Mobile communication system and method for registering location of a mobile terminal in the mobile communication system

DETAILED DESCRIPTION It is an object of the present invention to solve the aforementioned problems.
It is another object of the present invention to provide a mobile communication system enabling to properly and immediately control location registration of a mobile terminal in an exchange office.
It is still another object of the present invention to provide a method for registering location of a mobile terminal wherein an exchange office can immediately confirm location of a mobile terminal and properly conduct location control of the mobile terminal.
The object of the present invention is achieved by a mobile communication system having a plurality of base stations, each of the base stations makes a radio zone, and a mobile terminal that moves in the radio zones and registers location of the mobile terminal to a predetermined base station, wherein the mobile terminal comprises location registration means for detecting reception levels of signals from the base stations, calculating a difference between a largest reception level and a second largest reception level and registering location of the mobile terminal to a base station having transmitted a signal of the largest reception level when the difference is larger than a preset threshold value.
The object of the present invention is further achieved by a method for registering location of a mobile terminal in a mobile communication system having a plurality of base stations, each of the base stations makes a radio zone, and a mobile terminal that moves in a plurality of radio zones, in the mobile terminal, comprising steps of: detecting a plurality of reception levels of a plurality of signals from the base stations; selecting a largest reception level and a second largest reception level from among detected reception levels; calculating a difference between the largest reception level and the second largest reception level; and registering location of the mobile terminal to a base station having transmitted a signal of the largest reception level when the difference is lager than a preset threshold value