WO2022213891A1 - Transmission requirement indication method and apparatus - Google Patents

Abstract

The present application provides a transmission requirement indication method and apparatus. The method comprises: a first access point (AP) generates a wireless frame, the wireless frame comprising transmission requirement indication information, and the transmission requirement indication information being used for indicating that a first AP needs to share a transmission resource; and the first AP sends the wireless frame. According to the transmission requirement indication method provided by the present application, a sharing AP may ascertain a transmission requirement of a shared AP, so as to determine a transmission resource required by the shared AP, thereby improving the transmission efficiency of multi-AP cooperation.

Description

Method and apparatus for transmitting demand indication

This application claims the priority of the Russian patent application filed on April 8, 2021 with the Russian Federal Patent Office, application number RU2021109661 and titled "A method and apparatus for transmitting a demand indication", the entire contents of which are incorporated by reference in in this application.

technical field

The present application relates to the field of communications, and more particularly, to a method and apparatus for transmitting a demand indication.

Background technique

With the development of wireless networks and the continuous popularization of wireless local area network (WLAN) technology, more and more places need to deploy access points (APs). Multiple stations (station, STA) provide services, and the AP and multiple STAs served by the AP form a basic service set (basic service set, BSS). While more and more APs provide services to more sites, there are overlapping areas between different BSSs, which brings more inter-cell interference. To reduce interference, the industry proposes a multi-AP cooperative transmission method.

Generally, an AP that initiates multi-AP cooperative transmission can be called a sharing AP (sharing AP), and other APs that share transmission resources or transmission opportunities (transmit opportunity, TXOP) are called shared APs (shared AP). In uplink single-cell multi-user transmission between one AP and multiple stations, the station can send a first buffer status report (BSR) to the AP to notify the AP of the status of its buffer, that is, there is a buffer in the buffer. How many bytes of data to send. Since the transmission parameters used by the station to send the data frame are determined by the AP, the AP can calculate the transmission duration required by the STA. Therefore, the AP can allocate a reasonable transmission duration to the STA to ensure that the data in the STA's buffer can be completely transmitted. However, in multi-AP cooperative transmission, each AP determines its own transmission parameters. Therefore, even if the shared AP informs the shared AP of its buffer status, the shared AP cannot determine the transmission resources required by the shared AP.

SUMMARY OF THE INVENTION

The present application provides a method for indicating transmission requirements, so that a sharing AP can learn the transmission requirements of the shared AP, thereby determining the transmission resources required by the shared AP, which can improve the transmission efficiency of multi-AP cooperation.

In a first aspect, a method for transmitting demand indication is provided, the method includes: a first access point AP generates a radio frame, the radio frame includes transmission demand indication information, and the transmission demand indication information is used to indicate that the first AP needs to be Share transmission resources. The first AP sends the radio frame.

In the method for transmission demand indication provided by this application, the first AP can send transmission demand indication information to the second AP, and the transmission demand indication information is used to indicate that the first AP needs to share transmission resources, so that the second AP can learn about the first AP. The transmission requirement of the AP is to allocate an appropriate amount of resources to the first AP in the subsequent multi-AP cooperative transmission, so that the transmission efficiency of the multi-AP cooperation can be improved.

It should be understood that the transmission resources that the first AP needs to share may include at least one of the following situations:

Case 1: The first AP has a requirement for transmission resources. That is, the transmission requirement indication information may be used to indicate whether the first AP needs transmission resources.

Case 2: Transmission resources required by the first AP. In other words, the transmission requirement indication information can be used to indicate specific information of the transmission requirement of the first AP, such as the size of the required transmission resource, the time limit of the required transmission resource, the required transmission channel and other information. .

With reference to the first aspect, in some implementations of the first aspect, the transmission requirement indication information includes first indication information, where the first indication information is used to indicate that the first AP has a transmission requirement.

With reference to the first aspect, in some implementations of the first aspect, the first indication information is carried in a physical layer header of the radio frame.

With reference to the first aspect, in some implementations of the first aspect, the first indication information is carried in the U-SIG field of the physical layer frame header of the radio frame or the EHT-SIG field of the physical layer frame header of the radio frame middle.

With reference to the first aspect, in some implementations of the first aspect, the transmission requirement indication information includes second indication information, where the second indication information is used to indicate the transmission duration required by the first AP.

With reference to the first aspect, in some implementations of the first aspect, the second indication information is carried in a physical layer header of the radio frame or a medium access control protocol data unit MPDU of the radio frame.

With reference to the first aspect, in some implementations of the first aspect, the second indication information is carried in the U-SIG field of the physical layer frame header of the radio frame or the EHT-SIG field of the physical layer frame header of the radio frame middle.

With reference to the first aspect, in some implementations of the first aspect, the transmission requirement indication information includes third indication information, where the third indication information is used to indicate the transmission bandwidth required by the first AP.

With reference to the first aspect, in some implementations of the first aspect, the third indication information is carried in a physical layer header of the radio frame or a medium access control protocol data unit MPDU of the radio frame.

With reference to the first aspect, in some implementations of the first aspect, the third indication information is carried in the U-SIG field of the physical layer frame header of the radio frame or the EHT-SIG field of the physical layer frame header of the radio frame middle.

With reference to the first aspect, in some implementations of the first aspect, the transmission requirement indication information includes fourth indication information, where the fourth indication information is used to indicate at least one of the following: a time limit of the transmission requirement of the first AP, the first The direction of the transmission requirement of an AP, the type of data to be transmitted in the transmission requirement of the first AP, the cooperation mode required by the first AP, the transmission power required by the first AP, the transmission channel required by the first AP, and the transmission channel required by the second AP The identifier of the AP, where the second AP is the sharing AP.

With reference to the first aspect, in some implementations of the first aspect, the fourth indication information is carried in a medium access control protocol data unit MPDU of the radio frame.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the first AP receives a request frame, where the request frame is used to request the first AP to send the radio frame.

In a second aspect, a method for transmitting a demand indication is provided, the method includes: a second access point AP receives a radio frame from a first AP, the radio frame includes transmission demand indication information, and the transmission demand indication information is used for Indicates that the first AP needs to be shared transmission resources. The second AP determines a first transmission resource according to the transmission requirement indication information, where the first transmission resource is a transmission resource that needs to be shared by the first AP.

In the method for transmission demand indication provided by this application, the first AP can send transmission demand indication information to the second AP, and the transmission demand indication information is used to indicate that the first AP needs to share transmission resources, so that the second AP can learn about the first AP. The transmission requirement of the AP is to allocate an appropriate amount of resources to the first AP in the subsequent multi-AP cooperative transmission, so that the transmission efficiency of the multi-AP cooperation can be improved.

It should be understood that the transmission resources that the first AP needs to share may include at least one of the following situations:

Case 1: The first AP has a requirement for transmission resources. That is, the transmission requirement indication information may be used to indicate whether the first AP needs transmission resources.

Case 2: Transmission resources required by the first AP. In other words, the transmission requirement indication information can be used to indicate specific information of the transmission requirement of the first AP, such as the size of the required transmission resource, the time limit of the required transmission resource, the required transmission channel and other information. .

With reference to the second aspect, in some implementations of the second aspect, the transmission requirement indication information includes first indication information, where the first indication information is used to indicate that the first AP has a transmission requirement.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second AP parses the first indication information from the physical frame header of the radio frame.

With reference to the second aspect, in some implementations of the second aspect, the second AP parses the first indication information from the physical frame header of the radio frame, including: the second AP extracts the first indication information from the physical layer header of the radio frame The first indication information is parsed in the U-SIG field or the EHT-SIG field of the physical layer frame header of the radio frame.

With reference to the second aspect, in some implementations of the second aspect, the transmission requirement indication information includes second indication information, where the second indication information is used to indicate the transmission duration required by the first AP.

With reference to the second aspect, in some implementations of the second aspect, the second AP determines the first transmission resource according to the transmission requirement indication information, including: the second AP determines the first transmission resource according to the transmission duration and preset bandwidth required by the first AP The value determines the first transmission resource.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second AP parses the first 2. Instruction information.

With reference to the second aspect, in some implementations of the second aspect, the second AP parses the second indication information from the physical layer frame header of the radio frame, including: the second AP extracts from the physical layer frame header of the radio frame The second indication information is parsed in the U-SIG field of the radio frame or the EHT-SIG field of the physical layer frame header of the radio frame.

With reference to the second aspect, in some implementations of the second aspect, the transmission requirement indication information includes third indication information, where the third indication information is used to indicate the transmission bandwidth required by the first AP.

With reference to the second aspect, in some implementations of the second aspect, the second AP determines the first transmission resource according to the transmission requirement indication information, including: the second AP determines the first transmission resource according to the transmission bandwidth and preset duration required by the first AP The value determines the first transmission resource.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second AP parses the first Three instructions.

With reference to the second aspect, in some implementations of the second aspect, the second AP parses the third indication information from the physical layer frame header of the radio frame, including: the second AP extracts the third indication information from the physical layer frame header of the radio frame The third indication information is parsed in the U-SIG field of the radio frame or the EHT-SIG field of the physical layer frame header of the radio frame.

With reference to the second aspect, in some implementations of the second aspect, the transmission requirement indication information includes fourth indication information, where the fourth indication information is used to indicate at least one of the following: a time limit of the transmission requirement of the first AP, the first The direction of the transmission requirement of an AP, the type of data to be transmitted in the transmission requirement of the first AP, the cooperation mode required by the first AP, the transmission power required by the first AP, the transmission channel required by the first AP, and the transmission channel required by the second AP The ID of the AP.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second AP parses the fourth indication information from the medium access control protocol data unit MPDU of the wireless frame.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second AP sends a request frame to the first AP, where the request frame is used to request the first AP to send the radio frame.

In a third aspect, an apparatus for transmitting a demand indication is provided, the apparatus comprising: a processing unit and a transceiving unit. The processing unit is configured to generate a radio frame, where the radio frame includes transmission demand indication information, where the transmission demand indication information is used to indicate that the first AP needs to share transmission resources. The transceiver unit is used for sending the radio frame.

Optionally, the apparatus may correspond to the first AP in any possible implementation manners of the first aspect to the second aspect or the first aspect to the second aspect.

The device for transmission demand indication provided in this application can send transmission demand indication information to the second AP, where the transmission demand indication information is used to indicate that the first AP needs to share transmission resources, so that the second AP can know the transmission of the first AP. requirements, so as to allocate an appropriate amount of resources to the first AP in the subsequent multi-AP cooperative transmission, so that the transmission efficiency of the multi-AP cooperation can be improved.

With reference to the third aspect, in some implementations of the third aspect, the transmission requirement indication information includes first indication information, where the first indication information is used to indicate that the first AP has a transmission requirement.

With reference to the third aspect, in some implementations of the third aspect, the first indication information is carried in a physical layer header of the radio frame.

With reference to the third aspect, in some implementations of the third aspect, the first indication information is carried in the U-SIG field of the physical layer frame header of the radio frame or the EHT-SIG field of the physical layer frame header of the radio frame middle.

With reference to the third aspect, in some implementations of the third aspect, the transmission requirement indication information includes second indication information, where the second indication information is used to indicate the transmission duration required by the first AP.

With reference to the third aspect, in some implementations of the third aspect, the second indication information is carried in a physical layer header of the radio frame or a medium access control protocol data unit MPDU of the radio frame.

With reference to the third aspect, in some implementations of the third aspect, the second indication information is carried in the U-SIG field of the physical layer frame header of the radio frame or the EHT-SIG field of the physical layer frame header of the radio frame middle.

With reference to the third aspect, in some implementations of the third aspect, the transmission requirement indication information includes third indication information, where the third indication information is used to indicate the transmission bandwidth required by the first AP.

With reference to the third aspect, in some implementations of the third aspect, the third indication information is carried in a physical layer header of the radio frame or a medium access control protocol data unit MPDU of the radio frame.

With reference to the third aspect, in some implementations of the third aspect, the third indication information is carried in the U-SIG field of the physical layer frame header of the radio frame or the EHT-SIG field of the physical layer frame header of the radio frame middle.

With reference to the third aspect, in some implementations of the third aspect, the transmission requirement indication information includes fourth indication information, where the fourth indication information is used to indicate at least one of the following: a time limit of the transmission requirement of the first AP, the first The direction of the transmission requirement of an AP, the type of data to be transmitted in the transmission requirement of the first AP, the cooperation mode required by the first AP, the transmission power required by the first AP, the transmission channel required by the first AP, and the transmission channel required by the second AP The identifier of the AP, where the second AP is the sharing AP.

With reference to the third aspect, in some implementations of the third aspect, the fourth indication information is carried in a medium access control protocol data unit MPDU of the radio frame.

With reference to the third aspect, in some implementations of the third aspect, the transceiver unit is further configured to: receive a request frame, where the request frame is used to request the first AP to send the radio frame.

In a fourth aspect, an apparatus for transmitting a demand indication is provided, the apparatus comprising: a transceiver unit and a processing unit. The transceiver unit is configured to receive a radio frame from the first AP, where the radio frame includes transmission demand indication information, where the transmission demand indication information is used to indicate that the first AP needs to share transmission resources. A processing unit, configured to determine a first transmission resource according to the transmission requirement indication information, where the first transmission resource is a transmission resource that needs to be shared by the first AP.

Optionally, the apparatus may correspond to the second AP in any one of possible implementation manners of the first aspect to the second aspect or the first aspect to the second aspect.

The device for transmission requirement indication provided in this application can receive transmission requirement indication information from the first AP, where the transmission requirement indication information is used to indicate that the first AP needs to share transmission resources, so that the second AP can know the information of the first AP. transmission requirements, so as to allocate an appropriate amount of resources to the first AP in the subsequent multi-AP cooperative transmission, so that the transmission efficiency of multi-AP cooperation can be improved.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transmission requirement indication information includes first indication information, where the first indication information is used to indicate that the first AP has a transmission requirement.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is further configured to: parse the first indication information from the physical frame header of the radio frame.

With reference to the fourth aspect, in some implementations of the fourth aspect, the processing unit is specifically configured to: obtain from the U-SIG field of the physical layer frame header of the radio frame or the EHT-SIG field of the physical layer frame header of the radio frame parsing the first indication information.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transmission requirement indication information includes second indication information, where the second indication information is used to indicate the transmission duration required by the first AP.

With reference to the fourth aspect, in some implementations of the fourth aspect, the processing unit is specifically configured to: determine the first transmission resource according to the transmission duration and the preset bandwidth value required by the first AP.

With reference to the fourth aspect, in some implementations of the fourth aspect, the processing unit is further configured to: parse the second indication from the physical layer header of the radio frame or the medium access control protocol data unit MPDU of the radio frame information.

With reference to the fourth aspect, in some implementations of the fourth aspect, the processing unit is specifically configured to: obtain from the U-SIG field of the physical layer frame header of the radio frame or the EHT-SIG field of the physical layer frame header of the radio frame parsing the second indication information.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transmission requirement indication information includes third indication information, where the third indication information is used to indicate the transmission bandwidth required by the first AP.

With reference to the fourth aspect, in some implementations of the fourth aspect, the processing unit is specifically configured to: determine the first transmission resource according to a transmission bandwidth required by the first AP and a preset duration value.

With reference to the fourth aspect, in some implementations of the fourth aspect, the processing unit is further configured to: parse the third indication from the physical layer header of the radio frame or the medium access control protocol data unit MPDU of the radio frame information.

With reference to the fourth aspect, in some implementations of the fourth aspect, the processing unit is specifically configured to: obtain from the U-SIG field of the physical layer frame header of the radio frame or the EHT-SIG field of the physical layer frame header of the radio frame parsing the third indication information.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transmission requirement indication information includes fourth indication information, where the fourth indication information is used to indicate at least one of the following: a time limit of the transmission requirement of the first AP, the first The direction of the transmission requirement of an AP, the type of data to be transmitted in the transmission requirement of the first AP, the cooperation mode required by the first AP, the transmission power required by the first AP, the transmission channel required by the first AP, and the transmission channel required by the second AP The ID of the AP.

With reference to the fourth aspect, in some implementations of the fourth aspect, the processing unit is further configured to: parse the fourth indication information from the medium access control protocol data unit MPDU of the radio frame.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is further configured to: the second AP sends a request frame to the first AP, where the request frame is used to request the first AP to send the radio frame.

In a fifth aspect, an apparatus is provided, including a processor. The processor is coupled to the memory and is operable to execute instructions in the memory to cause the apparatus to perform the method of the first aspect to the second aspect or any one of the possible implementations of the first aspect to the second aspect. Optionally, the apparatus further includes a memory. Optionally, the apparatus further includes an interface circuit, and the processor is coupled to the interface circuit.

In a sixth aspect, a processor is provided, including: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the first aspect to the second aspect or any one of the possible implementations of the first aspect to the second aspect. method.

In a specific implementation process, the above-mentioned processor may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, and various logic circuits. The input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver, the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by a transmitter, and the input circuit and output The circuit can be the same circuit that acts as an input circuit and an output circuit at different times. The embodiments of the present application do not limit the specific implementation manners of the processor and various circuits.

In a seventh aspect, a processing apparatus is provided, including a processor and a memory. The processor is used to read the instructions stored in the memory, and can receive signals through a receiver and transmit signals through a transmitter, so as to execute any one of the first to second aspects or the first to second aspects. Possible implementations method in method.

Optionally, the processor is one or more, and the memory is one or more.

Alternatively, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

In the specific implementation process, the memory can be a non-transitory memory, such as a read only memory (ROM), which can be integrated with the processor on the same chip, or can be separately set in different On the chip, the embodiment of the present application does not limit the type of the memory and the setting manner of the memory and the processor.

The processing device in the above seventh aspect may be a chip, and the processor may be implemented by hardware or software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like; when implemented by software, the processor may be a logic circuit or an integrated circuit. When implemented, the processor can be a general-purpose processor, which is realized by reading software codes stored in a memory, and the memory can be integrated in the processor or located outside the processor and exist independently.

In an eighth aspect, a computer program product is provided, the computer program product comprising: a computer program (also referred to as code, or instructions), which, when the computer program is executed, causes the computer to execute the above-mentioned first to second aspects or the method in any possible implementation manner of the first aspect to the second aspect.

In a ninth aspect, a computer-readable medium is provided, the computer-readable medium stores a computer program (also referred to as code, or instruction) when it runs on a computer, causing the computer to execute the above-mentioned first to second aspects A method of implementation in any one of the possible implementations of the aspect or the first aspect to the second aspect.

In a tenth aspect, the present application provides a chip system, the chip system includes a processor and an interface for supporting a communication device to implement any one of the first to second aspects or the first to second aspects. the functions involved in the method. In a possible design, the chip system further includes a memory for storing necessary information and data of the aforementioned communication device. The chip system may be composed of chips, or may include chips and other discrete devices.

In an eleventh aspect, a communication system is provided, including the aforementioned first AP and the second AP.

Description of drawings

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

FIG. 2 is a schematic flowchart of a method for transmitting a demand indication according to an embodiment of the present application.

FIG. 3 is a schematic diagram of a frame format of transmission requirement indication information provided in an embodiment of the present application.

FIG. 4 is a schematic block diagram of an apparatus for transmitting a requirement indication provided by an embodiment of the present application.

FIG. 5 is a schematic block diagram of an apparatus for transmitting a requirement indication provided by an embodiment of the present application.

FIG. 6 is a schematic structural diagram of an apparatus for transmitting a demand indication provided by an embodiment of the present application.

FIG. 7 is a schematic structural diagram of a chip provided by an embodiment of the present application.

Detailed ways

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

The embodiments of the present application may be applied to a wireless local area network (wireless local area network, WLAN), and the WLAN may include multiple basic service sets (basic service sets, BSS). The network nodes of the BSS include APs and STAs. Each BSS may contain one AP and multiple STAs associated with the AP. The technical solutions of the embodiments of the present application can also be applied to various communication systems, such as: Wireless Local Area Network (Wireless Fidelity, Wi-Fi) system, Global System of Mobile communication (GSM) system, Code Division Multiple Access (Code Division Multiple Access) Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE frequency Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) ) communication system, the future fifth generation (5th Generation, 5G) system or new radio (New Radio, NR) and so on.

The above-mentioned AP may also be referred to as a wireless access point or a hotspot. APs are access points for user terminals to access wired networks, and are mainly deployed in homes, buildings, and campuses. A typical AP coverage radius is tens of meters to hundreds of meters. It should be understood that the AP can also be deployed outdoors. AP is equivalent to a bridge connecting wired network and wireless network. Its main function is to connect the clients of each wireless network together, and then connect the wireless network to Ethernet. At present, the main standard adopted by AP is the Institute of Electrical and Electronics Engineers (IEEE) 802.11 series. Specifically, the AP may be a terminal device or a network device with a wireless fidelity (wireless fidelity, WiFi) chip. Optionally, the AP may be a device supporting the WLAN standard.

In this application, STA represents a user terminal, so it may be directly referred to as a user terminal or a user hereinafter. The STA may be a wireless communication chip, a wireless sensor or a wireless communication terminal. For example, mobile phones supporting WiFi communication functions, tablet computers supporting WiFi communication functions, set-top boxes supporting WiFi communication functions, smart TVs supporting WiFi communication functions, smart wearable devices supporting WiFi communication functions, and computers supporting WiFi communication functions. Optionally, the STA may be a device supporting the WLAN standard.

FIG. 1 is a schematic diagram of an application scenario 100 of an embodiment of the present application. In FIG. 1, the system 100 includes an access point AP110 and an access point AP 120. Optionally, the system may further include stations STA111, STA 112, and STA 113 associated with the access point AP110, and the access point AP2 associates the sites STA 121, STA 122, and STA 123. Wherein, the access point AP1, the station STA111, the STA 112, and the STA 113 constitute the basic service set BSS1, and the access point AP2, the STA 121, the STA 122, and the STA 123 constitute the basic service set BSS2. In an example, the AP 110 and the AP 120 may cooperate in transmission to provide uplink or downlink transmission services for the same or different users. It should be understood that FIG. 1 is only a simplified schematic diagram for easy understanding, and the communication system may also include other APs or other STAs, etc., which is not limited in this application.

FIG. 2 is a schematic flowchart of a method 200 for transmitting a requirement indication according to an embodiment of the present application. The method 200 may be performed by the system 100 shown in FIG. 1 .

S210: The first access point AP generates a radio frame, where the radio frame includes transmission demand indication information, where the transmission demand indication information is used to indicate that the first AP needs to share transmission resources.

It should be understood that the transmission resources that the first AP needs to share may include at least one of the following situations:

Case 1: The first AP has a requirement for transmission resources. That is, the transmission requirement indication information may be used to indicate whether the first AP needs transmission resources.

Case 2: Transmission resources required by the first AP. In other words, the transmission requirement indication information can be used to indicate specific information of the transmission requirement of the first AP, such as the size of the required transmission resource, the time limit of the required transmission resource, the required transmission channel and other information. .

In other words, in this embodiment of the present application, the transmission requirement indication information in the radio frame generated by the first AP may be used to indicate that the first AP has a transmission requirement, or may be used to indicate specific information of the transmission requirement of the first AP. , can also be used to indicate that the first AP has a transmission requirement and a specific transmission requirement of the first AP, which is not limited in this application.

In a possible implementation manner, the first AP may send the first radio frame, and the transmission requirement indication information in the first radio frame is used for the transmission requirement of the first AP and/or the specific transmission requirement of the first AP.

In another possible implementation manner, the first AP may also send the first radio frame first, and the transmission requirement indication information in the first radio frame is used to indicate that the first AP has a transmission requirement, and then sends the second radio frame. The transmission requirement indication information in the second radio frame is used to indicate the specific information of the transmission requirement of the first AP.

S220, the first AP sends the radio frame. The second AP receives the radio frame from the first AP.

It should be understood that the radio frame sent by the first AP may not be sent to the second AP. In a possible implementation, when the first AP sends the radio frame to the station STA, the frame header of the physical layer of the radio frame may be It carries transmission demand indication information. After receiving the wireless frame, the second AP can parse the physical layer header of the wireless frame to obtain the transmission requirements of the first AP, that is, whether the first AP has transmission requirements, or specific information about the transmission requirements of the first AP.

The radio frame sent by the first AP may also be sent to the second AP. In a possible implementation manner, it may be that when the first AP sends the radio frame to the second AP, in the physical layer header of the radio frame Or a medium access control (Medium access control, MAC) protocol data unit (protocol data unit, PDU) MPDU carries transmission demand indication information. After receiving the radio frame, the second AP can parse fields in the physical layer frame header or MPDU, so as to obtain the transmission requirement of the first AP.

S230, the second AP determines a first transmission resource according to the transmission requirement indication information, where the first transmission resource is a transmission resource that the second AP needs to share with the first AP, and is also a transmission resource that the first AP needs to share.

The second AP can parse the radio frame to obtain the transmission requirements of the first AP, and further determine the transmission resources required by the first AP according to the transmission requirements.

In the method for transmission demand indication provided by this application, the first AP can send a radio frame, and the radio frame includes transmission demand indication information of the first AP, and the transmission demand indication information is used to indicate that the first AP needs to share transmission resources, so that the second AP needs to share transmission resources. The AP can learn the transmission requirement of the first AP, so as to allocate an appropriate amount of resources to the first AP in the subsequent multi-AP cooperative transmission, so that the transmission efficiency of the multi-AP cooperation can be improved.

In a possible implementation manner, the transmission requirement indication information may include first indication information, and the first indication information may be used to indicate that the first AP has a transmission requirement.

As an example, the first indication information indicates that the first AP has a transmission requirement, which may be implemented in the following manner.

The first indication information may be a 1-bit (bit) field. When the value of the field is the first value (for example, 0), it indicates that the first AP has no transmission requirement. When the value of the field is the second value ( For example, when it is 1), it indicates that the first AP has a transmission requirement. Or, when the value of this field is the first value, it indicates that the first AP has no transmission requirement. When the value of this field is the second value, it indicates that the first AP has a transmission requirement, and the second AP needs to send a request frame to the first AP to acquire the specific transmission requirement of the first AP.

The first indication information can also be a 2-bit field. When the value of the field is the first value (for example, 00), it indicates that the first AP has no transmission requirement. When the value of the field is the second value (for example, it is 01), it indicates that the first AP has a transmission requirement. When the value of this field is a third value (for example, 10), it indicates that the first AP has a transmission requirement, and the second AP needs to send a request frame to the first AP to obtain the size of the transmission requirement of the first AP.

It should be understood that if the first indication information indicates that the first AP has a transmission requirement, the second AP may send a request frame to the first AP, requesting the first AP to send the detailed requirement to the second AP, and further, the first AP sends the second AP The radio frame carries the specific transmission requirements of the first AP, so that the second AP determines the first transmission resources according to the specific requirements of the first AP, and tries to share the resources matching its requirements for the first AP, so as to improve the resource utilization of multi-AP cooperation Rate. That is to say, the first AP may send the first radio frame first, and the transmission requirement indication information of the first radio frame includes the first indication information. The first indication information is used to indicate that the first AP has a transmission requirement, and the second AP receives the first indication information. After a radio frame, if it is determined that it has suitable resources, it can send a request frame to the first AP to request the first AP to send a second radio frame. The second radio frame carries transmission demand indication information, and the transmission demand indication information can indicate the first The specific transmission requirements of an AP.

It should be understood that, after learning that the first AP has a transmission requirement, the second AP can also directly determine the first transmission resource according to information such as its own idle or remaining transmission resources, and share an appropriate amount of resources for the first AP, so that the first AP can The transmission resources can be obtained quickly and the communication delay can be reduced.

Therefore, this embodiment of the present application may indicate whether the first AP has a transmission requirement in the transmission requirement indication information, so that the second AP can determine whether to share transmission resources with the first AP according to the indication, thereby improving the transmission efficiency of multi-AP cooperation.

It should be understood that the above is only an example to illustrate how to indicate that the first AP has a transmission requirement through the first indication information, and does not constitute a limitation of the present application.

As a possible implementation manner, the transmission requirement indication information may include second indication information, where the second indication information is used to indicate a transmission duration (duration) required by the first AP. As an example, this can be achieved in the following way.

method one

A fixed duration unit U may be set, and the first AP maps the required transmission duration T to the duration number N according to the fixed duration unit U. The second indication information may include a first field, and the value of the first field is used to indicate the duration number N, where the first field may be 2 bits, 3 bits, 4 bits, etc. length. After receiving the second indication information, the second AP determines the duration number N according to the value of the first field, and further obtains the transmission duration required by the first AP.

Optionally, the mapping relationship between the required transmission duration T and the number of durations N can be represented by formula (1).

T=N*U (1)

Optionally, the mapping relationship between the required transmission duration T and the number of durations N can also be expressed by formula (2).

In formula (1) and formula (2), N is 0 or a positive integer. When N=0, T=0, indicating that the first AP has no transmission requirement.

It should be understood that formula (1) and formula (2) are only for illustration, and the mapping relationship between the required transmission duration T and the duration number N may also be expressed by other public announcements, which are not limited in this application.

Optionally, the first field may also indicate the range of the duration number N. For example, the length of the first field is 2 bits, and the value of the first field may be 0, 1, 2, or 3. When the value of the first field is When it is 0-2, it indicates that the number of durations N is 0, 1, and 2, respectively. When the value of the first field is 3, it means that the number of durations N is a value greater than or equal to 3. The indication method can also be that the value of the first field is 0, the number of durations N is in the range of 0-4, the value of the first field is 1, the range of the number of durations is 5-9, and the value of the first field If it is 1, the duration number N is in the range of 10-14, the value of the first field is 2, and the duration number is in the range of 15-19.

The value of the fixed duration unit U may be a value specified in the standard, for example, it may be set to the length of the time unit TU specified in the 802.11 standard, that is, U=TU=1024us. The fixed duration unit U can also be set to other durations. This application does not limit this. It should be understood that the duration unit U may also be indicated by a scaling factor bit.

As a possible implementation manner, the fixed duration unit U may be indicated by the first AP to the second AP. That is to say, the first indication information may also include a second field, and the second field is used to indicate a fixed duration unit U. For example, when a 3-bit field is used to indicate a fixed duration unit U, the mapping relationship between the value of this field and the duration unit U may be as shown in Table 1. When a 1-bit or 2-bit field is used to indicate a fixed duration unit U, the value of this field can also indicate that the duration unit U is a part of 8us, 16us, 32us, 64us, 128us, 256us, 512us, and 1024us, respectively.

Table 1

bit	time unit U
‘000’	8us
‘001’	16us
‘010’	32us
‘011’	64us
‘100’	128us
‘101’	256us
‘110’	512us
‘111’	1024us

It should be understood that the above only takes Table 1 as an example to illustrate the correspondence between the time unit U and the second field. The time unit U in Table 1 can also be other values, and the bits of the second field can also be other values. The corresponding relationship between the field and the time unit U may also have other manners, which are not limited in this application.

Method 2

The value of the second indication information may represent the number of bytes M, which is not the number of bytes to be transmitted by the first AP, but is based on the transmission duration T required by the first AP and the distance between the first AP and the second AP. The number of bytes calculated by the channel quality of , that is, the number of bytes M has a corresponding relationship with the transmission duration T required by the first AP. The first AP can map the required transmission duration to the number of bytes M according to the channel quality between the first AP and the second AP, and then use the value of the first indication information to represent the number of bytes M, and the second AP receives the number M of bytes. After the second indication information is reached, the transmission duration T required by the first AP is obtained according to the number of bytes M.

As an example, the mapping relationship between the required transmission duration T and the number of bytes M can be represented by formula (3).

In formula (3), K represents the number of bytes that can be transmitted in a unit time under the specified bandwidth, under the condition of channel quality between the first AP and the second AP. where M is 0 or a positive integer. When M=0, T=0, indicating that the first AP has no transmission requirement.

It should be understood that the mapping relationship between the required transmission duration T and the number of bytes M may also be represented by other public announcements, which is not limited in this application.

As a possible implementation manner, a bandwidth value may be preset in the first AP and the second AP, the transmission duration indicated by the first AP is based on the preset bandwidth value, and the second AP may The bandwidth value determines the first transmission resource, and the first transmission resource is the transmission resource that the second AP needs to share with the first AP. The preset bandwidth value may be a value specified in the standard, or may be another preset value, such as 20 MHz, which is not limited in this application.

For example, the preset bandwidth value can be 20MHz, and the time unit TU=1024us specified in the standard can be used. When the value of the field in the first indication information is 8, the second AP can use the first indication information to the first AP according to the first indication information. The required transmission duration is 8TU. Therefore, the second AP may determine that the first transmission resource is a resource block with a transmission duration of 8TU and a bandwidth of 20MHz according to the transmission duration and the preset bandwidth value. The second AP can also be equivalent to the first transmission resource as a resource block with a transmission duration of 4TU and a bandwidth of 40MHz, and then the second AP performs flexible allocation according to information such as the first transmission resource and the idle transmission resources of the second AP. .

It should be understood that when the value of the duration quantity N indicates a range, the second AP may determine the transmission duration required by the first AP according to its remaining transmission resources, or may send the transmission duration to the first AP according to the previous coordinated transmission with the first AP. The transmission resource shared by the AP determines the transmission duration required by the first AP, and further determines the first transmission resource, which is not limited in this application.

As a possible implementation manner, the transmission requirement indication information may include third indication information, where the third indication information is used to indicate a transmission bandwidth (bandwidth) required by the first AP. As an example, this can be achieved in the following way.

The values of the third indication information can be used to represent different bandwidth sizes. For example, when the length of the third indication information is 2 bits or 3 bits, the mapping relationship between the value of the third indication information and the transmission bandwidth may be as shown in Table 2.

Table 2

Bits (2bits)	Bits (3bits)	Transmission bandwidth
‘00’	‘000’	20MHz
‘01’	‘001’	40MHz
‘10’	‘010’	80MHz
‘11’	‘011’	160MHz
	‘100’	320MHz

It should be understood that Table 2 is used as an example to describe how to indicate the transmission bandwidth. The transmission bandwidth in Table 2 may also be other values, and the bits of the third indication information may also be other values, which are not limited in this application.

It should be understood that the duration value can be preset in the first AP and the second AP, the transmission bandwidth indicated by the first AP is based on the preset duration value, and the second AP can determine the first AP according to the second indication information and the preset duration value. transfer resources. The preset duration value may be specified by a standard, or may be other preset values, such as 16us. After the second AP determines the first transmission resource, it should try to ensure that the bandwidth allocated to the first AP is not less than the required bandwidth in the subsequent multi-AP cooperative transmission. If it is not reached, compensation should be made on the allocated transmission duration. The specific compensation method includes allocating more transmission duration so that the product of the bandwidth and the duration is satisfied.

As a possible implementation manner, the transmission requirement indication information may include both second indication information and third indication information. The second indication information is used to indicate the transmission duration required by the first AP, and the third indication information is used to indicate the transmission duration required by the first AP. Indicates the transmission bandwidth required by the first AP. The second AP determines the first transmission resource according to the transmission duration and the transmission bandwidth, and the first transmission resource is the transmission resource that the second AP needs to share with the first AP.

As a possible implementation manner, the transmission demand indication information may include fourth indication information, and the fourth indication information may be used to indicate at least one of the following: the duration of the transmission demand of the first AP, the direction of the transmission demand of the first AP, The transmission requirements of the first AP include the type of data to be transmitted, the cooperation mode required by the first AP, the transmission power required by the first AP, the transmission channel required by the first AP, and the identifier of the second AP.

As an example, the fourth indication information may include a third field, where the third field is used to indicate a delay of the transmission requirement of the first AP. It should be understood that the time limit of the transmission requirement of the first AP can be understood as the time limit requirement of the transmission resources required by the first AP, that is, how long the first AP needs to obtain the required transmission resources. Alternatively, it can also be understood as whether the transmission resource required by the first AP is a time-sensitive requirement.

The third field can be 1 bit. When the bit takes the first value, it indicates that the transmission requirement of the first AP is a low-latency requirement. When the bit takes the second value, it indicates that the first AP has a non-low-latency requirement. need.

It should be understood that in this case, the second AP may not be able to know the specific period of the transmission requirement of the first AP according to the transmission requirement indication information, but when the second AP determines that the transmission requirement of the first AP is a low-latency requirement, The second AP will allocate resources to it as soon as possible.

The value of the third field may also be used to represent the time limit of the transmission requirement of the first AP, and the time limit indicates that the first AP needs to obtain transmission resources within this time period. For example, when the value of the third field is 8, it means that the first AP needs to obtain transmission resources within 8TUs. For example, the corresponding relationship between the value of the third field and the time limit can also be configured, and different values of the third field correspond to different time limit values. For example, the value of the third field is 0, indicating that the transmission of the first AP The duration of the demand is 5ms, and the value of the third field is 1, indicating that the duration of the transmission demand of the first AP is 10ms. Alternatively, different values of the third field can also be used to correspond to different duration ranges. For example, the value of the third field is 0, indicating that the duration of the transmission requirement of the first AP is 1-4ms, and the value of the third field is 1, indicating that the transmission requirement of the first AP has a duration of 5-8ms.

It should be understood that the above is only for illustration, and does not constitute a limitation of the embodiments of the present application.

When the second AP receives the radio frame, the second AP may determine the time limit of the transmission requirement of the first AP according to the third field in the fourth indication information, and may further allocate transmission resources to the first AP before the time limit arrives.

As an example, the fourth indication information may include a fourth field, where the fourth field is used to indicate the direction of the transmission requirement of the first AP. The direction of the transmission requirement includes at least one of the following: the transmission resource required by the first AP is for uplink (uplink, UL) transmission, the transmission resource required by the first AP is for downlink (downlink, DL) transmission, the first The transmission resources required by the AP are used for bidirectional (UL and DL) transmission, and the transmission resources required by the first AP are used for device-to-device (device-to-device, D2D) transmission. The value of the fourth field can be used to indicate the direction of the transmission requirement of the first AP. For example, it can be indicated by a 1-bit field or a 2-bit field. The mapping relationship between the value of this field and the direction of the transmission requirement can be shown in Table 3.

table 3

Bit (1bit)	Bits (2bits)	direction
‘0’	‘00’	The transmission requirement of the first AP is used for uplink transmission
'1'	‘01’	The transmission requirement of the first AP is used for downlink transmission
	‘10’	The transmission requirements of the first AP are used for bidirectional transmission
	‘11’	The transmission requirement of the first AP is used for D2D transmission

After the second AP receives the wireless frame, it can determine the direction of the transmission requirement of the first AP according to the fourth field in the fourth indication information, and in the subsequent multi-AP cooperative transmission, it can assign the direction of its requirement to the first AP. Matching transmission resources, thereby improving the transmission efficiency of multi-AP cooperation.

As an example, the fourth indication information may include a fifth field, where the fifth field is used to indicate the type of data to be transmitted in the transmission requirement of the first AP.

Optionally, the type of the data to be transmitted may specifically include an access category (access category, AC) to which the data to be transmitted belongs, or which service identifiers (traffic identity, TID) these data specifically include. That is, the fifth field may be used to indicate the specific information of the AC, including one or more access types, and may also be used to indicate the number of TIDs, including one or more TIDs.

Among them, the standard 802.11 provides four different access categories (access category, AC), namely voice service (voice traffic, AC_VO), video service (video traffic, AC_VI), best effort service (best effort traffic, AC_BE) ) and background traffic (background traffic, AC_BK). In addition, there are 8 different traffic identities (TIDs) provided by the standard 802.11, with values ranging from 0 to 7, indicating different traffic types. The corresponding relationship between AC and TID is shown in Table 4.

Table 4

In a possible implementation manner, the fifth field may include two subfields of AC indication (AC index, ACI) bitmap (bitmap) and delta (Delta, Δ) ITD. The ACI bitmap occupies 4 bits and is used to indicate the detailed information of the AC, that is, the status of each AC service. The Delta TID occupies 2 bits, and the ACI bitmap (bitmap) and the Delta ITD together indicate the number of TIDs. In this way, the definition of the ACI bitmap subfield and the definition of the Delta ITD can refer to the stipulations in the standard 802.11ax.

In a possible implementation manner, the fifth field may include two subfields, an ACI bitmap (bitmap) and the number of TIDs N _ITD . The ACI bitmap occupies 4 bits and is used to indicate the detailed information of the AC, that is, the status of each AC service. N _TID occupies 3 bits, which are used to indicate the number of TIDs. The values of the N _TID subfield are 0-7, and each value indicates the number of one type of TID, so it can indicate that the number of TIDs can be 1, Any of 2, 3, 4, 5, 6, 7, 8. In this way, the definition of the ACI bitmap subfield can refer to the stipulations in the standard 802.11ax.

In a possible implementation manner, the fifth field may be in the form of a TID bitmap (bitmap), which occupies 8 bits and is used to indicate the detailed information of the TID, that is, the status of the service corresponding to each TID.

After the second AP receives the wireless frame, it can determine the type of data to be transmitted in the transmission requirement of the first AP according to the fifth field in the fourth indication information, so as to determine the information of the service that the resources required by the first AP are used for transmission , which type of data is used to transfer. In the subsequent multi-AP cooperative transmission, the second AP can timely schedule transmission resources that match the data type to be transmitted by the first AP, so that the transmission efficiency of multi-AP cooperation can be improved.

As an example, the fourth indication information may include a sixth field, where the sixth field is used to indicate a cooperation mode (mode) required by the first AP. It should be understood that the cooperation mode required by the first AP indicates which cooperation mode the first AP wishes to adopt to perform multi-AP coordinated transmission.

Common transmission cooperation modes (modes) mainly include: coordinated orthogonal frequency division multiple access OFDMA (co-ordinated orthogonal frequency division multiple access, co-OFDMA), coordinated time division multiple access (coordinated time division multiple access, co-TDMA), coordinated Coordinated spatial reuse (co-SR), coordinated beamforming (co-BF) and joint transmission.

The value of the sixth field may indicate the cooperation mode required by the first AP, in this case, the sixth field indicates a cooperation mode required by the first AP. For example, it can be indicated by a 2-bit or 3-bit field, and the mapping relationship between the value of this field and the required cooperation mode can be as shown in Table 5.

table 5

Bits (2bits)	Bits (3bits)	Collaborative mode
‘00’	‘000’	co-OFDMA
‘01’	‘001’	co-TDMA
‘10’	‘010’	co-SR
‘11’	‘011’	co-BF
	‘100’	joint transmission

The form of bitmap (bitmap) can also be used, and each bit corresponds to a cooperation mode. For example, the first bit in this field indicates co-OFDMA, the second indicates co-TDMA, and the third indicates co-SR. The value of each bit indicates whether the cooperation mode corresponding to the bit is the cooperation mode required by the first AP. If the form of a bitmap is used, the sixth field may indicate one or more cooperation modes. That is, the first AP can use any one of these cooperative modes to perform multi-AP cooperative transmission.

It should be understood that the above indication manner is only for illustration, and does not constitute a limitation to the embodiments of the present application.

After the second AP receives the radio frame, it can determine the transmission mode required by the first AP according to the sixth field in the fourth indication information, and in the subsequent multi-AP cooperative transmission, the cooperation required by the first AP can be used as much as possible. The mode performs multi-AP cooperation with the first AP, so that the transmission efficiency of the multi-AP cooperation can be improved.

As an example, the fourth indication information may include a seventh field, where the seventh field is used to indicate the transmission power required by the first AP. The transmission power required by the first AP may be represented by the value of the seventh field. For example, it may be indicated by a 2-bit field, and the mapping relationship between the value of this field and the required transmission power may be as shown in Table 6.

Table 6

Bits (2bits)	Transmission power
‘00’	unlimited
‘01’	at least 5dBm
‘10’	at least 10dBm
‘11’	at least 15dBm

It should be understood that Table 6 is only for illustration, and the seventh field can be used to indicate the total transmission power required by the first AP (as shown in Table 6), and can also be used to indicate the power of the first AP under different bandwidths, for example The indicated transmission power is at least 10dBm/20MHz, which is not limited in this application. In addition, the seventh field can also occupy more bits, and can also indicate more different transmission powers. It can also be 1 bit, indicating two different transmission powers, or whether the first AP has requirements for transmission power. .

After the second AP receives the radio frame, it can determine the transmission power required by the first AP according to the seventh field in the fourth indication information. In the subsequent multi-AP cooperative transmission, the second AP makes the first AP's transmission as much as possible. The power meets its requirements, so that the transmission efficiency of multi-AP cooperation can be improved.

As an example, the fourth indication information may include an eighth field, where the eighth field is used to indicate a transmission channel required by the first AP. The transmission channel required by the first AP may include any one or more of the 20MHz channels in which the first AP works, any one or more of the 40MHz channels in which the first AP works, and any of the 80MHz channels in which the first AP works. One or more, any one or more of the 160MHz channels on which the first AP works, or any one or more of the 320MHz channels on which the first AP works.

The transmission channel required by the first AP may be represented by the value of the eighth field. For example, it can be indicated by a 2-bit or 3-bit field, and the mapping relationship between the value of this field and the transmission channel can be as shown in Table 7.

Table 7

It should be understood that Table 7 is only for illustration, and does not constitute a limitation to the embodiments of the present application.

After the second AP receives the wireless frame, it can determine the transmission channel required by the first AP according to the eighth field in the fourth indication information. In the subsequent multi-AP cooperative transmission, the first AP can use the required transmission channel as much as possible. Multi-AP cooperation can be carried out on the transmission channel, so that the transmission efficiency of multi-AP cooperation can be improved.

As an example, the fourth indication information may include a ninth field, where the ninth field is used to indicate the identity of the second AP. The first AP can determine that the quality of the transmission resources allocated by the second AP is better according to the previous cooperative transmission record. Therefore, the identifier of the second AP is indicated by the ninth field in the fourth indication information, and the identifier indicates that the first AP wishes to obtain Transmission resources of the second AP. It should be understood that in this case, the second AP may not have idle transmission resources. After receiving the radio frame, the second AP can use the identifier indicated by the ninth field in the fourth indication information and the resource utilization of the second AP. In some cases, appropriate transmission resources are allocated to the first AP, or transmission resources may not be allocated to the first AP.

It should be understood that the fourth indication information may also not include the ninth field, that is, the first AP determines that there is a transmission requirement and the specific information of the transmission requirement, but the first AP does not limit which one of the sharing APs is, so the transmission requirement of the wireless frame is determined by the first AP. The indication information indicates the transmission requirement of the first AP, but the transmission requirement indication information may not include the identifier of the second AP.

It should be understood that the fourth indication information may include at least one field from the third field to the ninth field above, indicating the duration of the transmission request of the first AP, the direction of the transmission request of the first AP, and the transmission request of the first AP to be transmitted At least one of the transmission requirements among the type of data, the cooperation mode required by the first AP, the transmission power required by the first AP, the transmission channel required by the first AP, and the identifier of the second AP. The number of fields included in the indication information is not limited.

It should be understood that the embodiment of the present application does not limit the indication manner of each field in the transmission requirement indication information and the number of bits occupied by each field.

In the embodiment of the present application, the transmission requirement indication information in the radio frame may include multiple pieces, wherein the transmission requirement carried by each transmission requirement indication information may be different. Exemplarily, different transmission demand indication information may be used for transmission demands in different directions. For example, a radio frame may include four transmission demand indication information, each of which is respectively for uplink, downlink, bidirectional and D2D transmission demands. Similarly, the multiple transmission requirement indication information may be for different data types to be transmitted, for different access types, or for different cooperation modes, etc., which is not limited in this application.

As a possible implementation manner, the first AP may divide the required transmission requirements into low-latency requirements and non-low-latency requirements according to the delay requirements of the data to be transmitted or the duration of the transmission requirements. The first AP may include first transmission demand indication information and second transmission demand indication information in the radio frame, where the first transmission demand indication information is used to indicate the low latency requirement of the first AP, and the second transmission demand indication information is used to indicate All needs of the first AP.

For example, the first AP determines that the current transmission requirement includes transmission resources with a transmission duration of 8s and a transmission bandwidth of 40MHz. The resources with a transmission duration of 1s and a transmission bandwidth of 40MHz need to be allocated within 2s, with a duration of 8s and a bandwidth of 40MHz. The total demand needs to be allocated within 10s. If the third field is 4 bits, the first transmission requirement indication information may include fourth indication information, the fourth indication information may include a third field, and the third field may be "0000", which is converted to decimal, and the value is 1, indicating that The time limit of the demand in the indication information is 1s, the second transmission demand indication information may include fourth indication information, the fourth indication information may include a third field, and the third field may be "1001", converted to decimal, the value is 10, indicating that the time limit of the demand in the indication information is 10s. If the third field is 1 bit, the third field in the first transmission demand indication information may be "1", indicating that the demand is a low-latency demand, and the third field in the second transmission demand indication information may be "0", indicating that This requirement is a non-low latency requirement. Wherein, the first transmission demand indication information may include second indication information and/or third indication information, thereby indicating a resource with a transmission duration of 1s and a transmission bandwidth of 40MHz, and the second transmission demand indication information may include second indication information and/or or the third indication information, so as to indicate a resource with a transmission duration of 8s and a transmission bandwidth of 40MHz.

As an example, the first indication information may be carried in the physical layer header of the radio frame. The second indication information may be carried in the physical layer header of the radio frame, or may be carried in the medium access control (medium access control, MAC) protocol data unit (protocol data unit, PDU) MPDU of the radio frame. The third indication information may be carried in the physical layer header of the radio frame, or may be carried in the MPDU of the radio frame. The fourth indication information may be carried in the MPDU of the radio frame. The transmission requirement indication information may include at least one of the foregoing first indication information, second indication information, third indication information, and fourth indication information.

Therefore, the second AP can parse the first indication information from the physical layer header of the radio frame, can parse the second indication information from the physical layer header of the radio frame or the MPDU of the radio frame, and can parse the second indication information from the physical layer frame of the radio frame The third indication information is parsed from the header or the MPDU of the radio frame, and the fourth indication information may be parsed from the MPDU of the radio frame.

Optionally, the transmission requirement indication information in the radio frame may include the above-mentioned first indication information and second indication information, the first indication information is carried in the physical layer header of the radio frame, and the second indication information is carried in the MPDU of the radio frame. middle.

Therefore, after receiving the radio frame, the second AP can parse the first indication information from the physical layer frame header of the radio frame, so as to know that the first AP has a transmission requirement, and then parse the second indication information in the MPDU of the radio frame. , so as to obtain the transmission duration required by the first AP, and further determine the first transmission resource.

It should be understood that the first indication information and the second indication information may be carried in the first radio frame and the second radio frame respectively, or may be carried in the same radio frame.

Optionally, the transmission requirement indication information in the radio frame may include the foregoing second indication information and third indication information, and both the second indication information and the third indication information are carried in the physical layer header of the radio frame.

Therefore, after receiving the radio frame, the second AP can parse the second indication information and the third indication information from the physical layer frame header of the radio frame, so as to know the transmission duration and transmission bandwidth required by the first AP, and further determine the first AP. a transmission resource.

Optionally, the first radio frame sent by the first AP may include first indication information, the first indication information is carried in the physical layer frame header of the first radio frame, and the second AP starts from the physical layer frame header of the first radio frame. The first indication information is parsed in the middle, and it is learned that the first AP has a transmission requirement, so a request frame can be sent to the first AP to request the first AP to send the second wireless frame. Further, the first AP carries transmission demand indication information in the second radio frame, and the transmission demand indication information may include the above-mentioned second indication information, third indication information and fourth indication information, wherein the second indication information and the third indication information Both the information and the fourth indication information are carried in the MPDU of the first radio frame. Therefore, after receiving the second radio frame, the second AP can parse the second indication information, the third indication information and the fourth indication information from the MPDU of the second radio frame, so as to know the transmission duration required by the first AP and transmission bandwidth to further determine the first transmission resource, and the second AP can also learn the duration of the transmission demand of the first AP, the direction of the transmission demand of the first AP, and the data to be transmitted in the transmission demand of the first AP according to the fourth indication information At least one type of information, the cooperation mode required by the first AP, the transmission power required by the first AP, the transmission channel required by the first AP, and the identity of the second AP.

It should be understood that the information included in the above transmission requirement indication information and the location carried by each indication information are only for illustration, and are not limited in this application.

As an example, when at least one of the first indication information, the second indication information, and the third indication information is carried in the physical layer frame header, specifically, a universal signal (universal signal, U- SIG) part, or the extremely high throughput signal (extremely high throughput, EHT-SIG) part carried in the physical layer frame header. Use the undefined bits (Dis-Regard bits). As shown in Table 8, it can be carried in reserved bits in Table 8.

Table 8

Therefore, in this embodiment of the present application, the first indication information and/or the second indication information and/or the third indication information in the transmission demand indication information of the first AP are carried in the physical layer frame header, so that any device can The transmission requirement can be received, so the transmission resources required by the first AP can be satisfied quickly, so that the efficiency of cooperative transmission can be improved.

As an example, when at least one of the second indication information, the third indication information, and the fourth indication information is carried in the MPDU of the radio frame, specifically, certain fields in the MAC header (header) of the MPDU may be used to carry the indication Requirements such as transmission time, transmission bandwidth, delay/period, etc.

As an example, the transmission requirement indication information may be carried in the HT control field (field) in the MAC Header in the MPDU, and specifically, the A-control subfield in the HE variant (HE variant) of the HT control field may be used. It should be noted that the HE variant includes an A-control subfield, the A-control subfield includes a Control List subfield and a Padding subfield, and the Control List subfield includes one or more Control subfields (subfields). The Control subfield includes a control ID (control ID) and control information (control information), where the control ID is the meaning defined in the standard and represents different types of control information. In this application, more specifically, the transmission requirement indication information can be carried in the control information (control information). As an example, the format of the Control subfield and the frame structure of the transmission requirement indication information can be the formats shown in FIG. 3 .

It should be understood that in FIG. 3, ACI is an AC indicator (AC index), and one ACI corresponds to one AC. The ACI bitmap subfield can occupy 4 bits, and the value of each bit indicates the buffer status of the corresponding AC service. For example, the first bit of the ACI bitmap is 1, indicating that there is an AC_BK service waiting. Transmission, the first bit is 0, indicating that there is no AC_BK service to be transmitted. The high-priority ACI subfield is used to indicate an AC with a high priority among the AC services to be transmitted, which indicates an AC service and can be represented by two bits. For example, the bit of the high-priority ACI is "10", indicating that the high-priority AC service is AC_VI. The Delt TID subfield can indicate the number of TIDs together with the ACI bitmap subfield, indicating how many TID services are to be sent. The definitions of the ACI bitmap and the Delt TID may adopt the meanings in the standard 802.11ax, or may use other definitions, which are not limited in this application. For the meaning of each field and indication information in FIG. 3 , reference may be made to the above description, which will not be repeated here.

It should be understood that the frame format in FIG. 3 is only an example of the format of the transmission demand indication information, and the transmission demand indication information in this application may also carry more or less information, and may include part of the fields in FIG. 3 or All fields may also include other fields, which are not limited in this application.

Therefore, in the embodiment of the present application, the transmission requirement indication information of the first AP is carried in the MPDU of the radio frame, so that the first AP can use more bits to indicate more and more accurate transmission requirements, thereby improving cooperative transmission. s efficiency.

As an example, the transmission requirement indication information included in the radio frame of the first AP may also be called a second buffer status report (BSR), but it should be noted that the format of the second BSR defined in this application The format of the first BSR sent by the station STA to the AP may be similar, but the information carried has some changes. Therefore, in this embodiment of the present application, the existing first BSR can be used to change its format to carry the transmission requirement indication information of the first AP, so that the second AP can learn the transmission requirement of the first AP during multi-AP cooperation. And allocating an appropriate amount of resources to it can improve the transmission efficiency of multi-AP cooperation.

Optionally, in a possible implementation manner, the method further includes: the second AP sends a request frame to the first AP, where the request frame is used to request the first AP to send the radio frame.

It should be understood that the second AP may actively send a request frame to the first AP after initiating multi-AP transmission, or may send a request frame to the first AP when the second AP determines that the first AP has a transmission demand according to the transmission demand indication information of the first AP. The AP sends a request frame to request the first AP to send a radio frame, so as to obtain specific transmission requirements of the first AP.

It should also be understood that if the second AP sends a request frame to the first AP, the radio frame sent by the first AP may also be referred to as a response frame.

As an example, the request frame sent by the second AP may be a BSRP Trigger frame.

The method for transmitting the demand indication provided by the embodiment of the present application is described in detail above with reference to FIG. 2 to FIG. 3 . The apparatus for transmitting demand indication provided by the embodiment of the present application will be described in detail below with reference to FIG. 4 and FIG. 5 . It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments. Therefore, for the parts not described in detail, reference may be made to the foregoing method embodiments.

FIG. 4 is a schematic block diagram of an apparatus 400 for transmitting a requirement indication provided by an embodiment of the present application. As shown in FIG. 4 , the apparatus 400 may include a processing unit 410 and a transceiver unit 420 .

In an implementation manner, the apparatus 400 may correspond to the first AP in the above-mentioned method 200, for example, may specifically be the first AP or a chip configured in the first AP. Moreover, each unit in the communication device 400 is respectively to implement the operations performed by the first AP in the method 200 .

Specifically, the processing unit 410 is configured to generate a radio frame, where the radio frame includes transmission demand indication information, and the transmission demand indication information is used to indicate that the first AP needs to share transmission resources.

The transceiver unit 420 is configured to transmit the radio frame.

Optionally, the transmission requirement indication information includes first indication information, where the first indication information is used to indicate that the first AP has a transmission requirement.

Optionally, the first indication information is carried in a physical layer header of the radio frame.

Optionally, the first indication information is carried in the U-SIG field or the EHT-SIG field of the physical layer frame header of the radio frame.

Optionally, the transmission requirement indication information includes second indication information, where the second indication information is used to indicate the transmission duration required by the first AP.

Optionally, the second indication information is carried in a physical layer frame header of the radio frame or a medium access control protocol data unit MPDU of the radio frame.

Optionally, the second indication information is carried in the U-SIG field or the EHT-SIG field of the physical layer frame header of the radio frame.

Optionally, the transmission requirement indication information includes third indication information, where the third indication information is used to indicate the transmission bandwidth required by the first AP.

Optionally, the third indication information is carried in a physical layer frame header of the radio frame or a medium access control protocol data unit MPDU of the radio frame.

Optionally, the third indication information is carried in the U-SIG field or the EHT-SIG field of the physical layer frame header of the radio frame.

Optionally, the transmission requirement indication information includes fourth indication information, where the fourth indication information is used to indicate at least one of the following:

The duration of the transmission requirement of the first AP, the direction of the transmission requirement of the first AP, the type of data to be transmitted in the transmission requirement of the first AP, the cooperation mode required by the first AP, the transmission power required by the first AP, the The transport channel required by one AP and the identifier of the second AP, the second AP is a shared AP.

Optionally, the fourth indication information is carried in the medium access control protocol data unit MPDU of the radio frame.

Optionally, the transceiver unit 420 is further configured to: receive a request frame, where the request frame is used to request the first AP to send the radio frame.

FIG. 5 is a schematic block diagram of an apparatus 500 for transmitting a requirement indication provided by an embodiment of the present application. As shown in FIG. 5 , the apparatus 500 may include a processing unit 510 and a transceiver unit 520 .

In an implementation manner, the apparatus 500 may correspond to the second AP in the foregoing method 200, for example, may be the second AP or a chip configured in the second AP. Moreover, each unit in the communication device 500 is to implement the operations performed by the second AP in the method 200 respectively.

Specifically, the transceiver unit 520 is configured to receive a radio frame from the first AP, where the radio frame includes transmission demand indication information, where the transmission demand indication information is used to indicate that the first AP needs to share transmission resources.

The processing unit 510 is configured to determine a first transmission resource according to the transmission requirement indication information, where the first transmission resource is a transmission resource that needs to be shared by the first AP.

Optionally, the transmission requirement indication information includes first indication information, where the first indication information is used to indicate that the first AP has a transmission requirement.

Optionally, the processing unit 510 is further configured to: parse the first indication information from the physical frame header of the radio frame.

Optionally, the processing unit 510 is specifically configured to: parse the first indication information from the U-SIG field or the EHT-SIG field of the physical layer header of the radio frame.

Optionally, the transmission requirement indication information includes second indication information, where the second indication information is used to indicate the transmission duration required by the first AP.

Optionally, the processing unit 510 is specifically configured to: determine the first transmission resource according to the transmission duration required by the first AP and the preset bandwidth value.

Optionally, the processing unit 510 is further configured to: parse the second indication information from the physical layer header of the radio frame or the medium access control protocol data unit MPDU of the radio frame.

Optionally, the processing unit 510 is specifically configured to: parse the second indication information from the U-SIG field or the EHT-SIG field of the physical layer header of the radio frame.

Optionally, the transmission requirement indication information includes third indication information, where the third indication information is used to indicate the transmission bandwidth required by the first AP.

Optionally, the processing unit 510 is specifically configured to: determine the first transmission resource according to the transmission bandwidth required by the first AP and the preset duration value.

Optionally, the processing unit 510 is further configured to: parse the third indication information from the physical layer header of the radio frame or the medium access control protocol data unit MPDU of the radio frame.

Optionally, the processing unit 510 is specifically configured to: parse the third indication information from the U-SIG field or the EHT-SIG field of the physical layer header of the radio frame.

Optionally, the transmission requirement indication information includes fourth indication information, where the fourth indication information is used to indicate at least one of the following:

The duration of the transmission requirement of the first AP, the direction of the transmission requirement of the first AP, the type of data to be transmitted in the transmission requirement of the first AP, the cooperation mode required by the first AP, the transmission power required by the first AP, the The transport channel required by one AP and the identity of the second AP.

Optionally, the processing unit 510 is further configured to: parse the fourth indication information from the medium access control protocol data unit MPDU of the radio frame.

Optionally, the transceiver unit 520 is further configured to: send a request frame to the first AP, where the request frame is used to request the first AP to send the radio frame.

It should be understood that the specific process of each unit performing the above-mentioned corresponding steps has been described in detail in the above-mentioned method embodiments, and for the sake of brevity, it will not be repeated here.

FIG. 6 is a schematic structural diagram of an apparatus for transmitting a demand indication provided by an embodiment of the present application. As shown in FIG. 6 , the apparatus 600 may include: a processor 601 , a transceiver 605 , and optionally a memory 602 . The device can be used as a transmitting device of the radio frame in this application, and can also be used as a receiving device of the radio frame in this application.

The transceiver 605 may be called a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to implement a transceiver function. The transceiver 605 may include a receiver and a transmitter, the receiver may be called a receiver or a receiving circuit, etc., for implementing a receiving function, and the transmitter may be called a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

Stored in memory 602 may be a computer program or software code or instructions 604, which may also be referred to as firmware. The processor 601 can control the MAC layer and the PHY layer by running the computer program or software code or instruction 603 therein, or by calling the computer program or software code or instruction 604 stored in the memory 602, so as to realize the following aspects of the present application. The embodiment provides a method for transmitting a requirement indication. Wherein, the processor 601 can be a central processing unit (central processing unit, CPU), and the memory 602 can be, for example, a read-only memory (read-only memory, ROM), or a random access memory (random access memory, RAM).

The processor 601 and transceiver 605 described in this application may be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application specific integrated circuits (ASICs), printed circuits board (printed circuit board, PCB), electronic equipment, etc.

The above-mentioned communication apparatus 600 may further include an antenna 606, and each module included in the communication apparatus 600 is only for illustration, which is not limited in this application.

The apparatus 600 described in the above embodiments may be the first AP or the second AP, but the scope of the apparatus described in this application is not limited thereto, and the structure of the apparatus 600 may not be limited by FIG. 6 , and may include a hardware structure , a software module, which implements the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. A certain function of the above functions may be implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module.

The AP can be multi-antenna/multi-radio or single-antenna/single-radio, and the antenna/radio is used to send/receive data packets. In one implementation, the antenna or radio frequency part of the AP can be separated from the main body part of the AP in a structure of a remote layout. In one implementation, the STA may be a single antenna/radio frequency, or a multi-antenna/multi-radio frequency, and may be a device with more than two antennas, and the antennas/radio frequencies are used to transmit/receive data packets. In one implementation, the antenna or radio frequency part of the STA may be separated from the main part of the STA, in a structure of a remote layout.

The apparatus for transmitting the demand indication involved in this application may also be an independent device or may be a part of a larger device. For example, the implementation form of the device can be:

(1) Independent integrated circuit IC, or chip, or, chip system or subsystem; (2) A set of one or more ICs, optionally, the IC set may also include storage for storing data and instructions components; (3) modules that can be embedded in other devices; (4) receivers, smart terminals, wireless devices, handsets, mobile units, in-vehicle devices, cloud devices, artificial intelligence devices, etc.; (5) others, etc. .

For the case where the implementation form of the device is a chip or a chip system, reference may be made to the schematic structural diagram of the chip shown in FIG. 7 . The chip shown in FIG. 7 includes a processor 701 and an interface 702 . The number of processors 701 may be one or more, and the number of interfaces 702 may be multiple. The interface 702 is used for signal reception and transmission. Optionally, the chip or chip system may include memory 703 . The memory 703 is used to store necessary program instructions and data of the chip or the chip system. The chip system provided by the embodiments of the present application may be used to support the communication device to implement the functions involved in the access point in the above method embodiments, for example, to determine or process at least one of the data and information involved in the above method.

The examples of this application do not limit the protection scope and applicability of the claims. Those skilled in the art may make adaptive changes to the functions and deployment of the elements involved in the present application, or omit, substitute or add various processes or components as appropriate, without departing from the scope of the embodiments of the present application.

Embodiments of the present application further provide a computer-readable storage medium on which a computer program is stored, and when the computer-readable storage medium is executed by a computer, implements the functions of the foregoing method embodiments.

Embodiments of the present application further provide a computer program product, which implements the functions of the foregoing method embodiments when the computer program product is executed by a computer.

Embodiments of the present application further provide a communication system, which includes the aforementioned first AP and second AP.

It should also be understood that the first, second, third, fourth and various numeral numbers mentioned herein are only for the convenience of description, and are not used to limit the scope of the present application.

It should be understood that the term "and/or" in this document is only an association relationship to describe associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, and A and B exist simultaneously , there are three cases of B alone. In addition, the character "/" in this text generally indicates that the related objects are an "or" relationship.

It should be understood that, in various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims (27)

1. A method for transmitting demand indication, comprising:

   The first access point AP generates a radio frame, the radio frame includes transmission demand indication information, and the transmission demand indication information is used to indicate that the first AP needs to share transmission resources;

   The first AP sends the radio frame.
2. The method according to claim 1, wherein the transmission requirement indication information comprises first indication information, and the first indication information is used to indicate that the first AP has a transmission requirement.
3. The method according to claim 2, wherein the first indication information is carried in a physical layer header of the radio frame.
4. The method according to claim 3, wherein the first indication information is carried in the universal signal U-SIG field of the physical layer frame header of the radio frame or the extremely high value of the physical layer frame header of the radio frame. throughput signal in the EHT-SIG field.
5. The method according to any one of claims 1 to 4, wherein the transmission requirement indication information comprises second indication information, and the second indication information is used to indicate the transmission duration required by the first AP .
6. The method according to claim 5, wherein the second indication information is carried in a physical layer frame header of the radio frame or a medium access control protocol data unit (MPDU) of the radio frame.
7. The method according to any one of claims 1 to 6, wherein the transmission requirement indication information comprises third indication information, and the third indication information is used to indicate the transmission bandwidth required by the first AP .
8. The method according to claim 7, wherein the third indication information is carried in a physical layer frame header of the radio frame or a medium access control protocol data unit (MPDU) of the radio frame.
9. The method according to any one of claims 1 to 8, wherein the transmission requirement indication information includes fourth indication information, and the fourth indication information is used to indicate at least one of the following:

   The duration of the transmission request of the first AP, the direction of the transmission request of the first AP, the type of data to be transmitted in the transmission request of the first AP, the cooperation mode required by the first AP, the The transmission power required by the first AP, the transmission channel required by the first AP, and the identifier of the second AP, where the second AP is a shared AP.
10. The method according to claim 9, wherein the fourth indication information is carried in a medium access control protocol data unit (MPDU) of the radio frame.
11. The method according to any one of claims 1 to 10, wherein the method further comprises:

    The first AP receives a request frame, where the request frame is used to request the first AP to send the radio frame.
12. A method for transmitting demand indication, comprising:

    The second access point AP receives a radio frame from the first AP, where the radio frame includes transmission demand indication information, where the transmission demand indication information is used to indicate that the first AP needs to share transmission resources;

    The second AP determines a first transmission resource according to the transmission demand indication information, where the first transmission resource is a transmission resource that needs to be shared by the first AP.
13. The method according to claim 12, wherein the transmission requirement indication information comprises first indication information, and the first indication information is used to indicate that the first AP has a transmission requirement.
14. The method of claim 13, wherein the method further comprises:

    The second AP parses the first indication information from the physical frame header of the radio frame.
15. The method according to claim 14, wherein the second AP parses the first indication information from a physical frame header of the radio frame, comprising:

    The second AP parses the first indication information from the universal signal U-SIG field of the physical frame header of the radio frame or the extremely high throughput signal EHT-SIG field of the physical layer frame header of the radio frame.
16. The method according to any one of claims 12 to 15, wherein the transmission requirement indication information comprises second indication information, and the second indication information is used to indicate the transmission duration required by the first AP .
17. The method according to claim 16, wherein the second AP determines the first transmission resource according to the transmission demand indication information, comprising:

    The second AP determines the first transmission resource according to the transmission duration and the preset bandwidth value.
18. The method according to claim 16 or 17, wherein the method further comprises:

    The second AP parses the second indication information from the physical layer header of the wireless frame or the medium access control protocol data unit MPDU of the wireless frame.
19. The method according to any one of claims 12 to 18, wherein the transmission requirement indication information comprises third indication information, and the third indication information is used to indicate the transmission bandwidth required by the first AP .
20. The method according to claim 19, wherein the second AP determines the first transmission resource according to the transmission demand indication information, comprising:

    The second AP determines the first transmission resource according to the transmission bandwidth and the preset duration value.
21. The method according to claim 19 or 20, wherein the method further comprises:

    The second AP parses the third indication information from the physical layer frame header of the wireless frame or the medium access control protocol data unit MPDU of the wireless frame.
22. The method according to any one of claims 12 to 21, wherein the transmission requirement indication information comprises fourth indication information, and the fourth indication information is used to indicate at least one of the following:

    The duration of the transmission request of the first AP, the direction of the transmission request of the first AP, the type of data to be transmitted in the transmission request of the first AP, the cooperation mode required by the first AP, the The transmission power required by the first AP, the transmission channel required by the first AP, and the identifier of the second AP.
23. The method of claim 22, wherein the method further comprises:

    The second AP parses the fourth indication information from the medium access control protocol data unit MPDU of the radio frame.
24. The method according to any one of claims 12 to 23, wherein the method further comprises:

    The second AP sends a request frame to the first AP, where the request frame is used to request the first AP to send the radio frame.
25. An apparatus for transmitting a demand indication, comprising: a unit for implementing the method according to any one of claims 1 to 24.
26. A chip, characterized in that it includes: a processor and a memory, the memory is used to store programs or instructions, and when the programs or instructions are executed by the processor, the chip is made to perform as claimed in claims 1 to 24 The method of any of the above.
27. A computer-readable storage medium on which a computer program or instruction is stored, characterized in that, when the computer program or instruction is executed, the computer executes the method according to any one of claims 1 to 24.

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