Method and apparatus for locating a mobile device

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United States of America Patent

PATENT NO 10247807
APP PUB NO 20170350958A1
SERIAL NO

15686582

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method for locating a mobile device is disclosed. Initially, a set of modulated ultrasound signals and a set of radio signals are separately broadcast from a group of transmitters. The ultrasound signals include at least one symbol configured for pulse compression. After the receipt of a demodulated ultrasound signal from a mobile device, wherein the demodulated ultrasound signal is derived from the modulated ultrasound signals, transmitter identifier and timing information are extracted from the demodulated ultrasound signal. Timing information include, for example, the arrival time of the demodulated ultrasound signal in relation to the start time of its transmission. After the locations of the transmitters have been ascertained from the transmitter identifier information, the location of the mobile device can be determined based on the timing information and the locations of the transmitters.

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Patent Owner(s)

  • CARNEGIE MELLON UNIVERSITY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lazik, Patrick Pittsburg, US 3 38
Rajagopal, Niranjini Pittsburg, US 2 9
Rowe, Anthony Pittsburg, US 11 73
Shih, Oliver Pittsburg, US 8 41
Sinopoli, Bruno Pittsburg, US 4 32

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