Method for transmitting control information in wireless communication system and apparatus therefor
A method for transmitting ACK/NACK (Acknowledgement/Negative ACK) signals in a wireless communication system is disclosed. The method comprises receiving a plurality of data blocks from a base station; generating ACK/NACK signals corresponding to the plurality of data blocks; allocating resources for transmitting ACK/NACK signals, wherein the resources are allocated independently per slot; and transmitting the ACK/NACK signals through one uplink component carrier by using the allocated resources. Preferably, the step of allocating resources includes allocating the resources to minimize the difference in the number of the ACK/NACK signals transmitted per slot.
1. A method for generating ACK/NACK (Acknowledgement/Negative ACK) information at a user equipment in a wireless communication system, the method comprising:
receiving a plurality of codewords corresponding to data blocks via physical downlink shared channels (PDSCHs) through a plurality of downlink carriers from a base station, wherein each of the plurality of downlink carriers carries two or more codewords;
generating the ACK/NACK information by concatenating ACK/NACK bits corresponding to the plurality of codewords in accordance with an index order of the downlink carriers and an index order of the two or more codewords associated with each of the downlink carriers; and
transmitting the ACK/NACK information via a physical uplink control channel (PUCCH) through one uplink carrier to the base station.
2. The method of claim 1 , wherein a number of codewords received through each of the plurality of downlink carriers depends on a transmission mode for each of the plurality of downlink carriers.
3. The method of claim 1 , wherein a number of codewords received through each of the plurality of downlink carriers is configured by a higher layer.
4. A user equipment comprising:
a receiving module configured to receive a plurality of codewords corresponding to data blocks via physical downlink shared channels (PDSCHs) through a plurality of downlink carriers from a base station, wherein each of the plurality of downlink carriers carries two or more codewords;
a processor configured to generate ACK/NACK (Acknowledgement/Negative ACK) information by concatenating ACK/NACK bits corresponding to the plurality of codewords in accordance with an index order of the downlink carriers and an index order of the two or more codewords associated with each of the downlink carriers; and
a transmitting module configured to transmit the ACK/NACK information via a physical uplink control channel (PUCCH) through one uplink carrier to the base station.
5. The user equipment of claim 4 , wherein a number of codewords received through each of the plurality of downlink carriers depends on a transmission mode for each of the plurality of downlink carriers.
6. The user equipment of claim 4 , wherein a number of codewords received through each of the plurality of downlink carriers is configured by a higher layer.