Patent ID: 6909880

Claim:
An updating method for use in a mobile system comprising a radio network controller, a node having a service area and connected to said radio network controller through a signal transmission line, and a user equipment which communicates with said node by radio communication within the service area of said node, uplink inner loop power control and uplink outer loop power control being carried out as transmission power control in said mobile system, said node having a target SIR (Signal to Interference Ratio) which is used in said mobile system in carrying out said uplink inner loop power control, said updating method being carried out as said uplink outer loop power control for updating said target SIR into a new target SIR and comprising the steps of: making said radio network controller be provided with a wait-timer which produces a time-out signal when said wait-timer times a preselected time duration after said wait-timer is set; judging in said radio network controller whether or not said radio network controller receives from said node a report representative of a radio condition around said node before said wait-timer produces said time-out signal; updating said target SIR into said new target SIR in said radio network controller on the basis of said report when said radio network controller judges that said radio network controller receives from said node said report before said wait-timer produces said time-out signal; again setting said wait-timer in said radio network controller when said target SIR is updated into said new target SIR in said radio network controller; decreasing said target SIR by a predetermined value into a decreased target SIR in said radio network controller when said radio network controller judges that said radio network controller does not yet receive from said node said report when said wait-timer produces said time-out signal; and again setting said wait-timer in said radio network controller when said target SIR is decreased into said decreased target SIR in said radio network controller.