Patent ID: 8284687

Claim:
An apparatus for rate control in a wireless communication system, the apparatus comprising: a preprocessor configured to determine feedback information on a physical layer packet using a feedback message of a Media Access Control (MAC) Automatic Repeat reQuest (ARQ); a rate controller configured to update a Channel Quality Indicator (CQI) reported from a receiver using the determined feedback information; a determiner configured to determine a Modulation and Coding Scheme (MCS) using the updated Channel Quality Indicator; and a transmitter configured to transmit data using the determined Modulation and Coding Scheme, wherein the preprocessor is further configured to determine the feedback information on the physical layer packet based on a comparison of a size of at least one MAC Protocol Data Unit corresponding to a Negative ACKnowledgement with a size of at least one MAC Protocol Data Unit corresponding to an ACKnowledgement.