Patent ID: 8290529

Claim:
An uplink radio resource allocation method for allocating, at a radio base station, an uplink radio resource used for uplink user data transmission to a mobile station, comprising: step (A) notifying, from the radio base station to a serving mobile station which connects to a particular cell of the radio base station as a serving cell, an increase/a reduction of the uplink radio resource allocated to the serving mobile station by using a first E-RGCH; and step (B) notifying, from the radio base station to a non-serving mobile station which connects to the particular cell of the radio base station as a non-serving cell, a reduction of the uplink radio resource allocated to the non-serving mobile station by using a second E-RGCH; wherein the radio base station restricts the transmission of the second E-RGCH when total received power in the particular cell of the radio base station is not larger than a first target value assigned by a radio network controller.