Granted Patent B2

US 12,526,809 · App. 17/402,913 · Granted Jan 13, 2026

Inventors: Ang Yang (Guangdong, CN); Xiaodong Shen (Guangdong, CN)

Assignee: VIVO MOBILE COMMUNICATION CO., LTD.

H04W72/23H04L1/1812H04L1/1896H04L5/0053H04L5/0055H04L5/0094H04W72/0446H04W72/21H04W72/232

Abstract

Claims (59)

1 . A method for hybrid automatic repeat request (HARQ) feedback, comprising:

obtaining, by a terminal, downlink control information (DCI) in a group common physical downlink control channel (GC-PDCCH); and

feeding back, by the terminal, HARQ acknowledgement information according to the DCI;

wherein the DCI comprises at least one of the following information:

a quantity of time-domain transmission units between feedback of the HARQ acknowledgement information and the DCI;

process identifier information of a physical downlink shared channel (PDSCH) transmission process; or

process identifier group information of the PDSCH transmission process;

wherein the step of feeding back HARQ acknowledgement information according to the DCI comprises: in a case that the DCI indicates feeding back the HARQ acknowledgement information, feeding back all unreported HARQ acknowledgement information, or feeding back HARQ acknowledgement information for all PDSCH transmission processes;

wherein the step of obtaining DCI in a group common physical downlink control channel (GC-PDCCH) comprises:

receiving, by using radio resource control (RRC) signalling, a radio network temporary identifier (RNTI) used for triggering feedback of the HARQ acknowledgement information; and

searching for corresponding DCI in the GC-PDCCH based on the RNTI;

wherein the DCI further comprises indication information of whether to trigger feeding back the HARQ acknowledgement information;

wherein the indication information is an n-bit bitmap, and n is a quantity of terminals corresponding to the GC-PUCCH;

wherein the searching for corresponding DCI in the GC-PDCCH based on the RNTI, comprises:

determining a DCI size based on n, and using the RNTI to search for DCI corresponding to the DCI size in the GC-PDCCH.

2 . The method for HARQ feedback according to claim 1 , wherein the DCI further comprises:

a physical uplink control channel (PUCCH) resource information for feeding back the HARQ acknowledgement information.

3 . The method for HARQ feedback according to claim 2 , after the step of obtaining DCI in a GC-PDCCH, further comprising:

in a case that a candidate PUCCH indicated by the PUCCH resource information in the DCI is in a special state with no configured resource, determining not to feed back the HARQ acknowledgement information.

4 . The method for HARQ feedback according to claim 2 , wherein the PUCCH resource information comprises at least one of time information, frequency information, code domain information, and spatial information that are for feeding back the HARQ acknowledgement information.

5 . The method for HARQ feedback according to claim 1 , wherein the step of feeding back HARQ acknowledgement information according to the DCI further comprises:

feeding back, based on a PDSCH transmission process indicated by the DCI, HARQ acknowledgement information corresponding to the PDSCH transmission process.

6 . A terminal, comprising a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, following steps are implemented:

obtaining downlink control information (DCI) in a group common physical downlink control channel (GC-PDCCH); and

feeding back HARQ acknowledgement information according to the DCI;

wherein the DCI comprises at least one of the following information:

a quantity of time-domain transmission units between feedback of the HARQ acknowledgement information and the DCI;

process identifier information of a physical downlink shared channel (PDSCH) transmission process; or

process identifier group information of the PDSCH transmission process;

wherein the step of feeding back HARQ acknowledgement information according to the DCI comprises: in a case that the DCI indicates feeding back the HARQ acknowledgement information, feeding back all unreported HARQ acknowledgement information, or feeding back HARQ acknowledgement information for all PDSCH transmission processes;

wherein when obtaining DCI in a group common physical downlink control channel (GC-PDCCH), the processor is used to perform:

receiving, by using radio resource control (RRC) signalling, a radio network temporary identifier (RNTI) used for triggering feedback of the HARQ acknowledgement information; and

searching for corresponding DCI in the GC-PDCCH based on the RNTI;

wherein the DCI further comprises indication information of whether to trigger feeding back the HARQ acknowledgement information;

wherein the indication information is an n-bit bitmap, and n is a quantity of terminals corresponding to the GC-PUCCH;

wherein when searching for corresponding DCI in the GC-PDCCH based on the RNTI, the processor is used to perform:

determining a DCI size based on n, and using the RNTI to search for DCI corresponding to the DCI size in the GC-PDCCH.

7 . The terminal according to claim 6 , wherein the DCI further comprises:

a physical uplink control channel (PUCCH) resource information for feeding back the HARQ acknowledgement information.

8 . The terminal according to claim 7 , wherein when the computer program is executed by the processor, after the step of obtaining DCI in a GC-PDCCH, following step is further implemented:

in a case that a candidate PUCCH indicated by the PUCCH resource information in the DCI is in a special state with no configured resource, determining not to feed back the HARQ acknowledgement information.

9 . The terminal according to claim 7 , wherein the PUCCH resource information comprises at least one of time information, frequency information, code domain information, and spatial information that are for feeding back the HARQ acknowledgement information.

10 . The terminal according to claim 6 , wherein when feeding back HARQ acknowledgement information according to the DCI, the processor is used to perform:

feeding back, based on a PDSCH transmission process indicated by the DCI, HARQ acknowledgement information corresponding to the PDSCH transmission process.

11 . A network device, wherein the network device comprises a processor, a memory, and a computer program stored in the memory and capable of running on the processor, and when the computer program is executed by the processor, following step is implemented:

transmitting downlink control information (DCI) to a terminal through a group common physical downlink control channel (GC-PDCCH), wherein the DCI is used to trigger the terminal to feed back HARQ acknowledgement information;

wherein the DCI comprises at least one of the following information:

a quantity of time-domain transmission units between feedback of the HARQ acknowledgement information and the DCI;

process identifier information of a physical downlink shared channel (PDSCH) transmission process; or

process identifier group information of the PDSCH transmission process;

wherein the step of feeding back HARQ acknowledgement information according to the DCI comprises: in a case that the DCI indicates feeding back the HARQ acknowledgement information, feeding back all unreported HARQ acknowledgement information, or feeding back HARQ acknowledgement information for all PDSCH transmission processes;

wherein when the computer program is executed by the processor, before the step of transmitting DCI to a terminal through a GC-PDCCH, following step is further implemented:

transmitting, to the terminal by using radio resource control (RRC) signalling, a radio network temporary identifier (RNTI) for triggering feedback of the HARQ acknowledgement information, wherein the RNTI is associated with the DCI;

wherein the DCI further comprises indication information of whether to trigger feeding back the HARQ acknowledgement information;

wherein the indication information is an n-bit bitmap, and n is a quantity of terminals corresponding to the GC-PUCCH and used for determining a DCI size, and the RNTI is further used for searching for DCI corresponding to the DCI size in the GC-PDCCH.

12 . The network device according to claim 11 , wherein candidate physical uplink control channel (PUCCH) resource information carried in the RRC signaling supports a special state with no configured resource.

13 . The network device according to claim 11 , wherein the DCI further comprises:

physical uplink control channel (PUCCH) resource information for feeding back the HARQ acknowledgement information.

14 . The network device according to claim 13 , wherein the PUCCH resource information comprises at least one of time information, frequency information, code domain information, and spatial information that are for feeding back the HARQ acknowledgement information.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (16)