# US 11,452,082 B2 · Data transmission method and apparatus, and data reception method and apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,452,082 B2 - Document ID: US11452082B2 - Status: Granted - Kind: B2 - Application number: 16/753,320 - Filed: 2018-11-27 - Published: 2020-09-03 - Granted: 2022-09-20 - Earliest claimed: 2017-11-29 - Assignees: Zte Corporation - Applicants: Zte Corporation - Inventors: Xing Liu; Peng Hao; Wei Gou; Zhisong Zuo; Chunli Liang; Feng Bi - Web page: https://patentgrep.com/patent/US11452082B2 ## CPC - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 76/27: Transitions between radio resource control [RRC] states - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04L 1/1896: {ARQ related signaling} - H04W 72/044: based on the type of the allocated resource - 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 data transmission method and apparatus, and a data reception method and apparatus. The data transmission method comprises steps of: generating at least one total downlink assignment index for a plurality of component carrier groups; and carrying the at least one total downlink assignment index in downlink control information to transmit the same to a receiving end. ## Claims ### Claim 1 A data transmission method, comprising: generating at least one total downlink assignment index for a plurality of component carrier groups; and carrying the at least one total downlink assignment index in a piece of downlink control information to transmit to a receiving end; wherein an uplink grant is transmitted in the same downlink control information with the at least one total downlink assignment index, and the downlink control information includes at least two Total DAI fields. ### Claim 2 (depends on 1) The method according to claim 1, wherein a plurality of component carriers are divided into the plurality of component carrier groups according to at least one of: code block group configuration information of the component carriers; a slot length or a subcarrier spacing of the component carriers; and codeword configuration information of the component carriers. ### Claim 3 (depends on 2) The method according to claim 2, wherein the code block group configuration information comprises at least one of: a number of code block groups included in a slot; and a number of code block groups included in a transmission block. ### Claim 4 (depends on 2) The method according to claim 2, wherein the codeword configuration information comprises at least one of: a number of codewords included in a slot; and a number of codewords included in a transmission block. ### Claim 5 (depends on 1) The method according to claim 1, wherein the step of generating the at least one total downlink assignment index for the plurality of component carrier groups comprises at least one of: each of the generated total downlink assignment indexes corresponding to a component carrier group; the number of the at least one of the generated total downlink assignment indexes being less than or equal to the number of the plurality of component carrier groups. ### Claim 6 (depends on 1) The method according to claim 1, wherein the total downlink assignment index is configured to indicate a number of downlink assignments required to be fed back in a specified uplink slot before the uplink grant, in the component carrier group corresponding to the total downlink assignment index; wherein the number of the downlink assignments includes at least one of: a number of slots carrying the downlink assignments; and a total number of the code block groups in all the slots carrying the downlink assignments. ### Claim 7 (depends on 6) The method according to claim 6, wherein the specified uplink slot comprises: an uplink slot indicated by the uplink grant. ### Claim 8 (depends on 1) The method according to claim 1, wherein the step of carrying the at least one total downlink assignment index in the downlink control information to transmit to the receiving end comprises at least one of: setting, in the downlink control information, a first information field for carrying the at least one total downlink assignment index, according to a maximum number of the total downlink assignment indexes, wherein a bit number occupied by the first information field is equal to a bit number required when the maximum number of the total downlink assignment indexes are transmitted; setting, in the downlink control information, a second information field for carrying the at least one total downlink assignment index, according to a current number of the total downlink assignment indexes, wherein a bit number occupied by the second information field is equal to a bit number required when the current number of the total downlink assignment indexes are transmitted; setting, in the downlink control information, a third information field for carrying one total downlink assignment index, wherein, when the number of the total downlink assignment indexes is more than one, information fields in the downlink control information except the third information field are multiplexed to carry residual total downlink assignment indexes, wherein a bit number occupied by the third information field is equal to a bit number required when the one total downlink assignment index is transmitted; multiplexing, in the downlink control information, a specified information field in the downlink control information to carry the at least one total downlink assignment index; and multiplexing, in the downlink control information, the specified information field in the downlink control information to carry the total downlink assignment index, wherein, under the condition that the bit number the specified information field is able to carry is smaller than the bit number required when a plurality of total downlink assignment indexes are transmitted, a fourth information field to carry the residual total downlink assignment indexes is set, wherein a bit number occupied by the fourth information field is equal to a bit number required when the residual total downlink assignment indexes are transmitted. ### Claim 9 (depends on 8) The method according to claim 8, wherein the specified information field in the downlink control information comprises at least one of: an indication information field of uplink grant timing; and an indication information field of code block group transmission. ### Claim 10 (depends on 8) The method according to claim 8, wherein the third information field is configured to carry a total downlink assignment index corresponding to a component carrier group where the third information field is located. ### Claim 11 (depends on 1) A data transmission apparatus, configured to perform the method according to claim 1. ### Claim 12 (depends on 1) A storage medium, comprising a stored program, wherein the program, when executed, performs the method according to claim 1. ### Claim 13 (depends on 1) A processor, configured to execute a program, wherein the program, when executed by the processor, performs the method according to claim 1. ### Claim 14 A data reception method, comprising: receiving, in downlink control information, at least one total downlink assignment index, wherein the at least one total downlink assignment index corresponds to a plurality of component carrier groups; and determining a size of a feedback codebook of the corresponding component carrier group, according to the at least one total downlink assignment index; wherein an uplink grant information and the at least one total downlink assignment index are received in the same downlink control information, and the downlink control information includes at least two Total DAI fields. ### Claim 15 (depends on 14) The method according to claim 14, wherein, after at least one total downlink assignment index in the downlink control information is received, the total downlink assignment index is configured to determine information of: a number of downlink assignments required to be fed back in a specified uplink slot before the uplink grant, in the component carrier group corresponding to the total downlink assignment index, wherein the number of the downlink assignments comprises at least one of: a number of slots carrying the downlink assignments; and a total number of the code block groups carrying all the slots of the downlink assignments. ### Claim 16 (depends on 15) The method according to claim 15, wherein the specified uplink slot comprises: the uplink slot indicated by the uplink grant. ### Claim 17 (depends on 14) A data reception apparatus, configured to perform the method according to claim 14.