Abstract: A mobile system wherein updating of a target SIR is carried out as an uplink outer loop power control by a radio network controller provided with a wait-timer which produces a time-out signal when the wait-timer times a preselected time duration after the wait-timer is set.

Abstract: In a mobile system wherein a user equipment communicates by radio communication with a node which is connected to a radio network controller and has a target SIR used in the mobile system in carrying out uplink inner loop power control, updating of the target SIR is carried out as uplink outer loop power control by the radio network controller provided with a wait-timer which produces a time-out signal when said wait-timer times a preselected time duration after the wait-timer is set. The radio network controller judges whether or not the radio network controller receives from the node a report representative of a radio condition around the node before the wait-timer produces the time-out signal. The radio network controller updates the target SIR into a new target SIR on the basis of the report when the radio network controller judges that the radio network controller receives from the node the report before the wait-timer produces the time-out signal.