# US 12,004,130 B2 · Wireless communication method and communications apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,130 B2 - Document ID: US12004130B2 - Status: Granted - Kind: B2 - Application number: 17/372,197 - Filed: 2021-07-09 - Published: 2021-10-28 - Granted: 2024-06-04 - Earliest claimed: 2019-01-11 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Shengyu Li; Lei Guan; Ruixiang Ma - Web page: https://patentgrep.com/patent/US12004130B2 ## CPC - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - 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) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract This application provides a wireless communication method and a communications apparatus, to implement semi-static codebook feedback at a sub-slot granularity. The method includes: determining a candidate opportunity set, where a quantity of candidate opportunities included in the candidate opportunity set is a maximum quantity of non-overlapping data transmission opportunities included in a data transmission opportunity set, the data transmission opportunity set corresponds to a first set, the first set includes one or more downlink sub-time units, and the one or more downlink sub-time units correspond to a target uplink sub-time unit; and sending or receiving feedback information in the target uplink sub-time unit, where the feedback information includes a hybrid automatic repeat request acknowledgement HARQ-ACK codebook corresponding to the candidate opportunity set. ## Claims ### Claim 1 A wireless communication method, comprising: determining a candidate opportunity set, wherein a quantity of candidate opportunities comprised in the candidate opportunity set is a maximum quantity of non-overlapping groups of data transmission opportunities comprised in a data transmission opportunity set, wherein: the data transmission opportunity set corresponds to a first set, the first set comprises one or more downlink sub-time units, and the one or more downlink sub-time units correspond to a target uplink sub-time unit; and performing one of sending or receiving feedback information in the target uplink sub-time unit, wherein the feedback information comprises a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook corresponding to the candidate opportunity set, wherein the data transmission opportunity set is a union set of data transmission opportunities corresponding to K downlink time units in a second set, wherein the second set comprises a downlink time unit corresponding to all downlink sub-time units in the first set, a quantity of downlink time units corresponding to all the downlink sub-time units in the first set is K, and K is a positive integer; wherein an end location of a data transmission opportunity corresponding to a downlink time unit in the second set is in a downlink sub-time unit that is in the first set and that corresponds to the downlink time unit; and wherein the one or more downlink sub-time units included in the first set is determined based on one or more offsets, wherein a time domain offset of the target uplink sub-time unit relative to each of the one or more downlink sub-time units is one of the one or more offsets, and wherein the one or more downlink sub-time units respectively correspond to the one or more offsets. ### Claim 2 (depends on 1) The method according to claim 1, wherein the candidate opportunity set is a union set of candidate opportunities corresponding to the K downlink time units in the second set, and a quantity of candidate opportunities corresponding to one downlink time unit in the second set is a maximum quantity of non-overlapping groups of data transmission opportunities comprised in a data transmission opportunity subset corresponding to the downlink time unit. ### Claim 3 (depends on 1) The method according to claim 1, wherein a length of the downlink time unit is equal to a length of one downlink slot. ### Claim 4 (depends on 1) The method according to claim 1, wherein: the downlink time unit comprises two downlink sub-time units; and two uplink sub-time units are comprised in one uplink time unit. ### Claim 5 (depends on 1) The method according to claim 1, wherein: a length of the downlink sub-time unit is less than the length of one downlink slot, and a length of the uplink sub-time unit is less than a length of one uplink slot. ### Claim 6 (depends on 1) The method according to claim 1, wherein a length of the uplink sub-time unit is a same length as a length of the downlink sub-time unit. ### Claim 7 (depends on 1) The method of claim 1, wherein one candidate opportunity, of the candidate opportunity set, corresponds to one or more data transmission opportunities that correspond to a single ACK/NACK feedback. ### Claim 8 An apparatus, comprising: one or more processors; one or memories coupled to the one or more processors, wherein the one or more memories store a program to be executed by the one or more processors, the program including instructions that, when executed by the one or more processors, facilitate the apparatus carrying out a method comprising: determining a candidate opportunity set, wherein a quantity of candidate opportunities comprised in the candidate opportunity set is a maximum quantity of non-overlapping groups of data transmission opportunities comprised in a data transmission opportunity set, wherein: the data transmission opportunity set corresponds to a first set, the first set comprises one or more downlink sub-time units, and the one or more downlink sub-time units correspond to a target uplink sub-time unit; and performing one of sending or receiving feedback information in the target uplink sub-time unit, wherein the feedback information comprises a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook corresponding to the candidate opportunity set, wherein the data transmission opportunity set is a union set of data transmission opportunities corresponding to K downlink time units in a second set, wherein the second set comprises a downlink time unit corresponding to all downlink sub-time units in the first set, a quantity of downlink time units corresponding to all the downlink sub-time units in the first set is K, and K is a positive integer; wherein an end location of a data transmission opportunity corresponding to a downlink time unit in the second set is in a downlink sub-time unit that is in the first set and that corresponds to the downlink time unit; and wherein the one or more downlink sub-time units included in the first set is determined based on one or more offsets, wherein a time domain offset of the target uplink sub-time unit relative to each of the one or more downlink sub-time units is one of the one or more offsets, and wherein the one or more downlink sub-time units respectively correspond to the one or more offsets. ### Claim 9 (depends on 8) The apparatus according to claim 8, wherein the candidate opportunity set is a union set of candidate opportunities corresponding to the K downlink time units in the second set, and a quantity of candidate opportunities corresponding to one downlink time unit in the second set is a maximum quantity of non-overlapping groups of data transmission opportunities comprised in a data transmission opportunity subset corresponding to the downlink time unit. ### Claim 10 (depends on 8) The apparatus according to claim 8, wherein a length of the downlink time unit is equal to a length of one downlink slot. ### Claim 11 (depends on 8) The apparatus according to claim 8, wherein the downlink time unit comprises two downlink sub-time units; and two uplink sub-time units are comprised in one uplink time unit. ### Claim 12 (depends on 8) The apparatus according to claim 8, wherein a length of the downlink sub-time unit is less than the length of one downlink slot, and a length of the uplink sub-time unit is less than a length of one uplink slot. ### Claim 13 (depends on 8) The apparatus according to claim 8, wherein a length of the uplink sub-time unit is a same length as a length of the downlink sub-time unit. ### Claim 14 (depends on 8) The apparatus of claim 8, wherein one candidate opportunity, of the candidate opportunity set, corresponds to one or more data transmission opportunities that correspond to a single ACK/NACK feedback. ### Claim 15 A non-transitory computer readable medium, wherein the non-transitory computer readable medium stores instructions that, when executed by one or more processors, facilitate carrying out a method comprising determining a candidate opportunity set, wherein a quantity of candidate opportunities comprised in the candidate opportunity set is a maximum quantity of non-overlapping groups of data transmission opportunities comprised in a data transmission opportunity set, wherein: the data transmission opportunity set corresponds to a first set, the first set comprises one or more downlink sub-time units, and the one or more downlink sub-time units correspond to a target uplink sub-time unit; and performing one of sending or receiving feedback information in the target uplink sub-time unit, wherein the feedback information comprises a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook corresponding to the candidate opportunity set, wherein the data transmission opportunity set is a union set of data transmission opportunities corresponding to K downlink time units in a second set, wherein the second set comprises a downlink time unit corresponding to all downlink sub-time units in the first set, a quantity of downlink time units corresponding to all the downlink sub-time units in the first set is K, and K is a positive integer; wherein an end location of a data transmission opportunity corresponding to a downlink time unit in the second set is in a downlink sub-time unit that is in the first set and that corresponds to the downlink time unit; and wherein the one or more downlink sub-time units included in the first set is determined based on one or more offsets, wherein a time domain offset of the target uplink sub-time unit relative to each of the one or more downlink sub-time units is one of the one or more offsets, and wherein the one or more downlink sub-time units respectively correspond to the one or more offsets. ### Claim 16 (depends on 15) The non-transitory computer readable medium according to claim 15, wherein the candidate opportunity set is a union set of candidate opportunities corresponding to the K downlink time units in the second set, and a quantity of candidate opportunities corresponding to one downlink time unit in the second set is a maximum quantity of non-overlapping groups of data transmission opportunities comprised in a data transmission opportunity subset corresponding to the downlink time unit. ### Claim 17 (depends on 15) The non-transitory computer readable medium according to claim 15, wherein a length of the downlink time unit is equal to a length of one downlink slot. ### Claim 18 (depends on 15) The non-transitory computer readable medium according to claim 15, wherein: a length of the downlink sub-time unit is less than the length of one downlink slot, and a length of the uplink sub-time unit is less than a length of one uplink slot. ### Claim 19 (depends on 15) The non-transitory computer-readable medium according to claim 15, wherein a length of the uplink sub-time unit is a same length as a length of the downlink sub-time unit. ### Claim 20 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein one candidate opportunity, of the candidate opportunity set, corresponds to one or more data transmission opportunities that correspond to a single ACK/NACK feedback.