Wireless communication methods, terminal devices, and network device

Inventors: Yi Zhang (Dongguan, CN); Yanan Lin (Dongguan, CN)

Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

H04W72/232 H04L1/1812 H04L1/1861 H04W72/11

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Quick Facts

Patent No.: US 12,713,444
App. No.: 18/506,820
Granted: Aug 18, 2026
Kind: B2

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Abstract

A wireless communication method, a terminal device, and a network device are provided. At least one DCI is received. A target HARQ-ACK codebook is determined or generated. The target HARQ-ACK codebook corresponds to PDSCH reception scheduled by the at least one DCI, SPS PDSCH release indicated by the at least one DCI or Secondary Cell (SCell) dormancy indicated by the at least one DCI. The at least one DCI includes a first DCI format and/or a second DCI format, the first DCI format being used to schedule one PDSCH, and the second DCI format being used to schedule at least two PDSCHs corresponding to at least one PDSCH group. By introducing the second DCI format, the scheduling of the PDSCH is improved, which improves system performance.

Claims (48)

1 . A wireless communication method, comprising:

receiving at least one Downlink Control Information (DCI) transmitted by a network device; and

determining or generating a target Hybrid Automatic Repeat reQuest Acknowledgement (HARQ-ACK) codebook, the target HARQ-ACK codebook corresponding to Physical Downlink Shared Channel (PDSCH) reception scheduled by the at least one DCI, Semi-Persistent Scheduling (SPS) PDSCH release indicated by the at least one DCI or Secondary Cell (SCell) dormancy indicated by the at least one DCI,

wherein the at least one DCI comprises a first DCI format and/or a second DCI format, the first DCI format being used to schedule one PDSCH, and/or the second DCI format being used to schedule at least two PDSCHs corresponding to at least one PDSCH group;

wherein said determining or generating the target HARQ-ACK codebook comprises:

determining or generating first HARQ-ACK information or a first HARQ-ACK sub-codebook, the first HARQ-ACK information or the first HARQ-ACK sub-codebook comprising HARQ-ACK bits corresponding to PDSCHs in a first PDSCH group; the target HARQ-ACK codebook comprising the first HARQ-ACK sub-codebook or the first HARQ-ACK information, and the at least one PDSCH group comprising the first PDSCH group;

wherein said determining or generating the first HARQ-ACK information or the first HARQ-ACK sub-codebook comprises:

determining or generating a 2-bit HARQ-ACK for the PDSCHs in the first PDSCH group, the SPS PDSCH release, or the SCell dormancy when a terminal is not configured with a first parameter and is configured with a second parameter as 2; or determining or generating a 1-bit HARQ-ACK for the PDSCHs in the first PDSCH group, the SPS PDSCH release, or the SCell dormancy when the terminal is not configured with the first parameter and the second parameter,

wherein the first parameter is used to enable HARQ-ACK spatial bundling, and the second parameter is used to indicate a maximum number of code words that is schedulable by one DCI.

2 . The method according to claim 1 , wherein said determining or generating the target HARQ-ACK codebook comprises:

determining or generating second HARQ-ACK information or a second HARQ-ACK sub-codebook, the second HARQ-ACK information or the second HARQ-ACK sub-codebook comprising HARQ-ACK bits corresponding to PDSCHs in a second PDSCH group; the target HARQ-ACK codebook comprising the second HARQ-ACK sub-codebook or the second HARQ-ACK information, the at least one PDSCH group comprising the second PDSCH group, and the first PDSCH group being different from the second PDSCH group.

3 . The method according to claim 2 , wherein when the second DCI format schedules two PDSCHs, the second PDSCH group comprises: a second PDSCH scheduled by the second DCI format, wherein the second PDSCH is a PDSCH on a serving cell with a larger serving cell index among the two PDSCHs; or

wherein when the second DCI format schedules more than two PDSCHs, the second PDSCH group comprises: Y PDSCHs among PDSCHs scheduled by the second DCI format, wherein the Y PDSCHs are PDSCHs on Y serving cells with larger serving cell indexes among the at least two PDSCHs, wherein Y is a positive integer.

4 . The method according to claim 1 , wherein the first HARQ-ACK information or the first HARQ-ACK sub-codebook further comprises a HARQ-ACK bit corresponding to the SPS PDSCH release or the SCell dormancy.

5 . The method according to claim 1 , wherein when the second DCI format schedules two PDSCHs, the first PDSCH group comprises at least one of: a PDSCH scheduled by the first DCI format or a first PDSCH scheduled by the second DCI format, wherein the first PDSCH is a PDSCH on a serving cell with a smaller serving cell index among the two PDSCHs; or

wherein when the second DCI format schedules more than two PDSCHs, the first PDSCH group comprises at least one of: a PDSCH scheduled by the first DCI format or X PDSCHs among the PDSCHs scheduled by the second DCI format, wherein the X PDSCHs are PDSCHs on X serving cells with smaller serving cell indexes among the at least two PDSCHs, wherein X is a positive integer.

6 . A terminal device, comprising a processor and a memory, wherein the memory has a computer program stored thereon, and the processor is configured to invoke and execute the computer program stored in the memory to:

receive at least one Downlink Control Information (DCI) transmitted by a network device; and

determine or generate a target Hybrid Automatic Repeat reQuest Acknowledgement (HARQ-ACK) codebook, the target HARQ-ACK codebook corresponding to Physical Downlink Shared Channel (PDSCH) reception scheduled by the at least one DCI, Semi-Persistent Scheduling (SPS) PDSCH release indicated by the at least one DCI or Secondary Cell (SCell) dormancy indicated by the at least one DCI,

wherein to determine or generate the target HARQ-ACK codebook, the processor is configured to invoke and execute the computer program stored in the memory to:

determine or generate first HARQ-ACK information or a first HARQ-ACK sub-codebook, the first HARQ-ACK information or the first HARQ-ACK sub-codebook comprising HARQ-ACK bits corresponding to PDSCHs in a first PDSCH group; the target HARQ-ACK codebook comprising the first HARQ-ACK sub-codebook or the first HARQ-ACK information, and the at least one PDSCH group comprising the first PDSCH group;

wherein to determine or generate the first HARQ-ACK information or the first HARQ-ACK sub-codebook, the processor is configured to invoke and execute the computer program stored in the memory to:

determine or generate a 2-bit HARQ-ACK for the PDSCHs in the first PDSCH group, the SPS PDSCH release, or the SCell dormancy when a terminal is not configured with a first parameter and is configured with a second parameter as 2; or determine or generate a 1-bit HARQ-ACK for the PDSCHs in the first PDSCH group, the SPS PDSCH release, or the SCell dormancy when the terminal is not configured with the first parameter and the second parameter,

wherein the first parameter is used to enable HARQ-ACK spatial bundling, and the second parameter is used to indicate a maximum number of code words that is schedulable by one DCI.

7 . The terminal device according to claim 6 , wherein said determining or generating the target HARQ-ACK codebook comprises:

8 . The terminal device according to claim 7 , wherein when the second DCI format schedules two PDSCHs, the second PDSCH group comprises: a second PDSCH scheduled by the second DCI format, wherein the second PDSCH is a PDSCH on a serving cell with a larger serving cell index among the two PDSCHs; or

9 . The terminal device according to claim 6 , wherein the first HARQ-ACK information or the first HARQ-ACK sub-codebook further comprises a HARQ-ACK bit corresponding to the SPS PDSCH release or the SCell dormancy.

10 . The terminal device according to claim 6 , wherein when the second DCI format schedules two PDSCHs, the first PDSCH group comprises at least one of: a PDSCH scheduled by the first DCI format or a first PDSCH scheduled by the second DCI format, wherein the first PDSCH is a PDSCH on a serving cell with a smaller serving cell index among the two PDSCHs; or

11 . A network device, comprising a processor and a memory, wherein the memory has a computer program stored thereon, and the processor is configured to invoke and execute the computer program stored in the memory to:

transmit at least one Downlink Control Information (DCI) to a terminal device; and

wherein to determine or generate the target HARQ-ACK codebook, the processor is configured to invoke and execute the computer program stored in the memory to:

wherein to determine or generate the first HARQ-ACK information or the first HARQ-ACK sub-codebook, the processor is configured to invoke and execute the computer program stored in the memory to:

wherein the first parameter is used to enable HARQ-ACK spatial bundling, and the second parameter is used to indicate a maximum number of code words that is schedulable by one DCI.

12 . The network device according to claim 11 , wherein said determining or generating the target HARQ-ACK codebook comprises:

13 . The network device according to claim 12 , wherein when the second DCI format schedules two PDSCHs, the second PDSCH group comprises: a second PDSCH scheduled by the second DCI format, wherein the second PDSCH is a PDSCH on a serving cell with a larger serving cell index among the two PDSCHs; or

14 . The network device according to claim 11 , wherein the first HARQ-ACK information or the first HARQ-ACK sub-codebook further comprises a HARQ-ACK bit corresponding to the SPS PDSCH release or the SCell dormancy.

15 . The network device according to claim 11 , wherein when the second DCI format schedules two PDSCHs, the first PDSCH group comprises at least one of: a PDSCH scheduled by the first DCI format or a first PDSCH scheduled by the second DCI format, wherein the first PDSCH is a PDSCH on a serving cell with a smaller serving cell index among the two PDSCHs; or