Radio communication apparatus, radio base station, radio network controller, and transmission power control method

A transmission power control method for controlling target quality of a received signal used for inner loop transmission power control with outer loop transmission power control, comprising the steps of:

• detecting a change in durability for transmission error of received data, and
• executing an update of the target quality, when higher durability is detected, the update being slower than an update of the target quality when lower durability is detected.

A radio base station for comparing a reception quality of a pilot signal from a user equipment with a first reception quality and transmitting a transmission power control signal to the user equipment in accordance with a comparison result, the radio base station comprising:

• a transmitter operable to transmit a reception error measurement result information of the data transmitted from the user equipment and the information of the durability for transmission error, and
• a first reception quality administrator operable to update the first reception quality in accordance with the update control for the first reception quality by a radio network controller based on the information from the transmitter.

A radio network controller for receiving at least a measuring result of reception error from a radio base station, which compares a reception quality of pilot signals transmitted by a user equipment with a first reception quality, transmits transmission power controlling signals to the user equipment based on a result of the comparison and measures a reception error for data transmitted by the user equipment, the radio network controller comprising:

• an update controller operable to execute the update control of the first reception quality, when durability for transmission error is high, the update being slower than an update control of the first reception quality when the durability for transmission error is low,based on the measurement result of the reception error and the durability information for transmission error between the user equipment and the radio base station.

A radio communication apparatus for controlling target quality of a received signal used for inner loop transmission power control with outer loop transmission power control, the radio communication apparatus comprising:

• an update controller operable to consider an audio data transmission channel as an object for monitoring the outer loop transmission power control and to execute an update of the target quality slower in a non-signaling state than in a signaling state.