A method and apparatus for distributed tone resource unit transmission

Abstract

Techniques related to detailed signaling design for distributed tone resource unit (dRU) transmissions in wireless communications are described. An apparatus generates a frame with an indication of a resource unit (RU) type and an indication of a dRU distribution bandwidth. The apparatus then transmits the frame to another apparatus. The RU type is indicated in a common information field or a special user information field of the frame. The dRU distribution bandwidth is indicated in a spatial stream (SS) allocation subfield of a user information field of the frame.

Description

TECHNICAL FIELD

[0001] The present application relates generally to wireless communications, and more specifically to detailed signaling designs for distributed-tone resource unit (dRU) transmissions in wireless communications. BACKGROUND

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

[0003] In next generation wireless communications (e.g., 6 GHz low-power indoor (LPI) systems according to Institute of Electrical and Electronics Engineers (IEEE) standards), the limits on power spectral density (PSD) tend to limit coverage, especially for uplink (UL) trigger-based (TB) physical-layer protocol data unit (PPDU). One approach to improve service range is to use distributed-tone resource units (dRUs) to increase transmit (Tx) power by distributing subcarriers or tones over a wider bandwidth (BW). However, one issue that needs to be addressed is how to signal the type of resource unit (RU) being transmitted, and, in the case of dRU transmissions, how to signal the dRU distributed BW. Therefore, there is a need for solutions to provide detailed signaling designs for dRU transmissions in wireless communications. SUMMARY

[0004] The following summary is illustrative only and is not intended to be in any way limiting. In other words, the following summary is presented to introduce some concepts, highlights, benefits and advantages of the novel and non-obvious technology described herein. Selected implementations are further described in the following detailed description. Thus, the following summary is not intended to determine essential features of the claimed subject matter, nor is it intended to limit the scope of the claimed subject matter.

[0005] It is among the purposes of the present invention to provide solutions, concepts, designs, techniques, methods and apparatuses related to detailed signaling design for dRU transmissions in wireless communications. In the present application, various solutions are presented related to different options for detailed allocation of bits for dRU signaling. For example, the RU type can be indicated in the Common Information field of an Extremely-High-Throughput (EHT) (or future developed standard) frame (e.g., a trigger frame or PPDU), and the distributed bandwidth can be indicated in the User Information field of the frame. In addition, the RU type can be indicated with Disregard bits in the Special User Info field or a combination of the Common Information field and the Special User Info field. Thus, the above-mentioned problems can be solved or otherwise alleviated according to the various solutions presented herein.

[0006] In a first aspect, the present invention provides a method for distributed tone resource unit transmission, comprising: generating, by a processor of an apparatus, a frame having an indication of a resource unit (RU) type and an indication of a distributed tone resource unit (dRU) distribution bandwidth; and transmitting, by the processor, the frame to another apparatus; wherein the RU type is indicated in a Common Information field or a Special User Info field of the frame, and the dRU distribution bandwidth is indicated in a Spatial Stream (SS) allocation subfield of a User Information field of the frame.

[0007] In some embodiments, the RU type is indicated by up to four consecutive bits in the Common Information field.

[0008] In some embodiments, the four consecutive bits include bits B56-B59 in a reserved subfield of the Common Information field.

[0009] In some embodiments, in response to a transmission bandwidth of 20MHz, 40MHz or 80MHz, bit B56 indicates the RU type to be regular resource unit (rRU) or distributed tone resource unit (dRU) for the 20MHz, 40MHz or 80MHz bandwidth, and bits B57-B59 are reserved; in response to a transmission bandwidth of 160MHz, each of bits B56 and B57 indicates the RU type for a respective 80MHz frequency segment of the two 80MHz frequency segments, and bits B58 and B59 are reserved; and in response to a transmission bandwidth of 320MHz, each of bits B56-B59 indicates the RU type for a respective 80MHz frequency segment of the four 80MHz frequency segments.

[0010] In some embodiments, the four consecutive bits include bits B59-B62 in a reserved subfield of the common information field.

[0011] In some embodiments, in response to a transmission bandwidth of 20MHz, 40MHz, or 80MHz, bit B59 indicates, for the 20MHz, 40MHz, or 80MHz bandwidth, a RU type to be either regular resource units (rRU) or distributed tone resource units (dRU), and bits B60-B62 are reserved; in response to a transmission bandwidth of 160MHz, each of bits B59 and B60 indicates, for a respective 80MHz frequency segment of the two 80MHz frequency segments, a RU type, and bits B61 and B62 are reserved; and, in response to a transmission bandwidth of 320MHz, each of bits B59-B62 indicates, for a respective 80MHz frequency segment of the four 80MHz frequency segments, a RU type.

[0012] In some embodiments, the four consecutive bits include bits B25-B28 in a universal signaling (U-SIG) ignore and validation subfield of the special user information field.

[0013] In some embodiments, in response to a transmission bandwidth of 20MHz, 40MHz, or 80MHz, bit B25 indicates, for the 20MHz, 40MHz, or 80MHz bandwidth, a RU type to be either regular resource units (rRU) or distributed tone resource units (dRU), and bits B26-B28 are reserved; in response to a transmission bandwidth of 160MHz, each of bits B25 and B26 indicates, for a respective 80MHz frequency segment of the two 80MHz frequency segments, a RU type, and bits B27 and B28 are reserved; and, in response to a transmission bandwidth of 320MHz, each of bits B25-B28 indicates, for a respective 80MHz frequency segment of the four 80MHz frequency segments, a RU type.

[0014] In some embodiments, the RU type is indicated by up to four non-consecutive bits in the common information field of the frame or by up to four non-consecutive bits in a combination of the common information field and the special user information field.

[0015] In some embodiments, in response to a transmission bandwidth of 20MHz, 40MHz, or 80MHz, bit B22 in the reserved subfield of the common information field indicates, for the 20MHz, 40MHz, or 80MHz bandwidth, that the RU type is regular resource unit (rRU) or distributed tone resource unit (dRU), while bits B26, B53, and B63 are reserved; in response to a transmission bandwidth of 160MHz, each of bits B22 and B26 indicates, for a respective 80MHz frequency segment of the two 80MHz frequency segments, the RU type, while bits B53 and B63 are reserved; and, in response to a transmission bandwidth of 320MHz, each of bits B22, B26, B53, and B63 indicates, for a respective 80MHz frequency segment of the four 80MHz frequency segments, the RU type.

[0016] In some embodiments, in response to a transmission bandwidth of 20MHz, 40MHz, or 80MHz, bit B53 or B63 in the reserved subfield of the common information field indicates, for the 20MHz, 40MHz, or 80MHz bandwidth, that the RU type is regular resource unit (rRU) or distributed tone resource unit (dRU), while bits B20, B21, B22, and B26 are reserved; in response to a transmission bandwidth of 160MHz, each of bits B20 and B21 in the gap interval (GI) and high efficiency (HE) / extremely high efficiency (EHT) long training field (EHT-LTF) type / triggered transmission opportunity (TXOP) sharing mode subfield of the common information field indicates, for a respective 80MHz frequency segment of the two 80MHz frequency segments, the RU type, while bits B22 and B26 are reserved, and bit B53 or B63 indicates that the RU type of at least one 80MHz frequency segment is dRU; and, in response to a transmission bandwidth of 320MHz, each of bits B20, B21, B22, and B26 represents the RU type of a respective 80MHz frequency segment of the four 80MHz frequency segments, while bit B53 or B63 represents that the RU type of at least one 80MHz frequency segment is dRU.

[0017] In some embodiments, in response to a transmission bandwidth of 20MHz, 40MHz, or 80MHz, bit B63 in the reserved subfield of the common information field indicates, for the 20MHz, 40MHz, or 80MHz bandwidth, that the RU type is regular resource unit (rRU) or distributed tone resource unit (dRU), while bits B37-B39 in another reserved subfield of the special user information field are reserved; in response to a transmission bandwidth of 160MHz, bits B63 and B21 indicate the RU type of a respective 80MHz frequency segment of the two 80MHz frequency segments, while bits B38 and B39 are reserved; and, in response to a transmission bandwidth of 320MHz, each of bits B63 and B37-B39 indicates the RU type of a respective 80MHz frequency segment of the four 80MHz frequency segments.

[0018] In some embodiments, the dRU distribution bandwidth is indicated by three or four bits in the SS Allocation subfield of the user info field.

[0019] In some embodiments, two bits B26 and B27 of the SS Allocation subfield are used to indicate the size of the frequency segment used for dRU transmission during the transmission frame; and one bit B31 of the SS Allocation subfield is used to indicate whether one spatial stream or two spatial streams are used in transmitting the dRU.

[0020] In some embodiments, a value of 00 in the two bits B26 and B27 of the SS Allocation subfield indicates that the dRU is transmitted in a 20MHz frequency segment used for dRU transmission; a value of 01 in the two bits B26 and B27 of the SS Allocation subfield indicates that the dRU is transmitted in a 40MHz frequency segment used for dRU transmission; a value of 10 in the two bits B26 and B27 of the SS Allocation subfield indicates that the dRU is transmitted in an 80MHz frequency segment used for dRU transmission; and a value of 11 in the two bits B26 and B27 of the SS Allocation subfield is reserved or indicates that the dRU is transmitted in a 160MHz frequency sub-block.

[0021] In some embodiments, a value of 01 in the two bits B26 and B27 of the SS Allocation subfield indicates that the dRU is transmitted in a 20MHz frequency segment used for dRU transmission; a value of 10 in the two bits B26 and B27 of the SS Allocation subfield indicates that the dRU is transmitted in a 40MHz frequency segment used for dRU transmission; a value of 11 in the two bits B26 and B27 of the SS Allocation subfield indicates that the dRU is transmitted in an 80MHz frequency segment used for dRU transmission; and a value of 00 in the two bits B26 and B27 of the SS Allocation subfield is reserved or indicates that the dRU is transmitted in a 160MHz frequency sub-block.

[0022] In some embodiments, two bits B26 and B27 of the SS Allocation subfield are used to indicate whether the dRU is transmitted in a 20MHz, 40MHz or 80MHz frequency segment during the transmission frame, and two bits B30 and B31 of the SS Allocation subfield are used to indicate whether one or two spatial streams are used in transmitting the dRU.

[0023] In some embodiments, a value of 00 in the two bits B26 and B27 of the SS allocation subfield indicates that the dRUs are transmitted in a 20 MHz frequency segment used by the dRU transmissions; a value of 01 in the two bits B26 and B27 of the SS allocation subfield indicates that the dRUs are transmitted in a 40 MHz frequency segment used by the dRU transmissions; a value of 10 in the two bits B26 and B27 of the SS allocation subfield indicates that the dRUs are transmitted in an 80 MHz frequency segment used by the dRU transmissions; and a value of 11 in the two bits B26 and B27 of the SS allocation subfield is reserved or indicates that the dRUs are transmitted in a 160 MHz frequency sub-block.

[0024] In some embodiments, a value of 01 in the two bits B26 and B27 of the SS allocation subfield indicates that the dRUs are transmitted in a 20 MHz frequency segment used by the dRU transmissions; a value of 10 in the two bits B26 and B27 of the SS allocation subfield indicates that the dRUs are transmitted in a 40 MHz frequency segment used by the dRU transmissions; a value of 11 in the two bits B26 and B27 of the SS allocation subfield indicates that the dRUs are transmitted in an 80 MHz frequency segment used by the dRU transmissions; and a value of 00 in the two bits B26 and B27 of the SS allocation subfield is reserved or indicates that the dRUs are transmitted in a 160 MHz frequency sub-block.

[0025] In a second aspect, the present disclosure provides an apparatus for distributed tone resource unit transmission, comprising a transceiver configured to perform wireless communication and a processor coupled to the transceiver, wherein the processor is configured to perform the following operations: generating a frame having an indication of a resource unit (RU) type and an indication of a distributed tone resource unit (dRU) distribution bandwidth; and transmitting, via the transceiver, the frame to another apparatus, wherein the RU type is indicated in a common information field or a special user information field of the frame, and the dRU distribution bandwidth is indicated in a spatial stream (SS) allocation subfield of a user information field of the frame.

[0026] Notably, while the description herein is provided in the context of certain radio access technologies, networks, and network topologies (e.g., Wi-Fi), the proposed concepts, schemes, and any variants / derivations thereof can be implemented in, used for, or by other types of radio access technologies, networks, and network topologies, such as, but not limited to, Bluetooth, ZigBee, Fifth Generation (5G) / New Radio (NR), Long-Term Evolution (LTE), LTE-Advanced, LTE-Advanced Pro, Internet-of-Thing (IoT), Industrial IoT (IIoT), and narrowband IoT (NB-IoT). Thus, the scope of the invention is not limited to the examples described herein.

[0027] These and other objects of the present invention will no doubt become obvious to those skilled in the art after a reading of the following detailed description of the preferred embodiments when read in conjunction with the drawings. The detailed description is intended as an illustration of the principles of the invention, and not as an attempt to limit the invention to one particular embodiment. BRIEF DESCRIPTION OF DRAWINGS

[0028] The present invention can be more fully understood with the following detailed description in conjunction with the accompanying drawings, in which:

[0029] Figure 1 is a schematic diagram of an example network environment in which various solutions and schemes according to the present invention can be implemented.

[0030] Figure 2 is a schematic diagram of an example design under the scheme proposed according to the present invention.

[0031] Figure 3 is a schematic diagram of an example design under the scheme proposed according to the present invention.

[0032] Figure 4 is a schematic diagram of an example design under the scheme proposed according to the present invention.

[0033] Figure 5 is a schematic diagram of an example design under the scheme proposed according to the present invention.

[0034] Figure 6is a schematic diagram of an example design under the scheme proposed by the present application.

[0035] Figure 7 is a schematic diagram of an example design under the scheme proposed by the present application.

[0036] Figure 8 is a schematic diagram of an example design under the scheme proposed by the present application.

[0037] Figure 9 is a schematic diagram of an example design under the scheme proposed by the present application.

[0038] Figure 10 is a block diagram of an example communication system according to an embodiment of the present application.

[0039] Figure 11 is a flowchart of an example process according to an embodiment of the present application.

[0040] In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the application. However, it will be apparent to one skilled in the art that one or more embodiments of the present application can be practiced without these specific details. In other instances, well-known methods, procedures, components, and circuits have not been described in detail so as not to unnecessarily obscure aspects of the embodiments. DETAILED DESCRIPTION

[0041] The following description is provided for the purpose of illustrating the general principles of the application, and is not meant to limit the present application in its broader, spirit or application. In the description of the present application, the following terminology is used in accordance with the definitions set forth below. The description and drawings are to be read in conjunction with the accompanying drawings as follows: The terms "coupled" and "coupling" mean the joining of two members directly or indirectly. Those of skill in the art will understand that these terms are not exclusive, and that "coupling" can occur for example, through an indirect couple or through an intermediate member. The term "application" as used herein means any of the following: a) a patent application; b) a provisional patent application; c) a non-provisional patent application; d) an international patent application; e) a national stage entry of an international patent application; f) a utility model patent application; g) a continuation, continuation-in-part, divisional, or national stage entry of a patent application; h) a design patent application; i) a reissue, patent plant, reexamination, or post-allowance application; j) a terminal disclaimer; k) an affidavit of compliance; and l) a declaration of inventorship.

[0042] Wherever possible, similar reference numerals are used in the drawings to depict similar elements and / or features of the application. It should be appreciated that for simplicity and clarity of illustration, elements that have the same functional purposes will be described with reference to the same reference numerals, and functions and operations that are the same will be described with reference to the same reference numerals. In addition, the drawings are not necessarily drawn to scale.

[0043] The term "substantially" or "approximately" as used herein refers to an acceptable range within which a person skilled in the art can solve the technical problem to be solved and substantially achieve the technical effect to be achieved. For example, "substantially equal" refers to a certain error from "exactly equal" in a manner acceptable to a person skilled in the art without affecting the correctness of the result.

[0044] SUMMARY

[0045] Embodiments according to the present application relate to various techniques, methods, schemes, and / or solutions related to detailed signaling design for dRU transmission in wireless communication. According to the present application, a plurality of feasible solutions can be implemented individually or jointly. That is, although the following describes these feasible solutions separately, two or more of these feasible solutions can be implemented in one combination or another combination.

[0046] It is noted that in the present disclosure, a regular RU (rRU) refers to a RU (resource unit) having contiguous and not staggered, interleaved, or distributed / distributed (distributed) tones. Further, a 26-tone regular RU (rRU) can be interchangeably denoted as RU26 (or rRU26), a 52-tone regular RU can be interchangeably denoted as RU52 (or rRU52), a 106-tone regular RU can be interchangeably denoted as RU106 (or rRU106), a 242-tone regular RU can be interchangeably denoted as RU242 (or rRU242), and so on. It is understood by one of ordinary skill in the art the meaning of regular RU (rRU) and distributed RU (dRU), e.g., a regular RU (rRU) consists of multiple tones that are contiguous in the physical frequency domain, and a dRU (distributed RU) consists of multiple tones (or interchangeably referred to as subcarriers) that are non-contiguous (i.e., scattered) in the physical frequency domain. It is understood that rRU26 refers to a resource unit (RU) that is allocated with 26 tones and the 26 tones are contiguous, and dRU26 refers to a resource unit (RU) that is allocated with 26 tones and the 26 tones are scattered. Further, a regular multi-RU (MRU) that aggregates (26+52) tones can be interchangeably denoted as MRU78 (or rMRU78), a regular MRU that aggregates (26+106) tones can be interchangeably denoted as MRU132 (or rMRU132), and so on. Further, in the present disclosure, a 26-tone distributed-tone RU (dRU) can be interchangeably denoted as dRU26, a 52-tone distributed-tone RU can be interchangeably denoted as dRU52, a 106-tone distributed-tone RU can be interchangeably denoted as dRU106, a 242-tone distributed-tone RU can be interchangeably denoted as dRU242, and so on. In addition, a distributed-tone MRU that aggregates (26+52) tones can be interchangeably denoted as dMRU78, a distributed-tone MRU that aggregates (26+106) tones can be interchangeably denoted as dMRU132, and so on.

[0047] As the above examples are merely illustrative examples and not an exhaustive list of all possibilities, this is equally applicable to regular RU (rRU), distributed-tone resource unit (dRU), MRU, and distributed-tone MRU (distributed-tone MRUs, dMRU) of different sizes / sizes (or different number of tones). It is also worth noting that in the present disclosure, a bandwidth of 20MHz can be interchangeably denoted as BW20, a bandwidth of 40MHz can be interchangeably denoted as BW40, a bandwidth of 80MHz can be interchangeably denoted as BW80, a bandwidth of 160MHz can be interchangeably denoted as BW160, a bandwidth of 240MHz can be interchangeably denoted as BW240, and a bandwidth of 320MHz can be interchangeably denoted as BW320. It can be appreciated that in the present disclosure, a bandwidth of 80MHz (BW80) can also be replaced by a 80MHz frequency sub-block (or frequency segment), e.g., two 80MHz frequency sub-blocks under a bandwidth of 160MHz, and so on. It is also worth noting that in the present disclosure, a 26-tone interleaved-tone or interlaced-tone RU can be interchangeably denoted as iRU26 and dRU26 (26-tone distributed-tone RU), a 52-tone interleaved-tone or interlaced-tone RU can be interchangeably denoted as iRU52 and dRU52 (52-tone distributed-tone RU), a 106-tone interleaved-tone or interlaced-tone RU can be interchangeably denoted as iRU106 and dRU106 (106-tone distributed-tone RU), a 242-tone interleaved-tone or interlaced-tone RU can be interchangeably denoted as iRU242 and dRU242 (242-tone distributed-tone RU), and a 484-tone interleaved-tone or interlaced-tone RU can be interchangeably denoted as iRU484 and dRU484 (484-tone distributed-tone RU). It is also worth noting that in the present disclosure, the concept of “RU type = dRU” is equivalent to dRU being enabled, and the concept of “RU type = rRU” is equivalent to dRU being disabled. Furthermore, the term “frequency segment” can be interchangeably referred to as “frequency sub-block” in the present disclosure. Moreover, for simplicity, the term “dRU” can represent both dRU and dMRU in the present disclosure, that is, the “dRU” described in the present disclosure can represent both distributed-tone RU and distributed-tone multi-RU, without being specifically directed to distributed-tone RU.

[0048] Figure 1An example network environment 100 in which various solutions and technical proposals according to the present application can be implemented is shown. Figures 2-11 Example implementations of various proposed solutions in the network environment 100 according to the present application are shown. Reference is made to Figures 1-11 The following description of various proposed solutions is provided.

[0049] Reference is made to Figure 1 The network environment 100 can involve wireless communication stations (STAs) 110 and 120. Each of the STAs 110 and 120 can be a non-access point (non-AP) STA, and optionally, each of the STAs 110 and 120 can function as an access point (AP) STA. In some cases, the STAs 110 and 120 can be associated with a basic service set (BSS) according to one or more IEEE 802.11 standards (e.g., IEEE 802.11be and future developed standards). According to various proposed solutions described below, each of the STAs 110 and 120 can be configured to communicate with each other utilizing detailed signaling design for dRU transmissions in wireless communications. That is, either or both of the STAs 110 and 120 can act as a “user” in the proposed solutions and examples described below. Notably, while various proposed solutions are described below individually or separately, in actual implementations, each proposed solution can be used individually or separately. Alternatively, some or all of the proposed solutions can be used jointly.

[0050] Under the scheme according to the present application, up to 4 bits bitmap in the Common Info field is used to indicate the RU type (e.g., to indicate whether it is a rRU or a dRU), 2 bits in the Spatial Stream (SS) Allocation subfield of the User Info field is used to indicate the dRU distribution bandwidth, and 1 or 2 bits in the Spatial Stream (SS) Allocation subfield of the User Info field is used to indicate the number of spatial streams in the case of dRU transmission. For example, regarding the 4 bits bitmap in the Common Info field, each bit can correspond to a respective 80MHz frequency segment or frequency subblock, and thus can be used to indicate whether the respective 80MHz frequency segment is for dRU or rRU. Regarding the 2 bits for the indication of the dRU distribution bandwidth, 2 bits in the bits B26-B31 of the SS Allocation subfield of the User Info field can be re-purposed for such indication. For the indication of the number of spatial streams with 1 or 2 bits, 1 or 2 bits in the bits B26-B31 of the SS Allocation subfield of the User Info field can be used for such indication.

[0051] Under the scheme according to the present application, each of the STA 110 and the STA 120 can generate / generate a frame (e.g., a trigger frame or a PPDU) with the indication of the RU type and the indication of the dRU distribution bandwidth. The RU type can be indicated in the Common Info field or a special User Info field of the frame (e.g., a trigger frame, a trigger frame of EHT or a future developed standard, which is not limited by the present application). The dRU distribution bandwidth can be indicated in the SS Allocation subfield of the User Info field of the frame. In addition, each of the STA 110 and the STA 120 can send the frame to the other STA (e.g., in a 6GHz LPI system).

[0052] Figure 2An example design 200 under the proposed scheme of the present application is shown. The design 200 (which shows the common information field of a frame, e.g., having at least bits B0~B63) can be the first option (Option 1) of the dRU type indication according to the present application. In the design 200, the RU type can be indicated by up to four non-consecutive bits in the common information field of a frame (e.g., an EHT frame, which can be a trigger frame). Referring to Figure 2 , the four non-consecutive bits can be bits B56~B59 in the reserved subfield (illustrated as “EHT Reserved” in the figure, which includes bits B56~B62) of the common information field. For example: (i) responsive to a transmission bandwidth of 20MHz, 40MHz or 80MHz, bit B56 can indicate the RU type as rRU or dRU (e.g., 1 indicates the RU type as rRU, 0 indicates the RU type as dRU) for the 20MHz, 40MHz or 80MHz bandwidth, while bits B57~B59 are reserved (illustrated as “rsvd:1” in the figure); (ii) responsive to a transmission bandwidth of 160MHz, each of bits B56 and B57 indicates the RU type for a respective 80MHz frequency segment of the two 80MHz frequency segments (e.g., bit B56 indicates the RU type for the 1st 80MHz, bit B57 indicates the RU type for the 2nd 80MHz), while bits B58 and B59 are reserved; and, (iii) responsive to a transmission bandwidth of 320MHz, each of bits B56~B59 indicates the RU type for a respective 80MHz frequency segment of the four 80MHz frequency segments, e.g., bit B56 indicates the RU type for the 1st 80MHz, bit B57 indicates the RU type for the 2nd 80MHz, bit B58 indicates the RU type for the 3rd 80MHz, and bit B59 indicates the RU type for the 4th 80MHz.

[0053] Optionally, the four consecutive bits may also be bits B59–B62 of the EHT reserved subfield (also described as a “reserved subfield”) of the common information field. In this case: (i) in response to a transmission bandwidth of 20 MHz, 40 MHz, or 80 MHz, bit B59 may indicate the RU type of the 20 MHz, 40 MHz, or 80 MHz bandwidth as rRU or dRU, while bits B60–B62 are reserved; (ii) in response to a transmission bandwidth of 160 MHz, each of bits B59 and B60 may be used to indicate the RU type of the corresponding 80 MHz frequency band in the two 80 MHz frequency bands, while bits B61 and B62 are reserved; and (iii) in response to a transmission bandwidth of 320 MHz, each of bits B59–B62 may be used to indicate the RU type of the corresponding 80 MHz frequency band in the four 80 MHz frequency bands.

[0054] Figure 3 An example design 300 according to a proposed scheme of the present invention is shown. Design 300 (which shows bits B0-B63 of the common information field of a frame) can be a second option (option 2) for the dRU type indication according to the present invention. In design 300, the RU type can be indicated by up to four non-consecutive bits in the common information field. Reference Figure 3 The RU type can be indicated by up to four non-contiguous bits in the common information field. For example: (i) in response to a transmission bandwidth of 20 MHz, 40 MHz, or 80 MHz, bit B22 in the reserved subfield of the common information field can be used to indicate that the RU type for a 20 MHz, 40 MHz, or 80 MHz bandwidth is rRU or dRU, while bits B26, B53, and B63 are reserved; (ii) in response to a transmission bandwidth of 160 MHz, each of bits B22 and B26 can be used to indicate the RU type for the corresponding 80 MHz frequency band in the two 80 MHz frequency bands, while bits B53 and B63 are reserved; and (iii) in response to a transmission bandwidth of 320 MHz, each of bits B22, B26, B53, and B63 can be used to indicate the RU type for the corresponding 80 MHz frequency band in the four 80 MHz frequency bands.

[0055] Figure 4 An example design 400 according to a proposed scheme of the present invention is shown. Design 400 (which shows bits B0-B63 of the common information field of the frame) can be a third option (option 3) for dRU type indication according to the present invention. In design 400, the RU type can be indicated by up to four non-consecutive bits in the common information field. Reference Figure 4RU Type can be indicated by up to four non-consecutive bits in the common information field. For example: (i) in response to a 20MHz, 40MHz or 80MHz transmission bandwidth, bit B53 or B63 in the reserved subfield of the common information field can be used to indicate the RU Type for the 20MHz, 40MHz or 80MHz bandwidth as rRU or dRU, while bits B20, B21, B22 and B26 are reserved; (ii) for example, 4x EHT-LTF mode and 3.2us gap interval (GI) for dRU transmission, in response to a 160MHz transmission bandwidth, each of bits B20 and B21 in the gap interval (GI) and High-Efficiency (HE) / Extremely-High-Efficiency (EHT)-Long Training Field (LTF) Type / Triggered TXOP Sharing Mode subfield of the common information field can be used to indicate the RU Type for the respective 80MHz frequency segment of the two 80MHz frequency segments, while bits B22 and B26 are reserved, and, bit B53 or B63 can be used to indicate the RU Type for at least one 80MHz frequency segment as dRU (as illustrated as “1 :w / dRU” in Table 1); and (iii) in response to a 320MHz transmission bandwidth, each of bits B20, B21, B22 and B26 can be used to indicate the RU Type for the respective 80MHz frequency segment of the four 80MHz frequency segments, while bit B53 or B63 can be used to indicate the RU Type for at least one 80MHz frequency segment as dRU. Figure 4

[0056] Figure 5 An example design 500 under the proposed scheme according to the present application is shown. The design 500 can be the fourth option (Option 4) for the dRU Type indication according to the present application. In the design 500 (which shows bits B0~B63 of the common information field and bits B0~B39 of the special user information field), the RU Type can be indicated by up to four non-consecutive bits in the combination of the common information field and the special user information field of the frame. Referring to Figure 5 ​RU type can be indicated by up to four non-consecutive bits in the common information field and the special user information field. For example: (i) in response to a 20MHz, 40MHz or 80MHz transmission bandwidth, bit B63 in the reserved subfield of the common information field (labeled as "Reserved" in the figure) can be used to indicate the RU type for the 20MHz, 40MHz or 80MHz bandwidth as rRU or dRU, while bits B37-B39 in the reserved subfield of the special user information field are reserved; (ii) in response to a 160MHz transmission bandwidth, each of bit B63 in the reserved subfield of the common information field and bit B37 in the reserved subfield of the special user information field can be used to indicate the RU type for a corresponding 80MHz frequency segment of the two 80MHz frequency segments, while bits B38 and B39 in the reserved subfield of the special user information field are reserved; (iii) in response to a 320MHz transmission bandwidth, each of bit B63 in the reserved subfield of the common information field and bits B37-B39 in the reserved subfield of the special user information field can be used to indicate the RU type for a corresponding 80MHz frequency segment of the four 80MHz frequency segments.

[0057] Figure 6 An example design 600 under the proposed scheme of the present application is shown. The design 600 can be the fifth option (Option 5) for dRU type indication according to the present application. In the design 600 (which shows bits B0-B39 of the special user information field), the RU type can be indicated by up to four consecutive bits in the special user information field. Referring to Figure 6 , the four consecutive bits can include bits B25-B28 in the Universal Signal (U-SIG) Disregard and Validate subfield of the special user information field. In some embodiments: (i) in response to a 20MHz, 40MHz or 80MHz transmission bandwidth, bit B25 can be used to indicate the RU type for the 20MHz, 40MHz or 80MHz bandwidth as rRU or dRU, while bits B26-B28 are reserved; (ii) in response to a 160MHz transmission bandwidth, each of bits B25 and B26 can be used to indicate the RU type for a corresponding 80MHz frequency segment of the two 80MHz frequency segments, while bits B27 and B28 are reserved; (iii) in response to a 320MHz transmission bandwidth, each of bits B25-B28 can be used to indicate the RU type for a corresponding 80MHz frequency segment of the four 80MHz frequency segments.

[0058] Figure 7An example design 700 according to a proposed scheme based on the present invention is shown. Design 700 (which shows bits B0-B39 of the user information field) relates to indicating the dRU distributed bandwidth in the SS allocation subfield of the user information field of a frame. Reference Figure 7 Two of the four bits B26–B29 in the SS allocation subfield of the user information field can be used to indicate the dRU distributed bandwidth. Furthermore, one or both bits B30 and B31 in the SS allocation subfield of the user information field can be used to indicate the number of spatial streams used in the dRU transmission. In other words, under the proposed scheme, the dRU distributed bandwidth can be indicated by three or four bits in the SS allocation subfield of the user information field.

[0059] Figure 8 An example design 800 according to a proposed scheme of the present invention is shown. Design 800 (which shows bits B0 to B39 of the user information field) relates to a first option (option 1) and a second option (option 2) of the dRU distributed bandwidth indication according to the present invention. In option 1 of the dRU distributed bandwidth indication: (a) two bits B26 and B27 in the SS allocation subfield of the user information field indicate the size (also described as “size”) of the frequency band or frequency subblock used for dRU transmission during the transmission of a frame (e.g., in some examples, the transmission of a frame can be a mixed-mode transmission, such as some users transmitting rRUs and some users transmitting dRUs, i.e., the transmission of a frame can include dRUs and rRUs, but the invention is not limited thereto; for example, in some examples, the transmission of a frame can also be entirely dRUs); and (b) a bit B31 in the SS allocation subfield indicates whether one spatial stream or two spatial streams are used during the transmission of dRUs (e.g., “0” indicates one spatial stream, “1” indicates two spatial streams, and vice versa). In option 2 of the dRU distributed bandwidth indication: (a) two bits B29 and B30 of the SS allocation subfield indicate the size of the frequency segment or frequency subblock used for dRU transmission during the transmission frame; and (b) one bit B31 of the SS allocation subfield indicates whether one space stream or two space streams are used during dRU transmission (e.g., "0" indicates one space stream, "1" indicates two space streams, and vice versa).

[0060] In Option 1 : (i) the value 00 of the two bits B26 and B27 of the SS assignment subfield can be used to indicate that the dRU is transmitted in a 20 MHz frequency segment used by the dRU transmission; (ii) the value 01 of the two bits B26 and B27 of the SS assignment subfield can be used to indicate that the dRU is transmitted in a 40 MHz frequency segment used by the dRU transmission; (iii) the value 10 of the two bits B26 and B27 of the SS assignment subfield can be used to indicate that the dRU is transmitted in an 80 MHz frequency segment used by the dRU transmission; and, (iv) the value 11 of the two bits B26 and B27 of the SS assignment subfield can be reserved or can be used to indicate that the dRU is transmitted in a 160 MHz frequency sub-block. Alternatively, in Option 1 : (i) the value 01 of the two bits B26 and B27 of the SS assignment subfield can be used to indicate (may also be described as "to indicate") that the dRU is transmitted in a 20 MHz frequency segment used by the dRU transmission; (ii) the value 10 of the two bits B26 and B27 of the SS assignment subfield can be used to indicate that the dRU is transmitted in a 40 MHz frequency segment used by the dRU transmission; (iii) the value 11 of the two bits B26 and B27 of the SS assignment subfield can be used to indicate that the dRU is transmitted in an 80 MHz frequency segment used by the dRU transmission; and, (iv) the value 00 of the two bits B26 and B27 of the SS assignment subfield can be reserved or can be used to indicate that the dRU is transmitted in a 160 MHz frequency sub-block.

[0061] In Option 2: (i) the value 00 of the two bits B29 and B30 of the SS assignment subfield can be used to indicate that the dRU is transmitted in a 20 MHz frequency segment used by the dRU transmission; (ii) the value 01 of the two bits B29 and B30 of the SS assignment subfield can be used to indicate that the dRU is transmitted in a 40 MHz frequency segment used by the dRU transmission; (iii) the value 10 of the two bits B29 and B30 of the SS assignment subfield can be used to indicate that the dRU is transmitted in an 80 MHz frequency segment used by the dRU transmission; and, (iv) the value 11 of the two bits B29 and B30 of the SS assignment subfield can be reserved or can be used to indicate that the dRU is transmitted in a 160 MHz frequency sub-block. Alternatively, in Option 2: (i) the value 01 of the two bits B29 and B30 of the SS assignment subfield can be used to indicate (may also be described as "to indicate") that the dRU is transmitted in a 20 MHz frequency segment used by the dRU transmission; (ii) the value 10 of the two bits B29 and B30 of the SS assignment subfield can be used to indicate that the dRU is transmitted in a 40 MHz frequency segment used by the dRU transmission; (iii) the value 11 of the two bits B29 and B30 of the SS assignment subfield can be used to indicate that the dRU is transmitted in an 80 MHz frequency segment used by the dRU transmission; and, (iv) the value 00 of the two bits B29 and B30 of the SS assignment subfield can be reserved or can be used to indicate that the dRU is transmitted in a 160 MHz frequency sub-block.

[0062] Figure 9 An example design 900 under the proposed scheme according to the present application is shown. The design 900 (which shows bits B0-B39 of the user info field) is related to the third option (Option 3) and the fourth option (Option 4) of the dRU distribution bandwidth indication according to the present application. In Option 3 of the dRU distribution bandwidth indication: (a) during the transmission of a frame (e.g., dRU), two bits B26 and B27 of the SS allocation subfield can be used to indicate whether the dRU is transmitted in a 20MHz, 40MHz, 80MHz or 160MHz frequency segment, and (b) two bits B30 and B31 of the SS allocation subfield can be used to indicate whether one spatial stream or two spatial streams are used during the transmission of the dRU (e.g., "00" for one spatial stream, "01" for two spatial streams, where "10" and "11" are reserved). In Option 4 of the dRU distribution bandwidth indication: (a) during the transmission of a frame (e.g., dRU), two bits B28 and B29 of the SS allocation subfield can be used to indicate whether the dRU is transmitted in a 20MHz, 40MHz, 80MHz or 160MHz frequency segment, and (b) two bits B30 and B31 of the SS allocation subfield can be used to indicate whether one spatial stream or two spatial streams are used during the transmission of the dRU (e.g., "00" for one spatial stream, "01" for two spatial streams, where "10" and "11" are reserved).

[0063] In Option 3: (i) a value of 00 in the two bits B26 and B27 of the SS Allocation subfield can be used to indicate that the dRU is transmitted in a 20 MHz frequency segment used by the dRU transmission; (ii) a value of 01 in the two bits B26 and B27 of the SS Allocation subfield can be used to indicate that the dRU is transmitted in a 40 MHz frequency segment used by the dRU transmission; (iii) a value of 10 in the two bits B26 and B27 of the SS Allocation subfield can be used to indicate that the dRU is transmitted in an 80 MHz frequency segment used by the dRU transmission; and, (iv) a value of 11 in the two bits B26 and B27 of the SS Allocation subfield can be reserved or can be used to indicate that the dRU is transmitted in a 160 MHz frequency sub-block. Alternatively, in Option 3: (i) a value of 01 in the two bits B26 and B27 of the SS Allocation subfield can be used to indicate that the dRU is transmitted in a 20 MHz frequency segment used by the dRU transmission; (ii) a value of 10 in the two bits B26 and B27 of the SS Allocation subfield can be used to indicate that the dRU is transmitted in a 40 MHz frequency segment used by the dRU transmission; (iii) a value of 11 in the two bits B26 and B27 of the SS Allocation subfield can be used to indicate that the dRU is transmitted in an 80 MHz frequency segment used by the dRU transmission; and, (iv) a value of 00 in the two bits B26 and B27 of the SS Allocation subfield can be reserved or can be used to indicate that the dRU is transmitted in a 160 MHz frequency sub-block.

[0064] In Option 4: (i) the value 00 in the two bits B28 and B29 of the SS Allocation subfield can be used to indicate that the dRU is transmitted in a 20 MHz frequency segment used by the dRU transmission; (ii) the value 01 in the two bits B28 and B29 of the SS Allocation subfield can be used to indicate that the dRU is transmitted in a 40 MHz frequency segment used by the dRU transmission; (iii) the value 10 in the two bits B28 and B29 of the SS Allocation subfield can be used to indicate that the dRU is transmitted in an 80 MHz frequency segment used by the dRU transmission; and (iv) the value 11 in the two bits B28 and B29 of the SS Allocation subfield can be reserved, or can be used to indicate that the dRU is transmitted in a 160 MHz frequency sub-block. Alternatively, in Option 4: (i) the value 01 in the two bits B28 and B29 of the SS Allocation subfield can be used to indicate that the dRU is transmitted in a 20 MHz frequency segment used by the dRU transmission; (ii) the value 10 in the two bits B28 and B29 of the SS Allocation subfield can be used to indicate that the dRU is transmitted in a 40 MHz frequency segment used by the dRU transmission; (iii) the value 11 in the two bits B28 and B29 of the SS Allocation subfield can be used to indicate that the dRU is transmitted in an 80 MHz frequency segment used by the dRU transmission; and (iv) the value 00 in the two bits B28 and B29 of the SS Allocation subfield can be reserved, or can be used to indicate that the dRU is transmitted in a 160 MHz frequency sub-block.

[0065] Illustrative Implementations

[0066] Figure 10 An example system 1000 is shown having at least example device 1010 and example device 1020 in accordance with implementations of the present application. Each of devices 1010 and 1020 can perform various functions to implement the schemes, techniques, processes, and methods described herein related to detailed signaling design for dRU transmissions in wireless communications, including the various schemes described above with respect to the various proposed designs, concepts, schemes, systems, and methods, as well as the processes described below. For example, device 1010 can be implemented in STA 110, and device 1020 can be implemented in STA 120; or vice versa.

[0067] Each of the apparatus 1010 and the apparatus 1020 can be part of an electronic device, which can be a non-AP STA or an AP STA, such as a portable or mobile device, a wearable device, a wireless communication device, or a computing device. For example, when implemented in a STA, each of the apparatus 1010 and the apparatus 1020 can be implemented in a smartphone, a smartwatch, a personal digital assistant, a digital camera, or a computing device such as a tablet computer, a laptop computer, or a notebook computer. Each of the apparatus 1010 and the apparatus 1020 can also be part of a machine-type device, which can be an IoT device such as a fixed or stationary device, a home device, a wired communication device, or a computing device. For example, each of the apparatus 1010 and the apparatus 1020 can 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, the apparatus 1010 and / or the apparatus 1020 can be implemented in a network node, such as an AP in a WLAN.

[0068] In some implementations, each of the apparatus 1010 and the apparatus 1020 can 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 scenarios described above, each of the apparatus 1010 and the apparatus 1020 can be implemented in or as a STA or an AP. Each of the apparatus 1010 and the apparatus 1020 can include at least some of the components shown in FIG. 10, such as the processor 1012 and the processor 1022. Figure 10 Each of the apparatus 1010 and the apparatus 1020 can also include one or more other components that are not pertinent to the schemes presented by the present disclosure (e.g., an internal power supply, a display device, and / or a user interface device), and thus, for simplicity and brevity, none of such components of the apparatus 1010 and the apparatus 1020 are shown in FIG. 10, nor are they described below. Figure 10

[0069] ​In an aspect, each of the processor 1012 and the processor 1022 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 the processor 1012 and the processor 1022, according to the present application, each of the processor 1012 and the processor 1022 can comprise multiple processors and can comprise a single processor in some implementations. In another aspect, each of the processor 1012 and the processor 1022 can be implemented in the form of hardware (and, optionally, firmware) having electronic components, including, 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 accomplish particular purposes, according to the present application. In other words, in at least some implementations, each of the processor 1012 and the processor 1022 is a special purpose machine specially designed, arranged, and configured to perform particular tasks, including tasks related to detailed signaling design for dRU transmissions in wireless communications according to various implementations of the present application.

[0070] In some implementations, the apparatus 1010 can also include a transceiver 1016 coupled to the processor 1012. The transceiver 1016 is capable of wirelessly transmitting and receiving data. In some implementations, the apparatus 1020 can also include a transceiver 1026 coupled to the processor 1022. The transceiver 1026 includes a transceiver capable of wirelessly transmitting and receiving data. Notably, while the transceiver 1016 and the transceiver 1026 are shown as being external to and separate from the processor 1012 and the processor 1022, respectively, in some implementations, the transceiver 1016 can be an integral part of the processor 1012 as a system on chip (SoC) and / or the transceiver 1026 can be an integral part of the processor 1022 as a SoC.

[0071] In some implementations, the apparatus 1010 can further include a memory 1014 coupled to the processor 1012, which is accessible to the processor 1012 and in which the processor 1012 stores data. In some implementations, the apparatus 1020 can also include a memory 1024 coupled to the processor 1022 and accessible to the processor 1022 and in which the processor 1022 stores data. Each of the memory 1014 and the memory 1024 can include a type of 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 the memory 1014 and the memory 1024 can 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 the memory 1014 and the memory 1024 can 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.

[0072] Each of the apparatus 1010 and the apparatus 1020 can be a communication entity capable of communicating with each other using various proposed schemes according to the present application. For illustrative purposes and not limitation, a description of the capabilities of the apparatus 1010 as a STA 110 and the apparatus 1020 as a STA 120 is provided below. It is noted that while a detailed description of the capabilities, functionalities and / or technical features of the apparatus 1020 is provided below, the same can apply to the apparatus 1010 as well, although a detailed description thereof is not provided merely for the sake of brevity. It is also noted that while the example embodiments described below are provided in the context of a WLAN, the same can be implemented in other types of networks as well.

[0073] Under various proposed schemes related to detailed signaling design for dRU transmission in wireless communications according to the present application, in the network environment 100, the apparatus 1010 is implemented in a STA 110 functioning as a non-AP STA or as a STA 110, and the apparatus 1020 is implemented in a STA 120 functioning as an AP STA or as a STA 120, the processor 1022 of the apparatus 1020 generates a frame (e.g., a trigger frame or a PPDU) having an indication of a RU type and an indication of a dRU distribution bandwidth. The RU type can be indicated in a common information field or a special user information field of the frame. The dRU distribution bandwidth can be indicated in an SS allocation subfield of a user information field of the frame. Further, the processor 1022 transmits the frame to another apparatus (e.g., the apparatus 1010) via the transceiver 1026.

[0074] In some embodiments, the RU type can be indicated by up to four consecutive bits in the common information field.

[0075] In some embodiments, the four consecutive bits can include bits B56-B59 in a reserved subfield of the common information field. In some embodiments: (i) in response to a transmission bandwidth of 20MHz, 40MHz or 80MHz, bit B56 can be used to indicate the RU type for the 20MHz, 40MHz or 80MHz bandwidth as rRU or dRU, while bits B57-B59 are reserved; (ii) in response to a transmission bandwidth of 160MHz, each of bits B56 and B57 can indicate the RU type for a respective 80MHz frequency segment of the two 80MHz frequency segments, while bits B58 and B59 are reserved; and (iii) in response to a transmission bandwidth of 320MHz, each of bits B56-B59 can be used to indicate the RU type for a respective 80MHz frequency segment of the four 80MHz frequency segments.

[0076] In some embodiments, the four consecutive bits can include bits B59-B62 in the reserved subfield of the common information field. In some embodiments: (i) in response to a 20MHz, 40MHz, or 80MHz transmission bandwidth, bit B59 can be used to indicate the RU type for the 20MHz, 40MHz, or 80MHz bandwidth as rRU or dRU, while bits B60-B62 are reserved; (ii) in response to a 160MHz transmission bandwidth, each of bits B59 and B60 can be used to indicate the RU type for a respective 80MHz frequency segment of the two 80MHz frequency segments, while bits B61 and B62 are reserved; and, (iii) in response to a 320MHz transmission bandwidth, each of bits B59-B62 can be used to indicate the RU type for a respective 80MHz frequency segment of the four 80MHz frequency segments.

[0077] In some embodiments, the four consecutive bits can include bits B25-B28 in the U-SIG (Universal Signaling) ignore and validation subfield of the special user information field. In some embodiments: (i) in response to a 20MHz, 40MHz, or 80MHz transmission bandwidth, bit B25 can be used to indicate the RU type for the 20MHz, 40MHz, or 80MHz bandwidth as rRU or dRU, while bits B26-B28 are reserved; (ii) in response to a 160MHz transmission bandwidth, each of bits B25 and B26 can be used to indicate the RU type for a respective 80MHz frequency segment of the two 80MHz frequency segments, while bits B27 and B28 are reserved; and, (iii) in response to a 320MHz transmission bandwidth, each of bits B25-B28 can be used to indicate the RU type for a respective 80MHz frequency segment of the four 80MHz frequency segments.

[0078] In some embodiments, the RU type can be indicated by up to four non-consecutive bits in the common information field of the frame or by up to four non-consecutive bits in a combination of the common information field and the special user information field.

[0079] In some embodiments: (i) in response to a 20MHz, 40MHz, or 80MHz transmission bandwidth, bit B22 in the reserved subfield of the common info field can be used to indicate the RU type for the 20MHz, 40MHz, or 80MHz bandwidth is rRU or dRU, while bits B26, B53, B63 are reserved; (ii) in response to a 160MHz transmission bandwidth, each of bits B22 and B26 can be used to indicate the RU type for a respective 80MHz frequency segment of the two 80MHz frequency segments, while bits B53 and B63 are reserved; and, (iii) in response to a 320MHz transmission bandwidth, each of bits B22, B26, B53, and B63 can be used to indicate the RU type for a respective 80MHz frequency segment of the four 80MHz frequency segments.

[0080] Alternatively: (i) in response to a 20MHz, 40MHz, or 80MHz transmission bandwidth, bit B53 or B63 in the reserved subfield of the common info field can be used to indicate the RU type for the 20MHz, 40MHz, or 80MHz bandwidth is rRU or dRU, while bits B20, B21, B22, and B26 are reserved; (ii) in response to a 160MHz transmission bandwidth, each of bits B20 and B21 in the GI and HE / EHT-LTF type / triggered TXOP sharing mode subfield of the common info field can be used to indicate the RU type for a respective 80MHz frequency segment of the two 80MHz frequency segments, while bits B22 and B26 can be reserved, and bit B53 or B63 can indicate the RU type for at least one 80MHz frequency segment is dRU; and, (iii) in response to a 320MHz transmission bandwidth, each of bits B20, B21, B22, and B26 can be used to indicate the RU type for a respective 80MHz frequency segment of the four 80MHz frequency segments, while bit B53 or B63 can indicate the RU type for at least one 80MHz frequency segment is dRU.

[0081] Optionally: (i) in response to a 20MHz, 40MHz, or 80MHz transmission bandwidth, bit B63 in the reserved subfield of the common information field can be used to indicate the RU type for the 20MHz, 40MHz, or 80MHz bandwidth as rRU or dRU, while bits B37-B39 in another reserved subfield of the special user information field can be reserved; (ii) in response to a 160MHz transmission bandwidth, each of bit B63 in the reserved subfield of the common information field and bit B37 in the reserved subfield of the special user information field can be used to indicate the RU type for a respective 80MHz frequency segment of the two 80MHz frequency segments, while bits B38 and B39 can be reserved; and (iii) in response to a 320MHz transmission bandwidth, each of bit B63 in the reserved subfield of the common information field and bits B37-B39 in the reserved subfield of the special user information field can be used to indicate the RU type for a respective 80MHz frequency segment of the four 80MHz frequency segments.

[0082] In some embodiments, the dRU distribution bandwidth can be indicated by three or four bits in the SS allocation subfield of the user information field.

[0083] In some embodiments: (a) two bits B26 and B27 of the SS allocation subfield can indicate the size of the frequency segment used in the dRU transmission when the frame is transmitted; and (b) one bit B31 of the SS allocation subfield can indicate whether one spatial stream or two spatial streams are used in transmitting the dRU. In some embodiments: (i) a value of 00 in the two bits B26 and B27 of the SS allocation subfield can indicate that the dRU is transmitted in a 20 MHz frequency segment used by the dRU transmission; (ii) a value of 01 in the two bits B26 and B27 of the SS allocation subfield can indicate that the dRU is transmitted in a 40 MHz frequency segment used by the dRU transmission; (iii) a value of 10 in the two bits B26 and B27 of the SS allocation subfield can indicate that the dRU is transmitted in an 80 MHz frequency segment used by the dRU transmission; and (iv) a value of 11 in the two bits B26 and B27 of the SS allocation subfield can be reserved or can indicate that the dRU is transmitted in a 160 MHz frequency sub-block. Alternatively: (i) a value of 01 in the two bits B26 and B27 of the SS allocation subfield can indicate that the dRU is transmitted in a 20 MHz frequency segment used by the dRU transmission; (ii) a value of 10 in the two bits B26 and B27 of the SS allocation subfield can indicate that the dRU is transmitted in a 40 MHz frequency segment used by the dRU transmission; (iii) a value of 11 in the two bits B26 and B27 of the SS allocation subfield can indicate that the dRU is transmitted in an 80 MHz frequency segment used by the dRU transmission; and (iv) a value of 00 in the two bits B26 and B27 of the SS allocation subfield can be reserved or can indicate that the dRU is transmitted in a 160 MHz frequency sub-block.

[0084] In some embodiments: (a) during transmission of a frame, two bits B26 and B27 of the SS Allocation subfield can be used to indicate whether the dRU is transmitted in a 20 MHz, 40 MHz, 80 MHz, or 160 MHz frequency segment, and (b) two bits B30 and B31 of the SS Allocation subfield can indicate whether one spatial stream or two spatial streams are used in transmitting the dRU. In some embodiments: (i) a value of 00 in the two bits B26 and B27 of the SS Allocation subfield can indicate that the dRU is transmitted in a 20 MHz frequency segment used by the dRU transmission; (ii) a value of 01 in the two bits B26 and B27 of the SS Allocation subfield can indicate that the dRU is transmitted in a 40 MHz frequency segment used by the dRU transmission; (iii) a value of 10 in the two bits B26 and B27 of the SS Allocation subfield can indicate that the dRU is transmitted in an 80 MHz frequency segment used by the dRU transmission; and, (iv) a value of 11 in the two bits B26 and B27 of the SS Allocation subfield can be reserved or can indicate that the dRU is transmitted in a 160 MHz frequency sub-block. Alternatively: (i) a value of 01 in the two bits B26 and B27 of the SS Allocation subfield can indicate that the dRU is transmitted in a 20 MHz frequency segment used by the dRU transmission; (ii) a value of 10 in the two bits B26 and B27 of the SS Allocation subfield can indicate that the dRU is transmitted in a 40 MHz frequency segment used by the dRU transmission; (iii) a value of 11 in the two bits B26 and B27 of the SS Allocation subfield can indicate that the dRU is transmitted in an 80 MHz frequency segment used by the dRU transmission; and, (iv) a value of 00 in the two bits B26 and B27 of the SS Allocation subfield can be reserved or can indicate that the dRU is transmitted in a 160 MHz frequency sub-block.

[0085] Illustrative procedure

[0086] Figure 11 An example procedure 1100 in accordance with an embodiment of the present application is shown. The procedure 1100 can be representative of one aspect of implementing the various proposed designs, concepts, schemes, systems, and methods described above. More specifically, the procedure 1100 can be representative of one aspect of the concepts and schemes proposed in relation to detailed signaling design for dRU transmission in wireless communications in accordance with the present application. The procedure 1100 can include one or more operations, actions, or functions as shown in one or more of blocks (which can also be described as "steps") 1110 and 1120. Although illustrated as discrete blocks, each block of the procedure 1100 can be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Also, the blocks / sub-blocks of the procedure 1100 can be performed in any order, including in parallel, depending on the desired implementation. Figure 11The order in which the operations are executed, or the order in which the operations are described, should not be construed as a limitation. Further, one or more of the blocks / sub-blocks of the process 1100 can be repeated or iterated. The process 1100 can be implemented by or in the apparatuses 1010 and 1020 and any variants thereof. For illustrative purposes and without limitation, the process 1100 is described below in a scenario where the apparatus 1010 is implemented as or as a STA 110 (operating as a non-AP STA) and the apparatus 1020 is implemented as or as a STA 120 (operating as an AP STA) in accordance with one or more IEEE 802.11 standards, such as a WLAN in the network environment 110. The process 1100 can begin at block 1110.

[0087] At block 1110, the process 1100 can include the apparatus 1020 (e.g., the processor 1022 of the apparatus 1020) generating a frame (e.g., a trigger frame or a PPDU) having an indication of a RU type and an indication of a dRU distribution bandwidth. The RU type can be indicated in a common information field or a special user information field of the frame. The dRU distribution bandwidth can be indicated in an SS allocation subfield of a user information field of the frame. The process 1100 can proceed from 1110 to 1120.

[0088] At block 1120, the process 1100 can include the apparatus 1020 (e.g., the processor 1022) transmitting, via the transceiver 1026, the frame to another apparatus (e.g., the apparatus 1010).

[0089] In some implementations, the RU type can be indicated by up to four consecutive bits in the common information field.

[0090] In some implementations, the four consecutive bits can include bits B56-B59 in a reserved subfield of the common information field. In some implementations: (i) in response to a transmission bandwidth of 20 MHz, 40 MHz, or 80 MHz, bit B56 can indicate the RU type for the 20 MHz, 40 MHz, or 80 MHz bandwidth as rRU or dRU, and bits B57-B59 are reserved; (ii) in response to a transmission bandwidth of 160 MHz, each of bits B56 and B57 can indicate the RU type for a respective 80 MHz frequency segment of the two 80 MHz frequency segments, and bits B58 and B59 are reserved; and (iii) in response to a transmission bandwidth of 320 MHz, each of bits B56-B59 can indicate the RU type for a respective 80 MHz frequency segment of the four 80 MHz frequency segments.

[0091] In some embodiments, the four consecutive bits can include bits B59-B62 in the reserved subfield of the common information field. In some embodiments: (i) in response to a transmission bandwidth of 20MHz, 40MHz, or 80MHz, bit B59 can indicate the RU type for the 20MHz, 40MHz, or 80MHz bandwidth as rRU or dRU, while bits B60-B62 are reserved; (ii) in response to a transmission bandwidth of 160MHz, each of bits B59 and B60 can indicate the RU type for a respective 80MHz frequency segment of the two 80MHz frequency segments, while bits B61 and B62 are reserved; and (iii) in response to a transmission bandwidth of 320MHz, each of bits B59-B62 can indicate the RU type for a respective 80MHz frequency segment of the four 80MHz frequency segments.

[0092] In some embodiments, the four consecutive bits can include bits B25-B28 in the U-SIG (Universal Signaling) ignore and validation subfield of the special user information field. In some embodiments: (i) in response to a transmission bandwidth of 20MHz, 40MHz, or 80MHz, bit B25 can indicate the RU type for the 20MHz, 40MHz, or 80MHz bandwidth as rRU or dRU, while bits B26-B28 are reserved; (ii) in response to a transmission bandwidth of 160MHz, each of bits B25 and B26 can indicate the RU type for a respective 80MHz frequency segment of the two 80MHz frequency segments, while bits B27 and B28 are reserved; and (iii) in response to a transmission bandwidth of 320MHz, each of bits B25-B28 can indicate the RU type for a respective 80MHz frequency segment of the four 80MHz frequency segments.

[0093] In some embodiments, the RU type can be indicated by up to four non-consecutive bits in the common information field of the frame or by up to four non-consecutive bits in a combination of the common information field and the special user information field.

[0094] In some embodiments: (i) in response to a transmission bandwidth of 20MHz, 40MHz, or 80MHz, bit B22 in the reserved subfield of the common information field can indicate the RU type for the 20MHz, 40MHz, or 80MHz bandwidth as rRU or dRU, while bits B26, B53, B63 are reserved; (ii) in response to a transmission bandwidth of 160MHz, each of bits B22 and B26 can indicate the RU type for a respective 80MHz frequency segment of the two 80MHz frequency segments, while bits B53 and B63 are reserved; and (iii) in response to a transmission bandwidth of 320MHz, each of bits B22, B26, B53, and B63 can indicate the RU type for a respective 80MHz frequency segment of the four 80MHz frequency segments.

[0095] Optionally: (i) in response to a transmission bandwidth of 20MHz, 40MHz, or 80MHz, bit B53 or B63 in the reserved subfield of the common information field can indicate the RU type for the 20MHz, 40MHz, or 80MHz bandwidth as rRU or dRU, while bits B20, B21, B22, and B26 are reserved; (ii) in response to a transmission bandwidth of 160MHz, each of bits B20 and B21 in the GI and HE / EHT-LTF type / triggered TXOP shared mode subfield of the common information field can indicate... (iii) In response to a transmission bandwidth of 320 MHz, each of bits B20, B21, B22 and B26 may indicate the RU type of the corresponding 80 MHz frequency band in the four 80 MHz frequency bands, while bit B53 or B63 may indicate that the RU type of at least one 80 MHz frequency band is dRU; and (iii) In response to a transmission bandwidth of 320 MHz, each of bits B20, B21, B22 and B26 may indicate the RU type of the corresponding 80 MHz frequency band in the four 80 MHz frequency bands, while bit B53 or B63 may indicate that the RU type of at least one 80 MHz frequency band is dRU.

[0096] Optionally: (i) in response to a transmission bandwidth of 20MHz, 40MHz, or 80MHz, bit B63 in the reserved subfield of the common information field can indicate the RU type for the 20MHz, 40MHz, or 80MHz bandwidth as rRU or dRU, while bits B37 to B39 in another reserved subfield of the special user information field can be reserved; (ii) in response to a transmission bandwidth of 160MHz, each of bit B63 in the reserved subfield of the common information field and bit B37 in the reserved subfield of the special user information field can indicate the RU type of the corresponding 80MHz frequency band in the two 80MHz frequency bands, while bits B38 and B39 can be reserved; and (iii) in response to a transmission bandwidth of 320MHz, each of bit B63 in the reserved subfield of the common information field and bits B37 to B39 in the reserved subfield of the special user information field can indicate the RU type of the corresponding 80MHz frequency band in the four 80MHz frequency bands.

[0097] In some implementations, the dRU distributed bandwidth can be indicated by three or four bits in the SS allocation subfield of the user information field.

[0098] In some embodiments: (a) two bits B26 and B27 of the SS allocation subfield can indicate the size of the frequency segment used in the dRU transmission when the frame is transmitted; and (b) one bit B31 of the SS allocation subfield can indicate whether one spatial stream or two spatial streams are used in transmitting the dRU. In some embodiments: (i) a value of 00 in the two bits B26 and B27 of the SS allocation subfield can indicate that the dRU is transmitted in a 20 MHz frequency segment used by the dRU transmission; (ii) a value of 01 in the two bits B26 and B27 of the SS allocation subfield can indicate that the dRU is transmitted in a 40 MHz frequency segment used by the dRU transmission; (iii) a value of 10 in the two bits B26 and B27 of the SS allocation subfield can indicate that the dRU is transmitted in an 80 MHz frequency segment used by the dRU transmission; and (iv) a value of 11 in the two bits B26 and B27 of the SS allocation subfield can be reserved or can indicate that the dRU is transmitted in a 160 MHz frequency sub-block. Alternatively: (i) a value of 01 in the two bits B26 and B27 of the SS allocation subfield can indicate that the dRU is transmitted in a 20 MHz frequency segment used by the dRU transmission; (ii) a value of 10 in the two bits B26 and B27 of the SS allocation subfield can indicate that the dRU is transmitted in a 40 MHz frequency segment used by the dRU transmission; (iii) a value of 11 in the two bits B26 and B27 of the SS allocation subfield can indicate that the dRU is transmitted in an 80 MHz frequency segment used by the dRU transmission; and (iv) a value of 00 in the two bits B26 and B27 of the SS allocation subfield can be reserved or can indicate that the dRU is transmitted in a 160 MHz frequency sub-block.

[0099] In some embodiments: (a) two bits B26 and B27 of the SS Allocation subfield can indicate in which of the 20MHz, 40MHz, 80MHz, or 160MHz frequency segments the dRU is transmitted in the transmission frame, and (b) two bits B30 and B31 of the SS Allocation subfield can indicate whether one spatial stream or two spatial streams are used in the transmission of the dRU. In some embodiments: (i) a value of 00 in the two bits B26 and B27 of the SS Allocation subfield can indicate that the dRU is transmitted in the 20MHz frequency segment used by the dRU transmission; (ii) a value of 01 in the two bits B26 and B27 of the SS Allocation subfield can indicate that the dRU is transmitted in the 40MHz frequency segment used by the dRU transmission; (iii) a value of 10 in the two bits B26 and B27 of the SS Allocation subfield can indicate that the dRU is transmitted in the 80MHz frequency segment used by the dRU transmission; and, (iv) a value of 11 in the two bits B26 and B27 of the SS Allocation subfield can be reserved or can indicate that the dRU is transmitted in the 160MHz frequency sub-block. Alternatively: (i) a value of 01 in the two bits B26 and B27 of the SS Allocation subfield can indicate that the dRU is transmitted in the 20MHz frequency segment used by the dRU transmission; (ii) a value of 10 in the two bits B26 and B27 of the SS Allocation subfield can indicate that the dRU is transmitted in the 40MHz frequency segment used by the dRU transmission; (iii) a value of 11 in the two bits B26 and B27 of the SS Allocation subfield can indicate that the dRU is transmitted in the 80MHz frequency segment used by the dRU transmission; and, (iv) a value of 00 in the two bits B26 and B27 of the SS Allocation subfield can be reserved or can indicate that the dRU is transmitted in the 160MHz frequency sub-block.

[0100] Additional Description

[0101] The herein described subject matter sometimes illustrates different components contained within, or connected with, other distinct components. It is to be understood that such depicted architectures are merely examples, and that in fact many other architectures can be implemented which achieve the same functionality. In a conceptual sense, any arrangement of components to achieve the same functionality is effectively "associated" such that the desired functionality is achieved. Hence, any two components herein combined to achieve a particular functionality can be seen as "associated with" each other such that the desired functionality is achieved, irrespective of architectures or intermediate components. Likewise, any two components so associated can also be viewed as being "operably connected", or "operably coupled", to each other to achieve the desired functionality, and any two components capable of being so associated can also be viewed as being "operably couplable", to each other to achieve the desired functionality. Specific examples of operably couplable include but are not limited to physically mateable and / or physically interacting components and / or wirelessly interactable and / or wirelessly interacting components and / or logically interacting and / or logically interactable components.

[0102] Furthermore, with respect to the use of substantially any plural and / or singular terms herein, those having ordinary skill in the art can readily convert from plural to singular and / or from singular to plural as is appropriate to the context and / or application. The various singular / plural permutations can be explicitly set forth herein for sake of clarity.

[0103] Moreover, those skilled in the art will appreciate that, by way of example only, references to a term in the following claims are meant to be construed in an open-ended fashion, such that the term is to be construed to cover not only the term itself, but also equivalents thereof, unless otherwise explicitly provided. For example, the terms "includes," "including," "has," "having," "contains," "containing," "comprises" and / or "comprising," when used herein, can each be construed as referring to the inclusion of one or more elements, steps, and / or acts, etc., of a process, method, system, apparatus, device, and / or composition, etc., to the elements, steps, and / or acts, etc., of a process, method, system, apparatus, device, and / or composition, etc., not excluding other elements, steps, and / or acts, etc., that are also present in the process, method, system, apparatus, device, and / or composition, etc., unless otherwise explicitly provided. In addition, the term "comprising" is used herein to mean that the compositions and methods include the recited elements, but not excluding others. "Consisting essentially of" when used herein in connection with, for example, a composition, method, or process, means including the recited elements plus any non-essential integral elements, but not excluding other elements of alloying. "Consisting of" when used herein in connection with, for example, a composition, method, or process, means including the recited elements and excluding all but those elements. Embodiments of the present application encompass all compositions, methods, and processes that are not expressly described herein but which fall within the scope of the appended claims.

[0104] From the above, it is to be understood that various embodiments of the application have been described herein for the purposes of illustration, and that various changes and modifications can be made without departing from the scope and spirit of the application. Accordingly, the various embodiments disclosed herein are not intended to be limiting, the true scope and spirit of the application being indicated by the following claims.

[0105] The use of ordinal terms such as "first", "second", "third", etc. to modify a claim element does not by itself connote any priority, precedence, or order of one claim element over another, or of the temporal sequence of performance of the method actions, but are used merely as labels to identify elements having the same name (to avoid confusion with other elements having the same name).

[0106] While the application has been described by example and in terms of preferred embodiments, it is to be understood that the application is not limited to the disclosed embodiments. To the contrary, it is intended to cover various modifications and equivalent arrangements (as would be apparent to one skilled in the art). It is to be understood that the scope of the following claims is to be accorded the broadest interpretation available under the law so as to encompass all such modifications and equivalent structures.

Claims

1. A method for transmitting distributed tone resource units, comprising: The device's processor generates frames with indications of resource unit (RU) type and distributed tone resource unit (dRU) bandwidth. as well as, The processor transmits the frame to another device; The RU type is indicated in the public information field or special user information field of the frame, and the dRU distribution bandwidth is indicated by three or four bits in the spatial stream SS allocation subfield of the user information field of the frame. In the case where the dRU distribution bandwidth is indicated by three bits in the SS allocation subfield of the user information field, two bits B26 and B27 of the SS allocation subfield are used to indicate the size of the frequency band used for dRU transmission during the transmission frame, and one bit B31 of the SS allocation subfield is used to indicate whether one spatial stream or two spatial streams are used during dRU transmission. In the case where the dRU distribution bandwidth is indicated by four bits in the SS allocation subfield of the user information field, two bits B26 and B27 of the SS allocation subfield are used to indicate whether the dRU is transmitted in the 20MHz, 40MHz or 80MHz frequency band during the transmission frame, and two bits B30 and B31 of the SS allocation subfield are used to indicate whether one or two space streams are used during the transmission of the dRU.

2. The method as described in claim 1, characterized in that, The RU type is indicated by up to four consecutive bits in the public information field.

3. The method as described in claim 2, characterized in that, These four consecutive bits include bits B56 to B59 in the reserved subfield of the public information field.

4. The method as described in claim 3, characterized in that: In response to a transmission bandwidth of 20MHz, 40MHz or 80MHz, bit B56 indicates the RU type as a Regular Resource Unit (rRU) or a Regular Resource Unit (dRU) for the 20MHz, 40MHz or 80MHz bandwidth, while bits B57 to B59 are reserved. In response to the 160MHz transmission bandwidth, each of bits B56 and B57 indicates the RU type for the corresponding 80MHz frequency band in the two 80MHz frequency bands, while bits B58 and B59 are reserved. as well as, In response to the 320MHz transmission bandwidth, each of bits B56 to B59 indicates the RU type for the corresponding 80MHz frequency band among the four 80MHz frequency bands.

5. The method as described in claim 2, characterized in that, These four consecutive bits include bits B59 to B62 in the reserved subfield of the public information field.

6. The method as described in claim 5, characterized in that: In response to a transmission bandwidth of 20MHz, 40MHz or 80MHz, bit B59 indicates the RU type as a Regular Resource Unit (rRU) or a Regular Resource Unit (dRU) for the 20MHz, 40MHz or 80MHz bandwidth, while bits B60 to B62 are reserved. In response to the 160MHz transmission bandwidth, each of bits B59 and B60 indicates the RU type for the corresponding 80MHz band in the two 80MHz bands, while bits B61 and B62 are reserved. as well as, In response to the 320MHz transmission bandwidth, each of bits B59 to B62 indicates the RU type for the corresponding 80MHz frequency band among the four 80MHz frequency bands.

7. The method as described in claim 2, characterized in that, These four consecutive bits include bits B25 to B28 in the general signaling U-SIG ignore and enable subfield of this special user information field.

8. The method as described in claim 7, characterized in that: In response to a transmission bandwidth of 20MHz, 40MHz or 80MHz, bit B25 indicates the RU type as a Regular Resource Unit (rRU) or a Regular Resource Unit (dRU) for the 20MHz, 40MHz or 80MHz bandwidth, while bits B26 to B28 are reserved. In response to the 160MHz transmission bandwidth, each of bits B25 and B26 indicates the RU type for the corresponding 80MHz frequency band in the two 80MHz frequency bands, while bits B27 and B28 are reserved. as well as, In response to a transmission bandwidth of 320MHz, each of bits B25 to B28 indicates the RU type for the corresponding 80MHz frequency band among the four 80MHz frequency bands.

9. The method as described in claim 1, characterized in that, The RU type is indicated by up to four non-contiguous bits in the common information field of the frame, or by up to four non-contiguous bits in a combination of the common information field and the special user information field.

10. The method as described in claim 9, characterized in that: In response to a transmission bandwidth of 20MHz, 40MHz, or 80MHz, bit B22 in the reserved subfield of this common information field indicates that the RU type is a Regular Resource Unit (rRU) or a Regular Resource Unit (dRU) for a bandwidth of 20MHz, 40MHz, or 80MHz, while bits B26, B53, and B63 are reserved. In response to the 160MHz transmission bandwidth, each of bits B22 and B26 indicates the RU type for the corresponding 80MHz frequency band in the two 80MHz frequency bands, while bits B53 and B63 are reserved. as well as, In response to a transmission bandwidth of 320MHz, each of bits B22, B26, B53, and B63 indicates the RU type for the corresponding 80MHz frequency band among the four 80MHz frequency bands.

11. The method as described in claim 9, characterized in that: In response to a transmission bandwidth of 20MHz, 40MHz, or 80MHz, bit B53 or B63 in the reserved subfield of this common information field indicates that the RU type is a Regular Resource Unit (rRU) or a Regular Resource Unit (dRU) for the 20MHz, 40MHz, or 80MHz bandwidth, while bits B20, B21, B22, and B26 are reserved. In response to a transmission bandwidth of 160MHz, each of bits B20 and B21 in the gap spacing GI and the long training field type / triggered transmission opportunity TXOP shared mode subfield of the common information field indicates the RU type for the corresponding 80MHz frequency band in the two 80MHz frequency bands, while bits B22 and B26 are reserved, and bit B53 or B63 is used to indicate that the RU type of at least one 80MHz frequency band is dRU; and, In response to the 320MHz transmission bandwidth, each of bits B20, B21, B22 and B26 is used to indicate the RU type of the corresponding 80MHz frequency band among the four 80MHz frequency bands, while bit B53 or B63 is used to indicate that the RU type of at least one 80MHz frequency band is dRU.

12. The method as described in claim 9, characterized in that: In response to a transmission bandwidth of 20MHz, 40MHz, or 80MHz, bit B63 in the reserved subfield of the common information field indicates that the RU type is a regular resource unit rRU or dRU for the 20MHz, 40MHz, or 80MHz bandwidth, while bits B37 to B39 in another reserved subfield of the special user information field are reserved. In response to the 160MHz transmission bandwidth, bits B63 and B21 are used to indicate the RU type of the corresponding 80MHz frequency band in the two 80MHz frequency bands, while bits B38 and B39 are reserved; and, In response to the 320MHz transmission bandwidth, each of bits B63 and B37 to B39 is used to indicate the RU type of the corresponding 80MHz frequency band among the four 80MHz frequency bands.

13. The method as described in claim 1, characterized in that, In the case where the dRU distributed bandwidth is indicated by three bits in the SS allocation subfield of the user information field: The value of 00 in the two bits B26 and B27 of the SS allocation subfield indicates that the dRU is being transmitted in the 20MHz frequency band used for dRU transmission; The value 01 in the two bits B26 and B27 of the SS allocation subfield indicates that the dRU is transmitted in the 40MHz frequency band used by the dRU transmission; The value 10 in bits B26 and B27 of the SS allocation subfield indicates that the dRU is being transmitted in the 80MHz frequency band used for dRU transmission; and... The value 11 in the two bits B26 and B27 of the SS allocation subfield is reserved or indicates that the dRU is transmitted in the 160MHz frequency subblock.

14. The method as described in claim 1, characterized in that: The value 01 in the two bits B26 and B27 of the SS allocation subfield indicates that the dRU is transmitted in the 20MHz frequency band used by the dRU transmission; The value 10 in the two bits B26 and B27 of the SS allocation subfield indicates that the dRU is being transmitted in the 40MHz frequency band used for dRU transmission; The value 11 in bits B26 and B27 of the SS allocation subfield indicates that the dRU is being transmitted in the 80MHz frequency band used for dRU transmission; and... The value 00 in the two bits B26 and B27 of the SS allocation subfield is reserved or indicates that the dRU is transmitted in the 160MHz frequency subblock.

15. The method as described in claim 1, characterized in that, In the case where the dRU distributed bandwidth is indicated by four bits in the SS allocation subfield of the user information field: The value of 00 in the two bits B26 and B27 of the SS allocation subfield indicates that the dRU is being transmitted in the 20MHz frequency band used for dRU transmission; The value 01 in the two bits B26 and B27 of the SS allocation subfield indicates that the dRU is transmitted in the 40MHz frequency band used by the dRU transmission; The value 10 in bits B26 and B27 of the SS allocation subfield indicates that the dRU is being transmitted in the 80MHz frequency band used for dRU transmission; and... The value 11 in the two bits B26 and B27 of the SS allocation subfield is reserved or indicates that the dRU is transmitted in the 160MHz frequency subblock.

16. The method as described in claim 1, characterized in that, In the case where the dRU distributed bandwidth is indicated by four bits in the SS allocation subfield of the user information field: The value 01 in the two bits B26 and B27 of the SS allocation subfield indicates that the dRU is transmitted in the 20MHz frequency band used by the dRU transmission; The value 10 in the two bits B26 and B27 of the SS allocation subfield indicates that the dRU is being transmitted in the 40MHz frequency band used for dRU transmission; The value 11 in bits B26 and B27 of the SS allocation subfield indicates that the dRU is being transmitted in the 80MHz frequency band used for dRU transmission; and... The value 00 in the two bits B26 and B27 of the SS allocation subfield is reserved or indicates that the dRU is transmitted in the 160MHz frequency subblock.

17. A method for transmitting distributed tone resource units, comprising: The device's processor generates frames with indications of resource unit (RU) type and distributed tone resource unit (dRU) bandwidth. as well as, The processor transmits the frame to another device; The RU type is indicated by four consecutive bits in the public information field or special user information field of the frame, and the dRU distributed bandwidth is indicated in the spatial stream SS allocation subfield of the user information field of the frame. The four consecutive bits include bits B56 to B59 in the reserved subfield of the public information field, or bits B59 to B62 in the reserved subfield of the public information field, or bits B25 to B28 in the general signaling U-SIG ignore and enable subfield of the special user information field. In the case where the four consecutive bits include bits B56 to B59 of the reserved subfield of the public information field: In response to a transmission bandwidth of 20MHz, 40MHz or 80MHz, bit B56 indicates the RU type as a Regular Resource Unit (rRU) or a Regular Resource Unit (dRU) for the 20MHz, 40MHz or 80MHz bandwidth, while bits B57 to B59 are reserved. In response to the 160MHz transmission bandwidth, each of bits B56 and B57 indicates the RU type for the corresponding 80MHz frequency band in the two 80MHz frequency bands, while bits B58 and B59 are reserved; and, In response to a transmission bandwidth of 320MHz, each of bits B56 to B59 indicates the RU type for the corresponding 80MHz frequency band among the four 80MHz frequency bands; In the case where the four consecutive bits include bits B59 to B62 in the reserved subfield of the public information field: In response to a transmission bandwidth of 20MHz, 40MHz or 80MHz, bit B59 indicates the RU type as a Regular Resource Unit (rRU) or a Regular Resource Unit (dRU) for the 20MHz, 40MHz or 80MHz bandwidth, while bits B60 to B62 are reserved. In response to the 160MHz transmission bandwidth, each of bits B59 and B60 indicates the RU type for the corresponding 80MHz band in the two 80MHz bands, while bits B61 and B62 are reserved; and, In response to a transmission bandwidth of 320MHz, each of bits B59 to B62 indicates the RU type for the corresponding 80MHz frequency band among the four 80MHz frequency bands; Specifically, in the case where bits B25 to B28 of the general signaling U-SIG ignore and enable subfield, which includes the special user information field: In response to a transmission bandwidth of 20MHz, 40MHz or 80MHz, bit B25 indicates the RU type as a Regular Resource Unit (rRU) or a Regular Resource Unit (dRU) for the 20MHz, 40MHz or 80MHz bandwidth, while bits B26 to B28 are reserved. In response to the 160MHz transmission bandwidth, each of bits B25 and B26 indicates the RU type for the corresponding 80MHz frequency band in the two 80MHz frequency bands, while bits B27 and B28 are reserved; and, In response to a transmission bandwidth of 320MHz, each of bits B25 to B28 indicates the RU type for the corresponding 80MHz frequency band among the four 80MHz frequency bands.

18. An apparatus for transmitting distributed tone resource units, characterized in that, The device includes a transceiver configured to perform wireless communication and a processor coupled to the transceiver, wherein the processor is configured to perform the method for transmitting distributed tone resource units as claimed in any one of claims 1 to 16.

19. An apparatus for transmitting distributed tone resource units, characterized in that, The device includes a transceiver configured to perform wireless communication and a processor coupled to the transceiver, wherein the processor is configured to perform the method for transmitting distributed tone resource units as described in claim 17.

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