Method for transmitting control information and apparatus therefor
The present invention relates to a wireless communication system. Specifically, the present invention relates to a method for transmitting uplink control information and an apparatus therefore, which includes the steps of selecting one uplink control channel resource corresponding to a plurality of HARQ-ACKs from a plurality of uplink control channel resources, and transmitting bit values corresponding to the plurality of HARQ-ACKs using the selected uplink control channel resource.
1. A method for transmitting uplink control information by a communication apparatus configured with a plurality of cells including a primary cell and a secondary cell in a wireless communication system, the method comprising:
selecting a PUCCH (Physical Uplink Control Channel) resource corresponding to HARQ-ACK (Hybrid Automatic Repeat reQuest-Acknowledgement)(0), HARQ-ACK(1) and HARQ-ACK(2) from a plurality of PUCCH resources, according to a relation including Table 1; and
transmitting b(0)b(1) corresponding to the HARQ-ACK (0), the HARQ-ACK(1) and the HARQ-ACK(2) using the selected PUCCH resource, wherein the b(0)b(1) is given according to the relation including Table 1,
TABLE 1
HARQ-
HARQ-
HARQ-
ACK(0)
ACK(1)
ACK(2)
n (1) PUCCH, i
b(0)b(1)
ACK
ACK
NACK/DTX
n (1) PUCCH, 0
11
ACK
NACK
NACK/DTX
n (1) PUCCH, 0
10
NACK
ACK
NACK/DTX
n (1) PUCCH, 0
01
NACK
NACK
DTX
n (1) PUCCH, 0
00
NACK/DTX
NACK/DTX
ACK
n (1) PUCCH, 2
11
NACK/DTX
NACK/DTX
NACK
n (1) PUCCH, 2
00
where the HARQ-ACK(0) and the HARQ-ACK(1) indicate ACK/NACK(Negative ACK)/DTX(Discontinuous Transmission) responses to data blocks related to a first cell, the HARQ-ACK(2) indicates ACK/NACK/DTX response to a data block related to a second cell, n(1)PUCCH, i (i=0, 1, 2) indicates the plurality of PUCCH resources, n(1)PUCCH,0 indicates a PUCCH resource linked to a PDCCH (Physical Downlink Control Channel) on the first cell, and n(1)PUCCH,2 indicates a PUCCH resource linked to a PDCCH on the second cell.
2. The method of claim 1 , wherein the first cell is a cell configured to support up to 2 transport blocks, and the second cell is a cell configured to support up to 1 transport block.
3. The method of claim 1 , wherein the first cell is a MIMO (Multiple Input Multiple Output) cell, and the second cell is a non-MIMO cell.
4. The method of claim 1 , wherein the first cell includes a first component carrier (CC) and the second cell includes a second component carrier (SCC).
5. A communication apparatus configured with a plurality of cells and configured to transmit uplink control information in a wireless communication system, the communication apparatus comprising:
a radio frequency (RF) unit; and
a processor,
wherein the processor is configured to select a PUCCH (Physical Uplink Control Channel) resource corresponding to HARQ-ACK (Hybrid Automatic Repeat reQuest-Acknowledgement)(0), HARQ-ACK(1) and HARQ-ACK(2) from a plurality of PUCCH resources, according to a relation including Table 1, and to transmit b(0)b(1) corresponding to the HARQ-ACK(0), the HARQ-ACK(1) and the HARQ-ACK(2) using the selected PUCCH resource, wherein the b(0)b(1) is given according to the relation including Table 1,
TABLE 1
HARQ-
HARQ-
HARQ-
ACK(0)
ACK(1)
ACK(2)
n (1) PUCCH, i
b(0)b(1)
ACK
ACK
NACK/DTX
n (1) PUCCH, 0
11
ACK
NACK
NACK/DTX
n (1) PUCCH, 0
10
NACK
ACK
NACK/DTX
n (1) PUCCH, 0
01
NACK
NACK
DTX
n (1) PUCCH, 0
00
NACK/DTX
NACK/DTX
ACK
n (1) PUCCH, 2
11
NACK/DTX
NACK/DTX
NACK
n (1) PUCCH, 2
00
where the HARQ-ACK(0) and the HARQ-ACK(1) indicate ACK/NACK(Negative ACK)/DTX(Discontinuous Transmission) responses to data blocks related to a first cell, the HARQ-ACK(2) indicates ACK/NACK/DTX response to a data block related to a second cell, n(1)PUCCH, i (i=0, 1, 2) indicates the plurality of PUCCH resources, n(1)PUCCH,0 indicates a PUCCH resource linked to a PDCCH (Physical Downlink Control Channel) on the first cell, and n(1)PUCCH,2 indicates a PUCCH resource linked to a PDCCH on the second cell.
6. The communication apparatus of claim 5 , wherein the first cell is a cell configured to support up to 2 transport blocks, and the second cell is a cell configured to support up to 1 transport block.
7. The communication apparatus of claim 5 , wherein the first cell is a MIMO (Multiple Input Multiple Output) cell, and the second cell is a non-MIMO cell.
8. The communication apparatus of claim 5 , wherein the first cell includes a first component carrier (CC) and the second cell includes a second component carrier (SCC).