Patent ID: 7408902

Claim:
A method of using a radio network controller (RNC) for controlling the data bit rate of a radio link (RL) to maintain the quality of the RL, the method comprising: establishing a guaranteed data bit rate, a maximum data bit rate and a current data bit rate associated with the RL; sensing an event indicating a quality deficiency of the RL; determining the identity of a specific coded composite transport channel (CCTrCH) associated with the RL; determining a target data bit rate needed to correct the RL quality deficiency; if the target data bit rate is less than the guaranteed data bit rate, renegotiating a new guaranteed data bit rate with a core network (CN); and if the target data bit rate is greater than or equal to the guaranteed data bit rate, reducing the current data bit rate to the target data bit rate by removing at least one transport format combination (TFC) from a transport format combination set (TFCS) associated with the specific CCTrCH.