Method and apparatus for controlling uplink control information in wireless communication system
Provided is a method and an apparatus for transmitting uplink control information by a terminal in wireless communication system. When a PUCCH resource used for transmitting only periodic CSI from a subframe, the resource is a first resource, and a resource indicated by ARI is a second resource, when a setting allows transmitting together ACK/NACK and the periodic CSI through a PUCCH from the same subframe, the first resource and the second resource are mutually exclusive, and the second resource that is used for transmitting together the ACK/NACK and the periodic CSI uses the resource indicated by the ARI from resources determined by an RRC.
1. A method for receiving uplink control information (UCI), performed by a base station (BS) in a wireless communication system, the method comprising:
transmitting a data unit to a user equipment (UE) in a downlink subframe; and
receiving acknowledgement/not-acknowledgement (ACK/NACK) for the data unit from the UE in an uplink subframe,
wherein when the BS sets the UE to simultaneously transmit periodic channel state information (CSI) and the ACK/NACK, and when the BS indicates one resource for a physical uplink control channel (PUCCH) by a specific field included in downlink control information (DCI) among a plurality of resources, the periodic CSI and the ACK/NACK are received using the one resource for the PUCCH in the uplink subframe.
2. The method of claim 1 , wherein uplink subframes in which the periodic CSI can be transmitted by the UE are predetermined by the BS.
3. The method of claim 1 , wherein a PUCCH format in which the ACK/NACK is transmitted by the UE is predetermined to one of a plurality of PUCCH formats by the BS.
4. The method of claim 3 , wherein up to 22 information bits are received through the predetermined one of the plurality of PUCCH formats.
5. The method of claim 1 , wherein the DCI is transmitted through a physical downlink control channel (PDCCH) of the downlink subframe.
6. The method of claim 1 , wherein the data unit is a codeword transmitted through a physical downlink shared channel (PDSCH) of the downlink subframe or a PDCCH indicating a release of semi-persistent scheduling (SPS) transmitted in the downlink subframe.
7. A base station (BS) for receiving uplink control information, the BS comprising:
a transceiver for transmitting or receiving a radio signal; and
a processor that controls the transceiver to:
transmit a data unit to a user equipment (UE) in a downlink subframe; and
receive acknowledgement/not-acknowledgement (ACK/NACK) for the data unit from the UE in an uplink subframe,
wherein when the BS sets the UE to simultaneously transmit periodic channel state information (CSI) and the ACK/NACK, and when the BS indicates one resource for a physical uplink control channel (PUCCH) by a specific field included in downlink control information (DCI) among a plurality of resources, the periodic CSI and the ACK/NACK are received using the one resource for the PUCCH in the uplink subframe.
8. The BS of claim 7 , wherein uplink subframes in which the periodic CSI can be transmitted by the UE are predetermined by the BS.
9. The BS of claim 7 , wherein a PUCCH format in which the ACK/NACK is transmitted by the UE is predetermined to one of a plurality of PUCCH formats by the BS.
10. The BS of claim 9 , wherein up to 22 information bits are received through the predetermined one of the plurality of PUCCH formats.
11. The BS of claim 7 , wherein the DCI is transmitted through a physical downlink control channel (PDCCH) of the downlink subframe.
12. The BS of claim 7 , wherein the data unit is a codeword transmitted through a physical downlink shared channel (PDSCH) of the downlink subframe or a PDCCH indicating a release of semi-persistent scheduling (SPS) transmitted in the downlink subframe.
13. A method for receiving uplink control information (UCI), performed by a base station (BS) in a wireless communication system, the method comprising:
transmitting data units to a user equipment (UE) through a plurality of cells; and
receiving acknowledgement/not-acknowledgement's (ACK/NACKs) for the data units from the UE in an uplink subframe,
wherein when the BS sets the UE to simultaneously transmit periodic channel state information (CSI) and the ACK/NACKs, and when the BS indicates one resource for a physical uplink control channel (PUCCH) by a specific field included in downlink control information (DCI) among a plurality of resources, the periodic CSI and the ACK/NACKs are received using the one resource for the PUCCH in the uplink subframe.
14. The method of claim 13 , wherein the plurality of cells comprises a primary cell and a secondary cell.
15. The method of claim 13 , wherein each of the data units is a codeword transmitted through a physical downlink shared channel (PDSCH) or a physical downlink control channel (PDCCH) indicating a release of semi-persistent scheduling (SPS).
16. The method of claim 13 , wherein a PUCCH format in which the ACK/NACKs are transmitted by the UE is configured by the BS.
17. The method of claim 16 , wherein up to 22 information bits are received through the PUCCH format.
18. A base station (BS) for receiving uplink control information, the BS comprising:
a transceiver for transmitting or receiving a radio signal; and
a processor that controls the transceiver to:
transmit data units to a user equipment (UE) through a plurality of cells; and
receive acknowledgement/not-acknowledgement's (ACK/NACKs) for the data units from the UE in an uplink subframe,
wherein when the BS sets the UE to simultaneously transmit periodic channel state information (CSI) and the ACK/NACKs, and when the BS indicates one resource for a physical uplink control channel (PUCCH) by a specific field included in downlink control information (DCI) among a plurality of resources, the periodic CSI and the ACK/NACKs are received using the one resource for the PUCCH in the uplink subframe.
19. The BS of claim 18 , wherein the plurality of cells comprises a primary cell and a secondary cell.
20. The BS of claim 18 , wherein each of the data units is a codeword transmitted through a physical downlink shared channel (PDSCH) or a physical downlink control channel (PDCCH) indicating a release of semi-persistent scheduling (SPS).
21. The BS of claim 18 , wherein a PUCCH format in which the ACK/NACKs are transmitted by the UE is configured by the BS.
22. The BS of claim 21 , wherein up to 22 information bits are received through the PUCCH format.