Method of transmitting information, and device

Description

1 / 81 METHOD OF TRANSMITTING INFORMATION, AND DEVICE TECHNICAL FIELD

[0001] This application relates to the field of wireless communication technologies and, in particular, to a method of transmitting information and to an apparatus. BACKGROUND

[0002] In both low-frequency and high-frequency scenarios, the peak-to-average power ratio (PAPR) is an important factor affecting system performance. In an orthogonal frequency division multiplexing (OFDM) system, a time-domain transmission signal can be understood as the sum of all subcarriers obtained through the inverse fast Fourier transform (IFFT). In this case, compared to a single-carrier system, in the OFDM system, there is a probability that a transmission signal will have a high peak value and, therefore, a high PAPR.A high PAPR not only reduces the efficiency of a transmitter's power amplifier, but also affects the signal-to-quantization noise ratio (SQNR) of a digital-to-analog converter and the signal-to-quantization noise ratio of an analog-to-digital converter. Therefore, PAPR reduction needs to be a focus of OFDM system design. Furthermore, at high frequencies, as the power amplifier exhibits a greater degree of non-linearity as the operating frequency increases, reducing PAPR becomes even more important. SUMMARY

[0003] This application provides a method of transmitting information and a device for reducing a PAPR.

[0004] According to a first aspect, a method of transmitting information is provided. The method can be carried out Petition 870250086893, dated 09 / 25 / 2025, page 15 / 123 2 / 81 by a first device. The first device can be a network device or a chip / chip system. In this method, the first device sends a physical protocol data unit (PPDU) to a second device. The PPDU includes resource unit allocation information, and the resource unit allocation information indicates one or more resource units. The resource unit allocation information further indicates that the one or more resource units include a first set of subcarriers and a second set of subcarriers, and the first set of subcarriers and the second set of subcarriers do not overlap. The PPDU includes first data sent in the first set of subcarriers and a sequence sent in the second set of subcarriers, and the sequence is used to reduce a PAPR.

[0005] Based on the previous solution, the first data can be carried on the first set of subcarriers, the sequence can be carried on the second set of subcarriers, and the PAPR can be flexibly reduced by changing one value of each second subcarrier included in the second set of subcarriers. Furthermore, the value of the first set of subcarriers does not change, and the transmission performance of the first data is not affected.

[0006] In one possible implementation, the resource unit allocation information includes one or more user fields. The one or more user fields include a user field that indicates the second set of subcarriers, and an identifier for the user field that indicates the second set of subcarriers is a special value. Alternatively, the resource unit allocation information indicates that part or all of one or more resource units include only the second set of subcarriers.

[0007] Based on the previous solution, compared to a Petition 870250086893, dated 09 / 25 / 2025, page 16 / 123 3 / 81 solution in which the first device determines the second set of subcarriers and changes the value of the second set of subcarriers, in the solution, the first device can indicate the second set of subcarriers to the second device, so that the second device can also learn about the second set of subcarriers whose subcarrier value is changed, and the complexity of data analysis by the second device can be reduced.

[0008] In one possible implementation, resource unit allocation information can be carried in a punctured channel information field.

[0009] Based on the previous solution, when one or more available resource units are indicated by means of the punched channel information field, that one or more resource units include the first set of subcarriers and the second set of subcarriers can be notified, so that the solution is applicable to an orthogonal frequency division multiplexing access (OFDMA) mode.

[0010] In one possible implementation, the second set of subcarriers includes one or more null subcarriers, a guard subcarrier, and a pilot subcarrier. Based on the previous solution, the second set of subcarriers is implemented using the null subcarrier, the guard subcarrier, and the pilot subcarrier, so that the number of first subcarriers occupied as second subcarriers can be reduced, and more first subcarriers are used to transmit data, thus saving transmission resources.

[0011] In one possible implementation, the PPDU includes a plurality of OFDM symbols, and the selection of a guard interval value among the plurality of OFDM symbols is related to the second set of subcarriers. Based on Petition 870250086893, dated 09 / 25 / 2025, page 17 / 123 4 / 81 In the previous solution, the second set of subcarriers can be used to reduce the PAPR, but some additional processing time is required to obtain an appropriate subcarrier value. In the previous solution, an appropriate subcarrier value can be generated through additional time provided by the guard interval between the plurality of OFDM symbols.

[0012] In one possible implementation, the guard interval includes one or more of a cyclic prefix, cyclic suffix, and a fixed sequence. Based on this solution, the guard interval can be implemented using one or more of the cyclic prefix, cyclic suffix, and fixed sequence, so that additional time can be provided to generate an appropriate subcarrier value.

[0013] In one possible implementation, at least one field before a data field included in the PPDU may include a predefined padding bit. Based on this solution, additional time is provided via the predefined padding bit to generate an appropriate subcarrier value.

[0014] According to a second aspect, a method of information transmission is provided. The method can be implemented by a first device. The first device can be a network device or a chip / chip system. In the method, the first device sends a PPDU to a second device, where the PPDU includes a data subcarrier and a reference subcarrier. The reference subcarrier indicates an adjustment factor, the adjustment factor indicates a coefficient by which a part or all of the data subcarriers in the data subcarriers are multiplied, and the coefficient is used to reduce a PAPR.

[0015] Based on this solution, some or all of the data subcarriers can be multiplied by the coefficient to reduce the PAPR, and some or all of the data subcarriers can still carry data. Therefore, compared to the reduction Petition 870250086893, dated 09 / 25 / 2025, page 18 / 123 5 / 81 of the PAPR through the second set of subcarriers, in the solution, transmission resources can be saved.

[0016] In one possible implementation, the reference subcarrier includes one or more pilot subcarriers, a data subcarrier, a null subcarrier, and a guard subcarrier.

[0017] According to a third aspect, a method of information transmission is provided. The method can be implemented by a second device. The second device can be a terminal device or a chip / chip system. In the method, the second device receives a PPDU from a first device. The PPDU includes resource unit allocation information, and the resource unit allocation information indicates one or more resource units. The resource unit allocation information further indicates that the one or more resource units include a first set of subcarriers and a second set of subcarriers, and the first set of subcarriers and the second set of subcarriers do not overlap. The PPDU includes first data in the first set of subcarriers and a sequence in the second set of subcarriers, and the sequence is used to reduce a PAPR.

[0018] In one possible implementation, the resource unit allocation information includes one or more user fields. A user field whose identifier is a special value in one or more user fields indicates the second set of subcarriers. Alternatively, the resource unit allocation information indicates that part or all of one or more resource units include only the second set of subcarriers.

[0019] In one possible implementation, resource unit allocation information is carried in a punched channel information field.

[0020] In one possible implementation, the second set of Petition 870250086893, dated 09 / 25 / 2025, page 19 / 123 6 / 81 subcarriers includes one or more null subcarriers, a guard subcarrier, and a pilot subcarrier.

[0021] In one possible implementation, the PPDU includes a plurality of OFDM symbols, and the selection of a guard interval value among the plurality of OFDM symbols is related to the second set of subcarriers.

[0022] In one possible implementation, the guard interval includes one or more of a cyclic prefix, cyclic suffix, and a fixed sequence.

[0023] In one possible implementation, at least one field before a data field included in the PPDU includes a predefined padding bit.

[0024] According to a fourth aspect, a method of information transmission is provided. The method can be performed by a second device. The second device can be a terminal device or a chip / chip system. In the method, the second device receives a PPDU from a first device, where the PPDU includes a data subcarrier and a reference subcarrier. The reference subcarrier indicates an adjustment factor, the adjustment factor indicates a coefficient by which a part or all of the data subcarriers in the data subcarriers are multiplied, and the coefficient is used to reduce a PAPR. The second device divides a part or all of the data subcarriers by the coefficient, to obtain an original value of the part or all of the data subcarriers.

[0025] In one possible implementation, the reference subcarrier includes one or more pilot subcarriers, a data subcarrier, a null subcarrier, and a guard subcarrier.

[0026] According to a fifth aspect, a communication apparatus, including a processing unit and a transceiver unit, is provided.

[0027] The processing unit is configured to Petition 870250086893, dated 09 / 25 / 2025, p. 20 / 123 7 / 81 generate a PPDU. The transceiver unit is configured to send the PPDU to a second device. The PPDU includes resource unit allocation information, and the resource unit allocation information indicates one or more resource units. The resource unit allocation information further indicates that the one or more resource units include a first set of subcarriers and a second set of subcarriers, and the first set of subcarriers and the second set of subcarriers do not overlap. The PPDU includes first data sent in the first set of subcarriers and a sequence sent in the second set of subcarriers, and the sequence is used to reduce a PAPR.

[0028] In one possible implementation, the resource unit allocation information includes one or more user fields. The one or more user fields include a user field that indicates the second set of subcarriers, and an identifier for the user field that indicates the second set of subcarriers is a special value. Alternatively, the resource unit allocation information indicates that part or all of one or more resource units include only the second set of subcarriers.

[0029] In one possible implementation, resource unit allocation information is carried in a punctured channel information field.

[0030] In one possible implementation, the second set of subcarriers includes one or more null subcarriers, a guard subcarrier, and a pilot subcarrier.

[0031] In one possible implementation, the PPDU includes a plurality of OFDM symbols, and the selection of a guard interval value among the plurality of OFDM symbols is related to the second set of subcarriers.

[0032] In one possible implementation, the guard interval Petition 870250086893, dated 09 / 25 / 2025, p. 21 / 123 8 / 81 includes one or more cyclic prefixes, cyclic suffixes, and a fixed sequence.

[0033] In one possible implementation, at least one field before a data field included in the PPDU includes a predefined padding bit.

[0034] According to a sixth aspect, a communication apparatus, including a processing unit and a transceiver unit, is provided.

[0035] The processing unit is configured to generate a PPDU. The transceiver unit is configured to send the PPDU to a second device, where the PPDU includes a data subcarrier and a reference subcarrier. The reference subcarrier indicates an adjustment factor, the adjustment factor indicates a coefficient by which some or all of the data subcarriers in the data subcarriers are multiplied, and the coefficient is used to reduce a PAPR.

[0036] In one possible implementation, the reference subcarrier includes one or more pilot subcarriers, a data subcarrier, a null subcarrier, and a guard subcarrier.

[0037] According to a seventh aspect, a communication apparatus is provided, including a processing unit and a transceiver unit.

[0038] The transceiver unit is configured to receive a PPDU from a first device. The PPDU includes resource unit allocation information, and the resource unit allocation information indicates one or more resource units. The resource unit allocation information further indicates that the one or more resource units include a first set of subcarriers and a second set of subcarriers, and the first set of subcarriers and the second set of subcarriers do not overlap. The processing unit is configured to determine the first set. Petition 870250086893, dated 09 / 25 / 2025, page 22 / 123 9 / 81 of subcarriers and the second set of subcarriers based on resource unit allocation information. The PPDU includes first data in the first set of subcarriers and a sequence in the second set of subcarriers, and the sequence is used to reduce a PAPR.

[0039] In one possible implementation, the resource unit allocation information includes one or more user fields. A user field whose identifier is a special value in one or more user fields indicates the second set of subcarriers. Alternatively, the resource unit allocation information indicates that part or all of one or more resource units include only the second set of subcarriers.

[0040] In one possible implementation, resource unit allocation information is carried in a punched channel information field.

[0041] In one possible implementation, the second set of subcarriers includes one or more null subcarriers, a guard subcarrier, and a pilot subcarrier.

[0042] In one possible implementation, the PPDU includes a plurality of OFDM symbols, and the selection of a guard interval value among the plurality of OFDM symbols is related to the second set of subcarriers.

[0043] In one possible implementation, the guard interval includes one or more of a cyclic prefix, cyclic suffix, and a fixed sequence.

[0044] In one possible implementation, at least one field before a data field included in the PPDU includes a predefined padding bit.

[0045] According to an eighth aspect, a communication apparatus is provided, including a processing unit and a transceiver unit.

[0046] The transceiver unit is configured to receive a Petition 870250086893, dated 09 / 25 / 2025, page 23 / 123 10 / 81 PPDU from a first device, where the PPDU includes a data subcarrier and a reference subcarrier. The reference subcarrier indicates an adjustment factor; the adjustment factor indicates a coefficient by which a portion or all of the data subcarriers in the data subcarriers are multiplied, and the coefficient is used to reduce a PAPR. The processing unit is configured to divide a portion or all of the data subcarriers by the coefficient to obtain an original value of the portion or all of the data subcarriers.

[0047] In one possible implementation, the reference subcarrier includes one or more pilot subcarriers, a data subcarrier, a null subcarrier, and a guard subcarrier.

[0048] According to a ninth aspect, a communication device is provided. The communication apparatus may be the communication apparatus according to any of the possible implementations of the third or fourth aspect in the preceding embodiments, or a chip disposed in the communication apparatus according to either of the third or fourth aspect. The communication apparatus includes a communication interface and a processor and optionally additionally includes a memory. The memory is configured to store a computer program, instructions, or data. The processor is coupled to the memory and the communication interface.When the processor reads the computer program, instructions, or data, the communication device is enabled to perform the method performed by the terminal device according to any of the possible implementations of the first aspect, or the communication device is enabled to perform the method performed by the network device according to any of the possible implementations of the second aspect.

[0049] It should be understood that the communication interface can be implemented using an antenna, a feed, a codec, Petition 870250086893, dated 09 / 25 / 2025, page 24 / 123 11 / 81 and similar in the communication device. Alternatively, if the communication device is a chip housed in a terminal device or a network device, the communication interface may be an input / output interface of the chip, for example, an input / output pin. The communication device may additionally include a transceiver, used by the communication device to communicate with another device.

[0050] According to a tenth aspect, an embodiment of this application provides a chip system. The chip system includes a processor, and may additionally include memory, configured to implement the method performed by the terminal device or the network device according to any of the possible implementations of the first to fourth aspects. In one possible implementation, the chip system additionally includes memory, configured to store program instructions and / or data. The chip system may include a chip or may include a chip and another discrete device.

[0051] According to an eleventh aspect, this application provides a computer-readable storage medium. The computer-readable storage medium stores a computer program or instructions. When the computer program or instructions are executed, the methods performed by the terminal device or network device in the preceding aspects are implemented.

[0052] According to a twelfth aspect, a computer program product is provided. The computer program product includes computer program code or instructions. When the computer program code or instructions are executed, the methods performed by the terminal device or network device in the previous aspects are performed.

[0053] According to a thirteenth aspect, a communication apparatus is provided. The communication apparatus includes units or modules configured to perform the methods in Petition 870250086893, dated 09 / 25 / 2025, p. 25 / 123 12 / 81 previous aspects.

[0054] According to a fourteenth aspect, a chip system is provided, and includes a logic circuit and an input / output interface. The logic circuit is configured to perform the method performed by the terminal device or the network device. The input / output interface is configured to communicate with another device.

[0055] According to a fifteenth aspect, a system is provided, including at least one network device and at least one terminal device.

[0056] For the beneficial effect of the third aspect through the fifteenth aspect and their implementations, see the descriptions of the beneficial effect of the method on the first aspect and the second aspect and their implementations. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] FIG. 1 shows a communication system according to one embodiment of this application; FIG. 2A is a diagram of a data subcarrier according to one embodiment of this application; FIG. 2B is a diagram of a free subcarrier according to one embodiment of this application; FIG. 3 is a diagram of a HE-SIG-B field; FIG. 4A is a diagram of a resource unit in a 20 MHz band according to an embodiment of this application; FIG. 4B is a diagram of a resource unit in a 40 MHz band according to an embodiment of this application; FIG. 4C is a diagram of a resource unit in an 80 MHz band according to an embodiment of this application; FIG. 5 is an example flowchart of a method for transmitting information according to one modality of this request; FIG. 6 is a diagram of a resource unit according to one of the modalities of this request; Petition 870250086893, dated 09 / 25 / 2025, page 26 / 123 13 / 81 FIG. 7A is a diagram of another free subcarrier according to an embodiment of this request; FIG. 7B is a diagram of another free subcarrier according to an embodiment of this request; FIG. 8A is a diagram of another free subcarrier according to an embodiment of this application; FIG. 8B is a diagram of another free subcarrier according to one embodiment of this request; FIG. 9 is a sample flowchart of another method of transmitting information according to one modality of this request; FIG. 10 is a diagram of a reference subcarrier according to an embodiment of this application; FIG. 11 is a diagram of a communication device according to one embodiment of this application; FIG. 12 is a diagram of another communication device according to an embodiment of this application; FIG. 13 is a diagram of another communication device according to an embodiment of this application; and FIG. 14 is a diagram of another communication device according to an embodiment of this application. DESCRIPTION OF THE MODALITIES

[0058] To facilitate the description of the technical solutions provided in the embodiments of this application, the technical terms in the embodiments of this application are described below.

[0059] 1. Free subcarrier: A free subcarrier is a portion of the subcarriers whose subcarrier values ​​can be altered to reduce a PAPR. Optionally, no data can be transmitted on the free subcarrier. Optionally, a sequence can be transmitted on a free subcarrier, and the sequence may be meaningless.

[0060] 2. Data subcarrier: A data subcarrier is a subcarrier used to transmit data. Petition 870250086893, dated 09 / 25 / 2025, p. 27 / 123 14 / 81

[0061] The embodiments of this application are applicable to a WLAN scenario, for example, applicable to the Institute of Electrical and Electronics Engineers (IEEE) 802.11 system standard, for example, 802.11a / b / g, 802.11n, 802.11ac, 802.11ax, a next generation of 802.11ax, for example, an 802.11be standard, Wi-Fi 7 or extremely high throughput (EHT), 802.11ad, 802.11ay, 802.11bf, a next generation of 802.11be, for example, Wi-Fi 8 or a next-generation Wi-Fi 8 standard. Alternatively, the embodiments of this application are applicable to a wireless local area network system, such as an Internet of Things (IoT) network. things, IoT) or a vehicle-to-everything network (V2X).Certainly, the modalities of this application are additionally applicable to another possible communication system, for example, an LTE system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a universal mobile telecommunications system (UMTS) or a worldwide interoperability for microwave access (WiMAX) communication system, a 5G communication system, and a future 6G communication system.

[0062] The following uses an example where the modalities of this request are applicable to a WLAN scenario. It should be understood that WLAN starts with the 802.11a / ge standard and goes through 802.11n, 802.11ac, 802.11ax, and 802.11be, which are currently under discussion. 802.11n can also be called high throughput (HT), 802.11ac can also be called very high throughput (VHT), 802.11ax can also be called high efficiency (HE) or Wi-Fi 6, and 802.11be can also be called Petition 870250086893, dated 09 / 25 / 2025, page 28 / 123 15 / 81 EHT or Wi-Fi 7, and standards prior to HT, for example, 802.11a / b / g, can be collectively referred to as non-high data rate (Non-HT).

[0063] FIG. 1 is a diagram of a WLAN network architecture to which one mode of this request applies. In FIG. 1, an example is used where the WLAN includes a wireless access point (AP) and two stations (STAs). An STA associated with the AP can receive a radio frame sent by the AP and can also send a radio frame to the AP. Furthermore, the modes of this request also apply to communication between APs. For example, APs can communicate with each other via a distributed system (DS). The modes of this request also apply to communication between STAs. It should be understood that the quantities of APs and STAs in FIG. 1 are only an example. There may be more or fewer APs and STAs.

[0064] An access point can be an access point through which a terminal device (e.g., a cell phone) accesses a wired (or wireless) network, and is primarily deployed at home, in a building, and on a campus, with a typical coverage radius ranging from tens to hundreds of meters. Of course, access points can alternatively be deployed outdoors. An access point is equivalent to a bridge connecting a wired network and a wireless network, and is primarily used to connect multiple wireless network clients and then connect the wireless network to an Ethernet connection. Specifically, an access point can be a terminal device (e.g., a cell phone) or a network device (e.g., a router) with a WiFi chip, or it can be a wireless C chip, a wireless sensor, a wireless communication terminal, or similar device that has an access point function. The access point can be a device that supports the 802.11be standard.Alternatively, the access point could be... Petition 870250086893, dated 09 / 25 / 2025, p. 29 / 123 16 / 81 is a device that supports a plurality of wireless local area network (WLAN) standards from the 802.11 family, such as 802.11ax, 802.11ac, 802.11ad, 802.11ay, 802.11n, 802.11g, 802.11b, 802.11ae, and a next-generation 802.11be.

[0065] The station can be a wireless communication chip, a wireless sensor, a wireless communication terminal, or similar, and can also be called a user. For example, the station can be a mobile phone that supports a Wi-Fi communication function, a tablet that supports a Wi-Fi communication function, a set-top box that supports a Wi-Fi communication function, a smart television that supports a Wi-Fi communication function, a smart wearable device that supports a Wi-Fi communication function, a vehicle-mounted communication device that supports a Wi-Fi communication function, or a computer that supports a Wi-Fi communication function. Optionally, the station can support the 802.11be standard. Alternatively, the station can support a plurality of wireless local area network (WLAN) standards from the 802.11 family, such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, 802.11ae and a next generation of 802.11be.

[0066] For example, the access point and station can be devices used in an internet of vehicles, internet of things nodes or sensors in an internet of things (IoT), smart cameras, smart remote controls, or smart water or electricity meters in a smart home, or sensors in a smart city.

[0067] The AP and STA in embodiments of this application may be an AP and an STA that are applicable to the IEEE 802.11 system standard. The AP is a device deployed in a wireless communication network that provides a wireless communication function to an STA associated with the AP. The AP may be used as a communication system hub and is generally a network-side product that Petition 870250086893, dated 09 / 25 / 2025, page 30 / 123 17 / 81 supports MAC and PHY in the 802.11 system standard; for example, it can be a communication device such as a base station, a router, a gateway, a repeater, a communication server, a switch, or a bridge. An AP can include a macro base station, a micro base station, a relay station, and similar devices in various forms. Here, for ease of description, the devices mentioned above are collectively referred to as APs. A STA is generally a terminal product that supports media access control (MAC) and a physical layer (PHY) in the 802.11 system standard, for example, a cell phone or a laptop.

[0068] In both low-frequency and high-frequency scenarios, the peak-to-average power ratio (PAPR) is an important factor affecting system performance. In an OFDM system, a time-domain transmission signal can be understood as the sum of all subcarriers obtained through the inverse fast Fourier transform (IFFT). In this case, compared to a single-carrier system, in an OFDM system, there is a probability that a transmission signal will have a high peak value and therefore a high PAPR. A high PAPR not only reduces the efficiency of a transmitter's power amplifier but also affects the signal-to-quantization noise ratio (SQNR) of a digital-to-analog converter and the signal-to-quantization noise ratio of an analog-to-digital converter.Therefore, reducing PAPR needs to be a focus of OFDM system design. Furthermore, at high frequencies, since the power amplifier exhibits a greater degree of non-linearity as the operating frequency increases, reducing PAPR becomes even more important.

[0069] Currently, there are some methods to reduce PAPR when a number of IFFT points remains unchanged. Petition 870250086893, dated 09 / 25 / 2025, page 31 / 123 18 / 81 In one possible case, the PAPR can be adjusted by means of phase rotation. For example, assume there is a frequency domain sequence a={a1, a2, a3, a4, a5, ..., a256}. In this method, the previous sequence can be divided into at least two parts, and phase rotation is performed on the subcarriers of each part. Since the phase rotation of all parts is inconsistent, the goal of adjusting and emitting the PAPR can be achieved. However, the previous method is designed based on a specific sequence. For example, a frequency domain sequence is repeated to a certain point, or a frequency domain sequence is known. For a completely random sequence, a predefined phase rotation adjustment parameter cannot achieve the goal of reducing the PAPR.

[0070] In this embodiment of this application, the PAPR can be reduced in order to carry a free subcarrier. For example, the value of a free subcarrier that does not carry data can be changed to reduce the PAPR. For example, originally, 256 subcarriers are to be emitted as a time-domain waveform via IFFT, and each subcarrier of the 256 points corresponds to a constellation point in a modulation scheme. The 256 constellation points can be represented as a frequency-domain sequence a={a1, a2, a3, a4, a5, ..., a256}, and a corresponding point of the output time-domain waveform can be represented as a time-domain sequence b={b1, b2, b3, b4, b5, ..., b256}. When the PAPR value is high, it can be adjusted by changing the values ​​of a portion of the subcarriers in the frequency-domain sequence a. This part of the subcarriers is called free subcarriers.

[0071] Specifically, the original frequency domain sequence a corresponds to 256 subcarriers, and can carry data represented by 256 constellation points, as shown Petition 870250086893, dated 09 / 25 / 2025, page 32 / 123 19 / 81 in FIG. 2A. Currently, a portion of the subcarriers, for example, 20 subcarriers, can be spared to not carry data, and are especially used for PAPR adjustment. The 20 subcarriers can be called free subcarriers, as shown in FIG. 2B. In this case, a sequence a that carries free subcarriers can be {a1, a2, a3, a4, ..., a236, c1, c2, c3, c4, ..., c20}, where c1 to c20 are free subcarriers. The free subcarriers correspond to different values ​​of subcarriers, so a PAPR of the time-domain sequence b obtained through IFFT can be reduced.

[0072] It should be noted that, in the previous example, the free subcarrier is located at the end of sequence a, but the position of the free subcarrier is not limited, and the free subcarrier may alternatively be located at another position in sequence a. For a given value of the free subcarrier, a PAPR can be reduced according to a simple random search method. For example, when a group of free subcarriers is not good, the value of the free subcarrier can be changed to recalculate whether the PAPR meets a pattern, and a sequence a corresponding to a minimum PAPR value obtained after a plurality of attempts is used for submission. Alternatively, a suitable value of the free subcarrier can be obtained based on a fixed part in sequence a that carries the free subcarrier.

[0073] However, a transmitter determines the position of the free subcarrier and the value of the free subcarrier. Although the PAPR can be reduced, for a receiver, the position of the free subcarrier cannot be determined, which increases the difficulty of data analysis by the receiver. Therefore, in this embodiment of this application, the transmitter can indicate the position of the free subcarrier to the receiver.

[0074] To facilitate the description of the technical solutions provided in the modalities of this application, various methods of resource unit allocation are described below. Petition 870250086893, dated 09 / 25 / 2025, page 33 / 123 20 / 81

[0075] Currently, a method for notifying user RU allocation is described in 802.11ax, and relates specifically to a resource unit allocation subfield (RU allocation subfield) in a common field in a high-efficiency signal field B (HE-SIG-B) in a multi-user PPDU (MU), and the resource unit allocation subfield may also be called the RU allocation subfield. For clarity of description, a structure of the HE-SIG-B is described with reference to FIG. 3.

[0076] The HE-SIG-B is divided into two parts: a common field and a user-specific field. The common field includes 1 to N resource unit allocation subfields (RU allocation subfields), and a center 26-tone resource unit indication field that exists when a bandwidth is greater than or equal to 80 MHz. The common field additionally includes a cyclic redundancy code (CRC) used for verification and a tail subfield used for cyclic decoding.

[0077] In the specific user field, there are from 1 to M user fields in a resource unit allocation sequence, and the M user fields are usually grouped in pairs. A CRC field and a final field are ported after every two user fields; but the last group of user fields may include 1 user field or 2 user fields, and the CRC field and the final field are not ported.

[0078] A content channel (CC) concept is introduced in 802.11ax. When the bandwidth of a data packet is only 20 MHz, HE-SIG-B includes only one content channel. The content channel includes a resource unit allocation subfield, and the resource unit allocation subfield indicates a resource unit in a 242-tone range in a data portion. The resource unit allocation subfield includes 8 bits, and all arrangements Petition 870250086893, dated 09 / 25 / 2025, page 34 / 123 21 / 81 and possible combinations of the resource unit within the RU of 242 tones are indicated by an index. Additionally, for a RU greater than or equal to 106 tones, the number of users performing multiple-input multiple-output (MIMO) transmission in the RU is indicated by an index. An index table for the resource unit allocation subfield is shown in Table 1: Table 1: Resource unit allocation subfield in 11ax Resource Unit Allocation Subfield (B7, B6, B5, B4, B3, B2, B1, B0) #1 #2 #3 #4 #5 #6 #7 #8 #9 Quantity 00000000 26 26 26 26 26 26 26 26 26 1 00000001 26 26 26 26 26 26 26 52 1 00000010 26 26 26 26 26 52 26 26 1 0000011 26 26 26 26 26 52 52 1 00000100 26 26 52 26 26 26 26 26 1 00000101 26 26 52 26 26 26 52 1 00000110 26 26 52 26 52 26 26 1 00000111 26 26 52 26 52 52 1 00001000 52 26 26 26 26 26 26 26 1 00001001 52 26 26 26 26 26 52 1 00001010 52 26 26 26 52 26 26 1 00001011 52 26 26 26 52 52 1 00001100 52 52 26 26 26 26 26 1 00001101 52 52 26 26 26 52 1 00001110 52 52 26 52 26 26 1 00001111 52 52 26 52 52 1 00010y2y1y0 52 52 106 8 00011y2y1y0 106 52 52 8 Petition 870250086893, dated 09 / 25 / 2025, page 35 / 123 22 / 81 Resource Unit Allocation Subfield (B7, B6, B5, B4, B3, B2, B1, B0) #1 #2 #3 #4 #5 #6 #7 #8 #9 Quantity 00100y2y1yc 26 26 26 26 26 106 8 00101y2y1yc 26 26 52 26 106 8 00110y2y1yc 52 26 26 26 106 8 00111y2y1yc 52 52 26 106 8 01000y2y1yc 106 26 26 26 26 26 8 01001y2y1yc 106 26 26 26 52 8 01010y2y1yc 106 26 52 26 26 8 01011y2y1yc 106 26 52 52 8 0110y1y0Z1Z0 106 106 16 01110000 52 52 52 52 1 01110001 Empty RU of 242 tons (with zero users) 1 01110010 Empty RU of 484 tons; contributes 0 user fields to a specific user field of a HE-SIG-B content channel corresponding to the RU allocation subfield (RU of 484 tons; contributes 0 user fields to the specific user field in the same HE-SIG-B content channel as this RU allocation subfield) 1 01110011 RU of 996 tons; contributes 0 user fields to a specific user field of a HE-SIG-B content channel corresponding to the subfield 1 Petition 870250086893, dated 09 / 25 / 2025, page 36 / 123 23 / 81 Resource Unit Allocation Subfield (B7, B6, B5, B4, B3, B2, B1, B0) #1 #2 #3 #4 #5 #6 #7 #8 #9 RU Allocation Quantity (RU of 996 tons; contributes 0 user fields to the specific user field in the same HE-SIG-B content channel as this RU allocation subfield) 011101x1X0 Reserved 4 01111γ2Y1Y0 Reserved 8 10y2y1y0Z2Z1Z0 106 26 106 64 11000y2y1y0 242 8 11001y2y1y0 484 8 11010y2y1y0 996 8 11011y2y1y0 Reserved 8 111x4x3x2x1x0 Reserved 32

[0079] In Table 1, each row can be referred to as an entry (entry) representing a RU configuration case. Most RU configurations shown in Table 1 are in a 242-tone range, and some RU configurations indicate that the RU is a 242-tone RU, a 484-tone RU, or a 996-tone RU. For example, in the first row of Table 1, i.e., when the RU allocation subfield is 00000000, nine 26-tone RUs are allocated in a corresponding 20 MHz range, and can correspond to a maximum of 1 user field. In the fifth row from the bottom of Table 1, i.e., when the RU allocation subfield is 11000y2y1y0, a 242-tone RU is allocated in a corresponding 20 MHz range and can correspond to a maximum of 8 Petition 870250086893, dated 09 / 25 / 2025, p. 37 / 123 24 / 81 user fields. A value of y2yiyo can indicate a number of matching user fields. For example, a value of 000 of y2y1y0 indicates 1 matching user field and a value of oo1 of y2y1yo indicates 2 matching user fields. The rest can be deduced by analogy.

[0080] Each 8-bit resource unit allocation subfield in Table 1 reports a resource unit allocation status in a 20 MHz range of a content channel corresponding to the resource unit allocation subfield. It can be understood that 20 MHz has one resource unit allocation subfield, 40 MHz has two resource unit allocation subfields, 80 MHz has four resource unit allocation subfields, and 160 MHz has eight resource unit allocation subfields. The rest can be deduced by analogy.

[0081] It should be noted that a sequence in which a user appears in the specific user field is consistent with a sequence of RUs obtained by splitting into a corresponding resource unit allocation subfield. The user can identify, by reading an STA identity (ID) in the user field, whether the user field belongs to the user. With reference to a position in which the user field appears and a corresponding resource unit allocation subfield, the user can know the user's RU allocation status and whether MU MIMO needs to be performed.

[0082] To effectively multiplex resources in 802.11ax, content in HE-SIG-B is represented using a CC1 and a CC2 when the bandwidth is greater than or equal to 40 MHz. When the bandwidth of a data packet is 40 MHz, there are two content channels: CC1 and CC2. CC1 includes a resource unit allocation subfield indicating a first RU of 242 tones and a corresponding user-specific field. CC2 includes a resource unit allocation subfield indicating a second RU of 242 tones and a user-specific field. Petition 870250086893, dated 09 / 25 / 2025, page 38 / 123 25 / 81 corresponding, as shown in FIG. 3.

[0083] When the bandwidth of a data packet is 80 MHz, there are four content channels in total. The resource unit allocation subfield is indicated in the four channels in ascending order of frequencies in a CC1, CC2, CC1, and CC2 structure. CC1 includes resource unit allocation subfields indicating the first 242-tone RU and the third 242-tone RU, and corresponding user-specific fields. CC2 includes resource unit subfields indicating the second 242-tone RU and the fourth 242-tone RU, and corresponding user-specific fields. The grouping of arrays in the case of higher bandwidth is similar to this, and the details are not described again.

[0084] In conclusion, it can be learned that CC1 and CC2 each display a portion of the resource unit allocation subfield content. By reading the information in CC1 and CC2, a user can fully understand the allocation status of a corresponding RU for each 20 MHz. However, it should be noted that although a plurality of RU allocation modes is defined for the resource unit allocation subfield in 802.11ax, the allocation of a plurality of RUs to the same user is not supported.

[0085] The resource allocation method of 11be (EHT) is similar to that of 11ax, but 11be supports a higher bandwidth of 320 MHz and can support an MRU, i.e., a larger RU or a plurality of RUs can be allocated to a user. One method to support the former change is not complex, i.e., the original 8-bit resource unit allocation subfield is extended to the 9-bit resource unit allocation subfield, as shown in Table 2. Petition 870250086893, dated 09 / 25 / 2025, page 39 / 123 26 / 81 Table 2: Resource unit allocation subfield in 11be Resource Unit Allocation Subfield (B8, B7, B6, B5, B4, B3, B2, B1, B0) #1 #2 #3 #4 #5 #6 #7 #8 #9 Quantity 00000000 26 26 26 26 26 26 26 26 26 1 00000001 26 26 26 26 26 26 26 52 1 00000010 26 26 26 26 26 52 26 26 1 00000011 26 26 26 26 26 52 52 1 00000100 26 26 52 26 26 26 26 26 1 00000101 26 26 52 26 26 26 52 1 00000110 26 26 52 26 52 26 26 1 00000111 26 26 52 26 52 52 1 00001000 52 26 26 26 26 26 26 26 00001000 00001001 52 26 26 26 26 26 52 1 00001010 52 26 26 26 52 26 26 1 00001011 52 26 26 26 52 52 1 00001100 52 52 26 26 26 26 26 1 00001101 52 52 26 26 26 52 1 00001110 52 52 26 52 26 26 1 00001111 52 52 26 52 52 1 000010000 26 26 26 26 26 106 1 000010001 26 26 52 26 106 1 000010010 52 26 26 26 106 1 000010011 52 52 26 106 1 000010100 106 26 26 26 26 26 1 000010101 106 26 26 26 52 1 000010110 106 26 52 26 26 1 000010111 106 26 52 52 1 000011000 52 52 52 52 1 Petition 870250086893, dated 09 / 25 / 2025, page 40 / 123 27 / 81 Resource Unit Allocation Subfield (B8, B7, B6, B5, B4, B3, B2, B1, B0) #1 #2 #3 #4 #5 #6 #7 #8 #9 Quantity 000011001 106 26 106 1 000011010 Perforated 242-tone RU 1 000011011 Empty 242-tone RU 1 000011100 242-tone RU; allocated, but contributes 0 user fields to a user-specific field of an EHT-SIG content channel corresponding to the RU allocation subfield (242-tone RU; allocated, but contributes 0 user fields to the user-specific field in the same EHT-SIG content channel as this RU allocation subfield) 1 Petition 870250086893, dated 09 / 25 / 2025, page 41 / 123 28 / 81 Resource Unit Allocation Subfield (B8, B7, B6, B5, B4, B3, B2, B1, B0) #1 #2 #3 #4 #5 #6 #7 #8 #9 Quantity 000011101 RU of 484 tons; allocated, but contributes 0 user fields to a user-specific field of an EHT-SIGB content channel corresponding to the RU allocation subfield (RU of 484 tons; allocated, but contributes 0 user fields to the user-specific field in the same EHTSIG content channel as this RU allocation subfield) 1 000011110 RU of 996 tons; Allocated, but contributes 0 user fields to a specific user field of an EHT-SIGB content channel corresponding to the RU allocation subfield (996-ton RU; allocated, but contributes 0 user fields to the specific user field in the same EHT-SIGB content channel as this RU allocation subfield) 1 000011111 Validate 1 000100000 26 26 26 26 26 52 + 26 26 1 000100001 26 26 52 26 52 + 26 26 1 Petition 870250086893, dated 09 / 25 / 2025, p. 42 / 123 29 / 81 Resource Unit Allocation Subfield (B8, B7, B6, B5, B4, B3, B2, B1, B0) #1 #2 #3 #4 #5 #6 #7 #8 #9 Quantity 000100011 52 52 26 52 + 26 26 1 000100100 26 52 + 26 26 26 26 26 26 1 000100101 26 52 + 26 26 26 26 52 1 000100110 26 52 + 26 26 52 26 26 1 000100111 26 52 + 26 26 52 52 1 000101000 26 26 26 26 106+26 1 000101001 26 26 52 106+26 1 000101010 52 26 26 106+26 1 000101011 52 52 106+26 1 000101100 106+26 26 26 26 26 1 000101101 106+26 26 26 52 1 000101110 106+26 52 26 26 1 000101111 106+26 52 52 1 000110000 106+26 106 1 000110001 106+26 52 + 26 26 1 000110010 106 106+26 1 000110011 26 52 + 26 106+26 1 000110100 106 26 52 + 26 26 1 000110101 26 52 + 26 26 106 1 000110110 26 52 + 26 26 52 + 26 26 1 000110111 52 52 + 26 52 52 1 000111000- 000111111 Validate 8 001000 y2y1y0 242 8 001001 y2y1y0 484 8 001010 y2y1y0 996 8 Petition 870250086893, dated 09 / 25 / 2025, p. 43 / 123 30 / 81 Resource Unit Allocation Subfield (B8, B7, B6, B5, B4, B3, B2, B1, B0) #1 #2 #3 #4 #5 #6 #7 #8 #9 Quantity 001011 y2y1y0 2*996 8 001100 y2y1y0 Standard MRU [ (Standard MRU 484) gap-242 o [gap- -242-484 242]-242- 8 001101 y2y1yc Standard MRU 242-[gap-242]-484 (Standard MRU 242-[gap-242]484) 8 001110 y2y1yc Standard MRU 484-[gap-242]-242 (Standard MRU 484-[gap-242]242) 8 001111 y2y1yc MRU of pattern 484-242-[gap-242] (MRU of pattern 484-242-[gap242]) 8 010000 y2y1yc MRU of pattern [ (MRU of pattern 996) gap-484 o [gap- -484-996 484]-484- 8 010001 y2y1yc MRU of pattern 484-[gap-484]-996 (MRU of pattern 484-[gap-484]996) 8 010010 y2y1y0 MRU of pattern 996-[gap-484]-484 (MRU of pattern 996-[gap-484]484) 8 010011 y2y1y0 MRU of pattern 996-484-[gap-484] (MRU of pattern 996-484-[gap-484]) 8 Petition 870250086893, dated 09 / 25 / 2025, page 44 / 123 31 / 81 Resource Unit Allocation Subfield (B8, B7, B6, B5, B4, B3, B2, B1, B0) #1 #2 #3 #4 #5 #6 #7 #8 #9 Quantity 010100 y2y1yc Pattern MRU [gap-996]-996996-996 (Pattern MRU [gap-996]-996996-996) 8 010101 y2y1yc Pattern MRU 996-[gap-996]996-996 (Pattern MRU 996-[gap-996]996-996) 8 010110 y2y1y0 Pattern MRU 996-996-[gap-996]-996 (Pattern MRU 996-996-[gap-996] 996]-996) 8 010111 y2y1y0 MRU of pattern 996-996-996-[gap996] (MRU of pattern 996-996-996-[gap-996]) 8 011000 y2y1y0 MRU of pattern [gap-484]-484996-996-996 (MRU of pattern [gap-484]-484996-996-996) 8 011001 y2y1y0 MRU of pattern 484-[gap-484]996-996-996 (MRU of pattern 484-[gap-484]996-996-996) 8 Petition 870250086893, dated 09 / 25 / 2025, page 45 / 123 32 / 81 Resource Unit Allocation Subfield (B8, B7, B6, B5, B4, B3, B2, B1, B0) #1 #2 #3 #4 #5 #6 #7 #8 #9 Quantity 011010 y2y1yc MRU of pattern 996-[gap-484]484-996-996 (MRU of pattern 996-[gap-484]484-996-996) 8 011011 y2y1yc MRU of pattern 996-484-[gap-484]-996-996 (MRU of pattern 996-484-[gap-484]-996-996) 8 011100 y2y1y0 MRU of pattern 996-996-[gap484]-484-996 (MRU of pattern 996-996-[gap484]-484-996) 8 011101 y2y1y0 996-996-484-[gap-484]-996 (MRU of pattern 996-996-484-[gap-484]-996) 8 011110 y2y1y0 MRU of pattern 996-996-996-[gap484]-484 (MRU of pattern 996-996-996-[gap-484]-484) 8 011111 y2y1y0 MRU of pattern 996-996-996-484[gap-484] (MRU of pattern 996-996-996-484[gap-484]) 8 100000 y2y1y0 MRU of pattern [gap-484]-484996-996 (MRU of pattern [gap-484]-484996-996) 8 Petition 870250086893, dated 09 / 25 / 2025, page 46 / 123 33 / 81 Resource Unit Allocation Subfield (B8, B7, B6, B5, B4, B3, B2, B1, B0) #1 #2 #3 #4 #5 #6 #7 #8 #9 Quantity 100001 y2y1y0 MRU of pattern 484-[gap-484]996-996 (MRU of pattern 484-[gap-484]996-996) 8 100010 y2y1y0 MRU of pattern 996-[gap-484]484-996 (MRU of pattern 996-[gap-484]484-996) 8 100011 y2y1yc MRU of pattern 996-484-[gap-484]-996 (MRU of pattern 996-484-[gap484]-996) 8 100100 y2y1yc MRU of pattern 996-996-[gap484]-484 (MRU of pattern 996-996-[gap484]-484) 8 100101 y2y1yc MRU of pattern 996-996-484-[gap484] (MRU of pattern 996-996-484-[gap-484]) 8 100110 y2y1y0- 111111 y2y1yc Reserved 26*8

[0086] Similarly, each row in Table 2 can be referred to as an entry representing a RU configuration case. Due to the bit increase, more entries can be used to represent the allocation of more RUs or MRUs. For example, an entry 001101y2y1y0 can be used to allocate an MRU of Petition 870250086893, dated 09 / 25 / 2025, page 47 / 123 34 / 81 242+Gap+484. The entry indicates that the first 20 MHz, the third 20 MHz, and the fourth 20 MHz in 80 MHz form a 242+484 tone MRU and are allocated to a corresponding user. Similar to the HE allocation method, the MRU can be represented by one or more resource unit allocation subfields. Likewise, each resource unit allocation subfield can correspond to 0 for a plurality of user fields.

[0087] In addition, in the drive frame, a resource unit allocation subfield in the user information field can be used to allocate a resource unit to a specific user.

[0088] The following describes tone plans at different data packet bandwidths.

[0089] 1. As shown in FIG. 4A, when a bandwidth is 20 MHz, the entire bandwidth may include an entire 242-tone RU, or it may include various combinations of a 26-tone RU, a 52-tone RU, and a 106-tone RU. In addition to the RUs for data transmission, some guard subcarriers, null subcarriers, or direct current (DC) subcarriers are also included.

[0090] 2. As shown in FIG. 4B, when a bandwidth is 40 MHz, the entire bandwidth is approximately equivalent to replicating a 20 MHz tone plane, and the entire bandwidth may include an entire RU of 484 tones or various combinations of a RU of 26 tones, a RU of 52 tones, a RU of 106 tones, and a RU of 242 tones.

[0091] 3. As shown in FIG. 4C, when the bandwidth is 80 MHz, the entire bandwidth includes four feature units in RU units of 242 tones. There is a central RU of 26 tones, including two 13-tone subunits in the middle of the entire bandwidth. The entire bandwidth may include an entire RU of 996 tones or may include various combinations of a Petition 870250086893, dated 09 / 25 / 2025, p. 48 / 123 35 / 81 A 26-ton RU, a 52-ton RU, a 106-ton RU, a 242-ton RU, and a 484-ton RU.

[0092] 4. When a bandwidth is 160 MHz or 80 MHz+80 MHz, the entire bandwidth can be considered as a replication of a tone plan of two 80 MHz bandwidths. The entire bandwidth may include an entire RU of 2*996 tones, or it may include various combinations of a RU of 26 tones, a RU of 52 tones, a RU of 106 tones, a RU of 242 tones, a RU of 484 tones, and a RU of 996 tones.

[0093] The entire tone plan above is in 242-tone RU units. The left side of the figure can be considered the lowest frequency, and the right side of the figure can be considered the highest frequency. From left to right, 242-tone RUs can be numbered as 1a, 2a, ..., 8a. It should be noted that, in a data field, the eight 242-tone RUs correspond one-to-one to eight 20 MHz channels in ascending order of frequencies, but due to the existence of the central 26-tone RU, the frequencies do not completely overlap.

[0094] The following describes, with reference to FIG. 5, a method of transmitting information provided in an embodiment of this application. The method may include the following operations. In the embodiment shown in FIG. 5, a first device may be a STA or an AP. Similarly, a second device may be a STA or an AP. For example, when the first device is a STA, the second device may be an AP. When the first device is an AP, the second device may be a STA. For another example, when the first device is a STA, the second device may also be a STA; or when the first device is an AP, the second device may also be an AP.

[0095] S501: The first device generates a PPDU.

[0096] In a possible implementation, the PPDU may include resource unit allocation information. Resource unit allocation information may indicate one or more units. Petition 870250086893, dated 09 / 25 / 2025, page 49 / 123 36 / 81 of resources. Furthermore, the resource unit allocation information additionally indicates that one or more resource units include a first set of subcarriers and a second set of subcarriers. It can be understood that the first set of subcarriers and the second set of subcarriers do not overlap. For example, a frequency corresponding to the first set of subcarriers does not overlap with a frequency corresponding to the second set of subcarriers.

[0097] It should be noted that the appeal unit mentioned in this modality of this request can be understood as a RU or an MRU. For example, a unit of appeal can be a RU or an MRU. For another example, a plurality of units of appeal can be a plurality of RUs or a plurality of MRUs. An MRU can include a plurality of RUs.

[0098] It can be understood that the first set of subcarriers in this modality of this request can be understood as a data subcarrier, that is, a subcarrier used to carry data. The second set of subcarriers can be understood as the previous free subcarriers, that is, subcarriers used to reduce a PAPR.

[0099] S502: The first device sends PPDU to the second device.

[00100] Correspondingly, the second device receives the PPDU.

[00101] A PPDU may include the first data sent in the first set of subcarriers and a sequence sent in the second set of subcarriers. Optionally, the preceding sequence may be a predefined sequence, or it may be a random sequence. Optionally, the sequence may not carry information. In other words, the sequence may be a meaningless sequence.

[00102] Based on this solution, in this modality of this Petition 870250086893, dated 09 / 25 / 2025, page 50 / 123 37 / 81 request, the PAPR can be reduced through the free subcarrier. Furthermore, the first device can indicate a position of the free subcarrier to the second device, so that the complexity of data analysis by the second device can be reduced.

[00103] In one possible implementation, the resource unit allocation information in S501 may indicate that the allocated resource unit includes the second set of subcarriers when the resource unit is allocated. In another possible implementation, the resource unit allocation information in S501 may alternatively be carried in a RU allocation subfield, or it may be carried in a punctured channel information field. The following uses case 1 and case 2 separately for description.

[00104] Case 1: Resource unit allocation information is carried in the RU allocation subfield. In this case, based on the fact that RU or MRU notification is supported by the RU allocation subfield, the RU allocation subfield may additionally indicate that the allocated RU or MRU includes the second set of subcarriers. Specific descriptions are provided below through different examples.

[00105] Example 1: The RU allocation subfield can indicate that all subcarriers included in an RU or an MRU are second subcarriers, or the RU allocation subfield can indicate that an RU or an MRU includes only the second set of subcarriers.

[00106] It should be noted that a RU or an MRU includes only the second set of subcarriers for a non-pilot subcarrier. The preceding content may be understood as if a RU or an MRU did not include the first subcarrier. The details are not described below. Similarly, in this embodiment of this application, the fact that a RU or an MRU includes only the first Petition 870250086893, dated 09 / 25 / 2025, p. 51 / 123 38 / 81 subcarrier set also applies to a non-pilot subcarrier. It can be understood that a RU or an MRU does not include the second subcarrier.

[00107] In example 1, a newly added entry may indicate that an MRU or an RU includes only the second set of subcarriers, or an original entry may indicate that an MRU or an RU includes only the second set of subcarriers. Method 1 and Method 2 are described separately below.

[00108] Method 1: In method 1, an entry can be newly added to the RU allocation subfield, and the newly added entry can notify, when indicating the RU or MRU, that the RU or MRU includes only the second set of subcarriers.

[00109] For example, an entry may be recently added to Table 1 or Table 2. The newly added entry may indicate that all subcarriers included in the RU or MRU are second subcarriers and correspond to 0 user fields. The newly added entry indicates that the allocated RU or MRU includes only the second set of subcarriers, i.e., the newly added entry indicates that the allocated RU or MRU is not used for data transmission. Therefore, in this possible case, the second device may determine, based on the newly added entry, that the allocated RU or MRU includes only the second set of subcarriers.

[00110] In this mode of this request, the newly added entry can be 8 bits that are not used and are newly added to Table 1. For example, the newly added entry can include one or more of the following: 11011y2y1y0 or 111x4x3x2x1x0. Values ​​of X4, X3, X2, xi, xo, y2, y1, and yo are 0 or 1.

[00111] Alternatively, the newly added entry may have 9 unused bits that have been added. Petition 870250086893, dated 09 / 25 / 2025, p. 52 / 123 39 / 81 recently added to Table 2. For example, the newly added entry may include one or more of the following: 100110y2y1y0-111111y2y1y0. Values ​​of y2, y1, and y0 are 0 or 1.

[00112] Optionally, the newly added entry can extend 9 bits in table 2 to more bits, such as 10 bits and 11 bits.

[00113] It can be understood that the value of the newly added entry shown above is used only as an example. The value of the newly added entry is not limited in the modalities of this order. The details are not described below.

[00114] The following example uses an 80 MHz PPDU for description. There are four corresponding RU allocation subfields in total. For example, a RU allocation subfield corresponding to a CC1 might include a newly added entry 11011000, and the entry might indicate that an allocated 242-tone RU includes only the second set of subcarriers and corresponds to 0 user fields. Another RU allocation subfield corresponding to CC1 might include an original entry 11001000, and the entry indicates that an allocated 484-tone RU corresponds to 1 user field. Two RU allocation subfields corresponding to a CC2 include respectively an original entry 11000000 and an original entry 11001000. The entry 11000000 indicates that the allocated RU of 242 tons corresponds to the field of 1 user, and the entry 11001000 indicates that the allocated RU of 484 tons corresponds to the field of 1 user. The above content can be shown in Table 3. Table 3: Example in which the RU allocation subfield indicates that the resource unit includes only the second set of subcarriers. Petition 870250086893, dated 09 / 25 / 2025, page 53 / 123 40 / 81 Input indication content corresponding to the RU allocation subfield Input indication content corresponding to the RU allocation subfield Content channel 1 (CC1) 242 tones (0 user fields, second subcarrier) 484 tones (1 user field) Content channel 2 (CC2) 242 tones (1 user field) 484 tones (1 user field)

[00115] The resource unit shown in FIG. 6 is allocated in Table 3. The first 242-tone RU in Table 3 is allocated by a newly added entry. In this case, the first 242-tone RU includes only the second set of subcarriers. The second 242-tone RU and the 484-tone RU are allocated by means of original entries. In this case, the second 242-tone RU and the 484-tone RU do not include the second subcarrier. The second 242-tone RU corresponds to 1 user field, and the 484-tone RU corresponds to 2 user fields.

[00116] Next, an 80 MHz PPDU is used as an example. There are four corresponding RU allocation subfields in total. For example, the RU allocation subfield corresponding to CC1 may include a newly added entry 100110000, and the entry may indicate that the allocated 242-tone+Gap+484-tone MRU includes only the second set of subcarriers and corresponds to 0 user fields. Another RU allocation subfield corresponding to CC1 may include the newly added entry 100110000. Two RU allocation subfields corresponding to CC2 include respectively an original entry 001000000 and the newly added entry 100110000. The entry 001000000 indicates that the allocated 242-tone RU corresponds to 1 user field. The above content can be shown in Table 4. Petition 870250086893, dated 09 / 25 / 2025, p. 54 / 123 41 / 81 Table 4: Example in which the RU allocation subfield indicates that the resource unit includes only the second subcarrier. Input indication content corresponding to the RU allocation subfield Input indication content corresponding to the RU allocation subfield Content channel 1 (CC1) 242 tons+Gap+484 tons (0 user fields, second subcarrier) 242 tons+Gap+484 tons (0 user fields, second subcarrier) Content channel 2 (CC2) 242 tons (1 user field) 242 tons+Gap+484 tons (0 user fields, second subcarrier)

[00117] The resource unit shown in FIG. 6 is allocated in Table 4. In Table 4, the RU of 242 tones+Gap+484 tones is allocated through a newly added entry. In this case, the RU of 242 tones+Gap+484 tones includes only the second set of subcarriers. The second RU of 242 tones is allocated through an original entry. In this case, the second RU of 242 tones does not include the second set of subcarriers. The second RU of 242 tones corresponds to 1 user field.

[00118] It should be noted that currently, the sizes supported by an MRU larger than 242 tones are 484+242, 996+484, 2*996+484, 3*996+484, 3*996, 242+484+996, and similar sizes. These MRUs can indicate, similarly to the previously added entry, that the MRUs include only the second set of subcarriers, and more MRUs can also be supported in the previous manner. Furthermore, in fact, only one RU of 242 tones, 0 user fields, including only the second set of subcarriers needs to be established to represent multiple cases of MRUs larger than 242 tones. For an RU smaller than Petition 870250086893, dated 09 / 25 / 2025, p. 55 / 123 42 / 81 242 tones, a newly added entry may indicate RU allocation in a 20 MHz channel corresponding to the RU allocation subfield, and some RUs include only the second set of subcarriers. In this case, the free subcarrier RU cannot be tracked by the user field.

[00119] Method 2: In method 2, an original entry may indicate that a RU or an MRU includes only the second set of subcarriers.

[00120] In one possible case, a user field identifier corresponding to an original entry may be a special value, to indicate that a RU or MRU allocated to the original entry includes only the second set of subcarriers. In this case, an original match between the user field and the RU allocation subfield is not altered, but a special user field identifier is set to indicate that the RU or MRU includes only the second set of subcarriers. In this possible case, the second device may determine that the RU or MRU allocated to the entry corresponding to the user field whose identifier is the special value includes only the second set of subcarriers.

[00121] For example, the special value could be 2046, all 0s, all 1s, or something similar. This is not specifically limited in this request. For example, the special value is 2046. Assume that an original entry 11000000 in Table 1 indicates a 242-tone RU, the 242-tone RU corresponds to a user field, and a user field identifier is 2046. In this case, the 242-tone RU includes only the second set of subcarriers. For another example, assume that an original entry 001100000 in table 2 indicates a MRU of [gap 242]+242+484 tons, the MRU [gap 242]+242+4484 tons corresponds to a user field and a user field identifier is 2046. In this case, the MRU of 242 tons+996 tons includes only the second set of subcarriers. Petition 870250086893, dated 09 / 25 / 2025, p. 56 / 123 43 / 81

[00122] Based on the previous solution, when the first device indicates the available RU or MRU to the second device via the RU allocation subfield, the first device can indicate to the second device, via the user field identifier being the special value, that a RU or MRU includes only the second subcarrier. In this way, the complexity of data analysis by the second device is reduced, while the PAPR is reduced.

[00123] In another possible case, based on the fact that the original entry indicates the RU or MRU, the first indication information may be added to indicate that the RU or MRU allocated through the original entry includes only the second set of subcarriers.

[00124] For example, the first device can send the initial indication information to the second device, where the initial indication information can indicate that a RU or MRU allocated to the second device includes only the second set of subcarriers. Optionally, the initial indication information can be ported to the PPDU for sending. For example, the initial indication information can be ported to a common field or a user-specific field. For example, the initial indication information can be ported to a reserved field or a newly added field in the common field. For another example, the initial indication information can be ported to a reserved field or a newly added field in the user-specific field. Alternatively, the initial indication information can be sent separately.For example, the initial referral information can be sent after the first device allocates a RU or an MRU to the second device. This is not specifically limited in this request.

[00125] It should be noted that one form of information from the initial indication is not specifically limited in this application. Petition 870250086893, dated 09 / 25 / 2025, p. 57 / 123 44 / 81 For example, the first indication information can be a 1-bit piece of information. When a value of the first indication information is 0, this indicates that the RU or MRU does not include the second set of subcarriers; or when a value of the first indication information is 1, this indicates that the RU or MRU includes only the second set of subcarriers. Conversely, when a value of the first indication information is 1, this indicates that the RU or MRU does not include the second set of subcarriers; or when a value of the first indication information is 0, this indicates that the RU or MRU includes only the second set of subcarriers.

[00126] Based on the previous solution, when the first device indicates the available RU or MRU to the second device via the RU allocation subfield, the first device can indicate to the second device, based on the initial indication information, that a RU or MRU includes only the second subcarrier.

[00127] Example 2: The RU allocation subfield can indicate that a resource unit includes the first set of subcarriers and the second set of subcarriers. The solution provided in example 2 can be understood as the RU allocation subfield indicating that a RU includes the first set of subcarriers and the second set of subcarriers, or the RU allocation subfield indicating that an MRU includes the first set of subcarriers and the second set of subcarriers.

[00128] Similarly, in example 2, a newly added entry may indicate that an MRU or an RU includes the first set of subcarriers and the second set of subcarriers, or an original entry may indicate that an MRU or an RU includes the first set of subcarriers and the second set of subcarriers. Method 3 and Method 4 are described separately below. Petition 870250086893, dated 09 / 25 / 2025, p. 58 / 123 45 / 81

[00129] Method 3: In method 3, an entry for the RU allocation subfield can be added. The newly added entry can indicate, when specifying RU or MRU, that RU or MRU includes the first set of subcarriers and the second set of subcarriers.

[00130] For example, an entry may be recently added to table 1 or table 2, and the recently added entry may indicate that RU or MRU includes the first set of subcarriers and the second set of subcarriers.

[00131] The following example uses an 80 MHz PPDU for description. There are four corresponding RU allocation subfields in total. For example, the RU allocation subfield corresponding to CC1 may include a newly added entry 111111000, and the entry may indicate that the allocated 242-tone+Gap+242-tone MRU includes the first set of subcarriers and the second set of subcarriers, and corresponds to 1 user field. Another RU allocation subfield corresponding to CC1 includes a newly added entry 111111000. Two RU allocation subfields corresponding to CC2 include respectively an original entry 001000000 and a newly added entry 111111000. The entry 001000000 indicates that the allocated 242-tone RU corresponds to 1 user field. CC1 and CC2 can be described as shown in Table 5. Table 5: Example in which the RU allocation subfield indicates that the resource unit includes the first subcarrier and the second subcarrier. Input indication content corresponding to the RU allocation subfield. Input indication content corresponding to the RU allocation subfield. Content channel 1: 242 tones + Gap 242 + 484 tones (first) 242 tones + Gap 242 + 484 tones (first) Petition 870250086893, dated 09 / 25 / 2025, page 59 / 123 46 / 81 Content of input indication corresponding to the RU allocation subfield Content of input indication corresponding to the RU allocation subfield (CC1) subcarrier+second subcarrier) (1 user field) subcarrier+second subcarrier) (1 user field) Content channel 2 (CC2) 242 tones (first subcarrier) (1 user field) 242 tones+Gap 242+484 tones (first subcarrier+second subcarrier) (0 user fields)

[00132] The resource unit shown in FIG. 6 is allocated in Table 5. In Table 5, 242 tons+Gap 242+484 tons is allocated through a newly added entry. In this case, 242 tons+Gap 242+484 tons includes the first set of subcarriers and the second set of subcarriers. The RU of 242 tons is allocated through an original entry. Thus, the RU of 242 tons includes only the first subcarrier, and the RU of 242 tons corresponds to 1 user field.

[00133] It should be noted that the newly added entry in method 3 may indicate that RU or MRU includes the first set of subcarriers and the second set of subcarriers. In this case, one position of the first set of subcarriers and one position of the second set of subcarriers may be pre-agreed, for example, they may be predefined in a protocol or preconfigured.

[00134] For example, the subcarriers included in a RU that includes the fewest number of subcarriers and that is in the MRU are the second set of subcarriers. The 242-ton + 242-ton gap + 484-ton gap are used as an example. The subcarriers included in the 242-ton RU are the second set of subcarriers. In another example, when the feature unit is an MRU, the Petition 870250086893, dated 09 / 25 / 2025, p. 60 / 123 47 / 81 subcarriers included in a RU that has the lowest frequency and is included in the MRU are the second set of subcarriers. An MRU of 3*996 tones is used as an example. The subcarriers included in a RU with the lowest frequency, that is, the first RU of 996 tones, are the second set of subcarriers.

[00135] In another example, subcarriers in fixed positions in the RU or MRU, for example, X subcarriers with low frequencies, are the second set of subcarriers. A 26-tone RU is used as an example. The X subcarriers with low frequencies are the second set of subcarriers. It can be understood that X can be predefined, can be specified in a protocol, or can be preconfigured. This is not specifically limited in this request.

[00136] Optionally, when the sizes of the RUs included in the MRU are the same, subcarriers in fixed positions can be used as the second set of subcarriers. For example, subcarriers included in a RU with the lowest frequency are used as the second set of subcarriers. A 3*996 tone MRU is used as an example. The subcarriers included in a 996 tone RU with the lowest frequency are the second set of subcarriers.

[00137] In one example, the newly added entry in method 3 can alternatively indicate which part of the subcarriers in the allocated RU or MRU are the second subcarriers and which part of the subcarriers are the first subcarriers.

[00138] The following example uses an 80 MHz PPDU for description. There are four corresponding RU allocation subfields in total. For example, the RU allocation subfield corresponding to CC1 may include a newly added entry 111111001, and the entry may indicate that the allocated 242-tone+Gap+242-tone MRU includes the first set of subcarriers and the second set of subcarriers, and Petition 870250086893, dated 09 / 25 / 2025, p. 61 / 123 48 / 81 corresponds to 1 user field. Another RU allocation subfield corresponding to CC1 includes a newly added entry 111111001. Two RU allocation subfields corresponding to CC2 include respectively an original entry 001000000 and a newly added entry 111111001. The entry 001000000 indicates that the allocated RU of 242 tons corresponds to 1 user field. CC1 and CC2 can be described as shown in Table 6. Table 6: Example in which the RU allocation subfield indicates that the resource unit includes the first subcarrier and the second subcarrier. Input indication content corresponding to the RU allocation subfield Input indication content corresponding to the RU allocation subfield Content channel 1 (CC1) 242 tones (second subcarrier) + Gap 242 + 484 tones (first subcarrier) (1 user field) 242 tones (second subcarrier) + Gap 242 + 484 tones (first subcarrier) (1 user field) Content channel 2 (CC2) 242 tones (first subcarrier) (1 user field) 242 tones (second subcarrier) + Gap 242 + 484 tones (first subcarrier) (0 user fields)

[00139] The resource unit shown in FIG. 6 is allocated in Table 6. In Table 6, 242 tones + Gap 242 + 484 tones is allocated by means of a newly added entry. In this case, 242 tones + Gap 242 + 484 tones includes the first set of subcarriers and the second set of subcarriers. The newly added entry indicates that the RU of 242 tones in the MRU of 242 tones + Gap 242 + 484 tones includes only the second set of Petition 870250086893, dated 09 / 25 / 2025, p. 62 / 123 49 / 81 subcarriers, and the 484-tone RU in the 242-tone MRU + Gap 242 + 484 tones includes only the first set of subcarriers. Furthermore, the second 242-tone RU in FIG. 6 is allocated via an original entry. In this case, the second 242-tone RU includes only the first subcarrier, and the 242-tone RU corresponds to 1 user field.

[00140] Based on the previous solution, when the first device indicates the available RU or MRU to the second device via the RU allocation subfield, the first device can notify the second device that the RU or MRU includes the first set of subcarriers and the second set of subcarriers.

[00141] Method 4: In example 2, an original entry might indicate that a RU or an MRU includes the first set of subcarriers and the second set of subcarriers.

[00142] In one possible case, based on the fact that the original entry indicates the RU or MRU, secondary indication information may be added to indicate that the RU or MRU allocated via the original entry includes the first set of subcarriers and the second set of subcarriers. For example, the first device may send secondary indication information to the second device, where the secondary indication information may indicate that a RU or MRU allocated to the second device includes the first set of subcarriers and the second set of subcarriers. Optionally, the primary indication information may be ported in the PPDU for transmission, or it may be sent separately. For implementation, see primary indication information. This is not specifically limited in this application.

[00143] It should be noted that one form of secondary information is not specifically limited in this application. For example, secondary information may be a Petition 870250086893, dated 09 / 25 / 2025, page 63 / 123 50 / 81 1-bit information.

[00144] Optionally, when the second indication information indicates that the RU or MRU includes the first set of subcarriers and the second set of subcarriers, a position of the second set of subcarriers included in the RU or MRU may be agreed upon, for example, it may be predefined in a protocol or preconfigured, for implementation, see method 3. Details are not described again in this document.

[00145] Optionally, the second indication information may not only indicate that the RU or MRU includes the first set of subcarriers and the second set of subcarriers, but also specifically indicate which part of the subcarriers in the RU or MRU are the second set of subcarriers. The details are not described again in this application.

[00146] Case 2: Resource allocation information is carried in the perforated channel information field.

[00147] In this case, the STA can determine, based on the perforated channel information field, a RU or an MRU that can be used by the STA, or it can determine, based on the perforated channel information field, that a RU or an MRU includes the second set of subcarriers. A difference between case 2 and case 1 lies in the fact that, in case 1, RUs or MRUs of a plurality of STAs can be indicated through the RU allocation subfield, but in case 2, a RU or an MRU of an STA can be indicated indirectly based on the perforated channel information field. Case 2 can be understood as one in which, with reference to the PPDU bandwidth, the punched channel information field may indicate channel punching information in the PPDU bandwidth, and a remaining available channel may form a RU or an MRU, and the RU or MRU is used as a RU or an MRU for data transmission.Case 2 applies to a non-orthogonal frequency division multiplexing access mode. Petition 870250086893, dated 09 / 25 / 2025, page 64 / 123 51 / 81 OFDMA). An index table of the perforated channel information field is shown in Table 7. Table 7: Perforated channel information field PPDU Bandwidth Meaning Perforation Pattern (MRU or RU Index) Input Value 20 MHz No perforation (No perforation) [1] (RU 1 of 242 tones) 0 40 MHz No perforation (No perforation) [1 1] (RU 1 of 484 tones) 0 80 MHz No perforation (No perforation) [1 1 1 1] (RU 1 of 996 tones) 0 20 MHz perforation (20 MHz puncturing) [x 1 1 1] (MRU 1 of 484+242 tones) 1 [1 x 1 1] (MRU 2 of 484+242 tones) 2 [1 1 x 1] (MRU 3 of 484+242 tones) 3 [1 1 1 x] (MRU 4 of 484+242 tones) 4 160 MHz No Piercing (No piercing) [1 1 1 1 1 1 1 1] (RU 1 of 2*996 tons) 0 20 MHz Piercing (20 MHz [x 1 1 1 1 1 1 1] (MRU 1 of 996+484+242 tons) 1 [1 x 1 1 1 1 1 1] 2 Petition 870250086893, dated 09 / 25 / 2025, p. 65 / 123 52 / 81 PPDU Bandwidth Meaning Puncture Pattern (MRU or RU Index) Input Value (puncturing) (MRU 2 of 996+484+242 tons) [1 1 x 1 1 1 1 1] (MRU 3 of 996+484+242 tons) 3 [1 1 1 x 1 1 1 1] (MRU 4 of 996+484+242 tons) 4 [1 1 1 1 x 1 1 1] (MRU 5 of 996+484+242 tons) 5 [1 1 1 1 1 x 1 1] (MRU 6 of 996+484+242 tons) 6 [1 1 1 1 1 1 x 1] (MRU 7 of 996+484+242 tons) 7 [1 1 1 1 1 1 1 x] (MRU 8 of 996+484+242 tons) 8 40 MHz puncturing [xx 1 1 1 1 1 1] (MRU 1 of 996+484 tons) 9 [1 1 xx 1 1 1 1] (MRU 2 of 996+484 tons) 10 [1 1 1 1 xx 1 1] (MRU 3 of 996+484 tons) 11 [1 1 1 1 1 1 xx] (MRU 4 of 996+484 tons) 12 320 MHz No puncture [1 1 1 1 1 1 1 1] (RU 1 of 4*996 tons) 0 40 MHz puncture puncturing) [x 1 1 1 1 1 1 1] (MRU 1 of 3*996+484 tones) 1 [1 x 1 1 1 1 1 1] (MRU 2 of 3*996+484 tones) 2 [1 1 x 1 1 1 1 1] 3 Petition 870250086893, dated 09 / 25 / 2025, p. 66 / 123 53 / 81 PPDU Bandwidth Meaning Perforation Pattern (MRU or RU Index) Input Value (MRU 3 of 3*996+484 tones) [1 1 1 x 1 1 1 1] (MRU 4 of 3*996+484 tones) 4 [1 1 1 1 x 1 1 1] (MRU 5 of 3*996+484 tones) 5 [1 1 1 1 1 x 1 1] (MRU 6 of 3*996+484 tones) 6 [1 1 1 1 1 1 x 1] (MRU 7 of 3*996+484 tones) 7 80 MHz Puncturing [xx 1 1 1 1 1 1] (MRU 1 of 3*996 tones) 9 [1 1 xx 1 1 1 1] (MRU 2 of 3*996 tons) 10 [1 1 1 1 xx 1 1] (MRU 3 of 3*996 tons) 11 [1 1 1 1 1 1 xx] (MRU 4 of 3*996 tons) 12 [xx 1 1 1 1 1 1] (MRU 1 of 3*996 tons) 9 [1 1 xx 1 1 1 1] (MRU 2 of 3*996 tons) 10 [1 1 1 1 xx 1 1] (MRU 3 of 3*996 tons) 11 Simultaneous piercing of 80 MHz and 40 MHz (Concurrent 80 MHz and 40 MHz [xxx 1 1 1 1 1] (MRU 7 of 2*996+484 tons) 13 [xx 1 x 1 1 1 1] (MRU 8 of 2*996+484 tones) 14 [xx 1 1 x 1 1 1] (MRU 9 of 2*996+484 tones) 15 [xx 1 1 1 x 1 1] 16 Petition 870250086893, dated 09 / 25 / 2025, p. 67 / 123 54 / 81 PPDU Bandwidth Meaning Puncture Pattern (MRU or RU Index) Input Value (puncturing) (MRU 10 of 2*996+484 tons) [xx 1 1 1 1 x 1] (MRU 11 of 2*996+484 tons) 17 [xx 1 1 1 1 1 x] (MRU 12 of 2*996+484 tons) 18 [x 1 1 1 1 1 xx] (MRU 1 of 2*996+484 tons) 19 [1 x 1 1 1 1 xx] (MRU 2 of 2*996+484 tons) 20 [1 1 x 1 1 1 xx] (MRU 3 of 2*996+484 tons) 21 [1 1 1 x 1 1 xx] (MRU 4 of 2*996+484 tons) 22 [1 1 1 1 x 1 xx] (MRU 5 of 2*996+484 tons) 23 [1 1 1 1 1 xxx] (MRU 6 of 2*996+484 tons) 24 [00148 In table 7, each line can be referred to as a This entry represents a type of perforation information. For example, when the PPDU is 80 MHz, the perforated channel information field is 00010, meaning that when the value is 2, the corresponding perforation pattern is 1X11, indicating that the second 20 MHz RU in the 80 MHz bandwidth is perforated. The STA can determine that the 484+242 tone MRU is used for data transmission.

[00149] It can be understood that each entry in Table 7 can include 5 bits, and indicates punch information in a PPDU bandwidth, to indirectly notify a RU or an MRU that is used to transmit data. In Table 7, in different PPDU bandwidths, only some entries are used. Petition 870250086893, dated 09 / 25 / 2025, page 68 / 123 55 / 81 For example, for a PPDU bandwidth of 20 MHz, only one input with a value of 0 is used, that is, 00000. For a PPDU bandwidth of 40 MHz, only one input with a value of 0 is used, that is, 00000. For a PPDU bandwidth of 80 MHz, only inputs with values ​​of 0, 1, 2, 3, and 4 are used, which are respectively 00000, 00010, 00011, 00100, and 00101. The rest can be deduced by analogy.

[00150] In case 2, the punched channel information field may indicate that a RU or an MRU includes only the second set of subcarriers, or the punched channel information field may indicate that a RU or an MRU includes both the first set of subcarriers and the second set of subcarriers. Descriptions are provided below using different examples.

[00151] Example 3: The punched channel information field may indicate that a RU or an MRU includes only the second set of subcarriers.

[00152] In one possible example, a punched channel information field entry can be added to indicate that an MRU or RU includes only the second set of subcarriers. The newly added punched channel information field entry can notify, when notifying the punching information, that an RU or MRU including a remaining available channel includes only the second set of subcarriers.

[00153] In this embodiment of this application, the newly added entry of the punched channel information field may be 5 bits that are not used and that are newly added to Table 7. For example, the newly added entry may include 00110, 00111, 01000, 01001, 01010, 01011, 01100, 01101, 01110, 01111, 10000, 10001, 10010, 10011, 10100, 10101, 10110, 10111, 11000, 11001, 11010, 11011, 11100, 11101, 11110, 11111 and similar in a width of 80 MHz PPDU band. Alternatively, the Petition 870250086893, dated 09 / 25 / 2025, p. 69 / 123 The newly added 56 / 81 input can extend from 5 bits to 6 bits, 7 bits, or even more bits.

[00154] It may be understood that the previous entries of the newly added perforated channel information field are shown merely as examples. The value of the entries of the newly added perforated channel information field is not limited in the modalities of this request. The details are not described below.

[00155] For example, for the 80 MHz PPDU bandwidth, the punched channel information field carried in the PPDU is a newly added entry 11011 corresponding to 1X11. The newly added entry in the punched channel information field indicates that the second RU in the 80 MHz bandwidth cannot be used for data transmission, and a RU corresponding to the first 20 MHz, a RU corresponding to the third 20 MHz, and a RU corresponding to the fourth 20 MHz include only the second set of subcarriers. In this case, the second device can determine the available RU based on the newly added entry in the punched channel information field, and the available RU includes only the second set of subcarriers.

[00156] In another possible example, an original perforated channel information field may indicate that an MRU or RU includes only the second set of subcarriers. For example, based on the fact that the original perforated channel information field indicates the perforation information, third indication information may be added to indicate that the available RU or MRU indicated by the original perforated channel information field includes only the second set of subcarriers. In this possible case, the second device may determine the second set of subcarriers based on the third indication information.

[00157] For example, the first device can send the third indication information to the second device, where Petition 870250086893, dated 09 / 25 / 2025, page 70 / 123 57 / 81 The third indication information may indicate that a RU or MRU allocated to the second device includes only the second set of subcarriers. Optionally, the third indication information may be ported in the PPDU for submission, or may be submitted separately. For implementation, see the first indication information. This is not specifically limited in this application.

[00158] Based on the previous solution, in a non-OFDMA mode, the first device can indicate the RU or MRU available to the second field via the punched channel information field, and indicate to the second device that the RU or MRU includes only the second set of subcarriers. In this way, the complexity of data analysis by the second device is reduced, while the PAPR is reduced.

[00159] Example 4: The punched channel information field may indicate that a RU or an MRU includes the first set of subcarriers and the second set of subcarriers.

[00160] In one possible example, a punched channel information field entry can be added to indicate a first set of subcarriers and a second set of subcarriers for an MRU or an RU. The newly added punched channel information field entry can notify, when notifying the punching information, that an RU or an MRU including a remaining available channel includes the first set of subcarriers and the second set of subcarriers.

[00161] For example, for the 80 MHz PPDU bandwidth, the punched channel information field carried in the PPDU is a newly added entry 11010 corresponding to 1111, the newly added entry in the punched channel information field indicates that all RUs in the 80 MHz bandwidth can be used for data transmission, one RU corresponding to the first 20 MHz, one RU corresponding to the second 20 MHz, one RU corresponding to the third 20 MHz and one RU Petition 870250086893, dated 09 / 25 / 2025, p. 71 / 123 58 / 81 corresponding to the 20 MHz bands includes the first set of subcarriers and the second set of subcarriers.

[00162] Optionally, when the newly added entry in the punched channel information field indicates that the available RU or MRU includes the first set of subcarriers and the second set of subcarriers, a position of the second set of subcarriers may be implemented by agreement, for example, it may be predefined in a protocol or preconfigured. For details, see the related descriptions in Example 1 and Example 2. Details are not described again in this document.

[00163] Optionally, when the newly added punched channel information field entry indicates that the available RU or MRU includes the first set of subcarriers and the second set of subcarriers, fourth indication information may indicate which part of the available RUs or MRUs indicated by the newly added punched channel information field entry is the first set of subcarriers and which part of the available RUs or MRUs indicated by the newly added punched channel information field entry is the second set of subcarriers.

[00164] Optionally, the fourth indication information can be ported to the PPDU for submission, for example, it can be ported to a reserved field or a newly added field in the PPDU. For another example, the fourth indication information can be ported to a reserved field or a newly added field in a user signal field (U-SIG). This is not specifically limited in this request.

[00165] In one possible case, the fourth indication information can be implemented by means of a bitmap. The bitmap can indicate whether RUs or MRUs from a low frequency to a high frequency are available RUs or MRUs indicated by a newly added entry in the channel information field. Petition 870250086893, dated 09 / 25 / 2025, page 72 / 123 59 / 81 punched codes include either only the first subcarrier or only the second subcarrier. For example, when the value of a bit in the bitmap is 0, this may indicate that a corresponding RU or MRU includes only the second set of subcarriers. Conversely, when the value of a bit in the bitmap is 1, this may indicate that a corresponding RU or MRU includes only the second set of subcarriers.

[00166] For example, the bitmap has 4 bits. If the bitmap is 1011, the second RU can be considered to include only the second set of subcarriers. On the other hand, if the bitmap is 0100, the subcarriers included in the second RU can be considered to be the second set of subcarriers.

[00167] It should be noted that the 4 bits are shown only as an example of the bitmap length, and do not constitute a limitation on the bitmap length. The bitmap length can be 5 bits, 6 bits, 8 bits, or similar. This is not specifically limited in this application. Assuming the bitmap length is 4 bits, the MRU currently includes a maximum of four RUs, and the 4-bit bitmap can indicate whether the RUs from a low frequency to a high frequency include only the first subcarrier or only the second subcarrier. If the MRU includes only two RUs, the last two bits of the bitmap can be reserved. By analogy, if the MRU includes only three RUs, the last bit of the bitmap can be reserved.

[00168] In another possible example, an original perforated channel information field may indicate a first set of subcarriers and a second set of subcarriers of an MRU or a RU. For example, based on the fact that the original perforated channel information field indicates the perforation information, fifth indication information may be added to indicate that the available RU or MRU indicated by the original perforated channel information field includes the first set of subcarriers and the second set of Petition 870250086893, dated 09 / 25 / 2025, page 73 / 123 60 / 81 subcarriers. In this possible case, the second device can determine the second set of subcarriers based on the fourth indication information.

[00169] For example, the first device may send the fifth indication information to the second device, where the fifth indication information may indicate that the RU or MRU allocated to the second device includes the first set of subcarriers and the second set of subcarriers. Optionally, the fifth indication information may be ported in the PPDU for transmission, or may be sent separately. For implementation, see the fourth indication information. This is not specifically limited in this application. Optionally, the fourth indication information may be implemented via a bitmap.

[00170] Case 1 and Case 2 above describe implementations in which the resource unit allocation information indicates that one or more resource units include the second set of subcarriers. This embodiment of this request further provides another possible implementation. In this implementation, the second subcarrier is not at the granularity of a RU or MRU, but at the granularity of a subcarrier. For example, the second set of subcarriers may include one or more subcarrier parts included in the RU or MRU, a null subcarrier, a guard subcarrier, or a pilot subcarrier.

[00171] In this implementation, the position of the second subcarrier can be notified based on signaling information, or it can be pre-agreed. For example, in FIG. 7A, the second set of subcarriers includes a guard subcarrier. For example, the first device notifies, based on signaling information, the second device that the guard subcarrier is the second subcarrier. In this case, the second device can use guard subcarriers on two sides. Petition 870250086893, dated 09 / 25 / 2025, page 74 / 123 61 / 81 of the data subcarrier as second subcarriers, to reduce the PAPR. The PPDU can be transmitted using the data subcarrier, that is, transmitted using the first subcarrier.

[00172] For example, in FIG. 7B, the second set of subcarriers includes a data subcarrier in a RU or an MRU. For example, data subcarriers in fixed positions can be used as the second set of subcarriers in a pre-agreed manner. In this case, the second device can use the pre-agreed data subcarrier as the second subcarrier, to reduce the PAPR. The PPDU can be transmitted using a remaining data subcarrier, i.e., the first subcarrier.

[00173] In one possible implementation, the first device can notify, based on signaling information, the first device to transmit data without using the second subcarrier or transmit data using the second subcarrier.

[00174] For example, signaling information can indicate whether the PPDU in S501 is transmitted without using the second subcarrier or is transmitted using the second subcarrier. Signaling information can be carried on the PPDU, or it can be transmitted separately without being carried on the PPDU. For example, signaling information can be 1-bit information. When a signaling information value is 0, this may indicate that the PPDU is transmitted without using the second subcarrier; or when a signaling information value is 1, this may indicate that the PPDU is transmitted using the second subcarrier. Conversely, when a signaling information value is 1, this may indicate that the PPDU is transmitted without using the second subcarrier; or when a signaling information value is 0, this may indicate that the PPDU is transmitted using the second subcarrier.

[00175] If the signaling information indicates that the PPDU is transmitted using the second subcarrier, a position of the second set of subcarriers may be pre-agreed or may Petition 870250086893, dated 09 / 25 / 2025, page 75 / 123 62 / 81 to be indicated by the signaling information. This is not specifically limited in this application. For example, the second set of subcarriers may include one or more subcarrier parts included in the RU or MRU, a null subcarrier, a guard subcarrier, or a pilot subcarrier.

[00176] For example, the second set of subcarriers includes the guard subcarrier. As shown in FIG. 8A, if the signaling information indicates that the PPDU is transmitted using the second subcarrier, the guard subcarriers on either side of the data subcarrier can be second subcarriers, and the PPDU can be transmitted using the data subcarrier, i.e., transmitted using the first subcarrier. If the signaling information indicates that the PPDU is transmitted without using the second subcarrier, the PPDU can be transmitted using the data subcarrier, i.e., transmitted using the first subcarrier.

[00177] In this way, the second device can determine the position of the second set of subcarriers based on the signaling information sent by the first device or based on a pre-agreed position of the second set of subcarriers. If the second device indicates to the first device, based on the signaling information, that a second PPDU is being transmitted without using the second subcarrier, the second device can determine that the PPDU is currently being transmitted without using the second set of subcarriers.

[00178] For example, the second set of subcarriers includes a data subcarrier. As shown in FIG. 8B, if the signaling information indicates that the PPDU is transmitted using the second subcarrier, data subcarriers in fixed positions can be used as the second set of subcarriers, and the PPDU can be transmitted using the remaining data subcarrier, i.e., the first subcarrier. If the signaling information indicates that the PPDU is Petition 870250086893, dated 09 / 25 / 2025, page 76 / 123 63 / 81 transmitted without using the second subcarrier, the PPDU can be transmitted using all data subcarriers.

[00179] In one possible implementation, the free subcarrier can be used to reduce a PAPR. A free subcarrier value corresponding to a low PAPR needs to be obtained through random search or calculation. This process requires some extra time. Compared to a method where there is no free subcarrier, in the method where the free subcarrier is ported, it can be difficult for the second device to determine a suitable free subcarrier value within a limited time when the second device's capacity is poor. To solve this problem, in this embodiment of this application, additional time can be provided for the second device to generate an appropriate free subcarrier.

[00180] In one example, the PPDU may include a plurality of OFDM symbols. There may be a guard interval between a plurality of OFDM symbols, and the selection of a guard interval value is related to the second set of subcarriers. For example, when the PAPR is reduced through the second set of subcarriers, the second device may use a guard interval with a large value to increase the processing time of each OFDM symbol. In this way, the second device has sufficient time to determine an appropriate free subcarrier value.

[00181] Optionally, the guard interval may include one or more of a cyclic prefix, a cyclic suffix, and a fixed sequence. For example, the guard interval may include only a cyclic prefix, or it may include a cyclic suffix, or it may include a fixed sequence of any waveform. For another example, the guard interval may include a cyclic prefix and a cyclic suffix, or it may include a fixed sequence of any waveform and a cyclic prefix, or it may include a fixed sequence of any waveform and a cyclic suffix. Petition 870250086893, dated 09 / 25 / 2025, p. 77 / 123 64 / 81 For another example, the guard interval could include a cyclic prefix + a cyclic suffix + a fixed sequence of any waveform.

[00182] In another example, in this embodiment of this request, a predefined padding bit may be added to at least one field before a data field included in the PPDU. The length of the predefined padding bit is related to the second set of subcarriers. For example, when the PAPR is reduced through the second set of subcarriers, the second device may add a long padding bit to at least one field before the data field, to increase the processing time of each OFDM symbol. In this way, the second device has sufficient time to determine an appropriate value of the free subcarrier. It can be understood that the predefined padding bit may be all 0, all 1, or a random bit. This is not specifically limited in this request. The predefined padding bit may be predefined in a protocol or preconfigured. This is not specifically limited in this request.

[00183] In another possible implementation, in some cases (for example, a trigger frame prompts a user to send uplink data), the first device needs to know the processing capacity of the second device for the free subcarrier. In this case, the first device can notify the capacity of the first device during capacity negotiation. For example, when the second subcarrier is used to reduce the PAPR, the processing time can be specified, or even more specifically, when a size of a second subcarrier and / or a size of a bandwidth is / are specified, the processing time can be specified.

[00184] For example, the second device can send capacity information to the first device, where the Petition 870250086893, dated 09 / 25 / 2025, page 78 / 123 65 / 81 capacity information can indicate the processing time when the second subcarrier is used to reduce the PAPR. Optionally, the capacity information can specifically indicate a match between a second subcarrier size, a bandwidth occupied by the PPDU, and the processing time when the second subcarrier is used to reduce the PAPR.

[00185] In this embodiment of this application, the previous possible implementations are used to describe an implementation of PAPR reduction through the second set of subcarriers. An embodiment of this application additionally provides another method of information transmission. In the method, a first device can indicate, to a second device, an adjustment factor through a reference subcarrier. The adjustment factor can indicate a coefficient by which some or all of the data subcarriers are multiplied into data subcarriers. It can be understood that the coefficient can be used to reduce a PAPR. Based on this solution, the PAPR can be reduced through the adjustment factor, and the adjustment factor is indicated through the reference subcarrier.

[00186] FIG. 9 is an example of a flowchart of a method for transmitting information according to one modality of this request. The method may include the following operations.

[00187] S901: A first device generates a PPDU.

[00188] A PPDU may include a data subcarrier. It can be understood that the data subcarrier may be used to carry data. A portion or all of the data subcarriers in the data subcarriers may be multiplied by a coefficient, or phase conversion may be performed on a portion or all of the data subcarriers, to reduce a PAPR.

[00189] For example, a frequency domain sequence = {a1, a2, a3, a4, ..., a236, c1, c2, c3, c4, ..., c20}, some subcarriers {c1, c2, c3, ..., c20} following Petition 870250086893, dated 09 / 25 / 2025, p. 79 / 123 66 / 81 frequency domains can still carry data, but some subcarriers may be multiplied by the coefficient, or phase conversion by symbol, or even amplitude and phase conversion may be performed on some subcarriers, to reduce a corresponding PAPR to a symbol. For ease of description, the coefficient by which some or all data subcarriers are multiplied, or the phase conversion values ​​of some or all data subcarriers, may be called the adjustment factor.

[00190] In the solution shown in FIG. 9, some or all of the data subcarriers can multiply the coefficient or perform phase rotation to reduce the PAPR, which is not as flexible as the mode shown in FIG. 5. Subcarriers that multiply the coefficient or perform phase rotation can be called semi-free subcarriers. In the mode shown in FIG. 9, although the PAPR cannot be flexibly reduced through a free subcarrier as in the mode shown in FIG. 6, some or all of the data subcarriers in the mode shown in FIG. 9 can still carry data, so that transmission resources can be saved.

[00191] S902: The first device sends the PPDU to a second device.

[00192] Correspondingly, the second device receives the PPDU from the first device.

[00193] In a possible implementation, additional signaling may indicate, for the second device, the adjustment factor, that is, the coefficient by which part or all of the data subcarriers in the data subcarriers are multiplied, or the phase conversion values ​​of part or all of the data subcarriers. It can be understood that the adjustment factors of all data subcarriers in part or in all data subcarriers may be the same or may be different. Petition 870250086893, dated 09 / 25 / 2025, page 80 / 123 67 / 81

[00194] In another possible implementation, the PPDU in S902 may carry a reference subcarrier, and the reference subcarrier may indicate the adjustment factor. For example, the adjustment factor may be indicated by a phase value or an amplitude value of one or more reference subcarriers.

[00195] For example, a phase value of -1 of the reference subcarrier may correspond to an adjustment factor of -1, a phase value of 1 of the reference subcarrier may correspond to an adjustment factor of 1, and a phase value of j of the reference subcarrier may correspond to an adjustment factor of j, and a phase value of -j of the reference subcarrier may correspond to an adjustment factor of -j. The second device may determine, based on the first information carried on the reference subcarrier, the adjustment factor corresponding to some or all of the data subcarriers. It can be understood that a correspondence between a phase value or an amplitude value of the reference subcarrier and the adjustment factor may be pre-agreed, for example, it may be predefined in a protocol or pre-configured.

[00196] Optionally, the reference subcarrier may be in a unit of a RU or an MRU, or it may be part of agreed subcarriers, for example, a subcarrier in a fixed position at a specific bandwidth granularity. For example, the reference subcarrier may be implemented by means of one or more pilot subcarriers, a data subcarrier, a null subcarrier, or a guard subcarrier.

[00197] When the reference subcarrier is implemented via the data subcarrier, the position of the reference subcarrier may be predefined in a protocol or preconfigured. This is not specifically limited in this application. If the data subcarriers are used as reference subcarriers to indicate the adjustment factor, these data subcarriers will not carry data. Petition 870250086893, dated 09 / 25 / 2025, page 81 / 123 68 / 81

[00198] It may be understood that the positions of some or all data subcarriers may be determined based on the reference subcarrier, for example, data subcarriers before the reference subcarrier or data subcarriers after the reference subcarrier. Alternatively, the positions of some or all data subcarriers may be predefined in a protocol or preconfigured. This is not specifically limited in this application.

[00199] Optionally, the embodiment shown in FIG. 9 may additionally include the following operation S903.

[00200] S903: The second device obtains an original value from some or all of the data subcarriers based on the adjustment factor.

[00201] In S903, the second device can divide some or all of the data subcarriers by a corresponding coefficient or perform phase conversion based on the adjustment factor indicated by the reference subcarrier, to obtain the original values ​​corresponding to the data subcarriers.

[00202] For example, the reference subcarrier is implemented via the pilot subcarrier. The pilot subcarrier can indicate phase shift values ​​for some or all of the data subcarriers. The second device can obtain four types of information via a quadrature phase shift keying (QPSK) modulation satellite status point received on the pilot subcarrier. For example, four constellation points can correspond respectively to phase shift values ​​1, j, -1, and -j. From the perspective of the first device, {c1, c2, c3, ..., c20}, j{c1, c2, c3, ..., c20}, -{c1, c2, c3, ..., c20}, and -j{c1, c2, c3, ..., c20} are sent respectively at corresponding frequency domain positions. The second device can also deduce, based on the four types of information obtained, that the transmitted data are {c1, c2, c3, ..., c20}. Petition 870250086893, dated 09 / 25 / 2025, page 82 / 123 69 / 81

[00203] Based on this solution, the second device can determine adjustment factors for some or all of the data subcarriers via the reference subcarrier, in order to reduce the overall PAPR.

[00204] For a reference subcarrier modulation scheme indicating the adjustment factor, for robustness, a binary phase shift keying (BPSK) modulation scheme can be selected. Optionally, to indicate more adjustment factors, a higher-order modulation scheme can also be used. Furthermore, a plurality of reference subcarriers can be used to jointly indicate an adjustment factor of a corresponding data subcarrier. For example, as shown in FIG. 10, there are two pilot subcarriers, both using the BPSK modulation scheme. In this case, the two pilots can also indicate a plurality of states, for example, 2*2=4 states.

[00205] FIG. 11 is a block diagram of a communication device 1100 according to an embodiment of this application. The communication device 1100 may correspondingly implement functions or steps implemented by the first device or the second device in the previous method embodiments. The communication device may include a processing unit 1110 and a transceiver unit 1120. Optionally, the communication device may additionally include a storage unit. The storage unit may be configured to store instructions (code or program) and / or data. The processing unit 1110 and the transceiver unit 1120 may be coupled to the storage unit. For example, the processing unit 1110 may read the instructions (code or program) and / or data in the storage unit to implement a corresponding method.The preceding units can be arranged independently or they can be partially or completely integrated. Petition 870250086893, dated 09 / 25 / 2025, page 83 / 123 70 / 81

[00206] Optionally, the 1120 transceiver unit may include a transmit unit and a receive unit. The transmit unit may be configured to perform all transmit operations performed by the 1100 communication device, and the receive unit may be configured to perform all receive operations performed by the 1100 communication device.

[00207] In some possible implementations, the communication device 1100 may correspondingly implement the behavior and functions of the first device and similar devices in the previous method embodiments. For example, the communication device 1100 may be the first device, or it may be a component (e.g., a chip or a circuit) used in the first device. The transceiver unit 1120 may be configured to perform all the receive or send operations performed by the first device in the embodiment shown in FIG. 5 or FIG. 9, for example, S501 and S502 in the embodiment shown in FIG. 5, S902 in the embodiment shown in FIG. 9, and / or configured to support another process of the technology described in this descriptive report. The processing unit 1110 is configured to perform all operations, except the receive and send operations, performed by the first device in the embodiment shown in FIG. 5 or FIG. 9.9, for example, S901 in the embodiment shown in FIG. 9, and / or configured to support another process of the technology described in this descriptive report.

[00208] For example, processing unit 1110 is configured to generate a PPDU. Transceiver unit 1120 is configured to send the PPDU to the second device. The PPDU includes resource unit allocation information, and the resource unit allocation information indicates one or more resource units. The resource unit allocation information further indicates that one or more resource units are allocated to the PPDU. Petition 870250086893, dated 09 / 25 / 2025, page 84 / 123 71 / 81 features include a first set of subcarriers and a second set of subcarriers, and the first set of subcarriers and the second set of subcarriers do not overlap. The PPDU includes the first data sent to the second device in the first set of subcarriers and a sequence sent to the second device in the second set of subcarriers, and the sequence is used to reduce a PAPR.

[00209] For another example, processing unit 1110 is configured to generate a PPDU. Transceiver unit 1120 is configured to send the PPDU to the second device, where the PPDU includes a data subcarrier and a reference subcarrier. The reference subcarrier indicates an adjustment factor, the adjustment factor indicates a coefficient by which some or all of the data subcarriers in the data subcarriers are multiplied, and the coefficient is used to reduce a PAPR.

[00210] In some possible implementations, the communication device 1100 may correspondingly implement the behavior and functions of the second device in the previous method embodiments. For example, the communication device 1100 may be the second device, or it may be a component (e.g., a chip or a circuit) used in the second device. The transceiver unit 1120 may be configured to perform all the receive or send operations performed by the second device in the embodiment shown in FIG. 5 or FIG. 9, for example, S501 and S502 in the embodiment shown in FIG. 5, S902 in the embodiment shown in FIG. 9, and / or configured to support another process of the technology described in this descriptive report. The processing unit 1110 is configured to perform all operations, except the receive and send operations, performed by the second device in the embodiment shown in FIG. 5, for example, S903 in the embodiment shown in FIG. 9.9, and / or configured to support another process of the technology described. Petition 870250086893, dated 09 / 25 / 2025, page 85 / 123 72 / 81 in this descriptive report.

[00211] For example, transceiver unit 1120 is configured to receive a PPDU from the first device. The PPDU includes resource unit allocation information, and the resource unit allocation information indicates one or more resource units. The resource unit allocation information further indicates that the one or more resource units include a first set of subcarriers and a second set of subcarriers, and the first set of subcarriers and the second set of subcarriers do not overlap. Processing unit 1110 is configured to determine the first set of subcarriers and the second set of subcarriers based on the resource unit allocation information. The PPDU includes the first data sent to the second device in the first set of subcarriers and a sequence sent to the second device in the second set of subcarriers, and the sequence is used to reduce a PAPR.

[00212] For another example, transceiver unit 1120 is configured to receive a PPDU from the first device, where the PPDU includes a data subcarrier and a reference subcarrier. The reference subcarrier indicates an adjustment factor, the adjustment factor indicates a coefficient by which a portion or all of the data subcarriers in the data subcarriers are multiplied, and the coefficient is used to reduce a PAPR. Processing unit 1110 is configured to divide a portion or all of the data subcarriers by the coefficient, to obtain an original value of the portion or all of the data subcarriers.

[00213] For operations performed by processing unit 1110 and transceiver unit 1120, refer to the related descriptions in the previous method embodiments.

[00214] It should be understood that processing unit 1110 in this modality of this request can be implemented by a Petition 870250086893, dated 09 / 25 / 2025, page 86 / 123 73 / 81 processor or a circuit component related to the processor, and the transceiver unit 1120 can be implemented by a transceiver, a circuit component related to the transceiver, or a communication interface.

[00215] Based on the same concept, as shown in FIG. 12, one embodiment of this application provides a communication apparatus 1200. The communication apparatus 1200 includes a processor 1210. Optionally, the communication apparatus 1200 may additionally include a memory 1220, configured to: store instructions executed by the processor 1210, store input data required for the processor 1210 to execute instructions, or store data generated after the processor 1210 executes instructions. The processor 1210 may implement the method shown in the previous method embodiments based on the instructions stored in the memory 1220.

[00216] Based on the same concept, as shown in FIG. 13, one embodiment of this application provides a communication apparatus 1300. The communication apparatus 1300 can be a chip or a chip system. Optionally, in this embodiment of this application, the chip system can include a chip, or it can include a chip and another discrete device.

[00217] The communication apparatus 1300 may include at least one processor 1310. The processor 1310 is coupled to a memory. Optionally, the memory may be located inside the apparatus or may be located outside the apparatus. For example, the communication apparatus 1300 may additionally include at least one memory 1320. The memory 1320 stores a computer program, configuration information, a computer program, or instructions and / or data necessary to implement any of the preceding embodiments. The processor 1310 may execute the computer program stored in the memory 1320 to complete the method in any of the preceding embodiments. Petition 870250086893, dated 09 / 25 / 2025, page 87 / 123 74 / 81

[00218] The coupling in this embodiment of this application may be an indirect coupling or a communication connection between devices, units or modules in an electrical, mechanical or other form, and is used for the exchange of information between the devices, units, or modules. The processor 1310 may cooperate with the memory 1320. A specific means of connection between a transceiver 1330, the processor 1310 and the memory 1320 is not limited in embodiments of this application.

[00219] The communication apparatus 1300 may additionally include the transceiver 1330, and the communication apparatus 1300 may exchange information with another device by means of the transceiver 1330. The transceiver 1330 may be a circuit, a bus, a transceiver, or any other apparatus that can be configured to exchange information, or is called a signal transceiver unit. As shown in FIG. 13, the transceiver 1330 includes a transmitter 1331, a receiver 1332, and an antenna 1333. Furthermore, when the communication apparatus 1300 is a chip-type apparatus or circuit, the transceiver in the communication apparatus 1300 may alternatively be an input / output circuit and / or a communication interface, and may input data (or referred to as receive data) and transmit data (or referred to as send data).The processor is an integrated processor, a microprocessor, or an integrated circuit, and the processor can determine output data based on input data.

[00220] In one possible implementation, communication device 1300 can be used in a first device. Specifically, communication device 1300 can be the first device, or it can be a device that can support the first device and implement a function of the first device in either of the previous embodiments. Memory 1320 stores a necessary computer program, a computer program or instructions and / or data to implement a function. Petition 870250086893, dated 09 / 25 / 2025, page 88 / 123 75 / 81 of the management device in any of the previous modes, for example, the first device. Processor 1310 can execute the computer program stored in memory 1320, to complete the method performed by the first device in any of the previous modes.

[00221] In one possible implementation, communication device 1300 can be used in a second device. Specifically, communication device 1300 can be the second device, or it can be a device that can support the second device and implement a function of the second device in either of the previous embodiments. Memory 1320 stores a computer program, a computer program, or instructions and / or data necessary to implement a function of the second device in either of the previous embodiments. Processor 1310 can execute the computer program stored in memory 1320, to complete the method performed by the second device in either of the previous embodiments.

[00222] The 1300 communication device supplied in this embodiment can be used in the first device to complete the method performed by the first device, or it can be used in the second device to complete the method performed by the second device. Therefore, for the technical effect that can be achieved by the communication device, refer to the embodiments of the previous method. Details are not described again in this document.

[00223] In embodiments of this application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or realize the methods, steps, and logic block diagrams disclosed in embodiments of this application. The general-purpose processor may be a Petition 870250086893, dated 09 / 25 / 2025, page 89 / 123 76 / 81 microprocessor, any conventional processor, or similar. The steps of the method disclosed with reference to the embodiments of this application may be performed directly by a hardware processor, or may be performed using a combination of hardware in the processor and a software module.

[00224] In the embodiments of this application, memory may be non-volatile memory, for example a hard disk drive (HDD) or a solid-state drive (SSD), or it may be volatile memory, for example random access memory (RAM). Alternatively, memory may be any other medium that can be configured to carry or store the expected program code in the form of an instruction or a data structure and that can be accessed by a computer, but is not limited to this. Memory in the embodiments of this application may alternatively be a circuit or any other device that can implement a storage function, and is configured to store a computer program, a computer program or instructions and / or data.

[00225] See FIG. 14. Based on the previous embodiments, one embodiment of this application further provides another communication apparatus 1400, including an input / output interface 1410 and a logic circuit 1420. The input / output interface 1410 is configured to receive code instructions and transmit the code instructions to the logic circuit 1420. The logic circuit 1420 is configured to execute the code instructions to perform the method performed by the first apparatus or the second apparatus in either of the previous embodiments.

[00226] Optionally, the 1410 input / output interface may be an interface on a chip, and the 1420 logic circuit may be one or more processors. Optionally, the one or more processors may be located within the device, or Petition 870250086893, dated 09 / 25 / 2025, pp. 90 / 123 77 / 81 may be located outside the device.

[00227] The following describes in detail the operations performed when the communication device is used on the first device or the second device.

[00228] In another optional implementation, the 1400 communication device can be used on the first device to perform the method performed by the first device, specifically, for example, the method performed by the first device in the mode shown in FIG. 5 or FIG. 9.

[00229] For example, logic circuit 1420 is configured to generate a PPDU. Input / output interface 1410 is configured to send a PPDU to the second device. The PPDU includes resource unit allocation information, and the resource unit allocation information indicates one or more resource units. The resource unit allocation information further indicates that the one or more resource units include a first set of subcarriers and a second set of subcarriers, and the first set of subcarriers and the second set of subcarriers do not overlap. The PPDU includes the first data sent to the second device in the first set of subcarriers and a sequence sent to the second device in the second set of subcarriers, and the sequence is used to reduce a PAPR.

[00230] For another example, logic circuit 1420 is configured to generate a PPDU. Input / output interface 1410 is configured to send a PPDU to the second device, where the PPDU includes a data subcarrier and a reference subcarrier. The reference subcarrier indicates an adjustment factor, the adjustment factor indicates a coefficient by which some or all of the data subcarriers in the data subcarriers are multiplied, and the coefficient is used to reduce a PAPR.

[00231] The 1400 communication device supplied in this Petition 870250086893, dated 09 / 25 / 2025, pp. 91 / 123 Mode 78 / 81 can be used on the first device to complete the method performed by the first device. Therefore, for the technical effect that can be achieved by the communication device, refer to the modes of the previous method. Details are not described again in this document.

[00232] In an optional implementation, the 1400 communication device can be used in the second device to perform the method performed by the second device, specifically, for example, the method performed by the second device in the mode shown in FIG. 5 or FIG. 9.

[00233] For example, the 1410 input / output interface is configured to input a PPDU from the first device. The PPDU includes resource unit allocation information, and the resource unit allocation information indicates one or more resource units. The resource unit allocation information further indicates that the one or more resource units include a first set of subcarriers and a second set of subcarriers, and the first set of subcarriers and the second set of subcarriers do not overlap. The 1420 logic circuit is configured to determine the first set of subcarriers and the second set of subcarriers based on the resource unit allocation information. The PPDU includes the first data sent to the second device in the first set of subcarriers and a sequence sent to the second device in the second set of subcarriers, and the sequence is used to reduce a PAPR.

[00234] For another example, the 1410 input / output interface is configured to input a PPDU from the first device, where the PPDU includes a data subcarrier and a reference subcarrier. The reference subcarrier indicates an adjustment factor, the adjustment factor indicates a coefficient by which some or all of the data subcarriers in the data subcarriers are multiplied, and the coefficient is used to reduce Petition 870250086893, dated 09 / 25 / 2025, pp. 92 / 123 79 / 81 a PAPR. The 1420 logic circuit is configured to divide some or all of the data subcarriers by the coefficient, to obtain an original value of some or all of the data subcarriers.

[00235] The 1400 communication device supplied in this embodiment can be used in the second device to complete the method performed by the second device. Therefore, for the technical effect that can be achieved by the communication device, refer to the embodiments of the previous method. Details are not described again in this document.

[00236] Based on the previous embodiments, one embodiment of this application additionally provides a communication system. The communication system includes at least one communication device used in a first device and at least one communication device used in a second device. For the technical effect that can be achieved, refer to the previous embodiments. Details are not described again in this document.

[00237] Based on the preceding embodiments, one embodiment of this application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program or instructions. When the instructions are executed, the method performed by the first device or the method performed by the second device in any of the preceding embodiments is implemented. The computer-readable storage medium may include any medium that can store program code, such as a USB flash drive, a removable hard disk drive, a read-only memory, a random access memory, a magnetic disk, or an optical disk.

[00238] To implement the functions of the communication devices in FIGS. 11 to 14, an embodiment of this application additionally provides a chip, including a processor, configured to support the communication device in Petition 870250086893, dated 09 / 25 / 2025, pp. 93 / 123 80 / 81 implementation of the functions of the first device or the second device in the modalities of the previous method. In one possible design, the chip is connected to a memory, or the chip includes a memory. The memory is configured to store a computer program or instructions and data necessary for the communication device.

[00239] A person skilled in the art should understand that embodiments of this application may be provided as a method, a system, or a computer program product. Therefore, this application may use a form of hardware-only embodiments, software-only embodiments, or embodiments with a combination of software and hardware. Furthermore, this application may use a form of a computer program product that is implemented on one or more computer-usable storage media (including, but not limited to, magnetic disk memory, a CD-ROM, and optical storage) that includes computer-usable program code.

[00240] This application is described with reference to the flowcharts and / or block diagrams of the method, device (system), and computer program product according to embodiments of this application. It should be understood that a computer program or instructions may be used to implement each procedure and / or each block in the flowcharts and / or block diagrams and a combination of a procedure and / or a block in the flowcharts and / or block diagrams. The instructions or computer program may be provided for a general-purpose computer, a dedicated computer, an embedded processor, or a processor of another programmable data processing device to generate a machine, such that the instructions executed by the computer or processor of the other programmable data processing device generate an apparatus to implement a specific function in one or more procedures in the flowcharts and / or in one or more blocks in the block diagrams. Petition 870250086893, dated 09 / 25 / 2025, pp. 94 / 123 81 / 81

[00241] The computer program or instructions may alternatively be stored in computer-readable memory that may instruct the computer or other programmable data processing device to operate in a specific manner, whereby the instructions stored in computer-readable memory generate an artifact that includes an instruction set. The instruction set implements a function specified in one or more procedures in flowcharts and / or in one or more blocks in block diagrams.

[00242] The computer program or instructions may alternatively be ported to the computer or other programmable data processing device, so that a series of operational steps are performed on the computer or other programmable device to generate computer-implemented processing. Therefore, the instructions executed on the computer or other programmable device provide steps to implement a specific function in one or more procedures in flowcharts and / or in one or more blocks in block diagrams.

[00243] It is clear that a person skilled in the art may make various modifications and variations to the embodiments of this application without departing from the scope of the embodiments of this application. In this case, this application intends to encompass such modifications and variations of embodiments of this application, provided that they fall within the scope of the claims of this application and their equivalent technologies. Petition 870250086893, dated 09 / 25 / 2025, pp. 95 / 123

Claims

1 / 6 CLAIMS 1. A method of transmitting information, characterized in that it comprises: sending, by a first device, a physical protocol data unit, PPDU, to a second device, wherein the PPDU comprises resource unit allocation information, the resource unit allocation information indicates one or more resource units, the resource unit allocation information further indicates that the one or more resource units comprise a first set of subcarriers and a second set of subcarriers, and the first set of subcarriers and the second set of subcarriers do not overlap, wherein the PPDU comprises first data sent in the first set of subcarriers and a sequence sent in the second set of subcarriers, and the sequence is used to reduce a peak average power ratio, PAPR.

2. A method according to claim 1, characterized in that the resource unit allocation information comprises one or more user fields, and the one or more user fields comprise a user field indicating the second set of subcarriers, and an identifier of the user field indicating the second set of subcarriers is a special value; or the resource unit allocation information indicates that part or all of one or more resource units comprise only the second set of subcarriers.

3. Method, according to claim 1, characterized in that the resource unit allocation information is carried in a perforated channel information field of the PPDU.

4. Method, according to any one of claims 1 to 3, characterized in that the second set of Petition 870250086893, dated 09 / 25 / 2025, p. 112 / 123 2 / 6 subcarriers comprises one or more of a null subcarrier, a guard subcarrier, and a pilot subcarrier.

5. A method, according to any one of claims 1 to 4, characterized in that the PPDU comprises a plurality of orthogonal frequency division multiplexing (OFDM) symbols, and the selection of a guard interval value among the plurality of OFDM symbols is related to the second set of subcarriers.

6. Method according to claim 5, characterized in that the guard interval comprises one or more of a cyclic prefix, a cyclic suffix, and a fixed sequence.

7. A method of transmitting information, characterized in that it comprises: sending, by a first device, a physical protocol data unit, PPDU, to a second device, wherein the PPDU comprises a data subcarrier and a reference subcarrier, wherein the reference subcarrier indicates an adjustment factor, the adjustment factor indicates a coefficient by which a part or all of the data subcarriers in the data subcarriers are multiplied, and the coefficient is used to reduce a PAPR.

8. Method according to claim 7, characterized in that the reference subcarrier comprises one or more pilot subcarriers, a data subcarrier, a null subcarrier, and a guard subcarrier.

9. Information transmission method, characterized in that it comprises: receiving, by a second device, a physical protocol data unit, PPDU, from a first device, wherein the PPDU comprises resource unit allocation information, the resource unit allocation information indicates one or more resource units, the resource unit allocation information further indicates that the one or more resource units comprise a first set of subcarriers and a second set of subcarriers, and the first set of subcarriers and the second set of subcarriers do not overlap, wherein the PPDU comprises first data in the first set of subcarriers and a sequence in the second set of subcarriers, and the sequence is used to reduce a PAPR.

10. A method according to claim 9, characterized in that the resource unit allocation information comprises one or more user fields, and a user field whose identifier is a special value in one or more user fields indicates the second set of subcarriers; or the resource unit allocation information indicates that part or all of one or more resource units comprise only the second set of subcarriers.

11. Method according to claim 9, characterized in that the resource unit allocation information is carried in a perforated channel information field.

12. A method according to any one of claims 9 to 11, characterized in that the second set of subcarriers comprises one or more of a null subcarrier, a guard subcarrier, and a pilot subcarrier.

13. A method, according to any one of claims 9 to 12, characterized in that the PPDU comprises a plurality of orthogonal frequency division multiplexing (OFDM) symbols, and the selection of a guard interval value among the plurality of OFDM symbols is related to the second set of subcarriers.

14. Method according to claim 13, characterized in that the guard interval comprises one or more of a cyclic prefix, a cyclic suffix and a fixed sequence.

15. Information transmission method, characterized in that it comprises: Petition 870250086893, dated 09 / 25 / 2025, page 114 / 123 4 / 6 receiving, by a second device, a physical protocol data unit, PPDU, from a first device, wherein the PPDU comprises a data subcarrier and a reference subcarrier, wherein the reference subcarrier indicates an adjustment factor, the adjustment factor indicates a coefficient by which a part or all of the data subcarriers in the data subcarriers are multiplied, and the coefficient is used to reduce a PAPR; and dividing, by the second device, the part or all of the data subcarriers by the coefficient, to obtain an original value of the part or all of the data subcarriers.

16. Method, according to claim 15, characterized in that the reference subcarrier comprises one or more pilot subcarriers, a data subcarrier, a null subcarrier, and a guard subcarrier.

17. Communication apparatus, characterized in that it comprises a unit configured to perform the method as defined in any one of claims 1 to 6, or comprising a unit configured to perform the method as defined in claim 7 or 8.

18. Communication apparatus, characterized in that it comprises a unit configured to perform the method as defined in any one of claims 9 to 14, or comprising a unit configured to perform the method as defined in claim 15 or 16.

19. Communication apparatus, characterized in that it comprises: a processor and a memory, wherein the memory is configured to store a computer program or instructions; and the processor is configured to execute the computer program or instructions in memory, to enable the apparatus to perform the method as defined in any one of claims 1 to 6, enable the apparatus to perform the method as defined in claim 7 or 8, enable the apparatus to perform the method as defined in any one of claims 9 to 14, or enable the apparatus to perform the method as defined in claim 15 or 16.

20. Computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions and, when the computer-executable instructions are invoked by an electronic device, the electronic device is enabled to perform the method as defined in any one of claims 1 to 6, the electronic device is enabled to perform the method as defined in claim 7 or 8, the electronic device is enabled to perform the method as defined in any one of claims 9 to 14, or the electronic device is enabled to perform the method as defined in claim 15 or 16.

21. Computer program product, characterized in that it comprises computer-executable instructions, wherein, when the computer-executable instructions are executed on a computer, the computer is enabled to perform the method as defined in any one of claims 1 to 16.

22. Chip system, characterized in that the chip system comprises: a communication interface; and a processor, configured to invoke and execute instructions through the communication interface, to enable a device in which the chip system is installed to perform the method as defined in any one of claims 1 to 6, enable a device in which the chip system is installed to perform the method as defined in claim 7 or 8, enable a device in which the chip system is installed to perform the method as defined in any one of claims 9 to 14, or enable a device in which the chip system is installed to perform the method as defined in claim 15 or 16.

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