Method and apparatus for transmitting reception acknowledgement information in wireless communication system
A method and an apparatus for transmitting a reception acknowledgement for hybrid automatic repeat request (HARQ) of a user equipment (UE). The reception acknowledgement may be an ACK signal or a NACK signal for physical downlink shared channels (PDSCHs). The reception acknowledgement is transmitted on a physical uplink control channel (PUCCH), and the UE selects a resource of the PUCCH based on a number of the received physical downlink control channels. That is, the UE selects a first PUCCH resource for a number of the received PDCCHs being less than a pre-defined number, and the UE selects a second PUCCH resource for a number of the received PDCCHs being equal to or greater than the pre-defined number.
1. A method for transmitting a reception acknowledgement for hybrid automatic repeat request (HARQ) of a user equipment (UE) in a wireless communication system, the method comprising:
receiving a plurality of physical downlink control channels (PDCCHs);
receiving a plurality of physical downlink shared channels (PDSCHs) via a plurality of downlink component carriers (DL CCs); and
transmitting a positive-acknowledgement (ACK) signal or a negative-acknowledgement (NACK) signal for the PDSCHs on a physical uplink control channel (PUCCH),
wherein the UE selects a resource of the PUCCH based on a number of the received PDCCHs from a plurality of PUCCH resources, and
wherein the UE selects a first PUCCH resource of the plurality of PUCCH resources for a number of the received PDCCHs being less than a pre-defined number, and the UE selects a second PUCCH resource of the plurality of PUCCH resources for the number of the received PDCCHs being equal to or greater than the pre-defined number.
2. The method of claim 1 , wherein allocation information related to the plurality of PUCCH resources is received by the UE via a radio resource control (RRC) message.
3. A user equipment (UE) for transmitting a reception acknowledgement for hybrid automatic repeat request (HARQ) in a wireless communication system, the UE comprising:
a memory storing messages received via a radio signal; and
a processor operably coupled to the memory and configured for:
receiving a plurality of physical downlink control channels (PDCCHs);
receiving a plurality of physical downlink shared channels (PDSCHs) via a plurality of downlink component carriers (DL CCs); and
transmitting a positive-acknowledgement (ACK) signal or a negative-acknowledgement (NACK) signal for the PDSCHs on a physical uplink control channel (PUCCH),
wherein the UE selects a resource of the PUCCH based on a number of the received PDCCHs from a plurality of PUCCH resources, and
wherein the UE selects a first PUCCH resource of the plurality of PUCCH resources for a number of the received PDCCHs being less than a pre-defined number, and the UE selects a second PUCCH resource of the plurality of PUCCH resources for the number of the received PDCCHs being equal to or greater than the pre-defined number.
4. The UE of claim 3 , wherein allocation information related to the plurality of PUCCH resources is received by the UE via a radio resource control (RRC) message.