Patent ID: 9647813
Date: 2017-05-09
CPC Classifications: H04L,H04W

Claim:
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.