Nextnav, LLC

Freescale Semiconductor,inc.

Deepak Joseph

Ganesh Pattabiraman

Arun Raghupathy

Michael Dormody

Badrinath Nagarajan

Thomas George Wolf

Gary M Parsons

Christian Gates

Abijith Kumar

Frank Yenshaw

Subramanian S Meiyappan

Varaprasad Vajjhala

Robert Rovetta

John Ashenden

Guiyuan Han

Timothy R Miller

John W McCorkle

Richard D Roberts

William Shvodian

Andrew Sendonaris

Matthew L Welborn

Adrian R Macias

Paul Robert Runkle

Douglas E Price

Gerard P Lynch

Device-based barometric pressure sensor calibration involves determining a specific location of the mobile device; determining a general location of the mobile device that encompasses and obfuscates the specific location; transmitting the general location to a server; receiving general calibration data for the general location; determining specific calibration data based on the general calibration data and the specific location; determining a calibration value based on the specific calibration data, the calibration value being for calibrating the barometric pressure sensor.

Device based barometric pressure sensor calibration

Calibrating an unstable sensor of a mobile device. Systems and methods for calibrating a sensor of a mobile device determine a first estimated position of the mobile device without using any measurement from the sensor of the mobile device, generate a second estimated position of the mobile device using a measurement from the sensor, estimate a sensor error of the sensor using the first estimated position and the second estimated position, and use the sensor error to determine a calibration value for adjusting one or more measurements from the sensor.

Systems and methods for calibrating unstable sensors

Calibrating a pressure sensor of a mobile device includes determining a first plurality of calibration values for a first plurality of visits to a first revisit zone to which a mobile device repeatedly returns; determining a first relative calibration adjustment value based on the first plurality of calibration values; determining an adjusted absolute calibration value based on i) an absolute calibration value used to calibrate pressure measurements made by a pressure sensor of the mobile device, and ii) the first relative calibration adjustment value; and calibrating pressure measurements made by the pressure sensor of the mobile device using the adjusted absolute calibration value.

Calibrating a pressure sensor

Calibrating a pressure sensor of a mobile device incudes determining an absolute calibration value used to calibrate pressure measurements by a pressure sensor of a mobile device; determining a first revisit zone as a first location to which the mobile device repeatedly returns; determining first and second calibrations for first and second visits to the first revisit zone; determining a first relative calibration adjustment value based on a difference between the first and second calibrations; determining an adjusted absolute calibration value based on a sum of the absolute calibration value and the first relative calibration adjustment value; and estimating an altitude of the mobile device based on a pressure measurement by the pressure sensor and the adjusted absolute calibration value.

Display screen or portion thereof with graphical user interface

Determining if a receiver is inside or outside a building or area. Particular systems and methods for determining if a receiver is inside or outside a building determine an estimate of a position of a receiver, and use the estimate of the position of the receiver and other data to determine if the position of the receiver is inside a first building. The other data may include locations of geo-fences inside buildings, heights of buildings, or other types of data.

Systems and methods for determining if a receiver is inside or outside a building or area

Using estimates of a receiver's altitude to determine where a receiver is located and to refine a positioning system's estimate of a receiver's position. Systems and methods determine whether a receiver is inside or outside a building, and may use the determination to confirm or adjust an initial estimate of the receiver's position. Various approaches for making the determination and for assessing the initial estimate of the receiver's position are described.

Altitude-based indoor or outdoor detection

Acquiring three-dimensional location information, and using acquired three-dimension location information to locate users and enhance their experience in relation to location-based services.

Systems and methods for using three-dimensional location information to improve location services

Controlling access to position information at a receiver, or at another device external to the receiver. Various considerations, including a requested service type, a user type, a device type, a software application type, a payment, and/or other characteristics associated with a particular software application or distributor of that software application, may be used to control access to position information.

Systems and methods for providing conditional access to transmitted information

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Oakton, VA, United States of America

Deepak Joseph