Radio frequency-based obstacle avoidance

US10446043B2 · kind B2 · utility

Assignees

• AT&T Mobility II LLC · US
• AT&T Intellectual Property I, L.P. · US

Inventors

• Erie Lai Har Lau · Redmond, US
• Sangar Dowlatkhah · Cedar Hill, US
• Brian Greaves · Atlanta, US
• Stephen Thomas Hardin · Suwanee, US
• Robert Osterwise · Cumming, US

Key dates

• Filing date: Jul 28, 2016
• Grant date: Oct 15, 2019
• Expiry date: Mar 1, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W4/42
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A method includes receiving, from an aerial vehicle, information related to a plurality of radio-frequency signals detected by the aerial vehicle, and identifying access points that transmitted at least one of the plurality of radio-frequency signals based on at least the information. The method also includes determining a first geographical location of the aerial vehicle based on at least the information and locations associated with the access points and identifying a second geographical location, the second geographical location associated with at least one of an obstacle or a restricted zone. The method also includes controlling a navigation of the aerial vehicle based on at least the first geographical location and the second geographical location.