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Method for rapid determination of an assigned region associated with a location on the earth

  • US 5,737,731 A
  • Filed: 08/05/1996
  • Issued: 04/07/1998
  • Est. Priority Date: 08/05/1996
  • Status: Expired due to Term
First Claim
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1. A method for generating a database having a plurality of hierarchical records for correlating a present location of a subscriber unit on the Earth with a location area controlled by a communication service provider, said location area denoting a functionally uniform operable region for said communication service provider, said method comprising the steps of:

  • (a) partitioning the Earth into a plurality of equally spaced areas;

    (b) for each of said plurality of equally spaced areas, overlaying service area boundary data denoting service areas controlled by said communication service provider within said each of said plurality of equally spaced areas;

    (c) when one of said plurality of equally spaced areas contains any of said service area boundary data, further partitioning said one of said plurality of equally spaced areas into additional ones of said plurality of equally spaced areas;

    (d) when said plurality of equally spaced areas do not contain said service area boundary data, recording said location area assigned to said one of said plurality of equally spaced areas; and

    (e) repeating steps (c) and (d) for each of said plurality of equally spaced areas.

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