公开(公告)号：US20100329144A1

公开(公告)日：2010-12-30

申请号：US12877774

申请日：2010-09-08

Applicant: Tarun Kumar Bhattacharya ,  Martin Feuerstein ,  David Stevenson Spain

Inventor： Tarun Kumar Bhattacharya ,  Martin Feuerstein ,  David Stevenson Spain

IPC: H04J3/14

CPC classification number: H04W64/00 ,  G01S5/0252

Abstract: A process and machine for estimating the location of a wireless terminal is disclosed. The illustrative embodiment of the present invention is based on the observation that the signal strength of a signal from a transmitter is different at some locations, and, therefore, the location of a wireless terminal can be estimated by comparing the signal strength it currently observes against a map or database that correlates locations to signal strengths. In accordance with a first example, if a particular radio station is known to be received well at a first location and poorly at a second location, and a given wireless terminal at an unknown location is receiving the radio station poorly, it is more likely that the wireless terminal is at the second location than it is at the first location.

Abstract translation: 公开了一种用于估计无线终端的位置的过程和机器。 本发明的说明性实施例基于以下观察：来自发射机的信号的信号强度在某些位置不同，因此无线终端的位置可以通过将当前观察到的信号强度与 将位置与信号强度相关联的地图或数据库。 根据第一示例，如果已知在第一位置处良好地接收特定无线电台并且在第二位置处不良地接收到特定无线电台，并且在未知位置处的给定无线终端正在接收无线电台，则更可能的是， 无线终端处于比在第一位置处的第二位置。

公开(公告)号：US06944465B2

公开(公告)日：2005-09-13

申请号：US10299398

申请日：2002-11-18

Applicant: David Stevenson Spain ,  Robert Lewis Martin ,  Luis Perez-Breva

Inventor： David Stevenson Spain ,  Robert Lewis Martin ,  Luis Perez-Breva

IPC: G01S5/02 ,  G01S19/09 ,  G01S19/46 ,  H04W64/00 ,  H04Q7/20 ,  H04M11/04

CPC classification number: G01S5/0252 ,  H04W64/00

Abstract: A method for determining the location of a mobile unit (mobile unit) in a wireless communication system is disclosed. The illustrative embodiment provides a computationally-efficient technique for reducing the number of possible positions that have to be analyzed. In particular, the illustrative embodiment eliminates possible positions for the mobile unit from consideration by considering which signals the mobile unit can—and cannot—receive and the knowledge of where those signals can and cannot be received.

Abstract translation: 公开了一种在无线通信系统中确定移动单元（移动单元）的位置的方法。 说明性实施例提供了用于减少必须分析的可能位置的数量的计算有效的技术。 特别地，说明性实施例通过考虑移动单元可以接收和不能接收哪些信号以及这些信号可以而且不能被接收的位置来消除移动单元的可能位置。

公开(公告)号：US20080299995A1

公开(公告)日：2008-12-04

申请号：US12191772

申请日：2008-08-14

Applicant: David Stevenson Spain

Inventor： David Stevenson Spain

IPC: H04Q7/20

CPC classification number: H04W64/00 ,  G01S5/0252

Abstract: A method of estimating the location of a wireless terminal is disclosed that is ideally suited for use with legacy systems. The illustrative embodiment of the present invention is based on the observation that the signal strength of a signal from a transmitter is different at some locations, and, therefore, the location of a wireless terminal can be estimated by comparing the signal strength it currently observes against a map or database that correlates locations to signal strengths. For example, if a particular radio station is known to be received well at a first location and poorly at a second location, and a given wireless terminal at an unknown location is receiving the radio station poorly, it is more likely that the wireless terminal is at the second location than it is at the first location.

Abstract translation: 公开了一种估计无线终端的位置的方法，其理想地适合于与传统系统一起使用。 本发明的说明性实施例基于以下观察：来自发射机的信号的信号强度在某些位置不同，因此无线终端的位置可以通过将当前观察到的信号强度与 将位置与信号强度相关联的地图或数据库。 例如，如果已知在第一位置处良好地接收特定的无线电台并且在第二位置处不良地接收到特定的无线电台，并且在未知位置处的给定的无线终端正在接收无线电台，那么无线终端更可能是 在第二个位置比它在第一个位置。

公开(公告)号：US07460505B2

公开(公告)日：2008-12-02

申请号：US10357645

申请日：2003-02-04

Applicant: David Stevenson Spain

Inventor： David Stevenson Spain

IPC: H04Q7/00

CPC classification number: H04W64/00 ,  G01S5/0252

Abstract: A method of estimating the location of a wireless terminal is disclosed that is ideally suited for use with legacy systems. The illustrative embodiment of the present invention is based on the observation that the signal strength of a signal from a transmitter is different at some locations, and, therefore, the location of a wireless terminal can be estimated by comparing the signal strength it currently observes against a map or database that correlates locations to signal strengths. For example, if a particular radio station is known to be received well at a first location and poorly at a second location, and a given wireless terminal at an unknown location is receiving the radio station poorly, it is more likely that the wireless terminal is at the second location than it is at the first location.

Abstract translation: 公开了一种估计无线终端的位置的方法，其理想地适合于与传统系统一起使用。 本发明的说明性实施例基于以下观察：来自发射机的信号的信号强度在某些位置不同，因此无线终端的位置可以通过将当前观察到的信号强度与 将位置与信号强度相关联的地图或数据库。 例如，如果已知在第一位置处良好地接收特定的无线电台并且在第二位置处不良地接收到特定的无线电台，并且在未知位置处的给定的无线终端正在接收无线电台，那么无线终端更可能是 在第二个位置比它在第一个位置。

公开(公告)号：US08712428B2

公开(公告)日：2014-04-29

申请号：US10668634

申请日：2003-09-23

Applicant: David Stevenson Spain

Inventor： David Stevenson Spain

IPC: H04W24/00

CPC classification number: H04W64/00 ,  G01S5/0252

Abstract: A method of estimating the location of a wireless terminal without the addition of hardware to either the wireless terminal or to the telecommunication system's base stations is disclosed. The illustrative embodiment of the present invention is based on the observation that the signal strength of a signal from a transmitter is different at some locations, and, therefore, the location of a wireless terminal can be estimated by comparing the signal strength it currently observes against a map or database that correlates locations to signal strengths. Furthermore, the illustrative embodiment deduces the signal strength of the serving base station's control channel signal at the wireless terminal, RD, based on the principal of reciprocity.

Abstract translation: 公开了一种在无需向无线终端或电信系统的基站添加硬件的情况下估计无线终端的位置的方法。 本发明的说明性实施例基于以下观察：来自发射机的信号的信号强度在某些位置不同，因此无线终端的位置可以通过将当前观察到的信号强度与 将位置与信号强度相关联的地图或数据库。 此外，说明性实施例基于互易原则推断无线终端RD处的服务基站的控制信道信号的信号强度。

公开(公告)号：US20080214208A1

公开(公告)日：2008-09-04

申请号：US12105855

申请日：2008-04-18

Applicant: Scot Douglas Gordon ,  Robert Lewis Martin ,  David Stevenson Spain

Inventor： Scot Douglas Gordon ,  Robert Lewis Martin ,  David Stevenson Spain

IPC: G01S5/02 ,  H04Q7/20

CPC classification number: H04W64/00 ,  G01S5/0252 ,  G01S19/06 ,  G01S19/17 ,  G01S19/252 ,  H04W4/04

Abstract: A method of using a non-GPS-derived technique to estimate the location of an Assisted-GPS-enabled wireless terminal for the purposes of generating location-specific assistance data for the wireless terminal is disclosed. The wireless terminal then uses the assistance data to acquire and process one or more GPS signals and to derive information that is probative of the wireless terminal's location. The GPS-derived location information is then combined with non-GPS-derived location to form an estimate of the location of the wireless terminal that is better than can be derived from either alone. This combination of GPS-derived and non-GPS techniques is particularly useful when the wireless terminal can only acquire one or two GPS signals because it is not possible to determine the location of the wireless terminal with only two GPS signals alone.