Sensing RF environment to determine geographic location of cellular base station
First Claim
1. A method of determining a geographic location of a mobile station, the method comprising:
- querying, by the mobile station, a serving mobile location center (SMLC) to determine a reference macro-base transceiver station (macro-BTS) and a neighbor macro-BTS of the reference macro-BTS;
receiving a plurality of beacons at the mobile station including a first beacon transmitted by the reference macro-BTS and a second beacon transmitted by the neighbor macro-BTS;
determining, by the mobile station, a set of measurement data that includes, for each of the plurality of beacons received at the mobile station, a corresponding measurement data; and
performing, by the mobile station, location based calculations using the set of measurement data to determine the geographic location of the mobile station.
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Accused Products
Abstract
Determining a geographic location of a cellular base station is disclosed. In some embodiments, a set of measurement data that includes for each of a plurality of signals received at the base station a corresponding measurement data is determined. The set of measurement data is used to determine the geographic location of the base station. In some embodiments, a set of measurement data is received. The received measurement data includes for each of a plurality of location measurement units at which a signal transmitted by the base station is received a corresponding measurement data associated with the signal. The set of measurement data is used to determine the geographic location of the base station.
61 Citations
28 Claims
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1. A method of determining a geographic location of a mobile station, the method comprising:
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querying, by the mobile station, a serving mobile location center (SMLC) to determine a reference macro-base transceiver station (macro-BTS) and a neighbor macro-BTS of the reference macro-BTS; receiving a plurality of beacons at the mobile station including a first beacon transmitted by the reference macro-BTS and a second beacon transmitted by the neighbor macro-BTS; determining, by the mobile station, a set of measurement data that includes, for each of the plurality of beacons received at the mobile station, a corresponding measurement data; and performing, by the mobile station, location based calculations using the set of measurement data to determine the geographic location of the mobile station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 22, 23, 28)
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11. A method of determining a geographic location of a mobile station, the method comprising:
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querying, by the mobile station, a serving mobile location center (SMLC) to determine a reference macro-base transceiver station (macro-BTS) and a neighbor macro-BTS of the reference macro-BTS; receiving a plurality of beacons at the mobile station including a first beacon transmitted by the reference macro-BTS and a second beacon transmitted by the neighbor macro-BTS; determining, by the mobile station, a time of arrival, and corresponding assistance data, for each of the plurality of beacons received at the mobile station; and performing, by the mobile station, location based calculations using the time of arrival, and corresponding assistance data, for each of the plurality of beacons received at the mobile station to determine the geographic location of the mobile station. - View Dependent Claims (12, 13, 24, 25)
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14. A system for determining a geographic location of a mobile station, the system comprising:
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a radio frequency receiver; and a processor configured to; query a serving mobile location center (SMLC) to determine a reference macro-base transceiver station (macro-BTS) and a neighbor macro-BTS of the reference macro-BTS; receive a plurality of beacons including a first beacon transmitted by the reference macro-BTS and a second beacon transmitted by the neighbor macro-BTS; determine a time of arrival, and corresponding assistance data, for each of the plurality of received beacons; and use the time of arrival, and corresponding assistance data, for each of the plurality of received beacons to determine the geographic location of the mobile station. - View Dependent Claims (15, 16)
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17. A system for determining a geographic location of a mobile station, the system comprising:
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a communication interface; and a processor configured to; query a serving mobile location center (SMLC) to determine a reference macro-base transceiver station (macro-BTS) and a neighbor macro-BTS of the reference macro-BTS; receive a plurality of beacons including a first beacon transmitted by the reference macro-BTS and a second beacon transmitted by the neighbor macro-BTS; receive via the communication interface a set of measurement data that includes, for each of the plurality of received beacons, a corresponding measurement data; and use the set of measurement data by performing location based calculations to determine the geographic location of the mobile station.
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18. A method of determining a geographic location of a mobile station, the method comprising:
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determining, by a serving mobile location center (SMLC), a reference location measurement unit (LMU) and a neighbor LMU of the reference LMU; receiving, at the SMLC, a first time of arrival (TOA) measurement from the reference LMU and a second TOA measurement from the neighbor LMU, wherein the first TOA measurement corresponds to a plurality of beacons received at the reference LMU, from the mobile station, and the second TOA measurement corresponds to a plurality of beacons received at the neighbor LMU, from the mobile station; determining, by the SMLC, a first time difference of arrival (TDOA) measurement corresponding to a difference between the first TOA measurement and the second TOA measurement; and performing location based calculations at the SMLC using the first TDOA measurement to determine the geographic location of the mobile station. - View Dependent Claims (19, 20, 21, 26, 27)
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Specification