Apparatus and method for controlling hybrid automatic repeat request (HARQ) in a mobile communication system

摘要

A Hybrid Automatic Repeat reQuest (HARQ) control apparatus and method for detecting a message received over a packet data control channel in a mobile communication system are provided in which a base station transmits a packet data control message over at least one packet data control channel and transmits packet data to a mobile station over a packet data channel. A control channel decoder decodes a control message received over the packet data control channel. Based on the decoded control message, the HARQ controller determines at least one of whether to perform demodulation and decoding on a packet received over the packet data channel, whether to update a Walsh mask, and whether to perform state transition on the mobile station. The HARQ controller based on the determination performs at least one of the following functions: outputs demodulation and decoding parameters, updates a Walsh mask, and outputs a state transition value to an upper layer. A data channel demodulator demodulates packet data received over the packet data channel upon receiving a demodulation parameter from the HARQ controller. A decoder decodes the packet data demodulated by the data channel demodulator upon receiving a decoding parameter from the HARQ controller.