Method for transmitting control information and device therefor
A method for transmitting uplink control information and a corresponding device, where the method which include receiving at least one of one or more PDCCH signals and one or more PDSCH signals and generating entire received response information with respect to one or more PDCCH signals and one or more PDSCH signals. Multiple received response information are contained in entire received response information and generated per cell and per subframe. If being a subframe in which a plurality of transport blocks (TBs) are received in a cell, DTX (discontinuous transmission) state and all negative acknowledgement (NACK) state are mapped to same bit values for the cell and the subframe. If being a subframe in which only one TB is received in a cell, DTX state and all NACK state are mapped to different bit values for the cell and the subframe.
1. A method of transmitting uplink control information at a communication apparatus configured with a plurality of cells in a wireless communication system, the method comprising:
receiving at least one of one or more Physical Downlink Control Channel (PDCCH) signals and one or more Physical Downlink Shared Channel (PDSCH) signals through one or more subframes on the plurality of cells; and
generating entire received response information of the one or more PDCCH signals and the one or more PDSCH signals, wherein multiple received response information contained in the entire received response information are generated per cell and per subframe,
wherein, if there is a subframe in which a plurality of transport blocks (TBs) are received in a cell configured to support transmission of the multiple transport blocks (TBs), DTX (discontinuous transmission) state and all negative acknowledgement (NACK) state are mapped to the same bit values for the cell and the subframe, and
if there is a subframe in which only one transport block (TB) is received in a cell configured to support transmission of multiple transport blocks (TBs), DTX state and all NACK state are mapped to different bit values for the cell and the subframe.
2. The method according to claim 1 , wherein the generating the received response information in a cell configured to support transmission of the multiple transport blocks (TBs) includes:
mapping a received response state of the corresponding subframe to a bit value shown in the following table:
TABLE
In case of subframe in which
In case of subframe in which
Bit value
only one TB is received
2 TBs are received
A
DTX
DTX or NACK/NACK
B
NACK
NACK/ACK
C
ACK
ACK/NACK
D
—
ACK/ACK
where each of A, B, C and D indicates different two bit values.
3. The method according to claim 1 , wherein a payload size of the entire received response information is given according to the number of cells configured in the communication apparatus.
4. The method according to claim 1 , further comprising:
determining a physical uplink control channel (PUCCH) transmission power for transmission of the entire received response information,
wherein the PUCCH transmission power is determined on the basis of the number of valid bits from among bits contained in the entire received response information.
5. The method according to claim 1 , further comprising:
determining a physical uplink control channel (PUCCH) transmission power for transmission of the entire received response information,
wherein the PUCCH transmission power is determined on the basis of the number of activated cells from among the plurality of cells.
6. The method according to claim 1 , wherein the entire received response information includes a plurality of per-cell received response information parts concatenated in increasing order of a cell index, and the each per-cell received response information part includes one or more received response information parts concatenated in order of a subframe index.
7. The method according to claim 1 , further comprising:
Transmitting the entire received response information using PUCCH format 3.
8. A communication apparatus configured to transmit uplink control information in a wireless communication system including a plurality of cells, the communication apparatus comprising:
a Radio Frequency (RF) unit; and
a processor,
wherein the processor is configured to receive at least one of one or more Physical Downlink Control Channel (PDCCH) signals and one or more Physical Downlink Shared Channel (PDSCH) signals through one or more subframes in the plurality of cells, and to generate entire received response information of the one or more PDCCH signals and the one or more PDSCH signals wherein multiple received response information sets contained in the entire received response information are generated per cell and per subframe,
wherein, if there is a subframe in which a plurality of transport blocks (TBs) are received in a cell configured to support transmission of multiple transport blocks (TBs), DTX (discontinuous transmission) state and all negative acknowledgement (NACK) state are mapped to the same bit values for the cell and the subframe, and
if there is a subframe in which only one transport block (TB) is received in a cell configured to support transmission of multiple transport blocks (TBs), DTX state and all NACK state are mapped to different bit values for the cell and the subframe.
9. The communication apparatus according to claim 8 , wherein the generating the received response information in a cell configured to support transmission of the multiple transport blocks (TBs) includes:
mapping a received response state of the corresponding subframe to a bit value shown in the following table:
TABLE
In case of subframe in which
In case of subframe in which
Bit value
only one TB is received
2 TBs are received
A
DTX
DTX or NACK/NACK
B
NACK
NACK/ACK
C
ACK
ACK/NACK
D
—
ACK/ACK
where each of A, B, C and D indicates different two bit values.
10. The communication apparatus according to claim 8 , wherein a payload size of the entire received response information is given according to the number of cells configured in the communication apparatus.
11. The communication apparatus according to claim 8 , wherein the processor determines a physical uplink control channel (PUCCH) transmission power for transmission of the entire received response information, and the PUCCH transmission power is determined on the basis of the number of valid bits from among bits contained in the entire received response.
12. The communication apparatus according to claim 8 , wherein the processor determines a physical uplink control channel (PUCCH) transmission power for transmission of the entire received response information, and the PUCCH transmission power is determined on the basis of the number of activated cells from among the plurality of cells.
13. The communication apparatus according to claim 8 , wherein the entire received response information includes a plurality of per-cell received response information parts concatenated in increasing order of a cell index, and the each per-cell received response information part includes one or more received response information parts concatenated in order of a subframe index.
14. The communication apparatus according to claim 8 , wherein the processor is configured to transmit the entire received response information using PUCCH format 3.