Patent ID: 8831631

Claim:
A method of discriminating between a terminal located in a space including a small base station and a terminal located in a space excluding the small base station, the method comprising: calculating a path loss between a small base station and a terminal; calculating, using the path loss, a distance r est,in H of the small base station based indoors indicating a distance between the small base station and the terminal when the terminal is presumed to be placed within an area including the small base station; calculating, using the path loss, a distance r est,out H of the small base station based outdoors indicating a distance between the small base station and the terminal when the terminal is presumed to be placed within an area excluding the small base station; and performing a first determining operation to determine whether the terminal is placed within the area excluding the small base station by comparing a distance r est,in H of the small base station based indoors and the distance r est,out H of the small base station based outdoors with a radius R H available for the small base station to provide a service using a current amount of power.