Method and apparatus for mobile device location via a network based local area augmentation system
First Claim
Patent Images
1. A system comprising:
- a plurality of base stations, each base station comprising;
a positioning receiver to generate base station location information, each positioning receiver having a known location, anda link to a network to transmit said base station location information;
a station selection module to select a subset of the plurality of base stations based at least in part on each base station of the subset utilizing a set of satellites that is also utilized by a mobile device; and
a correction information calculation module coupled to the network to receive base station location information from each base station of the subset via the network, the correction information calculation module to calculate correction information as a function of the received base station location information and the known location for each base stations of the subset, wherein the correction information calculation module includes;
an integrity monitoring module to monitor the received base station location information and to prevent received base station location information that has been corrupted from being used by the correction information calculation module, anda measurements integration module to stochastically integrate non-corrupted base station location information to derive said correction information.
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Abstract
Methods and apparatuses for mobile device location via a network based local area augmentation system. In one embodiment a plurality of base stations each has a known location. Each base station includes a positioning receiver to generate base station location information and a link to a network to transmit the base station location information. A correction information calculation module is coupled to the network to receive base station location information from each of the base stations via the network. The correction information calculation module calculates correction information as a function of the base station location information and the known location for all of the base stations.
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Citations
26 Claims
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1. A system comprising:
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a plurality of base stations, each base station comprising; a positioning receiver to generate base station location information, each positioning receiver having a known location, and a link to a network to transmit said base station location information; a station selection module to select a subset of the plurality of base stations based at least in part on each base station of the subset utilizing a set of satellites that is also utilized by a mobile device; and a correction information calculation module coupled to the network to receive base station location information from each base station of the subset via the network, the correction information calculation module to calculate correction information as a function of the received base station location information and the known location for each base stations of the subset, wherein the correction information calculation module includes; an integrity monitoring module to monitor the received base station location information and to prevent received base station location information that has been corrupted from being used by the correction information calculation module, and a measurements integration module to stochastically integrate non-corrupted base station location information to derive said correction information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An system comprising:
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a plurality of cellular communications base stations, each base station comprising; a positioning receiver to generate base station location information, each positioning receiver having a known location; a link to a network to transmit said base station location information; a first module coupled to the network to receive base station location information from each of the plurality of base stations via the network, the first module to calculate correction information as a function of the received base station location information and the known location for all of the plurality of base stations; a second module to select location information from a selected subset of said plurality of base stations and to omit location information from an omitted subset of said plurality of base stations from computation of said correction information, wherein the second module selects the subset of base stations based at least in part on each of the subset of base stations utilizing a set of satellites that is also utilized by a receiver for which a set of correction information is being computed; a third module to communicate with a positioning system to determine preliminary position-related information; and a fourth module to calculate the receiver location from said correction information and said preliminary position-related information; wherein the first module includes; a fifth module to monitor the received base station location information and to prevent received base station location information that has been corrupted from being used by the first module, and a sixth module to stochastically integrate non-corrupted base station location information to derive said correction information. - View Dependent Claims (15, 16)
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17. An apparatus comprising:
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a network interface to receive base station location information from a plurality of base stations from a network; an integrity monitoring module to monitor the received base station location information and to discard received base station location information that has been corrupted; a correction information calculation module to compute a correction information for a mobile device as a function of non-discarded base station location information received from the base stations, wherein the correction information calculation module includes a measurements integration module to stochastically integrate non-discarded base station location information to derive said correction information; a station selection module to select a subset of the base stations based at least in part on each base station of the subset utilizing a set of satellites that is also utilized by the mobile device; and a localized data services module to provide localized information based on a location computed using said correction information. - View Dependent Claims (18, 19, 20, 21, 22)
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23. An article comprising a machine readable medium storing instructions that, if executed by a machine, cause the machine to perform a set of operations comprising:
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storing a plurality of location information communications from a plurality of base stations received via a network; monitoring the plurality of received location information communications and discarding any location information communications that have been corrupted; selecting a subset of the non-discarded plurality of location information communications, wherein the subset is selected based at least in part on which of the plurality of base stations is utilizing a set of satellites that is also being utilized by a mobile device for which a correction information is being computed; computing the correction information for the mobile device as a function of contents of the subset of said plurality of location information communications and known locations of said plurality of base stations; and stochastically integrating the subset of said plurality of location information communications to derive said correction information. - View Dependent Claims (24, 25, 26)
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Specification