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US 2014/0194137 A1Published application
Method and/or system for obtaining signatures for use in navigation
AssigneeQUALCOMM Incorporated
InventorsJu-Yong DO, Saumitra Mohan DAS, Faraz Mohammad MIRZAEI
Life of this patent
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Abstract
Disclosed are systems, methods and techniques for obtaining round trip time (RTT) measurements from acquisition of signals at one or more mobile devices, the signals being transmitted by one or more transmitters; approximating locations of the one or more mobile devices while obtaining the RTT measurements; and combining the measurements to determine expected RTT signature values at discrete positions in the area based, at least in part, on the obtained RTT measurements and the approximated locations.
Claims33
A method comprising:
- obtaining round trip time (RTT) measurements from acquisition of signals at one or more mobile devices, said signals being transmitted by one or more transmitters;
- approximating locations of said one or more mobile devices while obtaining said RTT measurements;
- and
- combining said RTT measurements to determine expected RTT signature values at discrete positions in an area based, at least in part, on the obtained RTT measurements and the approximated locations.
1 more element
An apparatus comprising:
- a communication interface;
- and
- one or more processors to:
- access round trip time (RTT) measurement values received at said communication interface, said RTT measurement values obtained from acquisition of signals at one or more mobile devices, said signals being transmitted by one or more transmitters;
- approximate locations of said one or more mobile devices while obtaining said RTT measurement values;
- and
- combine said RTT measurement values to determine expected RTT signature values at discrete positions in an area based, at least in part, on the obtained RTT measurement values and the approximated locations.
4 more elements
An article comprising:
- a storage medium comprising machine-readable instructions stored thereon which are executable by a special purpose computing apparatus to:
- obtain round trip time (RTT) measurements from acquisition of signals at one or more mobile devices, said signals being transmitted by one or more transmitters;
- approximate locations of said one or more mobile devices while obtaining said RTT measurements;
- and
- combine said RTT measurements to determine expected RTT signature values at discrete positions in an area based, at least in part, on the obtained RTT measurements and the approximated locations.
2 more elements
An apparatus comprising:
- means for obtaining round trip time (RTT) measurements from acquisition of signals at one or more mobile devices, said signals being transmitted by one or more transmitters;
- means for approximating locations of said one or more mobile devices while obtaining said RTT measurements;
- and
- means for combining said RTT measurements to determine expected RTT signature values at discrete positions in an area based, at least in part, on the obtained RTT measurements and the approximated locations.
1 more element
A method comprising, at a mobile device:
- approximating a location of said mobile device;
- obtaining one or more round trip time (RTT) measurements from acquisition of one or more signals at said mobile device, said one or more signals being transmitted by one or more transmitters;
- and
- transmitting one or more messages comprising said approximated location and said one or more RTT measurements to a server for use in computing expected RTT signature values at discrete positions in an area.
1 more element
A mobile device comprising:
- a transceiver to transmit and receive signals over a wireless communication link;
- and
- one or more processors to:
- obtain one or more round trip time (RTT) measurements from acquisition of one or more signals at said transceiver, said signals being transmitted by one or more transmitters;
- and
- initiate transmission of one or more messages through said transceiver comprising an approximate location of said mobile device and said one or more RTT measurements to a server for use in computing expected RTT signature values at discrete positions in an area.
3 more elements
A mobile device comprising:
- means for approximating a location of said mobile device;
- means for obtaining one or more round trip time (RTT) measurements from acquisition of one or more signals at said mobile device, said one or more signals being transmitted by one or more transmitters;
- and
- means for transmitting one or more messages comprising said approximated location and said one or more RTT measurements to a server for use in computing expected RTT signature values at discrete positions in an area.
1 more element
An article comprising:
- a storage medium comprising machine-readable instructions stored thereon which are executable by a special purpose computing apparatus in a mobile device to:
- approximate a location of said mobile device;
- obtain one or more round trip time (RTT) measurements from acquisition of one or more signals at said mobile device, said one or more signals being transmitted by one or more transmitters;
- and
- transmit one or more messages comprising said approximated location and said one or more RTT measurements to a server for use in computing expected RTT signature values at discrete positions in an area.
2 more elements
Dependencies are inferred from the claim text.