| 摘要 |
PURPOSE: A method and apparatus for defining transmitting/receiving timing and resource allocation of a physical channel in a TDD(time division duplex) communication system which supports carrier aggregation are provided to prevent transmission and/or reception errors of data or a control channel or transmission delay by defining detailed timing between physical channels for transmitting data or control information. CONSTITUTION: A downlink physical channel is transmitted to a terminal(905) for at least one of a first cell or a second cell. An uplink physical channel for the downlink physical channel of the first cell is received in a predetermined time point for the first cell(907). The uplink physical channel for the downlink physical channel of the second cell is received according to the uplink physical channel receiving time point of the first cell(917). The uplink physical channel receiving time point of the second cell is equal to the uplink physical channel receiving time point of the first cell. [Reference numerals] (901) Subframe n : a start point for transmitting a PDSG; (903) Subframe n : a start point for transmitting a PDSG; (905) Transmitting a PDCCH/PDSCH in a subframe n of a Pcell; (907) Receiving(rule 1,2) an HARQ ACK/NACK in an UL subframe of the Pcell according to the transmission timing of the HARQ ACK/NACK defined in a conventional LTE for the TDD UL/DL configuration of the Pcell; (909) Retransmission or determining new data retransmission; (911) Each subframe state of the Pcell/Scell of the subframe n when the PDSCH is transmitted; (913) Transmitting the PDCCH in the subframe n of the Pcell or the Scell, Transmitting the PDCCH in the subframe n of the Scell; (915) Transmitting the PDCCH in the nearest DL subframe before the subframe n or in the subframe n of the Scell, transmitting the PDSCH in the subframe n of the Scell; (917) Receiving the HARQ ACK/NACK in the UL subframe of the Pcell according to the transmission timing of the HARQ ACK/NACK defined in rule 3 and 4; (AA) Start
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