# US 2026/0100804 A1 · Method for transmitting physical layer protocol data unit and communication apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0100804 A1 - Document ID: US20260100804A1 - Status: Published application - Kind: A1 - Application number: 19/416,137 - Filed: 2025-12-11 - Published: 2026-04-09 - Earliest claimed: 2023-06-12 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Mengshi Hu; Ming Gan; Bo Gong; Jian Yu - Web page: https://patentgrep.com/patent/US20260100804A1 ## CPC - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04L 25/0224: {using sounding signals} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - 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 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 25/02: Details {; arrangements for supplying electrical power along data transmission lines (systems for transmitting signals via power distribution lines H04B3/54)} - H04L 27/26: Systems using multi-frequency codes (H04L27/32 takes precedence) - H04L 27/2602: {Signal structure} - H04L 27/26025: {Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking (allocating sub-channels of the transmission path H04L5/003)} - H04L 27/2603: {Signal structure ensuring backward compatibility with legacy system} - H04L 27/261: {Details of reference signals} - H04L 27/2613: {Structure of the reference signals} - H04L 27/26136: {Pilot sequence conveying additional information} - H04L 27/2646: {using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length} - H04L 27/2657: {Carrier synchronisation} - H04L 27/2675: {Pilot or known symbols} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method for transmitting a physical layer protocol data unit and a communication apparatus is disclosed. According to the method, a first device generates a PPDU. The PPDU includes first information carried in a first subcarrier set. The first information includes data information and pilot information. The first subcarrier set includes at least one first RU and/or at least one first MRU. The data information is carried on a data subcarrier included in the at least one first RU and/or a data subcarrier included at least one MRU. The pilot information includes first pilot information carried on a first pilot subcarrier included in the at least one first RU and/or a first pilot subcarrier included in the at least one MRU. This helps increase a number of pilot subcarriers. ## Claims ### Claim 1 A method for transmitting a physical layer protocol data unit (PPDU), comprising: generating, by a first device, a PPDU, wherein the PPDU comprises first information carried in a first subcarrier set, the first information comprises data information and pilot information, the first subcarrier set comprises at least one first resource unit (RU) and/or at least one first multi-resource unit (MRU), the data information is carried on a data subcarrier included in the at least one first RU and/or a data subcarrier included in the at least one first MRU, and the pilot information comprises first pilot information carried on a first pilot subcarrier included in the at least one first RU and/or a first pilot subcarrier included in the at least one first MRU; and sending, by the first device, the PPDU. ### Claim 2 (depends on 1) The method according to claim 1, wherein an index corresponding to the first pilot subcarrier is {−116, −90, −48, −22, 22, 48, 90, 116} or {−116, −90, −48, −22, −10, 10, 22, 48, 90, 116}. ### Claim 3 (depends on 1) The method according to claim 1, wherein the first subcarrier set comprises Y subcarriers, and the at least one first RU and/or the at least one first MRU comprise/comprises L data subcarriers and K first pilot subcarriers, wherein Y, L, and K are all positive integers, and Y>L+K. ### Claim 4 (depends on 3) The method according to claim 3, wherein the pilot information further comprises second pilot information carried on M second pilot subcarriers, and the M second pilot subcarriers occupy subcarrier indices different from the L data subcarriers and the K first pilot subcarriers in the Y subcarriers, wherein M is a positive integer. ### Claim 5 (depends on 3) The method according to claim 3, wherein the pilot information further comprises third pilot information carried on T third pilot subcarriers, and the T third pilot subcarriers are in a subcarrier set spanning a bandwidth of the PPDU and are different from the Y subcarriers, wherein T is a positive integer. ### Claim 6 (depends on 1) The method according to claim 1, wherein a subcarrier index range corresponding to the first subcarrier set is the same as a subcarrier index range corresponding to a 242-tone RU; and the at least one first RU and/or the at least one first MRU comprise/comprises two 106-tone RUs; or the at least one first RU and/or the at least one first MRU comprise/comprises two 106-tone RUs and one 26-tone RU; or the at least one first RU and/or the at least one first MRU comprise/comprises a 106+26-tone MRU and one 106-tone RU. ### Claim 7 (depends on 6) The method according to claim 6, wherein subcarrier index ranges corresponding to the two 106-tone RUs comprised in the at least one first RU and/or the at least one first MRU are [−122: −17] and [17: 122] respectively, and pilot subcarrier indexes corresponding to the two 106-tone RUs comprised in the at least one first RU and/or the at least one first MRU are {−116, −90, −48, −22} and {22, 48, 90, 116} respectively; or subcarrier index ranges corresponding to the two 106-tone RUs and the 26-tone RU that are comprised in the at least one first RU and/or the at least one first MRU are [−122: −17], [17: 122], and [−16: −4, 4: 16] respectively, and pilot subcarrier indexes corresponding to the two 106-tone RUs and the 26-tone RU that are comprised in the at least one first RU and/or the at least one first MRU are {−116, −90, −48, −22}, {22, 48, 90, 116}, and {−10, 10} respectively, wherein [a: b] represents index values of subcarriers starting from a, ending at b, and comprising a and b, with an increment of 1. ### Claim 8 (depends on 1) The method according to claim 1, further comprising: mapping, by the first device via a general bit-to-constellation point generation module, X bits corresponding to the data information to the data subcarrier included in the at least one first RU and/or the data subcarrier corresponding to the at least one first MRU, wherein X is a positive integer. ### Claim 9 (depends on 1) The method according to claim 1, wherein the PPDU comprises at least one physical layer service data unit (PSDU), and the at least one PSDU one-to-one corresponds to the at least one first RU and/or the at least one first MRU. ### Claim 10 (depends on 1) The method according to claim 1, further comprising: allocating, by the first device, X bits corresponding to the data information to the at least one first RU and/or the at least one first MRU, wherein different bits in the X bits are allocated to different RUs or MRUs in the at least one first RU and/or the at least one first MRU, and X is a positive integer. ### Claim 11 (depends on 10) The method according to claim 10, wherein allocating, by the first device, the X bits corresponding to the data information to the at least one first RU and/or the at least one first MRU comprises: allocating, by the first device, the X bits to the at least one first RU and/or the at least one first MRU in N rounds of allocation processes, wherein in an nth round of allocation process, the first device first allocates, in a predefined order, at least one bit in the X bits to a first RU or a first MRU that is ranked ahead in the at least one first RU and/or the at least one first MRU, and then allocates at least one bit in the X bits to a first RU or a first MRU that is ranked behind in the at least one first RU and/or the at least one first MRU, wherein N is a positive integer, and n=1, 2, . . . , or N. ### Claim 12 (depends on 11) The method according to claim 11, wherein N>1, and in different rounds of allocation processes in the N rounds of allocation processes, numbers of bits allocated by the first device to a same first RU or a same first MRU are the same or different. ### Claim 13 (depends on 11) The method according to claim 11, wherein the predefined order is any one of the following: a descending order of numbers of subcarriers comprised in the first RU or the first MRU; or an ascending order of numbers of subcarriers comprised in the first RU or the first MRU; or a descending order of frequencies of the first RU or the first MRU; or an ascending order of frequencies of the first RU or the first MRU. ### Claim 14 (depends on 1) The method according to claim 1, wherein a pilot sequence corresponding to a pilot subcarrier comprised in the first subcarrier set is obtained by performing a first operation on a pilot sequence corresponding to at least one second RU and/or a pilot sequence corresponding to at least one second MRU, and the first operation comprises one or more of: splicing, bit flipping, cyclic shift, or exclusion. ### Claim 15 (depends on 5) The method according to claim 5, wherein a pilot sequence corresponding to a pilot subcarrier comprised in the bandwidth corresponding to the PPDU is obtained by performing a first operation on a pilot sequence corresponding to at least one second RU and/or a pilot sequence corresponding to at least one second MRU, and the first operation comprises one or more of the following: splicing, bit flipping, cyclic shift, or exclusion. ### Claim 16 (depends on 1) The method according to claim 1, wherein the PPDU further comprises first indication informationindicating that the first subcarrier set comprises the at least one first RU and/or the at least one first MRU. ### Claim 17 (depends on 1) The method according to claim 1, wherein the PPDU further comprises second indication information for determining the at least one first RU and/or the at least one first MRU. ### Claim 18 A method for transmitting a physical layer protocol data unit, comprising: receiving, by a second device, a physical layer protocol data unit (PPDU) from a first device, wherein the PPDU comprises first information carried in a first subcarrier set, the first information comprises data information and pilot information, the first subcarrier set comprises at least one first resource unit (RU) and/or at least one first multi-resource unit (MRU), the data information is carried on a data subcarrier included in the at least one first RU and/or a data subcarrier included in the at least one first MRU, and the pilot information comprises first pilot information carried on a first pilot subcarrier included in the at least one first RU and/or a first pilot subcarrier included in the at least one first MRU; and parsing, by the second device, the PPDU.