The present disclosure provides a method executed by a base station, the method comprising: generating configuration information indicating whether one transport block is mapped to only one resource unit or mapped to more than one resource unit when user equipment (UE) uses sub-physical resource block allocation to allocate resources for a physical uplink shared channel (PUSCH); and transmitting the configuration information to the UE. The present disclosure further provides a corresponding base station, UE, and a corresponding method executed by UE.