# US 12,003,457 B2 · Multi-channel hybrid transmission method and apparatus in wireless local area network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,003,457 B2 - Document ID: US12003457B2 - Status: Granted - Kind: B2 - Application number: 17/550,690 - Filed: 2021-12-14 - Published: 2022-04-07 - Granted: 2024-06-04 - Earliest claimed: 2017-12-29 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Jian Yu; Ming Gan; Yunbo Li - Web page: https://patentgrep.com/patent/US12003457B2 ## CPC - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/00: Arrangements affording multiple use of the transmission path - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 25/0204: {of multiple channels} - H04L 27/2053: {using more than one carrier, e.g. carriers with different phases} - H04L 27/2603: {Signal structure ensuring backward compatibility with legacy system} - H04L 27/2605: {Symbol extensions, e.g. Zero Tail, Unique Word [UW]} - H04L 27/26132: {using repetition} - H04L 27/26136: {Pilot sequence conveying additional information} - H04L 27/2666: {Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length} - H04W 72/12: Wireless traffic scheduling - H04L 25/0226: {sounding signals per se} - 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 relates to the field of wireless communications. In an embodiment, a data transmission method comprises generating, by an access point (AP), a scheduling frame, wherein the scheduling frame comprises a first user information field that carries first trigger information for one or more first stations (STAs) and a second user information field that carries second trigger information for one or more second STAs; sending, by the AP, the scheduling frame, wherein the scheduling frame further comprises a field indicating the scheduling frame is an extension scheduling frame, the extension scheduling frame has a trigger frame type that complies with a protocol later than the 802.11ax standard protocol. ## Claims ### Claim 1 A data transmission method for wireless local area networks, the method comprising: generating, by an access point (AP), a scheduling frame comprising a first subframe that comprises a first trigger frame and a second subframe that comprises a second trigger frame, wherein the first trigger frame comprises a first user information field that carries first trigger information for one or more first stations (STAs) and a trigger frame type extension field indicating that the first trigger frame complies with a protocol later than a 802.11ax standard protocol, wherein the second trigger frame comprises a second user information field that carries second trigger information for one or more second STAs, wherein the first trigger information schedules the one or more first STAs to perform uplink data transmission on a first part of a channel, the second trigger information schedules the one or more second STAs to perform uplink data transmission on a second part of the channel, and the first part of the channel does not overlap with the second part of the channel in frequency, and wherein the one or more first STAs comply with the protocol later than the 802.11ax standard protocol, and the one or more second STAs comply with the 802.11ax standard protocol; and sending, by the AP, the scheduling frame. ### Claim 2 (depends on 1) The method according to claim 1, wherein the scheduling frame further comprises bandwidth indication information indicating that a bandwidth of the channel is 320 MHz. ### Claim 3 (depends on 1) The method according to claim 1, wherein the method further comprises: after receiving hybrid uplink data sent by the one or more first STAs and the one or more second STAs, sending, by the AP, a multi-user block acknowledgement to at least one of the one or more first STAs and at least one of the one or more second STAs. ### Claim 4 (depends on 1) The method according to claim 1, wherein the one or more first STAs support full-duplex transmission. ### Claim 5 (depends on 1) The method according to claim 1, the trigger frame type extension field is carried in a common field of the scheduling frame. ### Claim 6 (depends on 1) The method according to claim 1, wherein the first user information field comprises indication information for preventing the one or more second STAs from misreading and the first user information field comprises a user information field corresponding to the one or more first STAs, wherein the user information field comprises at least one of association identifiers of the one or more first STAs, resource indication information of the one or more first STAs, modulation and coding schemes (MCSs) of the one or more first STAs, or stream indication information of the one or more first STAs. ### Claim 7 A data transmission method for wireless local area networks, the method comprising: receiving, by a first station (STA), a scheduling frame comprising a first subframe that comprises a first trigger frame and a second subframe that comprises a second trigger frame, wherein the first trigger frame comprises a first user information field that carries first trigger information for one or more first stations (STAs) and a trigger frame type extension field indicating that the first trigger frame complies with a protocol later than a 802.11ax standard protocol, wherein the second trigger frame comprises a second user information field that carries second trigger information for one or more second STAs, wherein the first trigger information schedules the one or more first STAs to perform uplink data transmission on a first part of a channel, the second trigger information schedules the one or more second STAs to perform uplink data transmission on a second part of the channel, and the first part of the channel does not overlap with the second part of the channel in frequency, and wherein the one or more first STAs comply with the protocol later than the 802.11ax standard protocol, and the one or more second STAs comply with the 802.11ax standard protocol; and sending, by the first STA, an uplink data on the first part of the channel. ### Claim 8 (depends on 7) The method according to claim 7, wherein the scheduling frame further comprises bandwidth indication information indicating that a bandwidth of the channel is 320 MHz. ### Claim 9 (depends on 7) The method according to claim 7, wherein the method further comprises: after sending the uplink data on the first part of the channel, receiving a multi-user block acknowledgement sent by an access point (AP). ### Claim 10 (depends on 7) The method according to claim 7, wherein the one or more first STAs support full-duplex transmission. ### Claim 11 (depends on 7) The method according to claim 7, the trigger frame type extension field is carried in a common field of the scheduling frame. ### Claim 12 (depends on 7) The method according to claim 7, wherein the first user information field comprises indication information for preventing the one or more second STAs from misreading and the first user information field comprises a user information field corresponding to the one or more first STAs, wherein the user information field comprises at least one of association identifiers of the one or more first STAs, resource indication information of the one or more first STAs, modulation and coding schemes (MCSs) of the one or more first STAs, or stream indication information of the one or more first STAs. ### Claim 13 An apparatus in wireless local area networks comprising: at least one processor; and one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to perform operations comprising: generating a scheduling frame comprising a first subframe that comprises a first trigger frame and a second subframe that comprises a second trigger frame, wherein the first trigger frame comprises a first user information field that carries first trigger information for one or more first stations (STAs) and a trigger frame type extension field indicating that the first trigger frame complies with a protocol later than a 802.11ax standard protocol, wherein the second trigger frame comprises a second user information field that carries second trigger information for one or more second STAs, wherein the first trigger information schedules the one or more first STAs to perform uplink data transmission on a first part of a channel, the second trigger information schedules the one or more second STAs to perform uplink data transmission on a second part of the channel, and the first part of the channel does not overlap with the second part of the channel in frequency, and wherein the one or more first STAs comply with the protocol later than the 802.11ax standard protocol, and the one or more second STAs comply with the 802.11ax standard protocol; and sending the scheduling frame. ### Claim 14 (depends on 13) The apparatus according to claim 13, wherein the scheduling frame further comprises bandwidth indication information indicating that a bandwidth of the channel is 320 MHz. ### Claim 15 (depends on 13) The apparatus according to claim 13, wherein the operations further comprising: after receiving hybrid uplink data sent by the one or more first STAs and the one or more second STAs, sending, by the apparatus, a multi-user block acknowledgement to at least one of the one or more first STAs and at least one of the one or more second STAs. ### Claim 16 (depends on 13) The apparatus according to claim 13, wherein the one or more first STAs support full-duplex transmission. ### Claim 17 (depends on 13) The apparatus according to claim 13, the trigger frame type extension field is carried in a common field of the scheduling frame. ### Claim 18 (depends on 13) The apparatus according to claim 13, wherein the first user information field comprises indication information for preventing the one or more second STAs from misreading and the first user information field comprises a user information field corresponding to the one or more first STAs, wherein the user information field comprises at least one of association identifiers of the one or more first STAs, resource indication information of the one or more first STAs, modulation and coding schemes (MCSs) of the one or more first STAs, or stream indication information of the one or more first STAs. ### Claim 19 An apparatus in wireless local area networks comprising: at least one processor; and one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to perform operations comprising: receiving a scheduling frame comprising a first subframe that comprises a first trigger frame and a second subframe that comprises a second trigger frame, wherein the first trigger frame comprises a first user information field that carries first trigger information for one or more first stations (STAs) and a trigger frame type extension field indicating that the first trigger frame complies with a protocol later than a 802.11ax standard protocol, wherein the second trigger frame comprises a second user information field that carries second trigger information for one or more second STAs, wherein the first trigger information schedules the one or more first STAs to perform uplink data transmission on a first part of a channel, the second trigger information schedules the one or more second STAs to perform uplink data transmission on a second part of the channel, and the first part of the channel does not overlap with the second part of the channel in frequency, and wherein the one or more first STAs comply with the protocol later than the 802.11ax standard protocol, and the one or more second STAs comply with the 802.11ax standard protocol; and sending an uplink data on the first part of the channel. ### Claim 20 (depends on 19) The apparatus according to claim 19, wherein the scheduling frame further comprises bandwidth indication information indicating that a bandwidth of the channel is 320 MHz. ### Claim 21 (depends on 19) The apparatus according to claim 19, wherein the operations further comprising: after sending the uplink data on the first part of the channel, receiving a multi-user block acknowledgement sent by an access point (AP). ### Claim 22 (depends on 19) The apparatus according to claim 19, wherein the one or more first STAs support full-duplex transmission. ### Claim 23 (depends on 19) The apparatus according to claim 19, the trigger frame type extension field is carried in a common field of the scheduling frame. ### Claim 24 (depends on 19) The apparatus according to claim 19, wherein the first user information field comprises indication information for preventing the one or more second STAs from misreading and the first user information field comprises a user information field corresponding to the one or more first STAs, wherein the user information field comprises at least one of association identifiers of the one or more first STAs, resource indication information of the one or more first STAs, modulation and coding schemes (MCSs) of the one or more first STAs, or stream indication information of the one or more first STAs.