Granted Patent B2

US 12,615,634 · App. 17/634,038 · Granted Apr 28, 2026

Inventors: Haipeng Lei (Haidian District, CN); Alexander Golitschek Edler von Elbwart (Darmstadt, DE)

Assignee: Lenovo (Beijing) Limited

H04W72/1273H04L1/08H04L1/1642H04L1/1685H04L1/1812H04L5/0053H04W72/23

Abstract

Claims (36)

1 . A method performed by a user equipment (UE), the method comprising:

receiving a first downlink control information (DCI) indicating a first group index associated with respective first physical downlink shared channel (PDSCH) transmissions of a first group of PDSCH transmissions;

receiving a second DCI indicating a second group index associated with respective second PDSCH transmissions of a second group of PDSCH transmissions, wherein the second DCI schedules a PDSCH transmission of the second group of PDSCH transmissions, and wherein the second DCI comprises a field with two bits that indicates whether a transmission of first hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback associated with the first group of PDSCH transmissions and second HARQ-ACK feedback associated with the second group of PDSCH transmissions in a HARQ-ACK codebook is requested; and

transmitting the HARQ-ACK codebook.

2 . The method of claim 1 , wherein the HARQ-ACK codebook comprises a first sub-codebook corresponding to the first group of PDSCH transmissions and a second sub-codebook corresponding to the second group of PDSCH transmissions.

3 . The method of claim 2 , further comprising reducing a size of the first sub-codebook by performing HARQ-ACK bundling within the first sub-codebook according to one or more predefined rules based at least in part on at least one of the size of the first sub-codebook being greater than a first maximum size or a size of the HARQ-ACK codebook being greater than a second maximum size.

4 . The method of claim 2 , further comprising reducing or dropping the first sub-codebook by performing HARQ-ACK bundling within the first sub-codebook according to one or more predefined rules based at least in part on at least one of a (re) transmission number of the first sub-codebook being greater than a predefined maximum (re) transmission number.

5 . A user equipment (UE) for wireless communication, comprising:

at least one memory; and

at least one processor coupled with the at least one memory and configured to cause the UE to:

receive a first downlink control information (DCI) indicating a first group index associated with respective first physical downlink shared channel (PDSCH) transmissions of a first group of PDSCH transmissions;

receive a second DCI indicating a second group index associated with respective second PDSCH transmissions of a second group of PDSCH transmissions, wherein the second DCI schedules a PDSCH transmission of the second group of PDSCH transmissions, and wherein the second DCI comprises a field with two bits that indicates whether a transmission of first hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback associated with the first group of PDSCH transmissions and second HARQ-ACK feedback associated with the second group of PDSCH transmissions in a HARQ-ACK codebook is requested; and

transmit the HARQ-ACK codebook.

6 . The UE of claim 5 , wherein the HARQ-ACK codebook comprises HARQ-ACK feedback for all downlink hybrid automatic repeat request (HARQ) processes in response to a size of a first sub-codebook being greater than a predefined maximum size, wherein the first sub-codebook comprises HARQ-ACK information bits for the first group of PDSCH transmissions.

7 . The UE of claim 5 , wherein the HARQ-ACK codebook comprises HARQ-ACK feedback for all downlink hybrid automatic repeat request (HARQ) processes in response to a size of the HARQ-ACK codebook being greater than a predefined maximum size.

8 . The UE of claim 5 , wherein the at least one processor is further configured to cause the UE to reduce a size of the HARQ-ACK codebook by performing HARQ-ACK bundling within the HARQ-ACK codebook according to one or more predefined rules based at least in part on the size of the HARQ-ACK codebook being larger than a predefined maximum size.

9 . The UE of claim 5 , wherein the HARQ-ACK codebook comprises a first sub-codebook and a second sub-codebook, and wherein the first sub-codebook and the second sub-codebook are arranged in the HARQ-ACK codebook according to the first group index and the second group index.

10 . The UE of claim 9 , wherein the first group of PDSCH transmissions comprises PDSCH transmission(s) with corresponding HARQ-ACK feedback that has been transmitted, and wherein the second group of PDSCH transmissions comprises PDSCH transmission(s) with corresponding HARQ-ACK feedback that has not been transmitted.

11 . The UE of claim 5 , wherein the first group index and the second group index are identical.

12 . The UE of claim 11 , wherein the second DCI indicates a downlink assignment index, and wherein a value of the downlink assignment index is accumulated for each PDSCH transmission from the first group of PDSCH transmissions to the second group of PDSCH transmissions.

13 . The UE of claim 5 , wherein the first group index and the second group index are different.

14 . The UE of claim 13 , wherein the second DCI indicates a downlink assignment index, and wherein a value of the downlink assignment index is accumulated for each PDSCH transmission within respective groups of PDSCH transmissions.

15 . The UE of claim 5 , wherein at least one of the first DCI or the second DCI indicates a size of a codebook for the first group of PDSCH transmissions and a size of a codebook for the second group of PDSCH transmissions.

16 . The UE of claim 5 , wherein the second DCI indicates an index of a scheduled group of PDSCH transmissions and an index of an additional group of PDSCH transmissions in response to HARQ-ACK feedback for the additional group of PDSCH transmissions being requested.

17 . The UE of claim 16 , wherein the field requests the transmission of both the first HARQ-ACK feedback and the second HARQ-ACK feedback.

18 . The UE of claim 5 , wherein the HARQ-ACK codebook comprises a first sub-codebook corresponding to the first group of PDSCH transmissions and a second sub-codebook corresponding to the second group of PDSCH transmissions.

19 . A network equipment (NE) for wireless communication, comprising:

at least one memory; and

at least one processor coupled with the at least one memory and configured to cause the NE to:

transmit a first downlink control information (DCI) indicating a first group index associated with respective first physical downlink shared channel (PDSCH) transmissions of a first group of PDSCH transmissions;

transmit a second DCI indicating a second group index associated with respective second PDSCH transmissions of a second group of PDSCH transmissions, wherein the second DCI schedules a PDSCH transmission of the second group of PDSCH transmissions, and wherein the second DCI comprises a field with two bits that indicates whether a transmission of first hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback associated with the first group of PDSCH transmissions and second HARQ-ACK feedback associated with the second group of PDSCH transmissions in a HARQ-ACK codebook is requested; and

receive the HARQ-ACK codebook.

20 . A method performed by a network equipment (NE), the method comprising:

transmit a first downlink control information (DCI) indicating a first group index associated with respective first physical downlink shared channel (PDSCH) transmissions of a first group of PDSCH transmissions;

transmit a second DCI indicating a second group index associated with respective second PDSCH transmissions of a second group of PDSCH transmissions, wherein the second DCI schedules a PDSCH transmission of the second group of PDSCH transmissions, and wherein the second DCI comprises a field with two bits that indicates whether a transmission of first hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback associated with the first group of PDSCH transmissions and second HARQ-ACK feedback associated with the second group of PDSCH transmissions in a HARQ-ACK codebook is requested; and

receive the HARQ-ACK codebook.

Assignments (1)

Continuity (1)

References Cited (83)