COMMUNICATION AREA DETECTION SYSTEM, METHOD THEREOF, AND BASE STATION AND MOBILE DEVICE USED FOR THE SAME

摘要

In the wake that transmitted power from a base station to user equipment becomes a constant value or more, a control station acquires positional information of the user equipment (position 12), whereby a downstream service stable area-unstable area border 10 is grasped. Further, when transmitted power of the user equipment becomes a constant value or more, positional information of the user equipment (position 11) is acquired, whereby an upstream service stable area-unstable area border 20 is grasped. Thus, in a mobile communication system, determination of each of the downstream and upstream stable-unstable areas can be carried out with accuracy, easily and in real time at detection of a service area in the base station.