# US 12,184,431 B2 · Method and device for transmitting hybrid automatic repeat request acknowledgement information > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,184,431 B2 - Document ID: US12184431B2 - Status: Granted - Kind: B2 - Application number: 17/771,615 - Filed: 2019-10-28 - Published: 2022-12-22 - Granted: 2024-12-31 - Earliest claimed: 2019-10-28 - Assignees: Beijing Xiaomi Mobile Software Co., Ltd. - Applicants: Beijing Xiaomi Mobile Software Co., Ltd. - Inventors: Mingju Li - Web page: https://patentgrep.com/patent/US12184431B2 ## CPC - H04L 1/1614: {using bitmaps} - H04L 1/1864: {ARQ related signaling (H04L1/1607 takes precedence)} - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - 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 A method for transmitting HARQ-ACK information is disclosed. A base station receives a feedback signal transmitted by a terminal when performing a HARQ feedback for a PDSCH; parses TB-level feedback information from the feedback signal according to a number of bits of the TB-level feedback information in the feedback signal; obtains a number of bits of CBG-level feedback information in the feedback signal according to the TB-level feedback information; and parses the CBG-level feedback information from the feedback signal according to the number of bits of the CBG-level feedback information. ## Claims ### Claim 1 A method for transmitting hybrid automatic repeat request acknowledgement information, performed by a base station, comprising: receiving a feedback signal sent by a terminal when performing hybrid automatic repeat request (HARQ) feedback for a physical downlink shared channel (PDSCH); parsing transport block-level (TB-level) feedback information from the feedback signal according to a number of bits of the TB-level feedback information in the feedback signal, wherein the TB-level feedback information comprises a reception result of the terminal for each TB contained in the PDSCH; obtaining a number of bits of code block group-level (CBG-level) feedback information in the feedback signal according to the TB-level feedback information; parsing the CBG-level feedback information from the feedback signal according to the number of bits of the CBG-level feedback information, wherein the CBG-level feedback information comprises a reception result of the terminal for each CBG in a TB that fails to be received on the PDSCH; wherein, the TB-level feedback information and the CBG-level feedback information are sent by the terminal after independent channel coding. ### Claim 2 (depends on 1) The method according to claim 1, wherein before parsing the TB-level feedback information from the feedback signal according to the number of bits of the TB-level feedback information in the feedback signal, the method further comprises: obtaining a number of TBs contained in the PDSCH; obtaining the number of bits of the TB-level feedback information according to the number of TBs contained in the PDSCH. ### Claim 3 (depends on 1) The method according to claim 1, wherein obtaining the number of bits of the CBG-level feedback information in the feedback signal according to the TB-level feedback information comprises: obtaining, according to the TB-level feedback information, a number of TBs that the terminal fails to receive on the PDSCH; obtaining the number of bits of the CBG-level feedback information according to the number of TBs that the terminal fails to receive on the PDSCH. ### Claim 4 (depends on 3) The method according to claim 3, wherein the TB-level feedback information is a first sequence of n bits, n is a number of TBs contained in the PDSCH, and respective bits in the first sequence are in a one-to-one correspondence with respective TBs in the PDSCH; a bit value in the first sequence corresponding to the TB that the terminal fails to receive on the PDSCH is 0; obtaining, according to the TB-level feedback information, the number of TBs that the terminal fails to receive on the PDSCH comprises: obtaining a number m of bits with a value of 0 in the first sequence as the number of TBs that the terminal fails to receive on the PDSCH. ### Claim 5 (depends on 4) The method according to claim 4, wherein obtaining the number of bits of the CBG-level feedback information according to the number of TBs that the terminal fails to receive on the PDSCH comprises: obtaining the number of bits of the CBG-level feedback information by multiplying the number m of bits with a value of 0 in the first sequence by a number k of CBGs contained in each TB. ### Claim 6 (depends on 5) The method according to claim 5, wherein parsing the CBG-level feedback information from the feedback signal according to the number of bits of the CBG-level feedback information comprises: obtaining a second sequence containing m*k bits by parsing from the feedback signal; obtaining the second sequence as the CBG-level feedback information. ### Claim 7 (depends on 6) The method according to claim 6, further comprising: dividing the second sequence into m subsequences according to an order of bits in the sequence from front to back, wherein the m subsequences are in one-to-one correspondence with the TBs that the terminal fails to receive on the PDSCH. ### Claim 8 (depends on 1) The method according to claim 1, wherein parsing the CBG-level feedback information from the feedback signal according to the number of bits of the CBG-level feedback information comprises: when the number of bits of the CBG-level feedback information is not 0, parsing the CBG-level feedback information from the feedback signal according to the number of bits of the CBG-level feedback information. ### Claim 9 (depends on 1) The method according to claim 1, wherein receiving the feedback signal sent by the terminal when performing HARQ feedback for the PDSCH comprises: determining HARQ feedback resource corresponding to the PDSCH; receiving the feedback signal on the HARQ feedback resource. ### Claim 10 A method for transmitting hybrid automatic repeat request acknowledgement information, performed by a terminal, comprising: receiving downlink data on a physical downlink shared channel (PDSCH); generating transport block-level (TB-level) feedback information according to a reception result on the PDSCH, wherein the TB-level feedback information comprises a reception result of the terminal for each TB contained in the PDSCH; wherein the TB-level feedback information is used to obtain a number of TBs that the terminal fails to receive on the PDSCH; generating code block group-level (CBG-level) feedback information according to the reception result on the PDSCH, wherein the CBG-level feedback information comprises a reception result of the terminal for each CBG in a TB that fails to be received on the PDSCH, and a number of bits of the CBG-level feedback information corresponds to the number of TBs that the terminal fails to receive on the PDSCH; independently channel coding the TB-level feedback information and the CBG-level feedback information; reporting independently channel-coded TB-level feedback information and CBG-level feedback information to a base station. ### Claim 11 (depends on 10) The method according to claim 10, wherein the TB-level feedback information is a first sequence of n bits, n is a number of TBs contained in the PDSCH, and respective bits in the first sequence are in one-to-one correspondence with respective TBs in the PDSCH. ### Claim 12 (depends on 11) The method according to claim 11, wherein a bit value in the first sequence corresponding to the TB that the terminal fails to receive on the PDSCH is 0; the CBG-level feedback information is a second sequence of m*k bits; m is a number of bits with a value of 0 in the first sequence, and k is a number of CBGs contained in each TB; generating the CBG-level feedback information according to the reception result on the PDSCH comprises: generating, according to the reception result on the PDSCH, a k-bit subsequence corresponding to each of the TBs that the terminal fails to receive on the PDSCH; obtaining the second sequence by connecting end-to-end the k-bit subsequences corresponding to the TBs that the terminal fails to receive on the PDSCH. ### Claim 13 (depends on 10) The method according to claim 10, wherein reporting the independently channel-coded TB-level feedback information and CBG-level feedback information to the base station comprises: determining HARQ feedback resource corresponding to the PDSCH; sending the independently channel-coded TB-level feedback information and CBG-level feedback information on the HARQ feedback resource. ### Claim 14 (depends on 1) A base station, configured to implement the method for transmitting hybrid automatic repeat request acknowledgement information according to claim 1, comprising: a processor and a memory configured to store instructions executable by the processor, wherein the processor is configured to implement the method for transmitting hybrid automatic repeat request acknowledgement information according to claim 1 by executing the instructions stored in the memory. ### Claim 15 A terminal, comprising: a processor and a memory configured to store instructions executable by the processor, wherein the processor is configured to: receive downlink data on a physical downlink shared channel (PDSCH); generate transport block-level (TB-level) feedback information according to a reception result on the PDSCH, wherein the TB-level feedback information comprises a reception result of the terminal for each TB contained in the PDSCH; wherein the TB-level feedback information is used to obtain a number of TBs that the terminal fails to receive on the PDSCH; generate code block group-level (CBG-level) feedback information according to the reception result on the PDSCH, wherein the CBG-level feedback information comprises a reception result of the terminal for each CBG in a TB that fails to be received on the PDSCH, and a number of bits of the CBG-level feedback information corresponds to the number of TBs that the terminal fails to receive on the PDSCH; independently channel code the TB-level feedback information and the CBG-level feedback information; report independently channel-coded TB-level feedback information and CBG-level feedback information to a base station. ### Claim 16 (depends on 15) The terminal according to claim 15, wherein the TB-level feedback information is a first sequence of n bits, n is a number of TBs contained in the PDSCH, and respective bits in the first sequence are in one-to-one correspondence with respective TBs in the PDSCH. ### Claim 17 (depends on 16) The terminal according to claim 16, wherein a bit value in the first sequence corresponding to the TB that the terminal fails to receive on the PDSCH is 0; the CBG-level feedback information is a second sequence of m*k bits; m is a number of bits with a value of 0 in the first sequence, and k is a number of CBGs contained in each TB; the processor is configured to: generate, according to the reception result on the PDSCH, a k-bit subsequence corresponding to each of the TBs that the terminal fails to receive on the PDSCH; obtain the second sequence by connecting end-to-end the k-bit subsequences corresponding to the TBs that the terminal fails to receive on the PDSCH. ### Claim 18 (depends on 15) The terminal according to claim 15, wherein the processor is configured to: determine HARQ feedback resource corresponding to the PDSCH; send the independently channel-coded TB-level feedback information and CBG-level feedback information on the HARQ feedback resource.