Granted Patent B2

US 12,457,063 · App. 17/783,542 · Granted Oct 28, 2025

Inventors: Zhennian Sun (Chaoyang District, CN); Xiaodong Yu (Haidian District, CN); Haipeng Lei (Haidian District, CN); Haiming Wang (Xicheng District, CN)

Assignee: LENOVO (BEIJING) LIMITED

H04L1/1861H04W72/23

Abstract

Claims (53)

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

transmitting, in response to a code block group (CBG)-based transmission being enabled, the CBG-based transmission on a sidelink (SL) to a second UE, wherein the CBG-based transmission comprises one or more CBGs;

receiving, from the second UE, hybrid automatic repeat request-acknowledge (HARQ-ACK) feedback corresponding to the one or more CBGs;

selecting, from one or more values corresponding to one or more pre-defined ratios, an indicator to request a resource for a CBG-based retransmission; and

transmitting, in response to the HARQ-ACK feedback, the indicator on a physical uplink control channel (PUCCH) resource.

2 . The method of claim 1 , further comprising receiving, from a network entity (NE), signaling that indicates the CBG-based transmission is enabled, wherein the signaling comprises radio resource control (RRC) signaling.

3 . The method of claim 1 , further comprising receiving SL grant information comprising one or more resources allocated for the one or more CBGs, wherein the SL grant information indicates that the CBG-based transmission is enabled.

4 . A first 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 first UE to:

transmit, in response to a code block group (CBG)-based transmission being enabled, a CBG-based transmission on a sidelink (SL) to a second UE, wherein the CBG-based transmission comprises one or more CBGs;

receive, from the second UE, hybrid automatic repeat request-acknowledge (HARQ-ACK) feedback corresponding to the one or more CBGs;

select, from one or more values corresponding to one or more pre-defined ratios, an indicator to request a resource for a CBG-based retransmission; and

transmit, in response to the HARQ-ACK feedback, the indicator on a physical uplink control channel (PUCCH) resource.

5 . 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, in response to a code block group (CBG)-based transmission comprising one or more CBGs being enabled, a sidelink (SL) grant information, wherein the SL grant information indicates one or more resources allocated for the CBG-based transmission on a SL between a first user equipment (UE) and a second UE, and wherein the SL grant information indicates a physical uplink control channel (PUCCH) resource; and

receive an indicator on the PUCCH resource, wherein the indicator requests a resource for a CBG-based retransmission, and wherein the indicator is selected from one or more values corresponding to one or more pre-defined ratios.

6 . The first UE of claim 4 , wherein the at least one processor is further configured to cause the first UE to determine that the CBG-based transmission is enabled.

7 . The first UE of claim 6 , wherein the at least one processor is further configured to cause the first UE to determine that the CBG-based transmission is enabled in response to at least one of:

a payload size of a transport block (TB) being greater than a first threshold; or

a likelihood that a pre-emption procedure happens on the SL being greater than a second threshold.

8 . The first UE of claim 6 , wherein the at least one processor is further configured to cause the first UE to transmit, on the PUCCH resource, an indication that the CBG-based transmission is enabled.

9 . The first UE of claim 8 , wherein the indication comprises a bit, and wherein a value of 0 or 1 of the bit represents that the CBG-based transmission is enabled and another of the value of 0 or 1 of the bit represents that the CBG-based transmission is disabled.

10 . The first UE of claim 9 , wherein the at least one processor is further configured to cause the first UE to:

transmit, in response to the CBG-based transmission being enabled, the HARQ-ACK feedback using a remaining one or more bits on the PUCCH resource; and

transmit, in response to the CBG-based transmission being disabled, HARQ-ACK feedback corresponding to one or more transport blocks (TBs) using an additional bit on the PUCCH resource.

11 . The first UE of claim 4 , wherein the CBG-based transmission being enabled is implicitly indicated by at least one of:

one or more resources being within a resource pool that enables the CBG-based transmission, wherein the one or more resources are allocated for the one or more CBGs; or

a total number of sub-channels of the one or more resources in a frequency domain being greater than a threshold.

12 . The first UE of claim 4 , wherein a quantity of bits corresponding to the indicator is related to a maximum number of CBGs in a transport block (TB).

13 . The first UE of claim 4 , wherein the indicator comprises at least one of:

the HARQ-ACK feedback corresponding to the one or more CBGs; or

a total number of CBGs actually transmitted on the SL.

14 . The first UE of claim 4 , wherein the indicator comprises at least one of:

one of a total number of incorrectly decoded CBGs or a total number of correctly decoded CBGs; or

a total number of CBGs actually transmitted on the SL.

15 . The first UE of claim 4 , wherein the indicator comprises at least one of:

a ratio between a total number of incorrectly decoded CBGs and a total number of CBGs actually transmitted on the SL; or

a ratio between a total number of correctly decoded CBGs and the total number of CBGs actually transmitted on the SL.

16 . The first UE of claim 4 , wherein respective CBGs of the one or more CBGs comprise one or more code blocks (CBs), and wherein the indicator comprises at least one of:

a ratio between a total number of incorrectly decoded CBs and a total number of CBs actually transmitted on the SL; or

a ratio between a total number of correctly decoded CBs and the total number of CBs actually transmitted on the SL.

17 . The first UE of claim 4 , wherein respective values of the one or more values are represented by one or more bits within a pre-defined table.

18 . The first UE of claim 4 , wherein the at least one processor is further configured to cause the first UE to:

compare the one or more pre-defined ratios with an actual ratio between a total number of CBGs to be retransmitted and a total number of CBGs actually transmitted on the SL;

select, from the one or more pre-defined ratios, a minimum ratio that is greater than the actual ratio; and

use a value within the one or more values that corresponds to the minimum ratio as the indicator.

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

transmit, in response to a code block group (CBG)-based transmission comprising one or more CBGs being enabled, a sidelink (SL) grant information, wherein the SL grant information indicates one or more resources allocated for the CBG-based transmission on a SL between a first user equipment (UE) and a second UE, and wherein the SL grant information indicates a physical uplink control channel (PUCCH) resource; and

receive an indicator on the PUCCH resource, wherein the indicator requests a resource for a CBG-based retransmission, and wherein the indicator is selected from one or more values corresponding to one or more pre-defined ratios.

20 . The NE of claim 5 , wherein the at least one processor is further configured to cause the NE to receive, on the PUCCH resource, an indication that the CBG-based transmission is enabled.

Assignments (1)

Continuity (1)

References Cited (9)