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    • 3. 发明授权
    • System and method for locating WiMAX or LTE subscriber stations
    • 用于定位WiMAX或LTE用户站的系统和方法
    • US08731457B2
    • 2014-05-20
    • US12951550
    • 2010-11-22
    • Tariqul IslamJohn Carlson
    • Tariqul IslamJohn Carlson
    • H04H20/71H04W24/00
    • H04W64/00H04W24/10
    • A system and method for estimating a location of a subscriber station receiving a first signal from a first base station and receiving a second signal from a second base station where the first and second base stations are nodes in a WiMAX or LTE network. A message may be received from the subscriber station containing first and second information, and a range ring determined from the first base station using the first information. A location hyperbola may be determined using the second information wherein the location hyperbola has the first and second base stations as foci. A location of the subscriber station may be estimated using the range ring and the location hyperbola.
    • 一种用于估计从第一基站接收第一信号的用户台的位置并从第二基站接收第二信号的系统和方法,其中所述第一和第二基站是WiMAX或LTE网络中的节点。 可以从用户站接收包含第一和第二信息的消息,以及使用第一信息从第一基站确定的范围环。 可以使用第二信息来确定位置双曲线,其中位置双曲线具有第一和第二基站作为焦点。 可以使用范围环和位置双曲线来估计订户站的位置。
    • 6. 发明授权
    • Method and apparatus to select an optimum site and/or sector to provide geo-location data
    • 选择最佳位置和/或扇区以提供地理位置数据的方法和装置
    • US08428617B2
    • 2013-04-23
    • US12974897
    • 2010-12-21
    • George MaherAnanth KalenahalliJohn Carlson
    • George MaherAnanth KalenahalliJohn Carlson
    • H04W24/00
    • G01S5/0205G01S5/02H04W64/00
    • A system and method selects secondary base stations to task that provide geo-location information used to geo-locate a mobile station. A network overlay location system may be co-located at base station sites of a wireless communications network. The location measurement units of the network overlay system provide location information of the mobile station, which may be determined via one or more geo-location techniques, for example: time of arrival (TOA), time difference of arrival (TDOA), uplink time difference of arrival (UTDOA), angle of arrival (AOA), signal power, radio fingerprinting etc. Selecting secondary base stations to task using various selection criteria may provide optimum results when geo-locating a mobile station.
    • 系统和方法选择辅助基站来提供用于对移动站进行地理定位的地理位置信息的任务。 网络覆盖定位系统可以位于无线通信网络的基站站点处。 网络覆盖系统的位置测量单元提供可以经由一个或多个地理位置技术确定的移动站的位置信息,例如:到达时间(TOA),到达时间差(TDOA),上行链路时间 到达差异(UTDOA),到达角度(AOA),信号功率,无线电指纹识别等。使用各种选择标准选择辅助基站进行任务可以在移动台定位时提供最佳结果。
    • 8. 发明授权
    • System and method for optimizing location estimate of mobile unit
    • 优化移动单元位置估计的系统和方法
    • US08311018B2
    • 2012-11-13
    • US12014018
    • 2008-01-14
    • John CarlsonMartin AllesGeorge MaherSelcuk Mazlum
    • John CarlsonMartin AllesGeorge MaherSelcuk Mazlum
    • H04J3/00
    • G01S5/021G01S5/0252G01S5/0257H04W4/02
    • The location of a wireless mobile device may be estimated using, at least in part, one or more pre-existing Network Measurement Reports (“NMRs”) which include calibration data for a number of locations within a geographic region. The calibration data for these locations is gathered and analyzed so that particular grid points within the geographic region can be determined and associated with a particular set or sets of calibration data from, for example, one or more NMRs. Embodiments of the present subject matter also provide a method of improving a location estimate of a mobile device. Received signal level measurements reported by a mobile device for which a location estimate is to be determined may be evaluated and/or compared with the characteristics associated with the various grid points to estimate the location of the mobile device.
    • 可以使用至少部分地,一个或多个预先存在的网络测量报告(NMR)来估计无线移动设备的位置,所述网络测量报告(NMR)包括地理区域内的多个位置的校准数据。 收集和分析这些位置的校准数据,使得可以确定地理区域内的特定网格点并且与例如一个或多个NMR的特定的校准数据集合相关联。 本主题的实施例还提供了一种改进移动设备的位置估计的方法。 可以对要由其确定位置估计的移动装置报告的接收信号电平测量结果可与各种网格点相关联的特性进行评估和/或比较,以估计移动装置的位置。
    • 10. 发明申请
    • UPLINK SIGNAL DETECTION IN RF REPEATERS
    • 射频中继器上行信号检测
    • US20100329311A1
    • 2010-12-30
    • US12491371
    • 2009-06-25
    • Ariful HannanJohn Carlson
    • Ariful HannanJohn Carlson
    • H04B1/707
    • H04B7/15535H04B1/70718
    • A method for detecting an IS-95 signal without knowledge of a spreading code for the IS-95 signal is provided. A received baseband signal is rotated through a plurality of phase-shifts. For each phase-shifted baseband signal, an in-phase component or a quadrature component of the phase-shifted baseband signal is realigned. The in-phase and quadrature components are multiplied by a PN short code to partially despread the components. The partially despread in-phase and quadrature components are multiplied and integrated. The integrated despread in-phase and quadrature components are compared to a threshold value. In response to exceeding the threshold value, the received baseband signal is identified as an IS-95 signal. The method may be implemented on a repeater for repeating signals between multiple sources.
    • 提供了一种在不了解IS-95信号的扩展码的情况下检测IS-95信号的方法。 接收到的基带信号通过多个相移旋转。 对于每个相移基带信号,重新对准相移基带信号的同相分量或正交分量。 同相和正交分量乘以PN短码以部分地解扩组件。 将部分解扩的同相和正交分量相乘并积分。 将集成的解扩同相和正交分量与阈值进行比较。 响应于超过阈值,接收的基带信号被识别为IS-95信号。 该方法可以在中继器上实现,用于在多个源之间重复信号。