# US 2019/0173733 A1 · Data transmission 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 2019/0173733 A1 - Document ID: US20190173733A1 - Status: Published application - Kind: A1 - Application number: 16/256,183 - Filed: 2019-01-24 - Published: 2019-06-06 - Earliest claimed: 2012-08-17 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Yue LI; Xiaolong GUO; Song ZHU; Fei YANG - Web page: https://patentgrep.com/patent/US20190173733A1 ## CPC - H04W 12/06: Authentication - H04L 1/0091: {arrangements specific to receivers, e.g. format detection (detection of data rate H04L25/0262; detection of coding rate H04L1/0046)} - H04L 69/22: Parsing or analysis of headers - H04W 28/065: {using assembly or disassembly of packets} - H04W 12/71: Hardware identity - H04W 72/121: for groups of terminals or users - H04W 80/02: Data link layer protocols - 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 Media access control MAC payloads corresponding to a plurality of receiving devices are encapsulated in one MAC packet data unit (MU), where the MAC PDU includes a header, the MAC payloads and identification information of each receiving device in the plurality of receiving devices; and the header includes a plurality of subheaders, the plurality of subheaders is subheaders respectively corresponding to a MAC payload corresponding to each receiving device, the MAC payload corresponding to each receiving device includes a MAC control element (CE) and/or a MAC service data unit (SDU), and the identification information is used for identifying each receiving device. In the foregoing solutions, transmission of a MAC PDU during multi-user cooperated communication is implemented. ## Claims ### Claim 1 A data sending method, comprising: receiving, by a receiving device, a media access control (MAC) packet data unit (PDU) comprising a plurality of MAC payloads each corresponding to different one of a plurality of receiving devices, identification information of each receiving device in the plurality of receiving devices, and a plurality of subheaders each corresponding to a different one of the MAC payloads, wherein each of the plurality of MAC payloads comprise at least one kind of a MAC control element (CE) and a MAC service data unit (SDU); and obtaining, by the receiving device, from the received MAC PDU at least one MAC payload corresponding to the receiving device according to identification information. ### Claim 2 (depends on 1) The method according to claim 1, wherein each of the plurality of receiving devices corresponds to a one of a plurality of specific fields that carry identification information of the corresponding receiving device. ### Claim 3 (depends on 2) The method according to claim 2, wherein each of the plurality of specific fields comprises a first field or a last field in a plurality of fields, each plurality of fields corresponding to a different one of the MAC payloads that correspond to one of the plurality of receiving devices. ### Claim 4 (depends on 1) The method according to claim 1, wherein: the MAC payloads corresponding to the plurality of receiving devices in the MAC PDU are encapsulated in a plurality of groups, each of the plurality of groups is in a one-to-one correspondence to a different one of the plurality of receiving devices, all MAC payloads of one receiving device in the plurality of receiving devices are encapsulated in one group, and wherein positions of MAC payloads corresponding to one receiving device are continuous. ### Claim 5 (depends on 4) The method according to claim 4, wherein: the identification information comprises a MAC CE, wherein each receiving device corresponds to one MAC CE used for bearing the identifier and corresponds to one identifier; and a position of the MAC CE used for bearing the identifier in all the MAC payloads of one receiving device indicates a position of all the MAC payloads of the one receiving device in the MAC PDU. ### Claim 6 (depends on 5) The method according to claim 5, wherein the MAC CE used for bearing the identifier is located at a first or last one of all the MAC payloads of one receiving device. ### Claim 7 (depends on 1) The method according to claim 1, wherein the identification information comprises a value represented by a reserved bit, and the value represented by the reserved bit is one-to-one corresponding to the plurality of receiving devices. ### Claim 8 An apparatus, comprising: a processor; a storage medium comprising executable instructions which, when executed by the processor, cause the apparatus to: receive a media access control (MAC) packet data unit (PDU) comprising a plurality of MAC payloads each corresponding to a different one of a plurality of receiving devices, identification information of each receiving device in the plurality of receiving devices, and a plurality of subheaders each corresponding to a different one of the MAC payloads, wherein each of the plurality of MAC payloads comprise at least one kind of a MAC control element (CE) and a MAC service data unit (SDU); and obtain from the received MAC PDU at least one MAC payload corresponding to the apparatus according to identification information, wherein the apparatus is one of the plurality of receiving devices. ### Claim 9 (depends on 8) The apparatus according to claim 8, wherein each of the plurality of receiving devices corresponds to a one of a plurality of specific fields that carry identification information of the corresponding receiving device. ### Claim 10 (depends on 9) The apparatus according to claim 9, wherein each of the plurality of specific fields comprises a first field or a last field in a plurality of fields, each plurality of fields corresponding to a different one of the MAC payloads that correspond to one of the plurality of receiving devices. ### Claim 11 (depends on 8) The apparatus according to claim 8, wherein: the MAC payloads corresponding to the plurality of receiving devices in the MAC PDU are encapsulated in a plurality of groups, each of the plurality of groups is in a one-to-one correspondence to a different one of the plurality of receiving devices, all MAC payloads of one receiving device in the plurality of receiving devices are encapsulated in one group, and wherein positions of MAC payloads corresponding to one receiving device are continuous. ### Claim 12 (depends on 11) The apparatus according to claim 11, wherein: the identification information comprises a MAC CE, wherein each receiving device corresponds to one MAC CE used for bearing the identifier and corresponds to one identifier; and a position of the MAC CE used for bearing the identifier in all the MAC payloads of one receiving device indicates a position of all the MAC payloads of the one receiving device in the MAC PDU. ### Claim 13 (depends on 12) The apparatus according to claim 12, wherein the MAC CE used for bearing the identifier is located at a first or last one of all the MAC payloads of one receiving device. ### Claim 14 (depends on 8) The apparatus according to claim 8, wherein the identification information comprises a value represented by a reserved bit, and the value represented by the reserved bit is one-to-one corresponding to the plurality of receiving devices. ### Claim 15 A non-transitory computer-readable storage medium comprising instructions which, when executed by a receiving device, cause the receiving device to: receive a media access control (MAC) packet data unit (PDU) comprising a plurality of MAC payloads each corresponding to a different one of a plurality of receiving devices, identification information of each receiving device in the plurality of receiving devices, and a plurality of subheaders each corresponding to a different one of the MAC payloads, wherein each of the plurality of MAC payloads comprise at least one kind of a MAC control element (CE) and a MAC service data unit (SDU); and obtain from the received MAC PDU at least one MAC payload corresponding to the receiving device according to identification information. ### Claim 16 (depends on 15) The non-transitory computer-readable storage medium according to claim 15, wherein each of the plurality of receiving devices corresponds to a one of a plurality of specific fields that carry identification information of the corresponding receiving device. ### Claim 17 (depends on 16) The non-transitory computer-readable storage medium according to claim 16, wherein each of the plurality of specific fields comprises a first field or a last field in a plurality of fields, each plurality of fields corresponding to a different one of the MAC payloads that correspond to one of the plurality of receiving devices. ### Claim 18 (depends on 15) The non-transitory computer-readable storage medium according to claim 15, wherein: the MAC payloads corresponding to the plurality of receiving devices in the MAC PDU are encapsulated in a plurality of groups, each of the plurality of groups is in a one-to-one correspondence to a different one of the plurality of receiving devices, all MAC payloads of one receiving device in the plurality of receiving devices are encapsulated in one group, and wherein positions of MAC payloads corresponding to one receiving device are continuous. ### Claim 19 (depends on 18) The non-transitory computer-readable storage medium according to claim 18, wherein: the identification information comprises a MAC CE, wherein each receiving device corresponds to one MAC CE used for bearing the identifier and corresponds to one identifier; and a position of the MAC CE used for bearing the identifier in all the MAC payloads of one receiving device indicates a position of all the MAC payloads of the one receiving device in the MAC PDU. ### Claim 20 (depends on 19) The non-transitory computer-readable storage medium according to claim 19, wherein the identification information comprises a value represented by a reserved bit, and the value represented by the reserved bit is one-to-one corresponding to the plurality of receiving devices.