Method and user equipment for transmitting ACK/NACK information, and method and base station for receiving ACK/NACK information

A method for receiving acknowledgement/negative acknowledgement (ACK/NACK) information by a base station in a wireless communication system, the method comprising:

• transmitting a physical downlink control channel (PDCCH) to a user equipment;
• transmitting physical uplink control channel (PUCCH) resource information for ACK/NACK repetition to the user equipment;
• performing an initial reception of the ACK/NACK information from a first antenna port of the user equipment and a second antenna port of the user equipment;
• and
• performing a repetition reception of the ACK/NACK information from the first antenna port and the second antenna port based on the PUCCH resource information,
• wherein the initial reception of the ACK/NACK information is received from the first antenna port using a first PUCCH resource n(1)PUCCH,1 and from the second antenna port using a second PUCCH resource n(1)PUCCH,2, where n(1)PUCCH,1=nCCE+N(1)PUCCH and n(1)PUCCH,2=nCCE+1+N(1)PUCCH, where nCCE is a lowest control channel element (CCE) index from among CCE indexes of the PDCCH, and N(1)PUCCH is configured by a higher layer, and
• wherein the repetition reception of the ACK/NACK information is received from the first antenna port using a third PUCCH resource n(1)PUCCH,3 and from the second antenna port using a fourth PUCCH resource n(1)PUCCH,4, where n(1)PUCCH,3 and n(1)PUCCH,4 are configured for the first antenna port and the second antenna port, respectively, by the PUCCH resource information.

A user equipment for transmitting acknowledgement/negative acknowledgement (ACK/NACK) information in a wireless communication system, the user equipment comprising:

• a receiver;
• a transmitter;
• and
• a processor for controlling the receiver and the transmitter,
• wherein the processor controls the receiver to receive a physical downlink control channel (PDCCH) and to receive physical uplink control channel (PUCCH) resource information for ACK/NACK repetition, and
• the processor controls the transmitter to perform an initial transmission of the ACK/NACK information through a first antenna port and through a second antenna port, and controls the transmitter to perform a repetition transmission of the ACK/NACK information through the first antenna port and the second antenna port based on the PUCCH resource information,
• wherein the initial transmission of the ACK/NACK information is performed through the first antenna port using a first PUCCH resource n(1)PUCCH,1 and through the second antenna port using a second PUCCH resource n(1)PUCCH,2, where n(1)PUCCH,1=nCCE+N(1)PUCCH and n(1)PUCCH,2=nCCE+1+N(1)PUCCH, where nCCE is a lowest control channel element (CCE) index from among CCE indexes of the PDCCH, and N(1)PUCCH is configured by a higher layer, and
• wherein the repetition transmission of the ACK/NACK information is performed through the first antenna port using a third PUCCH resource n(1)PUCCH,3 and through the second antenna port using a fourth PUCCH resource n(1)PUCCH,4, where n(1)PUCCH,3 and n(1)PUCCH,4 are configured for the first antenna port and the second antenna port, respectively, by the PUCCH resource information.

A base station for receiving acknowledgement/negative acknowledgement (ACK/NACK) information by a base station in a wireless communication system, the base station comprising:

• a receiver;
• a transmitter;
• and
• a processor for controlling the receiver and the transmitter,
• wherein the processor controls the transmitter to transmit a physical downlink control channel (PDCCH) to a user equipment and transmit physical uplink control channel (PUCCH) resource information for ACK/NACK repetition to the user equipment, and the processor controls the receiver to perform an initial reception of the ACK/NACK information from a first antenna port of the user equipment and a second antenna port of the user equipment, and controls the receiver to perform a repetition reception of the ACK/NACK information from the first antenna port and the second antenna port based on the PUCCH resource information,
• wherein the initial reception of the ACK/NACK information is received from the first antenna port using a first PUCCH resource n(1)PUCCH,1 and from the second antenna port using a second PUCCH resource n(1)PUCCH,2, where n(1)PUCCH,1=nCCE+N(1)PUCCH and n(1)PUCCH,2=nCCE+1+N(1)PUCCH, where nCCE is a lowest control channel element (CCE) index from among CCE indexes of the PDCCH, and N(1)PUCCH is configured by a higher layer, and
• wherein the repetition reception of the ACK/NACK information is received from the first antenna port using a third PUCCH resource n(1)PUCCH,3 and from the second antenna port using a fourth PUCCH resource n(1)PUCCH,4, where n(1)PUCCH,3 and n(1)PUCCH,4 are configured for the first antenna port and the second antenna port, respectively, by the PUCCH resource information.