Method and apparatus for setting gain factors for dedicated physical channels in a mobile telecommunications system

An apparatus for setting gain factors for dedicated physical channels in a mobile communication system, comprising:

• a receiver for receiving channel configuration information for establishing dedicated physical channels;
• a transmission controller for determining whether a dedicated physical data channel (DPDCH), to which a legacy dedicated channel (DCH) is mapped, is configured, setting a gain factor representing a transmit power of a dedicated physical control channel (DPCCH) related to the DPDCH according to the TFC of the DCH set by a radio network controller (RNC) if the DPDCH is configured, setting the gain factor representing the transmit power of the DPCCH to a predetermined constant if the DPDCH is not configured, and calculating a gain factor representing the transmit power of at least one dedicated physical channel indicated by the channel configuration information using the gain factor of the DPCCH;
• and
• a transmitter for sending information on the at least one dedicated physical channel with a transmit power corresponding to the calculated gain factor.

A method of setting gain factors for dedicated physical channels in a mobile communication system, comprising the steps of:

• determining, in a user equipment (UE), whether a first dedicated physical channel is configured in order to configure uplink dedicated physical channels, the first dedicated physical channel being at least one criterion for setting a transmit power;
• if the first dedicated physical channel is configured, determining variables for the first dedicated physical channel and setting gain factors corresponding to the variables in the UE;
• if the first physical dedicated channel is not configured, determining variables indicating that the first dedicated physical channel is not sent and setting a gain factor for the first dedicated physical channel to a predetermined constant in the UE;
• setting, in the UE, variables for at least one second dedicated physical channel other than the first dedicated physical channel;
• and
• sending, by the UE, channel configuration information including the variables for the first and second dedicated physical channels to at least one of a user equipment and a Node B related to the first and second dedicated physical channels.