A resource mapping scheme (e.g., a CCE-to-REG mapping scheme) for a 5G DL control channel may include a non-interleaving scheme and an interleaving scheme. The non-interleaving mapping scheme may be a mapping scheme in which multiple contiguous REGs constitute one CCE, and the interleaving mapping scheme may be a mapping scheme in which multiple non-contiguous REGs constitute one CCE. Preferred mapping schemes may be different depending on methods for transmitting a DL control channel. As an example, a transmit diversity transmission scheme may be used for a PDCCH in order to improve reception performance, and the interleaving mapping scheme may be applied to maximize frequency diversity. Alternatively, when UE-specific beamforming is used for PDCCH transmission, the non-interleaving mapping scheme may be used to maximize a beamforming gain in a particular subband in which a PDCCH is transmitted.
Hereinafter, a method for configuring a bandwidth part (BWP) considered in a 5G communication system will be described.