A mobile station (200, 500) comprising: a first processing unit configured to wirelessly transmit and receive a signal to and from a base station (100, 600); and a second processing unit configured to cause the first processing unit to receive a radio resource control, RRC, message that includes configuration information indicating a radio resource position in a frequency axis within a shared channel, cause the first processing unit to receive a first signal in a first layer and to receive data in a second layer different from the first layer, and cause the first processing unit to transmit, in response to determining whether the data is normally received in the second layer, acknowledgement information through a first radio resource corresponding to the radio resource position indicated by the configuration information, the first radio resource being selected based on the configuration information included in the received RRC message, the acknowledgement information being a transmission control protocol acknowledgement, TCP ACK, or a TCP negative acknowledgement, NACK, the shared channel being a physical uplink shared channel, PUSCH. a first processing unit configured to wirelessly transmit and receive a signal to and from a base station (100, 600); and a second processing unit configured to cause the first processing unit to receive a radio resource control, RRC, message that includes configuration information indicating a radio resource position in a frequency axis within a shared channel, cause the first processing unit to receive a first signal in a first layer and to receive data in a second layer different from the first layer, and cause the first processing unit to transmit, in response to determining whether the data is normally received in the second layer, acknowledgement information through a first radio resource corresponding to the radio resource position indicated by the configuration information, the first radio resource being selected based on the configuration information included in the received RRC message, the acknowledgement information being a transmission control protocol acknowledgement, TCP ACK, or a TCP negative acknowledgement, NACK, the shared channel being a physical uplink shared channel, PUSCH. cause the first processing unit to receive a radio resource control, RRC, message that includes configuration information indicating a radio resource position in a frequency axis within a shared channel, cause the first processing unit to receive a first signal in a first layer and to receive data in a second layer different from the first layer, and cause the first processing unit to transmit, in response to determining whether the data is normally received in the second layer, acknowledgement information through a first radio resource corresponding to the radio resource position indicated by the configuration information, the first radio resource being selected based on the configuration information included in the received RRC message, the acknowledgement information being a transmission control protocol acknowledgement, TCP ACK, or a TCP negative acknowledgement, NACK, the shared channel being a physical uplink shared channel, PUSCH.