Method for multiplexing uplink control information in wireless communication system, and apparatus using same
View Patent ↗A base station of a wireless communication is disclosed. A wireless communication base station comprises a communication module and a processor. The processor receives DCI of a physical downlink control channel (PDCCH) for scheduling a physical uplink shared channel (PUSCH) transmission over a plurality of slots and multiplexes hybrid automatic repeat request (HARQ)-ACK information to the PUSCH transmission by applying a value in a downlink assignment index (DAI) field of the DCI to each slot where the HARQ-ACK information is multiplexed to the PUSCH transmission over the plurality of slots.
1. A user equipment in a wireless communication system, the user equipment comprising:
a communication module; and
a processor configured to control the communication module, wherein the processor is configured to,
receive control information of a physical downlink control channel (PDCCH) for scheduling transmission of a physical uplink shared channel (PUSCH) in multiple slots, the control information including a downlink assignment index (DAI) field,
multiplex hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information in the PUSCH in any slot of at least two slots of the multiple slots by applying a same value of the DAI field of the control information, and transmit the PUSCH in the multiple slots.
2. The user equipment of claim 1 ,
wherein the at least two slots are determined according to one or more conditions for multiplexing the HARQ-ACK information in the PUSCH.
3. The user equipment of claim 1 ,
wherein a value of the DAI field is ‘1’ when 2 bits of the DAI field are ‘00’,
wherein the value of the DAI field is ‘2’ when 2 bits of the DAI field are ‘01’,
wherein the value of the DAI field is ‘3’ when 2 bits of the DAI field are ‘10’, and
wherein the value of the DAI field is ‘4’ when 2 bits of the DAI field are ‘11’.
4. The user equipment of claim 2 ,
wherein the at least two slots are determined by excluding one or more slots in which HARQ-ACK cannot be multiplexed for PUSCH in the plurality of slots according to the one or more conditions.
5. The user equipment of claim 4 ,
wherein the HARQ-ACK information is not multiplexed in the PUSCH in a slot for which a PDCCH scheduling a physical downlink shared channel (PDSCH) is not received.
6. The user equipment of claim 2 ,
wherein a specific condition among the one or more conditions is that the at least two slots satisfy a processing time condition of a PDSCH.
7. The user equipment of claim 6 ,
wherein the processing timing condition is determined according to a minimum time required for the user equipment to receive the PDCCH and to generate valid HARQ-ACK information.
8. The user equipment of claim 7 ,
wherein the HARQ-ACK information is not multiplexed to the PUSCH in a slot when the slot does not satisfy the processing timing condition.
9. The user equipment of claim 1 ,
wherein a number of bits the HARQ-ACK information is based on a value indicated by the DAI field.
10. The user equipment of claim 7 ,
wherein the processing timing condition is determined based on a position of the latest symbol of the PDSCH and a position of the earlier symbol of a start symbol of a PUCCH corresponding to the PDSCH and a start symbol of the PUSCH.
11. A method of operating a user equipment in a wireless communication system, the method comprising:
receiving control information of a physical downlink control channel (PDCCH) for scheduling transmission of a physical uplink shared channel (PUSCH) in multiple slots, the control information including a downlink assignment index (DAI) field;
multiplexing hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information in the PUSCH in any slot of at least two slots of the multiple slots by applying a same value of the DAI field of the control information; and
transmitting the PUSCH in the multiple slots.
12. The method of claim 11 ,
wherein the at least two slots are determined according to one or more conditions for multiplexing the HARQ-ACK information in the PUSCH.
13. The method of claim 11 ,
wherein a value of the DAI field is ‘1’ when 2 bits of the DAI field are ‘00’,
wherein the value of the DAI field is ‘2’ when 2 bits of the DAI field are ‘01’,
wherein the value of the DAI field is ‘3’ when 2 bits of the DAI field are ‘10’, and
wherein the value of the DAI field is ‘4’ when 2 bits of the DAI field are ‘11’.
14. The method of claim 12 ,
wherein the at least two slots are determined by excluding one or more slots in which HARQ-ACK cannot be multiplexed for PUSCH in the plurality of slots according to the one or more conditions.
15. The method of claim 14 ,
wherein the HARQ-ACK information is not multiplexed in the PUSCH in a slot for which a PDCCH scheduling a physical downlink shared channel (PDSCH) is not received.
16. The method of claim 12 ,
wherein a specific condition among the one or more conditions is that the at least two slots satisfy a processing time condition of a PDSCH.
17. The method of claim 16 ,
wherein the processing timing condition is determined according to a minimum time required for the user equipment to receive the PDCCH and to generate valid HARQ-ACK information.
18. The method of claim 17 ,
wherein the HARQ-ACK information is not multiplexed to the PUSCH in a slot when the slot does not satisfy the processing timing condition.
19. The method of claim 11 ,
wherein a number of bits the HARQ-ACK information is based on a value indicated by the DAI field.
20. The method of claim 17 ,
wherein the processing timing condition is determined based on a position of the latest symbol of the PDSCH and a position of the earlier symbol of a start symbol of a PUCCH corresponding to the PDSCH and a start symbol of the PUSCH.