Base Station Apparatus, Mobile Station Apparatus, Method for Mapping a Response Signal, and Method for Determining a Response Signal Resource

摘要

Provided is a radio communication base station device which can obtain a maximum frequency diversity effect of a downstream line control channel. The device includes: an RB allocation unit (101) which allocates upstream line resource blocks continuous on the frequency axis for respective radio communication mobile stations by the frequency scheduling and generates allocation information indicating which upstream line resource block has been allocated to which radio communication mobile station device; and an arrangement unit (109) which arranges a response signal to the radio communication mobile station device in the downstream line control channels distributed/arranged on the frequency axis while being correlated to the continuous upstream line resource blocks according to the allocation information.

主权项

1. A base station apparatus comprising:
an allocating unit configured to allocate, to a mobile station, one or a plurality of uplink resource block(s); a mapping unit configured:
to map ACK or NACK signals respectively associated with at least two uplink resource blocks that are consecutive in the frequency domain to different groups of downlink frequency bands;to map ACK or NACK signals respectively associated with uplink resources blocks that are non-consecutive in the frequency domain to a same group of the downlink frequency bands; and a transmitting unit configured to transmit the mapped ACK or NACK signals to the mobile station.