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    • 2. 发明授权
    • Cellular radio locator system
    • 蜂窝无线定位系统
    • US07274939B2
    • 2007-09-25
    • US09231066
    • 1999-01-14
    • Ville RuutuTimo RantalainenMarko AlanenGudni GunnarsonOlli Hyvärinen
    • Ville RuutuTimo RantalainenMarko AlanenGudni GunnarsonOlli Hyvärinen
    • H04Q7/20
    • H04W64/00G01S5/0018G01S5/0045G01S5/10G01S2205/008
    • 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).
    • 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。
    • 3. 发明授权
    • Distance estimation in a communication system
    • 通信系统中的距离估计
    • US07358899B1
    • 2008-04-15
    • US10070107
    • 2000-08-31
    • Ruutu VilleTimo RantalainenMarko AlanenGudni Gunnarsson
    • Ruutu VilleTimo RantalainenMarko AlanenGudni Gunnarsson
    • G01S3/02
    • G01S11/02
    • The present invention relates to estimation of the distance between stations that communicate in a communication system over a radio interface. In the system at least one of the stations transmits signal bursts in time slots in accordance with a timing structure and at least one station receives the signal bursts. The method comprises determination of a first timing of a signal burst received at the receiving station, the first timing being associated with the first component of the received signal burst that meets a predefined condition. A second timing of the received signal burst is also determined for use in adjustment of internal timing of the receiving station for receiving and/or transmitting further signal bursts from and/or to the transmitting station. A timing offset is also determined between the stations. The distance between the stations is estimated based on the timing offset and the first timing of the received signal burst.
    • 本发明涉及通过无线电接口在通信系统中通信的站之间的距离的估计。 在系统中,至少一个站根据定时结构在时隙中发送信号脉冲串,并且至少一个站接收信号脉冲串。 该方法包括确定在接收站处接收的信号脉冲串的第一定时,第一定时与满足预定条件的接收信号脉冲串的第一分量相关联。 接收信号脉冲串的第二定时也被确定为用于调整接收站的内部定时,用于从发射站接收和/或发射另外的信号突发。 定时偏移也可以在站之间确定。 基于定时偏移和接收到的信号突发的第一定时来估计站之间的距离。