Effective method and device for transmitting control information for supporting uplink multi-antenna transmission

A method for performing uplink (UL) MIMO (Multiple Input Multiple Output) transmission by a user equipment (UE), the method comprising:

• receiving downlink control information (DCI) scheduling UL transmission of a first transport block (TB) and a second transport block (TB) from a base station (BS) through a physical downlink control channel (PDCCH);
• transmitting the first and second transport blocks (TBs) scheduled by the DCI to the base station (BS);
• receiving information indicating acknowledgement (ACK) or negative acknowledgement (NACK) of each of the received first and second transport blocks (TBs) from the base station (BS), using a first physical hybrid-automatic repeat request indicator channel (PHICH) resource with respect to the first transport block (TB), and using a second PHICH resource with respect to the second transport block (TB);
• transmitting retransmission of a negative-acknowledged transport block (NACK TB) to the base station (BS);
• and
• receiving, if the number of NACK transport blocks is different from the number of a plurality of transport blocks indicated by the PDCCH, ACK or NACK indication information for retransmission of the negative-acknowledged transport block (NACK TB) from the base station (BS) using the first PHICH resource.

A base station (BS) for transmitting control information of uplink (UL) MIMO (Multiple Input Multiple Output) transmission comprising:

• a reception module for receiving an uplink signal from a user equipment (UE);
• a transmission module for transmitting a downlink signal to the user equipment (UE);
• and
• a processor for controlling the base station (BS) including the reception module and the transmission module,
• wherein the processor enables the transmission module to transmit downlink control information (DCI) scheduling UL transmission of a first transport block (TB) and a second transport block (TB) to a user equipment (UE) through a physical downlink control channel (PDCCH), enables the reception module to receive the first and second transport blocks (TBs) scheduled by the DCI from the user equipment (UE), enables the transmission module to transmit information indicating acknowledgement (ACK) or negative acknowledgement (NACK) of each of the received first and second transport blocks (TBs) to the user equipment (UE), using a first physical hybrid-automatic repeat request indicator channel (PHICH) resource with respect to the first transport block (TB), and using a second PHICH resource with respect to the second transport block (TB), enables the reception module to receive retransmission of a negative-acknowledged transport block (NACK TB) from the user equipment (UE), and enables the transmission module to transmit, if the number of NACK transport blocks is different from the number of a plurality of transport blocks indicated by the PDCCH, ACK or NACK indication information for retransmission of the negative-acknowledged transport block (NACK TB) to the user equipment (UE) using the first PHICH resource.

A user equipment (UE) for performing uplink (UL) MIMO (Multiple Input Multiple Output) transmission comprising:

• a reception module for receiving a downlink signal from a base station (BS);
• a transmission module for transmitting an uplink signal to the base station (BS);
• and
• a processor for controlling the user equipment (UE) including the reception module and the transmission module,
• wherein the processor enables the reception module to receive downlink control information (DCI) scheduling UL transmission of a first transport block (TB) and a second transport block (TB) from a base station (BS) through a physical downlink control channel (PDCCH), enables the transmission module to transmit the first and second transport blocks (TBs) scheduled by the DCI to the base station (BS), enables the reception module to receive information indicating acknowledgement (ACK) or negative acknowledgement (NACK) of each of the received first and second transport blocks (TBs) from the base station (BS), using a first physical hybrid-automatic repeat request indicator channel (PHICH) resource with respect to the first transport block (TB), and using a second PHICH resource with respect to the second transport block (TB), enables the transmission module to transmit retransmission of a negative-acknowledged transport block (NACK TB) to the base station (BS), and enables the reception module to receive, if the number of NACK transport blocks is different from the number of a plurality of transport blocks indicated by the PDCCH, ACK or NACK indication information for retransmission of the negative-acknowledged transport block (NACK TB) from the base station (BS) using the first PHICH resource.