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Mobile communication device and communication network for providing location services

  • US 6,070,083 A
  • Filed: 05/14/1998
  • Issued: 05/30/2000
  • Est. Priority Date: 05/14/1998
  • Status: Expired due to Term
First Claim
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1. A process in a mobile communication network comprising:

  • determining time difference of arrival (TDOA) measurements made by a mobile for at least three base station pairs of the network;

    determining correction factors corresponding to each of said base station pairs;

    applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements;

    determining the location of the mobile from said corrected TDOA measurements;

    receiving a specification of a type of service provider from the mobile;

    determining service providers of the type specified by the mobile that are local to the determined location of the mobile; and

    providing information regarding the service providers to the mobile.

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