Transmitting/receiving apparatus and method for packet retransmission in a mobile communication system

摘要

Disclosed is a transmitting/receiving apparatus for packet retransmission in a mobile communication system. Upon a retransmission request by a receiver, a transmitter rearranges coded bits and maps the rearranged bits to modulation symbols. The modulation symbols of a retransmission are transmitted with different reliabilities from those of an initial transmission. A receiver demodulates received data and rearranges the coded bits in an original order before decoding if the coded bits have been retransmitted.