Data receiving method and apparatus supporting expansion modulation scheme

A method for receiving data in a wireless communication system, the method comprising:

• configuring, by a wireless device, expansion subframe information indicating at least one expansion subframe in which expansion modulation scheme is supported among a plurality of subframes;
• configuring, by the wireless device, downlink control information that includes a modulation and coding scheme (MCS) field indicating the expansion modulation scheme on a downlink control channel, in the at least one expansion subframe;
• and
• receiving, by the wireless device, downlink data on a downlink shared channel according to the downlink control information,
• wherein MCS tables for the MCS field are different in the expansion subframe and a non-expansion subframe.

A wireless device in a wireless communication system, the wireless device comprising:

• a radio frequency (RF) unit configured to transmit and receive a radio signal;
• and
• a processor connected to the RF unit,
• wherein the processor is configured to:
• configure expansion subframe information indicating at least one expansion subframe in which expansion modulation scheme is supported among a plurality of subframes through the RF unit;
• configure downlink control information that includes a modulation and coding scheme (MCS) field indicating the expansion modulation scheme on a downlink control channel, in the at least one expansion subframe through the RF unit;
• and
• receive downlink data on a downlink shared channel according to the downlink control information through the RF unit,
• wherein MCS tables for the MCS field are different in the expansion subframe and a non-expansion subframe.