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|1. (WO2015115311) USER DEVICE AND METHOD|
|Applicants:||NTT DOCOMO, INC.
|Title:||USER DEVICE AND METHOD|
Disclosed is a technology for determining, in Carrier Aggregation wherein both FDD cells and TDD cells are used, downlink control information which is used in each cell. An embodiment of the present invention relates to a user device, comprising: a transceiver unit which transmits and receives wireless channels to and from base stations according to Frequency Division Duplex (FDD) and Time Division Duplex (TDD) via a plurality of cells which are set by Carrier Aggregation; a cell management unit which manages the plurality of cells; and a communication control unit which assesses whether the duplex communication method applied to a primary cell among the plurality of cells is FDD or TDD and receives and demodulates downlink control information following the determined duplex communication method with regard to each of the cells whereupon the Carrier Aggregation is executed.