Patent ID: 7813379

Claim:
A wireless packet data transmitter for transmitting to a wireless packet data receiver data packet on a transport channel and control information for supporting the transport channel on a control channel in a wireless packet data communications system, comprising: a padding bit eliminator for eliminating optional padding bits of a variable size from a transport block for data packet transmission; a transport channel encoder for transport channel-encoding the transport block without the padding bits and transmitting the encoded transport block on the transport channel; and a control channel encoder for control channel-encoding the control information including a padding bit number indicator indicating the number of the eliminated padding bits and transmitting the encoded control information on the control channel, wherein if the transport block is an initial transmission block carrying a new data packet, the control channel encoder transmits the padding bit number indicator in a redundancy and constellation version (RV) field, and if the transport block is a retransmission block carrying a retransmission data packet, the control channel encoder selects one of predetermined RV coding values and transmits the selected RV coding value in the RV field.