| 摘要 |
PROBLEM TO BE SOLVED: To provide a position information notice method by which a position information confirming party can easily grasp whether a position retrieval object terminal has gone out of a specific area. SOLUTION: In the position information notice method, by which a position information confirmation device receives information relating to the position of a mobile terminal in a cellular wireless communication system, the mobile terminal receives base station identification information and its reception level from at least one base station, discriminates as to whether the mobile terminal deviated from a registration area registered in advance, on the basis of the base station identification information and its reception level, informs a center device about the received base station identification information and its reception level when discriminating its deviation, and the center device informs the position information confirmation device of this.
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