Patent ID: 7020127

Claim:
A method of transmission power control for a wireless transmit receive unit (WTRU) that transmits signals in a forward composite channel carrying data in a selected combination of channels where the WTRU is configured to make forward channel power adjustments as a function of target metrics computed based on the data signals as received over the forward channel and where the WTRU is configured for use in a code division multiple access (CDMA) system, the method comprising: determining a reference gain factor βref for a reference combination of channels; selecting a combination of channels for data transmission on the forward composite channel where the data channels are transport channels (TrCHs), the composite channel is an uplink coded composite transport channel (CCTrCH) and a transport format combination (TFC) is associated with each of a set of predefined format channel combinations of the CCTrCH where one of the format channel combinations is the reference combination of channel, TFCref; when the selected combination of channels is not the same as the reference combination of channels, computing a gain factor β for the selected combination of channels such that the gain factor β for the selected combination of channels is proportional to the reference gain factor βref wherein a jth combination of channels TFCj is selected for data transmission on the forward composite channel and a gain factor βj is computed for the selected combination of channels such that: β j =X×β ref ; and applying the gain factor β for the selected combination of channels in making forward channel power adjustments to the forward composite channel when transmitting data signals on the forward composite channel using the selected combination of channels.