Granted Patent B2

US 12,289,271 · App. 17/713,836 · Granted Apr 29, 2025

Inventors: Duckhyun Bae (Seoul, KR); Suckchel Yang (Seoul, KR); Seonwook Kim (Seoul, KR)

Assignee: LG Electronics Inc.

H04L5/0055H04L1/1812H04W72/0446

Abstract

Claims (36)

1. A method of transmitting hybrid automatic repeat request (HARD) acknowledgement (ACK) (HARQ-ACK) information by a user equipment in a wireless communication system, the method comprising:

performing physical downlink shared channel (PDSCH) reception in a plurality of cells including a primary cell and including a secondary cell configured for physical uplink control channel (PUCCH) cell switching;

determining a HARQ-ACK feedback timing value K for the PDSCH reception among a set of HARQ-ACK feedback timing values configured for the primary cell;

determining a slot n+K on the primary cell based on a last slot n overlapping with the PDSCH reception among slots of the primary cell and on the HARQ-ACK feedback timing value K; and

transmitting the HARQ-ACK information for the PDSCH reception in a slot m on the secondary cell, based on using the secondary cell for transmission of the HARQ-ACK information for the PDSCH reception based on the PUCCH cell switching,

wherein the slot m is a first slot among slots of the secondary cell overlapping with the slot n+K.

2. The method of claim 1 , wherein the HARQ-ACK feedback timing value K is determined from among the HARQ-ACK feedback timing values of the set based on a field in a message scheduling the PDSCH reception.

3. The method of claim 1 , wherein the PUCCH cell switching includes switching a cell for PUCCH transmissions related to the plurality of cells between the primary cell and the secondary cell according to a predetermined rule.

4. The method of claim 1 , further comprising:

receiving a higher layer signal including a PUCCH cell switching pattern,

wherein the PUCCH cell switching is performed according to the PUCCH cell switching pattern.

5. A user equipment for transmitting hybrid automatic repeat request (HARD) acknowledgement (ACK) (HARQ-ACK) information in a wireless communication system, the user equipment comprising:

at least one transceiver;

at least one processor; and

at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations,

wherein the operations comprise:

performing physical downlink shared channel (PDSCH) reception in a plurality of cells including a primary cell and including a secondary cell configured for physical uplink control channel (PUCCH) cell switching;

determining a HARQ-ACK feedback timing value K for the PDSCH reception among a set of HARQ-ACK feedback timing values configured for the primary cell;

determining a slot n+K on the primary cell based on a last slot n overlapping with the PDSCH reception among slots of the primary cell and on the HARQ-ACK feedback timing value K; and

transmitting the HARQ-ACK information for the PDSCH reception in a slot m on the secondary cell, based on using the secondary cell for transmission of the HARQ-ACK information for the PDSCH reception based on the PUCCH cell switching, and

wherein the slot m is a first slot among slots of the secondary cell overlapping with the slot n+K.

6. The user equipment of claim 5 , wherein the HARQ-ACK feedback timing value K is determined from among the HARQ-ACK feedback timing values of the set based on a field in a message scheduling the PDSCH reception.

7. The user equipment of claim 5 , wherein the PUCCH cell switching includes switching a cell for PUCCH transmissions related to the plurality of cells between the primary cell and the secondary cell according to a predetermined rule.

8. The user equipment of claim 5 , wherein the operations further comprise:

receiving a higher layer signal including a PUCCH cell switching pattern, and wherein the PUCCH cell switching is performed according to the PUCCH cell switching pattern.

9. A method of receiving hybrid automatic repeat request (HARD) acknowledgement (ACK) (HARQ-ACK) information from a user equipment by a base station in a wireless communication system, the method comprising:

performing physical downlink shared channel (PDSCH) transmission in a plurality of cells including a primary cell for the user equipment and including a secondary cell configured for the user equipment for physical uplink control channel (PUCCH) cell switching;

determining a HARQ-ACK feedback timing value K for the PDSCH transmission among a set of HARQ-ACK feedback timing values configured for the primary cell;

determining a slot n+K on the primary cell based on a last slot n overlapping with the PDSCH transmission among slots of the primary cell and on the HARQ-ACK feedback timing value K; and

receiving the HARQ-ACK information for the PDSCH transmission in a slot m on the secondary cell, based on using the secondary cell for reception of the HARQ-ACK information for the PDSCH transmission based on the PUCCH cell switching,

wherein the slot m is a first slot among slots of the secondary cell overlapping with the slot n+K.

10. The method of claim 9 , wherein the HARQ-ACK feedback timing value K is determined from among the HARQ-ACK feedback timing values of the set based on a field in a message scheduling the PDSCH reception.

11. The method of claim 9 , wherein the PUCCH cell switching includes switching a cell for PUCCH transmissions related to the plurality of cells between the primary cell and the secondary cell according to a predetermined rule.

12. The method of claim 9 , further comprising:

receiving a higher layer signal including a PUCCH cell switching pattern,

wherein the PUCCH cell switching is performed according to the PUCCH cell switching pattern.

Assignments (1)

Priority Claims (4)

Continuity (1)

References Cited (13)