# US 12,193,036 B2 · Time domain resource allocation-based HARQ-ACK feedback generation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,193,036 B2 - Document ID: US12193036B2 - Status: Granted - Kind: B2 - Application number: 18/306,777 - Filed: 2023-04-25 - Published: 2024-06-20 - Granted: 2025-01-07 - Earliest claimed: 2020-04-17 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Wei Yang; Seyedkianoush Hosseini; Seyed Ali Akbar Fakoorian - Web page: https://patentgrep.com/patent/US12193036B2 ## CPC - H04L 1/1614: {using bitmaps} - H04W 72/53: based on regulatory allocation policies - H04L 1/1819: {with retransmission of additional or different redundancy} - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04L 1/1893: {Physical mapping arrangements (physical resource mapping in general H04L5/00)} - H04L 1/1896: {ARQ related signaling} - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04W 24/08: Testing, {supervising or monitoring} using real traffic - 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 This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for TDRA-based HARQ-ACK feedback generation. In aspects, a UE and a base station may determine that at least one TDRA candidate of a set of TDRA candidates for a PDSCH transmitted from a base station has more than one possible location within a slot. Based on the determination that the at least one TDRA candidate has more than one possible location within the slot, the UE may generate and transmit corresponding HARQ-ACK feedback to the base station, which may decode the HARQ-ACK feedback. ## Claims ### Claim 1 A method of wireless communication at a user equipment (UE), comprising: determining that at least one time-domain resource allocation (TDRA) candidate of a set of TDRA candidates for receiving a physical downlink shared channel (PDSCH) has more than one possible location within a slot based on a starting symbol of each of a plurality of physical downlink control channel (PDCCH) monitoring occasions within the slot and a length of the at least one TDRA candidate; and transmitting hybrid automatic repeat request (HARQ) acknowledgement (ACK) (HARQ-ACK) feedback based on the at least one TDRA candidate having more than one possible location within the slot. ### Claim 2 (depends on 1) The method of claim 1, further comprising: receiving the PDSCH in each of one or more TDRA candidates of the set of TDRA candidates; and generating the HARQ-ACK feedback based on the PDSCH in the one or more TDRA candidates. ### Claim 3 (depends on 1) The method of claim 1, wherein the HARQ-ACK feedback is based on a type 1 HARQ-ACK codebook (CB). ### Claim 4 (depends on 1) The method of claim 1, wherein the determining that the at least one TDRA candidate has more than one possible location within the slot comprises: determining that the UE is configured to monitor for a downlink (DL) grant in a DL control information (DCI) format 1_2 message; determining that a starting symbol for determining at least one location of the at least one TDRA within the slot is configured based on at least one PDCCH monitoring occasion of the number of PDCCH monitoring occasions within the slot when the UE is configured to monitor for the DL grant in the DCI format 1_2 message; and determining that the at least one TDRA candidate has more than one possible location within the slot when the UE determines that the starting symbol for determining the at least one location of the at least one TDRA within the slot is configured based on the at least one PDCCH monitoring occasion within the slot. ### Claim 5 (depends on 4) The method of claim 4, wherein the UE is configured to monitor for the DL grant through a radio resource control (RRC) parameter. ### Claim 6 (depends on 4) The method of claim 4, wherein the determining that the at least one TDRA candidate has more than one possible location within the slot comprises determining that there is a plurality of PDCCH monitoring occasions within the slot in which a DCI format 1_2 message is configured to be received. ### Claim 7 (depends on 4) The method of claim 4, wherein the determining that the at least one TDRA candidate has more than one possible location within the slot comprises determining that a K0 slot offset associated with each of the at least one TDRA candidate is equal to 0. ### Claim 8 (depends on 1) The method of claim 1, further comprising: determining a number of PDCCH monitoring occasions within the slot; determining, based on the number of PDCCH monitoring occasions, a first number of TDRA candidates of the at least one TDRA candidate that has more than one possible location within the slot; determining a total number of TDRA candidates within the slot, the total number of TDRA candidates within the slot including the first number of TDRA candidates within the slot, a second number of TDRA candidates corresponding to additional locations of the at least one TDRA candidate within the slot, and a third number of TDRA candidates with one possible location within the slot; and generating the HARQ-ACK feedback based on the total number of TDRA candidates. ### Claim 9 (depends on 8) The method of claim 8, further comprising determining a total number of non-overlapping TDRA candidates within the slot based on the total number of TDRA candidates, wherein the HARQ-ACK feedback is generated to include x bits, where x is equal to the total number of non-overlapping TDRA candidates. ### Claim 10 (depends on 8) The method of claim 8, further comprising determining the second number of TDRA candidates corresponding to the additional locations of the at least one TDRA candidate that are fully contained within the slot. ### Claim 11 (depends on 8) The method of claim 8, wherein the number of PDCCH monitoring occasions within the slot includes a first PDCCH monitoring occasion at a first starting symbol of S0>0, the additional locations of the at least one TDRA candidate within the slot each corresponding to a second starting symbol equal to S0 plus a starting symbol of S of the at least one TDRA candidate. ### Claim 12 A method of wireless communication at a base station, comprising: determining that at least one time-domain resource allocation (TDRA) candidate of a set of TDRA candidates for transmitting a physical downlink shared channel (PDSCH) to a user equipment (UE) has more than one possible location within a slot based on a starting symbol of each of a plurality of physical downlink control channel (PDCCH) monitoring occasions within the slot and a length of the at least one TDRA candidate; and receiving hybrid automatic repeat request (HARQ) acknowledgement (ACK) (HARQ-ACK) feedback from the UE based on the at least one TDRA candidate having more than one possible location within the slot. ### Claim 13 (depends on 12) The method of claim 12, further comprising: transmitting the PDSCH in each of one or more TDRA candidates of the set of TDRA candidates, wherein the HARQ-ACK feedback is received based on the PDSCH in the one or more TDRA candidates; and decoding the HARQ-ACK feedback received from the UE. ### Claim 14 (depends on 12) The method of claim 12, wherein the HARQ-ACK feedback is based on a type 1 HARQ-ACK codebook (CB). ### Claim 15 (depends on 12) The method of claim 12, wherein the determining that the at least one TDRA candidate has more than one possible location within the slot comprises: determining that the UE is configured to monitor for a downlink (DL) grant in a DL control information (DCI) format 1_2 message; determining that a starting symbol for determining at least one location of the at least one TDRA within the slot is configured based on at least one PDCCH monitoring occasion of the number of PDCCH monitoring occasions within the slot when the UE is determined to be configured to monitor for the DL grant in the DCI format 1_2 message; and determining that the at least one TDRA candidate has more than one possible location within the slot when the starting symbol for determining the at least one location of the at least one TDRA within the slot is configured based on the at least one PDCCH monitoring occasion within the slot. ### Claim 16 (depends on 15) The method of claim 15, wherein the UE is configured to monitor for the DL grant through a radio resource control (RRC) parameter. ### Claim 17 (depends on 15) The method of claim 15, wherein the determining that the at least one TDRA candidate has more than one possible location within the slot comprises determining that there is a plurality of PDCCH monitoring occasions within the slot in which a DCI format 1_2 message is configured to be transmitted. ### Claim 18 (depends on 15) The method of claim 15, wherein the determining that the at least one TDRA candidate has more than one possible location within the slot comprises determining that a K0 slot offset associated with each of the at least one TDRA candidate is equal to 0. ### Claim 19 (depends on 12) The method of claim 12, wherein receiving the HARQ-ACK feedback comprises: determining a number of PDCCH monitoring occasions within the slot; determining, based on the number of PDCCH monitoring occasions, a first number of TDRA candidates of the at least one TDRA candidate that has more than one possible location within the slot; and determining a total number of TDRA candidates within the slot, the total number of TDRA candidates within the slot including the first number of TDRA candidates within the slot, a second number of TDRA candidates corresponding to additional locations of the at least one TDRA candidate within the slot, and a third number of TDRA candidates with one possible location within the slot, wherein the HARQ-ACK feedback is received based on the total number of TDRA candidates. ### Claim 20 (depends on 19) The method of claim 19, further comprising determining a total number of non-overlapping TDRA candidates within the slot based on the total number of TDRA candidates, wherein the HARQ-ACK feedback is received via x bits, where x is equal to the total number of non-overlapping TDRA candidates.