Cellular radio locator system
    1.
    发明授权
    Cellular radio locator system 失效
    蜂窝无线定位系统

    公开(公告)号:US07274939B2

    公开(公告)日:2007-09-25

    申请号:US09231066

    申请日:1999-01-14

    IPC分类号: H04Q7/20

    摘要: A cellular radio network based positioning system for determining the position of a mobile station (16). For each base transceiver station (1 to 5) or cell of the network, a fixed list of base transceiver stations is stored by a Mobile Positioning Centre (13). Each list identifies those base transceiver stations which enable the position of a mobile station served by the corresponding base transceiver station (6) to be optimally determined. The list is transmitted to the mobile station (16) via the serving base transceiver station (6) and the mobile station determines an observed time difference for each of the listed base transceiver stations, relative to the serving base transceiver station (6), from signals broadcast by the listed base transceiver stations. The observed time differences are transmitted from the mobile station (6) to the serving base transceiver station (6) and are used by the network to compute the position of the mobile station (16).

    摘要翻译: 一种基于蜂窝无线电网络的定位系统,用于确定移动台(16)的位置。 对于每个基站(1至5)或网络的小区,移动定位中心(13)存储固定的基站收发器列表。 每个列表识别能够最佳地确定由对应的基站收发器(6)服务的移动台的位置的基站收发台。 该列表经由服务基站收发台(6)发送到移动站(16),并且移动站相对于服务基站收发台(6)确定每个列出的基站收发信机的观测时间差, 信号由所列基站收发台广播。 观察到的时间差从移动台(6)发送到服务基站(6),由网络使用以计算移动台(16)的位置。

    Method of transmitting synchronized channel in radio transmitter
    2.
    发明授权
    Method of transmitting synchronized channel in radio transmitter 失效
    在无线电发射机中发送同步信道的方法

    公开(公告)号:US06990093B1

    公开(公告)日:2006-01-24

    申请号:US09647081

    申请日:1999-03-25

    IPC分类号: H04J3/06

    摘要: The invention relates to a method of transmitting a synchronized channel in a radio transmitter and to a radio transmitter. The method comprises transmitting normal radio bursts on a normal channel asynchronously. In the invention, synchronized timing is obtained, synchronized radio bursts (SB) are formed, and a synchronized radio burst is transmitted in the place of a normal radio burst (NB). The length of the synchronized radio burst (SB) is at most half of the length of the normal radio burst (NB). The transmission of the synchronized radio burst (SB) is in synchronization with the obtained synchronized timing.

    摘要翻译: 本发明涉及在无线电发射机和无线电发射机中发送同步信道的方法。 该方法包括在正常信道上异步发送正常的无线电突发。 在本发明中,获得同步的定时,形成同步的无线电突发(SB),并且发送同步的无线电突发代替正常的无线电突发(NB)。 同步无线电突发(SB)的长度最多为正常无线电突发(NB)长度的一半。 同步无线电突发(SB)的传输与获得的同步定时同步。