Patent ID: 8291278

Claim:
A receiving apparatus for combining Hybrid Automatic Repeat Request (HARQ) data in a communication system, the apparatus comprising: a Log Likelihood Ratio (LLR) demapper configured to convert HARQ data received from a transmitting end into LLR information; a HARQ combiner configured to at least one of: (i) allow the LLR information of the received HARQ data to be stored, and (ii) combine corresponding LLR information stored in a HARQ data memory with the LLR information of the received HARQ data; a HARQ LLR information bit size controller configured to determine whether LLR information needs to be compressed according to a predicted maximum data size if the received HARQ data is not retransmitted data, and to store the LLR information converted according to the determination of whether compression is necessary; and the HARQ data memory configured to store the converted LLR information according to the determination of whether compression is necessary.