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System and method for mobile device self-location

  • US 8,369,871 B1
  • Filed: 04/04/2012
  • Issued: 02/05/2013
  • Est. Priority Date: 08/18/2009
  • Status: Active Grant
First Claim
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1. A system for mobile client-side location determination, comprising:

  • a mobile device comprising base transceiver station location data, a memory, a processor, and a location engine stored in the memory that, when executed by the processor;

    receives information that identifies a plurality of base transceiver stations in response to the mobile device registering with a communication network,estimates a location of an out-of-network base transceiver station based on executing a location fix technology;

    provides the location of the out-of-network base transceiver station for the base transceiver station information;

    receives an update for base transceiver station location data stored on the mobile device in response to a determination that the mobile device is approaching a geographical limit associated with the base transceiver station information, wherein the update one of adds additional base transceiver station location data to the base transceiver station location data or replaces a portion of the base transceiver station location data, and wherein the portion of the base transceiver station location data that is replaced is based on a direction opposite to a direction associated with the geographical limit associated with the base transceiver station location data;

    reads a location for each of the plurality of base transceiver stations from the base transceiver station location data,calculates a location of the mobile device based on the location of each of the plurality of base transceiver stations, andprovides the location of the mobile device in a defined portion of a communication transmitted by the mobile device.

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