COMMUNICATION APPARATUS AND COMMUNICATION METHOD

摘要

Disclosed is a transmission apparatus capable of properly performing cross carrier scheduling in ePDCCHs. In this apparatus, when communication is performed using a plurality of component carriers (CCs), configuration section 102 configures a first search space as a candidate to which control information for a first CC is assigned and a second search space as a candidate to which control information for a second CC other than the first CC among the plurality of CCs is assigned, within a same allocation unit group among a plurality of allocation unit groups included in a data-assignable region within the first CC, and transmission section 106 transmits control information mapped to the first search space and control information mapped to the second search space.

主权项

1. A communication apparatus comprising:
a receiver which, in operation, receives a signal including a first downlink control information of a first component carrier and a second downlink control information of a second component carrier; control circuitry which, in operation, determines a first search space and a second search space which are configured within one physical resource block set (PRB set) among a plurality of PRB sets included in a data region of the first component carrier, wherein the second search space is configured using a Carrier Indicator Field value (CIF value) that is set for the second component carrier, the first search space includes one or more mapping candidates of the first downlink control information, and the second search space includes one or more mapping candidates of the second downlink control information; and a detector which, in operation, detects the first downlink control information by decoding the first search space and detects the second downlink control information by decoding the second search space.