Method and apparatus for transmitting control information
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus for transmitting uplink control information in the event of a plurality of cell, wherein the method comprises the following steps; receiving a PPCCH and/or a PDSCH; generating reception acknowledgement information for said PDCCH and/or PDSCH: and transmitting the reception acknowledgement information in an SR subframe via a PUCCH.
1. A method for transmitting uplink control information at a communication device configured with a Primary Cell (PCell) and a Secondary Cell (SCell) in a wireless communication system, the method comprising:
receiving, by the communication device, two or more data blocks for the PCell and two or more data blocks for the SCell; and
transmitting, by the communication device, reception response information in response to the two or more data blocks for the PCell and the two or more data blocks for the SCell on a subframe configured for a scheduling request (SR) transmission using a physical uplink control channel (PUCCH) resource,
wherein, for a negative SR, the PUCCH resource is a hybrid automatic repeat request acknowledgement (HARQ-ACK) PUCCH resource,
wherein, for a positive SR, the reception response information is bundled for each of the PCell and the SCell and mapped to a first bit b( 0 ) and a second bit b( 1 ), and the PUCCH resource is a predetermined SR PUCCH resource, and
wherein the first bit b( 0 ) and the second bit b( 1 ) represent bundled HARQ-ACK responses as follows:
Bundled
Bundled
HARQ-ACK
HARQ-ACK
b(0), b(1)
response for the PCell
response for the SCell
11
ACK
ACK
10
ACK
NACK/DTX
01
NACK/DTX
ACK
00
NACK/DTX
NACK/DTX
wherein NACK/DTX indicates negative acknowledgement (NACK) or discontinuous transmission (DTX).
2. The method of claim 1 , wherein, for the negative SR, the reception response information is transmitted in accordance with a channel selection method.
3. The method of claim 2 , wherein the channel selection method comprises:
selecting the PUCCH resource for the HARQ-ACK from multiple HARQ-ACK PUCCH resources, and
transmitting a bit value corresponding to the reception response information using the selected HARQ-ACK PUCCH resource.
4. The method of claim 1 ,
wherein the communication device is set to a frequency division duplex (FDD) mode, and
wherein the communication device is set to a channel selection mode for transmitting reception response information.
5. A communication device configured with a Primary Cell (PCell) and a Secondary Cell (SCell) in a wireless communication system to transmit uplink control information, the communication device comprising:
a Radio Frequency (RF) unit; and
a processor operably coupled with the RF unit,
wherein the processor is configured to receive two or more data blocks for the PCell and two or more data blocks for the SCell, and to transmit reception response information in response to the two or more data blocks for the PCell and the two or more data blocks for the SCell on a subframe configured for a scheduling request (SR) transmission through a physical uplink control channel (PUCCH) resource,
wherein, for a negative SR, the PUCCH resource is a hybrid automatic repeat request acknowledgement (HARQ-ACK) PUCCH resource,
wherein, for a positive SR, the reception response information is bundled for each of the PCell and the SCell and mapped to a first bit b( 0 ) and a second bit b( 1 ), and the PUCCH resource is a predetermined SR PUCCH resource, and
wherein the first bit b( 0 ) and the second bit b( 1 ) represent bundled HARQ-ACK responses as follows:
Bundled
Bundled
HARQ-ACK
HARQ-ACK
b(0), b(1)
response for the PCell
response for the SCell
11
ACK
ACK
10
ACK
NACK/DTX
01
NACK/DTX
ACK
00
NACK/DTX
NACK/DTX
wherein NACK/DTX indicates negative acknowledgement (NACK) or discontinuous transmission (DTX).
6. The communication device of claim 5 , wherein, for the negative SR, the reception response information is transmitted in accordance with a channel selection method.
7. The communication device of claim 6 , wherein the channel selection method comprises:
selecting the PUCCH resource for the HARQ-ACK from multiple HARQ-ACK PUCCH resources, and
transmitting a bit value corresponding to the reception response information using the selected HARQ-ACK PUCCH resource.
8. The communication device of claim 5 ,
wherein the communication device is set to a frequency division duplex (FDD) mode, and
wherein the communication device is set to a channel selection mode for transmitting reception response information.