WIRELESS COMMUNICATION BASE STATION DEVICE, WIRELESS COMMUNICATION TERMINAL DEVICE AND SEARCH SPACE SETTING METHOD Russian patent published in 2013 - IPC H04W72/04 

FIELD: radio engineering, communication.

SUBSTANCE: disclosed is a wireless communication base station device in which CCE allocation can be performed flexibly without collision of ACK/NACK signals between a plurality of unit bands, even when wideband transmission is performed exclusively on a downlink circuit, which is the technical result. In this device, an allocation unit (105) sets up mutually different search spaces for each of a plurality of downlink unit bands with respect to wireless communication terminal devices that communicate using a plurality of downlink unit bands, and allocates resource allocation information of downlink circuit data destined for the wireless communication terminal devices to CCE in mutually different search spaces for each of the plurality of downlink unit bands, and an ACK/NACK reception unit (119) extracts a response signal with respect to the downlink circuit data from the uplink control channel associated with the CCE to which the resource allocation information of the downlink circuit data was allocated.

EFFECT: improved device.

24 cl, 9 dwg