Third party device location estimation in wireless communication networks
First Claim
1. A method comprising:
- determining a distance between an observing communication device and a reference communication device of a wireless local area network (WLAN);
determining a distance between the observing communication device and a target communication device of the WLAN;
detecting, at the observing communication device, an exchange of messages between the target communication device and the reference communication device;
determining, at the observing communication device, timing information associated with the messages exchanged between the target communication device and the reference communication device; and
determining, at the observing communication device, a distance between the target communication device and the reference communication device based, at least in part, on the distance between the observing communication device and the reference communication device, the distance between the observing communication device and the target communication device, and the timing information associated with the messages exchanged between the target communication device and the reference communication device.
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Accused Products
Abstract
A third party device location estimation mechanism can be implemented in a wireless communication network. In one embodiment, a distance between an observing communication device and a reference communication device and a distance between the observing communication device and a target communication device are determined. An exchange of messages between the target communication device and the reference communication device is detected at the observing communication device. Timing information associated with the exchanged messages is determined at the observing communication device. A distance between the target communication device and the reference communication device is determined at the observing communication device based, at least in part, on the distance between the observing communication device and the reference communication device, the distance between the observing communication device and the target communication device, and the timing information associated with the messages exchanged between the target communication device and the reference communication device.
45 Citations
26 Claims
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1. A method comprising:
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determining a distance between an observing communication device and a reference communication device of a wireless local area network (WLAN); determining a distance between the observing communication device and a target communication device of the WLAN; detecting, at the observing communication device, an exchange of messages between the target communication device and the reference communication device; determining, at the observing communication device, timing information associated with the messages exchanged between the target communication device and the reference communication device; and determining, at the observing communication device, a distance between the target communication device and the reference communication device based, at least in part, on the distance between the observing communication device and the reference communication device, the distance between the observing communication device and the target communication device, and the timing information associated with the messages exchanged between the target communication device and the reference communication device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wireless communication device comprising:
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a processing unit; a network interface coupled to the processing unit; and a position calculation unit operable to; determine a distance between the wireless communication device and a reference communication device of a wireless local area network (WLAN); determine a distance between the wireless communication device and a target wireless communication device of the WLAN; detect an exchange of messages between the target wireless communication device and the reference communication device; determine timing information associated with the messages exchanged between the target wireless communication device and the reference communication device; and determine a distance between the target wireless communication device and the reference communication device based, at least in part, on the distance between the wireless communication device and the reference communication device, the distance between the wireless communication device and the target wireless communication device, and the timing information associated with the messages exchanged between the target wireless communication device and the reference communication device. - View Dependent Claims (11, 12, 13, 14, 15)
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16. One or more non-transitory machine-readable storage media, having instructions stored therein, which, when executed by one or more processors causes the one or more processors to perform operations that comprise:
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determining a distance between an observing communication device and a reference communication device of a wireless local area network (WLAN); determining a distance between the observing communication device and a target communication device of the WLAN; detecting, at the observing communication device, an exchange of messages between the target communication device and the reference communication device; determining, at the observing communication device, timing information associated with the messages exchanged between the target communication device and the reference communication device; and determining, at the observing communication device, a distance between the target communication device and the reference communication device based, at least in part, on the distance between the observing communication device and the reference communication device, the distance between the observing communication device and the target communication device, and the timing information associated with the messages exchanged between the target communication device and the reference communication device. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A method comprising:
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observing, at an observing communication device of a wireless local area network (WLAN), an exchange of messages between a target communication device of the WLAN and a reference communication device of the WLAN; and determining, at the observing communication device, a distance between the target communication device and the reference communication device based at least in part upon a determined distance between the observing communication device and the target communication device, a determined distance between the observing communication device and the reference communication device, and timing information associated with the observed messages exchanged between the target communication device and the reference communication device. - View Dependent Claims (23, 24, 25, 26)
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Specification