Wireless Network Assisted GPS System
First Claim
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1. An apparatus comprising:
- a location application processor having access to GPS satellite data and configured to receive a set of GPS parameters from a mobile unit and to process the GPS parameters in view of the GPS satellite data to calculate a position of the mobile unit.
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Abstract
A method and apparatus for locating a mobile communications device such as a cell phone includes apparatus for communicating with base stations and apparatus for communicating with satellites. Signals received from satellites and the base stations are combined to provide the necessary information to calculate the location of the mobile communications device.
22 Citations
29 Claims
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1. An apparatus comprising:
a location application processor having access to GPS satellite data and configured to receive a set of GPS parameters from a mobile unit and to process the GPS parameters in view of the GPS satellite data to calculate a position of the mobile unit. - View Dependent Claims (2, 3, 18, 19)
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4-17. -17. (canceled)
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20. A method comprising:
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collecting at least three items of information, said items of information to be selected from among the group consisting of;
one or more differences in path lengths of plural signals sent from different base stations of a wireless network to the mobile unit;
one or more differences in lengths of signals sent to/from satellites from/to a GPS receiver collocated with the mobile unit; and
one or more differences in path lengths of one or more signals sent from the mobile unit to plural base stations of the wireless network; and
combining said at least three types of information to obtain a location of said mobile unit. - View Dependent Claims (21, 22, 23, 24)
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25. A system comprising:
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a base station to be disposed in a wireless communication network; and
a location application processor, to be coupled to said base station, the location application processor having access to GPS satellite data and configured to receive a set of GPS parameters from a mobile unit and to process the GPS parameters in view of the GPS satellite data to calculate a position of the mobile unit. - View Dependent Claims (26, 27, 28, 29)
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Specification