# US 12,003,329 B2 · Method for transmitting hybrid automatic repeat request feedback, and communication device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,003,329 B2 - Document ID: US12003329B2 - Status: Granted - Kind: B2 - Application number: 17/775,558 - Filed: 2019-11-11 - Published: 2022-12-15 - Granted: 2024-06-04 - Earliest claimed: 2019-11-11 - Assignees: Beijing Xiaomi Mobile Software Co., Ltd. - Applicants: Beijing Xiaomi Mobile Software Co., Ltd. - Inventors: Xiandong Dong - Web page: https://patentgrep.com/patent/US12003329B2 ## CPC - H04L 1/1614: {using bitmaps} - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 1/1621: {Group acknowledgement, i.e. the acknowledgement message defining a range of identifiers, e.g. of sequence numbers} - H04L 1/1642: {Formats specially adapted for sequence numbers} - H04L 1/1845: {Combining techniques, e.g. code combining} - H04W 84/12: WLAN [Wireless Local Area Networks] - 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 for transmitting a hybrid automatic repeat request feedback, and a communication device are provided. The method includes: generating a reception feedback frame including a reception feedback of a block in a data frame based on a reception status of the block of the data frame transmitted in blocks; and sending the reception feedback frame. ## Claims ### Claim 1 A method for transmitting a hybrid automatic repeat request (HARQ) feedback, performed by a first communication end, comprising: generating a reception feedback frame comprising a reception feedback of a block in a data frame based on a reception status of the block of the data frame transmitted in blocks; and sending the reception feedback frame; said generating a reception feedback frame comprising a reception feedback of a block in a data frame based on a reception status of the block of the data frame transmitted in blocks comprising: generating the reception feedback frame comprising a reception feedback of at least one first-class data block of a media access control service data unit (MSDU) based on a reception status of the at least one first-class data block, wherein the data frame is the MSDU divided into multiple first-class data blocks; generating the reception feedback frame comprising a reception feedback of at least one second-class data block in at least one aggregation media access control service data unit (A-MSDU) sub-frame of an A-MSDU based on a reception status of the at least one second-class data block, wherein the data frame is the A-MSDU comprising a plurality of A-MSDU sub-frames each divided into multiple second-class data blocks. ### Claim 2 (depends on 1) The method of claim 1, said generating a reception feedback frame comprising a reception feedback of a block in a data frame based on a reception status of the block of the data frame transmitted in blocks comprising: generating the reception feedback frame comprising a reception feedback of at least one A-MSDU of the A-MSDU sub-frame based on a reception status of the at least one A-MSDU sub-frame, wherein the data frame is the A-MSDU comprising a plurality of A-MSDU sub-frames. ### Claim 3 (depends on 1) The method of claim 1, wherein, the first-class data block is obtained by dividing the MAC service data unit of the first type based on a first predetermined block length; and the second-class data block is obtained by dividing the sub-frame of the MAC service data unit of the second type based on a second predetermined block length. ### Claim 4 (depends on 1) The method of claim 1, wherein, the reception feedback frame comprising the reception feedback of the second-class data block further comprises a first identification; wherein the first identification is configured to indicate a sub-frame number of a sub-frame comprising the second-class data block. ### Claim 5 (depends on 1) The method of claim 1, wherein, the reception feedback frame further comprises a second identification; wherein the second identification is configured to indicate a sequence number of the data frame. ### Claim 6 (depends on 1) The method of claim 1, wherein, the reception feedback frame further comprises a third identification; wherein the third identification is configured to indicate a traffic identifier (TID) of the data frame. ### Claim 7 (depends on 1) The method of claim 1, said generating a reception feedback frame comprising a reception feedback of a block in a data frame comprising: generating the reception feedback frame comprising a reception feedback of a block in each data frame, wherein the reception feedback frame is configured to feedback reception feedbacks of blocks in a predetermined number of data frames. ### Claim 8 A method for transmitting a hybrid automatic repeat request (HARQ) feedback, performed by a second communication end, comprising: receiving a reception feedback frame sent by a first communication end; and determining a reception status of a block based on a reception feedback of the block in a data frame comprised in the reception feedback frame, wherein the data frame is transmitted in blocks; said determining a reception status of a block based on a reception feedback of the block in a data frame comprised in the reception feedback frame comprising: determining a reception status of at least one first-class data block of a media access control service data unit (MSDU) divided into multiple first-class data blocks based on a reception feedback of the at least one first-class data block comprised in the reception feedback frame; determining a reception status of at least one second-class data block in at least one A-MSDU sub-frame of an aggregation media access control service data unit (A-MSDU) comprising a plurality of A-MSDU sub-frames each divided into multiple second-class data blocks based on a reception feedback of the at least one second-class data block comprised in the reception feedback frame. ### Claim 9 (depends on 8) The method of claim 8, said determining a reception status of a block based on a reception feedback of the block in a data frame comprised in the reception feedback frame comprising determining a reception status of at least one A-MSDU sub-frame of the A-MSDU comprising a plurality of A-MSDU sub-frames based on a reception feedback of the at least one A-MSDU sub-frame comprised in the reception feedback frame. ### Claim 10 (depends on 8) The method claim 8, wherein, the first-class data block is obtained by dividing the MAC service data unit of the first type based on a first predetermined block length; and the second-class data block is obtained by dividing the sub-frame of the MAC service data unit of the second type based on a second predetermined block length. ### Claim 11 (depends on 8) The method of claim 8, further comprising: determining a sub-frame number of a sub-frame comprising the second-class data block based on a first identification comprised in the reception feedback frame. ### Claim 12 (depends on 8) The method of claim 8, further comprising: determining a sequence number of the data frame comprising the block based on a second identification comprised in the reception feedback frame. ### Claim 13 (depends on 8) The method of claim 8, further comprising: determining a traffic identifier (TID) of the data frame comprising the block based on a third identification comprised in the reception feedback frame. ### Claim 14 (depends on 8) The method of claim 8, said determining a reception status of a block based on a reception feedback of the block in a data frame comprised in the reception feedback frame comprising: determining a reception status of the block in each data frame based on a reception feedback of a block in each data frame comprised in the reception feedback frame, wherein the reception feedback frame comprises reception feedbacks of blocks in a predetermined number of data frames. ### Claim 15 (depends on 8) The method of claim 8, further comprising: re-sending the block not successfully received. ### Claim 16 A communication device, comprising: a processor, a memory storing an executable program executed by the processor; wherein when the processor executes the executable program, the processor performs steps of a method for transmitting a hybrid automatic repeat request (HARQ) feedback, comprising: generating a reception feedback frame comprising a reception feedback of a block in a data frame based on a reception status of the block of the data frame transmitted in blocks; and sending the reception feedback frame; said generating a reception feedback frame comprising a reception feedback of a block in a data frame based on a reception status of the block of the data frame transmitted in blocks comprising: generating the reception feedback frame comprising a reception feedback of at least one first-class data block of a media access control service data unit (MSDU) based on a reception status of the at least one first-class data block, wherein the data frame is the MSDU divided into multiple first-class data blocks; generating the reception feedback frame comprising a reception feedback of at least one second-class data block in at least one aggregation media access control service data unit (A-MSDU) sub-frame of an A-MSDU based on a reception status of the at least one second-class data block, wherein the data frame is the A-MSDU comprising a plurality of A-MSDU sub-frames each divided into multiple second-class data blocks. ### Claim 17 (depends on 16) The device of claim 16, said generating a reception feedback frame comprising a reception feedback of a block in a data frame based on a reception status of the block of the data frame transmitted in blocks comprising at least one of the following: generating the reception feedback frame comprising a reception feedback of at least one A-MSDU of the A-MSDU a sub-frame based on a reception status of the at least one A-MSDU sub-frame, wherein the data frame is the A-MSDU comprising a plurality of A-MSDU sub-frames. ### Claim 18 (depends on 16) The device of claim 16, wherein, the first-class data block is obtained by dividing the MAC service data unit of the first type based on a first predetermined block length; and the second-class data block is obtained by dividing the sub-frame of the MAC service data unit of the second type based on a second predetermined block length. ### Claim 19 (depends on 16) The device of claim 16, wherein, the reception feedback frame comprising the reception feedback of the second-class data block further comprises a first identification; wherein the first identification is configured to indicate a sub-frame number of a sub-frame comprising the second-class data block. ### Claim 20 (depends on 8) A communication device, comprising: a processor, a memory storing an executable program executed by the processor; wherein when the processor executes the executable program, the processor performs steps of the method for transmitting a hybrid automatic repeat request (HARQ) feedback according to claim 8.