Method for generating HARQ-ACK codebook in wireless communication system and device using same
View Patent ↗Disclosed is a base station in a wireless communication system. Each base station in wireless communication comprises: a communication module; and a processor. The processor generates a hybrid automatic repeat request (HARQ)-ACK codebook comprising one or more bits and indicating whether or not reception of a channel or signal is successful, and transmits the HARQ-ACK codebook to the base station.
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 a plurality of physical downlink control channels (PDCCHs);
transmit a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook on a physical uplink control channel (PUCCH) resource associated with a last PDCCH among the plurality of the PDCCHs,
wherein the last PDCCH is defined as a PDCCH satisfying:
(i) PDCCH received in a cell with a highest index among one or more PDCCHs, which are received from a latest start time among the plurality of the PDCCHs, and
(ii) based on at least two PDCCHs satisfying the (i), one of the at least two PDCCHs received in a control resource set (CORESET) with a highest index.
2. The user equipment of claim 1 , wherein the HARQ-ACK codebook is a dynamic HARQ-ACK codebook, and each of the plurality of PDCCHs includes a counter downlink assignment index (c-DAI).
3. The user equipment of claim 2 , wherein
c-DAIs in the plurality of PDCCHs are ordered based on a symbol and a cell index in which each of the plurality of PDCCHs is received.
4. The user equipment of claim 3 , wherein
the c-DAIs are ordered further based on an index of a CORESET in which each of the plurality of PDCCHs is received when the c-DAIs have a same order based on the symbol and the cell index in which each of the plurality of PDCCHs is received.
5. The user equipment of claim 1 , wherein
each of the plurality of PDCCHs schedules a respective physical downlink shared channel (PDSCH) for which HARQ-ACK information is required to be included in the HARQ-ACK codebook, and the plurality of PDCCHs includes the at least two PDCCHs satisfying the (i).
6. A method used for in a wireless communication system, the method comprising:
receiving a plurality of physical downlink control channels (PDCCHs);
transmitting a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook on a physical uplink control channel (PUCCH) resource associated with a last PDCCH among the plurality of the PDCCHs,
wherein the last PDCCH is defined as a PDCCH satisfying:
(i) PDCCH received in a cell with a highest index among one or more PDCCHs, which are received from a latest start time among the plurality of the PDCCHs, and
(ii) based on at least two PDCCHs satisfying the (i), one of the at least two PDCCHs received in a control resource set (CORESET) with a highest index.
7. The method of claim 6 , wherein the HARQ-ACK codebook is a dynamic HARQ-ACK codebook, and each of the plurality of PDCCHs includes a counter downlink assignment index (c-DAI).
8. The method of claim 7 , wherein c-DAIs in the plurality of PDCCHs are ordered based on a symbol and a cell index in which each of the plurality of PDCCHs is received.
9. The method of claim 8 , wherein the c-DAIs are ordered further based on an index of a CORESET in which each of the plurality of PDCCHs is received when the c-DAIs have a same order based on the symbol and the cell index in which each of the plurality of PDCCHs is received.
10. The method of claim 6 , wherein each of the plurality of PDCCHs schedules a respective physical downlink shared channel (PDSCH) for which HARQ-ACK information is required to be included in the HARQ-ACK codebook, and the plurality of PDCCHs includes the at least two PDCCHs satisfying the (i).
11. A base station in a wireless communication system, the base station comprising:
a communication module; and
a processor configured to control the communication module,
wherein the processor is configured to:
transmit a plurality of physical downlink control channels (PDCCHs);
receive a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook on a physical uplink control channel (PUCCH) resource associated with a last PDCCH among the plurality of the PDCCHs,
wherein the last PDCCH is defined as a PDCCH satisfying:
(i) PDCCH transmitted in a cell with a highest index among one or more PDCCHs, which are transmitted from a latest start time among the plurality of the PDCCHs, and
(ii) based on at least two PDCCHs satisfying the (i), one of the at least two PDCCHs transmitted in a control resource set (CORESET) with a highest index.
12. The base station of claim 11 , wherein the HARQ-ACK codebook is a dynamic HARQ-ACK codebook, and each of the plurality of PDCCHs includes a counter downlink assignment index (c-DAI).
13. The base station of claim 12 , wherein c-DAIs in the plurality of PDCCHs are ordered based on a symbol and a cell index in which each of the plurality of PDCCHs is transmitted.
14. The base station of claim 13 , wherein the c-DAIs are ordered further based on an index of a CORESET in which each of the plurality of PDCCHs is transmitted when the c-DAIs have a same order based on the symbol and the cell index in which each of the plurality of PDCCHs is transmitted.
15. The base station of claim 11 , wherein each of the plurality of PDCCHs schedules a respective physical downlink shared channel (PDSCH) for which HARQ-ACK information is required to be included in the HARQ-ACK codebook, and the plurality of PDCCHs includes the at least two PDCCHs satisfying the (i).
16. A method used for in a wireless communication system, the method comprising:
transmitting a plurality of physical downlink control channels (PDCCHs);
receiving a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook on a physical uplink control channel (PUCCH) resource associated with a last PDCCH among the plurality of the PDCCHs,
wherein the last PDCCH is defined as a PDCCH satisfying:
(i) PDCCH transmitted in a cell with a highest index among one or more PDCCHs, which are transmitted from a latest start time among the plurality of the PDCCHs, and
(ii) based on at least two PDCCHs satisfying the (i), one of the at least two PDCCHs transmitted in a control resource set (CORESET) with a highest index.
17. The method of claim 16 , wherein the HARQ-ACK codebook is a dynamic HARQ-ACK codebook, and each of the plurality of PDCCHs includes a counter downlink assignment index (c-DAI).
18. The method of claim 17 , wherein c-DAIs in the plurality of PDCCHs are ordered based on a symbol and a cell index in which each of the plurality of PDCCHs is transmitted.
19. The method of claim 18 , wherein the c-DAIs are ordered further based on an index of a CORESET in which each of the plurality of PDCCHs is transmitted when the c-DAIs have a same order based on the symbol and the cell index in which each of the plurality of PDCCHs is transmitted.
20. The method of claim 16 , wherein each of the plurality of PDCCHs schedules a respective physical downlink shared channel (PDSCH) for HARQ-ACK information is required to be included in the HARQ-ACK codebook, and the plurality of PDCCHs includes the at least two PDCCHs satisfying the (i).