200) in the first RF coverage area (100) measures the signal strength (RSSI.sub.S) of a mobile (225), provides a forecasted signal strength (RSSI.sub.F) representing a would-be power increase of the mobile (225) and sets up two time windows. The source base-site (200) sends the measured and forecasted signal strengths to candidate target base-sites (205,210) found by the mobile (225) which measure the mobile (225) signal strength (RSSI.sub.T) and compare it once to RSSI.sub.S plus a hysteresis value. If RSSI.sub.T is greater than RSSI.sub.S, the call is transferred to the best responding cell. If RSSI.sub.T is below RSSI.sub.S, RSSI.sub.T is compared to RSSI.sub.F. During this time, the mobile 225 will increase power at the end of the first time window. If RSSI.sub.T is ever greater than RSSI.sub.F at any of the candidate target base-sites (205,210), the call is transferred to the responding target base-site (205,210). If the source base-site (200) receives no responses during the second time window, the process ends.

    摘要翻译: 蜂窝无线电话系统将呼叫从源基站(200)传送到一个目标基站(205,210)。 第一RF覆盖区域(100)中的源基站(200)测量移动站(225)的信号强度(RSSIS),提供表示移动站的功率增加的预测信号强度(RSSIF) 225)并设置两个时间窗口。 源基站(200)将测量的和预测的信号强度发送到测量移动(225)信号强度(RSSIT)的移动站(225)找到的候选目标基站(205,210),并将其与RSSIS plus 滞后值。 如果RSSIT大于RSSIS,则将呼叫转移到最佳响应单元。 如果RSSIT低于RSSIS,则将RSSIT与RSSIF进行比较。 在此期间,移动台225将在第一时间窗口结束时增加功率。 如果任何候选目标基站(205,210)的RSSIT大于RSSIF,则呼叫被转移到响应目标基站(205,210)。 如果源基站(200)在第二个时间窗口内没有收到响应,则该过程结束。