Stephen J Beauregard

US Patent:

20140050257, Feb 20, 2014

Filed:

Mar 1, 2013

Appl. No.:

13/782888

Inventors:

Stephen J. BEAUREGARD - San Jose CA, US

Assignee:

QUALCOMM INCORPORATED - San Diego CA

International Classification:

H04L 12/26

US Classification:

375224

Abstract:

Techniques are provided for deriving speed estimates by performing a convolution of the output of the Fast Fourier Transform (FFT) stage from different time windows in an orthogonal frequency-division multiplexing (OFDM) modulation scheme. Such techniques enable speed estimation to be performed in the frequency domain, requiring little or no modification to existing OFDM systems.

US Patent:

20130016012, Jan 17, 2013

Filed:

Jul 12, 2012

Appl. No.:

13/548032

Inventors:

Stephen J. Beauregard - Santa Clara CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

G01S 3/02

US Classification:

342450

Abstract:

Disclosed are methods, systems and apparatuses for computing position fixes according to a motion model. Particles may be propagated based, at least in part, on measurements received at a mobile device according to the motion model. A particular cluster of the propagated particles may then be selected to represent a state of the mobile device based, at least in part, on weights applied to particles in the clusters. The selected clusters may be retroactively changed so that the sequence of position fixes satisfies geometrical and dynamic feasibility constraints. The updated sequence of position fixes can be made available to high-level navigation applications for instance for user track display updating.

US Patent:

20150327017, Nov 12, 2015

Filed:

May 8, 2014

Appl. No.:

14/273392

Inventors:

- San Diego CA, US
Stephen Joseph Beauregard - San Jose CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04W 4/02
G01S 5/14
G01S 19/24

Abstract:

Methods, devices, and systems are described for determining whether a mobile device is in a stopped state based at least in part on round trip time (RTT) measurements between the device and at least one access point. The stopped state determination may be based on RTT measurements alone, or on RTT measurements in combination with other positioning and movement measurements. Further, filtering such as particle and Kalman filtering may be used to improve determination of whether the device is in a stopped state.

US Patent:

20140253384, Sep 11, 2014

Filed:

Mar 11, 2013

Appl. No.:

13/794269

Inventors:

- San Diego CA, US
Stephen J. Beauregard - San Jose CA, US
Weihua GAO - San Jose CA, US
Sai Pradeep VENKATRAMAN - Santa Clara CA, US
Amir A. EMADZADEH - Santa Clara CA, US
Sundar RAMAN - Fremont CA, US
Gengsheng ZHANG - Cupertino CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

G01S 5/02

US Classification:

342386

Abstract:

Various methods, apparatuses and/or articles of manufacture are provided which may be implemented in one or more electronic devices supporting mobile device positioning within an indoor environment. Tiered positioning assistance data (tiered-PAD) corresponding to an indoor environment may be generated and/or distributed. Mobile device positioning and/or navigation capabilities may be based, at least in part, on tiered-PAD corresponding to the indoor environment. Tiered-PAD may be provided to a plurality of mobile devices. A given mobile device may, for example, select applicable portion(s) of tiered-PAD to affect one or more positioning functions and/or the like which may be performed, at least in part, by the mobile device.

US Patent:

20140253389, Sep 11, 2014

Filed:

Mar 8, 2013

Appl. No.:

13/791853

Inventors:

- San Diego CA, US
Stephen J. Beauregard - San Jose CA, US

Assignee:

QUALCOMM INCORPORATED - San Diego CA

International Classification:

G01S 5/02

US Classification:

342458

Abstract:

System and methods are disclosed to use ultrasonic (US) and WiFi signals to improve range determination between devices in WiFi-based position or range estimation systems. Such systems may leverage existing WiFi infrastructure and US-capable sensors such as speakers and microphones as US transducers. US ranging between devices may be performed using round-trip time (RTT) or one-way measurements. To enable US ranging between a device and multiple US transmitters simultaneously, the US signal from each US transmitters or from the device may be modulated with a unique pseudo-random number (PRN) using direct sequence spread spectrum (DSSS). The transmission of US signals may be synchronized with the transmission of WiFi beacons which may contain data fields that contain the PRN sequence used to modulate the synchronous US signal. In RTT ranging, a receiving device receiving an US signal transmission may respond with its own PRN-modulated US signal synchronized to its WiFi beacon.

US Patent:

20140097988, Apr 10, 2014

Filed:

Oct 5, 2012

Appl. No.:

13/646276

Inventors:

- San Diego CA, US
Stephen Joseph BEAUREGARD - Santa Clara CA, US

International Classification:

G01S 11/04

US Classification:

342461

Abstract:

Systems and methods for two-dimensional (2D) velocity estimation of an object in an area of interest are disclosed. The area of interest can correspond to an indoor or an outdoor environment. Round trip times (RTTs) of signals from two or more signal sources to the object are determined. The object is relocated and delta RTT values of the signals subsequent to relocation of the object within the area of interest are determined. Angles of arrival (AOAs) of the signals at the object also determined. The 2D velocity of the object is estimated by on solving a system of non-linear equations based on the delta RTT values and the AOAs.