PURPOSE: An apparatus for constructing a home-zone database for home-zone service is provided to offer an apparatus for constructing a home-zone database in order to exactly embody home-zone service. CONSTITUTION: A cell plan processor(100) consists of a cell plan tool(110) and a conversion part(120). The cell plan tool(110) generates a coverage map to determine coverage by base stations. The conversion part(120) generates zone data using the coverage map. A home location register(400) stores subscriber information, such as terminal information, extrinsic information, etc. A location determination part(200) is composed of an address location database(210) and a zone database(220). The address location database(210) is transferred mobile identification numbers and national significant numbers from a CCC(Customer Care Center). The zone database(220) receives national significant numbers and RTD(Round Trip Delay) information from a base station transceiver subsystem. Also the zone database(220) stores home-zone data for each subscriber, based on latitude and longitude information provided from the address location database(210). An SPC(Service Provisioning Center)(300) transfers the home-zone data provided from the location determination part(200) to the home location register(400).
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