Method and system for determining a position fix indoors

US8831507B2 · kind B2 · utility

Assignee

• Broadcom Corporation · US

Inventors

• Dave Murray · Mission Viejo, US
• Charles Abraham · Los Gatos, US
• Mark Buer · Gilbert, US
• David Garrett · Sydney, AU
• Jeyhan Karaoguz · Irvine, US
• David Lundgren · Mill Valley, US

Key dates

• Filing date: Mar 26, 2010
• Grant date: Sep 9, 2014
• Expiry date: Jan 7, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S2205/02
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Whenever a mobile device in a building is within proximity of a RF communication device, the mobile device may be operable to receive location information transmitted, for example by broadcasting it, from a RF communication device. The transmitted location information comprises altitude information of the RF communication device. At least an altitude of the mobile device may be determined based on the received altitude information of the RF communication device. The RF communication device may be located in an elevator car and/or on a particular floor in the building. Whenever the RF communication device is located in the elevator car, the altitude information of the RF communication device may be received by the RF communication device from an elevator controller. In instances when the RF communication device also transmits its latitude/longitude (LAT/LON), the mobile device may be operable to determine a 3-dimentional (3D) location of the mobile device.