An uplink radio resource allocation method allocates, at a radio base
station, an uplink radio resource used for uplink user data transmission
to a mobile station. The method includes: allocating, at the radio base
station, the uplink radio resource, so that total received power in an
particular cell of the radio base station is equal to a first target
value assigned by a radio network controller; and allocating, at the
radio station, the uplink radio resource, so that a ratio of first
received power from a serving mobile station to second received power
from a non-serving mobile station is equal to a second target value
assigned by the radio network controller, a serving cell of the serving
mobile station being the particular cell, a non-serving cell of the
non-serving mobile station being the particular cell.