Method and apparatus for indicating multi-resource unit transmission

Abstract

The embodiment of the application discloses a kind of indication method and related equipment of multi-resource unit transmission, which comprises: first device generates EHT TB PPDU, the EHT TB PPDU includes resource unit indication field, and the resource unit indication field is used to indicate the first resource unit used by the first device to transmit the EHT TB PPDU, and the first resource unit is included in the resource unit allocated to the first device;The first device sends the EHT TB PPDU to the second device.The embodiment of the application can indicate the RU actually used by the first device to transmit EHT TB PPDU.The technical scheme provided by the application can be applied to 802.11ax, 802.11be and other Wi-Fi systems.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an indication method and related equipment for multi-resource unit transmission. Background Technology

[0002] In traditional Wireless Local Area Networks (WLANs), each station occupies the entire channel for data transmission through contention when it needs to send uplink data, resulting in low spectrum utilization. The Institute of Electrical and Electronics Engineers (IEEE) 802.11ax standard proposes a trigger-frame-based scheduled uplink transmission method. In this method, before transmitting a High Efficient Trigger-Based Physical Layer Protocol Data Unit (HETB PPDU), a station performs carrier sensing on one or more 20MHz sub-channels within its assigned resource unit (RU). If a 20MHz sub-channel within the frequency band of its assigned RU is detected to be busy, transmission is not initiated to prevent interference with other transmissions.

[0003] With the development of wireless communication technology, the IEEE 802.11be protocol standard allows a single user to be assigned multiple RUs. To further improve spectrum utilization, when a user is assigned multiple RUs, the station can select an idle RU from its assigned RUs for transmission before transmitting Extremely High Throughput Trigger Based Physical layer Protocol Data Units (EHT TB PPDUs). How to instruct the station on the actual RU used for transmitting EHT TB PPDUs is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] This application provides a method and related equipment for indicating the transmission of multiple resource units (RPUs), which can indicate the RU used by a site to actually transmit an EHT TB PPDU.

[0005] In a first aspect, embodiments of this application provide a method for indicating the transmission of multiple resource units (RUs). The method includes: a first device generating an EHT TB PPDU, the EHT TB PPDU including a resource unit indication field, the resource unit indication field indicating a first resource unit used by the first device to transmit the EHT TB PPDU, the first resource unit being contained within a second resource unit, the second resource unit being one or more resource units allocated to the first device; and the first device sending the EHT TB PPDU to a second device. In this way, the RU actually used by the first device to transmit the EHT TB PPDU can be indicated through the EHT TB PPDU.

[0006] In conjunction with the first aspect, in one possible implementation, the EHT TB PPDU includes a general signaling field U-SIG, and the resource element indication field is located in the U-SIG of the EHT TB PPDU. This approach supports uplink multi-user multiple-input multiple-output (MIMO) transmission. Since EHT-LTF itself supports channel estimation for multiple spatial streams, it also supports sending EHT-SIGs according to multiple spatial streams, preventing mutual interference. Therefore, EHT-SIGs sent by multiple MU-MIMO users will not be mixed together.

[0007] In conjunction with the first aspect, in one possible implementation, the EHT TB PPDU includes a U-SIG, an efficient short training sequence field EHT-STF, and an efficient signaling field EHT-SIG. The resource unit indicator field is located within the EHT-SIG, which is situated between the U-SIG and the EHT-STF. In this way, the position of each field in the EHT TB PPDU is the same as in other types of EHT PPDUs, which can employ similar reception procedures, simplifying the processing flow and reducing complexity.

[0008] In conjunction with the first aspect, in one possible implementation, the EHT TB PPDU includes an efficient long training sequence field EHT-LTF, an efficient signaling field EHT-SIG, and a data field, wherein the resource unit indicator field is located within the EHT-SIG, and the EHT-SIG is located between the EHT-LTF and the data field. This approach saves on the overhead of the EHT-SIG field.

[0009] In conjunction with the first aspect, in one possible implementation, before the first device generates a High-Throughput Triggered Physical Layer Protocol Data Unit (EHT TB PPDU), the method further includes: the first device receiving a trigger frame sent by the second device, the trigger frame including a common information field and a user information field identical to the association identifier of the first device, the user information field being used to indicate the second resource unit, the common information field or the user information field including an indication field being used to indicate that the first device is permitted to perform EHT TB PPDU transmission in a portion of the resource units of the second resource unit.

[0010] In conjunction with the first aspect, in one possible implementation, the first device pre-stores an index table, which is used to indicate the correspondence between the value of the resource unit indication field and the first resource unit.

[0011] In conjunction with the first aspect, in one possible implementation, the first resource unit indicated by the resource unit indication field is any one of the following resource units: any 26-subcarrier tone resource unit in the 80MHz frequency band; any 52-tone resource unit in the 80MHz frequency band; any 106-tone resource unit in the 80MHz frequency band; any 242-tone resource unit in the 80MHz frequency band; any 484-tone resource unit in the 80MHz frequency band; or a 996-tone resource unit corresponding to the 80MHz frequency band.

[0012] In conjunction with the first aspect, in one possible implementation, the first resource unit indicated by the resource unit indication field is a combination of multiple resource units corresponding to any of the following combinations: a 106-tone resource unit at the lowest frequency in a 20MHz band within an 80MHz frequency range, combined with a center 26-tone resource unit in the same 20MHz band; a 106-tone resource unit at the highest frequency in a 20MHz band within an 80MHz frequency range, combined with a center 26-tone resource unit in the same 20MHz band; a 52-tone resource unit at the second lowest frequency in a 20MHz band within an 80MHz frequency range, combined with... A combination of two adjacent 26-tone resource units on the same side in a 20MHz band; a combination of a 52-tone resource unit at the second lowest frequency in a 20MHz band and a central 26-tone resource unit in the same 20MHz band; a combination of a 52-tone resource unit at the second highest frequency in a 20MHz band and consecutive 26-tone resource units on the same side in the same 20MHz band; a combination of a 52-tone resource unit at the second highest frequency in a 20MHz band and a central 26-tone resource unit in the same 20MHz band; 80MHz The following are considered combinations of the following: a 484-tone resource element in a frequency band, and a 242-tone resource element adjacent to the 484-tone resource element; a 484-tone resource element in an 80MHz frequency band, and a 242-tone resource element not adjacent to the 484-tone resource element; a combination of two 242-tone resource elements on either side of the 80MHz frequency band; a 996-tone resource element corresponding to the 80MHz frequency band, and a 242-tone resource element adjacent to the 996-tone resource element in the 80MHz frequency band. The following are combinations of non-adjacent 484-tone resource units; 996-tone resource units corresponding to an 80MHz frequency band; and combinations of 484-tone and 242-tone resource units in an 80MHz frequency band adjacent to the 996-tone resource units that are not adjacent to the 996-tone resource units; a 484-tone resource unit and a 242-tone resource unit in an 80MHz frequency band; and a combination of a 484-tone resource unit and a 242-tone resource unit in an 80MHz frequency band adjacent to the 80MHz frequency band.

[0013] In conjunction with the first aspect, in one possible implementation, the EHT TB PPDU further includes a frequency band range indication field, which is used to indicate the frequency position of the 80MHz frequency band range in the bandwidth, wherein the 80MHz frequency band range is any one of the following: the lower frequency 80MHz among the primary 80MHz, the secondary 80MHz, and the secondary 160MHz, and the higher frequency 80MHz among the secondary 160MHz.

[0014] In conjunction with the first aspect, in one possible implementation, the first resource unit indicated by the resource unit indication field is a combination of multiple resource units corresponding to any of the following combinations: a combination of two 996-tone resource units in a 320MHz frequency band; a combination of four 996-tone resource units in a 320MHz frequency band; a combination of the two lowest-frequency 996-tone resource units and the highest-frequency 996-tone resource unit in a 320MHz frequency band; a combination of the lowest-frequency 996-tone resource unit and the two highest-frequency 996-tone resource units in a 320MHz frequency band; a combination of the three lowest-frequency 996-tone resource units in a 320MHz frequency band; and a combination of the three highest-frequency 996-tone resource units in a 320MHz frequency band.

[0015] In conjunction with the first aspect, in one possible implementation, the resource unit indication field includes bits of a first preset length; the position of one bit in the bit corresponds to the position of a unit channel in the total channel.

[0016] In conjunction with the first aspect, in one possible implementation, the resource unit indication field includes bits of a second preset length; the position of one bit in the bit corresponds to the position of a unit channel in the frequency band range corresponding to the second resource unit.

[0017] In conjunction with the first aspect, in one possible implementation, when the bit is a first value, the unit channel corresponding to the bit is included in the channel corresponding to the first resource unit; when the bit is a second value, the unit channel corresponding to the bit is not included in the channel corresponding to the first resource unit.

[0018] In conjunction with the first aspect, in one possible implementation, the resource unit indication field includes bits of a third preset length; the position of one bit in the bit corresponds to the position of a resource unit in the second resource unit.

[0019] In conjunction with the first aspect, in one possible implementation, when the bit is a first value, the resource unit corresponding to the bit is included in the first resource unit; when the bit is a second value, the resource unit corresponding to the bit is not included in the first resource unit.

[0020] Secondly, this application provides a communication device comprising a generation unit and a transmission unit, wherein: the generation unit is configured to generate an EHT TB PPDU, the EHT TB PPDU including a resource unit indication field, the resource unit indication field indicating a first resource unit used by the communication device to transmit the EHT TB PPDU, the first resource unit being contained within a second resource unit, the second resource unit being one or more resource units allocated to the communication device; the transmission unit is configured to transmit the EHT TB PPDU to a second device. This communication device can inform a second device, through the EHT TB PPDU, that the communication device actually uses the RU (Resource Unit) to transmit the EHT TB PPDU.

[0021] In conjunction with the second aspect, in one possible implementation, the EHT TB PPDU includes a U-SIG, wherein the resource unit indication field is located in the U-SIG of the EHT TB PPDU.

[0022] In conjunction with the second aspect, in one possible implementation, the EHT TB PPDU includes U-SIG, EHT-STF, and EHT-SIG, with the resource unit indication field located in the EHT-SIG, which is situated between the U-SIG and the EHT-STF.

[0023] In conjunction with the second aspect, in one possible implementation, the EHT TB PPDU includes an EHT-LTF, an EHT-SIG, and a data field, wherein the resource unit indicator field is located in the EHT-SIG, and the EHT-SIG is located between the EHT-LTF and the data field.

[0024] In conjunction with the second aspect, in one possible implementation, the communication device further includes a receiving unit for receiving a trigger frame sent by the second device. The trigger frame includes a public information field and a user information field that is the same as the association identifier of the communication device. The user information field is used to indicate the second resource unit. The public information field or the user information field includes an indication field, which indicates that the communication device is permitted to perform EHT TB PPDU transmission in a portion of the resource units of the second resource unit.

[0025] In conjunction with the second aspect, in one possible implementation, the communication device further includes a storage unit for storing an index table that indicates the correspondence between the value of the resource unit indication field and the first resource unit.

[0026] In conjunction with the second aspect, in one possible implementation, the first resource unit indicated by the resource unit indication field is any one of the following resource units: any 26-subcarrier tone resource unit in the 80MHz frequency band; any 52-tone resource unit in the 80MHz frequency band; any 106-tone resource unit in the 80MHz frequency band; any 242-tone resource unit in the 80MHz frequency band; any 484-tone resource unit in the 80MHz frequency band; or a 996-tone resource unit corresponding to the 80MHz frequency band.

[0027] In conjunction with the second aspect, in one possible implementation, the first resource unit indicated by the resource unit indication field is a combination of multiple resource units corresponding to any of the following combinations: a combination of a 106-tone resource unit with the lowest frequency in a 20MHz band within an 80MHz frequency range, and a center 26-tone resource unit in the same 20MHz band; a combination of a 106-tone resource unit with the highest frequency in a 20MHz band within an 80MHz frequency range, and a center 26-tone resource unit in the same 20MHz band; a 52-tone resource unit with the second lowest frequency in a 20MHz band within an 80MHz frequency range. Resource units, in combination with adjacent 26-tone resource units on the same side of a 20MHz band; a 52-tone resource unit at the second lowest frequency in a 20MHz band, in combination with the center 26-tone resource unit in a 20MHz band; a 52-tone resource unit at the second highest frequency in a 20MHz band, in combination with consecutive 26-tone resource units on the same side of a 20MHz band; a 52-tone resource unit at the second highest frequency in a 20MHz band, in combination with the center 26-tone resource unit in a 20MHz band. A combination of resource units of one; a 484-tone resource unit in an 80MHz frequency band, and a combination of 242-tone resource units adjacent to the 484-tone resource unit; a 484-tone resource unit in an 80MHz frequency band, and a combination of 242-tone resource units not adjacent to the 484-tone resource unit; a combination of two 242-tone resource units on both sides in an 80MHz frequency band; a 996-tone resource unit corresponding to an 80MHz frequency band, and a combination of resource units of the 996-tone resource unit. The combination of 484-tone resource units that are not adjacent to the 996-tone resource unit in an 80MHz band; the 996-tone resource unit corresponding to the 80MHz band; and the combination of 484-tone resource units and 242-tone resource units that are not adjacent to the 996-tone resource unit in an 80MHz band; the 996-tone resource unit corresponding to the 80MHz band; and the combination of two 242-tone resource units in an 80MHz band adjacent to the 996-tone resource unit.A 484-tone resource element and a 242-tone resource element within an 80MHz frequency band, and a combination of a 484-tone resource element and a 242-tone resource element within an adjacent 80MHz frequency band.

[0028] In conjunction with the second aspect, in one possible implementation, the EHT TB PPDU further includes a frequency band range indication field, which is used to indicate the frequency position of the 80MHz frequency band range in the bandwidth, wherein the 80MHz frequency band range is any one of the following: the lower frequency 80MHz among the primary 80MHz, secondary 80MHz, and secondary 160MHz, and the higher frequency 80MHz among the secondary 160MHz.

[0029] In conjunction with the second aspect, in one possible implementation, the first resource unit indicated by the resource unit indication field is a combination of multiple resource units corresponding to any of the following combinations: a combination of two 996-tone resource units in a 320MHz frequency band; a combination of four 996-tone resource units in a 320MHz frequency band; a combination of the two lowest-frequency 996-tone resource units and the highest-frequency 996-tone resource unit in a 320MHz frequency band; a combination of the lowest-frequency 996-tone resource unit and the two highest-frequency 996-tone resource units in a 320MHz frequency band; a combination of the three lowest-frequency 996-tone resource units in a 320MHz frequency band; and a combination of the three highest-frequency 996-tone resource units in a 320MHz frequency band.

[0030] In conjunction with the second aspect, in one possible implementation, the resource unit indication field includes bits of a first preset length; the position of one bit in the bit corresponds to the position of a unit channel in the total channel.

[0031] In conjunction with the second aspect, in one possible implementation, the resource unit indication field includes bits of a second preset length; the position of one bit in the bit corresponds to the position of a unit channel in the frequency band range corresponding to the second resource unit.

[0032] In conjunction with the second aspect, in one possible implementation, when the bit is a first value, the unit channel corresponding to the bit is included in the channel corresponding to the first resource unit; when the bit is a second value, the unit channel corresponding to the bit is not included in the channel corresponding to the first resource unit.

[0033] In conjunction with the second aspect, in one possible implementation, the resource unit indication field includes a third preset length of bits; the position of one bit in the bit corresponds to the position of a resource unit in the second resource unit.

[0034] In conjunction with the second aspect, in one possible implementation, when the bit is a first value, the resource unit corresponding to the bit is included in the first resource unit; when the bit is a second value, the resource unit corresponding to the bit is not included in the first resource unit.

[0035] Thirdly, this application provides yet another communication device, which includes a processor, a memory, and a transceiver; the transceiver is used to transmit EHT TB PPDU; the memory is used to store program code; and the processor is used to call the program code from the memory to execute the method as described in the first aspect or any possible implementation thereof.

[0036] Fourthly, this application provides a computer-readable storage medium for storing instructions that, when executed, cause the method described in the first aspect or any possible implementation thereof to be implemented.

[0037] Fifthly, this application provides a chip system comprising: at least one processor and an interface for supporting a first device in implementing the functions involved in the first aspect, such as receiving or processing at least one of the data and information involved in the above methods. In one possible design, the chip system further includes a memory for storing program instructions and data necessary for the site. This chip system may be composed of chips or may include chips and other discrete devices.

[0038] In this embodiment, a first device can generate and send an EHT TB PPDU to a second device. The EHT TB PPDU includes a resource unit indication field, which indicates the first resource unit used by the first device to transmit the EHT TB PPDU. This first resource unit is included in the resource units allocated to the first device. In this way, the EHT TB PPDU can indicate the RU actually used by the first device to transmit the EHT TB PPDU. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0040] Figure 1 This is a schematic diagram of the architecture of a data communication system provided in an embodiment of this application;

[0041] Figure 2A This is a schematic diagram of a subcarrier distribution and RU distribution provided in an embodiment of this application;

[0042] Figure 2B This is a schematic diagram of another subcarrier distribution and RU distribution provided in the embodiments of this application;

[0043] Figure 2C This is a schematic diagram of another subcarrier distribution and RU distribution provided in the embodiments of this application;

[0044] Figure 3 This is a schematic diagram of a data transmission process provided in an embodiment of this application;

[0045] Figure 4 This is a schematic diagram of a trigger frame format provided in an embodiment of this application;

[0046] Figure 5 This is a schematic diagram of the frame format of the public information field and the user information list field in a trigger frame provided in an embodiment of this application;

[0047] Figure 6 This is a schematic diagram of a scheduled uplink transmission based on a trigger frame, provided in an embodiment of this application.

[0048] Figure 7 This is a flowchart of a method for indicating the transmission of multiple resource units provided in an embodiment of this application;

[0049] Figure 8A This is a schematic diagram of the frame format of the public information field of a trigger frame provided in an embodiment of this application;

[0050] Figure 8B This is a schematic diagram of the frame format of a user information list field in a trigger frame provided in an embodiment of this application;

[0051] Figure 9 This is a schematic diagram of a frame format of an EHT TB PPDU provided in an embodiment of this application;

[0052] Figure 10 This is a schematic diagram of another EHT TB PPDU frame format provided in the embodiments of this application;

[0053] Figure 11 This is a schematic diagram of another EHT TB PPDU frame format provided in the embodiments of this application;

[0054] Figures 12-13This is a schematic diagram showing the combination of some 106-tone RUs and 26-tone RUs provided in the embodiments of this application;

[0055] Figures 14-17 This is a schematic diagram showing the combination of some 52-tone RUs and 26-tone RUs provided in the embodiments of this application;

[0056] Figures 18-21 This is a combined schematic diagram of some 484-tone RUs and 242-tone RUs provided in the embodiments of this application;

[0057] Figure 22 This is a schematic diagram of merging two 242-tone RUs provided in an embodiment of this application;

[0058] Figures 23-24 This is a schematic diagram illustrating the combination of some 996-tone RUs and 484-tone RUs provided in the embodiments of this application;

[0059] Figures 25-26 This is a combined schematic diagram of some 996-tone RUs, 484-tone RUs, and 242-tone RUs provided in the embodiments of this application;

[0060] Figures 27-28 This is a combined schematic diagram of some 996-tone RUs, 242-tone RUs, and 242-tone RUs provided in the embodiments of this application;

[0061] Figure 29 This is a schematic diagram of a combined 484-tone RU, 242-tone RU, 484-tone RU, and 242-tone RU provided in an embodiment of this application;

[0062] Figures 30-33 This is a schematic diagram of the merging of three 996-tone RUs provided in the embodiments of this application;

[0063] Figure 34 This is a schematic diagram of merging four 996-tone RUs provided in an embodiment of this application;

[0064] Figures 35-37 These are some schematic diagrams illustrating the merging of two 996-tone RUs provided in the embodiments of this application;

[0065] Figure 38 This is a schematic diagram of channel distribution provided in an embodiment of this application;

[0066] Figure 39 This is a schematic diagram of a partial frame format of an EHT TB PPDU provided in an embodiment of this application;

[0067] Figure 40 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0068] Figure 41 This is a schematic diagram of another communication device provided in an embodiment of this application;

[0069] Figure 42 This is a schematic diagram of the structure of a chip provided in an embodiment of this application. Detailed Implementation

[0070] The technical solutions in the embodiments of this application will be described in more detail below.

[0071] The technical solution of this application can be applied to Wireless Local Area Network (WLAN) networks, Internet of Things (IoT) networks, Vehicle-to-X (V2X) networks, and other networks, etc., and is not specifically limited thereto. For example, the application scenarios of this application can be WLAN networks based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11be standard, IoT networks based on the IEEE 802.11be standard, V2X networks based on the IEEE 802.11be standard, other networks based on the IEEE 802.11be standard, next-generation WLAN networks based on 802.11be, IoT networks based on the next-generation standard of IEEE 802.11be, V2X networks based on the next-generation standard of IEEE 802.11be, other networks based on the next-generation standard of IEEE 802.11be, and other WLAN networks based on future standard protocols.

[0072] The data communication system provided in this application includes one or more access points (APs) and one or more stations (STAs). For example, see... Figure 1 This is a schematic diagram illustrating the architecture of a data communication system provided in an embodiment of this application. The data communication system includes one AP and two STAs, wherein the two STAs are a first STA (STA1) and a second STA (STA2). It should be noted that this data communication system includes at least two devices, and may contain more than […]. Figure 1 More or fewer devices, no limit is set here, only... Figure 1As an example, the multi-resource unit transmission indication method provided in this application can be applied to data communication between AP and STA, such as data communication between STA1 and AP, and data communication between STA2 and AP. This method is also applicable to data communication between APs, such as data communication between an AP and another AP. This method is also applicable to data communication between STAs, such as data communication between STA1 and STA2. The following provides a further description of the two devices, STA and AP.

[0073] In this application, the STA (Station) refers to a device with wireless communication capabilities, which can include user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment. The station can also be a cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication capabilities, computing device, or other processing device connected to a wireless modem, in-vehicle device, wearable device, terminal device in future 5G networks, or terminal device in future evolved public land mobile networks (PLMNs), etc. This application does not limit this. For example, access points and stations can be devices used in vehicle networks, IoT nodes and sensors in the Internet of Things (IoT), smart cameras, smart remote controls, smart water and electricity meters in smart homes, and sensors in smart cities, etc.

[0074] The site supports the 802.11be standard. It also supports various WLAN standards from the 802.11 family, including 802.11be, 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

[0075] The access point in this application can be a high efficient (HE) STA or an extrameally high throughput (EHT) STA, or a STA that is compatible with a future generation of WiFi standards.

[0076] The AP involved in this application embodiment can be an access point for terminal devices (such as mobile phones) to access wired (or wireless) networks. It is mainly deployed in homes, buildings, and campuses, with a typical coverage radius of tens to hundreds of meters. Of course, it can also be deployed outdoors. The access point acts as a bridge connecting wired and wireless networks, its main function being to connect various wireless network clients together and then connect the wireless network to the Ethernet. Specifically, the access point can be a terminal device (such as a mobile phone) or a network device (such as a router) equipped with a wireless fidelity (WiFi) chip. The access point can be a device supporting the 802.11be standard. The access point can also be a device supporting various wireless local area network (WLAN) standards of the 802.11 family, such as 802.11be, 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a. The access point in this application can be a high-efficiency (HE) AP or an extrameally high-throughput (EHT) AP, or it can be an access point that is compatible with a future generation of WiFi standards.

[0077] To facilitate understanding of the relevant content of the embodiments of this application, some concepts involved in the embodiments of this application will be explained below.

[0078] 1. Resource Unit (RU)

[0079] This application relates to a basic frequency resource unit for allocating frequency resources in a wireless network. RU types mainly include 26-tone RU, 52-tone RU, 106-tone RU, 242-tone RU, 484-tone RU, 996-tone RU, 2*996-tone RU, etc. Here, "tone" represents a subcarrier. As a basic frequency resource unit, the RU can be allocated to different users for uplink and downlink data transmission. RUs of different sizes have different bandwidths and can also carry services at different rates.

[0080] The following section describes the subcarrier tone plan under different data packet bandwidths. See [link / reference] Figure 2AThis is a schematic diagram of subcarrier and RU distribution provided in an embodiment of this application. When the bandwidth is 20MHz, the entire bandwidth can be composed of a single 242-tone RU, representing an RU composed of 242 subcarriers; the 20MHz bandwidth can also be composed of various combinations of 26-tone RUs, 52-tone RUs, and 106-tone RUs. For example, a 996-tone RU can represent an RU composed of 996 subcarriers. In addition to the RUs used for data transmission, the bandwidth also includes some guard subcarriers and empty subcarriers (…). Figure 2A (as shown in 1tone), or a direct current (DC) subcarrier.

[0081] See Figure 2B This is a schematic diagram of another subcarrier distribution and RU distribution provided in the embodiments of this application. When the bandwidth is 40MHz, the entire bandwidth is roughly equivalent to a replication of a 20MHz subcarrier distribution. The entire bandwidth can be composed of a single 484-tone RU, or various combinations of 26-tone RUs, 52-tone RUs, 106-tone RUs, and 242-tone RUs. The empty subcarriers include... Figure 2B The example shows the parts represented by tone 1 and tone 2.

[0082] See Figure 2C This is a schematic diagram of another subcarrier and RU distribution provided in this application embodiment. When the bandwidth is 80MHz, the entire bandwidth consists of four resource units of 242-tone RUs. Specifically, in the middle of the entire bandwidth, there is an intermediate 26-tone RU composed of two 13-tone subunits. The entire bandwidth can be composed of the entire 996-tone RU, or various combinations of 26-tone RUs, 52-tone RUs, 106-tone RUs, 242-tone RUs, and 484-tone RUs. The empty subcarriers include... Figure 2C The examples shown are 1tone and 2tone. Specifically, as... Figure 2C As shown, the first line indicates that an 80MHz bandwidth may include 37 26-tone RUs, the second line indicates that an 80MHz bandwidth may include 16 52-tone RUs, the third line indicates that an 80MHz bandwidth may include 8 106-tone RUs, the fourth line indicates that an 80MHz bandwidth may include 4 242-tone RUs, the fifth line indicates that an 80MHz bandwidth may include 2 484-tone RUs, and the sixth line indicates that an 80MHz bandwidth may include 1 996-tone RU.

[0083] Following the above pattern, when the bandwidth is 160MHz or 80+80MHz, the entire bandwidth can be considered as a replication of two 80MHz subcarrier distributions. The entire bandwidth can consist of a single 2*996-tone RU, or various combinations of 26-tone RUs, 52-tone RUs, 106-tone RUs, 242-tone RUs, 484-tone RUs, and 996-tone RUs. The difference between 160MHz and 80+80MHz is that the former is a continuous frequency band, while the latter's two 80MHz bands can be separated. Similarly, when the bandwidth is 240MHz or 160+80MHz, the entire bandwidth can be considered as a replication of three 80MHz subcarrier distributions; when the bandwidth is 320MHz or 160+160MHz, the entire bandwidth can be considered as a replication of four 80MHz subcarrier distributions. Further details will not be elaborated here.

[0084] 2. Trigger Frame

[0085] IEEE 802.11ax introduced a trigger-frame-based scheduled uplink transmission method. Figure 1 For example, the AP can trigger STA1 to use the resource units allocated to STA1 to communicate with the AP, and trigger STA2 to use the resource units allocated to STA2 to communicate with the AP, by sending trigger frames to STA1 and STA2. See also Figure 3 , Figure 3 This is a schematic diagram of a data transmission process provided in an embodiment of this application. First, the AP sends a trigger frame to the STA, which contains resource scheduling and other parameters for one or more stations to send uplink physical layer protocol data units (PPDUs). After receiving the trigger frame, the STA parses out the user information field that matches its own Association Identification (AID). The STA determines its assigned RU based on the resource unit allocation subfield in the user information field, and sends a High Efficient Trigger Based Physical Layer Protocol Data Unit (HETBPPDU) on that RU. Next, after receiving uplink multi-user PPDUs composed of uplink sub-PPDUs sent by one or more stations (STA1 and STA2 in the example), the AP replies with a Multiple User Block Acknowledge (M-BA) frame.

[0086] See Figure 4 , Figure 4 This is a schematic diagram of a trigger frame format provided in an embodiment of this application. The trigger frame may include only... Figure 4 The fields shown, or the fields included in the trigger frame, may be more than [number missing]. Figure 4 The fields shown are not limited in this embodiment. For example, the trigger frame includes a common info field and a user info list field. The trigger frame may also include a frame control field, a duration field, a receive address (RA) field, a send address (TA) field, a padding field, and a frame check sequence (FCS) field. The common info field contains common information that one or more STAs receiving the trigger frame need to read. The user info list field consists of one or more user info fields; an STA needs to read the user info field containing its AID. The resource unit allocation (RUAllocation) subfield in this user info field indicates the specific RU allocated to this STA (the STA corresponding to the AID).

[0087] See Figure 5 , Figure 5This is a schematic diagram illustrating the frame format of the public information field and the user information list field in a trigger frame according to an embodiment of this application. It should be noted that this example uses the frame structure of a trigger frame in the IEEE 802.11ax standard. The public information field can also be referred to as a public field or public information domain. The public information fields include the following subfields: trigger type, uplink length, more trigger frames (TF), MU-MIMO HE-LTF mode, number of HE-LTF symbols and midamble periodicity, uplink space-time block coding (UL STBC), low-density parity-check (LDPC) extra symbol segment, AP transmit power (AP TX Power), pre-FEC padding factor, PE disambiguation, uplink spatial reuse (UL Spatial Reuse), Doppler, and cascade indicator. The common information that all stations need to read includes the following subfields: indication, carrier sensing required (CS Required), uplink bandwidth, guard interval + long training sequence (GI+LTF), and trigger dependent common info.

[0088] The user information list field can also be called the user information list domain, site-specific domain, etc. The user information list field includes one or more user information fields. Each user information field contains information that a site needs to read, such as the Association Identifier (AID) subfield, Resource Unit Allocation (RUallocation) subfield, Uplink Forward Error Correction Coding Type (UL FEC Coding Type) subfield, Uplink High-Efficiency Modulation and Coding Strategy (UL HE-MCS) subfield, Uplink Dual Carrier Modulation (UL DCM) subfield, Spatial Stream Allocation / Random Access RU Information (SS Allocation / RA-RU Information) subfield, Uplink Target Received Signal Strength Indicator (ULTarget RSSI) subfield, reserved subfield, and trigger-dependent user information subfield, etc.

[0089] The association identifier field indicates the association identifier of the site corresponding to the user information field; the resource unit allocation subfield indicates the resource unit (or resource unit location) allocated to the site indicated by the user information field. In this embodiment, the user information field can indicate the resource unit through the resource unit allocation subfield.

[0090] In this article, "field" can also be called "domain" or "information", and "subfield" can be called "subdomain" or "information".

[0091] Scheduled uplink transmission based on trigger frames means that stations can send data packets, namely physical layer protocol data units (PPDUs), on allocated resource units. These data packets can be high-efficiency trigger-based physical layer protocol data units (HETB PPDUs). The functions of each field in this PPDU are shown in Table 1.

[0092] Table 1

[0093]

[0094] Currently, in HE TB PPDU transmission methods that require carrier sensing, the trigger frame includes a carrier sensing indication. In this method, before transmitting the HE TB PPDU, the STA performs carrier sensing on one or more 20MHz sub-channels within the area of ​​its assigned RU. Specifically, it checks whether the sensed energy exceeds a predetermined threshold; if so, the 20MHz sub-channel is considered busy; otherwise, it is considered idle. 802.11ax specifies that if any 20MHz sub-channel within the range of the assigned RU is busy, HE TB PPDU transmission is prohibited to prevent interference with other transmissions.

[0095] See Figure 6 , Figure 6 This is a schematic diagram illustrating a scheduled uplink transmission process based on trigger frames, provided in an embodiment of this application. For example... Figure 6 As shown, after receiving the trigger frame, a station can determine its allocated resource units. For example, STA1 is allocated a 484-tone RU, corresponding to a frequency range of 40MHz, containing two 20MHz sub-channels; STA4 is allocated a 242-tone RU, corresponding to a frequency range of 20MHz, containing one 20MHz sub-channel. STA1 performs carrier sensing before transmission; if it detects that sub-channel 1 is busy and sub-channel 2 is idle, it cannot transmit. STA4 performs carrier sensing before transmission; if it detects that a sub-channel is idle, it can transmit.

[0096] With the development of wireless communication technology, the IEEE 802.11be protocol standard allows a single user to be assigned multiple Resource Units (RUs). To further improve spectrum utilization, when a user is assigned multiple RUs, the station can select an idle RU among its assigned RUs for transmission before transmitting Extremely High Throughput Trigger Based Physical layer Protocol Data Units (EHT TB PPDUs). This application provides a method and related apparatus for indicating multi-resource unit transmission, which can indicate the RU actually used by the station to transmit EHT TB PPDUs.

[0097] The following section, in conjunction with the data communication system, STA, and AP described above, further introduces a multi-resource unit transmission indication method provided in this application embodiment.

[0098] See Figure 7 , Figure 7This is a flowchart illustrating a method for indicating multi-resource unit transmission provided in an embodiment of this application. This method can be based on... Figure 1 The data communication system shown is used to implement this, and the first device described below can be... Figure 1 In the data communication system shown, STA1 or STA2, the second device described below can be... Figure 1 The data communication system shown is an AP. In another embodiment, the first device described below may be an AP. Figure 1 In the data communication system shown, the AP, the second device described below, can be capable of communicating with... Figure 1 The AP shown is another AP that performs data communication. In another embodiment, the first device described below could be... Figure 1 In the data communication system shown, STA1, the second device described below can be... Figure 1 STA2 in the data communication system shown. In another embodiment, the first device described below may be... Figure 1 In the data communication system shown, the AP, the second device described below can be... Figure 1 The data communication system shown includes STA1 or STA2. In another possible implementation, the first or second device can also be a multi-link device (MLD). The method includes, but is not limited to, the following steps.

[0099] S101, The first device generates a trigger-based physical layer protocol data unit (EHT TB PPDU) with extremely high throughput.

[0100] The EHT TB PPDU includes a resource unit indication field, which indicates the first resource unit used by the first device to transmit the EHT TB PPDU. The first resource unit is contained within a second resource unit, which is one or more resource units allocated to the first device. It should be noted that this embodiment uses EHT as an example only; in practical applications, it can use other names, such as the name used by a standard after IEEE 802.11ax.

[0101] In some embodiments, the second resource unit may be indicated by a trigger frame received by the first device. Optionally, before the first device generates an EHT TB PPDU, the method further includes: the first device receiving a trigger frame sent by the second device, the trigger frame including a common information field and a user information field identical to the association identifier (AID) of the first device, the user information field being used to indicate the second resource unit, the common information field including an indication field being used to indicate that the first device is permitted to perform EHT TB PPDU transmission in a portion of the resource units of the second resource unit.

[0102] See Figure 8A , Figure 8A This is a schematic diagram of the frame format of a common information field in a trigger frame according to an embodiment of this application. The location of the indicator field in the trigger frame can be referenced. Figure 8A As shown. It should be noted that this indicator field can also be located in other positions within the trigger frame. Figure 8A This is merely an example. In one possible implementation, a value of 1 for the indication field indicates that the first device is allowed to perform EHT TB PPDU transmission in a portion of the resource units of the second resource unit; a value of 0 indicates that the first device is not allowed to perform EHT TB PPDU transmission in a portion of the resource units of the second resource unit. In another possible implementation, the value of the indication field can also be other values, such as 11 (indicating allowed), 00 (indicating disallowed), etc. In yet another possible implementation, the indication field can also be a preset sequence. When the trigger frame contains the indication field, it indicates that the first device is allowed to perform EHT TB PPDU transmission in a portion of the resource units of the second resource unit; when the trigger frame does not contain the indication field, it indicates that the first device is not allowed to perform EHT TB PPDU transmission in a portion of the resource units of the second resource unit. Other design variations for this indication field are also possible, which will not be elaborated upon here.

[0103] Additionally, the user information field of this trigger frame can be referenced. Figure 5 The description in the corresponding embodiment is as follows. The first device can determine the second resource unit allocated to itself based on the user information field containing its own AID. It should be noted that the content of the trigger frame sent to the EHT STA may differ from that in the 802.11ax standard. It may be a redesigned EHT trigger frame or a reused HE trigger frame with escaped fields used as an EHT trigger frame.

[0104] In other embodiments, the indicator field may also be located within the user information field. See also Figure 8B , Figure 8B This is a schematic diagram of the frame format of a user information list field in a trigger frame according to an embodiment of this application. The location of the indicator field in the trigger frame can be referenced. Figure 8B As shown. In one possible implementation, a value of 1 for the indication field indicates that the first device is allowed to perform EHT TB PPDU transmission in a portion of the resource units of the second resource unit; a value of 0 indicates that the first device is not allowed to perform EHT TB PPDU transmission in a portion of the resource units of the second resource unit. In another possible implementation, the value of the indication field can also be other values, such as 11 (indicating allowed), 00 (indicating disallowed), etc. In yet another possible implementation, the indication field can also be a preset sequence. When the user information field contains the indication field, it indicates that the first device is allowed to perform EHT TB PPDU transmission in a portion of the resource units of the second resource unit; when the user information field does not contain the indication field, it indicates that the first device is not allowed to perform EHT TB PPDU transmission in a portion of the resource units of the second resource unit. In this way, when the first device is a site and the second device is an access point, the access point can use a trigger frame to instruct some sites to select some resource units in their allocated resource units for EHT TB PPDU transmission, while other sites are not allowed to select some resource units in their allocated resource units for EHT TB PPDU transmission.

[0105] S102, the first device sends the EHT TB PPDU to the second device.

[0106] Accordingly, the second device receives the EHT TB PPDU. The second device can determine the RU actually used by the first device to transmit the EHT TB PPDU by reading the Resource Unit Indicator field in the EHT TB PPDU.

[0107] Next, we will provide a further introduction to the EHT TB PPDU. It should be noted that, for ease of description, the following content will use the first device as the site and the second device as the access point as an example.

[0108] See Figure 9This diagram illustrates a frame format of an EHT TB PPDU provided in an embodiment of this application. The EHT TB PPDU includes a Legacy Short Training Field (L-STF), a Legacy Long Training Field (L-LTF), a Legacy Signal Field A (L-SIG), a Universal Signaling Field (U-SIG), an Extremely High Throughput Short Training Field (EHT-STF), an Extremely High Throughput Long Training Field (EHT-LTF), an Extremely High Throughput Signal Field (EHT-SIG), a Data field, and a Packet Extension (PE) field. A description of each field of this EHT TB PPDU can be found in Table 2.

[0109] Table 2

[0110]

[0111]

[0112] In one possible implementation, the EHT TB PPDU includes an Efficient Signaling (EHT-SIG) field, with the Resource Unit Indication field located within the EHT-SIG, which is situated between the EHT-LTF and the data field (the location of the Resource Unit Indication field can be referenced). Figure 9 (As shown in the image). The EHT-SIG field may include a Resource Unit Indicator (RU allocation / bitmap) field, a Coding and Modulation Strategy (MCS) field, a Cyclic Redundancy Code (CRC) field, and a Tail field, etc. It should be noted that... Figure 9 For example only, the EHT-SIG field may include only... Figure 9 The fields shown, or the fields included in the EHT-SIG fields, may be more than [number missing]. Figure 9 The fields shown are not limited in this application embodiment. Figure 9The resource unit indicator field shown is used to indicate the first resource unit used by STA1 to transmit EHT TB PPDU, and the MCS field can be used to indicate the coding and modulation strategy used by the first resource unit.

[0113] The advantage of this frame structure is that if EHT-SIG is transmitted after EHT-STF, it can support uplink multiple user multiple input multiple output (UL MU-MIMO) transmission. Since EHT-LTF itself supports channel estimation for multiple spatial streams, it also supports EHT-SIG being transmitted according to multiple spatial streams, without causing mutual interference. Therefore, EHT-SIGs transmitted by multiple MU-MIMO users will not be mixed together.

[0114] In another possible implementation, the EHT TB PPDU includes an EHT-SIG, the resource element indication field is located within the EHT-SIG, and the EHT-SIG is situated between the U-SIG and the EHT-STF. See also Figure 10 This diagram illustrates another frame format of EHT TB PPDU provided in this application embodiment. The descriptions of each field in this EHT TB PPDU can be found in the above descriptions and will not be repeated here. The advantage of this frame structure is that the position of each field in the EHT TB PPDU is the same as in other types of EHT PPDUs, such as the Extremely High Throughput Single User Physical layer Protocol Data Unit (EHT SU PPDU) and the Extremely High Throughput Multiple User Physical layer Protocol Data Unit (EHT MU PPDU). In this way, these PPDUs can employ similar receiving procedures, simplifying the processing flow and reducing complexity.

[0115] In another possible implementation, the EHT TB PPDU includes a Universal Signaling Field (U-SIG), and the Resource Unit Indication (RU allocation / bitmap) field is located in the U-SIG of the EHT TB PPDU. See also Figure 11This is a schematic diagram of another EHT TB PPDU frame format provided in an embodiment of this application. The U-SIG field may include a resource unit indication (RU allocation / bitmap) field, a cyclic redundancy code (CRC) field, and a tail field, etc. Figure 11 For example only, the U-SIG field may include only Figure 9 The fields shown, or the fields included in the U-SIG fields, may be more than [number missing]. Figure 11 The fields shown are not limited in this embodiment. Using this frame structure can save the overhead of the EHT-SIG field.

[0116] The descriptions of each field in the U-SIG field can be found in Table 3.

[0117] Table 3

[0118]

[0119]

[0120] The following section further describes how the resource unit indicator field indicates the first resource unit. It should be noted that the various frame formats of EHT TB PPDU described above can all employ the various indicator methods described below.

[0121] In the first indication method, the site pre-stores an index table, which indicates the correspondence between the value of the resource unit indication field and the first resource unit. For example, this index table can be found in Table 4.

[0122] Table 4

[0123]

[0124]

[0125]

[0126] In this way, the frequency position of the first resource unit can be represented by the value of the resource unit indication field. It should be noted that the correspondence between the values ​​in Table 4 and the indicated resource units can be adjusted, and this embodiment does not impose limitations. For example, the resource unit indication value can indicate resource units arranged from largest to smallest, and so on. In this embodiment, the resource unit indication field can indicate multiple resource units, and the access point can be informed of the correspondence between various possible merged resource units and their respective indices through protocol predefinition or signaling configuration. Furthermore, the first resource unit indicated by Table 4 is part or all of the second resource unit allocated to the site as indicated by the trigger frame. Alternatively, the second resource unit can also be informed to the site through other means.

[0127] Optionally, the AP may pre-store the aforementioned index table. The STA can indicate one of the indexes through the resource unit indication field, so that the AP can determine one or more resource units used by the STA to transmit the EHT TB PPDU based on the index indicated by the resource unit indication field.

[0128] In a first possible implementation, the first resource unit indicated by the resource unit indication field is any one of the following: any 26-subcarrier tone resource unit in the 80MHz frequency band (corresponding to a field value of 0-36); any 52-tone resource unit in the 80MHz frequency band (corresponding to a field value of 37-52); any 106-tone resource unit in the 80MHz frequency band (corresponding to a field value of 53-60); any 242-tone resource unit in the 80MHz frequency band (corresponding to a field value of 61-64); any 484-tone resource unit in the 80MHz frequency band (corresponding to a field value of 65-66); or a 996-tone resource unit in the 80MHz frequency band (corresponding to a field value of 67).

[0129] The distribution method of the first resource unit mentioned above can be referred to Figure 2CAs shown. For example, 0-36 can be used to indicate the 37 26-tone RUs located in different positions that may be included in the 80MHz represented by the first row; 37-52 can be used to indicate the 16 52-tone RUs located in different positions that may be included in the 80MHz represented by the second row; 53-60 can be used to indicate the 8 106-tone RUs located in different positions that may be included in the 80MHz represented by the third row; 61-64 can be used to indicate the 4 242-tone RUs located in different positions that may be included in the 80MHz represented by the fourth row; 65-66 can be used to indicate the 2 484-tone RUs located in different positions that may be included in the 80MHz represented by the fifth row; and 67 is used to indicate the 1 996-tone RU that may be included in the 80MHz represented by the sixth row.

[0130] In a second possible implementation, the first resource unit indicated by the resource unit indication field is a combination of multiple resource units corresponding to any of the following combinations: a 106-tone resource unit with the lowest frequency in a 20MHz band within an 80MHz frequency range, and a central 26-tone resource unit in the same 20MHz band (corresponding to a field value of 72-75); a 106-tone resource unit with the highest frequency in a 20MHz band within an 80MHz frequency range, and a central 26-tone resource unit in the same 20MHz band (corresponding to a field value of 76-79). The combination of a 52-tone resource cell at the second lowest frequency in a 20MHz band and an adjacent 26-tone resource cell on the same side of the same 20MHz band (corresponding to field values ​​of 80-83); the combination of a 52-tone resource cell at the second lowest frequency in a 20MHz band and a central 26-tone resource cell in the same 20MHz band (corresponding to field values ​​of 84-87); the combination of a 52-tone resource cell at the second highest frequency in a 20MHz band and an adjacent 26-tone resource cell on the same side of the same 20MHz band. Combinations of 6-tone resource units (corresponding to field values ​​of 88-91); a combination of a 52-tone resource unit at the second highest frequency in a 20MHz band within an 80MHz band, and a central 26-tone resource unit in the same 20MHz band (corresponding to field values ​​of 92-95); a 484-tone resource unit in an 80MHz band, and a combination of a 242-tone resource unit adjacent to the 484-tone resource unit (corresponding to field values ​​of 96-97); a 484-tone resource unit in an 80MHz band... Resource units, and combinations of 242-tone resource units that are not adjacent to the 484-tone resource unit (corresponding to field values ​​of 98-99); combinations of two 242-tone resource units on either side of the 80MHz frequency band (corresponding to field values ​​of 100); 996-tone resource units corresponding to the 80MHz frequency band, and combinations of 484-tone resource units in the 80MHz frequency band that are not adjacent to the 996-tone resource unit (corresponding to field values ​​of 101-102).The following are considered as separate categories: 996-tone resource units within an 80MHz frequency band, and combinations of 484-tone and 242-tone resource units within an 80MHz band adjacent to the 996-tone resource unit (corresponding to field values ​​of 103-104); 996-tone resource units within an 80MHz frequency band, and combinations of two 242-tone resource units within an 80MHz band adjacent to the 996-tone resource unit (corresponding to field values ​​of 105-106); one 484-tone resource unit and one 242-tone resource unit within an 80MHz frequency band, and combinations of one 484-tone resource unit and one 242-tone resource unit within an 80MHz frequency band adjacent to the 996-tone resource unit (corresponding to field values ​​of 111-126).

[0131] The distribution method of the first resource unit mentioned above can be referred to Figures 12-29 As shown below, each scenario will be described in more detail. It should be noted that the example given is "the merging scheme of a 52-tone RU at the second lowest frequency within a 20MHz band and its adjacent 26-tone RU on the same side within that 20MHz band". Here, "adjacent on the same side" depends on the position of the 20MHz RU within the 80MHz band. If the 20MHz RU is to the left of the center position within the 80MHz band, then "adjacent on the same side" is "left-side adjacent"; if the 20MHz RU is to the right of the center position within the 80MHz band, then "adjacent on the same side" is "right-side adjacent".

[0132] Furthermore, in this article, the terms "second lowest frequency RU," "lowest frequency RU," "second highest frequency RU," and "highest frequency RU" are all relative to a frequency range. For example, ... Figure 2C As shown, within the first 20MHz, the second lowest frequency 52-tone RU refers to... Figure 2C The second 52-tone RU in the second row, the lowest frequency 52-tone RU refers to... Figure 2C The first 52-tone RU in the second row, the second highest frequency 52-tone RU refers to... Figure 2C The third 52-tone RU in the second row, the highest frequency 52-tone RU refers to... Figure 2CThe fourth 52-tone RU in the second row. Correspondingly, the same applies to other RUs: the second lowest frequency RU, the lowest frequency RU, the second highest frequency RU, and the highest frequency RU, which will not be detailed here. Furthermore, in this article, "low-frequency RU" and "high-frequency RU" are relative to a frequency range. Generally, there are two RUs within this frequency range; a low-frequency RU refers to the RU at the relatively lower frequency, and a high-frequency RU refers to the RU at the relatively higher frequency. For example, Figure 2C As shown, within the first 20MHz, the low-frequency 106-tone RU refers to... Figure 2C The first 106-tone RU in the third line refers to the low-frequency 106-tone RU. Figure 2C The second 106-tone RU in the third row.

[0133] In addition, in this article, "low-frequency adjacent" or "high-frequency adjacent" for a certain frequency band range means that the two frequency band ranges are closest to each other, for example... Figure 23 In this context, the first 80MHz frequency band range relative to the second 80MHz frequency band range can be referred to as: the first 80MHz frequency band range is the low-frequency adjacent frequency band range of the second 80MHz frequency band range; the second 80MHz frequency band range relative to the first 80MHz frequency band range can be referred to as: the second 80MHz frequency band range is the high-frequency adjacent frequency band range of the first 80MHz frequency band range.

[0134] by Figures 12-13 For example, this paper describes a scheme for combining 106-tone RU and 26-tone RU in a 20MHz band within 80MHz, where the site actually uses 106-tone RU and 26-tone RU for EHT TB PPDU transmission.

[0135] See Figure 12 , Figure 12 This is a schematic diagram of a 106-tone RU and a 26-tone RU combined according to an embodiment of this application. Figure 12 The RU distribution shown is the RU distribution within a 20MHz range of 80MHz. The merging scheme of the low-frequency 106-tone RUs and the central 26-tone RUs within this 20MHz range is as follows: Figure 12 As shown. For example, 72-75 can be used to indicate the scheme corresponding to four 20MHz at different locations in an 80MHz range.

[0136] See Figure 13 , Figure 13This is another schematic diagram of the combination of 106-tone RU and 26-tone RU provided in the embodiments of this application. Figure 13 The RU distribution shown is the RU distribution within a 20MHz range of 80MHz. The merging scheme of the high-frequency 106-tone RUs and the central 26-tone RUs within this 20MHz range is as follows: Figure 13 As shown. For example, 76-79 can be used to indicate the scheme corresponding to four 20MHz frequencies at different locations within an 80MHz range.

[0137] by Figures 14 to 17 For example, this paper describes a scheme for combining 52-tone RUs and 26-tone RUs in a 20MHz band within 80MHz, where the site actually uses 52-tone RUs and 26-tone RUs for EHT TB PPDU transmission.

[0138] See Figure 14 , Figure 14 This is a schematic diagram of a merging scheme of 52-tone RU and 26-tone RU provided in an embodiment of this application. Figure 14 The RU distribution shown is the RU distribution within a 20MHz range of 80MHz. The merging scheme of the second lowest frequency 52-tone RU and its adjacent 26-tone RU on the same side of this 20MHz range is as follows: Figure 14 As shown. For example, 80-83 can be used to indicate the scheme corresponding to four 20MHz at different locations within an 80MHz.

[0139] See Figure 15 , Figure 15 This is a schematic diagram of another merging scheme of 52-tone RU and 26-tone RU provided in the embodiments of this application. Figure 15 The RU distribution shown is the RU distribution within a 20MHz range of 80MHz. The merging scheme of the second lowest frequency 52-tone RU and the central 26-tone RU within this 20MHz range is as follows: Figure 15 As shown. For example, 84-87 can be used to indicate the scheme corresponding to four 20MHz at different locations in an 80MHz range.

[0140] See Figure 16 , Figure 16 This is a schematic diagram of another merging scheme of 52-tone RU and 26-tone RU provided in the embodiments of this application. Figure 16The RU distribution shown is the RU distribution within a 20MHz range of 80MHz. The merging scheme of the second highest frequency 52-tone RU and the consecutive 26-tone RUs on the same side of this 20MHz range is as follows: Figure 16 As shown. For example, 88-91 can be used to indicate the scheme corresponding to four 20MHz at different locations in an 80MHz range.

[0141] See Figure 17 , Figure 17 This is a schematic diagram of another merging scheme of 52-tone RU and 26-tone RU provided in the embodiments of this application. Figure 17 The RU distribution shown is the RU distribution within a 20MHz range of 80MHz. The merging scheme of the second highest frequency 52-tone RU and the central 26-tone RU within this 20MHz range is as follows: Figure 17 As shown. For example, 92-95 can be used to indicate the scheme corresponding to four 20MHz at different locations in an 80MHz range.

[0142] by Figures 18 to 21 For example, this paper describes a merging scheme of a 484-tone RU and a 242-tone RU within 80MHz, where the site actually uses the 484-tone RU and the 242-tone RU for EHT TB PPDU transmission.

[0143] See Figure 18 , Figure 18 This is a schematic diagram of a 484-tone RU and a 242-tone RU combined according to an embodiment of this application. Figure 18 The RU distribution shown is the RU distribution within 80MHz, a scheme combining a low-frequency 484-tone RU with its consecutive 242-tone RUs. For example, 96 can be used to indicate that the 484-tone RU corresponds to the scheme of the low-frequency 484-tone RU.

[0144] See Figure 19 , Figure 19 This is another schematic diagram of the combination of 484-tone RU and 242-tone RU provided in the embodiments of this application. Figure 19 The RU distribution shown is an RU distribution within 80MHz, a scheme combining a high-frequency 484-tone RU with its consecutive 242-tone RUs. For example, 97 can be used to indicate that the 484-tone RU corresponds to the scheme of the high-frequency 484-tone RU.

[0145] See Figure 20 , Figure 20This is another schematic diagram of the combination of 484-tone RU and 242-tone RU provided in the embodiments of this application. Figure 20 The RU distribution shown is the RU distribution within 80MHz, a scheme combining low-frequency 484-tone RUs with their discontinuous 242-tone RUs. For example, 98 can be used to indicate that the 484-tone RU corresponds to the scheme of the low-frequency 484-tone RU.

[0146] See Figure 21 , Figure 21 This is another schematic diagram of the combination of 484-tone RU and 242-tone RU provided in the embodiments of this application. Figure 21 The RU distribution shown is the RU distribution within 80MHz, a scheme combining high-frequency 484-tone RUs with their discontinuous 242-tone RUs. For example, 99 can be used to indicate that the 484-tone RU corresponds to the scheme of the high-frequency 484-tone RU.

[0147] by Figure 22 For example, this describes a merging scheme for two 242-tone RUs within 80MHz, where the site actually uses two 242-tone RUs for EHT TB PPDU transmission. See [link / reference] Figure 22 , Figure 22 This is a schematic diagram of merging two 242-tone RUs provided in an embodiment of this application. Figure 22 The RU distribution shown is the RU distribution within an 80MHz range, representing the merging scheme of the outermost 242-tone RUs within this 80MHz range. Here, "outermost" is relative to this 80MHz range and is optional. Figure 22 The two combined 242-tone RUs can also be referred to as "two" 242-tone RUs within this 80MHz. For example, 100 can be used to indicate such a scheme.

[0148] by Figures 23 to 24 For example, this paper describes the merging scheme of 996-tone RU and 484-tone RU within 160MHz, that is, the site actually uses 996-tone RU and 484-tone RU for EHT TB PPDU transmission.

[0149] See Figure 23 , Figure 23 This is a schematic diagram of a 996-tone RU and a 484-tone RU combined according to an embodiment of this application. Figure 23The RU distribution shown is as follows: the RU distribution within an 80MHz band and its adjacent 80MHz band. The merging scheme for a 996-tone RU corresponding to an 80MHz band, and the 484-tone RUs in the adjacent 80MHz band that are not adjacent to the 996-tone RU, is as follows: Figure 23 As shown. For example, 101 can be used to indicate the scheme corresponding to a 484-tone RU located in a high-frequency adjacent 80MHz.

[0150] See Figure 24 , Figure 24 This is another schematic diagram of the combination of a 996-tone RU and a 484-tone RU provided in the embodiments of this application. Figure 24 The RU distribution shown is as follows: the RU distribution within an 80MHz band and its adjacent 80MHz band. The merging scheme for a 996-tone RU corresponding to an 80MHz band, and a 484-tone RU in the adjacent 80MHz band that is not adjacent to the 996-tone RU, is as follows: Figure 24 As shown. For example, 102 can be used to indicate the scheme corresponding to the 484-tone RU located in the adjacent 80MHz of the low frequency range.

[0151] by Figures 25 to 26 For example, this paper describes the merging scheme of 996-tone RU, 484-tone RU and 242-tone RU within 160MHz, that is, the site actually uses 996-tone RU, 484-tone RU and 242-tone RU for EHT TB PPDU transmission.

[0152] See Figure 25 , Figure 25 This is a schematic diagram of a combined 996-tone RU, 484-tone RU, and 242-tone RU provided in an embodiment of this application. Figure 25 The RU distribution shown is as follows: the RU distribution within an 80MHz band and its adjacent 80MHz band. The merging scheme for a 996-tone RU corresponding to an 80MHz band, and the 484-tone RUs and 242-tone RUs in the adjacent 80MHz band that are not adjacent to the 996-tone RU, is as follows: Figure 25 As shown. For example, 103 can be used to indicate the corresponding scheme of 484-tone RU and 242-tone RU located in adjacent high-frequency 80MHz.

[0153] See Figure 26 , Figure 26This is another schematic diagram of the combination of 996-tone RU, 484-tone RU and 242-tone RU provided in the embodiments of this application. Figure 26 The RU distribution shown is as follows: the RU distribution within an 80MHz frequency range adjacent to its lower frequency range. The merging scheme for a 996-tone RU corresponding to an 80MHz frequency range, and the 484-tone RUs and 242-tone RUs in the adjacent 80MHz range that are not adjacent to the 996-tone RU, is as follows: Figure 26 As shown. For example, 104 can be used to indicate the scheme corresponding to the 484-tone RU and the 242-tone RU located in adjacent low-frequency 80MHz.

[0154] by Figures 27 to 28 For example, this paper describes the merging scheme of 996-tone RU, 242-tone RU, and 242-tone RU within 160MHz, that is, the site actually uses 996-tone RU, 242-tone RU, and 242-tone RU for EHT TB PPDU transmission.

[0155] See Figure 27 , Figure 27 This is a schematic diagram of a combined 996-tone RU, 242-tone RU, and 242-tone RU provided in an embodiment of this application. Figure 27 The RU distribution shown is as follows: the RU distribution within an 80MHz band and its adjacent 80MHz band. The merging scheme of a 996-tone RU corresponding to an 80MHz band and the 242-tone RUs on either side of it in the adjacent 80MHz band is as follows. Figure 27 As shown. For example, 105 can be used to indicate the scheme corresponding to two 242-tone RUs located in adjacent high-frequency 80MHz ranges.

[0156] See Figure 28 , Figure 28 This is another schematic diagram of the combination of 996-tone RU, 242-tone RU and 242-tone RU provided in the embodiments of this application. Figure 28 The RU distribution shown is as follows: the RU distribution within an 80MHz band and its adjacent 80MHz band. The merging scheme of a 996-tone RU corresponding to an 80MHz band and the 242-tone RUs on either side of the adjacent 80MHz band is as follows. Figure 28 As shown. For example, 106 can be used to indicate the scheme corresponding to two 242-tone RUs located in adjacent low-frequency 80MHz ranges.

[0157] by Figure 29For example, this section illustrates a merging scheme for 484-tone RUs, 242-tone RUs, and multiple 484-tone RUs within the 160MHz band. Specifically, it explains how a site actually uses 484-tone RUs, 242-tone RUs, and multiple 484-tone RUs for EHT TB PPDU transmission. See [link / reference]. Figure 29 , Figure 29 This is a schematic diagram of a combination of 484-tone RU, 242-tone RU, 484-tone RU and 242-tone RU provided in an embodiment of this application. Figure 29 The RU distribution shown is as follows: the RU distribution within an 80MHz band and its adjacent 80MHz band. One possible merging scheme for the 484-tone RUs and 242-tone RUs in the 80MHz band and the adjacent 80MHz band is as follows: Figure 29 As shown.

[0158] Since there are four options for selecting 484-tone RU and 242-tone RU in an 80MHz circuit, such as... Figures 18-21 Since an 80MHz RU and its adjacent 80MHz RU together form two 80MHz RUs, there are 16 possible merging schemes for 4*4, i.e., 484-tone RU, 242-tone RU, 484-tone RU, and 242-tone RU. These schemes will not be elaborated here. For example, these 16 schemes can be indicated by 111-126.

[0159] In a third possible implementation, the first resource unit indicated by the resource unit indication field is a combination of multiple resource units corresponding to any of the following combinations: a combination of two 996-tone resource units in a 320MHz frequency band (corresponding to a field value of 68-70); a combination of four 996-tone resource units in a 320MHz frequency band (corresponding to a field value of 71); or a combination of the two lowest-frequency 996-tone resource units and the highest-frequency 996-tone resource unit in a 320MHz frequency band. The combination of units (corresponding to the case where the field value is 107); the combination of the lowest frequency 996-tone resource unit and the two highest frequency 996-tone resource units in the 320MHz frequency band (corresponding to the case where the field value is 108); the combination of the three lowest frequency 996-tone resource units in the 320MHz frequency band (corresponding to the case where the field value is 109); the combination of the three highest frequency 996-tone resource units in the 320MHz frequency band (corresponding to the case where the field value is 110).

[0160] The distribution method of the first resource unit mentioned above can be referred to Figures 30-37 As shown below, each situation will be described in more detail.

[0161] by Figures 30 to 33 For example, this paper describes the merging scheme of three 996-tone RUs within 320MHz, that is, the site actually uses three 996-tone RUs for EHT TB PPDU transmission.

[0162] See Figure 30 , Figure 30 This is a schematic diagram of merging three 996-tone RUs provided in an embodiment of this application. Figure 30 The RU distribution shown is the RU distribution within 320MHz. A schematic diagram illustrating the combination of the two lowest-frequency 996-tone RUs and the highest-frequency 996-tone RU within this 320MHz range is shown below. Figure 30 As shown. For example, this scheme can be indicated by 107.

[0163] See Figure 31 , Figure 31 This is another schematic diagram of merging three 996-tone RUs provided in an embodiment of this application. Figure 31 The RU distribution shown is the RU distribution within 320MHz. A schematic diagram illustrating the combination of the lowest frequency 996-tone RU and the highest frequency 996-tone RUs within this 320MHz range is shown below. Figure 31As shown. For example, this scheme can be indicated by 108.

[0164] See Figure 32 , Figure 32 This is another schematic diagram of merging three 996-tone RUs provided in an embodiment of this application. Figure 32 The RU distribution shown is the RU distribution within 320MHz. A combined schematic diagram of the three 996-tone RUs with the lowest frequencies within this 320MHz range is shown below. Figure 32 As shown. For example, this scheme can be indicated by 109.

[0165] See Figure 33 , Figure 33 This is another schematic diagram of merging three 996-tone RUs provided in an embodiment of this application. Figure 33 The RU distribution shown is the RU distribution within 320MHz. A combined schematic diagram of the three highest-frequency 996-tone RUs within this 320MHz range is shown below. Figure 33 As shown. For example, this scheme can be indicated by 110.

[0166] by Figure 34 For example, this section illustrates a merging scheme for four 996-tone RUs within 320MHz, where the site actually uses four 996-tone RUs for EHT TB PPDU transmission. See [link / reference]. Figure 34 , Figure 34 This is a schematic diagram of merging four 996-tone RUs provided for an embodiment of this application. Figure 34 The RU distribution shown is the RU distribution within 320MHz. For example, this scheme can be indicated by 71.

[0167] by Figures 35 to 37 For example, this section illustrates a merging scheme for two 996-tone RUs within the 320MHz band, where the site actually uses two 996-tone RUs for EHT TB PPDU transmission. These two 996-tone RUs must include at least one 996-tone RU corresponding to the first (lowest frequency) 80MHz band. See [link / reference] Figures 35 to 37 The diagram below illustrates the merging of two 996-tone RUs as provided in embodiments of this application. For example, 68-70 can respectively indicate these three schemes.

[0168] As can be seen from the wireless channel allocation method, a 320MHz bandwidth can be divided into multiple 80MHz bands. See also... Figure 38 , Figure 38 This is a schematic diagram of channel distribution provided in an embodiment of this application, such as... Figure 38As shown, when the bandwidth is 320MHz, it can be divided into a primary 80MHz, a secondary 80MHz, a lower frequency 80MHz within the secondary 160MHz, and a higher frequency 80MHz within the secondary 160MHz. One 80MHz channel can include four 20MHz channels. Therefore, if the frequency range used by a site is less than 320MHz, the AP also needs to know the frequency position of the site's used frequency range within the bandwidth.

[0169] In one possible implementation, the AP can determine the frequency position within the bandwidth corresponding to the first resource element used by the STA by means of a trigger frame sent to the STA (or by means of a stored record of RU allocations for multiple STAs). In this implementation, the EHT TB PPDU may include only the resource element indication field described above.

[0170] In another possible implementation, the EHT TB PPDU may further include a frequency band range indication field, which is used to indicate the frequency position of an 80MHz frequency band range (refer to the first and second possible implementations described above) in the bandwidth, wherein the 80MHz frequency band range is any one of the following: the lower frequency 80MHz of the primary 80MHz, the secondary 80MHz, and the secondary 160MHz, and the higher frequency 80MHz of the secondary 160MHz.

[0171] The following provides a further description of the frequency band range indication field.

[0172] It should be noted that the bandwidth of a wireless local area network can include 20MHz, 40MHz, 80MHz, 160MHz, 240MHz, 320MHz, etc. For bandwidths of 20MHz, 40MHz, and 80MHz, the station can use the resource unit indication field to directly indicate one of the resource units in that bandwidth. For bandwidths greater than or equal to 160MHz, such as 160MHz, 240MHz, and 320MHz, the station can use the frequency band range indication field to indicate which 80MHz band range is in that bandwidth.

[0173] Optionally, if the frequency band used by the site is equal to 320MHz (see reference). Figures 30-37 In the case shown, the frequency band indication field can be ignored, meaning the EHT TB PPDU may not include the frequency band indication field. It is understandable that, in this case, to ensure the frame length remains unchanged, the EHT TB PPDU may also include the frequency band indication field; in this case, the frequency band indication field may not represent any information.

[0174] Please refer to Table 5, which illustrates the relationship between the frequency band range indication field, bandwidth, and frequency band range provided in this application embodiment. As shown in Table 5, for bandwidths of 20MHz, 40MHz, and 80MHz, the EHT TB PPDU may not include the frequency band range indication field. For a bandwidth of 160MHz, the frequency band range indication field may occupy 1 bit, i.e., the required number of bits is 1. A frequency band range indication field equal to 0 indicates that the 80MHz frequency band range is the primary 80MHz within the bandwidth; a frequency band range indication field equal to 1 indicates that the 80MHz frequency band range is the secondary 80MHz within the bandwidth.

[0175] For a bandwidth of 320MHz, the frequency band range indication field can occupy 2 bits, meaning 2 bits are required. A frequency band range indication field equal to 0 indicates that the 80MHz frequency band range is the primary 80MHz within the bandwidth. A frequency band range indication field equal to 1 indicates that the 80MHz frequency band range is the secondary 80MHz within the bandwidth. A frequency band range indication field equal to 3 indicates that the 80MHz frequency band range is the lower frequency 80MHz within the secondary 160MHz within the bandwidth. A frequency band range indication field equal to 4 indicates that the 80MHz frequency band range is the higher frequency 80MHz within the secondary 160MHz. Furthermore, the correspondence between the values ​​of the frequency band range indication field in Table 5 and the respective 80MHz frequency band ranges can be adjusted, and this application embodiment does not impose limitations.

[0176] Table 5

[0177]

[0178] The above content introduced the first indication method for the resource unit indication field to indicate the first resource unit. Next, the second indication method will be introduced.

[0179] The second indication method involves a resource unit indication field comprising bits of a first preset length; the position of one bit within the bit set corresponds to the position of a unit channel within the total channel. It should be noted that the correspondence can be that the left-to-right positions within the bits correspond to the low-to-high frequency positions within the total channel.

[0180] Reference Figure 38The diagram illustrating channel partitioning shows that, in one possible implementation, a unit channel could be a 20MHz channel, and the total channel size could be an 80MHz channel. In this case, the first preset length can be 4 bits, and the position of one bit within those 4 bits corresponds to the position of a unit channel (20MHz) within the total channel size (80MHz). For example, if the STA actually uses the channel corresponding to the second 20MHz segment of the 80MHz channel, then the resource unit indicator field can be "0100". That is, the channel corresponding to the first resource unit is the channel corresponding to the second 20MHz segment of the 80MHz channel.

[0181] Specifically, when a bit is a first value (e.g., 1), the channel corresponding to that bit is included in the channel corresponding to the first resource unit; when a bit is a second value (e.g., 0), the channel corresponding to that bit is not included in the channel corresponding to the first resource unit. It should be noted that the first and second values ​​are merely examples, and other values ​​may be used in actual application.

[0182] In another possible implementation, a single channel can be a 20MHz channel, and the total channel can be a 160MHz channel. In this case, the first preset length can be 8 bits, and the position of one bit within the 8 bits corresponds to the position of a single channel (20MHz) within the total channel (160MHz). For example, the STA actually uses the first, second, third, fourth, seventh, and eighth 20MHz channels within the 160MHz (see reference...). Figure 23 As shown in the figure, the resource unit indicator field can be "11110011". That is, the channel corresponding to the first resource unit is the first, second, third, fourth, seventh and eighth 20MHz channels in the 160MHz range.

[0183] Similarly, in other possible implementations, a single channel can be a 20MHz channel, and the total channel can be a 320MHz channel. Alternatively, a single channel can be a 40MHz channel, and the total channel can be an 80MHz channel. Or, a single channel can be a 40MHz channel, and the total channel can be a 160MHz channel. Or, a single channel can be a 40MHz channel, and the total channel can be a 320MHz channel. Or, a single channel can be an 80MHz channel, and the total channel can be a 160MHz channel. Or, a single channel can be an 80MHz channel, and the total channel can be a 320MHz channel, and so on. The bits contained in the resource unit indicator field can be referred to the description above.

[0184] The third indication method involves a resource unit indication field comprising bits of a second preset length. The position of one bit within this field corresponds to the position of a unit channel within the frequency band of the resource unit allocated to the site (i.e., the second resource unit mentioned above). Alternatively, two (or other numbers of) bits may correspond to a unit channel. It should be noted that the positional correspondence can be that the left-to-right positions within the bits correspond to the frequency positions from low to high within the frequency band. Furthermore, the frequency band corresponding to the resource unit allocated to the site can be multiple discrete parts.

[0185] For example, refer to Table 6, which illustrates the correspondence between the size of the resource unit allocated to the site and the value of the second preset length. This can also be understood as the second preset length being equal to the number of 20MHz sub-channels contained in the frequency band corresponding to the resource unit allocated to the site. In this example, one unit channel is 20MHz. This unit channel can also have other values; different values ​​will result in different correspondences, which will not be elaborated upon here.

[0186] Table 6

[0187] 484 2 996 4 2*996 8 3*996 12 4*996 16 242+484 3 242+484+996 7 484+996 6 484+2*996 10 484+3*996 14 Maximum value (4*996) 16

[0188] For example, if the resource units allocated to the site are "242+484", for instance, refer to... Figure 20 As shown, the site is assigned a low-frequency 484-tone RU in the 80MHz band and a 242-tone RU that is not adjacent to this 484-tone RU. Therefore, the second preset length is 3. If the site actually uses the low-frequency 484-tone RU of these two RUs for EHT TB PPDU transmission, the resource element indicator field can be "110". If the site actually uses the channel corresponding to the low frequency 20MHz of the low-frequency 484-tone RU of these two RUs for EHT TB PPDU transmission, the resource element indicator field can be "100".

[0189] Specifically, when a bit is a first value (e.g., 1), the channel corresponding to that bit is included in the channel corresponding to the first resource unit; when a bit is a second value (e.g., 0), the channel corresponding to that bit is not included in the channel corresponding to the first resource unit. It should be noted that the first and second values ​​are merely examples, and other values ​​may be used in actual application.

[0190] The fourth indication method involves a resource unit indication field comprising a third preset length of bits. The position of one bit within this field corresponds to the position of a resource unit within the resource units allocated to the site (i.e., the second resource unit mentioned above). Alternatively, two (or other numbers of) bits may correspond to one resource unit. It should be noted that the positional correspondence may be that the left-to-right positions within the bits correspond to the positions of the multiple resource units with frequencies ranging from low to high. Furthermore, the multiple resource units allocated to the site may be multiple discrete RUs.

[0191] For example, see Table 7, which illustrates the correspondence between the size of the resource unit allocated to the site and the value of the third preset length. This can also be understood as the third preset length being equal to the number of individual RUs contained within the multi-RU.

[0192] Table 7

[0193]

[0194]

[0195] For example, if the resource units allocated to the site are "242+484", for instance, refer to... Figure 20 As shown, the site is assigned a low-frequency 484-tone RU in the 80MHz band and a 242-tone RU that is not adjacent to this 484-tone RU. Therefore, the third preset length is 2. If the site actually uses the 484-tone RU for EHT TBPPDU transmission, the resource element indicator field can be "10". If the site actually uses the 242-tone RU for EHT TBPPDU transmission, the resource element indicator field can be "01".

[0196] Specifically, when a bit is a first value (e.g., 1), the resource unit corresponding to that bit is included in the first resource unit; when a bit is a second value (e.g., 0), the resource unit corresponding to that bit is not included in the first resource unit. It should be noted that the first and second values ​​are merely examples, and other values ​​may be used in actual application.

[0197] It should be noted that, for the third indication method, the length of the bits included in the resource unit indication field can also be a fixed length (e.g., 16 bits). For cases with different RU sizes, the first N bits of the fixed length can be used, and the value of N can be referred to the second preset length value shown in Table 6. Similarly, for the fourth indication method, the length of the bits included in the resource unit indication field can also be a fixed length (e.g., 4 bits). For cases with different RU sizes, the first M bits of the fixed length can be used, and the value of M can be referred to the third preset length value shown in Table 7.

[0198] Based on the above description, the following section introduces some possible solutions derived from the embodiments of this application.

[0199] In some embodiments, for a site that has been allocated multiple RUs, the channel corresponding to the first resource unit selected by the site may be specified as follows.

[0200] Rule 1: A site may select any one or more sub-channels (e.g., 20MHz) of the channel corresponding to the allocated second resource unit as the channel corresponding to the first resource unit. In this way, spectrum utilization can be maximized.

[0201] Rule 2: The remaining channels can be used to form a standard-supported single RU (e.g., 242-tone RU, 484-tone RU, 996-tone RU, 2*996-tone RU, 3*996-tone RU). The remaining channels are those corresponding to the allocated second resource unit, excluding the channels corresponding to the first resource unit. This simplifies the transmission modes that the AP and STA need to support.

[0202] Rule 3: The remaining channels can be used to form a standard-supported single RU (such as a 242-tone RU, 484-tone RU, 996-tone RU, 2*996-tone RU, 3*996-tone RU), or to form a standard-supported multi-RU (see the introduction to multi-RU merging schemes above). This approach allows for a comprehensive consideration of the transmission modes that the AP and STA need to support, as well as spectrum utilization.

[0203] In some embodiments, for a STA allocated a single RU, the channel corresponding to the first resource element selected for that site may also refer to the above provisions. Additionally, provision 4 may be included: a STA allocated a single RU is not permitted to transmit EHT TB PPDUs on some sub-channels within the channel corresponding to the allocated second resource element.

[0204] In some embodiments, where the resource unit indication field described above is located in the EHT-SIG, and a STA with a single RU is not allowed to transmit EHT TB PPDU on a portion of the sub-channels in the channel corresponding to the allocated second resource unit, there are two feasible schemes for designing the EHT TB PPDU.

[0205] In one feasible approach, for STAs that are not assigned an MRU (i.e., have only a single RU), the corresponding EHT TB PPDU portion can also include the EHT-SIG. This ensures the alignment of the fields and guarantees the peak-to-average power ratio (PAPR) of the EHT TB PPDU. Optionally, in this approach, the content included in the EHT-SIG is not restricted and can include a uniform, fixed pseudo-random sequence, such as an EHT-LTF sequence.

[0206] In another feasible approach, for a STA that has not been assigned an MRU (i.e., has been assigned a single RU), the corresponding EHT TB PPDU may not include the EHT-SIG. Optionally, the symbol length including both the EHT-SIG and the data field is the same as the symbol length containing only the data field and not the EHT-SIG. This avoids the problem of adjacent band interference.

[0207] For example, see Figure 39 , Figure 39 This is a schematic diagram of a partial frame format of an EHT TB PPDU provided in an embodiment of this application. In this example, the resource element indication field in the EHT-SIG adopts the second indication method described above. A unit channel is a 20MHz channel, and the total number of channels is 320MHz (only the first 160MHz is shown in the example). STA1 allocates 484+242-tone RUs on the first 80MHz, STA2 allocates 484+242-tone RUs on the second 80MHz, STA3 allocates a 242-tone RU on the first 80MHz, and STA4 allocates a 242-tone RU on the second 80MHz. After carrier sensing, STA1 is idle on the first and third 20MHz channels, so the resource element indication field of STA1 can be "1010 0000 0000 0000". For STA2, if the fifth, sixth, and seventh 20MHz channels are idle, the resource unit indicator field of STA2 can be "0000 1110 0000 0000".

[0208] For STA3 and STA4, since they are both assigned a single RU, the EHT TB PPDU for STA3 and STA4 may not include the EHT-SIG. For example, the length of the data fields in the EHT TB PPDU for STA3 and STA4 is the same as the total length of the data fields in the EHT TB PPDU for STA1 and STA2, which is equal to the total length of the EHT-SIG.

[0209] In some embodiments, in addition to the resource unit indicator field, the EHT-SIG may also include fields indicating other physical layer parameters that the STA can decide independently, such as the modulation and coding scheme (MCS).

[0210] To achieve the functions of the methods provided in the embodiments of this application, the first device and the second device may include hardware structures and software modules, and implement the above functions in the form of hardware structures, software modules, or hardware structures plus software modules. One of the above functions can be executed in the form of hardware structures, software modules, or hardware structures plus software modules.

[0211] The method embodiments of this application have been described above. The corresponding device embodiments will be described below.

[0212] See Figure 40 This is a schematic diagram of a communication device provided in an embodiment of this application. The communication device 400 can be a station, a device within a station, or a device compatible with an access point. The communication device 400 can also be an access point, a device within an access point, or a device compatible with a station. The communication device 400 can also be a multi-link device. The communication device 400 includes a generating unit 4001 and a transmitting unit 4002, specifically:

[0213] The generation unit 4001 is used to generate an EHT TB PPDU. The EHT TB PPDU includes a resource unit indication field, which indicates a first resource unit used by the communication device to transmit the EHT TB PPDU. The first resource unit is contained within a second resource unit, which is one or more resource units allocated to the communication device. Specifically, the operations performed by the generation unit 4001 can be referred to the above description. Figure 7 The method described in step S101 is as follows. The EHT TB PPDU can be referred to the above. Figures 9-11 The corresponding embodiments are described below.

[0214] The transmitting unit 4002 is used to transmit the EHT TB PPDU to the second device. Specifically, the operation performed by the transmitting unit 4002 can be referred to the above. Figure 7 The description of step S102 in the method shown.

[0215] In some embodiments, the EHT TB PPDU includes a general signaling field U-SIG, and the resource element indication field is located in the U-SIG of the EHT TB PPDU. For example, see [reference needed]. Figure 11 The content of the corresponding embodiment.

[0216] In some embodiments, the EHT TB PPDU includes a U-SIG, an efficient short training sequence field EHT-STF, and an efficient signaling field EHT-SIG, wherein the resource unit indicator field is located within the EHT-SIG, and the EHT-SIG is located between the U-SIG and the EHT-STF. For example, see [reference needed]. Figure 10 The content of the corresponding embodiment.

[0217] In some embodiments, the EHT TB PPDU includes an efficient long training sequence field EHT-LTF, an efficient signaling field EHT-SIG, and a data field, wherein the resource unit indication field is located within the EHT-SIG, and the EHT-SIG is located between the EHT-LTF and the data field. For example, see [reference needed]. Figure 9 The content of the corresponding embodiment.

[0218] In some embodiments, the communication device 400 further includes a receiving unit 4003, which is configured to receive a trigger frame sent by the second device. The trigger frame includes a public information field and a user information field that is identical to the association identifier of the communication device. The user information field is used to indicate the second resource unit. The public information field or the user information field may include an indication field, which indicates that the communication device is permitted to perform EHT TB PPDU transmission in a portion of the resource units of the second resource unit.

[0219] In some embodiments, the communication device 400 further includes a storage unit 4004 for storing an index table for indicating the correspondence between the value of the resource unit indication field and the first resource unit.

[0220] In some embodiments, the first resource unit indicated by the resource unit indication field is any one of the following resource units: any 26-subcarrier tone resource unit in the 80MHz frequency band; any 52-tone resource unit in the 80MHz frequency band; any 106-tone resource unit in the 80MHz frequency band; any 242-tone resource unit in the 80MHz frequency band; any 484-tone resource unit in the 80MHz frequency band; or a 996-tone resource unit corresponding to the 80MHz frequency band.

[0221] In some embodiments, the first resource unit indicated by the resource unit indication field is a combination of multiple resource units corresponding to any of the following combinations: a 106-tone resource unit at the lowest frequency in a 20MHz band within an 80MHz frequency range, combined with a center 26-tone resource unit in the same 20MHz band; a 106-tone resource unit at the highest frequency in a 20MHz band within an 80MHz frequency range, combined with a center 26-tone resource unit in the same 20MHz band; a 52-tone resource unit at the second lowest frequency in a 20MHz band within an 80MHz frequency range, combined with a center 26-tone resource unit in the same 20MHz band. The combination of adjacent 26-tone resource units on the same side; a 52-tone resource unit at the second lowest frequency in a 20MHz band within an 80MHz frequency range, combined with the center 26-tone resource unit in that 20MHz band; a 52-tone resource unit at the second highest frequency in a 20MHz band within an 80MHz frequency range, combined with consecutive 26-tone resource units on the same side in that 20MHz band; a 52-tone resource unit at the second highest frequency in a 20MHz band within an 80MHz frequency range, combined with the center 26-tone resource unit in that 20MHz band; 80MHz frequency range The following are considered combinations of the following: a 484-tone resource cell in a frequency band; a 484-tone resource cell in an 80MHz frequency band; a 484-tone resource cell in an 80MHz frequency band; a 242-tone resource cell in an 80MHz frequency band; a 996-tone resource cell in an 80MHz frequency band; and a 242-tone resource cell in an 80MHz frequency band that is not adjacent to the 996-tone resource cell. The combination of adjacent 484-tone resource units; 996-tone resource units corresponding to an 80MHz frequency band; and combinations of 484-tone and 242-tone resource units in an 80MHz frequency band adjacent to the 996-tone resource units but not adjacent to the 996-tone resource units; a 484-tone resource unit and a 242-tone resource unit in an 80MHz frequency band; and a combination of a 484-tone resource unit and a 242-tone resource unit in an 80MHz frequency band adjacent to the 80MHz frequency band.

[0222] In some embodiments, the EHT TB PPDU further includes a frequency band range indication field, which is used to indicate the frequency position of the 80MHz frequency band range in the bandwidth, wherein the 80MHz frequency band range is any one of the following: the lower frequency 80MHz of the primary 80MHz, the secondary 80MHz, and the secondary 160MHz, and the higher frequency 80MHz of the secondary 160MHz.

[0223] In some embodiments, the first resource unit indicated by the resource unit indication field is a plurality of resource units corresponding to any of the following combinations: a combination of two 996-tone resource units in a 320MHz frequency band; a combination of four 996-tone resource units in a 320MHz frequency band; a combination of the two lowest frequency 996-tone resource units and the highest frequency 996-tone resource unit in a 320MHz frequency band; a combination of the lowest frequency 996-tone resource unit and the two highest frequency 996-tone resource units in a 320MHz frequency band; a combination of the three lowest frequency 996-tone resource units in a 320MHz frequency band; or a combination of the three highest frequency 996-tone resource units in a 320MHz frequency band.

[0224] In some embodiments, the resource unit indication field includes bits of a first preset length; the position of one bit in the bit corresponds to the position of a unit channel in the total channel.

[0225] In some embodiments, the resource unit indication field includes bits of a second preset length; the position of one bit in the bit corresponds to the position of a unit channel in the frequency band range corresponding to the second resource unit.

[0226] In some embodiments, when the bit is a first value, the unit channel corresponding to the bit is included in the channel corresponding to the first resource unit; when the bit is a second value, the unit channel corresponding to the bit is not included in the channel corresponding to the first resource unit.

[0227] In some embodiments, the resource unit indication field includes bits of a third preset length; the position of one bit in the bit corresponds to the position of a resource unit in the second resource unit.

[0228] In some embodiments, when the bit is a first value, the resource unit corresponding to the bit is included in the first resource unit; when the bit is a second value, the resource unit corresponding to the bit is not included in the first resource unit.

[0229] It should be noted that, Figure 40 The operations performed by each unit of the communication device shown can be described in the relevant content of the above method embodiments. Further details are omitted here. The aforementioned units can be implemented in hardware, software, or a combination of both. In one embodiment, the functions of the generation unit 4001 and the transmission unit 4002 described above can be implemented by one or more processors in the communication device 400.

[0230] pass Figure 40 The communication device shown can generate and send an EHT TB PPDU to a second device. The EHT TB PPDU includes a resource unit indication field, which indicates a first resource unit used by the communication device to transmit the EHT TB PPDU. This first resource unit is included in the resource units allocated to the communication device. The communication device can use the EHT TB PPDU to inform the second device of the RU actually used by the communication device to transmit the EHT TB PPDU.

[0231] See Figure 41 , Figure 41 This is a schematic diagram of another communication device provided in an embodiment of this application. The communication device 410 can be an access point, a station, or a chip, chip system, or processor that supports the access point in implementing the above methods; it can also be a chip, chip system, or processor that supports the station in implementing the above methods. This device can be used to implement the methods described in the above method embodiments, and specific details can be found in the descriptions of the above method embodiments.

[0232] The communication device 410 may include one or more processors 4101. The processor 4101 may be a general-purpose processor or a special-purpose processor, etc. The processor 4101 may be used to control the communication device (e.g., access point, access point chip, site, site chip, etc.), execute software programs, and process data from the software programs.

[0233] Optionally, the communication device 4100 may include one or more memories 4102, which may store instructions 4104 that can be executed on the processor 4101, causing the communication device 4100 to perform the methods described in the above method embodiments. Optionally, the memory 4102 may also store data. The processor 4101 and the memory 4102 may be provided separately or integrated together.

[0234] Optionally, the communication device 4100 may further include a transceiver 4105 and an antenna 4106. The transceiver 4105 may be referred to as a transceiver unit, transceiver, or transceiver circuit, etc., and is used to implement the transmission and reception functions. The transceiver 4105 may include a receiver and a transmitter. The receiver may be referred to as a receiver or receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or transmitting circuit, etc., and is used to implement the transmitting function.

[0235] Processor 4101 is used to execute Figure 7 The operation of generating an EHT TB PPDU in step S102. The EHT TB PPDU includes a resource unit indication field, which indicates a first resource unit used by the communication device to transmit the EHT TB PPDU. The first resource unit is contained within a second resource unit, which is one or more resource units allocated to the communication device.

[0236] Processor 4101 is also used to perform via transceiver 4105 Figure 7 The operation of sending EHT TB PPDU in step S102.

[0237] The operations performed by processor 4101 can be described in accordance with the relevant content of the above method embodiments. Further details will not be provided here.

[0238] In another possible design, the transceiver can be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit used to implement the receiving and transmitting functions can be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or for transmitting or relaying signals.

[0239] In another possible design, the processor 4101 may optionally store instructions 4103, which, when executed on the processor 4101, cause the communication device 4100 to perform the methods described in the above method embodiments. Instructions 4103 may be embedded in the processor 4101; in this case, the processor 4101 may be implemented in hardware.

[0240] In another possible design, the communication device 4100 may include circuitry that can perform the functions of sending, receiving, or communicating in the foregoing method embodiments.

[0241] The processors and transceivers described in this application can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc.

[0242] The communication device described in the above embodiments may be an access point or a station, but the scope of the communication device described in this application is not limited to this, and the structure of the communication device may vary. Figure 14 The communication device may be a standalone device or part of a larger device. For example, the communication device may be:

[0243] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0244] (2) A collection of one or more ICs, optionally including a storage component for storing data and instructions;

[0245] (3) ASIC, such as modem;

[0246] (4) Modules that can be embedded in other devices;

[0247] (5) Receivers, smart terminals, wireless devices, handheld devices, mobile units, vehicle-mounted devices, cloud devices, artificial intelligence devices, etc.;

[0248] (6) Others, etc.

[0249] For cases where the communication device can be a chip or a chip system, please refer to [link / reference]. Figure 42 The diagram shows the structure of the chip. Figure 42 The chip 4200 shown includes a processor 4201 and an interface 4202. The number of processors 4201 can be one or more, and the number of interfaces 4202 can be multiple.

[0250] Regarding the case where the chip is used to implement the function of the first device in the embodiments of this application:

[0251] The processor 4201 is configured to generate an EHT TB PPDU. The EHT TB PPDU includes a resource unit indication field, which indicates a first resource unit used by the communication device to transmit the EHT TB PPDU. The first resource unit is contained within a second resource unit, which is one or more resource units allocated to the communication device.

[0252] The interface 4202 is used to send the EHT TB PPDU.

[0253] Optionally, the chip also includes a memory 4203, which is used to store the necessary program instructions and data for the terminal device.

[0254] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented through hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this application.

[0255] This application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a computer, implements the functions of any of the above method embodiments.

[0256] This application also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0257] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0258] Those skilled in the art will understand that the various numerical designations such as "first" and "second" used in this application are merely for the convenience of description and are not intended to limit the scope or order of the embodiments of this application.

[0259] The correspondences shown in the tables of this application can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values; this application is not limited to these values. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows of the tables in this application may not be configured. Furthermore, appropriate modifications and adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the headings of the above tables can also use other names that the communication device can understand, and the values ​​or representations of the parameters can also be other values ​​or representations that the communication device can understand. In the implementation of the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables, etc.

[0260] The term "predefined" in this application can be understood as definition, pre-defined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0261] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0262] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0263] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for indicating multi-resource unit transmission, characterized in that, include: The first device generates an Extremely High Throughput Triggered Physical Layer Protocol Data Unit (EHTTB PPDU), the EHTTB PPDU including a resource unit indication field, the resource unit indication field being used to indicate a first resource unit used by the first device to transmit the EHTTB PPDU, the first resource unit being contained in a second resource unit, the second resource unit being one or more resource units allocated to the first device; The first device sends the EHT TB PPDU to the second device.

2. The method according to claim 1, characterized in that, The EHT TB PPDU includes a general signaling field U-SIG, and the resource unit indication field is located in the U-SIG of the EHT TB PPDU.

3. The method according to claim 1, characterized in that, The EHT TB PPDU includes U-SIG, the efficient short training sequence field EHT-STF, and the efficient signaling field EHT-SIG. The resource unit indicator field is located in the EHT-SIG, and the EHT-SIG is located between the U-SIG and the EHT-STF.

4. The method according to claim 1, characterized in that, The EHT TB PPDU includes an efficient long training sequence field EHT-LTF, an efficient signaling field EHT-SIG, and a data field. The resource unit indicator field is located in the EHT-SIG, and the EHT-SIG is located between the EHT-LTF and the data field.

5. The method according to any one of claims 1-4, characterized in that, Before the first device generates a trigger-based Physical Layer Protocol Data Unit (EHT TB PPDU) with extremely high throughput, the method further includes: The first device receives a trigger frame sent by the second device. The trigger frame includes a public information field and a user information field that is the same as the association identifier of the first device. The user information field is used to indicate the second resource unit. The public information field or the user information field includes an indication field, which is used to indicate that the first device is allowed to perform EHT TB PPDU transmission in a portion of the resource units of the second resource unit.

6. The method according to any one of claims 1-5, characterized in that, The first device has a pre-stored index table, which is used to indicate the correspondence between the value of the resource unit indicator field and the first resource unit.

7. The method according to any one of claims 1-6, characterized in that, The first resource unit indicated by the resource unit indication field is any one of the following resource units: Any 26-subcarrier tone resource element within an 80MHz frequency band; Any 52-tone resource unit within an 80MHz frequency band; Any 106-tone resource element within an 80MHz frequency band; Any 242-tone resource unit within an 80MHz frequency band; Any 484-tone resource unit within an 80MHz frequency band; The 80MHz frequency band corresponds to a 996-tone resource unit.

8. The method according to any one of claims 1-6, characterized in that, The resource unit indication field indicates that the first resource unit is any combination of the following resource units: The combination of a 106-tone resource cell with the lowest frequency in a 20MHz band within an 80MHz frequency range and a central 26-tone resource cell in the same 20MHz band. A combination of a 106-tone resource cell with the highest frequency in a 20MHz band within an 80MHz frequency range, and a central 26-tone resource cell in the same 20MHz band. A combination of a 52-tone resource cell at a mid-to-low frequency of 20MHz within an 80MHz frequency band and a 26-tone resource cell adjacent on the same side within the same 20MHz band. A combination of a 52-tone resource cell at a mid-low frequency of 20MHz within an 80MHz frequency band and a central 26-tone resource cell within the same 20MHz band. A combination of a 52-tone resource cell at the second highest frequency in a 20MHz band within an 80MHz frequency range and an adjacent 26-tone resource cell on the same side in the same 20MHz band. A combination of a 52-tone resource cell at the second highest frequency in a 20MHz band within an 80MHz frequency range and a central 26-tone resource cell in a 20MHz band. A 484-tone resource element in an 80MHz frequency band, and a combination of 242-tone resource elements adjacent to the 484-tone resource element; A 484-tone resource cell in an 80MHz frequency band, and a combination of 242-tone resource cells that are not adjacent to the 484-tone resource cell; A combination of two 242-tone resource units on either side of an 80MHz frequency band; The 996-tone resource element corresponding to the 80MHz frequency band, and the combination of 484-tone resource elements in the 80MHz band that are not adjacent to the 996-tone resource element. The 996-tone resource element corresponding to the 80MHz frequency band, and the combination of 484-tone resource elements and 242-tone resource elements in the 80MHz band adjacent to the 996-tone resource element that are not adjacent to the 996-tone resource element; A 484-tone resource element and a 242-tone resource element in an 80MHz frequency band, and a combination of a 484-tone resource element and a 242-tone resource element in an 80MHz frequency band adjacent to the 80MHz frequency band.

9. The method according to claim 7 or 8, characterized in that, The EHT TB PPDU also includes a frequency band range indication field, which is used to indicate the frequency position of the 80MHz frequency band range in the bandwidth. The 80MHz frequency band range is any one of the following: the lower frequency 80MHz among the primary 80MHz, secondary 80MHz, and secondary 160MHz, and the higher frequency 80MHz among the secondary 160MHz.

10. The method according to any one of claims 1-6, characterized in that, The resource unit indication field indicates that the first resource unit is any combination of the following resource units: A combination of two 996-tone resource units within a 320MHz frequency band; A combination of four 996-tone resource units within a 320MHz frequency band; Within a 320MHz frequency band, the combination of the two lowest-frequency 996-tone resource units and the highest-frequency 996-tone resource unit; Within a 320MHz frequency band, the combination of the lowest frequency 996-tone resource cell and the two highest frequency 996-tone resource cells; The combination of the three lowest-frequency 996-tone resource units within the 320MHz frequency band; The combination of the three highest-frequency 996-tone resource units within the 320MHz frequency band.

11. The method according to any one of claims 1-5, characterized in that, The resource unit indication field includes bits of a first preset length; the position of one bit in the bit corresponds to the position of a unit channel in the total channel. When the bit is a first value, the unit channel corresponding to the bit is included in the channel corresponding to the first resource unit; When the bit is the second value, the unit channel corresponding to the bit is not included in the channel corresponding to the first resource unit.

12. The method according to any one of claims 1-5, characterized in that, The resource unit indication field includes bits of a second preset length; the position of one bit in the bit corresponds to the position of a unit channel in the frequency band range corresponding to the second resource unit. When the bit is a first value, the unit channel corresponding to the bit is included in the channel corresponding to the first resource unit; When the bit is the second value, the unit channel corresponding to the bit is not included in the channel corresponding to the first resource unit.

13. The method according to any one of claims 1-5, characterized in that, The resource unit indication field includes bits of a third preset length; the position of one bit in the bit corresponds to the position of a resource unit in the second resource unit. When the bit is a first value, the resource unit corresponding to the bit is included in the first resource unit; When the bit is a second value, the resource unit corresponding to the bit is not included in the first resource unit.

14. A communication device, characterized in that, The communication device includes a generating unit and a transmitting unit, wherein: The generation unit is used to generate an EHT TB PPDU, the EHT TB PPDU including a resource unit indication field, the resource unit indication field being used to indicate a first resource unit used by the communication device to transmit the EHT TB PPDU, the first resource unit being contained in a second resource unit, the second resource unit being one or more resource units allocated to the communication device; The transmitting unit is used to transmit the EHT TB PPDU to the second device.

15. The communication device according to claim 14, characterized in that, The EHT TB PPDU includes a U-SIG, and the resource unit indication field is located in the U-SIG of the EHT TB PPDU.

16. The communication device according to claim 14, characterized in that, The EHT TB PPDU includes U-SIG, EHT-STF and EHT-SIG, the resource unit indication field is located in the EHT-SIG, and the EHT-SIG is located between the U-SIG and the EHT-STF.

17. The communication device according to claim 14, characterized in that, The EHT TB PPDU includes an EHT-LTF, an EHT-SIG, and a data field. The resource unit indicator field is located in the EHT-SIG, and the EHT-SIG is located between the EHT-LTF and the data field.

18. The communication device according to any one of claims 14-17, characterized in that, The communication device further includes a receiving unit for receiving a trigger frame sent by the second device. The trigger frame includes a public information field and a user information field that is the same as the association identifier of the communication device. The user information field is used to indicate the second resource unit. The public information field or the user information field includes an indication field, which is used to indicate that the communication device is allowed to perform EHT TB PPDU transmission in a portion of the resource units of the second resource unit.

19. The communication device according to any one of claims 14-18, characterized in that, The communication device further includes a storage unit for storing an index table, which indicates the correspondence between the value of the resource unit indication field and the first resource unit.

20. The communication device according to any one of claims 14-19, characterized in that, The first resource unit indicated by the resource unit indication field is any one of the following resource units: Any 26-subcarrier tone resource element within an 80MHz frequency band; Any 52-tone resource unit within an 80MHz frequency band; Any 106-tone resource element within an 80MHz frequency band; Any 242-tone resource unit within an 80MHz frequency band; Any 484-tone resource unit within an 80MHz frequency band; The 80MHz frequency band corresponds to a 996-tone resource unit.

21. The communication device according to any one of claims 14-19, characterized in that, The resource unit indication field indicates that the first resource unit is any combination of the following resource units: The combination of a 106-tone resource cell with the lowest frequency in a 20MHz band within an 80MHz frequency range and a central 26-tone resource cell in the same 20MHz band. A combination of a 106-tone resource cell with the highest frequency in a 20MHz band within an 80MHz frequency range, and a central 26-tone resource cell in the same 20MHz band. A combination of a 52-tone resource cell at a mid-to-low frequency of 20MHz within an 80MHz frequency band and a 26-tone resource cell adjacent on the same side within the same 20MHz band. A combination of a 52-tone resource cell at a mid-low frequency of 20MHz within an 80MHz frequency band and a central 26-tone resource cell within the same 20MHz band. A combination of a 52-tone resource cell at the second highest frequency in a 20MHz band within an 80MHz frequency range and an adjacent 26-tone resource cell on the same side in the same 20MHz band. A combination of a 52-tone resource cell at the second highest frequency in a 20MHz band within an 80MHz frequency range and a central 26-tone resource cell in a 20MHz band. A 484-tone resource element in an 80MHz frequency band, and a combination of 242-tone resource elements adjacent to the 484-tone resource element; A 484-tone resource cell in an 80MHz frequency band, and a combination of 242-tone resource cells that are not adjacent to the 484-tone resource cell; A combination of two 242-tone resource units on either side of an 80MHz frequency band; The 996-tone resource element corresponding to the 80MHz frequency band, and the combination of 484-tone resource elements in the 80MHz band that are not adjacent to the 996-tone resource element. The 996-tone resource element corresponding to the 80MHz frequency band, and the combination of 484-tone resource elements and 242-tone resource elements in the 80MHz band adjacent to the 996-tone resource element that are not adjacent to the 996-tone resource element; The 996-tone resource element corresponding to the 80MHz frequency band, and the combination of two 242-tone resource elements in the 80MHz adjacent to the 996-tone resource element; A 484-tone resource element and a 242-tone resource element in an 80MHz frequency band, and a combination of a 484-tone resource element and a 242-tone resource element in an 80MHz frequency band adjacent to the 80MHz frequency band.

22. The communication device according to claim 20 or 21, characterized in that, The EHT TB PPDU also includes a frequency band range indication field, which is used to indicate the frequency position of the 80MHz frequency band range in the bandwidth. The 80MHz frequency band range is any one of the following: the lower frequency 80MHz among the primary 80MHz, secondary 80MHz, and secondary 160MHz, and the higher frequency 80MHz among the secondary 160MHz.

23. The communication device according to any one of claims 14-19, characterized in that, The resource unit indication field indicates that the first resource unit is any combination of the following resource units: A combination of two 996-tone resource units within a 320MHz frequency band; A combination of four 996-tone resource units within a 320MHz frequency band; Within a 320MHz frequency band, the combination of the two lowest-frequency 996-tone resource units and the highest-frequency 996-tone resource unit; Within a 320MHz frequency band, the combination of the lowest frequency 996-tone resource cell and the two highest frequency 996-tone resource cells; The combination of the three lowest-frequency 996-tone resource units within the 320MHz frequency band; The combination of the three highest-frequency 996-tone resource units within the 320MHz frequency band.

24. The communication device according to any one of claims 14-19, characterized in that, The resource unit indication field includes bits of a first preset length; the position of one bit in the bit corresponds to the position of a unit channel in the total channel. When the bit is a first value, the unit channel corresponding to the bit is included in the channel corresponding to the first resource unit; When the bit is the second value, the unit channel corresponding to the bit is not included in the channel corresponding to the first resource unit.

25. The communication device according to any one of claims 14-19, characterized in that, The resource unit indication field includes bits of a second preset length; the position of one bit in the bit corresponds to the position of a unit channel in the frequency band range corresponding to the second resource unit. When the bit is a first value, the unit channel corresponding to the bit is included in the channel corresponding to the first resource unit; When the bit is the second value, the unit channel corresponding to the bit is not included in the channel corresponding to the first resource unit.

26. The communication apparatus according to any one of claims 14-19, characterized in that, The resource unit indication field includes bits of a third preset length; the position of one bit in the bit corresponds to the position of a resource unit in the second resource unit. When the bit is a first value, the resource unit corresponding to the bit is included in the first resource unit; When the bit is a second value, the resource unit corresponding to the bit is not included in the first resource unit.

27. A communication device, characterized in that, Includes processor, memory, and transceiver; The transceiver is used to transmit EHT TB PPDU; The memory is used to store program code; The processor is configured to invoke the program code from the memory to execute the method as described in any one of claims 1-13.

28. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store instructions that, when executed, cause the method as described in any one of claims 1-13 to be implemented.

29. A chip system, characterized in that, include: At least one processor and interface, The processor is configured to generate an EHT TB PPDU, the EHT TB PPDU including a resource unit indication field, the resource unit indication field being configured to indicate a first resource unit used by the communication device to transmit the EHT TB PPDU, the first resource unit being contained in a second resource unit, the second resource unit being one or more resource units allocated to the communication device; The interface is used to send the EHT TB PPDU.

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