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61. 发明申请

US20070207816A1 Location Estimation of Wireless Terminals Based on Combinations of Signal-Strength Measurements and Geometry-of-Arrival Measurements 审中-公开
标题翻译：基于信号强度测量和几何测量的无线终端的位置估计
公开(公告)号：US20070207816A1
公开(公告)日：2007-09-06
申请号：US11745141
申请日：2007-05-07
申请人： David Spain
发明人： David Spain
IPC分类号： H04Q7/20
CPC分类号： H04W64/00
摘要： A method and apparatus for estimating the location of a wireless terminal are disclosed. The location of the wireless terminal is estimated based on one or more signal strength measurements in conjunction with: (i) one or more angle-of-arrival measurements, (ii) one or more time-of-arrival measurements, or (iii) a combination of (i) and (ii). At each measurement time, the illustrative embodiment (a) determines the candidate locations for the wireless terminal, (b) computes a measurement likelihood function for any signal strength measurements that are available at that time, (c) computes a measurement likelihood function for any geometry-of-arrival measurements that are available at that time, (d) computes a joint likelihood function for all measurements available at that time, and (e) updates the location probability distribution for the wireless terminal with the joint measurement likelihood function. Estimates of the location of the wireless terminal are obtained from the location probability distribution.
摘要翻译：公开了一种用于估计无线终端的位置的方法和装置。无线终端的位置是基于一个或多个信号强度测量来估计的，结合：（i）一个或多个到达角度测量，（ii）一个或多个到达时间测量值，或（iii）（i）和（ii）的组合。在每个测量时间，说明性实施例（a）确定无线终端的候选位置，（b）计算当时可获得的任何信号强度测量的测量似然函数，（c）计算任何当时可用的几何到达测量，（d）计算当时可用的所有测量的联合似然函数，以及（e）用联合测量似然函数更新无线终端的位置概率分布。从位置概率分布中获得无线终端位置的估计。

62. 发明申请

US20060240845A1 Estimating the Location of a Wireless Terminal Based on the Traits of the Multipath Components of a Signal 有权
标题翻译：基于信号多路径分量的特征估计无线终端的位置
公开(公告)号：US20060240845A1
公开(公告)日：2006-10-26
申请号：US11419654
申请日：2006-05-22
申请人： Martin Feuerstein , Scot Gordon , David Spain
发明人： Martin Feuerstein , Scot Gordon , David Spain
IPC分类号： H04Q7/20
CPC分类号： G01S5/0252 , G01S5/0273 , G01S19/22 , G01S19/25 , G01S19/42 , H04W64/00
摘要： A technique for estimating the location of a wireless terminal at an unknown location in a geographic region is disclosed. The technique is based on the recognition that there are traits of electromagnetic signals that are dependent on topography, the receiver, the location of the transmitter, and other factors. For example, if a particular radio station is known to be received strongly at a first location and weakly at a second location, and a given wireless terminal at an unknown location is receiving the radio station weakly, it is more likely that the wireless terminal is at the second location than at the first location.
摘要翻译：公开了一种用于估计地理区域中的未知位置处的无线终端的位置的技术。该技术基于认识到存在依赖于地形，接收机，发射机的位置等因素的电磁信号的特征。例如，如果已知特定的无线电台在第一位置被强烈地接收并且在第二位置处较弱地接收，并且在未知位置的给定的无线终端较弱地接收无线电台，那么无线终端更有可能是在第二个位置比在第一个位置。

63. 发明授权

US11528584B2 Contact tracing based on comparing geo-temporal patterns of wireless terminals, including mobility profiles 有权
公开(公告)号：US11528584B2
公开(公告)日：2022-12-13
申请号：US17214840
申请日：2021-03-27
申请人： Polaris Wireless, Inc.
发明人： Anjui Bahuguna , Scot Douglas Gordon , Robert Lewis Martin
IPC分类号： H04W4/029 , H04W8/14 , G16H50/80 , G16H50/30 , G16H70/60 , H04W4/02
摘要： 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.

64. 发明授权

US11493642B2 Estimation of barometric pressure measurement bias by compensating for environment-related effects 有权
公开(公告)号：US11493642B2
公开(公告)日：2022-11-08
申请号：US17236588
申请日：2021-04-21
申请人： Polaris Wireless, Inc.
发明人： Jerome Arthur Blaha, Jr. , Scot Douglas Gordon , Jeffrey Noel Wu , Jian Zhu
IPC分类号： G01S19/40 , G01S19/48 , G01S19/39 , G01W1/10 , G01L19/00 , G01L27/00 , G01S5/02 , G01C5/06 , G01C21/00 , H04W4/029
摘要： 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. Each coarse estimate of elevation is often generated from noisy measurements, such as measurements of signals transmitted by Global Positioning System (GPS) satellites, and has an associated uncertainty. The location engine accounts for the uncertainty in these estimates of elevation by applying an optimal estimation technique, such as Kalman filtering, and by compensating for environment-related effects. Compensating Includes filtering across a plurality of lateral locations and imposing a lower bound of bias uncertainty at the lateral locations. Once the location engine generates the enhanced estimate of measurement bias, it can generate improved estimates of elevation of the wireless terminal.

65. 发明申请

US20210364653A1 Estimation of Barometric Pressure Measurement Bias by Compensating for Environment-Related Effects 有权
公开(公告)号：US20210364653A1
公开(公告)日：2021-11-25
申请号：US17236588
申请日：2021-04-21
申请人： Polaris Wireless, Inc.
发明人： Jerome Arthur Blaha, JR. , Scot Douglas Gordon , Jeffrey Noel Wu , Jian Zhu
IPC分类号： G01S19/48 , G01S5/02 , G01C5/06 , G01C21/00
摘要： 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. Each coarse estimate of elevation is often generated from noisy measurements, such as measurements of signals transmitted by Global Positioning System (GPS) satellites, and has an associated uncertainty. The location engine accounts for the uncertainty in these estimates of elevation by applying an optimal estimation technique, such as Kalman filtering, and by compensating for environment-related effects. Compensating includes filtering across a plurality of lateral locations and imposing a lower bound of bias uncertainty at the lateral locations. Once the location engine generates the enhanced estimate of measurement bias, it can generate improved estimates of elevation of the wireless terminal.

66. 发明授权

US10945126B2 Identifying mobile aliases 有权
公开(公告)号：US10945126B2
公开(公告)日：2021-03-09
申请号：US16286480
申请日：2019-02-26
申请人： Polaris Wireless, Inc.
发明人： Ankit Bansal , Ravi Gyani , Karthik Shashiraj , Arijit Mukherjee
IPC分类号： H04W4/021 , H04W12/00 , H04W12/12 , H04W8/02 , H04W8/18 , H04W64/00 , H04L29/12 , H04W60/00
摘要： 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.

67. 发明申请

US20210029663A1 Estimating the Location of a Reference Radio and Using the Estimated Location of the Reference Radio to Estimate the Location of a Wireless Terminal 有权
公开(公告)号：US20210029663A1
公开(公告)日：2021-01-28
申请号：US16939039
申请日：2020-07-26
申请人： Polaris Wireless, Inc.
发明人： Jonathan Shiao-en Lu
IPC分类号： H04W64/00 , H04W24/10 , H04B17/318 , H04W52/24 , G01S5/02
摘要： 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.

68. 发明授权

US10713827B2 System and method for graphical representation of spatial data based on selection of a time window 有权
公开(公告)号：US10713827B2
公开(公告)日：2020-07-14
申请号：US16779617
申请日：2020-02-02
申请人： Polaris Wireless, Inc.
发明人： Mitul Bhat , Pratik Dhebri
IPC分类号： G06T11/20 , G06F3/0484 , G09G5/14 , G06F16/29 , H04L12/26 , G06F3/14 , G06F3/0482
摘要： A system and method for graphical representation of spatial data. A disclosed video display system is capable of presenting a layout of graphics objects as part of a displayed image. The system provides in the displayed image i) a first graphical representation in a first display area of a display and ii) a diagrammatic representation in a second display area. The diagrammatic representation features superimposed graphical elements that are dependent on the first graphical representation. The video display system can provide, for example, a pie chart as the first graphical representation and a map of a geographic area as the diagrammatic representation. The pie chart graphically represents, for example, a breakdown of members by organization, wherein each slice in the pie chart corresponds to a different organization. Superimposed on the map are elements of a bar chart, which is another example of a graphical representation.

69. 发明授权

US10602326B2 Detection of the occurrence of an event, based on barometric pressure measurements 有权
公开(公告)号：US10602326B2
公开(公告)日：2020-03-24
申请号：US15791397
申请日：2017-10-23
申请人： Polaris Wireless, Inc.
发明人： Jerome Arthur Blaha, Jr.
IPC分类号： H04W4/33 , G01C5/06 , H04W12/12 , H04W12/00 , H04W4/38 , G01S5/02 , G08B13/08 , G08B13/16
摘要： A technique for detecting the occurrence of an event, and for estimating other event-related information, by analyzing the barometric pressure in the vicinity of one or more wireless terminals. The disclosed detection technique is based on the recognition that the barometric sensor on various wireless terminals, such as smartphones, is capable of measuring very subtle changes in the atmospheric pressure. The disclosed detection technique is also based on the additional recognition of how some of the changes in the atmospheric pressure, as measured by a wireless terminal, correlate to various events that occur within a building or other defined area. For example, the disclosed technique can detect an entry door opening or closing by analyzing a resultant pressure wave having a particular transient that is perceptible by one or more wireless terminals in the area and analyzed by a detection engine.

70. 发明授权

US10560839B1 System and method for mobile alias identification 有权
公开(公告)号：US10560839B1
公开(公告)日：2020-02-11
申请号：US16286488
申请日：2019-02-26
申请人： Polaris Wireless, Inc.
发明人： Ankit Bansal , Ravi Gyani , Karthik Shashiraj , Arijit Mukherjee
IPC分类号： H04W12/00 , H04W8/02 , H04W4/021 , H04L29/12 , H04W8/18 , H04W64/00 , H04W12/12 , H04W60/00
摘要： 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.

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