SYSTEM AND METHOD FOR CONCURRENTLY DETERMINING LOCATIONS OF MOBILE DEVICE IN WIRELESS COMMUNICATION NETWORK
First Claim
1. A method for a mobile location center (MLC) to determine a location of a mobile device in a wireless communication network, the method comprising:
- receiving a request initiated by the mobile device to determine the location of the mobile device;
concurrently requesting global navigation satellite system (GNSS) measurements from the mobile device and terrestrial measurements from transceivers in the wireless communication network;
receiving the GNSS measurements and at least one of the terrestrial measurements;
calculating a GNSS location of the mobile device as a function of the received GNSS measurements, and determining that the location of the mobile device comprises the calculated GNSS location when the calculated GNSS location meets a predetermined accuracy threshold;
calculating a terrestrial location of the mobile device as a function of the received terrestrial measurements, and determining that the location of the mobile device comprises the calculated terrestrial location when the calculated terrestrial location meets the predetermined accuracy threshold; and
calculating a hybrid location of the mobile device as a function of the received GNSS measurements and the received terrestrial measurements when neither the calculated GNSS location nor the calculated terrestrial location meets the predetermined accuracy threshold, and determining that the location of the mobile device comprises the calculated hybrid location when the calculated hybrid location meets the predetermined accuracy threshold.
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Accused Products
Abstract
A method for a mobile location center (MLC) to determine a location of a mobile device in a wireless communication network includes receiving a request to determine the location of the mobile device; concurrently requesting global navigation satellite system (GNSS) measurements from the mobile device and terrestrial measurements from transceivers in the wireless communication network, and receiving the GNSS measurements and at least one of the terrestrial measurements. A GNSS location of the mobile device is calculated as a function of the GNSS measurements, and the calculated GNSS location is determined to be the location of the mobile device when the calculated GNSS location meets a predetermined accuracy threshold. A terrestrial location of the mobile device is calculated as a function of the terrestrial measurements, and the calculated terrestrial location is determined to be the location of the mobile device when the calculated terrestrial location meets the predetermined accuracy threshold.
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Citations
20 Claims
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1. A method for a mobile location center (MLC) to determine a location of a mobile device in a wireless communication network, the method comprising:
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receiving a request initiated by the mobile device to determine the location of the mobile device; concurrently requesting global navigation satellite system (GNSS) measurements from the mobile device and terrestrial measurements from transceivers in the wireless communication network; receiving the GNSS measurements and at least one of the terrestrial measurements; calculating a GNSS location of the mobile device as a function of the received GNSS measurements, and determining that the location of the mobile device comprises the calculated GNSS location when the calculated GNSS location meets a predetermined accuracy threshold; calculating a terrestrial location of the mobile device as a function of the received terrestrial measurements, and determining that the location of the mobile device comprises the calculated terrestrial location when the calculated terrestrial location meets the predetermined accuracy threshold; and calculating a hybrid location of the mobile device as a function of the received GNSS measurements and the received terrestrial measurements when neither the calculated GNSS location nor the calculated terrestrial location meets the predetermined accuracy threshold, and determining that the location of the mobile device comprises the calculated hybrid location when the calculated hybrid location meets the predetermined accuracy threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for determining a location of a mobile device in a wireless communication network, the system comprising:
a mobile location center (MLC) configured to determine a first location of the mobile device and a corresponding first accuracy as a function of first measurements, to determine a second location of the mobile device and a corresponding second accuracy as a function of second measurements, and to identify one of the first location and the second location as the geographic location of the mobile device when any one of the first or second accuracies exceeds a predetermined threshold. - View Dependent Claims (14, 15, 16)
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17. A method for a mobile location center (MLC) to determine a geographic location of a mobile device in a wireless communication network, the method comprising:
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concurrently requesting global navigation system (GNSS) measurements from the mobile device and terrestrial measurements from a plurality of nodes in the wireless communication network; calculating a first location of the mobile device as a function of the GNSS measurements and a second location of the mobile device as a function of the terrestrial measurements; calculating a third location of the mobile device as a function of both the GNSS measurements and the terrestrial measurements; and selecting one of the first, second or third locations having a highest accuracy as the geographic location of the mobile device. - View Dependent Claims (18, 19, 20)
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Specification