Patent ID: 8150444

Claim:
A mobile communication method for notifying a mobile station of transmission power control information by a radio base station via a transmission power control channel, the transmission power control information used in the mobile station to control transmission power of uplink user data, the method comprising: (A) assigning, at a radio network controller, a channelization code and a transmission timing for the mobile station on the basis of a status of use of a channelization code and a transmission timing in a sector other than a specific sector when the mobile station sets a radio link with the radio base station in the specific sector; (B) notifying, from the radio base station, the mobile station of the transmission power control information via the transmission power control channel using the channelization code and the transmission timing assigned at the radio network controller; (C) randomly selecting a first transmission timing usable in a smallest channelization code having a smallest identification number among channelization codes usable in the specific sector, and (D) assigning the first transmission timing and the smallest channelization code as the transmission timing and the channelization code for the mobile station in a case where the first transmission timing is usable in all of the channelization codes in all of the sectors under the control of the radio network controller.