Patent ID: 8089919

Claim:
A method for transmitting an acknowledgement/negative acknowledgement (ACK/NACK) signal at a node-B in response to a packet received on an uplink, the method comprising: receiving a packet from a user equipment (UE); decoding the packet; determining whether the packet has been successfully received based on the decoding of the packet; transmitting an ACK signal to the UE if it is determined that the packet has been successfully received; transmitting a NACK signal to the UE if it is determined that the packet has not been successfully received; receiving information regarding transmission power levels for the ACK signal and the NACK signal from a radio network controller (RNC), wherein the information regarding the transmission power levels comprises information indicating whether a transmission power of the NACK signal must have a level of 0; transmitting the information regarding the transmission power levels to the UE; and determining the transmission power levels for the ACK signal and the NACK signal based on the information regarding the transmission power levels.