FIELD: information technology.
SUBSTANCE: device includes: an resource block allocation section (101) which allocates uplink resource blocks continuous on the frequency axis for corresponding radio communication mobile stations by frequency scheduling and generates allocation information indicating which uplink resource block has been allocated to which radio communication mobile station device; and a mapping section (109) which maps a response signal to the radio communication mobile station device in downlink control channels distributed/mapped on the frequency axis, associated with the continuous uplink resource blocks according to the allocation information.
EFFECT: maximising the frequency diversity effect on downlink control channels.
23 cl, 22 dwg
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