Method for providing a safezone secession alarm service using mobile' previous position data

The invention guardian is the acquisition of the areas or points the subscriber specified in this state the information of the first base station who registered as subscribers and specify a protection target person, the protective subject mobile terminal is connected to the past from the home location register setting the observation area including and stores information of the base station existing in a first base station of the observation region on my base station DB assigned to the protected person. Thereafter, when the service subscriber requests a service, the service subscriber to identify the registered protection unique information of the subject mobile terminal, registered with the home location register or visitor location stored in the register, a mobile terminal of the protection subject here a second and identify the base station, if the information of the second base station to query whether stored on my base station DB stored on my base station DB and cumulative second base query number stored on my base DB, based on the cumulative number of my and delete or keep the information in the second base station stored in the base DB. On the other hand, the second base station information, a method my base station if it is not stored in the DB, safety judged by zones departure and it exits to the guardian to set to the known location information of the mobile terminal to inform the safety zone leaving fact the safe area according to the alarm service relate to. Safety zone, exit alarms, protect subjects, historical site, mobile