1. In a communication system in which User Equipments (UEs) receive Downlink Control Information (DCI) formats transmitted through respective Physical Downlink Control Channels (PDCCHs) from a base station over a transmission time interval, a method for a UE to transmit signals in a Physical Uplink Shared Channel (PUSCH) over a communication system operating bandwidth in response to reception of a DCI format, the method comprising the steps of: determining first frequency resources for transmission of the signals in the PUSCH from second frequency resources indicated by the DCI format; determining values of all other parameters for the transmission of the signals in the PUSCH by other means exclusive of the DCI format; and transmitting the signals in the PUSCH using the first frequency resources.