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Method and apparatus for selecting a location platform for a user equipment to roam and method for determining a location of a user equipment using the same

  • US 8,463,298 B2
  • Filed: 06/25/2012
  • Issued: 06/11/2013
  • Est. Priority Date: 05/17/2004
  • Status: Active Grant
First Claim
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1. A method for calculating a location of a User Equipment (UE) that is roaming, the method comprising:

  • receiving, by a Home Location Platform (HLP), a location request message from the UE for starting a positioning session with the UE, wherein the location request message includes specific identifier information of an area in which the UE is located, and positioning capability information including a positioning scheme supported by the UE;

    determining that the HLP calculated a position estimate;

    transmitting a request for an approximate coordinate information to a Visiting Location Platform (VLP);

    receiving the approximate coordinate information from the VLP;

    exchanging location information with the UE; and

    calculating a position of the UE using the exchanged location information.

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