BASE STATION, TRANSMISSION METHOD, MOBILE STATION AND RETRANSMISSION CONTROL METHOD

摘要

The present invention aims at reducing or avoiding PUCCH conflict among terminals if a PDSCH and a PDCCH for indicating assignment information required to receive the PDSCH are transmitted in different subframes. One aspect of the present invention relates to a base station for transmitting a physical downlink shared channel and a physical downlink control channel in different subframes, wherein the physical downlink control channel indicates assignment information required to receive the physical downlink shared channel, comprising: a resource assignment information storage unit configured to store resource assignment information for a physical uplink control channel or resource assignment information for a physical downlink control channel; a resource assignment unit configured to assign a resource for the physical downlink control channel with reference to the resource assignment information storage unit such that no conflict arises among physical uplink control channels from multiple mobile stations; and a transmission unit configured to transmit the physical downlink control channel and the physical downlink shared channel.