System and method for locating mobile device in wireless communication network
First Claim
1. A method of determining a location of a mobile device in a wireless network, the method comprising:
- receiving a plurality of global navigation satellite system (GNSS) measurements for the mobile device;
receiving a plurality of terrestrial measurements from a corresponding plurality of transceivers in the wireless network, each terrestrial measurement indicating a distance between the corresponding transceiver and the mobile device;
determining a first dilution of precision (DOP) measure corresponding to the received GNSS measurements;
determining combined DOP measures corresponding to each terrestrial measurement combined with the GNSS measurements;
selecting at least one terrestrial measurement resulting in a corresponding combined DOP measure that is improved over the first DOP measure; and
determining the location of the mobile device as a function of the GNSS measurements and the selected at least one terrestrial measurement.
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Accused Products
Abstract
A method is provided for determining a location of a mobile device in a wireless network. The method includes receiving global navigation satellite system (GNSS) measurements from the mobile device, and receiving terrestrial measurements from corresponding transceivers in the wireless network, each terrestrial measurement indicating a distance between the corresponding transceivers and the mobile device. The method further includes selecting at least one terrestrial measurement having an uncertainty value within a predetermined accuracy threshold. The location of the mobile device is determined as a function of the GNSS measurements and the selected terrestrial measurement.
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Citations
20 Claims
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1. A method of determining a location of a mobile device in a wireless network, the method comprising:
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receiving a plurality of global navigation satellite system (GNSS) measurements for the mobile device; receiving a plurality of terrestrial measurements from a corresponding plurality of transceivers in the wireless network, each terrestrial measurement indicating a distance between the corresponding transceiver and the mobile device; determining a first dilution of precision (DOP) measure corresponding to the received GNSS measurements; determining combined DOP measures corresponding to each terrestrial measurement combined with the GNSS measurements; selecting at least one terrestrial measurement resulting in a corresponding combined DOP measure that is improved over the first DOP measure; and determining the location of the mobile device as a function of the GNSS measurements and the selected at least one terrestrial measurement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of determining a location of a mobile device in a wireless network, the method comprising:
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receiving at least one global navigation satellite system (GNSS) measurement for the mobile device; receiving at least one terrestrial measurement from a corresponding at least one transceiver in the wireless network, the at least one terrestrial measurement indicating a distance between the corresponding transceiver and the mobile device; determining a GNSS dilution of precision (DOP) measure corresponding to the received at least one GNSS measurement; determining a combined DOP measure corresponding to the at least one terrestrial measurement combined with the at least one GNSS measurement; comparing the combined DOP measure with the GNSS DOP measure; and determining the location of the mobile device as a function of the at least one GNSS measurement and the at least one terrestrial measurement when the combined DOP measure is improved over the GNSS DOP measure. - View Dependent Claims (10, 11, 12, 13)
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14. A tangible computer readable medium storing a program, executable by a computer, for determining a location of a mobile device in a wireless network, the computer readable medium comprising:
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first receiving code for receiving at least one global navigation satellite system (GNSS) measurement for the mobile device; second receiving code for receiving at least one terrestrial measurement from a corresponding at least one transceiver in the wireless network, the at least one terrestrial measurement indicating a distance between the corresponding transceiver and the mobile device; GNSS dilution of precision (DOP) code for determining a GNSS DOP measure corresponding to the received at least one GNSS measurement; combined DOP code for determining a combined DOP measure corresponding to the at least one terrestrial measurement combined with the at least one GNSS measurement; comparing code for comparing the combined DOP measure with the GNSS DOP measure; and determining code for determining the location of the mobile device as a function of the at least one GNSS measurement and the at least one terrestrial measurement when the combined DOP measure is improved over the GNSS DOP measure. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A tangible computer readable medium storing a program, executable by a computer, for determining a location of a mobile device in a wireless network, the computer readable medium comprising:
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first receiving code for receiving a plurality of global navigation satellite system (GNSS) measurements for the mobile device; second receiving code for receiving a plurality of terrestrial measurements from a corresponding plurality of transceivers in the wireless network, each terrestrial measurement indicating a distance between the corresponding transceiver and the mobile device; dilution of precision (DOP) code for a determining a GNSS DOP measure corresponding to the received GNSS measurements, and for determining combined DOP measures corresponding to each terrestrial measurement combined with the GNSS measurements; selecting code for selecting at least one terrestrial measurement resulting in a corresponding combined DOP measure that is improved over the first DOP measure; and determining code for determining the location of the mobile device as a function of the GNSS measurements and the selected at least one terrestrial measurement.
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Specification