公开(公告)号：US20250137779A1

公开(公告)日：2025-05-01

申请号：US18977075

申请日：2024-12-11

Applicant: Polaris Wireless, Inc.

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

IPC: G01C5/06 ,  H04W64/00

Abstract: A method for providing an enhanced estimate of reference barometric pressure. The method uses multiple, dissimilar pressure references, such as in airport weather stations, personal weather stations, and wireless terminals such as smartphones, in order to provide the enhanced estimate of reference barometric pressure. The method generates an enhanced estimate of reference barometric pressure based on a first estimate of reference barometric pressure from a first pressure reference network made up of airport weather stations, for example. The method also uses a second estimate of reference barometric pressure from a second pressure reference network made of up personal weather stations, for example, and a third estimate of reference barometric pressure, also from the second network. The first, second, and third estimates of reference barometric pressure are combined such that both measurement accuracy and timeliness are improved in the resulting, enhanced estimate.

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.

公开(公告)号：US10716090B2

公开(公告)日：2020-07-14

申请号：US16743114

申请日：2020-01-15

Applicant: Polaris Wireless, Inc.

Inventor： Jerome Arthur Blaha, Jr. ,  Scot Douglas Gordon ,  Jonathan Shiao-en Lu ,  Jeffrey Noel Wu ,  Jian Jet Zhu

IPC: H04W64/00 ,  H04W4/30 ,  G06F16/29 ,  H04W4/021 ,  H04W4/33

Abstract: A technique for the estimation of the location of a wireless terminal. The disclosed technique considers boundaries that are represented in a geographic information system (GIS) database in combination with a first, unenhanced estimate of location, in order to generate a second, enhanced estimate of location. To do so, the technique generates a point cloud based on the first estimate of location. At least some of the data points in the point cloud are then removed, depending on their positions in relation to certain boundaries stored in the GIS database, such as the exterior walls of buildings and other structures. By considering these boundaries, the disclosed technique can increase the probability that the estimated location is within an area that is occupiable by a person, thereby providing a more reasonable result. The technique generates the second, enhanced estimate based on the distribution of the remaining data points.

公开(公告)号：US20200112831A1

公开(公告)日：2020-04-09

申请号：US16152468

申请日：2018-10-05

Applicant: Polaris Wireless, Inc.

Inventor： Jerome Arthur Blaha, JR. ,  Scot Douglas Gordon ,  Jonathan Shiao-en Lu ,  Jeffrey Noel Wu ,  Jian Zhu

IPC: H04W4/02 ,  H04W4/029

Abstract: A technique for developing a stack-effect compensation model that is representative of a structure, such as a particular building, and of generating an estimate of the elevation of a wireless terminal inside the structure by using the model. The technique includes estimating information related to one or more neutral pressure planes within the structure, at which the difference between the indoor barometric pressure and the outdoor barometric pressure is essentially zero. The technique leverages pressure and temperature measurements that are provided by one or more wireless terminals that are regularly present in the building. The stack-effect compensation model includes a parameter that represents, for each of a plurality of uncompensated elevations, the height of the particular uncompensated elevation above a neutral pressure plane. The location engine uses this height-information parameter from the compensation model, in order to develop the estimate of the elevation of the wireless terminal.

公开(公告)号：US20190313219A1

公开(公告)日：2019-10-10

申请号：US15992615

申请日：2018-05-30

Applicant: Polaris Wireless, Inc.

Inventor： Jain Zhu ,  Jonathan Shiao-en Lu

IPC: H04W4/33 ,  H04W4/021 ,  H04W4/38 ,  G01C5/06

Abstract: A data-processing system that estimates the particular building floors that are present in a particular building based on differences in barometric pressure measurements provided by wireless terminals. A wireless terminal can report one or more barometric pressure measurements at the ground floor of a building and one or more pressure measurements at one or more above- or below-ground floors, or “non-ground” floors. The data-processing system receives the pressure measurements and uses the difference in the pressure measurements to determine a change in height between the ground floor and a non-ground floor. When the system collects enough data from many wireless terminals, it is able to identify the floors that are present in a particular building and their non-ground heights. Then, when an estimate of the vertical location of a wireless terminal is provided to a location application, the system is able to provide the estimate in terms of building floor.