COMMUNICATION TERMINAL DEVICE, BASE STATION DEVICE, AND TRANSMISSION POWER CONTROL METHOD

摘要

In a radio communication system containing A-DPCH (Associated - Dedicated Physical Channel) to which soft handover is applied and HS-DPCCH (High Speed - Dedicated Physical Control Channel) to which hard handover is applied, it is possible to perform an appropriate transmission power control for the HS-DPC CH and maintain reception SIR of the HS-DPCCH at a predetermined SIR. An HO judgment section (30) judges whether the A-DPCH is in the soft handover stat e. When the A-DPCH is not in the soft handover state, a transmission radio section (42) sets the HS-DPCCH transmission power to power equal to the A-DP CH transmission power. When the A-DPCH is in the soft handover state, the transmission radio section (42) sets the HS-DPCCH transmission power to the A- DPCH transmission power added by an offset.