# US 12,114,303 B2 · Method for aggregation transmission of multi-user downlink data and apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,114,303 B2 - Document ID: US12114303B2 - Status: Granted - Kind: B2 - Application number: 17/704,562 - Filed: 2022-03-25 - Published: 2022-07-07 - Granted: 2024-10-08 - Earliest claimed: 2019-09-27 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Shengyu Li; Lei Guan - Web page: https://patentgrep.com/patent/US12114303B2 ## CPC - H04W 72/121: for groups of terminals or users - H04L 1/0009: {by adapting the channel coding (H04L1/1812 takes precedence)} - H04L 1/1621: {Group acknowledgement, i.e. the acknowledgement message defining a range of identifiers, e.g. of sequence numbers} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 72/1273: of downlink data flows - H04W 72/512: for low-latency requirements, e.g. URLLC - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method for aggregation transmission of multi-user downlink data and an apparatus. A network device performs, based on a specific aggregation rule, bit aggregation on downlink data of a terminal device in a terminal device group, performs channel encoding and modulation on data obtained through the bit aggregation, and sends the data to a plurality of terminal devices participating in aggregation transmission. Each terminal device that receives the downlink data obtains, based on the aggregation rule, respective downlink data from the received data obtained through the bit aggregation. According to this method, the network device performs channel encoding on an aggregated bit sequence, thereby increasing a sequence length before encoding, and improving a coding gain. ## Claims ### Claim 1 A method for aggregation transmission of multi-user downlink data, wherein the method is performed by a first communications apparatus, the first communications apparatus is a first terminal device or a module of the first terminal device, and the method comprises: receiving first indication information from a network device, wherein: the first indication information indicates location information of first downlink data of the first terminal device in a first downlink bit sequence; the first downlink bit sequence comprises downlink data of each of N terminal devices, the first terminal device is one of the N terminal devices; and N is an integer greater than 1; receiving second indication information from the network device, wherein the second indication information comprises information about a first time-frequency resource; receiving a second downlink bit sequence on the first time-frequency resource; performing channel decoding on the second downlink bit sequence to obtain the first downlink bit sequence; and obtaining the first downlink data based on the first indication information and the first downlink bit sequence. ### Claim 2 (depends on 1) The method according to claim 1, wherein the method further comprises: receiving a first index from the network device, wherein the first index is an index of the first terminal device in a terminal device group, and the terminal device group comprises the N terminal devices. ### Claim 3 (depends on 2) The method according to claim 2, wherein the method further comprises: determining a second time-frequency resource based on the first index and a reference time-frequency resource, wherein: the second time-frequency resource is used to send first feedback information; and the first feedback information is acknowledgement information of the first downlink data. ### Claim 4 (depends on 3) The method according to claim 3, wherein the method further comprises: sending the first feedback information on the second time-frequency resource. ### Claim 5 (depends on 4) The method according to claim 4, wherein the method further comprises: obtaining first location information, wherein: the first location information is location information of first check information in the first downlink bit sequence; the first location information is different from second location information: the second location information is location information of second check information in the first downlink bit sequence; the first check information is a parity bit of the first downlink data; the second check information is a parity bit of second downlink data; the second downlink data is downlink data of a second terminal device; and the second terminal device is a terminal device other than the first terminal device in the N terminal devices; and determining the first check information based on the first location information and the first downlink bit sequence. ### Claim 6 (depends on 5) The method according to claim 5, wherein the method further comprises: determining the first feedback information based on the first check information. ### Claim 7 (depends on 5) The method according to claim 5, wherein: the first location information comprises: a start location; an end location; or a bit length of the first check information in the first downlink bit sequence; and the second location information comprises: a start location; an end location; or a bit length of the second check information in the first downlink bit sequence. ### Claim 8 (depends on 1) The method according to claim 1, wherein: the first indication information indicates a start location or an end location of the first downlink data in the first downlink bit sequence; or the first indication information indicates a sequence number of the first downlink data in the first downlink bit sequence and a bit length of downlink data of each of the N terminal devices. ### Claim 9 An apparatus, applied in a first terminal device, comprising: a memory; and one or more processors coupled to the memory, wherein the one or more processors are configured to: receive first indication information from a network device, wherein: the first indication information indicates location information of first downlink data of the first terminal device in a first downlink bit sequence; the first downlink bit sequence comprises downlink data of each of N terminal devices; the first terminal device is one of the N terminal devices; and N is an integer greater than 1; receive second indication information from the network device, wherein the second indication information comprises information about a first time-frequency resource; receive a second downlink bit sequence on the first time-frequency resource; perform channel decoding on the second downlink bit sequence to obtain the first downlink bit sequence; and obtain the first downlink data based on the first indication information and the first downlink bit sequence. ### Claim 10 (depends on 9) The apparatus according to claim 9, wherein the one or more processors are further configured to: receive a first index from the network device, wherein: the first index is an index of the first terminal device in a terminal device group; and the terminal device group comprises the N terminal devices. ### Claim 11 (depends on 10) The apparatus according to claim 10, wherein one or more processors are further configured to: determine a second time-frequency resource based on the first index and a reference time-frequency resource, wherein: the second time-frequency resource is used to send first feedback information; and the first feedback information is acknowledgement information of the first downlink data. ### Claim 12 (depends on 11) The apparatus according to claim 11, wherein the one or more processors are further configured to: send the first feedback information on the second time-frequency resource. ### Claim 13 (depends on 12) The apparatus according to claim 12, wherein the one or more processors are further configured to: obtain first location information, wherein: the first location information is location information of first check information in the first downlink bit sequence; the first location information is different from second location information; the second location information is location information of second check information in the first downlink bit sequence; the first check information is a parity bit of the first downlink data; the second check information is a parity bit of second downlink data; the second downlink data is downlink data of a second terminal device; and the second terminal device is a terminal device other than the first terminal device in the N terminal devices; and determine the first check information based on the first location information and the first downlink bit sequence. ### Claim 14 (depends on 13) The apparatus according to claim 13, wherein the one or more processors are further configured to: determine the first feedback information based on the first check information. ### Claim 15 (depends on 13) The apparatus according to claim 13, wherein the first location information comprises: a start location; an end location; or a bit length of the first check information in the first downlink bit sequence; and the second location information comprises: a start location; an end location; or a bit length of the second check information in the first downlink bit sequence. ### Claim 16 (depends on 9) The apparatus according to claim 9, wherein the first indication information indicates a start location or an end location of the first downlink data in the first downlink bit sequence; or the first indication information indicates a sequence number of the first downlink data in the first downlink bit sequence and a bit length of downlink data of each of the N terminal devices.