WO2025118146A1 - Wireless signal sending method and apparatus, wireless signal receiving method and apparatus, device, and medium - Google Patents

Abstract

The present application relates to the technical field of communications, and discloses a wireless signal sending method and apparatus, a wireless signal receiving method and apparatus, a device, and a medium. The wireless signal sending method comprises: using a first-type DRU to send a wireless signal, 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 include at least one of a pilot subcarrier and an interference cancellation subcarrier. In this way, the transmission distance of wireless signals can be increased, and the transmission reliability can also be improved.

Description

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

The embodiments of the present application relate to the field of communication technology, and in particular to a method for sending, a method for receiving, an apparatus, a device and a medium for sending a wireless signal.

Background Art

It is proposed in the related art that interleaving more pilot subcarriers (which can be called interference cancellation subcarriers) in the data subcarriers can improve the reliability of transmitting wireless signals. In addition, dispersing the subcarriers in a smaller resource unit (RU) into a larger bandwidth can achieve the transmission of wireless signals over longer distances.

However, there is still no clear solution on how to improve the reliability of transmitting wireless signals after dispersing the subcarriers in a smaller RU into a larger bandwidth.

Summary of the invention

The embodiments of the present application provide a method for sending a wireless signal, a method for receiving a wireless signal, an apparatus, a device and a medium. The technical solution is as follows:

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

Sending the wireless signal using a first type DRU;

The first type DRU includes data subcarriers and non-data subcarriers, the ratio of the number of non-data subcarriers to the total number of data subcarriers and non-data subcarriers is greater than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers.

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

receiving the wireless signal sent using a first type DRU;

The first type DRU includes data subcarriers and non-data subcarriers, the ratio of the number of non-data subcarriers to the total number of data subcarriers and non-data subcarriers is greater than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers.

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

Using the DRU group to send the wireless signal;

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 exceeds thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers.

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

receiving the wireless signal sent using the DRU group;

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 exceeds thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers.

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

A sending module, configured to send the wireless signal using a first type DRU;

The first type DRU includes data subcarriers and non-data subcarriers, the ratio of the number of non-data subcarriers to the total number of data subcarriers and non-data subcarriers is greater than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers.

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

A receiving module, configured to receive the wireless signal sent using the first type DRU;

The first type DRU includes data subcarriers and non-data subcarriers, the ratio of the number of non-data subcarriers to the total number of data subcarriers and non-data subcarriers is greater than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers.

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

A sending module, used for sending the wireless signal using a DRU group;

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 greater than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers one.

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

A receiving module, used to receive the wireless signal sent by the DRU group;

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 exceeds thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers.

According to another aspect of an embodiment of the present application, a communication device is provided, the communication device comprising:

processor;

a transceiver coupled to the processor;

a memory for storing executable instructions for the processor;

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.

According to another aspect of an embodiment of the present application, a computer-readable storage medium is provided, in which a computer program is stored. 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.

According to another aspect of an embodiment of the present application, a computer program product or a 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 a method for receiving wireless signals as described in the above aspects.

The technical solution provided by the embodiments of the present application may have the following beneficial effects:

By using the first type of DRU to send wireless signals, it is not only possible to transmit wireless signals over longer distances, but also to improve the reliability of transmitting wireless signals. Since the subcarriers in the first type of DRU are dispersed over a larger bandwidth, each data subcarrier in the first type of DRU can use more energy to send wireless signals, thereby being able to transmit wireless signals over longer distances. And the ratio of the number of non-data subcarriers in the first type of DRU to the number of all subcarriers is more than thirteenth, that is, the number of non-data subcarriers in the first type of DRU is greater, so the reliability of transmitting wireless signals is higher.

BRIEF DESCRIPTION OF THE DRAWINGS

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

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

FIG3 is a schematic diagram showing a subcarrier in a resource unit provided by the related art;

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

FIG5 is a schematic diagram showing a subcarrier in a resource unit provided by the related art;

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

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

FIG8 is a schematic diagram showing a subcarrier in a resource unit provided by the related art;

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

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

FIG11 is a flowchart of a method for sending a wireless signal provided in an embodiment of the present application;

FIG12 is a flowchart of a method for sending a wireless signal provided in an embodiment of the present application;

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

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

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

FIG16 is a schematic diagram showing target indication information provided by an embodiment of the present application;

FIG17 shows a flow chart of a method for receiving a wireless signal provided in an embodiment of the present application;

FIG18 is a flowchart of a method for sending a wireless signal provided in an embodiment of the present application;

FIG19 is a flowchart of a method for sending a wireless signal provided in an embodiment of the present application;

FIG20 shows a flow chart of a method for receiving a wireless signal provided in an embodiment of the present application;

FIG21 shows a structural block diagram of a wireless signal sending device provided in an embodiment of the present application;

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

FIG23 shows a structural block diagram of a wireless signal sending device provided in an embodiment of the present application;

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

FIG25 shows a schematic diagram of the structure of a communication device provided in an embodiment of the present application.

DETAILED DESCRIPTION

In order to make the purpose, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with 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 implementation methods described in the following exemplary embodiments do not represent all implementation methods 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. For 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.

The terms used in the present disclosure are only for the purpose of describing specific embodiments, and are not intended to limit the present disclosure. The singular forms of "a", "said" and "the" used in the present disclosure and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and/or" used in this article 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 in the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present 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 can be interpreted as "at the time of" or "when" or "in response to determination".

First, the related technologies involved in the embodiments of the present application are introduced:

Resource elements and pilot subcarriers:

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 (PHY Protocol Data Unit, PPDU) are also different. For example, the position of the RU in the 20 MHz HE PPDU is shown in FIG. 1, and the position of the RU in the 40 MHz HE PPDU is shown in FIG. 2. In addition, the position of the RU in the 80 MHz HE PPDU can refer to the combination of the positions of two RUs in the 40 MHz HE PPDU, and the position of the RU in the 160 MHz HE PPDU can refer to the combination of the positions of four RUs in the 40 MHz HE PPDU, and there can be other more combinations.

For Extremely High Throughput (EHT) sites, the positions of RUs of different sizes in 20MHz, 40MHz, and 80MHz EHT PPDUs are also different. Specifically, the position of the RU in the 20MHz EHT PPDU is the same as the position of the RU in the 20MHz HE PPDU, see Figure 1 above. The position of the RU in the 40MHz EHT PPDU is the same as the position of the RU in the 40MHz HE PPDU, see Figure 2 above. And there can be many other combinations.

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

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:

Table 1

Exemplarily, for a user transmitting on the i-th 52-channel RU on a given PPDU BW, the positions of the 4 pilot subcarriers on each 52-channel RU are shown in Table 2 below:

Table 2

Exemplarily, for a user transmitting on the i-th 106-channel RU on a given PPDU BW, the positions of the 4 pilot subcarriers on each 106-channel RU are shown in Table 3 below:

Table 3

Exemplarily, 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:

Table 4

Exemplarily, 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:

Table 5

Exemplarily, 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:

Table 6

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

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

Add pilot subcarrier:

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 includes 2 pilot subcarriers and 24 data subcarriers. 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

Among them, 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 Additive White Gaussian Noise (AWGN), r represents the interference signal, and g represents the channel through which the interference signal r passes.

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 by more pilot subcarriers, the original signal can be estimated more accurately:

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

Distributed Resource Unit (DRU):

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 a 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 a 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, and 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.

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

Design of pilot subcarriers in DRU:

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 DRU:

Option 1: Define new pilot subcarriers. For each 26-channel DRU, select the 7th and 20th subcarriers among the 26 subcarriers as pilot subcarriers. For example, as shown in FIG5 , the 26 subcarriers in a 26-channel DRU are dispersed in a large bandwidth, and according to the definition of pilot subcarriers in the new DRU, the 7th subcarrier and the 20th subcarrier are pilot subcarriers.

Option 2: Use the pilot subcarriers defined in the related art. That is, the x-th DRU contains 24 scattered data subcarriers and 2 pilot subcarriers in the x-th RU. Exemplarily, as shown in FIG6 , the 26 subcarriers in a 26-channel DRU are scattered over a large bandwidth, where the positions of the 2 pilot subcarriers are the same as those in the related art. This option is more sensitive to the Carrier Frequency Offset (CFO) error, so the performance of Option 2 is not as good as Option 1.

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

Option 3: Use the pilot subcarriers in the related art, but distribute them as much as possible. That is, the xth 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 in total, and these pilot subcarriers are dispersedly allocated to x 26-channel DRUs. For example, as shown in FIG7, the first pilot subcarrier of the 18 pilot subcarriers is allocated to the 24 dispersed data subcarriers. The first pilot subcarrier and the tenth pilot subcarrier 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 option 1.

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

For example, as shown in FIG8 , one subcarrier is alternately allocated to the first, second, and ninth DRUs in the order of frequency from small to large among the subcarriers of all RUs in 20 MHz, and then to the first, second, and ninth DRUs, until the allocation is completed. That is, each DRU selects one subcarrier from every nine subcarriers in turn.

Specifically, the communication plan for DRU at 20MHz is:

52-way DRU1 = 26-way DRU1 + 26-way DRU6;

52-way DRU2 = 26-way DRU2 + 26-way DRU7;

52-way DRU3 = 26-way DRU3 + 26-way DRU8;

52-way DRU4 = 26-way DRU4 + 26-way DRU9;

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

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

Specifically, the communication plan for DRU at 40MHz is:

52-way DRU1 = 26-way DRU1 + 26-way DRU10;

52-way DRU2 = 26-way DRU2 + 26-way DRU11;

52-way DRU3 = 26-way DRU3 + 26-way DRU12;

52-way DRU4 = 26-way DRU4 + 26-way DRU13;

52-way DRU5 = 26-way DRU6 + 26-way DRU15;

52-way DRU6 = 26-way DRU7 + 26-way DRU16;

52-way DRU7 = 26-way DRU8 + 26-way DRU17;

52-way DRU8 = 26-way DRU9 + 26-way DRU18;

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

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

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

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

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

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

Specifically, the communication plan for DRU at 80MHz is:

52-way DRU1 = 26-way DRU1 + 26-way DRU19;

52-way DRU2 = 26-way DRU2 + 26-way DRU20;

52-way DRU3 = 26-way DRU3 + 26-way DRU21;

52-way DRU4 = 26-way DRU4 + 26-way DRU22;

52-way DRU5 = 26-way DRU6 + 26-way DRU24;

52-way DRU6 = 26-way DRU7 + 26-way DRU25;

52-way DRU7 = 26-way DRU8 + 26-way DRU26;

52-way DRU8 = 26-way DRU9 + 26-way DRU27;

52-way DRU9 = 26-way DRU10 + 26-way DRU28;

52-way DRU10 = 26-way DRU11 + 26-way DRU29;

52-way DRU11 = 26-way DRU12 + 26-way DRU30;

52-way DRU12 = 26-way DRU13 + 26-way DRU31;

52-way DRU13 = 26-way DRU15 + 26-way DRU33;

52-way DRU14 = 26-way DRU16 + 26-way DRU34;

52-way DRU15 = 26-way DRU17 + 26-way DRU35;

52-way DRU16 = 26-way DRU18 + 26-way DRU36;

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

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

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

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

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

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

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

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

242 channels for DRU1 = 106 channels for DRU1 + 106 channels for DRU5 + 26 channels for DRU5 + 4 empty subcarriers;

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

242 channels for DRU3 = 106 channels for DRU3 + 106 channels for DRU7 + 26 channels for DRU23 + 4 empty subcarriers;

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

484 connections to DRU1 = 242 connections to DRU1 + 242 connections to DRU3;

484 connections to DRU2 = 242 connections to DRU2 + 242 connections to DRU4;

Generally, the above-mentioned null subcarrier exists between 26-channel RU or 52-channel RU. In 106-channel RU, 242-channel RU or 484-channel RU, the null subcarrier is used as a data subcarrier.

See 11-23-1448-00-0uhr-further-considerations-on-dru. The proposal proposes that a DRU design is also required under 160MHz bandwidth. The proposal also proposes that when there is preamble puncturing, there are two solutions for the DRU design:

Solution 1: Design a new communication plan to spread the subcarriers across the entire occupied channel, for example, when 20MHz is punctured in 80MHz, spread the subcarriers across the occupied 60Mhz. This option has better performance.

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.

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

The index of the pilot subcarrier in the DRU:

See 11-23-1511-01-0uhr-pilot-tone-allocation-and-other-considerations-of-tone-distributed-rus-for-uhr. The proposal gives the pilot subcarrier index at 20MHz for the above three ways of designing the pilot subcarrier in the DRU, see Table 7 below:

Table 7

The proposal also suggests that the design of DRU also needs to consider CFO errors and interference between resource units, but does not provide a specific solution.

The proposal also points out that the data subcarrier and the pilot subcarrier in the related technology 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. Exemplarily, 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, to the ninth DRU, and then to the first, second, to the ninth DRU, until the allocation is completed.

Downlink (DL) DRU:

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 two 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.

FIG10 is a schematic diagram of a communication system 10 provided by an exemplary embodiment of the present application. The communication system 10 includes terminals and terminals, or terminals and network devices, or access points (AP) and stations (STA), which are not limited in the present application. The present application takes the communication system 10 including: AP110 and STA120 as an example for explanation.

In some scenarios, AP can also be called AP STA, that is, in a sense, AP is also a STA. In some scenarios, STA can also be called non-AP STA.

In some embodiments, STA may include AP STA and non-AP STA. Communication in the communication system may be communication between AP and non-AP STA, communication between non-AP STA and non-AP STA, or communication between STA and peer STA, wherein peer STA may refer to a device that communicates with the STA peer, for example, peer STA may be AP or non-AP STA. Exemplarily, there are two communication scenarios between STA and AP: uplink communication scenario and downlink communication scenario. Uplink communication refers to STA sending a signal to AP; downlink communication refers to AP sending a signal to STA. AP is equivalent to a bridge connecting wired network and wireless network, and its main function is to connect various wireless network clients together and then connect the wireless network to Ethernet. 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.

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

It should be understood that the role of STA in the communication system is not absolute. For example, in some scenarios, when a mobile phone is connected to a router, the mobile phone is a non-AP STA. When the mobile phone is used as a hotspot for other mobile phones, the mobile phone plays the role of an AP. APs and non-AP STAs can be devices used in the Internet of 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.

In some embodiments, non-AP STA may support but not be limited to 802.11bf. 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, AP may be a device supporting 802.11bf. 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.

In the embodiment of the present application, STA can be a mobile phone, tablet computer, computer, virtual reality (VR) device, augmented reality (AR) device, communication equipment in industrial control, set-top box, communication equipment in unmanned driving, vehicle-mounted communication equipment, communication equipment in telemedicine, communication equipment in smart grid, communication equipment in transportation safety, communication equipment in smart city or communication equipment in smart home, wireless communication chip, etc. WLAN technology can support frequency bands including but not limited to: low frequency band (2.4GHz, 5GHz, 6GHz), high frequency band (60GHz).

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 on the 2.4 GHz, 5 GHz, 6 GHz and 60 GHz bands at the same time, or communicating on different channels of the same band (or different bands) at the same time, so as to improve 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 (Multi-Link Device, MLD), and is sometimes also referred to as a multi-link entity or a multi-band entity. A multi-link device may 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 may also be referred to as an AP, and a multi-link device including one or more non-AP STAs may also be referred to as a Non-AP. In the embodiment of the present application, a Non-AP may be referred to as a STA.

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

AP is a device deployed in a wireless local area network to provide wireless communication functions for STA. STA may include: User Equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, wireless communication device, user agent or user device. Optionally, STA can also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, and the embodiments of the present application are not limited to this.

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

It is proposed in the related art that when sending wireless signals, interleaving more pilot subcarriers (which can be called interference cancellation subcarriers) in the data subcarriers can improve the transmission reliability, and on the other hand, dispersing the subcarriers of a smaller RU into a larger bandwidth can improve the transmission distance. However, after dispersing the subcarriers in a smaller RU into a larger bandwidth, there is still no clear solution for how to improve the reliability of transmitting wireless signals.

Based on the above defects, a method for sending a wireless signal is proposed in an embodiment of the present application, which can improve the transmission reliability and the transmission distance by interleaving more pilot subcarriers in the data subcarriers of the DRU. Figure 11 shows a flowchart of a method for sending a wireless signal provided by an exemplary embodiment of the present application. The method is performed by a first device, which is a signal sender, and the first device can be an AP or a STA. The method includes:

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

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 in all subcarriers.

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, part of the non-data subcarriers are pilot subcarriers and the other part are interference cancellation subcarriers, and the pilot subcarriers can be multiplexed as interference cancellation subcarriers or the interference cancellation subcarriers can be multiplexed as pilot subcarriers. In the case where pilot subcarriers and interference cancellation subcarriers can be multiplexed with each other, it is equivalent to that all non-data subcarriers are pilot subcarriers or all non-data subcarriers are interference cancellation subcarriers. In some embodiments, the non-data subcarriers also include null subcarriers.

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 exceeds 13. Exemplarily, 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.

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.

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.

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.

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.

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-way EDRU, a 52-way EDRU, a 106-way EDRU, a 242-way EDRU, and a 484-way EDRU. In the embodiments of the present application, the first type DRU is a 26-way EDRU as an example for illustration.

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:

Evenly distributed in every 26 subcarriers;

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

Evenly distributed in the bandwidth of a subchannel.

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

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

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

In some embodiments, the variance of the interval between two adjacent non-data subcarriers in the first type DRU is less than a threshold. Optionally, the threshold is predefined or dynamically adjusted according to 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.

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

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;

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.

Among them, 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 thirteenth. In some embodiments, the second type DRU can be understood as a traditional type DRU, that is, it can be understood as a DRU that has been proposed in the above-mentioned related proposals. In the embodiment of the present application, the first type DRU has a larger proportion of non-data subcarriers in all subcarriers than the second type DRU.

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 in 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. And 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 first type DRU has a ratio of 1/3 to 2/4. The number of non-data subcarriers in a type of DRU is greater, so the reliability of transmitting wireless signals is higher.

For design one:

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. Optionally, the first type DRU includes n*26 subcarriers and 0 empty subcarriers, or the first type DRU includes n*26 subcarriers and 2 empty subcarriers, or the first type DRU includes n*26 subcarriers and 4 empty subcarriers. Each empty subcarrier can also be used to transmit data.

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 among 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 like "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."

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.

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, the positions of new non-data subcarriers are defined in the first type DRU.

In some embodiments, the 3rd, 6th, 9th, 12th, 15th, 18th, 21st, and 24th subcarriers of every 26 subcarriers in the first type DRU are non-data subcarriers. Among them, the 9th subcarrier and the 21st subcarrier are pilot subcarriers, and the 6 non-data subcarriers other than the 9th subcarrier and the 21st subcarrier are interference elimination subcarriers. Optionally, the 9th subcarrier and the 21st subcarrier are also multiplexed as interference elimination subcarriers. Optionally, the 6 non-data subcarriers other than the 9th subcarrier and the 21st subcarrier are also pilot subcarriers.

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

Table 8

Among them, the 3rd, 6th, 9th, 12th, 15th, 18th, 21st, and 24th subcarriers in each first type DRU are non-data subcarriers, such as the non-data subcarriers in the above DRU 1 correspond to {-103, -76, -48, -21, 13, 40, 67, 95}. Among them, the 9th subcarrier and the 21st subcarrier are pilot subcarriers, such as the pilot subcarriers in the above DRU 1 correspond to {-48, 67}. The 6 non-data subcarriers except the 9th subcarrier and the 21st subcarrier are interference cancellation subcarriers, such as the interference cancellation subcarriers in the above 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.

In some embodiments, the 2nd, 5th, 8th, 11th, 14th, 17th, 20th, 23rd, and 26th subcarriers of every 26 subcarriers in the first type DRU are non-data subcarriers. Among them, the 8th subcarrier and the 20th subcarrier are pilot subcarriers, and the 7 non-data subcarriers except the 8th subcarrier and the 20th subcarrier are interference cancellation subcarriers. Optionally, the 8th subcarrier and the 20th subcarrier are also multiplexed as interference Eliminate subcarriers. Optionally, 7 non-data subcarriers except the 8th subcarrier and the 20th subcarrier are also pilot subcarriers.

It is worth noting that there may be many other combinations for 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.

Similarly, for 40MHz PPDU, 26-channel DRU1 to 26-channel DRU9 generates EDRU1 to EDRU9, and 26-channel DRU10 to 26-channel DRU18 generates EDRU10 to EDRU18. For 80MHz PPDU, 26-channel DRU1 to 26-channel DRU9 generates EDRU1 to EDRU9, 26-channel DRU10 to 26-channel DRU18 generates EDRU10 to EDRU18, and 26-channel DRU19 to 26-channel DRU28 generates EDRU19 to EDRU28. For 160MHz PPDU, from 26-channel DRU1 to 26-channel DRU9, EDRU1 to EDRU9 are generated accordingly; from 26-channel DRU10 to 26-channel DRU18, EDRU10 to EDRU18 are generated accordingly; from 26-channel DRU19 to 26-channel DRU28, EDRU19 to EDRU28 are generated accordingly; and from 26-channel DRU29 to 26-channel DRU36, EDRU29 to EDRU36 are generated accordingly.

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

Similarly, for 40MHz PPDU, the same operations are performed on the 52-channel DRU, 106-channel DRU, and 242-channel DRU to obtain the corresponding 52-channel EDRU, 106-channel EDRU, and 242-channel EDRU.

Similarly, for 160MHz PPDU, the same operations are 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.

In summary, the method provided in this embodiment, by redefining the non-data subcarriers in the first type DRU, can improve not only the transmission distance but also the transmission reliability when using the first type DRU to send wireless signals. Since the non-data subcarriers in the first type DRU and at least one non-data subcarrier in the second type DRU are located at different positions, the first type DRU and the second type DRU can be better distinguished.

For design 2:

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.

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.

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 above three ways of designing pilot subcarriers in the DRU.

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.

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. Among them, the 7th subcarrier and the 20th subcarrier are pilot subcarriers with the same position in the first type DRU and the second type DRU, and the 7 non-data subcarriers except the 7th subcarrier and the 20th subcarrier are interference elimination subcarriers. Optionally, the 7th subcarrier and the 20th subcarrier are also multiplexed as interference elimination subcarriers. Optionally, the 7 non-data subcarriers except the 7th subcarrier and the 20th subcarrier are also pilot subcarriers.

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. Among them, the 7th subcarrier and the 20th subcarrier are pilot subcarriers with the same position in the first type DRU and the second type DRU, and the 6 non-data subcarriers except the 7th subcarrier and the 20th subcarrier are interference elimination subcarriers. Optionally, the 7th subcarrier and the 20th subcarrier are also multiplexed as interference elimination subcarriers. Optionally, the 6 non-data subcarriers except the 7th subcarrier and the 20th subcarrier are also pilot subcarriers.

In some embodiments, the 3rd, 6th, 7th, 9th, 12th, 15th, 18th, 20th, 21st, and 24th subcarriers of every 26 subcarriers in the first type DRU are non-data subcarriers. Among them, the 7th subcarrier and the 20th subcarrier are pilot subcarriers with the same position in the first type DRU and the second type DRU, and the 8 non-data subcarriers except the 7th subcarrier and the 20th subcarrier are interference elimination subcarriers. Optionally, the 7th subcarrier and the 20th subcarrier are also multiplexed as interference elimination subcarriers. Optionally, the 8 non-data subcarriers except the 7th subcarrier and the 20th subcarrier are also pilot subcarriers.

It is worth noting that there may be other combinations of positions of non-data subcarriers in the first type DRU, which are not listed here one by one. Any combination that can make the number of non-data subcarriers in the first type DRU equal to the total number of data subcarriers and non-data subcarriers is Ratios that 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 all fall within the scope of protection of the embodiments of the present application.

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 described above. That is, every 26 subcarriers in the first type DRU include at least one pilot subcarrier in the same position as that in the second type DRU. Optionally, the first type DRU also includes at least one subcarrier other than the pilot subcarrier in 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 in 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 in the same position as that in the second type DRU.

For example, take a 26-channel DRU with 20MHz PPDU as an example, as shown in Table 9 below:

Table 9

Among them, each first-type DRU includes non-data subcarriers in the same position as the non-data subcarriers in the second-type DRU, such as the bold and underlined positions in the above table. For example, if the position of the non-data subcarrier in the second-type DRU corresponding to DRU1 is {-116, -102}, then the first-type DRU corresponding to DRU1 also includes two non-data subcarriers at positions {-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}.

It is worth noting that there may be many other combinations for 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.

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 one pilot subcarrier in the same position as that in the second type DRU. Optionally, the first type DRU also includes at least one subcarrier other than the pilot subcarrier in 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 in 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 in the same position as that in the second type DRU.

For example, take the 26-channel DRU of 20MHz PPDU as an example, as shown in Table 10 below:

Table 10

Each of the first type DRUs includes non-data subcarriers in the same position as the non-data subcarriers in the second type DRU. As shown in the bold and underlined positions in the above table. For example, the positions of the non-data subcarriers in the second type DRU corresponding to DRU1 are {-76, -48, 22}, and 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}.

For example, take the 26-channel DRU of 20MHz PPDU as an example, as shown in Table 11 below:

Table 11

Among them, each first-type DRU includes non-data subcarriers in the same position as the non-data subcarriers in the second-type DRU, such as the bold and underlined positions in the above table. For example, if the position of the non-data subcarrier in the second-type DRU corresponding to DRU1 is {-116, 10}, then the first-type DRU corresponding to DRU1 also includes two non-data subcarriers in the position {-116, 10}. In addition, the first-type DRU corresponding to DRU1 also includes non-data subcarriers in other positions, such as {-85, -43, -21, 49, 77, 104}.

It is worth noting that there may be many other combinations for 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.

Similarly, for 40MHz PPDU, 26-channel DRU1 to 26-channel DRU9 generates EDRU1 to EDRU9, and 26-channel DRU10 to 26-way DRU18 is generated from EDRU10 to EDRU18. For 80MHz PPDU, 26-way DRU1 to 26-way DRU9 is generated from EDRU1 to EDRU9, 26-way DRU10 to 26-way DRU18 is generated from EDRU10 to EDRU18, and 26-way DRU19 to 26-way DRU28 is generated from EDRU19 to EDRU28. For 160MHz PPDU, 26-way DRU1 to 26-way DRU9 is generated from EDRU1 to EDRU9, 26-way DRU10 to 26-way DRU18 is generated from EDRU10 to EDRU18, 26-way DRU19 to 26-way DRU28 is generated from EDRU19 to EDRU28, and 26-way DRU29 to 26-way DRU36 is generated from EDRU29 to EDRU36.

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

Similarly, for 40MHz PPDU, the same operations are performed on the 52-channel DRU, 106-channel DRU, and 242-channel DRU to obtain the corresponding 52-channel EDRU, 106-channel EDRU, and 242-channel EDRU.

Similarly, for 160MHz PPDU, the same operations are 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.

To summarize, the method provided in this embodiment, 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, it is possible to reduce the signaling used to indicate all non-data subcarriers in the first type DRU, and instead the signaling used to indicate all non-data subcarriers in the second DRU can be multiplexed, thereby reducing the signaling overhead.

FIG12 shows a flow chart of a method for sending a wireless signal provided by an exemplary embodiment of the present application. The method is executed by a first device, which is a signal sender and may be an AP or a STA. The method includes:

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

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 of DRU. The target indication information includes at least one of the following fields:

The first field;

The second field;

The third field.

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.

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

· Efficient variant user information field;

Very high throughput variant user information field;

· Extremely reliable variant user information field;

General information field;

Special user information fields.

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

In some embodiments, whether to use the first type DRU is indicated based on a reserved bit in the HE variant user information (HE variant User Info) field and/or the EHT variant user information (EHT variant User Info) and/or the Ultra High Reliability (UHR) variant user information (UHR variant User Info) in the basic trigger frame. Optionally, one reserved bit can be used for indication. Exemplarily, when the value of the reserved bit is a 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 a 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 a first value, it indicates that the RU is used; when the value of at least two reserved bits is a second value, it indicates that the first type DRU is used; when the value of at least two reserved bits is a third value, it indicates that the second type DRU is used.

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.

Exemplarily, as shown in FIG. 13, the basic trigger frame includes at least one of a media access controller (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 the special user information field, the user information 1 field to the user information N field, and the user information 1 field. At least one of. The special user information field in the user information list field in the MAC frame body includes at least one of the application key identifier (Application Key Identifier, AID) field, the physical layer version flag field, the uplink bandwidth extension field, the EHT spatial multiplexing 1 field, the EHT spatial multiplexing 2 field, the universal signal (U-SIG) ignore and check field, the reserved field, and the trigger frame subclass related user information field. The trigger frame subclass related user information field in the special user information field in the user information list field in the MAC frame body includes at least the reserved field. The user information 1 field in the user information list field in the MAC frame body includes at least one of the AID field, the resource unit allocation field, the uplink forward error correction code (Forward Erro Correction, FEC) coding type field, the uplink EHT modulation and coding category field, the reserved field, the spatial stream allocation or random access resource unit information field, the uplink target received power field, the primary and secondary fields, and the 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 the multi-user MAC protocol data unit (MAC Protocol Data Unit, MPDU) time slot factor field, the traffic identifier (Traffic Identifier, TID) aggregation limit field, the reserved field, and the preferred access category field. It is worth noting that the above fields are only used as an exemplary description in the embodiment of the present application. In other possible embodiments, the order, quantity and upper and lower attribution relationship between the above fields may also be other situations, and the embodiment of the present application does not limit this.

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, whether there are more trigger frames field, whether channel measurement is required field, an uplink bandwidth field, a guard interval (GI) and a HE-LTF type/or a transmission opportunity sharing mode field, a reserved field, a HE-LTF symbol number 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 fields are only used as an exemplary description in the embodiment of the present application. In other possible embodiments, the order, quantity, and upper and lower attribution relationship between the above fields may also be other situations, and the embodiment of the present application does not limit this.

In some embodiments, the second field is used to indicate whether the first type DRU is used to transmit data in the uplink direction. Optionally, the second field is used to indicate whether the first type DRU is used to transmit data in the uplink direction based on non-triggering. In the uplink transmission based on non-triggering, when the signal sender at a longer distance learns that the signal receiver is subject to a certain degree of interference, in order to improve reliability, the signal sender can use the first type DRU for uplink transmission.

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

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

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

·The first newly added field.

In some embodiments, whether a 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.

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.

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

In some embodiments, the third field is used to indicate whether to use the first type DRU to transmit data in the downlink direction. In downlink transmission, in order to reduce the rate adaptation load and complexity, and/or to increase the transmission distance, the signal sender can use the second type DRU for transmission. When the signal sender learns that the signal receiver at a longer distance is subject to a certain degree of interference, in order to improve reliability, the signal sender can use the first type DRU for downlink transmission.

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

Fields in the downlink MU PPDU;

Fields in the downlink HE SU PPDU;

· The second newly added field.

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

Exemplarily, 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 unified 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 on 20 MHz. The content channel includes at least one of a general field and a user-specific field. The general field also includes a content channel. The unified signal (U-SIG) overflow field and the non-orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access) OFDMA user number field can be divided into two fields: the unified signal (U-SIG) overflow field and the non-OFDMA user number field. The unified signal (U-SIG) overflow field also includes the spatial multiplexing field, the protection interval and LIF size field, the EHT-LTF symbol number field, the LDPC additional symbol fragment field, the filling factor field before FEC, the packet extension deambiguation field, and at least one of the ignored fields. The user-specific field includes the user field, the check code and the tail field, and the padding field. The user field, the check code and the tail field include at least one of the site identifier field, the modulation and coding order field, the reserved field, the spatial stream number field, the beam training field, the coding field, the check code field, and the tail field. It is worth noting that the above-mentioned fields are only used as an exemplary description 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.

In some embodiments, whether a first type DRU is used to transmit data in the downlink direction is indicated in a general field in the UHR-SIG field and/or an ignored field and/or a reserved field in the user-specific field in a 20MHz or 40MHz or 80MHz UHR MU PPDU for orthogonal frequency division multiple access transmission. Optionally, at least one bit in the four ignored fields is used to indicate whether the PPDU uses a first type DRU on a 20MHz 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 indicate jointly. 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.

Exemplarily, 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 unified 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 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 includes at least one of a spatial multiplexing field, a guard interval and a LIF size field, an EHT-LTF symbol number field, an LDPC additional symbol fragment field, a filling factor field before FEC, 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, the check code and the tail field include at least one of the site identifier field, the modulation and coding order field, the reserved field, the spatial stream number field, the beam training field and the coding field. It is worth noting that the above 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 fields may also be other situations, which are not limited in the embodiment of the present application.

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

The ignored field described in the embodiment of the present application is a description method for the field in the current communication protocol. After the ignored field is used to indicate whether the first type of DRU is used, the name of the ignored field may also be other situations, which is not limited in the embodiment of the present application. In addition, in the case where only some bits in the ignored field need to be used to indicate whether the first type of DRU is used, the ignored field may also be divided into a field for indicating whether the first type of DRU is used and an ignored field.

Optionally, refer to Table 12 below:

Table 12

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.

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.

In some embodiments, for an 80MHz UHR MU PPDU, the 20MHz channels from low to high frequencies are recorded 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 of 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 of 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 of 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 of 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 of 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 of 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 of DRU is used on L20-8.

Similarly, an ignore field and/or a reserved field in a common field and/or a user-specific field in the EHT-SIG field in a 160 MHz UHR MU PPDU for orthogonal frequency division multiple access transmission may indicate whether a first type DRU is used.

Similarly, the general field and/or the ignored field and/or the reserved field in the user-specific field in the EHT-SIG field in the 320MHz UHR MU PPDU for OFDMA transmission may indicate whether the first type DRU is used. However, the above fields are not sufficient to indicate all 20MHz sub-channels in the entire 320MHz, so it is possible to limit the indication of whether the first type DRU is used only on the primary 160MHz or only on the secondary 160MHz, or add 8 bits to the general field in the EHT-SIG field to indicate whether the first type DRU is used on the corresponding 20MHz sub-channels from L20-9 to L20-16.

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

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. Wherein, in the case where the above step 320 can be implemented as a combined embodiment with the above step 220, generally, step 320 is performed before step 220.

FIG17 shows a flow chart 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:

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

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 in all subcarriers.

In some embodiments, the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers. In some embodiments, all non-data subcarriers are pilot subcarriers. In some embodiments, all non-data subcarriers are interference elimination subcarriers. In some embodiments, part of the non-data subcarriers are pilot subcarriers and the other part are interference elimination subcarriers. The pilot subcarriers can be multiplexed as interference elimination subcarriers or the interference elimination subcarriers can be multiplexed as pilot subcarriers. In the case where the pilot subcarriers and the interference elimination subcarriers can be multiplexed with each other, it is equivalent to that all non-data subcarriers are pilot subcarriers or all non-data subcarriers are interference elimination subcarriers. In some embodiments, the non-data subcarriers also include empty subcarriers.

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

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:

The first field;

The second field;

The third field.

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

FIG18 shows a flow chart of a method for sending a wireless signal provided by an exemplary embodiment of the present application. The method is executed by a first device, which is a signal sender and may be an AP or a STA. The method includes:

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

In some embodiments, the DRU group includes adjacent first-type DRUs and second-type DRUs. For example, the DRU group includes 26-way DRU1 and 26-way DRU2, wherein 26-way DRU1 is the first-type DRU and 26-way DRU2 is the second-type DRU.

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 exceeds thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

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. 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 equal to or greater than one-fifth. 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 equal to or greater than three-tenths.

In some embodiments, in order 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 demand for 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 should also be less than a quantity threshold. The ratio of the total number 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.

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

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:

The first field;

The second field;

The third field.

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

In some embodiments, as shown in FIG. 19 , the method further includes:

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

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 the 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. Exemplary, as shown in the following Table 13:

Table 13

Exemplarily, the resource unit allocation field value used to indicate the 26-way RU1 is also used to indicate the 52-way DRU1 composed of the 26-way DRU1 and the 26-way DRU2, wherein the 26-way DRU1 is the first type DRU and the 26-way DRU2 is the second type DRU; or wherein the 26-way DRU1 is the second type DRU and the 26-way DRU2 is the first type DRU.

Optionally, the corresponding relationship of the above table can also be shown in Table 14:

Table 14

Exemplarily, the resource unit allocation field value used to indicate the 26-way RU2 is also used to indicate the 52-way DRU2 composed of the 26-way DRU2 and the 26-way DRU3, wherein the 26-way DRU2 is the first type DRU and the 26-way DRU3 is the second type DRU; or wherein the 26-way DRU2 is the second type DRU and the 26-way DRU3 is the first type DRU.

It should be noted that, generally speaking, in order to prevent conflicts caused by repeated allocation of resources, the above Table 13 and Table 14 cannot be used interchangeably. However, in actual use, the above Table 13 and Table 14 can be used interchangeably while ensuring that no conflicts occur.

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

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

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

Similarly, RU1 with 52 connections to RU4 with 26 connections correspond to DRU1 with 106 connections to DRU4 with 106 connections respectively.

Similarly, 52-way RU5 to 26-way RU8 correspond to 106-way DRU5 to 106-way DRU8 respectively.

Similarly, 52-way RU9 to 26-way RU12 correspond to 106-way DRU9 to 106-way DRU12 respectively.

Similarly, 52-way RU13 to 26-way RU16 correspond to 106-way DRU13 to 106-way DRU16 respectively.

Similarly, 106-way RU1 to 106-way RU4 correspond to 242-way DRU1 to 242-way DRU4 respectively.

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

Similarly, 242 through RU1 to 242 through RU4 correspond to 484 through DRU1 to 484 through DRU4 respectively.

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.

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

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

In some embodiments, in the 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:

Table 15

The resource unit allocation field value used to indicate the 52-way RU1 is also used to indicate the 52-way DRU1 composed of the 26-way DRU1 and the 26-way DRU2. The 26-way DRU1 is a first type DRU and the 26-way DRU2 is a second type DRU; or the 26-way DRU1 is a second type DRU and the 26-way DRU2 is a first type DRU.

In some embodiments, in the 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 16:

Table 16

The resource unit allocation field value used to indicate the 52-way RU1 is also used to indicate the 52-way DRU1 composed of the 26-way DRU2 and the 26-way DRU3. The 26-way DRU1 is a first type DRU and the 26-way DRU2 is a second type DRU; or the 26-way DRU1 is a second type DRU and the 26-way DRU2 is a first type DRU.

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. Wherein, when the above step 620 can be implemented as a combined embodiment with the above step 520, generally, step 620 is performed before step 520.

FIG20 shows a flow chart 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:

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

In some embodiments, the DRU group includes adjacent first-type DRUs and second-type DRUs. For example, the DRU group includes 26-way DRU1 and 26-way DRU2, wherein 26-way DRU1 is the first-type DRU and 26-way DRU2 is the second-type DRU.

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 exceeds thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

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. 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 equal to or greater than one-fifth. 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 equal to or greater than three-tenths.

In some embodiments, in order 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 demand for 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.

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

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:

The first field;

The second field;

The third field.

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

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 of the resource unit allocation field value, see the above step 620.

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

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

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

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 in all subcarriers.

In some embodiments, the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers. In some embodiments, all non-data subcarriers are pilot subcarriers. In some embodiments, all non-data subcarriers are interference elimination subcarriers. In some embodiments, part of the non-data subcarriers are pilot subcarriers and the other part are interference elimination subcarriers. The pilot subcarriers can be multiplexed as interference elimination subcarriers or the interference elimination subcarriers can be multiplexed as pilot subcarriers. In the case where the pilot subcarriers and the interference elimination subcarriers can be multiplexed with each other, it is equivalent to that all non-data subcarriers are pilot subcarriers or all non-data subcarriers are interference elimination subcarriers. In some embodiments, the non-data subcarriers also include empty subcarriers.

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 exceeds 13. Exemplarily, 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.

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.

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.

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.

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.

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:

Evenly distributed in every 26 subcarriers;

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

Evenly distributed in the bandwidth of a subchannel.

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

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

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

In some embodiments, the variance of the interval between two adjacent non-data subcarriers in the first type DRU is less than a threshold. Optionally, the threshold is predefined or dynamically adjusted according to 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.

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

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;

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.

Among them, 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 thirteenth. In some embodiments, the second type DRU can be understood as a traditional type DRU, that is, it can be understood as a DRU that has been proposed in the above-mentioned related proposals. In the embodiment of the present application, the first type DRU has a larger proportion of non-data subcarriers in all subcarriers than the second type DRU.

For details, please refer to the above-mentioned Design 1 and Design 2.

In some embodiments, the apparatus further comprises:

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

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

One point that needs to be explained is 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.

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

The receiving module 2210 is used to receive a wireless signal sent by a first type DRU.

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 in all subcarriers.

In some embodiments, the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers. In some embodiments, all non-data subcarriers are pilot subcarriers. In some embodiments, all non-data subcarriers are interference elimination subcarriers. In some embodiments, part of the non-data subcarriers are pilot subcarriers and the other part are interference elimination subcarriers. The pilot subcarriers can be multiplexed as interference elimination subcarriers or the interference elimination subcarriers can be multiplexed as pilot subcarriers. In the case where the pilot subcarriers and the interference elimination subcarriers can be multiplexed with each other, it is equivalent to that all non-data subcarriers are pilot subcarriers or all non-data subcarriers are interference elimination subcarriers. In some embodiments, the non-data subcarriers also include empty subcarriers.

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

In some embodiments, the apparatus further comprises:

The sending module 2220 is configured to send target indication information. The target indication information is used to indicate whether the first device uses a first type of DRU.

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

One point that needs to be explained is 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.

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

The sending module 2310 is used to send a wireless signal using the DRU group.

In some embodiments, the DRU group includes adjacent first-type DRUs and second-type DRUs. For example, the DRU group includes 26-way DRU1 and 26-way DRU2, wherein 26-way DRU1 is the first-type DRU and 26-way DRU2 is the second-type DRU.

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 exceeds thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

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. 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 equal to or greater than one-fifth. 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 equal to or greater than three-tenths.

In some embodiments, in order 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 demand for 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.

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

In some embodiments, the above apparatus further comprises:

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.

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

The receiving module 2320 is further used 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.

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

One point that needs to be explained is 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.

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

The receiving module 2410 is used to receive a wireless signal sent by the DRU group.

In some embodiments, the DRU group includes adjacent first-type DRUs and second-type DRUs. For example, the DRU group includes 26-way DRU1 and 26-way DRU2, wherein 26-way DRU1 is the first-type DRU and 26-way DRU2 is the second-type DRU.

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 exceeds thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference cancellation subcarriers.

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. 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 equal to or greater than one-fifth. 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 equal to or greater than three-tenths.

In some embodiments, in order 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 demand for 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.

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

In some embodiments, the apparatus further comprises:

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.

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

The sending module 2420 is further used to send 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 of the resource unit allocation field value, see the above step 620.

One point that needs to be explained is 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.

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 .

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.

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

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

In addition, memory 2504 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, and volatile or non-volatile storage devices include but are 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 tapes, disk storage or other magnetic storage devices.

The 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 in 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, the random access memory may include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

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 a network device, it is used to implement each step in the above-mentioned wireless signal sending method and/or receiving method.

An embodiment of the present application also provides a computer program product or a computer program, which includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of a terminal or a 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.

Those skilled in the art should be aware that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented with 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 the communication media include any media that facilitates the transmission of a computer program from one place to another. The storage medium can be any available medium that a general or special-purpose computer can access.

The above description is only 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 protection scope of the present application.

Claims (44)

A method for sending a wireless signal, characterized in that the method comprises: Sending the wireless signal using a first type DRU; The first type DRU includes data subcarriers and non-data subcarriers, the ratio of the number of non-data subcarriers to the total number of data subcarriers and non-data subcarriers is greater than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers. A method for receiving a wireless signal, characterized in that the method comprises: receiving the wireless signal sent using a first type DRU; The first type DRU includes data subcarriers and non-data subcarriers, the ratio of the number of non-data subcarriers to the total number of data subcarriers and non-data subcarriers is greater than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers. A method for sending a wireless signal, characterized in that the method comprises: Using the DRU group to send the wireless signal; 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 exceeds thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers. A method for receiving a wireless signal, characterized in that the method comprises: receiving the wireless signal sent using the DRU group; 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 exceeds thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers. The method according to any one of claims 1 to 4, characterized in that Positions of all non-data subcarriers in the first type DRU are evenly distributed, or a variance of an interval between two adjacent non-data subcarriers in the first type DRU is less than a threshold. The method according to claim 5, characterized in that the uniform distribution method includes at least one of the following: Evenly distributed in every 26 subcarriers; Evenly distributed in a bandwidth corresponding to a first type DRU; Evenly distributed in the bandwidth of a subchannel. 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 DRU are different from the position of at least one non-data subcarrier in the second type DRU; The ratio of the number of the non-data subcarriers in the second type DRU to the total number of the data subcarriers and the non-data subcarriers is thirteenth. The method according to claim 7, characterized in that the first type DRU includes n*26 subcarriers, where n is a positive integer; 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. The method according to claim 8 is characterized in that the 3rd, 6th, 9th, 12th, 15th, 18th, 21st, and 24th subcarriers in every 26 subcarriers in the first type DRU are the non-data subcarriers. The method according to claim 9 is characterized in that the 9th subcarrier and the 21st subcarrier are the pilot subcarriers, and the 6 non-data subcarriers except the 9th subcarrier and the 21st subcarrier are the interference elimination subcarriers. The method according to claim 10 is characterized in that the 9th subcarrier and the 21st subcarrier are also multiplexed as the interference elimination subcarrier. The method according to claim 9 or 10 is characterized in that 6 non-data subcarriers except the 9th subcarrier and the 21st subcarrier are also the pilot subcarriers. The method according to claim 8 is characterized in that the 2nd, 5th, 8th, 11th, 14th, 17th, 20th, 23rd, and 26th subcarriers in every 26 subcarriers in the first type DRU are the non-data subcarriers. The method according to claim 13 is characterized in that the 8th subcarrier and the 20th subcarrier are the pilot subcarriers, and the 7 non-data subcarriers except the 8th subcarrier and the 20th subcarrier are the interference elimination subcarriers. The method according to claim 14 is characterized in that the 8th subcarrier and the 20th subcarrier are also multiplexed as the interference elimination subcarrier. The method according to claim 13 or 14 is characterized in that 7 non-data subcarriers except the 8th subcarrier and the 20th subcarrier are also the pilot subcarriers. The method according to any one of claims 1 to 6, characterized in that 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; The ratio of the number of the non-data subcarriers in the second type DRU to the total number of the data subcarriers and the non-data subcarriers is thirteenth. The method according to claim 17, characterized in that the first type DRU includes n*26 subcarriers, where n is a positive integer; There is at least one non-data subcarrier in every eight subcarriers in the first type DRU. The method according to claim 18 is characterized in that the 1st, 4th, 7th, 10th, 13th, 16th, 20th, 23rd, and 26th subcarriers in every 26 subcarriers in the first type DRU are the non-data subcarriers. The method according to claim 19 is characterized in that the 7th subcarrier and the 20th subcarrier are the pilot subcarriers with the same position in the first type DRU and the second type DRU, and the 7 non-data subcarriers except the 7th subcarrier and the 20th subcarrier are the interference elimination subcarriers. The method according to claim 20 is characterized in that the 7th subcarrier and the 20th subcarrier are also multiplexed as the interference elimination subcarrier. The method according to claim 19 or 20 is characterized in that 7 non-data subcarriers except the 7th subcarrier and the 20th subcarrier are also the pilot subcarriers. The method according to claim 18 is characterized in that the 2nd, 5th, 7th, 10th, 13th, 18th, 20th, and 23rd subcarriers in every 26 subcarriers in the first type DRU are the non-data subcarriers. The method according to claim 23 is characterized in that the 7th subcarrier and the 20th subcarrier are the pilot subcarriers with the same position in the first type DRU and the second type DRU, and the 6 non-data subcarriers except the 7th subcarrier and the 20th subcarrier are the interference elimination subcarriers. The method according to claim 24 is characterized in that the 7th subcarrier and the 20th subcarrier are also multiplexed as the interference elimination subcarrier. The method according to claim 23 or 24 is characterized in that 6 non-data subcarriers except the 7th subcarrier and the 20th subcarrier are also the pilot subcarriers. The method according to any one of claims 1 to 26, characterized in that the method further comprises: Indicate whether to use the first type DRU or the DRU group including the first type DRU based on the target indication information. The method according to claim 27, characterized in that the target indication information includes at least one of the following fields: First field; The second field; The third field. The method according to claim 28 is characterized in that the first field is used to indicate whether the first type of DRU is used to transmit data in the uplink direction. The method according to claim 29, characterized in that the first field includes at least one of the following: Efficient variant user information field; Very high throughput variant user information field; Very high reliability variant user information field; General information fields; Special user information fields. The method according to claim 30 is characterized in that the first field is a field in a basic trigger frame. The method according to claim 31, characterized in that the first field includes m bits, and each bit 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 of 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 of DRU; Wherein, the value of m is a positive integer, and the value of i is a positive integer less than or equal to m. The method according to claim 28 is characterized in that the second field is used to indicate whether the first type DRU is used to transmit data in the uplink direction. The method according to claim 33, characterized in that the second field includes at least one of the following fields: Fields in the uplink multi-user physical layer protocol data unit MU PPDU; Fields in the uplink high-efficiency single-user physical layer protocol data unit HE SU PPDU; The first newly added field. The method according to claim 28 is characterized in that the third field is used to indicate whether the first type DRU is used to transmit data in the downlink direction. The method according to claim 35, characterized in that the third field includes at least one of the following fields: Fields in the downlink MU PPDU; Fields in the downlink HE SU PPDU; The second newly added field. The method according to any one of claims 1 to 26, characterized in that the method further comprises: The first type DRU and the second type DRU are indicated based on a resource unit allocation field value. A wireless signal transmitting device, characterized in that the device comprises: A sending module, configured to send the wireless signal using a first type DRU; The first type DRU includes data subcarriers and non-data subcarriers, the ratio of the number of non-data subcarriers to the total number of data subcarriers and non-data subcarriers is greater than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers. A wireless signal receiving device, characterized in that the device comprises: A receiving module, configured to receive the wireless signal sent using the first type DRU; The first type DRU includes data subcarriers and non-data subcarriers, the ratio of the number of non-data subcarriers to the total number of data subcarriers and non-data subcarriers is greater than thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers. A wireless signal transmitting device, characterized in that the device comprises: A sending module, used for sending the wireless signal using a DRU group; 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 exceeds thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers. A wireless signal receiving device, characterized in that the device comprises: A receiving module, used to receive the wireless signal sent by the DRU group; 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 exceeds thirteenth, and the non-data subcarriers include at least one of pilot subcarriers and interference elimination subcarriers. A communication device, characterized in that the communication device comprises: processor; a transceiver connected to the processor; a memory for storing executable instructions for the processor; 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. 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. 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 them to implement the wireless signal sending method and/or receiving method as described in any one of claims 1 to 37.