Mobile communication device and communication network for providing location services
First Claim
Patent Images
1. A process in a mobile communication network comprising:
- determining time difference of arrival (TDOA) measurements made by a mobile for at least three base station pairs of the network;
determining correction factors corresponding to each of said base station pairs;
applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements;
determining the location of the mobile from said corrected TDOA measurements;
receiving a specification of a type of service provider from the mobile;
determining service providers of the type specified by the mobile that are local to the determined location of the mobile; and
providing information regarding the service providers to the mobile.
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Accused Products
Abstract
A mobile communication system and communication device for providing location services. Time difference of arrival (TDOA) measurements are used to determine the location of a mobile of the network. The location may be forwarded to a service provider. The location may alternatively be used to determine service providers that are local to the mobile. Correction factors deprived from calibration TDOA measurements made at calibration terminals are applied to the TDOA measurements enhance the accuracy of the location determination.
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Citations
83 Claims
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1. A process in a mobile communication network comprising:
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determining time difference of arrival (TDOA) measurements made by a mobile for at least three base station pairs of the network; determining correction factors corresponding to each of said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining the location of the mobile from said corrected TDOA measurements; receiving a specification of a type of service provider from the mobile; determining service providers of the type specified by the mobile that are local to the determined location of the mobile; and providing information regarding the service providers to the mobile. - View Dependent Claims (2, 3, 4, 5)
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6. A mobile communication network, comprising:
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means for determining time difference of arrival (TDOA) measurements made by a mobile for at least three base station pairs of the network; means for determining correction factors corresponding to each of said base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining the location of the mobile from said corrected TDOA measurements; means for receiving a specification of a type of service provider from the mobile; means for determining service providers of the type specified by the mobile that are local to the determined location of the mobile; and means for providing information regarding the service providers to the mobile. - View Dependent Claims (7, 8, 9, 10)
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11. A process in a mobile of a mobile radio communication network, comprising:
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measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; determining correction factors associated with each of said base station pairs; applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location from said TDOA measurements; providing said location and a specification of a service provider type; and receiving information regarding service providers of the specified type that are local to the location of the mobile. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A mobile of a mobile radio communication network, comprising:
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means for measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; means for determining correction factors associated with each of said base station pairs; means for applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements;
determining a location from said TDOA measurements;means for providing said location and a specification of a service provider type; and means for receiving information regarding service providers of the specified type that are local to the location of the mobile. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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27. A process in a mobile of a mobile radio communication network, comprising:
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measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; determining correction factors associated with each of said base station pairs by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said TDOA measurements; and issuing a request to provide the location of the mobile to a specified service provider. - View Dependent Claims (28)
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29. A mobile of a mobile radio communication network, comprising:
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means for measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; means for determining correction factors associated with each of said base station pairs; means for applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; means for determining a location from said TDOA measurements; and means for issuing a request to provide the location of the mobile to a specified service provider. - View Dependent Claims (30)
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31. A process in an element of a mobile communication network, comprising:
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determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining correction factors corresponding to each of said base station pairs by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile. - View Dependent Claims (32, 33)
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34. An element of a mobile communication network, comprising:
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means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining correction factors corresponding to each of said base station pairs by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile. - View Dependent Claims (35, 36)
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37. A process in an element of a mobile communication network comprising:
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determining a time difference of arrival (TDOA) measurement for at least three base station pairs of the network; determining correction factors corresponding to each of said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining the location of the mobile from said corrected TDOA measurements; receiving a specification of a type of service provider from the mobile; determining service providers of the type specified by the mobile that are local to the determined location of the mobile; and providing information regarding the service providers to the mobile. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44)
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45. An element of a mobile communication network comprising:
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means for determining a time difference of arrival (TDOA) for at least three base station pairs of the network; means for determining correction factors corresponding to each of the base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining the location of the mobile from said corrected TDOA measurements; means for receiving a specification of a type of service provider from the mobile; means for determining service providers of the type specified by the mobile that arc local to the determined location of the mobile; and means for providing information regarding the service providers to the mobile. - View Dependent Claims (46, 47, 48, 49, 50, 51)
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52. A process in an element of a mobile communication network, comprising:
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determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a database associating calibration TDOA measurements with base station pairs; determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile. - View Dependent Claims (53, 54)
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55. A process in an element of a mobile communication network, comprising:
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determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining calibration TDOA measurements for each of said base stat on pairs made at known locations by querying a calibration terminal associating calibration TDOA measurements with base station pairs; determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile. - View Dependent Claims (56, 57)
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58. An element of a mobile communication network, comprising:
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means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a database associating calibration TDOA measurements with base station pairs; means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile. - View Dependent Claims (59, 60)
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61. An element of a mobile communication network, comprising:
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means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a calibration terminal associating calibration TDOA measurements with base station pairs; means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile. - View Dependent Claims (62, 63)
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64. A process in a mobile communication network, comprising:
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determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining correction factors corresponding to each of said base station pairs by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile. - View Dependent Claims (65)
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66. A mobile communication network, comprising:
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means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining correction factors corresponding to each of said base station pairs by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile. - View Dependent Claims (67)
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68. A process in a mobile communication network, comprising:
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determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a database associating calibration TDOA measurements with base station pairs; determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile. - View Dependent Claims (69)
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70. A process in a mobile communication network, comprising:
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determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a calibration terminal associating calibration TDOA measurements with base station pairs; determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile. - View Dependent Claims (71)
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72. A mobile communication network, comprising:
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means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a database associating calibration TDOA measurements with base station pairs; means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile. - View Dependent Claims (73)
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74. A mobile communication network, comprising:
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means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a calibration terminal associating calibration TDOA measurements with base station pairs; means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile. - View Dependent Claims (75)
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76. A process in a mobile of a mobile radio communication network, comprising:
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measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; determining calibration TDOA measurements for said base station pairs made at known locations by querying a location server maintaining a database associating calibration TDOA measurements with base station pairs; and determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location from said TDOA measurements; and providing a request to provide the location of the mobile to a specified service provider. - View Dependent Claims (77)
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78. A mobile of a mobile radio communication network, comprising:
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means for measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; means for determining calibration TDOA measurements for said base station pairs made at known locations by querying a location server maintaining a database associating calibration TDOA measurements with base station pairs; and means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location from said TDOA measurements; and means for providing a request to provide the location of the mobile to a specified service provider. - View Dependent Claims (79)
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80. A process in a mobile of a mobile radio communication network, comprising:
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measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; determining calibration TDOA measurements for said base station pair, made at known locations by querying a calibration terminal maintaining a database associating calibration TDOA measurements with base station pairs; and determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location from said TDOA measurements; and providing a request to provide the location of the mobile to a specified service provider. - View Dependent Claims (81)
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82. A mobile of a mobile radio communication network, comprising:
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means for measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; means for determining calibration TDOA measurements for said base station pairs made at known locations by querying a calibration terminal maintaining a database associating calibration TDOA measurements with base station pairs; and means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location from said TDOA measurements; and
means for providing a request to provide the location of the mobile to a specified service provider. - View Dependent Claims (83)
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Specification