| 摘要 |
PROBLEM TO BE SOLVED: To report position information on a portable terminal to other portable terminals etc., when, since the portable terminal can not receive position information by conventional position information service, the portable terminal is decided to be in such a case that the portable terminal is unable to transmit and receive a radio wave for some reason such that the portable terminal is in a place that a radio wave does not reach. SOLUTION: A radio controller reports a failure to a service controller, once receiving failure report that another device etc., transmits as communication which should be performed within a prescribed period and is associated with, for example, periodic position registration is not performed from a mobile communication terminal. The service controller, once receiving the report, obtains position information on the mobile communication terminal from an HLR or the radio controller and sends it to an external device etc., with a short message etc. COPYRIGHT: (C)2011,JPO&INPIT
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