Granted Patent B2

US 12,218,768 · App. 17/711,527 · Granted Feb 4, 2025

Inventors: Seonwook Kim (Seoul, KR); Suckchel Yang (Seoul, KR); Seunghwan Choi (Seoul, KR)

Assignee: LG Electronics Inc.

H04L1/1887H04L1/1893H04W72/23

Abstract

Claims (48)

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 and comprising:

receiving configuration information for configuring HARQ-ACK bundling for one or more serving cells among a plurality of serving cells configured for the terminal;

receiving downlink control information (DCI) for scheduling one or more physical downlink shared channels (PDSCH) on each of the 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 a HARQ-ACK codebook corresponding to the HARQ-ACK information includes a first HARQ-ACK sub-codebook and a second HARQ-ACK sub-codebook,

wherein the first HARQ-ACK sub-codebook is determined for one or more first serving cells for which number of groups of the HARQ-ACK bundling is set to 1, and

wherein the second HARQ-ACK sub-codebook is determined for one or more second serving cells for which number of groups of the HARQ-ACK bundling is set greater than 1.

2. The method of claim 1 , further comprising:

receiving another 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 PDSCHs on the one or more first serving cells for which the multi-PDSCH scheduling is not configured or number of groups of the HARQ-ACK bundling is set to 1, among the plurality of serving cells, and

wherein the second HARQ-ACK sub-codebook is determined for one or more second serving cells for which number of groups of the HARQ-ACK bundling is set greater than 1 or the HARQ-ACK 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-ACK 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 number of the first HARQ-ACK information bits corresponds to a maximum value between products of number of groups of the HARQ-ACK bundling and a value of X across all of the one or more second serving cells, and

wherein for a cell for which PDSCH reception carrying two transport blocks is configured and spatial bundling for HARQ-ACK information is not configured, the X value is 2, otherwise the X value is 1.

5. The method of claim 1 ,

wherein, based on the HARQ-ACK 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 number of the second HARQ-ACK information bits corresponds to a maximum value between products of number of PDSCHs schedulable by a single DCI and a value of X across all of the one or more second serving cells, and

wherein for a cell for which PDSCH reception carrying two transport blocks is configured and spatial bundling for HARQ-ACK information is not configured, the X value is 2, otherwise 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, based on the HARQ-ACK bundling being configured for a specific serving cell, HARQ-ACK information is generated for each of one or more groups for a plurality of PDSCHs scheduled on the specific serving cell.

9. The method of claim 8 , wherein HARQ-ACK information for each group is generated by performing a logical AND operation on HARQ-ACK information bits for a plurality of PDSCHs included in each group of the one or more groups.

10. The method of claim 8 , wherein, based on only PDSCHs overlapped with an uplink symbol being included in a specific group of the HARQ-ACK bundling, the HARQ-ACK information for the specific group is generated as a negative ACK (NACK).

11. The method of claim 8 , wherein, based on one or more PDSCHs overlapped with an uplink symbol being included in a specific group of the HARQ-ACK bundling, HARQ-ACK information for the one or more PDSCHs is regarded as an ACK or a NACK (negative ACK) to generate HARQ-ACK information for the specific group.

12. 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;

at least one processor for controlling the at least one transceiver; and

at least one memory storing instructions that, based on being executed by the at least one processor, perform operations comprising:

receiving configuration information for configuring HARQ bundling for one or more serving cells among a plurality of serving cells configured for the terminal;

receiving downlink control information (DCI) for scheduling one or more physical downlink shared channels (PDSCH) on each of the 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 a HARQ-ACK codebook corresponding to the HARQ-ACK information includes a first HARQ-ACK sub-codebook and a second HARQ-ACK sub-codebook,

wherein the first HARQ-ACK sub-codebook is determined for one or more first serving cells for which number of groups of the HARQ-ACK bundling is set to 1, and

wherein the second HARQ-ACK sub-codebook is determined for one or more second serving cells for which number of groups of the HARQ-ACK bundling is set greater than 1.

13. 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 and comprising:

transmitting configuration information for configuring HARQ-ACK bundling for one or more serving cells among a plurality of serving cells configured for a terminal;

transmitting downlink control information (DCI) for scheduling one or more physical downlink shared channels (PDSCH) on each of the 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 a HARQ-ACK codebook corresponding to the HARQ-ACK information includes a first HARQ-ACK sub-codebook and a second HARQ-ACK sub-codebook,

wherein the first HARQ-ACK sub-codebook is determined for one or more first serving cells for which number of groups of the HARQ-ACK bundling is set to 1, and

wherein the second HARQ-ACK sub-codebook is determined for one or more second serving cells for which number of groups of the HARQ-ACK bundling is set greater than 1.

Assignments (2)

Priority Claims (5)

Continuity (3)

References Cited (26)