Patent ID: 7197021

Claim:
A Node B apparatus for transmitting an uplink power offset and a downlink data channel power level in a high-speed packet data communication system, comprising: an uplink power offset determiner for measuring a signal-to-interference ratio (SIR) of a first uplink dedicated channel signal received from a UE (User Equipment), comparing a difference between the measured SIR and a preset target SIR with preset thresholds, and determining an uplink power offset to be applied to a second uplink dedicated channel transmitting control information for packet data received at the UE according to a result of the comparison; a downlink data channel power level determiner for determining a modulation technique to be applied to a downlink data channel for transmitting the packet data according to a channel condition with the UE, and determining a downlink data channel power level which is channel gain-related control information of the downlink data channel, when the determined modulation technique is a high-order modulation technique; and a transmitter for transmitting over a downlink the uplink power offset or the downlink data channel power level to the UE.