Integrated circuit for control channel allocation

摘要

A wireless communication base station apparatus that allows the number of times of blind decodings at a mobile station to be reduced without increasing the overhead caused by notifying information. In this apparatus, a CCE allocation part allocates allocation information allocated to a PDCCH received from modulation parts to a particular one of a plurality of search spaces that is corresponding to a CCE aggregation size of the PDCCH. A placement part then places the allocation information in one of downstream line resources, reserved for the PDCCH, that is corresponding to the CCE of the particular search space to which the allocation information has been allocated. A radio transmission part then transmits an OFDM symbol, in which the allocation information has been placed, to the mobile station from an antenna.

主权项

1. An integrated circuit comprising:
at least one input, which, in operation, inputs a control channel that is received on one or a plurality of control channel elements (CCE(s)) with consecutive CCE number(s) from a base station apparatus; and circuitry coupled to the at least one input, wherein the circuitry, in operation, controls decoding of the received control channel in a search space, which is defined by control channel candidates to be decoded; wherein the search space is comprised of specific ones of the CCEs, at least a portion of the search space being comprised of CCEs with consecutive CCE numbers, and the specific ones of the CCEs starting on a specific CCE number in ascending order according to the number of the CCE(s), on which the control channel is received, and wherein an uplink resource used for transmission of a response signal is associated with a CCE number of the CCE(s), on which the control channel is received.