Method and apparatus for communicating using distributed tone resource units

Abstract

Various schemes related to tone alignment of distributed resource units (dRUs) in a 6 GHz low-power indoor (LPI) system are described. Communicating entities allocate subcarriers of resource units (RUs) across a bandwidth to generate tone-aligned dRUs. The communicating entities then use the dRUs for wireless communication in the 6 GHz LPI system.

Description

Technical Field

[0001] The present invention relates generally to wireless communications, and more particularly to tone alignment of distributed-tone resource units (dRUs) in a 6 GHz low-power indoor (LPI) system. Background Art

[0002] Unless otherwise indicated herein, the approaches described in this section are not prior art to the claims listed below and are not admitted to be prior art by inclusion in this section.

[0003] Under the Federal Communications Commission (FCC)'s current regulations for wireless communications in the 2.4 GHz and 5 GHz bands, the equivalent isotropically radiated power (EIRP) for power spectral density (PSD) limits is capped at 20 dBm for 2 MHz transmissions, and the transmit (Tx) power limit is capped at 30 dBm. Under reasonable Tx power assumptions, FCC regulations do not limit Tx power for narrow-bandwidth transmissions. On the other hand, the FCC's requirements for 6 GHz LPI applications are far more stringent than the PSD requirements for the 2.4 GHz and 5 GHz bands. For example, for access point (AP) STAs in the 6 GHz LPI, the EIRP limit is 5 dBm / MHz, while for AP STAs in the 5 GHz band, the EIRP limit is 17 dBm / MHz. Similarly, for non-AP STAs in the 6 GHz LPI, the EIRP limit is -1 dBm / MHz, while for non-AP STAs in the 5 GHz band, the EIRP limit is 11 dBm / MHz. Because distributed tone resource units (RUs) or dRUs (interchangeably referred to herein as "interleaved RUs" and "interleaved tone RUs") can have different sizes in different bandwidths, how the subcarriers of a given RU are distributed across the bandwidth to improve Tx power in a 6 GHz LPI system remains to be defined. Therefore, a solution for tone alignment for dRUs is needed in a 6 GHz LPI system. Summary of the Invention

[0004] The following summary is illustrative only and is not intended to be limiting in any way. That is, the following summary is provided to introduce the concepts, highlights, benefits, and advantages of the novel and non-obvious technologies described herein. Selected implementations are further described below in the detailed description. Therefore, the following summary is not intended to identify essential features of the claimed subject matter, nor is it intended to be used to determine the scope of the claimed subject matter.

[0005] An object of the present invention is to provide solutions, concepts, designs, techniques, methods and apparatuses related to tone alignment of dRUs in a 6 GHz LPI system. The present invention proposes multiple options and methods for tone alignment of dRUs in a wider bandwidth.

[0006] In one aspect, a method may involve distributing subcarriers of a RU across a bandwidth to generate a dRU with tone alignment. The method may also involve using the dRU for wireless communication.

[0007] In another aspect, an apparatus may include a transceiver and a processor coupled to the transceiver. The transceiver may be configured to transmit and receive wirelessly. The processor may be configured to distribute subcarriers of a RU across a bandwidth to generate a tone-aligned DRU. The processor may also be configured to perform wireless communication using the DRU.

[0008] Optionally, the tone-aligned dRU is generated using multiple indices of the dRU, wherein the distribution of the multiple indices is edge-tone aligned and asymmetric with respect to a DC tone located at the center of the multiple tone distributions of the dRU. In some embodiments, the edge-tone aligned distribution of the multiple indices may mean that the index of the leftmost edge tone or the index of the rightmost edge tone of the dRU is the same as or differs by a predetermined value from the index of a given left edge tone or the index of a given right edge tone.

[0009] Optionally, the tone-aligned dRU is generated using multiple indices of the dRU, the distribution of the multiple indices being center-aligned and asymmetric with respect to a DC tone located at the center of the multiple tone distributions of the dRU. In some embodiments, the distribution of the multiple indices being center-aligned may mean that the index of the rightmost tone of the left portion (or lower portion) of the dRU is the same as or differs by a predetermined value from the index of the left DC tone at a given center, or / and, the index of the leftmost tone of the right portion (or upper portion) of the dRU is the same as or differs by a predetermined value from the index of the right DC tone at a given center.

[0010] By using the wireless communication method and communication device of the embodiments of the present application, wireless communication using dRU can be achieved.

[0011] It is worth noting that although the description provided herein may be in the context of certain radio access technologies, networks, and network topologies (e.g., Wi-Fi), the concepts, solutions, and any variants / derivatives presented may be implemented in and for other types of radio access technologies, networks, and network topologies, such as, but not limited to, Bluetooth, ZigBee, 5th Generation (5G) / New Radio (NR), Long-Term Evolution (LTE), LTE-Advanced, LTE-Advanced Pro, Internet of Things (IoT), Industrial Internet of Things (IIoT), and Narrowband IoT (NB-IoT). Therefore, the scope of the present invention is not limited to the examples described herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are included to provide a further understanding of the present invention and are incorporated into and constitute a part of this specification. The accompanying drawings illustrate embodiments of the present invention and, together with the detailed description, serve to explain the principles of the present invention. It will be understood that the drawings are not necessarily drawn to scale to clearly illustrate the concepts of the present invention, as some components may be shown out of proportion to their actual dimensions.

[0013] Figure 1 is a schematic diagram of an example network environment in which various solutions and schemes according to the present invention may be implemented.

[0014] Figure 2 is a schematic diagram of an example design according to an embodiment of the present invention.

[0015] Figure 3 is a schematic diagram of an example scenario according to an embodiment of the present invention.

[0016] Figure 4 is a schematic diagram of an example design according to an embodiment of the present invention.

[0017] Figure 5 is a schematic diagram of an example design according to an embodiment of the present invention.

[0018] Figure 6 is a schematic diagram of an example design according to an embodiment of the present invention.

[0019] Figure 7 is a schematic diagram of an example scenario according to an embodiment of the present invention.

[0020] Figure 8 is a schematic diagram of an example design according to an embodiment of the present invention.

[0021] Figure 9 is a schematic diagram of an example design according to an embodiment of the present invention.

[0022] Figure 10 is a schematic diagram of an example design according to an embodiment of the present invention.

[0023] Figure 11 is a schematic diagram of an example design according to an embodiment of the present invention.

[0024] Figure 12 is a schematic diagram of an example design according to an embodiment of the present invention.

[0025] Figure 13 is a schematic diagram of an example design according to an embodiment of the present invention.

[0026] Figure 14 is a schematic diagram of an example design according to an embodiment of the present invention.

[0027] Figure 15 is a schematic diagram of an example design according to an embodiment of the present invention.

[0028] Figure 16 is a block diagram of an example communication system according to an embodiment of the present invention.

[0029] Figure 17 is a flow chart of an example process according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] Detailed embodiments and implementations of the claimed subject matter are disclosed herein. However, it should be understood that the disclosed embodiments and implementations are merely illustrative of the claimed subject matter that may be embodied in various forms. However, the present invention may be embodied in many different forms and should not be construed as limited to the exemplary embodiments and implementations set forth herein. On the contrary, these exemplary embodiments and implementations are provided to make the description of the present invention thorough and complete and to fully convey the scope of the present invention to those skilled in the art. In the following description, details of well-known features and technologies may be omitted to avoid unnecessary confusion in the presented embodiments and implementations.

[0031] Overview

[0032] Embodiments according to the present invention relate to various techniques, methods, schemes, and / or solutions related to tone alignment for distributed tone RUs in a 6 GHz LPI system. According to the present invention, various possible solutions may be implemented individually or in combination. That is, while these possible solutions may be described separately below, two or more of these possible solutions may be implemented in one or more combinations.

[0033] It is worth noting that, in the present invention, the 26-tone rule RU can be interchangeably expressed as RU26 (or rRU26), the 52-tone rule RU can be interchangeably expressed as RU52 (or rRU52), the 106-tone rule RU can be interchangeably expressed as RU106 (or rRU106), the 242-tone rule RU can be interchangeably expressed as RU242 (or rRU242), etc. In addition, the aggregate (26+52)-tone rule MRU can be interchangeably expressed as MRU78 (or rMRU78), the aggregate (26+106)-tone rule MRU can be interchangeably expressed as MRU132 (or rMRU132), etc. Furthermore, in the present invention, a 26-tone distributed tone RU may be interchangeably represented as dRU26, a 52-tone distributed tone RU may be interchangeably represented as dRU52, a 106-tone distributed tone RU may be interchangeably represented as dRU106, a 242-tone distributed tone RU may be interchangeably represented as dRU242, etc. Furthermore, an aggregate (26+52)-tone distributed tone MRU may be interchangeably represented as dMRU78, an aggregate (26+106)-tone distributed tone MRU may be interchangeably represented as dMRU132, etc.

[0034] Since the above examples are merely illustrative and not an exhaustive list of all possibilities, the same applies to regular RUs, distributed tone RUs, MRUs, and distributed tone MRUs of different sizes (or different numbers of tones). It is also worth noting that, in the present invention, a bandwidth of 20 MHz can be interchangeably represented as BW20, a bandwidth of 40 MHz can be interchangeably represented as BW40, a bandwidth of 80 MHz can be interchangeably represented as BW80, a bandwidth of 160 MHz can be interchangeably represented as BW160, a bandwidth of 240 MHz can be interchangeably represented as BW240, and a bandwidth of 320 MHz can be interchangeably represented as BW320. It is also worth noting that, in the present invention, the 26-tone interleaved-tone (or interleaved-tone) RU may be interchangeably denoted as iRU26, the 52-tone interleaved-tone (or interleaved-tone) RU may be interchangeably denoted as iRU52, the 106-tone interleaved-tone (or interleaved-tone) RU may be interchangeably denoted as iRU106, the 242-tone interleaved-tone (or interleaved-tone) RU may be interchangeably denoted as iRU242, and the 484-tone interleaved-tone (or interleaved-tone) RU may be interchangeably denoted as iRU484.

[0035] Figure 1 An example network environment 100 is shown in which various solutions and approaches according to the present invention may be implemented. Figures 2 to 17 FIG. 1 shows an example implementation of various proposed solutions in a network environment 100 according to the present invention. Figure 1-17,A description of the various proposed schemes is provided below.

[0036] refer to Figure 1 , a network environment 100 may involve a communication entity 110 and a communication entity 120 for wireless communication (e.g., in a WLAN according to one or more IEEE 802.11 standards). For example, the communication entity 110 may be a first station (STA) and the communication entity 120 may be a second STA, wherein each of the first STA and the second STA functions as an AP STA or a non-AP STA. Under various proposed schemes according to the present invention, the subcarriers of a given RU can be distributed over a wider bandwidth (e.g., 80 MHz, 160 MHz, or 320 MHz) through tone alignment to improve Tx power in a 6 GHz LPI system. Therefore, as described herein, the communication entity 110 and the communication entity 120 can be configured to perform wireless communication using tone-aligned distributed tone RUs (dRUs) in a 6 GHz LPI system.

[0037] Under the first proposed scheme according to the present invention, the index of the dRU may be edge-tone aligned and symmetrical with respect to one or more direct-current (DC) tones located at the center of the plurality of tone distributions of the dRU. Figure 2 An example design 200 according to a first proposed solution is shown. Figure 2 , each of the 26-tone dRU, 52-tone dRU, 106-tone dRU, and 242-tone dRU may include a lower (or Figure 2 Left side shown) and top (or Figure 2 (as shown on the right side). Under the proposed scheme, the lower and upper parts can be DC symmetric (or symmetric about the DC tone). That is, if the index in the lower part is represented by Lru and the index in the upper part is represented by Uru, then mathematically Uru can be expressed as Uru = (-1) * Lru, because the lower part is a mirror image of the upper part.

[0038] Under the first proposed scheme, a 26-tone dRU index (e.g., the first 26-tone dRU or other) can be aligned with a given first left edge tone (e.g., -122 or other for BW20; -244 or other for BW40; -500 or other for BW80, etc.). The indices of other 26-tone dRUs can be designed relative to the first 26-tone dRU based on RUstart. Once all 26-tone dRUs are defined, dRUs of other sizes can be designed using the 26-tone dRU as a basic building block.

[0039] For example, each 52-tone dRU can be constructed by using two 26-tone dRUs. In addition, each 106-tone dRU can be constructed by using four 26-tone dRUs (or two 52-tone dRUs) and further filling one or more additional tones. One or more additional tones can be filled toward the center of the multiple tone distribution (or toward the DC tone). Figure 2 As shown, one or more additional tones can be padded on the left side and one or more additional tones can be padded on the right side. In addition, each 242-tone dRU can be constructed by using 9 26-tone dRUs (or 2 106-tone dRUs plus 1 26-tone dRU) and further padded with one or more additional tones (if it is padded with 2 106-tone dRUs plus 1 26-tone dRU, it is padded with 4 additional tones). One or more additional tones can be padded toward the center of the multiple tone distribution (or toward the DC tone). Figure 2 As shown, 4 tones (or 2 tones) can be padded on the left and 4 tones (or 2 tones) on the right. Similarly, each 484-tone dRU can be constructed by using two 242-tone dRUs. It is worth noting that under the proposed scheme, the dRU can maintain the same hierarchical structure as the regular RU.

[0040] Figure 3 An example scenario 300 according to the first proposed solution is shown. In the scenario 300, the multiple tone distributions of the dRU are edge aligned and symmetric about the DC tone. Specifically, Figure 3 The upper portion shows an example distribution of tones / indexes for a 106-tone dRU on a BW40, and Figure 3 The lower portion of FIG. 4 shows an example distribution of tones / indices for a 242-tone dRU on BW40. In each case, the distribution of tones / indices is aligned with the first left tone, and the first left tone depends on the bandwidth (e.g., aligned to a given index, such as -122 or -121 or -120 for BW20, and -244 or -243 for BW40, and so on). Where aligned can mean that the index of the first left tone of the dRU is the same as the index of the given left tone (e.g., the first 26-tone dRU) or has a predetermined difference from the index of the given left tone (e.g., another 26-tone dRU), such as, but not limited to, the index of the subsequent left tone. Figure 4 In addition, each of the 106-tone dRU and the 242-tone dRU can be padded with one or more additional tones. Figure 3As shown, the 106-tone dRU is padded with one extra tone on each lower and upper portion toward the center of the multiple tone distribution (thus toward the DC tone). Similarly, the 242-tone dRU is padded with 4 extra tones toward the center of the multiple tone distribution (thus toward the DC tone).

[0041] Figure 4 An example design 400 according to the first proposed solution is shown. Design 400 shows an example of generating indices for 26-tone dRU, 52-tone dRU, and 106-tone dRU with edge tone alignment while being symmetric about the DC tone. Figure 4 In the design 400, the term "L1st" refers to the first left edge tone, which may depend on the bandwidth. For example, the first left edge tone may be -122 or -121 or -120, etc. for BW20, and may be -244 or -243, etc. for BW40. It is also worth noting that in the design 400, i represents the index of the dRU, e.g. Figure 4 For the 26-tone dRU, dRU(i) = [Lru, Uru], where Lru = L1st + S(i) + [V, V + Np, V + 2*Np, …, V + 12*Np]; Np = 9; V = [0]; S = [0, 4, 2, 6, 8, 1, 5, 3, 7], where 0, 4, 2, 6, 8, 1, 5, 3, 7 are the deviation or starting predetermined values corresponding to the dRU indexed 1-9 respectively; for the 106-tone dRU on BW20, V(1:4) = [0, 2, 4, 6]. In addition, it is worth noting that in design 400, for the 242-tone dRU, Lru = L1st+S(i)+[V,V+Np,V+2*Np,…,V+12*Np,V(1:4)+13*Np], where the vector V represents the tone distribution pattern within the repetition period Np, and the vector S represents the RUstart parameter.

[0042] Figure 5 An example design 500 according to the first proposed solution is shown. Design 500 shows an example of a dRU index for BW20. Note that in design 500, it is assumed that for BW20, the first left edge tone L1st = -122, although L1st can be -121, -120, or other tones. For a 26-tone dRU, each entry can be summarized as [-a:D td :-bb:D td:a], where "-a" represents the leftmost tone of a given dRU in the lower part, "-b" represents the rightmost tone of the dRU in the lower part, "Dtd" represents the pitch distance between two adjacent tones of a dRU, "a" represents the rightmost tone of a given dRU in the upper part, and "b" represents the leftmost tone of the dRU in the upper part. For a 106-tone dRU, [-5,5] / [-4,4] in the figure represent two additional tones corresponding to the two dRUs respectively.

[0043] Under a second proposed solution according to the present invention, the index of the dRU can be center-aligned and symmetrical about the DC tone of one or more DC tones located at the center of the multiple tone distribution of the dRU. Wherein, center alignment can mean alignment to the tone at the center (e.g., a given DC tone), the dRU alignment to the tone at the center includes the rightmost tone of the left portion (or lower portion) of the dRU aligned to the left DC tone at the center (e.g., a given first left DC tone), or / and, the leftmost tone of the right portion (or upper portion) of the dRU aligned to the right DC tone at the center (e.g., a given first right DC tone), wherein the rightmost tone of the left portion (or lower portion) of the dRU aligned to the center The left DC tone can mean: the index of the rightmost tone of the left part (or lower part) of the dRU is the same as the index of the given left DC tone at the center (for example, the given first left DC tone), or the index of the rightmost tone of the left part (or lower part) of the dRU differs from the index of the given left DC tone at the center (for example, the given first left DC tone) by a predetermined value; the meaning of the leftmost tone of the right part (or upper part) of the dRU being aligned to the right DC tone at the center is similar and will not be repeated here. Figure 6 An example design 600 according to the second proposed solution is shown. Figure 6 , each of the 26-tone dRU, 52-tone dRU, 106-tone dRU, and 242-tone dRU may include a lower (or Figure 6 the left side shown in the figure) and the upper part (or Figure 6 ). Under the proposed scheme, the lower and upper parts can be DC symmetric (or symmetric about the DC tone). That is, if the index in the lower part is represented by Lru and the index in the upper part is represented by Uru, then mathematically Uru can be represented as Uru = (-1) * Lru, because the lower part is a mirror image of the upper part.

[0044] Under the second proposed scheme, a 26-tone dRU index (e.g., the first 26-tone dRU or other) can be aligned to a given DC tone (e.g., -2 or other for BW20, -3 or other for BW40, -3 or other for BW80, etc.). Other 26-tone dRU indices can be designed relative to the first 26-tone dRU or the last 26-tone dRU based on RUstart. Once all 26-tone dRUs are defined, dRUs of other sizes can be designed using the 26-tone dRU as a basic building block.

[0045] For example, each 52-tone dRU can be constructed by using two 26-tone dRUs. In addition, each 106-tone dRU can be constructed by using four 26-tone dRUs (or two 52-tone dRUs) and further filling one or more additional tones. One or more additional tones can be filled toward the edge of the multiple tone distribution (e.g., the left edge or the right edge). Figure 6 As shown, one or more additional tones can be padded on the left side, and one or more additional tones can be padded on the right side. In addition, each 242-tone dRU can be padded by using 9 26-tone dRUs (or 2 106-tone dRUs plus 1 26-tone dRU) and further padded with one or more additional tones (4 additional tones if constructed from 2 106-tone dRUs plus 1 26-tone dRU). One or more additional tones can be padded toward the edge of the multiple tone distribution (e.g., the left edge or the right edge). Figure 6 As shown, 4 tones (or 2 tones) can be padded on the left, and 4 tones (or 2 tones) can be padded on the right. Similarly, each 484-tone dRU can be constructed by using two 242-tone dRUs. It is worth noting that under the proposed scheme, the dRU can maintain the same hierarchical structure as the regular RU.

[0046] Figure 7 An example scenario 700 according to the second proposed solution is shown. In the scenario 700, the multiple tone distributions of the dRU are center-aligned and symmetric about the DC tone. Specifically, Figure 7 The upper portion shows an example distribution of tones / indexes for a 106-tone dRU on a BW40, and Figure 7 The lower portion of FIG shows an example distribution of tones / indices for a 242-tone dRU on BW40. In each case, the distribution of tones / indices is center-aligned (e.g., aligned to the DC tone). In addition, each of the 106-tone dRU and the 242-tone dRU can be padded with one or more additional tones. Figure 7As shown, the 106-tone dRU is padded with one extra tone toward the edge of the tone distribution (e.g., the left edge or the right edge). Similarly, the 242-tone dRU is padded with 4 extra tones toward the edge of the tone distribution (e.g., the left edge or the right edge).

[0047] Figure 8 An example design 800 according to the second proposed solution is shown. Design 800 shows an example of index generation for 26-tone dRU, 52-tone dRU, and 106-tone dRU with center alignment (or DC tone alignment) while being symmetric about the DC tone. Figure 8 In the design 800, the term "Ndc" represents the number of DC tones and may depend on the bandwidth. For example, for BW20, Ndc may be 3 or 5 or other, and for BW40, Ndc may be 5 or 7 or other, and so on. It is also worth noting that in design 800, for a 106-tone dRU on BW20, V(1:4) = [0, 2, 4, 6]. Furthermore, it is worth noting that in design 800, for a 242-tone dRU, Lru = (-1)*(13*Np+floor(Ndc / 2))+S(i)+[V(6:9)–Np, V, V+Np, V+2*Np, …, V+12*Np], where the vector V represents the tone distribution pattern within the repetition period Np and the vector S represents the RUstart parameter.

[0048] Figure 9 An example design 900 according to the second proposed solution is shown. Design 900 shows an example dRU index for BW20. Note that in design 900, it is assumed that for BW20, the number of DC tones, Ndc, is 3, although Ndc can also be 5 or 7 or other values. For a 106-tone dRU, [-121, 121] / [-120, 120] in the figure represents two additional tones corresponding to the two dRUs, respectively.

[0049] Under a third proposal according to the present invention, the indexing of the dRUs may be edge tone aligned and asymmetric with respect to the DC tone among one or more DC tones located at the center of the dRU's multiple tone distributions.

[0050] Figure 10 An example design 1000 according to the third proposed solution is shown. Figure 10 , each of the 26-tone dRU, 52-tone dRU, 106-tone dRU, and 242-tone dRU may include a lower (or Figure 10 the left side shown in the figure) and the upper part (or Figure 10Under the proposed scheme, the lower and upper parts may not be DC symmetric (or not symmetric about the DC tone).

[0051] Under the third proposed scheme, a 26-tone dRU index (e.g., the first 26-tone dRU or other) can be aligned with a given first left edge tone (e.g., the first left edge tone is -122 or other, such as -121 or -120 for BW20, -244 or other for BW40, -500 or other for BW80, etc.). Other 26-tone dRU indices can be designed relative to the first 26-tone dRU based on RUstart. Once all 26-tone dRUs are defined, dRUs of other sizes can be designed using the 26-tone dRU as a basic building block.

[0052] For example, each 52-tone dRU can be constructed by using two 26-tone dRUs. In addition, each 106-tone dRU can be constructed by using four 26-tone dRUs (or two 52-tone dRUs) and further filling one or more additional tones. One or more additional tones can be filled toward the center and edge (e.g., left edge or right edge) of the tone distribution. Figure 10 As shown, one or more additional tones can be padded on the left side toward the center (or DC tone), and one or more additional tones can be padded on the right side toward the right edge of the tone distribution. In addition, each 242-tone dRU can be padded by using 9 26-tone dRUs (or 2 106-tone dRUs plus 1 26-tone dRU) and further padded with one or more additional tones (if padded with 2 106-tone dRUs plus 1 26-tone dRU, then 4 additional tones). One or more additional tones can be padded toward the center and edge (e.g., the left edge or the right edge) of the tone distribution. As shown Figure 10 As shown, 4 tones (or 2 tones) can be padded on the left side toward the center (or DC tone), and 4 tones (or 2 tones) can be padded on the right side toward the right edge of the tone distribution. Similarly, each 484-tone dRU can be constructed by using two 242-tone dRUs. It is worth noting that under the proposed scheme, the dRU can maintain the same hierarchical structure as the regular RU.

[0053] Alternatively, in another embodiment, the index of the dRU is aligned with a given first right edge tone and is asymmetric with respect to the DC tone among one or more DC tones located at the center of the tone distribution of the dRU; one or more additional tones are padded toward the DC tone in the upper portion of the dRU, and one or more additional tones are padded toward the left edge of the tone distribution in the lower portion of the dRU.

[0054] Figure 11 An example design 1100 according to the third proposed solution is shown. Design 1100 shows an example of generating indices for 26-tone dRU, 52-tone dRU, and 106-tone dRU with edge tone alignment while asymmetric with respect to DC tone. Figure 11 In the design 1100, the term "L1st" refers to the first left edge tone, which may be bandwidth-dependent. For example, the first left edge tone may be -122 or -121 or -120, etc. for BW20, and -244 or -243, etc. for BW40. It is also worth noting that in the design 1100, for a 106-tone dRU on BW20, V(1:4) = [0, 2, 4, 6]. In addition, it is worth noting that in the design 1100, for a 242-tone dRU, Lru = L1st + S(i) + [V, V+Np, V+2*Np, …, V+12*Np, V(1:4) + 13*Np], where the vector V represents the tone distribution pattern within the repetition period Np, and the vector S represents the RUstart parameter. Wherein, DCshift represents the offset relative to the DC tone at the center, where the DC tone at the center may be the DC tone with index 0.

[0055] Figure 12 An example design 1200 according to the third proposed scheme is shown. Design 1200 shows an example of a dRU index for BW20. Note that in design 1200, it is assumed that the first left edge tone of BW20, L1st, is -122, although L1st can also be -121, -120, or other tones. For a 106-tone dRU, [-5, 119] / [-4, 120] in the figure represent two additional tones corresponding to the two dRUs, respectively.

[0056] Under a fourth proposal according to the present invention, the indexing of dRUs may be center-aligned and asymmetric with respect to the DC tone in one or more DC tones located at the center of the dRU's multiple tone distribution. Figure 13 An example design 1300 according to the fourth proposed solution is shown. Figure 13 , each of the 26-tone dRU, 52-tone dRU, 106-tone dRU, and 242-tone dRU may include a lower (or Figure 13 Left side shown) and top (or Figure 13 Right side shown). Under the proposed scheme, the lower and upper parts may not be DC symmetric (or asymmetric about the DC tone).

[0057] Under the fourth proposed scheme, a 26-tone dRU index (e.g., the first 26-tone dRU or other) can be aligned with a given DC tone (e.g., -2 or other for BW20, -3 or other for BW40, -3 or other for BW80, etc.). Other 26-tone dRU indices can be designed relative to the first 26-tone dRU or the last 26-tone dRU based on RUstart. Once all 26-tone dRUs are defined, dRUs of other sizes can be designed using the 26-tone dRU as a basic building block.

[0058] For example, each 52-tone dRU can be constructed by using two 26-tone dRUs. In addition, each 106-tone dRU can be constructed by using four 26-tone dRUs (or two 52-tone dRUs) and further filling one or more additional tones. One or more additional tones can be filled toward the edge of the tone distribution (e.g., the left edge or the right edge). Figure 13 As shown, one or more additional tones are padded on the left side toward the left edge of the tone distribution, and one or more additional tones are padded on the right side toward the right edge of the tone distribution. In addition, each 242-tone dRU can be padded by using 9 26-tone dRUs (or 2 106-tone dRUs plus 1 26-tone dRU) and further padded with one or more additional tones (4 additional tones if constructed from 2 106-tone dRUs plus 1 26-tone dRU). One or more additional tones can be padded toward the edge of the tone distribution (e.g., the left edge or the right edge). As shown Figure 13 As shown, the left side can be padded with 4 tones (or 2 tones) toward the left edge of the tone distribution, and the right side can be padded with 4 tones (or 2 tones) toward the right edge of the tone distribution. Similarly, each 484-tone dRU can be constructed by using two 242-tone dRUs. It is worth noting that under the proposed scheme, the dRU can maintain the same hierarchical structure as the regular RU.

[0059] Figure 14 An example design 1400 according to the fourth proposed solution is shown. Design 1400 shows an example of generating indices for 26-tone dRU, 52-tone dRU, and 106-tone dRU with center alignment and asymmetry about the DC tone. Figure 14In the design 1400, the term "Ndc" represents the number of DC tones and may be bandwidth-dependent. For example, for BW20, Ndc may be 3 or 5, and for BW40, Ndc may be 5 or 7. It is also worth noting that in design 1400, for a 106-tone dRU on BW20, V(1:4) = [0, 2, 4, 6]. In addition, it is worth noting that in design 1400, for the 242-tone dRU, Lru=(-1)*(13*Np+floor(Ndc / 2))+S(i)+[V(6:9)–Np,V,V+Np,V+2*Np,...,V+12*Np], and Uru=ceil(Ndc / 2)+S(i)+[V,V+Np,V+2*Np,...,V+12*Np,V(1:4)+13*Np], where the vector V represents the tone distribution pattern within the repetition period Np and the vector S represents the RUstart parameter.

[0060] Figure 15 An example design 1500 according to the fourth proposed solution is shown. Design 1500 shows an example of dRU indexing for BW20. Note that in design 1500, it is assumed that the first left edge tone of BW20 is L1st=-118, although L1st can be -121, -120, or other tones.

[0061] Illustrative Embodiments

[0062] Figure 16 An example system 1600 is shown having at least an example apparatus 1610 and an example apparatus 1620 according to an embodiment of the present invention. Each of apparatus 1610 and apparatus 1620 can perform various functions to implement the schemes, techniques, processes, and methods described herein related to tone alignment of DRUs in a 6 GHz LPI system, including the various proposed designs, concepts, schemes, systems, and methods described above and the processes described below. For example, apparatus 1610 can be an example implementation of communication entity 110, and apparatus 1620 can be an example implementation of communication entity 120.

[0063] Each of device 1610 and device 1620 may be part of an electronic device, which may be a STA or AP, such as a portable or mobile device, a wearable device, a wireless communication device, or a computing device. For example, each of device 1610 and device 1620 may be implemented in a smartphone, a smartwatch, a personal digital assistant, a digital camera, or a computing device such as a tablet, laptop, or notebook computer. Each of device 1610 and device 1620 may also be part of a machine-type device, which may be an Internet of Things (IoT) device, such as a fixed or non-mobile device, a home appliance, a wired communication device, or a computing device. For example, each of device 1610 and device 1620 may be implemented in a smart thermostat, a smart refrigerator, a smart door lock, a wireless speaker, or a home control center. When implemented in or as a network device, device 1610 and / or device 1620 may be implemented in a network node, such as an AP in a WLAN.

[0064] In some embodiments, each of the apparatus 1610 and the apparatus 1620 may be implemented in the form of one or more integrated circuit (IC) chips, such as, but not limited to, one or more single-core processors, one or more multi-core processors, one or more reduced-instruction set computing (RISC) processors, or one or more complex-instruction-set computing (CISC) processors. In the various schemes described above, each of the apparatus 1610 and the apparatus 1620 may be implemented in or as a STA or an AP. Each of the apparatus 1610 and the apparatus 1620 may include Figure 16 , such as processor 1612 and processor 1622, respectively. Each of apparatus 1610 and apparatus 1620 may also include one or more other components not relevant to the proposed solution of the present invention (e.g., an internal power supply, a display device, and / or a user interface device), and therefore, for simplicity, such components of apparatus 1610 and apparatus 1620 are not shown in FIG. Figure 16 is not shown in the figure and is not described below.

[0065] In one aspect, each of processors 1612 and 1622 can be implemented in the form of one or more single-core processors, one or more multi-core processors, one or more RISC processors, or one or more CISC processors. That is, even though the singular term "processor" is used herein to refer to processors 1612 and 1622, each of processors 1612 and 1622 may include multiple processors in some embodiments and a single processor in other embodiments. In another aspect, each of processors 1612 and 1622 can be implemented in the form of hardware (and optionally, firmware) having electronic components, including, for example, but not limited to, one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors, and / or one or more varactors configured and arranged to achieve a specific purpose in accordance with the present invention. In other words, in at least some embodiments, each of processors 1612 and 1622 is a dedicated machine specifically designed, arranged, and configured to perform specific tasks, including those tasks related to tone alignment of dRUs in a 6 GHz LPI system in accordance with various embodiments of the present invention. For example, each of processor 1612 and processor 1622 may be configured with hardware components or circuitry to implement one, some, or all of the examples described and illustrated herein.

[0066] In some embodiments, the apparatus 1610 may further include a transceiver 1616 coupled to the processor 1612. The transceiver 1616 may be capable of wirelessly transmitting and receiving data. In some embodiments, the apparatus 1620 may further include a transceiver 1626 coupled to the processor 1622. The transceiver 1626 may include a transceiver capable of wirelessly transmitting and receiving data.

[0067] In some embodiments, the device 1610 may further include a memory 1614 coupled to the processor 1612 and accessible by the processor 1612, and storing data therein. In some embodiments, the device 1620 may further include a memory 1624 coupled to the processor 1622 and accessible by the processor 1622, and storing data therein. Each of the memory 1614 and the memory 1624 may include a random-access memory (RAM), such as dynamic RAM (DRAM), static RAM (SRAM), thyristor RAM (T-RAM), and / or zero-capacitor RAM (Z-RAM). Alternatively or additionally, each of memory 1614 and memory 1624 may include a type of read-only memory (ROM), such as mask ROM, programmable ROM (PROM), erasable programmable ROM (EPROM), and / or electrically erasable programmable ROM (EEPROM). Alternatively or additionally, each of memory 1614 and memory 1624 may include a type of non-volatile random-access memory (NVRAM), such as flash memory, solid-state memory, ferroelectric RAM (FeRAM), magnetoresistive RAM (MRAM), and / or phase-change memory.

[0068] Each of apparatus 1610 and apparatus 1620 may be a communication entity capable of communicating with each other using various proposed schemes according to the present invention. For illustrative purposes and not limitation, a description of the capabilities of apparatus 1610 as communication entity 110 and apparatus 1620 as communication entity 120 is provided below. It is worth noting that while the example embodiments described below are provided in the context of a WLAN, they may also be implemented in other types of networks. Therefore, while the following description of the example embodiments pertains to a scenario in which apparatus 1610 acts as a transmitting device and apparatus 1620 acts as a receiving device, the same applies to another scenario in which apparatus 1610 acts as a receiving device and apparatus 1620 acts as a transmitting device.

[0069] According to the proposed scheme for tone alignment of dRUs in a 6 GHz LPI system, the processor 1612 of the apparatus 1610 can distribute the subcarriers of the RUs across the bandwidth to generate a dRU with tone alignment. In addition, the processor 1612 can use the dRUs for wireless communication via the transceiver 1616.

[0070] In some embodiments, a dRU with tone alignment can be generated using multiple indices of the dRU, wherein the distribution of the multiple indices of the dRU is edge tone aligned and asymmetric about a DC tone located at the center of the multiple tone distribution of the dRU. In some embodiments, the multiple tones of the dRU can include at least 106 tones with one or more additional tones padded toward the DC tone and toward the edges of the multiple tone distribution.

[0071] In some embodiments, the plurality of indices of the dRU can be used to generate a dRU with tone alignment, wherein the distribution of the plurality of indices of the dRU is center-aligned and asymmetric about a DC tone located at the center of the plurality of tone distributions of the dRU. In some embodiments, the plurality of tones of the dRU can include at least 106 tones with one or more additional tones, wherein the one or more additional tones are padded toward the edges of the plurality of tone distributions.

[0072] In some embodiments, multiple indices of a dRU can be used to generate a dRU with tone alignment, wherein the distribution of the multiple indices of the dRU is edge-tone aligned and symmetric about a DC tone located at the center of the distribution of the multiple tones of the dRU. In some embodiments, the multiple tones of the dRU can include at least 106 tones with one or more additional tones, wherein the one or more additional tones are padded toward the DC tone.

[0073] In some embodiments, a dRU with tone alignment can be generated using multiple indices of the dRU, the distribution of the multiple indices of the dRU being center-aligned and symmetric about a DC tone located at the center of the multiple tone distribution of the dRU. In some embodiments, the multiple tones of the dRU can include at least 106 tones with one or more additional tones, wherein the one or more additional tones are padded toward the edges of the multiple tone distribution.

[0074] In some implementations, when using a dRU for wireless communication, the processor 1612 may use the dRU for wireless communication in a 6 GHz LPI system.

[0075] Illustrative Process

[0076] Figure 17An example process 1700 is shown in accordance with an embodiment of the present invention. Process 1700 may represent one aspect of implementing the various proposed designs, concepts, schemes, systems, and methods described above. More specifically, process 1700 may represent one aspect of the proposed concepts and schemes related to tone alignment of dRUs in a 6 GHz LPI system in accordance with the present invention. Process 1700 may include one or more operations, actions, or functions as shown in one or more of blocks 1710 and 1720. Although shown as discrete blocks, the various blocks of process 1700 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Furthermore, the blocks / sub-blocks of process 1700 may be arranged as Figure 17 16. The process 1700 may be performed in the order shown, or in a different order. In addition, one or more of the blocks / subblocks of process 1700 may be performed repeatedly or iteratively. Process 1700 may be implemented by or in apparatus 1610 and apparatus 1620, and any variants thereof. For illustrative purposes only and without limiting the scope, process 1700 is described below in the context of apparatus 1610 as a communication entity 110 (e.g., a transmitting device of a STA or AP) and apparatus 1620 as a receiving device 120 (e.g., a receiving device of a STA or AP) in a wireless network (e.g., a WLAN) according to one or more IEEE 802.11 standards. Process 1700 may begin at block 1710.

[0077] At 1710, process 1700 may involve processor 1612 of apparatus 1610 distributing subcarriers of the RU across a bandwidth to generate a dRU with tone alignment.

[0078] At 1720 , process 1700 may involve processor 1612 communicating wirelessly via transceiver 1616 using the dRU.

[0079] In some embodiments, a dRU having tone alignment is generated using multiple indices of the dRU that are edge-tone aligned and asymmetric about a DC tone located at the center of the multiple tone distribution of the dRU. In some embodiments, the multiple tones of the dRU may include at least 106 tones with one or more additional tones padded toward the DC tone and toward the edges of the multiple tone distribution.

[0080] In some embodiments, a dRU having tone alignment is generated using the plurality of indices of the dRU that are center-aligned and asymmetric about a DC tone located at the center of the plurality of tone distributions of the dRU. In some embodiments, the plurality of tones of the dRU may include at least 106 tones with one or more additional tones padded toward the edges of the plurality of tone distributions.

[0081] In some embodiments, using the plurality of indices of the dRU generates a dRU having tone alignment that is edge tone aligned and symmetric about a DC tone located at the center of the plurality of tones of the dRU. In some embodiments, the plurality of tones of the dRU may include at least 106 tones with one or more additional tones, wherein the one or more additional tones are padded toward the DC tone.

[0082] In some embodiments, a dRU with tone alignment can be generated using multiple indices of the dRU that are center-aligned and symmetric about a DC tone located at the center of the multiple tone distribution of the dRU. In some embodiments, the multiple tones of the dRU can include at least 106 tones with one or more additional tones padded toward the edges of the multiple tone distribution.

[0083] In some implementations, when a dRU is used for wireless communication, process 1700 may involve processor 1612 using the dRU for wireless communication in a 6 GHz LPI system.

[0084] Additional Notes

[0085] The subject matter described herein sometimes illustrates different components contained within or connected to other different components. It should be understood that the architecture depicted in this manner is merely an example, and in fact many other architectures can be implemented to achieve the same functionality. In a conceptual sense, any component arrangement that achieves the same functionality is effectively "associated" so as to achieve the desired functionality. Therefore, any two components combined here to achieve a particular functionality can be considered to be "associated" with each other so as to achieve the desired functionality, regardless of the architecture or intermediate components. Similarly, any two components so associated can also be considered to be "operably connected" or "operably coupled" to each other to achieve the desired functionality, and any two components that can be so associated can also be considered to be "operably coupled" to each other to achieve the desired functionality. Specific examples of operable coupling include, but are not limited to, physically pairable and / or physically interacting components and / or wirelessly interactive and / or wirelessly interactive components and / or logically interacting and / or logically interacting components.

[0086] In addition, with respect to the use of substantially any plural and / or singular terms herein, those skilled in the art can translate from the plural to the singular and / or from the singular to the plural as appropriate to the context and / or application. For clarity, various singular / plural permutations may be expressly set forth herein.

[0087] Furthermore, those skilled in the art will appreciate that the terms used herein, and particularly in the appended claims, such as the bodies of the appended claims, are generally intended to be “open-ended” terms, e.g., the term “including” should be interpreted as “including but not limited to,” the term “comprising” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” etc. Those skilled in the art will further appreciate that if a specific number of an introduced claim element is intended, such intent will be explicitly recited in the claim, and in the absence of such recitation, such intent is absent. For example, to aid understanding, the appended claims may contain the use of the introductory phrases “at least one” and “one or more” to introduce claim elements. However, the use of such phrases should not be construed to imply that a claim element introduced by the indefinite article “a” or “an” is limited to any particular claim containing such introduced claim element to only one such element, even when the same claim contains the introductory phrases “one or more” or “at least one” and an indefinite article such as “a” or “an.” For example, “a” and / or “an” should be interpreted to mean “at least one” or “one or more.” The same applies to the use of definite articles used to introduce claim elements. Furthermore, even if a specific number of an introduced claim element is explicitly recited, one skilled in the art will recognize that such a statement should be interpreted to mean at least the recited number, e.g., the recitation "two elements" without other qualifiers means at least two elements or two or more elements. Furthermore, where similar "at least one of A, B, and C, etc." is used, for its purposes, generally such a construction will be understood by one skilled in the art to be the convention, e.g., "a system having at least one of A, B, and C" will include but is not limited to a system having A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. Where similar "at least one of A, B, or C, etc." is used, for its purposes, generally such a construction will be understood by one skilled in the art to be the convention, e.g., "a system having at least one of A, B, or C" will include but is not limited to a system having A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. Those skilled in the art will further understand that any transitional word and / or phrase that actually represents two or more alternatives, whether in the specification, claims, or drawings, should be understood to include the possibility of one of the multiple terms, any of the multiple terms, or both terms. For example, the phrase "A or B" will be understood to include the possibility of "A" or "B" or "A and B".

[0088] It will be appreciated that various embodiments of the present invention have been described herein for illustrative purposes and that various modifications may be made without departing from the scope and spirit of the present invention. Therefore, the various embodiments disclosed herein are not intended to be limiting, and the true scope and spirit of the present invention are determined by the appended claims.

Claims

1. A wireless communication method, characterized in that: include: distributing subcarriers of a resource unit RU over a bandwidth to generate a distributed tone resource unit dRU with tone alignment; as well as Performing wireless communication using the dRU; wherein the tone-aligned dru is generated using a plurality of indices of the dru, wherein the distribution of the plurality of indices is edge tone-aligned and asymmetric with respect to a direct current (DC) tone located at a center of the plurality of tone distributions of the dru; wherein the edge tone alignment is aligned with a given first left edge tone; one or more additional tones are filled in the lower part of the dRU toward the DC tone, and one or more additional tones are filled in the upper part of the dRU toward the right edge of the plurality of tone distributions; Alternatively, the edge tone alignment is aligned with a given first right edge tone; one or more additional tones are filled in the upper part of the dRU toward the DC tone, and one or more additional tones are filled in the lower part of the dRU toward the left edge of the multiple tone distribution.

2. The method according to claim 1, wherein The plurality of tones of the dRU includes at least 106 tones with one or more additional tones.

3. A wireless communication method, characterized in that: include: distributing subcarriers of a resource unit RU over a bandwidth to generate a distributed tone resource unit dRU with tone alignment; as well as Performing wireless communication using the dRU; The dRU with tone alignment is generated using multiple indices of the dRU, and the distribution of the multiple indices is center-aligned and asymmetric with respect to a DC tone located at the center of the multiple tone distribution of the dRU, wherein the distribution of the multiple indices is center-aligned indicating that the rightmost tone of the left portion of the dRU is aligned to the left DC tone at the center, and, the leftmost tone of the right portion of the dRU is aligned to the right DC tone at the center; wherein the multiple tones of the dRU include at least 106 tones with one or more additional tones, wherein the one or more additional tones are filled toward the edges of the multiple tone distributions.

4. The method according to claim 3, wherein The index of the rightmost tone of the left portion of the dRU is the same as the index of the given left DC tone at the center, or the index of the rightmost tone of the left portion of the dRU differs from the index of the given left DC tone at the center by a predetermined value.

5. A wireless communication method, characterized in that: include: distributing subcarriers of a resource unit RU over a bandwidth to generate a distributed tone resource unit dRU with tone alignment; as well as Wireless communication is performed using the dRU; the dRU with tone alignment is generated using multiple indices of the dRU, the distribution of the multiple indices is edge tone aligned and symmetric about a DC tone located at the center of the multiple tone distribution of the dRU, wherein the multiple tones of the dRU include at least 106 tones with one or more additional tones, wherein the one or more additional tones are padded toward the DC tone.

6. A wireless communication method, characterized in that: include: distributing subcarriers of a resource unit RU over a bandwidth to generate a distributed tone resource unit dRU with tone alignment; as well as Wireless communication is performed using the dRU; wherein the dRU with tone alignment is generated using multiple indices of the dRU, the distribution of the multiple indices is center-aligned and symmetric about a DC tone located at the center of the multiple tone distributions of the dRU, and the multiple tones of the dRU include at least 106 tones with one or more additional tones, wherein the one or more additional tones are padded toward the edges of the multiple tone distributions.

7. The method according to claim 6, wherein Using the dRU to perform wireless communication includes: using the dRU to perform wireless communication in a 6 GHz low power indoor LPI system.

8. A communication device, characterized in that: include: a transceiver configured to transmit and receive wirelessly; as well as a processor coupled to the transceiver and configured to perform the following operations via the transceiver: distributing subcarriers of a resource unit RU over a bandwidth to generate a distributed tone resource unit dRU with tone alignment; and Performing wireless communication using the dRU; wherein the tone-aligned dRU is generated using a plurality of indices of the dRU, distributions of the plurality of indices being edge tone-aligned and asymmetric with respect to a DC tone located at a center of the plurality of tone distributions of the dRU; wherein the edge tone alignment is aligned with a given first left edge tone; one or more additional tones are filled in the lower part of the dRU toward the DC tone, and one or more additional tones are filled in the upper part of the dRU toward the right edge of the plurality of tone distributions; Alternatively, the edge tone alignment is aligned with a given first right edge tone; one or more additional tones are filled in the upper part of the dRU toward the DC tone, and one or more additional tones are filled in the lower part of the dRU toward the left edge of the multiple tone distribution.

9. The device according to claim 8, characterized in that The plurality of tones of the dRU includes at least 106 tones with one or more additional tones.

10. A communication device, characterized in that: include: a transceiver configured to transmit and receive wirelessly; as well as a processor coupled to the transceiver and configured to perform the following operations via the transceiver: distributing subcarriers of a resource unit RU over a bandwidth to generate a distributed tone resource unit dRU with tone alignment; and Wireless communication is performed using the dRU; wherein the dRU with tone alignment is generated using multiple indices of the dRU, and the distribution of the multiple indices is center-aligned and asymmetric with respect to a DC tone located at the center of the multiple tone distribution of the dRU, wherein the distribution of the multiple indices is center-aligned indicating that the rightmost tone of the left portion of the dRU is aligned to the left DC tone at the center, and, the leftmost tone of the right portion of the dRU is aligned to the right DC tone at the center; wherein the multiple tones of the dRU include at least 106 tones with one or more additional tones, wherein the one or more additional tones are padded toward the edges of the multiple tone distributions.

11. The device according to claim 10, characterized in that The index of the rightmost tone of the left portion of the dRU is the same as the index of the given left DC tone at the center, or the index of the rightmost tone of the left portion of the dRU differs from the index of the given left DC tone at the center by a predetermined value.

12. A communication device, characterized in that: include: a transceiver configured to transmit and receive wirelessly; as well as a processor coupled to the transceiver and configured to perform the following operations via the transceiver: distributing subcarriers of a resource unit RU over a bandwidth to generate a distributed tone resource unit dRU with tone alignment; and Wireless communication is performed using the dRU; wherein the dRU with tone alignment is generated using multiple indices of the dRU, the distribution of the multiple indices is edge tone aligned and symmetric about a DC tone located at the center of the multiple tone distribution of the dRU, wherein the multiple tones of the dRU include at least 106 tones with one or more additional tones, wherein the one or more additional tones are padded toward the DC tone.

13. A communication device, characterized in that: include: a transceiver configured to transmit and receive wirelessly; as well as a processor coupled to the transceiver and configured to perform the following operations via the transceiver: distributing subcarriers of a resource unit RU over a bandwidth to generate a distributed tone resource unit dRU with tone alignment; and Wireless communication is performed using the dRU; wherein the dRU with tone alignment is generated using multiple indices of the dRU, the distribution of the multiple indices is center-aligned and symmetric about a DC tone located at the center of the multiple tone distributions of the dRU, and the multiple tones of the dRU include at least 106 tones with one or more additional tones, wherein the one or more additional tones are padded toward the edges of the multiple tone distributions.

14. The device according to claim 13, characterized in that When the dRU is used for wireless communication, the processor is configured to use the dRU for wireless communication in a 6 GHz low power indoor LPI system.

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