# US 12,184,420 B2 · Apparatus and method of one-shot HARQ-ACK codebook determination > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,184,420 B2 - Document ID: US12184420B2 - Status: Granted - Kind: B2 - Application number: 17/625,664 - Filed: 2019-07-12 - Published: 2022-07-21 - Granted: 2024-12-31 - Earliest claimed: 2019-07-12 - Assignees: Lenovo (Beijing) Limited - Applicants: Lenovo (Beijing) Limited - Inventors: Haipeng Lei; Alexander Golitschek Edler Von Elbwart; Yu Zhang - Web page: https://patentgrep.com/patent/US12184420B2 ## CPC - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 1/1822: involving configuration of automatic repeat request [ARQ] with parallel processes - H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)} - H04L 1/1614: {using bitmaps} - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - 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 Apparatus and methods for one-shot HARQ-ACK codebook determination are disclosed. The apparatus includes: a receiver that receives a first signal configuring a number of Downlink (DL) Hybrid Automatic Repeat Request (HARQ) processes, and a second signal triggering a HARQ-Acknowledgement (HARQ-ACK) feedback for each of the number of DL HARQ processes; and a transmitter that transmits a HARQ-ACK codebook, wherein the HARQ-ACK codebook comprises a first part including the HARQ-ACK feedback for each of the number of DL HARQ processes. The HARQ-ACK codebook may further comprise a second part and each bit in the second part corresponds to a HARQ process of the number of DL HARQ process with positive acknowledgement reported in the first part for the HARQ process. ## Claims ### Claim 1 An apparatus comprising: a receiver that receives a first signal configuring a number of downlink (DL) hybrid automatic repeat request (HARQ) processes, and a second signal triggering a HARQ acknowledgment (HARQ-ACK) feedback for each of the number of DL HARQ processes; and a transmitter that transmits a HARQ-ACK codebook, wherein the HARQ-ACK codebook comprises a first part including the HARQ-ACK feedback for each of the number of DL HARQ processes. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the HARQ-ACK codebook further comprises a second part and each bit in the second part corresponds to a HARQ process of the number of DL HARQ process with positive acknowledgement reported in the first part for the HARQ process. ### Claim 3 (depends on 2) The apparatus of claim 2, wherein each bit in the second part indicates whether the positive acknowledgement in the first part for the HARQ process is retransmitted from an earlier HARQ-ACK feedback or initially transmitted. ### Claim 4 (depends on 2) The apparatus of claim 2, wherein the second part comprises X bits and X is equal to the number of DL HARQ processes. ### Claim 5 (depends on 4) The apparatus of claim 4, wherein each bit in the second part corresponds to one DL HARQ process of the number of DL HARQ processes. ### Claim 6 (depends on 2) The apparatus of claim 2, wherein the second part comprises X bits and X is configured by radio resource control (RRC) signaling. ### Claim 7 (depends on 6) The apparatus of claim 6, wherein the X bits correspond to the first or last X HARQ processes of a subset of the number of DL HARQ processes, wherein each of the subset of the number of DL HARQ processes is reported positive acknowledgement both in an earlier HARQ-ACK codebook and in the HARQ-ACK codebook. ### Claim 8 (depends on 2) The apparatus of claim 2, wherein the second part comprises X bits and X is indicated in the second signal. ### Claim 9 (depends on 8) The apparatus of claim 8, wherein X is equal to a number of positive acknowledgement bits in an earlier HARQ-ACK codebook or a number of DL transmissions between a first time instance for reporting the earlier HARQ-ACK codebook and a second time instance for reporting the HARQ-ACK codebook. ### Claim 10 (depends on 2) The apparatus of claim 2, wherein each bit in the second part indicates whether the positive acknowledgement in the first part for the HARQ process is same or different to an earlier HARQ-ACK feedback. ### Claim 11 (depends on 2) The apparatus of claim 2, wherein each bit in the second part indicates whether the positive acknowledgement in the first part for the HARQ process is new positive acknowledgement or outdated positive acknowledgement. ### Claim 12 (depends on 2) The apparatus of claim 2, wherein each bit in the second part is a latest received new data indicator (NDI) bit corresponding to the HARQ process. ### Claim 13 (depends on 2) The apparatus of claim 2, wherein each bit in the second part is a latest received new data indicator (NDI) bit corresponding to a transport block of the HARQ process. ### Claim 14 (depends on 1) The apparatus of claim 1, wherein the HARQ-ACK feedback for each of the number of DL HARQ processes is concatenated in an order of HARQ process ID in the first part. ### Claim 15 (depends on 1) The apparatus of claim 1, wherein the first signal is RRC signaling and the second signal is downlink control information (DCI). ### Claim 16 An apparatus comprising: a transmitter that transmits a first signal configuring a number of DL HARQ processes, and a second signal triggering a HARQ-ACK feedback for each of the number of DL HARQ processes; and a receiver that receives a HARQ-ACK codebook, wherein the HARQ-ACK codebook comprises a first part including the HARQ-ACK feedback for each of the number of DL HARQ processes. ### Claim 17 (depends on 16) The apparatus of claim 16, wherein the HARQ-ACK codebook further comprises a second part and each bit in the second part corresponds to a HARQ process of the number of DL HARQ process with positive acknowledgement reported in the first part for the HARQ process. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein each bit in the second part is a latest received NDI bit corresponding to the HARQ process. ### Claim 19 (depends on 16) The apparatus of claim 16, wherein the HARQ-ACK feedback for each of the number of DL HARQ processes is concatenated in an order of HARQ process ID in the first part. ### Claim 20 A method comprising: receiving a first signal configuring a number of DL HARQ processes, and a second signal triggering a HARQ-ACK feedback for each of the number of DL HARQ processes; and transmitting a HARQ-ACK codebook, wherein the HARQ-ACK codebook comprises a first part including the HARQ-ACK feedback for each of the number of DL HARQ processes.