Wireless signal sending method and device, wireless signal receiving method and device, equipment and medium

Abstract

The invention discloses a wireless signal sending method and device, a wireless signal receiving method and device, equipment and a medium, and belongs to the technical field of communication. The method comprises the following steps: transmitting the wireless signal by using a first type of DRU; wherein the first type DRU comprises data subcarriers and non-data subcarriers, the ratio of the number of the non-data subcarriers to the total number of the data subcarriers and the non-data subcarriers exceeds one thirteenth, and the non-data subcarriers comprise at least one of pilot frequency subcarriers and interference elimination subcarriers. The transmission distance of wireless signals can be increased, and the transmission reliability can be improved at the same time.

Description

Wireless signal transmission method, reception method, device, equipment and medium Technical Field

[0001] The embodiments of the present application relate to the field of communication technologies, and in particular to a method for sending and receiving wireless signals, a device, an equipment, and a medium. Background Art

[0002] Related technologies suggest that interleaving more pilot subcarriers (also known as interference cancellation subcarriers) within data subcarriers can improve the reliability of wireless signal transmission. Furthermore, spreading the subcarriers in smaller resource units (RUs) across a larger bandwidth can enable wireless signal transmission over longer distances.

[0003] However, there is still no clear solution for improving the reliability of transmitting wireless signals after dispersing the subcarriers in a smaller RU into a larger bandwidth.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a method for transmitting and receiving wireless signals, a method, an apparatus, a device, and a medium. The technical solution is as follows:

[0006] According to one aspect of an embodiment of the present application, a method for transmitting a wireless signal is provided, the method comprising:

[0007] using a first type DRU to transmit the wireless signal;

[0008] The first type DRU includes data subcarriers and non-data subcarriers, the ratio of the number of the non-data subcarriers to the total number of the data subcarriers and the non-data subcarriers is more than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

[0009] According to another aspect of an embodiment of the present application, a method for receiving a wireless signal is provided, the method comprising:

[0010] receiving the wireless signal sent using the first type DRU;

[0011] The first type DRU includes data subcarriers and non-data subcarriers, the ratio of the number of the non-data subcarriers to the total number of the data subcarriers and the non-data subcarriers is more than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

[0012] According to another aspect of an embodiment of the present application, a method for transmitting a wireless signal is provided, the method comprising:

[0013] Using a DRU group to send the wireless signal;

[0014] The DRU group includes adjacent first-type DRUs and second-type DRUs, all or part of the data subcarriers in the first-type DRUs are used as non-data subcarriers of the DRU group, the ratio of the number of non-data subcarriers of the DRU group to the number of all subcarriers of the DRU group is more than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

[0015] According to another aspect of an embodiment of the present application, a method for receiving a wireless signal is provided, the method comprising:

[0016] receiving the wireless signal sent using the DRU group;

[0017] The DRU group includes adjacent first-type DRUs and second-type DRUs, all or part of the data subcarriers in the first-type DRUs are used as non-data subcarriers of the DRU group, the ratio of the number of non-data subcarriers of the DRU group to the number of all subcarriers of the DRU group is more than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

[0018] According to another aspect of an embodiment of the present application, a device for transmitting a wireless signal is provided, the device comprising:

[0019] a sending module, configured to send the wireless signal using a first type DRU;

[0020] The first type DRU includes data subcarriers and non-data subcarriers, the ratio of the number of the non-data subcarriers to the total number of the data subcarriers and the non-data subcarriers is more than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

[0021] According to another aspect of an embodiment of the present application, a device for receiving a wireless signal is provided, the device comprising:

[0022] a receiving module, configured to receive the wireless signal sent using the first type DRU;

[0023] The first type DRU includes data subcarriers and non-data subcarriers, the ratio of the number of the non-data subcarriers to the total number of the data subcarriers and the non-data subcarriers is more than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

[0024] According to another aspect of an embodiment of the present application, a device for transmitting a wireless signal is provided, the device comprising:

[0025] A sending module, configured to send the wireless signal using a DRU group;

[0026] The DRU group includes adjacent first-type DRUs and second-type DRUs, all or part of the data subcarriers in the first-type DRUs are used as non-data subcarriers of the DRU group, the ratio of the number of non-data subcarriers of the DRU group to the number of all subcarriers of the DRU group is more than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

[0027] According to another aspect of an embodiment of the present application, a device for receiving a wireless signal is provided, the device comprising:

[0028] A receiving module, configured to receive the wireless signal sent using the DRU group;

[0029] The DRU group includes adjacent first-type DRUs and second-type DRUs, all or part of the data subcarriers in the first-type DRUs are used as non-data subcarriers of the DRU group, the ratio of the number of non-data subcarriers of the DRU group to the number of all subcarriers of the DRU group is more than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

[0030] According to another aspect of an embodiment of the present application, a communication device is provided, the communication device including:

[0031] processor;

[0032] a transceiver connected to the processor;

[0033] a memory for storing executable instructions for the processor;

[0034] The processor is configured to load and execute executable instructions to implement the wireless signal sending method and / or receiving method as described in the above aspects.

[0035] According to another aspect of an embodiment of the present application, a computer-readable storage medium is provided, which stores a computer program. The computer program is loaded and executed by a communication device to implement a method for sending and / or receiving a wireless signal as described in the above aspects.

[0036] According to another aspect of an embodiment of the present application, a computer program product or computer program is provided, which includes computer instructions, and the computer instructions are stored in a computer-readable storage medium; a communication device reads the computer instructions from the computer-readable storage medium, and a processor executes the computer instructions to implement a method for sending and / or receiving a wireless signal as described in the above aspects.

[0037] The technical solutions provided by the embodiments of the present application may have the following beneficial effects:

[0038] By using the first-type DRU to transmit wireless signals, not only can wireless signals be transmitted over longer distances, but the reliability of wireless signal transmission can also be improved. Because the subcarriers in the first-type DRU are dispersed over a larger bandwidth, each data subcarrier in the first-type DRU can use more energy to transmit wireless signals, thereby enabling wireless signal transmission over longer distances. Furthermore, the ratio of the number of non-data subcarriers to the total number of subcarriers in the first-type DRU is greater than 13th, meaning that the first-type DRU has more non-data subcarriers, resulting in higher reliability in wireless signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] FIG1 shows a schematic diagram of a resource unit provided by the related art;

[0040] FIG2 shows a schematic diagram of a resource unit provided by the related art;

[0041] FIG3 is a schematic diagram showing subcarriers in a resource unit provided by the related art;

[0042] FIG4 shows a schematic diagram of subcarriers in a resource unit provided by the related art;

[0043] FIG5 is a schematic diagram showing subcarriers in a resource unit provided by the related art;

[0044] FIG6 shows a schematic diagram of subcarriers in a resource unit provided by the related art;

[0045] FIG7 shows a schematic diagram of subcarriers in a resource unit provided by the related art;

[0046] FIG8 is a schematic diagram showing subcarriers in a resource unit provided by the related art;

[0047] FIG9 shows a schematic diagram of subcarriers in a resource unit provided by the related art;

[0048] FIG10 shows a schematic diagram of a communication system provided in an embodiment of the present application;

[0049] FIG11 shows a flowchart of a method for transmitting a wireless signal according to an embodiment of the present application;

[0050] FIG12 shows a flowchart of a method for transmitting a wireless signal according to an embodiment of the present application;

[0051] FIG13 is a schematic diagram showing target indication information provided by an embodiment of the present application;

[0052] FIG14 is a schematic diagram showing target indication information provided by an embodiment of the present application;

[0053] FIG15 is a schematic diagram showing target indication information provided by an embodiment of the present application;

[0054] FIG16 shows a schematic diagram of target indication information provided by an embodiment of the present application;

[0055] FIG17 shows a flowchart of a method for receiving a wireless signal provided in an embodiment of the present application;

[0056] FIG18 shows a flowchart of a method for transmitting a wireless signal according to an embodiment of the present application;

[0057] FIG19 shows a flowchart of a method for transmitting a wireless signal according to an embodiment of the present application;

[0058] FIG20 shows a flowchart of a method for receiving a wireless signal provided in an embodiment of the present application;

[0059] FIG21 shows a structural block diagram of a wireless signal transmitting device provided in an embodiment of the present application;

[0060] FIG22 shows a structural block diagram of a wireless signal receiving device provided in an embodiment of the present application;

[0061] FIG23 shows a structural block diagram of a wireless signal transmitting device provided in an embodiment of the present application;

[0062] FIG24 shows a structural block diagram of a wireless signal receiving device provided in an embodiment of the present application;

[0063] Figure 25 shows a structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail with reference to the accompanying drawings. The exemplary embodiments will be described in detail here, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims. With respect to the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0065] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items. It should be understood that although the terms first, second, third, etc. may be used to describe various information in this disclosure, these information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0066] First, the relevant technologies involved in the embodiments of this application are introduced:

[0067] Resource elements and pilot subcarriers:

[0068] Referring to standard 80211-2020, for High Efficiency (HE) sites, the positions of RUs of various sizes in 20 MHz, 40 MHz, and 80 MHz HE physical layer protocol data units (PPDUs) are also different. For example, the position of an RU in a 20 MHz HE PPDU is shown in FIG1 , and the position of an RU in a 40 MHz HE PPDU is shown in FIG2 . Furthermore, the position of an RU in an 80 MHz HE PPDU can refer to the combination of the positions of two RUs in a 40 MHz HE PPDU, and the position of an RU in a 160 MHz HE PPDU can refer to the combination of the positions of four RUs in a 40 MHz HE PPDU. Other combinations are possible.

[0069] For Extremely High Throughput (EHT) sites, the positions of RUs of various sizes in 20 MHz, 40 MHz, and 80 MHz EHT PPDUs are also different. Specifically, the position of the RU in a 20 MHz EHT PPDU is the same as the position of the RU in a 20 MHz HE PPDU, as shown in Figure 1 above. The position of the RU in a 40 MHz EHT PPDU is the same as the position of the RU in a 40 MHz HE PPDU, as shown in Figure 2 above. Many other combinations are possible.

[0070] For HE sites, each 26-tone RU contains 2 pilot subcarriers (pilot tones), each 52-tone RU contains 4 pilot subcarriers, each 106-tone RU contains 4 pilot subcarriers, each 242-tone RU contains 8 pilot subcarriers, each 484-tone RU contains 16 pilot subcarriers, and each 996-tone RU contains 16 pilot subcarriers. It should be understood that tone and subcarrier are different expressions of the same meaning.

[0071] For example, for a user transmitting on the i-th 26-channel RU on a given PPDU bandwidth (Band Width, BW), the positions of the two pilot subcarriers on each 26-channel RU are shown in Table 1 below:

[0072] Table 1

[0073] For example, for a user transmitting on the i-th 52-channel RU on a given PPDU BW, the positions of the four pilot subcarriers on each 52-channel RU are shown in Table 2 below:

[0074] Table 2

[0075] For example, for a user transmitting on the i-th 106-channel RU on a given PPDU BW, the positions of the four pilot subcarriers on each 106-channel RU are shown in Table 3 below:

[0076] Table 3

[0077] For example, for a user transmitting on the i-th 242-channel RU on a given PPDU BW, the positions of the 8 pilot subcarriers on each 242-channel RU are shown in Table 4 below:

[0078] Table 4

[0079] For example, for a user transmitting on the i-th 484-channel RU on a given PPDU BW, the positions of the 16 pilot subcarriers on each 484-channel RU are shown in Table 5 below:

[0080] Table 5

[0081] For example, for a user transmitting on the i-th 996-channel RU on a given PPDU BW, the positions of the 16 pilot subcarriers on each 996-channel RU are shown in Table 6 below:

[0082] Table 6

[0083] For EHT sites, the number and position of pilot subcarriers in 20 MHz and 40 MHz EHT PPDUs of 26-channel RU, 52-channel RU, 106-channel RU, 242-channel RU, and 484-channel RU remain consistent with those in HE PPDU.

[0084] For EHT sites, the number of pilot subcarriers in the 26-channel RU, 52-channel RU, 106-channel RU, 242-channel RU, 484-channel RU, and 996-channel RU at 80 MHz, 160 MHz, 80+80 MHz, and 320 MHz EHT PPDUs remains the same as in the HE PPDUs, but the positions are slightly different.

[0085] Add pilot subcarriers:

[0086] See proposal 11-23-1490-00-0uhr-physical-layer-reliability-improvements. The proposal suggests that interleaving more pilot subcarriers in the data subcarriers can improve transmission reliability. For example, as shown in Figure 3, the 26-channel RU in the related art contains 2 pilot subcarriers and 24 data subcarriers. Then, using more pilot subcarriers and fewer data subcarriers in the 26-channel RU can improve transmission reliability. In this way, the receiver of the signal can use more antennas than the number of spatial streams (NSS) of received data to achieve interference reduction. There can be many specific interference reduction algorithms, for example, the minimum variance distortionless response (MVDR) method can be used. For example, assume that the transmission model is as follows: y = hs + ρn + gr

[0087] Where y represents the received signal, s represents the original signal, h represents the channel through which the original signal s passes during transmission, ρ represents the noise intensity, n represents the additive white Gaussian noise (AWGN), r represents the interference signal, and g represents the channel through which the interference signal r passes.

[0088] Among them, ρ satisfies SNR stands for signal-to-noise ratio. The estimated value of the signal receiver for channel h is h*, and the estimated value for channel g is g*. Then the covariance of noise and interference is C = ρ 2 I+gg * If the covariance is estimated using more pilot subcarriers, the original signal can be estimated more accurately:

[0089] However, the above proposal does not provide a specific solution or signaling for interleaving more pilot subcarriers in the data subcarriers.

[0090] Distributed Resource Unit (DRU):

[0091] See proposal 11-23-0037-00-0uhr-uhr-feature-to-overcome-psd-limitations-distributed-tone-resource-units. The proposal proposes to disperse the subcarriers of the smaller RU into a larger bandwidth to obtain at least one DRU. As a result, when transmitting wireless signals, the transmitter device of the wireless signal can use subcarriers with larger intervals on a larger bandwidth, and can use more energy to transmit on each subcarrier, thereby achieving the effect of increasing the transmission distance. In order to make the total transmission power higher, these subcarriers should be dispersed into a larger bandwidth as much as possible. For example, the theoretical optimum is 1 channel per MHz. In order to control the implementation complexity, the size of the DRU obtained by dispersing the subcarriers of the smaller RU into a larger bandwidth should be consistent with the size of the RU in the relevant technology. For example, as shown in Figure 4, the subcarriers of the smaller RU are dispersed into a larger bandwidth to obtain three DRUs. The number of subcarriers in each DRU is the same as the number of subcarriers in one RU, that is, the size of each DRU should be consistent with the size of the RU in the relevant technology.

[0092] In the embodiment of the present application, an example is given of distributing the subcarriers in a 26-channel RU to a larger bandwidth to obtain a 26-channel DRU.

[0093] Design of pilot subcarriers in DRU:

[0094] See 11-23-1115-00-0uhr-cfo-impact-and-pilot-design-for-dru. The proposal proposes the following two ways to design pilot subcarriers in the DRU:

[0095] Option 1: Define new pilot subcarriers. For each 26-channel DRU, select the 7th and 20th subcarriers as pilot subcarriers. For example, as shown in Figure 5, the 26 subcarriers in a 26-channel DRU are distributed over a large bandwidth. According to the new definition of pilot subcarriers in the DRU, the 7th and 20th subcarriers are pilot subcarriers.

[0096] Option 2: Use the pilot subcarriers defined in the related art. That is, the x-th DRU contains 24 scattered data subcarriers and the x-th RU contains 2 pilot subcarriers. For example, as shown in Figure 6, the 26 subcarriers in a 26-channel DRU are scattered over a large bandwidth, where the positions of the two pilot subcarriers are the same as those in the related art. This option is more sensitive to carrier frequency offset (CFO) errors, so the performance of Option 2 is not as good as that of Option 1.

[0097] See 11-23-1447-00-0uhr-cfo-impact-and-pilot-design-for-dru-follow-up. This proposal proposes a third way to design pilot subcarriers in DRU:

[0098] Option 3: Use the pilot subcarriers in the related art, but disperse them as much as possible. That is, the x-th DRU contains 24 dispersed data subcarriers and dispersed pilot subcarriers in the related art. For example, in the related art, for a 20MHz bandwidth, there are 18 pilot subcarriers, and these pilot subcarriers are dispersedly allocated to x 26-channel DRUs. For example, as shown in Figure 7, the first pilot subcarrier and the tenth pilot subcarrier of the 18 pilot subcarriers are allocated as a group to the first 26-channel DRU, and the second pilot subcarrier and the eleventh pilot subcarrier of the 18 pilot subcarriers are allocated as a group to the second 26-channel DRU. This option is an optimization of Option 2, and its performance is comparable to that of Option 1.

[0099] See 11-23-1117-00-0uhr-dru-signaling-for-uhr. This proposal designs a tone plan for DRUs in 20MHz, 40MHz, and 80MHz. The resource unit allocation field value (RU Allocation field) from the related art is reused to indicate DRU allocation information. DRUs and RUs will not be used in the same 20MHz band at the same time. Larger DRUs are composed of smaller DRUs.

[0100] For example, as shown in Figure 8, among all the RUs in the 20 MHz frequency band, one subcarrier is alternately allocated to the first, second, and ninth DRUs in ascending order of frequency, and then to the first, second, and ninth DRUs, until all allocations are completed. That is, each DRU selects one subcarrier from every nine subcarriers.

[0101] Specifically, the communication plan for DRU at 20MHz is as follows:

[0102] 52-way DRU1 = 26-way DRU1 + 26-way DRU6;

[0103] 52-way DRU2 = 26-way DRU2 + 26-way DRU7;

[0104] 52-way DRU3 = 26-way DRU3 + 26-way DRU8;

[0105] 52-way DRU4 = 26-way DRU4 + 26-way DRU9;

[0106] 106-channel DRU1 = 52-channel DRU1 + 52-channel DRU3 + 2 empty subcarriers;

[0107] 106-channel DRU2 = 52-channel DRU2 + 52-channel DRU4 + 2 empty subcarriers;

[0108] Specifically, the communication plan for DRU at 40MHz is as follows:

[0109] 52-way DRU1 = 26-way DRU1 + 26-way DRU10;

[0110] 52-way DRU2 = 26-way DRU2 + 26-way DRU11;

[0111] 52-way DRU3 = 26-way DRU3 + 26-way DRU12;

[0112] 52-way DRU4 = 26-way DRU4 + 26-way DRU13;

[0113] 52-way DRU5 = 26-way DRU6 + 26-way DRU15;

[0114] 52-way DRU6 = 26-way DRU7 + 26-way DRU16;

[0115] 52-way DRU7 = 26-way DRU8 + 26-way DRU17;

[0116] 52-way DRU8 = 26-way DRU9 + 26-way DRU18;

[0117] 106-channel DRU1 = 52-channel DRU1 + 52-channel DRU5 + 2 empty subcarriers;

[0118] 106-channel DRU2 = 52-channel DRU2 + 52-channel DRU6 + 2 empty subcarriers;

[0119] 106-channel DRU3 = 52-channel DRU3 + 52-channel DRU7 + 2 empty subcarriers;

[0120] 106-channel DRU4 = 52-channel DRU4 + 52-channel DRU8 + 2 empty subcarriers;

[0121] 242-channel DRU1 = 106-channel DRU1 + 106-channel DRU3 + 26-channel DRU5 + 4 empty subcarriers;

[0122] 242-channel DRU2 = 106-channel DRU2 + 106-channel DRU4 + 26-channel DRU14 + 4 empty subcarriers;

[0123] Specifically, the communication plan for DRU at 80MHz is as follows:

[0124] 52-way DRU1 = 26-way DRU1 + 26-way DRU19;

[0125] 52-way DRU2 = 26-way DRU2 + 26-way DRU20;

[0126] 52-way DRU3 = 26-way DRU3 + 26-way DRU21;

[0127] 52-way DRU4 = 26-way DRU4 + 26-way DRU22;

[0128] 52-way DRU5 = 26-way DRU6 + 26-way DRU24;

[0129] 52-way DRU6 = 26-way DRU7 + 26-way DRU25;

[0130] 52-way DRU7 = 26-way DRU8 + 26-way DRU26;

[0131] 52-way DRU8 = 26-way DRU9 + 26-way DRU27;

[0132] 52-way DRU9 = 26-way DRU10 + 26-way DRU28;

[0133] 52-way DRU10 = 26-way DRU11 + 26-way DRU29;

[0134] 52-way DRU11 = 26-way DRU12 + 26-way DRU30;

[0135] 52-way DRU12 = 26-way DRU13 + 26-way DRU31;

[0136] 52-way DRU13 = 26-way DRU15 + 26-way DRU33;

[0137] 52-way DRU14 = 26-way DRU16 + 26-way DRU34;

[0138] 52-way DRU15 = 26-way DRU17 + 26-way DRU35;

[0139] 52-way DRU16 = 26-way DRU18 + 26-way DRU36;

[0140] 106-channel DRU1 = 52-channel DRU1 + 52-channel DRU9 + 2 empty subcarriers;

[0141] 106-channel DRU2 = 52-channel DRU2 + 52-channel DRU10 + 2 empty subcarriers;

[0142] 106-channel DRU3 = 52-channel DRU3 + 52-channel DRU11 + 2 empty subcarriers;

[0143] 106-channel DRU4 = 52-channel DRU4 + 52-channel DRU12 + 2 empty subcarriers;

[0144] 106-channel DRU5 = 52-channel DRU5 + 52-channel DRU13 + 2 empty subcarriers;

[0145] 106-channel DRU6 = 52-channel DRU6 + 52-channel DRU14 + 2 empty subcarriers;

[0146] 106-channel DRU7 = 52-channel DRU7 + 52-channel DRU15 + 2 empty subcarriers;

[0147] 106-channel DRU8 = 52-channel DRU8 + 52-channel DRU16 + 2 empty subcarriers;

[0148] 242-channel DRU1 = 106-channel DRU1 + 106-channel DRU5 + 26-channel DRU5 + 4 empty subcarriers;

[0149] 242-channel DRU2 = 106-channel DRU2 + 106-channel DRU6 + 26-channel DRU14 + 4 empty subcarriers;

[0150] 242-channel DRU3 = 106-channel DRU3 + 106-channel DRU7 + 26-channel DRU23 + 4 empty subcarriers;

[0151] 242-channel DRU4 = 106-channel DRU4 + 106-channel DRU8 + 26-channel DRU32 + 4 empty subcarriers;

[0152] 484 accesses to DRU1 = 242 accesses to DRU1 + 242 accesses to DRU3;

[0153] 484 connections to DRU2 = 242 connections to DRU2 + 242 connections to DRU4;

[0154] Generally, the above-mentioned null subcarriers exist between 26-channel RUs or 52-channel RUs. In 106-channel RUs, 242-channel RUs, or 484-channel RUs, the null subcarriers are used as data subcarriers.

[0155] See 11-23-1448-00-0uhr-further-considerations-on-dru. This proposal suggests that a DRU design is also required for 160MHz bandwidth. The proposal also proposes the following two DRU design options when preamble puncturing is present:

[0156] Solution 1: Design a new communication plan to spread the subcarriers across the entire occupied channel. For example, when 20 MHz of the 80 MHz channel is punctured, spread the subcarriers across the occupied 60 MHz. This option offers better performance.

[0157] Solution 2: Combine existing DRU plans, for example, combine 20MHz and 40MHz DRU plans to form a 60MHz DRU plan. This option is relatively simple to implement.

[0158] The proposal also suggests that it is necessary to define a small DRU in a smaller bandwidth, but it may not be necessary in a larger bandwidth. For example, it is necessary to define a 26-channel DRU in a 20MHz bandwidth, but it may not be necessary in an 80MHz or 160MHz bandwidth.

[0159] The index of the pilot subcarrier in the DRU:

[0160] See 11-23-1511-01-0uhr-pilot-tone-allocation-and-other-considerations-of-tone-distributed-rus-for-uhr. This proposal provides the pilot subcarrier index at 20MHz for the above three methods of designing pilot subcarriers in DRU, see Table 7 below:

[0161] Table 7

[0162] The proposal also suggests that the design of DRUs needs to consider CFO errors and interference between resource units, but does not provide specific solutions.

[0163] The proposal also points out that the data subcarriers and pilot subcarriers in the related art are relatively close, so phase tracking can be started when processing the long training field (LTF). Therefore, the proposal also proposes that each DRU can select two or more consecutive subcarriers. For example, as shown in Figure 9, all subcarriers in 20MHz are alternately allocated 2 subcarriers in order of frequency from small to large to the first, second, up to the ninth DRU, and then to the first, second, up to the ninth DRU, until the allocation is completed.

[0164] Downlink (DL) DRU:

[0165] See 11-23-1516-00-0uhr-use-case-for-distributed-rus-in-downlink. The proposal points out that the above proposals all use DRUs in uplink transmission. The proposal points out that DRUs can also be used in downlink transmission. The proposal points out that the bit error rate (BER) curves of different resource units in the same channel vary greatly. Therefore, when performing rate adaptation, if the size and / or position of the RU of a certain site needs to be changed between transmissions, it may be necessary to re-measure the channel and / or change the modulation and coding scheme (MCS). However, the BER curves of different DRUs in the same channel vary less. Therefore, when using DRUs, rate adaptation can be independent of the position and size of the DRU, which can reduce the load and complexity when implementing rate adaptation.

[0166] Figure 10 is a schematic diagram of a communication system 10 provided by an exemplary embodiment of the present application. This communication system 10 includes terminals, terminals and network devices, or access points (APs) and stations (STAs), though this application does not limit this. This application uses the example of a communication system 10 including AP 110 and STA 120 for illustration.

[0167] In some scenarios, an AP may also be referred to as an AP STA, that is, in a sense, an AP is also a type of STA. In some scenarios, a STA may also be referred to as a non-AP STA.

[0168] In some embodiments, STAs may include AP STAs and non-AP STAs. Communication in a communication system may be between an AP and a non-AP STA, between a non-AP STA and a non-AP STA, or between a STA and a peer STA, wherein a peer STA may refer to a device that communicates with the STA peer, for example, a peer STA may be an AP or a non-AP STA. For example, there are two communication scenarios between a STA and an AP: an uplink communication scenario and a downlink communication scenario. Uplink communication refers to the STA sending a signal to the AP; downlink communication refers to the AP sending a signal to the STA. An AP is equivalent to a bridge connecting a wired network and a wireless network. Its main function is to connect various wireless network clients together and then connect the wireless network to the Ethernet. An AP device may be a terminal device (such as a mobile phone) or a network device (such as a router) with a Wireless Fidelity (WiFi) chip.

[0169] In some embodiments, different communication devices may use different DRUs when transmitting wireless signals.

[0170] It should be understood that the role of a STA in a communication system is not absolute. For example, in some scenarios, a mobile phone is a non-AP STA when connected to a router, but acts as an AP when serving as a hotspot for other phones. APs and non-AP STAs can be devices used in connected vehicles, IoT nodes and sensors in the Internet of Things (IoT), smart cameras, smart remote controls, smart water and electricity meters in smart homes, and sensors in smart cities.

[0171] In some embodiments, a non-AP STA may support, but is not limited to, the 802.11bf standard. A non-AP STA may also support various current and future 802.11 family wireless local area network (WLAN) standards, such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a. In some embodiments, an AP may be a device supporting the 802.11bf standard. An AP may also be a device supporting various current and future 802.11 family WLAN standards, such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

[0172] In the embodiments of the present application, a STA may be a mobile phone, tablet computer, computer, virtual reality (VR) device, augmented reality (AR) device, communication equipment used in industrial control, set-top box, communication equipment used in unmanned driving, vehicle-mounted communication equipment, communication equipment used in telemedicine, communication equipment used in smart grids, communication equipment used in transportation safety, communication equipment used in smart cities or smart homes, wireless communication chips, etc. WLAN technology may support frequency bands including, but not limited to, low frequency bands (2.4 GHz, 5 GHz, 6 GHz) and high frequency bands (60 GHz).

[0173] There are one or more links between the station and the access point. In some embodiments, the station and the access point support multi-band communication, for example, communicating simultaneously on the 2.4 GHz, 5 GHz, 6 GHz, and 60 GHz frequency bands, or communicating simultaneously on different channels in the same frequency band (or different frequency bands), thereby improving the communication throughput and / or reliability between devices. Such a device is generally referred to as a multi-band device, and may also be referred to as a multi-link device (MLD), and sometimes also referred to as a multi-link entity or a multi-band entity. A multi-link device can be an access point device or a station device. If the multi-link device is an access point device, the multi-link device includes one or more APs; if the multi-link device is a station device, the multi-link device includes one or more non-AP STAs. A multi-link device including one or more APs can also be referred to as an AP, and a multi-link device including one or more non-AP STAs can also be referred to as a non-AP. In the embodiment of the present application, a non-AP can be referred to as a STA.

[0174] In an embodiment of the present application, the AP may include multiple APs, the Non-AP includes multiple STAs, multiple links may be formed between the multiple APs in the AP and the multiple STAs in the Non-AP, and data communication may be performed between the APs in the AP and the corresponding STAs in the Non-AP through the corresponding links.

[0175] An AP is a device deployed in a wireless local area network to provide wireless communication capabilities for STAs. STAs may include: User Equipment (UE), Access Terminal, Subscriber Unit, Subscriber Station, Mobile Station, Mobile Station, Remote Station, Remote Terminal, Mobile Device, Wireless Communication Device, User Agent, or User Equipment. Optionally, a STA may also be a cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, vehicle-mounted device, or wearable device, but this embodiment of the present application is not limited to this.

[0176] In the embodiment of the present application, both the STA and the AP support the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, but are not limited to the IEEE 802.11 standard.

[0177] Related technologies suggest that when transmitting wireless signals, interleaving more pilot subcarriers (also known as interference cancellation subcarriers) within data subcarriers can improve transmission reliability, while also distributing the subcarriers of smaller RUs across a larger bandwidth can increase transmission range. However, after distributing the subcarriers of smaller RUs across a larger bandwidth, there remains no clear solution for improving the reliability of wireless signal transmission.

[0178] Based on the above-mentioned shortcomings, an embodiment of the present application proposes a method for transmitting wireless signals, which improves transmission reliability while increasing transmission distance by interleaving more pilot subcarriers in the data subcarriers of the DRU. Figure 11 shows a flowchart of a method for transmitting wireless signals provided by an exemplary embodiment of the present application. The method is performed by a first device, which is a signal transmitter and can be an AP or a STA. The method includes:

[0179] Step 220: Use the first type DRU to send a wireless signal.

[0180] In some embodiments, the first type DRU includes data subcarriers and non-data subcarriers, wherein the data subcarriers are used to transmit data signals, and the non-data subcarriers are subcarriers other than the data subcarriers among all subcarriers.

[0181] Optionally, the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers. In some embodiments, all non-data subcarriers are pilot subcarriers. In some embodiments, all non-data subcarriers are interference cancellation subcarriers. In some embodiments, a portion of the non-data subcarriers are pilot subcarriers and another portion are interference cancellation subcarriers. The pilot subcarriers can be multiplexed as interference cancellation subcarriers or the interference cancellation subcarriers can be multiplexed as pilot subcarriers. When pilot subcarriers and interference cancellation subcarriers can be multiplexed with each other, it is equivalent to all non-data subcarriers being pilot subcarriers or all non-data subcarriers being interference cancellation subcarriers. In some embodiments, the non-data subcarriers also include null subcarriers.

[0182] In some embodiments, the ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers is greater than 13. For example, assuming that the first type DRU is a 26-channel DRU, the number of non-data subcarriers in the first type DRU is greater than 2.

[0183] In some embodiments, a ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers is equal to or greater than two-thirteenth.

[0184] In some embodiments, a ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers is equal to or greater than one-fifth.

[0185] In some embodiments, a ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers is equal to or greater than three tenths.

[0186] In some embodiments, in order to ensure the stability of wireless signal transmission, the ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers should also be less than a quantity threshold. Optionally, the quantity threshold is predefined or dynamically adjusted based on the demand for wireless signal transmission. Optionally, the ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers is less than one-half. Optionally, the ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers is less than four-fifths.

[0187] In some embodiments, the first type DRU may also be referred to as an enhanced DRU (EDRU). Optionally, the first type DRU may be at least one of a 26-channel EDRU, a 52-channel EDRU, a 106-channel EDRU, a 242-channel EDRU, and a 484-channel EDRU. In the embodiments of the present application, a 26-channel EDRU is used as an example for illustration.

[0188] In some embodiments, the positions of all non-data subcarriers in the first type DRU are uniformly distributed. Optionally, the uniform distribution includes at least one of the following:

[0189] Evenly distributed among every 26 subcarriers;

[0190] Evenly distributed in the bandwidth corresponding to a first-type DRU;

[0191] Evenly distributed within the bandwidth of a subchannel.

[0192] In some embodiments, the positions of all non-data subcarriers in the first type DRU are evenly distributed among every 26 subcarriers. For example, the first type DRU includes 13 non-data subcarriers, and each non-data subcarrier is located at an even position among the 26 subcarriers or at an odd position among the 26 subcarriers.

[0193] In some embodiments, positions of all non-data subcarriers in the first type DRU are evenly distributed in the bandwidth corresponding to one first type DRU.

[0194] In some embodiments, the positions of all non-data subcarriers in the first type DRU are uniformly distributed in the bandwidth of one subchannel.

[0195] In some embodiments, the variance of the spacing between two adjacent non-data subcarriers in the first type DRU is less than a threshold. Optionally, the threshold is predefined or dynamically adjusted based on signal transmission conditions. That is, the positions of all non-data subcarriers in the first type DRU may not be completely evenly distributed, but are as evenly distributed as possible.

[0196] In some embodiments, the first type of DRU includes the following two possible designs:

[0197] Design 1: The positions of all non-data subcarriers in the first type DRU are different from the position of at least one non-data subcarrier in the second type DRU;

[0198] Design 2: The positions of some non-data subcarriers in the first type DRU are the same as the positions of all non-data subcarriers in the second type DRU.

[0199] The ratio of the number of non-data subcarriers in the second type DRU to the total number of data subcarriers and non-data subcarriers is 13. In some embodiments, the second type DRU can be understood as a traditional type DRU, that is, it can be understood as a DRU proposed in the above-mentioned related proposals. In the embodiments of the present application, the first type DRU has a larger proportion of non-data subcarriers than the second type DRU.

[0200] In summary, the method provided in this embodiment, by using the first type DRU to send wireless signals, can not only achieve the transmission of wireless signals over longer distances, but also improve the reliability of transmitting wireless signals. Since the subcarriers in the first type DRU are dispersed over a larger bandwidth, each data subcarrier in the first type DRU can use more energy to send wireless signals, thereby being able to transmit wireless signals over longer distances. In addition, the ratio of the number of non-data subcarriers in the first type DRU to the number of all subcarriers is more than thirteenth, that is, the number of non-data subcarriers in the first type DRU is greater, so the reliability of transmitting wireless signals is higher.

[0201] For Design 1:

[0202] In some embodiments, a Type-1 DRU includes n*26 subcarriers, where n is a positive integer. That is, in the Type-1 DRU, the number of subcarriers is an integer multiple of 26. Alternatively, the Type-1 DRU includes n*26 subcarriers and 0 null subcarriers, or includes n*26 subcarriers and 2 null subcarriers, or includes n*26 subcarriers and 4 null subcarriers. Each null subcarrier can also be used to transmit data.

[0203] It should be understood that the first type of DRU here can be at least one of a 26-channel DRU, a 52-channel DRU, a 106-channel DRU, a 242-channel DRU, and a 484-channel DRU. Every 26 subcarriers mentioned below refer to subcarriers in n*26 subcarriers. When the first type of DRU also includes an empty subcarrier, the empty subcarrier needs to be skipped. For example, when the first type of DRU is a 106-channel DRU, the 106-channel DRU can be considered to include 2 52-channel DRUs and 2 empty subcarriers, or understood to include 4 26-channel DRUs and 2 empty subcarriers. At this time, in a description similar to "the 3rd, 6th, 9th, 12th, 15th, 18th, 21st, and 24th subcarriers in every 26 subcarriers are non-data subcarriers", it can be regarded as skipping the empty subcarrier, and the 3rd, 6th, 9th, 12th, 15th, 18th, 21st, and 24th subcarriers in every 26 subcarriers are non-data subcarriers."

[0204] In some embodiments, in order to ensure that both the transmission distance and the transmission reliability can be improved during signal transmission, there is at least one non-data subcarrier in every k subcarriers in the first type DRU, and the value of k is 1 to 8.

[0205] In some embodiments, the positions of all non-data subcarriers in the first type DRU are different from the position of at least one non-data subcarrier in the second type DRU. That is, new positions of non-data subcarriers are defined in the first type DRU.

[0206] In some embodiments, the 3rd, 6th, 9th, 12th, 15th, 18th, 21st, and 24th subcarriers out of every 26 subcarriers in a first-type DRU are non-data subcarriers. The 9th and 21st subcarriers are pilot subcarriers, and the other 6 non-data subcarriers, excluding the 9th and 21st subcarriers, are interference cancellation subcarriers. Optionally, the 9th and 21st subcarriers are also multiplexed as interference cancellation subcarriers. Optionally, the other 6 non-data subcarriers, excluding the 9th and 21st subcarriers, are also pilot subcarriers.

[0207] For example, taking a 26-channel DRU of a 20MHz PPDU as an example, its subcarrier index is shown in Table 8 below:

[0208] Table 8

[0209] The 3rd, 6th, 9th, 12th, 15th, 18th, 21st, and 24th subcarriers in each first-type DRU are non-data subcarriers. For example, the non-data subcarriers in DRU 1 correspond to {-103, -76, -48, -21, 13, 40, 67, 95}. The 9th and 21st subcarriers are pilot subcarriers. For example, the pilot subcarriers in DRU 1 correspond to {-48, 67}. The 6 non-data subcarriers other than the 9th and 21st subcarriers are interference cancellation subcarriers. For example, the interference cancellation subcarriers in DRU 1 correspond to {-103, -76, -21, 13, 40, 95}. Interference cancellation subcarriers and pilot subcarriers can be multiplexed with each other. For example, interference cancellation subcarriers can be multiplexed as pilot subcarriers, and pilot subcarriers can also be multiplexed as interference cancellation subcarriers.

[0210] In some embodiments, the 2nd, 5th, 8th, 11th, 14th, 17th, 20th, 23rd, and 26th subcarriers of every 26 subcarriers in a first-type DRU are non-data subcarriers. The 8th and 20th subcarriers are pilot subcarriers, and the other 7 non-data subcarriers, excluding the 8th and 20th subcarriers, are interference cancellation subcarriers. Optionally, the 8th and 20th subcarriers are also multiplexed as interference cancellation subcarriers. Optionally, the other 7 non-data subcarriers, excluding the 8th and 20th subcarriers, are also pilot subcarriers.

[0211] It is worth noting that there may be many other combinations of the positions of the non-data subcarriers in the above-mentioned first type DRU, which are not listed one by one here. Any combination that can make the ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers exceed the ratio of the number of non-data subcarriers in the second type DRU to the total number of data subcarriers and non-data subcarriers falls within the scope of protection of the embodiments of the present application.

[0212] Similarly, for a 40 MHz PPDU, the route from 26-channel DRU1 to 26-channel DRU9 is generated from EDRU1 to EDRU9, and the route from 26-channel DRU10 to 26-channel DRU18 is generated from EDRU10 to EDRU18. For an 80 MHz PPDU, the route from 26-channel DRU1 to 26-channel DRU9 is generated from EDRU1 to EDRU9, the route from 26-channel DRU10 to 26-channel DRU18 is generated from EDRU10 to EDRU18, and the route from 26-channel DRU19 to 26-channel DRU28 is generated from EDRU19 to EDRU28. For 160 MHz PPDU, EDRU1 to EDRU9 are generated from 26-channel DRU1 to 26-channel DRU9, EDRU10 to EDRU18 are generated from 26-channel DRU10 to 26-channel DRU18, EDRU19 to EDRU28 are generated from 26-channel DRU19 to 26-channel DRU28, and EDRU29 to 26-channel DRU36 are generated from 26-channel DRU29 to 26-channel DRU36.

[0213] Similarly, for a 20 MHz PPDU, the same operation is performed on a 52-channel DRU and a 106-channel DRU to obtain corresponding 52-channel EDRU and a 106-channel EDRU.

[0214] Similarly, for a 40 MHz PPDU, the same operation is performed on a 52-channel DRU, a 106-channel DRU, and a 242-channel DRU to obtain corresponding 52-channel EDRU, 106-channel EDRU, and 242-channel EDRU.

[0215] Similarly, for the 160 MHz PPDU, the same operation is performed on the 52-channel DRU, 106-channel DRU, 242-channel DRU, and 484-channel DRU to obtain the corresponding 52-channel EDRU, 106-channel EDRU, 242-channel EDRU, and 484-channel EDRU.

[0216] In summary, the method provided in this embodiment, by redefining the non-data subcarriers in the first type DRU, achieves both increased transmission distance and improved transmission reliability when using the first type DRU to transmit wireless signals. Because the non-data subcarriers in the first type DRU and at least one non-data subcarrier in the second type DRU are located in different positions, the first type DRU and the second type DRU can be better distinguished.

[0217] For Design 2:

[0218] In some embodiments, the first type DRU includes n*26 subcarriers, where n is a positive integer. That is, in the first type DRU, the number of subcarriers is an integer multiple of 26.

[0219] In some embodiments, in order to ensure that both the transmission distance and the transmission reliability can be improved during signal transmission, there is at least one non-data subcarrier in every k subcarriers in the first type DRU, and the value of k is 1 to 8.

[0220] In some embodiments, the positions of some non-data subcarriers in the first type DRU are the same as the positions of all non-data subcarriers in the second type DRU. That is, the positions of some non-data subcarriers in the first type DRU are the same as the positions of pilot subcarriers in the three aforementioned methods of designing pilot subcarriers in the DRU.

[0221] In some embodiments, the positions of some non-data subcarriers in the first type DRU are the same as the positions of the pilot subcarriers in the first method of designing pilot subcarriers in the DRU described above. That is, the 7th subcarrier and the 20th subcarrier in every 26 subcarriers in the first type DRU are non-data subcarriers. Optionally, the first type DRU also includes at least one subcarrier other than the 7th subcarrier and the 20th subcarrier. Optionally, the first type DRU also includes at least three subcarriers other than the 7th subcarrier and the 20th subcarrier. Optionally, the first type DRU also includes at least five subcarriers other than the 7th subcarrier and the 20th subcarrier.

[0222] In some embodiments, the 1st, 4th, 7th, 10th, 13th, 16th, 20th, 23rd, and 26th subcarriers of every 26 subcarriers in the first type DRU are non-data subcarriers. The 7th and 20th subcarriers are pilot subcarriers located in the same positions in the first type DRU and the second type DRU, and the 7 non-data subcarriers other than the 7th and 20th subcarriers are interference cancellation subcarriers. Optionally, the 7th and 20th subcarriers are also multiplexed as interference cancellation subcarriers. Optionally, the 7 non-data subcarriers other than the 7th and 20th subcarriers are also pilot subcarriers.

[0223] In some embodiments, the 2nd, 5th, 7th, 10th, 13th, 18th, 20th, and 23rd subcarriers of every 26 subcarriers in the first type DRU are non-data subcarriers. The 7th and 20th subcarriers are pilot subcarriers located in the same positions in the first type DRU and the second type DRU, and the six non-data subcarriers other than the 7th and 20th subcarriers are interference cancellation subcarriers. Optionally, the 7th and 20th subcarriers are also multiplexed as interference cancellation subcarriers. Optionally, the six non-data subcarriers other than the 7th and 20th subcarriers are also pilot subcarriers.

[0224] In some embodiments, the 3rd, 6th, 7th, 9th, 12th, 15th, 18th, 20th, 21st, and 24th subcarriers out of every 26 subcarriers in the first type DRU are non-data subcarriers. The 7th and 20th subcarriers are pilot subcarriers located in the same positions in the first type DRU and the second type DRU, and the 8 non-data subcarriers other than the 7th and 20th subcarriers are interference cancellation subcarriers. Optionally, the 7th and 20th subcarriers are also multiplexed as interference cancellation subcarriers. Optionally, the 8 non-data subcarriers other than the 7th and 20th subcarriers are also pilot subcarriers.

[0225] It is worth noting that there may be many other combinations of the positions of the non-data subcarriers in the above-mentioned first type DRU, which are not listed one by one here. Any combination that can make the ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers exceed the ratio of the number of non-data subcarriers in the second type DRU to the total number of data subcarriers and non-data subcarriers falls within the scope of protection of the embodiments of the present application.

[0226] In some embodiments, the positions of some non-data subcarriers in the first type DRU are the same as the positions of the pilot subcarriers in the second method of designing pilot subcarriers in the DRU. That is, every 26 subcarriers in the first type DRU include at least pilot subcarriers at the same positions as those in the second type DRU. Optionally, the first type DRU also includes at least one subcarrier other than the pilot subcarrier at the same position as that in the second type DRU. Optionally, the first type DRU also includes at least three subcarriers other than the pilot subcarrier at the same position as that in the second type DRU. Optionally, the first type DRU also includes at least five subcarriers other than the pilot subcarrier at the same position as that in the second type DRU.

[0227] For example, a 26-channel DRU with a 20MHz PPDU is used as an example, as shown in Table 9 below:

[0228] Table 9

[0229] Each first-type DRU includes non-data subcarriers at the same positions as those in the second-type DRU, such as the bold and underlined positions in the above table. For example, if the positions of the non-data subcarriers in the second-type DRU corresponding to DRU1 are {-116, -102}, then the first-type DRU corresponding to DRU1 also includes two non-data subcarriers at {-116, -102}. In addition, the first-type DRU corresponding to DRU1 also includes non-data subcarriers at other positions, such as {-73, -39, 4, 40, 77, 113}.

[0230] It is worth noting that there may be many other combinations of the positions of the non-data subcarriers in the above-mentioned first type DRU, which are not listed one by one here. Any combination that can make the ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers exceed the ratio of the number of non-data subcarriers in the second type DRU to the total number of data subcarriers and non-data subcarriers falls within the scope of protection of the embodiments of the present application.

[0231] In some embodiments, the positions of some non-data subcarriers in the first type DRU are the same as the positions of the pilot subcarriers in the third method of designing pilot subcarriers in the DRU described above. That is, every 26 subcarriers in the first type DRU include at least pilot subcarriers at the same positions as those in the second type DRU. Optionally, the first type DRU also includes at least one subcarrier other than the pilot subcarrier at the same position as that in the second type DRU. Optionally, the first type DRU also includes at least three subcarriers other than the pilot subcarrier at the same position as that in the second type DRU. Optionally, the first type DRU also includes at least five subcarriers other than the pilot subcarrier at the same position as that in the second type DRU.

[0232] For example, a 26-channel DRU with a 20MHz PPDU is used as an example, as shown in Table 10 below:

[0233] Table 10

[0234] Each first-type DRU includes non-data subcarriers at the same positions as those in the second-type DRU, such as the bold and underlined positions in the above table. For example, if the positions of the non-data subcarriers in the second-type DRU corresponding to DRU1 are {-76, -48, 22}, then the first-type DRU corresponding to DRU1 also includes three non-data subcarriers at positions {-76, -48, 22}. In addition, the first-type DRU corresponding to DRU1 also includes non-data subcarriers at other positions, such as {-103, -21, 58, 86, 113}.

[0235] For example, a 26-channel DRU with a 20MHz PPDU is used as an example, as shown in Table 11 below:

[0236] Table 11

[0237] Each first-type DRU includes non-data subcarriers at the same positions as those in the second-type DRU, such as the bold and underlined positions in the above table. For example, if the positions of the non-data subcarriers in the second-type DRU corresponding to DRU1 are {-116, 10}, then the first-type DRU corresponding to DRU1 also includes two non-data subcarriers at positions {-116, 10}. In addition, the first-type DRU corresponding to DRU1 also includes non-data subcarriers at other positions, such as {-85, -43, -21, 49, 77, 104}.

[0238] It is worth noting that there may be many other combinations of the positions of the non-data subcarriers in the above-mentioned first type DRU, which are not listed one by one here. Any combination that can make the ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers exceed the ratio of the number of non-data subcarriers in the second type DRU to the total number of data subcarriers and non-data subcarriers falls within the scope of protection of the embodiments of the present application.

[0239] Similarly, for a 40 MHz PPDU, the route from 26-channel DRU1 to 26-channel DRU9 is generated from EDRU1 to EDRU9, and the route from 26-channel DRU10 to 26-channel DRU18 is generated from EDRU10 to EDRU18. For an 80 MHz PPDU, the route from 26-channel DRU1 to 26-channel DRU9 is generated from EDRU1 to EDRU9, the route from 26-channel DRU10 to 26-channel DRU18 is generated from EDRU10 to EDRU18, and the route from 26-channel DRU19 to 26-channel DRU28 is generated from EDRU19 to EDRU28. For 160 MHz PPDU, EDRU1 to EDRU9 are generated from 26-channel DRU1 to 26-channel DRU9, EDRU10 to EDRU18 are generated from 26-channel DRU10 to 26-channel DRU18, EDRU19 to EDRU28 are generated from 26-channel DRU19 to 26-channel DRU28, and EDRU29 to 26-channel DRU36 are generated from 26-channel DRU29 to 26-channel DRU36.

[0240] Similarly, for a 20 MHz PPDU, the same operation is performed on a 52-channel DRU and a 106-channel DRU to obtain corresponding 52-channel EDRU and a 106-channel EDRU.

[0241] Similarly, for a 40 MHz PPDU, the same operation is performed on a 52-channel DRU, a 106-channel DRU, and a 242-channel DRU to obtain corresponding 52-channel EDRU, 106-channel EDRU, and 242-channel EDRU.

[0242] Similarly, for the 160 MHz PPDU, the same operation is performed on the 52-channel DRU, 106-channel DRU, 242-channel DRU, and 484-channel DRU to obtain the corresponding 52-channel EDRU, 106-channel EDRU, 242-channel EDRU, and 484-channel EDRU.

[0243] To sum up, the method provided in this embodiment can reduce the signaling used to indicate all non-data subcarriers in the first type DRU, and instead reuse the signaling used to indicate all non-data subcarriers in the second type DRU, since the positions of some non-data subcarriers in the first type DRU are the same as the positions of all non-data subcarriers in the second type DRU, that is, the positions of all non-data subcarriers in the second type DRU are reused in the first type DRU, thereby reducing the signaling overhead.

[0244] FIG12 shows a flowchart of a method for transmitting a wireless signal provided by an exemplary embodiment of the present application. The method is performed by a first device, which is a signal transmitter and can be an AP or a STA. The method includes:

[0245] Step 320: Indicate whether to use the first type DRU based on the target indication information.

[0246] In some embodiments, the first device receives target indication information. The target indication information is used to indicate whether the first device uses a first type DRU. The target indication information includes at least one of the following fields:

[0247] First field;

[0248] The second field;

[0249] The third field.

[0250] Among them, the first field is used to indicate whether the first type DRU is used to transmit data in the uplink direction. Optionally, the first field is used to indicate whether the first type DRU is used to transmit data in the uplink direction based on triggering. In the uplink transmission based on triggering, when the signal receiver detects a certain degree of interference, in order to improve reliability, it is necessary to require the signal sender at a longer distance to use the first type DRU for uplink transmission. At this time, the signal receiver needs to indicate in the trigger frame, mainly to distinguish between RU and / or first type DRU and / or second type DRU.

[0251] In some embodiments, the first field is a field in a base trigger frame. The first field includes at least one of the following:

[0252] Efficient variant user information field;

[0253] Extremely high throughput variant user information field;

[0254] · Extremely reliable variant user information field;

[0255] General information fields;

[0256] Special user information fields.

[0257] In some embodiments, whether to use the first type DRU is indicated based on a reserved bit in the first field.

[0258] In some embodiments, the reserved bits in the HE variant User Info field and / or the EHT variant User Info and / or the Ultra High Reliability (UHR) variant User Info in the basic trigger frame indicate whether the first type DRU is used. Optionally, one reserved bit can be used for indication. Exemplarily, when the value of the reserved bit is the first value, it indicates that the RU is used, or that the first type DRU is not used; when the value of the reserved bit is the second value, it indicates that the first type DRU is used. Optionally, at least two reserved bits can be used for joint indication. Exemplarily, when the value of at least two reserved bits is the first value, it indicates that the RU is used; when the value of at least two reserved bits is the second value, it indicates that the first type DRU is used; when the value of at least two reserved bits is the third value, it indicates that the second type DRU is used.

[0259] In some embodiments, the reserved bits in the Common Info field and the Special User Info field in the basic trigger frame indicate whether the first type DRU is used. Optionally, the first field includes m bits, and each of the m bits corresponds to a subchannel. When the value of the i-th bit in the m bits is the first value, it is used to indicate that the subchannel associated with the i-th bit uses the first type DRU; when the value of the i-th bit in the m bits is the second value, it is used to indicate that the subchannel associated with the i-th bit does not use the first type DRU. The value of m is a positive integer, and the value of i is a positive integer less than or equal to m.

[0260] Exemplarily, as shown in FIG13 , a basic trigger frame includes at least one of a Media Access Control (MAC) frame header and a MAC frame body. The MAC frame header includes at least one of a frame control field, a duration field, a frame receiver address field, and a frame sender address field. The MAC frame body includes at least one of a general information field, a user information list field, a padding field, and a frame check field. The user information list field in the MAC frame body includes at least one of a special user information field and user information 1 through user information N fields. The special user information field in the user information list field in the MAC frame body includes at least one of an application key identifier (AID) field, a physical layer version flag field, an uplink bandwidth extension field, an EHT spatial multiplexing 1 field, an EHT spatial multiplexing 2 field, a universal signal (U-SIG) ignore and check field, a reserved field, and a user information field related to a trigger frame subclass. The user information field related to a trigger frame subclass in the special user information field in the user information list field in the MAC frame body includes at least a reserved field. The User Information 1 field in the User Information List field in the MAC frame body includes at least one of an AID field, a resource unit allocation field, an uplink forward error correction (FEC) coding type field, an uplink EHT modulation, demodulation, and coding category field, a reserved field, a spatial stream allocation or random access resource unit information field, an uplink target received power field, a primary and secondary field, and a trigger frame subclass-related user information field. The trigger frame subclass-related user information field in the User Information 1 field in the User Information List field in the MAC frame body includes at least one of a multi-user MAC Protocol Data Unit (MPDU) slot factor field, a traffic identifier (TID) aggregation limit field, a reserved field, and a preferred access category field. It is worth noting that the above fields are used as examples in the embodiments of the present application only. In other possible embodiments, the order, number, and hierarchical relationship between the above fields may be different, and the embodiments of the present application are not limited thereto.

[0261] Exemplarily, as shown in FIG14 , the general information field in the MAC frame body includes at least one of a trigger frame subtype field, an uplink length field, a field for whether there are more trigger frames, a field for whether channel measurement is required, an uplink bandwidth field, a guard interval (GI) and a HE-LTF type / or a transmission opportunity sharing mode field, a reserved field, a number of HE-LTF symbols and an intermediate code period field, a low-density parity check code (LDPC) additional symbol segmentation field, an AP transmit power field, a Pre-FEC filling factor field, an uplink spatial multiplexing field, a special user information field identification field, and an EHT reserved field. It is worth noting that the above-mentioned fields are only used as an example in the embodiment of the present application. In other possible embodiments, the order, quantity, and upper and lower attribution relationship between the above-mentioned fields may also be other situations, and the embodiment of the present application does not limit this.

[0262] In some embodiments, the second field is used to indicate whether a first-type DRU is used to transmit data in the uplink direction. Optionally, the second field is used to indicate whether a first-type DRU is used to transmit data in a non-triggered uplink direction. In a non-triggered uplink transmission, when a distant signal sender learns that a signal receiver is subject to a certain degree of interference, the signal sender may use a first-type DRU for uplink transmission to improve reliability.

[0263] In some embodiments, the second field includes at least one of the following fields:

[0264] Fields in the uplink multi-user physical layer protocol data unit (Multi User PPDU, MU PPDU);

[0265] Fields in the uplink HE single-user physical layer protocol data unit (Switch User PPDU, SU PPDU);

[0266] ·The first newly added field.

[0267] In some embodiments, whether the first type DRU is used to transmit data in the uplink direction is indicated in the HE-SIG-B or EHT-SIG or UHR-SIG field in the uplink MU PPDU.

[0268] In some embodiments, whether a first type DRU is used to transmit data in the uplink direction is indicated in the HE-SIG-A field of the uplink HE SU PPDU.

[0269] In some embodiments, whether the first type DRU is used to transmit data in the uplink direction is indicated in the first newly added field.

[0270] In some embodiments, the third field indicates whether a Type 1 DRU is used for downlink data transmission. During downlink transmission, the signal transmitter may use a Type 2 DRU to reduce rate adaptation load and complexity and / or to increase transmission distance. If the signal transmitter learns that a distant signal receiver is experiencing a certain degree of interference, the signal transmitter may use a Type 1 DRU for downlink transmission to improve reliability.

[0271] In some embodiments, the third field includes at least one of the following fields:

[0272] Fields in the downlink MU PPDU;

[0273] Fields in the downlink HE SU PPDU;

[0274] ·The second newly added field.

[0275] In some embodiments, the Common field in the UHR signal (UHR-SIG) field in the UHR MU PPDU for single-user transmission and / or the Disregard field and / or the Reserved field in the User Specific field indicate whether the first type DRU is used to transmit data in the downlink direction. Optionally, one bit in the above field can be used for indication. Exemplarily, when the value of the bit is the first value, it indicates that the RU is used, or that the first type DRU is not used; when the value of the bit is the second value, it indicates that the first type DRU is used. Optionally, at least two bits in the above field can be used for joint indication. Exemplarily, when the value of at least two bits is the first value, it indicates that the RU is used; when the value of at least two bits is the second value, it indicates that the first type DRU is used; when the value of at least two bits is the third value, it indicates that the second type DRU is used.

[0276] As shown in FIG15 , the UHR MU PPDU includes at least one of a Non-HT Short Training Sequence field, a Non-HT Long Training Sequence field, a Non-HT Signal field, a Repeated Non-HT Signal field, a Uniform Signal field, a UHR Signal field, a UHR Short Training Sequence field, a UHR Long Training Sequence field, a Packet Extension field, and a Data field. The UHR Signal field includes a content channel. The content channel is replicated and transmitted over 20 MHz. The content channel includes at least one of a General field and a User-Specific field. The General field further includes a Uniform Signal (U-SIG) Overflow field and a Non-Orthogonal Frequency Division Multiple Access (OFDMA) User Number field, which can be divided into two fields: the Uniform Signal (U-SIG) Overflow field and the Non-OFDMA User Number field. The Uniform Signal (U-SIG) Overflow field further includes at least one of a Spatial Multiplexing field, a Guard Interval and LIF Size field, an EHT-LTF Symbol Number field, an LDPC Extra Symbol Segment field, a Pre-FEC Padding Factor field, a Packet Extension Deambiguation field, and an Ignore field. The user-specific fields include a user field, a check code, a tail field, and a padding field. The user field, check code, and tail field include at least one of a site identifier field, a modulation and coding order field, a reserved field, a spatial stream number field, a beam training field, a coding field, a check code field, and a tail field. It is worth noting that the above fields are used only as examples in the embodiments of this application. In other possible embodiments, the order, number, and hierarchical relationships between the above fields may vary, and this embodiment of the application does not limit this.

[0277] In some embodiments, a general field and / or an ignored field and / or a reserved field in a user-specific field in a UHR-SIG field of a 20 MHz, 40 MHz, or 80 MHz UHR MU PPDU for orthogonal frequency division multiple access transmission indicates whether a first type DRU is used to transmit data in the downlink direction. Optionally, at least one bit in the four ignored fields is used to indicate whether the PPDU uses a first type DRU on a 20 MHz channel corresponding to the content channel. Optionally, a reserved field in the user-specific field is used to indicate whether the portion of the PPDU corresponding to the signal sender uses a first type DRU. Optionally, at least two fields are used to jointly indicate. For example, the ignored field and the reserved field in the user-specific field are used to jointly indicate whether the first type DRU is used.

[0278] As shown in FIG16 , the UHR MU PPDU includes at least one of a Non-HT Short Training Sequence field, a Non-HT Long Training Sequence field, a Non-HT Signal field, a Repeated Non-HT Signal field, a Uniform Signal field, a UHR Signal field, a UHR Short Training Sequence field, a UHR Long Training Sequence field, a Packet Extension field, and a Data field. The UHR Signal field includes two content channels. The content channel includes at least one of a General field and a User-Specific field. The General field further includes at least one of a Unified Signal (U-SIG) Overflow field, a Resource Unit Allocation field, a Check field, and a Tail field. The Unified Signal (U-SIG) Overflow field further includes at least one of a Spatial Multiplexing field, a Guard Interval and LIF Size field, an EHT-LTF Symbol Number field, an LDPC Extra Symbol Segment field, a Pre-FEC Padding Factor field, a Packet Extension Deambiguation field, and an Ignore field. The User-Specific field includes a User field, a Check Code, a Tail field, and a Padding field. The user field, checksum, and tail field include at least one of a site identifier field, a modulation and coding order field, a reserved field, a spatial stream number field, a beam training field, and a coding field. It is worth noting that the above fields are used only as examples in the embodiments of this application. In other possible embodiments, the order, number, and hierarchical relationship between the above fields may be different, and this embodiment of the application does not limit this.

[0279] In addition, the reserved field described in the embodiments of the present application is a description method for this field in the current communication protocol. After the reserved field is used to indicate whether the first type DRU is used, the name of the reserved field may also be other situations, which are not limited by the embodiments of the present application. Moreover, in the case where only some bits in the reserved field are needed to indicate whether the first type DRU is used, the reserved field may also be divided into a field used to indicate whether the first type DRU is used and a reserved field.

[0280] The Ignore field described in the embodiments of the present application is a description of this field in the current communication protocol. After the Ignore field is used to indicate whether the first type DRU is used, the name of the Ignore field may also be other situations, and the embodiments of the present application do not limit this. In addition, in the case where only some bits in the Ignore field are needed to indicate whether the first type DRU is used, the Ignore field may also be divided into a field used to indicate whether the first type DRU is used and an Ignore field.

[0281] Optional, refer to Table 12 below:

[0282] Table 12

[0283] In some embodiments, for a 20 MHz UHR MU PPDU, the value of the first bit in the Ignore field is used to indicate whether the first type DRU is used.

[0284] In some embodiments, for a 40 MHz UHR MU PPDU, the first bit in the Ignore field of content channel 1 is used to indicate whether a first type DRU is used on the lower 20 MHz, and the first bit in the Ignore field of content channel 2 is used to indicate whether a first type DRU is used on the upper 20 MHz.

[0285] In some embodiments, for an 80 MHz UHR MU PPDU, the 20 MHz channels from low to high frequencies are denoted as L20-1, L20-2, L20-3, and L20-4, respectively. The first bit in the ignore field of content channel 1 is used to indicate whether the first type DRU is used on L20-1. The second bit in the ignore field of content channel 1 is used to indicate whether the first type DRU is used on L20-3, the third bit in the ignore field of content channel 1 is used to indicate whether the first type DRU is used on L20-5, the fourth bit in the ignore field of content channel 1 is used to indicate whether the first type DRU is used on L20-7, the first bit in the ignore field of content channel 2 is used to indicate whether the first type DRU is used on L20-2, the second bit in the ignore field of content channel 2 is used to indicate whether the first type DRU is used on L20-4, the third bit in the ignore field of content channel 2 is used to indicate whether the first type DRU is used on L20-6, and the fourth bit in the ignore field of content channel 1 is used to indicate whether the first type DRU is used on L20-8.

[0286] Similarly, the ignore field and / or the reserved field in the general field and / or the user-specific field in the EHT-SIG field in the 160 MHz UHR MU PPDU for OFDMA transmission may indicate whether the first type DRU is used.

[0287] Similarly, the use of a Type 1 DRU can be indicated in the general field and / or the ignored field and / or the reserved field in the user-specific field of the EHT-SIG field in a 320 MHz UHR MU PPDU for OFDMA transmission. However, the above fields are currently insufficient to indicate all 20 MHz sub-channels in the entire 320 MHz. Therefore, the indication of whether a Type 1 DRU is used can be limited to only the primary 160 MHz or only the secondary 160 MHz. Alternatively, 8 bits can be added to the general field in the EHT-SIG field to indicate whether a Type 1 DRU is used on the corresponding 20 MHz sub-channels from L20-9 to L20-16.

[0288] To sum up, the method provided in this embodiment indicates whether to use the first type DRU to transmit the wireless signal through target indication information, so that the signal sender can determine whether to use the first type DRU when sending the wireless signal based on affirmative signaling, thereby avoiding confusion when the signal sender uses the first type DRU and the second type DRU.

[0289] It is worth noting that the above step 320 can be implemented as a separate embodiment, or the above step 320 can be implemented as a combined embodiment with the above step 220. In the case where the above step 320 can be implemented in combination with the above step 220 as a single embodiment, generally, step 320 is performed before step 220.

[0290] FIG17 shows a flowchart of a method for receiving a wireless signal provided by an exemplary embodiment of the present application. The method is performed by a second device, which is a signal receiver and can be an AP or a STA. The method includes:

[0291] Step 420: Receive a wireless signal sent using a first type DRU.

[0292] In some embodiments, the first type DRU includes data subcarriers and non-data subcarriers, wherein the data subcarriers are used to transmit data signals, and the non-data subcarriers are subcarriers other than the data subcarriers among all subcarriers.

[0293] In some embodiments, non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers. In some embodiments, all non-data subcarriers are pilot subcarriers. In some embodiments, all non-data subcarriers are interference cancellation subcarriers. In some embodiments, a portion of the non-data subcarriers are pilot subcarriers and another portion are interference cancellation subcarriers. Pilot subcarriers can be multiplexed as interference cancellation subcarriers, or interference cancellation subcarriers can be multiplexed as pilot subcarriers. When pilot subcarriers and interference cancellation subcarriers can be multiplexed with each other, it is equivalent to all non-data subcarriers being pilot subcarriers or all non-data subcarriers being interference cancellation subcarriers. In some embodiments, non-data subcarriers also include null subcarriers.

[0294] Specifically, the implementation of the first type DRU is detailed in step 220 above.

[0295] In some embodiments, the second device sends target indication information. The target indication information is used to indicate whether the first device uses the first type DRU. The target indication information includes at least one of the following fields:

[0296] First field;

[0297] The second field;

[0298] The third field.

[0299] Specifically, the implementation method of the target indication information is detailed in the above step 320.

[0300] FIG18 shows a flowchart of a method for transmitting a wireless signal provided by an exemplary embodiment of the present application. The method is performed by a first device, which is a signal transmitter and can be an AP or a STA. The method includes:

[0301] Step 520: Use the DRU group to send a wireless signal.

[0302] In some embodiments, a DRU group includes adjacent first-type DRUs and second-type DRUs. For example, a DRU group includes a 26-way DRU1 and a 26-way DRU2, where the 26-way DRU1 is a first-type DRU and the 26-way DRU2 is a second-type DRU.

[0303] In some embodiments, all or part of the data subcarriers in the first type DRU are used as non-data subcarriers of the DRU group, the ratio of the number of non-data subcarriers of the DRU group to the number of all subcarriers of the DRU group is greater than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

[0304] In some embodiments, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is equal to or greater than two-thirteenths. Alternatively, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is equal to or greater than one-fifth. Alternatively, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is equal to or greater than three-tenths.

[0305] In some embodiments, to ensure the stability of wireless signal transmission, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers should also be less than a quantity threshold. Optionally, the quantity threshold is predefined or dynamically adjusted based on the requirements of wireless signal transmission. Optionally, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is less than one-half. Optionally, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is less than four-fifths.

[0306] Specifically, the implementation method of the first type of DRU in the DRU group is detailed in the above step 220.

[0307] In some embodiments, the first device receives target indication information. The target indication information is used to indicate whether the first device uses a DRU group. Alternatively, the target indication information is used to indicate whether the first device uses a first type of DRU. Optionally, the target indication information includes at least one of the following fields:

[0308] First field;

[0309] The second field;

[0310] The third field.

[0311] Specifically, the implementation method of the target indication information is detailed in the above step 320.

[0312] In some embodiments, as shown in FIG19 , the method further includes:

[0313] Step 620: Indicate the first type DRU and the second type DRU based on the resource unit allocation field value.

[0314] In some embodiments, the first device receives indication information for indicating the first type DRU and the second type DRU in the DRU group. Optionally, in a triggered uplink transmission, the first type DRU and the second type DRU are indicated based on the resource unit allocation field value in the user information field in the basic trigger frame. For example, as shown in Table 13 below:

[0315] Table 13

[0316] For example, the resource unit allocation field value used to indicate the 26-way RU1 is also used to indicate the 52-way DRU1 consisting of the 26-way DRU1 and the 26-way DRU2, where the 26-way DRU1 is a first-type DRU and the 26-way DRU2 is a second-type DRU; or where the 26-way DRU1 is a second-type DRU and the 26-way DRU2 is a first-type DRU.

[0317] Optionally, the corresponding relationship in the above table may also be as shown in Table 14:

[0318] Table 14

[0319] For example, the resource unit allocation field value used to indicate the 26-way RU2 is also used to indicate the 52-way DRU2 consisting of the 26-way DRU2 and the 26-way DRU3, where the 26-way DRU2 is a first-type DRU and the 26-way DRU3 is a second-type DRU; or where the 26-way DRU2 is a second-type DRU and the 26-way DRU3 is a first-type DRU.

[0320] It should be noted that, generally speaking, to prevent conflicts caused by duplicate resource allocation, Table 13 and Table 14 cannot be used interchangeably. However, in actual use, Table 13 and Table 14 can be used interchangeably as long as no conflicts occur.

[0321] Similarly, 26-channel RU10 to 26-channel RU18 correspond to 52-channel DRU10 to 52-channel DRU18 respectively, and are sequentially composed of 26-channel DRU10 and 26-channel DRU11, 26-channel DRU11 and 26-channel DRU12, and so on.

[0322] Similarly, 26-channel RU19 to 26-channel RU27 correspond to 52-channel DRU19 to 52-channel DRU27 respectively, and are sequentially composed of 26-channel DRU19 and 26-channel DRU20, 26-channel DRU20 and 26-channel DRU21, and so on.

[0323] Similarly, 26-channel RU28 to 26-channel RU36 correspond to 52-channel DRU28 to 52-channel DRU36 respectively, and are sequentially composed of 26-channel DRU28 and 26-channel DRU29, 26-channel DRU29 and 26-channel DRU30, and so on.

[0324] Similarly, the 52-way RU1 to the 26-way RU4 correspond to the 106-way DRU1 to the 106-way DRU4 respectively.

[0325] Similarly, the 52-way RU5 to the 26-way RU8 correspond to the 106-way DRU5 to the 106-way DRU8 respectively.

[0326] Similarly, the 52-way RU9 to the 26-way RU12 correspond to the 106-way DRU9 to the 106-way DRU12 respectively.

[0327] Similarly, the number of RU13 with 52 connections to the number of RU16 with 26 connections corresponds to the number of DRU13 with 106 connections to the number of DRU16 with 106 connections.

[0328] Similarly, RU1 through 106 to RU4 through 106 correspond to DRU1 through 242 to DRU4 through 242, respectively.

[0329] Similarly, 106-way RU5 to 106-way RU8 correspond to 242-way DRU5 to 242-way DRU8 respectively.

[0330] Similarly, 242-way RU1 to 242-way RU4 correspond to 484-way DRU1 to 484-way DRU4 respectively.

[0331] In some embodiments, the above-mentioned 52-channel DRU and 106-channel DRU can be used for transmission of 20 MHz and / or 40 MHz and / or 80 MHz and / or 160 MHz and / or 320 MHz PPDU.

[0332] In some embodiments, the above-mentioned 242-channel DRU can be used for transmission of 40 MHz and / or 80 MHz and / or 160 MHz and / or 320 MHz PPDU.

[0333] In some embodiments, the above-mentioned 484-channel DRU can be used for transmission of 80MHz and / or 160MHz and / or 320MHz PPDU.

[0334] In some embodiments, in a triggered uplink transmission, the resource unit allocation field value in the user information field in the basic trigger frame indicates the first type DRU and the second type DRU. For example, as shown in the following Table 15:

[0335] Table 15

[0336] The resource unit allocation field value used to indicate a 52-way DRU1 is also used to indicate a 52-way DRU1 consisting of a 26-way DRU1 and a 26-way DRU2, where the 26-way DRU1 is a first-type DRU and the 26-way DRU2 is a second-type DRU; or where the 26-way DRU1 is a second-type DRU and the 26-way DRU2 is a first-type DRU.

[0337] In some embodiments, in a triggered uplink transmission, the resource unit allocation field value in the user information field in the basic trigger frame indicates the first type DRU and the second type DRU. For example, as shown in Table 16 below:

[0338] Table 16

[0339] The resource unit allocation field value used to indicate the 52-way DRU1 is also used to indicate the 52-way DRU1 consisting of the 26-way DRU2 and the 26-way DRU3, where the 26-way DRU1 is a first-type DRU and the 26-way DRU2 is a second-type DRU; or where the 26-way DRU1 is a second-type DRU and the 26-way DRU2 is a first-type DRU.

[0340] It is worth noting that the above step 620 can be implemented as a separate embodiment, or the above step 620 can be implemented as a combined embodiment with the above step 520. In the case where the above step 620 can be implemented as a combined embodiment with the above step 520, generally, step 620 is performed before step 520.

[0341] FIG20 shows a flowchart of a method for receiving a wireless signal provided by an exemplary embodiment of the present application. The method is performed by a second device, which is a signal receiver and can be an AP or a STA. The method includes:

[0342] Step 720: Receive a wireless signal sent using the DRU group.

[0343] In some embodiments, a DRU group includes adjacent first-type DRUs and second-type DRUs. For example, a DRU group includes a 26-way DRU1 and a 26-way DRU2, where the 26-way DRU1 is a first-type DRU and the 26-way DRU2 is a second-type DRU.

[0344] In some embodiments, all or part of the data subcarriers in the first type DRU are used as non-data subcarriers of the DRU group, the ratio of the number of non-data subcarriers of the DRU group to the number of all subcarriers of the DRU group is greater than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

[0345] In some embodiments, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is equal to or greater than two-thirteenths. Alternatively, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is equal to or greater than one-fifth. Alternatively, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is equal to or greater than three-tenths.

[0346] In some embodiments, to ensure the stability of wireless signal transmission, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers should also be less than a quantity threshold. Optionally, the quantity threshold is predefined or dynamically adjusted based on the requirements of wireless signal transmission. Optionally, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is less than one-half. Optionally, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is less than four-fifths.

[0347] Specifically, the implementation method of the first type of DRU in the DRU group is detailed in the above step 220.

[0348] In some embodiments, the second device sends target indication information. The target indication information is used to indicate whether the first device uses the DRU group. Alternatively, the target indication information is used to indicate whether the first device uses the first type of DRU. Optionally, the target indication information includes at least one of the following fields:

[0349] First field;

[0350] The second field;

[0351] The third field.

[0352] Specifically, the implementation method of the target indication information is detailed in the above step 320.

[0353] In some embodiments, the second device further sends indication information for indicating the first type DRU and the second type DRU in the DRU group. Optionally, the first type DRU and the second type DRU are indicated based on the resource unit allocation field value. For details on the resource unit allocation field value, see step 620 above.

[0354] In some embodiments, the above step 620 may also be combined with at least one of the above step 220 , the above step 320 , the above step 420 , or the above step 720 to be implemented as a new embodiment.

[0355] FIG21 shows a block diagram of a wireless signal transmitting apparatus provided by an exemplary embodiment of the present application. The apparatus includes:

[0356] The sending module 2110 is configured to send a wireless signal using a first type DRU.

[0357] In some embodiments, the first type DRU includes data subcarriers and non-data subcarriers, wherein the data subcarriers are used to transmit data signals, and the non-data subcarriers are subcarriers other than the data subcarriers among all subcarriers.

[0358] In some embodiments, non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers. In some embodiments, all non-data subcarriers are pilot subcarriers. In some embodiments, all non-data subcarriers are interference cancellation subcarriers. In some embodiments, a portion of the non-data subcarriers are pilot subcarriers and another portion are interference cancellation subcarriers. Pilot subcarriers can be multiplexed as interference cancellation subcarriers, or interference cancellation subcarriers can be multiplexed as pilot subcarriers. When pilot subcarriers and interference cancellation subcarriers can be multiplexed with each other, it is equivalent to all non-data subcarriers being pilot subcarriers or all non-data subcarriers being interference cancellation subcarriers. In some embodiments, non-data subcarriers also include null subcarriers.

[0359] In some embodiments, the ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers is greater than 13. For example, assuming that the first type DRU is a 26-channel DRU, the number of non-data subcarriers in the first type DRU is greater than 2.

[0360] In some embodiments, a ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers is equal to or greater than two-thirteenth.

[0361] In some embodiments, a ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers is equal to or greater than one-fifth.

[0362] In some embodiments, a ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers is equal to or greater than three tenths.

[0363] In some embodiments, in order to ensure the stability of wireless signal transmission, the ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers should also be less than a quantity threshold. Optionally, the quantity threshold is predefined or dynamically adjusted based on the demand for wireless signal transmission. Optionally, the ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers is less than one-half. Optionally, the ratio of the number of non-data subcarriers in the first type DRU to the total number of data subcarriers and non-data subcarriers is less than four-fifths.

[0364] In some embodiments, the positions of all non-data subcarriers in the first type DRU are uniformly distributed. Optionally, the uniform distribution includes at least one of the following:

[0365] Evenly distributed among every 26 subcarriers;

[0366] Evenly distributed in the bandwidth corresponding to a first-type DRU;

[0367] Evenly distributed within the bandwidth of a subchannel.

[0368] In some embodiments, the positions of all non-data subcarriers in the first type DRU are evenly distributed among every 26 subcarriers. For example, the first type DRU includes 13 non-data subcarriers, and each non-data subcarrier is located at an even position among the 26 subcarriers or at an odd position among the 26 subcarriers.

[0369] In some embodiments, positions of all non-data subcarriers in the first type DRU are evenly distributed in the bandwidth corresponding to one first type DRU.

[0370] In some embodiments, the positions of all non-data subcarriers in the first type DRU are uniformly distributed in the bandwidth of one subchannel.

[0371] In some embodiments, the variance of the spacing between two adjacent non-data subcarriers in the first type DRU is less than a threshold. Optionally, the threshold is predefined or dynamically adjusted based on signal transmission conditions. That is, the positions of all non-data subcarriers in the first type DRU may not be completely evenly distributed, but are as evenly distributed as possible.

[0372] In some embodiments, the first type of DRU includes the following two possible designs:

[0373] Design 1: The positions of all non-data subcarriers in the first type DRU are different from the position of at least one non-data subcarrier in the second type DRU;

[0374] Design 2: The positions of some non-data subcarriers in the first type DRU are the same as the positions of all non-data subcarriers in the second type DRU.

[0375] The ratio of the number of non-data subcarriers in the second type DRU to the total number of data subcarriers and non-data subcarriers is 13. In some embodiments, the second type DRU can be understood as a traditional type DRU, that is, it can be understood as a DRU proposed in the above-mentioned related proposals. In the embodiments of the present application, the first type DRU has a larger proportion of non-data subcarriers than the second type DRU.

[0376] For details, see the above-mentioned Design 1 and Design 2.

[0377] In some embodiments, the apparatus further comprises:

[0378] The receiving module 2120 is configured to receive target indication information, where the target indication information is used to indicate whether the first device uses a first type of DRU.

[0379] Specifically, the implementation method of the target indication information refers to the above step 320.

[0380] It should be noted that the device provided in the above embodiment only uses the division of the above-mentioned functional modules as an example to implement its functions. In actual applications, the above-mentioned functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0381] FIG22 shows a block diagram of a wireless signal receiving device provided by an exemplary embodiment of the present application. The device includes:

[0382] The receiving module 2210 is configured to receive a wireless signal sent by a first type DRU.

[0383] In some embodiments, the first type DRU includes data subcarriers and non-data subcarriers, wherein the data subcarriers are used to transmit data signals, and the non-data subcarriers are subcarriers other than the data subcarriers among all subcarriers.

[0384] In some embodiments, non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers. In some embodiments, all non-data subcarriers are pilot subcarriers. In some embodiments, all non-data subcarriers are interference cancellation subcarriers. In some embodiments, a portion of the non-data subcarriers are pilot subcarriers and another portion are interference cancellation subcarriers. Pilot subcarriers can be multiplexed as interference cancellation subcarriers, or interference cancellation subcarriers can be multiplexed as pilot subcarriers. When pilot subcarriers and interference cancellation subcarriers can be multiplexed with each other, it is equivalent to all non-data subcarriers being pilot subcarriers or all non-data subcarriers being interference cancellation subcarriers. In some embodiments, non-data subcarriers also include null subcarriers.

[0385] Specifically, the implementation of the first type DRU is detailed in step 220 above.

[0386] In some embodiments, the apparatus further comprises:

[0387] The sending module 2220 is configured to send target indication information, wherein the target indication information is used to indicate whether the first device uses a first type DRU.

[0388] Specifically, the implementation method of the target indication information is detailed in the above step 320.

[0389] It should be noted that the device provided in the above embodiment only uses the division of the above-mentioned functional modules as an example to implement its functions. In actual applications, the above-mentioned functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0390] FIG23 shows a flow chart of a wireless signal transmitting apparatus provided by an exemplary embodiment of the present application. The apparatus includes:

[0391] The sending module 2310 is configured to send wireless signals using the DRU group.

[0392] In some embodiments, a DRU group includes adjacent first-type DRUs and second-type DRUs. For example, a DRU group includes a 26-way DRU1 and a 26-way DRU2, where the 26-way DRU1 is a first-type DRU and the 26-way DRU2 is a second-type DRU.

[0393] In some embodiments, all or part of the data subcarriers in the first type DRU are used as non-data subcarriers of the DRU group, the ratio of the number of non-data subcarriers of the DRU group to the number of all subcarriers of the DRU group is greater than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

[0394] In some embodiments, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is equal to or greater than two-thirteenths. Alternatively, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is equal to or greater than one-fifth. Alternatively, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is equal to or greater than three-tenths.

[0395] In some embodiments, to ensure the stability of wireless signal transmission, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers should also be less than a quantity threshold. Optionally, the quantity threshold is predefined or dynamically adjusted based on the requirements of wireless signal transmission. Optionally, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is less than one-half. Optionally, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is less than four-fifths.

[0396] Specifically, the implementation method of the first type of DRU in the DRU group is detailed in the above step 220.

[0397] In some embodiments, the apparatus further comprises:

[0398] The receiving module 2320 is configured to receive target indication information. The target indication information is used to indicate whether the first device uses a DRU group. Alternatively, the target indication information is used to indicate whether the first device uses a first type of DRU.

[0399] Specifically, the implementation method of the target indication information is detailed in the above step 320.

[0400] The receiving module 2320 is further configured to receive a resource unit allocation field value, where the resource unit allocation field value is used to indicate a first type DRU and a second type DRU.

[0401] Specifically, the implementation method of the resource unit allocation field value is detailed in the above step 620.

[0402] It should be noted that the device provided in the above embodiment only uses the division of the above-mentioned functional modules as an example to implement its functions. In actual applications, the above-mentioned functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0403] FIG24 shows a flow chart of a wireless signal receiving device provided by an exemplary embodiment of the present application. The device includes:

[0404] The receiving module 2410 is configured to receive a wireless signal sent by a DRU group.

[0405] In some embodiments, a DRU group includes adjacent first-type DRUs and second-type DRUs. For example, a DRU group includes a 26-way DRU1 and a 26-way DRU2, where the 26-way DRU1 is a first-type DRU and the 26-way DRU2 is a second-type DRU.

[0406] In some embodiments, all or part of the data subcarriers in the first type DRU are used as non-data subcarriers of the DRU group, the ratio of the number of non-data subcarriers of the DRU group to the number of all subcarriers of the DRU group is greater than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

[0407] In some embodiments, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is equal to or greater than two-thirteenths. Alternatively, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is equal to or greater than one-fifth. Alternatively, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is equal to or greater than three-tenths.

[0408] In some embodiments, to ensure the stability of wireless signal transmission, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers should also be less than a quantity threshold. Optionally, the quantity threshold is predefined or dynamically adjusted based on the requirements of wireless signal transmission. Optionally, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is less than one-half. Optionally, the ratio of the number of non-data subcarriers in the DRU group to the total number of data subcarriers and non-data subcarriers is less than four-fifths.

[0409] Specifically, the implementation method of the first type of DRU in the DRU group is detailed in the above step 220.

[0410] In some embodiments, the apparatus further comprises:

[0411] The sending module 2420 is configured to send target indication information. The target indication information is used to indicate whether the first device uses the DRU group. Alternatively, the target indication information is used to indicate whether the first device uses the first type of DRU.

[0412] Specifically, the implementation method of the target indication information is detailed in the above step 320.

[0413] The sending module 2420 is further configured to send indication information indicating the first type DRU and the second type DRU in the DRU group. Optionally, the first type DRU and the second type DRU are indicated based on the resource unit allocation field value. For details on the resource unit allocation field value, see step 620 above.

[0414] It should be noted that the device provided in the above embodiment only uses the division of the above-mentioned functional modules as an example to implement its functions. In actual applications, the above-mentioned functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0415] FIG25 is a schematic diagram showing the structure of a communication device provided by an embodiment of the present application. The communication device may include: a processor 2501 , a receiver 2502 , a transmitter 2503 , a memory 2504 , and a bus 2505 .

[0416] The processor 2501 includes one or more processing cores. The processor 2501 executes various functional applications and information processing by running software programs and modules.

[0417] The receiver 2502 and the transmitter 2503 may be implemented as a transceiver 2506 , which may be a communication chip.

[0418] The memory 2504 is connected to the processor 2501 via the bus 2505. The memory 2504 can be used to store computer programs, and the processor 2501 is used to execute the computer programs to implement the various steps performed by the first device and / or the second device in the above method embodiment.

[0419] In addition, the memory 2504 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: RAM (Random-Access Memory) and ROM (Read-Only Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory), DVD (Digital Video Disc) or other optical storage, tape cassettes, magnetic tape, disk storage or other magnetic storage devices.

[0420] An embodiment of the present application also provides a computer-readable storage medium, in which a computer program is stored, and the computer program is used by a processor of a communication device to implement the various steps in the above-mentioned wireless signal sending method and / or receiving method. In some embodiments, the computer-readable storage medium may include: ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State Drives) or optical disks, etc. Among them, random access memory may include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

[0421] An embodiment of the present application also provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip runs on a terminal or network device, it is used to implement each step in the above-mentioned wireless signal sending method and / or receiving method.

[0422] An embodiment of the present application also provides a computer program product or computer program, which includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the terminal or network device reads and executes the computer instructions from the computer-readable storage medium to implement each step in the above-mentioned wireless signal sending method and / or receiving method.

[0423] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0424] The above description is merely an exemplary embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A method for transmitting a wireless signal, characterized in that, the method comprises: transmitting the wireless signal using a first type of DRU; wherein, the first type of DRU includes data subcarriers and non-data subcarriers, and the ratio of the number of non-data subcarriers to the total number of data subcarriers and non-data subcarriers exceeds one-thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

2. A method for receiving a wireless signal, characterized in that, the method comprises: receiving the wireless signal transmitted using a first type of DRU; wherein, the first type of DRU includes data subcarriers and non-data subcarriers, and the ratio of the number of non-data subcarriers to the total number of data subcarriers and non-data subcarriers exceeds one-thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

3. A method for transmitting a wireless signal, characterized in that, the method comprises: transmitting the wireless signal using a DRU group; wherein, the DRU group includes adjacent first type of DRU and second type of DRU, all or part of the data subcarriers in the first type of DRU are used as non-data subcarriers of the DRU group, and the ratio of the number of non-data subcarriers of the DRU group to the total number of all subcarriers of the DRU group exceeds one-thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

4. A method for receiving a wireless signal, characterized in that, the method comprises: receiving the wireless signal transmitted using a DRU group; wherein, the DRU group includes adjacent first type of DRU and second type of DRU, all or part of the data subcarriers in the first type of DRU are used as non-data subcarriers of the DRU group, and the ratio of the number of non-data subcarriers of the DRU group to the total number of all subcarriers of the DRU group exceeds one-thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

5. The method according to any one of claims 1 to 4, characterized in that, the positions of all non-data subcarriers in the first type of DRU are uniformly distributed, or, the variance of the interval between two adjacent non-data subcarriers in the first type of DRU is less than a threshold.

6. The method according to claim 5, characterized in that, the uniform distribution method includes at least one of the following: uniformly distributed among every 26 subcarriers; uniformly distributed in the bandwidth corresponding to a first type of DRU; uniformly distributed in the bandwidth of a subchannel.

7. The method according to any one of claims 1 to 6, characterized in that, the positions of all non-data subcarriers in the first type of DRU are different from the positions of at least one non-data subcarrier in the second type of DRU; wherein, the ratio of the number of non-data subcarriers in the second type of DRU to the total number of data subcarriers and non-data subcarriers is one-thirteenth.

8. The method according to claim 7, characterized in that, The first type of DRU includes n * 26 sub - carriers, where n is a positive integer; Among every k sub - carriers in the first type of DRU, at least 1 non - data sub - carrier exists, and the value of k ranges from 1 to 8.

9. According to the method described in claim 8, it is characterized in that Among every 26 sub - carriers in the first type of DRU, the 3rd, 6th, 9th, 12th, 15th, 18th, 21st, and 24th sub - carriers are the non - data sub - carriers.

10. According to the method described in claim 9, it is characterized in that The 9th sub - carrier and the 21st sub - carrier are the pilot sub - carriers, and the 6 non - data sub - carriers other than the 9th sub - carrier and the 21st sub - carrier are the interference cancellation sub - carriers.

11. According to the method described in claim 10, it is characterized in that The 9th sub - carrier and the 21st sub - carrier are also multiplexed as the interference cancellation sub - carriers.

12. According to the method described in claim 9 or 10, it is characterized in that The 6 non - data sub - carriers other than the 9th sub - carrier and the 21st sub - carrier are also the pilot sub - carriers.

13. According to the method described in claim 8, it is characterized in that Among every 26 sub - carriers in the first type of DRU, the 2nd, 5th, 8th, 11th, 14th, 17th, 20th, 23rd, and 26th sub - carriers are the non - data sub - carriers.

14. According to the method described in claim 13, it is characterized in that The 8th sub - carrier and the 20th sub - carrier are the pilot sub - carriers, and the 7 non - data sub - carriers other than the 8th sub - carrier and the 20th sub - carrier are the interference cancellation sub - carriers.

15. According to the method described in claim 14, it is characterized in that The 8th sub - carrier and the 20th sub - carrier are also multiplexed as the interference cancellation sub - carriers.

16. According to the method described in claim 13 or 14, it is characterized in that The 7 non - data sub - carriers other than the 8th sub - carrier and the 20th sub - carrier are also the pilot sub - carriers.

17. According to any one of the methods described in claims 1 to 6, it is characterized in that The positions of some non - data sub - carriers in the first type of DRU are the same as the positions of all non - data sub - carriers in the second type of DRU; wherein, the ratio of the number of non - data sub - carriers in the second type of DRU to the total number of data sub - carriers and non - data sub - carriers is one - thirteenth.

18. According to the method described in claim 17, it is characterized in that The first type of DRU includes n * 26 sub - carriers, where n is a positive integer; Among every 8 sub - carriers in the first type of DRU, at least 1 non - data sub - carrier exists.

19. According to the method described in claim 18, it is characterized in that Among every 26 sub - carriers in the first type of DRU, the 1st, 4th, 7th, 10th, 13th, 16th, 20th, 23rd, and 26th sub - carriers are the non - data sub - carriers.

20. According to the method described in claim 19, it is characterized in that The 7th subcarrier and the 20th subcarrier are the pilot subcarriers in the same positions in the first type of DRU and the second type of DRU. The 7 non-data subcarriers other than the 7th subcarrier and the 20th subcarrier are the interference cancellation subcarriers.

21. The method according to claim 20, wherein, the 7th subcarrier and the 20th subcarrier are also multiplexed as the interference cancellation subcarriers.

22. The method according to claim 19 or 20, wherein, the 7 non-data subcarriers other than the 7th subcarrier and the 20th subcarrier are also the pilot subcarriers.

23. The method according to claim 18, wherein, the 2nd, 5th, 7th, 10th, 13th, 18th, 20th, and 23rd subcarriers among every 26 subcarriers in the first type of DRU are the non-data subcarriers.

24. The method according to claim 23, wherein, the 7th subcarrier and the 20th subcarrier are the pilot subcarriers in the same positions in the first type of DRU and the second type of DRU. The 6 non-data subcarriers other than the 7th subcarrier and the 20th subcarrier are the interference cancellation subcarriers.

25. The method according to claim 24, wherein, the 7th subcarrier and the 20th subcarrier are also multiplexed as the interference cancellation subcarriers.

26. The method according to claim 23 or 24, wherein, the 6 non-data subcarriers other than the 7th subcarrier and the 20th subcarrier are also the pilot subcarriers.

27. The method according to any one of claims 1 to 26, wherein, the method further includes: indicating whether to use the first type of DRU or a DRU group including the first type of DRU based on target indication information.

28. The method according to claim 27, wherein, the target indication information includes at least one of the following fields: First field; Second field; Third field.

29. The method according to claim 28, wherein, the first field is used to indicate whether to use the first type of DRU to transmit data in the uplink direction.

30. The method according to claim 29, wherein, the first field includes at least one of the following: Efficient variant user information field; Ultra-high throughput variant user information field; Ultra-high reliability variant user information field; General information field; Special user information field.

31. The method according to claim 30, wherein, the first field is a field in a basic trigger frame.

32. The method according to claim 31, wherein, the first field includes m bits, and each of the m bits corresponds to a subchannel; when the value of the i-th bit among the m bits is a first value, it is used to indicate that the subchannel associated with the i-th bit uses the first type of DRU; When the value of the \(i\)-th bit among the \(m\) bits is the second value, it is used to indicate that the sub-channel associated with the \(i\)-th bit does not use the first type of DRU; wherein, \(m\) takes a positive integer value, and \(i\) takes a positive integer value less than or equal to \(m\).

33. The method according to claim 28, characterized in that, the second field is used to indicate whether to use the first type of DRU to transmit data in the uplink direction.

34. The method according to claim 33, characterized in that, the second field includes at least one of the following fields: a field in the uplink multi-user physical layer protocol data unit (MU PPDU); a field in the uplink high-efficiency single-user physical layer protocol data unit (HE SU PPDU); a first newly added field.

35. The method according to claim 28, characterized in that, the third field is used to indicate whether to use the first type of DRU to transmit data in the downlink direction.

36. The method according to claim 35, characterized in that, the third field includes at least one of the following fields: a field in the downlink MU PPDU; a field in the downlink HE SU PPDU; a second newly added field.

37. The method according to any one of claims 1 to 26, characterized in that, the method further includes: indicating the first type of DRU and the second type of DRU based on the resource unit allocation field value.

38. A wireless signal transmitting device, characterized in that, the device includes: a transmitting module, configured to transmit the wireless signal using a first type of DRU; wherein, the first type of DRU includes data sub-carriers and non-data sub-carriers, and the ratio of the number of non-data sub-carriers to the total number of data sub-carriers and non-data sub-carriers exceeds one-thirteenth, and the non-data sub-carriers include at least one of pilot sub-carriers and interference cancellation sub-carriers.

39. A wireless signal receiving device, characterized in that, the device includes: a receiving module, configured to receive the wireless signal transmitted using a first type of DRU; wherein, the first type of DRU includes data sub-carriers and non-data sub-carriers, and the ratio of the number of non-data sub-carriers to the total number of data sub-carriers and non-data sub-carriers exceeds one-thirteenth, and the non-data sub-carriers include at least one of pilot sub-carriers and interference cancellation sub-carriers.

40. A wireless signal transmitting device, characterized in that, the device includes: a transmitting module, configured to transmit the wireless signal using a DRU group; wherein, the DRU group includes adjacent first type of DRUs and second type of DRUs, all or part of the data sub-carriers in the first type of DRUs are used as non-data sub-carriers of the DRU group, and the ratio of the number of non-data sub-carriers of the DRU group to the total number of all sub-carriers of the DRU group exceeds one-thirteenth, and the non-data sub-carriers include at least one of pilot sub-carriers and interference cancellation sub-carriers.

41. A wireless signal receiving device, characterized in that, the device includes: A receiving module, configured to receive the wireless signal transmitted using the DRU group; Wherein, the DRU group includes an adjacent first type of DRU and a second type of DRU, all or part of the data subcarriers in the first type of DRU are used as non-data subcarriers of the DRU group, and the ratio of the number of non-data subcarriers of the DRU group to the number of all subcarriers of the DRU group exceeds one thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

42. A communication device, Characterized in that, The communication device includes: A processor; A transceiver connected to the processor; A memory for storing executable instructions of the processor; Wherein, the processor is configured to load and execute the executable instructions to implement the wireless signal sending method and / or receiving method as described in any one of claims 1 to 37.

43. A computer-readable storage medium, Characterized in that, The computer-readable storage medium stores a computer program, and the computer program is loaded and executed by a communication device to implement the wireless signal sending method and / or receiving method as described in any one of claims 1 to 37.

44. A computer program product, Characterized in that, The computer program product includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and a communication device obtains the computer instructions from the computer-readable storage medium, so that the processor loads and executes to implement the wireless signal sending method and / or receiving method as described in any one of claims 1 to 37.

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