Mobile station apparatus, communication method, integrated circuit, radio communication system, and control program

摘要

In a radio communication system including a plurality of mobile station apparatuses and a base station apparatus, a physical uplink reference signal and a physical uplink control channel signal are efficiently controlled and the mobile station apparatus appropriately transmits a signal. The mobile station apparatus includes: a radio resource control unit 403 that sets a radio resource of a reference signal for measuring channel quality and a radio resource of a physical uplink control channel; a simultaneous transmission control unit 4051 which, when transmitting the physical uplink control channel signal in a time frame in which the radio resource of the reference signal has been set, controls a signal transmission processing depending on whether each radio resource has been set to the same component frequency band or each radio resource has been set to a different component frequency band; and a transmission processing unit 407 that transmits the reference signal and/or the physical uplink control channel signal based on the control of the simultaneous transmission control unit.

主权项

1. A mobile station apparatus comprising:
a transmission processor configured to transmit at least a signal by using one or more component frequency bands each having a predetermined frequency bandwidth, wherein the transmission processor is configured to in a case that transmission of an SRS (Sounding Reference Signal) for a first component frequency band and transmission of a PUCCH (Physical Uplink Control Channel) for a second component frequency band are set in the same subframe, determine based on a format of the PUCCH whether to
transmit only the PUCCH of a first format, without transmitting the SRS, orsimultaneously transmit the SRS and the PUCCH of a second format, the first format is a format which is based on an orthogonal sequence with a sequence length of 4 for a second slot of the subframe and the second format is a format which is based on an orthogonal sequence with a sequence length of 3 for the second slot of the subframe, in a case that the subframe is an SRS subframe of the second component frequency band to which transmission of the PUCCH is set, the transmission processor is configured to transmit only the PUCCH of the first format without transmitting the SRS, and simultaneously transmit the PUCCH of the second format and the SRS, and in a case that the subframe is not the SRS subframe, the transmission processor is configured to transmit only the PUCCH of the first format without transmitting the SRS.