Method and apparatus for automatic calibration of positioning system base stations
First Claim
1. A method for calibrating a location system, comprising:
- receiving at least one location assertion from at least one mobile communication device; and
updating a latency calibration record comprising a current base station latency estimate for a base station controller, wherein the updating comprises;
developing a new base station latency estimate by analyzing the at least one location assertion in relation to the latency calibration record; and
refining the latency calibration record using the new base station latency estimate.
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Abstract
The present invention is a method and apparatus for automatic calibration of wireless positioning system base stations. An automated system and method for calibrating a location system comprises obtaining at least one position assertion with a corresponding base station-centric position assertion on at least on mobile communication device. A latency calibration record is maintained which includes a current base station latency estimate for a base station controller. The measured position assertion is analyzed in relation to base station-centric position assertion and the latency calibration record, to develop a new base station latency estimate. The latency calibration record is refined using the new base station latency estimate and the steps are repeated to further refine the latency calibration record.
73 Citations
30 Claims
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1. A method for calibrating a location system, comprising:
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receiving at least one location assertion from at least one mobile communication device; and
updating a latency calibration record comprising a current base station latency estimate for a base station controller, wherein the updating comprises;
developing a new base station latency estimate by analyzing the at least one location assertion in relation to the latency calibration record; and
refining the latency calibration record using the new base station latency estimate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for calibrating a location system, comprising:
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receiving at least one location assertion from at least one mobile communication device;
developing a current position assertion database by collecting a plurality of received location assertions; and
updating a latency calibration record comprising a current base station latency estimate for a base station controller, wherein the updating comprises;
developing a new base station latency estimate by analyzing the current position assertion database in relation to the latency calibration record; and
refining the latency calibration record using the new base station latency estimate. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for updating a network of location systems, comprising:
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maintaining a base station almanac for each of a plurality of position determining entities, wherein the base station almanac is used to process location assertions;
developing a new base station almanac for each of the plurality of position determining entities;
synchronizing updates of the new base station almanac for each of the plurality of position determining entities; and
processing additional location assertions using the new base station almanac. - View Dependent Claims (16, 17)
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18. A method for calibrating a network of location systems, comprising:
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developing a current position assertion database by collecting a plurality of location assertions for each of a plurality of position determining entities;
maintaining a latency calibration record comprising a current base station latency estimate for each of the plurality of position determining entities;
developing a new base station latency estimate by analyzing the current position assertion database in relation to the latency calibration record for each of the plurality of position determining entities;
synchronizing updates of the latency calibration record for each of the plurality of position determining entities;
refining the latency calibration record using the new base station latency estimate for each of the plurality of position determining entities. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. A location calibration system, comprising:
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at least one mobile communication device;
at least one base transceiver system for receiving at least one location assertion from the at least one mobile communication device;
a base station controller for receiving the at least one location assertion from the at least one base transceiver system;
a position determining entity for collecting and storing in a current position assertion database a plurality of location assertions transmitted from the base station controller;
a latency calibration record stored in the position determining entity comprising a current base station latency estimate; and
a data management server for creating a new latency calibration record using the current base station latency estimate and the current position assertion database and distributing the new latency calibration record to the position determining entity. - View Dependent Claims (27, 28, 29, 30)
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Specification