# US 2019/0379490 A1 · Hybrid Automatic Repeat Request Feedback Method and Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0379490 A1 - Document ID: US20190379490A1 - Status: Published application - Kind: A1 - Application number: 16/487,076 - Filed: 2017-02-28 - Published: 2019-12-12 - Earliest claimed: 2017-02-28 - Assignees: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Applicants: Guangdong OPPO Mobile Telecommunications Corp., Ltd. - Inventors: Jianhua Liu - Web page: https://patentgrep.com/patent/US20190379490A1 ## CPC - H04L 1/1685: {the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal} - H04L 1/1819: {with retransmission of additional or different redundancy} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04W 76/11: Allocation or use of connection identifiers - H04W 80/02: Data link layer protocols - H04W 88/02: Terminal devices - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A method and device for hybrid automatic repeat request feedback are provided. The method includes: a terminal device sends data to be transmitted to a network device; if the terminal device determines that feedback information for the data to be transmitted is not received in a first target time period, the terminal device sends feedback request information to the network device, the feedback request information is used for requesting the network device to send feedback information for the data to be transmitted, a start time point of the first target time period is a time point that the terminal device finishes sending the data to be transmitted, and a time length of the first target time period is a first time length. ## Claims ### Claim 1 A method for hybrid automatic repeat request (HARQ) feedback, comprising: sending, by a terminal device, data to be transmitted to a network device; and sending, by the terminal device, feedback request information to the network device when the terminal device determines that feedback information for the data to be transmitted is not received in a first target time period, wherein the feedback request information is used for requesting the network device to send feedback information for the data to be transmitted, a start time point of the first target time period is a time point that the terminal device finishes sending the data to be transmitted, and a time length of the first target time period is a first time length. ### Claim 2 (depends on 1) The method of claim 1, wherein the feedback request information comprises an identification (ID) of the terminal device and an ID of a target HARQ process; wherein sending, by the terminal device, the data to be transmitted to the network device comprises: sending, by the terminal device, the data to be transmitted to the network device by using the target HARQ process. ### Claim 3 (depends on 2) The method of claim 2, wherein sending, by the terminal device, the feedback request information to the network device comprises: sending, by the terminal device, the feedback request information to the network device on a dedicated resource, the dedicated resource being a resource allocated by the network device to the terminal device for sending the feedback request information; or, sending, by the terminal device, the feedback request information to the network device on a preset common resource. ### Claim 4 (depends on 2) The method of claim 2, further comprising: receiving, by the terminal device, feedback information sent by the network device for the data to be transmitted. ### Claim 5 (depends on 4) The method of claim 4, wherein the feedback information is acknowledgement (ACK) information, and the ACK information comprises the ID of the target HARQ process; wherein receiving, by the terminal device, the feedback information sent by the network device for the data to be transmitted comprises: receiving, by the terminal device, a medium access control protocol data unit (MAC PDU) sent by the network device, and the MAC PDU comprises the ACK information. ### Claim 6 (depends on 4) The method of claim 4, wherein the feedback information is ACK information, and the ACK information comprises the ID of the target HARQ process and the ID of the terminal device; wherein receiving, by the terminal device, the feedback information sent by the network device for the data to be transmitted comprises: receiving, by the terminal device, system information sent by the network device, and the system information comprises the ACK information. ### Claim 7 (depends on 4) The method of claim 4, wherein the feedback information is negative acknowledgement (NACK) information, and the NACK information comprises information related to retransmission of the data to be transmitted; wherein receiving, by the terminal device, the feedback information sent by the network device for the data to be transmitted comprises: receiving, by the terminal device, a physical downlink control channel (PDCCH) sent by the network device, and the PDCCH comprises the NACK information. ### Claim 8 (depends on 1) The method of claim 1, further comprising: determining, by the terminal device, the first time length according to round-trip time (RTT) of an HARQ process in an existing protocol version; or, determining, by the terminal device, the first time length according to a time length corresponding to feedback information sent by the network device and received before sending the data to be transmitted to the network device. ### Claim at position 9 9-15. (canceled) ### Claim 16 A terminal device, comprising: a processor and a transceiver; wherein the transceiver is configured to send data to be transmitted to a network device; the processor is configured to determine whether the transceiver receives feedback information for the data to be transmitted in a first target time period, wherein a start time point of the first target time period is a time point that the transceiver finishes sending the data to be transmitted, and a time length of the first target time period is a first time length; and the transceiver is further configured to send feedback request information to the network device when the processor determines that the transceiver does not receive feedback information for the data to be transmitted in the first target time period, wherein the feedback request information is used for requesting the network device to send feedback information for the data to be transmitted. ### Claim 17 (depends on 16) The terminal device of claim 16, wherein the feedback request information comprises an identification (ID) of the terminal device and an ID of a target HARQ process; and wherein the transceiver is configured to: send the data to be transmitted to the network device by using the target HARQ process. ### Claim 18 (depends on 16) The terminal device of claim 16, wherein the transceiver is specifically configured to: send the feedback request information to the network device on a dedicated resource, the dedicated resource being a resource allocated by the network device to the terminal device for sending the feedback request information; or, send the feedback request information to the network device on a preset common resource. ### Claim 19 (depends on 16) The terminal device of claim 16, wherein the transceiver is further configured to: receive feedback information sent by the network device for the data to be transmitted. ### Claim 20 (depends on 19) The terminal device of claim 19, wherein the feedback information is ACK information, and the ACK information comprises an identification (ID) of a target HARQ process; wherein the transceiver is configured to: receive a medium access control protocol data unit (MAC PDU) sent by the network device, the MAC PDU comprising the ACK information. ### Claim 21 (depends on 19) The terminal device of claim 19, wherein the feedback information is ACK information, and the ACK information comprises an identification (ID) of a target HARQ process and the ID of the terminal device; wherein the transceiver is configured to: receive system information sent by the network device, the system information comprising the ACK information. ### Claim 22 (depends on 19) The terminal device of claim 19, wherein the feedback information is NACK information, and the NACK information comprises information related to retransmission of the data to be transmitted; wherein the transceiver is configured to: receive a PDCCH sent by the network device, the PDCCH comprising the NACK information. ### Claim 23 (depends on 16) The terminal device of claim 16, wherein the processor is further configured to: determine the first time length according to round-trip time (RTT) of an HARQ process in an existing protocol version; or, determine the first time length according to a time length corresponding to feedback information sent by the network device and received by the transceiver before sending the data to be transmitted to the network devices. ### Claim at position 18 24-30. (canceled) ### Claim 31 A non-transitory computer readable medium, storing a computer program which, when being executed by a computer, causes the computer to: send data to be transmitted to a network device through a terminal device; and send feedback request information to the network device when the terminal device determines that feedback information for the data to be transmitted is not received in a first target time period, wherein the feedback request information is used for requesting the network device to send feedback information for the data to be transmitted, a start time point of the first target time period is a time point that the terminal device finishes sending the data to be transmitted, and a time length of the first target time period is a first time length. ### Claim 32 (depends on 3) The method of claim 3, further comprising: receiving, by the terminal device, feedback information sent by the network device for the data to be transmitted. ### Claim 33 (depends on 32) The method of claim 32, wherein the feedback information is acknowledgement (ACK) information, and the ACK information comprises the ID of the target HARQ process; and wherein receiving, by the terminal device, the feedback information sent by the network device for the data to be transmitted comprises: receiving, by the terminal device, a medium access control protocol data unit (MAC PDU) sent by the network device, and the MAC PDU comprises the ACK information. ### Claim 34 (depends on 32) The method of claim 32, wherein the feedback information is ACK information, and the ACK information comprises the ID of the target HARQ process and the ID of the terminal device; and wherein receiving, by the terminal device, the feedback information sent by the network device for the data to be transmitted comprises: receiving, by the terminal device, system information sent by the network device, and the system information comprises the ACK information.