Systems and Methods for Providing Geolocation Using Wireless Signals
First Claim
1. A method, for locating a receiver device, comprising:
- receiving, by the receiver device, from a transmitter, a radio signal;
capturing, by the receiver device, the radio signal to yield a received signal waveform;
generating, by the receiver device, based on the received signal waveform, a virtual transmitted signal waveform; and
determining, by the receiver device, based upon the received signal waveform and the virtual transmitted signal waveform, a position of the receiver device relative to the transmitter.
1 Assignment
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Accused Products
Abstract
A system and method for determining location of a wireless communications device using wireless signals. A radio signal is transmitted by each of multiple base stations and received by a wireless communications device. The wireless device captures the waveform of the received radio signal and stores the received radio signal with a time at which the signal was received. The signal is demodulated to a data stream and passed through a virtual transmitter module to recreate the transmitted signal. A time shift for the received signal is calculated, and a position of the wireless device relative to the base stations is determined based on the time shift. A location of the wireless device is determined based on a location of the base stations and the position of the device relative to the base stations.
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Citations
20 Claims
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1. A method, for locating a receiver device, comprising:
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receiving, by the receiver device, from a transmitter, a radio signal; capturing, by the receiver device, the radio signal to yield a received signal waveform; generating, by the receiver device, based on the received signal waveform, a virtual transmitted signal waveform; and determining, by the receiver device, based upon the received signal waveform and the virtual transmitted signal waveform, a position of the receiver device relative to the transmitter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system, comprising:
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a processor; and a computer-readable medium comprising computer-executable instructions that, when executed by the processor, cause the processor to perform operations comprising; receiving, from a transmitter, a radio signal; capturing the radio signal to yield a received signal waveform; generating, based on the received signal waveform, a virtual transmitted signal waveform; and determining, based upon the received signal waveform and the virtual transmitted signal waveform, a position of the receiver device relative to the transmitter. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A tangible computer-readable storage device comprising computer-executable instructions that, when executed by a processor, cause the processor to perform operations comprising:
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receiving, from a transmitter, a radio signal; capturing the radio signal to yield a received signal waveform; generating, based on the received signal waveform, a virtual transmitted signal waveform; and determining, based upon the received signal waveform and the virtual transmitted signal waveform, a position of the receiver device relative to the transmitter. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification