CN114501638A

CN114501638A - PPDU uplink bandwidth indication method and related device

Info

Publication number: CN114501638A
Application number: CN202011469254.XA
Authority: CN
Inventors: 淦明; 李伊青; 刘辰辰; 李云波; 郭宇宸; 于健; 杨讯
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-10-28
Filing date: 2020-12-14
Publication date: 2022-05-13

Abstract

The present application relates to the field of wireless communications, for example, to a wireless local area network supporting 802.11be standard, and in particular, to an uplink bandwidth indication method for PPDU and a related apparatus. The method comprises the following steps: the AP generates and sends a trigger frame, wherein the trigger frame carries first indication information and is used for directly indicating or jointly indicating the bandwidth of an EHT TB PPDU or the total transmission bandwidth of an uplink PPDU; and carrying second indication information for indicating the distribution of the HE TB PPDU and/or the EHT TB PPDU in the total transmission bandwidth of the uplink PPDU, or directly indicating whether the EHT station transmits the HE TB PPDU or the EHT TB PPDU. By implementing the embodiment of the application, the trigger frame has the capability of triggering the EHT site to transmit the uplink data on the bandwidth larger than 160MHz on the premise of ensuring the compatibility of the trigger frame.

Description

PPDU uplink bandwidth indication method and related device

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to an uplink bandwidth indication method and a related apparatus for a physical layer protocol data unit PPDU.

Background

With the development of the mobile internet and the popularization of intelligent terminals, data traffic is rapidly increasing, and the demand of users for communication service quality is also increasing, and it has been difficult for the Institute of Electrical and Electronics Engineers (IEEE) 802.11ax standard to meet the user demand in terms of large throughput, low jitter, low delay, and the like. Therefore, there is an urgent need to develop a next generation Wireless Local Area Network (WLAN) technology, i.e., IEEE 802.11be standard or an Extra High Throughput (EHT) standard or Wi-Fi7 standard. Unlike IEEE 802.11ax, IEEE 802.11be will employ very large bandwidths, e.g., 320MHz, to achieve ultra-high transmission rates and scenarios supporting ultra-dense users. Hereinafter, a station supporting the 802.11ax standard but not supporting the 802.11be standard is referred to as a High Efficiency (HE) station, and a station supporting the 802.11be standard is referred to as an EHT station.

Generally, a Station (STA) needs to obtain a transmission opportunity (TXOP) through channel contention and then perform uplink data transmission, for example, perform channel contention based on an Enhanced Distributed Channel Access (EDCA) mode to obtain the transmission opportunity. IEEE 802.11ax introduces a trigger frame-based uplink scheduling transmission method, which schedules one or more stations for uplink data transmission through a trigger frame (trigger frame) sent by an Access Point (AP), for example, a scheduling station sends a High Efficiency (HE) physical layer protocol data unit (PPDU). The IEEE 802.11be standard may follow the uplink scheduling transmission method based on the trigger frame in the IEEE 802.11ax, so in order to maintain compatibility, the trigger frame should be used to trigger the HE station and the EHT station to perform uplink data transmission simultaneously. Since 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 160MHz at the maximum, and the maximum transmission bandwidth supported by the 802.11be standard is 320 MHz. Therefore, in the 802.11be standard, in order to realize transmission with larger bandwidth, the trigger frame should be available for triggering the EHT station to perform uplink data transmission on the bandwidth larger than 160 MHz.

Therefore, how to enable the trigger frame to have the capability of enabling the EHT trigger station to perform uplink data transmission on a bandwidth greater than 160MHz on the premise of ensuring the compatibility of the trigger frame is an urgent problem to be solved in the industry.

Disclosure of Invention

The embodiment of the application provides a PPDU uplink bandwidth indication method and a related device, which can multiplex an 802.11ax trigger frame to trigger an EHT station to perform uplink data transmission on a bandwidth larger than 160MHz, do not affect an HE station to receive the trigger frame, and do not need to redesign a new trigger frame to schedule the EHT station to perform uplink data transmission, so that the trigger frame has the capability of triggering the EHT station to perform uplink data transmission on the bandwidth larger than 160MHz on the premise of ensuring the compatibility of the trigger frame, and can also reduce complexity and save signaling overhead.

The present application is described below in terms of various aspects, it being understood that the following embodiments and advantages of the various aspects may be referred to one another.

In a first aspect, the present application provides a method for indicating an uplink bandwidth of a PPDU, where the method includes: the AP generates and sends a trigger frame, wherein the trigger frame comprises first indication information, and the first indication information and an uplink bandwidth field in a public information field of the trigger frame jointly indicate the total transmission bandwidth of an uplink physical layer protocol data unit (PPDU). The trigger frame further includes second indication information, where the second indication information is used to indicate distribution of the HE TB PPDU and/or the EHT TB PPDU within a total transmission bandwidth of the uplink PPDU.

In a second aspect, the present application provides a method for indicating an uplink bandwidth of a PPDU, where the method includes: the AP generates and sends a trigger frame, wherein the trigger frame comprises first indication information, and the first indication information and an uplink bandwidth field in a public information field of the trigger frame jointly indicate the total transmission bandwidth of an uplink physical layer protocol data unit (PPDU). The trigger frame further includes second indication information indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU.

In combination with the first or second aspect, in one possible design, the method further includes: the AP receives HE TB PPDU or EHT TB PPDU; wherein a bandwidth field of a common signaling field in a 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.

In a third aspect, the present application provides a method for indicating an uplink bandwidth of a PPDU, where the method includes: the STA receives and analyzes a trigger frame, wherein the trigger frame comprises first indication information, and the first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicate the total transmission bandwidth of an uplink PPDU. The trigger frame further includes second indication information for indicating distribution of a trigger-based high efficiency physical layer protocol data unit (HE TB PPDU) and/or an EHT TB PPDU within a total transmission bandwidth of the uplink PPDU.

In a fourth aspect, the present application provides a method for indicating an uplink bandwidth of a PPDU, where the method includes: the STA receives and analyzes a trigger frame, wherein the trigger frame comprises first indication information, and the first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicate the total transmission bandwidth of an uplink PPDU. The trigger frame further includes second indication information indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU.

With reference to the third or fourth aspect, in one possible design, the method further includes: generating an HE TB PPDU or an EHT TB PPDU by the STA, wherein the bandwidth field of a general signaling field in a preamble of the EHT TB PPDU is determined based on one or more items 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 generated EHT TB PPDU according to the indication of the second indication information.

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

In one possible design, the processing unit is configured to generate a trigger frame, where the trigger frame includes first indication information, and 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 further comprises second indication information, wherein the second indication information is used for indicating distribution of a trigger-based high-efficiency physical layer protocol data unit (HE TB PPDU) and/or an extremely high throughput rate physical layer protocol data unit (EHT TB PPDU) in the total transmission bandwidth of the uplink PPDU; the transceiver unit is configured to send the trigger frame.

In one possible design, the processing unit is configured to generate a trigger frame, where the trigger frame includes first indication information, and 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 further includes second indication information for indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU; the transceiver unit is configured to send the trigger frame.

In any possible design, the transceiver unit is further configured to receive an HE TB PPDU or an EHT TB PPDU. Wherein a bandwidth field of a common signaling field in a 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.

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

In one possible design, the processing unit is configured to generate a trigger frame, where the trigger frame includes first indication information, and an uplink bandwidth field in a common information field of the first indication information and the trigger frame jointly indicates a bandwidth of an EHT TB PPDU, and the uplink bandwidth field indicates a bandwidth of an HE TB PPDU; the trigger frame further includes second indication information for indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU; the transceiver unit is configured to send the trigger frame.

Optionally, the transceiver unit is further configured to receive an HE TB PPDU or an EHT TB PPDU; and setting a bandwidth field of a general signaling field in a preamble of the EHT TB PPDU to a value jointly indicated by the first indication information and the uplink bandwidth field.

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

In a possible design, the transceiver unit is configured to receive a trigger frame, where the trigger frame includes first indication information, and 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 PPDU; the trigger frame further comprises second indication information, wherein the second indication information is used for indicating distribution of a trigger-based high-efficiency physical layer protocol data unit (HE TB PPDU) and/or an extremely high throughput rate physical layer protocol data unit (EHT TB PPDU) in the total transmission bandwidth of the uplink PPDU; the processing unit is used for analyzing the trigger frame.

In a possible design, the transceiver unit is configured to receive a trigger frame, where the trigger frame includes first indication information, and 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 PPDU; the trigger frame further includes second indication information for indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU; the processing unit is used for analyzing the trigger frame.

In any one of the above possible designs, the processing unit is further configured to generate an HE TB PPDU or an EHT TB PPDU, where a bandwidth field of a general signaling field in a 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; the transceiver unit is further configured to transmit the generated HE TB PPDU or the generated EHT TB PPDU according to the indication of the second indication information.

In a possible design, the transceiver unit is configured to receive a trigger frame, where the trigger frame includes first indication information, and an uplink bandwidth field in a common information field of the first indication information and the trigger frame jointly indicates a bandwidth of an EHT TB PPDU, and the uplink bandwidth field indicates a bandwidth of an HE TB PPDU; the trigger frame further includes second indication information, where the second indication information is used to indicate a frequency domain slice of an EHT TB PPDU and/or a frequency domain slice of an HE TB PPDU, a bandwidth of the EHT TB PPDU is a bandwidth jointly indicated by the first indication information and the uplink bandwidth field, and a bandwidth of the HE TB PPDU is a bandwidth of the uplink bandwidth field; the processing unit is used for analyzing the trigger frame.

In a possible design, the transceiver unit is configured to receive a trigger frame, where the trigger frame includes first indication information, and an uplink bandwidth field in a common information field of the first indication information and the trigger frame jointly indicates a bandwidth of an EHT TB PPDU, and the uplink bandwidth field indicates a bandwidth of an HE TB PPDU; the trigger frame further includes second indication information for indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU; the processing unit is used for analyzing the trigger frame.

Optionally, the processing unit is further configured to generate an HE TB PPDU or an EHT TB PPDU, where a bandwidth field of a general signaling field in a preamble of the EHT TB PPDU is set to a value jointly indicated by the first indication information and the uplink bandwidth field; the transceiver unit is further configured to transmit the generated HE TB PPDU or the generated EHT TB PPDU according to the indication of the second indication information.

In a seventh aspect, the present application provides a method for indicating an uplink bandwidth of a PPDU, where the method includes: the AP generates and sends a trigger frame, wherein the trigger frame comprises first indication information, the first indication information and an uplink bandwidth field in a public information field of the trigger frame jointly indicate the bandwidth of an EHT TB PPDU (layer data protocol unit), and the uplink bandwidth field indicates the bandwidth of the HE TB PPDU. The trigger frame further includes second indication information, where the second indication information is used to indicate a frequency domain slice of the EHT TB PPDU and/or a frequency domain slice of the HE TB PPDU, a bandwidth of the EHT TB PPDU is a bandwidth jointly indicated by the first indication information and the uplink bandwidth field, and a bandwidth of the HE TB PPDU is a bandwidth of the uplink bandwidth field.

In an eighth aspect, the present application provides a method for indicating an uplink bandwidth of a PPDU, where the method includes: the AP generates and sends a trigger frame, wherein the trigger frame comprises first indication information, the first indication information and an uplink bandwidth field in a public information field of the trigger frame jointly indicate the bandwidth of an EHT TB PPDU (layer data protocol unit), and the uplink bandwidth field indicates the bandwidth of the HE TB PPDU. The trigger frame further includes second indication information indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU.

With reference to the seventh or eighth aspect, in one possible design, the method further includes: the AP receives HE TB PPDU or EHT TB PPDU; and setting a bandwidth field of a general signaling field in a preamble of the EHT TB PPDU to a value jointly indicated by the first indication information and the uplink bandwidth field.

In a ninth aspect, the present application provides a method for indicating an uplink bandwidth of a PPDU, where the method includes: and the STA receives and analyzes a trigger frame, wherein the trigger frame comprises first indication information, the first indication information and an uplink bandwidth field in a public 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 further includes second indication information, where the second indication information is used to indicate a frequency domain slice of an EHT TB PPDU and/or a frequency domain slice of an HE TB PPDU, a bandwidth of the EHT TB PPDU is a bandwidth jointly indicated by the first indication information and the uplink bandwidth field, and a bandwidth of the HE TB PPDU is a bandwidth of the uplink bandwidth field

In a tenth aspect, the present application provides a method for indicating an uplink bandwidth of a PPDU, where the method includes: and the STA receives and analyzes a trigger frame, wherein the trigger frame comprises first indication information, the first indication information and an uplink bandwidth field in a public 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 further includes second indication information, where the second indication information is used to indicate whether the station transmits an HE TB PPDU or an EHT TB PPDU.

With reference to the ninth or tenth aspect, in one possible design, the method further includes: generating an HE TB PPDU or an EHT TB PPDU by the STA, wherein a bandwidth field of a general signaling field in a preamble of the EHT TB PPDU is set as a value indicated by the combination of the first indication information and the uplink bandwidth field; and the STA sends the generated HE TB PPDU or the generated EHT TB PPDU according to the indication of the second indication information.

In an eleventh aspect, the present application provides a communication device, in particular an AP, comprising a processor and a transceiver. The processor and the transceiver are configured to perform the method of the first aspect, the second aspect, the seventh aspect, or the eighth aspect.

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 perform the method of the third aspect, the fourth aspect, the ninth aspect, or the tenth aspect.

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

In a fourteenth aspect, the present application provides a computer-readable storage medium having stored therein program instructions that, when run on a computer, cause the computer to perform the method of any of the above first to fourth aspects, or any of the above seventh to tenth aspects.

In a fifteenth aspect, the present application provides a computer program product comprising program instructions which, when run on a computer, cause the computer to perform the method of any one of the first to fourth aspects above, or any one of the seventh to tenth aspects above.

By implementing the embodiment of the application, on one hand, the 802.11ax trigger frame can be multiplexed to trigger the EHT site to perform uplink data transmission on the bandwidth larger than 160MHz, so that the trigger frame has the capability of triggering the EHT site to perform uplink data transmission on the bandwidth larger than 160MHz on the premise of ensuring the compatibility of the trigger frame; on the other hand, the HE site is not influenced to receive the trigger frame, and a new trigger frame does not need to be redesigned to schedule the EHT site to carry out uplink data transmission, so that the complexity can be reduced, and the signaling overhead can be saved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below.

Fig. 1 is a schematic architecture diagram of a wireless communication system according to an embodiment of the present application;

fig. 2a is a schematic structural diagram of an access point provided in an embodiment of the present application;

fig. 2b is a schematic structural diagram of a station provided in an embodiment of the present application;

fig. 3 is a schematic diagram illustrating division of frequency domain slices in a 320MHz channel according to an embodiment of the present application;

FIG. 4 is a schematic flow chart of a method for trigger frame based uplink scheduling transmission in the 802.11ax standard;

FIG. 5a is a diagram of a frame format of a trigger frame in the 802.11ax standard;

FIG. 5b is a frame format diagram of the common information field and the user information field in the trigger frame of the 802.11ax standard;

fig. 6 is a schematic flowchart of a PPDU uplink bandwidth indication method according to an embodiment of the present application;

fig. 7 is a schematic diagram of a frame structure of a first user information field according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of an uplink multi-user PPDU provided in the embodiment of the present application;

FIG. 9 is a schematic diagram of the division of 320MHz channels in the 6GHz band;

fig. 10a is a timing diagram illustrating that an AP triggers a station to perform uplink data transmission in example 1.1;

fig. 10b is a timing diagram illustrating the AP triggering the station to perform uplink data transmission in example 1.2;

fig. 10c is a timing diagram illustrating the AP triggering the station to perform uplink data transmission in example 1.3;

fig. 10d is a timing diagram illustrating the AP triggering the station to perform uplink data transmission in example 1.4;

fig. 10e is a timing diagram illustrating the AP triggering the station to perform uplink data transmission in example 1.5;

fig. 11 is a timing diagram illustrating the AP triggering the station to perform uplink data transmission in example 2.5;

fig. 12 is a schematic structural diagram of a communication device 1 according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a communication device 2 according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

In order to facilitate understanding of the providing method of the embodiments of the present application, a system architecture and/or an application scenario of the method provided by the embodiments of the present application will be described below. It can be understood that the system architecture and/or scenario described in the embodiment of the present application are for more clearly illustrating the technical solutions of the embodiment of the present application, and do not constitute a limitation on the technical solutions provided in the embodiment of the present application.

The embodiment of the application provides a PPDU uplink bandwidth indication method, which can multiplex a 802.11ax trigger frame to trigger an EHT station to perform uplink data transmission on a bandwidth larger than 160MHz, does not affect an HE station to receive the trigger frame, and does not need to redesign a new trigger frame to schedule the EHT station to perform uplink data transmission, so that the trigger frame has an ability to trigger the EHT station to perform uplink data transmission on the bandwidth larger than 160MHz on the premise of ensuring the compatibility of the trigger frame, and can also reduce complexity and save signaling overhead. The uplink bandwidth indication method of the PPDU can be applied to a wireless communication system, such as a wireless local area network system, and can be implemented by a communication device in the wireless communication system or a chip or a processor in the communication device. The communication device may be an access point device or a station device; the communication device may also be a wireless communication device that supports multiple links for transmission in parallel, for example, the communication device may be referred to as a multi-link device (MLD) or a multi-band device. The multi-link device has higher transmission efficiency and greater throughput than a communication device supporting only a single link transmission.

The PPDU uplink bandwidth indication method provided by the embodiment of the application can be applied to a scene in which the AP communicates with one or more STAs, can also be applied to a scene in which the AP communicates with the AP, and is also applicable to a scene in which the STAs communicate with the STAs. Taking a communication scenario between the AP and the STA as an example, referring to fig. 1, fig. 1 is a schematic architecture diagram of a wireless communication system provided in an embodiment of the present application. As shown in fig. 1, the wireless communication system may include one or more APs (e.g., AP1 or AP2 in fig. 1) and one or more STAs (e.g., STA1, STA2, or STA3 in fig. 1). The AP and the STA support a WLAN communication protocol, which may include IEEE 802.11be (or Wi-Fi7, EHT protocol), and may further include IEEE 802.11ax, IEEE 802.11ac, and the like. Of course, as the communication technology is continuously developed and developed, 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 WLAN, or a chip or a processing system installed in the AP or STA.

An access point (e.g., AP1 or AP2 of fig. 1) is a device with wireless communication capabilities, supports communications using WLAN protocols, and has the capability to communicate with other devices (e.g., stations or other access points) in a WLAN network, but may also have the capability to communicate with other devices. In a WLAN system, an access point may be referred to as an access point station (AP STA). The apparatus with wireless communication function may be a device of a whole machine, and may also be a chip or a processing system installed in the device of the whole machine, and the device installed with the chip or the processing system may implement the method and function of the embodiment of the present application under the control of the chip or the processing system. The AP in the embodiment of the present application is a device for providing services to the STA, and may support 802.11 series protocols. For example, an AP may be a communication entity such as a communication server, router, switch, bridge, etc.; the AP may include various macro base stations, micro base stations, relay stations, and the like, and of course, the AP may also be a chip and a processing system in these various devices, so as to implement the method and the function of the embodiment of the present application.

A station (e.g., STA1 or STA2 or STA3 in fig. 1) is a device with wireless communication capabilities that supports communication using WLAN protocols and has the capability to communicate with other stations or access points in a WLAN network. In a WLAN system, a station may be referred to as a non-access point station (non-AP STA). For example, the STA is any user communication device that allows a user to communicate with the AP and further communicate with the WLAN, the apparatus with wireless communication function may be a device of a whole machine, and may also be a chip or a processing system installed in the device of the whole machine, and the device installed with the chip or the processing system may implement the method and function of the embodiment of the present application under the control of the chip or the processing system. For example, the STA may be a tablet, a desktop, a laptop, a notebook, an Ultra-mobile Personal Computer (UMPC), a handheld Computer, a netbook, a Personal Digital Assistant (PDA), a mobile phone, or other network-enabled user equipment, or a node of the internet of things in the internet of things, or a vehicle-mounted communication device in the internet of things, or an entertainment device, a game device or system, a global positioning system device, or the like, and may also be a chip and a processing system in these terminals.

The WLAN system can provide high-rate low-delay transmission, and with the continuous evolution of WLAN application scenarios, the WLAN system will be applied to more scenarios or industries, for example, the internet of things industry, the car networking industry or the banking industry, the enterprise office, the stadium exhibition hall, the concert hall, the hotel room, the dormitory, the ward, the classroom, the business supermarket, the square, the street, the generation workshop, the warehouse, and the like. Of course, the devices (such as access points or stations) supporting WLAN communication may be sensor nodes (such as smart water meters, smart electric meters, smart air detection nodes) in smart cities, smart devices (such as smart cameras, projectors, display screens, televisions, sound equipment, refrigerators, washing machines, etc.) in smart homes, nodes in internet of things, entertainment terminals (such as wearable devices like AR, VR), smart devices (such as printers, projectors, loudspeakers, sound equipment, etc.) in smart offices, car networking devices in car networking, infrastructure in daily life scenes (such as vending machines, super self-help navigation stations, self-help cash registers, self-help ordering machines, etc.), devices in large-scale sports and music stadiums, and the like. The specific forms of the STA and the AP are not limited in the embodiments of the present application, and are only exemplary.

Optionally, referring to fig. 2a, fig. 2a is a schematic structural diagram of an access point provided in the embodiment of the present application. The AP may be multi-antenna or single-antenna. In fig. 2a, the AP includes a physical layer (PHY) processing circuit that may be used to process physical layer signals and a Medium Access Control (MAC) processing circuit that may be used to process MAC layer signals. The 802.11 standard focuses on the PHY and MAC portions. Referring to fig. 2b, fig. 2b is a schematic structural diagram of a station provided in the embodiment of the present application. Fig. 2b shows a schematic structural diagram of a STA with a single antenna, and in an actual scenario, the STA may also be a multi-antenna device, and may be a device with more than two antennas. In fig. 2b, the STA may include PHY processing circuitry and MAC processing circuitry, the physical layer processing circuitry may be used to process physical layer signals, and the MAC layer processing circuitry may be used to process MAC layer signals.

The foregoing briefly explains the system architecture of the embodiment of the present application, and in order to better understand the technical solutions of the embodiment of the present application, several contents related to the embodiment of the present application will be described below.

Frequency domain segment (frequency segment)

In a WLAN, channels are typically divided into a master channel and a slave channel, where the slave channel may contain one or more sub-channels. If the division is performed by using 20MHz as the basic bandwidth unit, the 320MHz channel may be divided into 16 sub-channels, which are numbered as channel 1 to channel 16 in sequence, and each number represents one 20MHz channel.

In a WLAN, one contiguous block of spectrum for transmission may be referred to as a frequency segment. A WLAN channel may comprise a plurality of frequency domain slices, where each frequency domain slice may have a bandwidth of 80MHz, 40MHz, 20MHz, or 160 MHz. Referring to fig. 3, fig. 3 is a schematic diagram of division of frequency domain slices in a 320MHz channel according to an embodiment of the present application. As shown in fig. 3, taking the bandwidth of a frequency domain slice as an example of 80MHz, the 320MHz channel shown in fig. 3 can be divided into 4 frequency domain slices. Frequency domain slicing may also be referred to as frequency slicing, or simply slicing or segmenting.

Second, uplink scheduling transmission method based on trigger frame in IEEE 802.11ax standard

Referring to fig. 4, fig. 4 is a schematic flowchart of an uplink scheduling transmission method based on a trigger frame in the 802.11ax standard. As shown in fig. 4, the method for uplink scheduling transmission based on a trigger frame specifically includes:

(1) the AP sends a trigger frame that schedules one or more STAs to send an uplink trigger-based HE PPDU (also referred to colloquially as a packet, or data packet). The Trigger-Based HE PPDU may be abbreviated as HE TB PPDU (High efficiency 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.

(2) After receiving the trigger frame, the STA parses a user information field matching its 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 matched with the AID of the station and 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. For AIDs for random contention, 2 classes are assigned, one is an AID for random contention of associated stations, such as "0", and the other is an AID for random contention of unassociated stations, such as "2045".

Alternatively, the meanings and functions of the various fields that may be included in the HE TB PPDU can be referred to table 1 below.

TABLE 1

(3) And the AP receives the uplink multi-user PPDU, wherein the uplink multi-user PPDU comprises uplink sub PPDUs sent by one or more stations. The AP then replies with an acknowledgement frame. The ack frame transmitted to one or more stations may be transmitted in an OFDMA (orthogonal frequency division multiple access) format, or may be transmitted in a non-high throughput (non-HT) duplicate transmission format. The acknowledgement frame includes an Ack frame and a Block acknowledgement (Block Ack) frame, where the Block Ack frame includes a compressed Block Ack frame, and a Multi-site Block acknowledgement (Multi-STA Block Ack) frame. The Ack frame and the Block Ack frame are acknowledgements of information transmitted to one station, and the Multi-STA Block Ack is an acknowledgement of information transmitted to one or more stations.

Referring to fig. 5a, fig. 5a is a schematic diagram of a frame format of a trigger frame in the 802.11ax standard. As shown in fig. 5a, the trigger frame includes a common information (common information) field and a user information list (user information list) field. The common information field contains common information that all STAs need to read, the user information list field includes one or more user information fields, and one user information field contains information that one STA needs to read.

Referring to fig. 5b, fig. 5b is a frame format diagram of the common information field and the user information field in the trigger frame of the 802.11ax standard. As shown in fig. 5b, in the user information field, the association identification 12(association identification 12, AID12) indicates an association identification of a STA, and the Resource Unit (RU) allocation (RU allocation) subfield is used to indicate a specific resource unit position to which the STA (STA indicated by AID12) is allocated.

Some of the common information fields of the trigger frame will be briefly described below based on the illustration of fig. 5 b.

1. Trigger frame type field in common information field

The trigger frame type field occupies 4 bits for indicating 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 refer to table 2 below.

TABLE 2

2. Uplink bandwidth field in common information field

The uplink bandwidth field occupies 2 bits for indicating the bandwidth in the HE-SIG-a of the HE TB PPDU. The uplink bandwidth field takes a value of 0, and indicates that the bandwidth in the HE-SIG-A is 20 MHz; the value of the uplink bandwidth field is 1, and the bandwidth in the HE-SIG-A is indicated to be 40 MHz; the value of the uplink bandwidth field is 2, and the bandwidth in the HE-SIG-A is indicated to be 80 MHz; and the value of the uplink bandwidth field is 3, which indicates that the bandwidth in the HE-SIG-A is 160 MHz.

3. HE-LTF symbol number and midamble period field in common information field, and Doppler field

The number of HE-LTF symbols and the midamble period field occupy 3 bits. The doppler field occupies 1 bit. The number of HE-LTF symbols is used in combination with the midamble period field, and the doppler field.

Specifically, when the value of the doppler field is 0, the number of HE-LTF symbols and 3 bits in the midamble period field are used to indicate the number of HE-LTF symbols. The number of HE-LTF symbols and the value of the intermediate code period field are 0, and the number of the HE-LTF symbols is indicated to be 1; the number of HE-LTF symbols and the value of the intermediate code period field are 1, and the number of the HE-LTF symbols is indicated to be 2; the number of HE-LTF symbols and the value of the intermediate code period field are 2, and the number of the HE-LTF symbols is indicated to be 4; the number of HE-LTF symbols and the value of the intermediate code period field are 3, and the number of the HE-LTF symbols is indicated to be 6; the number of HE-LTF symbols and the value of the intermediate code period field are 4, and the number of the HE-LTF symbols is indicated to be 8; the number of HE-LTF symbols and other values of the period field of the intermediate code are reserved values.

When the value of the Doppler subfield is 1, the number of HE-LTF symbols and the first 2 bits in the midamble period field are used for indicating the number of HE-LTF symbols, and the number of HE-LTF symbols and the 3 rd bit in the midamble period field are used for indicating the midamble period. When the value of the current 2 bits is 0, indicating that the number of HE-LTF symbols is 1; when the value of the current 2 bits is 1, indicating that the number of HE-LTF symbols is 2; when the value of the current 2 bits is 2, indicating that the number of HE-LTF symbols is 4; the value of the first 2 bits is 3 is a reserved value. The number of HE-LTF symbols and the value of the 3 rd bit in the intermediate code period field are 0, and the intermediate code period is indicated to be 10 symbols; the value of the 3 rd bit is 1, indicating that the period of the midamble is 20 symbols.

The above is an introduction of some fields in the common information field of the trigger frame under the 802.11ax standard, and based on the illustration in fig. 5b, a brief introduction of some fields in the user information field of the trigger frame is described below.

1. AID12 field in user information field

The AID12 field occupies 12 bits, and its value and meaning can be referred to the following table 3.

TABLE 3

That is, in the 802.11ax standard, if the AID12 field of a user information field takes a value of 0 or 2045, the user information field is used to allocate one or more consecutive random access RUs to a managed station. If the value of the AID12 field of one user information field is any one of values 1 to 2007, the user information field is used for carrying information that a station with the AID matching the value of the AID12 field needs to read. If the AID12 field of a user information field takes a value of 2046, the user information field is used to indicate that an RU is not allocated. If the value of the AID12 field of a user information field is 4095, the user information field is used as a padding field. In addition, in the 802.11ax standard, the values 2008-.

2. Resource unit allocation field in user information field

In the 802.11ax standard, the resource unit allocation field may indicate the size and location of allocated RUs in conjunction with the uplink bandwidth field in the common information field.

Understandably, since the uplink bandwidth field in the common information field occupies 2 bits, the maximum indication is 160MHz bandwidth, that is, the triggering frame of 802.11ax mostly triggers the station to perform uplink data transmission on the 160MHz bandwidth; while the maximum transmission bandwidth supported by the 802.11be standard is 320 MHz. Therefore, in order to support the 320MHz bandwidth of the 802.11be standard, embodiments of the present application provide a PPDU uplink bandwidth indication method, which may multiplex a trigger frame of 802.11ax to trigger an EHT station to perform uplink data transmission on the bandwidth greater than 160MHz, and does not affect the HE station to receive the trigger frame, and does not need to redesign a new trigger frame to schedule the EHT station to perform uplink data transmission, so that on the premise of ensuring compatibility of the trigger frame, the trigger frame has a capability of triggering the EHT station to perform uplink data transmission on the bandwidth greater than 160MHz, and may also reduce complexity and save signaling overhead.

The technical solutions provided in the present application will be described in detail below with reference to more drawings.

It can be understood that the AP and the STA in the present application may be a single-link device, or may be a functional entity or a functional unit in a multi-link device, for example, the AP in the present application is a certain AP in the AP multi-link device, and the STA is a certain STA in the station multi-link device, which is not limited in this application.

It can be understood that, the following describes, by taking an embodiment in a communication system formed by an AP and one or more STAs, an uplink bandwidth indication method of a PPDU provided in the embodiment of the present application as an example. The AP supports IEEE 802.11be protocol (or Wi-Fi7, EHT protocol), and may also support other WLAN communication protocols, such as IEEE 802.11ax, IEEE 802.11ac, and the like. At least one STA among the one or more STAs supports the IEEE 802.11be protocol. It should be understood that the AP and the STA in the embodiment of the present application may also support the next generation protocol of IEEE 802.11 be. That is to say, the PPDU uplink bandwidth indication method provided in the embodiment of the present application is applicable to not only the IEEE 802.11be protocol but also the IEEE 802.11be next-generation protocol.

It should be understood that the STA in the embodiment of the present application may be an HE station or an EHT station. The HE station can only transmit HE TB PPDU, the EHT station can transmit both HE TB PPDU and EHT PPDU Based on triggering, and the HE PPDU Based on triggering can be abbreviated as EHT TB PPDU (explicit high throughput Trigger Based Physical layer Protocol Data Unit).

Referring to fig. 6, fig. 6 is a schematic flowchart of an uplink bandwidth indication method of a PPDU provided in the embodiment of the present application. As shown in fig. 6, the method for indicating the uplink bandwidth of the PPDU includes, but is not limited to, the following steps:

s101, an AP generates a trigger frame, wherein the trigger frame comprises first indication information, and 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 (layer data protocol unit) or the total transmission bandwidth of the uplink PPDU (layer data protocol unit).

The frame format of the trigger frame may be as shown in fig. 5a, and includes 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 fig. 5b, including an uplink bandwidth field for indicating the bandwidth in HE-SIG-a of the HE TB PPDU. The trigger frame may include first indication information therein. And the first indication information and an 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 bandwidth of the transmission 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.

Optionally, the first indication information may also be directly used to indicate a total transmission bandwidth of the uplink PPDU or a bandwidth of the EHT TB PPDU, and does not need to be indicated by a joint uplink bandwidth field.

Optionally, the trigger frame further includes second indication information, where the second indication information is used to indicate distribution of a trigger-based high efficiency physical layer protocol data unit, HE TB PPDU, and/or EHT TB PPDU within a total transmission bandwidth of the uplink PPDU (where the distribution refers to bandwidth size and frequency domain fragmentation). Alternatively, the second indication information indicates whether the station transmits the HE TB PPDU or the EHT TB PPDU.

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

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

The trigger frame may be used to schedule one or more EHT sites to perform uplink multi-user transmission, and may also schedule an HE site and an EHT site to perform uplink multi-user transmission simultaneously, that is, an uplink multi-user mixed transmission mode is supported. It should be understood that the HE station can only transmit HE TB PPDU, and the EHT station can transmit both HE TB PPDU and EHT TB PPDU.

It should be understood that the HE/EHT short training field, the HE/EHT long training field, and the data field in the PPDU are transmitted on a resource block, and the resource block indication information is located in the user information field matched with the station AID, which is the same as below and is not described again.

If the trigger frame includes user information fields of one or more HE sites, then the trigger frame for non-HT duplicate transmissions at the primary 80MHz or the primary 160MHz cannot be punctured, i.e., the trigger frame for non-HT needs to be transmitted at each 20MHz at the primary 80MHz or the primary 160 MHz.

S102, the AP sends the trigger frame. Accordingly, the STA receives the trigger frame.

S103, the STA parses the trigger frame.

Optionally, S104, the STA generates an HE TB PPDU or an EHT TB PPDU, and a bandwidth field of a general signaling field in a 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. Or setting a bandwidth field of a general signaling field in a preamble of the EHT TB PPDU to a value jointly indicated by the first indication information and the uplink bandwidth field.

Optionally, in S105, the STA sends the generated HE TB PPDU or the EHT TB PPDU according to the indication of the second indication information. Accordingly, the AP receives the HE TB PPDU or the EHT TB PPDU.

As can be seen, in the embodiment of the present application, the first indication information is carried in the trigger frame of 802.11ax, and is used to directly indicate or jointly indicate the bandwidth of the EHT TB PPDU or the total transmission bandwidth of the uplink PPDU; the first indication information is used for indicating the distribution of the HE TB PPDU and/or the EHT TB PPDU in the total transmission bandwidth of the uplink PPDU, or indicating the frequency domain slices of the EHT TB PPDU and/or the frequency domain slices of the HE TB PPDU, or directly indicating whether the EHT station transmits the HE TB PPDU or the EHT TB PPDU; and the EHT station sets a bandwidth field of a communication signaling field in the EHT TB PPDU according to one or more items 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 one hand, the trigger frame of 802.11ax can be multiplexed to trigger the EHT site to perform uplink data transmission on the bandwidth larger than 160MHz, so that the trigger frame has the capability of triggering the EHT site to perform uplink data transmission on the bandwidth larger than 160MHz on the premise of ensuring the compatibility of the trigger frame; on the other hand, the HE site is not influenced to receive the trigger frame, and a new trigger frame does not need to be redesigned to schedule the EHT site to carry out uplink data transmission, so that the complexity can be reduced, and the signaling overhead can be saved.

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

Optionally, the first indication information may be located in an unused bit (or a reserved bit) of the common information field of the trigger frame, or may be located in a special user information field (denoted as a first user information field) of the trigger frame. A value of the association identifier AID12 field in the first user information field is a preset value, where the preset value may be an AID that is not currently used, that is, any one of 2008 to 2044 or 2046 to 4095, for example, a value of the AID12 in the first user information field is 2044, which indicates that the first user information field carries part of the common information of the trigger frame.

The first indication information may be referred to as an uplink bandwidth extension field, and may also have other names, for example, 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 a total transmission bandwidth of the uplink PPDU or a bandwidth of the EHT TB PPDU. In other words, the embodiment of the present application expands the 802.11ax trigger frame, and adds an uplink bandwidth expansion field in the 802.11ax trigger frame, where the uplink bandwidth expansion field may be placed in an unused bit in the common information part of the trigger frame or in a special user information field.

The first indication information may be referred to as an uplink PPDU total bandwidth field, and may also have other names, which is not limited in this embodiment of the present application. The uplink PPDU total bandwidth field is directly used to indicate a transmission total bandwidth of the uplink PPDU.

The first indication information may be referred to as an uplink EHT TB PPDU bandwidth field, and may also have other names, which is not limited in this embodiment of the present application. The uplink EHT TB PPDU bandwidth field is directly used to indicate the bandwidth of the EHT TB PPDU.

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

If the second indication information is used to indicate distribution of the HE TB PPDU and/or the EHT TB PPDU within a total transmission bandwidth of the uplink PPDU, the second indication information may be located in a reserved bit of a common information field of the trigger frame or in the first user information field. In other words, in the embodiment of the present application, an EHT/HE indication field is added in a special user information field of an 802.11ax trigger frame, so as to indicate whether an EHT station transmits an HE TB PPDU or an EHT TB PPDU on one or more frequency domain slices in an uplink bandwidth. The "uplink bandwidth" mentioned in the embodiment of the present application is the total transmission bandwidth of the uplink PPDU, and the uplink bandwidth and the total transmission bandwidth may be used by replacing each other.

The second indication information may be located in reserved bits of a common information field of the trigger frame or in the first user information field if the second indication information is used to indicate frequency domain slices of the EHT TB PPDU and/or frequency domain slices of the HE TB PPDU.

The second indication information may be located in the second user information field if the second indication information indicates whether the EHT station transmits the HE TB PPDU or the EHT TB PPDU. In other words, in the embodiment of the present application, 1 bit is added in the user information field of the trigger frame to indicate whether the EHT station transmits the HE TB PPDU or the EHT TB PPDU.

For example, referring to fig. 7, fig. 7 is a schematic diagram of a frame structure of a first user information field provided in an embodiment of the present application. Fig. 7 shows that the first user information field carries the first indication information and the second indication information. As shown in fig. 7, the first user information field includes an AID12 field, an upstream bandwidth extension field, an EHT/HE indication field, and the like. The AID12 field takes a value of any one of 2008 to 2044 or 2046 to 4095, for example 2044. In fig. 7, the AID12 field occupies 12 bits, the uplink bandwidth extension field occupies 2 bits or 3 bits, the EHT/HE indication field occupies x bits, and x may take a value of 1,2, or 4.

It should be appreciated that HE site can only correctly decode the uplink bandwidth field and not decode the uplink bandwidth extension field.

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 described first, and then the implementation of the first indication information is described.

First and second indication information

The method a comprises the following steps: the second indication information is located in the first user information field or in a reserved bit of the common information field of the trigger frame. An EHT/HE indication field to indicate whether the EHT station transmits the HE TB PPDU or the EHT TB PPDU on one or more frequency domain slices in a transmission total bandwidth of the uplink PPDU.

Embodiment a-1, if it is defined that only the primary 160MHz channel can be used to mix and transmit the HE TB PPDU and the EHT TB PPDU, and the bandwidth granularity (frequency domain slicing) of the uplink sub PPDU transmission is 80MHz, the EHT/HE indication field may occupy 2 bits, where a first bit of the two bits corresponds to a first 80MHz channel and a second bit corresponds to a second 80MHz channel. The value of the first bit is used to indicate whether the first 80MHz channel within the main 160MHz channel transmits the HE TB PPDU or the EHT TB PPDU. The value of the second bit is used to indicate whether the second 80MHz channel within the primary 160MHz channel transmits the HE TB PPDU or the EHT TB PPDU.

Illustratively, when the value of the first bit is 0, the first 80MHz channel is instructed to transmit the HE TB PPDU; and when the value of the first bit is 1, indicating that the first 80MHz transmission EHT TB PPDU is transmitted.

Or when the value of the first bit is 0, indicating a first 80MHz channel to transmit an EHT TB PPDU; and when the value of the first bit is 1, indicating that the first 80MHz transmits HE TB PPDU.

Wherein, the first 80MHz channel and the second 80MHz channel can adopt one of the following designs, and is applied to all embodiments of the present application:

design 1, the first 80MHz channel is the master 80MHz channel and the second 80MHz channel is the slave 80MHz channel.

Design 2, the first 80MHz channel is a slave 80MHz channel and the second 80MHz channel is a master 80MHz channel.

Design 3, the first 80MHz channel is the first 80MHz channel in the low frequency to high frequency ordering under the 160MHz bandwidth, and the second 80MHz channel is the second 80MHz channel in the low frequency to high frequency ordering under the 160MHz bandwidth.

Design 4, the first 80MHz channel is the first 80MHz channel in the high frequency to low frequency ordering under the 160MHz bandwidth, and the second 80MHz channel is the second 80MHz channel in the high frequency to low frequency ordering under the 160MHz bandwidth.

For example, the description is given with reference to fig. 8, and fig. 8 is a schematic structural diagram of an uplink multi-user PPDU provided in the embodiment of the present application. If the bit value is 0, indicating to transmit HE TB PPDU; the bit value is 1, indicating transmission of an EHT TB PPDU. Assuming that design 1 is adopted for the first 80MHz channel and the second 80MHz channel, when the value of the EHT/HE indication field is 01, it indicates that the EHT station transmits the HE TB PPDU on the master 80MHz channel within the master 160MHz, and the EHT station transmits the EHT TB PPDU on the slave 80MHz channel within the master 160 MHz. It is to be understood that fig. 8 is only a schematic diagram showing a mixed transmission scenario in which the uplink multi-user PPDU is an HE TB PPDU and an EHT TB PPDU. When the EHT/HE indication field takes a value of 00, the EHT station (here, the EHT station may be one or more) transmits HE TB PPDU on both a master 80MHz channel and a slave 80MHz channel within the master 160 MHz. When the value of the EHT/HE indication field is 11, the EHT station (here, the EHT station may be one or more) transmits EHT TB PPDUs on both a master 80MHz channel and a slave 80MHz channel within the master 160 MHz. That is, in this case, the uplink multi-user PPDU is composed of a plurality of sub PPDUs of the same PPDU type.

Embodiment a-2, if it is defined that only the primary 160MHz channel may be used to mix the HE TB PPDU and the EHT TB PPDU, and the bandwidth granularity (frequency domain slicing) of the uplink sub PPDU transmission is 160MHz, the EHT/HE indication field may occupy 1 bit, where the 1 bit is used to indicate whether the EHT station transmits the HE TB PPDU or the EHT TB PPDU within the primary 160 MHz.

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

Embodiment a-3, if 320MHz channels can be used to mix and transmit HE TB PPDU and EHT TB PPDU, and the bandwidth granularity (frequency domain slicing) of uplink sub PPDU transmission is 80MHz, the EHT/HE indication field may occupy 4 bits. These 4 bits correspond one-to-one to 4 80MHz channels at a 320MHz bandwidth. The value of each bit is used for indicating whether the EHT station transmits HE TB PPDU or 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, bits corresponding to 80MHz channels that are not within the uplink bandwidth (i.e., the total transmission bandwidth of the uplink PPDU) may be ignored or not used.

Embodiment a-4, if 320MHz channels can be used to mix and transmit HE TB PPDU and EHT TB PPDU, and the bandwidth granularity (frequency domain slicing) of uplink sub PPDU transmission is 160MHz, the EHT/HE indication field may occupy 2 bits. These 2 bits correspond one-to-one to 2 160MHz channels at a 320MHz bandwidth. The value of each bit is used for indicating whether the EHT station transmits HE TB PPDU or EHT TB PPDU on the 160MHz channel corresponding to the bit. It can be understood that if the uplink bandwidth (i.e., the total bandwidth of transmission of the uplink PPDU) is less than 320MHz, bits corresponding to 160MHz channels that are not within the uplink bandwidth (i.e., the total bandwidth of transmission of the uplink PPDU) may be ignored or not used.

Optionally, after the AP sends the trigger frame, the trigger frame may include a user information field for sending the HE TB PPDU to the HE station, and one or more user information fields of the EHT/HE TB PPDU sent by the EHT station, for example, the user information fields for scheduling the HE station and the EHT station at the same time. The station responds to the uplink multi-user PPDU, wherein parameters of a general signaling field of a physical layer preamble of the uplink EHT TB PPDU (e.g., a part of the EHT TB PPDU shown in fig. 8) are obtained from the received trigger frame, such as bandwidth signaling of the EHT TB PPDU. In addition, the common signaling field of the uplink EHT TB PPDU includes fields such as a PHY (physical layer) version identification number, a TXOP (transmit opportunity), a BSS (basic service set) color, a cyclic redundancy check code, and a tail bit. The PHY version identification code field in the general signaling field in the physical layer preamble of the uplink EHT TB PPDU (or referred to as a sub-EHT TB PPDU) sent by the EHT station in response to the trigger frame may be obtained from the EHT/HE indication field in the trigger frame.

Specifically, for any of the foregoing embodiments a-1 to a-4, if the EHT/HE indication field of the trigger frame indicates that one of the frequency segments transmits HE TB PPDU, the EHT station transmits HE TB PPDU on the frequency segment, whose physical layer preamble, such as the high efficiency signaling field a, does not carry a PHY version identification number, as with 802.11 ax. 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 the frequency segment, carrying a PHY version identification number field (e.g., 3 bits), and the PHY version identification number field is set to a value corresponding to the EHT TB PPDU, such as "0".

For example, the embodiment a-1 will be described with reference to fig. 8. If the bit value is 0, indicating to transmit HE TB PPDU; the bit value is 1, indicating transmission of an EHT TB PPDU. Assuming that the first 80MHz channel and the second 80MHz channel adopt design 1, when the value of the EHT/HE indication field is 01, it indicates that the EHT station transmits HE TB PPDU on the main 80MHz channel within the main 160MHz, and the physical layer preamble does not include the PHY version identification number field; and the EHT station transmits the EHT TB PPDU on a slave 80MHz channel in the master 160MHz, wherein a universal signaling field in a preamble of a physical layer comprises a PHY version identification number field, and the value is set to be 0 corresponding to the EHT TB PPDU.

For another example, in the foregoing embodiment a-2, assuming that the bit value is 0, it indicates to transmit HE TB PPDU; the bit value is 1, indicating transmission of an EHT TB PPDU. When the value of the EHT/HE indication field is 0, it indicates that the EHT station transmits HE TB PPDU on the main 160MHz channel, and the physical layer preamble thereof does not include the PHY version identification number field. When the value of the EHT/HE indication field is 1, it indicates that the EHT station transmits an EHT TB PPDU on a main 160MHz channel, where a general field in a physical layer preamble includes a PHY version identification number field, and the value is set to be "0" corresponding to the EHT TB PPDU.

The method b comprises the following steps: the second indication information is located in a common information field of the trigger frame. And the EHT/HE indication field is used for indicating whether the EHT station transmits the HE TB PPDU or the EHT TB PPDU on the resource block allocated in the total transmission bandwidth of the uplink PPDU.

Embodiment b-1, if it is defined that only the primary 160MHz channel can be used to mix the HE TB PPDU and the EHT TB PPDU, and the bandwidth granularity (frequency domain slicing) of the uplink sub PPDU transmission is 80MHz, the EHT/HE indication field may occupy 2 PHY version identification number fields, where a first PHY version identification number field in the PHY version identification number fields corresponds to a first 80MHz channel and a second PHY version identification number field corresponds to a second 80MHz channel. The first PHY version identification number field value is used to indicate whether the first 80MHz channel within the primary 160MHz channel is transmitting an HE TB PPDU, an EHT TB PPDU or other next generation type PPDU. The value of the PHY version identification number field is used to indicate whether the second 80MHz channel within the primary 160MHz channel is transmitting the HE TB PPDU, the EHT TB PPDU or other next generation type PPDU. Wherein, the value of the field corresponding to the next generation type PPDU is reserved because the PPDU is not determined at present.

For the first 80MHz channel and the second 80MHz channel, reference may be made to the above, which is not described herein again.

Illustratively, the first PHY version id field is 3 bits, and takes a value of 0 (binary 000), indicating that the first 80MHz channel transmits the HE TB PPDU; the value of the first bit is 1 (binary 001), indicating that the first 80MHz transmits an EHT TB PPDU.

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

For example, referring to fig. 8, assuming that the PHY version identification number field takes a value of 0, indicating that HE TB PPDU is transmitted; the PHY version identification number field takes a value of 1 to indicate transmission of an EHT TB PPDU. The EHT/HE indication field is 000001, indicating that the EHT station transmits the HE TB PPDU on a master 80MHz channel within the master 160MHz, and the EHT station transmits the EHT TB PPDU on a slave 80MHz sub-channel within the master 160 MHz.

Embodiment b-2, if it is defined that only the primary 160MHz channel may be used to mix and transmit the HE TB PPDU and the EHT TB PPDU, and the bandwidth granularity (frequency domain slicing) of uplink sub-PPDU transmission is 160MHz, the EHT/HE indication field may occupy 1 PHY version identification number field, where the 1 PHY version identification number field is used to indicate that the EHT station transmits the HE TB PPDU within the primary 160MHz, and the EHT TB PPDU is also another next generation type PPDU.

Since the maximum transmission bandwidth supported by the EHT standard is 320MHz, the EHT station may transmit the EHT TB PPDU on a channel from 160MHz by default for the above-described embodiment a-1 and embodiment a-2.

Embodiment b-3, if 320MHz channels can be used to mix the HE TB PPDU and the EHT TB PPDU, and the bandwidth granularity (frequency domain slicing) of the uplink sub PPDU transmission is 80MHz, the EHT/HE indication field may occupy 4 PHY version identification number fields. These 4 PHY version identification number fields correspond one-to-one to 4 80MHz channels at a 320MHz bandwidth. The value of each PHY version identification number field is used for indicating that the EHT station transmits HE TB PPDU or next generation type PPDU on the 80MHz channel corresponding to the PHY version identification number field. It will be appreciated that if the upstream bandwidth is less than 320MHz, the PHY version-identifier field corresponding to an 80MHz channel not within the upstream bandwidth may be ignored/omitted or unused.

Embodiment b-4, if 320MHz channels can be used to mix the HE TB PPDU and the EHT TB PPDU, and the bandwidth granularity (frequency domain slicing) of the uplink sub PPDU transmission is 160MHz, the EHT/HE indication field may occupy 2 PHY version identification number fields. These 2 PHY version identification number fields correspond one-to-one to 2 160MHz channels at 320MHz bandwidth. The value of each PHY version identification number field is used for indicating that the EHT site transmits HE TB PPDU on the 160MHz channel corresponding to the PHY version identification number field, and the EHT TB PPDU is also a next generation type PPDU. It will be appreciated that if the upstream bandwidth is less than 320MHz, the PHY version identifier field corresponding to 160MHz channels not within the upstream bandwidth may be omitted or unused.

Optionally, if the EHT/HE indication field of the trigger frame carries a PHY version identification number field corresponding to each frequency domain slice, the EHT station transmits a PPDU type indicated by the PHY version identification number field transmitted on the frequency domain slice at this time, and if the indication is an HE TB PPDU, a physical layer preamble of the HE TB PPDU, such as a high efficiency signaling field a is the same as 802.11ax, does not carry a PHY version identification number; if the indication is EHT TB PPDU, the EHT station transmits and transmits HE TB PPDU on the frequency domain slice at this time, and directly copies a PHY version identification number field (for example, 3 bits) corresponding to the frequency domain slice in the trigger frame, for example, a value of "0"; if the next generation PPDU is indicated as an EHT TB PPDU, a PHY version identification number field (e.g., 3 bits) corresponding to the frequency domain slice of the trigger frame is directly copied, for example, to have a value of "1".

The method c comprises the following steps: the second indication information is located in a second user information field of the trigger frame. That is, 1 bit is added to the user information field in the trigger frame to carry second indication information for indicating whether the EHT station transmits the HE TB PPDU or the EHT TB PPDU. When the 1 bit or the EHT/HE indication field takes a value of 0, indicating the EHT station to transmit an HE TB PPDU; and when the 1 bit or the EHT/HE indication field takes a value of 1, indicating the EHT station to transmit an EHT TB PPDU. Or when the 1 bit or the EHT/HE indication field takes a value of 0, indicating the EHT station to transmit an EHT TB PPDU; and when the 1 bit or the EHT/HE indication field takes a value of 1, indicating the EHT station to transmit an HE TB PPDU.

Method d the second indication information is located in a common information field of the trigger frame. And the EHT/HE indication field is used for indicating the mode of the uplink PPDU of the mixed transmission, wherein the uplink PPDU of the mixed transmission comprises an HE TB PPDU and an EHT TB PPDU. The field indirectly informs whether the EHT station transmits the HE TB PPDU or the EHT TB PPDU, and the specific method is the same as before, and is also determined by the 80MHz where the resource block allocated by the station is located.

Specifically, the uplink PPDU mode of the hybrid transmission includes one or more of the following:

the above mode may further consider that frequency bands smaller than 80MHz are punctured, such as 20MHz, 40MHz, etc.

Wherein the first 80MHz and the second 80MHz of the next 160MHz are ordered from high to low or from low to high according to the frequency of 160 MHz.

Considering that an existing 160MHz 802.11ax station or 802.11ac station may merge legacy preambles, such as L-SIG fields, on every 20MHz of 160MHz, and a preamble of a duplicate transmission, such as HE-SIG-a fields in 802.11ax, or VHT-SIG-a fields of 802.11ac, on every 20MHz of 160MHz, it is proposed that the uplink PPDU of the primary 160MHz transmission does not allow for a hybrid transmission, and thus the uplink PPDU mode of the hybrid transmission includes one or more of:

in addition, it is also proposed to add a bit to indicate whether the uplink PPDU for hybrid transmission or the uplink PPDU for non-hybrid transmission includes the following specific steps

1. Adding 1 bit signaling to indicate whether the triggered uplink PPDU is in mixed transmission or non-mixed transmission, or

2. Adding a special uplink PPDU mode of mixed transmission, namely non-mixed transmission, in the uplink PPDU mode table of the 2 mixed transmissions.

In addition, the HE site receives the trigger frame and can only send the uplink HE TB PPDU.

Optionally, in this embodiment of the present application, a user information field in the trigger frame of 802.11ax is referred to as a user information field of HE. Due to the introduction of characteristics such as 320MHz bandwidth (including multiple resource block combinations in resource allocation) and 16 spatial streams in the EHT standard, resource block (resource block, i.e., resource unit RU in this application) allocation fields and spatial stream allocation fields in user information fields of a trigger frame need to be changed, and the changed user information fields are referred to as EHT user information fields. In addition to the MU-BAR (multi-user-block ack request) type trigger frame, the length of the user information field of the 802.11be designed trigger frame is consistent with the length of the user information field of the same type of 802.11ax trigger frame.

For various embodiments of the EHT/HE indication field in the above method a and the above method b, the EHT site parses one kind of user information field, i.e., parses according to the user information field of the EHT. But the EHT station may still transmit an EHT TB PPDU or an HE PPDU on the allocated resource blocks as indicated by the EHT/HE indication field. The allocated resource blocks are indicated by a resource block allocation field in the trigger frame, and may indicate on which frequency domain slice the resource block of the EHT station is transmitted.

Or may be understood as: for various embodiments of the EHT/HE indication field in the method a and the method b, the EHT station parses a user information field whose AID (association identifier) matches, and determines that it is to transmit an EHT TB PPDU or an HE TB PPDU by using 80MHz where an allocated resource block indicated by a resource block allocation field in the user information field is located. The allocated resource blocks are indicated by a resource block allocation field in the trigger frame, and the EHT/HE indication field may indicate a type (EHT TB PPDU or HE TB PPDU) of uplink PPDU transmitted by the EHT station on the corresponding resource blocks. Specifically, B0 in the resource block allocation field in the HE user information field is used to indicate primary 80MHz or secondary 80MHz, the reserved (reserved) bit (bit 40) in the HE user information field is set to 0 by protocol default, which can be understood as primary 160MHz (since HE PPDU is transmitted only on primary 160MHz), while the resource block allocation field in the EHT user information field requires 9 bits, 1 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 can use the reserved bit (bit 40) in the HE user information field, which is noted as BS bit, which is set to 0, which indicates primary 160MHz, set to 1, which indicates secondary 160MHz, and the meaning of B0 bit (first bit in this field) in the resource allocation field in the original 8 bits in the HE user information field is reserved, i.e. to indicate primary or secondary 80MHz, another 7 bit table may be added with some 802.11be newly supported resource blocks or multiple resource block combinations. Therefore, the EHT station may determine the 80 MHz(s) of the allocated resource blocks according to the BS and B0 bits in the HE user information field or EHT user information field.

For the implementation of the second indication information in the method c, the EHT station needs to parse 2 user information fields, and if the transmission of the HE PPDU is indicated, the EHT station parses the user information fields according to HE and then sends the HE PPDU; if the transmission of the EHT TB PPDU is indicated, the EHT site analyzes according to the user information field of the EHT; and then transmits the EHT TB PPDU.

While the specific implementation of the second indication information is described above, the implementation of the first indication information will be described in detail below.

It should be understood that in the 6GHz band, 320MHz channel division overlaps, so it is necessary to distinguish the frequency domain location of 320MHz, i.e. 320MHz-1 and 320 MHz-2. Specifically, as shown in fig. 9, fig. 9 is a schematic diagram of the division of 320MHz channels in the 6GHz band.

The 802.11be device may be divided into a first version and a second version, and for simple implementation of the station of the first version, it is proposed that the EHT AP of the first version does not support sending the trigger frame of the hybrid schedule, and the EHT AP of the second version supports sending the trigger frame of the hybrid schedule, so that

The invention provides third indication information, wherein the third indication information is located in a first user information field or in a reserved bit of a common information field of a trigger frame and is used for indicating whether the trigger frame is used for triggering uplink PPDU of mixed transmission or uplink PPDU of non-mixed transmission.

Second, first indication information

The following embodiments are all explained by taking the frame configuration diagram shown in fig. 7 as an example. That is, the first indication information is located in the first user information field.

The method comprises the following steps: the uplink bandwidth expansion field is used for indicating the total transmission bandwidth of the uplink PPDU by an uplink bandwidth field in the common information field of the joint trigger frame. The uplink bandwidth extension field occupies 2 bits.

Embodiment 1.1:

when the value of the uplink bandwidth field is 0, the uplink bandwidth expansion field is a reserved field, and the total transmission bandwidth of the uplink PPDU indicated by the joint is 20 MHz;

the above sentence is also understood as:

when the value of the uplink bandwidth field is 0 and the value of the uplink bandwidth expansion field is the 1 st (or 5 th) numerical value, the total transmission bandwidth of the uplink PPDU indicated by the joint is 20 MHz;

the value of the uplink bandwidth field is 0, the value of the uplink bandwidth expansion field is the 2 nd (or 6 th) numerical value, and the value combination is reserved (not used);

the value of the uplink bandwidth field is 0, the value of the uplink bandwidth expansion field is the 3 rd (or 7 th) numerical value, and the value combination is reserved (not used);

the value of the uplink bandwidth field is 0, the value of the uplink bandwidth expansion field is the 4 th (or 8 th) numerical value, and the value combination is reserved (not used);

or the following steps:

the value of the uplink bandwidth field is 0, the value of the uplink bandwidth expansion field is the 2 nd (or 6 th) numerical value, and the total transmission bandwidth of the uplink PPDU indicated by the joint is 80 MHz;

the value of the uplink bandwidth field is 0, the value of the uplink bandwidth expansion field is a3 rd (or 7 th) numerical value, and the total transmission bandwidth of the uplink PPDU indicated by the joint is 160 MHz;

it is worth noting that: the mixed uplink transmission of the 20MHz uplink HE PPDU and the 80MHz uplink PPDU (the 80MHz comprises the 20MHz uplink HE PPDU) may not be allowed in the protocol, therefore, the transmission can also be

the value of the uplink bandwidth field is 0, the value of the uplink bandwidth expansion field is a2 nd (or 6 th) numerical value, and the total transmission bandwidth of the uplink PPDU indicated by the joint is 160 MHz;

the value of the uplink bandwidth field is 0, the value of the uplink bandwidth extension field is the 3 rd (or 7 th) numerical value, and the value combination is reserved (not used).

when the value of the uplink bandwidth field is 1, the uplink bandwidth expansion field is a reserved field, and the total transmission bandwidth of the uplink PPDU indicated by the joint is 40 MHz;

the above sentence is also understood as:

when the value of the uplink bandwidth field is 1 and the value of the uplink bandwidth expansion field is the 1 st (or 5 th) numerical value, the total transmission bandwidth of the uplink PPDU indicated by the joint is 40 MHz;

the value of the uplink bandwidth field is 1, the value of the uplink bandwidth expansion field is the 2 nd (or 6 th) numerical value, and the value combination is reserved (not used);

the value of the uplink bandwidth field is 1, the value of the uplink bandwidth expansion field is the 3 rd (or 7 th) numerical value, and the value combination is reserved (not used);

the value of the uplink bandwidth field is 1, the value of the uplink bandwidth expansion field is the 4 th (or 8 th) numerical value, and the value combination is reserved (not used);

or the following steps:

the value of the uplink bandwidth field is 1, the value of the uplink bandwidth expansion field is the 2 nd (or 6 th) numerical value, and the total transmission bandwidth of the uplink PPDU indicated by the joint is 80 MHz;

the value of the uplink bandwidth field is 1, the value of the uplink bandwidth expansion field is a3 rd (or 7 th) numerical value, and the total transmission bandwidth of the uplink PPDU indicated by the joint is 160 MHz;

it is worth noting that: the mixed uplink transmission of the 40MHz uplink HE PPDU and the 80MHz uplink PPDU (the 80MHz comprises the 40MHz uplink HE PPDU) may or may not be allowed in the protocol, therefore, the transmission may also be

the value of the uplink bandwidth field is 1, the value of the uplink bandwidth expansion field is the 2 nd (or 6 th) numerical value, and the total transmission bandwidth of the uplink PPDU indicated by the joint is 160 MHz;

when the value of the uplink bandwidth field is 2 and the value of the uplink bandwidth expansion field is 1 st value, the total transmission bandwidth of the uplink PPDU indicated by the joint is 80 MHz;

when the value of the uplink bandwidth field is 2 and the value of the uplink bandwidth expansion field is the 2 nd value, the total transmission bandwidth of the uplink PPDU indicated by the joint is 160 MHz;

when the value of the uplink bandwidth field is 2 and the value of the uplink bandwidth expansion field is 3, the total transmission bandwidth of the uplink PPDU indicated by the joint is 320 MHz;

when the value of the uplink bandwidth field is 2 and the value of the uplink bandwidth expansion field is 4, the combination is reserved;

when the value of the uplink bandwidth field is 3 and the value of the uplink bandwidth expansion field is 5 th, the total transmission bandwidth of the uplink PPDU indicated by the joint is 160 MHz;

when the value of the uplink bandwidth field is 3 and the value of the uplink bandwidth expansion field is the 6 th value, the total transmission bandwidth of the uplink PPDU indicated by the joint indication is 320 MHz;

when the value of the uplink bandwidth field is 3 and the value of the uplink bandwidth expansion field is 7, the combination is reserved;

when the value of the uplink bandwidth field is 3 and the value of the uplink bandwidth extension field is the 8 th value, the combination is reserved.

The 1 st value to the 4 th value may be any one of {0,1,2,3}, and the 1 st value, the 2 nd value, the 3 rd value, and the 4 th value are different from each other. For example, a1 st value is 0, a2 nd value is 1, a3 rd value is 2, and a 4 th value is 3. Similarly, the 5 th value to the 8 th value may be any one of {0,1,2,3}, and the 5 th value, the 6 th value, the 7 th value, and the 8 th value are different from each other. For example, the 5 th value is 1, the 6 th value is 2, the 7 th value is 3, and the 8 th value is 0.

Embodiment 1.2:

the above sentence is also understood as:

or the following steps:

When the value of the uplink bandwidth field is 0 and the value of the uplink bandwidth expansion field is the 1 st (or 5 th) numerical value, the total transmission bandwidth of the EHT TB PPDU indicated by the joint is 20 MHz;

or the following steps:

the above sentence is also understood as:

when the value of the uplink bandwidth field is 2 and the value of the uplink bandwidth expansion field is 3, the total transmission bandwidth of the uplink PPDU indicated by the joint is 320 MHz-1;

when the value of the uplink bandwidth field is 2 and the value of the uplink bandwidth expansion field is a 4 th value, the total transmission bandwidth of the uplink PPDU indicated by the joint is 320 MHz-2;

when the value of the uplink bandwidth field is 3 and the value of the uplink bandwidth expansion field is the 6 th value, the total transmission bandwidth of the uplink PPDU indicated by the joint is 320 MHz-1;

when the value of the uplink bandwidth field is 3 and the value of the uplink bandwidth expansion field is 7 th value, the total transmission bandwidth of the uplink PPDU indicated by the joint is 320 MHz-2;

It can be seen that embodiment 1.1 differs from embodiment 1.2 in that: in embodiment 1.2, 320MHz is divided into 320MHz-1 and 320MHz-2 according to the frequency position. Embodiment 1.1 and embodiment 1.2 can be summarized as shown in table 4 below.

TABLE 4

TABLE 4a

TABLE 4b

It should be understood that although in the above embodiment 1.1 and the above embodiment 1.2, the 1 st numerical value to the 4 th numerical value, and the 5 th numerical value to the 8 th numerical value are referred to; however, the values of the 1 st numerical value to the 4 th numerical value in different embodiments may be different or may be the same, and similarly, the values of the 5 th numerical value to the 8 th numerical value in different embodiments may be different or may be the same. For example, in embodiment 1.1 and embodiment 1.2, the values of the 1 st to 4 th numerical values are 0,1,2, and 3, respectively; the values from the 5 th value to the 8 th value are 1,2,3 and 0 respectively. For another example, the values of the 1 st value to the 4 th value in embodiment 1.1 are 0,1,2, and 3, respectively, and the values of the 1 st value to the 4 th value in embodiment 1.2 are 3,2,1, and 0, respectively; the values of the 5 th value to the 8 th value in embodiment 1.1 are 1,2,3, and 0, respectively, and the values of the 5 th value to the 8 th value in embodiment 1.1 are 0,1,2, and 3, respectively. The same reason is not described in detail below.

In embodiment 1.1, when the total transmission bandwidth of the uplink PPDU is 320MHz, the uplink bandwidth field and the uplink bandwidth extension field may be set to 2 and 3 th values, respectively, or the uplink bandwidth field and the uplink bandwidth extension field may be set to 3 and 6 th values, respectively. In order to facilitate the receiving station to implement, or to provide more reserved or unused combining values, 2 methods are proposed:

1. when the uplink bandwidth field and the uplink bandwidth expansion field can be set to 3 and 6 numerical 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 rd values, respectively, the combination is reserved.

Or, when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 3 numerical values, respectively, the total transmission bandwidth of the uplink PPDU is 320MHz at this time; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 6 th values, respectively, the combination is reserved.

2. When the uplink bandwidth extension field is set to the 3 rd value, the uplink bandwidth field may be set to any value, i.e. any one of 0 to 3, and at this time, the total transmission bandwidth of the uplink PPDU is 320 MHz.

In embodiment 1.2, when the total transmission bandwidth of the uplink PPDU is 320MHz-1, the uplink bandwidth field and the uplink bandwidth extension field may be set to 2 and 3 th values, respectively, or the uplink bandwidth field and the uplink bandwidth extension field may be set to 3 and 6 th values, respectively. In order to facilitate the implementation of the receiving station, 2 methods are proposed:

1. when the uplink bandwidth field and the uplink bandwidth expansion field can be set to 3 and 6 numerical values respectively, the total transmission bandwidth of the uplink PPDU is 320 MHz-1; or, when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 3 numerical values respectively, the total transmission bandwidth of the uplink PPDU is 320MHz-1 at this time; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 6 th values, respectively, the combination is reserved.

It can also be expressed as:

when the uplink bandwidth field and the uplink bandwidth expansion field can be set to 3 and 6 numerical values respectively, the total transmission bandwidth of the uplink PPDU is 320-1 MHz; when the uplink bandwidth field and the uplink bandwidth extension field may be set to 2 and 3 values, respectively. This time the reserved combination.

Or, when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 3 numerical values respectively, the total transmission bandwidth of the uplink PPDU is 320-1MHz at this time; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 6 th values, respectively, the combination is reserved.

2. When the uplink bandwidth extension field is set to the 6 th numerical value, the uplink bandwidth field can be set to any value, namely any one of 0 to 3, and the total transmission bandwidth of the uplink PPDU is 320-1 MHz.

When the bandwidth of the EHT TB PPDU is 320MHz-2, the uplink bandwidth field and the uplink bandwidth extension field may be set to 2 and 4 th values, respectively, or the uplink bandwidth field and the uplink bandwidth extension field may be set to 3 and 7 th values, respectively. In order to facilitate the implementation of the receiving station, 2 methods are proposed:

1. when the uplink bandwidth field and the uplink bandwidth expansion field can be set to 3 and 7 numerical values respectively, the total transmission bandwidth of the uplink PPDU is 320 MHz-2; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 4 th values, respectively, the combination is reserved.

Or, when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 4 th values, respectively, the total transmission bandwidth of the uplink PPDU is 320 MHz-2; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 7 th values, respectively, the combination is reserved.

2. When the uplink bandwidth extension field is set to the 7 th numerical value, the uplink bandwidth field can be set to any value, namely any one of 0-3, and the total transmission bandwidth of the uplink PPDU is 320 MHz-2.

Embodiment 1.3:

when the value of the uplink bandwidth expansion field is the 1 st value, the total transmission bandwidth of the uplink PPDU indicated by the uplink bandwidth field and the uplink bandwidth expansion field in a combined manner is the same as the bandwidth indicated by the uplink bandwidth field;

when the value of the uplink bandwidth expansion field is the 2 nd value, the total transmission bandwidth of the uplink PPDU, which is jointly indicated by the uplink bandwidth field and the uplink bandwidth expansion field, is 160 MHz;

when the value of the uplink bandwidth expansion field is the 3 rd value, the total transmission bandwidth of the uplink PPDU indicated by the uplink bandwidth field and the uplink bandwidth expansion field in a combined manner is 320 MHz;

when the value of the upstream bandwidth extension field is the 4 th value, the combination is reserved.

Wherein, the 1 st numerical value to the 4 th numerical value can be any one of {0,1,2,3}, and the 1 st numerical value, the 2 nd numerical value, the 3 rd numerical value, and the 4 th numerical value are different from each other.

Embodiment 1.4:

when the value of the uplink bandwidth expansion field is the 1 st value, the total transmission bandwidth of the uplink PPDU jointly indicated by the uplink bandwidth field and the uplink bandwidth expansion field is the same as the bandwidth indicated by the uplink bandwidth field;

when the value of the uplink bandwidth expansion field is the 2 nd value, the total transmission bandwidth of the uplink PPDU indicated by the uplink bandwidth field and the uplink bandwidth expansion field in a combined manner is 160 MHz;

when the value of the uplink bandwidth expansion field is a value 3, the total transmission bandwidth of the uplink PPDU indicated by the uplink bandwidth field and the uplink bandwidth expansion field in a combined manner is 320 MHz-1;

and when the value of the uplink bandwidth expansion field is the 4 th value, the total transmission bandwidth of the uplink PPDU indicated by the uplink bandwidth field and the uplink bandwidth expansion field in a combined manner is 320 MHz-2.

The 1 st value to the 4 th value may be any one of {0,1,2,3}, and the 1 st value, the 2 nd value, the 3 rd value, and the 4 th value are different from each other.

As can be seen, the above embodiment 1.3 and the above embodiment 1.4 can be summarized as shown in table 5 below.

TABLE 5

In various embodiments of the above method 1, 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, the bandwidth of the uplink EHT TB PPDU 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 following situations are included: the method comprises the steps of determining based on an uplink bandwidth field and an uplink bandwidth expansion field, or determining based on the uplink bandwidth expansion field, or determining based on an EHT/HE indication field, or determining based on the uplink bandwidth field, the uplink bandwidth expansion field and the EHT/HE indication field. For example, when the aforementioned second indication information is the embodiment a-3 of the method a, the bandwidth of the uplink EHT TB PPDU may be determined based on only the EHT/HE indication field. It is understood that the total bandwidth of the uplink PPDU transmission is the sum of the bandwidth of the uplink HE TB PPDU and the bandwidth of the uplink EHT TB PPDU.

Optionally, for various embodiments of the method 1, when the second indication information is implemented by the method c, after receiving the trigger frame, the EHT station may set a bandwidth field of a general signaling field in a preamble of an uplink EHT TB PPDU to a total transmission bandwidth of the uplink PPDU. This is because, in the method c, the EHT/HE indication field is in the user information field of the trigger frame, and the specific bandwidth of the EHT TB PPDU cannot be determined according to the field. However, the user information field of the trigger frame has an RU allocation field, and when the EHT station transmits an uplink EHT TB PPDU, the EHT station transmits the uplink EHT TB PPDU on the corresponding resource according to the indication of the RU allocation field.

Optionally, after receiving the trigger frame, when sending the EHT TB PPDU, the station determines, by using one or more of the uplink bandwidth field, the uplink bandwidth extension field, and the EHT/HE indication field, a bandwidth of a communication signaling field in the uplink physical layer preamble, where the determining includes, for example, the following several cases: the method comprises the steps of determining based on an uplink bandwidth field and an uplink bandwidth expansion field, or determining based on the uplink bandwidth expansion field, or determining based on an EHT/HE indication field, or determining based on the uplink bandwidth field, the uplink bandwidth expansion field and the EHT/HE indication field. Optionally, the bandwidth value needs to be set together through fields such as a Channel Width (Channel Width) and a Channel Center Frequency Segment (CCFS) in an EHT operation element (EHT operation element). Wherein, the channel width field is used to indicate the Basic Service Set (BSS) bandwidth (that is, the maximum bandwidth of PPDU supporting transmission in the BSS), and the CCFS field or fields are used to indicate the center frequency of the BBS bandwidth, so that the associated station knows whether the 320MHz PPDU transmitted by the BSS is 320MHz-1 PPDU or 320MHz-2 PPDU. The unassociated station or the station of the other basic service set can know whether the 320MHz PPDU transmitted by the BSS is 320MHz-1 PPDU or 320MHz-2 PPDU by receiving a management frame, such as a beacon frame, sent by the AP in the basic service set; or by displaying an indication in the trigger frame of whether 320MHz-1 or 320 MHz-2.

Optionally, in the above embodiments 1.1 and 1.3, after receiving the trigger frame, if the bandwidth of the uplink EHT TB PPDU to be transmitted is 320MHz, the EHT station may determine, according to a Channel width (Channel width) field, a CCFS field, and the like of the EHT operation element, whether the 320MHz bandwidth is 320MHz-1 or 320MHz-2, and fill the 320MHz bandwidth in the general signaling field of the preamble of the uplink EHT TB PPDU.

Optionally, in the above embodiments 1.2 and 1.4, after receiving the trigger frame, if the bandwidth of the uplink EHT TB PPDU is 320MHz, the EHT station may fill the general signaling field of the preamble of the uplink EHT TB PPDU according to 320MHz-1 or 320MHz-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).

The above is a description of various embodiments of method 1, and for ease of understanding, embodiments of method 1 will be described below with reference to specific examples. Specifically, the following examples are described by taking embodiment 1.1 of method 1 as an example.

In the following examples, it is assumed that the foregoing second indication information adopts an implementation a-3 of the method a, that is, 320MHz channels may be used to mix and transmit 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 bandwidth of transmission of the uplink PPDU. For example, the total transmission bandwidth of the uplink PPDU is 160MHz, and 2 bits of the EHT/HE indication field of 4 bits are unused; for another example, the total bandwidth of the uplink PPDU transmission is 320MHz, and 0 bits are not used in the EHT/HE indication field of 4 bits. It should be understood that the following examples are also applicable to other embodiments of the second indication information.

It should also be understood that the various embodiments of the aforementioned second indication information also apply to the various embodiments of the aforementioned first indication information.

For ease of description, the following examples assume that the primary 80MHz channel is the first 80MHz channel, the secondary 80MHz channel is the second 80MHz channel, and the secondary 160MHz channel is the third and fourth 80MHz channels. Wherein, the first to the fourth 80MHz channels are sequenced from high to low or from low to high. It should be understood that the primary 80MHz channel may be any 80MHz channel in the frequency band, with the secondary 80MHz channel being located next to the primary 80MHz channel and the secondary 160MHz channel being contiguous.

Example 1.1:

and the AP sends a trigger frame, wherein an uplink bandwidth field (the value of which is 3) in the trigger frame indicates 160MHz, and an uplink bandwidth expansion field (the value of which is the 6 th numerical value) in the trigger frame combines with the total transmission bandwidth of the uplink PPDU indicated by the uplink bandwidth field to be 320 MHz. The value of the EHT/HE indication field in the trigger frame is 0011 (where 0 indicates to transmit HE TB PPDU and 1 indicates to transmit EHT TB PPDU).

After receiving the trigger frame, the HE station or the EHT station transmits HE TB PPDU on the first and second 80MHz channels according to the indication of the EHT/HE indication field, wherein the bandwidth field of the high efficiency signaling field A in the preamble of the HE TB PPDU is set to be 160MHz indicated by the uplink bandwidth field. The EHT station transmits an EHT TB PPDU on the third and fourth 80MHz channels according to the uplink bandwidth field, the uplink bandwidth extension field, and the EHT/HE indication field, where a bandwidth field of a general signaling field in a preamble of the EHT TB PPDU is set to 160MHz (this value may be determined based on the uplink bandwidth field and the uplink bandwidth extension field).

And the AP receives the uplink multi-user PPDU, wherein the uplink multi-user PPDU comprises uplink sub PPDUs sent by one or more stations. The AP then replies with an acknowledgement frame. The acknowledgement frame sent to one or more stations may be sent in a downlink OFDMA format or in a non-HT duplicate transmission format. Referring to fig. 10a, fig. 10a is a timing diagram illustrating that the AP triggers the station to perform uplink data transmission in example 1.1. In fig. 10a, the uplink multi-user PPDU includes an HE TB PPDU with a bandwidth of 160MHz and an EHT TB PPDU with a bandwidth of 160 MHz.

Example 1.2:

and the AP sends a trigger frame, wherein an uplink bandwidth field (the value of which is 2) in the trigger frame indicates 80MHz, and an uplink bandwidth expansion field (the value of which is 2) is combined with the total transmission bandwidth of the uplink PPDU indicated by the uplink bandwidth field and is 160 MHz. The value of the EHT/HE indication field in the trigger frame is 0100 (in this case, the last 2 bits of the EHT/HE indication field are reserved or unused; where 0 indicates transmission of HE TB PPDU and 1 indicates transmission of EHT TB PPDU).

After receiving the trigger frame, the HE station or the EHT station transmits HE TB PPDU on a first 80MHz channel according to the indication of the EHT/HE indication field, wherein the bandwidth field of a high-efficiency signaling field A in the preamble of the HE TB PPDU is set to be 80MHz indicated by the uplink bandwidth field. The EHT station transmits an EHT TB PPDU on a second 80MHz channel according to the uplink bandwidth field, the uplink bandwidth extension field, and the EHT/HE indication field, wherein a bandwidth field of a general signaling field in a preamble of the EHT TB PPDU is set to 80MHz (the value may be determined based on the uplink bandwidth field and the uplink bandwidth extension field).

And the AP receives the uplink multi-user PPDU, wherein the uplink multi-user PPDU comprises uplink sub PPDUs sent by one or more stations. The AP then replies with an acknowledgement frame. The acknowledgement frame sent to one or more stations may be sent in a downlink OFDMA format or in a non-HT duplicate transmission format. Referring to fig. 10b, fig. 10b is a timing diagram illustrating that the AP triggers the station to perform uplink data transmission in example 1.2. In fig. 10b, the uplink multi-user PPDU includes an HE TB PPDU with a bandwidth of 80MHz and an EHT TB PPDU with a bandwidth of 80 MHz.

Example 1.3:

and the AP sends a trigger frame, wherein an uplink bandwidth field (the value of which is 2) in the trigger frame indicates 80MHz, and an uplink bandwidth expansion field (the value of which is 1 st numerical value) is combined with the transmission total bandwidth of the uplink PPDU indicated by the uplink bandwidth field and is 80 MHz. The value of the EHT/HE indication field in the trigger frame is 1000 (in this case, the last 3 bits of the EHT/HE indication field are reserved or not used; where 0 indicates to transmit the HE TB PPDU and 1 indicates to transmit the EHT TB PPDU).

After receiving the trigger frame, the multiple stations transmit an EHT TB PPDU on a first 80MHz channel according to the uplink bandwidth field, the uplink bandwidth extension field, and the EHT/HE indication field, where a bandwidth field of a general signaling field in a preamble of the EHT TB PPDU is set to 80MHz (the value is determined based on the EHT/HE indication field).

And the AP receives the uplink multi-user PPDU, wherein the uplink multi-user PPDU comprises uplink sub PPDUs sent by one or more stations. The AP then replies with an acknowledgement frame. The acknowledgement frame sent to one or more stations may be sent in a downlink OFDMA format or in a non-HT duplicate transmission format. Referring to fig. 10c, fig. 10c is a timing diagram illustrating that the AP triggers the station to perform uplink data transmission in example 1.3. In fig. 10c, the uplink multi-user PPDU includes an EHT TB PPDU with a bandwidth of 80 MHz.

Example 1.4:

and the AP sends a trigger frame, wherein an uplink bandwidth field (the value of which is 2) in the trigger frame indicates 80MHz, and an uplink bandwidth expansion field (the value of which is 3 rd numerical value) in the trigger frame combines with the total transmission bandwidth of the uplink PPDU indicated by the uplink bandwidth field to be 320 MHz. The value of the EHT/HE indication field in the trigger frame is 0111 (wherein 0 indicates to transmit HE TB PPDU and 1 indicates to transmit EHT TB PPDU).

After receiving the trigger frame, the HE site or the EHT site transmits an HE TB PPDU on a first 80MHz channel according to the indication of the EHT/HE indication field, wherein a bandwidth field of a high efficiency signaling field A in a preamble of the HE TB PPDU is set as 80MHz indicated by an uplink bandwidth field. And the EHT station transmits the EHT TB PPDU on the second, third and fourth 80MHz 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 320MHz (the value is determined based on the uplink bandwidth field). Since the bandwidth of the 240MHz type is not supported in the EHT standard, in this case, the bandwidth field of the general signaling field in the preamble of the EHT TB PPDU needs to be set to 320MHz, but the actual transmission bandwidth of the EHT TB PPDU is also 240 MHz.

And the AP receives the uplink multi-user PPDU, wherein the uplink multi-user PPDU comprises uplink sub PPDUs sent by one or more stations. The AP then replies with an acknowledgement frame. The acknowledgement frame sent to one or more stations may be sent in a downlink OFDMA format or in a non-HT duplicate transmission format. Referring to fig. 10d, fig. 10d is a timing diagram illustrating that the AP triggers the station to perform uplink data transmission in example 1.4. In fig. 10d, the uplink multi-user PPDU includes an HE TB PPDU with a bandwidth of 80MHz and an EHT TB PPDU with an actual transmission bandwidth of 240 MHz.

Example 1.5:

and the AP sends a trigger frame, wherein an uplink bandwidth field (the value of which is 2) in the trigger frame indicates 80MHz, and an uplink bandwidth expansion field (the value of which is 3 rd numerical value) in the trigger frame combines with the total transmission bandwidth of the uplink PPDU indicated by the uplink bandwidth field to be 320 MHz. The value of the EHT/HE indication field in the trigger frame is 0011 (where 0 indicates to transmit HE TB PPDU and 1 indicates to transmit EHT TB PPDU).

After receiving the trigger frame, the HE station or the EHT station transmits HE TB PPDU on a first 80MHz channel according to the indication of the EHT/HE indication field, wherein the bandwidth field of a high-efficiency signaling field A in the preamble of the HE TB PPDU is set to be 80MHz indicated by the uplink bandwidth field. And the EHT station transmits the EHT TB PPDU on the third and the fourth 80MHz channels according to the uplink bandwidth field, the uplink bandwidth extension field and the EHT/HE indication field, wherein the bandwidth field of the universal signaling field in the preamble of the EHT TB PPDU is set to be 160MHz (the value is determined based on the EHT/HE indication field). It should be understood that the EHT/HE indication field indicates that HE TB PPDU is transmitted on the first and second 80MHz channels, but the bandwidth of the HE TB PPDU indicated by the uplink bandwidth field is only 80MHz, so the second 80MHz channel is punctured and only the first 80MHz channel can transmit the HE TB PPDU.

And the AP receives the uplink multi-user PPDU, wherein the uplink multi-user PPDU comprises uplink sub PPDUs sent by one or more stations. The AP then replies with an acknowledgement frame. The acknowledgement frame sent to one or more stations may be sent in a downlink OFDMA format or in a non-HT duplicate transmission format. Referring to fig. 10e, fig. 10e is a timing diagram illustrating that the AP triggers the station to perform uplink data transmission in example 1.5. In fig. 10e, the second 80MHz channel punctured uplink multi-user PPDU includes an HE TB PPDU with a bandwidth of 80MHz and an EHT TB PPDU with a bandwidth of 160 MHz.

The method 2 comprises the following steps: the uplink bandwidth extension field is used for indicating the bandwidth of the EHT TB PPDU by the uplink bandwidth field in the common information field of the joint trigger frame. In the following embodiments 2.1, 2.2, and 2.3, the uplink bandwidth extension field occupies 2 bits; the uplink bandwidth extension field occupies 3 bits in embodiment 2.4 described below.

Embodiment 2.1:

and when the value of the uplink bandwidth field is 0, the uplink bandwidth expansion field is a reserved field, and the bandwidth of the EHT TB PPDU indicated by the combination is 20 MHz. In this case, the maximum possible total bandwidth for transmission of the uplink PPDU is 20 MHz.

The above sentence is also understood as:

when the value of the uplink bandwidth field is 0 and the value of the uplink bandwidth expansion field is 1 st value, the total transmission bandwidth of the EHT TB PPDU indicated by the combination is 20 MHz;

the value of the uplink bandwidth field is 0, the value of the uplink bandwidth expansion field is 2 nd value, and the value combination is reserved (not used);

the value of the uplink bandwidth field is 0, the value of the uplink bandwidth expansion field is 3, and the value combination is reserved (not used);

the value of the uplink bandwidth field is 0, the value of the uplink bandwidth expansion field is a 4 th numerical value, and the value combination is reserved (not used);

or the following steps:

when the value of the uplink bandwidth field is 0 and the value of the uplink bandwidth expansion field is 1 st value, the transmission bandwidth of the EHT TB PPDU indicated by the combination is 20 MHz;

the value of the uplink bandwidth field is 0, the value of the uplink bandwidth expansion field is a2 nd numerical value, and the transmission bandwidth of the EHT TB PPDU indicated by the combination is 80 MHz; at this time, the combinationCan be used forThe method is used for supporting mixed uplink transmission of 20MHz uplink HE PPDU and 80MHz uplink EHT PPDU. For example, the uplink HE PPDU is transmitted at the primary 20MHz, the uplink EHT PPDU is transmitted at one 80MHz of the secondary 160MHz, and optionally, frequency bands within 320MHz except for the primary 20MHz and the 80MHz of the secondary 160MHz are punctured. The combination may of course still support non-a-PPDU transmission of the corresponding bandwidth, such as uplink HE PPDU, and then uplink EHT PPDU.

The value of the uplink bandwidth field is 0, the value of the uplink bandwidth expansion field is a3 rd numerical value, and the transmission bandwidth of the EHT TB PPDU indicated by the combination is 160 MHz; at this time, the combination can be used to support mixed uplink transmission of 20MHz uplink HE PPDU and 160MHz uplink EHT PPDU. For example, the uplink HE PPDU is transmitted on the primary 20MHz, the uplink EHT PPDU is transmitted on the secondary 160MHz, and optionally, frequency bands except for the primary 20MHz and the secondary 160MHz within 320MHz are punctured. The combination may of course still support non-a-PPDU transmission of the corresponding bandwidth, such as uplink HE PPDU, and then uplink EHT PPDU.

it is worth noting that: the mixed uplink transmission of the 20MHz uplink HE PPDU and the 80MHz uplink EHT PPDU may not be allowed in the protocol, and thus may also be

the value of the uplink bandwidth field is 0, the value of the uplink bandwidth expansion field is a2 nd numerical value, and the transmission bandwidth of the EHT TB PPDU indicated by the combination is 160 MHz; at this time, the combination can be used to support mixed uplink transmission of 20MHz uplink HE PPDU and 160MHz uplink EHT PPDU. The combination may of course still support non-a-PPDU transmission of the corresponding bandwidth, such as uplink HE PPDU, and then uplink EHT PPDU.

The value of the uplink bandwidth field is 0, the value of the uplink bandwidth expansion field is 3 rd value,

the value combination is reserved (not used);

the value of the uplink bandwidth field is 0, the value of the uplink bandwidth expansion field is a 4 th value, and the value combination is reserved (not used);

and when the value of the uplink bandwidth field is 1, the uplink bandwidth expansion field is a reserved field, and the bandwidth of the EHT TB PPDU indicated by the combination is 40 MHz. In this case, the maximum possible total bandwidth for transmission of the uplink PPDU is 40 MHz.

The above sentence is also understood as:

and when the value of the uplink bandwidth field is 1 and the value of the uplink bandwidth expansion field is the 1 st value, the bandwidth of the EHT TB PPDU indicated by the combination is 40 MHz. In this case, the maximum possible total bandwidth for transmission of the uplink PPDU is 40 MHz.

The value of the uplink bandwidth field is 1, the value of the uplink bandwidth expansion field is 2 nd value, and the value combination is reserved (not used);

the value of the uplink bandwidth field is 1, the value of the uplink bandwidth expansion field is a3 rd value, and the value combination is reserved (not used);

the value of the uplink bandwidth field is 1, the value of the uplink bandwidth expansion field is a 4 th numerical value, and the value combination is reserved (not used);

or the following steps:

when the value of the uplink bandwidth field is 1 and the value of the uplink bandwidth expansion field is the 1 st value, the transmission bandwidth of the EHT TB PPDU indicated by the combination is 40 MHz;

the value of the uplink bandwidth field is 1, the value of the uplink bandwidth expansion field is a2 nd numerical value, and the transmission bandwidth of the EHT TB PPDU indicated by the combination is 80 MHz; at this time, the combination can be used to support mixed uplink transmission of 40MHz uplink HE PPDU and 80MHz uplink EHT PPDU. The combination may of course still support non-a-PPDU transmission of the corresponding bandwidth, such as uplink HE PPDU, and then uplink EHT PPDU.

The value of the uplink bandwidth field is 1, the value of the uplink bandwidth expansion field is a3 rd numerical value, and the transmission bandwidth of the EHT TB PPDU indicated by the combination is 160 MHz; at this time, the combination can be used to support mixed uplink transmission of 40MHz uplink HE PPDU and 160MHz uplink EHT PPDU. The combination may of course still support non-a-PPDU transmission of the corresponding bandwidth, such as uplink HE PPDU, and then uplink EHT PPDU.

it is worth noting that: the mixed uplink transmission of the 40MHz uplink HE PPDU and the 80MHz uplink EHT PPDU may or may not be allowed in the protocol, and thus may also be

the value of the uplink bandwidth field is 1, the value of the uplink bandwidth expansion field is a2 nd numerical value, and the transmission bandwidth of the EHT TB PPDU indicated by the combination is 160 MHz; at this time, the combination can be used to support mixed uplink transmission of 40MHz uplink HE PPDU and 160MHz uplink EHT PPDU. The combination may of course still support non-a-PPDU transmission of the corresponding bandwidth, such as uplink HE PPDU, and then uplink EHT PPDU.

and when the value of the uplink bandwidth field is 2 and the value of the uplink bandwidth extension field is the 1 st value, the bandwidth of the EHT TB PPDU indicated by the combination is 80 MHz. In this case, the maximum possible total bandwidth for transmission of the uplink PPDU is 160MHz (80MHz +80 MHz).

And when the value of the uplink bandwidth field is 2 and the value of the uplink bandwidth extension field is the 2 nd value, the bandwidth of the EHT TB PPDU indicated by the combination is 160 MHz. In this case, the maximum possible total bandwidth for transmission of the uplink PPDU is 320 MHz. This is because there is no 240MHz bandwidth (80MHz +160MHz) in the EHT standard, so 320MHz of the maximum possible total transmission bandwidth of the uplink PPDU can be regarded as 80MHz punctured, and its actual transmission bandwidth is 240 MHz.

And when the value of the uplink bandwidth field is 2 and the value of the uplink bandwidth extension field is a3 rd value, the bandwidth of the EHT TB PPDU indicated by the combination is 320 MHz. In this case, the maximum possible total bandwidth for transmission of the uplink PPDU is 320 MHz. It should be appreciated that 80MHz +320MHz exceeds 320MHz, but the maximum possible total bandwidth of transmission of the upstream PPDU is still 320 MHz.

When the value of the uplink bandwidth field is 2 and the value of the uplink bandwidth extension field is 4, the combination is reserved.

And when the value of the uplink bandwidth field is 3 and the value of the uplink bandwidth extension field is the 1 st value, the bandwidth of the EHT TB PPDU indicated by the combination is 80 MHz. In this case, the maximum possible total bandwidth for transmission of the uplink PPDU is 320 MHz. This is because there is no 240MHz bandwidth (160MHz +80MHz) in the EHT standard.

And when the value of the uplink bandwidth field is 3 and the value of the uplink bandwidth extension field is a2 nd value, the bandwidth of the EHT TB PPDU indicated by the combination is 160 MHz. In this case, the maximum possible total bandwidth for transmission of the uplink PPDU is 320MHz (160MHz +160 MHz).

And when the value of the uplink bandwidth field is 3 and the value of the uplink bandwidth extension field is the 3 rd value, the bandwidth of the EHT TB PPDU indicated by the combination is 320 MHz. In this case, the maximum possible total bandwidth for uplink PPDU transmission is 320 MHz. It should be appreciated that 160MHz +320MHz exceeds 320MHz, but the maximum possible total bandwidth of transmission for the upstream PPDU is still 320 MHz.

When the value of the uplink bandwidth field is 3 and the value of the uplink bandwidth extension field is 4, the combination is reserved.

In embodiment 2.1, the uplink bandwidth extension field occupies 2 bits, and may represent 4 values from 0 to 3. The 1 st value to the 4 th value may be any one of {0,1,2,3} respectively, and the 1 st value, the 2 nd value, the 3 rd value, and the 4 th value are different from each other. For example, the 1 st value is 0, the 2 nd value is 1, the 3 rd value is 2, and the 4 th value is 3.

It can be seen that embodiment 2.1 of method 2 differs from embodiment 1.1 of method 1 described above primarily in that: the bandwidth of the EHT TB PPDU in embodiment 2.1 may be smaller than the value indicated by the uplink bandwidth field.

Embodiment 2.2:

The above sentence is also understood as:

or the following steps:

when the value of the uplink bandwidth field is 0 and the value of the uplink bandwidth expansion field is a1 st value, the transmission bandwidth of the EHT TB PPDU indicated by the joint is 20 MHz;

the value of the uplink bandwidth field is 0, the value of the uplink bandwidth expansion field is a2 nd value, and the transmission bandwidth of the EHT TB PPDU indicated by the joint indication is 80 MHz; at this time, the combination can be used to support mixed uplink transmission of 20MHz uplink HE PPDU and 80MHz uplink EHT PPDU. For example, the uplink HE PPDU is transmitted at the primary 20MHz, the uplink EHT PPDU is transmitted at one 80MHz of the secondary 160MHz, and optionally, frequency bands within 320MHz except for the primary 20MHz and the 80MHz of the secondary 160MHz are punctured. The combination may of course still support non-a-PPDU transmission of the corresponding bandwidth, such as uplink HE PPDU, and then uplink EHT PPDU.

The value of the uplink bandwidth field is 0, the value of the uplink bandwidth expansion field is a3 rd numerical value, and the transmission bandwidth of the EHT TB PPDU indicated by the combination is 160 MHz; at this time, the combination can be used to support mixed uplink transmission of 20MHz uplink HE PPDU and 160MHz uplink EHT PPDU. For example, the uplink HE PPDU is transmitted on the primary 40MHz, the uplink EHT PPDU is transmitted on the secondary 160MHz, and optionally, frequency bands except for the primary 20MHz and the secondary 160MHz within 320MHz are punctured. The combination may of course still support non-a-PPDU transmission of the corresponding bandwidth, such as uplink HE PPDU, and then uplink EHT PPDU.

The above sentence is also understood as:

or the following steps:

and when the value of the uplink bandwidth field is 1 and the value of the uplink bandwidth expansion field is the 1 st value, the transmission bandwidth of the EHT TB PPDU indicated by the combination is 40 MHz.

The value of the uplink bandwidth field is 1, the value of the uplink bandwidth expansion field is a2 nd numerical value, and the transmission bandwidth of the EHT TB PPDU indicated by the combination is 80 MHz; at this time, the combination can be used to support mixed uplink transmission of 40MHz uplink HE PPDU and 80MHz uplink EHT PPDU. For example, the uplink HE PPDU occupies 40MHz, the uplink EHT PPDU occupies 80MHz of the secondary 160MHz, and optionally, frequency bands except for the 80MHz of the primary 40MHz and the secondary 160MHz within 320MHz are punctured. The combination may of course still support non-a-PPDU transmission of the corresponding bandwidth, such as uplink HE PPDU, and then uplink EHT PPDU.

The value of the uplink bandwidth field is 1, the value of the uplink bandwidth expansion field is a3 rd numerical value, and the transmission bandwidth of the EHT TB PPDU indicated by the combination is 160 MHz; at this time, the 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 40MHz, the uplink EHT PPDU occupies 160MHz, and optionally, frequency bands except for 40MHz and 160MHz in 320MHz are punctured. The combination may of course still support non-a-PPDU transmission of the corresponding bandwidth, such as uplink HE PPDU, and then uplink EHT PPDU.

The value of the uplink bandwidth field is 1, the value of the uplink bandwidth expansion field is 4 th value, and the value combination is reserved (not used).

It is worth noting that: the mixed uplink transmission of the 40MHz uplink HE PPDU and the 80MHz uplink EHT PPDU may or may not be allowed in the protocol, and therefore, it may also be:

The value of the uplink bandwidth field is 1, the value of the uplink bandwidth expansion field is 3, and the value combination is reserved (not used).

And when the value of the uplink bandwidth field is 2 and the value of the uplink bandwidth expansion field is the 3 rd value, the bandwidth of the EHT TB PPDU indicated by the combination is 320 MHz-1. In this case, the maximum possible total bandwidth for transmission of the uplink PPDU is 320 MHz. It should be appreciated that 80MHz +320MHz exceeds 320MHz, but the maximum possible total bandwidth of transmission of the upstream PPDU is still 320 MHz.

And when the value of the uplink bandwidth field is 2 and the value of the uplink bandwidth extension field is a 4 th value, the bandwidth of the EHT TB PPDU indicated by the combination is 320 MHz-2. In this case, the maximum possible total bandwidth for transmission of the uplink PPDU is 320 MHz.

And when the value of the uplink bandwidth field is 3 and the value of the uplink bandwidth extension field is the 3 rd value, the bandwidth of the EHT TB PPDU indicated by the combination is 320 MHz-1. In this case, the maximum possible total bandwidth for uplink PPDU transmission is 320 MHz. It should be appreciated that 160MHz +320MHz exceeds 320MHz, but the maximum possible total bandwidth of transmission for the upstream PPDU is still 320 MHz.

And when the value of the uplink bandwidth field is 3 and the value of the uplink bandwidth extension field is a 4 th value, the bandwidth of the EHT TB PPDU indicated by the combination is 320 MHz-2. In this case, the maximum possible total bandwidth for uplink PPDU transmission is 320 MHz. It should be appreciated that 160MHz +320MHz exceeds 320MHz, but the maximum possible total bandwidth of transmission for the upstream PPDU is still 320 MHz.

In embodiment 2.2, the uplink bandwidth extension field occupies 2 bits, and may represent 4 values from 0 to 3. The 1 st value to the 4 th value may be any one of {0,1,2,3} respectively, and the 1 st value, the 2 nd value, the 3 rd value, and the 4 th value are different from each other. For example, the 1 st value is 0, the 2 nd value is 1, the 3 rd value is 2, and the 4 th value is 3.

It can be seen that the values and meanings of the uplink bandwidth extension field in the above embodiment 2.1 and the above embodiment 2.2 can be summarized as shown in the following table 6.

TABLE 6

TABLE 6a

TABLE 6b

In embodiment 2.1, when the bandwidth of the EHT TB PPDU is 320MHz, the uplink bandwidth field and the uplink bandwidth extension field may be set to 2 and 3 rd values, respectively, or the uplink bandwidth field and the uplink bandwidth extension field may be set to 3 and 3 rd values, respectively. In order to facilitate the receiving station to implement easily, or to provide more reserved combinations or unused values, 2 methods are proposed:

1. when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 3 rd numerical values respectively, the bandwidth of the EHT TB PPDU is 320 MHz; or, when the uplink bandwidth field and the uplink bandwidth extension field may be set to 2 and 3 th values, respectively, the bandwidth of the EHT TB PPDU is 320MHz at this time; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 3 rd values, respectively, the combination is reserved.

It can also be expressed as:

when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 3 rd numerical values respectively, the bandwidth of the EHT TB PPDU is 320 MHz; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 3 rd values, respectively, the combination is reserved.

Or, when the uplink bandwidth field and the uplink bandwidth extension field may be set to 2 and 3 th values, respectively, the bandwidth of the EHT TB PPDU is 320MHz at this time; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 3 rd values, respectively, the combination is reserved.

2. When the uplink bandwidth extension field is set to the 3 rd numerical value, the uplink bandwidth field can be set to any value, namely any one of 0-3, and at the moment, the bandwidth of the EHT TB PPDU is 320 MHz.

In embodiment 2.2, when the bandwidth of the EHT TB PPDU is 320MHz-1, the uplink bandwidth field and the uplink bandwidth extension field may be set to 2 and 3 th values, respectively, or the uplink bandwidth field and the uplink bandwidth extension field may be set to 3 and 3 rd values, respectively. In order to facilitate the implementation of the receiving station, 2 methods are proposed:

1. when the uplink bandwidth field and the uplink bandwidth expansion field can be set to 3 and 3 rd numerical values respectively, the bandwidth of the EHT TB PPDU is 320 MHz-1; or, when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 3 numerical values respectively, the bandwidth of the EHT TB PPDU is 320 MHz-1; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 3 rd values, respectively, the combination is reserved.

It can also be expressed as:

when the uplink bandwidth field and the uplink bandwidth expansion field can be set to 3 and 3 rd numerical values respectively, the bandwidth of the EHT TB PPDU is 320-1 MHz; when the uplink bandwidth field and the uplink bandwidth extension field may be set to 2 and 3 values, respectively. This time the reserved combination.

Or when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 3 numerical values respectively, the bandwidth of the EHT TB PPDU is 320-1MHz at this time; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 3 rd values, respectively, the combination is reserved.

2. When the uplink bandwidth extension field is set to the 3 rd numerical value, the uplink bandwidth field can be set to any value, namely any one of 0-3, and the bandwidth of the EHT TB PPDU is 320 MHz-1.

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

1. when the uplink bandwidth field and the uplink bandwidth expansion field can be set to 3 and 4 numerical values respectively, the bandwidth of the EHT TB PPDU is 320 MHz-2; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 4 th values, respectively, the combination is reserved.

Or, when the uplink bandwidth field and the uplink bandwidth extension field can be set to 2 and 4 th values, respectively, the bandwidth of the EHT TB PPDU is 320 MHz-2; when the uplink bandwidth field and the uplink bandwidth extension field can be set to 3 and 4 th values, respectively, the combination is reserved.

2. When the uplink bandwidth extension field is set to the 4 th numerical value, the uplink bandwidth field can be set to any value, namely any one of 0-3, and the bandwidth of the EHT TB PPDU is 320 MHz-2.

In embodiment 2.2, for the case of EHT TB PPDU bandwidth of 320MHz-1 or 320MHz-2, respectively, method 1 of the 2 methods proposes to indicate EHT TB PPDU bandwidth by one combination and reserve (unused) the other combination.

As mentioned above, it is contemplated that existing 160MHz 802.11ax stations or 802.11ac stations may merge legacy preambles at every 20MHz of 160MHz, such as the L-SIG field, or may merge preambles of duplicate transmissions at every 20MHz of 160MHz, such as the HE-SIG-a field in 802.11ax, or the VHT-SIG-a field of 802.11ac, suggesting that the upstream PPDU of the primary 160MHz transmission does not allow for hybrid transmissions, which would otherwise result in erroneous reception of the 802.11ax or 802.11ac station preambles supporting 160 MHz. At this time, the frequency segment (bandwidth granularity of uplink sub PPDU transmission) size of the EHT/HE indication field needs to be 160 MHz. Therefore, the uplink mixed transmission PPDU (a-PPDU) cannot include an uplink HE PPDU and an uplink EHT PPDU at the same time in the primary 160MHz, for example, in a 160MHz bandwidth, the uplink HE PPDU is transmitted on the primary 80MHz and the uplink EHT PPDU is transmitted on the secondary 80MHz, or the uplink EHT PPDU is transmitted on the primary 80MHz and the uplink HE PPDU is transmitted on the secondary 80 MHz; for example, within a bandwidth of 320MHz, the uplink HE PPDU is transmitted on the main 80MHz, the uplink EHT PPDU is transmitted on the secondary 80MHz and the uplink EHT PPDU is transmitted on the secondary 160MHz, or the uplink EHT PPDU is transmitted on the main 80MHz, the uplink HE PPDU is transmitted on the secondary 80MHz and the uplink EHT PPDU is transmitted on the secondary 160 MHz; therefore, the design of the uplink bandwidth extension field of the trigger frame or the uplink EHT PPDU bandwidth does not need to support the mixed transmission of the uplink HE PPDU and the uplink EHT PPDU existing in the main 160MHz, such as the aforementioned 4 kinds of mixed transmission.

Embodiment 2.3:

when the value of the uplink bandwidth expansion field is a value 1, the bandwidth of the EHT TB PPDU indicated by the uplink bandwidth field and the uplink bandwidth expansion field in a combined manner is the same as the bandwidth indicated by the uplink bandwidth field;

when the value of the uplink bandwidth expansion field is a value 2, the bandwidth of the EHT TB PPDU indicated by the uplink bandwidth field and the uplink bandwidth expansion field in a combined manner is 80 MHz;

when the value of the uplink bandwidth expansion field is a value 3, the bandwidth of the EHT TB PPDU indicated by the uplink bandwidth field and the uplink bandwidth expansion field in a combined manner is 160 MHz;

and when the value of the uplink bandwidth expansion field is the 4 th value, the bandwidth of the EHT TB PPDU indicated by the uplink bandwidth field and the uplink bandwidth expansion field in a combined mode is 320 MHz.

In this embodiment 2.3, the uplink bandwidth extension field occupies 2 bits, and may represent 4 values from 0 to 3. The 1 st value to the 4 th value may be any one of {0,1,2,3} respectively, and the 1 st value, the 2 nd value, the 3 rd value, and the 4 th value are different from each other. For example, the 1 st value is 0, the 2 nd value is 1, the 3 rd value is 2, and the 4 th value is 3.

It can be seen that the values and meanings of the uplink bandwidth extension field in this embodiment 2.3 can be summarized as shown in table 7 below.

TABLE 7

Embodiment 2.4:

when the value of the uplink bandwidth expansion field is a value 4, the bandwidth of the EHT TB PPDU indicated by the uplink bandwidth field and the uplink bandwidth expansion field in a combined manner is 320 MHz-1;

when the value of the uplink bandwidth expansion field is a value of 5, the bandwidth of the EHT TB PPDU indicated by the uplink bandwidth field and the uplink bandwidth expansion field in a combined manner is 320 MHz-2; other values are retained.

In embodiment 2.4, the uplink bandwidth extension field occupies 3 bits, and may represent 8 values from 0 to 7. The 1 st value to the 5 th value may be any one of {0,1,2,3,4,5,6,7} respectively, and the 1 st value, the 2 nd value, the 3 rd value, the 4 th value, and the 5 th value are different from each other. For example, a1 st value of 0, a2 nd value of 1, a3 rd value of 2, a 4 th value of 3, a 5 th value of 4, and other values (i.e., 5,6,7) are retained.

It can be seen that the values and meanings of the uplink bandwidth extension field in this embodiment 2.4 can be summarized as shown in table 8 below.

TABLE 8

In various embodiments of the above method 2, if the station transmits an uplink HE TB PPDU, its bandwidth is the value indicated by the uplink bandwidth field. And if the station transmits the uplink EHT TB PPDU, the bandwidth of the station is the bandwidth jointly indicated by the uplink bandwidth field and the uplink bandwidth expansion field.

Optionally, after receiving the trigger frame, when sending the EHT TB PPDU, the station determines the bandwidth of the communication signaling field in the preamble of the uplink physical layer through the uplink bandwidth field and the uplink bandwidth extension field, and optionally sets the bandwidth value through the Channel Width (Channel Width), CCFS, and other fields in the EHT operation element. Wherein the channel width field is used to indicate the BSS bandwidth (i.e. the maximum bandwidth of PPDUs supporting transmission in the BSS), and one or more CCFS fields are used to indicate the center frequency of the BBS bandwidth, so that the associated station knows whether the 320MHz PPDU transmitted by the BSS is 320MHz-1 PPDU or 320MHz-2 PPDU. The unassociated station or the station of the other basic service set may learn whether the 320MHz PPDU transmitted by the BSS is a 320MHz-1 PPDU or a 320MHz-2 PPDU by receiving a management frame, such as a beacon frame, sent by the AP in the basic service set; or by displaying an indication in the trigger frame of whether 320MHz-1 or 320 MHz-2.

Optionally, in the above embodiment 2.1 and embodiment 2.3, after receiving the trigger frame, if the bandwidth of the uplink EHT TB PPDU is 320MHz, the EHT station may determine whether the 320MHz bandwidth is 320MHz-1 or 320MHz-2 according to a bandwidth (bandwidth) field of an EHT operation element, a CCFS field, and the like, and fill the general signaling field of the preamble of the uplink EHT TB PPDU.

Optionally, in the above embodiments 2.2 and 2.4, after receiving the trigger frame, if the bandwidth of the uplink EHT TB PPDU is 320MHz, the EHT station may fill the general signaling field of the preamble of the uplink EHT TB PPDU according to 320MHz-1 or 320MHz-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).

The foregoing is a description of various embodiments of method 2, and for the purposes of understanding, embodiments of method 2 will now be described with reference to specific examples. Specifically, the following examples are described by taking embodiment 2.1 of method 2 as an example.

In the following examples, it is assumed that the foregoing second indication information adopts an implementation a-3 of the method a, that is, 320MHz channels may be used to mix and transmit 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 bandwidth of transmission of the uplink PPDU. For example, the total transmission bandwidth of the uplink PPDU is 160MHz, and 2 bits of the EHT/HE indication field of 4 bits are unused; for another example, the total bandwidth of the uplink PPDU transmission is 320MHz, and 0 bits are not used in the EHT/HE indication field of 4 bits. It should be understood that the following examples are also applicable to other embodiments of the second indication information. It should also be understood that the various embodiments of the aforementioned second indication information are applicable to the various embodiments of the aforementioned first indication information.

Example 2.1:

and the AP sends a trigger frame, wherein an uplink bandwidth field (the value of which is 3) in the trigger frame indicates 160MHz, and the bandwidth of the EHT TB PPDU indicated by an uplink bandwidth extension field (the value of which is 2 nd value) combined with the uplink bandwidth field is 160 MHz. The value of the EHT/HE indication field in the trigger frame is 0011 (where 0 indicates to transmit HE TB PPDU and 1 indicates to transmit EHT TB PPDU).

After receiving the trigger frame, the HE station or the EHT station transmits HE TB PPDU on the first and second 80MHz channels according to the indication of the EHT/HE indication field, wherein the bandwidth field of the high efficiency signaling field A in the preamble of the HE TB PPDU is set to be 160MHz indicated by the uplink bandwidth field. The EHT site sets the bandwidth field of the general signaling field in the preamble of the EHT TB PPDU to 160MHz (the 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 80MHz channels according to the indication of the EHT/HE indication field.

And the AP receives the uplink multi-user PPDU, wherein the uplink multi-user PPDU comprises uplink sub PPDUs sent by one or more stations. The AP then replies with an acknowledgement frame. The acknowledgement frame sent to one or more stations may be sent in a downlink OFDMA format or in a non-HT duplicate transmission format.

Example 2.2:

and the AP sends a trigger frame, wherein an uplink bandwidth field (the value of which is 2) in the trigger frame indicates 80MHz, and an uplink bandwidth expansion field (the value of which is 1 st value) is combined with the bandwidth of the EHT TB PPDU indicated by the uplink bandwidth field and indicates 80 MHz. The value of the EHT/HE indication field in the trigger frame is 0100 (where 0 indicates to transmit HE TB PPDU and 1 indicates to transmit EHT TB PPDU).

After receiving the trigger frame, the HE station or the EHT station transmits HE TB PPDU on a first 80MHz channel according to the indication of the EHT/HE indication field, wherein the bandwidth field of a high-efficiency signaling field A in the preamble of the HE TB PPDU is set to be 80MHz indicated by the uplink bandwidth field. The EHT site sets a bandwidth field of a general signaling field in a preamble of the EHT TB PPDU to 80MHz (the value is the value indicated by the uplink bandwidth field and the uplink bandwidth extension field jointly) according to the uplink bandwidth field and the uplink bandwidth extension field, and transmits the EHT TB PPDU on a second 80MHz channel according to the indication of the EHT/HE indication field.

And the AP receives an uplink multi-user PPDU, wherein the uplink multi-user PPDU comprises uplink sub PPDUs sent by one or more sites. The AP then replies with an acknowledgement frame. The acknowledgement frame sent to one or more stations may be sent in a downlink OFDMA format or in a non-HT duplicate transmission format.

Example 2.3:

and the AP sends a trigger frame, wherein an uplink bandwidth field (the value of which is 2) in the trigger frame indicates 80MHz, and an uplink bandwidth expansion field (the value of which is 1 st value) is combined with the bandwidth of the EHT TB PPDU indicated by the uplink bandwidth field and indicates 80 MHz. The value of the EHT/HE indication field in the trigger frame is 1000 (where 0 indicates to transmit HE TB PPDU and 1 indicates to transmit EHT TB PPDU). The trigger frame does not include a user information field of the scheduling HE station, that is, the value of the AID12 field in the user information field is not equal to the association identifier of any HE station; and no resource on the second 80MHz channel is allocated to the EHT station in the trigger frame.

After receiving the trigger frame, the multiple stations set the bandwidth field of the universal signaling field in the preamble of the EHT TB PPDU to 80MHz (the 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 transmit the EHT TB PPDU on the first 80MHz channel according to the indication of the EHT/HE indication field.

Example 2.4:

and the AP sends a trigger frame, wherein an uplink bandwidth field (the value of which is 2) in the trigger frame indicates 80MHz, and an uplink bandwidth expansion field (the value of which is 3 rd numerical value) in combination with the bandwidth of the EHT TB PPDU indicated by the uplink bandwidth field is 320 MHz. The value of the EHT/HE indication field in the trigger frame is 0111 (wherein 0 indicates to transmit HE TB PPDU and 1 indicates to transmit EHT TB PPDU).

After receiving the trigger frame, the HE station or the EHT station transmits HE TB PPDU on a first 80MHz channel according to the indication of the EHT/HE indication field, wherein the bandwidth field of a high-efficiency signaling field A in the preamble of the HE TB PPDU is set to be 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 320MHz (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 80MHz channels according to the indication of the EHT/HE indication field.

Example 2.5:

and the AP sends a trigger frame, wherein an uplink bandwidth field (the value of which is 3) in the trigger frame indicates 160MHz, and the bandwidth of the EHT TB PPDU indicated by an uplink bandwidth extension field (the value of which is 1 st value) combined with the uplink bandwidth field is 80 MHz. The value of the EHT/HE indication field in the trigger frame is 0011 or 0001 (where 0 indicates to transmit HE TB PPDU and 1 indicates to transmit EHT TB PPDU).

After receiving the trigger frame, the HE station or the EHT station transmits HE TB PPDU on the first and second 80MHz channels according to the indication of the EHT/HE indication field, wherein the bandwidth field of the high efficiency signaling field A in the preamble of the HE TB PPDU is set to be 160MHz indicated by the uplink bandwidth field. The EHT site sets a bandwidth field of a general signaling field in a preamble of the EHT TB PPDU to 80MHz (the value is the value indicated by the uplink bandwidth field and the uplink bandwidth extension field jointly) according to the uplink bandwidth field and the uplink bandwidth extension field, and transmits the EHT TB PPDU on a fourth 80MHz channel according to the indication of the EHT/HE indication field.

It should be understood that when the value of the EHT/HE indication field is 0001, it indicates that HE TB PPDU is transmitted on the first, second, and third 80MHz channels, but the bandwidth of the HE TB PPDU indicated by the uplink bandwidth field is only 160MHz, so the third 80MHz channel is punctured and only the first and second 80MHz 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 80MHz channels, but the bandwidth of the EHT TB PPDU indicated jointly is only 80MHz, so that one 80MHz channel of the third and fourth 80MHz channels must be punctured, specifically which 80MHz channel is punctured, depending on which 80MHz channel the resource allocated to the EHT station in the trigger frame is located on. For example, if the resource allocated to the EHT station in the trigger frame is located on the fourth 80MHz channel, the third 80MHz channel is punctured, and the EHT TB PPDU can only be transmitted on the fourth 80MHz channel. For another example, if the resource allocated to the EHT station in the trigger frame is located on the third 80MHz channel, the fourth 80MHz channel is punctured, and only the third 80MHz channel can transmit the EHT TB PPDU.

And the AP receives the uplink multi-user PPDU, wherein the uplink multi-user PPDU comprises uplink sub PPDUs sent by one or more stations. The AP then replies with an acknowledgement frame. The acknowledgement frame sent to one or more stations may be sent in a downlink OFDMA format or in a non-HT duplicate transmission format. Referring to fig. 11, fig. 11 is a timing diagram illustrating that the AP triggers the station to perform uplink data transmission in example 2.5. In fig. 11, the third 80MHz channel is punctured, and the uplink multi-user PPDU includes an HE TB PPDU with a bandwidth of 160MHz and an EHT TB PPDU with a bandwidth of 80 MHz.

The method 3 comprises the following steps: the first indication information is directly used for indicating the total transmission bandwidth of the uplink PPDU. The first indication information is carried in a total bandwidth field of an uplink PPDU, and the field occupies 3 bits.

Embodiment 3.1:

when the value of the total bandwidth field of the uplink PPDU is a value 1, indicating that the total transmission bandwidth of the uplink PPDU is 20 MHz;

when the value of the total bandwidth field of the uplink PPDU is the 2 nd value, indicating that the total transmission bandwidth of the uplink PPDU is 40 MHz;

when the value of the total bandwidth field of the uplink PPDU is a value 3, indicating that the total transmission bandwidth of the uplink PPDU is 80 MHz;

when the value of the total bandwidth field of the uplink PPDU is a 4 th numerical value, indicating that the total transmission bandwidth of the uplink PPDU is 160 MHz;

when the value of the total bandwidth field of the uplink PPDU is the 5 th numerical value, indicating that the total transmission bandwidth of the uplink PPDU is 320 MHz; other values are not used.

In embodiment 3.1, the uplink bandwidth extension field occupies 3 bits, and may represent 8 values from 0 to 7. The 1 st value to the 5 th value may be any one of {0,1,2,3,4,5,6,7} respectively, and the 1 st value, the 2 nd value, the 3 rd value, the 4 th value, and the 5 th value are different from each other. For example, a1 st value is 0, a2 nd value is 1, a3 rd value is 2, a 4 th value is 3, a 5 th value is 4, and the other values (i.e., 5,6,7) are retained.

Embodiment 3.2:

when the value of the uplink PPDU total bandwidth field is a3 rd value, indicating that the transmission total bandwidth of the uplink PPDU is 80 MHz;

when the value of the total bandwidth field of the uplink PPDU is the 5 th numerical value, indicating that the total transmission bandwidth of the uplink PPDU is 320 MHz-1;

when the value of the total bandwidth field of the uplink PPDU is the 6 th numerical value, indicating that the total transmission bandwidth of the uplink PPDU is 320 MHz-2; other values are not used.

In this embodiment 3.2, the total bandwidth of the uplink PPDU occupies 3 bits, which may represent 8 values from 0 to 7. The 1 st value to the 6 th value may be any one of {0,1,2,3,4,5,6,7} respectively, and the 1 st value, the 2 nd value, the 3 rd value, the 4 th value, the 5 th value, and the 6 th value are different from each other. For example, a1 st value of 0, a2 nd value of 1, a3 rd value of 2, a 4 th value of 3, a 5 th value of 4, a 6 th value of 5, and the other values (i.e., 6,7) are retained.

It can be seen that the values and meanings of the total bandwidth field of the uplink PPDU in the above embodiment 3.1 and the above embodiment 3.2 can be summarized as shown in the following table 9.

TABLE 9

Uplink PPDU Total Bandwidth field	Total transmission bandwidth of uplink PPDU
		Number
1	20MHz (embodiment 3.1 or 3.2)
		Number 2	40MHz (embodiment mode 3.1 or 3.2)
Number 3	80MHz (embodiment mode 3.1 or 3.2)
		Number 4	160MHz (embodiment 3.1 or 3.2)
Number 5	320MHz (embodiment 3.1), 320MHz-1 (embodiment 3.2)
		Number 6	Retention (embodiment 3.1), 320MHz-2 (embodiment 3.2)
Other numerical values	Retention (embodiment 3.1 or 3.2)

The total transmission bandwidth field and the uplink bandwidth field of the uplink PPDU are 2 independent fields, for example, when the total transmission bandwidth field of the uplink PPDU is set to a1 st value (that is, the transmission bandwidth of the corresponding uplink PPDU is 20MHz), the uplink bandwidth field may be set to an arbitrary value at this time. In order to facilitate the receiver to be easy to implement, or to provide more reserved combinations (unused values), it is proposed in either embodiment 4.1 or 4.2:

1. when the total transmission bandwidth field of the uplink PPDU is set to the 1 st value, the bandwidth of the uplink EHT TB PPDU is 20MHz, and the uplink bandwidth field needs to be set to one of 4 values of "0 to 3", for example, 0. Then, the total transmission bandwidth field of the uplink PPDU is set to the 1 st value, and the uplink bandwidth field needs to be set to any one (for example, 1 or 2 or 3) of other 3 values of 4 values of "0 to 3", and the corresponding 3 value combinations are reserved combinations (unused).

2. When the total bandwidth field of the uplink PPDU is set to the 2 nd value, the bandwidth of the uplink EHT TB PPDU is 40MHz, and the uplink bandwidth field needs to be set to one of 4 values, such as 1, of "0 to 3". Then, the total transmission bandwidth field of the uplink PPDU is set to the 2 nd value, and the uplink bandwidth field needs to be set to any one (for example, 0 or 2 or 3) of other 3 values of 4 values of "0 to 3", and the corresponding 3 value combinations are reserved combinations (unused).

3. When the total transmission bandwidth field of the uplink PPDU is set to the 3 rd numerical value, the bandwidth of the uplink EHT TB PPDU is 80MHz, and the uplink bandwidth field needs to be set to 1 value, such as 2 or 3, of 4 values of "0 to 3". Then, the total transmission bandwidth field of the uplink PPDU is set to the 3 rd value, and the uplink bandwidth field needs to be set to any one of other values (for example, any one of 0,1,2, and further, any one of 0,1, 3) in 4 values, and the corresponding value combination is a reserved combination (unused).

Or

When the total transmission bandwidth field of the uplink PPDU is set to the 3 rd numerical value, the bandwidth of the uplink EHT TB PPDU is 80MHz, and the uplink bandwidth field needs to be set to 2 values, such as 2 and 3, of 4 values of "0 to 3". Then, the total transmission bandwidth field of the uplink PPDU is set to the 3 rd value, and the uplink bandwidth field needs to be set to other 2 values (e.g., 0,1) of the 4 values of "0 to 3", and the corresponding value combination is a reserved combination (unused).

4. When the total transmission bandwidth field of the uplink PPDU is set to the 4 th numerical value, the bandwidth of the uplink EHT TB PPDU is 160MHz, and the uplink bandwidth field needs to be set to 1 value, such as 2 or 3, of 4 values of "0 to 3". Then, the total transmission bandwidth field of the uplink PPDU is set to the 4 th value, and the uplink bandwidth field needs to be set to any one of other values (for example, any one of 0,1,2, and further, any one of 0,1, 3) in 4 values, and the corresponding value combination is a reserved combination (unused).

Or

When the total transmission bandwidth field of the uplink PPDU is set to the 4 th value, the bandwidth of the uplink EHT TB PPDU is 160MHz, and the uplink bandwidth field needs to be set to 2 values, such as 2 and 3, of 4 values of "0 to 3". Then, the total transmission bandwidth field of the uplink PPDU is set to the 4 th value, and the uplink bandwidth field needs to be set to 2 value combinations corresponding to other 2 values (for example, 0,1) of the 4 values of "0 to 3" to be reserved combinations (unused).

In example 4.1

5. When the total transmission bandwidth field of the uplink PPDU is set to the 5 th value, the bandwidth of the uplink EHT TB PPDU is 320MHz, and the uplink bandwidth field needs to be set to 1 value, such as 2 or 3, of 4 values of "0 to 3". Then, the total transmission bandwidth field of the uplink PPDU is set to the 5 th value, and the uplink bandwidth field needs to be set to any one of other values (e.g., any one of 0,1,2, and further, any one of 0,1, 3) in 4 values, and the corresponding value combination is a reserved combination (unused).

Or

When the total transmission bandwidth field of the uplink PPDU is set to the 5 th value, the bandwidth of the uplink EHT TB PPDU is 320MHz, and the uplink bandwidth field needs to be set to 2 values, such as 2 and 3, of 4 values of "0 to 3". Then, the total transmission bandwidth field of the uplink PPDU is set to the 5 th value, and the uplink bandwidth field needs to be set to other 2 values (e.g., 0,1) of the 4 values of "0 to 3", and the corresponding value combination is a reserved combination (unused).

In example 4.2

5. When the total transmission bandwidth field of the uplink PPDU is set to the 5 th value, the bandwidth of the uplink EHT TB PPDU is 320MHz-1, and the uplink bandwidth field needs to be set to 1 value, such as 2 or 3, among 4 values of "0 to 3". Then, the total transmission bandwidth field of the uplink PPDU is set to the 5 th value, and the uplink bandwidth field needs to be set to any one of other values (for example, any one of 0,1,2, and further, any one of 0,1, 3) among 4 values, "0 to 3", and the corresponding value combination is a reserved combination (unused).

Or

When the total transmission bandwidth field of the uplink PPDU is set to the 5 th numerical value, the bandwidth of the uplink EHT TB PPDU is 320MHz-1, and the uplink bandwidth field needs to be set to 2 values, such as 2 and 3, of 4 values of "0 to 3". Then, the transmission total bandwidth field of the uplink PPDU is set to the 5 th value, and the uplink bandwidth field needs to be set to the value combination corresponding to the other 2 values (for example, 01) of the 4 values of "0 to 3" to be the reserved combination (unused).

6. When the total transmission bandwidth field of the uplink PPDU is set to the 6 th numerical value, the bandwidth of the uplink EHT TB PPDU is 320MHz-2, and the uplink bandwidth field needs to be set to 1 value, such as 2 or 3, of 4 values of "0 to 3". Then, the total transmission bandwidth field of the uplink PPDU is set to the 5 th value, and the uplink bandwidth field needs to be set to any one of other values (e.g., any one of 0,1,2, and further, any one of 0,1, 3) among 4 values, and the corresponding value combination is a reserved combination (unused).

Or

When the total transmission bandwidth field of the uplink PPDU is set to the 6 th numerical value, the bandwidth of the uplink EHT TB PPDU is 320MHz-2, and the uplink bandwidth field needs to be set to 2 values, such as 2 and 3, of 4 values of "0 to 3". Then, the transmission total bandwidth field of the uplink PPDU is set to the 5 th value, and the uplink bandwidth field needs to be set to the value combination corresponding to the other 2 values (for example, 01) of the 4 values of "0 to 3" to be the reserved combination (unused).

In order to facilitate the receiver to be easy to implement, or to provide more reserved combinations or unused values, another embodiment is proposed:

in example 4.1 or 4.2:

1. when the uplink bandwidth field needs to be set to 0 and the total transmission bandwidth field of the uplink PPDU is set to the 1 st numerical value, the bandwidth of the uplink EHT TB PPDU is 20MHz at this time. Then the uplink bandwidth field needs to be set to 0, and the total transmission bandwidth field of the uplink PPDU is set to 3 value combinations corresponding to other 3 values (for example, 2 nd to 4 th values) as a reserved combination (unused).

2. When the uplink bandwidth field needs to be set to 1 and the total transmission bandwidth field of the uplink PPDU is set to the 2 nd value, the bandwidth of the uplink EHT TB PPDU is 40MHz at this time. Then the uplink bandwidth field needs to be set to 1, and the total transmission bandwidth field of the uplink PPDU is set to 3 values corresponding to other 3 values (for example, the 1 st, 3 rd, 4 th values) to be combined into a reserved combination (unused).

In example 4.1:

3. when the uplink bandwidth field needs to be set to 2, the total transmission bandwidth field of the uplink PPDU is set to a3 rd numerical value, and at this time, the bandwidth of the uplink EHT TB PPDU is 80 MHz.

When the uplink bandwidth field needs to be set to 2, the total transmission bandwidth field of the uplink PPDU is set to the 4 th numerical value, and at this time, the bandwidth of the uplink EHT TB PPDU is 160 MHz.

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

Then the uplink bandwidth field needs to be set to 2, and the total transmission bandwidth field of the uplink PPDU is set to other 2 values (that is, the 1 st and 2 nd values), and the corresponding 2 values are combined to be a reserved combination (unused).

4. When the uplink bandwidth field needs to be set to 3, the total transmission bandwidth field of the uplink PPDU is set to the 3 rd numerical value, and at this time, the bandwidth of the uplink EHT TB PPDU is 80 MHz.

When the uplink bandwidth field needs to be set to 3, the total transmission bandwidth field of the uplink PPDU is set to the 4 th numerical value, and at this time, the bandwidth of the uplink EHT TB PPDU is 160 MHz.

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

Then the uplink bandwidth field needs to be set to 3, and the total transmission bandwidth field of the uplink PPDU is set to other 2 values (that is, the 1 st and 2 nd values), and the corresponding 2 values are combined to be a reserved combination (unused).

In example 4.2:

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

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

Then the uplink bandwidth field needs to be set to 2 and the total transmission bandwidth field of the uplink PPDU is set to the other 2 values (i.e. 1 st and 2 nd values), and the corresponding 2 combinations are reserved combinations (unused).

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

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

Then the uplink bandwidth field needs to be set to 3 and the total transmission bandwidth field of the uplink PPDU is set to other 2 values (that is, the 1 st and 2 nd values), and the corresponding 2 combinations are reserved combinations (unused).

In various embodiments of the above method 3, 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, the bandwidth of the uplink EHT TB PPDU is determined based on one or more of the uplink bandwidth field, the total bandwidth field of the uplink PPDU, and the EHT/HE indication field, for example, the following situations are included: the method comprises the steps of determining based on an uplink bandwidth field and an uplink PPDU total bandwidth field, or determining based on the uplink PPDU total bandwidth field, or determining based on an EHT/HE indication field, or determining 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 is the embodiment a-3 of the method a, the bandwidth of the uplink EHT TB PPDU may be determined based on only the EHT/HE indication field.

Optionally, for various embodiments of the method 3, when the second indication information is implemented by the 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 total bandwidth field of the uplink PPDU. This is because, in the method c, the EHT/HE indication field is in the user information field of the trigger frame, and the specific bandwidth of the EHT TB PPDU cannot be determined according to the field. However, the user information field of the trigger frame has an RU allocation field, and when the EHT station transmits an uplink EHT TB PPDU, the EHT station transmits the uplink EHT TB PPDU on the corresponding resource according to the indication of the RU allocation field.

The method 4 comprises the following steps: the first indication information is directly used to indicate a bandwidth of the EHT TB PPDU. The first indication information is carried in an uplink EHT TB PPDU bandwidth field, and the field occupies 3 bits.

Embodiment 4.1:

when the value of the bandwidth field of the uplink EHT TB PPDU is a value 1, indicating that the bandwidth of the EHT TB PPDU is 20 MHz;

when the value of the bandwidth field of the uplink EHT TB PPDU is the 2 nd numerical value, indicating that the bandwidth of the EHT TB PPDU is 40 MHz;

when the value of the bandwidth field of the uplink EHT TB PPDU is a3 rd numerical value, indicating that the bandwidth of the EHT TB PPDU is 80 MHz;

when the value of the bandwidth field of the uplink EHT TB PPDU is a 4 th numerical value, indicating that the bandwidth of the EHT TB PPDU is 160 MHz;

when the value of the bandwidth field of the uplink EHT TB PPDU is a 5 th numerical value, indicating that the bandwidth of the EHT TB PPDU is 320 MHz; other values are not used.

In embodiment 4.1, the uplink bandwidth extension field occupies 3 bits, and may represent 8 values from 0 to 7. The 1 st value to the 5 th value may be any one of {0,1,2,3,4,5,6,7} respectively, and the 1 st value, the 2 nd value, the 3 rd value, the 4 th value, and the 5 th value are different from each other. For example, a1 st value of 0, a2 nd value of 1, a3 rd value of 2, a 4 th value of 3, a 5 th value of 4, and other values (i.e., 5,6,7) are retained.

Embodiment 4.2:

when the value of the bandwidth field of the uplink EHT TB PPDU is a 5 th numerical value, indicating that the bandwidth of the EHT TB PPDU is 320 MHz-1;

when the value of the bandwidth field of the uplink EHT TB PPDU is a 6 th numerical value, indicating that the bandwidth of the EHT TB PPDU is 320 MHz-2; other values are not used.

In embodiment 4.2, the uplink bandwidth extension field occupies 3 bits, and may represent 8 values from 0 to 7. The 1 st value to the 6 th value may be any one of {0,1,2,3,4,5,6,7} respectively, and the 1 st value, the 2 nd value, the 3 rd value, the 4 th value, the 5 th value, and the 6 th value are different from each other. For example, a1 st value of 0, a2 nd value of 1, a3 rd value of 2, a 4 th value of 3, a 5 th value of 4, a 6 th value of 5, and the other values (i.e., 6,7) are retained.

It can be seen that the values and meanings of the bandwidth field of the uplink EHT TB PPDU in the above embodiment 4.1 and the above embodiment 4.2 can be summarized as shown in the following table 10.

Watch 10

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

The uplink EHT TB PPDU bandwidth field and the uplink bandwidth field are 2 independent fields, for example, when the uplink EHT TB PPDU bandwidth field is set to a1 st value (that is, a bandwidth of a corresponding EHT TB PPDU is 20MHz), the uplink bandwidth field may be set to an arbitrary value at this time. In order to facilitate the receiver to implement easily, or to provide more reserved combinations (unused values), it is proposed in either embodiment 4.1 or 4.2:

1. when the bandwidth field of the uplink EHT TB PPDU is set to the 1 st value, the bandwidth of the uplink EHT TB PPDU is 20MHz, and the bandwidth field of the uplink EHT TB PPDU needs to be set to one of 4 values of "0 to 3", for example, 0. Then the uplink EHT TB PPDU bandwidth field is set to the 1 st value and the uplink bandwidth field needs to be set to any one of the other 3 values (such as 1 or 2 or 3) of the 4 values of "0 to 3", and the corresponding 3 value combinations are reserved combinations (unused).

2. When the bandwidth field of the uplink EHT TB PPDU is set to the 2 nd value, the bandwidth of the uplink EHT TB PPDU is 40MHz, and the bandwidth field of the uplink EHT TB PPDU needs to be set to one of 4 values of "0 to 3", for example, 1. Then the uplink EHT TB PPDU bandwidth field is set to the 2 nd value and the uplink bandwidth field needs to be set to any one of the other 3 values (for example, 0 or 2 or 3) of the 4 values of "0 to 3", and the corresponding 3 value combinations are reserved combinations (unused).

3. When the bandwidth field of the uplink EHT TB PPDU is set to the 3 rd numerical value, at this time, the bandwidth of the uplink EHT TB PPDU is 80MHz, and the bandwidth field of the uplink EHT TB PPDU needs to be set to 1 value, such as 2 or 3, of 4 values of "0 to 3". Then, the uplink EHT TB PPDU bandwidth field is set to the 3 rd value and the uplink bandwidth field needs to be set to any one of other values (for example, any one of 0,1,2, and further, any one of 0,1, 3) among 4 values, and the corresponding value combination is a reserved combination (unused).

Or

When the bandwidth field of the uplink EHT TB PPDU is set to the 3 rd numerical value, at this time, the bandwidth of the uplink EHT TB PPDU is 80MHz, and the bandwidth field of the uplink EHT TB PPDU needs to be set to 2 values, such as 2 and 3, of 4 values of "0 to 3". Then the uplink EHT TB PPDU bandwidth field is set to the 3 rd value and the uplink bandwidth field needs to be set to other 2 values (e.g. 0,1) of the 4 values of "0 to 3", and the corresponding value combination is a reserved combination (unused).

4. When the bandwidth field of the uplink EHT TB PPDU is set to the 4 th numerical value, at this time, the bandwidth of the uplink EHT TB PPDU is 160MHz, and the bandwidth field of the uplink EHT TB PPDU needs to be set to 1 value, such as 2 or 3, of 4 values of "0 to 3". Then the uplink EHT TB PPDU bandwidth field is set to the 4 th value and the uplink bandwidth field needs to be set to any one of the other 3 values (e.g., any one of 0,1,2, and further, any one of 0,1, 3) of the 4 values, and the corresponding value combination is a reserved combination (unused).

Or

When the bandwidth field of the uplink EHT TB PPDU is set to the 4 th numerical value, at this time, the bandwidth of the uplink EHT TB PPDU is 160MHz, and the bandwidth field of the uplink EHT TB PPDU needs to be set to 2 values, such as 2 and 3, of 4 values of "0 to 3". Then the uplink EHT TB PPDU bandwidth field is set to the 4 th value and the uplink bandwidth field needs to be set to other 2 values (e.g. 0,1) of the 4 values of "0 to 3", and the corresponding combination is a reserved combination (unused).

In example 4.1:

5. when the bandwidth field of the uplink EHT TB PPDU is set to the 5 th numerical value, at this time, the bandwidth of the uplink EHT TB PPDU is 320MHz, and the bandwidth field of the uplink EHT TB PPDU needs to be set to 1 value, such as 2 or 3, of 4 values of "0 to 3". Then, the uplink EHT TB PPDU bandwidth field is set to the 5 th value and the uplink bandwidth field needs to be set to any one of other values (for example, any one of 0,1,2, and further, any one of 0,1, 3) among 4 values, and the corresponding value combination is a reserved combination (unused).

Or

When the bandwidth field of the uplink EHT TB PPDU is set to the 5 th numerical value, the bandwidth of the uplink EHT TB PPDU is 320MHz, and the bandwidth field of the uplink EHT TB PPDU needs to be set to 2 values, such as 2 and 3, of 4 values of "0 to 3". Then the uplink EHT TB PPDU bandwidth field is set to the 5 th value and the uplink bandwidth field needs to be set to other values (e.g. 0,1) among 4 values of "0 to 3", and the corresponding value combination is a reserved combination (unused).

In example 4.2:

5. when the bandwidth field of the uplink EHT TB PPDU is set to the 5 th numerical value, the bandwidth of the uplink EHT TB PPDU is 320MHz-1, and the bandwidth field of the uplink EHT TB PPDU needs to be set to 1 value, such as 2 or 3, of 4 values of "0 to 3". Then the uplink EHT TB PPDU bandwidth field is set to the 5 th value and the uplink bandwidth field needs to be set to any one of other values of 4 values of "0 to 3" (the corresponding value combination is a reserved combination (not used).

Or

When the bandwidth field of the uplink EHT TB PPDU is set to the 5 th numerical value, the bandwidth of the uplink EHT TB PPDU is 320-1MHz, and the bandwidth field of the uplink EHT TB PPDU needs to be set to 2 values, such as 2 and 3, of 4 values of "0 to 3". Then the uplink EHT TB PPDU bandwidth field is set to the 5 th value and the uplink bandwidth field needs to be set to other values (e.g. 0,1) among 4 values of "0 to 3", and the corresponding value combination is a reserved combination (unused).

6. When the bandwidth field of the uplink EHT TB PPDU is set to the 6 th numerical value, the bandwidth of the uplink EHT TB PPDU is 320-2MHz, and the bandwidth field of the uplink EHT TB PPDU needs to be set to 1 value, such as 2 or 3, of 4 values of "0 to 3". Then the bandwidth field of the uplink EHT TB PPDU is set to the 5 th value and the bandwidth field of the uplink needs to be set to any one of other values of 4 values from "0 to 3", and the corresponding 3 combinations are reserved combinations (unused).

Or

When the bandwidth field of the uplink EHT TB PPDU is set to the 6 th numerical value, at this time, the bandwidth of the uplink EHT TB PPDU is 320-2MHz, and the bandwidth field of the uplink EHT TB PPDU needs to be set to 2 values, such as 2 and 3, of 4 values of "0 to 3". Then the uplink EHT TB PPDU bandwidth field is set to the 5 th value and the uplink bandwidth field needs to be set to other values (e.g. 0,1) among 4 values of "0 to 3", and the corresponding value combination is a reserved combination (unused).

in example 4.1 or 4.2:

1. when the uplink bandwidth field needs to be set to 0 and the uplink EHT TB PPDU bandwidth field is set to the 1 st numerical value, the bandwidth of the uplink EHT TB PPDU is 20MHz at this time. Then the uplink bandwidth field needs to be set to 0 and the uplink EHT TB PPDU bandwidth field needs to be set to any one of the other 3 values (for example, one of 2 nd to 4 th values), and the corresponding 3 combinations are reserved combinations (not used).

2. When the uplink bandwidth field needs to be set to 1 and the uplink EHT TB PPDU bandwidth field is set to the 2 nd value, the bandwidth of the uplink EHT TB PPDU is 40MHz at this time. Then the uplink bandwidth field needs to be set to 1 and the uplink EHT TB PPDU bandwidth field needs to be set to any one of the other 3 values (for example, one of the 1 st, 3 rd, and 4 th values), and the corresponding 3 combinations are reserved combinations (unused).

In example 4.1:

3. when the uplink bandwidth field needs to be set to 2, the uplink EHT TB PPDU bandwidth field is set to the 3 rd numerical value, and at this time, the bandwidth of the uplink EHT TB PPDU is 80 MHz.

When the uplink bandwidth field needs to be set to 2, the uplink EHT TB PPDU bandwidth field is set to the 4 th numerical value, and at this time, the bandwidth of the uplink EHT TB PPDU is 160 MHz.

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

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

4. And when the uplink bandwidth field needs to be set to be 3, the uplink EHT TB PPDU bandwidth field is set to be the 3 rd numerical value, and at the moment, the bandwidth of the uplink EHT TB PPDU is 80 MHz.

And when the uplink bandwidth field needs to be set to be 3, the uplink EHT TB PPDU bandwidth field is set to be a 4 th numerical value, and at the moment, the bandwidth of the uplink EHT TB PPDU is 160 MHz.

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

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 2 values (that is, one of the 1 st and 2 nd values), and the corresponding 2 combinations are reserved combinations (unused).

In example 4.2:

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

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

Then the uplink bandwidth field needs to be set to 2 and the uplink EHT TB PPDU bandwidth field needs to be set to one of the other 2 values (i.e. one of the 1 st and 2 nd values), and the corresponding 2 combinations are reserved combinations (not used).

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

When the uplink bandwidth field needs to be set to 3, the uplink EHT TB PPDU bandwidth field is set to the 6 th numerical value, at this time, the bandwidth of the uplink EHT TB PPDU is 320MH-2, or the combination is reserved (not used).

Then the uplink bandwidth field needs to be set to 3 and the uplink EHT TB PPDU bandwidth field needs to be set to one of the other 2 values (i.e. one of the 1 st and 2 nd values), and the corresponding 2 combinations are reserved combinations (not used).

The foregoing details the methods provided herein, and in order to better implement the above aspects of the embodiments of the present disclosure, the embodiments of the present disclosure also provide corresponding apparatuses or devices.

In the embodiment of the present application, functional modules of the AP and the STA may be divided according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation. The communication apparatus of the embodiment of the present application will be described in detail below with reference to fig. 12 and 13. Wherein the communication device is an access point or a station, and further, the communication device may be a device in an AP; alternatively, the communication device is a device in the STA.

In the case of using an integrated unit, referring to fig. 12, fig. 12 is a schematic structural diagram of a communication device 1 provided in an embodiment of the present application. The communication device 1 may be an AP or a chip in an AP, such as a Wi-Fi chip or the like. As shown in fig. 12, the communication apparatus 1 includes: a processing unit 11 and a transceiver unit 12.

In a first design, the processing unit 11 is configured to generate a trigger frame, where the trigger frame includes first indication information, and 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 comprises second indication information, wherein the second indication information is used for indicating the distribution of a high-efficiency physical layer protocol data unit (HE TB PPDU) and/or an extremely high throughput rate (EHT) TB PPDU based on triggering in the total transmission bandwidth of the uplink PPDU; the transceiver 12 is configured to transmit the trigger frame.

In the second design, the processing unit 11 is configured to generate a trigger frame, where the trigger frame includes first indication information, and 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 further includes second indication information for indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU; the transceiver 12 is configured to transmit the trigger frame.

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

wherein a bandwidth field of a common signaling field in a 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.

In a third design, the processing unit 11 is configured to generate a trigger frame, where the trigger frame includes first indication information, and an uplink bandwidth field in a common information field of the first indication information and the trigger frame jointly indicates a bandwidth of an EHT TB PPDU, which is an ultra high throughput physical layer data protocol unit, and the uplink bandwidth field indicates a bandwidth of the HE TB PPDU; the trigger frame further includes second indication information, where the second indication information is used to indicate a frequency domain slice of the EHT TB PPDU and/or a frequency domain slice of the HE TB PPDU, a bandwidth of the EHT TB PPDU is a bandwidth jointly indicated by the first indication information and the uplink bandwidth field, and a bandwidth of the HE TB PPDU is a bandwidth of the uplink bandwidth field; the transceiver 12 is configured to transmit the trigger frame.

In a fourth design, the processing unit 11 is configured to generate a trigger frame, where the trigger frame includes first indication information, and the first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicate a bandwidth of an EHT TB PPDU, and the uplink bandwidth field indicates a bandwidth of an HE TB PPDU; the trigger frame further includes second indication information for indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU; the transceiver 12 is configured to transmit the trigger frame.

Optionally, in the third and fourth designs, the transceiver unit 12 is further configured to receive an HE TB PPDU or an EHT TB PPDU; and setting a bandwidth field of a general signaling field in a preamble of the EHT TB PPDU to a value jointly indicated by the first indication information and the uplink bandwidth field.

It should be understood that the communication device 1 can correspondingly execute the foregoing method embodiments, and the foregoing operations or functions of the units in the communication device 1 are respectively for implementing the corresponding operations of the AP in the foregoing method embodiments, and for brevity, are not described again here.

Referring to fig. 13, fig. 13 is a schematic structural diagram of a communication device 2 according to an embodiment of the present application. The communication device 2 may be a STA or a chip in the STA, such as a Wi-Fi chip or the like. As shown in fig. 13, the communication device 2 includes: a transceiver unit 21 and a processing unit 22.

In the first design, the transceiver unit 21 is configured to receive a trigger frame, where the trigger frame includes first indication information, and 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 PPDU; the trigger frame further comprises second indication information, wherein the second indication information is used for indicating distribution of a trigger-based high-efficiency physical layer protocol data unit (HE TB PPDU) and/or an extremely high throughput rate physical layer protocol data unit (EHT TB PPDU) in the total transmission bandwidth of the uplink PPDU; the processing unit 22 is configured to parse the trigger frame.

In the second design, the transceiver unit 21 is configured to receive a trigger frame, where the trigger frame includes first indication information, and 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 PPDU; the trigger frame further includes second indication information for indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU; the processing unit 22 is configured to parse the trigger frame.

In the first and second designs, the processing unit 22 is further configured to generate an HE TB PPDU or an EHT TB PPDU, where a bandwidth field of a general signaling field in a 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; the transceiver unit 21 is further configured to transmit the generated HE TB PPDU or the generated EHT TB PPDU according to the indication of the second indication information.

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

In a fourth design, the transceiver unit 21 is configured to receive a trigger frame, where the trigger frame includes first indication information, and the first indication information and an uplink bandwidth field in a common information field of the trigger frame jointly indicate a bandwidth of an EHT TB PPDU, and the uplink bandwidth field indicates a bandwidth of an HE TB PPDU; the trigger frame further includes second indication information for indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU; the processing unit 22 is configured to parse the trigger frame.

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

It should be understood that the communication device 2 may correspondingly perform the foregoing method embodiments, and the operations or functions of the units in the communication device 2 are respectively for implementing the corresponding operations of the STA in the foregoing method embodiments, and for brevity, no further description is provided here.

The AP and the STA according to the embodiments of the present application are introduced above, and the possible product forms of the AP and the STA are introduced below. It should be understood that any product having the AP function described in fig. 12, but any product having the STA function described in fig. 13, falls within the scope of the embodiments of the present application. It should also be understood that the following description is only exemplary and does not limit the product form of the AP and the STA of the embodiments of the present application.

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

An AP comprising a processor and a transceiver in inter-connection communication with the processor.

In one design, a processor is configured to generate a trigger frame, where the trigger frame includes first indication information, and an uplink bandwidth field in a common information field of the first indication information and the trigger frame jointly indicates a total transmission bandwidth of an uplink physical layer protocol data unit PPDU; the trigger frame further comprises second indication information, wherein the second indication information is used for indicating distribution of a trigger-based high-efficiency physical layer protocol data unit (HE TB PPDU) and/or an extremely high throughput rate physical layer protocol data unit (EHT TB PPDU) in the total transmission bandwidth of the uplink PPDU; a transceiver for transmitting the trigger frame.

In one design, a processor is configured to generate a trigger frame, where the trigger frame includes first indication information, and an uplink bandwidth field in a common information field of the first indication information and the trigger frame jointly indicates a total transmission bandwidth of an uplink physical layer protocol data unit PPDU; the trigger frame further includes second indication information for indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU; a transceiver for transmitting the trigger frame.

In one design, a processor is configured to generate a trigger frame, where the trigger frame includes first indication information, and an uplink bandwidth field in a common information field of the trigger frame and the first indication information jointly indicate a bandwidth of an EHT TB PPDU (extra high throughput physical layer data protocol unit), where the uplink bandwidth field indicates a bandwidth of the HE TB PPDU; the trigger frame further includes second indication information, where the second indication information is used to indicate a frequency domain slice of the EHT TB PPDU and/or a frequency domain slice of the HE TB PPDU, a bandwidth of the EHT TB PPDU is a bandwidth jointly indicated by the first indication information and the uplink bandwidth field, and a bandwidth of the HE TB PPDU is a bandwidth of the uplink bandwidth field; a transceiver for transmitting the trigger frame.

In one design, a processor is configured to generate a trigger frame, where the trigger frame includes first indication information, and an uplink bandwidth field in a common information field of the first indication information and the trigger frame jointly indicates a bandwidth of an EHT TB PPDU; the trigger frame further includes second indication information for indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU; a transceiver for transmitting the trigger frame.

A STA comprising a processor and a transceiver in inter-connection communication with the processor.

In one design, a transceiver is configured to receive a trigger frame, where the trigger frame includes first indication information, and an uplink bandwidth field in a common information field of the trigger frame and the first indication information jointly indicate a total transmission bandwidth of an uplink PPDU; the trigger frame further comprises second indication information, wherein the second indication information is used for indicating distribution of a trigger-based high-efficiency physical layer protocol data unit (HE TB PPDU) and/or an extremely high throughput rate physical layer protocol data unit (EHT TB PPDU) in the total transmission bandwidth of the uplink PPDU; a processor for parsing the trigger frame.

In one design, a transceiver is configured to receive a trigger frame, where the trigger frame includes first indication information, and an uplink bandwidth field in a common information field of the trigger frame and the first indication information jointly indicate a total transmission bandwidth of an uplink PPDU; the trigger frame further includes second indication information for indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU; a processor for parsing the trigger frame.

In one design, a transceiver is configured to receive a trigger frame, where the trigger frame includes first indication information, and an uplink bandwidth field in a common information field of the first indication information and the trigger frame jointly indicates a bandwidth of an EHT TB PPDU; the trigger frame further includes second indication information, where the second indication information is used to indicate a frequency domain slice of an EHT TB PPDU and/or a frequency domain slice of an HE TB PPDU, a bandwidth of the EHT TB PPDU is a bandwidth jointly indicated by the first indication information and the uplink bandwidth field, and a bandwidth of the HE TB PPDU is a bandwidth of the uplink bandwidth field; a processor for parsing the trigger frame.

In one design, a processor is configured to receive a trigger frame, where the trigger frame includes first indication information, and an uplink bandwidth field in a common information field of the first indication information and the trigger frame jointly indicates a bandwidth of an EHT TB PPDU; the trigger frame further includes second indication information for indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU; a transceiver for parsing the trigger frame.

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

A general-purpose processor implementing an AP includes processing circuitry and an input-output interface in internal connection communication with the processing circuitry.

In one design, a processing circuit is configured to generate a trigger frame, where the trigger frame includes first indication information, and an uplink bandwidth field in a common information field of the trigger frame and the first indication information jointly indicate a total transmission bandwidth of an uplink physical layer protocol data unit PPDU; the trigger frame further comprises second indication information, wherein the second indication information is used for indicating distribution of a trigger-based high-efficiency physical layer protocol data unit (HE TB PPDU) and/or an extremely high throughput rate physical layer protocol data unit (EHT TB PPDU) in the total transmission bandwidth of the uplink PPDU; and the input and output interface is used for sending the trigger frame.

In one design, a processing circuit is configured to generate a trigger frame, where the trigger frame includes first indication information, and an uplink bandwidth field in a common information field of the first indication information and the trigger frame jointly indicates a total transmission bandwidth of an uplink physical layer protocol data unit PPDU; the trigger frame further includes second indication information for indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU; and the input and output interface is used for sending the trigger frame.

In one design, a processing circuit is configured to generate a trigger frame, where the trigger frame includes first indication information, and an uplink bandwidth field in a common information field of the trigger frame and the first indication information jointly indicate a bandwidth of an EHT TB PPDU (extra high throughput physical layer data protocol unit), where the uplink bandwidth field indicates a bandwidth of the HE TB PPDU; the trigger frame further includes second indication information, where the second indication information is used to indicate a frequency domain slice of the EHT TB PPDU and/or a frequency domain slice of the HE TB PPDU, a bandwidth of the EHT TB PPDU is a bandwidth jointly indicated by the first indication information and the uplink bandwidth field, and a bandwidth of the HE TB PPDU is a bandwidth of the uplink bandwidth field; and the input and output interface is used for sending the trigger frame.

In one design, a processing circuit is configured to generate a trigger frame, where the trigger frame includes first indication information, and an uplink bandwidth field in a common information field of the first indication information and the trigger frame jointly indicates a bandwidth of an EHT TB PPDU; the trigger frame further includes second indication information for indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU; and the input and output interface is used for sending the trigger frame.

The general processing circuit for realizing the STA comprises a processing circuit and an input/output interface which is connected and communicated with the processing circuit.

In one design, an input/output interface is configured to receive a trigger frame, where the trigger frame includes first indication information, and 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 PPDU; the trigger frame further comprises second indication information, wherein the second indication information is used for indicating distribution of a trigger-based high-efficiency physical layer protocol data unit (HE TB PPDU) and/or an extremely high throughput rate physical layer protocol data unit (EHT TB PPDU) in the total transmission bandwidth of the uplink PPDU; and the processing circuit is used for analyzing the trigger frame.

In one design, an input/output interface is configured to receive a trigger frame, where the trigger frame includes first indication information, and 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 PPDU; the trigger frame further includes second indication information for indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU; and the processing circuit is used for analyzing the trigger frame.

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

In one design, a processing circuit is configured to receive a trigger frame, where the trigger frame includes first indication information, and an uplink bandwidth field in a common information field of the first indication information and the trigger frame jointly indicates a bandwidth of an EHT TB PPDU; the trigger frame further includes second indication information for indicating whether the station transmits the HE TB PPDU or the EHT TB PPDU; and the input and output interface is used for analyzing the trigger frame.

It should be understood that the communication devices in the above various product forms have any functions of the AP or STA in the above method embodiments, and are not described herein again.

The embodiment of the present application further provides a computer-readable storage medium, in which a computer program code is stored, and when the computer program code is executed by the above-mentioned processor, the electronic device executes the method in any of the foregoing embodiments.

The embodiments of the present application also provide a computer program product, which when run on a computer, causes the computer to execute the method in any of the foregoing embodiments.

The embodiment of the present application further provides a communication device, which may exist in the form of a chip product, and the structure of the device includes a processor and an interface circuit, where the processor is configured to communicate with another device through a receiving circuit, so that the device performs the method in any one of the foregoing embodiments.

An embodiment of the present application further provides a wireless communication system, which includes an AP and an STA, where the AP and the STA may perform the method in any of the foregoing embodiments.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Erasable Programmable read-only Memory (EPROM), Electrically Erasable Programmable read-only Memory (EEPROM), registers, a hard disk, a removable disk, a compact disc read-only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in a core network interface device. Of course, the processor and the storage medium may reside as discrete components in a core network interface device.

Those skilled in the art will recognize that in one or more of the examples described above, the functions described herein may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer-readable storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application.

Claims

1. A method for indicating uplink bandwidth of a physical layer protocol data unit (PPDU) is characterized by comprising the following steps:

an Access Point (AP) generates a trigger frame, wherein the trigger frame comprises first indication information, and the first indication information and an uplink bandwidth field in a public information field of the trigger frame jointly indicate the total transmission bandwidth of an uplink physical layer protocol data unit (PPDU);

the trigger frame further comprises second indication information, wherein the second indication information is used for indicating the distribution of a trigger-based high-efficiency physical layer protocol data unit (HE TB PPDU) and/or a trigger-based very high throughput rate physical layer protocol data unit (EHT TB PPDU) in the total transmission bandwidth of the uplink PPDU;

the AP sends the trigger frame.

2. A method for indicating uplink bandwidth of a physical layer protocol data unit (PPDU) is characterized by comprising the following steps:

an AP generates a trigger frame, wherein the trigger frame comprises first indication information, and the first indication information and an uplink bandwidth field in a public information field of the trigger frame are connected with the total transmission bandwidth of a PPDU (physical layer protocol data unit);

the trigger frame further comprises second indication information, and the second indication information is used for indicating whether the station transmits an HE TB PPDU or an EHT TB PPDU;

the AP sends the trigger frame.

3. The method according to claim 1 or 2, characterized in that the method further comprises:

the AP receives HE TB PPDU or EHT TB PPDU;

4. A method for indicating uplink bandwidth of a physical layer protocol data unit (PPDU) is characterized by comprising the following steps:

a station STA receives a trigger frame, wherein the trigger frame comprises first indication information, and the first indication information and an uplink bandwidth field in a public information field of the trigger frame jointly indicate the total transmission bandwidth of an uplink PPDU;

the trigger frame further comprises second indication information, wherein the second indication information is used for indicating distribution of a trigger-based high-efficiency physical layer protocol data unit (HE TB PPDU) and/or an extremely high throughput rate physical layer protocol data unit (EHT TB PPDU) in the total transmission bandwidth of the uplink PPDU;

the STA parses the trigger frame.

5. A method for indicating uplink bandwidth of a physical layer protocol data unit (PPDU) is characterized by comprising the following steps:

the STA parses the trigger frame.

6. The method according to claim 4 or 5, characterized in that the method further comprises:

the STA generates an HE TB PPDU or an EHT TB PPDU, and a bandwidth field of a general signaling field in a preamble of the EHT TB PPDU is determined based on one or more items of the first indication information, the uplink bandwidth field and the second indication information;

and the STA sends the generated HE TB PPDU or EHT TB PPDU according to the indication of the second indication information.

7. The method according to any of claims 1-6, wherein the first indication information is located in a reserved bit of a common information field of the trigger frame or in a first user information field of the trigger frame;

the second indication information is located in a reserved bit of a public information field of the trigger frame, or in the first user information field, or in a second user information field of the trigger frame;

a value of an association identifier AID12 field in the first user information field is a preset value, where the preset value is any one of 2008 to 2044 or 2046 to 4095, and indicates that the first user information field carries part of common information of the trigger frame;

the value of the AID12 field of the second user information field is any one of 1 to 2007, and the AID12 field of the second user information field is used for indicating the association identifier of the station.

8. The method of claim 7, wherein when the second indication information is located in a reserved bit of a common information field of the trigger frame or in the first user information field, the second indication information is 1 bit, or 2 bits, or 4 bits;

when the second indication information is located in the second user information field, the second indication information is 1 bit.

9. The method according to any of claims 1-7, wherein the first indication information is 2 bits;

the first indication information and the uplink bandwidth field jointly indicate a total transmission bandwidth of an uplink PPDU, which includes at least one of the following situations:

when the value of the uplink bandwidth field is 2 and the value of the first indication information is a1 st value, the total transmission bandwidth of the uplink PPDU is 80 MHz;

when the value of the uplink bandwidth field is 2 and the value of the first indication information is a2 nd value, the total transmission bandwidth of the uplink PPDU is 160 MHz;

when the value of the uplink bandwidth field is 2 and the value of the first indication information is a3 rd value, the total transmission bandwidth of the uplink PPDU is 320MHz or 320 MHz-1;

when the value of the uplink bandwidth field is 2 and the value of the first indication information is a 4 th value, the combined reservation or the total transmission bandwidth of the uplink PPDU is 320 MHz-2;

when the value of the uplink bandwidth field is 3 and the value of the first indication information is a 5 th value, the total transmission bandwidth of the uplink PPDU is 160 MHz;

when the value of the uplink bandwidth field is 3 and the value of the first indication information is a 6 th value, the total transmission bandwidth of the uplink PPDU is 320MHz or 320 MHz-1;

when the value of the uplink bandwidth field is 3 and the value of the first indication information is a 7 th value, the total transmission bandwidth of the combined reservation or the uplink PPDU is 320 MHz-2;

wherein the 1 st numerical value to the 4 th numerical value are respectively any one of {0,1,2,3} and are different from each other; the 5 th value to the 7 th value are respectively any one of {0,1,2,3} and are different from each other.

10. The method according to any of claims 1-7, wherein the first indication information is 2 bits;

when the value of the first indication information is a value 1, the total transmission bandwidth of the uplink PPDU is the same as the bandwidth indicated by the uplink bandwidth field;

when the value of the first indication information is a2 nd numerical value, the total transmission bandwidth of the uplink PPDU is 160 MHz;

when the value of the first indication information is a3 rd numerical value, the total transmission bandwidth of the uplink PPDU is 320MHz or 320 MHz-1;

and when the value of the first indication information is a 4 th numerical value, the total transmission bandwidth of the combined reservation or the uplink PPDU is 320 MHz-2.

11. A method for indicating uplink bandwidth of a physical layer protocol data unit (PPDU) is characterized by comprising the following steps:

an Access Point (AP) generates a trigger frame, wherein the trigger frame comprises first indication information, the first indication information and an uplink bandwidth field in a public information field of the trigger frame jointly indicate the bandwidth of an EHT (high throughput) TB (physical layer data protocol) PPDU (Ethernet protocol transport protocol) of the physical layer, and the uplink bandwidth field indicates the bandwidth of the HE TB PPDU;

the trigger frame further comprises second indication information, wherein the second indication information is used for indicating frequency domain slices of an EHT TB PPDU and/or frequency domain slices of an 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 AP sends the trigger frame.

12. A method for indicating uplink bandwidth of a physical layer protocol data unit (PPDU) is characterized by comprising the following steps:

an Access Point (AP) generates a trigger frame, wherein the trigger frame comprises first indication information, the first indication information and an uplink bandwidth field in a public information field of the trigger frame jointly indicate the bandwidth of an EHT TB (Ethernet passive optical network) PPDU, and the uplink bandwidth field indicates the bandwidth of an HE TB PPDU;

the AP sends the trigger frame.

13. The method according to claim 11 or 12, characterized in that the method further comprises:

the AP receives HE TB PPDU or EHT TB PPDU;

and setting a bandwidth field of a general signaling field in a preamble of the EHT TB PPDU to be a value jointly indicated by the first indication information and the uplink bandwidth field.

14. A method for indicating uplink bandwidth of a physical layer protocol data unit (PPDU) is characterized by comprising the following steps:

a station STA receives a trigger frame, wherein the trigger frame comprises first indication information, the first indication information and an uplink bandwidth field in a public information field of the trigger frame jointly indicate the bandwidth of an EHT TB PPDU, and the uplink bandwidth field indicates the bandwidth of an HE TB PPDU;

the trigger frame further includes second indication information, where the second indication information is used to indicate a frequency domain slice of an EHT TB PPDU and/or a frequency domain slice of an HE TB PPDU, a bandwidth of the EHT TB PPDU is a bandwidth jointly indicated by the first indication information and the uplink bandwidth field, and a bandwidth of the HE TB PPDU is a bandwidth of the uplink bandwidth field;

the STA parses the trigger frame.

15. A method for indicating uplink bandwidth of a physical layer protocol data unit (PPDU) is characterized by comprising the following steps:

the STA parses the trigger frame.

16. The method according to claim 14 or 15, characterized in that the method further comprises:

the STA generates an HE TB PPDU or an EHT TB PPDU, and a bandwidth field of a general signaling field in a preamble of the EHT TB PPDU is set as a value indicated by the first indication information and the uplink bandwidth field jointly;

and the STA sends the generated HE TB PPDU or the generated EHT TB PPDU according to the indication of the second indication information.

17. The method according to any of claims 11-16, wherein the first indication information is located in a reserved bit of a common information field of the trigger frame or in a first user information field of the trigger frame;

the second indication information is located in a reserved bit of a public information field of the trigger frame, or in a first user information field of the trigger frame, or in a second user information field of the trigger frame;

18. The method of claim 17, wherein when the second indication information is located in a reserved bit of a common information field of the trigger frame or in the first user information field, the second indication information is 1 bit, or 2 bits, or 4 bits;

and when the second indication information is located in the second user information field, the second indication information is 1 bit.

19. The method according to claims 11-17, wherein the first indication information is 2 bits;

the first indication information and the uplink bandwidth field jointly indicate a bandwidth of an EHT TB PPDU, including at least one of the following situations:

when the value of the uplink bandwidth field is 2 and the value of the first indication information is a1 st value, the bandwidth of the EHT TB PPDU is 80 MHz;

when the value of the uplink bandwidth field is 2 and the value of the first indication information is a2 nd value, the bandwidth of the EHT TB PPDU is 160 MHz;

when the value of the uplink bandwidth field is 2 and the value of the first indication information is a3 rd value, the bandwidth of the EHT TB PPDU is 320MHz or 320 MHz-1;

when the value of the uplink bandwidth field is 2 and the value of the first indication information is a 4 th value, the bandwidth of the combined reserved or EHT TB PPDU is 320 MHz-2;

when the value of the uplink bandwidth field is 3 and the value of the first indication information is a1 st value, the bandwidth of the EHT TB PPDU is 80 MHz;

when the value of the uplink bandwidth field is 3 and the value of the first indication information is a2 nd value, the bandwidth of the EHT TB PPDU is 160 MHz;

when the value of the uplink bandwidth field is 3 and the value of the first indication information is a3 rd value, the bandwidth of the EHT TB PPDU is 320MHz or 320 MHz-1;

and when the value of the uplink bandwidth field is 3 and the value of the first indication information is a 4 th value, the bandwidth of the combined reservation or the EHT TB PPDU is 320 MHz-2.

20. The method according to any one of claims 11-17, wherein the first indication information is 2 bits;

the first indication information and the uplink bandwidth field jointly indicate the bandwidth of an EHT TB PPDU, including at least one of the following situations:

when the value of the first indication information is a value 1, the bandwidth of the EHT TB PPDU is the same as the bandwidth indicated by the uplink bandwidth field;

when the value of the first indication information is a2 nd numerical value, the bandwidth of the EHT TB PPDU is 80 MHz;

when the value of the first indication information is a3 rd numerical value, the bandwidth of the EHT TB PPDU is 160 MHz;

and when the value of the first indication information is a 4 th numerical value, the bandwidth of the EHT TB PPDU is 320 MHz.

21. The method according to any of claims 11-17, wherein the first indication information is 3 bits;

when the value of the first indication information is a 4 th numerical value, the bandwidth of the EHT TB PPDU is 320 MHz-1;

and when the value of the first indication information is a 5 th numerical value, the bandwidth of the EHT TB PPDU is 320 MHz-2.

22. A communication device, characterized in that it comprises means or modules for performing the method according to any of claims 1-10.

23. A communication device, characterized in that it comprises means or modules for performing the method according to any of claims 11-21.

24. A computer-readable storage medium having stored therein program instructions that, when run on a computer, cause the computer to perform the method of any one of claims 1-21.

25. A computer program product comprising program instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1-21.