Communication method, apparatus and system

Abstract

The present application discloses a communication method, comprising: sending or receiving an orthogonal frequency division multiplexing (OFDM) symbol on a target distributed resource unit (DRU), wherein the target DRU is distributed in a first data pilot region and a second data pilot region in subcarrier planning; for the target DRU, the first data pilot region comprises M1 subcarrier groups, and the second data pilot region comprises M2 subcarrier groups; each subcarrier group among the M1 subcarrier groups comprises at least two subcarriers having continuous indexes, and the indexes of two adjacent subcarrier groups among the M1 subcarrier groups are discontinuous; each subcarrier group among the M2 subcarrier groups comprises at least two subcarriers having continuous indexes, and the indexes of two adjacent subcarrier groups among the M2 subcarrier groups are discontinuous. Thus, each DRU can reach a relatively large power amplification factor.

Description

Communication method, apparatus and system

[0001] This application claims priority to the Chinese patent application No. 202410472522.5, filed on April 18, 2024, with the State Intellectual Property Office of China, and entitled "Communication method, apparatus and system", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of wireless communication, and in particular to a communication method, apparatus and system. BACKGROUND

[0003] European Telecommunications Standards Institute (ETSI) has published regulations on 6GHz spectrum, which limits the maximum transmit power to 23dBm (decibel-milliwatts) and the maximum power spectral density to 10dBm / MHz (decibel-milliwatts / megahertz). The United States Federal Communications Commission (FCC) has also issued regulations on 6GHz spectrum, which defines a low power indoor (LPI) communication mode and strictly limits the maximum transmit power and the maximum power spectral density. For example, for an access point (AP), the maximum transmit power is limited to 30dBm and the maximum power spectral density is limited to 5dBm / MHz. For a station (STA), the maximum transmit power is limited to 24dBm and the maximum power spectral density is limited to -1dBm / MHz. The transmit power of a device is limited by both the maximum power and the maximum power spectral density, i.e., the transmit power cannot exceed the maximum power value, and the power spectral density (PSD) of the transmitted signal cannot exceed the maximum power spectral density. Compared with the maximum power, the maximum power spectral density is more restrictive, and the maximum transmit power is usually more limited by the power spectral density. For a station, when the bandwidth is 320MHz, the transmit power of the station reaches the limit of the specified maximum power. When the bandwidth is less than 320MHz, because of the limitation of the maximum power spectral density, the station can only transmit at a lower power (here, the lower power refers to a power lower than the specified maximum power).

[0004] Based on this, a distributed resource unit (DRU) technology is proposed to improve the sending power. The basic idea of the DRU is to disperse the continuous subcarriers in a resource unit (RU) to the widest bandwidth possible, so as to reduce the number of subcarriers in 1 MHz, thereby realizing the increase of the sending power of each subcarrier and further improving the total sending power.

[0005] Therefore, how to design the DRU becomes a problem to be solved. SUMMARY

[0006] Embodiments of the present application provide a communication method, apparatus and system, which not only perfect the subcarrier planning under the first bandwidth, but also enable each DRU to achieve a larger power amplification factor.

[0007] In a first aspect, embodiments of the present application provide a communication method, which can be applied to a first communication device, which can include a WLAN device (including a Wi-Fi device, etc.), or a chip or functional module or processing system, etc. provided in the WLAN device. The method comprises:

[0008] The first communication device generates an orthogonal frequency division multiplexing (OFDM) symbol; and transmits the OFDM symbol on a target DRU; wherein the target DRU is distributed in a first data pilot region and a second data pilot region in a subcarrier planning; for the target DRU, the first data pilot region includes M1 subcarrier groups, and the second data pilot region includes M2 subcarrier groups, M1 and M2 are both positive integers; each of the M1 subcarrier groups includes at least two subcarriers with consecutive indexes, and the indexes of two adjacent subcarrier groups in the M1 subcarrier groups are discontinuous; each of the M2 subcarrier groups includes at least two subcarriers with consecutive indexes, and the indexes of two adjacent subcarrier groups in the M2 subcarrier groups are discontinuous.

[0009] The indexes of two adjacent subcarrier groups in the M1 subcarrier groups (or the M2 subcarrier groups) are discontinuous, that is, for two adjacent subcarrier groups, taking a first subcarrier group and a second subcarrier group as an example, the first subcarrier group can be located to the left of the second subcarrier group (or the indexes of the subcarriers in the first subcarrier group are all less than the indexes of the subcarriers in the second subcarrier group), and the index of the subcarrier with the largest index in the first subcarrier group is discontinuous with the index of the subcarrier with the smallest index in the second subcarrier group. For ease of description, the first subcarrier group is located to the left of the second subcarrier group is taken as an example for description hereinafter.

[0010] In the embodiments of the present application, there can be at least two continuous subcarriers in the subcarriers in which the target DRU is located in the first data pilot region, and there can be at least two continuous subcarriers in the subcarriers in which the target DRU is located in the second data pilot region. The continuous subcarriers can simultaneously carry signals, so that when the second communication device performs channel smoothing, the fitting error can be reduced, the accuracy of channel estimation can be improved, and the packet error rate can be reduced. At the same time, the target DRU shown in the embodiments of the present application can also achieve a larger power amplification factor, thereby improving the transmission power of the first communication device.

[0011] In a second aspect, the embodiments of the present application provide a communication method, which is applied to a second communication device. The second communication device can include a WLAN device (including a Wi-Fi device, etc.), or can be a chip or a functional module or a processing system, etc. arranged in the WLAN device. The method includes:

[0012] The second communication device receives an OFDM symbol on a target DRU; and the second communication device parses the OFDM symbol; wherein the target DRU can be distributed in a first data pilot region and a second data pilot region in a subcarrier plan; for the target DRU, the first data pilot region includes M1 subcarrier groups, and the second data pilot region includes M2 subcarrier groups, M1 and M2 are both positive integers; each of the M1 subcarrier groups includes at least two subcarriers with continuous indexes, and the indexes of two adjacent subcarrier groups in the M1 subcarrier groups are discontinuous; each of the M2 subcarrier groups includes at least two subcarriers with continuous indexes, and the indexes of two adjacent subcarrier groups in the M2 subcarrier groups are discontinuous.

[0013] As an example, the first communication device can be an access point (AP), and the second communication device can be a non-access point station (non-AP STA). For example, the AP can be a Wi-Fi device, or a chip or a functional module arranged in the Wi-Fi device, etc. For example, the non-AP STA can be a Wi-Fi device, or a chip or a functional module arranged in the Wi-Fi device, etc. As another example, the first communication device can be a non-AP STA, and the second communication device can be an AP. As yet another example, the first communication device and the second communication device can both be a multi-link device (MLD), etc., which will not be listed one by one here.

[0014] The beneficial effects of the second aspect can be referred to the first aspect, which will not be described in detail here.

[0015] With reference to the first aspect or the second aspect, in a possible implementation, the number of subcarriers in each of the M1 subcarrier groups can be the same as the number of subcarriers in each of the M2 subcarrier groups.

[0016] With reference to the first aspect or the second aspect, in a possible implementation, the sum of M1 and M2 corresponds to the size of the target DRU.

[0017] In the embodiments of the present application, the values of M1 and M2 can depend on the size of the target DRU. In other words, the values of M1 and M2 can be determined by the size of the target DRU and the number of subcarriers in each subcarrier group.

[0018] With reference to the first aspect or the second aspect, in a possible implementation, each of the M1 subcarrier groups includes first, second, and third subcarriers that are consecutive in index, and the second subcarrier is located between the first and third subcarriers; or each of the M2 subcarrier groups includes first, second, and third subcarriers that are consecutive in index, and the second subcarrier is located between the first and third subcarriers.

[0019] In the embodiments of the present application, each subcarrier group can include three subcarriers that are consecutive in index, such as a first, second, and third subcarrier; or each subcarrier group can include six subcarriers that are consecutive in index, and so on, which are not listed one by one here.

[0020] With reference to the first aspect or the second aspect, in a possible implementation, the two adjacent subcarrier groups in the M1 subcarrier groups include a first subcarrier group and a second subcarrier group, and the number of subcarriers spaced between the first and second subcarrier groups is greater than or equal to 3; or the two adjacent subcarrier groups in the M2 subcarrier groups include a first subcarrier group and a second subcarrier group, and the number of subcarriers spaced between the first and second subcarrier groups is greater than or equal to 3.

[0021] The first and second subcarrier groups in the embodiments of the present application are relative to the M1 subcarrier groups, or relative to the M2 subcarrier groups. The number of subcarriers spaced between the first and second subcarrier groups can be understood as the number of subcarriers spaced between the subcarrier with the largest index in the first subcarrier group and the subcarrier with the smallest index in the second subcarrier group.

[0022] In the embodiments of the present application, for the M1 subcarrier groups (i.e. for the first data pilot region), the number of subcarriers between the adjacent two subcarrier groups is greater than or equal to 3, and for the M2 subcarrier groups (i.e. for the second data pilot region), the number of subcarriers between the adjacent two subcarrier groups is greater than or equal to 3. Thus, the subcarriers in the target DRU are distributed as dispersed as possible, and the power amplification factor is improved.

[0023] In a possible implementation of the first aspect or the second aspect, the target DRU includes 484 subcarriers, and the number of subcarriers between the first subcarrier group and the second subcarrier group is equal to the first value.

[0024] For example, the first value is 3 or the first value is 6.

[0025] In a possible implementation of the first aspect or the second aspect, the target DRU can be a 484-tone DRU 1 or a 484-tone DRU 2, and the difference between the index of the pth subcarrier in the 484-tone DRU 1 and the index of the pth subcarrier in the 484-tone DRU 2 is equal to the second value.

[0026] For example, the second value is 3.

[0027] In the embodiments of the present application, there are at least two continuous subcarriers in the 484-tone DRU, which can simultaneously carry signals, so that the fitting error can be reduced when performing channel smoothing, the accuracy of channel estimation is improved, and the packet error rate is reduced. Meanwhile, for the 484-tone DRU, at most 7 subcarriers in any 13 continuous subcarriers can carry signals, and thus the power amplification factor of each subcarrier is 1.86 (i.e. 13 / 7=1.86), which reaches the maximum power amplification factor that the 484-tone DRU can reach.

[0028] In a possible implementation of the first aspect or the second aspect, the target DRU includes 242 subcarriers, and the number of subcarriers between the first subcarrier group and the second subcarrier group is equal to 9.

[0029] In the embodiments of the present application, for the M1 subcarrier groups in the first data pilot region, or for the M2 subcarrier groups in the second data pilot region, the number of subcarriers between the adjacent two subcarrier groups can be equal to 9.

[0030] With reference to the first aspect or the second aspect, in a possible implementation, the target DRU is any one of: a 242-tone DRU 1, a 242-tone DRU 2, a 242-tone DRU 3, or a 242-tone DRU 4; and wherein the 242-tone DRU 1 to the 242-tone DRU 4 satisfy at least one of: a difference between an index of a p th subcarrier in the 242-tone DRU 1 and an index of the p th subcarrier in the 242-tone DRU 2 is greater than or equal to a second value; a difference between the index of the p th subcarrier in the 242-tone DRU 2 and an index of a p th subcarrier in the 242-tone DRU 3 is greater than or equal to the second value; and a difference between the index of the p th subcarrier in the 242-tone DRU 3 and an index of a p th subcarrier in the 242-tone DRU 4 is greater than or equal to the second value.

[0031] For example, the second value is 3.

[0032] In the embodiments of the present application, there are at least two continuous subcarriers in the 242-tone DRU, which can simultaneously carry signals, so that the fitting error can be reduced when performing channel smoothing, the accuracy of channel estimation is improved, and the packet error rate is reduced. Meanwhile, for the 242-tone DRU, at most 4 subcarriers in any 13 continuous subcarriers can carry signals, so that the power amplification multiple of each subcarrier is 3.25 (i.e., 13 / 4 = 3.25), which reaches the maximum power amplification multiple that the 242-tone DRU can reach. For example, for the 242-tone DRU, at most 3 subcarriers in any 13 continuous subcarriers can carry signals, and since (242 / 3) * 13 = 1048, 1048 > 1024, which exceeds the 1024 subcarriers corresponding to the 80MHz bandwidth, at most 4 subcarriers in any 13 continuous subcarriers in the 242-tone DRU can carry signals, which realizes the maximum power amplification multiple.

[0033] With reference to the first aspect or the second aspect, in a possible implementation, the target DRU includes 8 pilot subcarriers, and the pilot subcarriers can be included in the second subcarriers.

[0034] In the embodiments of the present application, for the 242-tone DRU, each 242-tone DRU can include 8 pilot subcarriers. For the 484-tone DRU, each 484-tone DRU can include 16 pilot subcarriers.

[0035] With reference to the first aspect or the second aspect, in a possible implementation, the 8 pilot subcarriers include 2 adjacent pilot subcarriers in the second subcarrier of each of the two adjacent subcarrier groups.

[0036] With reference to the first aspect or the second aspect, in a possible implementation, the second data pilot region further includes N single subcarriers, where N is an integer greater than or equal to 2.

[0037] With reference to the first aspect or the second aspect, in a possible implementation, the second data pilot region further includes N single subcarriers, where 2 single subcarriers in the N single subcarriers have consecutive indexes.

[0038] With reference to the first aspect or the second aspect, in a possible implementation, each of the M1 subcarrier groups includes S subcarriers, where the difference between the index of the subcarrier with the largest index and the index of the subcarrier with the smallest index in the S subcarriers is greater than or equal to S, and S is an integer greater than or equal to 3.

[0039] With reference to the first aspect or the second aspect, in a possible implementation, each of the M2 subcarrier groups includes S subcarriers, where the difference between the index of the subcarrier with the largest index and the index of the subcarrier with the smallest index in the S subcarriers is greater than or equal to S, and S is an integer greater than or equal to 3.

[0040] With reference to the first aspect or the second aspect, in a possible implementation, each of the M1 subcarrier groups includes a first subcarrier, a second subcarrier, a third subcarrier, and a fourth subcarrier, the second subcarrier is located between the first subcarrier and the third subcarrier, and the third subcarrier is located between the second subcarrier and the fourth subcarrier; and the index of the second subcarrier is consecutive to the index of the third subcarrier, or the index of the third subcarrier is consecutive to the index of the fourth subcarrier.

[0041] With reference to the first aspect or the second aspect, in a possible implementation, each of the M2 subcarrier groups includes a first subcarrier, a second subcarrier, a third subcarrier, and a fourth subcarrier, the second subcarrier is located between the first subcarrier and the third subcarrier, and the third subcarrier is located between the second subcarrier and the fourth subcarrier; and the index of the second subcarrier is consecutive to the index of the third subcarrier, or the index of the third subcarrier is consecutive to the index of the fourth subcarrier.

[0042] With reference to the first aspect or the second aspect, in a possible implementation, the target DRU includes 106 subcarriers, and the number of subcarriers between the first subcarrier group and the second subcarrier group is greater than or equal to 9.

[0043] With reference to the first aspect or the second aspect, in a possible implementation manner, the target DRU includes 106 subcarriers, and the number of subcarriers spaced between the first subcarrier group and the second subcarrier group is 10 or 12.

[0044] With reference to the first aspect or the second aspect, in a possible implementation manner, the target DRU is any one of the following: 106-tone DRU 1, 106-tone DRU 2, 106-tone DRU 3, 106-tone DRU 4, 106-tone DRU 5, 106-tone DRU 6, 106-tone DRU 7, 106-tone DRU 8; the 106-tone DRU 1 to the 106-tone DRU 8 satisfy at least one of the following: a difference between an index of the pth subcarrier in the 106-tone DRU 1 and an index of the pth subcarrier in the 106-tone DRU 2 is greater than or equal to 3; a difference between the index of the pth subcarrier in the 106-tone DRU 2 and the index of the pth subcarrier in the 106-tone DRU 3 is greater than or equal to 3; a difference between the index of the pth subcarrier in the 106-tone DRU 3 and the index of the pth subcarrier in the 106-tone DRU 4 is greater than or equal to 3; a difference between the index of the pth subcarrier in the 106-tone DRU 5 and the index of the pth subcarrier in the 106-tone DRU 6 is greater than or equal to 3; a difference between the index of the pth subcarrier in the 106-tone DRU 6 and the index of the pth subcarrier in the 106-tone DRU 7 is greater than or equal to 3; and a difference between the index of the pth subcarrier in the 106-tone DRU 7 and the index of the pth subcarrier in the 106-tone DRU 8 is greater than or equal to 3.

[0045] In the embodiments of the present application, there are at least two continuous subcarriers in the 106-tone DRU, which can simultaneously carry signals, so that the fitting error can be reduced when performing channel smoothing, the accuracy of channel estimation is improved, and the packet error rate is reduced. At the same time, for the 106-tone DRU, at most 2 subcarriers in any 13 continuous subcarriers can carry signals, so that the power amplification multiple of each subcarrier is 6.5 (i.e., 13 / 2 = 6.5), which reaches the maximum power amplification multiple that the 106-tone DRU can reach.

[0046] With reference to the first aspect or the second aspect, in a possible implementation manner, the subcarrier planning further includes a direct current region, and the direct current region is located between the first data pilot region and the second data pilot region.

[0047] In a third aspect, the embodiments of the present application provide a communication method, which can be applied to a first communication device, which can include a WLAN device (including a Wi-Fi device, etc.), or a chip or functional module or processing system arranged in the WLAN device, etc. The method comprises:

[0048] The first communication device generates an OFDM symbol; and the first communication device transmits the OFDM symbol on a target DRU; wherein the target DRU is distributed in a first data pilot region and a second data pilot region in a subcarrier plan; for the target DRU, the first data pilot region includes M1 subcarrier groups, and the second data pilot region includes M2 subcarrier groups, M1 and M2 are positive integers;

[0049] Each of the M1 subcarrier groups includes a first subcarrier and a second subcarrier, and two adjacent subcarrier groups in the M1 subcarrier groups include a first subcarrier group and a second subcarrier group; the first subcarrier group and the second subcarrier group satisfy at least one of the following conditions: a difference between an index of the first subcarrier in the first subcarrier group and an index of the first subcarrier in the second subcarrier group is greater than a third value; a difference between an index of the second subcarrier in the first subcarrier group and an index of the second subcarrier in the second subcarrier group is greater than the third value; or,

[0050] Each of the M2 subcarrier groups includes a first subcarrier and a second subcarrier, and two adjacent subcarrier groups in the M2 subcarrier groups include a first subcarrier group and a second subcarrier group; the first subcarrier group and the second subcarrier group satisfy at least one of the following conditions: a difference between an index of the first subcarrier in the first subcarrier group and an index of the first subcarrier in the second subcarrier group is greater than a third value; a difference between an index of the second subcarrier in the first subcarrier group and an index of the second subcarrier in the second subcarrier group is greater than the third value.

[0051] In the embodiments of the present application, for the 52-tone DRU, at most one of any 13 continuous subcarriers can carry a signal, so that the power amplification multiple of each subcarrier is 13, which reaches the maximum power amplification multiple that the 52-tone DRU can reach.

[0052] In a fourth aspect, the embodiments of the present application provide a communication method, which is applied to a second communication device, which can include a WLAN device (including a Wi-Fi device, etc.), or a chip or functional module or processing system arranged in the WLAN device, etc. The method comprises:

[0053] The second communication device receives the OFDM symbol on the target DRU; the second communication device parses the OFDM symbol; wherein the target DRU is distributed in a first data pilot region and a second data pilot region in a subcarrier plan; for the target DRU, the first data pilot region includes M1 subcarrier groups, and the second data pilot region includes M2 subcarrier groups, M1 and M2 are positive integers;

[0054] Each of the M1 subcarrier groups includes a first subcarrier and a second subcarrier, two adjacent subcarrier groups in the M1 subcarrier groups include a first subcarrier group and a second subcarrier group; the first subcarrier group and the second subcarrier group satisfy at least one of the following: a difference between an index of the first subcarrier in the first subcarrier group and an index of the first subcarrier in the second subcarrier group is greater than a third value; a difference between an index of the second subcarrier in the first subcarrier group and an index of the second subcarrier in the second subcarrier group is greater than the third value; or,

[0055] Each of the M2 subcarrier groups includes a first subcarrier and a second subcarrier, two adjacent subcarrier groups in the M2 subcarrier groups include a first subcarrier group and a second subcarrier group; the first subcarrier group and the second subcarrier group satisfy at least one of the following: a difference between an index of the first subcarrier in the first subcarrier group and an index of the first subcarrier in the second subcarrier group is greater than a third value; a difference between an index of the second subcarrier in the first subcarrier group and an index of the second subcarrier in the second subcarrier group is greater than the third value.

[0056] In the embodiments of the present application, the first subcarrier and the second subcarrier can be relative to the same subcarrier group.

[0057] In combination with the third aspect or the fourth aspect, in a possible implementation manner, the difference between the index of the first subcarrier and the index of the second subcarrier is greater than or equal to a fourth value.

[0058] In combination with the third aspect or the fourth aspect, in a possible implementation manner, the fourth value = 13.

[0059] In combination with the third aspect or the fourth aspect, in a possible implementation manner, the target DRU is any one of the following:

[0060] 52-tone DRU 1, 52-tone DRU 2, 52-tone DRU 3, 52-tone DRU 4, 52-tone DRU 5, 52-tone DRU 6, 52-tone DRU 7, 52-tone DRU 8, 52-tone DRU 9, 52-tone DRU 10, 52-tone DRU 11, 52-tone DRU 12, 52-tone DRU 13, 52-tone DRU 14, 52-tone DRU 15, 52-tone DRU 16.

[0061] In a possible implementation manner of the third aspect or the fourth aspect, the target DRU satisfies at least one of the following conditions:

[0062] a difference between an index of the pth subcarrier in the 52-tone DRU 1 and an index of the pth subcarrier in the 52-tone DRU 2 is greater than or equal to a second value; a difference between the index of the pth subcarrier in the 52-tone DRU 2 and an index of the pth subcarrier in the 52-tone DRU 3 is greater than or equal to the second value; a difference between the index of the pth subcarrier in the 52-tone DRU 3 and an index of the pth subcarrier in the 52-tone DRU 4 is greater than or equal to the second value; a difference between the index of the pth subcarrier in the 52-tone DRU 4 and an index of the pth subcarrier in the 52-tone DRU 5 is greater than or equal to the second value; a difference between the index of the pth subcarrier in the 52-tone DRU 5 and an index of the pth subcarrier in the 52-tone DRU 6 is greater than or equal to the second value; a difference between the index of the pth subcarrier in the 52-tone DRU 6 and an index of the pth subcarrier in the 52-tone DRU 7 is greater than or equal to the second value; a difference between the index of the pth subcarrier in the 52-tone DRU 7 and an index of the pth subcarrier in the 52-tone DRU 8 is greater than or equal to the second value.

[0063] In a possible implementation manner, in combination with the third aspect or the fourth aspect, a difference between an index of the p th subcarrier in the 52-tone DRU 9 and an index of the p th subcarrier in the 52-tone DRU 10 is greater than or equal to a second value; a difference between the index of the p th subcarrier in the 52-tone DRU 10 and an index of the p th subcarrier in the 52-tone DRU 11 is greater than or equal to the second value; a difference between the index of the p th subcarrier in the 52-tone DRU 11 and an index of the p th subcarrier in the 52-tone DRU 12 is greater than or equal to the second value; a difference between the index of the p th subcarrier in the 52-tone DRU 12 and an index of the p th subcarrier in the 52-tone DRU 13 is greater than or equal to the second value; a difference between the index of the p th subcarrier in the 52-tone DRU 13 and an index of the p th subcarrier in the 52-tone DRU 14 is greater than or equal to the second value; a difference between the index of the p th subcarrier in the 52-tone DRU 14 and an index of the p th subcarrier in the 52-tone DRU 15 is greater than or equal to the second value; and a difference between the index of the p th subcarrier in the 52-tone DRU 15 and an index of the p th subcarrier in the 52-tone DRU 16 is greater than or equal to the second value.

[0064] In a fifth aspect, an embodiment of the present application provides a communication apparatus, which is configured to execute the method in any of the first aspect to the fourth aspect or any possible implementation manner.

[0065] In a sixth aspect, an embodiment of the present application provides a communication apparatus, which comprises a processor configured to execute the method in any of the first aspect to the fourth aspect or any possible implementation manner.

[0066] In a possible implementation manner, the memory is located outside the communication apparatus.

[0067] In a possible implementation manner, the memory is located inside the communication apparatus.

[0068] In the embodiment of the present application, the processor and the memory can also be integrated into one device, that is, the processor and the memory can also be integrated together. For example, the communication apparatus can be a chip.

[0069] In a possible implementation manner, the communication apparatus further comprises a transceiver configured to receive or send information.

[0070] In a seventh aspect, an embodiment of the present application provides a communication apparatus, comprising a logic circuit and an interface, wherein the logic circuit and the interface are coupled; the interface is configured to input and / or output information, and the logic circuit is configured to execute the method in any one of the first aspect to the fourth aspect or any possible implementation manner thereof.

[0071] In an eighth aspect, an embodiment of the present application provides a computer readable storage medium, configured to store a computer program, when running on a computer, causes the method in any one of the first aspect to the fourth aspect or any possible implementation manner thereof to be executed.

[0072] In a ninth aspect, an embodiment of the present application provides a computer program product, when running on a computer, causes the method in any one of the first aspect to the fourth aspect or any possible implementation manner thereof to be executed.

[0073] In a tenth aspect, an embodiment of the present application provides a communication system, comprising a first communication apparatus configured to execute the method in the first aspect or any possible implementation manner thereof, and a second communication apparatus configured to execute the method in the second aspect or any possible implementation manner thereof.

[0074] In an eleventh aspect, an embodiment of the present application provides a communication system, comprising a first communication apparatus configured to execute the method in the third aspect or any possible implementation manner thereof, and a second communication apparatus configured to execute the method in the fourth aspect or any possible implementation manner thereof. BRIEF DESCRIPTION OF DRAWINGS

[0075] FIG. 1 is a schematic diagram of an architecture of a communication system according to an embodiment of the present application;

[0076] FIG. 2a is a schematic diagram of subcarrier distribution and RU distribution of 20MHz according to an embodiment of the present application;

[0077] FIG. 2b is a schematic diagram of subcarrier distribution and RU distribution of 40MHz according to an embodiment of the present application;

[0078] FIG. 2c is a schematic diagram of subcarrier distribution and RU distribution of 80MHz according to an embodiment of the present application;

[0079] FIG. 3a is a schematic diagram of a flow of uplink multi-user transmission according to an embodiment of the present application;

[0080] FIG. 3b is a schematic diagram of a frame format of EHT variant user information field according to an embodiment of the present application;

[0081] FIG. 4 is a flow diagram of a communication method according to an embodiment of the present application;

[0082] FIG. 5 is a diagram of an example of region division according to an embodiment of the present application;

[0083] FIG. 6a is a diagram of an example of 242-tone DRU allocation according to an embodiment of the present application;

[0084] FIG. 6b is a diagram of an example of 106-tone DRU allocation according to an embodiment of the present application;

[0085] FIG. 6c is a diagram of an example of 106-tone DRU allocation according to an embodiment of the present application;

[0086] FIG. 7 is a diagram of an example of a communication apparatus according to an embodiment of the present application;

[0087] FIG. 8 is a diagram of another example of a communication apparatus according to an embodiment of the present application;

[0088] FIG. 9 is a diagram of yet another example of a communication apparatus according to an embodiment of the present application. DETAILED DESCRIPTION

[0089] For the purpose of understanding the technical solutions of the present application, the present application will be further described below with reference to the accompanying drawings.

[0090] The terms "first" and "second" and the like in the description, claims, and drawings of the present application merely mean different objects and do not imply a particular order. Furthermore, the terms "include" and "have" and any variations thereof are intended to cover a non-exclusive inclusion. For example, a process, a method, a system, a product, or an apparatus, or the like, including a list of steps or units are not limited to the listed steps or units but can optionally further include steps or units not listed or other steps or units inherent to such processes, methods, products, or apparatuses.

[0091] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase that in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. Those skilled in the art will appreciate from the present description that embodiments described herein can be combined with other embodiments.

[0092] In the present application, "at least one" means one or more, "multiple" means two or more, "at least two" means two or three and more, and "and / or" is used to describe the association relationship of the associated objects, which means that there can be three relationships, for example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. "Or" means that there can be two relationships, such as only A exists, only B exists; when A and B are not mutually exclusive, it can also mean that there are three relationships, such as only A exists, only B exists, and A and B exist at the same time. The character " / " generally represents an "or" relationship between the associated objects before and after it. "At least one of the following" or similar expressions means any combination of these items. For example, at least one of a, b, or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c".

[0093] In the present application, "sending" and "receiving" represent the direction of signal transmission. For example, "sending information to XX" can be understood as the destination of the information being XX, which can include direct transmission through the air interface, or indirect transmission through the air interface by other units or modules. "Receiving information from YY" can be understood as the source of the information being YY, which can include direct reception from YY through the air interface, or indirect reception from YY through the air interface from other units or modules. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface. In other words, sending and receiving can be between devices, such as between network devices and terminal devices, or within a device, such as between components, modules, chips, software modules or hardware modules within a device through a bus, wire or interface.

[0094] The embodiments of the present application provide a communication method, device and system, which perfect the subcarrier planning corresponding to 80MHz, and each DRU under the subcarrier planning can achieve a large power amplification multiple.

[0095] The following introduces a system related to the embodiments of the present application.

[0096] The technical solutions provided in the embodiments of the present application can be applied to a wireless local area network (WLAN) system, such as Wi-Fi and the like. The technical solutions provided in the embodiments of the present application can be applicable to the Institute of Electrical and Electronics Engineers (IEEE) 802.11 series of protocols (or standards), for example, the 802.11be protocol, the 802.11bn protocol (or Wi-Fi 8, also referred to as ultra high reliability (UHR) or ultra high reliability and throughput (UHRT), etc.), or a next-generation protocol of the 802.11bn protocol or a protocol supporting ambient power (AMP), and the like, which are not listed one by one. The technical solutions provided in the embodiments of the present application can also be applied to a wireless personal area network (WPAN) based on integrated millimeter wave (IMMW) and ultra wideband (UWB) technology, and the like. The technical solutions provided in the embodiments of the present application can be applicable to the IEEE 802.15 series of protocols, for example, the 802.15.4a protocol, the 802.15.4z protocol or the 802.15.4ab protocol, or a future generation UWB WPAN protocol, and the like, which are not listed one by one. The technical solutions provided in the embodiments of the present application can also be applied to a spark link or nearlink standard protocol. The technical solutions provided in the embodiments of the present application can also be applied to a communication system, for example, can be an internet of things (IoT) system, a vehicle-to-everything (V2X) system (X can represent any thing), a device-to-device (D2D) system, a narrow band IoT (NB-IoT) system, a long term evolution (LTE) system, a 5th-generation (5G) communication system, and a new communication system to be generated in future communication development, and the like. For example, the V2X can include vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P) or vehicle-to-network (V2N) communication, and the like.

[0097] The WLAN system can provide high-rate and low-latency transmission. As the WLAN application scenarios continue to evolve, the WLAN system will be applied to more scenarios or industries, such as the Internet of Things industry, the Internet of Vehicles industry, or the banking industry, enterprise offices, sports venues, exhibition halls, concert halls, hotel rooms, dormitories, hospital rooms, classrooms, supermarkets, squares, streets, production workshops, and warehouses. Of course, the device (such as an access point or a station) supporting WLAN communication or sensing can be a sensor node in a smart city (such as a smart water meter, a smart electricity meter, a smart air detection node), a smart device in a smart home (such as a smart camera, a projector, a display screen, a television, a sound system, a refrigerator, a washing machine, etc.), a node in the Internet of Things, an entertainment terminal (such as an augmented reality (AR) device, a virtual reality (VR) device, etc.), a smart device in a smart office (such as a printer, a projector, a loudspeaker, a sound system, etc.), a vehicle-to-vehicle device in the Internet of Vehicles, infrastructure in daily life scenarios (such as a vending machine, a self-service navigation station in a supermarket, a self-service checkout device, a self-service ordering machine, etc.), and a device in a large sports or music venue, etc.

[0098] Although the embodiments of the present application mainly take WLAN as an example, especially the network applying to the IEEE 802.11 series standards. The various aspects involved in the embodiments of the present application can be extended to other networks adopting various standards or protocols. For example, Bluetooth, high performance radio LAN (HIPERLAN) (a wireless standard similar to the IEEE 802.11 standard), and a wide area network (WAN) or other now known or later developed networks.

[0099] In a possible implementation, the method provided by the embodiments of the present application can be implemented by a communication device in a communication system. For example, the communication device can be an access point (AP) or a station (STA).

[0100] The AP is a device with wireless communication function, which supports communication or sensing or energy transmission by using WLAN protocol, has the function of communication or sensing with other devices (such as non-AP STA or other access points) in the WLAN network or energy transmission, and of course, can also have the function of communication or sensing or energy transmission with other devices. Alternatively, the access point is equivalent to a bridge connecting wired and wireless networks, and the main function is to connect various wireless network clients together and then access the wireless network to the Ethernet. In the WLAN system, the access point can be referred to as an access point station (AP STA). The device with wireless communication function can be a whole device, or a chip, processing system or functional module installed in the whole device, and the device installed with the chip or processing system or functional module can realize the method and function of the embodiments of the application under the control of the chip or processing system or functional module. The AP in the embodiments of the application is a device providing services for non-AP STA, which can support 802.11 series protocol or subsequent protocol, etc. For example, the access point can be an access point for terminals (such as mobile phones) to enter wired (or wireless) networks, mainly deployed in homes, buildings and parks, with a typical coverage radius of tens of meters to hundreds of meters, and of course, can also be deployed outdoors. For another example, the AP can be a communication server, a router, a switch, a network bridge and the like. The AP can include various forms of macro base stations, micro base stations, relay stations and the like. Of course, the AP can also be a chip or processing system or module in the above various forms of devices, so as to realize the method and function of the embodiments of the application.

[0101] The STA is a device with wireless communication function, which supports communication or sensing or energy transmission using WLAN protocol, and has the ability to communicate or sense or energy transmission with other non-AP STAs or access points in the WLAN network. In the WLAN system, the station can be referred to as a non-access point station (non-AP STA). For example, the STA is any user communication device that allows a user to communicate or sense or energy transmission with an AP and then communicate with a WLAN. The device with wireless communication function can be a complete device, or a chip or processing system or functional module installed in the complete device. The device installed with the chip or processing system or functional module can realize the method and function of the embodiments of the present application under the control of the chip or processing system or functional module. For example, the STA can be a wireless communication chip, a wireless sensor or a wireless communication terminal, and can also be referred to as a user. For another example, the STA can be a mobile phone supporting Wi-Fi communication function, a tablet computer supporting Wi-Fi communication function, a set-top box supporting Wi-Fi communication function, a smart television supporting Wi-Fi communication function, a smart wearable device supporting Wi-Fi communication function, a vehicle-mounted communication device supporting Wi-Fi communication function, and a computer supporting Wi-Fi communication function. Of course, the STA can also be a chip or processing system or module in the above various forms of devices, thereby realizing the method and function of the embodiments of the present application.

[0102] For example, the communication system to which the method provided by the embodiments of the present application can be applied can include an access point and a station. For example, the embodiments of the present application can be applied to the scenario of communication or sensing between an AP and a STA, between an AP and an AP, or between a STA and a STA in a WLAN, which is not limited by the embodiments of the present application. Optionally, the AP can communicate or sense with a single STA, or the AP can simultaneously communicate or sense with multiple STAs. Specifically, the communication or sensing between the AP and the multiple STAs can be divided into downlink transmission in which the AP simultaneously sends signals to multiple STAs, and uplink transmission in which multiple STAs send signals to the AP. The communication or sensing between the AP and the STA, between the AP and the AP, and between the STA and the STA can support a WLAN communication protocol, which can include IEEE 802.11 series of protocols, such as 802.11bn protocol, and of course also applies to protocols after 802.11bn.

[0103] FIG. 1 is a schematic diagram of an architecture of a communication system according to an embodiment of the present application. The communication system can include one or more APs and one or more STAs. Two access points, e.g., AP1 and AP2, and three stations, e.g., STA1, STA2 and STA3, are shown in FIG. 1. As an example, the method provided by the embodiments of the present application can be applied to data communication or sensing or energy transfer between an AP and one or more STAs, e.g., the communication or sensing between AP1 and STA1 shown in FIG. 1, or the communication or sensing between AP1 and STA1 and STA2 shown in FIG. 1. As another example, the method provided by the embodiments of the present application can be applied to communication between APs, e.g., the communication or sensing between AP1 and AP2 shown in FIG. 1. As yet another example, the method provided by the embodiments of the present application can be applied to communication or sensing between STAs, e.g., the communication or sensing between STA2 and STA3 shown in FIG. 1.

[0104] The STA is a mobile phone and the AP is a router in FIG. 1 as an example, which does not limit the types of AP and STA in the embodiments of the present application. Meanwhile, the number of APs and STAs shown in FIG. 1 is only an example, and the number of APs or STAs can be more or less in specific implementation, which is not limited in the embodiments of the present application.

[0105] From different perspectives of transmitting and receiving OFDM symbols, the first communication device shown below can be understood as a communication device for transmitting OFDM symbols, and the second communication device can be understood as a communication device for receiving OFDM symbols. Alternatively, the first communication device can also be referred to as a transmitting end, and the second communication device can also be referred to as a receiving end.

[0106] From the perspective of different devices, as an example, the first communication device and the second communication device can be Wi-Fi chips or functional modules or processing systems, etc. arranged in different Wi-Fi devices. As another example, the first communication device can be an AP (i.e. an AP STA), and the second communication device can be a non-AP STA. As yet another example, the first communication device and the second communication device can both be non-AP STAs or both be APs. As yet another example, the first communication device can be a non-AP STA, and the second communication device can be an AP. As yet another example, at least one of the first communication device and the second communication device can be a multi-link device (MLD), etc. The embodiments of the present application will not be listed one by one. For example, the MLD refers to a device that has multiple stations (such as APs or non-AP STAs) working on different frequency bands or channels at the same time. The multi-link device includes multiple affiliated stations, which can be physical stations or logical stations, and each station can work on a link or a frequency band or a channel, etc. The above-mentioned affiliated stations can be APs or non-AP STAs. The multi-link device (such as a non-AP MLD or an AP MLD) can be a communication device with wireless communication function. The communication device can be a whole machine device, or a chip or processing system or module installed in the whole machine device, etc. The device installed with the chip or processing system or module can realize the method and function of the embodiments of the present application under the control of the chip or processing system or module. The multi-link device can realize wireless communication by complying with the 802.11 series protocol, so as to realize communication with other devices. The other devices shown here can be multi-link devices or not. The frequency bands in which the multi-link device works can include but are not limited to sub 1GHz, 2.4GHz, 5GHz, 6GHz, etc. which will not be listed one by one here. The product forms of the above-mentioned first communication device and second communication device are only examples, and should not be understood as a limitation of the embodiments of the present application.

[0107] The embodiments of the present application describe the method provided by the embodiments of the present application from the perspective of the first communication device and the second communication device, but the first communication device and the second communication device can also forward the signal through other devices in the process of transmitting the signal, such as forwarding the signal between the first communication device and the second communication device through a forwarding device, and the embodiments of the present application do not limit other devices other than the first communication device and the second communication device.

[0108] The following introduces the terms or names related to the embodiments of the present application.

[0109] 1. Resource unit (RU) based tone plan

[0110] As an example, when the bandwidth is 20MHz, the whole bandwidth (i.e., 20MHz) can be composed of one whole 242-tone RU, or various combinations of 26-tone RU, 52-tone RU, 106-tone RU.

[0111] Fig. 2a is a schematic diagram of subcarrier distribution and RU distribution of 20MHz according to an embodiment of the present application. As shown in Fig. 2a, 20MHz can include 9 26-tone RUs, or 4 52-tone RUs, or 2 106-tone RUs, or 1 242-tone.

[0112] A 26-tone RU is an RU including 26 subcarriers, a 52-tone RU is an RU including 52 subcarriers, a 106-tone RU is an RU including 106 subcarriers, and a 242-tone RU is an RU including 242 subcarriers, and so on. Each RU can include data subcarriers and pilot subcarriers. The data subcarriers can be used to carry data information, and the pilot subcarriers can be used for phase offset and / or frequency offset estimation, etc. In addition to the RUs, the above-mentioned 20MHz bandwidth can further include at least one of the following: one or more guard subcarriers, one or more null subcarriers, and one or more direct current (DC) subcarriers. The subcarrier range included in each RU can refer to relevant standards or protocols, which will not be described in detail herein. The description of RU or subcarrier herein is also applicable to other bandwidths shown below, which will not be described in detail herein. The description of subcarrier herein is also applicable to the description of DRU below, which will not be described in detail herein.

[0113] As another example, when the bandwidth is 40MHz, the whole bandwidth (i.e., 40MHz) can be composed of one whole 484-tone RU, or various combinations of 26-tone RU, 52-tone RU, 106-tone RU, 242-tone RU. The whole bandwidth is approximately equivalent to a copy of the subcarrier planning of 20MHz.

[0114] Fig. 2b is a schematic diagram of subcarrier distribution and RU distribution of 40MHz according to an embodiment of the present application. As shown in Fig. 2b, 40MHz can include 18 26-tone RUs, or 8 52-tone RUs, or 4 106-tone RUs, or 2 242-tone RUs, or 1 484-tone RU.

[0115] As yet another example, when the bandwidth is 80MHz, the entire bandwidth (i.e., 80MHz) can be composed of one entire 996-tone RU, or various combinations of 26-tone RUs, 52-tone RUs, 106-tone RUs, 242-tone RUs, and 484-tone RUs.

[0116] FIG. 2c is a schematic diagram of subcarrier distribution and RU distribution of 80MHz according to an embodiment of the present application. As shown in FIG. 2c, 80MHz can include 36 26-tone RUs, or 16 52-tone RUs, or 8 106-tone RUs, or 4 242-tone RUs, or 2 484-tone RUs, or 1 996-tone RU. Wherein 484L and 484R represent the left half and the right half of a 484-tone RU, respectively, and each include 242 subcarriers, which is another representation of 484+5DC. For example, taking the subcarrier range of a 484-tone RU as [-500:-12], "484L" is the low frequency part relative to the frequency center of the 484-tone RU, i.e., [-500:-259], and "484R" is the high frequency part relative to the frequency center of the 484-tone RU, i.e., [-253:-12]. Similarly, for example, taking the subcarrier range of a 484-tone RU as [12:500], "484L" is [12:253], and "484R" is [259:500]. The above is not listed one by one.

[0117] In the present application, [a:b] can refer to all integers from a to b (a and b are also integers), i.e., a, (a+1), (a+2), (a+3), …, b; the following will not be repeated. For example, [259:500] represents 259, 260, 261, 262, …, 498, 499, 500. For another example, [-500:-259] represents -500, -499, -498, -497, …, -260, -259. The above description of [a:b] also applies hereinafter.

[0118] As another example, when the bandwidth is 160MHz, the entire bandwidth can be seen as two 80MHz subcarrier distributions of copies, such as the entire bandwidth can be composed of a whole 2*996-tone RU, or can be composed of various combinations of 26-tone RU, 52-tone RU, 106-tone RU, 242-tone RU, 484-tone RU, 996-tone RU. When the bandwidth is 320MHz, the entire bandwidth can be seen as four 80MHz subcarrier distributions of copies. Here, it is not listed one by one.

[0119] In the above various subcarrier plans, in the unit of 242-tone RU (i.e. 20MHz), the leftmost of FIGS. 2a-2c can be the lowest frequency, and the rightmost of FIGS. 2a-2c can be the highest frequency. From left to right, the 242-tone RUs can be labeled as 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 10th, 11th, 12th, 13th, 14th, 15th, and 16th. nd th Taking a bandwidth of 320MHz as an example, the data field in the wireless frame can occupy up to 16 242-tone RUs, that is, in the data field, up to 16 242-tone RUs can be one-to-one corresponding to 16 20MHz channels in frequency from low to high.

[0120] Generally, one STA can be allowed to be allocated multiple RUs, that is, multiple RUs can be allocated to one STA in combination, and therefore the 802.11be standard supports multiple resource units (MRU). In other words, in addition to the above-mentioned several RUs, the 802.11be standard also includes some MRUs. For example, one 52-tone RU and one 26-tone RU form a 52+26-tone MRU. For another example, one 106-tone RU and one 26-tone RU form a 106+26-tone MRU. For another example, one 996-tone RU and one 484-tone RU form a 996+484-tone MRU. For another example, two 996-tone RUs and one 484-tone RU form a 2*996+484-tone MRU. For another example, three 996-tone RUs form a 3*996-tone MRU. For another example, three 996-tone RUs and one 484-tone RU form a 3*996+484-tone MRU. The symbol “*” in this application represents “multiply” or “times”.

[0121] ​At the bandwidth level, when the subcarrier spacing is 78.125 KHz, a 26-tone RU can approximately correspond to 2 MHz (i.e., 26*78.125 KHz = 2031.25 KHz ≈ 2 MHz), a 52-tone RU approximately corresponds to 4 MHz, a 106-tone RU approximately corresponds to 8 MHz, and a 242-tone RU approximately corresponds to 20 MHz. Other RU sizes can be similarly scaled by addition or multiplication, and the present application will not be repeated here.

[0122] The above RU can be referred to as a regular RU (rRU). Such a regular RU has a smaller bandwidth and lower transmission power than a distributed RU. The "lower" shown here is relative to the distributed RU, and the transmission power of the distributed RU can be further increased relative to the regular RU.

[0123] 2. Uplink multi-user transmission

[0124] Uplink multi-user transmission is an important technology.

[0125] FIG. 3a is a flow diagram of uplink multi-user transmission according to an embodiment of the present application. As shown in FIG. 3a, the flow of uplink multi-user transmission can include: an AP sending a trigger frame for triggering uplink multi-user transmission, the trigger frame carrying identifier information of one or more stations and resource allocation information; each station, after receiving the trigger frame, sending an uplink data frame on the allocated resource unit (RU) using a trigger-based physical layer protocol data unit (TB PPDU), and receiving a block acknowledgement (BA) frame sent by the AP after a short inter-frame space (SIFS).

[0126] In one possible implementation, the trigger frame can include, but is not limited to, a common information field and a user information list field. The common information field can contain common information that all STAs scheduled by the trigger frame need to read. In 802.11be, the user information list field of the trigger frame can include, but is not limited to, one or more EHT variant user information fields (EHT variant User Info field). One EHT variant user information field can contain information that an EHT STA needs to read.

[0127] FIG. 3b is a frame format diagram of an EHT variant user info field according to an embodiment of the present application. As shown in FIG. 3b, the EHT variant user info field includes, but is not limited to, a resource unit allocation subfield (RU Allocation subfield) and a primary-secondary 160 subfield (PS 160 subfield).

[0128] Generally, the RU or MRU allocated by a STA can be indicated by the resource unit allocation subfield (RU Allocation subfield), the primary-secondary 160 subfield (PS 160 subfield), the uplink bandwidth subfield (UL BW subfield) in the common info field, or the uplink bandwidth extension subfield (UL BW extension subfield) in the special user info field. In the common info field, B55 indicates whether there is a special user info field in the user info field. For an EHT TB PPDU, the bandwidth is jointly determined by the UL BW subfield and the UL BW extension subfield in the special user info field.

[0129] The B0 bit in the RU allocation subfield, the B7 to B1 bits in the RU allocation subfield, the PS 160 subfield, and the mapping relationship between the RU and the MRU are shown in Table 1 below. The bandwidth is jointly determined by the UL BW subfield and the UL BW extension subfield. Table 1 shows the interpretation of the RU allocation subfield and the PS 160 subfield in the 802.11be trigger frame.

[0130] Table 1

[0131] In one possible implementation, N in Table 1 above can be obtained by the formula N = 2 * X1 + X0. The values of X1 and X0 can be seen from Table 2 below, which shows a lookup table for X1 and N.

[0132] Table 2

[0133] P80 in Table 2 above represents a primary 80 MHz channel, S80 represents a secondary 80 MHz channel, and S160 represents a secondary 160 MHz channel.

[0134] In the above table 2, the configuration refers to the order of P80, S80 and S160 in absolute frequency, from left to right, indicating from low frequency to high frequency. For example, [P80 S80] indicates that the primary 80MHz channel is the first 80MHz channel from low to high frequency, and the secondary 80MHz channel is the second 80MHz channel from low to high frequency; or in other words, [P80 S80] indicates that the primary 80MHz channel is the low 80MHz channel, and the secondary 80MHz channel is the high 80MHz channel. For another example, [S80 P80 S160] indicates that the secondary 80MHz channel is the low 80MHz channel in the low 160MHz channel, the primary 80MHz channel is the high 80MHz channel in the low 160MHz channel, and the secondary 160MHz channel is the high 160MHz channel.

[0135] 3. Distributed resource unit

[0136] Recently, the communication committee has promulgated regulations on the 6GHz spectrum, which defines a low power indoor (LPI) communication method in the room, and strictly limits the maximum power and maximum frequency spectrum density of transmission. For example, for a station (STA), the maximum power is 24dBm, and the maximum power spectrum density is -1dBm / MHz. The transmission power of the device is limited by both the maximum power and the maximum power spectrum density. First, the transmission power cannot exceed the maximum power value, and the power spectrum density of the transmission cannot exceed the maximum power spectrum density. Compared with the maximum power, the maximum power spectrum density is more stringent, and the maximum power allowed for transmission is usually more limited by the power spectrum density. For a station, when the bandwidth is the maximum 320MHz, it reaches the limit of the maximum power specified by the regulation. Below this bandwidth, it can only transmit lower power due to the maximum power spectrum density limit. On June 30, 2021, Europe also issued regulations on the 6GHz spectrum, targeting LPI communication methods, such as a maximum power of 23dBm and a maximum power spectrum density of 10dBm / MHz. When the bandwidth does not exceed 20MHz, the transmission power of the AP / STA is mainly limited by the power spectrum density, and when the bandwidth is greater than 20MHz, the transmission power of the AP / STA is mainly limited by the maximum power.

[0137] Due to the power spectral density limitation, the limited number of subcarriers (such as 26-tone RU) can be discretely distributed on a wider bandwidth, i.e. more subcarriers (such as odd subcarriers of 2 26-tone RUs), to obtain the transmission power improvement, i.e. discrete RU, or distributed RU. It is commonly used in uplink multi-user transmission, and the transmission power of each user is improved under the condition of a certain bandwidth by interleaving the transmission of discrete RUs by multiple users. It should be noted that the maximum power spectral density is limited in the form that the transmission power of 1 MHz does not exceed x mw, and considering the 78.125 kHz carrier spacing, 1 MHz contains 12.8 (about 13) subcarriers. Since the average power of each subcarrier is the same during transmission. Observing any 13 consecutive subcarriers, the maximum number of subcarriers carrying signals will determine the average power of each subcarrier, and in turn determine the transmission power of the signal. For example, under 20M bandwidth (total of 242 subcarriers), among all the 13 consecutive subcarriers, the maximum number of subcarriers carrying signals is 5, then the average power of each subcarrier will be x (mw) / 5. Considering that the total number of subcarriers carrying signals is 26, the total transmission power will be x (mw) / 5*26.

[0138] The DRU in the present application includes a plurality of subcarriers discretely distributed in the frequency domain, or a plurality of subcarriers with discrete indexes, or a plurality of subcarriers with non-continuous indexes. The plurality of subcarriers can be partially discrete or completely discrete. For example, the plurality of subcarriers can include a part of subcarriers that are continuous in frequency and a part of subcarriers that are not continuous in frequency. For another example, the plurality of subcarriers can be completely not continuous in frequency. The "continuous in frequency" mentioned above can also be referred to as the indexes of the subcarriers being continuous, and the "not continuous in frequency" can also be referred to as the indexes of the subcarriers being not continuous. The "distributed RU" and "DRU" or "discrete RU" can be used interchangeably in the present application. It should also be understood that the DRU mentioned in the present application refers to the RU with subcarriers discretely distributed in the frequency domain, that is, the RU with this characteristic is referred to as distributed RU or discrete RU in the present application, but the RU with this characteristic can also have other names in practice, which are not limited in the present application.

[0139] The continuous RU in the present application refers to the RU composed of a plurality of continuous subcarriers, or the RU composed of two groups of continuous subcarrier groups, each group of continuous subcarrier groups including a plurality of continuous subcarriers, and the two groups of continuous subcarrier groups being separated by guard subcarriers, null subcarriers, or direct current subcarriers. Of course, the continuous RU can also have other names, such as regular RU (rRU). The "continuous RU" and "regular RU" can be used interchangeably, and the name of the continuous RU is not limited in the present application.

[0140] The method provided by the embodiment of the present application is described below.

[0141] FIG. 4 is a flow diagram of a communication method provided by the embodiment of the present application. The first communication device and the second communication device involved in FIG. 4 are described above, and will not be described in detail here. As shown in FIG. 4, the method includes the following steps.

[0142] 401. The first communication device generates an OFDM symbol.

[0143] The specific steps of generating the OFDM symbol can refer to the relevant standards or protocols, and will not be described in detail in the present application.

[0144] 402. The first communication device transmits the OFDM symbol on a target DRU.

[0145] Correspondingly, the second communication device receives the OFDM symbol on the target DRU.

[0146] The way in which the first communication device or the second communication device learns the target DRU is not limited in the embodiment of the present application.

[0147] 403. The second communication device parses the OFDM symbol.

[0148] The target DRU is a DRU used for transmitting the OFDM symbol. The first communication device maps the OFDM symbol on the subcarriers in the target DRU according to the size of the target DRU and the position of the target DRU. For example, the first communication device can transmit the OFDM symbol according to the first bandwidth, the size of the target DRU and the position of the target DRU, and the target DRU can be located in the first bandwidth. Correspondingly, the second communication device can receive the OFDM symbol according to the first bandwidth, the size of the target DRU and the position of the target DRU.

[0149] The target DRU will be described below.

[0150] In the embodiment of the present application, the subcarrier planning corresponding to the first bandwidth is designed in detail. Each DRU under the subcarrier planning can achieve a large power amplification factor, thereby improving the transmission power of the communication device. Further, the target DRU can include continuous subcarriers carrying signals at the same time, thereby reducing the fitting error of channel smoothing, improving the accuracy of channel estimation, and reducing the packet error rate.

[0151] The target DRU and the subcarrier planning involved in the embodiment of the present application are described below.

[0152] As a possible implementation, the target DRU can include 484 subcarriers. The 484 subcarriers can include at least one of data subcarriers or pilot subcarriers. The target DRU can also be referred to as a 484-tone DRU, i.e., the 484-tone DRU represents a DRU including 484 subcarriers. The description of the 484-tone DRU can refer to the following implementation one.

[0153] As another possible implementation, the target DRU can include 242 subcarriers. The 242 subcarriers can include at least one of data subcarriers or pilot subcarriers. The target DRU can also be referred to as a 242-tone DRU, i.e., the 242-tone DRU represents a DRU including 242 subcarriers. The description of the 242-tone DRU can refer to the following implementation two.

[0154] As yet another possible implementation, the target DRU can include 106 subcarriers. The 106 subcarriers can include at least one of data subcarriers or pilot subcarriers. The target DRU can also be referred to as a 106-tone DRU, i.e., the 106-tone DRU represents a DRU including 106 subcarriers. The description of the 106-tone DRU can refer to the following implementation three.

[0155] As yet another possible implementation, the target DRU can include 52 subcarriers. The 52 subcarriers can include at least one of data subcarriers or pilot subcarriers. The target DRU can also be referred to as a 52-tone DRU, i.e., the 52-tone DRU represents a DRU including 52 subcarriers. The description of the 52-tone DRU can refer to the following implementation four.

[0156] As yet another possible implementation, the target DRU can include 26 subcarriers. The 26 subcarriers can include at least one of data subcarriers or pilot subcarriers. The target DRU can also be referred to as a 26-tone DRU, i.e., the 26-tone DRU represents a DRU including 26 subcarriers. The description of the 26-tone DRU can refer to the following implementation five.

[0157] Of course, the target DRU shown in the embodiments of the present application can also include 996 subcarriers, i.e., the target DRU can also be referred to as a 996-tone DRU. For the size of the target DRU, it is not enumerated one by one here.

[0158] The DRUs of different sizes can have the following relationship:

[0159] One 484-tone DRU can include two 242-tone DRUs (i.e., 242*2=484).

[0160] One 242-tone DRU can include one 26-tone DRU (i.e., 106*2+26<242).

[0161] One 106-tone DRU can include two 52-tone DRUs (52*2<106).

[0162] One 52-tone DRU can include two 26-tone DRUs (26*2=52).

[0163] The relationship between other size DRUs and 484-tone DRUs is not listed here.

[0164] The subcarrier plan corresponding to the first bandwidth can include 2 484-tone DRUs, 4 242-tone DRUs, 8 106-tone DRUs, 16 52-tone DRUs, and 36 26-tone DRUs. Here, the first bandwidth is taken as an example of 80 MHz, and the subcarrier plan for the first bandwidth of 160 MHz or 320 MHz is not listed here. The following examples are described with the first bandwidth of 80 MHz, but the division of each DRU shown below can be extended to other bandwidths, which is not limited in the present application.

[0165] Generally, the index range of the subcarriers can be used to represent the position of the subcarriers in the frequency domain in the subcarrier plan corresponding to the first bandwidth. For the index range, the middle index can be 0, the right side of 0 can be +1, and the left side of 0 can be -1. The number of subcarriers included on the left side of 0 (which can also be understood as the index range) and the number of subcarriers included on the right side of 0 can be determined by the total number of subcarriers. When the total number of subcarriers is an odd number greater than 1, the number of subcarriers included on the left side of 0 and the number of subcarriers included on the right side of 0 can be the same. When the total number of subcarriers is an even number greater than 2, the number of subcarriers included on the left side of 0 and the number of subcarriers included on the right side of 0 will be different. Generally, the number of subcarriers included on the right side of 0 can be less than the number of subcarriers included on the left side of 0. However, the present application is not limited thereto.

[0166] The index range involved in the subcarrier planning corresponding to the first bandwidth can be determined according to the first bandwidth and the subcarrier spacing. Taking the subcarrier spacing of 78.125 KHz as an example, there can be 1024 (i.e., 80MHz / 78.125KHz = 1024) subcarriers for 80MHz. Taking the number of subcarriers included on the left of 0 to be greater than the number of subcarriers included on the right of 0 as an example, the index range of the 1024 subcarriers can be [-512:511]. Or, in terms of frequency from low to high, the indexes of the 1024 subcarriers can be [-512:511]. Of course, as the standard evolves, the subcarrier spacing can also change, and when the subcarrier spacing changes, the number of subcarriers and the subcarrier indexes of each DRU in this application can also change accordingly. Regardless of how the subcarrier spacing changes, as long as the determination method of the indexes of each DRU or the characteristics met by each DRU are the same as below, they are within the protection scope of the embodiments of this application.

[0167] First, the characteristics met by the 484-tone DRU, the 242-tone DRU, the 106-tone DRU, the 52-tone DRU, and the 26-tone DRU are introduced, and then the subcarrier planning corresponding to the first bandwidth is described in combination with each DRU.

[0168] Implementation manner one,

[0169] The 484-tone DRU can be distributed in the first data pilot region and the second data pilot region in the subcarrier planning. The first data pilot region and the second data pilot region can be described with reference to the description of the subcarrier planning shown below.

[0170] For the 484-tone DRU, it can include M1 subcarrier groups in the first data pilot region, and M2 subcarrier groups in the second data pilot region. Optionally, the second data pilot region can also include N single subcarriers. M1, M2, and N are positive integers. The relationship between M1, M2, and N can satisfy: M1*(the number of subcarriers in each of the M1 subcarrier groups) + M2*(the number of subcarriers in each of the M2 subcarrier groups) + N = 484.

[0171] The 484-tone DRU can meet at least one of the following:

[0172] (1) The two adjacent subcarrier groups in the M1 subcarrier groups can include a first subcarrier group and a second subcarrier group. The first subcarrier group can include at least two subcarriers with consecutive indexes. The second subcarrier group can include at least two subcarriers with consecutive indexes.

[0173] The two adjacent subcarrier groups in the M1 subcarrier groups can include a first subcarrier group and a second subcarrier group. The first subcarrier group can include at least two subcarriers with consecutive indexes. The second subcarrier group can include at least two subcarriers with consecutive indexes.

[0174] The two adjacent subcarrier groups in the M1 subcarrier groups can include a first subcarrier group and a second subcarrier group. The first subcarrier group can include at least two subcarriers with consecutive indexes. The second subcarrier group can include at least two subcarriers with consecutive indexes.

[0175] For example, the first subcarrier group includes three subcarriers with consecutive indexes (such as 3 or 6, etc.), and the second subcarrier group includes three subcarriers with consecutive indexes (such as 3 or 6, etc.). That is, the indexes of the three subcarriers in the first subcarrier group are consecutive, and the indexes of the three subcarriers in the second subcarrier group are consecutive. Each of the M subcarrier groups can include three subcarriers with consecutive indexes (which can also be referred to as three consecutive subcarriers or consecutive three subcarriers, etc.), such as a first subcarrier, a second subcarrier, and a third subcarrier. The second subcarrier is between the first subcarrier and the third subcarrier. The number of subcarriers included in each subcarrier group can be the same or different, and the embodiments of the present application are not limited thereto. The embodiments of the present application are described by taking the number of subcarriers included in each subcarrier group as an example.

[0176] In the case where each subcarrier group includes three subcarriers with consecutive indexes, for a 484-tone DRU, M1 can be equal to 83, M2 can be equal to 77, and N can be equal to 4. That is, 3*(83+77)+4=484. Of course, the sum of M1+M2 can also be less than 160, such as the sum of M1+M2 being equal to 159, N=7. Or, the sum of M1+M2 is equal to 158, N=10, etc., which will not be listed here.

[0177] (2) The indexes of the two adjacent subcarrier groups in the M1 subcarrier groups are not consecutive, and the indexes of the two adjacent subcarrier groups in the M2 subcarrier groups are not consecutive.

[0178] That is, the index of the subcarrier with the largest index in the first subcarrier group is not consecutive with the index of the subcarrier with the smallest index in the second subcarrier group.

[0179] For example, the subcarrier indexes in the first subcarrier group are -500, -499, -498 in turn, and the subcarrier indexes in the second subcarrier group are -494, -493, -492 in turn. The first subcarrier group and the second subcarrier group shown here are only examples, and should not be construed as limiting the embodiments of the present application.

[0180] For (1) and (2), any two adjacent subcarrier groups in the M1 subcarrier groups can satisfy the above characteristics. Similarly, any two adjacent subcarrier groups in the M2 subcarrier groups can satisfy the above characteristics.

[0181] For the sake of description or understanding, the embodiments of the present application refer to a plurality of subcarriers satisfying certain conditions as a subcarrier group, where the certain conditions can include consecutive indexes. However, the division of the subcarrier group is a logical concept, i.e., for the sake of description or understanding, the embodiments of the present application divide a plurality of subcarriers satisfying certain conditions into a subcarrier group in a logical manner. However, in a specific implementation, the division of the subcarrier group can not be performed. In this case, as long as the target DRU satisfies the characteristics shown in the embodiments of the present application, it is within the protection scope of the present application. The description of the subcarrier group here is also applicable to each implementation mode shown below, and will not be described again below.

[0182] When the plurality of subcarriers with non-consecutive indexes are not divided into groups, the 484-tone DRU can have the following description: the 484-tone DRU is distributed in a first data pilot region and a second data pilot region in a subcarrier plan, the indexes of every J1 subcarriers in the first data pilot region are consecutive, and the indexes of adjacent J1 subcarriers are non-consecutive (for example, in adjacent 2*J1 subcarriers, the index of the subcarrier with the largest index in the former J1 subcarriers is non-consecutive to the index of the subcarrier with the smallest index in the latter J1 subcarriers); and the indexes of every J1 subcarriers in the second data pilot region are consecutive, and the indexes of adjacent J1 subcarriers are non-consecutive. The above J1 can be equal to 3, or J1 can also be equal to 6.

[0183] (3) There are 2 single subcarriers with consecutive indexes in the N single subcarriers.

[0184] As an example, N=4, and there can be 2 single subcarriers with consecutive indexes in the 4 single subcarriers. For example, the indexes of 2 subcarriers in the 4 single subcarriers are consecutive, and the indexes of the remaining 2 subcarriers in the 4 single subcarriers are consecutive.

[0185] As another example, N is greater than 4, such as N=7 or N=10, and there can be 2 single subcarriers with consecutive indexes in the N single subcarriers, or there can be 3 single subcarriers with consecutive indexes.

[0186] (4) The number of subcarriers between the first subcarrier group and the second subcarrier group can be equal to a first value. For example, when each subcarrier group includes 3 subcarriers, the first value can be equal to 3. For another example, when each subcarrier group includes 6 subcarriers, the first value can be equal to 6.

[0187] The number of subcarriers between the first subcarrier group and the second subcarrier group can be understood as the number of subcarriers between the subcarrier with the largest index in the first subcarrier group and the subcarrier with the smallest index in the second subcarrier group.

[0188] For example, the subcarrier indexes in the first subcarrier group are -500, -499, -498 in turn, and the subcarrier indexes in the second subcarrier group are -494, -493, -492 in turn. The number of subcarriers between the subcarrier with the smallest index in the first subcarrier group and the subcarrier with the smallest index in the second subcarrier group is 3.

[0189] When the division of the groups is not performed on the multiple subcarriers with continuous indexes, the above (4) can also be understood as that the number of subcarriers between the subcarrier with the largest index in the first J1 subcarriers and the subcarrier with the smallest index in the last J1 subcarriers can be equal to the first value. The description about (4) herein also applies to other implementation manners below, which will not be described in detail herein.

[0190] The number of subcarriers between the first subcarrier group and the second subcarrier group being equal to the first value can also be understood as that:

[0191] The difference between the index of the first subcarrier in the first subcarrier group and the index of the first subcarrier in the second subcarrier group is equal to the first value plus the number of subcarriers in the subcarrier group;

[0192] The difference between the index of the first subcarrier in the first subcarrier group and the index of the first subcarrier in the second subcarrier group is equal to the first value plus the number of subcarriers in the subcarrier group;

[0193] The difference between the index of the first subcarrier in the first subcarrier group and the index of the first subcarrier in the second subcarrier group is equal to the first value plus the number of subcarriers in the subcarrier group.

[0194] For example, when the number of subcarriers in each subcarrier group is 3 and the first value is equal to 3, the above difference can be equal to 6. For another example, when the number of subcarriers in each subcarrier group is 6 and the first value is equal to 6, the above difference can be equal to 12.

[0195] The embodiment of the present application further provides a subcarrier planning corresponding to a first bandwidth, which can include a plurality of 484-tone DRUs, and the plurality of 484-tone DRUs can satisfy at least one of the above (1)-(4).

[0196] The subcarrier plan corresponding to the first bandwidth can include a first guard region, a first data pilot region, a direct current region, a second data pilot region and a second guard region. The first data pilot region is located between the first guard region and the direct current region, and the second data pilot region is located between the direct current region and the second guard region.

[0197] FIG. 5 is a schematic diagram of region division according to an embodiment of the present application. FIG. 5 exemplarily shows the frequency domain positions of the above-mentioned regions.

[0198] The subcarriers in the first guard region and the second guard region can be guard subcarriers, and the subcarriers in the direct current region can be direct current subcarriers (or also referred to as guard subcarriers). The first data pilot region and the second data pilot region can include data subcarriers and pilot subcarriers. Optionally, the two data pilot regions can also include null subcarriers.

[0199] As an example, the first data pilot region to the second data pilot region can not include null subcarriers. As another example, the first data pilot region to the second data pilot region can include null subcarriers. The above-mentioned descriptions about the regions are also applicable to the following implementation modes, and will not be repeated hereinafter.

[0200] A plurality of 484-tone DRUs can be distributed in the first data pilot region and the second data pilot region. The number of the 484-tone DRUs can correspond to the first bandwidth. For example, when the first bandwidth is 80MHz, the 80MHz can correspond to two 484-tone DRUs. For another example, when the first bandwidth is 160MHz, the 160MHz can correspond to four 484-tone DRUs. For yet another example, when the first bandwidth is 320MHz, the 320MHz can correspond to eight 484-tone DRUs. The relationship between the first bandwidth and the number of 484-tone DRUs will not be listed here.

[0201] When the first bandwidth is greater than 80MHz, the features of the 484-tone DRU according to the embodiments of the present application can also be used to design a 996-tone DRU. For example, one 996-tone DRU can include two 484-tone DRUs. According to the relationship between the 996-tone DRU and the 484-tone DRU, the 996-tone DRU corresponding to the first bandwidth of 160MHz or 320MHz can be designed.

[0202] The following takes the first bandwidth of 80MHz as an example to explain the subcarrier plan according to the embodiments of the present application.

[0203] As an example, the total number of subcarriers in the first data pilot region and the second data pilot region is 996. In other words, the total number of subcarriers in the first guard region, the direct current region, and the second guard region is 1024-996=28. As another example, the first data pilot region and the second data pilot region can include null subcarriers. In other words, the total number of subcarriers in the first guard region, the direct current region, and the second guard region can be less than 28. At this time, the total number of subcarriers in the first data pilot region and the second data pilot region is greater than 996, and thus the 484-tone DRU 1 and the 484-tone DRU 2 can be distributed in the two data pilot regions having the total number of subcarriers greater than 996. The selection of the starting index of the two 484-tone DRUs can be more.

[0204] The 484-tone DRU 1 and the 484-tone DRU 2 can be distributed in the first data pilot region and the second data pilot region. The 484-tone DRU 1 and the 484-tone DRU 2 can satisfy at least one of (1) to (4) described above.

[0205] In the embodiments of the present application, the 484-tone DRU 1 and the 484-tone DRU 2 can also satisfy:

[0206] The difference between the index of the pth subcarrier in the 484-tone DRU 1 and the index of the pth subcarrier in the 484-tone DRU 2 is greater than or equal to a second value.

[0207] As an example, the second value=3. The difference between the index of the pth subcarrier in the 484-tone DRU 1 and the index of the pth subcarrier in the 484-tone DRU 2 can be 3. Of course, there can be a value of p in the 484-tone DRU 1 or the 484-tone DRU 2 such that the difference between the index of the pth subcarrier in the 484-tone DRU 1 and the index of the pth subcarrier in the 484-tone DRU 2 is greater than 3, such as the difference=8. The difference=8 described herein is an example in which the direct current region includes 5 direct current subcarriers, but the present application is not limited thereto.

[0208] To distinguish different DRUs, different numbers are used in the present application to distinguish different DRUs. The numbers of the DRUs shown in the present application are only examples and do not constitute a limitation on the present application. For example, the 484-tone DRU 1 and the 484-tone DRU 2 can be distinguished in the manner of 484-tone DRU 1 and 484-tone DRU 2, or in the manner of first 484-tone DRU and second 484-tone DRU, and the present application does not limit the manner of distinguishing different DRUs. The description of the numbers herein also applies to the following implementations.

[0209] As a possible implementation, the index of the first guard region is [-512:-501], the index of the DC region is [-2:2], and the index of the second guard region is [501:511]. The index of the first data pilot region is [-500:-3], and the index of the second data pilot region is [3:500].

[0210] In combination with the characteristics satisfied by the 484-tone DRU and the indexes of the above-mentioned regions, the 484-tone DRU 1 and the 484-tone DRU 2 are described below by way of example.

[0211] By way of example, the index of the 484-tone DRU 1 is:

[0212] By way of example, the index of the 484-tone DRU 2 is:

[0213] For the 484-tone DRU 1 or the 484-tone DRU 2 shown above, the number of subcarriers in each subcarrier group is 3. For each 484-tone DRU, every three subcarriers in the first 480 subcarriers are consecutive subcarriers. However, the subcarrier with the largest index in the first three subcarriers is not consecutive with the subcarrier with the smallest index in the last three subcarriers. The first three subcarriers and the last three subcarriers shown herein are relative, and can also be referred to as two adjacent subcarrier groups. For each 484-tone DRU, the last four subcarriers are single subcarriers, in which the subcarrier with index 468 and the subcarrier with index 469 are consecutive, and the subcarrier with index 474 and the subcarrier with index 475 are consecutive. Meanwhile, the 484-tone DRU 1 and the 484-tone DRU 2 satisfy the above-mentioned characteristic (4), which is not listed one by one herein.

[0214] The 484-tone DRU 1 and the 484-tone DRU 2 shown above can also be understood as follows: the 484-tone DRU can be constituted by a plurality of continuous three subcarriers and a plurality of continuous 2 subcarriers. Each three continuous subcarriers can satisfy at least one of (1), (2) or (4) above. The continuous 2 subcarriers can satisfy (3) above.

[0215] In the embodiments of the present application, there are at least two continuous subcarriers in the 484-tone DRU, which can simultaneously carry signals, so that the fitting error can be reduced when channel smoothing is performed, the accuracy of channel estimation is improved, and the packet error rate is reduced. At the same time, for the 484-tone DRU, at most 7 subcarriers in any 13 continuous subcarriers can carry signals, so that the power amplification multiple of each subcarrier is 1.86 (i.e., 13 / 7 = 1.86), which reaches the maximum power amplification multiple that the 484-tone DRU can reach. For example, for the 484-tone DRU, at most 6 subcarriers in any 13 continuous subcarriers carry signals, and since (484 / 6)*13 = 1049, 1049 > 1024, which exceeds the 1024 subcarriers corresponding to the 80MHz bandwidth, at most 7 subcarriers in any 13 continuous subcarriers in the 484-tone DRU carry signals, which realizes the maximum power amplification multiple.

[0216] Implementation mode two,

[0217] The 242-tone DRU can be distributed in the first data pilot region and the second data pilot region in the subcarrier planning. The description of the first data pilot region and the second data pilot region can be referred to the description of the subcarrier planning shown below.

[0218] For the 242-tone DRU, it can include M1 subcarrier groups in the first data pilot region, and it can include M2 subcarrier groups in the second data pilot region. Optionally, the second data pilot region can also include N single subcarriers. M1, M2 and N are positive integers. The relationship between M1, M2 and N can satisfy: M1*(the number of subcarriers in each of the M1 subcarrier groups) + M2*(the number of subcarriers in each of the M2 subcarrier groups) + N = 242.

[0219] The 242-tone DRU can satisfy at least one of the following:

[0220] (1) Two adjacent subcarrier groups in the M1 subcarrier groups can include a first subcarrier group and a second subcarrier group. The first subcarrier group can include at least two subcarriers with continuous indexes. The second subcarrier group can include at least two subcarriers with continuous indexes.

[0221] Two adjacent subcarrier groups in the M2 subcarrier groups can include a first subcarrier group and a second subcarrier group. The first subcarrier group can include at least two subcarriers with consecutive indices. The second subcarrier group can include at least two subcarriers with consecutive indices.

[0222] The description about the first subcarrier group and the second subcarrier group can refer to the description of (1) in the above implementation manner one, which will not be described in detail here.

[0223] In the case that each subcarrier group includes three subcarriers with consecutive indices, for a 242-tone DRU, M1 can be equal to 42, M2 can be equal to 38, and N=2. That is, 3*(42+38)+2=242. Of course, (M1+M2) can also be less than 80, such as (M1+M2)=79, N=5. Or, (M1+M2)=78, N=8, and so on, which will not be listed one by one here.

[0224] The number of subcarriers included in the subcarrier group corresponding to the 242-tone DRU can be the same as or different from the number of subcarriers included in the subcarrier group corresponding to the 484-tone DRU, which is not limited in the embodiments of the present application.

[0225] (2) The indices of two adjacent subcarrier groups in the M1 subcarrier groups are not consecutive, and the indices of two adjacent subcarrier groups in the M2 subcarrier groups are not consecutive.

[0226] The description about (2) in the implementation manner two can refer to the description of (2) in the above implementation manner one, which will not be described in detail here.

[0227] When the multiple subcarriers with consecutive indices are not divided into groups, the 242-tone DRU can have the following description: the 242-tone DRU is distributed in a first data pilot region and a second data pilot region in a subcarrier plan, the indices of every J2 subcarriers in the first data pilot region are consecutive, and the indices of adjacent J2 subcarriers are not consecutive; and the indices of every J2 subcarriers in the second data pilot region are consecutive, and the indices of adjacent J2 subcarriers are not consecutive. The above J2 can be equal to 3.

[0228] (3) There are two single subcarriers with consecutive indices in the N single subcarriers.

[0229] As an example, N=2, and the indices of the two single subcarriers are consecutive.

[0230] As another example, N is greater than 2, such as N=5 or N=8, and there can be two single subcarriers with consecutive indices in the N single subcarriers, or there can be three single subcarriers with consecutive indices.

[0231] (4) The number of subcarriers between the first subcarrier group and the second subcarrier group can be equal to the first value. For example, if the number of subcarriers in each subcarrier group is 3, the first value can be equal to 9.

[0232] For example, the subcarrier indexes in the first subcarrier group are -500, -499, -498 in sequence, and the subcarrier indexes in the second subcarrier group are -488, -487, -486 in sequence. The number of subcarriers between the subcarrier with the smallest index in the first subcarrier group and the subcarrier with the smallest index in the second subcarrier group is 9.

[0233] The number of subcarriers between the first subcarrier group and the second subcarrier group being equal to the first value can also be understood as:

[0234] The difference between the index of the first subcarrier in the first subcarrier group and the index of the first subcarrier in the second subcarrier group is equal to the first value plus the number of subcarriers in the subcarrier group.

[0235] The difference between the index of the first subcarrier in the first subcarrier group and the index of the first subcarrier in the second subcarrier group is equal to the first value plus the number of subcarriers in the subcarrier group.

[0236] The difference between the index of the first subcarrier in the first subcarrier group and the index of the first subcarrier in the second subcarrier group is equal to the first value plus the number of subcarriers in the subcarrier group.

[0237] The description of (4) in the second implementation can refer to the description of (4) in the first implementation, which will not be described in detail here.

[0238] The first bandwidth corresponds to a subcarrier planning, which can include a plurality of 242-tone DRUs. The plurality of 242-tone DRUs can satisfy at least one of (1)-(4) described above.

[0239] The first bandwidth corresponds to a subcarrier planning, which can include a first guard region, a first data pilot region, a direct current region, a second data pilot region, and a second guard region. The description of each region can refer to the first implementation described above, which will not be described in detail here.

[0240] The plurality of 242-tone DRUs can be distributed in the first data pilot region and the second data pilot region. The number of 242-tone DRUs can correspond to the first bandwidth. For example, when the first bandwidth = 40MHz, the 40MHz can correspond to 2 242-tone DRUs. When the first bandwidth = 80MHz, the 80MHz can correspond to 4 242-tone DRUs. For another example, when the first bandwidth = 160MHz, the 160MHz can correspond to 8 242-tone DRUs. For yet another example, when the first bandwidth = 320MHz, the 320MHz can correspond to 16 242-tone DRUs. The relationship between the first bandwidth and the number of 242-tone DRUs is not listed one by one here.

[0241] When the first data pilot region and the second data pilot region include X subcarriers, the X subcarriers can be divided into Y parts, and each part can include 242-tone DRU number*Q subcarriers. The value of Y can correspond to the first bandwidth. Q represents the number of index-continuous subcarriers included in each subcarrier group. The description of the Y parts can also refer to the description of FIG. 6a, which is not described in detail here.

[0242] For example, when the first bandwidth = 80MHz, the number of 242-tone DRUs = 4, and X is greater than or equal to 242*4 (i.e. 968). Y can be greater than or equal to X / 4Q. For example, X can be equal to 996. When Q = 3, Y can be greater than or equal to 81. For example, Y can be equal to 83, i.e. 83*12 = 996.

[0243] For another example, when the first bandwidth = 160MHz, the number of 242-tone DRUs = 8, and X is greater than or equal to 242*8 (i.e. 1936). Y can be greater than or equal to X / 8Q. For example, X can be equal to 1992. When Q = 3, Y can be greater than or equal to 81. For example, Y can be equal to 83, i.e. 83*24 = 1992.

[0244] Here, the value of Y can change when the number of subcarriers included in each subcarrier group is 2 or 4, and the like, which is not listed one by one here. The value of X shown above is only an example, and the value of X can also change when the direct current region or the guard region changes, which is not listed one by one here.

[0245] The following takes the first bandwidth = 80MHz as an example to illustrate the subcarrier planning provided by the embodiments of the present application.

[0246] As an example, the total number of subcarriers in the first data pilot region and the second data pilot region is 996. In other words, the total number of subcarriers in the first guard region, the direct current region and the second guard region is 1024-996=28. As another example, the first data pilot region and the second data pilot region can include null subcarriers. In other words, the total number of subcarriers in the first guard region, the direct current region and the second guard region can be less than 28. At this time, the total number of subcarriers in the first data pilot region and the second data pilot region is greater than 996, and therefore the 242-tone DRU 1, the 242-tone DRU 2, the 242-tone DRU 3 and the 242-tone DRU 4 can be distributed in the two data pilot regions with the total number of subcarriers greater than 996. The selection of the starting index of the four 242-tone DRUs can be more.

[0247] The 242-tone DRU 1-242-tone DRU 4 can be distributed in the first data pilot region and the second data pilot region. The 242-tone DRU 1-242-tone DRU 4 can satisfy at least one of (1)-(4) described above. The 242-tone DRU 1-242-tone DRU 4 can satisfy (1)-(4) described above.

[0248] In the embodiments of the present application, the 242-tone DRU 1-242-tone DRU 4 can also satisfy at least one of the following:

[0249] The difference between the index of the pth subcarrier in the 242-tone DRU 1 and the index of the pth subcarrier in the 242-tone DRU 2 is greater than or equal to a second value;

[0250] The difference between the index of the pth subcarrier in the 242-tone DRU 2 and the index of the pth subcarrier in the 242-tone DRU 3 is greater than or equal to a second value;

[0251] The difference between the index of the pth subcarrier in the 242-tone DRU 3 and the index of the pth subcarrier in the 242-tone DRU 4 is greater than or equal to a second value.

[0252] As an example, the second value can be equal to 3. p is an integer greater than or equal to 1 and less than or equal to 242. That is, the value of p can be determined by the size of the target DRU. For example, p can also be an integer greater than or equal to 0 and less than or equal to 241, and the like, which are not listed here. The description of p is also applicable to other implementations.

[0253] As an example, there can be values of p such that the difference between the index of the pth subcarrier in the 242-tone DRU 1 and the index of the pth subcarrier in the 242-tone DRU 2 is equal to a second value, the difference between the index of the pth subcarrier in the 242-tone DRU 2 and the index of the pth subcarrier in the 242-tone DRU 3 is equal to the second value, and the difference between the index of the pth subcarrier in the 242-tone DRU 3 and the index of the pth subcarrier in the 242-tone DRU 4 is equal to the second value.

[0254] As another example, there can also be values of p such that the difference between the index of the pth subcarrier in the 242-tone DRU 1 and the index of the pth subcarrier in the 242-tone DRU 2 is greater than a second value (e.g., the difference = 8 as described above), the difference between the index of the pth subcarrier in the 242-tone DRU 2 and the index of the pth subcarrier in the 242-tone DRU 3 is greater than the second value (e.g., the difference = 8 as described above), and the difference between the index of the pth subcarrier in the 242-tone DRU 3 and the index of the pth subcarrier in the 242-tone DRU 4 is greater than the second value (e.g., the difference = 8 as described above). For example, for two 242-tone DRUs distributed on both sides of the DC region, i.e., for two subcarrier groups distributed on both sides of the DC region and belonging to different 242-tone DRUs, since the two subcarrier groups are distributed on both sides of the DC region, the two subcarrier groups belonging to different 242-tone DRUs can satisfy the above characteristics. For example, for the 242-tone DRU 2 and the 242-tone DRU 3, p is equal to 124, or equal to 125, or equal to 126, when the index of the DC region is [-2:2]. The values of p listed here are only examples and should not be construed as limiting the present application.

[0255] As a possible implementation, the index of the 242-tone DRU can be designed independently in combination with the characteristics satisfied by the 242-tone DRU described above and the index of the first bandwidth corresponding to the plurality of 242-tone DRUs.

[0256] As another possible implementation, the index of the 242-tone DRU can be designed in combination with the index of the 484-tone DRU shown in implementation one.

[0257] According to the design of the 484-tone DRU in the first implementation, each 484-tone DRU can be split into two 242-tone DRUs. As for each 484-tone DRU, its odd subcarrier groups can be split into one 242-tone DRU, and its even subcarrier groups can be split into another 242-tone DRU. For example, the first bandwidth = 80MHz, according to the relationship between the 484-tone DRU and the 242-tone DRU, and the above-mentioned design of the first implementation, 2 484-tone DRUs and 4 242-tone DRUs in the subcarrier planning corresponding to the 80MHz. For example, 484-tone DRU 1 = 242-tone DRU 1 + 242-tone DRU 3, and 484-tone DRU 2 = 242-tone DRU 2 + 242-tone DRU 4.

[0258] The above description of the 242-tone DRU and the 484-tone DRU also applies to the 996-tone DRU and the 484-tone DRU, and to the first bandwidth = 160MHz or 320MHz, and the like, which will not be described in detail here.

[0259] As another possible implementation, the index of the 484-tone DRU can be designed in combination with the index of the 242-tone DRU shown in the second implementation.

[0260] According to the design of the 242-tone DRU in the second implementation, two 242-tone DRUs can be combined to obtain one 484-tone DRU. For example, the first bandwidth = 80MHz, according to the relationship between the 484-tone DRU and the 242-tone DRU, and the above-mentioned design of the second implementation, 4 242-tone DRUs and 2 484-tone DRUs in the subcarrier planning corresponding to the 80MHz. For example, 242-tone DRU 1 and 242-tone DRU 3 can be combined to obtain 484-tone DRU 1, and 242-tone DRU 2 and 242-tone DRU 4 can be combined to obtain 484-tone DRU 2. For another example, 242-tone DRU 1 and 242-tone DRU 2 can be combined to obtain 484-tone DRU 1, and 242-tone DRU 3 and 242-tone DRU 4 can be combined to obtain 484-tone DRU 2.

[0261] The description of the 242-tone DRU and the 484-tone DRU is also applicable to the 996-tone DRU and the 484-tone DRU, and is also applicable to the first bandwidth = 160 MHz or 320 MHz or 40 MHz, and the like, which will not be described herein.

[0262] The indexes of the 242-tone DRU (or the indexes of the 484-tone DRU) designed in different manners can be the same or different, which is not limited in the embodiments of the present application.

[0263] The indexes of the 242-tone DRU are exemplarily described as follows.

[0264] As a possible implementation, the index of the first guard region is [-512: -501], the index of the DC region is [-2: 2], and the index of the second guard region is [501: 511]. The index of the first data pilot region is [-500: -3], and the index of the second data pilot region is [3: 500].

[0265] The total number of subcarriers in the first data pilot region and the second data pilot region is 996. For the 242-tone DRU, the 996 subcarriers can be divided into 83 parts, each part including 12 subcarriers (i.e. 83*12=996).

[0266] FIG. 6a is an allocation diagram of the 242-tone DRU provided by the embodiments of the present application. As shown in FIG. 6a, for the 1st part to the 80th part, in each part, the consecutive 3 subcarriers can be allocated to 4 242-tone DRUs in turn. That is, the consecutive 3 subcarriers of each 242-tone DRU in each part can be divided into a subcarrier group. For example, for the 1st part, the 1st subcarrier to the 3rd subcarrier in the 1st part can be allocated to the 242-tone DRU 1, the 4th subcarrier to the 6th subcarrier in the 1st part can be allocated to the 242-tone DRU 2, the 7th subcarrier to the 9th subcarrier in the 1st part can be allocated to the 242-tone DRU 3, and the 10th subcarrier to the 12th subcarrier in the 1st part can be allocated to the 242-tone DRU 4. By analogy, for the 2nd part to the 80th part, which will not be listed herein.

[0267] For the 81st part, the first 2 subcarriers in the 3 continuous subcarriers can be allocated to the 4 242-tone DRUs in turn, and the last subcarrier in the 3 continuous subcarriers is not allocated. In other words, the 1st subcarrier and the 2nd subcarrier in the 81st part are allocated to the 242-tone DRU 1, the 4th subcarrier and the 5th subcarrier in the 81st part are allocated to the 242-tone DRU 2, the 7th subcarrier and the 8th subcarrier in the 81st part are allocated to the 242-tone DRU 3, and the 10th subcarrier and the 11th subcarrier in the 81st part are allocated to the 242-tone DRU 4. The 82nd part and the 83rd part are not allocated.

[0268] The above allocation method is only an example, and the process of obtaining the index of the 242-tone DRU according to the characteristics met by the 242-tone DRU can not be limited to the method shown above.

[0269] Taking the index of the first data pilot region as [-500, -3] and the index of the second data pilot region as [3:500] as an example, the two data pilot regions can be divided into 83 parts, such as the index of the 1st part is [-500:-489], the index of the 2nd part is [-488:-477], the index of the 3rd part is [-476:-465], and so on, the index of the 81st part is [467:478], the index of the 82nd part is [477:488], and the index of the 83rd part is [489:500].

[0270] In combination with the above allocation method, or in combination with the characteristics met by the 242-tone DRU and the index of the above regions, the 242-tone DRU 1-242-tone DRU 4 are described below as examples.

[0271] For example, the index of the 242-tone DRU 1 can be:

[0272] For example, the index of the 242-tone DRU 2 can be:

[0273] For example, the index of the 242-tone DRU 3 can be:

[0274] For example, the index of the 242-tone DRU 4 can be:

[0275] The 242-tone DRU 1~242-tone DRU 4 shown above can also be understood as follows: the 242-tone DRU can be composed of a plurality of consecutive three subcarriers, and one or more consecutive 2 subcarriers. Each three consecutive subcarriers can satisfy at least one of the above (1), (2) or (4). The consecutive 2 subcarriers can satisfy the above (3).

[0276] In the embodiment of the present application, there are at least two consecutive subcarriers in the 242-tone DRU, which can simultaneously carry signals, so that the fitting error can be reduced when channel smoothing is performed, the accuracy of channel estimation is improved, and the packet error rate is reduced. At the same time, for the 242-tone DRU, at most 4 subcarriers in any 13 consecutive subcarriers can carry signals, so that the power amplification multiple of each subcarrier is 3.25 (i.e. 13 / 4 = 3.25), which reaches the maximum power amplification multiple that the 242-tone DRU can reach. For example, for the 242-tone DRU, at most 3 subcarriers in any 13 consecutive subcarriers carry signals, and since (242 / 3)*13 = 1048, 1048 > 1024, which exceeds the 1024 subcarriers corresponding to the 80MHz bandwidth, at most 4 subcarriers in any 13 consecutive subcarriers of the 242-tone DRU carry signals, which realizes the maximum power amplification multiple.

[0277] Implementation mode three,

[0278] The 106-tone DRU can be distributed in the first data pilot region and the second data pilot region in the subcarrier planning. The description of the first data pilot region and the second data pilot region can be referred to the description of the subcarrier planning shown below.

[0279] For the 106-tone DRU, it can include M1 subcarrier groups in the first data pilot region, and M2 subcarrier groups in the second data pilot region. Optionally, the second data pilot region can also include N single subcarriers. M1, M2 and N are positive integers. The relationship between M1, M2 and N can satisfy: M1*(the number of subcarriers in each of the M1 subcarrier groups) + M2*(the number of subcarriers in each of the M2 subcarrier groups) + N = 106.

[0280] The 106-tone DRU can satisfy at least one of the following:

[0281] (1) Two adjacent subcarrier groups in the M1 subcarrier groups can include a first subcarrier group and a second subcarrier group. The first subcarrier group can include at least two subcarriers which are index-continuous. The second subcarrier group can include at least two subcarriers which are index-continuous. Optionally, the first subcarrier group can further include index-non-continuous subcarriers, and the second subcarrier group can further include index-non-continuous subcarriers.

[0282] Two adjacent subcarrier groups in the M2 subcarrier groups can include a first subcarrier group and a second subcarrier group. The first subcarrier group can include at least two subcarriers which are index-continuous. The second subcarrier group can include at least two subcarriers which are index-continuous. Optionally, the first subcarrier group can further include index-non-continuous subcarriers, and the second subcarrier group can further include index-non-continuous subcarriers.

[0283] If each of the M1 subcarrier groups includes S subcarriers, the difference between the index of the subcarrier with the largest index and the index of the subcarrier with the smallest index in the S subcarriers is greater than or equal to S, and S is an integer greater than or equal to 3. That is, the difference between the index of the subcarrier with the smallest index and the index of the subcarrier with the largest index in the first subcarrier group is greater than or equal to the total number of subcarriers included in the first subcarrier group. That is, the difference between the index of the subcarrier with the smallest index and the index of the subcarrier with the largest index in the second subcarrier group is greater than or equal to the total number of subcarriers included in the second subcarrier group.

[0284] As an example, each subcarrier group can include three subcarriers, such as a first subcarrier, a second subcarrier, and a third subcarrier. For example, M1+M2=35, N=1; or M1+M2=34, N=4; or the like, which will not be listed one by one here. The difference between the index of the third subcarrier and the index of the first subcarrier is greater than or equal to 3.

[0285] As another example, each subcarrier group can include four subcarriers, such as a first subcarrier, a second subcarrier, a third subcarrier, and a fourth subcarrier. For example, M1+M2=26, N=2; or M1+M2=25, N=6; or the like, which will not be listed one by one here. The second subcarrier is located between the first subcarrier and the third subcarrier, and the third subcarrier is located between the second subcarrier and the fourth subcarrier. The difference between the index of the first subcarrier and the index of the fourth subcarrier is greater than or equal to 4. For example, the index of the second subcarrier in the first subcarrier group is continuous with the index of the third subcarrier in the first subcarrier group; or the index of the third subcarrier in the first subcarrier group is continuous with the index of the fourth subcarrier in the first subcarrier group. Similarly, the index of the second subcarrier in the second subcarrier group is continuous with the index of the third subcarrier in the second subcarrier group; or the index of the third subcarrier in the second subcarrier group is continuous with the index of the fourth subcarrier in the second subcarrier group.

[0286] The number of subcarriers included in each subcarrier group is not listed here. The present embodiments do not limit whether the N single subcarriers are continuous.

[0287] The description of the first subcarrier group and the second subcarrier group can refer to the description of (1) in the above-mentioned implementation manner one, and will not be described in detail here.

[0288] (2) The index of the two adjacent subcarrier groups in the M1 subcarrier groups is not continuous, and the index of the two adjacent subcarrier groups in the M2 subcarrier groups is not continuous.

[0289] The description of (2) in the above-mentioned implementation manner three can refer to the description of (2) in the above-mentioned implementation manner one, and will not be described in detail here.

[0290] When the multiple subcarriers with non-continuous indexes are not divided into groups, the 106-tone DRU can have the following description: the 106-tone DRU is distributed in a first data pilot region and a second data pilot region in a subcarrier plan, in the first data pilot region, the index of every 4 adjacent subcarriers is continuous, and the index of the adjacent 4 subcarriers is not continuous; and in the second data pilot region, the index of every 4 adjacent subcarriers is continuous, and the index of the adjacent 4 subcarriers is not continuous.

[0291] (3) The number of subcarriers between the first subcarrier group and the second subcarrier group is equal to a first value. The first value can be greater than or equal to 9. For example, the number of subcarriers between the first subcarrier group and the second subcarrier group can be 10 or 12, and the like, which will not be listed here.

[0292] The above-mentioned (3) can also be replaced by: the first subcarrier group and the second subcarrier group satisfy at least one of the following:

[0293] The difference between the index of the first subcarrier in the first subcarrier group and the index of the first subcarrier in the second subcarrier group is greater than a third value;

[0294] The difference between the index of the second subcarrier in the first subcarrier group and the index of the first subcarrier in the second subcarrier group is greater than a third value;

[0295] The difference between the index of the third subcarrier in the first subcarrier group and the index of the third subcarrier in the second subcarrier group is greater than a third value;

[0296] The difference between the index of the fourth subcarrier in the first subcarrier group and the index of the fourth subcarrier in the second subcarrier group is greater than a third value.

[0297] For example, the third value = 35.

[0298] The description of the implementation manner three (3) can refer to the description of the implementation manner one (4) or the implementation manner two (4) above, and will not be described in detail here.

[0299] The first bandwidth corresponding subcarrier plan can include a first guard region, a first data pilot region, a direct current region, a second data pilot region and a second guard region. The description of each region can refer to the implementation manner one above, and will not be described in detail here.

[0300] The first bandwidth corresponding subcarrier plan can include a first guard region, a first data pilot region, a direct current region, a second data pilot region and a second guard region. The description of each region can refer to the implementation manner one above, and will not be described in detail here.

[0301] The plurality of 106-tone DRUs can be distributed in the first data pilot region and the second data pilot region. The number of 106-tone DRUs can correspond to the first bandwidth. For example, the first bandwidth = 40MHz, the 40MHz can correspond to 4 106-tone DRUs. The first bandwidth = 80MHz, the 80MHz can correspond to 8 106-tone DRUs. For example, the first bandwidth = 160MHz, the 160MHz can correspond to 16 106-tone DRUs. For example, the first bandwidth = 320MHz, the 320MHz can correspond to 32 106-tone DRUs. The relationship between the first bandwidth and the number of 106-tone DRUs will not be listed one by one here.

[0302] The following takes the first bandwidth = 80MHz as an example to illustrate the subcarrier plan provided by the embodiment of the application.

[0303] As an example, the total number of subcarriers in the first data pilot region and the second data pilot region is 996. In other words, the total number of subcarriers in the first guard region, the direct current region and the second guard region is 1024-996 = 28. As another example, the first data pilot region and the second data pilot region can include empty subcarriers. In other words, the total number of subcarriers in the first guard region, the direct current region and the second guard region can be less than 28. At this time, the total number of subcarriers in the first data pilot region and the second data pilot region is greater than 996, so the 106-tone DRU 1, the 106-tone DRU 2, the 106-tone DRU 3, the 106-tone DRU 4, the 106-tone DRU 5, the 106-tone DRU 6, the 106-tone DRU 7 and the 106-tone DRU 8 can be distributed in the two data pilot regions with the total number of subcarriers greater than 996. The selection of the starting index of the 8 106-tone DRUs can be more.

[0304] The 106-tone DRU 1 to the 106-tone DRU 8 can be distributed in the first data pilot region and the second data pilot region. The 106-tone DRU 1 to the 106-tone DRU 8 can satisfy at least one of (1) to (3) described above.

[0305] (4) The 106-tone DRU 1 to the 106-tone DRU 8 can satisfy at least one of:

[0306] The difference between the index of the p-th subcarrier in the 106-tone DRU 1 and the index of the p-th subcarrier in the 106-tone DRU 2 is greater than or equal to a second value;

[0307] The difference between the index of the p-th subcarrier in the 106-tone DRU 2 and the index of the p-th subcarrier in the 106-tone DRU 3 is greater than or equal to a second value;

[0308] The difference between the index of the p-th subcarrier in the 106-tone DRU 3 and the index of the p-th subcarrier in the 106-tone DRU 4 is greater than or equal to a second value;

[0309] The difference between the index of the p-th subcarrier in the 106-tone DRU 5 and the index of the p-th subcarrier in the 106-tone DRU 6 is greater than or equal to a second value;

[0310] The difference between the index of the p-th subcarrier in the 106-tone DRU 6 and the index of the p-th subcarrier in the 106-tone DRU 7 is greater than or equal to a second value;

[0311] The difference between the index of the p-th subcarrier in the 106-tone DRU 7 and the index of the p-th subcarrier in the 106-tone DRU 8 is greater than or equal to a second value.

[0312] For example, the second value can be equal to 3. p is an integer greater than or equal to 1 and less than or equal to 106.

[0313] As an example, there can be multiple values of p such that the above difference is equal to 3.

[0314] As another example, there can be one or more values of p such that the above difference is greater than 3. As for two 106-tone DRUs distributed on both sides of the direct current region, i.e., two subcarrier groups distributed on both sides of the direct current region and belonging to different 106-tone DRUs, since the two subcarrier groups are distributed on both sides of the direct current region, it can cause the two subcarrier groups belonging to different 106-tone DRUs to satisfy the above characteristics. Taking the index of the direct current region as [-2:2] as an example, for 106-tone DRU 2 and 106-tone DRU 3, p can be equal to 56. The values of p listed here are only examples and should not be construed as limiting the present application.

[0315] As a possible implementation, the indexes of the plurality of 106-tone DRUs corresponding to the first bandwidth can be designed independently in combination with the characteristics satisfied by the 106-tone DRUs described above and the first data pilot region and the second data pilot region.

[0316] As another possible implementation, the indexes of the 106-tone DRUs can be designed in combination with the indexes of the 484-tone DRUs shown in implementation one. For example, one 484-tone DRU can be split into four 106-tone DRUs.

[0317] As yet another possible implementation, the indexes of the 106-tone DRUs can be designed in combination with the indexes of the 242-tone DRUs shown in implementation two.

[0318] According to the 242-tone DRUs designed in implementation two, each 242-tone DRU can be split into two 106-tone DRUs and one 26-tone DRU. For example, when the first bandwidth = 80MHz, 242-tone DRU 1 = 106-tone DRU 1 + 106-tone DRU 5 + 26-tone DRU 33, 242-tone DRU 2 = 106-tone DRU 2 + 106-tone DRU 6 + 26-tone DRU 34, 242-tone DRU 3 = 106-tone DRU 3 + 106-tone DRU 7 + 26-tone DRU 35, and 242-tone DRU 4 = 106-tone DRU 4 + 106-tone DRU 8 + 26-tone DRU 36.

[0319] As an example, for each 242-tone DRU, its odd subcarriers can be split into one 106-tone DRU, its even subcarriers can be split into another 106-tone DRU, and the rest of the subcarriers, except the 106 subcarriers included in the 106-tone DRUs, can belong to one 26-tone DRU.

[0320] As another example, for each 242-tone DRU, X1 subcarriers in every three subcarrier groups can be split into one 106-tone DRU, X2 subcarriers in every three subcarrier groups can be split into another 106-tone DRU, and one subcarrier in every three subcarrier groups, except the X1 subcarriers and the X2 subcarriers, can be split into one 26-tone DRU. The X1 subcarriers and the X2 subcarriers are mutually exclusive. For example, X1 = X2 = 4. The designed 106-tone DRUs can satisfy at least one of the features shown in (1)-(3) above, and different 106-tone DRUs can also satisfy the feature shown in (4) above. The following is an example.

[0321] As shown in FIG. 6a, the first data pilot region and the second data pilot region can be divided into 83 parts. In an embodiment of the present application, every three of the first 81 parts can be taken as one block, i.e., the 81 parts can be divided into 27 blocks, and each block includes three adjacent parts.

[0322] FIG. 6b is an allocation diagram of a 106-tone DRU according to an embodiment of the present application. FIG. 6b shows one block as an example. The description of the 2nd block to the 26th block can refer to the description of the 1st block, and will not be described in detail hereinafter.

[0323] As shown in FIG. 6b, in the 1st block to the 26th block, each 242-tone DRU has 9 subcarriers (i.e., each subcarrier group includes 3 subcarriers, and the three subcarrier groups have 9 subcarriers), and in the 27th block, each 242-tone DRU has 8 subcarriers (i.e., 3+3+2=8). The 242-tone DRU is divided into one 26-tone DRU and two 106-tone DRUs. For example, the subcarriers of each 106-tone DRU in each block can be divided into one subcarrier group.

[0324] For the 1st block to the 26th block, the 1st subcarrier of each 242-tone DRU can be allocated to a 26-tone DRU. That is, for the 1st block to the 26th block, the 1st subcarrier of the 242-tone DRU 1 can be allocated to the first 26-tone DRU (there are 26 blocks in total, corresponding to 26 subcarriers), the 1st subcarrier of the 242-tone DRU 2 can be allocated to the second 26-tone DRU, the 1st subcarrier of the 242-tone DRU 3 can be allocated to the first 26-tone DRU, and the 1st subcarrier of the 242-tone DRU 4 can be allocated to the second 26-tone DRU.

[0325] For the 1st block to the 26th block, the 2nd, 5th, 6th, 9th subcarriers of each 242-tone DRU can be allocated to a 106-tone DRU, and the 3rd, 4th, 7th, 8th subcarriers can be allocated to another 106-tone DRU. As shown in FIG. 6b, in the 1st block, the 242-tone DRU 1 has 9 subcarriers, the 2nd, 5th, 6th, 9th subcarriers (the thick line part shown in FIG. 6b) of the 9 subcarriers can be allocated to the 106-tone DRU 1, and the 3rd, 4th, 7th, 8th subcarriers (the dashed line part shown in FIG. 6b) of the 9 subcarriers can be allocated to the 106-tone DRU 5. Similarly, in the 1st block, the 2nd, 5th, 6th, 9th subcarriers (the thick line part shown in FIG. 6b) of the 242-tone DRU 2 can be allocated to the 106-tone DRU 2, and the 3rd, 4th, 7th, 8th subcarriers (the dashed line part shown in FIG. 6b) can be allocated to the 106-tone DRU 6. In the 1st block, the 2nd, 5th, 6th, 9th subcarriers (the thick line part shown in FIG. 6b) of the 242-tone DRU 3 can be allocated to the 106-tone DRU 3, and the 3rd, 4th, 7th, 8th subcarriers (the dashed line part shown in FIG. 6b) can be allocated to the 106-tone DRU 7. In the 1st block, the 2nd, 5th, 6th, 9th subcarriers (the thick line part shown in FIG. 6b) of the 242-tone DRU 4 can be allocated to the 106-tone DRU 4, and the 3rd, 4th, 7th, 8th subcarriers (the dashed line part shown in FIG. 6b) can be allocated to the 106-tone DRU 8. For the 2nd block to the 26th block, details are not described herein.

[0326] FIG. 6c is a diagram of allocation of a 106-tone DRU according to an embodiment of the present application. FIG. 6c shows a diagram of allocation of the 27th block.

[0327] As shown in FIG. 6c, in the 27th block, the 2nd and 4th subcarriers of each 242-tone DRU (the thick line part shown in FIG. 6c) can be allocated to one 106-tone DRU, and the 3rd and 5th subcarriers (the dashed line part shown in FIG. 6c) can be allocated to another 106-tone DRU. In FIG. 6c, in the 27th block, the 1st subcarrier of each 242-tone DRU can be allocated to a 26-tone DRU. The 6th to 8th subcarriers of each 242-tone DRU can not be allocated.

[0328] The 106-tone DRU obtained through the above allocation manner can include continuous subcarriers in each 106-tone DRU, and the accuracy of channel estimation can be improved. Further, the pilot subcarriers can be selected from the continuous subcarriers, and the accuracy of channel estimation can be further improved.

[0329] The indexes of the 106-tone DRUs designed in different manners can be the same or different, and the embodiments of the present application do not limit this.

[0330] The indexes of the 106-tone DRUs are exemplarily described below.

[0331] As a possible implementation manner, the index of the first guard region is [-512: -501], the index of the direct current region is [-2: 2], and the index of the second guard region is [501: 511]. The index of the first data pilot region is [-500: -3], and the index of the second data pilot region is [3: 500].

[0332] The indexes shown below are exemplarily shown based on the allocation manners shown in FIG. 6b and FIG. 6c, but should not be understood as a limitation to the present application.

[0333] Exemplarily, the index of the 106-tone DRU 1 can be:

[0334] Exemplarily, the index of the 106-tone DRU 2 can be:

[0335] Exemplarily, the index of the 106-tone DRU 3 can be:

[0336] Exemplarily, the index of the 106-tone DRU 4 can be:

[0337] Exemplarily, the index of the 106-tone DRU 5 can be:

[0338] For example, the index of the 106-tone DRU 6 can be:

[0339] For example, the index of the 106-tone DRU 7 can be:

[0340] For example, the index of the 106-tone DRU 8 can be:

[0341] The 106-tone DRU 1-106-tone DRU 8 shown above can also be understood as: the 106-tone DRU can be composed of single subcarriers and two continuous subcarriers alternately.

[0342] The following illustrates four 26-tone DRUs split from a 242-tone DRU.

[0343] For example, the index of the first 26-tone DRU (i.e., 26-tone DRU 33) can be:

[0344] For example, the index of the second 26-tone DRU (i.e., 26-tone DRU 34) can be:

[0345] For example, the index of the third 26-tone DRU (i.e., 26-tone DRU 35) can be:

[0346] For example, the index of the fourth 26-tone DRU (i.e., 26-tone DRU 36) can be:

[0347] In the embodiment, there are at least two continuous subcarriers in the 106-tone DRU, which can simultaneously carry signals, so that the fitting error can be reduced when performing channel smoothing, the accuracy of channel estimation is improved, and the packet error rate is reduced. At the same time, for the 106-tone DRU, at most two subcarriers in any 13 continuous subcarriers can carry signals, so that the power amplification multiple of each subcarrier is 6.5 (i.e., 13 / 2=6.5), which reaches the maximum power amplification multiple that the 106-tone DRU can reach.

[0348] Implementation manner four,

[0349] 52-tone DRU is distributed in a first data pilot region and a second data pilot region in a subcarrier plan. The first data pilot region includes M1 subcarrier groups, and the second data pilot region includes M2 subcarrier groups. M1 and M2 are positive integers. Optionally, the second data pilot region can also include N single subcarriers. M1, M2 and N are positive integers. The relationship between M1, M2 and N can satisfy: M1*(the number of subcarriers in each of the M1 subcarrier groups)+M2*(the number of subcarriers in each of the M2 subcarrier groups)+N=52.

[0350] The 52-tone DRU can satisfy at least one of the following:

[0351] (1) Each of the M1 subcarrier groups includes a first subcarrier and a second subcarrier, and the first subcarrier and the second subcarrier are discontinuous. Two adjacent subcarrier groups in the M1 subcarrier groups include a first subcarrier group and a second subcarrier group. The first subcarrier group and the second subcarrier group satisfy at least one of the following: the difference between the index of the first subcarrier in the first subcarrier group and the index of the first subcarrier in the second subcarrier group is greater than a third value; the difference between the index of the second subcarrier in the first subcarrier group and the index of the second subcarrier in the second subcarrier group is greater than the third value.

[0352] Each of the M2 subcarrier groups includes a first subcarrier and a second subcarrier, and the first subcarrier and the second subcarrier are discontinuous. Two adjacent subcarrier groups in the M2 subcarrier groups include a first subcarrier group and a second subcarrier group. The first subcarrier group and the second subcarrier group satisfy at least one of the following: the difference between the index of the first subcarrier in the first subcarrier group and the index of the first subcarrier in the second subcarrier group is greater than a third value; the difference between the index of the second subcarrier in the first subcarrier group and the index of the second subcarrier in the second subcarrier group is greater than the third value.

[0353] For example, the third value=35. The first subcarrier group and the second subcarrier group can satisfy: the difference between the index of the first subcarrier in the first subcarrier group and the index of the first subcarrier in the second subcarrier group is equal to the third value+1, and the difference between the index of the first subcarrier in the first subcarrier group and the index of the first subcarrier in the second subcarrier group is equal to the third value+1.

[0354] (2) The difference between the index of the first subcarrier and the index of the second subcarrier in the same subcarrier group is greater than or equal to a fourth value.

[0355] For example, the fourth value=13. For another example, the fourth value can be equal to 12, etc.

[0356] The embodiment of the present application further provides a subcarrier plan corresponding to the first bandwidth, which can include a plurality of 52-tone DRUs, and the plurality of 52-tone DRUs can satisfy at least one of (1)-(2) shown above.

[0357] The subcarrier plan corresponding to the first bandwidth can include a first guard region, a first data pilot region, a direct current region, a second data pilot region and a second guard region. The description of each region can refer to the above-mentioned implementation mode one, and will not be described in detail here.

[0358] The plurality of 52-tone DRUs can be distributed in the first data pilot region and the second data pilot region. The number of 52-tone DRUs can correspond to the first bandwidth. For example, the 40MHz can correspond to 8 52-tone DRUs when the first bandwidth is 40MHz. The 80MHz can correspond to 16 52-tone DRUs when the first bandwidth is 80MHz. For example, the 160MHz can correspond to 32 52-tone DRUs when the first bandwidth is 160MHz. For example, the 320MHz can correspond to 64 52-tone DRUs when the first bandwidth is 320MHz. The relationship between the first bandwidth and the number of 52-tone DRUs will not be listed one by one here.

[0359] The following takes the first bandwidth of 80MHz as an example to illustrate the subcarrier plan provided by the embodiment of the present application.

[0360] As an example, the total number of subcarriers in the first data pilot region and the second data pilot region is 996. In other words, the total number of subcarriers in the first guard region, the direct current region, and the second guard region is 1024 - 996 = 28. As another example, the first data pilot region and the second data pilot region can include null subcarriers. In other words, the total number of subcarriers in the first guard region, the direct current region, and the second guard region can be less than 28. At this time, the total number of subcarriers in the first data pilot region and the second data pilot region is greater than 996, and thus 52-tone DRU 1, 52-tone DRU 2, 52-tone DRU 3, 52-tone DRU 4, 52-tone DRU 5, 52-tone DRU 6, 52-tone DRU 7, 52-tone DRU 8, 52-tone DRU 9, 52-tone DRU 10, 52-tone DRU 11, 52-tone DRU 12, 52-tone DRU 13, 52-tone DRU 14, 52-tone DRU 15, 52-tone DRU 16 can be distributed in the two data pilot regions in which the total number of subcarriers is greater than 996. The selection of the starting index of the 16 52-tone DRUs can be more.

[0361] As an example, the total number of subcarriers in the first data pilot region and the second data pilot region is 996. In other words, the total number of subcarriers in the first guard region, the direct current region, and the second guard region is 1024 - 996 = 28. As another example, the first data pilot region and the second data pilot region can include null subcarriers. In other words, the total number of subcarriers in the first guard region, the direct current region, and the second guard region can be less than 28. At this time, the total number of subcarriers in the first data pilot region and the second data pilot region is greater than 996, and thus 52-tone DRU 1, 52-tone DRU 2, 52-tone DRU 3, 52-tone DRU 4, 52-tone DRU 5, 52-tone DRU 6, 52-tone DRU 7, 52-tone DRU 8, 52-tone DRU 9, 52-tone DRU 10, 52-tone DRU 11, 52-tone DRU 12, 52-tone DRU 13, 52-tone DRU 14, 52-tone DRU 15, 52-tone DRU 16 can be distributed in the two data pilot regions in which the total number of subcarriers is greater than 996. The selection of the starting index of the 16 52-tone DRUs can be more.

[0362] (3) 52-tone DRU 1 ~ 52-tone DRU 16 can satisfy at least one of the following:

[0363] The difference between the index of the p-th subcarrier in the 52-tone DRU 1 and the index of the p-th subcarrier in the 52-tone DRU 2 is greater than or equal to a second value;

[0364] The difference between the index of the p-th subcarrier in the 52-tone DRU 2 and the index of the p-th subcarrier in the 52-tone DRU 3 is greater than or equal to a second value;

[0365] The difference between the index of the p-th subcarrier in the 52-tone DRU 3 and the index of the p-th subcarrier in the 52-tone DRU 4 is greater than or equal to a second value;

[0366] the difference between the index of the pth subcarrier in the 52-tone DRU 5 and the index of the pth subcarrier in the 52-tone DRU 6 is greater than or equal to a second value;

[0367] the difference between the index of the pth subcarrier in the 52-tone DRU 5 and the index of the pth subcarrier in the 52-tone DRU 6 is greater than or equal to a second value;

[0368] the difference between the index of the pth subcarrier in the 52-tone DRU 5 and the index of the pth subcarrier in the 52-tone DRU 6 is greater than or equal to a second value;

[0369] the difference between the index of the pth subcarrier in the 52-tone DRU 5 and the index of the pth subcarrier in the 52-tone DRU 6 is greater than or equal to a second value;

[0370] the difference between the index of the pth subcarrier in the 52-tone DRU 5 and the index of the pth subcarrier in the 52-tone DRU 6 is greater than or equal to a second value;

[0371] the difference between the index of the pth subcarrier in the 52-tone DRU 5 and the index of the pth subcarrier in the 52-tone DRU 6 is greater than or equal to a second value;

[0372] the difference between the index of the pth subcarrier in the 52-tone DRU 5 and the index of the pth subcarrier in the 52-tone DRU 6 is greater than or equal to a second value;

[0373] the difference between the index of the pth subcarrier in the 52-tone DRU 5 and the index of the pth subcarrier in the 52-tone DRU 6 is greater than or equal to a second value;

[0374] the difference between the index of the pth subcarrier in the 52-tone DRU 5 and the index of the pth subcarrier in the 52-tone DRU 6 is greater than or equal to a second value;

[0375] the difference between the index of the pth subcarrier in the 52-tone DRU 5 and the index of the pth subcarrier in the 52-tone DRU 6 is greater than or equal to a second value;

[0376] the difference between the index of the pth subcarrier in the 52-tone DRU 5 and the index of the pth subcarrier in the 52-tone DRU 6 is greater than or equal to a second value.

[0377] For example, the second value can be equal to 3. p is an integer greater than or equal to 1 and less than or equal to 106.

[0378] As an example, there can be values of p such that the above difference is equal to 3.

[0379] As another example, there can be one or more values of p such that the above difference is greater than 3. As for two 52-tone DRUs distributed on both sides of the direct current region, i.e., two subcarrier groups distributed on both sides of the direct current region and belonging to different 52-tone DRUs, since the two subcarrier groups are distributed on both sides of the direct current region, it can cause the two subcarrier groups belonging to different 52-tone DRUs to satisfy the above characteristics. Taking the index of the direct current region as [-2:2] as an example, for 52-tone DRU 6 and 52-tone DRU 7, or for 52-tone DRU 10 and 52-tone DRU 11, p can be equal to 27. The values of p listed here are only examples and should not be construed as limiting the present application.

[0380] As a possible implementation, the indexes of the 52-tone DRUs corresponding to the first bandwidth can be designed independently in combination with the characteristics satisfied by the 52-tone DRUs described above and the first data pilot region and the second data pilot region.

[0381] As another possible implementation, the indexes of the 52-tone DRUs can be designed in combination with the indexes of the 484-tone DRUs shown in implementation one. For example, one 484-tone DRU can be split into 8 52-tone DRUs.

[0382] As yet another possible implementation, the indexes of the 52-tone DRUs can be designed in combination with the indexes of the 242-tone DRUs shown in implementation two. For example, one 242-tone DRU can be split into 4 52-tone DRUs.

[0383] As yet another possible implementation, the indexes of the 52-tone DRUs can be designed in combination with the indexes of the 106-tone DRUs shown in implementation three. For example, one 106-tone DRU can be split into 2 52-tone DRUs.

[0384] For example, for each 106-tone DRU, the first 104 subcarriers can be split, with the odd-numbered subcarriers as one 52-tone DRU and the even-numbered subcarriers as another 52-tone DRU. For example, the odd-numbered subcarriers (such as the 1st subcarrier, the 3rd subcarrier, the 5th subcarrier, and so on) of the first 104 subcarriers of 106-tone DRU 1 can be used as 52-tone DRU 1, and the even-numbered subcarriers (such as the 2nd subcarrier, the 4th subcarrier, the 6th subcarrier, and so on) of the first 104 subcarriers of 106-tone DRU 1 can be used as 52-tone DRU 9. For another example, the odd-numbered subcarriers of the first 104 subcarriers of the 106-tone DRU 2 can be used as the 52-tone DRU 2, and the even-numbered subcarriers of the first 104 subcarriers of the 106-tone DRU 2 can be used as the 52-tone DRU 10. The same can be deduced from the examples, which are not listed here one by one.

[0385] Of course, the method of splitting a 106-tone DRU to obtain a 52-tone DRU is not limited to this. For example, taking S=4 as an example, for each 106-tone DRU, the first and second subcarriers in the M subcarrier groups can be used as a 52-tone DRU, and the third and fourth subcarriers can be used as another 52-tone DRU. Alternatively, the first and fourth subcarriers in the M subcarrier groups can be used as a 52-tone DRU, and the second and third subcarriers can be used as another 52-tone DRU. The specific splitting method is not limited in this embodiment of the present application.

[0386] The following exemplifies the indexing of a 52-tone DRU.

[0387] As a possible implementation, the index of the first guard region is [-512:-501], the index of the DC region is [-2:2], and the index of the second guard region is [501:511]. The index of the first data pilot region is [-500:-3], and the index of the second data pilot region is [3:500].

[0388] For example, the index of 52-tone DRU 1 may be:

[0389] For example, the index of 52-tone DRU 2 may be:

[0390] For example, the index of 52-tone DRU 3 may be:

[0391] For example, the index of the 52-tone DRU 4 can be:

[0392] For example, the index of the 52-tone DRU 5 can be:

[0393] For example, the index of the 52-tone DRU 6 can be:

[0394] For example, the index of the 52-tone DRU 7 can be:

[0395] For example, the index of the 52-tone DRU 8 can be:

[0396] For example, the index of the 52-tone DRU 9 can be:

[0397] For example, the index of the 52-tone DRU 10 can be:

[0398] For example, the index of the 52-tone DRU 11 can be:

[0399] For example, the index of the 52-tone DRU 12 can be:

[0400] For example, the index of the 52-tone DRU 13 can be:

[0401] For example, the index of the 52-tone DRU 14 can be:

[0402] For example, the index of the 52-tone DRU 15 can be:

[0403] For example, the index of the 52-tone DRU 16 can be:

[0404] In the embodiments of the present application, for the 52-tone DRU, there can be at most one signal carried in any 13 continuous subcarriers, and thus the power amplification multiple of each subcarrier is 13, which reaches the maximum power amplification multiple that the 52-tone DRU can reach.

[0405] Implementation five,

[0406] For any one of the first data pilot region or the second data pilot region, the difference between the indexes of two adjacent subcarriers included in the 26-tone DRU is greater than a third value. In other words, the number of subcarriers between the two adjacent subcarriers is the third value.

[0407] For example, the difference between the indexes of the two adjacent subcarriers is equal to the third value + 1. The description of the third value can refer to the above-mentioned implementation three or implementation four, and will not be described here in detail. For example, the third value = 35.

[0408] The embodiment of the present application further provides a subcarrier planning corresponding to the first bandwidth, and the subcarrier planning corresponding to the first bandwidth can include a plurality of 26-tone DRUs, and the plurality of 26-tone DRUs can satisfy the above-mentioned features.

[0409] The subcarrier planning corresponding to the first bandwidth can include a first guard region, a first data pilot region, a direct current region, a second data pilot region and a second guard region. The description of each region can refer to the above-mentioned implementation one, and will not be described here in detail.

[0410] The plurality of 26-tone DRUs can be distributed in the first data pilot region and the second data pilot region. The number of the 26-tone DRUs can correspond to the first bandwidth. For example, the first bandwidth = 40 MHz, and the 40 MHz can correspond to 18 26-tone DRUs. The first bandwidth = 80 MHz, and the 80 MHz can correspond to 36 26-tone DRUs. For example, the first bandwidth = 160 MHz, and the 160 MHz can correspond to 72 26-tone DRUs. For example, the first bandwidth = 320 MHz, and the 320 MHz can correspond to 144 26-tone DRUs. The relationship between the first bandwidth and the number of 26-tone DRUs will not be listed one by one here.

[0411] The following takes the first bandwidth = 80 MHz as an example to describe the subcarrier planning provided by the embodiment of the present application.

[0412] As an example, the total number of subcarriers in the first data pilot region and the second data pilot region is 996. In other words, the total number of subcarriers in the first guard region, the direct current region and the second guard region is 1024-996=28. As another example, the first data pilot region and the second data pilot region can include null subcarriers. In other words, the total number of subcarriers in the first guard region, the direct current region and the second guard region can be less than 28. At this time, the total number of subcarriers in the first data pilot region and the second data pilot region is greater than 996, and therefore 26-tone DRU 1-26-tone DRU 32 can be distributed in the two data pilot regions with the total number of subcarriers greater than 996. The selection of the starting index of the 32 26-tone DRUs can be more. The description of 26-tone DRU 33-26-tone DRU 36 can refer to the above-mentioned implementation mode three, which will not be described in detail this time.

[0413] As a possible implementation mode, the index of the plurality of 26-tone DRUs corresponding to the first bandwidth can be designed independently in combination with the features satisfied by the above-mentioned 26-tone DRU and the first data pilot region and the second data pilot region.

[0414] As another possible implementation mode, the index of the 26-tone DRU can be designed in combination with the index of the 52-tone DRU shown in the implementation mode four. As one 52-tone DRU can be split into two 26-tone DRUs.

[0415] For example, for each 52-tone DRU, the odd-numbered subcarriers thereof can be taken as one 26-tone DRU, and the even-numbered subcarriers thereof can be taken as another 26-tone DRU. For example, the odd-numbered subcarriers (such as the first subcarrier, the third subcarrier, the fifth subcarrier, and so on) of 52-tone DRU 1 can be taken as one 26-tone DRU, and the even-numbered subcarriers (such as the second subcarrier, the fourth subcarrier, the sixth subcarrier, and so on) of 52-tone DRU 1 can be taken as another 26-tone DRU. For example, the odd-numbered subcarriers of 52-tone DRU 2 can be taken as one 26-tone DRU, and the even-numbered subcarriers of 52-tone DRU 2 can be taken as another 26-tone DRU. And so on, which will not be listed one by one here.

[0416] As yet another possible implementation, the indices for 26-tone DRUs can be designed in conjunction with the indices for 106-tone DRUs shown in implementation three. As yet another possible implementation, the indices for 26-tone DRUs can be designed in conjunction with the indices for 242-tone DRUs shown in implementation two. As yet another possible implementation, the indices for 26-tone DRUs can be designed in conjunction with the indices for 484-tone DRUs shown in implementation one. Regarding the relationship between DRUs of various sizes, further details are not provided here.

[0417] By way of example, the indices for 26-tone DRU 1 can be:

[0418] By way of example, the indices for 26-tone DRU 2 can be

[0419] By way of example, the indices for 26-tone DRU 3 can be

[0420] By way of example, the indices for 26-tone DRU 4 can be:

[0421] By way of example, the indices for 26-tone DRU 5 can be

[0422] By way of example, the indices for 26-tone DRU 6 can be

[0423] By way of example, the indices for 26-tone DRU 7 can be:

[0424] By way of example, the indices for 26-tone DRU 8 can be

[0425] By way of example, the indices for 26-tone DRU 9 can be

[0426] By way of example, the indices for 26-tone DRU 10 can be:

[0427] By way of example, the indices for 26-tone DRU 11 can be

[0428] By way of example, the indices for 26-tone DRU 12 can be

[0429] For example, the indices for 26-tone DRU 13 can be:

[0430] For example, the indices for 26-tone DRU 14 can be

[0431] For example, the indices for 26-tone DRU 15 can be

[0432] For example, the indices for 26-tone DRU 16 can be

[0433] For example, the indices for 26-tone DRU 17 can be:

[0434] For example, the indices for 26-tone DRU 18 can be

[0435] For example, the indices for 26-tone DRU 19 can be

[0436] For example, the indices for 26-tone DRU 20 can be:

[0437] For example, the indices for 26-tone DRU 21 can be:

[0438] For example, the indices for 26-tone DRU 22 can be

[0439] For example, the indices for 26-tone DRU 23 can be

[0440] For example, the indices for 26-tone DRU 24 can be:

[0441] For example, the indices for 26-tone DRU 25 can be

[0442] For example, the indices for 26-tone DRU 26 can be

[0443] For example, the indices for 26-tone DRU 27 can be:

[0444] For example, the index of the 26-tone DRU 28 can be

[0445] For example, the index of the 26-tone DRU 29 can be

[0446] For example, the index of the 26-tone DRU 30 can be

[0447] For example, the index of the 26-tone DRU 31 can be

[0448] For example, the index of the 26-tone DRU 32 can be

[0449] The repeated parts in the above implementation mode 1 to implementation mode 5 are not described in detail, and the part not described in detail in one implementation mode can be referred to the other implementation modes.

[0450] The pilot subcarriers in each DRU are described as follows.

[0451] For the 242-tone DRU 1 to the 242-tone DRU 4, each 242-tone DRU can include 8 pilot subcarriers. The 8 pilot subcarriers can satisfy at least one of the following conditions:

[0452] (1) Taking an example in which each of the M subcarrier groups included in the 242-tone DRU includes three subcarriers with consecutive indexes, the pilot subcarriers are included in the second subcarrier.

[0453] The pilot subcarriers are included in the second subcarrier, that is, the pilot subcarriers are located in the middle of the three subcarriers with consecutive indexes, and thus better channel smoothing gain can be obtained.

[0454] (2) The difference between the indexes of two adjacent pilot subcarriers is greater than a fifth value.

[0455] The interval between the two adjacent pilot subcarriers is greater than a certain value (i.e., the fifth value), which can ensure the diversity gain of phase offset estimation. The specific value of the fifth value is not limited here.

[0456] (3) Taking an example in which each of the M subcarrier groups included in the 106-tone DRU includes four subcarriers, and there are two subcarriers with consecutive indexes in the four subcarriers, the pilot subcarriers are included in the two subcarriers with consecutive indexes.

[0457] For example, the pilot subcarriers of the 106-tone DRU split by the 242-tone DRU can have one or more pilot subcarriers with the same index as the pilot subcarriers of the 242-tone DRU.

[0458] The following illustrates a design method of the pilot subcarriers of the 242-tone DRU and the 106-tone DRU.

[0459] Taking the 27 blocks shown in FIG. 6b and FIG. 6c as an example, 16 blocks can be selected from the 27 blocks for placing the pilot subcarriers, i.e., 2 pilot subcarriers can be included in each block. Since the 1st block and the 27th block include guard subcarriers, no pilot subcarriers can be placed in the 1st block and the 27th block. Since the 14th block includes a direct current subcarrier, to avoid pollution of carrier leakage, no pilot subcarriers can be placed in the 14th block. Thus, the pilot subcarriers can be placed in the 2nd block to the 13th block and the 15th block to the 26th block.

[0460] As an example, the pilot subcarriers are placed in the 10th block, the 11th block, the 12th block, the 13th block, the 15th block, the 16th block, the 17th block, the 18th block, the 19th block, the 20th block, the 21st block, the 22nd block, the 23rd block, the 24th block, the 25th block, and the 26th block. As shown in FIG. 6b, 9 subcarriers are included in each block for each 242-tone DRU.

[0461] For the 242-tone DRU 1, the 5th and the 8th subcarriers in the 10th block, the 15th block, the 19th block, and the 23rd block can be used as the pilot subcarriers. That is, the indexes of the pilot subcarriers of the 242-tone DRU 1 can be [-163, -151, 22, 34, 166, 178, 310, 322];

[0462] For the 242-tone DRU 2, the 5th and the 8th subcarriers in the 11th block, the 16th block, the 20th block, and the 24th block can be used as the pilot subcarriers. That is, the indexes of the pilot subcarriers of the 242-tone DRU 2 can be [-124, -112, 61, 73, 205, 217, 349, 361];

[0463] For the 242-tone DRU 3, the 5th and the 8th subcarriers in the 12th block, the 17th block, the 21st block, and the 25th block can be used as the pilot subcarriers. That is, the indexes of the pilot subcarriers of the 242-tone DRU can be [-85, -73, 100, 112, 244, 256, 388, 400];

[0464] For the 242-tone DRU 4, the 5th and 8th subcarriers in the 13th block, 18th block, 22nd block, and 26th block can be used as pilot subcarriers. That is, the indices of the pilot subcarriers of the 242-tone DRU 4 are [-46, -34, 139, 151, 283, 295, 427, 439].

[0465] As another example, pilot subcarriers are arranged in the 6th block, 7th block, 8th block, 9th block, 10th block, 11th block, 12th block, 13th block, 15th block, 16th block, 17th block, 18th block, 19th block, 20th block, 21st block, and 22nd block.

[0466] For the 242-tone DRU 1, the 5th and 8th subcarriers in the 6th block, 10th block, 15th block, and 19th block can be used as pilot subcarriers. That is, the indices of the pilot subcarriers of the 242-tone DRU 1 are [-307, -295, -163, -151, 22, 34, 166, 178].

[0467] For the 242-tone DRU 2, the 5th and 8th subcarriers in the 7th block, 11th block, 16th block, and 20th block can be used as pilot subcarriers. For the 242-tone DRU 3, the 5th and 8th subcarriers in the 8th block, 12th block, 17th block, and 21st block can be used as pilot subcarriers. For the 242-tone DRU 4, the 5th and 8th subcarriers in the 9th block, 13th block, 18th block, and 22nd block can be used as pilot subcarriers. For the specific indices, they are not listed one by one here.

[0468] The above exemplary illustrates the indices of the pilot subcarriers of each 242-tone DRU, and other indices of the pilot subcarriers can also be designed according to the design method shown above, which are not listed one by one here.

[0469] The indices of the pilot subcarriers of the 484-tone DRU 1 can be [-163, -151, -85, -73, 22, 34, 100, 112, 166, 178, 244, 256, 310, 388, 322, 400]. The indices of the pilot subcarriers of the 484-tone DRU 2 can be [-124, -112, -46, -34, 61, 73, 139, 151, 205, 217, 283, 295, 349, 361, 427, 439].

[0470] For 106-tone DRU 1 ~ 106-tone DRU 8, each 106-tone DRU can include 4 pilot subcarriers. As shown below:

[0471] As shown in FIG. 6b, for each of the 1st block to the 26th block, the 2nd, 5th, 6th, 9th subcarriers of each 242-tone DRU can be allocated to one 106-tone DRU, and the 3rd, 4th, 7th, 8th subcarriers are allocated to another 106-tone DRU.

[0472] For each of the 1st block to the 26th block, the 5th subcarrier of each 242-tone DRU can be the pilot subcarrier of the first 106-tone DRU. For each of the 1st block to the 26th block, the 8th subcarrier of each 242-tone DRU can be the pilot subcarrier of the second 106-tone DRU. That is, the pilot subcarrier index of the 106-tone DRU is the same as that of the 242-tone DRU, and can be split from the pilot subcarrier of the 242-tone DRU.

[0473] As an example, taking the 10th block, the 11th block, the 12th block, the 13th block, the 15th block, the 16th block, the 17th block, the 18th block, the 19th block, the 20th block, the 21st block, the 22nd block, the 23rd block, the 24th block, the 25th block, and the 26th block as an example, the pilot subcarriers of the 106-tone DRU can be as shown below:

[0474] For the first 106-tone DRU split from the 242-tone DRU 1 (106-tone DRU 1 as shown above), the 5th subcarrier in the 10th block, the 15th block, the 19th block, and the 23rd block corresponding to the 242-tone DRU 1 is the pilot subcarrier of the 106-tone DRU 1. That is, the index of the pilot subcarrier of the 106-tone DRU 1 can be [-163, 22, 166, 310]. For the second 106-tone DRU split from the 242-tone DRU 1 (106-tone 5 as shown above), the 8th subcarrier in the 10th block, the 15th block, the 19th block, and the 23rd block corresponding to the 242-tone DRU 1 is the pilot subcarrier of the 106-tone DRU 5. That is, the index of the pilot subcarrier of the 106-tone DRU 5 is [-151, 34, 178, 322].

[0475] For the first 106-tone DRU split from the 242-tone DRU 2 (106-tone DRU 2 as shown above), the 5th subcarriers in the 11th block, 16th block, 20th block, 24th block corresponding to the 242-tone DRU 2 are pilot subcarriers of the 106-tone DRU 2. That is, the indices of the pilot subcarriers of the 106-tone DRU 2 are [-124, 61, 205, 349]. For the second 106-tone DRU split from the 242-tone DRU 2 (106-tone DRU 6 as shown above), the 8th subcarriers in the 11th block, 16th block, 20th block, 24th block corresponding to the 242-tone DRU 2 are pilot subcarriers of the 106-tone DRU 6. That is, the indices of the pilot subcarriers of the 106-tone DRU 6 are [-112, 73, 217, 361].

[0476] For the first 106-tone DRU split from the 242-tone DRU 3 (106-tone DRU 3 as shown above), the 5th subcarriers in the 12th block, 17th block, 21st block, 25th block corresponding to the 242-tone DRU 3 are pilot subcarriers of the 106-tone DRU 3. That is, the indices of the pilot subcarriers of the 106-tone DRU 3 are [-85, 100, 244, 388]. For the second 106-tone DRU split from the 242-tone DRU 3 (106-tone DRU 7 as shown above), the 8th subcarriers in the 12th block, 17th block, 21st block, 25th block corresponding to the 242-tone DRU 3 are pilot subcarriers of the 106-tone DRU 7. That is, the indices of the pilot subcarriers of the 106-tone DRU 7 are [-73, 112, 256, 400].

[0477] For the first 106-tone DRU split from the 242-tone DRU 4 (106-tone DRU 4 as shown above), the 5th subcarriers in the 13th block, 18th block, 22nd block, 26th block corresponding to the 242-tone DRU 4 are pilot subcarriers for the 106-tone DRU 4. That is, the indices of the pilot subcarriers for the 106-tone DRU 4 are [-46, 139, 283, 427]. For the second 106-tone DRU split from the 242-tone DRU 4 (106-tone DRU 8 as shown above), the 8th subcarriers in the 13th block, 18th block, 22nd block, 26th block corresponding to the 242-tone DRU 4 are pilot subcarriers for the 106-tone DRU 8. That is, the indices of the pilot subcarriers for the 106-tone DRU 8 are [-34, 151, 295, 439].

[0478] As another example, in the case of setting pilot subcarriers in the 6th block, 7th block, 8th block, 9th block, 10th block, 11th block, 12th block, 13th block, 15th block, 16th block, 17th block, 18th block, 19th block, 20th block, 21st block, 22nd block, the pilot subcarriers of the 106-tone DRU can be as follows:

[0479] The 5th subcarrier in the 6th block, the 10th block, the 15th block, the 19th block corresponding to the 242-tone DRU 1 is taken as the pilot subcarrier of the 106-tone DRU 1. That is, the index of the pilot subcarrier of the 106-tone DRU 1 can be [-307, -163, 22, 166, ]. The 8th subcarrier in the 6th block, the 10th block, the 15th block, the 19th block corresponding to the 242-tone DRU 1 is taken as the pilot subcarrier of the 106-tone DRU 5. That is, the index of the pilot subcarrier of the 106-tone DRU 5 can be [-295, -151, 34, 178]. Similarly, the 5th subcarrier in the 7th block, the 11th block, the 16th block, the 20th block corresponding to the 242-tone DRU 2 is taken as the pilot subcarrier of the 106-tone DRU 2, and the 8th subcarrier in the 7th block, the 11th block, the 16th block, the 20th block corresponding to the 242-tone DRU 2 is taken as the pilot subcarrier of the 106-tone DRU 6. The 5th subcarrier in the 8th block, the 12th block, the 17th block, the 21st block corresponding to the 242-tone DRU 3 is taken as the pilot subcarrier of the 106-tone DRU 3, and the 8th subcarrier in the 8th block, the 12th block, the 17th block, the 21st block corresponding to the 242-tone DRU 3 is taken as the pilot subcarrier of the 106-tone DRU 7. The 5th subcarrier in the 9th block, the 13th block, the 18th block, the 22nd block corresponding to the 242-tone DRU 4 is taken as the pilot subcarrier of the 106-tone DRU 4, and the 8th subcarrier in the 9th block, the 13th block, the 18th block, the 22nd block corresponding to the 242-tone DRU 4 is taken as the pilot subcarrier of the 106-tone DRU 8. The specific index is not listed here.

[0480] For example, as shown in FIG. 6b, for each of the 1st block to the 26th block, the 2nd, 5th, 6th, 9th subcarriers of each 242-tone DRU can be allocated to one 106-tone DRU, and the 3rd, 4th, 7th, 8th subcarriers are allocated to another 106-tone DRU. For each 106-tone DRU, the first 104 subcarriers can be split, and the odd-numbered subcarriers are taken as a 52-tone DRU, and the even-numbered subcarriers are taken as another 52-tone DRU.

[0481] That is, for each of the 1st block to the 26th block, each 242-tone DRU can be split into 4 52-tone DRUs. The 2nd, 6th subcarriers of each 242-tone DRU can be allocated to the 1st 52-tone DRU, the 5th, 9th subcarriers of each 242-tone DRU can be allocated to the 2nd 52-tone DRU, the 3rd, 7th subcarriers of each 242-tone DRU can be allocated to the 3rd 52-tone DRU, and the 4th, 8th subcarriers of each 242-tone DRU can be allocated to the 4th 52-tone DRU.

[0482] For the 52-tone DRU 1 to the 52-tone DRU 16, each 52-tone DRU can include 4 pilot subcarriers. As shown below:

[0483] For each of the 1st to 26th blocks, the 2nd, 6th subcarriers of the 242-tone DRU 1 are allocated to the 1st 52-tone DRU (e.g., 52-tone DRU 1). The 2nd subcarriers in the 10th block, the 15th block, the 19th block, and the 23rd block corresponding to the 242-tone DRU 1 can be pilot subcarriers of the 1st 52-tone DRU. That is, the indices of the pilot subcarriers of the 52-tone DRU 1 can be [-175, 10, 154, 298].

[0484] For each of the 1st to 26th blocks, the 5th, 9th subcarriers of the 242-tone DRU 1 are allocated to the 2nd 52-tone DRU (e.g., 52-tone DRU 9 as shown above). The 5th subcarriers in the 10th block, the 15th block, the 19th block, and the 23rd block corresponding to the 242-tone DRU 1 can be pilot subcarriers of the 2nd 52-tone DRU. That is, the indices of the pilot subcarriers of the 52-tone DRU 9 can be [-163, 22, 166, 310].

[0485] For each of the 1st to 26th blocks, the 3rd, 7th subcarriers of the 242-tone DRU 1 are allocated to the 3rd 52-tone DRU (e.g., 52-tone DRU 5 as shown above). The 3rd, 7th subcarriers in the 4th block, the 8th block corresponding to the 242-tone DRU 1 can be pilot subcarriers of the 3rd 52-tone DRU. That is, the indices of the pilot subcarriers of the 52-tone DRU 5 can be [-390, -368, -246, -224].

[0486] For each of the 1stto 26thblocks, the 4th, 8thsubcarriers of the 242-tone DRU 1 are allocated to the fourth 52-tone DRU (52-tone DRU 13 as shown above). The 8thsubcarriers in the 10th, 15th, 19th, 23rdblocks corresponding to the 242-tone DRU 1 are the pilot subcarriers of the fourth 52-tone DRU. That is, the indices of the pilot subcarriers of the 52-tone DRU 13 can be [-151, 34, 178, 322].

[0487] For each of the 1stto 26thblocks, the 2nd, 6thsubcarriers of the 242-tone DRU 2 are allocated to the first 52-tone DRU (52-tone DRU 2 as shown above). The 2ndsubcarriers in the 11thblock, 16thblock, 20thblock, 24thblock corresponding to the 242-tone DRU 2 are the pilot subcarriers of the first 52-tone DRU. That is, the indices of the pilot subcarriers of the 52-tone DRU 2 can be [-136, 49, 193, 337].

[0488] For each of the 1stto 26thblocks, the 5th, 9thsubcarriers of the 242-tone DRU 2 are allocated to the second 52-tone DRU (52-tone DRU 10 as shown above). The 5thsubcarriers in the 11thblock, 16thblock, 20thblock, 24thblock corresponding to the 242-tone DRU 2 are the pilot subcarriers of the second 52-tone DRU. That is, the indices of the pilot subcarriers of the 52-tone DRU 10 can be [-124, 61, 205, 349].

[0489] For each of the 1stto 26thblocks, the 3rd, 7thsubcarriers of the 242-tone DRU 2 are allocated to the third 52-tone DRU (52-tone DRU 6 as shown above). The 3rd, 7thsubcarriers in the 3rdblock, 7thblock corresponding to the 242-tone DRU 2 are the pilot subcarriers of the third 52-tone DRU. That is, the indices of the pilot subcarriers of the 52-tone DRU 6 can be [-423, -401, -279, -257].

[0490] For each of the 1stto 26thblocks, the 4th, 8thsubcarriers of the 242-tone DRU 2 are allocated to a fourth 52-tone DRU (52-tone DRU 14 as shown above). The 8thsubcarriers in the 11th, 16th, 20th, 24thblocks corresponding to the 242-tone DRU 2 are pilot subcarriers for the fourth 52-tone DRU. That is, the indices of the pilot subcarriers for the 52-tone DRU 14 can be [-112, 73, 217, 361].

[0491] For each of the 1stto 26thblocks, the 2nd, 6thsubcarriers of the 242-tone DRU 3 are allocated to a first 52-tone DRU (52-tone DRU 3 as shown above). The 2ndsubcarriers in the 12th, 17th, 21st, 25thblocks corresponding to the 242-tone DRU 3 are pilot subcarriers for the first 52-tone DRU. That is, the indices of the pilot subcarriers for the 52-tone DRU 3 can be [-97, 88, 232, 376].

[0492] For each of the 1stto 26thblocks, the 5th, 9thsubcarriers of the 242-tone DRU 3 are allocated to a second 52-tone DRU (52-tone DRU 3 as shown above). The 5thsubcarriers in the 12th, 17th, 21st, 25thblocks corresponding to the 242-tone DRU 3 are pilot subcarriers for the second 52-tone DRU. That is, the indices of the pilot subcarriers for the 52-tone DRU 3 can be [-85, 100, 244, 388].

[0493] For each of the 1stto 26thblocks, the 3rd, 7thsubcarriers of the 242-tone DRU 3 are allocated to a third 52-tone DRU (52-tone DRU 7 as shown above). The 3rd, 7thsubcarriers in the 2nd, 6thblocks corresponding to the 242-tone DRU 3 are pilot subcarriers for the third 52-tone DRU. That is, the indices of the pilot subcarriers for the 52-tone DRU 7 can be [-492, -470, -348, -326].

[0494] For each of the 1stto 26thblocks, the 4th, 8thsubcarriers of the 242-tone DRU 3 are allocated to a fourth 52-tone DRU (52-tone DRU 15 as shown above). The 8thsubcarriers in the 12th, 17th, 21st, 25thblocks corresponding to the 242-tone DRU 3 are pilot subcarriers of the fourth 52-tone DRU. That is, the indices of the pilot subcarriers of the 52-tone DRU 15 can be [-73, 112, 256, 400].

[0495] For each of the 1stto 26thblocks, the 2nd, 6thsubcarriers of the 242-tone DRU 4 are allocated to a first 52-tone DRU (52-tone DRU 4 as shown above). The 2ndsubcarriers in the 13th, 18th, 22nd, 26thblocks corresponding to the 242-tone DRU 4 are pilot subcarriers of the first 52-tone DRU. That is, the indices of the pilot subcarriers of the 52-tone DRU 4 can be [-58, 127, 271, 415].

[0496] For each of the 1stto 26thblocks, the 5th, 9thsubcarriers of the 242-tone DRU 4 are allocated to a second 52-tone DRU (52-tone DRU 12 as shown above). The 5thsubcarriers in the 13th, 18th, 22nd, 26thblocks corresponding to the 242-tone DRU 4 are pilot subcarriers of the second 52-tone DRU. That is, the indices of the pilot subcarriers of the 52-tone DRU 12 can be [-46, 139, 283, 427].

[0497] For each of the 1stto 26thblocks, the 3rd, 7thsubcarriers of the 242-tone DRU 4 are allocated to a third 52-tone DRU (52-tone DRU 8 as shown above). The 3rd, 7thsubcarriers in the 1st, 5thblocks corresponding to the 242-tone DRU 4 are pilot subcarriers of the third 52-tone DRU. That is, the indices of the pilot subcarriers of the 52-tone DRU 8 can be [-489, -467, -345, -323].

[0498] For each of the 1st to 26th blocks, the 4th and 8th subcarriers of the 242-tone DRU 4 are allocated to the fourth 52-tone DRU (the 52-tone DRU 16 shown above). The 8th subcarrier in the 13th block, the 18th block, the 22nd block, and the 26th block corresponding to the 242-tone DRU 4 is used as a pilot subcarrier of the fourth 52-tone DRU. That is, the indexes of the pilot subcarriers of the 52-tone DRU 16 can be [-34, 151, 295, 439].

[0499] The communication apparatus provided by the embodiments of the present application will be described below.

[0500] The present application divides the functional modules of the communication apparatus according to the above-mentioned method embodiments. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above-mentioned integrated module can be realized in the form of hardware or in the form of a software functional module. It should be noted that the division of the modules in the present application is illustrative, and is only a logical functional division. In actual implementation, another division manner can be used. The communication apparatus of the embodiments of the present application will be described in detail below with reference to FIGS. 7 to 9.

[0501] FIG. 7 is a structural schematic diagram of a communication apparatus provided by an embodiment of the present application. As shown in FIG. 7, the communication apparatus includes a processing module 701 and a transceiver module 702. The transceiver module 702 can realize corresponding communication functions, and the processing module 701 is configured to realize corresponding processing functions. The transceiver module 702 can also be referred to as an interface, a communication interface, or a communication module, etc.

[0502] In some embodiments of the present application, the communication apparatus can be used to perform the actions performed by the first communication apparatus in the above-mentioned method embodiments. At this time, the first communication apparatus can be a Wi-Fi device itself or a chip or a functional module configured in the device, etc. The transceiver module 702 is configured to perform the transceiver-related operations of the first communication apparatus in the above-mentioned method embodiments, and the processing module 701 is configured to perform the processing-related operations of the first communication apparatus in the above-mentioned method embodiments.

[0503] The processing module 701 can be configured to generate an OFDM symbol, and the transceiver module 702 can be configured to transmit or output the OFDM symbol on a target DRU. The subcarrier index of the target DRU can be referred to the above.

[0504] Exemplarily, the processing module 701 can include at least one of the following modules: constellation mapping module, stream-cyclic shift module, space and frequency mapping module, IDFT module, cyclic prefix insertion and windowing module. Exemplarily, the transceiver module 702 can include a radio frequency module, an antenna module, etc. Exemplarily, the transceiver module 702 can include a pin module, etc.

[0505] In another embodiment of the present application, the communication apparatus can be configured to perform the actions performed by the second communication apparatus in the above method embodiments. In this case, the communication apparatus can be a Wi-Fi device itself or a chip or functional module configured in the device, etc. The transceiver module 702 is configured to perform the transceiving related operations of the second communication apparatus in the above method embodiments, and the processing module 701 is configured to perform the processing related operations of the second communication apparatus in the above method embodiments.

[0506] The transceiver module 702 can be configured to receive or input the OFDM symbol on the target DRU, and the processing module 701 can be configured to parse the OFDM symbol.

[0507] Exemplarily, the processing module 701 can include at least one of the following components: cyclic prefix removal module, DFT module, de-interleaving module, de-constellation module, de-scrambling module. Exemplarily, the transceiver module 702 can include a radio frequency module, an antenna module, etc. Exemplarily, the transceiver module 702 can include a pin module, etc.

[0508] Optionally, in each of the above embodiments, the communication apparatus can further include a storage module, which can be configured to store instructions and / or data. The processing module 701 can read the instructions and / or data in the storage module, so that the communication apparatus implements the above method embodiments. Exemplarily, the storage module can store the subcarrier planning shown above, etc.

[0509] In each of the above embodiments, the specific description of each term or name or step can refer to the description in the above method embodiments, which will not be repeated here.

[0510] The specific description of the transceiver module and the processing module in each of the above embodiments is only an example. For the specific functions or steps performed by the transceiver module and the processing module, etc., please refer to the above method embodiments, which will not be described here.

[0511] The above introduces the communication apparatus of the embodiments of the present application. The following introduces the possible product forms of the communication apparatus. Any form of product that has the functions of the communication apparatus shown in FIG. 7 falls within the protection scope of the embodiments of the present application. The following introduction is only an example, which does not limit the product form of the communication apparatus of the embodiments of the present application.

[0512] In a possible implementation, in the communication apparatus shown in FIG. 7, the processing module 701 can be one or more processors, and the transceiver module 702 can be a transceiver, or the transceiver module 702 can also be a sending module and a receiving module, the sending module can be a transmitter, and the receiving module can be a receiver, and the sending module and the receiving module are integrated in one device, for example, a transceiver. In the embodiments of the present application, the processor and the transceiver can be coupled, and the connection manner of the processor and the transceiver is not limited in the embodiments of the present application. In the process of executing the above method, the process of sending information in the above method can be the process of outputting the above information by the processor. When the above information is output, the processor outputs the above information to the transceiver, so that the transceiver transmits. After the above information is output by the processor, it can also need to be processed further, and then reach the transceiver. Similarly, the process of receiving information in the above method can be the process of receiving the input above information by the processor. When the processor receives the input information, the transceiver receives the above information and inputs it to the processor. Furthermore, after the transceiver receives the above information, the above information can need to be processed further, and then input to the processor.

[0513] As shown in FIG. 8, the communication apparatus 80 includes one or more processors 820 and a transceiver 810.

[0514] In some embodiments of the present application, the communication apparatus can be used to execute the steps or methods or functions executed by the first communication apparatus, for example, the processor 820 can be used to execute the functions or steps implemented by the processing module 701 shown in FIG. 7, and the transceiver 810 can be used to execute the functions or steps implemented by the transceiver module 702 shown in FIG. 7. For specific description of the processor 820 and the transceiver 810, reference can be made to FIG. 7 or the method embodiments shown above, which will not be described in detail here.

[0515] In some embodiments of the present application, the communication apparatus can be used to execute the steps or methods or functions executed by the first communication apparatus, for example, the processor 820 can be used to execute the functions or steps implemented by the processing module 701 shown in FIG. 7, and the transceiver 810 can be used to execute the functions or steps implemented by the transceiver module 702 shown in FIG. 7. For specific description of the processor 820 and the transceiver 810, reference can be made to FIG. 7 or the method embodiments shown above, which will not be described in detail here.

[0516] In each implementation of the communication apparatus shown in FIG. 8, the transceiver can include a receiver and a transmitter, the receiver is configured to perform the function (or operation) of receiving, and the transmitter is configured to perform the function (or operation) of transmitting. And the transceiver is configured to communicate with other devices / apparatuses through a transmission medium.

[0517] Optionally, the communication device 80 can further include one or more memories 830 for storing program instructions and / or data. The memory 830 is coupled to the processor 820. The coupling between the various components in the embodiments of the present application can be indirect coupling or communication connection between the communication devices, units or modules, which can be electrical, mechanical or other form, for information interaction between the communication devices, units or modules. The processor 820 can operate in cooperation with the memory 830. The processor 820 can execute the program instructions stored in the memory 830. Optionally, at least one of the one or more memories can be included in the processor.

[0518] The specific connection medium between the transceiver 810, the processor 820 and the memory 830 in the embodiments of the present application is not limited. In FIG. 8, the memory 830, the processor 820 and the transceiver 810 are connected through the bus 840, and the bus is represented by a thick line in FIG. 8. The connection mode between other components is only schematically illustrated and is not limited. The bus can be divided into an address bus, a data bus, a control bus, etc. For convenience of representation, only one thick line is used in FIG. 8, but it does not mean that there is only one bus or only one type of bus.

[0519] In the embodiments of the present application, the processor can be a general processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc., which can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application. The general processor can be a microprocessor or any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as execution completed by a hardware processor, or executed by a combination of hardware and software modules in the processor, etc.

[0520] The memory in the embodiments of the present application can include, but is not limited to, a non-volatile memory such as a hard disk drive (HDD) or a solid-state drive (SSD), a random access memory (RAM), an erasable programmable ROM (EPROM), a read-only memory (ROM), a compact disc read-only memory (CD-ROM), and the like. The memory is any storage medium that can be used to carry or store program codes in the form of instructions or data structures and can be read and / or written by a computer (such as the communication device shown in the present application and the like). The memory in the embodiments of the present application can also be a circuit or any other device capable of realizing a storage function, used for storing program instructions and / or data.

[0521] The processor 820 is mainly used for processing communication protocols and communication data, controlling the whole communication device, executing software programs, and processing data of the software programs. The memory 830 is mainly used for storing software programs and data. The transceiver 810 can include a control circuit and an antenna, and the control circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. The input and output device, such as a touch screen, a display screen, a keyboard, and the like, is mainly used for receiving user input data and outputting data to the user.

[0522] When the communication device is powered on, the processor 820 can read the software program in the memory 830, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be transmitted wirelessly, the processor 820 performs baseband processing on the data to be transmitted, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit converts the baseband signal into a radio frequency signal, and transmits the radio frequency signal in the form of electromagnetic waves through the antenna. When data is transmitted to the communication device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 820. The processor 820 converts the baseband signal into data and processes the data.

[0523] In another implementation, the radio frequency circuit and the antenna can be arranged independently of the processor performing baseband processing, for example, in a distributed scenario, the radio frequency circuit and the antenna can be arranged remotely from the communication device.

[0524] The communication apparatus shown in the embodiments of the present application can also have more components than those shown in FIG. 8, and the embodiments of the present application do not limit this. The method performed by the processor and the transceiver shown above is only an example, and the steps actually performed by the processor and the transceiver can refer to the method described above.

[0525] In another possible implementation, in the communication apparatus shown in FIG. 7, the processing module 701 can be one or more logic circuits, and the transceiving module 702 can be an input / output interface, also referred to as a communication interface, or an interface circuit, or an interface, etc. Alternatively, the transceiving module 702 can also be a sending module and a receiving module, the sending module can be an output interface, and the receiving module can be an input interface, and the sending module and the receiving module are integrated in one module, for example, an input / output interface. As shown in FIG. 9, the communication apparatus shown in FIG. 9 includes a logic circuit 901 and an interface 902. That is, the processing module 701 described above can be implemented by the logic circuit 901, and the transceiving module 702 can be implemented by the interface 902. The logic circuit 901 can be a chip, a processing circuit, an integrated circuit, or a system on chip (SoC) chip, etc., and the interface 902 can be a communication interface, an input / output interface, a pin, etc. For example, FIG. 9 is a chip including the logic circuit 901 and the interface 902, which is shown by taking the communication apparatus described above as an example.

[0526] In the embodiments of the present application, the logic circuit and the interface can also be coupled to each other. The embodiments of the present application do not limit the specific connection mode of the logic circuit and the interface. For example, the logic circuit 901 can be used to perform the functions or steps implemented by the processing module 701 shown in FIG. 7, and the interface 902 can be used to perform the functions or steps implemented by the transceiving module 702 shown in FIG. 7. For specific description of the logic circuit 901 and the interface 902, refer to the method embodiments shown in FIG. 7 or the above description, which will not be described in detail here.

[0527] The communication apparatus shown in the embodiments of the present application can implement the method provided by the embodiments of the present application in the form of hardware, or implement the method provided by the embodiments of the present application in the form of software, etc., and the embodiments of the present application do not limit this.

[0528] In addition, the embodiments of the present application also provide a communication system, which includes a first communication apparatus and a second communication apparatus, and the first communication apparatus and the second communication apparatus can be used to perform the method in any of the preceding embodiments.

[0529] The present application also provides a computer program for implementing the operations and / or processes performed by each communication apparatus in the method provided by the present application.

[0530] The application further provides a computer readable storage medium, wherein computer code is stored in the computer readable storage medium, and when the computer code is run on a computer, the computer code causes the computer to perform operations and / or processes performed by each communication device in the method provided by the application.

[0531] The application further provides a computer program product, which comprises computer code or a computer program, and when the computer code or the computer program is run on a computer, operations and / or processes performed by each in the method provided by the application are performed.

[0532] In several embodiments provided by the application, it should be understood that the disclosed system, communication device and method can be implemented in other manners. For example, the embodiments of the communication device described above are merely schematic; for example, the division of the modules is merely a logical function division; an actual implementation can be another division manner; for example, a plurality of modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between different modules can be indirect couplings or communication connections through some interfaces, communication devices or modules, and can be electric, mechanical or in other forms.

[0533] The modules described as separated components can or can not be physically separated, and the components displayed as modules can or can not be physical modules, i.e., can be located in one place, or can be distributed on a plurality of network modules. According to actual needs, some or all of the modules can be selected to achieve the technical effects of the scheme provided by the embodiments of the application.

[0534] In addition, each functional module in the embodiments of the application can be integrated in one processing module, or each module can exist physically independently, or two or more modules can be integrated in one module. The integrated module can be implemented in the form of hardware, or in the form of software function module.

[0535] The integrated module, if implemented in the form of a software function module and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such an understanding, the technical solutions of the present application essentially or say the part that contributes to the prior art, or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a readable storage medium, including a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in various embodiments of the present application. The aforementioned readable storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0536] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: The method comprises: transmitting or receiving an orthogonal frequency division multiplexing (OFDM) symbol on a target distributed resource unit (DRU); the target DRU is distributed in a first data pilot region and a second data pilot region in a subcarrier plan; for the target DRU, the first data pilot region comprises M1 subcarrier groups, and the second data pilot region comprises M2 subcarrier groups, where M1 and M2 are positive integers; each of the M1 subcarrier groups comprises at least two subcarriers with consecutive indices, and the indices of two adjacent subcarrier groups in the M1 subcarrier groups are not consecutive; each of the M2 subcarrier groups comprises at least two subcarriers with consecutive indices, and the indices of two adjacent subcarrier groups in the M2 subcarrier groups are not consecutive.

2. The method of claim 1, wherein each of the M1 subcarrier groups comprises a first subcarrier, a second subcarrier, and a third subcarrier with consecutive indices, and the second subcarrier is located between the first subcarrier and the third subcarrier; or each of the M2 subcarrier groups comprises a first subcarrier, a second subcarrier, and a third subcarrier with consecutive indices, and the second subcarrier is located between the first subcarrier and the third subcarrier.

3. The method of claim 1 or 2, wherein two adjacent subcarrier groups in the M1 subcarrier groups comprise a first subcarrier group and a second subcarrier group, and the number of subcarriers spaced between the first subcarrier group and the second subcarrier group is greater than or equal to 3; or two adjacent subcarrier groups in the M2 subcarrier groups comprise a first subcarrier group and a second subcarrier group, and the number of subcarriers spaced between the first subcarrier group and the second subcarrier group is greater than or equal to 3.

4. The method of claim 3, wherein, The target DRU comprises 484 subcarriers, and the number of subcarriers spaced between the first subcarrier group and the second subcarrier group is equal to 3.

5. The method of claim 4, wherein, The target DRU is a 484-tone DRU 1 or a 484-tone DRU 2, and the difference between the index of the pth subcarrier in the 484-tone DRU 1 and the index of the pth subcarrier in the 484-tone DRU 2 is equal to 3.

6. The method of claim 3, wherein, The target DRU comprises 242 subcarriers, and the number of subcarriers spaced between the first subcarrier group and the second subcarrier group is equal to 9.

7. The method of claim 6, wherein, The target DRU is any one of a 242-tone DRU 1, a 242-tone DRU 2, a 242-tone DRU 3, or a 242-tone DRU 4; wherein the 242-tone DRU 1 to the 242-tone DRU 4 satisfy at least one of the following: the difference between the index of the pth subcarrier in the 242-tone DRU 1 and the index of the pth subcarrier in the 242-tone DRU 2 is greater than or equal to 3; and / or the difference between the index of the pth subcarrier in the 242-tone DRU 2 and the index of the pth subcarrier in the 242-tone DRU 3 is greater than or equal to 3; and / or the difference between the index of the pth subcarrier in the 242-tone DRU 3 and the index of the pth subcarrier in the 242-tone DRU 4 is greater than or equal to 3. a difference between an index of a pth subcarrier in the 242-tone DRU 2 and an index of a pth subcarrier in the 242-tone DRU 3 is greater than or equal to 3; a difference between an index of a pth subcarrier in the 242-tone DRU 3 and an index of a pth subcarrier in the 242-tone DRU 4 is greater than or equal to 3.

8. The method of claim 1, wherein, each of the M1 subcarrier groups comprises a first subcarrier, a second subcarrier, a third subcarrier and a fourth subcarrier, the second subcarrier is located between the first subcarrier and the third subcarrier, and the third subcarrier is located between the second subcarrier and the fourth subcarrier; wherein an index of the second subcarrier is continuous with an index of the third subcarrier, or an index of the third subcarrier is continuous with an index of the fourth subcarrier.

9. The method of claim 1, wherein, each of the M2 subcarrier groups comprises a first subcarrier, a second subcarrier, a third subcarrier and a fourth subcarrier, the second subcarrier is located between the first subcarrier and the third subcarrier, and the third subcarrier is located between the second subcarrier and the fourth subcarrier; wherein an index of the second subcarrier is continuous with an index of the third subcarrier, or an index of the third subcarrier is continuous with an index of the fourth subcarrier.

10. The method according to claim 8 or 9, characterized in that, the target DRU comprises 106 subcarriers, and a number of subcarriers spaced between the first subcarrier group and the second subcarrier group is 10 or 12.

11. The method according to any one of claims 8-10, characterized in that, the target DRU is any one of the following: 106-tone DRU 1, 106-tone DRU 2, 106-tone DRU 3, 106-tone DRU 4, 106-tone DRU 5, 106-tone DRU 6, 106-tone DRU 7, 106-tone DRU 8; the 106-tone DRU 1 to the 106-tone DRU 8 satisfy at least one of the following: a difference between an index of a pth subcarrier in the 106-tone DRU 1 and an index of a pth subcarrier in the 106-tone DRU 2 is greater than or equal to 3; a difference between an index of a pth subcarrier in the 106-tone DRU 2 and an index of a pth subcarrier in the 106-tone DRU 3 is greater than or equal to 3; a difference between an index of a pth subcarrier in the 106-tone DRU 3 and an index of a pth subcarrier in the 106-tone DRU 4 is greater than or equal to 3; a difference between an index of a pth subcarrier in the 106-tone DRU 5 and an index of a pth subcarrier in the 106-tone DRU 6 is greater than or equal to 3; The difference between the index of the pth subcarrier in the 106-tone DRU 6 and the index of the pth subcarrier in the 106-tone DRU 7 is greater than or equal to 3. The difference between the index of the pth subcarrier in the 106-tone DRU 7 and the index of the pth subcarrier in the 106-tone DRU 8 is greater than or equal to 3.

12. The method according to any one of claims 1 to 11, characterized in that, The second data pilot region further includes N single subcarriers, N being an integer greater than or equal to 2.

13. The method according to any one of claims 2-7, characterized in that, The second data pilot region further includes N single subcarriers, and there are 2 single subcarriers in the N single subcarriers whose indexes are continuous.

14. The method of claim 6 or 7, wherein, The target DRU includes 8 pilot subcarriers, and the 8 pilot subcarriers are included in the second subcarriers.

15. The method of claim 14, wherein, There are 2 adjacent pilot subcarriers in the 8 pilot subcarriers, and the 2 adjacent pilot subcarriers are included in the second subcarriers in two adjacent subcarrier groups.

16. The method according to claim 14 or 15, characterized in that The indexes of the 8 pilot subcarriers are as follows: [-163，-151，22，34，166，178，310，322]； [-124，-112，61，73，205，217，349，361]； [-85，-73，100，112，244，256，388，400]； [-46，-34，139，151，283，295，427，439]。 17. The method according to any one of claims 8-11, characterized by, The target DRU includes 4 pilot subcarriers, and the 4 pilot subcarriers are included in the second subcarriers or the fourth subcarriers.

18. The method of claim 17, wherein, The 4 pilot subcarriers are as follows: [-163，22，166，310]； [-124，61，205，349]； [-85，100，244，388]； [-46，139，283，427] [-151，34，178，322]； [-112，73，217，361]； [-73，112，256，400]； [-34，151，295，439]。 19. The method according to any one of claims 1 to 18, characterized in that, The subcarrier planning further includes a direct current region, and the direct current region is located between the first data pilot region and the second data pilot region.

20. A communications device, characterized by The apparatus comprises means for performing the method of any one of claims 1 to 19.

21. A communications device, characterized by The apparatus comprises a processor configured to perform the method of any one of claims 1 to 19.

22. A communications device, characterized by The apparatus comprises a logic circuit and an interface, and the logic circuit and the interface are coupled. The interface is configured to input and / or output information, and the logic circuit is configured to perform the method of any one of claims 1 to 19.

23. A computer-readable storage medium, characterized in that, The computer readable storage medium is configured to store a computer program, and the computer program is configured to perform the method of any one of claims 1 to 19 when executed.

24. A computer program product, characterised in that, The computer program product is configured to perform the method of any one of claims 1 to 19 when executed.

Images