Insensitive area detecting method and apparatus for the same in radio communication system

Method of detecting an insensitive area in a radio communication system which includes a plurality of base stations (10,11) and a plurality of mobile terminals (12), a total reception power data is requested to a concerned one of the plurality of base stations (10,11) which is connected with a concerned one of the plurality of mobile terminals, when a signal indicating an insensitive state of the concerned mobile terminal (12) is received. Radio environment of an up link is determined from the concerned mobile terminal (12) to the concerned base station (10,11) based an the total reception power data from the concerned base station. An up link insensitive area is determined based on a position data of the mobile terminal (12) and the radio environment.