公开(公告)号：US08068802B2

公开(公告)日：2011-11-29

申请号：US12877774

申请日：2010-09-08

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

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

IPC: H04B7/00

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：US20110187525A1

公开(公告)日：2011-08-04

申请号：US12696977

申请日：2010-01-29

Applicant: Tarun Kumar Bhattacharya ,  Hassan M. El-Sallabi ,  Scot Douglas Gordon

Inventor： Tarun Kumar Bhattacharya ,  Hassan M. El-Sallabi ,  Scot Douglas Gordon

IPC: G08B1/08

CPC classification number: G08B1/08

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.

Abstract translation: 公开了一种使用非GPS导出技术估计辅助GPS功能的无线终端的位置，以便为无线终端生成位置特定辅助数据的目的。 然后，无线终端使用辅助数据来获取和处理一个或多个GPS信号，并且导出证明无线终端的位置的信息。 然后将GPS导出的位置信息与非GPS导出的位置相结合，以形成无线终端位置的估计，该估计优于单独导出的。 当无线终端只能获取一个或两个GPS信号时，GPS导出和非GPS技术的这种组合是特别有用的，因为不可能仅仅使用两个GPS信号来确定无线终端的位置。

公开(公告)号：US20110156950A1

公开(公告)日：2011-06-30

申请号：US12651013

申请日：2009-12-31

Applicant: Tarun Kumar Bhattacharya ,  Hassan M. El-Sallabi ,  Scot Douglas Gordon ,  Yasuhiro Oda ,  Jiyun Shen

Inventor： Tarun Kumar Bhattacharya ,  Hassan M. El-Sallabi ,  Scot Douglas Gordon ,  Yasuhiro Oda ,  Jiyun Shen

IPC: G01S19/48

CPC classification number: G01S19/48 ,  G01S5/0036

Abstract: It is an object of the present invention to perform positioning at favorable positioning precision and in a favorable positioning time, according to whether a receiver is indoors or outdoors. A positioning server 10 comprises a reception state information acquisition component 12 that acquires reception state information indicating the reception state of a radio wave at a cellular terminal 20, a base station positioning calculator 13 that estimates the position of the cellular terminal 20 on the basis of the reception state information, an end decision component 14 that decides whether or not to end the position estimation on the basis of a specific end condition, and, if it is decided not to end, estimates the position of the cellular terminal 20 on the basis of new reception state information, an indoor/outdoor determination component 15 that determines whether the cellular terminal 20 is indoors or outdoors on the basis of the reception state information, and an end condition determination component 16 that determines the specific end condition on the basis of a result of determination by the indoor/outdoor determination component 15.

Abstract translation: 本发明的目的是根据接收机是否在室内或室外，以有利的定位精度和有利的定位时间进行定位。 定位服务器10包括：接收状态信息获取部件12，其获取表示蜂窝终端20的无线电波的接收状态的接收状态信息;基站定位计算器13，基于以下方式估计蜂窝终端20的位置; 接收状态信息，决定是否根据特定的结束条件结束位置估计的结束判定部件14，如果决定不结束，则基于该基准估计蜂窝终端20的位置 新的接收状态信息的室内/室外确定组件15，根据接收状态信息确定蜂窝终端20是否在室内或室外;以及结束条件确定组件16，其基于 由室内/户外确定部件15确定的结果。

公开(公告)号：US07848762B2

公开(公告)日：2010-12-07

申请号：US12105855

申请日：2008-04-18

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

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

IPC: H04W24/00

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.

Abstract translation: 公开了一种使用非GPS导出技术估计辅助GPS功能的无线终端的位置，以便为无线终端生成位置特定辅助数据的目的。 然后，无线终端使用辅助数据来获取和处理一个或多个GPS信号，并且导出证明无线终端的位置的信息。 然后将GPS导出的位置信息与非GPS导出的位置相结合，以形成无线终端位置的估计，该估计优于单独导出的。 当无线终端只能获取一个或两个GPS信号时，GPS导出和非GPS技术的这种组合是特别有用的，因为不可能仅仅使用两个GPS信号来确定无线终端的位置。

公开(公告)号：US11877207B2

公开(公告)日：2024-01-16

申请号：US16939039

申请日：2020-07-26

Applicant: Polaris Wireless, Inc.

Inventor： Jonathan Shiao-en Lu

IPC: H04W4/029 ,  H04W24/10 ,  G01S5/02 ,  H04B17/318 ,  H04W52/24 ,  H04W64/00 ,  G01S11/06 ,  G01S5/00 ,  H04W4/02 ,  H04W48/16

CPC classification number: H04W4/029 ,  G01S5/012 ,  G01S5/0284 ,  G01S5/02521 ,  G01S11/06 ,  H04B17/318 ,  H04W4/023 ,  H04W24/10 ,  H04W48/16 ,  H04W52/242 ,  H04W64/003

Abstract: A location engine uses the empirical measurements made by a scouting wireless terminal (i) to discover the existence of a reference radio within a geographic region; (ii) to generate an estimate of the location of the newly-discovered reference radio, and (iii) to generate an estimate of the transmission power of the downlink control channel radio signal transmitted by the newly-discovered reference radio. The location engine then uses: (i) the estimate of the location of the newly-discovered reference radio, and (ii) the estimate of the transmission power of the downlink control channel radio signal transmitted by the newly-discovered reference radio, and (iii) measurements, made by a user wireless terminal, of the power of each of the downlink control channel radio signals transmitted by each of the reference radios to generate an estimate of the location of the user wireless terminal.

公开(公告)号：US11467291B2

公开(公告)日：2022-10-11

申请号：US17236592

申请日：2021-04-21

Applicant: Polaris Wireless, Inc.

Inventor： Jerome Arthur Blaha, Jr. ,  Scot Douglas Gordon ,  Jeffrey Noel Wu ,  Jian Zhu

IPC: G01S19/39 ,  G01W1/10 ,  G01L19/00 ,  G01L27/00 ,  G01S5/02 ,  G01C5/06 ,  G01C21/00 ,  G01S19/48 ,  H04W4/029

Abstract: A method for estimating the pressure measurement bias of a barometric sensor in a wireless terminal. A location engine using the method generates an enhanced estimate of the measurement bias. The location engine generates the enhanced estimate based in part on relatively coarse estimates of the elevation of the wireless terminal. The coarse estimates are used to generate instantaneous estimates of measurement bias and bias uncertainty. As needed, the location engine adjusts the instantaneous estimate of bias uncertainty, in order to reflect an instantaneous estimate of measurement bias that is recognized as being in error. The adjustment is based on what is expected as a probable measurement bias value for the particular wireless terminal. Once the location engine generates the enhanced estimate of measurement bias, it can generate improved estimates of elevation of the wireless terminal.

公开(公告)号：US11368813B2

公开(公告)日：2022-06-21

申请号：US16939040

申请日：2020-07-26

Applicant: Polaris Wireless, Inc.

Inventor： Jonathan Shiao-En Lu

IPC: H04W24/00 ,  H04W4/029 ,  H04W24/10 ,  G01S5/02 ,  H04B17/318 ,  H04W52/24 ,  H04W64/00 ,  G01S11/06 ,  G01S5/00 ,  H04W4/02 ,  H04W48/16

Abstract: A location engine uses the empirical measurements made by a scouting wireless terminal (i) to discover the existence of a reference radio within a geographic region; (ii) to generate an estimate of the location of the newly-discovered reference radio, and (iii) to generate an estimate of the transmission power of the downlink control channel radio signal transmitted by the newly-discovered reference radio. The location engine then uses: (i) the estimate of the location of the newly-discovered reference radio, and (ii) the estimate of the transmission power of the downlink control channel radio signal transmitted by the newly-discovered reference radio, and (iii) measurements, made by a user wireless terminal, of the power of each of the downlink control channel radio signals transmitted by each of the reference radios to generate an estimate of the location of the user wireless terminal.

公开(公告)号：US20210321217A1

公开(公告)日：2021-10-14

申请号：US17214840

申请日：2021-03-27

Applicant: Polaris Wireless, Inc.

Inventor： Anjul Bahuguna ,  Scot Douglas Gordon ,  Robert Lewis Martin

IPC: H04W4/02 ,  H04W4/029 ,  H04W8/14

Abstract: A method for performing contact tracing. An analysis system performing the method receives geo-temporal data comprising location data points for various wireless terminals, including the wireless terminal being used by a person diagnosed as having a specified disease and the wireless terminals of people who possibly have come in contact with the infected person. Based on filtering the geo-temporal data, the analysis system generates relatively-condensed mobility profiles that are representative of each person's locations and movements, and analyzes the mobility profiles. Through careful selections of various parameters based on the disease that is being analyzed, the mobility profiles are used instead of the relatively large amounts of geo-temporal data, to represent users of wireless terminals and to determine their interactions in regard to disease transmission.

公开(公告)号：US20210293586A1

公开(公告)日：2021-09-23

申请号：US17226833

申请日：2021-04-09

Applicant: Polaris Wireless, Inc.

Inventor： Jerome Arthur Blaha, JR.

IPC: G01D5/42 ,  H04W4/02 ,  G01L19/08

Abstract: A method for estimating the location of a wireless terminal at an unknown location, such as within a building. A location engine using the disclosed method receives and uses samples of barometric pressure measured by the wireless terminal to generate a characterization of a pressure wave in the vicinity of the wireless terminal. The location engine generates an estimate of the location of the wireless terminal based on the characterization of the pressure wave and, in some cases, the location of the source of the pressure wave, such as a building's door that is opening or closing. The location engine also bases the estimate of the wireless terminal's location on a propagation characteristic of the pressure wave, such as its speed of propagation.

公开(公告)号：US20200275265A1

公开(公告)日：2020-08-27

申请号：US16286480

申请日：2019-02-26

Applicant: Polaris Wireless, Inc.

Inventor： Ankit Bansal ,  Ravi Gyani ,  Karthik Shashiraj ,  Arijit Mukherjee

IPC: H04W12/00 ,  H04W12/12 ,  H04W8/02 ,  H04L29/12 ,  H04W8/18 ,  H04W4/021 ,  H04W64/00

Abstract: A system and method according to the principles of the invention identifies mobile phone aliases. The system processes mobile location data and call event data to generate mobility profiles. The profiles indicate a mobile's geographic zone history over a specified time. To produce a mobility profile, the system aggregates location data into zones and associates the zones with times of day, week or month. Particular zones for different mobiles can be compared according to weighting algorithms to provide data indicating whether the mobiles belong to the same user.