公开(公告)号：US20080214184A1

公开(公告)日：2008-09-04

申请号：US12026352

申请日：2008-02-05

申请人： John CARLSON ,  Martin Alles ,  George Maher ,  Selcuk Mazlum

发明人： John CARLSON ,  Martin Alles ,  George Maher ,  Selcuk Mazlum

IPC分类号： H04Q7/20

CPC分类号： G01S5/021 ,  G01S5/0252 ,  G01S5/0257 ,  H04W4/02

摘要： A system and method to re-calibrate an area of a wireless communications network that has been exposed to one or more network configuration changes is disclosed. When one or more attributes of the wireless network undergo a change which impairs the geo-location capability to locate a mobile station, it can be detrimental to the safety and well being of the network users. Geo-location calculations rely on accurate and updated calibration data to correctly locate a mobile station. In some instances, it may be necessary to update the calibration data for areas of the network that have been exposed to network configuration changes. Modifying previously collected calibration data to account for changes that have occurred in the network may increase the accuracy of mobile station location estimation.

摘要翻译： 公开了一种重新校准已经暴露于一个或多个网络配置变化的无线通信网络的区域的系统和方法。 当无线网络的一个或多个属性经历改变以损害定位移动站的地理位置能力时，可能对网络用户的安全性和安全性是不利的。 地理位置计算依靠准确和更新的校准数据来正确定位移动台。 在某些情况下，可能需要更新已经暴露于网络配置更改的网络区域的校准数据。 修改先前收集的校准数据以解决网络中发生的变化可能会增加移动台位置估计的准确性。

公开(公告)号：US20090131073A1

公开(公告)日：2009-05-21

申请号：US12104250

申请日：2008-04-16

申请人： John CARLSON ,  Tariqul ISLAM ,  Selcuk MAZLUM

发明人： John CARLSON ,  Tariqul ISLAM ,  Selcuk MAZLUM

IPC分类号： H04W24/00

CPC分类号： H04W24/10 ,  G01S5/0205 ,  G01S5/10 ,  G01S19/46 ,  H04W64/00 ,  H04W84/04

摘要： A system and method for estimating a location of a wireless device receiving signals from a plurality of nodes of a communication system. A first value may be determined based on a network timing characteristic for one of the nodes, and a second value may be determined based on a network measurement report characteristic. An observed time difference of arrival (“OTDOA”) hyperbola may then be calculated based on the first and second values, and a location of the wireless device estimated as a function of the OTDOA hyperbola.

摘要翻译： 一种用于估计从通信系统的多个节点接收信号的无线设备的位置的系统和方法。 可以基于节点之一的网络定时特性来确定第一值，并且可以基于网络测量报告特性来确定第二值。 然后可以基于第一和第二值以及作为OTDOA双曲线的函数估计的无线设备的位置来计算观察到的到达时间差（“OTDOA”）双曲线。

公开(公告)号：US20100087204A1

公开(公告)日：2010-04-08

申请号：US12246156

申请日：2008-10-06

申请人： Tariqul ISLAM ,  John CARLSON ,  Khalid Al-Mufti ,  Ariful HANNAN

发明人： Tariqul ISLAM ,  John CARLSON ,  Khalid Al-Mufti ,  Ariful HANNAN

IPC分类号： H04W4/00 ,  H04W84/10

CPC分类号： H04W24/00 ,  G01S5/0215 ,  H04W64/00

摘要： A system and method for estimating a location of a wireless device in a wireless communication system having a plurality of nodes and a plurality of location measurement units (“LMUs”). A set of signal samples from a first wireless device and a second wireless device may be collected by one or more LMUs in a search window. A first time of arrival (“TOA”) is determined, and a second search window is estimated as a function of the first TOA. A second TOA may be determined within the second search window at a second node or one of the LMUs from the set of signal samples. A range estimate of the wireless device may then be determined, and an estimated location of the wireless device may be determined as a function of the first uplink TOA, the second uplink TOA, or the range estimate and second TOA.

摘要翻译： 一种用于在具有多个节点和多个位置测量单元（“LMU”）的无线通信系统中估计无线设备的位置的系统和方法。 来自第一无线设备和第二无线设备的一组信号样本可以由搜索窗口中的一个或多个LMU收集。 第一次到达（“TOA”）被确定，并且第二个搜索窗口被估计为第一个TOA的函数。 可以在第二个节点的第二个搜索窗口中确定第二个TOA，或者从该组信号样本中确定一个LMU。 然后可以确定无线设备的范围估计，并且可以根据第一上行链路TOA，第二上行链路TOA或范围估计和第二TOA来确定无线设备的估计位置。