Method and apparatus for performing harq based on dynamic change of wireless resources in wireless communication system

A method for transmitting and receiving signals at a user equipment (UE) in a time division duplex (TDD) communication system, the method comprising:

• configuring a reference uplink/downlink configuration for a first serving cell from a plurality of uplink/downlink configurations by a higher layer,
• receiving downlink control information containing a specific uplink/downlink configuration for the first serving cell among the plurality of uplink/downlink configurations from a base station;
• and
• transmitting and receiving the signals based on the specific uplink/downlink configuration,
• wherein, if at least one subframe is indicated as an uplink subframe in the reference uplink/downlink configuration, the UE is not expected to receive the downlink control information containing the specific uplink/downlink configuration that indicates at least one subframe as a downlink subframe.

A user equipment (UE) apparatus in a time division duplex (TDD) communication system, the UE apparatus comprising:

• a wireless communication module configured to transmit and receive signals with a base station;
• and
• a processor configured to process the signals,
• wherein the processor configures a reference uplink/downlink configuration for a first serving cell from a plurality of uplink/downlink configurations by a higher layer, and
• wherein the processor controls the wireless communication module to receive downlink control information containing a specific uplink/downlink configuration for the first serving cell among the plurality of uplink/downlink configurations from a base station, and to transmit and receiving signals based on the specific uplink/downlink configuration,
• wherein, if at least one subframe is indicated as an uplink subframe in the reference uplink/downlink configuration, the UE is not expected to receive the downlink control information containing the specific uplink/downlink configuration that indicates at least one subframe as a downlink subframe.