Terminal, base station, wireless communication method, and integrated circuit

摘要

A terminal includes a determination unit that determines a PUCCH resource based on at least a first value in a case where downlink control information is detected with a PDCCH and a second value is not set, determines a PUCCH resource based on at least the second value in a case where the downlink control information is detected with the PDCCH and the second value is set, and determines the PUCCH resource based on at least the third value for the ePDCCH set with which the downlink control information is detected regardless of whether or not the second value is set in a case where the downlink control information is detected with the ePDCCH in the ePDCCH set. With this feature, a HARQ-ACK to a transport block transmitted on the PDSCH can be efficiently transmitted and received using a PUCCH.

主权项

1. A terminal apparatus comprising:
a detection processor configured and/or programmed to:
monitor a physical downlink control channel (PDCCH) with downlink control information, the downlink control information being used for scheduling of a physical downlink shared channel (PDSCH); andmonitor an enhanced physical downlink control channel (ePDCCH) with the downlink control information; a reception processor configured and/or programmed to:
receive the PDSCH scheduled by the downlink control information;receive a system information block which includes information indicating a first value, the first value being common among terminal apparatuses in a cell;receive information indicating a second value of a terminal apparatus specific PUCCH resource offset and information indicating a value of a virtual cell identity for a PUCCH in a same higher layer signal; andreceive information indicating a third value of a PUCCH resource offset for an ePDCCH set; and a transmission processor configured and/or programmed to transmit a HARQ-ACK for the PDSCH on a PUCCH resource, wherein for the PDSCH transmission indicated by the detection of the PDCCH with the downlink control information, the PUCCH resource is based on at least the first value in a case where the second value is not configured, for the PDSCH transmission indicated by the detection of the PDCCH with the downlink control information, the PUCCH resource is based on at least the second value in a case where the second value is configured, and for the PDSCH transmission indicated by the detection of the ePDCCH with the downlink control information, the PUCCH resource is based on at least the third value for the ePDCCH set where the ePDCCH with the downlink control information is detected, regardless of whether or not the second value is configured.