Mobile communication system and channel transmission/reception method thereof

摘要

A method for transmitting a physical channel in a Time Division Duplex (TDD) communication system capable of carrier aggregation is provided for supporting aggregation of carriers having different TDD configurations. The communication method of a terminal in a TDD radio communication system accomplishing broadband through carrier aggregation of primary and secondary cells, of which aggregated carriers have different TDD Uplink-Downlink (UL-DL) configurations, includes receiving Physical Downlink Shared Channel (PDSCH) through the secondary cell, and transmitting acknowledgement information corresponding to the PDSCH to a base station, where acknowledgement information is transmitted on a Physical Uplink Control CHannel (PUCCH) of the primary cell.

主权项

1. A communication method of a terminal supporting carrier aggregation, the method comprising:
receiving downlink data on a primary cell and a secondary cell from a base station; determining a maximum value between a first value and a second value; setting one or more of hybrid automatic repeat request acknowledgement (HARQ-ACK) for the primary cell to a discontinuous transmission (DTX) value based on the maximum value and the first value, if the first value is less than the maximum value; and setting one or more of HARQ ACK for the secondary cell to the DTX value based on the maximum value and the second value, if the second value is less than the maximum value, wherein the first value and the second value are integers greater than or equal to 0, and wherein the first value is a number of downlink sub-frame associated with a sub-frame of the primary cell, and the second value is a number of downlink sub-frame associated with the sub-frame of the secondary cell.