Method for indicating uplink bandwidth in physical layer protocol data units and communication devices.

Abstract

The invention relates to a wireless communication field, for example, applicable to a wireless local area network supporting the 802.11be standard, and specifically relates to a method for indicating the uplink bandwidth of a PPDU (physical layer protocol data unit), a communication device, and a computer-readable storage medium. This method comprises the following steps: The AP (access point) creates and sends a trigger frame. This trigger frame carries first-indicator information, which is used directly to indicate either the EHT TB PPDU (extremely high throughput trigger-based physical layer protocol data unit) or the total uplink PPDU bandwidth.The trigger frame carries a second indicator, which is used to indicate the distribution of HE TB PPDU (High Efficient Trigger Based Physical Layer Protocol Data Unit) and / or EHT TB PPDU within the total uplink PPDU transmission bandwidth, or to directly indicate whether the EHT station is transmitting HE TB PPDU or EHT TB PPDU. According to the invention schemes, the trigger frame is capable of triggering the EHT station to perform uplink data transmission over a bandwidth greater than 160 MHz while maintaining trigger frame compatibility.

Description

PPDU uplink bandwidth indication method and related device

[0001] This application claims priority to the Chinese patent application filed with the Patent Office of China on October 28, 2020, with application number 202011174703.8 and application name “PPDU uplink bandwidth indication method and related device”, as well as the priority of the Chinese patent application filed with the Patent Office of China on December 7, 2020, with application number 202011420634.4 and application name “PPDU uplink bandwidth indication method and related device”, and the priority of the Chinese patent application filed with the Patent Office of China on December 14, 2020, with application number 202011469254.X and application name “PPDU uplink bandwidth indication method and related device”; the entire contents of the above patent applications are incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of wireless communication technology, and in particular to a method and related device for indicating uplink bandwidth of a physical layer protocol data unit (PPDU). Background Art

[0003] With the development of mobile Internet and the popularization of smart terminals, data traffic has grown rapidly, and users' demand for communication service quality has become increasingly higher. The Institute of Electrical and Electronics Engineers (IEEE) 802.11ax standard has been unable to meet user needs in terms of high throughput, low jitter, and low latency. Therefore, there is an urgent need to develop the next generation of wireless local area networks (WLAN) technology, namely the IEEE 802.11be standard or the extremely high throughput (EHT) standard or the Wi-Fi 7 standard. Unlike IEEE 802.11ax, IEEE 802.11be will use an ultra-large bandwidth, such as 320MHz, to achieve ultra-high transmission rates and support scenarios with ultra-dense users. In the following text, stations that support the 802.11ax standard but not the 802.11be standard will be referred to as High Efficient (HE) stations, and stations that support the 802.11be standard will be referred to as EHT stations.

[0004] Typically, a station (STA) needs to obtain a transmission opportunity (TXOP) through channel competition before performing uplink data transmission, such as through channel competition based on enhanced distributed channel access (EDCA). IEEE 802.11ax introduces an uplink scheduling transmission method based on trigger frames. The access point (AP) sends a trigger frame to schedule one or more stations for uplink data transmission, such as scheduling a station to send a high-efficiency (HE) physical layer protocol data unit (PPDU). The IEEE 802.11be standard will continue to use the IEEE 802.11ax uplink scheduling transmission method based on trigger frames. Therefore, to maintain compatibility, the trigger frame should be able to trigger HE stations and EHT stations to perform uplink data transmission simultaneously. Because the maximum transmission bandwidth supported by the 802.11ax standard is 160MHz, the bandwidth indicated by the uplink bandwidth field in the trigger frame is also a maximum of 160MHz, while the maximum transmission bandwidth supported by the 802.11be standard is 320MHz. Therefore, in order to achieve wider bandwidth transmission in the 802.11be standard, this trigger frame should be used to trigger EHT stations to perform uplink data transmission on a bandwidth greater than 160MHz.

[0005] Therefore, how to ensure the compatibility of trigger frames and enable EHT triggering stations to transmit uplink data on a bandwidth greater than 160 MHz is an urgent problem to be solved in the industry.

[0006] Summary of the Invention

[0007] The embodiments of the present application provide a PPDU uplink bandwidth indication method and related apparatus, which can reuse 802.11ax trigger frames to trigger EHT sites to perform uplink data transmission on bandwidths greater than 160 MHz. This does not affect HE sites receiving the trigger frames, eliminating the need to redesign new trigger frames to schedule EHT sites for uplink data transmission. This ensures that the trigger frames can trigger EHT sites to perform uplink data transmission on bandwidths greater than 160 MHz while ensuring compatibility. This also reduces complexity and signaling overhead.

[0008] The present application is introduced below from different aspects. It should be understood that the implementation methods and beneficial effects of the following different aspects can be referenced to each other.

[0009] In a first aspect, the present application provides a method for indicating uplink bandwidth of a PPDU, the method comprising: an AP generating and sending a trigger frame, the trigger frame including first indication information, the first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicating a total transmission bandwidth of an uplink physical layer protocol data unit (PPDU). The trigger frame also includes second indication information, the second indication information being used to indicate the distribution of HE TB PPDUs and / or EHT TB PPDUs within the total transmission bandwidth of the uplink PPDU.

[0010] In a second aspect, the present application provides a method for indicating uplink bandwidth of a PPDU, the method comprising: an AP generating and sending a trigger frame, the trigger frame including first indication information, the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicating the total transmission bandwidth of an uplink physical layer protocol data unit (PPDU). The trigger frame also includes second indication information, the second indication information being used to indicate whether a station transmits an HE TB PPDU or an EHT TB PPDU.

[0011] In combination with the first or second aspect, in one possible design, the method also includes: the AP receives the HE TB PPDU or the EHT TB PPDU; wherein the bandwidth field of the general signaling field in the preamble code of the EHT TB PPDU is determined based on one or more of the first indication information, the uplink bandwidth field, and the second indication information.

[0012] In a third aspect, the present application provides a method for indicating uplink bandwidth of a PPDU, the method comprising: a STA receiving and parsing a trigger frame, the trigger frame including first indication information, the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicating the total transmission bandwidth of the uplink PPDU. The trigger frame also includes second indication information, the second indication information being used to indicate the distribution of trigger-based high-efficiency physical layer protocol data units (HE TB PPDUs) and / or very high throughput physical layer protocol data units (EHT TB PPDUs) within the total transmission bandwidth of the uplink PPDU.

[0013] In a fourth aspect, the present application provides a method for indicating uplink bandwidth of a PPDU, the method comprising: a STA receiving and parsing a trigger frame, the trigger frame including first indication information, the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicating the total transmission bandwidth of the uplink PPDU. The trigger frame also includes second indication information, the second indication information being used to indicate whether the station transmits an HE TB PPDU or an EHT TB PPDU.

[0014] In combination with the third or fourth aspect, in one possible design, the method also includes: the STA generates an HE TB PPDU or an EHT TB PPDU, and the bandwidth field of the general signaling field in the preamble code of the EHT TB PPDU is determined based on one or more of the first indication information, the uplink bandwidth field, and the second indication information; and the STA sends the generated HE TB PPDU or the EHT TB PPDU according to the indication of the second indication information.

[0015] In a fifth aspect, the present application provides a communication device, which is an AP or a chip in an AP, such as a Wi-Fi chip. The communication device includes: a processing unit and a transceiver unit.

[0016] In one possible design, the processing unit is used to generate a trigger frame, which includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the total transmission bandwidth of the uplink physical layer protocol data unit PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate the distribution of the trigger-based high-efficiency physical layer protocol data unit HE TB PPDU and / or the extremely high throughput physical layer protocol data unit EHT TB PPDU within the total transmission bandwidth of the uplink PPDU; the transceiver unit is used to send the trigger frame.

[0017] In one possible design, the processing unit is used to generate a trigger frame, which includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the total transmission bandwidth of the uplink physical layer protocol data unit PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate whether the site transmits HE TB PPDU or EHT TB PPDU; the transceiver unit is used to send the trigger frame.

[0018] In any of the above possible designs, the transceiver unit is further configured to receive an HE TB PPDU or an EHT TB PPDU, wherein the bandwidth field of the general signaling field in the preamble of the EHT TB PPDU is determined based on one or more of the first indication information, the uplink bandwidth field, and the second indication information.

[0019] In one possible design, the processing unit is used to generate a trigger frame, which includes first indication information, where the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the bandwidth of an extremely high throughput physical layer data protocol unit EHT TB PPDU, and the uplink bandwidth field indicates the bandwidth of the HE TB PPDU; the trigger frame also includes second indication information, where the second indication information is used to indicate the frequency domain fragmentation of the EHT TB PPDU and / or the frequency domain fragmentation of the HE TB PPDU, the bandwidth of the EHT TB PPDU is the bandwidth jointly indicated by the first indication information and the uplink bandwidth field, and the bandwidth of the HE TB PPDU is the bandwidth of the uplink bandwidth field; the transceiver unit is used to send the trigger frame.

[0020] In one possible design, the processing unit is used to generate a trigger frame, which includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the bandwidth of the EHT TB PPDU, and the uplink bandwidth field indicates the bandwidth of the HE TB PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate whether the site transmits the HE TB PPDU or the EHT TB PPDU; the transceiver unit is used to send the trigger frame.

[0021] Optionally, the above-mentioned transceiver unit is further used to receive HE TB PPDU or EHT TB PPDU; wherein the bandwidth field of the general signaling field in the preamble code of the EHT TB PPDU is set to the value jointly indicated by the first indication information and the uplink bandwidth field.

[0022] In a sixth aspect, the present application provides a communication device, which is a STA or a chip in a STA, such as a Wi-Fi chip. The communication device includes: a transceiver unit and a processing unit.

[0023] In one possible design, the transceiver unit is used to receive a trigger frame, which includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the total transmission bandwidth of the uplink PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate the distribution of the trigger-based high-efficiency physical layer protocol data unit HE TB PPDU and / or the extremely high throughput physical layer protocol data unit EHT TB PPDU within the total transmission bandwidth of the uplink PPDU; the processing unit is used to parse the trigger frame.

[0024] In one possible design, the transceiver unit is used to receive a trigger frame, which includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the total transmission bandwidth of the uplink PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate whether the site transmits HE TB PPDU or EHT TB PPDU; the processing unit is used to parse the trigger frame.

[0025] In any of the above possible designs, the above-mentioned processing unit is also used to generate an HE TB PPDU or an EHT TB PPDU, and the bandwidth field of the general signaling field in the preamble code of the EHT TB PPDU is determined based on one or more of the first indication information, the uplink bandwidth field, and the second indication information; the above-mentioned transceiver unit is also used to send the generated HE TB PPDU or the EHT TB PPDU according to the indication of the second indication information.

[0026] In one possible design, the transceiver unit is used to receive a trigger frame, which includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the bandwidth of the EHT TB PPDU, and the uplink bandwidth field indicates the bandwidth of the HE TB PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate the frequency domain fragmentation of the EHT TB PPDU and / or the frequency domain fragmentation of the HE TB PPDU, the bandwidth of the EHT TB PPDU is the bandwidth jointly indicated by the first indication information and the uplink bandwidth field, and the bandwidth of the HE TB PPDU is the bandwidth of the uplink bandwidth field; the processing unit is used to parse the trigger frame.

[0027] In one possible design, the transceiver unit is used to receive a trigger frame, which includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the bandwidth of the EHT TB PPDU, and the uplink bandwidth field indicates the bandwidth of the HE TB PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate whether the site transmits the HE TB PPDU or the EHT TB PPDU; the processing unit is used to parse the trigger frame.

[0028] Optionally, the above-mentioned processing unit is also used to generate an HE TB PPDU or an EHT TB PPDU, and the bandwidth field of the general signaling field in the preamble code of the EHT TB PPDU is set to the value jointly indicated by the first indication information and the uplink bandwidth field; the above-mentioned transceiver unit is also used to send the generated HE TB PPDU or the EHT TB PPDU according to the indication of the second indication information.

[0029] In a seventh aspect, the present application provides a method for indicating uplink bandwidth of a PPDU, the method comprising: an AP generating and sending a trigger frame, the trigger frame including first indication information, the first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicating the bandwidth of an extremely high throughput physical layer data protocol unit (EHT TB PPDU), the uplink bandwidth field indicating the bandwidth of the HE TB PPDU. The trigger frame also includes second indication information, the second indication information being used to indicate frequency domain fragmentation of the EHT TB PPDU and / or frequency domain fragmentation of the HE TB PPDU, the bandwidth of the EHT TB PPDU being the bandwidth jointly indicated by the first indication information and the uplink bandwidth field, and the bandwidth of the HE TB PPDU being the bandwidth of the uplink bandwidth field.

[0030] In an eighth aspect, the present application provides a method for indicating uplink bandwidth of a PPDU, the method comprising: an AP generating and sending a trigger frame, the trigger frame including first indication information, the first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicating the bandwidth of an extremely high throughput physical layer data protocol unit (EHT TB PPDU), the uplink bandwidth field indicating the bandwidth of the HE TB PPDU. The trigger frame also includes second indication information, the second indication information being used to indicate whether a station transmits an HE TB PPDU or an EHT TB PPDU.

[0031] In combination with the seventh or eighth aspect, in one possible design, the method also includes: the AP receives the HE TB PPDU or the EHT TB PPDU; wherein, the bandwidth field of the general signaling field in the preamble code of the EHT TB PPDU is set to the value jointly indicated by the first indication information and the uplink bandwidth field.

[0032] In a ninth aspect, the present application provides a method for indicating the uplink bandwidth of a PPDU, the method comprising: a STA receives and parses a trigger frame, the trigger frame comprising first indication information, the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicating the bandwidth of the EHT TB PPDU, the uplink bandwidth field indicating the bandwidth of the HE TB PPDU. The trigger frame further comprises second indication information, the second indication information being used to indicate the frequency domain fragmentation of the EHT TB PPDU and / or the frequency domain fragmentation of the HE TB PPDU, the bandwidth of the EHT TB PPDU being the bandwidth jointly indicated by the first indication information and the uplink bandwidth field, and the bandwidth of the HE TB PPDU being the bandwidth of the uplink bandwidth field.

[0033] In a tenth aspect, the present application provides a method for indicating uplink bandwidth of a PPDU, the method comprising: a STA receiving and parsing a trigger frame, the trigger frame including first indication information, the first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicating the bandwidth of an EHT TB PPDU, the uplink bandwidth field indicating the bandwidth of an HE TB PPDU. The trigger frame also includes second indication information, the second indication information being used to indicate whether the station transmits an HE TB PPDU or an EHT TB PPDU.

[0034] In combination with the ninth or tenth aspect, in one possible design, the method further includes: the STA generates an HE TB PPDU or an EHT TB PPDU, and the bandwidth field of the general signaling field in the preamble code of the EHT TB PPDU is set to the value jointly indicated by the first indication information and the uplink bandwidth field; the STA sends the generated HE TB PPDU or the EHT TB PPDU according to the indication of the second indication information.

[0035] In an eleventh aspect, the present application provides a communication device, specifically an AP, comprising a processor and a transceiver. The processor and the transceiver are configured to execute the method described in the first aspect, the second aspect, the seventh aspect, or the eighth aspect.

[0036] In a twelfth aspect, the present application provides a communication device, specifically a STA, comprising a processor and a transceiver. The processor and the transceiver are configured to execute the method described in the third aspect, the fourth aspect, the ninth aspect, or the tenth aspect.

[0037] In a thirteenth aspect, the present application provides a communication device, which may be in the form of a chip product, and the structure of the communication device includes an input / output interface and a processing circuit. The input / output interface and the processing circuit are used to perform the method described in any one of the first to fourth aspects, or any one of the seventh to tenth aspects.

[0038] In the fourteenth aspect, the present application provides a computer-readable storage medium, which stores program instructions. When the program instructions are run on a computer, the computer executes the method described in any one of the above-mentioned aspects from the first to the fourth, or any one of the above-mentioned aspects from the seventh to the tenth.

[0039] In the fifteenth aspect, the present application provides a computer program product comprising program instructions, which, when executed on a computer, enables the computer to execute the method described in any one of the first to fourth aspects above, or any one of the seventh to tenth aspects above.

[0040] By implementing the embodiments of the present application, on the one hand, 802.11ax trigger frames can be reused to trigger EHT sites to perform uplink data transmission on bandwidths greater than 160 MHz. Thus, while ensuring compatibility of the trigger frames, the trigger frames are capable of triggering EHT sites to perform uplink data transmission on bandwidths greater than 160 MHz. Furthermore, this does not affect HE sites receiving the trigger frames, eliminating the need to redesign new trigger frames to schedule EHT sites for uplink data transmission, thereby reducing complexity and signaling overhead. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments.

[0042] FIG1 is a schematic diagram of the architecture of a wireless communication system provided in an embodiment of the present application;

[0043] FIG2a is a schematic structural diagram of an access point provided in an embodiment of the present application;

[0044] FIG2 b is a schematic diagram of the structure of a site provided in an embodiment of the present application;

[0045] FIG3 is a schematic diagram of the division of frequency domain slices in a 320 MHz channel provided in an embodiment of the present application;

[0046] FIG4 is a schematic flowchart of an uplink scheduling transmission method based on a trigger frame in the 802.11ax standard;

[0047] FIG5a is a schematic diagram of the frame format of a trigger frame in the 802.11ax standard;

[0048] FIG5 b is a schematic diagram of the frame format of the common information field and the user information field in the trigger frame of the 802.11ax standard;

[0049] FIG6 is a schematic flowchart of a method for indicating uplink bandwidth of a PPDU provided in an embodiment of the present application;

[0050] FIG7 is a schematic diagram of a frame structure of a first user information field provided in an embodiment of the present application;

[0051] FIG8 is a schematic diagram of the structure of an uplink multi-user PPDU provided in an embodiment of the present application;

[0052] FIG9 is a schematic diagram of the division of 320MHz channels in the 6GHz frequency band;

[0053] FIG10 a is a timing diagram of the AP triggering the station to perform uplink data transmission in Example 1.1;

[0054] FIG10 b is a timing diagram of the AP triggering the station to perform uplink data transmission in Example 1.2;

[0055] FIG10c is a timing diagram of the AP triggering the station to perform uplink data transmission in Example 1.3;

[0056] FIG10 d is a timing diagram of the AP triggering the station to transmit uplink data in Example 1.4;

[0057] FIG10e is a timing diagram of the AP triggering the station to perform uplink data transmission in Example 1.5;

[0058] FIG11 is a timing diagram of the AP triggering the station to transmit uplink data in Example 2.5;

[0059] FIG12 is a schematic structural diagram of a communication device 1 provided in an embodiment of the present application;

[0060] FIG13 is a schematic structural diagram of the communication device 2 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application.

[0062] To facilitate understanding of the method provided in the embodiments of the present application, the system architecture and / or application scenarios of the method provided in the embodiments of the present application are described below. It is understood that the system architecture and / or scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions provided in the embodiments of the present application.

[0063] The present invention provides a method for indicating the uplink bandwidth of a PPDU. This method can reuse an 802.11ax trigger frame to trigger an EHT station to perform uplink data transmission on a bandwidth greater than 160 MHz without affecting the reception of the trigger frame by the HE station. This method eliminates the need to redesign a new trigger frame to schedule the EHT station to perform uplink data transmission. This method enables the trigger frame to trigger the EHT station to perform uplink data transmission on a bandwidth greater than 160 MHz while ensuring compatibility with the trigger frame. This method also reduces complexity and signaling overhead. The method for indicating the uplink bandwidth of a PPDU can be applied to a wireless communication system, such as a wireless local area network system. The method for indicating the uplink bandwidth of a PPDU can be implemented by a communication device in the wireless communication system or a chip or processor in the communication device. The communication device can be an access point device or a station device; the communication device can also be a wireless communication device that supports parallel transmission of multiple links, for example, a multi-link device (MLD) or a multi-band device. Compared to communication devices that only support single-link transmission, multi-link devices have higher transmission efficiency and greater throughput.

[0064] The uplink bandwidth indication method of the PPDU provided in the embodiment of the present application can be applied to the scenario of communication between an AP and one or more STAs, and can also be applied to the communication scenario between APs and APs, and is also applicable to the communication scenario between STAs and STAs. The following takes the communication scenario between APs and STAs as an example, referring to Figure 1, which is a schematic diagram of the architecture of the wireless communication system provided in the embodiment of the present application. As shown in Figure 1, the wireless communication system may include one or more APs (such as AP1 or AP2 in Figure 1) and one or more STAs (such as STA1, STA2 or STA3 in Figure 1). Among them, the AP and STA support the WLAN communication protocol, which may include IEEE 802.11be (or Wi-Fi 7, EHT protocol), and may also include IEEE 802.11ax, IEEE 802.11ac and other protocols. Of course, with the continuous evolution and development of communication technology, the communication protocol may also include the next generation protocol of IEEE 802.11be, etc. Taking WLAN as an example, the device implementing the method of the present application may be an AP or STA in the WLAN, or a chip or processing system installed in the AP or STA.

[0065] An access point (such as AP1 or AP2 in FIG1 ) is a device with wireless communication capabilities that supports communication using the WLAN protocol and has the capability to communicate with other devices in the WLAN network (such as stations or other access points). Of course, it can also have the capability to communicate with other devices. In a WLAN system, an access point can be referred to as an access point station (AP STA). The device with wireless communication capabilities can be a complete device, or a chip or processing system installed in the complete device. The device installed with these chips or processing systems can implement the methods and functions of the embodiments of the present application under the control of the chip or processing system. The AP in the embodiments of the present application is a device that provides services for STAs and can support the 802.11 series of protocols. For example, the AP can be a communication entity such as a communication server, router, switch, or bridge; 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 and processing system in these various forms of devices, thereby implementing the methods and functions of the embodiments of the present application.

[0066] A station (e.g., STA1, STA2, or STA3 in FIG1 ) is a device with wireless communication capabilities that supports communication using the WLAN protocol and has the ability to communicate with other stations or access points in the WLAN network. In a WLAN system, a station can be referred to as a non-access point station (non-AP STA). For example, a STA is any user communication device that allows a user to communicate with an AP and, in turn, with a WLAN. The device with wireless communication capabilities can be a complete device, or a chip or processing system installed in the complete device. Devices installed with these chips or processing systems can implement the methods and functions of the embodiments of the present application under the control of the chip or processing system. For example, a STA can be a user device that can be connected to the Internet, such as a tablet computer, desktop, laptop, notebook computer, ultra-mobile personal computer (UMPC), handheld computer, netbook, personal digital assistant (PDA), mobile phone, or an IoT node in the Internet of Things, or an in-vehicle communication device or entertainment device, gaming device or system, or global positioning system device in the Internet of Vehicles. A STA can also be the chip and processing system in these terminals.

[0067] WLAN systems provide high-speed, low-latency transmission. As WLAN application scenarios continue to evolve, they will be applied to a wider range of scenarios and industries, including the Internet of Things (IoT), the Internet of Vehicles (IoV), the banking industry, corporate offices, stadiums and exhibition halls, concert halls, hotel rooms, dormitories, hospital wards, classrooms, supermarkets, plazas, streets, production workshops, and warehouses. Devices supporting WLAN communication (such as access points or stations) can include sensor nodes in smart cities (such as smart water meters, smart electricity meters, and smart air quality monitoring nodes), smart devices in smart homes (such as smart cameras, projectors, displays, TVs, speakers, refrigerators, and washing machines), nodes in the Internet of Things (IoT), entertainment terminals (such as wearable devices like AR and VR), smart devices in smart offices (such as printers, projectors, speakers, and audio systems), IoV devices, infrastructure in everyday life (such as vending machines, self-service kiosks in supermarkets, self-service checkout machines, and self-service ordering kiosks), and equipment in large sports and music venues. The specific forms of STA and AP are not limited in the embodiments of the present application and are only provided for illustrative purposes.

[0068] Optionally, refer to Figure 2a, which is a structural diagram of an access point provided in an embodiment of the present application. Among them, the AP can be multi-antenna or single-antenna. In Figure 2a, the AP includes a physical layer (PHY) processing circuit and a medium access control (MAC) processing circuit. The physical layer processing circuit can be used to process physical layer signals, and the MAC layer processing circuit can be used to process MAC layer signals. The 802.11 standard focuses on the PHY and MAC parts. Refer to Figure 2b, which is a structural diagram of a site provided in an embodiment of the present application. Figure 2b shows a structural diagram of a STA with a single antenna. In actual scenarios, the STA can also be multi-antenna and can be a device with more than two antennas. In Figure 2b, the STA can include a PHY processing circuit and a MAC processing circuit. The physical layer processing circuit can be used to process physical layer signals, and the MAC layer processing circuit can be used to process MAC layer signals.

[0069] The above content briefly describes the system architecture of the embodiment of the present application. In order to better understand the technical solution of the embodiment of the present application, several contents related to the embodiment of the present application will be introduced below.

[0070] 1. Frequency Segment

[0071] In WLANs, channels are typically divided into primary and secondary channels. A secondary channel can contain one or more subchannels. If 20 MHz is used as the base bandwidth unit, a 320 MHz channel can be divided into 16 subchannels, numbered from channel 1 to channel 16, with each subchannel representing a 20 MHz channel.

[0072] In WLAN, a continuous spectrum block used for transmission can be called a frequency domain segment. A WLAN channel can include multiple frequency domain slices, where the bandwidth of each frequency domain slice can be 80MHz, 40MHz, 20MHz or 160MHz. Referring to Figure 3, Figure 3 is a schematic diagram of the division of frequency domain slices in a 320MHz channel provided in an embodiment of the present application. As shown in Figure 3, taking the bandwidth of the frequency domain slice as 80MHz as an example, the 320MHz channel shown in Figure 3 can be divided into 4 frequency domain slices. Frequency domain slices can also be called frequency segments, or simply slices or segments.

[0073] 2. Uplink Scheduling Transmission Method Based on Trigger Frames in the IEEE 802.11ax Standard

[0074] Referring to Figure 4, which is a schematic flow chart of an uplink scheduling transmission method based on a trigger frame in the 802.11ax standard, as shown in Figure 4, the uplink scheduling transmission method based on a trigger frame specifically includes:

[0075] (1) The AP sends a trigger frame, which is used to schedule one or more STAs to send an uplink triggered HE PPDU (commonly known as a data packet or data group). The triggered HE PPDU can be abbreviated as HE TB PPDU (High Efficient Trigger Based Physical layer Protocol Data Unit). The trigger frame contains resource scheduling information and other parameters for one or more stations to send uplink sub-PPDUs.

[0076] (2) After receiving the trigger frame, the STA parses the user information field that matches its own association identification (AID) from the trigger frame, and then sends the HE TB PPDU on the RU indicated by the resource unit allocation subfield in the user information field. If the station does not receive the user information field that matches its own AID, but receives the AID for random competition, the station can still perform orthogonal frequency division multiple access (OFDMA) random competition on the resource block indicated by the corresponding user information field and transmit the uplink TB PPDU. There are two types of AIDs used for random competition: one is the AID used for random competition of associated stations, such as "0", and the other is the AID used for random competition of unassociated stations, such as "2045".

[0077] Optionally, the meaning and function of each field that may be included in the HE TB PPDU can be referred to as shown in Table 1 below.

[0078] Table 1

[0079]

[0080] (3) The AP receives an uplink multi-user PPDU, which includes uplink sub-PPDUs sent by one or more stations. Then, the AP replies with an acknowledgment frame. The acknowledgment frame sent to one or more stations can be sent in the form of downlink orthogonal frequency division multiple access (OFDMA) or in the form of non-high throughput (non-HT) copy transmission. The acknowledgment frame includes an Ack frame and a Block Ack frame, wherein the Block Ack frame includes a compressed Block Ack frame and a Multi-STA Block Ack frame. The Ack frame and the Block Ack frame are acknowledgments of information sent to one station, and the Multi-STA Block Ack is an acknowledgment of information sent to one or more stations.

[0081] Figure 5a illustrates the trigger frame format in the 802.11ax standard. As shown in Figure 5a, the trigger frame includes a common information field and a user information list field. The common information field contains common information that all STAs need to read, and the user information list field includes one or more user information fields, each of which contains information that a single STA needs to read.

[0082] See Figure 5b, which illustrates the common information field and user information field in the 802.11ax trigger frame format. As shown in Figure 5b, in the user information field, the association identification 12 (AID12) indicates the association identifier of a particular STA, while the resource unit (RU) allocation subfield indicates the specific resource unit location allocated to the STA (indicated by AID12).

[0083] Based on FIG5 b , some fields in the common information field of the trigger frame are briefly introduced below.

[0084] 1. Trigger frame type field in the public information field

[0085] The trigger frame type field occupies 4 bits and is used to indicate the type of the trigger frame. The corresponding relationship between the value of the trigger frame type field and the type of the trigger frame can be referred to in Table 2 below.

[0086] Table 2

[0087]

[0088]

[0089] 2. Uplink bandwidth field in the public information field

[0090] The Uplink Bandwidth field occupies 2 bits and is used to indicate the bandwidth in the HE-SIG-A of the HE TB PPDU. The Uplink Bandwidth field value is 0, indicating that the bandwidth in the HE-SIG-A is 20 MHz; the Uplink Bandwidth field value is 1, indicating that the bandwidth in the HE-SIG-A is 40 MHz; the Uplink Bandwidth field value is 2, indicating that the bandwidth in the HE-SIG-A is 80 MHz; and the Uplink Bandwidth field value is 3, indicating that the bandwidth in the HE-SIG-A is 160 MHz.

[0091] 3. Number of HE-LTF symbols and midamble period field in the common information field, as well as the Doppler field

[0092] The HE-LTF symbol number and midamble period fields occupy 3 bits. The Doppler field occupies 1 bit. The HE-LTF symbol number and midamble period fields must be used in conjunction with the Doppler field.

[0093] Specifically, when the value of the Doppler field is 0, the 3 bits in the HE-LTF Symbol Number and Intermediate Code Period field are used to indicate the number of HE-LTF symbols. The value of the HE-LTF Symbol Number and Intermediate Code Period field is 0, indicating that the number of HE-LTF symbols is 1; the value of the HE-LTF Symbol Number and Intermediate Code Period field is 1, indicating that the number of HE-LTF symbols is 2; the value of the HE-LTF Symbol Number and Intermediate Code Period field is 2, indicating that the number of HE-LTF symbols is 4; the value of the HE-LTF Symbol Number and Intermediate Code Period field is 3, indicating that the number of HE-LTF symbols is 6; the value of the HE-LTF Symbol Number and Intermediate Code Period field is 4, indicating that the number of HE-LTF symbols is 8; other values ​​of the HE-LTF Symbol Number and Intermediate Code Period field are reserved.

[0094] When the value of the Doppler subfield is 1, the first two bits of the HE-LTF Symbol Number and Intermediate Code Period field are used to indicate the number of HE-LTF symbols, and the third bit of the HE-LTF Symbol Number and Intermediate Code Period field is used to indicate the intermediary code period. When the value of the first two bits is 0, it indicates that the number of HE-LTF symbols is 1; when the value of the first two bits is 1, it indicates that the number of HE-LTF symbols is 2; when the value of the first two bits is 2, it indicates that the number of HE-LTF symbols is 4; the value of the first two bits is 3, which is a reserved value. The value of the third bit in the HE-LTF Symbol Number and Intermediate Code Period field is 0, indicating that the intermediary code period is 10 symbols; the value of the third bit is 1, indicating that the intermediary code period is 20 symbols.

[0095] The above is an introduction to some fields in the common information field of the trigger frame under the 802.11ax standard. Based on Figure 5b, the following briefly introduces some fields in the user information field of the trigger frame.

[0096] 1. AID12 field in the user information field

[0097] The AID12 field occupies 12 bits. Its value and meaning are shown in Table 3 below.

[0098] Table 3

[0099]

[0100]

[0101] Specifically, in the 802.11ax standard, if the AID12 field value of a User Information field is 0 or 2045, the User Information field is used to allocate one or more consecutive random access RUs to the managed station. If the AID12 field value of a User Information field is any value between 1 and 2007, the User Information field carries information that the station whose AID matches the AID12 field value needs to read. If the AID12 field value of a User Information field is 2046, the User Information field indicates an unallocated RU. If the AID12 field value of a User Information field is 4095, the User Information field is used as a padding field. Furthermore, in the 802.11ax standard, AID12 field values ​​2008-2044 and 2047-4094 are reserved and undefined.

[0102] 2. Resource unit allocation field in the user information field

[0103] In the 802.11ax standard, the resource unit allocation field can be combined with the uplink bandwidth field in the common information field to indicate the size and location of the allocated RU.

[0104] It is understandable that since the uplink bandwidth field in the above-mentioned common information field occupies 2 bits and indicates a maximum bandwidth of 160MHz, that is, the 802.11ax trigger frame can trigger a station to perform uplink data transmission on a bandwidth of up to 160MHz at most; while the maximum transmission bandwidth supported by the 802.11be standard is 320MHz. Therefore, in order to support the 320MHz bandwidth of the 802.11be standard, an embodiment of the present application provides an uplink bandwidth indication method for PPDU, which can reuse the 802.11ax trigger frame to trigger the EHT station to perform uplink data transmission on a bandwidth greater than 160MHz, without affecting the HE station's reception of the trigger frame, and without redesigning a new trigger frame to schedule the EHT station to perform uplink data transmission. Therefore, under the premise of ensuring the compatibility of the trigger frame, the trigger frame can be enabled to trigger the EHT station to perform uplink data transmission on a bandwidth greater than 160MHz, and can also reduce complexity and save signaling overhead.

[0105] The technical solution provided by this application will be described in detail below with reference to more drawings.

[0106] It is understandable that the AP and STA in this application can be either single-link devices or a functional entity or functional unit in a multi-link device. For example, the AP in this application is an AP in an AP multi-link device, and the STA is a STA in a site multi-link device. This application does not limit this.

[0107] It is understandable that the following description uses an AP and one or more STAs as an example to illustrate the uplink bandwidth indication method of the PPDU provided in the embodiment of the present application. The AP supports the IEEE 802.11be protocol (or Wi-Fi 7, EHT protocol) and may also support other WLAN communication protocols, such as IEEE 802.11ax, IEEE 802.11ac and other protocols. At least one of the one or more STAs supports the IEEE 802.11be protocol. It should be understood that the AP and STA in the embodiment of the present application may also support the next generation protocol of IEEE 802.11be. That is, the uplink bandwidth indication method of the PPDU provided in the embodiment of the present application is not only applicable to the IEEE 802.11be protocol, but also to the next generation protocol of IEEE802.11be.

[0108] It should be understood that the STA in the embodiments of the present application can be either a HE site or an EHT site. HE sites can only transmit HE TB PPDUs, while EHT sites can transmit both HE TB PPDUs and triggered EHT PPDUs. The triggered HE PPDU can be abbreviated as EHT TB PPDU (extremely high throughput Trigger Based Physical layer Protocol Data Unit).

[0109] Refer to Figure 6, which is a schematic flow chart of a method for indicating uplink bandwidth of a PPDU provided in an embodiment of the present application. As shown in Figure 6, the method for indicating uplink bandwidth of a PPDU includes but is not limited to the following steps:

[0110] S101: An AP generates a trigger frame, where the trigger frame includes first indication information. The first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicate a bandwidth of an extremely high throughput physical layer data protocol unit (EHT TB PPDU) or a total transmission bandwidth of an uplink PPDU.

[0111] The frame format of the trigger frame may refer to that shown in FIG5a, including a common information field and a user information list field. The frame format of the common information field may refer to the common information field portion shown in FIG5b, including an uplink bandwidth field for indicating the bandwidth in the HE-SIG-A of the HE TB PPDU. The trigger frame may include first indication information. The first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the bandwidth of the EHT TB PPDU, or the total transmission bandwidth of the uplink PPDU. It should be understood that the total transmission bandwidth of the uplink PPDU is the sum of the bandwidth of the uplink HE TB PPDU and the bandwidth of the uplink EHT TB PPDU.

[0112] Optionally, the first indication information may also be directly used to indicate the total transmission bandwidth of the uplink PPDU or the bandwidth of the EHT TB PPDU, without the need for a joint uplink bandwidth field indication.

[0113] Optionally, the trigger frame also includes second indication information, where the second indication information is used to indicate the distribution of the triggered high-efficiency physical layer protocol data unit HE TB PPDU and / or EHT TB PPDU within the total transmission bandwidth of the above-mentioned uplink PPDU (the distribution here refers to the bandwidth size and frequency domain slicing). Alternatively, the second indication information is used to indicate whether the site transmits the HE TB PPDU or the EHT TB PPDU.

[0114] Optionally, the trigger frame further includes second indication information, where the second indication information is used to indicate whether the EHT site transmits the HE TB PPDU or the EHT TB PPDU.

[0115] Optionally, the trigger frame further includes second indication information, where the second indication information is used to indicate frequency domain segmentation of the EHT TB PPDU and / or frequency domain segmentation of the HE TB PPDU.

[0116] The trigger frame can be used to schedule one or more EHT sites for uplink multi-user transmission. It can also schedule HE sites and EHT sites for simultaneous uplink multi-user transmission, supporting mixed uplink multi-user transmission. It should be understood that HE sites can only transmit HE TB PPDUs, while EHT sites can transmit both HE TB PPDUs and EHT TB PPDUs.

[0117] It should be understood that the HE / EHT short training field, HE / EHT long training field, and data field in the PPDU are transmitted on the resource block. The resource block indication information is located in the user information field that matches the site AID. The same is true below and will not be repeated.

[0118] If the trigger frame includes one or more HE site user information fields, the trigger frame transmitted in the non-HT copy on the primary 80 MHz or primary 160 MHz cannot be punctured. That is, the non-HT trigger frame needs to be transmitted on every 20 MHz on the primary 80 MHz or primary 160 MHz.

[0119] S102: The AP sends the trigger frame, and the STA receives the trigger frame accordingly.

[0120] S103: The STA parses the trigger frame.

[0121] Optionally, in S104, the STA generates an HE TB PPDU or an EHT TB PPDU, where the bandwidth field of the general signaling field in the preamble of the EHT TB PPDU is determined based on one or more of the first indication information, the uplink bandwidth field, and the second indication information. Alternatively, the bandwidth field of the general signaling field in the preamble of the EHT TB PPDU is set to a value jointly indicated by the first indication information and the uplink bandwidth field.

[0122] Optionally, in S105, the STA sends the generated HE TB PPDU or the EHT TB PPDU according to the instruction of the second indication information. Correspondingly, the AP receives the HE TB PPDU or the EHT TB PPDU.

[0123] It can be seen that the embodiment of the present application carries first indication information in the trigger frame of 802.11ax, which is used to directly indicate or jointly indicate the bandwidth of the EHT TB PPDU or the total transmission bandwidth of the uplink PPDU; and carries second indication information, which is used to indicate the distribution of the HE TB PPDU and / or the EHT TB PPDU within the total transmission bandwidth of the uplink PPDU, or to indicate the frequency domain fragmentation of the EHT TB PPDU and / or the frequency domain fragmentation of the HE TB PPDU, or to directly indicate whether the EHT site transmits the HE TB PPDU or the EHT TB PPDU; so that the EHT site sets the bandwidth field of the communication signaling field in the EHT TB PPDU based on one or more of the first indication information, the uplink bandwidth field, and the second indication information, and then transmits the EHT TB PPDU according to the indication of the second indication information. On the one hand, 802.11ax trigger frames can be reused to trigger EHT sites to perform uplink data transmission on bandwidths greater than 160 MHz. This allows trigger frames to trigger EHT sites to perform uplink data transmission on bandwidths greater than 160 MHz while ensuring compatibility. On the other hand, this does not affect HE sites receiving the trigger frames, eliminating the need to redesign new trigger frames to schedule EHT sites for uplink data transmission, thereby reducing complexity and signaling overhead.

[0124] The implementation of the first indication information and the second indication information will be described in detail below.

[0125] Optionally, the first indication information may be located in an unused bit (or reserved bit) of the common information field of the trigger frame, or in a special user information field (denoted as the first user information field) of the trigger frame. The value of the association identifier AID12 field in the first user information field is a preset value, which may be a currently unused AID, i.e., any one of 2008 to 2044 or 2046 to 4095. For example, the value of AID12 in the first user information field is 2044, indicating that the first user information field carries part of the common information of the trigger frame.

[0126] This first indication information may be referred to as an uplink bandwidth extension field, or may have other names, such as a bandwidth indication field, which is not limited in this embodiment of the present application. The uplink bandwidth extension field and the uplink bandwidth field jointly indicate the total transmission bandwidth of the uplink PPDU or the bandwidth of the EHT TB PPDU. In other words, this embodiment of the present application extends the 802.11ax trigger frame by adding an uplink bandwidth extension field to the 802.11ax trigger frame. This field can be placed in unused bits in the common information portion of the trigger frame or in a special user information field.

[0127] The first indication information may be called the uplink PPDU total bandwidth field, or may have other names, which are not limited in the embodiments of the present application. The uplink PPDU total bandwidth field is directly used to indicate the total transmission bandwidth of the uplink PPDU.

[0128] The first indication information may be called an uplink EHT TB PPDU bandwidth field, or may have other names, which are not limited in the embodiments of the present application. The uplink EHT TB PPDU bandwidth field is directly used to indicate the bandwidth of the EHT TB PPDU.

[0129] Optionally, the second indication information may be located in a reserved bit of the common information field of the trigger frame, or in a special user information field (referred to as the first user information field), or in the second user information field of the trigger frame. The AID12 field in the second user information field is used to indicate the association identifier of a certain STA, and its value is any value from 1 to 2007. The second indication information may be referred to as an EHT / HE indication field, or may have other names, such as a PPDU type indication field, which is not limited in this embodiment of the present application.

[0130] If the second indication information is used to indicate the distribution of HE TB PPDU and / or EHT TB PPDU within the total transmission bandwidth of the uplink PPDU, the second indication information can be located in the reserved bits of the common information field of the trigger frame, or in the first user information field. In other words, the embodiment of the present application adds an EHT / HE indication field to a special user information field of the 802.11ax trigger frame to indicate whether the EHT site transmits HE TB PPDU or EHT TB PPDU on one or more frequency domain slices in the uplink bandwidth. Among them, the "uplink bandwidth" mentioned in the embodiment of the present application is the total transmission bandwidth of the uplink PPDU, and the two can be used interchangeably.

[0131] If the second indication information is used to indicate the frequency domain segmentation of the EHT TB PPDU and / or the frequency domain segmentation of the HE TB PPDU, the second indication information may be located in a reserved bit of the common information field of the trigger frame, or in the first user information field.

[0132] If the second indication information is used to indicate whether the EHT site transmits an HE TB PPDU or an EHT TB PPDU, the second indication information may be located in the second user information field. In other words, this embodiment of the present application adds one bit to the user information field of the trigger frame to indicate whether the EHT site transmits an HE TB PPDU or an EHT TB PPDU.

[0133] For example, see Figure 7, which is a schematic diagram of the frame structure of the first user information field provided in an embodiment of the present application. Figure 7 shows that the first user information field carries the first indication information and the second indication information. As shown in Figure 7, the first user information field includes an AID12 field, an uplink bandwidth extension field, an EHT / HE indication field, etc. The AID12 field takes a value from 2008 to 2044, or any one of 2046 to 4095, such as 2044. In Figure 7, the AID12 field occupies 12 bits, the uplink bandwidth extension field occupies 2 bits or 3 bits, and the EHT / HE indication field occupies x bits, where the value of x can be 1, 2, or 4.

[0134] It should be understood that the HE station can only correctly decode the uplink bandwidth field, but will not decode the uplink bandwidth extension field.

[0135] The specific implementations of the first indication information and the second indication information are described in detail below. For ease of understanding, the implementation of the second indication information is first introduced, followed by the implementation of the first indication information.

[0136] 1. Second instruction information

[0137] Method a: The second indication information is located in the first user information field or in the reserved bits of the common information field of the trigger frame. The EHT / HE indication field is used to indicate whether the EHT station transmits a HE TB PPDU or an EHT TB PPDU on one or more frequency domain slices within the total transmission bandwidth of the uplink PPDU.

[0138] Implementation method a-1: If only the primary 160 MHz channel is used for mixed transmission of HE TB PPDUs and EHT TB PPDUs, and the bandwidth granularity (frequency domain slicing) for uplink sub-PPDU transmission is 80 MHz, the EHT / HE indication field may occupy two bits, with the first bit corresponding to the first 80 MHz channel and the second bit corresponding to the second 80 MHz channel. The value of the first bit is used to indicate whether the first 80 MHz channel within the primary 160 MHz channel transmits the HE TB PPDU or the EHT TB PPDU. The value of the second bit is used to indicate whether the second 80 MHz channel within the primary 160 MHz channel transmits the HE TB PPDU or the EHT TB PPDU.

[0139] Exemplarily, when the value of the first bit is 0, it indicates that the first 80 MHz channel transmits HE TB PPDU; when the value of the first bit is 1, it indicates that the first 80 MHz channel transmits EHT TB PPDU.

[0140] Alternatively, when the value of the first bit is 0, it indicates that the first 80 MHz channel transmits the EHT TB PPDU; when the value of the first bit is 1, it indicates that the first 80 MHz channel transmits the HE TB PPDU.

[0141] The first 80 MHz channel and the second 80 MHz channel may adopt one of the following designs, which are applicable to all embodiments of the present application:

[0142] In design 1, the first 80 MHz channel is the master 80 MHz channel, and the second 80 MHz channel is the slave 80 MHz channel.

[0143] In Design 2, the first 80 MHz channel is a slave 80 MHz channel, and the second 80 MHz channel is a master 80 MHz channel.

[0144] In Design 3, the first 80 MHz channel is the first 80 MHz channel in the order from low frequency to high frequency within the 160 MHz bandwidth, and the second 80 MHz channel is the second 80 MHz channel in the order from low frequency to high frequency within the 160 MHz bandwidth.

[0145] In Design 4, the first 80 MHz channel is the first 80 MHz channel in the order from high frequency to low frequency within the 160 MHz bandwidth, and the second 80 MHz channel is the second 80 MHz channel in the order from high frequency to low frequency within the 160 MHz bandwidth.

[0146] For example, FIG8 is used as an example. FIG8 is a schematic diagram of the structure of an uplink multi-user PPDU provided in an embodiment of the present application. Assuming that the bit value is 0, it indicates the transmission of an HE TB PPDU; the bit value is 1, which indicates the transmission of an EHT TB PPDU. Assuming that the first 80 MHz channel and the second 80 MHz channel adopt Design 1, when the value of the EHT / HE indication field is 01, it indicates that the EHT station transmits the HE TB PPDU on the primary 80 MHz channel within the primary 160 MHz, and the EHT station transmits the EHT TB PPDU on the secondary 80 MHz channel within the primary 160 MHz. It is understandable that FIG8 is merely a schematic diagram illustrating a mixed transmission scenario of the uplink multi-user PPDU and the EHT TB PPDU. When the value of the EHT / HE indication field is 00, the EHT station (herein, there can be one or more EHT stations) transmits the HE TB PPDU on both the primary 80 MHz channel and the secondary 80 MHz channel within the primary 160 MHz. When the EHT / HE indication field value is 11, the EHT station (herein, there can be one or more EHT stations) transmits the EHT TB PPDU on both the primary 80 MHz channel and the secondary 80 MHz channel within the primary 160 MHz. In other words, in this case, the uplink multi-user PPDU consists of multiple sub-PPDUs of the same PPDU type.

[0147] Implementation method a-2: If only the primary 160 MHz channel is used for mixed transmission of HE TB PPDU and EHT TB PPDU, and the bandwidth granularity (frequency domain slicing) of the uplink sub-PPDU transmission is 160 MHz, the EHT / HE indication field can occupy 1 bit, which is used to indicate whether the EHT site transmits HE TB PPDU or EHT TB PPDU in the primary 160 MHz.

[0148] Since the maximum transmission bandwidth supported by the EHT standard is 320 MHz, for the above-mentioned embodiments a-1 and a-2, the EHT station may transmit the EHT TB PPDU on the 160 MHz channel by default.

[0149] Implementation method a-3: If both 320MHz channels can be used to mix HE TB PPDUs and EHT TB PPDUs, and the bandwidth granularity (frequency domain slicing) of the uplink sub-PPDU transmission is 80MHz, the EHT / HE indication field can occupy 4 bits. These 4 bits correspond one-to-one to the 4 80MHz channels under the 320MHz bandwidth. The value of each bit is used to indicate whether the EHT site transmits the HE TB PPDU or the EHT TB PPDU on the 80MHz channel corresponding to the bit. It can be understood that if the uplink bandwidth (i.e., the total transmission bandwidth of the uplink PPDU) is less than 320MHz, the bits corresponding to the 80MHz channels that are not within the uplink bandwidth (i.e., the total transmission bandwidth of the uplink PPDU) can be ignored or not used.

[0150] Implementation method a-4: If both 320MHz channels can be used to mix HE TB PPDUs and EHT TB PPDUs, and the bandwidth granularity (frequency domain slicing) of the uplink sub-PPDU transmission is 160MHz, the EHT / HE indication field can occupy 2 bits. These 2 bits correspond one-to-one to the two 160MHz channels under the 320MHz bandwidth. The value of each bit is used to indicate whether the EHT site transmits the HE TB PPDU or the EHT TB PPDU on the 160MHz channel corresponding to the bit. It can be understood that if the uplink bandwidth (i.e., the total transmission bandwidth of the uplink PPDU) is less than 320MHz, the bits corresponding to the 160MHz channels that are not within the uplink bandwidth (i.e., the total transmission bandwidth of the uplink PPDU) can be ignored or not used.

[0151] Optionally, after the AP sends a trigger frame, the trigger frame may include one or more of the following: a user information field for sending a HE TB PPDU to a HE station, and a user information field for an EHT / HE TB PPDU sent by an EHT station, such as a user information field for scheduling both the HE station and the EHT station. The station responds with an uplink multi-user PPDU, including parameters for the general signaling field of the physical layer preamble of the uplink EHT TB PPDU (such as the EHT TB PPDU portion shown in FIG8 ) obtained from the received trigger frame, such as the bandwidth signaling of the EHT TB PPDU. Furthermore, the general signaling field of the uplink EHT TB PPDU includes fields such as a PHY (physical layer) version identifier, a TXOP (transmit opportunity), a BSS (basic service set) color, a cyclic redundancy check code, and tail bits. The PHY version identifier field in the general signaling field in the physical layer preamble of the uplink EHT TB PPDU (or sub-EHT TB PPDU) sent by the EHT station in response to the trigger frame can be obtained from the EHT / HE indication field in the trigger frame.

[0152] Specifically, for any of the aforementioned embodiments a-1 to a-4, if the EHT / HE Indication field of the trigger frame indicates that one of the frequency segments transmits an HE TB PPDU, the EHT station transmits the HE TB PPDU on that frequency segment, and its physical layer preamble, such as the High Efficiency Signaling field A, does not carry a PHY version identification number, as in 802.11ax. If the EHT / HE Indication field of the trigger frame indicates that one of the frequency segments transmits an EHT TB PPDU, the EHT station transmits the EHT TB PPDU on that frequency segment, carries a PHY version identification number field (e.g., 3 bits), and the PHY version identification number field is set to the value corresponding to the EHT TB PPDU, such as "0."

[0153] For example, in the aforementioned embodiment a-1, an example is provided in conjunction with FIG8 . Assume that the bit value is 0, indicating the transmission of the HE TB PPDU; the bit value is 1, indicating the transmission of the EHT TB PPDU. Assuming that the first 80 MHz channel and the second 80 MHz channel adopt Design 1, when the value of the EHT / HE indication field is 01, it indicates that the EHT station transmits the HE TB PPDU on the primary 80 MHz channel within the primary 160 MHz, and its physical layer preamble does not include the PHY version identification number field; the EHT station transmits the EHT TB PPDU on the secondary 80 MHz channel within the primary 160 MHz, wherein the general signaling field in the physical layer preamble includes the PHY version identification number field, and the value is set to the value "0" corresponding to the EHT TB PPDU.

[0154] For another example, in the aforementioned embodiment a-2, it is assumed that the bit value is 0, indicating the transmission of the HE TB PPDU; and the bit value is 1, indicating the transmission of the EHT TB PPDU. When the value of the EHT / HE indication field is 0, it indicates that the EHT station transmits the HE TB PPDU on the primary 160 MHz channel, and its physical layer preamble does not include the PHY version identification field. When the value of the EHT / HE indication field is 1, it indicates that the EHT station transmits the EHT TB PPDU on the primary 160 MHz channel, wherein the general field in the physical layer preamble includes the PHY version identification field, and the value is set to "0" corresponding to the EHT TB PPDU.

[0155] Method b: The second indication information is located in the common information field of the trigger frame. The EHT / HE indication field is used to indicate whether the EHT station transmits the HE TB PPDU or the EHT TB PPDU on the resource blocks allocated in the total transmission bandwidth of the uplink PPDU.

[0156] Implementation b-1: If only the primary 160 MHz channel is used for mixed transmission of HE TB PPDUs and EHT TB PPDUs, and the bandwidth granularity (frequency domain slicing) for uplink sub-PPDU transmission is 80 MHz, the EHT / HE indication field may occupy two PHY version identification fields. The first PHY version identification field corresponds to the first 80 MHz channel, and the second PHY version identification field corresponds to the second 80 MHz channel. The value of the first PHY version identification field is used to indicate whether the first 80 MHz channel within the primary 160 MHz channel transmits an HE TB PPDU, an EHT TB PPDU, or another next-generation PPDU type. The value of the PHY version identification field is used to indicate whether the second 80 MHz channel within the primary 160 MHz channel transmits an HE TB PPDU, an EHT TB PPDU, or another next-generation PPDU type. Since the next-generation PPDU type is currently undetermined, the corresponding value of this field is reserved.

[0157] The first 80 MHz channel and the second 80 MHz channel can be referred to above and will not be described in detail here.

[0158] Exemplarily, the first PHY version identification number field is 3 bits, with a value of 0 (binary 000), indicating that the first 80MHz channel transmits HE TB PPDU; the first bit has a value of 1 (binary 001), indicating that the first 80MHz channel transmits EHT TB PPDU.

[0159] Alternatively, the value of the first PHY version identification number field is 0, indicating that the first 80 MHz channel transmits the EHT TB PPDU; the value of the first bit is 7, indicating that the first 80 MHz channel transmits the HE TB PPDU.

[0160] For example, referring to Figure 8, assume that the PHY Version Identification Number field value is 0, indicating the transmission of HE TB PPDUs; the PHY Version Identification Number field value is 1, indicating the transmission of EHT TB PPDUs. The EHT / HE Indication field value is 000 001, indicating that the EHT station transmits the HE TB PPDU on the primary 80 MHz channel within the primary 160 MHz, and the EHT station transmits the EHT TB PPDU on the secondary 80 MHz sub-channel within the primary 160 MHz.

[0161] Implementation method b-2: If only the primary 160MHz channel is used for mixed transmission of HE TB PPDU and EHT TB PPDU, and the bandwidth granularity (frequency domain slicing) of the uplink sub-PPDU transmission is 160MHz, then the EHT / HE indication field can occupy one PHY version identification number field, which is used to indicate whether the EHT site transmits HE TB PPDU, EHT TB PPDU or other next-generation type PPDU within the primary 160MHz.

[0162] Since the maximum transmission bandwidth supported by the EHT standard is 320 MHz, for the above-mentioned embodiments a-1 and a-2, the EHT station may transmit the EHT TB PPDU on the 160 MHz channel by default.

[0163] Implementation method b-3: If all 320MHz channels can be used to mix HE TB PPDUs and EHT TB PPDUs, and the bandwidth granularity (frequency domain slicing) of the uplink sub-PPDU transmission is 80MHz, the EHT / HE indication field can occupy four PHY version identification number fields. These four PHY version identification number fields correspond one-to-one to the four 80MHz channels under the 320MHz bandwidth. The value of each PHY version identification number field is used to indicate whether the EHT site transmits the HE TB PPDU on the 80MHz channel corresponding to the PHY version identification number field, and whether the EHT TB PPDU is a next-generation type PPDU. It can be understood that if the uplink bandwidth is less than 320MHz, the PHY version identification number field corresponding to the 80MHz channel that is not within the uplink bandwidth can be ignored / omitted or unused.

[0164] Implementation method b-4: If all 320MHz channels can be used to transmit both HE TB PPDU and EHT TB PPDU, and the bandwidth granularity (frequency domain slicing) of the uplink sub-PPDU transmission is 160MHz, the EHT / HE indication field can occupy two PHY version identification number fields. These two PHY version identification number fields correspond one-to-one to the two 160MHz channels under the 320MHz bandwidth. The value of each PHY version identification number field is used to indicate whether the EHT site transmits the HE TB PPDU on the 160MHz channel corresponding to the PHY version identification number field, the EHT TB PPDU, or the next-generation type PPDU. It can be understood that if the uplink bandwidth is less than 320MHz, the PHY version identification number field corresponding to the 160MHz channel that is not within the uplink bandwidth can be ignored / omitted or unused.

[0165] Optionally, if the EHT / HE indication field of the trigger frame carries the PHY version identification number field corresponding to each frequency domain slice, the EHT site transmits the PPDU type indicated by the PHY version identification number field on the frequency domain slice. If the indication is HE TB PPDU, the HE TB PPDU physical layer preamble, such as the efficient signaling field A, is the same as 802.11ax and does not carry the PHY version identification number; if the indication is EHT TB PPDU, the EHT site transmits the HE TB PPDU on the frequency domain slice and directly copies the PHY version identification number field (e.g., 3 bits) corresponding to the frequency domain slice in the trigger frame, such as a value of "0"; if the indication is the next generation PPDU of the EHT TB PPDU, the PHY version identification number field (e.g., 3 bits) corresponding to the frequency domain slice of the trigger frame is directly copied, such as a value of "1".

[0166] Method c: The second indication information is located in the second user information field of the trigger frame. That is, one bit is added to the user information field in the trigger frame to carry the second indication information, which is used to indicate whether the EHT site transmits the HE TB PPDU or the EHT TB PPDU. When the value of the one bit or the EHT / HE indication field is 0, it indicates that the EHT site transmits the HE TB PPDU; when the value of the one bit or the EHT / HE indication field is 1, it indicates that the EHT site transmits the EHT TB PPDU. Alternatively, when the value of the one bit or the EHT / HE indication field is 0, it indicates that the EHT site transmits the EHT TB PPDU; when the value of the one bit or the EHT / HE indication field is 1, it indicates that the EHT site transmits the HE TB PPDU.

[0167] Method d: The second indication information is located in the common information field of the trigger frame. The EHT / HE indication field is used to indicate the mode of the mixed transmission uplink PPDU, where the mixed transmission uplink PPDU refers to the uplink PPDU including the HE TB PPDU and the EHT TB PPDU. This field indirectly informs the EHT station whether to transmit the HE TB PPDU or the EHT TB PPDU. The specific method is the same as before, and it is also determined by the 80MHz resource block in which the station is allocated.

[0168] Specifically, the uplink PPDU mode of mixed transmission includes one or more of the following:

[0169]

[0170]

[0171] The above mode can further consider the frequency bands smaller than 80 MHz being punched, such as 20 MHz, 40 MHz, etc.

[0172] The first 80MHz and the second 80MHz of the second 160MHz are sorted from high to low or from low to high according to the frequency of 160MHz.

[0173] Considering that existing 160MHz 802.11ax or 802.11ac stations may combine the traditional preambles on every 20MHz of 160MHz, such as the L-SIG field, and combine the preambles of duplicate transmissions on every 20MHz of 160MHz, such as the HE-SIG-A field in 802.11ax or the VHT-SIG-A field in 802.11ac, it is proposed that mixed transmission of uplink PPDUs in the main 160MHz transmission is not allowed. Therefore, the mixed transmission uplink PPDU mode includes one or more of the following:

[0174]

[0175] In addition, it is proposed to add one bit to indicate whether it is a mixed transmission uplink PPDU or a non-mixed transmission uplink PPDU, specifically including the following:

[0176] 1. Add 1 bit of signaling to indicate whether the triggered uplink PPDU is mixed transmission or non-mixed transmission, or

[0177] 2. Add a special uplink PPDU mode of mixed transmission, ie, non-mixed transmission, to the above two uplink PPDU mode tables of mixed transmission.

[0178] In addition, the HE station can only send uplink HE TB PPDU after receiving the trigger frame.

[0179] Optionally, in an embodiment of the present application, the user information field in the trigger frame of 802.11ax is referred to as the user information field of HE. Due to the introduction of 320MHz bandwidth (including multiple resource block combinations in resource allocation) and 16 spatial streams in the EHT standard, the resource block (it should be understood that the resource block in this application is the resource unit RU) allocation field and the spatial stream allocation field in the user information field of the trigger frame need to be changed. The changed user information field is referred to as the user information field of EHT. Except for the MU-BAR (multi-user-block ack request) type trigger frame, the trigger frame designed by 802.11be keeps the same length of the user information field as the trigger frame of the same type of 802.11ax.

[0180] For various implementations of the EHT / HE indication field in methods a and b above, the EHT station parses a user information field, i.e., parses according to the EHT user information field. However, the EHT station may still transmit an EHT TB PPDU or HE PPDU on the allocated resource blocks as indicated by the EHT / HE indication field. The allocated resource blocks are indicated by the resource block assignment field in the trigger frame, which may indicate the resource blocks on which the EHT station transmits on the frequency domain slice.

[0181] Alternatively, it can be understood that: for various implementations of the EHT / HE indication field in the above method a and the above method b, the EHT station parses the user information field matching its AID (association identifier), and determines whether to send an EHT TB PPDU or HE TB PPDU by using the 80MHz frequency of the allocated resource block indicated by the resource block allocation field in the user information field. The allocated resource block is indicated by the resource block allocation field in the trigger frame, and combined with the EHT / HE indication field, it can indicate the type of uplink PPDU (EHT TB PPDU or HE TB PPDU) transmitted by the EHT station in the corresponding resource block. Specifically, B0 in the Resource Block Allocation field of the HE User Information field is used to indicate whether the primary 80 MHz or secondary 80 MHz frequency is used. The Reserved (preserved) bit (bit 40) in the HE User Information field is set to 0 by default according to the protocol, which can be understood as indicating the primary 160 MHz frequency (because HE PPDUs are limited to transmission on the primary 160 MHz frequency). The Resource Block Allocation field in the EHT User Information field requires 9 bits, one bit more than the Resource Block Allocation field in the HE User Information field. It is proposed that another bit in the EHT User Information field use the Reserved bit (bit 40) in the HE User Information field, denoted as the BS bit. This bit, set to 0, indicates the primary 160 MHz frequency and to 1, indicates the secondary 160 MHz frequency. The meaning of bit B0 (the first bit in the field) in the Resource Allocation field of the original 8 bits in the HE User Information field is retained, namely, to indicate whether the primary 80 MHz frequency is used or the secondary 80 MHz frequency is used. The additional 7-bit table can be used to add some resource blocks or multiple resource block combinations newly supported by 802.11be. Therefore, the EHT station can determine the 80 MHz (one or more) where the allocated resource blocks are located based on the BS and B0 bits in the HE user information field or the EHT user information field.

[0182] For the implementation of the second indication information in the above method c, the EHT site needs to parse two types of user information fields. If the transmission of HE PPDU is indicated, the EHT site parses according to the user information field of HE and then sends HE PPDU; if the transmission of EHT TB PPDU is indicated, the EHT site parses according to the user information field of EHT; then sends EHT TB PPDU.

[0183] The above describes a specific implementation of the second indication information. The following describes a detailed implementation of the first indication information.

[0184] It should be understood that in the 6GHz band, the 320MHz channel divisions overlap, so it is necessary to distinguish the frequency domain location of 320MHz, that is, to distinguish between 320MHz-1 and 320MHz-2. Figure 9 shows a schematic diagram of the 320MHz channel division in the 6GHz band.

[0185] 802.11be devices may be divided into the first version and the second version. In order to simplify the implementation of the first version site, it is proposed that the first version of the EHT AP does not support the sending of mixed scheduling trigger frames, and the second version of the EHT AP supports the sending of mixed scheduling trigger frames. Therefore

[0186] The present invention proposes third indication information, wherein the third indication information is located in the first user information field or in the reserved bit of the common information field of the trigger frame, and is used to indicate whether the trigger frame is used to trigger an uplink PPDU of hybrid transmission or an uplink PPDU of non-hybrid transmission.

[0187] 2. First Instruction Information

[0188] The following embodiments are all described by taking the frame structure diagram shown in Fig. 7 as an example. That is, the first indication information is located in the first user information field.

[0189] Method 1: The uplink bandwidth extension field is used in the common information field of the joint trigger frame to indicate the total transmission bandwidth of the uplink PPDU. The uplink bandwidth extension field occupies 2 bits.

[0190] Implementation 1.1:

[0191] When the value of the Uplink Bandwidth field is 0, the Uplink Bandwidth Extension field is a reserved field, and the total transmission bandwidth of the uplink PPDU indicated by the joint indication is 20 MHz;

[0192] The above sentence can also be understood as:

[0193] When the value of the Uplink Bandwidth field is 0 and the value of the Uplink Bandwidth Extension field is the 1st (or 5th) value, the total transmission bandwidth of the jointly indicated uplink PPDU is 20 MHz;

[0194] The value of the Uplink Bandwidth field is 0, and the value of the Uplink Bandwidth Extension field is the second (or sixth) value. This value combination is reserved (unused).

[0195] The value of the Uplink Bandwidth field is 0, and the value of the Uplink Bandwidth Extension field is the third (or seventh) value. This value combination is reserved (unused).

[0196] The value of the Uplink Bandwidth field is 0, and the value of the Uplink Bandwidth Extension field is the 4th (or 8th) value. This value combination is reserved (unused).

[0197] Or:

[0198] When the value of the Uplink Bandwidth field is 0 and the value of the Uplink Bandwidth Extension field is the 1st (or 5th) value, the total transmission bandwidth of the jointly indicated uplink PPDU is 20 MHz;

[0199] The value of the Uplink Bandwidth field is 0, the value of the Uplink Bandwidth Extension field is the second (or sixth) value, and the total transmission bandwidth of the uplink PPDU indicated by the combination is 80 MHz;

[0200] The value of the Uplink Bandwidth field is 0, the value of the Uplink Bandwidth Extension field is the third (or seventh) value, and the total transmission bandwidth of the uplink PPDU indicated by the combination is 160 MHz;

[0201] The value of the Uplink Bandwidth field is 0, and the value of the Uplink Bandwidth Extension field is the 4th (or 8th) value. This value combination is reserved (unused).

[0202] Note that mixed uplink transmission of 20MHz uplink HE PPDU and 80MHz uplink PPDU (the 80MHz includes 20MHz uplink HE PPDU) may not be allowed in the protocol, so it can also be

[0203] When the value of the Uplink Bandwidth field is 0 and the value of the Uplink Bandwidth Extension field is the 1st (or 5th) value, the total transmission bandwidth of the jointly indicated uplink PPDU is 20 MHz;

[0204] The value of the Uplink Bandwidth field is 0, the value of the Uplink Bandwidth Extension field is the second (or sixth) value, and the total transmission bandwidth of the uplink PPDU indicated by the combination is 160 MHz;

[0205] The value of the uplink bandwidth field is 0, and the value of the uplink bandwidth extension field is the third (or seventh) value. This value combination is reserved (unused).

[0206] The value of the Uplink Bandwidth field is 0, and the value of the Uplink Bandwidth Extension field is the 4th (or 8th) value. This value combination is reserved (unused).

[0207] When the value of the Uplink Bandwidth field is 1, the Uplink Bandwidth Extension field is a reserved field, and the total transmission bandwidth of the uplink PPDU indicated by the joint indication is 40 MHz;

[0208] The above sentence can also be understood as:

[0209] When the value of the Uplink Bandwidth field is 1 and the value of the Uplink Bandwidth Extension field is the 1st (or 5th) value, the total transmission bandwidth of the jointly indicated uplink PPDU is 40 MHz;

[0210] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the second (or sixth) value. This value combination is reserved (unused).

[0211] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the third (or seventh) value. This value combination is reserved (unused).

[0212] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the 4th (or 8th) value. This value combination is reserved (unused).

[0213] Or:

[0214] When the value of the Uplink Bandwidth field is 1 and the value of the Uplink Bandwidth Extension field is the 1st (or 5th) value, the total transmission bandwidth of the jointly indicated uplink PPDU is 40 MHz;

[0215] The value of the Uplink Bandwidth field is 1, the value of the Uplink Bandwidth Extension field is the second (or sixth) value, and the total transmission bandwidth of the uplink PPDU indicated by the combination is 80 MHz;

[0216] The value of the Uplink Bandwidth field is 1, the value of the Uplink Bandwidth Extension field is the third (or seventh) value, and the total transmission bandwidth of the uplink PPDU indicated by the combination is 160 MHz;

[0217] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the 4th (or 8th) value. This value combination is reserved (unused).

[0218] Note that mixed uplink transmission of 40MHz uplink HE PPDU and 80MHz uplink PPDU (the 80MHz includes the 40MHz uplink HE PPDU) may or may not be allowed in the protocol, so it can also be

[0219] When the value of the Uplink Bandwidth field is 1 and the value of the Uplink Bandwidth Extension field is the 1st (or 5th) value, the total transmission bandwidth of the jointly indicated uplink PPDU is 40 MHz;

[0220] The value of the Uplink Bandwidth field is 1, the value of the Uplink Bandwidth Extension field is the second (or sixth) value, and the total transmission bandwidth of the uplink PPDU indicated by the combination is 160 MHz;

[0221] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the third (or seventh) value. This value combination is reserved (unused).

[0222] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the 4th (or 8th) value. This value combination is reserved (unused).

[0223] When the value of the Uplink Bandwidth field is 2 and the value of the Uplink Bandwidth Extension field is 1, the total transmission bandwidth of the jointly indicated uplink PPDU is 80 MHz;

[0224] When the value of the Uplink Bandwidth field is 2 and the value of the Uplink Bandwidth Extension field is the second value, the total transmission bandwidth of the jointly indicated uplink PPDU is 160 MHz;

[0225] When the value of the Uplink Bandwidth field is 2 and the value of the Uplink Bandwidth Extension field is the third value, the total transmission bandwidth of the jointly indicated uplink PPDU is 320 MHz;

[0226] When the value of the Uplink Bandwidth field is 2 and the value of the Uplink Bandwidth Extension field is the 4th value, the combination is retained;

[0227] When the value of the Uplink Bandwidth field is 3 and the value of the Uplink Bandwidth Extension field is the 5th value, the total transmission bandwidth of the jointly indicated uplink PPDU is 160 MHz;

[0228] When the value of the Uplink Bandwidth field is 3 and the value of the Uplink Bandwidth Extension field is the 6th value, the total transmission bandwidth of the jointly indicated uplink PPDU is 320 MHz;

[0229] When the value of the Uplink Bandwidth field is 3 and the value of the Uplink Bandwidth Extension field is the 7th value, the combination is retained;

[0230] When the value of the uplink bandwidth field is 3 and the value of the uplink bandwidth extension field is the 8th value, the combination is retained.

[0231] The first through fourth values ​​can each be any one of {0, 1, 2, 3}, and the first, second, third, and fourth values ​​are distinct. For example, the first value is 0, the second value is 1, the third value is 2, and the fourth value is 3. Similarly, the fifth through eighth values ​​can each be any one of {0, 1, 2, 3}, and the fifth, sixth, seventh, and eighth values ​​are distinct. For example, the fifth value is 1, the sixth value is 2, the seventh value is 3, and the eighth value is 0.

[0232] Implementation 1.2:

[0233] When the value of the Uplink Bandwidth field is 0, the Uplink Bandwidth Extension field is a reserved field, and the total transmission bandwidth of the uplink PPDU indicated by the joint indication is 20 MHz;

[0234] The above sentence can also be understood as:

[0235] When the value of the Uplink Bandwidth field is 0 and the value of the Uplink Bandwidth Extension field is the 1st (or 5th) value, the total transmission bandwidth of the jointly indicated uplink PPDU is 20 MHz;

[0236] The value of the Uplink Bandwidth field is 0, and the value of the Uplink Bandwidth Extension field is the second (or sixth) value. This value combination is reserved (unused).

[0237] The value of the Uplink Bandwidth field is 0, and the value of the Uplink Bandwidth Extension field is the third (or seventh) value. This value combination is reserved (unused).

[0238] The value of the Uplink Bandwidth field is 0, and the value of the Uplink Bandwidth Extension field is the 4th (or 8th) value. This value combination is reserved (unused).

[0239] Or:

[0240] When the value of the Uplink Bandwidth field is 0 and the value of the Uplink Bandwidth Extension field is the 1st (or 5th) value, the total transmission bandwidth of the jointly indicated uplink PPDU is 20 MHz;

[0241] The value of the Uplink Bandwidth field is 0, the value of the Uplink Bandwidth Extension field is the second (or sixth) value, and the total transmission bandwidth of the uplink PPDU indicated by the combination is 80 MHz;

[0242] The value of the Uplink Bandwidth field is 0, the value of the Uplink Bandwidth Extension field is the third (or seventh) value, and the total transmission bandwidth of the uplink PPDU indicated by the combination is 160 MHz;

[0243] The value of the Uplink Bandwidth field is 0, and the value of the Uplink Bandwidth Extension field is the 4th (or 8th) value. This value combination is reserved (unused).

[0244] Note that mixed uplink transmission of 20MHz uplink HE PPDU and 80MHz uplink PPDU (the 80MHz includes 20MHz uplink HE PPDU) may not be allowed in the protocol, so it can also be

[0245] When the value of the Uplink Bandwidth field is 0 and the value of the Uplink Bandwidth Extension field is the 1st (or 5th) value, the total transmission bandwidth of the jointly indicated EHT TB PPDU is 20 MHz;

[0246] The value of the Uplink Bandwidth field is 0, the value of the Uplink Bandwidth Extension field is the second (or sixth) value, and the total transmission bandwidth of the uplink PPDU indicated by the combination is 160 MHz;

[0247] The value of the Uplink Bandwidth field is 0, and the value of the Uplink Bandwidth Extension field is the third (or seventh) value. This value combination is reserved (unused).

[0248] The value of the Uplink Bandwidth field is 0, and the value of the Uplink Bandwidth Extension field is the 4th (or 8th) value. This value combination is reserved (unused).

[0249] Or:

[0250] When the value of the Uplink Bandwidth field is 1 and the value of the Uplink Bandwidth Extension field is the 1st (or 5th) value, the total transmission bandwidth of the jointly indicated uplink PPDU is 40 MHz;

[0251] The value of the Uplink Bandwidth field is 1, the value of the Uplink Bandwidth Extension field is the second (or sixth) value, and the total transmission bandwidth of the uplink PPDU indicated by the combination is 80 MHz;

[0252] The value of the Uplink Bandwidth field is 1, the value of the Uplink Bandwidth Extension field is the third (or seventh) value, and the total transmission bandwidth of the uplink PPDU indicated by the combination is 160 MHz;

[0253] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the 4th (or 8th) value. This value combination is reserved (unused).

[0254] Note that mixed uplink transmission of 40MHz uplink HE PPDU and 80MHz uplink PPDU (the 80MHz includes the 40MHz uplink HE PPDU) may or may not be allowed in the protocol, so it can also be

[0255] When the value of the Uplink Bandwidth field is 1 and the value of the Uplink Bandwidth Extension field is the 1st (or 5th) value, the total transmission bandwidth of the jointly indicated uplink PPDU is 40 MHz;

[0256] The value of the Uplink Bandwidth field is 1, the value of the Uplink Bandwidth Extension field is the second (or sixth) value, and the total transmission bandwidth of the uplink PPDU indicated by the combination is 160 MHz;

[0257] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the third (or seventh) value. This value combination is reserved (unused).

[0258] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the 4th (or 8th) value. This value combination is reserved (unused).

[0259] When the value of the Uplink Bandwidth field is 1, the Uplink Bandwidth Extension field is a reserved field, and the total transmission bandwidth of the uplink PPDU indicated by the joint indication is 40 MHz;

[0260] The above sentence can also be understood as:

[0261] When the value of the Uplink Bandwidth field is 1 and the value of the Uplink Bandwidth Extension field is the 1st (or 5th) value, the total transmission bandwidth of the jointly indicated uplink PPDU is 40 MHz;

[0262] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the second (or sixth) value. This value combination is reserved (unused).

[0263] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the third (or seventh) value. This value combination is reserved (unused).

[0264] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the 4th (or 8th) value. This value combination is reserved (unused).

[0265] When the value of the Uplink Bandwidth field is 2 and the value of the Uplink Bandwidth Extension field is 1, the total transmission bandwidth of the jointly indicated uplink PPDU is 80 MHz;

[0266] When the value of the Uplink Bandwidth field is 2 and the value of the Uplink Bandwidth Extension field is the second value, the total transmission bandwidth of the jointly indicated uplink PPDU is 160 MHz;

[0267] When the value of the Uplink Bandwidth field is 2 and the value of the Uplink Bandwidth Extension field is the third value, the total transmission bandwidth of the jointly indicated uplink PPDU is 320 MHz - 1;

[0268] When the value of the Uplink Bandwidth field is 2 and the value of the Uplink Bandwidth Extension field is the 4th value, the total transmission bandwidth of the jointly indicated uplink PPDU is 320 MHz - 2;

[0269] When the value of the Uplink Bandwidth field is 3 and the value of the Uplink Bandwidth Extension field is the 5th value, the total transmission bandwidth of the jointly indicated uplink PPDU is 160 MHz;

[0270] When the value of the Uplink Bandwidth field is 3 and the value of the Uplink Bandwidth Extension field is the 6th value, the total transmission bandwidth of the jointly indicated uplink PPDU is 320 MHz - 1;

[0271] When the value of the Uplink Bandwidth field is 3 and the value of the Uplink Bandwidth Extension field is the 7th value, the total transmission bandwidth of the jointly indicated uplink PPDU is 320 MHz - 2;

[0272] When the value of the uplink bandwidth field is 3 and the value of the uplink bandwidth extension field is the 8th value, the combination is retained.

[0273] The first through fourth values ​​can each be any one of {0, 1, 2, 3}, and the first, second, third, and fourth values ​​are distinct. For example, the first value is 0, the second value is 1, the third value is 2, and the fourth value is 3. Similarly, the fifth through eighth values ​​can each be any one of {0, 1, 2, 3}, and the fifth, sixth, seventh, and eighth values ​​are distinct. For example, the fifth value is 1, the sixth value is 2, the seventh value is 3, and the eighth value is 0.

[0274] It can be seen that the difference between the above embodiment 1.1 and the above embodiment 1.2 is that in embodiment 1.2, 320 MHz is divided into 320 MHz-1 and 320 MHz-2 according to different frequency positions.

[0275] Table 4

[0276]

[0277]

[0278] Table 4a

[0279]

[0280] Table 4b

[0281]

[0282]

[0283] It should be understood that although the above-mentioned embodiments 1.1 and 1.2 both involve the 1st to 4th numerical values, and the 5th to 8th numerical values; however, the values ​​of the 1st to 4th numerical values ​​in different embodiments may be different or the same. Similarly, the values ​​of the 5th to 8th numerical values ​​in different embodiments may be different or the same. For example, in embodiments 1.1 and 1.2, the values ​​of the 1st to 4th numerical values ​​are 0, 1, 2, 3, respectively; and the values ​​of the 5th to 8th numerical values ​​are 1, 2, 3, 0, respectively. For another example, in embodiment 1.1, the values ​​of the 1st to 4th numerical values ​​are 0, 1, 2, 3, respectively, and in embodiment 1.2, the values ​​of the 1st to 4th numerical values ​​are 3, 2, 1, 0, respectively; in embodiment 1.1, the values ​​of the 5th to 8th numerical values ​​are 1, 2, 3, 0, respectively, and in embodiment 1.1, the values ​​of the 5th to 8th numerical values ​​are 0, 1, 2, 3, respectively. The same applies to the following and will not be repeated.

[0284] In implementation 1.1, when the total transmission bandwidth of the uplink PPDU is 320 MHz, the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 3 values, respectively, or the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 6 values, respectively. To facilitate implementation at the receiving station or to provide more reserved or unused combination values, two methods are proposed:

[0285] 1. When the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 6 values ​​respectively, the total transmission bandwidth of the uplink PPDU is 320 MHz; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 3 values ​​respectively, this is a reserved combination.

[0286] Alternatively, when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 3 values ​​respectively, the total transmission bandwidth of the uplink PPDU is 320MHz; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 6 values ​​respectively, this is a reserved combination.

[0287] 2. When the uplink bandwidth extension field is set to the third value, the uplink bandwidth field can be set to any value, that is, any one of 0 to 3. At this time, the total transmission bandwidth of the uplink PPDU is 320 MHz.

[0288] In implementation 1.2, when the total transmission bandwidth of the uplink PPDU is 320 MHz - 1, the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 3 values, respectively, or the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 6 values, respectively. To facilitate implementation at the receiving station, two methods are proposed:

[0289] 1. When the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 6 values ​​respectively, the total transmission bandwidth of the uplink PPDU is 320MHz-1; or, when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 3 values ​​respectively, the total transmission bandwidth of the uplink PPDU is 320MHz-1; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 6 values ​​respectively, this is a reserved combination.

[0290] It can also be expressed as:

[0291] When the Uplink Bandwidth field and Uplink Bandwidth Extension field are set to 3 and 6 respectively, the total transmission bandwidth of the uplink PPDU is 320-1MHz; when the Uplink Bandwidth field and Uplink Bandwidth Extension field are set to 2 and 3 respectively, this is a reserved combination.

[0292] Alternatively, when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 3 values ​​respectively, the total transmission bandwidth of the uplink PPDU is 320-1MHz; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 6 values ​​respectively, this is a reserved combination.

[0293] 2. When the Uplink Bandwidth Extension field is set to the 6th value, the Uplink Bandwidth field can be set to any value, that is, any one of 0 to 3. At this time, the total transmission bandwidth of the uplink PPDU is 320-1MHz.

[0294] When the EHT TB PPDU bandwidth is 320MHz-2, the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 4 values, respectively, or the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 7 values, respectively. To facilitate implementation at the receiving station, two methods are proposed:

[0295] 1. When the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and the 7th value respectively, the total transmission bandwidth of the uplink PPDU is 320MHz-2; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and the 4th value respectively, this is a reserved combination.

[0296] Alternatively, when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 4 values ​​respectively, the total transmission bandwidth of the uplink PPDU is 320MHz-2; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 7 values ​​respectively, this is a reserved combination.

[0297] 2. When the Uplink Bandwidth Extension field is set to the 7th value, the Uplink Bandwidth field can be set to any value, that is, any one of 0 to 3. At this time, the total transmission bandwidth of the uplink PPDU is 320MHz-2.

[0298] Implementation 1.3:

[0299] When the value of the Uplink Bandwidth Extension field is 1, the total transmission bandwidth of the uplink PPDU jointly indicated by the Uplink Bandwidth field and the Uplink Bandwidth Extension field is the same as the bandwidth indicated by the Uplink Bandwidth field;

[0300] When the value of the Uplink Bandwidth Extension field is the second value, the total transmission bandwidth of the uplink PPDU jointly indicated by the Uplink Bandwidth field and the Uplink Bandwidth Extension field is 160 MHz;

[0301] When the value of the Uplink Bandwidth Extension field is the third value, the total transmission bandwidth of the uplink PPDU indicated by the Uplink Bandwidth field and the Uplink Bandwidth Extension field is 320 MHz;

[0302] When the value of the uplink bandwidth extension field is the 4th value, the combination is retained.

[0303] The first to fourth values ​​can be any one of {0, 1, 2, 3}, respectively, and the first, second, third, and fourth values ​​are different from each other.

[0304] Implementation 1.4:

[0305] When the value of the Uplink Bandwidth Extension field is 1, the total transmission bandwidth of the uplink PPDU jointly indicated by the Uplink Bandwidth field and the Uplink Bandwidth Extension field is the same as the bandwidth indicated by the Uplink Bandwidth field;

[0306] When the value of the Uplink Bandwidth Extension field is the second value, the total transmission bandwidth of the uplink PPDU jointly indicated by the Uplink Bandwidth field and the Uplink Bandwidth Extension field is 160 MHz;

[0307] When the value of the Uplink Bandwidth Extension field is the third value, the total transmission bandwidth of the uplink PPDU jointly indicated by the Uplink Bandwidth field and the Uplink Bandwidth Extension field is 320 MHz - 1;

[0308] When the value of the uplink bandwidth extension field is the fourth value, the total transmission bandwidth of the uplink PPDU jointly indicated by the uplink bandwidth field and the uplink bandwidth extension field is 320 MHz-2.

[0309] The first to fourth values ​​can be any one of {0, 1, 2, 3}, respectively, and the first, second, third, and fourth values ​​are different from each other.

[0310] It can be seen that the above-mentioned embodiment 1.3 and the above-mentioned embodiment 1.4 can be summarized as shown in the following Table 5.

[0311] Table 5

[0312]

[0313] In various implementations of Method 1 above, if the station transmits an uplink HE TB PPDU, its bandwidth is the value indicated by the uplink bandwidth field. If the station transmits an uplink EHT TB PPDU, its bandwidth is determined based on one or more of the uplink bandwidth field, the uplink bandwidth extension field, and the EHT / HE indication field. For example, the bandwidth may be determined based on the uplink bandwidth field and the uplink bandwidth extension field, or based on the uplink bandwidth extension field, or based on the EHT / HE indication field, or based on the uplink bandwidth field, the uplink bandwidth extension field, and the EHT / HE indication field. For example, when the second indication information described above adopts implementation a-3 of Method a, the bandwidth of the uplink EHT TB PPDU may be determined based solely on the EHT / HE indication field. It is understood that the total transmission bandwidth of the uplink PPDU is the sum of the bandwidth of the uplink HE TB PPDU and the bandwidth of the uplink EHT TB PPDU.

[0314] Optionally, for various implementations of Method 1 above, when the second indication information is implemented using Method C, after receiving the trigger frame, the EHT station may set the bandwidth field of the general signaling field in the preamble of the uplink EHT TB PPDU to the total transmission bandwidth of the uplink PPDU. This is because, in Method C, the EHT / HE indication field is in the User Information field of the trigger frame, and the specific EHT TB PPDU bandwidth cannot be determined based on this field. However, the User Information field of the trigger frame contains the RU Allocation field. When the EHT station transmits the uplink EHT TB PPDU, it transmits the uplink EHT TB PPDU on the corresponding resources according to the indication of the RU Allocation field.

[0315] Optionally, after the station receives the trigger frame, when sending the EHT TB PPDU, the bandwidth of the communication signaling field in the uplink physical layer preamble needs to be determined by one or more of the uplink bandwidth field, the uplink bandwidth extension field, and the EHT / HE indication field, for example, including the following situations: based on the uplink bandwidth field and the uplink bandwidth extension field, or based on the uplink bandwidth extension field, or based on the EHT / HE indication field, or based on the uplink bandwidth field, the uplink bandwidth extension field and the EHT / HE indication field. Optionally, it is also necessary to set the bandwidth value together through fields such as the Channel Width and the Channel Central Frequency Segment (CCFS) in the EHT operation element. The channel width field is used to indicate the bandwidth of the basic service set (BSS) (that is, the maximum bandwidth of the PPDU supported for transmission within the BSS), and one or more CCFS fields are used to indicate the center frequency of the BSS bandwidth, so that the associated station knows whether the 320MHz PPDU transmitted by this BSS is a 320MHz-1PPDU or a 320MHz-2PPDU. Unassociated stations or stations in other basic service sets can learn whether the 320MHz PPDU transmitted by the BSS is a 320MHz-1PPDU or a 320MHz-2PPDU by receiving management frames sent by the AP in the basic service set, such as beacon frames; or by displaying an indication in the trigger frame whether it is 320MHz-1 or 320MHz-2.

[0316] Optionally, in the above-mentioned embodiments 1.1 and 1.3, after the EHT site receives the trigger frame, if the bandwidth of the transmitted uplink EHT TB PPDU is 320 MHz, the 320 MHz bandwidth can be determined based on the channel width field and CCFS field of the EHT operation element, whether it is 320 MHz-1 or 320 MHz-2, and filled in the general signaling field of the preamble code of the uplink EHT TB PPDU.

[0317] Optionally, in the above-mentioned embodiments 1.2 and 1.4, after receiving the trigger frame, if the bandwidth of the transmitted uplink EHT TB PPDU is 320 MHz, the general signaling field of the preamble code of the uplink EHT TB PPDU can be filled in according to 320 MHz-1 or 320 MHz-2 indicated in the trigger frame (specifically, the joint indication of the uplink bandwidth field and the uplink bandwidth extension field of the trigger frame).

[0318] The above is a description of various implementations of Method 1. To facilitate understanding, the implementation of Method 1 will be described below with reference to specific examples. Specifically, the following examples are described using Implementation 1.1 of Method 1 as an example.

[0319] In the following examples, it is assumed that the aforementioned second indication information adopts implementation a-3 of method a, that is, both 320MHz channels can be used for mixed transmission of HE TB PPDUs and EHT TB PPDUs, and the EHT / HE indication field occupies 4 bits. In this case, the unused bits in the 4-bit EHT / HE indication field depend on the total transmission bandwidth of the uplink PPDU. For example, if the total transmission bandwidth of the uplink PPDU is 160MHz, 2 bits of the 4-bit EHT / HE indication field are unused; for another example, if the total transmission bandwidth of the uplink PPDU is 320MHz, 0 bits of the 4-bit EHT / HE indication field are unused. It should be understood that the following examples are also applicable to other implementations of the second indication information.

[0320] It should also be understood that the various implementations of the aforementioned second indication information are also applicable to the various implementations of the aforementioned first indication information.

[0321] For ease of description, the following examples assume that the primary 80 MHz channel is the first 80 MHz channel, the secondary 80 MHz channel is the second 80 MHz channel, and the secondary 160 MHz channels are the third and fourth 80 MHz channels. The first through fourth 80 MHz channels are sorted from highest to lowest, or from lowest to highest. It should be understood that the primary 80 MHz channel can be any 80 MHz channel in the frequency band, the secondary 80 MHz channel is located adjacent to the primary 80 MHz channel, and the secondary 160 MHz channels are continuous.

[0322] Example 1.1:

[0323] The AP sends a trigger frame in which the Uplink Bandwidth field (value 3) indicates 160 MHz, and the Uplink Bandwidth Extension field (value 6) combined with the Uplink Bandwidth field indicate a total uplink PPDU transmission bandwidth of 320 MHz. The EHT / HE Indication field in the trigger frame has a value of 0011 (where 0 indicates transmission of an HE TB PPDU and 1 indicates transmission of an EHT TB PPDU).

[0324] After multiple stations receive the trigger frame, the HE station or EHT station transmits the HE TB PPDU on the first and second 80 MHz channels according to the indication of the EHT / HE indication field, wherein the bandwidth field of the efficient signaling field A in the preamble of the HE TB PPDU is set to 160 MHz indicated by the uplink bandwidth field. The EHT station transmits the EHT TB PPDU on the third and fourth 80 MHz channels according to the uplink bandwidth field, the uplink bandwidth extension field, and the EHT / HE indication field, wherein the bandwidth field of the general signaling field in the preamble of the EHT TB PPDU is set to 160 MHz (this value can be determined based on the uplink bandwidth field and the uplink bandwidth extension field).

[0325] The AP receives an uplink multi-user PPDU, which includes uplink sub-PPDUs sent by one or more stations. The AP then responds with an acknowledgment frame. The acknowledgment frame sent to one or more stations can be sent via downlink OFDMA or non-HT duplicate transmission. See Figure 10a, which is a timing diagram of the AP triggering a station to perform uplink data transmission in Example 1.1. In Figure 10a, the uplink multi-user PPDU includes a HE TB PPDU with a bandwidth of 160 MHz and an EHT TB PPDU with a bandwidth of 160 MHz.

[0326] Example 1.2:

[0327] The AP sends a trigger frame in which the Uplink Bandwidth field (value 2) indicates 80 MHz, and the Uplink Bandwidth Extension field (value 2) combined with the Uplink Bandwidth field indicate a total uplink PPDU transmission bandwidth of 160 MHz. The EHT / HE Indication field in the trigger frame has a value of 0100 (in this case, the last two bits of the EHT / HE Indication field are reserved or unused; 0 indicates transmission of an HE TB PPDU, and 1 indicates transmission of an EHT TB PPDU).

[0328] After multiple stations receive the trigger frame, the HE station or EHT station transmits the HE TB PPDU on the first 80 MHz channel according to the indication of the EHT / HE indication field, wherein the bandwidth field of the efficient signaling field A in the preamble of the HE TB PPDU is set to 80 MHz indicated by the uplink bandwidth field. The EHT station transmits the EHT TB PPDU on the second 80 MHz channel according to the uplink bandwidth field, the uplink bandwidth extension field, and the EHT / HE indication field, wherein the bandwidth field of the general signaling field in the preamble of the EHT TB PPDU is set to 80 MHz (this value can be determined based on the uplink bandwidth field and the uplink bandwidth extension field).

[0329] The AP receives an uplink multi-user PPDU, which includes uplink sub-PPDUs sent by one or more stations. The AP then responds with an acknowledgment frame. The acknowledgment frame sent to one or more stations can be sent via downlink OFDMA or non-HT duplicate transmission. See Figure 10b, which is a timing diagram of the AP triggering a station to perform uplink data transmission in Example 1.2. In Figure 10b, the uplink multi-user PPDU includes an HE TB PPDU with a bandwidth of 80 MHz and an EHT TB PPDU with a bandwidth of 80 MHz.

[0330] Example 1.3:

[0331] The AP sends a trigger frame in which the Uplink Bandwidth field (value set to 2) indicates 80 MHz, and the Uplink Bandwidth Extension field (value set to 1) combined with the Uplink Bandwidth field indicate a total uplink PPDU transmission bandwidth of 80 MHz. The EHT / HE Indication field in the trigger frame has a value of 1000 (in this case, the last three bits of the EHT / HE Indication field are reserved or unused; 0 indicates transmission of an HE TB PPDU, and 1 indicates transmission of an EHT TB PPDU).

[0332] After multiple stations receive the trigger frame, the EHT station transmits the EHT TB PPDU on the first 80 MHz channel based on the uplink bandwidth field, uplink bandwidth extension field, and EHT / HE indication field, where the bandwidth field of the general signaling field in the preamble of the EHT TB PPDU is set to 80 MHz (this value is determined based on the EHT / HE indication field).

[0333] The AP receives an uplink multi-user PPDU, which includes uplink sub-PPDUs sent by one or more stations. The AP then responds with an acknowledgment frame. The acknowledgment frame sent to one or more stations can be sent via downlink OFDMA or non-HT duplicate transmission. See Figure 10c, which illustrates the timing diagram of the AP triggering a station to perform uplink data transmission in Example 1.3. In Figure 10c, the uplink multi-user PPDU includes an EHT TB PPDU with an 80 MHz bandwidth.

[0334] Example 1.4:

[0335] The AP sends a trigger frame in which the Uplink Bandwidth field (value 2) indicates 80 MHz, and the Uplink Bandwidth Extension field (value 3) combined with the Uplink Bandwidth field indicate a total uplink PPDU transmission bandwidth of 320 MHz. The EHT / HE Indication field in the trigger frame has a value of 0111 (where 0 indicates transmission of an HE TB PPDU and 1 indicates transmission of an EHT TB PPDU).

[0336] After multiple stations receive the trigger frame, the HE station or EHT station transmits the HE TB PPDU on the first 80 MHz channel according to the EHT / HE Indicator field. The bandwidth field of the Efficient Signaling Field A in the preamble of the HE TB PPDU is set to 80 MHz, as indicated by the Uplink Bandwidth field. The EHT station transmits the EHT TB PPDU on the second, third, and fourth 80 MHz channels according to the Uplink Bandwidth field, Uplink Bandwidth Extension field, and EHT / HE Indicator field. The bandwidth field of the General Signaling Field in the preamble of the EHT TB PPDU is set to 320 MHz (this value is determined based on the Uplink Bandwidth field). Because the EHT standard does not support bandwidths of 240 MHz, in this case, the bandwidth field of the General Signaling Field in the preamble of the EHT TB PPDU needs to be set to 320 MHz, but the actual transmission bandwidth of the EHT TB PPDU is still 240 MHz.

[0337] The AP receives an uplink multi-user PPDU, which includes uplink sub-PPDUs sent by one or more stations. The AP then responds with an acknowledgment frame. The acknowledgment frame sent to one or more stations can be sent via downlink OFDMA or non-HT duplicate transmission. See Figure 10d, which is a timing diagram of the AP triggering a station to perform uplink data transmission in Example 1.4. In Figure 10d, the uplink multi-user PPDU includes an HE TB PPDU with a bandwidth of 80 MHz and an EHT TB PPDU with an actual transmission bandwidth of 240 MHz.

[0338] Example 1.5:

[0339] The AP sends a trigger frame in which the Uplink Bandwidth field (value 2) indicates 80 MHz, and the Uplink Bandwidth Extension field (value 3) combined with the Uplink Bandwidth field indicates a total uplink PPDU transmission bandwidth of 320 MHz. The EHT / HE Indication field in the trigger frame has a value of 0011 (where 0 indicates transmission of an HE TB PPDU and 1 indicates transmission of an EHT TB PPDU).

[0340] After multiple stations receive the trigger frame, the HE station or EHT station transmits the HE TB PPDU on the first 80 MHz channel according to the EHT / HE Indication field, where the bandwidth field of the Efficient Signaling Field A in the preamble of the HE TB PPDU is set to 80 MHz as indicated by the Uplink Bandwidth field. The EHT station transmits the EHT TB PPDU on the third and fourth 80 MHz channels according to the Uplink Bandwidth field, the Uplink Bandwidth Extension field, and the EHT / HE Indication field, where the bandwidth field of the General Signaling Field in the preamble of the EHT TB PPDU is set to 160 MHz (this value is determined based on the EHT / HE Indication field). It should be understood that the EHT / HE Indication field indicates that the HE TB PPDU is transmitted on the first and second 80 MHz channels, but the bandwidth of the HE TB PPDU indicated by the Uplink Bandwidth field is only 80 MHz. Therefore, the second 80 MHz channel is punctured, and only the first 80 MHz channel can transmit the HE TB PPDU.

[0341] The AP receives an uplink multi-user PPDU, which includes uplink sub-PPDUs sent by one or more stations. The AP then responds with an acknowledgment frame. The acknowledgment frame sent to one or more stations can be sent via downlink OFDMA or non-HT duplicate transmission. See Figure 10e, which is a timing diagram of the AP triggering the station to perform uplink data transmission in Example 1.5. In Figure 10e, the second 80MHz channel is punctured. The uplink multi-user PPDU includes an HE TB PPDU with a bandwidth of 80MHz and an EHT TB PPDU with a bandwidth of 160MHz.

[0342] Method 2: The uplink bandwidth extension field is used in the common information field of the joint trigger frame to indicate the bandwidth of the EHT TB PPDU. In the following embodiments 2.1, 2.2, and 2.3, the uplink bandwidth extension field occupies 2 bits; in the following embodiment 2.4, the uplink bandwidth extension field occupies 3 bits.

[0343] Implementation 2.1:

[0344] When the Uplink Bandwidth field is set to 0, the Uplink Bandwidth Extension field is a reserved field, and the bandwidth of the EHT TB PPDU indicated in the joint field is 20 MHz. In this case, the maximum possible total transmission bandwidth of the uplink PPDU is 20 MHz.

[0345] The above sentence can also be understood as:

[0346] When the value of the Uplink Bandwidth field is 0 and the value of the Uplink Bandwidth Extension field is 1, the total transmission bandwidth of the jointly indicated EHT TB PPDU is 20 MHz;

[0347] The value of the Uplink Bandwidth field is 0, and the value of the Uplink Bandwidth Extension field is the second value. This value combination is reserved (unused);

[0348] The value of the Uplink Bandwidth field is 0, and the value of the Uplink Bandwidth Extension field is the third value. This value combination is reserved (unused);

[0349] The value of the Uplink Bandwidth field is 0, and the value of the Uplink Bandwidth Extension field is the 4th value. This value combination is reserved (unused);

[0350] Or:

[0351] When the value of the Uplink Bandwidth field is 0 and the value of the Uplink Bandwidth Extension field is 1, the transmission bandwidth of the jointly indicated EHT TB PPDU is 20 MHz;

[0352] The uplink bandwidth field is set to 0, the uplink bandwidth extension field is set to the second value, and the transmission bandwidth of the jointly indicated EHT TB PPDU is 80MHz. In this case, this combination can be used to support mixed uplink transmission of a 20MHz uplink HE PPDU and an 80MHz uplink EHT PPDU. For example, the uplink HE PPDU is transmitted on the primary 20MHz band, and the uplink EHT PPDU is transmitted on an 80MHz band within the secondary 160MHz band. Optionally, all frequency bands within the 320MHz band except for the primary 20MHz band and the 80MHz band within the secondary 160MHz band are punctured. This combination can of course still support the transmission of non-A-PPDUs of the corresponding bandwidth, such as the uplink HE PPDU and the uplink EHT PPDU.

[0353] The uplink bandwidth field is set to 0, the uplink bandwidth extension field is set to the third value, and the transmission bandwidth of the jointly indicated EHT TB PPDU is 160 MHz. In this case, this combination can be used to support mixed uplink transmission of 20 MHz uplink HE PPDUs and 160 MHz uplink EHT PPDUs. For example, the uplink HE PPDU is transmitted on the primary 20 MHz, and the uplink EHT PPDU is transmitted on the secondary 160 MHz. Optionally, all frequency bands within the 320 MHz band except the primary 20 MHz and the secondary 160 MHz are punctured. This combination can of course still support the transmission of non-A-PPDUs of the corresponding bandwidth, such as the uplink HE PPDU and the uplink EHT PPDU.

[0354] The value of the Uplink Bandwidth field is 0, and the value of the Uplink Bandwidth Extension field is the 4th value. This value combination is reserved (unused);

[0355] Note: Mixed uplink transmission of 20MHz uplink HE PPDU and 80MHz uplink EHT PPDU may not be allowed in the protocol, so it is also possible to

[0356] When the value of the uplink bandwidth field is 0 and the value of the uplink bandwidth extension field is the first value, the total transmission bandwidth of the jointly indicated EHT TB PPDU is 20 MHz.

[0357] The value of the Uplink Bandwidth field is 0, the value of the Uplink Bandwidth Extension field is the second value, and the transmission bandwidth of the jointly indicated EHT TB PPDU is 160MHz. In this case, this combination can be used to support mixed uplink transmission of 20MHz uplink HE PPDU and 160MHz uplink EHT PPDU. Of course, this combination can still support the transmission of non-A-PPDUs of the corresponding bandwidth, such as uplink HE PPDU and uplink EHT PPDU.

[0358] The value of the uplink bandwidth field is 0, and the value of the uplink bandwidth extension field is the third value. This value combination is reserved (unused).

[0359] The value of the uplink bandwidth field is 0, and the value of the uplink bandwidth extension field is the 4th value. This value combination is reserved (unused).

[0360] When the Uplink Bandwidth field is set to 1, the Uplink Bandwidth Extension field is a reserved field, and the bandwidth of the EHT TB PPDU indicated in the joint statement is 40 MHz. In this case, the maximum possible total transmission bandwidth of the uplink PPDU is 40 MHz.

[0361] The above sentence can also be understood as:

[0362] When the Uplink Bandwidth field is set to 1 and the Uplink Bandwidth Extension field is set to the first value, the bandwidth of the jointly indicated EHT TB PPDU is 40 MHz. In this case, the maximum possible total transmission bandwidth of the uplink PPDU is 40 MHz.

[0363] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the second value. This value combination is reserved (unused).

[0364] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the third value. This value combination is reserved (unused).

[0365] The value of the uplink bandwidth field is 1, the value of the uplink bandwidth extension field is the 4th value, and this value combination is reserved (unused).

[0366] Or:

[0367] When the value of the uplink bandwidth field is 1 and the value of the uplink bandwidth extension field is the first value, the transmission bandwidth of the jointly indicated EHT TB PPDU is 40 MHz.

[0368] The value of the Uplink Bandwidth field is 1, the value of the Uplink Bandwidth Extension field is the second value, and the transmission bandwidth of the jointly indicated EHT TB PPDU is 80MHz. In this case, this combination can be used to support mixed uplink transmission of 40MHz uplink HE PPDU and 80MHz uplink EHT PPDU. Of course, this combination can still support the transmission of non-A-PPDUs of the corresponding bandwidth, such as uplink HE PPDU and uplink EHT PPDU.

[0369] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the third value. The transmission bandwidth of the jointly indicated EHT TB PPDU is 160MHz. In this case, this combination can be used to support mixed uplink transmission of 40MHz uplink HE PPDU and 160MHz uplink EHT PPDU. Of course, this combination can still support the transmission of non-A-PPDUs of the corresponding bandwidth, such as uplink HE PPDU and uplink EHT PPDU.

[0370] The value of the uplink bandwidth field is 1, the value of the uplink bandwidth extension field is the 4th value, and this value combination is reserved (unused).

[0371] Note: Mixed uplink transmission of 40MHz uplink HE PPDU and 80MHz uplink EHT PPDU may or may not be allowed in the protocol, so it is also possible to

[0372] When the value of the uplink bandwidth field is 1 and the value of the uplink bandwidth extension field is the first value, the transmission bandwidth of the jointly indicated EHT TB PPDU is 40 MHz.

[0373] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the second value. The transmission bandwidth of the jointly indicated EHT TB PPDU is 160MHz. In this case, this combination can be used to support mixed uplink transmission of 40MHz uplink HE PPDU and 160MHz uplink EHT PPDU. Of course, this combination can still support the transmission of non-A-PPDUs of the corresponding bandwidth, such as uplink HE PPDU and uplink EHT PPDU.

[0374] The value of the uplink bandwidth field is 1, the value of the uplink bandwidth extension field is the third value, and this value combination is reserved (unused).

[0375] The value of the uplink bandwidth field is 1, the value of the uplink bandwidth extension field is the 4th value, and this value combination is reserved (unused).

[0376] When the Uplink Bandwidth field is set to 2 and the Uplink Bandwidth Extension field is set to 1, the bandwidth of the jointly indicated EHT TB PPDU is 80 MHz. In this case, the maximum possible total transmission bandwidth of the uplink PPDU is 160 MHz (80 MHz + 80 MHz).

[0377] When the Uplink Bandwidth field is set to 2 and the Uplink Bandwidth Extension field is set to the second value, the bandwidth of the jointly indicated EHT TB PPDU is 160 MHz. In this case, the maximum possible total transmission bandwidth of the uplink PPDU is 320 MHz. This is because the EHT standard does not include a 240 MHz bandwidth (80 MHz + 160 MHz). Therefore, the maximum possible total transmission bandwidth of the uplink PPDU of 320 MHz can be considered to be punctured 80 MHz, and its actual transmission bandwidth is 240 MHz.

[0378] When the Uplink Bandwidth field is set to 2 and the Uplink Bandwidth Extension field is set to the third value, the bandwidth of the jointly indicated EHT TB PPDU is 320 MHz. In this case, the maximum possible total transmission bandwidth of the uplink PPDU is 320 MHz. It should be understood that 80 MHz + 320 MHz exceeds 320 MHz, but the maximum possible total transmission bandwidth of the uplink PPDU is still 320 MHz.

[0379] When the value of the uplink bandwidth field is 2 and the value of the uplink bandwidth extension field is the 4th value, the combination is retained.

[0380] When the Uplink Bandwidth field is set to 3 and the Uplink Bandwidth Extension field is set to 1, the bandwidth of the jointly indicated EHT TB PPDU is 80 MHz. In this case, the maximum possible total transmission bandwidth of the uplink PPDU is 320 MHz. This is because the EHT standard does not include a 240 MHz bandwidth (160 MHz + 80 MHz).

[0381] When the Uplink Bandwidth field is set to 3 and the Uplink Bandwidth Extension field is set to 2, the bandwidth of the jointly indicated EHT TB PPDU is 160 MHz. In this case, the maximum possible total transmission bandwidth of the uplink PPDU is 320 MHz (160 MHz + 160 MHz).

[0382] When the Uplink Bandwidth field is set to 3 and the Uplink Bandwidth Extension field is set to the third value, the bandwidth of the jointly indicated EHT TB PPDU is 320 MHz. In this case, the maximum total bandwidth possible for uplink PPDU transmission is 320 MHz. It should be understood that 160 MHz + 320 MHz exceeds 320 MHz, but the maximum total bandwidth possible for uplink PPDU transmission is still 320 MHz.

[0383] When the value of the uplink bandwidth field is 3 and the value of the uplink bandwidth extension field is the 4th value, the combination is retained.

[0384] In this embodiment 2.1, the uplink bandwidth extension field occupies 2 bits and can represent a total of four values, from 0 to 3. The first to fourth values ​​can be any one of {0, 1, 2, 3}, and the first, second, third, and fourth values ​​are different. For example, the first value is 0, the second value is 1, the third value is 2, and the fourth value is 3.

[0385] It can be seen that the main difference between Implementation 2.1 of Method 2 and Implementation 1.1 of the aforementioned Method 1 is that in Implementation 2.1, the bandwidth of the EHT TB PPDU may be smaller than the value indicated by the uplink bandwidth field.

[0386] Implementation 2.2:

[0387] When the Uplink Bandwidth field is set to 0, the Uplink Bandwidth Extension field is a reserved field, and the bandwidth of the EHT TB PPDU indicated in the joint field is 20 MHz. In this case, the maximum possible total transmission bandwidth of the uplink PPDU is 20 MHz.

[0388] The above sentence can also be understood as:

[0389] When the value of the Uplink Bandwidth field is 0 and the value of the Uplink Bandwidth Extension field is 1, the total transmission bandwidth of the jointly indicated EHT TB PPDU is 20 MHz;

[0390] The value of the Uplink Bandwidth field is 0, and the value of the Uplink Bandwidth Extension field is the second value. This value combination is reserved (unused);

[0391] The value of the Uplink Bandwidth field is 0, and the value of the Uplink Bandwidth Extension field is the third value. This value combination is reserved (unused);

[0392] The value of the uplink bandwidth field is 0, and the value of the uplink bandwidth extension field is the 4th value. This value combination is reserved (unused).

[0393] Or:

[0394] When the value of the uplink bandwidth field is 0 and the value of the uplink bandwidth extension field is the first value, the transmission bandwidth of the jointly indicated EHT TB PPDU is 20 MHz.

[0395] The uplink bandwidth field is set to 0, the uplink bandwidth extension field is set to the second value, and the transmission bandwidth of the jointly indicated EHT TB PPDU is 80MHz. In this case, this combination can be used to support mixed uplink transmission of a 20MHz uplink HE PPDU and an 80MHz uplink EHT PPDU. For example, the uplink HE PPDU is transmitted on the primary 20MHz band, and the uplink EHT PPDU is transmitted on an 80MHz band within the secondary 160MHz band. Optionally, all frequency bands within the 320MHz band except for the primary 20MHz band and the 80MHz band within the secondary 160MHz band are punctured. This combination can of course still support the transmission of non-A-PPDUs of the corresponding bandwidth, such as the uplink HE PPDU and the uplink EHT PPDU.

[0396] The value of the Uplink Bandwidth field is 0, the value of the Uplink Bandwidth Extension field is the third value, and the transmission bandwidth of the jointly indicated EHT TB PPDU is 160 MHz. In this case, this combination can be used to support mixed uplink transmission of 20 MHz uplink HE PPDUs and 160 MHz uplink EHT PPDUs. For example, the uplink HE PPDU is transmitted on the primary 40 MHz, and the uplink EHT PPDU is transmitted on the secondary 160 MHz. Optionally, all frequency bands within the 320 MHz band except the primary 20 MHz and the secondary 160 MHz are punctured. Of course, this combination can still support the transmission of non-A-PPDUs of the corresponding bandwidth, such as the uplink HE PPDU and the uplink EHT PPDU.

[0397] The value of the uplink bandwidth field is 0, and the value of the uplink bandwidth extension field is the 4th value. This value combination is reserved (unused).

[0398] Note: Mixed uplink transmission of 20MHz uplink HE PPDU and 80MHz uplink EHT PPDU may not be allowed in the protocol, so it is also possible to

[0399] When the value of the uplink bandwidth field is 0 and the value of the uplink bandwidth extension field is the first value, the total transmission bandwidth of the jointly indicated EHT TB PPDU is 20 MHz.

[0400] The value of the Uplink Bandwidth field is 0, the value of the Uplink Bandwidth Extension field is the second value, and the transmission bandwidth of the jointly indicated EHT TB PPDU is 160MHz. In this case, this combination can be used to support mixed uplink transmission of 20MHz uplink HE PPDU and 160MHz uplink EHT PPDU. Of course, this combination can still support the transmission of non-A-PPDUs of the corresponding bandwidth, such as uplink HE PPDU and uplink EHT PPDU.

[0401] The value of the uplink bandwidth field is 0, and the value of the uplink bandwidth extension field is the third value. This value combination is reserved (unused).

[0402] The value of the uplink bandwidth field is 0, and the value of the uplink bandwidth extension field is the 4th value. This value combination is reserved (unused).

[0403] When the Uplink Bandwidth field is set to 1, the Uplink Bandwidth Extension field is a reserved field, and the bandwidth of the EHT TB PPDU indicated in the joint statement is 40 MHz. In this case, the maximum possible total transmission bandwidth of the uplink PPDU is 40 MHz.

[0404] The above sentence can also be understood as:

[0405] When the Uplink Bandwidth field is set to 1 and the Uplink Bandwidth Extension field is set to the first value, the bandwidth of the jointly indicated EHT TB PPDU is 40 MHz. In this case, the maximum possible total transmission bandwidth of the uplink PPDU is 40 MHz.

[0406] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the second value. This value combination is reserved (unused).

[0407] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the third value. This value combination is reserved (unused).

[0408] The value of the uplink bandwidth field is 1, the value of the uplink bandwidth extension field is the 4th value, and this value combination is reserved (unused).

[0409] Or:

[0410] When the value of the uplink bandwidth field is 1 and the value of the uplink bandwidth extension field is the first value, the transmission bandwidth of the jointly indicated EHT TB PPDU is 40 MHz.

[0411] The uplink bandwidth field takes the value of 1, the uplink bandwidth extension field takes the value of the second value, and the transmission bandwidth of the jointly indicated EHT TB PPDU is 80MHz; in this case, this combination can be used to support mixed uplink transmission of a 40MHz uplink HE PPDU and an 80MHz uplink EHT PPDU. For example, the uplink HE PPDU occupies the primary 40MHz, and the uplink EHT PPDU occupies 80MHz in the secondary 160MHz. Optionally, all frequency bands within the 320MHz band except the primary 40MHz and the 80MHz in the secondary 160MHz are punctured. This combination can of course still support the transmission of non-A-PPDUs of the corresponding bandwidth, such as the uplink HE PPDU and the uplink EHT PPDU.

[0412] The uplink bandwidth field is set to 1, the uplink bandwidth extension field is set to the third value, and the transmission bandwidth of the jointly indicated EHT TB PPDU is 160MHz. In this case, this combination can be used to support mixed uplink transmission of 40MHz uplink HE PPDU and 160MHz uplink EHT PPDU. For example, the uplink HE PPDU occupies the primary 40MHz and the uplink EHT PPDU occupies the secondary 160MHz. Optionally, all frequency bands within the 320MHz band except the primary 40MHz and the secondary 160MHz are punctured. This combination can of course still support the transmission of non-A-PPDUs of the corresponding bandwidth, such as the uplink HE PPDU and the uplink EHT PPDU.

[0413] The value of the uplink bandwidth field is 1, the value of the uplink bandwidth extension field is the 4th value, and this value combination is reserved (unused).

[0414] Note: Mixed uplink transmission of 40MHz uplink HE PPDU and 80MHz uplink EHT PPDU may or may not be allowed in the protocol, so it can also be:

[0415] When the value of the uplink bandwidth field is 1 and the value of the uplink bandwidth extension field is the first value, the transmission bandwidth of the jointly indicated EHT TB PPDU is 40 MHz.

[0416] The value of the Uplink Bandwidth field is 1, and the value of the Uplink Bandwidth Extension field is the second value. The transmission bandwidth of the jointly indicated EHT TB PPDU is 160MHz. In this case, this combination can be used to support mixed uplink transmission of 40MHz uplink HE PPDU and 160MHz uplink EHT PPDU. Of course, this combination can still support the transmission of non-A-PPDUs of the corresponding bandwidth, such as uplink HE PPDU and uplink EHT PPDU.

[0417] The value of the uplink bandwidth field is 1, the value of the uplink bandwidth extension field is the third value, and this value combination is reserved (unused).

[0418] The value of the uplink bandwidth field is 1, the value of the uplink bandwidth extension field is the 4th value, and this value combination is reserved (unused).

[0419] When the Uplink Bandwidth field is set to 2 and the Uplink Bandwidth Extension field is set to 1, the bandwidth of the jointly indicated EHT TB PPDU is 80 MHz. In this case, the maximum possible total transmission bandwidth of the uplink PPDU is 160 MHz (80 MHz + 80 MHz).

[0420] When the Uplink Bandwidth field is set to 2 and the Uplink Bandwidth Extension field is set to the second value, the bandwidth of the jointly indicated EHT TB PPDU is 160 MHz. In this case, the maximum possible total transmission bandwidth of the uplink PPDU is 320 MHz. This is because the EHT standard does not include a 240 MHz bandwidth (80 MHz + 160 MHz). Therefore, the maximum possible total transmission bandwidth of the uplink PPDU of 320 MHz can be considered to be punctured 80 MHz, and its actual transmission bandwidth is 240 MHz.

[0421] When the Uplink Bandwidth field is set to 2 and the Uplink Bandwidth Extension field is set to the third value, the bandwidth of the jointly indicated EHT TB PPDU is 320 MHz - 1. In this case, the maximum possible total transmission bandwidth of the uplink PPDU is 320 MHz. It should be understood that 80 MHz + 320 MHz exceeds 320 MHz, but the maximum possible total transmission bandwidth of the uplink PPDU is still 320 MHz.

[0422] When the value of the Uplink Bandwidth field is 2 and the value of the Uplink Bandwidth Extension field is the 4th value, the bandwidth of the jointly indicated EHT TB PPDU is 320 MHz - 2. In this case, the maximum possible total transmission bandwidth of the uplink PPDU is 320 MHz.

[0423] When the Uplink Bandwidth field is set to 3 and the Uplink Bandwidth Extension field is set to 1, the bandwidth of the jointly indicated EHT TB PPDU is 80 MHz. In this case, the maximum possible total transmission bandwidth of the uplink PPDU is 320 MHz. This is because the EHT standard does not include a 240 MHz bandwidth (160 MHz + 80 MHz).

[0424] When the Uplink Bandwidth field is set to 3 and the Uplink Bandwidth Extension field is set to 2, the bandwidth of the jointly indicated EHT TB PPDU is 160 MHz. In this case, the maximum possible total transmission bandwidth of the uplink PPDU is 320 MHz (160 MHz + 160 MHz).

[0425] When the Uplink Bandwidth field is set to 3 and the Uplink Bandwidth Extension field is set to the third value, the bandwidth of the jointly indicated EHT TB PPDU is 320 MHz - 1. In this case, the maximum total bandwidth possible for uplink PPDU transmission is 320 MHz. It should be understood that 160 MHz + 320 MHz exceeds 320 MHz, but the maximum total bandwidth possible for uplink PPDU transmission is still 320 MHz.

[0426] When the Uplink Bandwidth field is set to 3 and the Uplink Bandwidth Extension field is set to the 4th value, the bandwidth of the jointly indicated EHT TB PPDU is 320 MHz - 2. In this case, the maximum total bandwidth possible for uplink PPDU transmission is 320 MHz. It should be understood that 160 MHz + 320 MHz exceeds 320 MHz, but the maximum possible total bandwidth for uplink PPDU transmission is still 320 MHz.

[0427] In this embodiment 2.2, the uplink bandwidth extension field occupies 2 bits and can represent a total of four values, from 0 to 3. The first to fourth values ​​can be any one of {0, 1, 2, 3}, and the first, second, third, and fourth values ​​are different. For example, the first value is 0, the second value is 1, the third value is 2, and the fourth value is 3.

[0428] It can be seen that the values ​​and meanings of the uplink bandwidth extension field in the above-mentioned implementation 2.1 and the above-mentioned implementation 2.2 can be summarized as shown in the following Table 6.

[0429] Table 6

[0430]

[0431]

[0432] Table 6a

[0433]

[0434] Table 6b

[0435]

[0436]

[0437] In implementation 2.1, when the EHT TB PPDU bandwidth is 320 MHz, the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 3 values, respectively, or the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 3 values, respectively. To facilitate implementation by the receiving station or to provide more reserved combinations or unused values, two methods are proposed:

[0438] 1. When the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and the third value respectively, the EHT TB PPDU bandwidth is 320 MHz; or, when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and the third value respectively, the EHT TB PPDU bandwidth is 320 MHz; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and the third value respectively, this is a reserved combination.

[0439] It can also be expressed as:

[0440] When the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and the third value respectively, the EHT TB PPDU bandwidth is 320MHz; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and the third value respectively, this is a reserved combination.

[0441] Alternatively, when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 3 values ​​respectively, the EHT TB PPDU bandwidth is 320MHz; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 3 values ​​respectively, this is a reserved combination.

[0442] 2. When the Uplink Bandwidth Extension field is set to the third value, the Uplink Bandwidth field can be set to any value, that is, any one of 0 to 3. At this time, the EHT TB PPDU bandwidth is 320 MHz.

[0443] In implementation 2.2, when the EHT TB PPDU bandwidth is 320MHz-1, the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 3 values, respectively, or the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 3 values, respectively. To facilitate implementation at the receiving station, two methods are proposed:

[0444] 1. When the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and the third value respectively, the EHT TB PPDU bandwidth is 320MHz-1; or, when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and the third value respectively, the EHT TB PPDU bandwidth is 320MHz-1; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and the third value respectively, this is a reserved combination.

[0445] It can also be expressed as:

[0446] When the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and the third value respectively, the EHT TB PPDU bandwidth is 320-1MHz; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and the third value respectively, this is a reserved combination.

[0447] Alternatively, when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 3 values ​​respectively, the EHT TB PPDU bandwidth is 320-1MHz; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 3 values ​​respectively, this is a reserved combination.

[0448] 2. When the Uplink Bandwidth Extension field is set to the third value, the Uplink Bandwidth field can be set to any value, that is, any one of 0 to 3. In this case, the EHT TB PPDU bandwidth is 320MHz-1.

[0449] When the EHT TB PPDU bandwidth is 320MHz-2, the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 4 values ​​respectively, or the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 4 values ​​respectively. In order to facilitate the implementation of the receiving station, two methods are proposed:

[0450] 1. When the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 4 values ​​respectively, the EHT TB PPDU bandwidth is 320MHz-2; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 4 values ​​respectively, this is a reserved combination.

[0451] Alternatively, when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 4 values ​​respectively, the EHT TB PPDU bandwidth is 320MHz-2; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 4 values ​​respectively, this is a reserved combination.

[0452] 2. When the Uplink Bandwidth Extension field is set to the 4th value, the Uplink Bandwidth field can be set to any value, that is, any one of 0 to 3. At this time, the EHT TB PPDU bandwidth is 320MHz-2.

[0453] In embodiment 2.2, when the EHT TB PPDU bandwidth is 320 MHz-1 or 320 MHz-2, method 1 proposes to indicate the EHT TB PPDU bandwidth by one combination, and the other combination is reserved (unused).

[0454] As mentioned above, existing 160MHz 802.11ax or 802.11ac stations may combine legacy preambles on every 20MHz of the 160MHz band, such as the L-SIG field, or combine duplicate preambles on every 20MHz of the 160MHz band, such as the HE-SIG-A field in 802.11ax or the VHT-SIG-A field in 802.11ac. Therefore, it is proposed that mixed transmission of uplink PPDUs on the primary 160MHz band is not allowed. Otherwise, 802.11ax or 802.11ac stations supporting 160MHz will incorrectly receive the preambles. In this case, the frequency segment size of the EHT / HE indicator field (the bandwidth granularity of the uplink sub-PPDU transmission) must be 160MHz. Therefore, the uplink mixed transmission PPDU (A-PPDU) cannot include both the uplink HE PPDU and the uplink EHT PPDU in the primary 160 MHz. For example, within the 160 MHz bandwidth, the uplink HE PPDU is transmitted on the primary 80 MHz and the uplink EHT PPDU is transmitted on the secondary 80 MHz, or the uplink EHT PPDU is transmitted on the primary 80 MHz and the uplink HE PPDU is transmitted on the secondary 80 MHz; for example, within the 320 MHz bandwidth, the uplink HE PPDU is transmitted on the primary 80 MHz, the uplink EHT PPDU is transmitted on the secondary 80 MHz, and the EHT PPDU is transmitted on the secondary 160 MHz, or the uplink EHT PPDU is transmitted on the primary 80 MHz, the uplink HE PPDU is transmitted on the secondary 80 MHz, and the EHT PPDU is transmitted on the secondary 160 MHz; therefore, the design of the uplink bandwidth extension field or the uplink EHT PPDU bandwidth of the trigger frame does not need to support the above-mentioned uplink HE PPDU and uplink EHT PPDU in the primary 160 MHz. Mixed transmission of PPDU, such as the four types of mixed transmission mentioned above.

[0455] Implementation 2.3:

[0456] When the value of the Uplink Bandwidth Extension field is the first value, the bandwidth of the EHT TB PPDU jointly indicated by the Uplink Bandwidth field and the Uplink Bandwidth Extension field is the same as the bandwidth indicated by the Uplink Bandwidth field;

[0457] When the value of the Uplink Bandwidth Extension field is the second value, the bandwidth of the EHT TB PPDU jointly indicated by the Uplink Bandwidth field and the Uplink Bandwidth Extension field is 80 MHz;

[0458] When the value of the Uplink Bandwidth Extension field is the third value, the bandwidth of the EHT TB PPDU jointly indicated by the Uplink Bandwidth field and the Uplink Bandwidth Extension field is 160 MHz;

[0459] When the value of the uplink bandwidth extension field is the fourth value, the bandwidth of the EHT TB PPDU jointly indicated by the uplink bandwidth field and the uplink bandwidth extension field is 320 MHz.

[0460] In this embodiment 2.3, the uplink bandwidth extension field occupies 2 bits and can represent a total of four values, from 0 to 3. The first to fourth values ​​can be any one of {0, 1, 2, 3}, and the first, second, third, and fourth values ​​are different. For example, the first value is 0, the second value is 1, the third value is 2, and the fourth value is 3.

[0461] It can be seen that the value and meaning of the uplink bandwidth extension field in this implementation 2.3 can be summarized as shown in the following Table 7.

[0462] Table 7

[0463]

[0464] Implementation 2.4:

[0465] When the value of the Uplink Bandwidth Extension field is the first value, the bandwidth of the EHT TB PPDU jointly indicated by the Uplink Bandwidth field and the Uplink Bandwidth Extension field is the same as the bandwidth indicated by the Uplink Bandwidth field;

[0466] When the value of the Uplink Bandwidth Extension field is the second value, the bandwidth of the EHT TB PPDU jointly indicated by the Uplink Bandwidth field and the Uplink Bandwidth Extension field is 80 MHz;

[0467] When the value of the Uplink Bandwidth Extension field is the third value, the bandwidth of the EHT TB PPDU jointly indicated by the Uplink Bandwidth field and the Uplink Bandwidth Extension field is 160 MHz;

[0468] When the value of the Uplink Bandwidth Extension field is the 4th value, the bandwidth of the EHT TB PPDU jointly indicated by the Uplink Bandwidth field and the Uplink Bandwidth Extension field is 320 MHz - 1;

[0469] When the value of the uplink bandwidth extension field is the 5th value, the bandwidth of the EHT TB PPDU jointly indicated by the uplink bandwidth field and the uplink bandwidth extension field is 320 MHz-2; other values ​​are reserved.

[0470] In this embodiment 2.4, the uplink bandwidth extension field occupies 3 bits and can represent a total of 8 values ​​from 0 to 7. The first to fifth values ​​can be any one of {0, 1, 2, 3, 4, 5, 6, 7}, and the first, second, third, fourth, and fifth values ​​are different. For example, the first value is 0, the second value is 1, the third value is 2, the fourth value is 3, and the fifth value is 4. The other values ​​(i.e., 5, 6, and 7) are reserved.

[0471] It can be seen that the value and meaning of the uplink bandwidth extension field in this implementation 2.4 can be summarized as shown in the following Table 8.

[0472] Table 8

[0473]

[0474]

[0475] In various implementations of method 2 above, if the station transmits an uplink HE TB PPDU, its bandwidth is the value indicated by the Uplink Bandwidth field. If the station transmits an uplink EHT TB PPDU, its bandwidth is the bandwidth jointly indicated by the Uplink Bandwidth field and the Uplink Bandwidth Extension field.

[0476] Optionally, after receiving a trigger frame, when a station transmits an EHT TB PPDU, the bandwidth of the communication signaling field in the uplink physical layer preamble is determined by the uplink bandwidth field and the uplink bandwidth extension field. Optionally, the bandwidth value is also set using fields such as the Channel Width and CCFS fields in the EHT Operation element. The Channel Width field indicates the BSS bandwidth (that is, the maximum bandwidth of the PPDU supported for transmission within the BSS), and one or more CCFS fields indicate the center frequency of the BSS bandwidth, allowing associated stations to determine whether the 320 MHz PPDU transmitted by the BSS is a 320 MHz-1 PPDU or a 320 MHz-2 PPDU. Unassociated stations or stations in other basic service sets can determine whether the 320 MHz PPDU transmitted by the BSS is a 320 MHz-1 PPDU or a 320 MHz-2 PPDU by receiving management frames, such as beacon frames, sent by the AP in the basic service set, or by displaying an indication in the trigger frame indicating whether it is 320 MHz-1 or 320 MHz-2.

[0477] Optionally, in the above-mentioned embodiments 2.1 and 2.3, after the EHT site receives the trigger frame, if the bandwidth of the transmitted uplink EHT TB PPDU is 320 MHz, the 320 MHz bandwidth can be determined based on the bandwidth field and CCFS field of the EHT operation element, and whether it is 320 MHz-1 or 320 MHz-2, and filled in the general signaling field of the preamble code of the uplink EHT TB PPDU.

[0478] Optionally, in the above-mentioned embodiments 2.2 and 2.4, after receiving the trigger frame, if the bandwidth of the transmitted uplink EHT TB PPDU is 320 MHz, the general signaling field of the preamble code of the uplink EHT TB PPDU can be filled in according to 320 MHz-1 or 320 MHz-2 indicated in the trigger frame (specifically, the joint indication of the uplink bandwidth field and the uplink bandwidth extension field of the trigger frame).

[0479] The above is a description of various implementations of Method 2. To facilitate understanding, the implementation of Method 2 will be described below with reference to specific examples. Specifically, the following examples are described using Implementation 2.1 of Method 2 as an example.

[0480] In the following examples, it is assumed that the aforementioned second indication information adopts implementation mode a-3 of method a, that is, the 320MHz channel can be used for mixed transmission of HE TB PPDU and EHT TB PPDU, and the EHT / HE indication field occupies 4 bits. In this case, the unused bits in the 4-bit EHT / HE indication field depend on the total transmission bandwidth of the uplink PPDU. For example, if the total transmission bandwidth of the uplink PPDU is 160MHz, 2 bits of the 4-bit EHT / HE indication field are unused; for another example, if the total transmission bandwidth of the uplink PPDU is 320MHz, 0 bits of the 4-bit EHT / HE indication field are unused. It should be understood that the following examples are also applicable to other implementation modes of the second indication information. It should also be understood that the various implementation modes of the aforementioned second indication information are applicable to the various implementation modes of the aforementioned first indication information.

[0481] For ease of description, the following examples assume that the primary 80 MHz channel is the first 80 MHz channel, the secondary 80 MHz channel is the second 80 MHz channel, and the secondary 160 MHz channels are the third and fourth 80 MHz channels. The first through fourth 80 MHz channels are sorted from highest to lowest, or from lowest to highest. It should be understood that the primary 80 MHz channel can be any 80 MHz channel in the frequency band, the secondary 80 MHz channel is located adjacent to the primary 80 MHz channel, and the secondary 160 MHz channels are continuous.

[0482] Example 2.1:

[0483] The AP sends a trigger frame in which the Uplink Bandwidth field (value 3) indicates 160 MHz, and the Uplink Bandwidth Extension field (value 2) combined with the Uplink Bandwidth field indicate that the bandwidth of the EHT TB PPDU is 160 MHz. The EHT / HE Indication field in the trigger frame has a value of 0011 (where 0 indicates transmission of an HE TB PPDU and 1 indicates transmission of an EHT TB PPDU).

[0484] After multiple stations receive the trigger frame, the HE station or EHT station transmits the HE TB PPDU on the first and second 80 MHz channels according to the indication of the EHT / HE indication field, where the bandwidth field of the efficient signaling field A in the preamble of the HE TB PPDU is set to 160 MHz as indicated by the uplink bandwidth field. The EHT station sets the bandwidth field of the general signaling field in the preamble of the EHT TB PPDU to 160 MHz (this value is the value jointly indicated by the uplink bandwidth field and the uplink bandwidth extension field) according to the uplink bandwidth field and the uplink bandwidth extension field, and transmits the EHT TB PPDU on the third and fourth 80 MHz channels according to the indication of the EHT / HE indication field.

[0485] The AP receives an uplink multi-user PPDU, which includes uplink sub-PPDUs sent by one or more stations. The AP then responds with an acknowledgment frame. The acknowledgment frame sent to one or more stations can be sent via downlink OFDMA or non-HT duplicate transmission.

[0486] Example 2.2:

[0487] The AP sends a trigger frame in which the Uplink Bandwidth field (value 2) indicates 80 MHz, and the Uplink Bandwidth Extension field (value 1) combined with the Uplink Bandwidth field indicates that the bandwidth of the EHT TB PPDU is 80 MHz. The EHT / HE Indication field in the trigger frame has a value of 0100 (where 0 indicates transmission of an HE TB PPDU and 1 indicates transmission of an EHT TB PPDU).

[0488] After multiple stations receive the trigger frame, the HE station or EHT station transmits the HE TB PPDU on the first 80MHz channel according to the instruction of the EHT / HE indication field, where the bandwidth field of the efficient signaling field A in the preamble of the HE TB PPDU is set to 80MHz indicated by the uplink bandwidth field. The EHT station sets the bandwidth field of the general signaling field in the preamble of the EHT TB PPDU to 80MHz (this value is the value jointly indicated by the uplink bandwidth field and the uplink bandwidth extension field) according to the uplink bandwidth field and the uplink bandwidth extension field, and transmits the EHT TB PPDU on the second 80MHz channel according to the instruction of the EHT / HE indication field.

[0489] The AP receives an uplink multi-user PPDU, which includes uplink sub-PPDUs sent by one or more stations. The AP then responds with an acknowledgment frame. The acknowledgment frame sent to one or more stations can be sent via downlink OFDMA or non-HT duplicate transmission.

[0490] Example 2.3:

[0491] The AP sends a trigger frame in which the uplink bandwidth field (whose value is 2) indicates 80 MHz, and the uplink bandwidth extension field (whose value is 1) combined with the uplink bandwidth field indicates that the bandwidth of the EHT TB PPDU is 80 MHz. The value of the EHT / HE indication field in the trigger frame is 1000 (where 0 indicates the transmission of the HE TB PPDU and 1 indicates the transmission of the EHT TB PPDU). The trigger frame does not include the user information field for scheduling HE sites, that is, the value of the AID12 field in the user information field is not equal to the association identifier of any HE site; and the trigger frame does not allocate resources on the second 80 MHz channel to the EHT site.

[0492] After multiple stations receive the trigger frame, the EHT station sets the bandwidth field of the general signaling field in the preamble of the EHT TB PPDU to 80 MHz according to the uplink bandwidth field and the uplink bandwidth extension field (this value is the value jointly indicated by the uplink bandwidth field and the uplink bandwidth extension field), and transmits the EHT TB PPDU on the first 80 MHz channel according to the indication of the EHT / HE indication field.

[0493] The AP receives an uplink multi-user PPDU, which includes uplink sub-PPDUs sent by one or more stations. The AP then responds with an acknowledgment frame. The acknowledgment frame sent to one or more stations can be sent via downlink OFDMA or non-HT duplicate transmission.

[0494] Example 2.4:

[0495] The AP sends a trigger frame in which the Uplink Bandwidth field (value 2) indicates 80 MHz, and the Uplink Bandwidth Extension field (value 3) combined with the Uplink Bandwidth field indicates an EHT TB PPDU bandwidth of 320 MHz. The EHT / HE Indication field in the trigger frame has a value of 0111 (where 0 indicates transmission of an HE TB PPDU and 1 indicates transmission of an EHT TB PPDU).

[0496] After multiple stations receive the trigger frame, the HE station or EHT station transmits the HE TB PPDU on the first 80 MHz channel according to the indication of the EHT / HE indication field, where the bandwidth field of the efficient signaling field A in the preamble of the HE TB PPDU is set to 80 MHz indicated by the uplink bandwidth field. The EHT station sets the bandwidth field of the general signaling field in the preamble of the EHT TB PPDU to 320 MHz (this value is the value jointly indicated by the uplink bandwidth field and the uplink bandwidth extension field) according to the uplink bandwidth field and the uplink bandwidth extension field, and transmits the EHT TB PPDU on the second, third, and fourth 80 MHz channels according to the indication of the EHT / HE indication field.

[0497] The AP receives an uplink multi-user PPDU, which includes uplink sub-PPDUs sent by one or more stations. The AP then responds with an acknowledgment frame. The acknowledgment frame sent to one or more stations can be sent via downlink OFDMA or non-HT duplicate transmission.

[0498] Example 2.5:

[0499] The AP sends a trigger frame in which the Uplink Bandwidth field (value 3) indicates 160 MHz, and the Uplink Bandwidth Extension field (value 1) combined with the Uplink Bandwidth field indicates an EHT TB PPDU bandwidth of 80 MHz. The EHT / HE Indication field in the trigger frame has a value of 0011 or 0001 (where 0 indicates transmission of an HE TB PPDU and 1 indicates transmission of an EHT TB PPDU).

[0500] After multiple stations receive the trigger frame, the HE station or EHT station transmits the HE TB PPDU on the first and second 80 MHz channels according to the indication of the EHT / HE indication field, where the bandwidth field of the efficient signaling field A in the preamble of the HE TB PPDU is set to 160 MHz as indicated by the uplink bandwidth field. The EHT station sets the bandwidth field of the general signaling field in the preamble of the EHT TB PPDU to 80 MHz (this value is the value jointly indicated by the uplink bandwidth field and the uplink bandwidth extension field) according to the uplink bandwidth field and the uplink bandwidth extension field, and transmits the EHT TB PPDU on the fourth 80 MHz channel according to the indication of the EHT / HE indication field.

[0501] It should be understood that when the value of the EHT / HE Indication field is 0001, it indicates that the HE TB PPDU is transmitted on the first, second, and third 80 MHz channels. However, the bandwidth of the HE TB PPDU indicated by the uplink bandwidth field is only 160 MHz. Therefore, the third 80 MHz channel is punctured, and only the first and second 80 MHz channels can transmit the HE TB PPDU. When the value of the EHT / HE Indication field is 0011, it indicates that the EHT TB PPDU is transmitted on the third and fourth 80 MHz channels. However, the bandwidth of the jointly indicated EHT TB PPDU is only 80 MHz. Therefore, one of the third and fourth 80 MHz channels must be punctured. The specific 80 MHz channel punctured depends on the 80 MHz channel on which the resources allocated to the EHT station in the trigger frame are located. For example, if the resources allocated to the EHT station in the trigger frame are located on the fourth 80 MHz channel, the third 80 MHz channel is punctured, and the EHT TB PPDU can only be transmitted on the fourth 80 MHz channel. For another example, if the resources allocated to the EHT station in the trigger frame are located on the third 80 MHz channel, the fourth 80 MHz channel is punctured and the EHT TB PPDU can only be transmitted on the third 80 MHz channel.

[0502] The AP receives an uplink multi-user PPDU, which includes uplink sub-PPDUs sent by one or more stations. The AP then responds with an acknowledgment frame. The acknowledgment frame sent to one or more stations can be sent via downlink OFDMA or non-HT duplicate transmission. See Figure 11, which is a timing diagram of the AP triggering the station to perform uplink data transmission in Example 2.5. In Figure 11, the third 80MHz channel is punctured, and the uplink multi-user PPDU includes a HE TB PPDU with a bandwidth of 160MHz and an EHT TB PPDU with a bandwidth of 80MHz.

[0503] Method 3: The first indication information is directly used to indicate the total transmission bandwidth of the uplink PPDU. The first indication information is carried in the uplink PPDU total bandwidth field, which occupies 3 bits.

[0504] Implementation 3.1:

[0505] When the value of the uplink PPDU total bandwidth field is 1, it indicates that the total transmission bandwidth of the uplink PPDU is 20 MHz;

[0506] When the value of the uplink PPDU total bandwidth field is the second value, it indicates that the total transmission bandwidth of the uplink PPDU is 40 MHz;

[0507] When the value of the uplink PPDU total bandwidth field is the third value, it indicates that the total transmission bandwidth of the uplink PPDU is 80 MHz;

[0508] When the value of the uplink PPDU total bandwidth field is the 4th value, it indicates that the total transmission bandwidth of the uplink PPDU is 160 MHz;

[0509] When the value of the uplink PPDU total bandwidth field is the 5th value, it indicates that the total transmission bandwidth of the uplink PPDU is 320 MHz; other values ​​are not used.

[0510] In this embodiment 3.1, the uplink bandwidth extension field occupies 3 bits and can represent a total of 8 values ​​​​from 0 to 7. The first to fifth values ​​can be any one of {0, 1, 2, 3, 4, 5, 6, 7}, and the first value, second value, third value, fourth value, and fifth value are different from each other. For example, the first value is 0, the second value is 1, the third value is 2, the fourth value is 3, and the fifth value is 4. The other values ​​​​(i.e., 5, 6, 7) are reserved.

[0511] Implementation 3.2:

[0512] When the value of the uplink PPDU total bandwidth field is 1, it indicates that the total transmission bandwidth of the uplink PPDU is 20 MHz;

[0513] When the value of the uplink PPDU total bandwidth field is the second value, it indicates that the total transmission bandwidth of the uplink PPDU is 40 MHz;

[0514] When the value of the uplink PPDU total bandwidth field is the third value, it indicates that the total transmission bandwidth of the uplink PPDU is 80 MHz;

[0515] When the value of the uplink PPDU total bandwidth field is the 4th value, it indicates that the total transmission bandwidth of the uplink PPDU is 160 MHz;

[0516] When the value of the uplink PPDU total bandwidth field is the 5th value, it indicates that the total transmission bandwidth of the uplink PPDU is 320MHz-1;

[0517] When the value of the uplink PPDU total bandwidth field is the 6th value, it indicates that the total transmission bandwidth of the uplink PPDU is 320MHz-2; other values ​​are not used.

[0518] In this embodiment 3.2, the total uplink PPDU bandwidth occupies 3 bits and can represent 8 values, ranging from 0 to 7. The first through sixth values ​​can be any of {0, 1, 2, 3, 4, 5, 6, 7}, and the first, second, third, fourth, fifth, and sixth values ​​are different. For example, the first value is 0, the second value is 1, the third value is 2, the fourth value is 3, the fifth value is 4, and the sixth value is 5. The other values ​​(i.e., 6 and 7) are reserved.

[0519] It can be seen that the values ​​and meanings of the uplink PPDU total bandwidth field in the above-mentioned embodiments 3.1 and 3.2 can be summarized as shown in the following Table 9.

[0520] Table 9

[0521]

[0522] The total transmission bandwidth field and the uplink bandwidth field of the uplink PPDU are two independent fields. For example, when the total transmission bandwidth field of the uplink PPDU is set to the first value (i.e., the transmission bandwidth of the corresponding uplink PPDU is 20 MHz), the uplink bandwidth field can be set to any value. To facilitate the implementation of the receiver or to provide more reserved combinations (unused values), it is proposed in embodiment 4.1 or 4.2:

[0523] 1. When the Total Transmission Bandwidth field of the uplink PPDU is set to the first value, the bandwidth of the uplink EHT TB PPDU is 20 MHz, and the Uplink Bandwidth field must be set to one of the four values ​​"0-3", such as 0. Then, the Total Transmission Bandwidth field of the uplink PPDU is set to the first value, and the Uplink Bandwidth field must be set to any of the other three values ​​in the four values ​​"0-3" (such as 1, 2, or 3). The corresponding three value combinations are reserved (unused).

[0524] 2. When the Total Transmission Bandwidth field of the uplink PPDU is set to the second value, the bandwidth of the uplink EHT TB PPDU is 40 MHz, and the Uplink Bandwidth field needs to be set to one of the four values ​​"0-3", such as 1. Then the Total Transmission Bandwidth field of the uplink PPDU is set to the second value, and the Uplink Bandwidth field needs to be set to any of the other three values ​​in the four values ​​"0-3" (such as 0, 2, or 3). The corresponding three value combinations are reserved combinations (unused).

[0525] 3. When the Total Transmission Bandwidth field of the uplink PPDU is set to the third value, the bandwidth of the uplink EHT TB PPDU is 80 MHz, and the Uplink Bandwidth field needs to be set to one of the four values ​​"0-3", such as 2 or 3. Then, when the Total Transmission Bandwidth field of the uplink PPDU is set to the third value and the Uplink Bandwidth field needs to be set to any other value among the four values ​​"0-3" (such as any one of 0, 1, and 2, or any one of 0, 1, and 3), the corresponding value combination is reserved (unused).

[0526] or

[0527] When the Total Transmission Bandwidth field of the uplink PPDU is set to the third value, the bandwidth of the uplink EHT TB PPDU is 80 MHz, and the Uplink Bandwidth field needs to be set to two of the four values ​​"0 to 3", such as 2 and 3. Then the Total Transmission Bandwidth field of the uplink PPDU is set to the third value and the Uplink Bandwidth field needs to be set to the other two values ​​of the four values ​​"0 to 3" (such as 0, 1). The corresponding value combinations are reserved combinations (unused).

[0528] 4. When the Total Transmission Bandwidth field of the uplink PPDU is set to the 4th value, the bandwidth of the uplink EHT TB PPDU is 160 MHz, and the Uplink Bandwidth field needs to be set to one of the four values ​​"0-3", such as 2 or 3. Then, when the Total Transmission Bandwidth field of the uplink PPDU is set to the 4th value and the Uplink Bandwidth field needs to be set to any other value among the four values ​​"0-3" (such as any one of 0, 1, and 2, or any one of 0, 1, and 3), the corresponding value combination is reserved (unused).

[0529] or

[0530] When the total transmission bandwidth field of the uplink PPDU is set to the 4th value, the bandwidth of the uplink EHT TB PPDU is 160MHz, and the uplink bandwidth field needs to be set to two of the four values ​​"0-3", such as 2 and 3. Then the two value combinations corresponding to the uplink PPDU total transmission bandwidth field being set to the 4th value and the uplink bandwidth field being set to the other two values ​​of the four values ​​"0-3" (such as 0 and 1) are reserved combinations (unused).

[0531] In Example 4.1

[0532] 5. When the Total Transmission Bandwidth field of the uplink PPDU is set to the 5th value, the bandwidth of the uplink EHT TB PPDU is 320 MHz, and the Uplink Bandwidth field needs to be set to one of the four values ​​"0-3", such as 2 or 3. Then, when the Total Transmission Bandwidth field of the uplink PPDU is set to the 5th value and the Uplink Bandwidth field needs to be set to any other value among the four values ​​"0-3" (such as any one of 0, 1, and 2, or any one of 0, 1, and 3), the corresponding value combination is reserved (unused).

[0533] or

[0534] When the total transmission bandwidth field of the uplink PPDU is set to the 5th value, the bandwidth of the uplink EHT TB PPDU is 320MHz, and the uplink bandwidth field needs to be set to two of the four values ​​"0 to 3", such as 2 and 3. Then the total transmission bandwidth field of the uplink PPDU is set to the 5th value and the uplink bandwidth field needs to be set to the other two values ​​of the four values ​​"0 to 3" (such as 0 and 1). The corresponding value combination is a reserved combination (unused).

[0535] In Example 4.2

[0536] 5. When the total transmission bandwidth field of the uplink PPDU is set to the 5th value, the bandwidth of the uplink EHT TB PPDU is 320MHz-1, and the uplink bandwidth field needs to be set to one of the four values ​​"0-3", such as 2 or 3. Then the total transmission bandwidth field of the uplink PPDU is set to the 5th value and the uplink bandwidth field needs to be set to any other value in the four values ​​"0-3" (such as any one of 0, 1, and 2, or any one of 0, 1, and 3). The corresponding value combination is reserved (unused).

[0537] or

[0538] When the total transmission bandwidth field of the uplink PPDU is set to the 5th value, the bandwidth of the uplink EHT TB PPDU is 320MHz-1, and the uplink bandwidth field needs to be set to two of the four values ​​"0 to 3", such as 2 and 3. Then the value combination corresponding to the total transmission bandwidth field of the uplink PPDU being set to the 5th value and the uplink bandwidth field being set to the other two values ​​of the four values ​​"0 to 3" (such as 0 and 1) is a reserved combination (unused).

[0539] 6. When the Total Transmission Bandwidth field of the uplink PPDU is set to the 6th value, the bandwidth of the uplink EHT TB PPDU is 320MHz-2, and the Uplink Bandwidth field needs to be set to one of the four values ​​"0-3", such as 2 or 3. Then the Total Transmission Bandwidth field of the uplink PPDU is set to the 5th value and the Uplink Bandwidth field needs to be set to any other value among the four values ​​"0-3" (such as any one of 0, 1, and 2, or any one of 0, 1, and 3). The corresponding value combination is reserved (unused).

[0540] or

[0541] When the total transmission bandwidth field of the uplink PPDU is set to the 6th value, the bandwidth of the uplink EHT TB PPDU is 320MHz-2, and the uplink bandwidth field needs to be set to two of the four values ​​"0 to 3", such as 2 and 3. Then the value combination corresponding to the total transmission bandwidth field of the uplink PPDU is set to the 5th value and the uplink bandwidth field needs to be set to the other two values ​​of the four values ​​"0 to 3" (such as 0 and 1) is a reserved combination (unused).

[0542] In order to facilitate the implementation of the receiver, or to provide more reserved combinations or unused values, another implementation method is proposed:

[0543] In Example 4.1 or 4.2:

[0544] 1. When the Uplink Bandwidth field is set to 0 and the Uplink PPDU Transmission Total Bandwidth field is set to the first value, the bandwidth of the uplink EHT TB PPDU is 20MHz. Then, the three value combinations corresponding to the Uplink Bandwidth field being set to 0 and the Uplink PPDU Transmission Total Bandwidth field being set to the other three values ​​(such as values ​​2 to 4) are reserved combinations (unused).

[0545] 2. When the Uplink Bandwidth field is set to 1 and the Uplink PPDU Transmission Total Bandwidth field is set to the second value, the bandwidth of the Uplink EHT TB PPDU is 40MHz. Then the three value combinations corresponding to the Uplink Bandwidth field being set to 1 and the Uplink PPDU Transmission Total Bandwidth field being set to the other three values ​​(such as the 1st, 3rd, and 4th values) are reserved combinations (unused).

[0546] In Example 4.1:

[0547] 3. When the Uplink Bandwidth field is set to 2, the Uplink PPDU Transmission Total Bandwidth field is set to the third value. At this time, the bandwidth of the Uplink EHT TB PPDU is 80 MHz.

[0548] When the uplink bandwidth field needs to be set to 2, the total transmission bandwidth field of the uplink PPDU is set to the 4th value. At this time, the bandwidth of the uplink EHT TB PPDU is 160 MHz.

[0549] When the uplink bandwidth field needs to be set to 2, the total transmission bandwidth field of the uplink PPDU is set to the 5th value. At this time, the bandwidth of the uplink EHT TB PPDU is 320 MHz, or this value combination is a reserved combination (unused).

[0550] Then the uplink bandwidth field needs to be set to 2 and the uplink PPDU transmission total bandwidth field is set to the other two values ​​(that is, the first and second values), and the corresponding two value combinations are reserved combinations (unused).

[0551] 4. When the Uplink Bandwidth field is set to 3, the Uplink PPDU Transmission Total Bandwidth field is set to the third value. At this time, the bandwidth of the Uplink EHT TB PPDU is 80 MHz.

[0552] When the uplink bandwidth field needs to be set to 3, the total transmission bandwidth field of the uplink PPDU is set to the 4th value. At this time, the bandwidth of the uplink EHT TB PPDU is 160 MHz.

[0553] When the uplink bandwidth field needs to be set to 3, the uplink PPDU transmission total bandwidth field is set to the 5th value. At this time, the bandwidth of the uplink EHT TB PPDU is 320 MHz, or this value combination is reserved (unused).

[0554] Then the uplink bandwidth field needs to be set to 3 and the uplink PPDU transmission total bandwidth field is set to the other two values ​​(that is, the first and second values), and the corresponding two value combinations are reserved combinations (unused).

[0555] In Example 4.2:

[0556] 3. When the Uplink Bandwidth field is set to 2, the Uplink PPDU Transmission Total Bandwidth field is set to the third value. At this time, the bandwidth of the Uplink EHT TB PPDU is 80 MHz.

[0557] When the uplink bandwidth field needs to be set to 2, the total transmission bandwidth field of the uplink PPDU is set to the 4th value. At this time, the bandwidth of the uplink EHT TB PPDU is 160 MHz.

[0558] When the uplink bandwidth field needs to be set to 2, the total transmission bandwidth field of the uplink PPDU is set to the 5th value. At this time, the bandwidth of the uplink EHT TB PPDU is 320MHz-1, or the combination is reserved (unused).

[0559] When the uplink bandwidth field needs to be set to 2, the total transmission bandwidth field of the uplink PPDU is set to the 6th value. At this time, the bandwidth of the uplink EHT TB PPDU is 320MHz-2, or the combination is reserved (unused).

[0560] Then the uplink bandwidth field needs to be set to 2 and the uplink PPDU transmission total bandwidth field is set to the other two values ​​(that is, the 1st and 2nd values), and the corresponding two combinations are reserved combinations (unused).

[0561] 4. When the Uplink Bandwidth field is set to 3, the Uplink PPDU Transmission Total Bandwidth field is set to the third value. At this time, the bandwidth of the Uplink EHT TB PPDU is 80 MHz.

[0562] When the uplink bandwidth field needs to be set to 3, the total transmission bandwidth field of the uplink PPDU is set to the 4th value. At this time, the bandwidth of the uplink EHT TB PPDU is 160 MHz.

[0563] When the uplink bandwidth field needs to be set to 3, the uplink PPDU transmission total bandwidth field is set to the 5th value. At this time, the bandwidth of the uplink EHT TB PPDU is 320MHz-1, or the combination is reserved (unused).

[0564] When the uplink bandwidth field needs to be set to 3, the uplink PPDU transmission total bandwidth field is set to the 6th value. At this time, the bandwidth of the uplink EHT TB PPDU is 320MH-2, or the combination is reserved (unused).

[0565] Then the uplink bandwidth field needs to be set to 3 and the uplink PPDU transmission total bandwidth field is set to the other two values ​​(that is, the first and second values), and the corresponding two combinations are reserved combinations (unused).

[0566] In various implementations of Method 3 above, if the station transmits an uplink HE TB PPDU, its bandwidth is the value indicated by the Uplink Bandwidth field. If the station transmits an uplink EHT TB PPDU, its bandwidth is determined based on one or more of the Uplink Bandwidth field, the Uplink PPDU Total Bandwidth field, and the EHT / HE Indication field. For example, the bandwidth may be determined based on the Uplink Bandwidth field and the Uplink PPDU Total Bandwidth field, or based on the Uplink PPDU Total Bandwidth field, or based on the EHT / HE Indication field, or based on the Uplink Bandwidth field, the Uplink PPDU Total Bandwidth field, and the EHT / HE Indication field. For example, when the aforementioned second indication information adopts Implementation a-3 of Method a, the bandwidth of the uplink EHT TB PPDU may be determined based solely on the EHT / HE Indication field.

[0567] Optionally, for various implementations of Method 3 above, when the aforementioned second indication information is implemented using Method C, after receiving the trigger frame, the EHT station may set the bandwidth field of the general signaling field in the preamble of the uplink EHT TB PPDU to the total transmission bandwidth of the uplink PPDU indicated by the uplink PPDU total bandwidth field. This is because in Method C above, the EHT / HE indication field is in the user information field of the trigger frame, and the specific EHT TB PPDU bandwidth cannot be determined based on this field. However, the user information field of the trigger frame contains the RU allocation field. When the EHT station sends the uplink EHT TB PPDU, it sends the uplink EHT TB PPDU on the corresponding resources according to the indication of the RU allocation field.

[0568] Method 4: The first indication information is directly used to indicate the bandwidth of the EHT TB PPDU. The first indication information is carried in the uplink EHT TB PPDU bandwidth field, which occupies 3 bits.

[0569] Implementation 4.1:

[0570] When the value of the uplink EHT TB PPDU bandwidth field is 1, it indicates that the bandwidth of the EHT TB PPDU is 20 MHz;

[0571] When the value of the uplink EHT TB PPDU bandwidth field is the second value, it indicates that the bandwidth of the EHT TB PPDU is 40 MHz;

[0572] When the value of the uplink EHT TB PPDU bandwidth field is the third value, it indicates that the bandwidth of the EHT TB PPDU is 80 MHz;

[0573] When the value of the uplink EHT TB PPDU bandwidth field is the 4th value, it indicates that the bandwidth of the EHT TB PPDU is 160 MHz;

[0574] When the value of the uplink EHT TB PPDU bandwidth field is the 5th value, it indicates that the bandwidth of the EHT TB PPDU is 320 MHz; other values ​​are not used.

[0575] In this embodiment 4.1, the uplink bandwidth extension field occupies 3 bits and can represent a total of 8 values ​​​​from 0 to 7. The first to fifth values ​​can be any one of {0, 1, 2, 3, 4, 5, 6, 7}, and the first value, second value, third value, fourth value, and fifth value are different from each other. For example, the first value is 0, the second value is 1, the third value is 2, the fourth value is 3, and the fifth value is 4. The other values ​​​​(i.e., 5, 6, 7) are reserved.

[0576] Implementation 4.2:

[0577] When the value of the uplink EHT TB PPDU bandwidth field is 1, it indicates that the bandwidth of the EHT TB PPDU is 20 MHz;

[0578] When the value of the uplink EHT TB PPDU bandwidth field is the second value, it indicates that the bandwidth of the EHT TB PPDU is 40 MHz;

[0579] When the value of the uplink EHT TB PPDU bandwidth field is the third value, it indicates that the bandwidth of the EHT TB PPDU is 80 MHz;

[0580] When the value of the uplink EHT TB PPDU bandwidth field is the 4th value, it indicates that the bandwidth of the EHT TB PPDU is 160 MHz;

[0581] When the value of the uplink EHT TB PPDU bandwidth field is the 5th value, it indicates that the bandwidth of the EHT TB PPDU is 320MHz-1;

[0582] When the value of the uplink EHT TB PPDU bandwidth field is the 6th value, it indicates that the bandwidth of the EHT TB PPDU is 320 MHz-2; other values ​​are not used.

[0583] In this embodiment 4.2, the uplink bandwidth extension field occupies 3 bits and can represent a total of 8 values ​​from 0 to 7. The first to sixth values ​​can be any one of {0, 1, 2, 3, 4, 5, 6, 7}, and the first, second, third, fourth, fifth, and sixth values ​​are different from each other. For example, the first value is 0, the second value is 1, the third value is 2, the fourth value is 3, the fifth value is 4, and the sixth value is 5. The other values ​​(i.e., 6 and 7) are reserved.

[0584] It can be seen that the values ​​and meanings of the uplink EHT TB PPDU bandwidth field in the above-mentioned embodiments 4.1 and 4.2 can be summarized as shown in the following Table 10.

[0585] Table 10

[0586]

[0587] In various implementations of method 4 above, if the station transmits an uplink HE TB PPDU, its bandwidth is the value indicated by the uplink bandwidth field. If the station transmits an uplink EHT TB PPDU, its bandwidth is determined based on the uplink EHT TB PPDU bandwidth field.

[0588] The uplink EHT TB PPDU bandwidth field and the uplink bandwidth field are two independent fields. For example, when the uplink EHT TB PPDU bandwidth field is set to the first value (i.e., the corresponding EHT TB PPDU bandwidth is 20MHz), the uplink bandwidth field can be set to any value. To facilitate the implementation of the receiver or to provide more reserved combinations (unused values), it is proposed in embodiment 4.1 or 4.2:

[0589] 1. When the uplink EHT TB PPDU bandwidth field is set to the first value, the uplink EHT TB PPDU bandwidth is 20 MHz, and the uplink bandwidth field needs to be set to one of the four values ​​"0-3", such as 0. Then the uplink EHT TB PPDU bandwidth field is set to the first value and the uplink bandwidth field needs to be set to any of the other three values ​​in the four values ​​"0-3" (such as 1, 2, or 3). The corresponding three value combinations are reserved combinations (unused).

[0590] 2. When the uplink EHT TB PPDU bandwidth field is set to the second value, the uplink EHT TB PPDU bandwidth is 40 MHz, and the uplink bandwidth field needs to be set to one of the four values ​​"0-3", such as 1. Then the uplink EHT TB PPDU bandwidth field is set to the second value and the uplink bandwidth field needs to be set to any of the other three values ​​in the four values ​​"0-3" (such as 0, 2, or 3). The corresponding three value combinations are reserved combinations (unused).

[0591] 3. When the uplink EHT TB PPDU bandwidth field is set to the third value, the uplink EHT TB PPDU bandwidth is 80 MHz, and the uplink bandwidth field needs to be set to one of the four values ​​"0 to 3", such as 2 or 3. Then, when the uplink EHT TB PPDU bandwidth field is set to the third value and the uplink bandwidth field needs to be set to any other value in the four values ​​"0 to 3" (such as any one of 0, 1, and 2, or any one of 0, 1, and 3), the corresponding value combination is a reserved combination (unused).

[0592] or

[0593] When the uplink EHT TB PPDU bandwidth field is set to the third value, the uplink EHT TB PPDU bandwidth is 80 MHz, and the uplink bandwidth field needs to be set to two of the four values ​​"0 to 3", such as 2 and 3. Then the uplink EHT TB PPDU bandwidth field is set to the third value and the uplink bandwidth field needs to be set to the other two values ​​of the four values ​​"0 to 3" (such as 0, 1). The corresponding value combination is reserved (unused).

[0594] 4. When the uplink EHT TB PPDU bandwidth field is set to the 4th value, the uplink EHT TB PPDU bandwidth is 160 MHz, and the uplink bandwidth field needs to be set to one of the four values ​​"0-3", such as 2 or 3. Then the uplink EHT TB PPDU bandwidth field is set to the 4th value and the uplink bandwidth field needs to be set to any one of the other three values ​​in the four values ​​"0-3" (such as any one of 0, 1, and 2, or any one of 0, 1, and 3). The corresponding value combination is reserved (unused).

[0595] or

[0596] When the uplink EHT TB PPDU bandwidth field is set to the 4th value, the uplink EHT TB PPDU bandwidth is 160 MHz, and the uplink bandwidth field needs to be set to two of the four values ​​"0 to 3", such as 2 and 3. Then the uplink EHT TB PPDU bandwidth field is set to the 4th value and the uplink bandwidth field needs to be set to the other two values ​​"0 to 3" (such as 0, 1), and the corresponding combination is a reserved combination (unused).

[0597] In Example 4.1:

[0598] 5. When the uplink EHT TB PPDU bandwidth field is set to the 5th value, the uplink EHT TB PPDU bandwidth is 320 MHz, and the uplink bandwidth field needs to be set to one of the four values ​​"0-3", such as 2 or 3. Then, when the uplink EHT TB PPDU bandwidth field is set to the 5th value and the uplink bandwidth field needs to be set to any other value in the four values ​​"0-3" (such as any one of 0, 1, and 2, or any one of 0, 1, and 3), the corresponding value combination is reserved (unused).

[0599] or

[0600] When the uplink EHT TB PPDU bandwidth field is set to the 5th value, the uplink EHT TB PPDU bandwidth is 320 MHz, and the uplink bandwidth field needs to be set to two values ​​from the 4 values ​​"0 to 3", such as 2 and 3. Then, when the uplink EHT TB PPDU bandwidth field is set to the 5th value and the uplink bandwidth field needs to be set to other values ​​from the 4 values ​​"0 to 3" (such as 0, 1), the corresponding value combination is reserved (unused).

[0601] In Example 4.2:

[0602] 5. When the uplink EHT TB PPDU bandwidth field is set to the 5th value, the uplink EHT TB PPDU bandwidth is 320MHz-1, and the uplink bandwidth field needs to be set to one of the four values ​​"0-3", such as 2 or 3. Then the uplink EHT TB PPDU bandwidth field is set to the 5th value and the uplink bandwidth field needs to be set to any other value among the four values ​​"0-3". (The corresponding value combination is a reserved combination (unused).

[0603] or

[0604] When the uplink EHT TB PPDU bandwidth field is set to the 5th value, the uplink EHT TB PPDU bandwidth is 320-1MHz, and the uplink bandwidth field needs to be set to two values ​​from the 4 values ​​"0 to 3", such as 2 and 3. Then, when the uplink EHT TB PPDU bandwidth field is set to the 5th value and the uplink bandwidth field needs to be set to other values ​​from the 4 values ​​"0 to 3" (such as 0, 1), the corresponding value combination is reserved (unused).

[0605] 6. When the uplink EHT TB PPDU bandwidth field is set to the 6th value, the uplink EHT TB PPDU bandwidth is 320-2MHz, and the uplink bandwidth field needs to be set to one of the four values ​​"0-3", such as 2 or 3. Then the uplink EHT TB PPDU bandwidth field is set to the 5th value and the uplink bandwidth field needs to be set to any other value among the four values ​​"0-3". The corresponding three combinations are reserved combinations (unused).

[0606] or

[0607] When the uplink EHT TB PPDU bandwidth field is set to the 6th value, the uplink EHT TB PPDU bandwidth is 320-2MHz, and the uplink bandwidth field needs to be set to two values ​​from the 4 values ​​"0 to 3", such as 2 and 3. Then, when the uplink EHT TB PPDU bandwidth field is set to the 5th value and the uplink bandwidth field needs to be set to other values ​​from the 4 values ​​"0 to 3" (such as 0, 1), the corresponding value combination is reserved (unused).

[0608] In order to facilitate the implementation of the receiver, or to provide more reserved combinations or unused values, another implementation method is proposed:

[0609] In Example 4.1 or 4.2:

[0610] 1. When the Uplink Bandwidth field is set to 0 and the Uplink EHT TB PPDU Bandwidth field is set to the first value, the bandwidth of the Uplink EHT TB PPDU is 20MHz. Then the Uplink Bandwidth field is set to 0 and the Uplink EHT TB PPDU Bandwidth field is set to any of the other three values ​​(for example, one of the values ​​2 to 4). The corresponding three combinations are reserved combinations (unused).

[0611] 2. When the Uplink Bandwidth field is set to 1 and the Uplink EHT TB PPDU Bandwidth field is set to the second value, the bandwidth of the Uplink EHT TB PPDU is 40MHz. Then the Uplink Bandwidth field is set to 1 and the Uplink EHT TB PPDU Bandwidth field is set to any of the other three values ​​(for example, one of the 1st, 3rd, and 4th values). The corresponding three combinations are reserved combinations (unused).

[0612] In Example 4.1:

[0613] 3. When the uplink bandwidth field needs to be set to 2, the uplink EHT TB PPDU bandwidth field is set to the third value. At this time, the bandwidth of the uplink EHT TB PPDU is 80 MHz.

[0614] When the uplink bandwidth field needs to be set to 2, the uplink EHT TB PPDU bandwidth field is set to the 4th value. At this time, the bandwidth of the uplink EHT TB PPDU is 160 MHz.

[0615] When the uplink bandwidth field needs to be set to 2, the uplink EHT TB PPDU bandwidth field is set to the 5th value. At this time, the bandwidth of the uplink EHT TB PPDU is 320 MHz, or the combination is reserved (unused).

[0616] Then the uplink bandwidth field needs to be set to 2 and the uplink EHT TB PPDU bandwidth field is set to any one of the other two values ​​(that is, one of the first and second values). The corresponding two combinations are reserved combinations (unused).

[0617] 4. When the uplink bandwidth field needs to be set to 3, the uplink EHT TB PPDU bandwidth field is set to the third value. At this time, the bandwidth of the uplink EHT TB PPDU is 80 MHz.

[0618] When the uplink bandwidth field needs to be set to 3, the uplink EHT TB PPDU bandwidth field is set to the 4th value. At this time, the bandwidth of the uplink EHT TB PPDU is 160 MHz.

[0619] When the uplink bandwidth field needs to be set to 3, the uplink EHT TB PPDU bandwidth field is set to the 5th value. At this time, the bandwidth of the uplink EHT TB PPDU is 320 MHz, or the combination is reserved (unused).

[0620] Then the uplink bandwidth field needs to be set to 3 and the uplink EHT TB PPDU bandwidth field needs to be set to any one of the other two values ​​(that is, one of the first and second values). The corresponding two combinations are reserved combinations (unused).

[0621] In Example 4.2:

[0622] 3. When the uplink bandwidth field needs to be set to 2, the uplink EHT TB PPDU bandwidth field is set to the third value. At this time, the bandwidth of the uplink EHT TB PPDU is 80 MHz.

[0623] When the uplink bandwidth field needs to be set to 2, the uplink EHT TB PPDU bandwidth field is set to the 4th value. At this time, the bandwidth of the uplink EHT TB PPDU is 160 MHz.

[0624] When the uplink bandwidth field needs to be set to 2, the uplink EHT TB PPDU bandwidth field is set to the 5th value. At this time, the bandwidth of the uplink EHT TB PPDU is 320MHz-1, or the combination is reserved (unused).

[0625] When the uplink bandwidth field needs to be set to 2, the uplink EHT TB PPDU bandwidth field is set to the 6th value. At this time, the bandwidth of the uplink EHT TB PPDU is 320MHz-2, or the combination is reserved (unused).

[0626] Then the uplink bandwidth field needs to be set to 2 and the uplink EHT TB PPDU bandwidth field is set to one of the other two values ​​(that is, one of the first and second values), and the corresponding two combinations are reserved combinations (unused).

[0627] 4. When the uplink bandwidth field needs to be set to 3, the uplink EHT TB PPDU bandwidth field is set to the third value. At this time, the bandwidth of the uplink EHT TB PPDU is 80 MHz.

[0628] When the uplink bandwidth field needs to be set to 3, the uplink EHT TB PPDU bandwidth field is set to the 4th value. At this time, the bandwidth of the uplink EHT TB PPDU is 160 MHz.

[0629] When the uplink bandwidth field needs to be set to 3, the uplink EHT TB PPDU bandwidth field is set to the 5th value. At this time, the bandwidth of the uplink EHT TB PPDU is 320MHz-1, or the combination is reserved (unused).

[0630] When the uplink bandwidth field needs to be set to 3, the uplink EHT TB PPDU bandwidth field is set to the 6th value. At this time, the bandwidth of the uplink EHT TB PPDU is 320MH-2, or the combination is reserved (unused).

[0631] Then the uplink bandwidth field needs to be set to 3 and the uplink EHT TB PPDU bandwidth field is set to one of the other two values ​​(that is, one of the 1st and 2nd values). The corresponding two combinations are reserved combinations (unused).

[0632] The above content elaborates on the method provided by the present application. In order to facilitate better implementation of the above scheme of the embodiment of the present application, the embodiment of the present application also provides corresponding devices or equipment.

[0633] The embodiment of the present application can divide the functional modules of AP and STA according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above-mentioned integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. There may be other division methods in actual implementation. The communication device of the embodiment of the present application will be described in detail below with reference to Figures 12 and 13. The communication device is an access point or a station. Further, the communication device can be a device in the AP; or the communication device is a device in the STA.

[0634] In the case of an integrated unit, see Figure 12, which is a schematic diagram of the structure of a communication device 1 provided in an embodiment of the present application. The communication device 1 can be an AP or a chip within the AP, such as a Wi-Fi chip. As shown in Figure 12, the communication device 1 includes a processing unit 11 and a transceiver unit 12.

[0635] In the first design, the processing unit 11 is used to generate a trigger frame, which includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the total transmission bandwidth of the uplink physical layer protocol data unit PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate the distribution of the trigger-based high-efficiency physical layer protocol data unit HE TB PPDU and / or the extremely high throughput physical layer protocol data unit EHT TB PPDU within the total transmission bandwidth of the uplink PPDU; the transceiver unit 12 is used to send the trigger frame.

[0636] In the second design, the processing unit 11 is used to generate a trigger frame, which includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the total transmission bandwidth of the uplink physical layer protocol data unit PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate whether the site transmits HE TB PPDU or EHT TB PPDU; the transceiver unit 12 is used to send the trigger frame.

[0637] Optionally, in the first and second designs above, the transceiver unit 12 is further configured to receive a HE TB PPDU or an EHT TB PPDU;

[0638] The bandwidth field of the general signaling field in the preamble of the EHT TB PPDU is determined based on one or more of the first indication information, the uplink bandwidth field, and the second indication information.

[0639] In the third design, the processing unit 11 is configured to generate a trigger frame, the trigger frame including first indication information, the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicating the bandwidth of an extremely high throughput physical layer data protocol unit (EHT TB PPDU), and the uplink bandwidth field indicating the bandwidth of the HE TB PPDU; the trigger frame also includes second indication information, the second indication information being used to indicate the frequency domain fragmentation of the EHT TB PPDU and / or the frequency domain fragmentation of the HE TB PPDU, the bandwidth of the EHT TB PPDU being the bandwidth jointly indicated by the first indication information and the uplink bandwidth field, and the bandwidth of the HE TB PPDU being the bandwidth of the uplink bandwidth field; and the transceiver unit 12 is configured to send the trigger frame.

[0640] In the fourth design, the processing unit 11 is used to generate a trigger frame, which includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the bandwidth of the EHT TB PPDU, and the uplink bandwidth field indicates the bandwidth of the HE TB PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate whether the site transmits the HE TB PPDU or the EHT TB PPDU; the transceiver unit 12 is used to send the trigger frame.

[0641] Optionally, in the third and fourth designs above, the transceiver unit 12 is also used to receive HE TB PPDU or EHT TB PPDU; wherein the bandwidth field of the general signaling field in the preamble code of the EHT TB PPDU is set to the value jointly indicated by the first indication information and the uplink bandwidth field.

[0642] It should be understood that the communication device 1 can execute the aforementioned method embodiment, and the above operations or functions of each unit in the communication device 1 are respectively for implementing the corresponding operations of the AP in the aforementioned method embodiment. For the sake of brevity, they will not be repeated here.

[0643] 13 is a schematic diagram of the structure of a communication device 2 provided in an embodiment of the present application. The communication device 2 may be a STA or a chip within the STA, such as a Wi-Fi chip. As shown in FIG13 , the communication device 2 includes a transceiver unit 21 and a processing unit 22.

[0644] In the first design, the transceiver unit 21 is used to receive a trigger frame, which includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the total transmission bandwidth of the uplink PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate the distribution of the triggered high-efficiency physical layer protocol data unit HE TB PPDU and / or the extremely high throughput physical layer protocol data unit EHT TB PPDU within the total transmission bandwidth of the uplink PPDU; the processing unit 22 is used to parse the trigger frame.

[0645] In the second design, the transceiver unit 21 is used to receive a trigger frame, which includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the total transmission bandwidth of the uplink PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate whether the site transmits HE TB PPDU or EHT TB PPDU; the processing unit 22 is used to parse the trigger frame.

[0646] In the first and second designs above, the processing unit 22 is further used to generate an HE TB PPDU or an EHT TB PPDU, and the bandwidth field of the general signaling field in the preamble code of the EHT TB PPDU is determined based on one or more of the first indication information, the uplink bandwidth field, and the second indication information; the transceiver unit 21 is further used to send the generated HE TB PPDU or the EHT TB PPDU according to the indication of the second indication information.

[0647] In a third design, the transceiver unit 21 is configured to receive a trigger frame, where the trigger frame includes first indication information, where the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the bandwidth of the EHT TB PPDU, and the uplink bandwidth field indicates the bandwidth of the HE TB PPDU; the trigger frame also includes second indication information, where the second indication information is used to indicate the frequency domain fragmentation of the EHT TB PPDU and / or the frequency domain fragmentation of the HE TB PPDU, the bandwidth of the EHT TB PPDU is the bandwidth jointly indicated by the first indication information and the uplink bandwidth field, and the bandwidth of the HE TB PPDU is the bandwidth of the uplink bandwidth field; and the processing unit 22 is configured to parse the trigger frame.

[0648] In the fourth design, the transceiver unit 21 is used to receive a trigger frame, which includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the bandwidth of the EHT TB PPDU, and the uplink bandwidth field indicates the bandwidth of the HE TB PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate whether the site transmits the HE TB PPDU or the EHT TB PPDU; the processing unit 22 is used to parse the trigger frame.

[0649] In the third and fourth designs above, the processing unit 22 is further used to generate an HE TB PPDU or an EHT TB PPDU, and the bandwidth field of the general signaling field in the preamble of the EHT TB PPDU is set to the value jointly indicated by the first indication information and the uplink bandwidth field; the transceiver unit 21 is further used to send the generated HE TB PPDU or the EHT TB PPDU according to the indication of the second indication information.

[0650] It should be understood that the communication device 2 can execute the aforementioned method embodiment, and the above operations or functions of each unit in the communication device 2 are respectively for implementing the corresponding operations of the STA in the aforementioned method embodiment. For the sake of brevity, they are not repeated here.

[0651] The above describes the AP and STA according to the embodiments of the present application. The following describes possible product forms of the AP and STA. It should be understood that any product that possesses the functions of the AP described in Figure 12 and any product that possesses the functions of the STA described in Figure 13 fall within the scope of protection of the embodiments of the present application. It should also be understood that the following description is merely illustrative and does not limit the product forms of the AP and STA according to the embodiments of the present application to these examples.

[0652] As a possible product form, the AP and STA described in the embodiments of the present application can be implemented by a general bus architecture.

[0653] The AP includes a processor and a transceiver internally connected to and communicating with the processor.

[0654] In one design, a processor is used to generate a trigger frame, wherein the trigger frame includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the total transmission bandwidth of the uplink physical layer protocol data unit PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate the distribution of the trigger-based high-efficiency physical layer protocol data unit HE TB PPDU and / or the extremely high throughput physical layer protocol data unit EHT TB PPDU within the total transmission bandwidth of the uplink PPDU; the transceiver is used to send the trigger frame.

[0655] In one design, a processor is used to generate a trigger frame, wherein the trigger frame includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the total transmission bandwidth of the uplink physical layer protocol data unit PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate whether the site transmits HE TB PPDU or EHT TB PPDU; the transceiver is used to send the trigger frame.

[0656] In one design, a processor is configured to generate a trigger frame, the trigger frame including first indication information, the first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicating the bandwidth of an extremely high throughput physical layer data protocol unit (EHT TB PPDU), the uplink bandwidth field indicating the bandwidth of the HE TB PPDU; the trigger frame also includes second indication information, the second indication information being used to indicate frequency domain fragmentation of the EHT TB PPDU and / or frequency domain fragmentation of the HE TB PPDU, the bandwidth of the EHT TB PPDU being the bandwidth jointly indicated by the first indication information and the uplink bandwidth field, the bandwidth of the HE TB PPDU being the bandwidth of the uplink bandwidth field; and a transceiver is configured to send the trigger frame.

[0657] In one design, a processor is configured to generate a trigger frame, the trigger frame including first indication information, the first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicating the bandwidth of an EHT TB PPDU, the uplink bandwidth field indicating the bandwidth of an HE TB PPDU; the trigger frame also includes second indication information, the second indication information being used to indicate whether the site transmits an HE TB PPDU or an EHT TB PPDU; and a transceiver is configured to send the trigger frame.

[0658] The STA includes a processor and a transceiver connected to communicate with the processor.

[0659] In one design, a transceiver is used to receive a trigger frame, wherein the trigger frame includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the total transmission bandwidth of the uplink PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate the distribution of the triggered high-efficiency physical layer protocol data unit HE TB PPDU and / or the extremely high throughput physical layer protocol data unit EHT TB PPDU within the total transmission bandwidth of the uplink PPDU; the processor is used to parse the trigger frame.

[0660] In one design, a transceiver is used to receive a trigger frame, which includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the total transmission bandwidth of the uplink PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate whether the site transmits HE TB PPDU or EHT TB PPDU; the processor is used to parse the trigger frame.

[0661] In one design, a transceiver is configured to receive a trigger frame, the trigger frame including first indication information, the first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicating the bandwidth of an EHT TB PPDU, the uplink bandwidth field indicating the bandwidth of an HE TB PPDU; the trigger frame also includes second indication information, the second indication information being used to indicate the frequency domain fragmentation of the EHT TB PPDU and / or the frequency domain fragmentation of the HE TB PPDU, the bandwidth of the EHT TB PPDU being the bandwidth jointly indicated by the first indication information and the uplink bandwidth field, the bandwidth of the HE TB PPDU being the bandwidth of the uplink bandwidth field; and a processor is configured to parse the trigger frame.

[0662] In one design, a processor is configured to receive a trigger frame, the trigger frame including first indication information, the first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicating the bandwidth of an EHT TB PPDU, the uplink bandwidth field indicating the bandwidth of an HE TB PPDU; the trigger frame also includes second indication information, the second indication information being used to indicate whether the site transmits an HE TB PPDU or an EHT TB PPDU; and a transceiver is configured to parse the trigger frame.

[0663] As a possible product form, the AP and STA described in the embodiments of the present application can be implemented by a general-purpose processor.

[0664] The general processor for implementing the AP includes a processing circuit and an input and output interface connected to and communicating with the processing circuit.

[0665] In one design, a processing circuit is used to generate a trigger frame, wherein the trigger frame includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the total transmission bandwidth of the uplink physical layer protocol data unit PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate the distribution of the trigger-based high-efficiency physical layer protocol data unit HE TB PPDU and / or extremely high throughput physical layer protocol data unit EHT TB PPDU within the total transmission bandwidth of the uplink PPDU; an input and output interface is used to send the trigger frame.

[0666] In one design, a processing circuit is configured to generate a trigger frame, wherein the trigger frame includes first indication information, wherein the first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicate a total transmission bandwidth of an uplink physical layer protocol data unit (PPDU); the trigger frame also includes second indication information, wherein the second indication information is used to indicate whether the station transmits an HE TB PPDU or an EHT TB PPDU; and an input / output interface is configured to send the trigger frame.

[0667] In one design, a processing circuit is configured to generate a trigger frame, the trigger frame including first indication information, the first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicating the bandwidth of an extremely high throughput physical layer data protocol unit (EHT TB PPDU), the uplink bandwidth field indicating the bandwidth of the HE TB PPDU; the trigger frame also including second indication information, the second indication information being used to indicate frequency domain fragmentation of the EHT TB PPDU and / or frequency domain fragmentation of the HE TB PPDU, the bandwidth of the EHT TB PPDU being the bandwidth jointly indicated by the first indication information and the uplink bandwidth field, the bandwidth of the HE TB PPDU being the bandwidth of the uplink bandwidth field; and an input / output interface being configured to send the trigger frame.

[0668] In one design, a processing circuit is configured to generate a trigger frame, the trigger frame including first indication information, the first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicating the bandwidth of an EHT TB PPDU, the uplink bandwidth field indicating the bandwidth of an HE TB PPDU; the trigger frame also including second indication information, the second indication information being used to indicate whether a site transmits an HE TB PPDU or an EHT TB PPDU; and an input / output interface is configured to send the trigger frame.

[0669] The general processing circuit for implementing STA includes a processing circuit and an input and output interface connected to and communicating with the internal portion of the processing circuit.

[0670] In one design, an input-output interface is used to receive a trigger frame, wherein the trigger frame includes first indication information, and the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the total transmission bandwidth of the uplink PPDU; the trigger frame also includes second indication information, and the second indication information is used to indicate the distribution of the triggered high-efficiency physical layer protocol data unit HE TB PPDU and / or the extremely high throughput physical layer protocol data unit EHT TB PPDU within the total transmission bandwidth of the uplink PPDU; the processing circuit is used to parse the trigger frame.

[0671] In one design, an input / output interface is configured to receive a trigger frame, wherein the trigger frame includes first indication information, wherein the first indication information and the uplink bandwidth field in the common information field of the trigger frame jointly indicate the total transmission bandwidth of the uplink PPDU; the trigger frame also includes second indication information, wherein the second indication information is used to indicate whether the site transmits an HE TB PPDU or an EHT TB PPDU; and a processing circuit is configured to parse the trigger frame.

[0672] In one design, an input / output interface is configured to receive a trigger frame, wherein the trigger frame includes first indication information, where the first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicate the bandwidth of an EHT TB PPDU, where the uplink bandwidth field indicates the bandwidth of an HE TB PPDU; the trigger frame also includes second indication information, where the second indication information is used to indicate frequency domain fragmentation of the EHT TB PPDU and / or frequency domain fragmentation of the HE TB PPDU, where the bandwidth of the EHT TB PPDU is the bandwidth jointly indicated by the first indication information and the uplink bandwidth field, where the bandwidth of the HE TB PPDU is the bandwidth of the uplink bandwidth field; and a processing circuit is configured to parse the trigger frame.

[0673] In one design, a processing circuit is configured to receive a trigger frame, the trigger frame including first indication information, the first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicating the bandwidth of an EHT TB PPDU, the uplink bandwidth field indicating the bandwidth of an HE TB PPDU; the trigger frame also including second indication information, the second indication information being used to indicate whether a site transmits an HE TB PPDU or an EHT TB PPDU; and an input / output interface is configured to parse the trigger frame.

[0674] It should be understood that the communication devices in the various product forms described above have any functions of the AP or STA in the above method embodiments, which will not be described in detail here.

[0675] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program code is stored. When the processor executes the computer program code, the electronic device executes the method in any of the aforementioned embodiments.

[0676] An embodiment of the present application further provides a computer program product, which, when executed on a computer, enables the computer to execute the method in any of the aforementioned embodiments.

[0677] An embodiment of the present application also provides a communication device, which can exist in the form of a chip product. The structure of the device includes a processor and an interface circuit. The processor is used to communicate with other devices through a receiving circuit, so that the device executes the method in any of the aforementioned embodiments.

[0678] An embodiment of the present application further provides a wireless communication system, including an AP and a STA, which can execute the method in any of the aforementioned embodiments.

[0679] The steps of the method or algorithm described in conjunction with the disclosure of this application can be implemented in hardware or by executing software instructions by a processor. The software instructions can be composed of corresponding software modules, which can be stored in random access memory (RAM), flash memory, erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), registers, hard disks, mobile hard disks, read-only compact disks (CD-ROMs), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a core network interface device. Of course, the processor and the storage medium can also exist in the core network interface device as discrete components.

[0680] Those skilled in the art will appreciate that, in one or more of the examples above, the functions described herein can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer-readable storage media and communication media, wherein communication media include any medium that facilitates the transmission of a computer program from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0681] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of this application. It should be understood that the above description is only the specific implementation methods of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of this application should be included in the scope of protection of this application.

Claims

1. A method for indicating uplink bandwidth of a Physical Layer Protocol Data Unit (PPDU), characterized in that, it includes: An access point (AP) generates a trigger frame, and the trigger frame includes an EHT / HE indication field, where the EHT / HE indication field is used to indicate that a station (STA) transmits a HE TB PPDU or an EHT TB PPDU; The AP sends the trigger frame.

2. A method for indicating uplink bandwidth of a Physical Layer Protocol Data Unit (PPDU), characterized in that, it includes: A station (STA) receives a trigger frame, and the trigger frame includes an EHT / HE indication field, where the EHT / HE indication field is used to indicate that the STA transmits a HE TB PPDU or an EHT TB PPDU; The STA determines whether to transmit a HE TB PPDU or an EHT TB PPDU according to the EHT / HE indication field.

3. The method according to claim 1 or 2, characterized in that, The STA is the STA assigned to the frequency domain where the primary 160 MHz is located.

4. The method according to any one of claims 1 - 3, characterized in that, The length of the EHT / HE indication field is 1 bit.

5. The method according to claim 1 or 2, characterized in that, The STA assigned to the frequency domain where the secondary 160 MHz is located transmits an EHT TB PPDU.

6. The method according to any one of claims 1 - 5, characterized in that, The EHT / HE indication field and the resource allocation field in the user information field of the trigger frame jointly indicate that the STA transmits a HE TB PPDU or an EHT TB PPDU on the corresponding resource block; the resource allocation field includes 8 bits from the 13th bit to the 20th bit and the 40th bit of the user information field.

7. The method according to any one of claims 1 - 5, characterized in that, The EHT / HE indication field and the resource allocation field in the user information field of the trigger frame jointly indicate that the user information field is a HE user information field or an EHT user information field; the resource allocation field includes 8 bits from the 13th bit to the 20th bit and the 40th bit of the user information field.

8. The method according to any one of claims 1 - 7, characterized in that, The EHT / HE indication field is located in the reserved bits of the common information field of the trigger frame.

9. The method according to any one of claims 1 - 8, characterized in that, The trigger frame further includes one or more of a HE user information field and an EHT user information field, and the HE user information field and the EHT user information field have the same length.

10. A communication device, characterized in that, it includes units or modules for executing the method according to any one of claims 1 - 9.

11. A communication device, characterized in that, It includes a processor and a transceiver. The processor is used to generate a trigger frame, and the trigger frame includes an EHT / HE indication field, where the EHT / HE indication field is used to indicate whether the station transmits an HE TB PPDU or an EHT TB PPDU; The transceiver is used to send the trigger frame.

12. A communication device, characterized in that, it includes a processor and a transceiver. The transceiver is used to receive a trigger frame, and the trigger frame includes an EHT / HE indication field, where the EHT / HE indication field is used to indicate whether the station transmits an HE TB PPDU or an EHT TB PPDU; The processor is used to determine whether to transmit an HE TB PPDU or an EHT TB PPDU according to the EHT / HE indication field.

13. A communication device, characterized in that, the communication device is a chip. The communication device includes an input / output interface and a processing circuit. The processing circuit is used to generate a trigger frame, and the trigger frame includes an EHT / HE indication field, where the EHT / HE indication field is used to indicate whether the station transmits an HE TB PPDU or an EHT TB PPDU; the input / output interface is used to send the trigger frame.

14. A communication device, characterized in that, the communication device is a chip. The communication device includes an input / output interface and a processing circuit. The input / output interface is used to receive a trigger frame, and the trigger frame includes an EHT / HE indication field, where the EHT / HE indication field is used to indicate whether the station transmits an HE TB PPDU or an EHT TB PPDU; The processing circuit is used to determine whether to transmit an HE TB PPDU or an EHT TB PPDU according to the EHT / HE indication field.

15. A computer-readable storage medium stores program instructions. When the program instructions run on a computer, the computer is caused to execute the method according to any one of claims 1-9.

16. A computer program product containing program instructions. When the program instructions run on a computer, the computer is caused to execute the method according to any one of claims 1-9.

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