Wireless communication method and communication device

Abstract

Provided are a wireless communication method and a communication device. The method comprises: a first device sends a first PPDU, wherein the first PPDU is transmitted in a hybrid mode of a duplicate (DUP) mode and a non-DUP mode. The hybrid mode of the DUP mode and the non-DUP mode can have the advantages of both the DUP mode and the non-DUP mode. The part of the first PPDU transmitted in the DUP mode can improve the reliability of data transmission, and can also improve frequency utilization efficiency. The part of the first PPDU transmitted in the non-DUP mode has high throughput.

Description

Wireless communication methods and communication devices Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a wireless communication method and a communication device. Background Technology

[0002] Related technologies (such as Extremely High Throughput (EHT)) define a duplicate (DUP) transmission method (DUP mode for short). In DUP mode, the transmitted data in the payload portion of the physical layer protocol data unit (PPDU) is repeated on the same frequency. Summary of the Invention

[0003] This application provides a wireless communication method and a communication device. The various aspects covered by this application are described below.

[0004] In a first aspect, a wireless communication method is provided. The method includes: a first device transmitting a first PPDU; wherein the first PPDU is transmitted in a hybrid manner of DUP and non-DUP.

[0005] Secondly, a wireless communication method is provided. The method includes: a second device receiving a first PPDU; wherein the first PPDU is transmitted in a hybrid manner of DUP and non-DUP.

[0006] Thirdly, a communication device is provided. The communication device includes a transmitting unit for transmitting a first PPDU; wherein the first PPDU is transmitted in a hybrid manner of DUP and non-DUP.

[0007] Fourthly, a communication device is provided. The communication device includes a receiving unit for receiving a first PPDU; wherein the first PPDU is transmitted in a hybrid manner of DUP and non-DUP.

[0008] Fifthly, a communication device is provided, including a processor and a memory, the memory for storing one or more computer programs, the processor for calling the computer programs in the memory to enable some or all of the steps of the methods described in the preceding aspects of the communication device.

[0009] Sixthly, embodiments of this application provide a communication system that includes the aforementioned communication device. In another possible design, the system may further include other devices that interact with the communication device as described in the embodiments of this application.

[0010] In a seventh aspect, embodiments of this application provide a computer-readable storage medium storing a computer program that causes a communication device to perform some or all of the steps in the methods described above.

[0011] Eighthly, embodiments of this application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program operable to cause a communication device to perform some or all of the steps of the methods described in the foregoing aspects. In some implementations, the computer program product may be a software installation package.

[0012] Ninthly, embodiments of this application provide a chip including a memory and a processor, the processor being able to call and run a computer program from the memory to implement some or all of the steps described in the methods of the foregoing aspects.

[0013] The hybrid approach of DUP and non-DUP combines the advantages of both methods. The portion of the first PPDU transmitted via DUP improves data transmission reliability and frequency utilization efficiency, while the portion transmitted via non-DUP offers higher throughput. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the wireless communication system used in the embodiments of this application.

[0015] Figure 2 is a schematic diagram of the 6GHz frequency band in some countries.

[0016] Figure 3 is a schematic flowchart of a wireless communication method provided in an embodiment of this application.

[0017] Figure 4 is a schematic diagram of the format of an ultra-high reliability (UHR) multi-user (MU) PPDU provided in an embodiment of this application.

[0018] Figure 5A is an example diagram of the first PPDU provided in Example 1.

[0019] Figure 5B is an example diagram of the first PPDU provided in Example 2.

[0020] Figure 5C is an example diagram of the first PPDU provided in Example 3.

[0021] Figure 5D is an example diagram of the first PPDU provided in Example 4.

[0022] Figure 5E is an example diagram of the first PPDU provided in Example 5.

[0023] Figure 5F is an example diagram of the first PPDU provided in Example 6.

[0024] Figure 6A is an example diagram of a first PPDU transmission method.

[0025] Figure 6B is an example diagram of another first PPDU transmission method.

[0026] Figure 6C is an example diagram of another first PPDU transmission method.

[0027] Figure 7A is an example diagram of another first PPDU transmission method.

[0028] Figure 7B is an example diagram of another first PPDU transmission method.

[0029] Figure 8 is an example diagram of another first PPDU transmission method.

[0030] Figure 9 is an example diagram of another first PPDU transmission method.

[0031] Figure 10 is an example diagram of another first PPDU transmission method.

[0032] Figure 11 is an example diagram of another first PPDU transmission method.

[0033] Figure 12A is a format example diagram of DUP and non-DUP transmission mode fields provided in an embodiment of this application.

[0034] Figure 12B is an example diagram of the format of another DUP and non-DUP transmission mode field provided in an embodiment of this application.

[0035] Figure 12C is an example diagram of the format of another DUP and non-DUP transmission mode field provided in an embodiment of this application.

[0036] Figure 13 is a schematic structural diagram of a communication device 1300 provided in an embodiment of this application.

[0037] Figure 14 is a schematic structural diagram of a communication device 1400 provided in an embodiment of this application.

[0038] Figure 15 is a schematic structural diagram of a communication device provided in an embodiment of this application. Detailed Implementation

[0039] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0040] Communication system

[0041] The technical solutions of this application can be applied to various communication systems, such as wireless local area networks (WLAN), wireless fidelity (WiFi), high-performance radio local area networks (HIPELAN), wide area networks (WAN), cellular networks, or other communication systems. For example, the technical solutions provided in this application can be applied to communication systems using the 802.11 standard. Exemplarily, the 802.11 standard includes, but is not limited to, the 802.11ax standard, the 802.11be standard, the 802.11bn standard, and the next-generation 802.11 standard (post802.11bn).

[0042] Figure 1 shows a schematic diagram of a communication system applicable to an embodiment of this application. Referring to Figure 1, the communication devices in the communication system 100 may include access points (APs) 111 and 112, as well as stations (STAs) 121 and 122. STA 121 can access the network through AP 111, and STA 122 can access the network through AP 112.

[0043] In some implementations, a STA can establish an association with one or more APs, after which the associated STAs and APs can communicate with each other. As shown in Figure 1, AP 111 and STA 121 can communicate after establishing an association, and AP 112 and STA 122 can communicate after establishing an association.

[0044] In some implementations, the communication in the communication system 100 can be communication between an AP and a non-AP STA, communication between two non-AP STAs, or communication between a STA and a peer STA. Here, a peer STA can refer to a device that communicates with the STA's counterpart. For example, a peer STA may be an AP or a non-AP STA.

[0045] It should be understood that Figure 1 exemplarily shows two AP STAs and two non-AP STAs. The communication system 100 may also include more AP STAs, or the communication system 100 may include other numbers of non-AP STAs. This application embodiment does not limit this.

[0046] In addition, the above-mentioned communication system can be applied to scenarios involving multi-device collaboration, such as multi-AP (multi-access points) collaboration or multi-site collaboration.

[0047] In the embodiments of this application, the names of AP and / or STA are not limited. In some scenarios, AP can also be called AP STA, that is, in a sense, AP is also a type of STA. In other scenarios, STA can be called non-AP STA.

[0048] In some scenarios, the aforementioned communication equipment can also be a "multi-link device (MLD)," meaning a device that can communicate through multiple communication links. These multiple communication links can include communication links in different frequency bands, such as millimeter-wave bands and / or low-frequency bands. Typically, if the multi-link device is an access point (AP), it can also be called an "AP MLD." If the multi-link device is a non-AP STA, it can also be called a "non-AP MLD."

[0049] In this application embodiment, the AP can be a device in a wireless network. The AP can be a communication server, router, switch, bridge, or other communication entity. Alternatively, the AP can include various forms of macro base stations, micro base stations, relay stations, etc. Of course, the AP can also be a chip, circuit, or processing system within these various forms of devices, thereby implementing the methods and functions of this application embodiment. APs can be applied in various scenarios, such as sensor nodes in smart cities (e.g., smart water meters, smart electricity meters, smart air quality monitoring nodes), smart devices in smart homes (e.g., smart cameras, projectors, displays, televisions, audio equipment, refrigerators, washing machines, etc.), nodes in the Internet of Things (IoT), entertainment terminals (e.g., AR, VR, and other wearable devices), smart devices in smart offices (e.g., printers, projectors, etc.), vehicle-to-everything (V2X) devices, and some infrastructure in daily life scenarios (e.g., vending machines, supermarket self-service navigation kiosks, self-service checkout machines, self-service ordering machines, etc.).

[0050] In some implementations, the role of the STA in the communication system is not absolute; in some scenarios, the STA can act as an AP. For example, in a scenario where a mobile phone connects to a router, the mobile phone can be a non-AP STA, while when the mobile phone acts as a hotspot for other mobile phones, it takes on the role of an AP.

[0051] In the embodiments of this application, the STA can be a device with wireless transceiver capabilities, such as one that supports the 802.11 series of protocols and can communicate with the AP or other STAs. For example, an STA is any user communication device that allows users to communicate with the AP and thus with the WLAN. STAs include, for example, user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user device, etc.

[0052] In this application embodiment, the STA can also be a device that provides voice / data / image connectivity to the user, such as a handheld device, vehicle device, home device, home appliance, gaming device, etc., with wireless connection function or equipped with a wireless communication module. Examples include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving vehicles, drones or aerial photography equipment, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal devices in 5G networks, or future evolution of public land mobile communication networks. Terminal devices in a network (PLMN) can also be televisions, refrigerators, washing machines, kitchen appliances, door locks, fish tanks, robot vacuum cleaners, game consoles, cameras / camcorders, etc. with wireless connectivity, but this application embodiment is not limited to these.

[0053] By way of example and not limitation, in this embodiment, the STA can also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Examples include smartwatches or smart glasses, as well as devices that focus on a specific type of application function and require cooperation with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0054] Furthermore, in this embodiment, the STA can also be a terminal device in an Internet of Things (IoT) system. IoT is an important component of future information technology development, and its main technical feature is connecting objects to networks through communication technologies, thereby realizing an intelligent network for human-machine interconnection and object-to-object interconnection. In this embodiment, IoT technology can achieve massive connectivity, deep coverage, and low terminal power consumption through technologies such as narrowband (NB).

[0055] Furthermore, in this embodiment, the STA can be a device in a vehicle-to-everything (V2X) system. The communication methods in a V2X system are collectively referred to as V2X (where X represents anything). For example, V2X communication includes: vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, or vehicle-to-network (V2N) communication, etc.

[0056] In addition, in the embodiments of this application, the STA may also include sensors such as smart printers, train detectors, and gas stations. Its main functions include collecting data (some terminal devices), receiving control information and downlink data from the AP, and sending electromagnetic waves to transmit data to the AP.

[0057] In addition, the AP in this application embodiment can be a device for communicating with the STA. The AP can be a network device in a wireless local area network, and the AP can be used to communicate with the STA through the wireless local area network.

[0058] From the perspective of the communication standards supported by the AP, in some implementations, the AP can be a device that supports the 802.11be standard. The AP can also be a device that supports various current and future 802.11 family WLAN standards such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

[0059] From the perspective of the communication standards supported by the STA, in some implementations, non-AP STAs can support the 802.11be standard. Non-AP STAs can also support various current and future 802.11 family of wireless local area networks (WLAN) standards, such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

[0060] In this application embodiment, the frequency bands supported by WLAN technology are not limited. In some implementations, the frequency bands supported by WLAN technology may include, but are not limited to: low frequency bands (e.g., 2.4GHz, 5GHz, 6GHz) and high frequency bands (e.g., 45GHz, 60GHz).

[0061] It should be understood that the specific forms of STA and AP are not specifically limited in the embodiments of this application, and are merely illustrative examples.

[0062] DUP

[0063] Related technologies (such as EHT) define the transmission method of DUP (referred to as DUP method or DUP mode). In DUP method, the transmitted data in the payload portion of the PPDU is duplicated in frequency.

[0064] The following explanation uses the EHT DUP method as an example to illustrate the DUP method.

[0065] EHT DUP mode is an optional mode, applicable only to the 6GHz band. EHT DUP mode is only applicable to EHT single-user (SU) transmissions. EHT DUP mode can only be used with bandwidths of 80 / 160 / 320MHz and cannot use preamble puncturing.

[0066] EHT DUP mode is only applicable to BPSK-DCM modulation, with a rate of -1 / 2 LDPC coding and Nss = 1.

[0067] Setting the PPDU type and compression mode subfield in the U-SIG field to 1 indicates EHT SU transmission, while setting the modulation and coding scheme (MCS) subfield in the user field of the EHT-SIG field to 14 indicates EHT DUP mode.

[0068] The encoding and modulation in EHT DUP mode are described below.

[0069] 1) For an 80MHz EHT MU PPDU transmitted in EHT DUP mode, the lower 484-tone resource unit (RU) is encoded and BPSK-DCM modulated. Then, the lower 484-tone RU is copied to the higher 484-tone RU, and a partial sign change is performed to reduce the peak-to-average ratio (PAPR).

[0070] 2) For a 160MHz EHT MU PPDU transmitted in EHT DUP mode, the lower 996-pass RU is encoded and BPSK-DCM modulated, then the lower 996-pass RU is copied to the higher 996-pass RU, and some symbol changes are made to reduce PAPR.

[0071] 3) For a 320MHz EHT MU PPDU transmitted in EHT DUP mode, the lower 2×996-pass RU is encoded and BPSK-DCM modulated, then the lower 2×996-pass RU is copied to the higher 2×996-pass RU, and some symbol changes are made to reduce PAPR.

[0072] The aforementioned frequency domain replication occurs after LDPC tone mapping and segment deparsing operations.

[0073] The EHT-STF, EHT-LTF, and pilot subcarriers of the 80MHz EHT MU PPDU transmitted in EHT DUP mode are constructed in the same way as the EHT-STF, EHT-LTF, and pilot subcarriers of the 80MHz OFDMA transmitted using EHT MU PPDU, occupying 484 channels RU1 and RU2.

[0074] The EHT-STF, EHT-LTF, and pilot subcarriers of a 160 / 320MHz EHT MU PPDU transmitted in EHT DUP mode are constructed in the same way as the EHT-STF, EHT-LTF, and pilot subcarriers of a 160 / 320MHz non-OFDMA transmitted using an EHT MU PPDU. The MCS and data rate of the EHT DUP are shown in Table 1.

[0075] Table 1

[0076] U-SIG field

[0077] The U-SIG field carries the information needed to decode the PPDU. The following explanation uses the EHT U-SIG field as an example. The EHT U-SIG field consists of two parts: U-SIG-1 and U-SIG-2. The contents of the U-SIG field in the EHT MU PPDU are shown in Table 2.

[0078] Table 2

[0079] 6GHz spectrum and its power spectral density (PSD) requirements

[0080] Related technologies suggest that in some countries, a portion of the 6GHz band is designated as low-power indoor only (LPI only) bandwidth, which can only be used indoors. The PSD (Power Segment Degradation) limit for LPI only bandwidth is relatively strict. For example, in LPI only bandwidth, the PSD is 5dBm / MHz for APs and -1dBm / MHz for STAs. Another portion of the 6GHz band is designated as LPI optional when AFC (Automatic Frequency Coordination) is unavailable. This type of bandwidth has less stringent PSD limitations and can use standard power transmission.

[0081] Figure 2 is a schematic diagram of the 6GHz frequency band in some countries. In Figure 2, the light gray bandwidth represents the LPI selectable bandwidth when AFC is unavailable, and the dashed box represents the LPI-only bandwidth. Table 3 shows the operating frequency bands, maximum EIRP, and maximum EIRP power spectral density for different types of devices within the frequency bands shown in Figure 2. For devices of type Low Power Access Point (LAP) (indoor only) and users connected to LAPs, both APs and STAs use LPI. At a maximum EIRP power spectral density of -1 dBm / MHz, there are strict PSD requirements, reduced coverage range, and uplink / downlink power imbalance (DL&UL Tx Power unbalance). Table 4 shows the STA's Tx Power (dBm) without tone distribution under different regular resource unit (rRU or RRU) sizes.

[0082] Table 3

[0083] Table 4

[0084] As mentioned above, EHT DUP transmission has relatively strict limitations; for example, EHT DUP transmission can only be used without punching. To address this issue, this application proposes the method shown in Figure 3.

[0085] Figure 3 is a schematic flowchart of a wireless communication method provided in an embodiment of this application. The method shown in Figure 3 can be executed by a first device and a second device. Both the first device and the second device can be the communication devices described above. For example, the first device may include an access point (AP), and the second device may include a non-AP STA. Alternatively, the first device may include a non-AP STA, and the second device may include an access point (AP). Or, both the first device and the second device may include a non-AP STA.

[0086] The method shown in Figure 3 may include step S310.

[0087] S310, the first device sends the first PPDU. The second device receives the first PPDU.

[0088] In some embodiments, the first PPDU is transmitted using a hybrid method of DUP and non-DUP. That is, a portion of the bandwidth of the first PPDU is transmitted using DUP, and another portion is transmitted using non-DUP. In this application, the hybrid method of DUP and non-DUP can also be referred to as a hybrid method, meaning that the first PPDU is transmitted using a hybrid method.

[0089] DUP mode can refer to the transmission data in the payload portion of the PPDU being copied in the frequency domain.

[0090] Non-DUP is a non-replicative transmission method. It can also be called a regular method. Non-DUP methods may include one or more of the following: Orthogonal Frequency Division Multiple Access (OFDMA), Non-OFDMA, Single-User Multiple-Input Multiple-Output (SU-MIMO), or Multi-User Multiple-Input Multiple-Output (MU-MIMO).

[0091] The bandwidth of the first PPDU can be relatively large. For example, the bandwidth of the first PPDU can be greater than or equal to 160MHz. Exemplarily, the bandwidth of the first PPDU can be 160MHz or 320MHz. A relatively large bandwidth facilitates the implementation of DUP mode transmission.

[0092] On the one hand, the hybrid approach can combine the advantages of both DUP and non-DUP methods. The portion of the first PPDU transmitted via DUP can improve data transmission reliability and frequency utilization efficiency, while the portion transmitted via non-DUP has higher throughput. For example, the bandwidth of the first PPDU may span different PSD-restricted regions (e.g., the bandwidth of the first PPDU is in LPI-only bandwidth and LPI-selectable bandwidth when AFC is unavailable). In this case, the portion with stricter PSD restrictions (e.g., the portion in LPI-only bandwidth) can be transmitted via DUP, while the portion with looser PSD restrictions (e.g., the portion in LPI-selectable bandwidth when AFC is unavailable) can be transmitted via non-DUP, thereby improving system throughput and spectrum utilization efficiency.

[0093] On the other hand, the hybrid approach offers greater flexibility in application scenarios. For example, it can be used when there are significant bandwidth limitations on the first PPDU. As mentioned above, the first PPDU transmitted via the hybrid approach can be transmitted across bandwidths spanning different PSD (Package Deficit) restriction areas. Furthermore, if one or more sub-channels within the bandwidth of the first PPDU are punctured, and the DUP (Distributed Upgrade) method is restricted to non-punctured channels, then the DUP method can be used for transmission in the non-punctured portions, while the non-DUP method can be used in the punctured portions.

[0094] It should be noted that the first PPDU can be oriented towards the downlink (DL) MU. For example, the DUP-mode transmission portion of the first PPDU may be oriented towards one STA, while the non-DUP-mode transmission portion may be oriented towards one or more other STAs. Alternatively, the first PPDU can be used for DL ​​SU transmission, meaning that both the DUP-mode and non-DUP-mode transmission portions are targeted at the same STA.

[0095] It should be noted that the hybrid method can be an optional transmission method.

[0096] It should be noted that the hybrid method is only applicable to the 6GHz band.

[0097] It should be noted that this application does not limit the format of the first PPDU. For example, the first PPDU can be a UHR MU PPDU or a UHR trigger-based (TB) PPDU. Alternatively, the first PPDU can be a post-UHR PPDU, i.e., the PPDU defined by IEEE 802.11bn's next-generation Wi-Fi 9. The UHR MU PPDU provided in this application will be described below.

[0098] The UHR MU PPDU format is used for transmission to one or more users. The format of the UHR MU PPDU can be shown in Figure 4.

[0099] As shown in Figure 4, the UHR MU PPDU may include the L-STF field, L-LTF field, L-SIG field, RL-SIG field, U-SIG field, UHR-SIG field, UHR-STF field, UHR-LTF field, data field, and PE field.

[0100] As shown in Figure 4, in the UHR MU PPDU, L-STF, L-LTF, L-SIG, RL-SIG, U-SIG, and UHR-SIG can be referred to as UHR pre-modulated fields. UHR-STF, UHR-LTF, data, and PE fields can be referred to as UHR modulated fields.

[0101] It should be noted that for UHR MU PPDUs, each UHR-LTF symbol can have the same guard interval (GI) duration as each data symbol, for example, 0.8 μs, 1.6 μs, or 3.2 μs. The UHR-LTF field includes three types: 1xUHR-LTF, 2xUHR-LTF, and 4xUHR-LTF. The duration without GI for each 1xUHR-LTF, 2xUHR-LTF, or 4xUHR-LTF symbol is 3.2 μs, 6.4 μs, or 12.8 μs, respectively. The duration without GI for data symbols is 12.8 μs.

[0102] It should be noted that the portion of the first PPDU transmitted via non-DUP or DUP mode may include the data fields of the first PPDU. That is, in this application, the data fields of the first PPDU can be transmitted via a hybrid method.

[0103] The preamble in the first PPDU can be generated according to the methods provided in related technologies. For example, the preamble of the first PPDU can be generated based on the bandwidth of the first PPDU. Taking the first PPDU as a UHR MU PPDU as shown in Figure 4 as an example, for the pre-UHR modulated fields, the L-STF, L-LTF, L-SIG, and RL-SIG fields are the same for every 80MHz frequency domain sub-block; the U-SIG and UHR-SIG fields can be different for every 80MHz frequency domain sub-block.

[0104] The mixing method will be described in detail below through examples.

[0105] In some embodiments, the bandwidth of the first PPDU includes at least a first frequency domain sub-block and a second frequency domain sub-block. The first PPDU is transmitted in the first frequency domain sub-block using the DUP method, and the first PPDU is transmitted in the second frequency domain sub-block using the non-DUP method.

[0106] It should be noted that the bandwidth of the first PPDU can include multiple frequency domain sub-blocks, that is, the number of frequency domain sub-blocks included in the bandwidth of the first PPDU can be greater than or equal to 2. The bandwidth of the first PPDU can also include a third frequency domain sub-block or more frequency domain sub-blocks.

[0107] The first frequency domain sub-block and the second frequency domain sub-block can be any two of the multiple frequency domain sub-blocks included in the first PPDU. For example, the first frequency domain sub-block can be a frequency domain sub-block with a lower frequency, and the second frequency domain sub-block can be a frequency domain sub-block with a higher frequency. Alternatively, the first frequency domain sub-block can be a frequency domain sub-block with a higher frequency, and the second frequency domain sub-block can be a frequency domain sub-block with a lower frequency.

[0108] In some embodiments, the first or second frequency domain sub-block can be greater than or equal to 80MHz. For example, the first frequency domain sub-block can be 80MHz or 160MHz. The second frequency domain sub-block can be the same size as the first frequency domain sub-block. For example, both the first and second frequency domain sub-blocks are 80MHz. Alternatively, both the first and second frequency domain sub-blocks are 160MHz. A larger first frequency domain sub-block (greater than or equal to 80MHz) is advantageous for implementing DUP (Digital Upgrade) transmission. Furthermore, the DUP methods in related technologies are all designed for frequencies greater than or equal to 80MHz. Therefore, setting the first frequency domain sub-block to greater than or equal to 80MHz allows the DUP methods defined in related technologies to be applied to this application, thereby reducing modifications to the standard.

[0109] The transmission methods of different frequency domain sub-blocks in the first PPDU will be explained in detail below with reference to Figures 5A to 5F, through Examples 1 to 6.

[0110] Example 1

[0111] Figure 5A is an example diagram of the first PPDU provided in Example 1.

[0112] In Example 1, the bandwidth of the first PPDU is 160MHz. The first PPDU includes frequency domain sub-block 1 and frequency domain sub-block 2, which are the first frequency domain sub-block and the second frequency domain sub-block, respectively. Both frequency domain sub-block 1 and frequency domain sub-block 2 are 80MHz.

[0113] It should be noted that frequency domain sub-block 1 and frequency domain sub-block 2 can be arranged from high to low frequency (i.e., frequency domain sub-block 1 is the frequency domain sub-block with the highest frequency) or from low to high frequency (i.e., frequency domain sub-block 1 is the frequency domain sub-block with the lowest frequency).

[0114] As shown in Figure 5A, the first PPDU is transmitted in the 80MHz frequency domain sub-block 1 via DUP mode, and the first PPDU is transmitted in the 80MHz frequency domain sub-block 2 via non-DUP mode.

[0115] Example 2

[0116] Figure 5B is an example diagram of the first PPDU provided in Example 2.

[0117] In Example 2, the bandwidth of the first PPDU is 320MHz. The first PPDU includes frequency domain sub-blocks 1 to 4. Frequency domain sub-blocks 1 to 4 are all 80MHz. Frequency domain sub-block 1 is the first frequency domain sub-block. Any one of frequency domain sub-blocks 2 to 4 can be a second frequency domain sub-block.

[0118] It should be noted that frequency domain sub-blocks 1 to 4 can be arranged from high to low frequency or from low to high frequency.

[0119] As shown in Figure 5B, the first PPDU is transmitted in the 80MHz frequency domain sub-block 1 via DUP mode, and the first PPDU is transmitted in the 80MHz frequency domain sub-blocks 2 to 80MHz frequency domain sub-blocks 4 via non-DUP mode.

[0120] Example 3

[0121] Figure 5C is an example diagram of the first PPDU provided in Example 3.

[0122] In Example 3, the bandwidth of the first PPDU is 320MHz. The first PPDU includes frequency domain sub-blocks 1 to 4. Frequency domain sub-blocks 1 to 4 are all 80MHz. Frequency domain sub-block 1 or frequency domain sub-block 2 can be the first frequency domain sub-block. Frequency domain sub-block 3 or frequency domain sub-block 4 can be the second frequency domain sub-block.

[0123] It should be noted that frequency domain sub-blocks 1 to 4 can be arranged from high to low frequency or from low to high frequency.

[0124] As shown in Figure 5C, the first PPDU is transmitted in the 80MHz frequency domain sub-block 1 and 80MHz frequency domain sub-block 2 via DUP mode, and the first PPDU is transmitted in the 80MHz frequency domain sub-block 3 and 80MHz frequency domain sub-block 4 via non-DUP mode.

[0125] Example 4

[0126] Figure 5D is an example diagram of the first PPDU provided in Example 4.

[0127] In Example 4, the bandwidth of the first PPDU is 320MHz. The first PPDU includes frequency domain sub-blocks 1 to 4. Frequency domain sub-blocks 1 to 4 are all 80MHz. Any one of frequency domain sub-blocks 1 to 3 can be a first frequency domain sub-block. Frequency domain sub-block 4 can be a second frequency domain sub-block.

[0128] It should be noted that frequency domain sub-blocks 1 to 4 can be arranged from high to low frequency or from low to high frequency.

[0129] As shown in Figure 5D, the first PPDU is transmitted in the 80MHz frequency domain sub-blocks 1 to 3 via DUP mode, and the first PPDU is transmitted in the 80MHz frequency domain sub-block 4 via non-DUP mode.

[0130] Example 5

[0131] Figure 5E is an example diagram of the first PPDU provided in Example 5.

[0132] In Example 5, the bandwidth of the first PPDU is 320MHz. The first PPDU includes frequency domain sub-blocks 1 to 4. Frequency domain sub-blocks 1 to 4 are all 80MHz. Frequency domain sub-block 1 or frequency domain sub-block 3 can be the first frequency domain sub-block. Frequency domain sub-block 2 or frequency domain sub-block 4 can be the second frequency domain sub-block.

[0133] It should be noted that frequency domain sub-blocks 1 to 4 can be arranged from high to low frequency or from low to high frequency.

[0134] As shown in Figure 5E, the first PPDU is transmitted in the 80MHz frequency domain sub-block 1 and 80MHz frequency domain sub-block 3 via DUP mode, and the first PPDU is transmitted in the 80MHz frequency domain sub-block 2 and 80MHz frequency domain sub-block 4 via non-DUP mode.

[0135] Example 6

[0136] Figure 5F is an example diagram of the first PPDU provided in Example 6.

[0137] In Example 6, the bandwidth of the first PPDU is 320MHz. The first PPDU includes frequency domain sub-block 1 and frequency domain sub-block 2. Both frequency domain sub-block 1 and frequency domain sub-block 2 are 160MHz. Frequency domain sub-block 1 can be a first frequency domain sub-block. Frequency domain sub-block 2 can be a second frequency domain sub-block.

[0138] It should be noted that frequency domain sub-block 1 and frequency domain sub-block 2 can be arranged from high to low frequency or from low to high frequency.

[0139] As shown in Figure 5F, the first PPDU is transmitted in the 160MHz frequency domain sub-block 1 via DUP mode, and the first PPDU is transmitted in the 160MHz frequency domain sub-block 2 via non-DUP mode.

[0140] The following explains how to implement DUP mode transmission on the first frequency domain sub-block.

[0141] In some embodiments, the first frequency domain subblock may include a first RRU and one or more second RRUs. The data carried on the second RRU may be a copy of the data carried on the first RRU.

[0142] For example, data can be encoded and modulated on a first RRU and copied to one or more second RRUs. The modulation scheme of the data on the first RRU can be BPSK DCM modulation.

[0143] The size of the first RRU is the same as that of the second RRU. In other words, the number of tones of the first RRU is the same as that of the second RRU.

[0144] The first RRU can be the RRU with the smallest RRU index in the first frequency domain sub-block. That is, in this application, the data carried by the RRU with the smallest index within the frequency domain sub-block can be copied to other RRUs. It should be noted that when the first frequency domain sub-block is punctured, the RRU with the smallest RRU index in the first frequency domain sub-block is: the RRU with the smallest RRU index in the unpunctured portion of the first frequency domain sub-block.

[0145] As one possible implementation, if both the first and second frequency domain sub-blocks are 80MHz, both the first RRU and the second RRU can be 484-channel RRUs.

[0146] For example, if the bandwidth of the first PPDU is 160MHz and the first frequency domain sub-block is 80MHz, the first RRU can be a 484-tone RRU[1+(m-1)*2], and the second RRU can be a 484-tone RRU[2+(m-1)*2]. That is, data can be encoded and modulated on the 484-tone RRU[1+(m-1)*2] and copied to the 484-tone RRU[2+(m-1)*2]. Here, m represents the m-th 80MHz frequency domain sub-block from low to high frequency in the 160MHz PPDU, and m = 1 or 2.

[0147] For example, if the bandwidth of the first PPDU is 320MHz and the first frequency domain sub-block is 80MHz, the first RRU can be a 484-tone RRU[1+(n-1)*2], and the second RRU can be a 484-tone RRU[2+(n-1)*2]. That is, data can be encoded and modulated on the 484-tone RRU[1+(n-1)*2] and copied to the 484-tone RRU[2+(n-1)*2]. Here, n represents the nth 80MHz frequency domain sub-block from low to high frequency in the 320MHz PPDU, and n = 1, 2, 3, or 4.

[0148] Figure 6A is an example of the transmission mode of the first PPDU when m=1. As shown in Figure 6A, the first frequency domain sub-block is the first 80MHz frequency domain sub-block from low to high frequency, m=1, and the data carried by 484-tone RRU1 is copied to 484-tone RRU2. The second frequency domain sub-block is the second 80MHz frequency domain sub-block from low to high frequency, and non-OFDMA, OFDMA, SU-MIMO, or MU-MIMO transmission can be performed on this second frequency domain sub-block.

[0149] Figure 6B is an example diagram of the transmission mode of the first PPDU when m=2. As shown in Figure 6B, the first frequency domain sub-block is the second 80MHz frequency domain sub-block from low to high frequency, m=2, and the data carried by 484-tone RRU3 is copied to 484-tone RRU4. The second frequency domain sub-block is the first 80MHz frequency domain sub-block from low to high frequency, and non-OFDMA, OFDMA, SU-MIMO, or MU-MIMO transmission can be performed on this second frequency domain sub-block.

[0150] Figure 6C is an example diagram of the transmission mode of the first PPDU when n=2 or n=3. As shown in Figure 6C, the first frequency domain sub-block is the second 80MHz frequency domain sub-block from low to high frequency. When n=2, the data carried by 484-tone RRU3 is copied to 484-tone RRU4. The first frequency domain sub-block is the fourth 80MHz frequency domain sub-block from low to high frequency. When n=4, the data carried by 484-tone RRU7 is copied to 484-tone RRU8. The second frequency domain sub-block is the first or third 80MHz frequency domain sub-block from low to high frequency. Non-OFDMA, OFDMA, SU-MIMO, or MU-MIMO transmission can be performed on this second frequency domain sub-block.

[0151] As another possible implementation, if both the first and second frequency domain sub-blocks are 160MHz, both the first and second RRUs can be 996-channel RRUs.

[0152] For example, if the bandwidth of the first PPDU is 320MHz and the first frequency domain sub-block is 160MHz, the first RRU can be a 996-tone RRU[1+(p-1)*2], and the second RRU can be a 996-tone RRU[2+(p-1)*2]. That is, data can be encoded and modulated on the 996-tone RRU[1+(p-1)*2] and copied to the 996-tone RRU[2+(p-1)*2]. Here, p represents the p-th 160MHz frequency domain sub-block from low to high frequency in the 320MHz PPDU, and p = 1 or 2.

[0153] Figure 7A is an example of the transmission mode of the first PPDU when p=1. As shown in Figure 7A, the first frequency domain sub-block is the first 160MHz frequency domain sub-block from low to high frequency, p=1, and the data carried by 996-tone RRU1 is copied to 996-tone RRU2. The second frequency domain sub-block is the second 160MHz frequency domain sub-block from low to high frequency, and non-OFDMA, OFDMA, SU-MIMO, or MU-MIMO transmission can be performed on this second frequency domain sub-block.

[0154] Figure 7B is an example of the transmission mode of the first PPDU when p=2. As shown in Figure 7B, the first frequency domain sub-block is the second 160MHz frequency domain sub-block from low to high frequency, p=2, and the data carried by 996-tone RRU3 is copied to 996-tone RRU4. The second frequency domain sub-block is the first 160MHz frequency domain sub-block from low to high frequency, and non-OFDMA, OFDMA, SU-MIMO, or MU-MIMO transmission can be performed on this second frequency domain sub-block.

[0155] In some embodiments, frequency domain sub-blocks transmitted in DUP mode allow preamble puncturing, meaning that one or more sub-channels in the first frequency domain sub-block can be punctured.

[0156] For example, if the first frequency domain sub-block is 80MHz, one 20MHz sub-channel within that sub-block can be punctured; that is, only one 20MHz sub-channel is allowed to be punctured. In this case, the allowed preamble puncturing pattern can be represented by a first bitmap. The first bitmap can be, for example, 0111, 1011, 1101, 1110. The four bits in the first bitmap represent the four 20MHz sub-channels arranged in ascending frequency order. In the first bitmap, 0 indicates that the corresponding 20MHz sub-channel is punctured, and a value of 1 indicates that the corresponding 20MHz sub-channel is not punctured.

[0157] For example, if the first frequency domain sub-block is 80MHz, one or two 20MHz sub-channels within the first frequency domain sub-block can be punctured, meaning that puncturing one or two 20MHz sub-channels is allowed. In this case, the allowed preamble puncturing pattern can be represented by the first bitmap. The first bitmap can be, for example, 0111, 1011, 1101, 1110, 1001, 1100, 0011.

[0158] For example, if the first frequency domain sub-block is 160MHz, one or two 20MHz sub-channels within the first frequency domain sub-block can be punctured, meaning one or two 20MHz sub-channels are allowed to be punctured. In this case, the allowed preamble puncturing pattern can be represented by the second bitmap. The second bitmap could be, for example, 0111 1111,1011 1111,1101 1111,1110 1111,1111 0111,1111 1011,1111 1101,1111 1110,0011 1111,1100 1111,1111 0011,1111 1100. The 8 bits in the second bitmap represent the 8 20MHz sub-channels arranged in ascending frequency order. In the second bit diagram, 0 indicates that the corresponding 20MHz sub-channel is punched, and 1 indicates that the corresponding 20MHz sub-channel is not punched.

[0159] The DUP method in the case of drilling is explained below.

[0160] When one or more sub-channels in the first frequency domain sub-block are punctured, both the first RRU and the second RRU belong to the bandwidth of the unpunctured first PPDU. That is, the data carried on the first RRU can be copied to the unpunctured RRU. The following explains different scenarios.

[0161] As one possible implementation, the first frequency domain sub-block is 80MHz, and the bandwidth of the punctured sub-channel can be 20MHz. Both the first and second RRUs can be 242-tone RRUs. For example, the smallest indexed 242-tone RRU can be encoded and BPSK DCM modulated, and then the smallest indexed 242-tone RRU can be copied to the remaining one or two 242-tone RRUs.

[0162] For example, if one subchannel in the first frequency domain subblock is punctured, the bandwidth of the unpunctured first PPDU can include the first RRU and two second RRUs, meaning that the data carried on the first RRU can be copied to the two second RRUs.

[0163] For example, if one subchannel in the first frequency domain subblock is punctured, the bandwidth of the unpunctured first PPDU can include the first RRU and one second RRU, meaning the data carried on the first RRU can be copied to one second RRU. If the expected gain can be achieved by copying the RU once (a total of 2 transmissions), copying once can be considered.

[0164] For example, if two sub-channels in the first frequency domain sub-block are punctured, the bandwidth of the first PPDU that is not punctured can include the first RRU and one second RRU, that is, the data carried on the first RRU can be copied to one second RRU.

[0165] The following examples illustrate different punching patterns.

[0166] For example, when the first bit map is 0111, the data is encoded and modulated on 242-tone RRU[2+(m-1)*4], and then the data on 242-tone RRU[2+(m-1)*4] is copied to 242-tone RRU[3+(m-1)*4] and / or 242-tone RRU[4+(m-1)*4].

[0167] For example, when the first bit map is 1011, the data is encoded and modulated on 242-tone RRU[1+(m-1)*4], and then the data of 242-tone RRU[1+(m-1)*4] is copied to 242-tone RRU[3+(m-1)*4] and / or 242-tone RRU[4+(m-1)*4].

[0168] For example, when the first bit map is 1101, the data is encoded and modulated on 242-tone RRU[1+(m-1)*4], and then the data of 242-tone RRU[1+(m-1)*4] is copied to 242-tone RRU[2+(m-1)*4] and / or 242-tone RRU[4+(m-1)*4].

[0169] For example, when the first bit map is 1110, the data is encoded and modulated on 242-tone RRU[1+(m-1)*4], and then the data of 242-tone RRU[1+(m-1)*4] is copied to 242-tone RRU[2+(m-1)*4] and / or 242-tone RRU[3+(m-1)*4].

[0170] For example, when the first bit map is 1001, the data is encoded and modulated on 242-tone RRU[1+(m-1)*4], and then the data of 242-tone RRU[1+(m-1)*4] is copied to 242-tone RRU[4+(m-1)*4].

[0171] For example, when the first bit map is 1100, the data is encoded and modulated on 242-tone RRU[1+(m-1)*4], and then the data of 242-tone RRU[1+(m-1)*4] is copied to 242-tone RRU[2+(m-1)*4].

[0172] For example, when the first bit map is 0011, the data is encoded and modulated on 242-tone RRU[3+(m-1)*4], and then the data on 242-tone RRU[3+(m-1)*4] is copied to 242-tone RRU[4+(m-1)*4].

[0173] In the example above, m represents the m-th 80MHz frequency domain sub-block in the first PPDU, from low to high frequency. When the bandwidth of the first PPDU is 320MHz, m = 1, 2, 3, or 4. When the bandwidth of the first PPDU is 160MHz, m = 1 or 2.

[0174] The following describes the details through Examples 1 and 2.

[0175] Example 1

[0176] Figure 8 is an example diagram of a transmission method of a first PPDU provided in Embodiment 1.

[0177] As shown in Figure 8, in the lower 80MHz frequency domain sub-block (i.e., the second frequency domain sub-block), non-DUP transmission is used, facing STA1 via non-OFDMA transmission. In the higher 80MHz frequency domain sub-block (i.e., the first frequency domain sub-block), DUP transmission is used, facing STA2, and the third 20MHz sub-channel is punctured, i.e., puncturing mode 1101. Data is encoded and modulated on 242-tone RRU5, and then the data from 242-tone RRU5 is copied to 242-tone RRU6 and 242-tone RRU8.

[0178] Example 2

[0179] Figure 9 is an example diagram of a transmission method of a first PPDU provided in Embodiment 2.

[0180] As shown in Figure 9, in the first 80MHz frequency domain sub-block, non-DUP transmission is used, facing STA1, and 996-tone RRU1 is allocated for transmission. In the second 80MHz frequency domain sub-block, DUP transmission is used, facing STA2, and the third 20MHz sub-channel is punctured (puncturing mode 1101). Data is encoded and modulated on 242-tone RRU5, and then the data from 242-tone RRU5 is copied to 242-tone RRU6 and 242-tone RRU8. In the third 80MHz frequency domain sub-block, DUP transmission is used, facing STA3, and the third and fourth 20MHz sub-channels are punctured (puncturing mode 1100). Data is encoded and modulated on 242-tone RRU9, and then the data from 242-tone RRU9 is copied to 242-tone RRU10. In the fourth 80MHz frequency domain sub-block, non-DUP transmission is used, facing STA4, and 996-tone RRU4 is allocated for transmission.

[0181] As one possible implementation, the first frequency domain sub-block is 160MHz, one sub-channel in the first frequency domain sub-block is punctured, and the bandwidth of the punctured sub-channel is 20MHz. The first RRU and the second RRU are both 484+242 channel RMRUs. For example, the bandwidth of the first PPDU that is not punctured includes the first RRU, one second RRU, and 20MHz of unused bandwidth.

[0182] For example, when the second bit map is 0111 1111, the data is encoded and modulated on 484+242-tone RMRU[1+(p-1)*8], and then the data in 484+242-tone RMRU[1+(p-1)*8] is copied to any RMRU in 484+242-tone RMRU[5+(p-1)*8] to 484+242-tone RMRU[8+(p-1)*8], for example, 484+242-tone RMRU[8+(p-1)*8].

[0183] For example, when the second bit map is 1011 1111, the data is encoded and modulated on 484+242-tone RMRU[2+(p-1)*8], and then the data in 484+242-tone RMRU[2+(p-1)*8] is copied to any RMRU in 484+242-tone RMRU[5+(p-1)*8] to 484+242-tone RMRU[8+(p-1)*8], for example, 484+242-tone RMRU[8+(p-1)*8].

[0184] For example, when the second bit map is 1101 1111, the data is encoded and modulated on 484+242-tone RMRU[3+(p-1)*8], and then the data in 484+242-tone RMRU[3+(p-1)*8] is copied to any RMRU in 484+242-tone RMRU[5+(p-1)*8], for example, 484+242-tone RMRU[8+(p-1)*8].

[0185] For example, when the second bit map is 1110 1111, the data is encoded and modulated on 484+242-tone RMRU[4+(p-1)*8], and then the data in 484+242-tone RMRU[4+(p-1)*8] is copied to any RMRU in 484+242-tone RMRU[5+(p-1)*8] to 484+242-tone RMRU[8+(p-1)*8], for example, 484+242-tone RMRU[8+(p-1)*8].

[0186] For example, when the second bit map is 1111 0111, the data is encoded and modulated on any one of the RMRUs from 484+242-tone RMRU[1+(p-1)*8] to 484+242-tone RMRU[4+(p-1)*8], for example, 484+242-tone RMRU[4+(p-1)*8]. Then the data in 484+242-tone RMRU[4+(p-1)*8] is copied to 484+242-tone RMRU[5+(p-1)*8].

[0187] For example, when the second bit map is 1111 1011, the data is encoded and modulated on any one of the RMRUs from 484+242-tone RMRU[1+(p-1)*8] to 484+242-tone RMRU[4+(p-1)*8], for example, 484+242-tone RMRU[4+(p-1)*8]. Then the data from 484+242-tone RMRU[4+(p-1)*8] is copied to 484+242-tone RMRU[6+(p-1)*8].

[0188] For example, when the second bit map is 1111 1101, the data is encoded and modulated on any one of the RMRUs from 484+242-tone RMRU[1+(p-1)*8] to 484+242-tone RMRU[4+(p-1)*8], for example, 484+242-tone RMRU[4+(p-1)*8]. Then the data from 484+242-tone RMRU[4+(p-1)*8] is copied to 484+242-tone RMRU[7+(p-1)*8].

[0189] For example, when the second bit map is 1111 1110, the data is encoded and modulated on any one of the RMRUs from 484+242-tone RMRU[1+(p-1)*8] to 484+242-tone RMRU[4+(p-1)*8], for example, 484+242-tone RMRU[4+(p-1)*8]. Then the data from 484+242-tone RMRU[4+(p-1)*8] is copied to 484+242-tone RMRU[8+(p-1)*8].

[0190] In the example above, p represents the p-th 160MHz frequency domain sub-block in the first PPDU from low to high frequency. When the bandwidth of the first PPDU is 320MHz, p = 1 or 2.

[0191] The following detailed description is based on Example 3.

[0192] Example 3

[0193] Figure 10 is an example diagram of a transmission method for a first PPDU provided in Embodiment 3. The first PPDU is a 320MHz PPDU.

[0194] As shown in Figure 9, in the first 160MHz frequency domain sub-block, DUP mode is used for transmission, facing STA2, and the eighth 20MHz sub-channel is punctured, i.e., the puncturing pattern is 1111 1110. Data is encoded and modulated on 484+242-tone RMRU4, and then the data from 484+242-tone RMRU4 is copied to 484+242-tone RMRU8. In the second 160MHz frequency domain sub-block, non-DUP mode is used for transmission, and STA1 is allocated 2*996-tone RRU2 for transmission. The fourth 20MHz sub-channel is not used.

[0195] As another possible implementation, the first frequency domain sub-block is 160MHz, and two sub-channels in the first frequency domain sub-block are punctured, with a bandwidth of 20MHz for each punctured sub-channel. Both the first and second RRUs are 484-channel RRUs. For example, the bandwidth of the unpunctured first PPDU includes the first RRU and two second RRUs.

[0196] For example, when the second bit map is 0011 1111, the data is encoded and modulated on 484-tone RRU[2+(p-1)*4], and then the data on 484-tone RRU[2+(p-1)*4] is copied to 484-tone RRU[3+(p-1)*4] and 484-tone RRU[4+(p-1)*4].

[0197] When the second bitmap is 1100 1111, the data is encoded and modulated on 484-tone RRU[1+(p-1)*4], and then the data of 484-tone RRU[1+(p-1)*4] is copied to 484-tone RRU[3+(p-1)*4] and 484-tone RRU[4+(p-1)*4].

[0198] When the second bit map is 1111 0011, the data is encoded and modulated on 484-tone RRU[1+(p-1)*4], and then the data of 484-tone RRU[1+(p-1)*4] is copied to 484-tone RRU[2+(p-1)*4] and 484-tone RRU[4+(p-1)*4].

[0199] When the second bit map is 1111 1100, the data is encoded and modulated on 484-tone RRU[1+(p-1)*4], and then the data of 484-tone RRU[1+(p-1)*4] is copied to 484-tone RRU[2+(p-1)*4] and 484-tone RRU[3+(p-1)*4].

[0200] In the example above, p represents the p-th 160MHz frequency domain sub-block in the first PPDU from low to high frequency. When the bandwidth of the first PPDU is 320MHz, p = 1 or 2.

[0201] Example 4

[0202] Figure 11 is an example diagram of a transmission method for a first PPDU provided in Embodiment 4. The first PPDU is a 320MHz PPDU.

[0203] As shown in Figure 11, in the first 160MHz frequency domain sub-block, non-DUP mode is used for transmission, and STA1 is allocated 2*996-tone RRU1s for transmission. In the second 160MHz frequency domain sub-block, DUP mode is used for transmission, facing STA2, and the first and second 20MHz sub-channels are punctured, i.e., the puncturing mode is 0011 1111. The data is encoded and modulated on 484-tone RRU6, and then the data from 484-tone RRU6 is copied to 484-tone RRU7 and 484-tone RRU8.

[0204] It should be noted that the scheme described above, which allows preamble puncturing of frequency domain sub-blocks transmitted via DUP in the hybrid mode, can also be applied in the non-hybrid mode. In other words, in the non-hybrid mode, i.e., when the first PPDU is transmitted via DUP, preamble puncturing can be performed on the frequency domain sub-blocks transmitted via DUP. The specific implementation of frequency domain sub-blocks transmitted via DUP is detailed above and will not be repeated here.

[0205] In some embodiments, the first device can send first information. The second device can receive the first information. The first information can be related to the transmission mode of the first PPDU. That is, the first information can be used for information related to the interaction between the first device and the second device in a hybrid manner.

[0206] This application does not limit the name of the field carrying the first information. The field carrying the first information may be called the DUP and non-DUP transmission mode field.

[0207] In some embodiments, the first information may include first indication information. The first indication information may be used to indicate whether the first PPDU is transmitted in a mixed manner of DUP and non-DUP.

[0208] The first indication information can be carried in the first field. The value of the first field is a first specific value, which can indicate that the first PPDU was not transmitted using a mixed DUP and non-DUP method; the value of the first field is not a first specific value, which can indicate that the first PPDU was transmitted using a mixed DUP and non-DUP method. The first specific value can be, for example, 0 or the maximum value of the first field.

[0209] In some embodiments, the first information may include second indication information. The second indication information is used to indicate one or more of the following: the position of the frequency domain sub-block transmitted via DUP mode within the bandwidth of the first PPDU; and the position of the frequency domain sub-block transmitted via non-DUP mode within the bandwidth of the first PPDU. For example, if the frequency domain sub-block is 80MHz and the bandwidth of the first PPDU is 160MHz, the second indication information may indicate whether the 80MHz frequency domain sub-block transmitted via DUP mode is at a higher or lower 80MHz within 160MHz, and / or, the second indication information may indicate whether the 80MHz frequency domain sub-block transmitted via non-DUP mode is at a higher or lower 80MHz within 160MHz. Taking an 80MHz frequency domain sub-block and a 320MHz bandwidth for the first PPDU as an example, the second indication information can indicate which of the four frequency domain sub-blocks in 320MHz the 80MHz frequency domain sub-block transmitted via DUP mode is located in, and / or, the second indication information can indicate which of the four frequency domain sub-blocks in 320MHz the 80MHz frequency domain sub-block transmitted via non-DUP mode is located in. Taking a 160MHz frequency domain sub-block and a 320MHz bandwidth for the first PPDU as an example, the second indication information can indicate whether the 160MHz frequency domain sub-block transmitted via DUP mode is located at a higher or lower 160MHz within 320MHz, and / or, the second indication information can indicate whether the 160MHz frequency domain sub-block transmitted via non-DUP mode is located at a higher or lower 160MHz within 320MHz.

[0210] In some embodiments, the second indication information can be represented by a bitmap. The bitmap may include a first bit, which may correspond to a frequency domain sub-block in the first PPDU. A first value for the first bit can indicate that the frequency domain sub-block corresponding to the first bit is transmitted via DUP mode, and a second value for the first bit can indicate that the frequency domain sub-block corresponding to the first bit is transmitted via non-DUP mode. The first value can be 0, and the second value can be 1. Alternatively, the first value can be 1, and the second value can be 0.

[0211] For example, a bitmap may include multiple bits, each corresponding one-to-one with a frequency domain sub-block within the bandwidth of the first PPDU. Bits outside the bandwidth of the first PPDU are reserved. For instance, if the bandwidth of the first PPDU is 160MHz and the frequency domain sub-block is 80MHz, the bitmap may include four bits, where the lowest-numbered bit corresponds to the 80MHz frequency domain sub-block within the bandwidth of the first PPDU, and is the lowest 80MHz frequency domain sub-block within the bandwidth of the first PPDU. Each consecutive bit in the bitmap corresponds to the next higher-frequency 80MHz frequency domain sub-block. That is, the lowest-numbered bit and its next consecutively numbered bit correspond to the lower and higher 80MHz frequency domain sub-blocks, respectively, and the remaining two bits in the bitmap are reserved. For instance, if the bandwidth of the first PPDU is 320MHz and the frequency domain sub-block is 80MHz, the bitmap may include four bits, each corresponding to one of four 80MHz frequency domain sub-blocks in ascending (or descending) frequency order. For example, the bandwidth of the first PPDU is 320MHz, the frequency domain sub-block is 160MHz, and the bit map may include 4 bits, wherein the lowest numbered bit corresponds to the 160MHz frequency domain sub-block within the bandwidth of the first PPDU, and is the lowest 160MHz frequency domain sub-block within the bandwidth of the first PPDU. Each consecutive bit in the bit map corresponds to the next higher frequency 160MHz frequency domain sub-block. That is, the lowest numbered bit and its next consecutive numbered bit correspond to the lower 160MHz and the higher 160MHz, respectively, and the remaining 2 bits in the bit map are reserved.

[0212] In some embodiments, the value of the second indication information can correspond one-to-one with the transmission mode of each frequency domain sub-block within the bandwidth of the first PPDU, wherein the transmission mode is either DUP mode or non-DUP mode. The combination of transmission modes of each frequency domain sub-block within the bandwidth of the first PPDU can be referred to as a transmission mode. Therefore, the value of the second indication information can correspond one-to-one with the transmission mode of the first PPDU.

[0213] The transmission mode can be represented by [a,b] or [a,b,c,d], where the values ​​within the brackets [] represent the transmission mode of each frequency sub-block within the first PPDU bandwidth. For example, a value of 0 indicates a DUP mode, and a value of 1 indicates a non-DUP mode. Similarly, a value of 1 indicates a DUP mode, and a value of 0 indicates a non-DUP mode.

[0214] In some embodiments, the second indication information may be carried in a second field, and the value of the second field may correspond one-to-one with the transmission mode of the first PPDU.

[0215] Optionally, if the first PPDU is transmitted in a non-hybrid manner, it may not be necessary to indicate the second indication information. For example, the second field may not exist, or the value of the second field may be invalid.

[0216] Optionally, if the first PPDU is transmitted in a mixed manner, the second field exists and the value of the second field is valid.

[0217] In some embodiments, the first indication information and the second indication information may be carried in the same field. For example, both the first indication information and the second indication information may be carried in the first field. For example, if the first PPDU is transmitted in a hybrid mode, the first field may carry both the first and second indication information. Alternatively, if the first PPDU is transmitted in a non-hybrid mode, the first field may carry only the first indication information.

[0218] In some embodiments, the first information may include third indication information. The third indication information may be used to indicate one or more of the following: the bandwidth of a frequency domain sub-block transmitted via DUP; the bandwidth of a frequency domain sub-block transmitted via non-DUP. When only one type of frequency domain sub-block bandwidth is allowed, the first information may not include the third indication information. For example, when only 80MHz frequency domain sub-blocks are allowed (i.e., bandwidth can only be divided through 80MHz frequency domain sub-blocks, or transmission is only allowed per 80MHz), the first information may not include the third indication information. When multiple frequency domain sub-block bandwidths are allowed, the first information may include the third indication information. For example, when 80MHz or 160MHz frequency domain sub-blocks are allowed (i.e., bandwidth can be divided through 80MHz or 160MHz frequency domain sub-blocks, or transmission is allowed per 80MHz or per 160MHz), the first information may include the third indication information. For example, the third indication information may be used to indicate whether the frequency domain sub-block is 80MHz or 160MHz.

[0219] In some embodiments, the third indication information may be carried in a third field. The third field may occupy 1 bit. For example, a value of 0 in the third field may indicate that the bandwidth of the frequency domain sub-block is 80MHz; a value of 1 in the third field may indicate that the bandwidth of the frequency domain sub-block is 160MHz. Alternatively, a value of 1 in the third field may indicate that the bandwidth of the frequency domain sub-block is 80MHz; a value of 0 in the third field may indicate that the bandwidth of the frequency domain sub-block is 160MHz.

[0220] As one possible implementation, when only 80MHz frequency domain sub-blocks are allowed, the field carrying the first information can occupy 4 bits, as shown in Figure 12A. When 80MHz or 160MHz frequency domain sub-blocks are allowed, the field carrying the first information can occupy 5 bits, as shown in Figure 12B. The DUP and non-DUP transmission mode fields are explained in detail below using schemes 1 to 4.

[0221] Option 1

[0222] Scheme 1 is for cases where only 80MHz frequency domain sub-blocks are allowed. The values ​​of the DUP and non-DUP transmission mode fields indicate: whether the first PPDU is transmitted in a mixed manner (i.e., the first indication information), and the transmission mode of the first PPDU (i.e., the second indication information).

[0223] Table 5 shows examples of the values ​​and meanings of the DUP and non-DUP transport mode fields.

[0224] Table 5

[0225] It should be noted that Table 5 is merely an example. Some of the contents of Table 5 can be implemented independently. The values ​​and descriptions of the DUP and non-DUP transmission mode fields in Table 5 can be adjusted, and this application does not limit this.

[0226] Option 2

[0227] Scheme 2 is for cases where only 80MHz frequency domain sub-blocks are allowed. The DUP and non-DUP transmission mode fields indicate: whether the first PPDU is transmitted in a mixed manner of DUP and non-DUP (i.e., the first indication information), and the bit map (i.e., the second indication information).

[0228] When the bandwidth of the first PPDU is 160MHz, the allowed transmission modes are [0 1], [1 0]. A DUP and non-DUP transmission mode field of 01 indicates a transmission mode of [0 1]. A DUP and non-DUP transmission mode field of 10 indicates a transmission mode of [1 0]. A DUP and non-DUP transmission mode field of 00 indicates a non-mixed transmission mode; or, a DUP and non-DUP transmission mode field of 11 indicates a non-mixed transmission mode. Bits in the bitmap located outside the bandwidth of the first PPDU are reserved (i.e., the remaining 2 bits are reserved).

[0229] When the bandwidth of the first PPDU is 320MHz, the allowed transmission modes are [0 1 1 1], [1 0 1 1], [1 1 0 1], [1 1 1 0], [0 0 1 1], [0 1 0 1], [0 1 1 0], [1 0 0 1], [1 0 1 0], [1 1 0 0], [1 0 0 0], [0 1 0 0], [0 0 1 0], [0 0 0 1]. The DUP and non-DUP transmission mode fields are 0111, indicating a transmission mode of [0 1 1 1]. The DUP and non-DUP transmission mode fields are 1011, indicating a transmission mode of [1 0 1 1]. The DUP and non-DUP transmission mode fields are 1101, indicating a transmission mode of [1 1 0 1]. The DUP and non-DUP transmission mode fields are 1110, indicating a transmission mode of [1 1 1 0]. The DUP and non-DUP transmission mode fields are 0011, indicating a transmission mode of [0 0 1 1]. The DUP and non-DUP transmission mode fields are 0101, indicating a transmission mode of [0 1 0 1]. The DUP and non-DUP transmission mode fields are 0110, indicating a transmission mode of [0 1 1 0]. The DUP and non-DUP transmission mode fields are 1001, indicating a transmission mode of [1 0 0 1]. The DUP and non-DUP transmission mode fields are 1010, indicating a transmission mode of [1 0 1 0]. The DUP and non-DUP transmission mode fields are 1100, indicating a transmission mode of [1 1 0 0]. The DUP and non-DUP transmission mode fields are 1000, indicating a transmission mode of [1 0 0 0]. A DUP and non-DUP transmission mode field of 0100 indicates a transmission mode of [0 1 0 0]. A DUP and non-DUP transmission mode field of 0010 indicates a transmission mode of [0 0 1 0]. A DUP and non-DUP transmission mode field of 0001 indicates a transmission mode of [0 0 0 1]. A DUP and non-DUP transmission mode field of 10 indicates a transmission mode of [1 0]. A DUP and non-DUP transmission mode field of 0000 indicates a non-mixed transmission mode; or, a DUP and non-DUP transmission mode field of 1111 indicates a non-mixed transmission mode.

[0230] Option 3

[0231] Scheme 3 is for cases where 80MHz and 160MHz frequency domain sub-blocks are allowed. The values ​​of the DUP and non-DUP transmission mode fields indicate: whether the first PPDU is transmitted in a mixed manner of DUP and non-DUP (i.e., the first indication information), and the transmission mode of the first PPDU (i.e., the second indication information).

[0232] Table 6 provides examples of the values ​​and meanings of the DUP and non-DUP transport mode fields.

[0233] Table 6

[0234] It should be noted that Table 6 is merely an example. Some of the contents of Table 6 can be implemented independently. The values ​​and descriptions of the DUP and non-DUP transmission mode fields in Table 6 can be adjusted, and this application does not limit this.

[0235] Option 4

[0236] Scheme 4 is for cases where 80MHz and 160MHz frequency domain sub-blocks are allowed. The DUP and non-DUP transmission mode fields indicate: whether the first PPDU is transmitted in a mixed manner of DUP and non-DUP (i.e., the first indication information), the bit map (i.e., the second indication information), and the third indication information.

[0237] Figure 12C is an example of the format of the DUP and non-DUP transport mode fields provided by Scheme 4.

[0238] In Figure 12C, B0 (referred to as the DUP granularity field) carries the third indication information. A value of 0 for B0 indicates a granularity of 80MHz frequency domain sub-blocks, and a value of 1 for B0 indicates a granularity of 160MHz frequency domain sub-blocks. Alternatively, a value of 1 for B0 indicates a granularity of 80MHz frequency domain sub-blocks, and a value of 0 for B0 indicates a granularity of 160MHz frequency domain sub-blocks.

[0239] In Figure 12C, B1-B4 (referred to as the bitmap field) carry the bitmap and the first indication information.

[0240] When B0 indicates an 80MHz frequency domain sub-block, the lowest-numbered bit among B1-B4 corresponds to the lowest-frequency 80MHz frequency domain sub-block within the bandwidth of the first PPDU. Each consecutive bit in the bit diagram corresponds to the next higher-frequency 80MHz frequency domain sub-block. 0 indicates that the corresponding 80MHz frequency domain sub-block uses DUP transmission, and 1 indicates that the corresponding 80MHz frequency domain sub-block uses non-DUP transmission. Alternatively, 1 indicates that the corresponding 80MHz frequency domain sub-block uses DUP transmission, and 0 indicates that the corresponding 80MHz frequency domain sub-block uses non-DUP transmission. Bits in the bit diagram that are outside the bandwidth of the first PPDU are reserved.

[0241] When B0 indicates a granularity of 160MHz frequency domain sub-block, the lowest-numbered bit in B1-B2 corresponds to the lowest-frequency 160MHz frequency domain sub-block within the bandwidth of the first PPDU. Each consecutive bit in the bit diagram corresponds to the next higher-frequency 160MHz frequency domain sub-block. 0 indicates that the corresponding 160MHz frequency domain sub-block uses DUP transmission, and 1 indicates that the corresponding 160MHz frequency domain sub-block uses non-DUP transmission. Alternatively, 1 indicates that the corresponding 160MHz frequency domain sub-block uses DUP transmission, and 0 indicates that the corresponding 160MHz frequency domain sub-block uses non-DUP transmission. Bits in the bit diagram that are outside the bandwidth of the first PPDU are reserved.

[0242] The following example illustrates how setting B0 to a value of 0 indicates a granularity of 80MHz, and setting B0 to a value of 1 indicates a granularity of 160MHz.

[0243] When the bandwidth of the first PPDU is 160MHz, the allowed transmission modes are [0 1], [1 0]. For example, a DUP and non-DUP transmission mode field of 0 00 indicates a non-mixed transmission mode. Alternatively, a DUP and non-DUP transmission mode field of 0 11 indicates a non-mixed transmission mode. Another example is a DUP and non-DUP transmission mode field of 0 01 indicating a transmission mode of [0 1]. Yet another example is a DUP and non-DUP transmission mode field of 0 10 indicating a transmission mode of [1 0]. Bits in the bitmap that are outside the bandwidth of the first PPDU are reserved.

[0244] When the bandwidth of the first PPDU is 320MHz, for an 80MHz frequency domain sub-block, the allowed transmission modes are [0 1 1 1], [1 0 1 1], [1 1 0 1], [1 1 1 0], [0 0 1 1], [0 1 0 1], [0 1 1 0], [1 0 0 1], [1 0 1 0], [1 1 0 0], [1 0 0 0], [0 1 0 0], [0 0 1 0], [0 0 0 1]. The DUP and non-DUP transmission mode fields are 0 0111, indicating that the transmission mode is [0 1 1 1]. The DUP and non-DUP transmission mode fields are 0 1011, indicating a transmission mode of [1 0 1 1]. The DUP and non-DUP transmission mode fields are 0 1101, indicating a transmission mode of [1 1 0 1]. The DUP and non-DUP transmission mode fields are 0 1110, indicating a transmission mode of [1 1 1 0]. The DUP and non-DUP transmission mode fields are 0 0011, indicating a transmission mode of [0 0 1 1]. The DUP and non-DUP transmission mode fields are 0 0101, indicating a transmission mode of [0 1 0 1]. The DUP and non-DUP transmission mode fields are 0 0110, indicating a transmission mode of [0 1 1 0]. The DUP and non-DUP transmission mode fields are 0 1001, indicating a transmission mode of [1 0 0 1]. A DUP and non-DUP transmission mode field value of 0 1010 indicates a transmission mode of [1 0 1 0]. A DUP and non-DUP transmission mode field value of 0 1100 indicates a transmission mode of [1 1 0 0]. A DUP and non-DUP transmission mode field value of 0 1000 indicates a transmission mode of [1 0 0 0]. A DUP and non-DUP transmission mode field value of 0 0100 indicates a transmission mode of [0 1 0 0]. A DUP and non-DUP transmission mode field value of 0 0010 indicates a transmission mode of [0 0 1 0]. A DUP and non-DUP transmission mode field value of 0 0001 indicates a transmission mode of [0 0 0 1]. A DUP and non-DUP transmission mode field value of 10 indicates a transmission mode of [1 0]. A DUP and non-DUP transmission mode field of 0000 indicates non-mixed transmission; or, a DUP and non-DUP transmission mode field of 1111 indicates non-mixed transmission.

[0245] When the bandwidth of the first PPDU is 320MHz, the allowed transmission modes for the 160MHz frequency domain sub-block are [0 1] and [1 0]. For example, a DUP and non-DUP transmission mode field of 1 00 indicates a non-mixed transmission mode. Alternatively, a DUP and non-DUP transmission mode field of 1 11 indicates a non-mixed transmission mode. Another example is a DUP and non-DUP transmission mode field of 1 01 indicating a transmission mode of [0 1]. Yet another example is a DUP and non-DUP transmission mode field of 1 10 indicating a transmission mode of [1 0]. Bits in the bitmap that are outside the bandwidth of the first PPDU are reserved.

[0246] In some embodiments, the first information is carried in the U-SIG field and / or the UHR-SIG field of the first PPDU. For example, the first information may be carried in one or more bits (e.g., 4 or 5 bits) located in B20-B25 of the U-SIG field. Alternatively, the first information may be carried in B13-B16 of the common field in the UHR-SIG field.

[0247] Figure 13 is a schematic structural diagram of a communication device 1300 provided in an embodiment of this application. The communication device 1300 can be a first device. The communication device 1300 includes a transmitting unit 1310.

[0248] The transmitting unit 1310 is used to transmit a first PPDU; wherein the first PPDU is transmitted in a mixed manner of DUP mode and non-DUP mode.

[0249] In this embodiment, the communication device 1300 can be used to execute some or all of the method steps executed by the first device in the above method embodiments. The communication device 1300 includes units or modules for executing the aforementioned method steps. The method flow has been described in detail in the foregoing embodiments. The modules in this embodiment have the same function or perform the same steps, and will not be described again here. However, those skilled in the art should know that the textual descriptions corresponding to the foregoing method embodiments can be incorporated into this embodiment and correspond to the modules in the communication device 1300.

[0250] In an optional embodiment, the transmitting unit 1310 may be a transceiver 1530. The communication device 1300 may also include a processor 1510 and a memory 1520, as shown in FIG15.

[0251] Figure 14 is a schematic structural diagram of a communication device 1400 provided in an embodiment of this application. The communication device 1400 can be a second device. The communication device 1400 includes a receiving unit 1410.

[0252] The transmitting unit 1410 is used to receive a first PPDU; wherein the first PPDU is transmitted in a mixed manner of DUP mode and non-DUP mode.

[0253] In this embodiment, the communication device 1400 can be used to execute some or all of the method steps executed by the second device in the above method embodiments. The communication device 1400 includes units or modules for executing the aforementioned method steps. The method flow has been described in detail in the foregoing embodiments. The modules in this embodiment have the same function or perform the same steps, and will not be described again here. However, those skilled in the art should know that the textual descriptions corresponding to the foregoing method embodiments can be incorporated into this embodiment, corresponding to the modules in the communication device 1400.

[0254] In an optional embodiment, the receiving unit 1410 may be a transceiver 1530. The communication device 1400 may also include a processor 1510 and a memory 1520, as shown in FIG15.

[0255] Figure 15 is a schematic structural diagram of a communication apparatus according to an embodiment of this application. The dashed lines in Figure 15 indicate that the unit or module is optional. The apparatus 1500 can be used to implement the methods described in the above method embodiments. The apparatus 1500 can be a chip or a communication device.

[0256] Apparatus 1500 may include one or more processors 1510. The processor 1510 may support apparatus 1500 in implementing the methods described in the preceding method embodiments. The processor 1510 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0257] The apparatus 1500 may further include one or more memories 1520. The memories 1520 store a program that can be executed by the processor 1510, causing the processor 1510 to perform the methods described in the preceding method embodiments. The memories 1520 may be independent of the processor 1510 or integrated into the processor 1510.

[0258] The device 1500 may also include a transceiver 1530. The processor 1510 can communicate with other devices or chips via the transceiver 1530. For example, the processor 1510 can send and receive data with other devices or chips via the transceiver 1530.

[0259] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to the communication device provided in this application, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0260] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the communication device provided in this application embodiment, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0261] This application also provides a computer program. This computer program can be applied to the communication device provided in this application, and the computer program causes the computer to execute the methods performed by the communication device in various embodiments of this application.

[0262] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0263] In the embodiments of this application, a "field" may also be referred to as a "domain", "subfield", or "subfield". A field may occupy one or more bytes (byte / octet), or a field may occupy one or more bits (bit).

[0264] Unless otherwise stated, this application does not restrict the position of each field, that is, the position of each field can be adjusted.

[0265] The field names defined in the embodiments of this application are merely examples, and the field may have other names.

[0266] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0267] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0268] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0269] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including AP and STA). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0270] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0271] In the embodiments of this application, "comprising" can refer to direct inclusion or indirect inclusion. Optionally, "comprising" mentioned in the embodiments of this application can be replaced with "indicating" or "used to determine". For example, "A includes B" can be replaced with "A indicates B" or "A is used to determine B".

[0272] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0273] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the WiFi protocol and related protocols applied to future WiFi communication systems, and this application does not limit it.

[0274] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0275] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0276] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0277] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program 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 website, computer, server, or data center 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 that a computer can read 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., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0278] 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 wireless communication method, characterized in that, include: The first device sends the first physical layer protocol data unit (PPDU); The first PPDU is transmitted in a mixed manner of copying DUP and non-copying non-DUP.

2. The method according to claim 1, characterized in that, The bandwidth of the first PPDU includes at least a first frequency domain sub-block and a second frequency domain sub-block. The first PPDU is transmitted in the first frequency domain sub-block via DUP mode, and the first PPDU is transmitted in the second frequency domain sub-block via non-DUP mode.

3. The method according to claim 2, characterized in that, The first frequency domain sub-block is 80MHz or 160MHz.

4. The method according to claim 2 or 3, characterized in that, The first frequency domain sub-block includes a first conventional resource unit (RRU) and one or more second RRUs, wherein the data carried on the second RRU is a copy of the data carried on the first RRU.

5. The method according to claim 4, characterized in that, The first RRU and the second RRU are of the same size.

6. The method according to claim 4 or 5, characterized in that, One or more sub-channels in the first frequency domain sub-block are punctured, and the second RRU belongs to the bandwidth of the first PPDU that is not punctured.

7. The method according to claim 6, characterized in that, The first frequency domain sub-block is 80MHz, the bandwidth of the punched sub-channel is 20MHz, and both the first RRU and the second RRU are 242-channel RRUs.

8. The method according to claim 7, characterized in that, If one subchannel in the first frequency domain subblock is punctured, the bandwidth of the unpunctured first PPDU includes the first RRU and two second RRUs; In the case where two sub-channels in the first frequency domain sub-block are punctured, the bandwidth of the unpunctured first PPDU includes the first RRU and one second RRU.

9. The method according to claim 6, characterized in that, The first frequency domain sub-block is 160MHz, one sub-channel in the first frequency domain sub-block is punctured, the bandwidth of the punctured sub-channel is 20MHz, and both the first RRU and the second RRU are 484+242 conventional multi-resource units (RMRUs).

10. The method according to claim 9, characterized in that, The bandwidth of the first PPDU that is not punched includes the first RRU, one second RRU, and 20 MHz of unused bandwidth.

11. The method according to claim 6, characterized in that, The first frequency domain sub-block is 160MHz, and two sub-channels in the first frequency domain sub-block are punctured. The bandwidth of the punctured sub-channels is 20MHz. Both the first RRU and the second RRU are 484-channel RRUs.

12. The method according to claim 11, characterized in that, The bandwidth of the first PPDU that is not punched includes the first RRU and two second RRUs.

13. The method according to any one of claims 4-12, characterized in that, The first RRU is the RRU with the smallest RRU index in the first frequency domain sub-block.

14. The method according to any one of claims 1-13, characterized in that, Also includes: The first device sends first information, which is related to the transmission method of the first PPDU.

15. The method according to claim 14, characterized in that, The first information includes: first indication information, which is used to indicate whether the first PPDU is transmitted in a mixed manner of DUP and non-DUP.

16. The method according to claim 14 or 15, characterized in that, The first information includes: second indication information, which indicates one or more of the following: The position of the frequency domain sub-block transmitted via DUP within the bandwidth of the first PPDU; The position of the frequency domain sub-block transmitted in non-DUP mode within the bandwidth of the first PPDU.

17. The method according to claim 16, characterized in that, The second indication information is represented by a bitmap, which includes a first bit. The value of the first bit is a first value, indicating that the frequency domain sub-block corresponding to the first bit is transmitted in DUP mode. The value of the first bit is a second value, indicating that the frequency domain sub-block corresponding to the first bit is transmitted in non-DUP mode.

18. The method according to claim 16, characterized in that, The value of the second indication information corresponds one-to-one with the transmission mode of each frequency domain sub-block within the bandwidth of the first PPDU, wherein the transmission mode is DUP mode or non-DUP mode.

19. The method according to any one of claims 14-18, characterized in that, The first information includes: third indication information, which is used to indicate one or more of the following: Bandwidth of frequency domain sub-blocks transmitted via DUP method; The bandwidth of frequency domain sub-blocks transmitted via non-DUP method.

20. The method according to any one of claims 14-19, characterized in that, The first information is carried in the general signal U-SIG field and / or the ultra-high reliability signal UHR-SIG field of the first PPDU.

21. The method according to any one of claims 1-20, characterized in that, The non-DUP method includes one or more of the following: Orthogonal Frequency Division Multiple Access (OFDMA), Non-Orthogonal Frequency Division Multiple Access (non-OFDMA), Single User Multiple Input Multiple Output (SU-MIMO), or Multiple User Multiple Input Multiple Output (MU-MIMO).

22. The method according to any one of claims 1-21, characterized in that, The bandwidth of the first PPDU is 160MHz or 320MHz.

23. A wireless communication method, characterized in that, include: The second device receives the first physical layer protocol data unit (PPDU). The first PPDU is transmitted in a mixed manner of copying DUP and non-copying non-DUP.

24. The method according to claim 23, characterized in that, The bandwidth of the first PPDU includes at least a first frequency domain sub-block and a second frequency domain sub-block. The first PPDU is transmitted in the first frequency domain sub-block via DUP mode, and the first PPDU is transmitted in the second frequency domain sub-block via non-DUP mode.

25. The method according to claim 24, characterized in that, The first frequency domain sub-block is 80MHz or 160MHz.

26. The method according to claim 24 or 25, characterized in that, The first frequency domain sub-block includes a first conventional resource unit (RRU) and one or more second RRUs, wherein the data carried on the second RRU is a copy of the data carried on the first RRU.

27. The method according to claim 26, characterized in that, The first RRU and the second RRU are of the same size.

28. The method according to claim 26 or 27, characterized in that, One or more sub-channels in the first frequency domain sub-block are punctured, and the second RRU belongs to the bandwidth of the first PPDU that is not punctured.

29. The method according to claim 28, characterized in that, The first frequency domain sub-block is 80MHz, the bandwidth of the punched sub-channel is 20MHz, and both the first RRU and the second RRU are 242-channel RRUs.

30. The method according to claim 29, characterized in that, If one subchannel in the first frequency domain subblock is punctured, the bandwidth of the unpunctured first PPDU includes the first RRU and two second RRUs; In the case where two sub-channels in the first frequency domain sub-block are punctured, the bandwidth of the unpunctured first PPDU includes the first RRU and one second RRU.

31. The method according to claim 28, characterized in that, The first frequency domain sub-block is 160MHz, one sub-channel in the first frequency domain sub-block is punctured, the bandwidth of the punctured sub-channel is 20MHz, and both the first RRU and the second RRU are 484+242 conventional multi-resource units (RMRUs).

32. The method according to claim 31, characterized in that, The bandwidth of the first PPDU that is not punched includes the first RRU, one second RRU, and 20 MHz of unused bandwidth.

33. The method according to claim 28, characterized in that, The first frequency domain sub-block is 160MHz, and two sub-channels in the first frequency domain sub-block are punctured. The bandwidth of the punctured sub-channels is 20MHz. Both the first RRU and the second RRU are 484-channel RRUs.

34. The method according to claim 33, characterized in that, The bandwidth of the first PPDU that is not punched includes the first RRU and two second RRUs.

35. The method according to any one of claims 26-34, characterized in that, The first RRU is the RRU with the smallest RRU index in the first frequency domain sub-block.

36. The method according to any one of claims 23-35, characterized in that, Also includes: The second device receives first information, which is related to the transmission method of the first PPDU.

37. The method according to claim 36, characterized in that, The first information includes: first indication information, which is used to indicate whether the first PPDU is transmitted in a mixed manner of DUP and non-DUP.

38. The method according to claim 36 or 37, characterized in that, The first information includes: second indication information, which indicates one or more of the following: The position of the frequency domain sub-block transmitted via DUP within the bandwidth of the first PPDU; The position of the frequency domain sub-block transmitted in non-DUP mode within the bandwidth of the first PPDU.

39. The method according to claim 38, characterized in that, The second indication information is represented by a bitmap, which includes a first bit. The value of the first bit is a first value, indicating that the frequency domain sub-block corresponding to the first bit is transmitted in DUP mode. The value of the first bit is a second value, indicating that the frequency domain sub-block corresponding to the first bit is transmitted in non-DUP mode.

40. The method according to claim 38, characterized in that, The value of the second indication information corresponds one-to-one with the transmission mode of each frequency domain sub-block within the bandwidth of the first PPDU, wherein the transmission mode is DUP mode or non-DUP mode.

41. The method according to any one of claims 36-40, characterized in that, The first information includes: third indication information, which is used to indicate one or more of the following: Bandwidth of frequency domain sub-blocks transmitted via DUP method; The bandwidth of frequency domain sub-blocks transmitted via non-DUP method.

42. The method according to any one of claims 36-41, characterized in that, The first information is carried in the general signal U-SIG field and / or the ultra-high reliability signal UHR-SIG field of the first PPDU.

43. The method according to any one of claims 23-42, characterized in that, The non-DUP method includes one or more of the following: Orthogonal Frequency Division Multiple Access (OFDMA), Non-Orthogonal Frequency Division Multiple Access (non-OFDMA), Single User Multiple Input Multiple Output (SU-MIMO), or Multiple User Multiple Input Multiple Output (MU-MIMO).

44. The method according to any one of claims 23-43, characterized in that, The bandwidth of the first PPDU is 160MHz or 320MHz.

45. A communication device, characterized in that, The communication device is a first device, and the communication device includes: The transmitting unit is used to transmit the first physical layer protocol data unit (PPDU). The first PPDU is transmitted in a mixed manner of copying DUP and non-copying non-DUP.

46. ​​The communication device according to claim 45, characterized in that, The bandwidth of the first PPDU includes at least a first frequency domain sub-block and a second frequency domain sub-block. The first PPDU is transmitted in the first frequency domain sub-block via DUP mode, and the first PPDU is transmitted in the second frequency domain sub-block via non-DUP mode.

47. The communication device according to claim 46, characterized in that, The first frequency domain sub-block is 80MHz or 160MHz.

48. The communication device according to claim 46 or 47, characterized in that, The first frequency domain sub-block includes a first conventional resource unit (RRU) and one or more second RRUs, wherein the data carried on the second RRU is a copy of the data carried on the first RRU.

49. The communication device according to claim 48, characterized in that, The first RRU and the second RRU are of the same size.

50. The communication device according to claim 48 or 49, characterized in that, One or more sub-channels in the first frequency domain sub-block are punctured, and the second RRU belongs to the bandwidth of the first PPDU that is not punctured.

51. The communication device according to claim 50, characterized in that, The first frequency domain sub-block is 80MHz, the bandwidth of the punched sub-channel is 20MHz, and both the first RRU and the second RRU are 242-channel RRUs.

52. The communication device according to claim 51, characterized in that, If one subchannel in the first frequency domain subblock is punctured, the bandwidth of the unpunctured first PPDU includes the first RRU and two second RRUs; In the case where two sub-channels in the first frequency domain sub-block are punctured, the bandwidth of the unpunctured first PPDU includes the first RRU and one second RRU.

53. The communication device according to claim 50, characterized in that, The first frequency domain sub-block is 160MHz, one sub-channel in the first frequency domain sub-block is punctured, the bandwidth of the punctured sub-channel is 20MHz, and both the first RRU and the second RRU are 484+242 conventional multi-resource units (RMRUs).

54. The communication device according to claim 53, characterized in that, The bandwidth of the first PPDU that is not punched includes the first RRU, one second RRU, and 20 MHz of unused bandwidth.

55. The communication device according to claim 50, characterized in that, The first frequency domain sub-block is 160MHz, and two sub-channels in the first frequency domain sub-block are punctured. The bandwidth of the punctured sub-channels is 20MHz. Both the first RRU and the second RRU are 484-channel RRUs.

56. The communication device according to claim 55, characterized in that, The bandwidth of the first PPDU that is not punched includes the first RRU and two second RRUs.

57. The communication device according to any one of claims 48-56, characterized in that, The first RRU is the RRU with the smallest RRU index in the first frequency domain sub-block.

58. The communication device according to any one of claims 45-57, characterized in that, The communication device is also used for: Send first information, which is related to the transmission method of the first PPDU.

59. The communication device according to claim 58, characterized in that, The first information includes: first indication information, which is used to indicate whether the first PPDU is transmitted in a mixed manner of DUP and non-DUP.

60. The communication device according to claim 58 or 59, characterized in that, The first information includes: second indication information, which indicates one or more of the following: The position of the frequency domain sub-block transmitted via DUP within the bandwidth of the first PPDU; The position of the frequency domain sub-block transmitted in non-DUP mode within the bandwidth of the first PPDU.

61. The communication device according to claim 60, characterized in that, The second indication information is represented by a bitmap, which includes a first bit. The value of the first bit is a first value, indicating that the frequency domain sub-block corresponding to the first bit is transmitted in DUP mode. The value of the first bit is a second value, indicating that the frequency domain sub-block corresponding to the first bit is transmitted in non-DUP mode.

62. The communication device according to claim 60, characterized in that, The value of the second indication information corresponds one-to-one with the transmission mode of each frequency domain sub-block within the bandwidth of the first PPDU, wherein the transmission mode is DUP mode or non-DUP mode.

63. The communication device according to any one of claims 58-62, characterized in that, The first information includes: third indication information, which is used to indicate one or more of the following: Bandwidth of frequency domain sub-blocks transmitted via DUP method; The bandwidth of frequency domain sub-blocks transmitted via non-DUP method.

64. The communication device according to any one of claims 58-63, characterized in that, The first information is carried in the general signal U-SIG field and / or the ultra-high reliability signal UHR-SIG field of the first PPDU.

65. The communication device according to any one of claims 45-64, characterized in that, The non-DUP method includes one or more of the following: Orthogonal Frequency Division Multiple Access (OFDMA), Non-Orthogonal Frequency Division Multiple Access (non-OFDMA), Single User Multiple Input Multiple Output (SU-MIMO), or Multiple User Multiple Input Multiple Output (MU-MIMO).

66. The communication device according to any one of claims 45-65, characterized in that, The bandwidth of the first PPDU is 160MHz or 320MHz.

67. A communication device, characterized in that, The communication device is a second device, and the communication device includes: The receiving unit is used to receive the first physical layer protocol data unit (PPDU). The first PPDU is transmitted in a mixed manner of copying DUP and non-copying non-DUP.

68. The communication device according to claim 67, characterized in that, The bandwidth of the first PPDU includes at least a first frequency domain sub-block and a second frequency domain sub-block. The first PPDU is transmitted in the first frequency domain sub-block via DUP mode, and the first PPDU is transmitted in the second frequency domain sub-block via non-DUP mode.

69. The communication device according to claim 68, characterized in that, The first frequency domain sub-block is 80MHz or 160MHz.

70. The communication device according to claim 68 or 69, characterized in that, The first frequency domain sub-block includes a first conventional resource unit (RRU) and one or more second RRUs, wherein the data carried on the second RRU is a copy of the data carried on the first RRU.

71. The communication device according to claim 70, characterized in that, The first RRU and the second RRU are of the same size.

72. The communication device according to claim 70 or 71, characterized in that, One or more sub-channels in the first frequency domain sub-block are punctured, and the second RRU belongs to the bandwidth of the first PPDU that is not punctured.

73. The communication device according to claim 72, characterized in that, The first frequency domain sub-block is 80MHz, the bandwidth of the punched sub-channel is 20MHz, and both the first RRU and the second RRU are 242-channel RRUs.

74. The communication device according to claim 73, characterized in that, If one subchannel in the first frequency domain subblock is punctured, the bandwidth of the unpunctured first PPDU includes the first RRU and two second RRUs; In the case where two sub-channels in the first frequency domain sub-block are punctured, the bandwidth of the unpunctured first PPDU includes the first RRU and one second RRU.

75. The communication device according to claim 72, characterized in that, The first frequency domain sub-block is 160MHz, one sub-channel in the first frequency domain sub-block is punctured, the bandwidth of the punctured sub-channel is 20MHz, and both the first RRU and the second RRU are 484+242 conventional multi-resource units (RMRUs).

76. The communication device according to claim 75, characterized in that, The bandwidth of the first PPDU that is not punched includes the first RRU, one second RRU, and 20 MHz of unused bandwidth.

77. The communication device according to claim 72, characterized in that, The first frequency domain sub-block is 160MHz, and two sub-channels in the first frequency domain sub-block are punctured. The bandwidth of the punctured sub-channels is 20MHz. Both the first RRU and the second RRU are 484-channel RRUs.

78. The communication device according to claim 77, characterized in that, The bandwidth of the first PPDU that is not punched includes the first RRU and two second RRUs.

79. The communication device according to any one of claims 70-78, characterized in that, The first RRU is the RRU with the smallest RRU index in the first frequency domain sub-block.

80. The communication device according to any one of claims 67-79, characterized in that, The communication device is also used for: Receive first information, which is related to the transmission method of the first PPDU.

81. The communication device according to claim 80, characterized in that, The first information includes: first indication information, which is used to indicate whether the first PPDU is transmitted in a mixed manner of DUP and non-DUP.

82. The communication device according to claim 80 or 81, characterized in that, The first information includes: second indication information, which indicates one or more of the following: The position of the frequency domain sub-block transmitted via DUP within the bandwidth of the first PPDU; The position of the frequency domain sub-block transmitted in non-DUP mode within the bandwidth of the first PPDU.

83. The communication device according to claim 82, characterized in that, The second indication information is represented by a bitmap, which includes a first bit. The value of the first bit is a first value, indicating that the frequency domain sub-block corresponding to the first bit is transmitted in DUP mode. The value of the first bit is a second value, indicating that the frequency domain sub-block corresponding to the first bit is transmitted in non-DUP mode.

84. The communication device according to claim 82, characterized in that, The value of the second indication information corresponds one-to-one with the transmission mode of each frequency domain sub-block within the bandwidth of the first PPDU, wherein the transmission mode is DUP mode or non-DUP mode.

85. The communication device according to any one of claims 70-84, characterized in that, The first information includes: third indication information, which is used to indicate one or more of the following: Bandwidth of frequency domain sub-blocks transmitted via DUP method; The bandwidth of frequency domain sub-blocks transmitted via non-DUP method.

86. The communication device according to any one of claims 70-85, characterized in that, The first information is carried in the general signal U-SIG field and / or the ultra-high reliability signal UHR-SIG field of the first PPDU.

87. The communication device according to any one of claims 67-86, characterized in that, The non-DUP method includes one or more of the following: Orthogonal Frequency Division Multiple Access (OFDMA), Non-Orthogonal Frequency Division Multiple Access (non-OFDMA), Single User Multiple Input Multiple Output (SU-MIMO), or Multiple User Multiple Input Multiple Output (MU-MIMO).

88. The communication device according to any one of claims 67-87, characterized in that, The bandwidth of the first PPDU is 160MHz or 320MHz.

89. A communication device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the communication device performs the method as described in any one of claims 1-44.

90. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the device to perform the method as described in any one of claims 1-44.

91. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-44.

92. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1-44.

93. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1-44.

94. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1-44.

Images