System and Method for Determining the Location of a Mobile Device
AssigneeAndrew Corporation
InventorsNeil Harper, Martin Dawson
Life of this patent
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Abstract
A system and method for determining the location of a mobile device. A first set of signals from a plurality of radio frequency (“RF”) sources may be received at a mobile device and then downconverted into a second set of signals. The mobile device may then time stamp the second set of signals and transmit the time stamped signals to a location determining system. The location of the mobile device may be determined at the location determining system as a function of the time stamped signals.
Claims20
A method for determining the location of a mobile device comprising the steps of:
- (a) receiving at a mobile device a first set of signals from a plurality of radio frequency (“RF”) sources;
- (b) downconverting at the mobile device the first set of signals into a second set of signals;
- (c) time stamping at the mobile device the second set of signals;
- (d) transmitting the time stamped signals from the mobile device to a location determining system;
- and
- (e) determining the location of the mobile device at the location determining system as a function of the time stamped signals,
- wherein the location determining system is a mobile location center (“MLC”) or a location information server (“LIS”).
A method for determining the location of a mobile device comprising the steps of:
- (a) transmitting at least one of a location request, a first frequency range, a first sampling duration, a first sampling rate, a first sampling resolution, and a time synchronization from a location determining system to a mobile device;
- (b) receiving at the mobile device a plurality of signals from a plurality of radio frequency (“RF”) sources;
- (c) downconverting at the mobile device the received plural signals into a plurality of intermediate frequency signals;
- (d) time stamping the plural intermediate frequency signals at the mobile device;
- (e) transmitting the time stamped signals from the mobile device to the location determining system;
- and
- (f) determining the location of the mobile device at the location determining system as a function of the time stamped signals,
- wherein the location determining system is a mobile location center (“MLC”) or a location information server (“LIS”).
(canceled)
A method for determining the location of a mobile device comprising the steps of:
- (a) transmitting a location request from a mobile device to a location determining system;
- (b) transmitting at least one of a first frequency range, a first sampling duration, a first sampling rate, a first sampling resolution, and a time synchronization from the location determining system to the mobile device in response to the location request;
- (c) receiving at a mobile device a plurality of signals from a plurality of radio frequency (“RF”) sources;
- (d) downconverting at the mobile device the received plural signals into a plurality of intermediate frequency signals;
- (e) time stamping at the mobile device the plural intermediate frequency signals;
- (f) transmitting the time stamped signals from the mobile device to the location determining system;
- and
- (g) determining the location of the mobile device at the location determining system as a function of the time stamped signals,
- wherein the location determining system is a mobile location center (“MLC”) or a location information server (“LIS”).
(canceled)
A system for determining the location of a mobile device from signals received from a plurality of radio frequency (“RF”) sources comprising:
- (a) a mobile device having:
- (i) a receiver for receiving signals from the plural RF sources,
- (ii) circuitry for downconverting the received signals,
- (iii) circuitry for time stamping the downconverted signals, and
- (iv) a transmitter for transmitting the time stamped signals;
- and
- (b) a location determining system having:
- (i) a receiver for receiving signals transmitted from the mobile device, and
- (ii) circuitry for determining the location of the mobile device as a function of the received signals from the device,
- wherein the location determining system is a mobile location center (“MLC”) or a location information server (“LIS”).
Dependencies are inferred from the claim text.