Method and apparatus for transmitting and receiving control information in wireless communication system
A method and an apparatus of transmitting and receiving control information in a wireless communication system is disclosed. A method of transmitting control information in a wireless communication system according to an embodiment of the present disclosure may include receiving, from a base station, first configuration information for configuring HARQ (Hybrid Automatic Repeat and request)-ACK (acknowledgement) bundling for one or more serving cells among a plurality of serving cells configured for the terminal; receiving, from the base station, downlink control information (DCI) for scheduling one or more physical downlink shared channels (PDSCH) on each of the plurality of serving cells; receiving, from the base station, a plurality of PDSCHs on the plurality of serving cells; and transmitting, to the base station, control information including a HARQ-ACK codebook generated based on HARQ-ACK information for the plurality of PDSCHs.
1. A method of transmitting HARQ (Hybrid Automatic Repeat and request)-ACK(acknowledgement) information in a wireless communication system, the method performed by a terminal, the method comprising:
receiving first configuration information indicating a number of HARQ bundling groups;
receiving downlink control information (DCI) for scheduling one or more physical downlink shared channels (PDSCH) on each of a plurality of serving cells;
receiving a plurality of PDSCHs on the plurality of serving cells; and
transmitting HARQ-ACK information for the plurality of PDSCHs,
wherein based on the first configuration information being provided, the HARQ-ACK information is generated over PDSCH reception groups for the plurality of PDSCHs,
wherein a NACK (negative ACK) value is generated for a PDSCH reception group associated only with PDSCHs that overlap with uplink symbols,
wherein a HARQ-ACK codebook corresponding to the HARQ-ACK information includes a first HARQ-ACK sub-codebook and a second HARQ-ACK sub-codebook, and
wherein based on the number of the HARQ bundling groups being set to 1 for one or more first serving cells and the number of HARQ bundling groups being set greater than 1 for one or more second serving cells, the first HARQ-ACK sub-codebook is determined for the one or more first serving cells and the second HARQ-ACK sub-codebook is determined for the one or more second serving cells.
2. The method of claim 1 , further comprising:
receiving second configuration information for configuring multi-PDSCH scheduling for scheduling a plurality of PDSCHs by a single DCI for one or more serving cells among the plurality of serving cells.
3. The method of claim 2 ,
wherein the first HARQ-ACK sub-codebook is determined for the one or more first serving cells for which the multi-PDSCH scheduling is not configured or the number of the HARQ bundling groups is set to 1, among the plurality of serving cells,
wherein the second HARQ-ACK sub-codebook is determined for one or more second serving cells for which the number of HARQ bundling groups is set greater than 1 or the HARQ bundling is not configured, among one or more serving cells configured the multi-PDSCH scheduling.
4. The method of claim 1 ,
wherein, based on the HARQ bundling being configured for the one or more second serving cells, the second HARQ-ACK sub-codebook is determined based on a first HARQ-ACK information bits,
wherein the number of the first HARQ-ACK information bits corresponds to a maximum value between products of the number of HARQ bundling groups and a value of X across all of the one or more second serving cells,
wherein for a cell for which PDSCH reception carrying two transport blocks is configured and spatial bundling for HARQ-ACK information is configured, the X value is 1.
5. The method of claim 1 ,
wherein, based on the HARQ bundling being not configured for the one or more second serving cells, the second HARQ-ACK sub-codebook is determined based on a second HARQ-ACK information bits,
wherein the number of the second HARQ-ACK information bits corresponds to a maximum value between products of the number of PDSCHs schedulable by a single DCI and a value of X across all of the one or more second serving cells,
wherein for a cell for which PDSCH reception carrying two transport blocks is configured and spatial bundling for HARQ-ACK information is configured, the X value is 1.
6. The method of claim 1 ,
wherein a counter downlink assignment index (C-DAI) value and a total downlink assignment index (T-DAI) value of the DCI apply separately for each of the first HARQ-ACK sub-codebook and the second HARQ-ACK sub-codebook.
7. The method of claim 1 , wherein the HARQ-ACK codebook is determined by appending the second HARQ-ACK sub-codebook to the first HARQ-ACK sub-codebook.
8. The method of claim 1 , wherein HARQ-ACK information for each of the PDSCH reception groups is generated by performing a logical AND operation on HARQ-ACK information bits for a plurality of PDSCHs included in each of the PDSCH reception groups.
9. The method of claim 1 , wherein, based on one or more PDSCHs overlapped with uplink symbols being included in a group, HARQ-ACK information for the one or more PDSCHs is regarded as an ACK value or a NACK value.
10. A terminal for transmitting HARQ (Hybrid Automatic Repeat and request)-ACK(acknowledgement) information in a wireless communication system, the terminal comprising:
at least one transceiver for transmitting and receiving a wireless signal; and
at least one processor for controlling the at least one transceiver,
wherein the at least one processor is configured to:
receive first configuration information indicating a number of HARQ bundling groups;
receive downlink control information (DCI) for scheduling one or more physical downlink shared channels (PDSCH) on each of a plurality of serving cells;
receive a plurality of PDSCHs on the plurality of serving cells; and
transmit HARQ-ACK information for the plurality of PDSCHs,
wherein based on the first configuration information being provided, the HARQ-ACK information is generated over PDSCH reception groups for the plurality of PDSCHs,
wherein a NACK (negative ACK) value is generated for a PDSCH reception group associated only with PDSCHs that overlap with uplink symbols,
wherein a HARQ-ACK codebook corresponding to the HARQ-ACK information includes a first HARQ-ACK sub-codebook and a second HARQ-ACK sub-codebook, and
wherein based on the number of the HARQ bundling groups being set to 1 for one or more first serving cells and the number of HARQ bundling groups being set greater than 1 for one or more second serving cells, the first HARQ-ACK sub-codebook is determined for the one or more first serving cells and the second HARQ-ACK sub-codebook is determined for the one or more second serving cells.
11. A method of receiving HARQ (Hybrid Automatic Repeat and request)-ACK(acknowledgement) information in a wireless communication system, the method performed by a base station, the method comprising:
transmitting first configuration information indicating a number of HARQ bundling groups;
transmitting downlink control information (DCI) for scheduling one or more physical downlink shared channels (PDSCH) on each of a plurality of serving cells;
transmitting a plurality of PDSCHs on the plurality of serving cells; and
receiving HARQ-ACK information for the plurality of PDSCHs,
wherein based on the first configuration information being provided, the HARQ-ACK information is generated over PDSCH reception groups for the plurality of PDSCHs,
wherein a NACK (negative ACK) value is generated for a PDSCH reception group associated only with PDSCHs that overlap with uplink symbols,
wherein a HARQ-ACK codebook corresponding to the HARQ-ACK information includes a first HARQ-ACK sub-codebook and a second HARQ-ACK sub-codebook, and
wherein based on the number of the HARQ bundling groups being set to 1 for one or more first serving cells and the number of HARQ bundling groups being set greater than 1 for one or more second serving cells, the first HARQ-ACK sub-codebook is determined for the one or more first serving cells and the second HARQ-ACK sub-codebook is determined for the one or more second serving cells.