Wireless communication method, terminal device and network device

Inventors: Yi Zhang (Dongguan, CN); Jing Xu (Dongguan, CN); Bin Liang (Dongguan, CN)

Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

H04L1/1861 H04W72/1273 H04W72/232

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Quick Facts

Patent No.: US 12706703
App. No.: 18/241,361
Granted: Aug 11, 2026
Kind: B2

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Abstract

Provided in the embodiments of the present application are a wireless communication method, a terminal device and a network device. The method includes: receiving at least one piece of downlink control information (DCI) sent by a network device; and determining or generating a target hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook, where the target HARQ-ACK codebook corresponds to the reception of a physical downlink shared channel (PDSCH) scheduled by the at least one DCI, the release of a semi-persistent scheduling (SPS) PDSCH indicated by the at least one DCI, or the dormancy of a secondary cell (SCell) indicated by the at least one DCI; and the at least one piece of DCI includes a first DCI format and/or a second DCI format, the first DCI format being used for scheduling one PDSCH, and the second DCI format being used for scheduling at least two PDSCHs.

Claims (37)

1 . A method for wireless communication, comprising:

receiving at least one downlink control information (DCI) from a network device; and

determining or generating a target hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook, wherein the target HARQ-ACK codebook corresponds to a physical downlink shared channel (PDSCH) reception scheduled by the at least one DCI, a semi-persistent scheduling (SPS) PDSCH release indicated by the at least one DCI, or a secondary cell (SCell) dormancy indicated by the at least one DCI,

wherein the target HARQ-ACK codebook comprises a first HARQ-ACK sub-codebook and a second HARQ-ACK sub-codebook, the first HARQ-ACK sub-codebook is suitable for scenarios where a code block group (CBG)-based PDSCH reception is not supported, and the second HARQ-ACK sub-codebook is suitable for the scenarios where the CBG-based PDSCH reception is not supported;

wherein the at least one DCI comprises a first DCI format for scheduling one PDSCH and a second DCI format for scheduling two PDSCHs; wherein the first HARQ-ACK sub-codebook comprises at least one of: a HARQ-ACK bit corresponding to a PDSCH reception scheduled by the first DCI format, a HARQ-ACK bit corresponding to an SPS PDSCH release indicated by the first DCI format, or a HARQ-ACK bit corresponding to an SCell dormancy indicated by the first DCI format, and the second HARQ-ACK sub-codebook comprises a HARQ-ACK bit corresponding to a PDSCH reception scheduled by the second DCI format; and

wherein in a case that the first HARQ-ACK sub-codebook is suitable for the scenarios where the CBG-based PDSCH reception is not supported, and the second HARQ-ACK sub-codebook is suitable for the scenarios where the CBG-based PDSCH reception is not supported, determining or generating the target HARQ-ACK codebook comprises:

in response to a terminal device being not configured with a first parameter and being not configured with a second parameter, determining or generating a 1-bit HARQ-ACK for the PDSCH reception scheduled by the first DCI format, the SPS PDSCH release indicated by the first DCI format or the SCell dormancy indicated by the first DCI format; in response to the terminal device being not configured with the first parameter and being configured with the second parameter having a value of 2, determining or generating a 2-bit HARQ-ACK for the PDSCH reception scheduled by the first DCI format, the SPS PDSCH release indicated by the first DCI format or the SCell dormancy indicated by the first DCI formats; and

in response to the terminal device being not configured with the first parameter and being not configured with the second parameter, determining or generating a 2-bit HARQ-ACK for the PDSCH reception scheduled by the second DCI format; in response to the terminal device being not configured with the first parameter and being configured with the second parameter having a value of 2, determining or generating a 4-bit HARQ-ACK for the PDSCH reception scheduled by the second DCI format;

wherein the first parameter is used for enabling an HARQ-ACK spatial bundling, and the second parameter is used for indicating a maximum number of code words scheduled by a DCI.

2 . The method of claim 1 , wherein each of the at least one DCI comprises a counter-downlink assignment index (C-DAI), and a value of the C-DAI indicates an accumulative number of DCIs for scheduling the PDSCH reception, indicating the SPS PDSCH release or indicating the SCell dormancy up to a current serving cell and a current PDCCH monitoring occasion.

3 . The method of claim 1 , wherein each of the at least one DCI comprises a total-downlink assignment index (T-DAI), and a value of the T-DAI indicates an accumulative number of DCIs for scheduling the PDSCH reception, indicating the SPS PDSCH release or indicating the SCell dormancy up to a current PDCCH monitoring occasion on all serving cells.

4 . A terminal device, comprising a processor, a transceiver and a memory for storing computer-executable instructions, wherein the processor is configured to invoke and run the computer-executable instructions stored in the memory, to perform operations of:

receiving, through the transceiver, at least one downlink control information (DCI) from a network device; and

wherein the target HARQ-ACK codebook comprises a first HARQ-ACK sub-codebook and a second HARQ-ACK sub-codebook, the first HARQ-ACK sub-codebook is suitable for scenarios where a code block group (CBG-based) PDSCH reception is not supported, and the second HARQ-ACK sub-codebook is suitable for the scenarios where the CBG-based PDSCH reception is not supported;

in response to the terminal device being not configured with a first parameter and being not configured with a second parameter, determining or generating a 1-bit HARQ-ACK for the PDSCH reception scheduled by the first DCI format, the SPS PDSCH release indicated by the first DCI format or the SCell dormancy indicated by the first DCI format; in response to the terminal device being not configured with the first parameter and being configured with the second parameter having a value of 2, determining or generating a 2-bit HARQ-ACK for the PDSCH reception scheduled by the first DCI format, the SPS PDSCH release indicated by the first DCI format or the SCell dormancy indicated by the first DCI formats; and

wherein the first parameter is used for enabling an HARQ-ACK spatial bundling, and the second parameter is used for indicating a maximum number of code words scheduled by a DCI.

5 . The terminal device of claim 4 , wherein determining or generating the target HARQ-ACK codebook comprises:

appending the second HARQ-ACK sub-codebook behind the first HARQ-ACK sub-codebook to form the target HARQ-ACK codebook, or, appending the first HARQ-ACK sub-codebook behind the second HARQ-ACK sub-codebook to form the target HARQ-ACK codebook.

6 . The terminal device of claim 4 , wherein the processor is configured to invoke and run the computer-executable instructions stored in the memory, to further perform an operation of:

sending, through the transceiver, the target HARQ-ACK codebook to the network device.

7 . A network device, comprising a processor, a transceiver and a memory for storing computer-executable instructions, wherein the processor is configured to invoke and run the computer-executable instructions stored in the memory, to perform operations of:

sending, through the transceiver, at least one downlink control information (DCI) to a terminal device; and

wherein the first parameter is used for enabling an HARQ-ACK spatial bundling, and the second parameter is used for indicating a maximum number of code words scheduled by a DCI.

8 . The network device of claim 7 , wherein each of the at least one DCI comprises a counter-downlink assignment index (C-DAI), and a value of the C-DAI indicates an accumulative number of DCIs for scheduling the PDSCH reception, indicating the SPS PDSCH release or indicating the SCell dormancy up to a current serving cell and a current PDCCH monitoring occasion.

9 . The network device of claim 7 , wherein each of the at least one DCI comprises a total-downlink assignment index (T-DAI), and a value of the T-DAI indicates an accumulative number of DCIs for scheduling the PDSCH reception, indicating the SPS PDSCH release or indicating the SCell dormancy up to a current PDCCH monitoring occasion on all serving cells.

10 . The network device of claim 7 , wherein determining or generating the target HARQ-ACK codebook comprises: