# US 12,771,486 B2 · HARQ-ack codebook feedback method and terminal device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,771,486 B2 - Document ID: US12771486B2 - Status: Granted - Kind: B2 - Application number: 18/070,867 - Filed: 2022-11-29 - Published: 2023-04-13 - Granted: 2026-10-20 - Earliest claimed: 2020-05-29 - Assignees: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Applicants: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Inventors: Zuomin Wu - Web page: https://patentgrep.com/patent/US12771486B2 ## CPC - H04L 1/1854: {Scheduling and prioritising arrangements} - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract The embodiments of the present disclosure provide a HARQ-ACK codebook feedback method and a terminal device, capable of supporting HARQ-ACK feedback in an SL-U system. The HARQ-ACK codebook feedback method includes: receiving, by a first terminal device, a first SCI format transmitted by a second terminal device, the first SCI format being used to receive a first PSSCH, and the first SCI format including first indication information, first ID indication information corresponding to the first terminal device, and second ID indication information corresponding to the second terminal device; and generating, by the first terminal device, a first HARQ-ACK codebook based on the first ID indication information and/or the second ID indication information, and the first indication information, the first HARQ-ACK codebook including a first feedback bit containing feedback information corresponding to the first PSSCH. ## Claims ### Claim 1 A Hybrid Automatic Repeat reQuest Acknowledgement (HARQ-ACK) codebook feedback method, comprising: receiving, by a first terminal device, a first Sidelink Control Information (SCI) format transmitted by a second terminal device, the first SCI format being used to receive a first Physical Sidelink Shared Channel (PSSCH), and the first SCI format comprising first indication information, first identification (ID) indication information corresponding to the first terminal device, and second ID indication information corresponding to the second terminal device; and generating, by the first terminal device, a first HARQ-ACK codebook based on the first ID indication information and/or the second ID indication information, and the first indication information, the first HARQ-ACK codebook comprising a first feedback bit containing feedback information corresponding to the first PSSCH; wherein the first indication information indicates a position in sequence of the first SCI format among transmitted first SCI formats, or the first indication information indicates a position in sequence of the first PSSCH among PSSCHs scheduled by the transmitted first SCI formats; wherein the first ID indication information indicates a part of information in an ID of the first terminal device, or the first ID indication information indicates the ID of the first terminal device; and the second ID indication information indicates a part of information in an ID of the second terminal device, or the second ID indication information indicates the ID of the second terminal device. ### Claim 2 (depends on 1) The method according to claim 1, wherein generating, by the first terminal device, the first HARQ-ACK codebook based on the first ID indication information and/or the second ID indication information, and the first indication information comprises one of: generating, by the first terminal device, the first HARQ-ACK codebook based on the first indication information, the same first ID indication information and the same second ID indication information; generating, by the first terminal device, the first HARQ-ACK codebook based on the first indication information and the same first ID indication information; or generating, by the first terminal device, the first HARQ-ACK codebook based on the first indication information and the same second ID indication information. ### Claim 3 (depends on 1) The method according to claim 1, wherein the first SCI format further comprises second indication information indicating a start position of the first HARQ-ACK codebook or indicating retransmission of the first HARQ-ACK codebook. ### Claim 4 (depends on 3) The method according to claim 3, wherein the first SCI format further comprises third indication information, wherein the third indication information indicates a group identity (ID) corresponding to the first HARQ-ACK codebook or indicates a group ID corresponding to the first PSSCH, or the third indication information and the second indication information jointly indicate a start position of the first HARQ-ACK codebook or indicate group retransmission of the first HARQ-ACK codebook. ### Claim 5 (depends on 1) The method according to claim 1, wherein the first SCI format further comprises fourth indication information indicating information on transmission of the first HARQ-ACK codebook. ### Claim 6 (depends on 5) The method according to claim 5, wherein the information on the transmission of the first HARQ-ACK codebook indicated by the fourth indication information comprises at least one of: a first feedback resource, a time domain position of the first feedback resource, or a Transmission Power Control (TPC) command corresponding to the transmission of the first HARQ-ACK codebook, wherein the first feedback resource is used to transmit the first HARQ-ACK codebook or the first feedback bit. ### Claim 7 (depends on 1) The method according to claim 1, wherein the first SCI format further comprises fifth indication information indicating to generate the first HARQ-ACK codebook or indicating not to generate the first HARQ-ACK codebook. ### Claim 8 (depends on 1) The method according to claim 1, wherein the position in sequence of the first feedback bit in the first HARQ-ACK codebook is determined based on the first indication information. ### Claim 9 (depends on 1) The method according to claim 1, wherein when the first ID indication information indicates the part of the information in the ID of the first terminal device, the first PSSCH comprises indication information indicating remaining information in the ID of the first terminal device, or the first ID indication information and indication information included in the first PSSCH jointly indicate the ID of the first terminal device. ### Claim 10 (depends on 1) The method according to claim 1, wherein when the second ID indication information indicates the part of the information in the ID of the second terminal device, the first PSSCH comprises indication information indicating remaining information in the ID of the second terminal device, or the second ID indication information and indication information included in the first PSSCH jointly indicate the ID of the second terminal device. ### Claim 11 A Hybrid Automatic Repeat reQuest Acknowledgement (HARQ-ACK) codebook feedback method, comprising: transmitting, by a second terminal device, a first Sidelink Control Information (SCI) format to a first terminal device, the first SCI format being used to receive a first Physical Sidelink Shared Channel (PSSCH), and the first SCI format comprising first indication information, first identification (ID) indication information corresponding to the first terminal device, and second ID indication information corresponding to the second terminal device; and receiving, by the second terminal device, a first HARQ-ACK codebook transmitted by the first terminal device, the first HARQ-ACK codebook being generated by the first terminal device based on the first ID indication information and/or the second ID indication information, and the first indication information, the first HARQ-ACK codebook comprising a first feedback bit containing feedback information corresponding to the first PSSCH; wherein the first indication information indicates a position in sequence of the first SCI format among transmitted first SCI formats, or the first indication information indicates a position in sequence of the first PSSCH among PSSCHs scheduled by the transmitted first SCI formats; wherein the first ID indication information indicates a part of information in an ID of the first terminal device, or the first ID indication information indicates the ID of the first terminal device; and the second ID indication information indicates a part of information in an ID of the second terminal device, or the second ID indication information indicates the ID of the second terminal device. ### Claim 12 (depends on 11) The method according to claim 11, wherein the first HARQ-ACK codebook is generated by the first terminal device based on the first indication information, the same first ID indication information and the same second ID indication information; the first HARQ-ACK codebook is generated by the first terminal device based on the first indication information and the same first ID indication information; or the first HARQ-ACK codebook is generated by the first terminal device based on the first indication information and the same second ID indication information. ### Claim 13 (depends on 11) The method according to claim 11, wherein the first SCI format further comprises fourth indication information indicating information on transmission of the first HARQ-ACK codebook. ### Claim 14 (depends on 13) The method according to claim 13, wherein the information on the transmission of the first HARQ-ACK codebook indicated by the fourth indication information comprises at least one of: a first feedback resource, a time domain position of the first feedback resource, or a Transmission Power Control (TPC) command corresponding to the transmission of the first HARQ-ACK codebook, wherein the first feedback resource is used to transmit the first HARQ-ACK codebook or the first feedback bit. ### Claim 15 (depends on 11) The method according to claim 11, wherein the first SCI format further comprises fifth indication information indicating to generate the first HARQ-ACK codebook or indicating not to generate the first HARQ-ACK codebook. ### Claim 16 (depends on 11) 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 perform the method according to claim 11. ### Claim 17 (depends on 11) The method according to claim 11, wherein the position in sequence of the first feedback bit in the first HARQ-ACK codebook is determined based on the first indication information. ### Claim 18 (depends on 11) The method according to claim 11, wherein when the first ID indication information indicates the part of the information in the ID of the first terminal device, the first PSSCH comprises indication information indicating remaining information in the ID of the first terminal device, or the first ID indication information and indication information included in the first PSSCH jointly indicate the ID of the first terminal device. ### Claim 19 (depends on 11) The method according to claim 11, wherein when the second ID indication information indicates the part of the information in the ID of the second terminal device, the first PSSCH comprises indication information indicating remaining information in the ID of the second terminal device, or the second ID indication information and indication information included in the first PSSCH jointly indicate the ID of the second terminal device. ### Claim 20 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 a first Sidelink Control Information (SCI) format transmitted by a second terminal device, the first SCI format being used to receive a first Physical Sidelink Shared Channel (PSSCH), and the first SCI format comprising first indication information, first identification (ID) indication information corresponding to the first terminal device, and second ID indication information corresponding to the second terminal device; and generate a first HARQ-ACK codebook based on the first ID indication information and/or the second ID indication information, and the first indication information, the first HARQ-ACK codebook comprising a first feedback bit containing feedback information corresponding to the first PSSCH; wherein the first indication information indicates a position in sequence of the first SCI format among transmitted first SCI formats, or the first indication information indicates a position in sequence of the first PSSCH among PSSCHs scheduled by the transmitted first SCI formats; wherein the first ID indication information indicates a part of information in an ID of the first terminal device, or the first ID indication information indicates the ID of the first terminal device; and the second ID indication information indicates a part of information in an ID of the second terminal device, or the second ID indication information indicates the ID of the second terminal device.