BASE STATION DEVICE, MOBILE STATION DEVICE, COMMUNICATION METHOD, AND INTEGRATED CIRCUIT

摘要

The present invention enables a base station device to efficiently notify a mobile station device of control information in a wireless communication system in which the base station device and the mobile station device communicate. An EPDCCH is configured from one or more ECCEs, and the ECCEs are configured from a plurality of EREGs. When the EPDCCH is transmitted using a distributed mapping, in each of the EREGs, each resource element is alternately associated with one antenna port from among two antenna ports, and on the basis of the association, the base station device and the mobile station device communicate.