| 摘要 |
A wireless communication base station device, terminal device, and method have reduced signaling while maintaining high scheduling gain. A judgment unit pre-stores a correspondence between the number of code words and the number of clusters to reduce the maximum value for the number of clusters allocated to each terminal as the number of code words increases, and thus determines the maximum value for the number of clusters based on the number of code words acquired. Based on the number of code words for a transmission signal from a terminal, an estimated value for the reception quality, and the maximum value for the number of clusters that is output by the judgment unit, a scheduling unit schedules the allocation of the transmission signal transmitted by each terminal to a transmission band frequency (frequency resource) so as not to exceed the maximum value for the number of clusters. |
| 主权项 |
1. A communication apparatus comprising:
an allocating section configured to allocate one cluster or a plurality of clusters to a terminal, the plurality of clusters being inconsecutive in a frequency domain, and each cluster being comprised of resource blocks that are consecutive in the frequency domain; and a transmitting section configured to transmit, to the terminal, downlink control information including resource block assignment information that indicates the resource blocks of which the allocated one cluster or the allocated plurality of clusters are comprised, wherein the downlink control information is transmitted with a downlink control information (DCI) format that is used for scheduling in uplink, the DCI format having a size, which is different according to the number of codewords, the number of layers, or the number of streams and which is same, regardless of a number of clusters allocated to the terminal, for each number of codewords, each number of layers, or each number of streams, and wherein the DCI format has a same size according to a maximum value of the number of clusters for each number of codewords, each number of layers, or each number of streams, wherein a number of bits used to transmit the resource block assignment information indicating the resource blocks of which the plurality of clusters are comprised is larger than a number of bits used to transmit the assignment information indicating the resource blocks of which the one cluster is comprised. |
