Importance

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Abstract

The disclosure generally relates to a method and apparatus for hybrid location detection. The disclosed embodiments enable location determination for a mobile device in communication with one or more Access Points (APs) and an optical camera capable of measuring distance to a known object. In an exemplary embodiment, the camera is used to determine distance form a known object or a known location (i.e., anchor). In addition, using Wi-Fi infrastructure, round-trip signal propagation time may be used to determine one or more ranges from known access points (APs) connected. Round-trip signal propagation time may be measured, for example, by using a Time-Of-Flight algorithm. Additionally, trilateration algorithms may be used to determine a course location for the mobile device relative to the APs. Using a combination of optical distance measurement and the course location, the exact location of the mobile device may be determined.

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First Claim