Granted Patent B2

US 12,581,496 · App. 18/138,745 · Granted Mar 17, 2026

Inventors: Kyungjun Choi (Gyeonggi-do, KR); Minseok Noh (Seoul, KR); Jinsam Kwak (Gyeonggi-do, KR)

Assignee: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

H04W72/23H04L1/1812H04W72/21

Abstract

Claims (29)

1 . A user equipment configured to operate in a 3rd generation partnership project new radio (3GPP NR)-based 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 physical downlink shared channel (PDSCH) on one of a plurality of downlink (DL) bandwidth parts (BWPs) of a cell,

based on the reception of the PDSCH, determine a size of a semi-static hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook,

determine a physical uplink control channel (PUCCH) resource for the semi-static HARQ-ACK codebook, wherein the PUCCH resource belongs to a PUCCH resource set associated with the size of the semi-static HARQ-ACK codebook,

wherein, when a first physical downlink control channel (PDCCH) is received within N 3 symbols prior to the PUCCH resource, the user equipment maintains the size of the semi-static HARQ-ACK codebook, without expecting that the first PDCCH indicates a DL BWP change of the cell,

wherein, when a second PDCCH is received earlier than the N 3 symbols prior to the PUCCH resource, the size of the semi-static HARQ-ACK codebook varies depending on whether the second PDCCH indicates a DL BWP change of the cell or does not, and

wherein N 3 is a positive number.

2 . The user equipment of claim 1 , wherein, if the second PDCCH indicates the DL BWP change of the cell, the size of the semi-static HARQ-ACK codebook is determined by not including HARQ-ACK information at corresponding to one or more slots before the DL BWP change, within slots associated with the semi-static HARQ-ACK codebook.

3 . The user equipment of claim 2 , wherein the PDSCH is received before the DL BWP change of the cell.

4 . The user equipment of claim 1 , wherein the N 3 symbols are symbols prior to a starting symbol of the PUCCH resource.

5 . The user equipment of claim 1 , wherein the N 3 is determined based on a user equipment capability and a subcarrier spacing.

6 . The user equipment of claim 1 , wherein the semi-static HARQ-ACK codebook is transmitted by using the PUCCH resource.

7 . The user equipment of claim 1 , wherein the PUCCH resource set is selected from a plurality of PUCCH resource sets based on the size of the semi-static HARQ-ACK codebook.

8 . A method performed by a user equipment in a 3rd generation partnership project new radio (3GPP NR)-based wireless communication system, the method comprising:

receiving a physical downlink shared channel (PDSCH) on one of a plurality of downlink (DL) bandwidth parts (BWPs) of a cell;

based on the reception of the PDSCH, determining a size of a semi-static hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook;

determining a physical uplink control channel (PUCCH) resource for the semi-static HARQ-ACK codebook, wherein the PUCCH resource belongs to a PUCCH resource set associated with the size of the semi-static HARQ-ACK codebook,

wherein, when a first physical downlink control channel (PDCCH) is received within N 3 symbols prior to the PUCCH resource, the user equipment maintains the size of the semi-static HARQ-ACK codebook, without expecting that the first PDCCH indicates a DL BWP change of the cell,

wherein, when a second PDCCH is received earlier than the N 3 symbols prior to the PUCCH resource, the size of the semi-static HARQ-ACK codebook varies depending on whether the second PDCCH indicates a DL BWP change of the cell or does not, and

wherein N 3 is a positive number.

9 . The method of claim 8 , wherein, if the second PDCCH indicates the DL BWP change of the cell, the size of the semi-static HARQ-ACK codebook is determined by not including HARQ-ACK information corresponding to one or more slots before the DL BWP change, within slots associated with the semi-static HARQ-ACK codebook.

10 . The method of claim 9 , wherein the PDSCH is received before the DL BWP change of the cell.

11 . The method of claim 8 , wherein the N 3 symbols are symbols prior to a starting symbol of the PUCCH resource.

12 . The method of claim 8 , wherein the N 3 is determined based on a user equipment capability and a subcarrier spacing.

13 . The method of claim 8 , wherein the semi-static HARQ-ACK codebook is transmitted by using the PUCCH resource.

14 . The method of claim 8 , wherein the PUCCH resource set is selected from a plurality of PUCCH resource sets based on the size of the semi-static HARQ-ACK codebook.

Priority Claims (5)

Continuity (2)

References Cited (131)