Patent ID: 9585139
Date: 2017-02-28
CPC Classifications: H04J,H04L,H04W

Claim:
1. A transmitting apparatus comprising: a mapper which, in operation, maps downlink control information to a first search space or to a second search space, the first search space including one or a plurality of first physical downlink control channel (PDCCH) candidates for each of a plurality of aggregation levels, the second search space including one or a plurality of second PDCCH candidates for each of the plurality of aggregation levels and further including at least one other second PDCCH candidate for an aggregation level higher than any one of the plurality of aggregation levels, each of the first and the second PDCCH candidates being composed of a control channel element (CCE) or a plurality of aggregated CCEs of its corresponding aggregation level; and a transmitter which, in operation, transmits a signal including the downlink control information that is mapped to the first search space or the second search space.