| 摘要 |
The present invention relates to a wireless access system, and provides methods for transmitting and receiving data on the basis of a transport block size newly defined in order to support a 256 quadrature amplitude modulation (QAM) scheme, and devices supporting the same. As an embodiment of the present invention, a method for receiving, by a terminal, downlink data using a transport block size (TBS) for supporting 256 quadrature amplitude modulation (QAM) in a wireless access system may comprise the steps of: receiving a downlink control signal including a modulation and coding scheme index (IMCS)indicating 256QAM and a parameter indicating the number of resource blocks allocated to the terminal; deriving the transport block size for downlink data on the basis of the modulation and coding scheme index and the parameter; receiving the downlink data; and comparing a coding rate for the derived transport block size with a threshold value configured on the basis of the number of the resource blocks allocated to the terminal so as to determine whether to perform decoding for the received downlink data. The method may be configured to perform decoding for the received downlink data when the coding rate is equal to or less than the threshold value, and skip decoding for the received downlink data when the coding rate is greater than the threshold value. |
