USER APPARATUS AND UPLINK TRANSMISSION TIMING CONTROL METHOD

摘要

A user apparatus includes a signal transmission unit configured to transmit an uplink signal, a signal reception unit configured to receive a downlink signal; and a timing adjustment unit configured to perform timing control for shifting forward transmission timing of the uplink signal on the basis of reception timing of the downlink signal. When there is a secondary cell to which a physical uplink control channel is set in a cell group including secondary cells using a same uplink transmission timing in cells used for the carrier aggregation, the timing adjustment unit performs the timing control on the cell group by using an offset value according to a frame structure of the secondary cell.

主权项

1. A user apparatus including a function configured to perform communication with another communication apparatus by carrier aggregation using a carrier having a particular frame structure and a carrier having a frame structure different from the particular frame structure, comprising:
a signal transmission unit configured to transmit an uplink signal to the communication apparatus; a signal reception unit configured to receive a downlink signal from the communication apparatus; and a timing adjustment unit configured to perform timing control for shifting forward transmission timing of the uplink signal to the communication apparatus transmitted from the signal transmission unit on the basis of reception timing of the downlink signal from the communication apparatus received by the signal reception unit, wherein, when there is a secondary cell to which a physical uplink control channel is set in a cell group including secondary cells using a same uplink transmission timing in cells used for the carrier aggregation, the timing adjustment unit performs the timing control on the cell group by using an offset value according to a frame structure of the secondary cell.