Mobile terminal apparatus and method of transmitting an uplink control information signal

摘要

To suppress and minimize changes from the method of transmitting an uplink control information in the LTE system, while supporting increases in the system band and increases in the transmission layer when there is a PUSCH signal transmitted in the same subframe, provided is a configuration for generating a UCI signal for a base station apparatus (20) in a mobile communication system having a system band comprised of a plurality of component carriers, multiplexing the UCI signal into a PUSCH signal transmitted in the same subframe as the UCI signal in a user specific component carrier used in transmission of a PUCCH signal, and transmitting the PUSCH signal into which the UCI signal is multiplexed to the base station apparatus (20).

主权项

1. A mobile terminal apparatus that performs radio communication with a base station apparatus via one or more component carriers in a mobile communication system having a system band comprised of a plurality of component carriers, the mobile terminal apparatus comprising:
an uplink control information signal generating section configured to generate an uplink control information signal to report to the base station apparatus; a multiplexing section configured to, when a plurality of component carriers are allocated to uplink and there is an uplink shared data channel signal to be transmitted in a same subframe as the uplink control information signal in a particular component carrier out of the component carriers, multiplex the uplink control information signal with the uplink shared data channel signal; and a transmission section configured to transmit the uplink shared data channel signal with which the uplink control information signal is multiplexed to the base station apparatus, wherein, when the uplink shared data channel signal to be transmitted in the same subframe as the uplink control information signal is not in the particular component carrier but in an other component carrier except the particular component carrier, the multiplexing section multiplexes the uplink control information signal with the uplink shared data channel signal in the other component carrier.