Patent ID: 8675626
Filing Date: 2014-03-18
Classification: H04L,H04W

Abstract:
1. A user equipment (UE), to which an uplink component carrier and a plurality of downlink component carriers are configured, the UE comprising: a determination section configured to determine a basic payload size of control information, which is transmitted from a base station in a downlink control channel; and a downlink control channel reception section configured to detect the control information, which is mapped onto a search space in each downlink component carrier, using the determined basic payload size, wherein: the plurality of downlink component carriers include a primary downlink component carrier; the basic payload size of the control information mapped onto a search space in the primary downlink component carrier is a payload size, which is given based on a number of information bits obtained from a bandwidth of the primary downlink component carrier, and on a number of information bits obtained from a bandwidth of the uplink component carrier, the bandwidth of the uplink component carrier being broadcasted in the primary downlink component carrier; and the basic payload size of the control information mapped onto a search space in a downlink component carrier other than the primary downlink component carrier is a payload size, which is given based on a number of information bits obtained from a bandwidth of the downlink component carrier other than the primary downlink component carrier.