A method for determining the spatial reuse parameter field within a PPDU, a communication device, a computer-readable storage medium, and a computer program.

Abstract

This device provides a response and communication device that determines the Uplink Space Reuse Parameter (UL SRP) field within a PPDU (Physical Protocol Data Unit) of a wireless local area network supporting the IEEE 802.11be standard. [Solution] The method involves an access point (AP) sending a trigger frame that triggers the transmission of an EHT TB (ultra-high throughput trigger-based) PPDU. The common information field of the trigger frame includes four UL SRP fields, which represent the sum of the AP's transmission power and the maximum interference power received by the AP. The values ​​indicated by the SRP1 and SRP2 fields in the U-SIG (universal signaling field) of the EHT TB PPDU are determined based on the values ​​indicated by the four UL SRP fields.

Description

Technical Field

[0001] This application was filed with the China National Intellectual Property Administration on November 12, 2020, and claims priority to Chinese Patent Application No. 202011263310.4, titled "Method for Determining a Spatial Reuse Parameter Field in a PPDU and Related Apparatus". The entire disclosure of the Chinese patent application is incorporated herein by reference in its entirety.

[0002] This application relates to the field of wireless communication technologies, and in particular, to a method for determining a spatial reuse parameter field in a physical layer protocol data unit (PPDU) and related apparatus.

Background Art

[0003] Wireless local area networks (WLANs) have been developed for many generations, including 802.11a / b / g, 802.11n, 802.11ac, 802.11ax, and the under consideration 802.11be. The 802.11ax standard is sometimes referred to as the high efficiency (HE) standard, and the 802.11be standard is sometimes referred to as the extremely high throughput (EHT) standard or the Wi-Fi (registered trademark) 7 standard. Different from 802.11ax, 802.11be uses an ultra-high bandwidth, such as 320 MHz, to achieve an ultra-high transmission rate and support scenarios with an ultra-high user density. Hereinafter, a station that supports the 802.11ax standard but does not support the 802.11be standard is abbreviated as an HE station, and a station that supports the 802.11be standard is abbreviated as an EHT station.

[0004] 802.11ax WLAN devices (such as access points (APs) and stations (STAs)) support only half-duplex transmission. In other words, on the same spectral bandwidth or channel, only one device can transmit information; another device can only receive signals to avoid interference with the current transmitting device, but cannot transmit signals. However, with increasing density of WLAN devices, it is becoming more common for basic service sets (BSSs) to overlap with other BSSs. In other words, overlapping BSSs (OBSSs) are becoming more common. Since a WLAN device located within an OBSS can receive physical protocol data units (PPDUs, also called packets or data packets) from two BSSs, traditional methods result in low transmission efficiency. Therefore, 802.11ax proposes a spatial reuse method. By adaptively adjusting the transmission power, WLAN devices within overlapping BSSs can perform transmissions simultaneously. This significantly improves transmission efficiency. Specifically, in 802.11ax, space reuse is introduced into the trigger-based uplink scheduling transmission method.When transmitting a high-efficiency trigger-based physical layer protocol data unit (HE TB PPDU), the station copies one by one the values ​​of the four uplink spatial reuse parameter (UL SRP) fields (also known as uplink parameterized spatial reuse (UL PSR)) fields within the uplink spatial reuse (UL spatial reuse) field in the common information field of the received trigger frame to the four spatial reuse parameter (SRP) fields contained within the high-efficiency signal field A (HE-SIG-A) of the HE TB PPDU.

[0005] The 802.11be standard still uses the trigger-based uplink scheduling transmission method found in the 802.11ax standard. However, the structure of the HE TB PPDU differs from that of the extremely high throughput trigger-based physical layer protocol data unit (EHT TB PPDU). Specifically, the Universal SIG (U-SIG) of the EHT TB PPDU contains a maximum of two SRP fields due to space limitations. Therefore, how to configure the space reuse parameter field within the EHT TB PPDU in scenarios where EHT stations are scheduled using trigger frames, or where HE and EHT stations are scheduled simultaneously, has become an urgent issue to address. [Overview of the project]

[0006] Embodiments of the present invention provide a method for determining a spatial reuse parameter field within a PPDU, and related apparatus, so that, in a scenario in which an EHT station is scheduled using a trigger frame, or in which HE stations and EHT stations are scheduled simultaneously, the frame structure of the EHT TB PPDU does not need to be changed, and the spatial reuse parameter field of the EHT TB PPDU may be set based on four UL SRP fields within the trigger frame.

[0007] The present invention will be described below in terms of different embodiments. Please understand that the following implementations and beneficial effects of these different embodiments may be referenced to one another.

[0008] According to a first aspect, the present invention provides a method for determining a spatial reuse parameter field in a PPDU. The method includes the steps of: an AP transmitting a trigger frame, which is used to trigger a station to transmit an EHT TB PPDU; and the AP receiving an EHT TB PPDU transmitted by the station. The common information field of the trigger frame includes four UL SRP fields, which represent the sum of the AP's transmission power and the maximum interference power received by the AP. The U-SIG of the EHT TB PPDU includes only two SRP fields, the SRP1 field and the SRP2 field. The SRP1 and SRP2 fields each represent an SRP value on a different subchannel, where the SRP value is equal to the sum of the AP's transmission power and the maximum interference power received by the AP on the corresponding subchannel. The values ​​indicated by the SRP1 and SRP2 fields in the U-SIG are each determined based on the values ​​indicated by the four UL SRP fields in the common information field of the trigger frame.

[0009] Optionally, the trigger frame is further used to trigger a station to transmit an HE TB PPDU. The values ​​of the four SRP fields contained within the HE-SIG-A of the HE TB PPDU are each copied from the four UL SRP fields mentioned above. Each UL SRP field has a length of 4 bits, and each SRP field within the HE-SIG-A also has a length of 4 bits.

[0010] In one embodiment of this solution, the contents of the trigger frame are not changed (i.e., the UL SRP values ​​in the trigger frame are not changed), and as a result, the HE station can set the space reuse parameter in the original manner, and the HE station experiences no loss of granularity. In another embodiment, the frame structure of the U-SIG is not changed (e.g., the length of one byte is maintained), and the space reuse parameter in the U-SIG of the EHT TB PPDU is set based on the four UL SRP fields in the trigger frame, and as a result, the EHT station may be scheduled to transmit an uplink EHT TB PPDU using the trigger frame, and the HE station and the EHT station may be scheduled using the same trigger frame.

[0011] According to a second aspect, the present invention provides a method for determining a spatial reuse parameter field in a PPDU. The method includes the steps of: an STA receiving a trigger frame from an AP, the trigger frame being used to trigger the STA to transmit an EHT TB PPDU; and the STA transmitting an EHT TB PPDU. The common information field of the trigger frame includes four UL SRP fields, which represent the sum of the AP's transmission power and the maximum interference power received by the AP. The U-SIG of the EHT TB PPDU includes only two SRP fields, the SRP1 field and the SRP2 field. The SRP1 and SRP2 fields each represent an SRP value on a different subchannel, where the SRP value is equal to the sum of the AP's transmission power and the maximum interference power received by the AP on the corresponding subchannel. The values ​​indicated by the SRP1 and SRP2 fields in the U-SIG are each determined based on the values ​​indicated by the four UL SRP fields in the common information field of the trigger frame.

[0012] Optionally, the trigger frame is further used to trigger a station to transmit an HE TB PPDU. The values ​​of the four SRP fields contained within the HE-SIG-A of the HE TB PPDU are each copied from the four UL SRP fields mentioned above. Each UL SRP field has a length of 4 bits, and each SRP field within the HE-SIG-A also has a length of 4 bits.

[0013] Optionally, prior to the stage where the STA transmits the EHT TB PPDU, the method further includes a step in which the STA sets the SRP1 and SRP2 fields contained within the U-SIG of the EHT TB PPDU based on the values ​​indicated by the four UL SRP fields in the common information field of the trigger frame. The length of each SRP field in the U-SIG is 4 bits.

[0014] According to a third aspect, the present invention provides a communication device. The communication device may be an AP, or a chip within an AP, for example, a Wi-Fi chip. The communication device includes a processing unit configured to generate a trigger frame, which is used to trigger a station to transmit an EHT TB PPDU; and a transceiver unit configured to transmit the trigger frame. The transceiver unit is further configured to receive the EHT TB PPDU transmitted by the station. The values ​​indicated by the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU are determined based on the values ​​indicated by one or more UL SRP fields in the common information field of the trigger frame.

[0015] Optionally, the trigger frame is further used to trigger a station to transmit an HE TB PPDU. The values ​​of the four SRP fields contained within the HE-SIG-A of the HE TB PPDU are each copied from the four UL SRP fields mentioned above. Each UL SRP field has a length of 4 bits, and each SRP field within the HE-SIG-A also has a length of 4 bits.

[0016] According to a fourth aspect, the present invention provides a communication device. The communication device may be an STA, or a chip within the STA, for example, a Wi-Fi chip. The communication device includes a transceiver unit configured to receive a trigger frame, which is used to trigger the STA to transmit an EHT TB PPDU; and a processing unit configured to generate an EHT TB PPDU, where the values ​​indicated by the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU are each determined based on the values ​​indicated by one or more UL SRP fields in the common information field of the trigger frame. The transceiver unit is further configured to transmit the EHT TB PPDU.

[0017] Optionally, the processing unit is further configured so that the STA sets the SRP1 and SRP2 fields included in the U-SIG of the EHT TB PPDU based on the values ​​indicated by the four UL SRP fields in the common information field of the trigger frame. Each SRP field in the U-SIG has a length of 4 bits.

[0018] Optionally, the trigger frame is further used to trigger a station to transmit an HE TB PPDU. The values ​​of the four SRP fields contained within the HE-SIG-A of the HE TB PPDU are each copied from the four UL SRP fields mentioned above. Each UL SRP field has a length of 4 bits, and each SRP field within the HE-SIG-A also has a length of 4 bits.

[0019] In one implementation of any of the embodiments described above, the four UL SRP fields are the UL SRP1 field, the UL SRP2 field, the UL SRP3 field, and the UL SRP4 field. When the bandwidth of the EHT TB PPDU is 20 MHz, the values ​​indicated by the four UL SRP fields are the same, and both the value indicated by the SRP1 field and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU are equal to the value indicated by any one of the four UL SRP fields.

[0020] In one implementation of any of the embodiments described above, the four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field. When the bandwidth of the EHT TB PPDU is 40 MHz, the UL SRP1 field and UL SRP3 field each represent the SRP value of the first 20 MHz subchannel on the 40 MHz channel in ascending order of frequency, and the values ​​represented by the UL SRP1 field and UL SRP3 field are the same; and the UL SRP2 field and UL SRP4 field each represent the SRP value of the second 20 MHz subchannel on the 40 MHz channel in ascending order of frequency, and the values ​​represented by the UL SRP2 field and UL SRP4 field are the same. The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP1 field or the UL SRP3 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP2 field or the UL SRP4 field.

[0021] In one implementation of any of the embodiments described above, the four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field. When the bandwidth of the EHT TB PPDU is 80 MHz, each of the four UL SRP fields represents the SRP value of four 20 MHz subchannels on an 80 MHz channel in ascending order of frequency. When the bandwidth of the EHT TB PPDU is 160 MHz, each of the four UL SRP fields represents the SRP value of four 40 MHz subchannels on a 160 MHz channel in ascending order of frequency. The value represented by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the minimum value among the values ​​represented by the UL SRP1 and UL SRP2 fields, and the value represented by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the minimum value among the values ​​represented by the UL SRP3 and UL SRP4 fields.

[0022] In one implementation of any of the aforementioned embodiments, the four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field. When the bandwidth of the EHT TB PPDU is 320 MHz, each of the four UL SRP fields represents the SRP values ​​of four 40 MHz subchannels on the primary 160 MHz channel in ascending order of frequency, and each of the SRP values ​​of four 40 MHz subchannels on the secondary 160 MHz channel is the same as the SRP values ​​of four 40 MHz subchannels on the primary 160 MHz channel. In other words, the SRP values ​​on the secondary 160 MHz channel are implicitly represented. The value represented by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the minimum value among the values ​​represented by the UL SRP1 and UL SRP2 fields, and the value represented by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the minimum value among the values ​​represented by the UL SRP3 and UL SRP4 fields.

[0023] Optionally, if the bandwidth of the EHT TB PPDU is 80 MHz, 160 MHz, or 320 MHz, the value indicated by the SRP1 field in the U-SIG is equal to the maximum value among the values ​​indicated by the UL SRP1 and UL SRP2 fields, and the value indicated by the SRP2 field in the U-SIG is equal to the maximum value among the values ​​indicated by the UL SRP3 and UL SRP4 fields. Alternatively, if the bandwidth of the EHT TB PPDU is 80 MHz, 160 MHz, or 320 MHz, the value indicated by the SRP1 field in the U-SIG is equal to the average value among the values ​​indicated by the UL SRP1 and UL SRP2 fields, and the value indicated by the SRP2 field in the U-SIG is equal to the average value among the values ​​indicated by the UL SRP3 and UL SRP4 fields.

[0024] In this solution, for 80MHz, 160MHz, and 320MHz bandwidths, the smaller value (or minimum value) among the values ​​indicated by UL SRP1 and UL SRP2 is assigned to the SRP1 field in the U-SIG, and the smaller value (or minimum value) among the values ​​indicated by UL SRP3 and UL SRP4 is assigned to the SRP2 field in the U-SIG. This ensures that the transmission power of devices located within the same OBSS as the AP does not interfere with AP transmissions on some 20MHz subchannels, and that the problem of insufficient SRP fields in the U-SIG can also be resolved.

[0025] According to a fifth aspect, the present application provides a method for determining a spatial reuse parameter field in a PPDU. The method includes the steps of: an AP transmitting a trigger frame, where the trigger frame is used to trigger a station to transmit an EHT TB PPDU; and the AP receiving an EHT TB PPDU transmitted by the station. The common information field of the trigger frame includes four uplink spatial reuse parameter (UL SRP) fields. Two of the four UL SRP fields indicate the same value, and the other two indicate the same value. The U-SIG of the EHT TB PPDU includes only two SRP fields, namely the SRP1 field and the SRP2 field. The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the two UL SRP fields that indicate the same value, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the other two UL SRP fields that indicate the same value.

[0026] Optionally, the trigger frame is further used to trigger the station to transmit a HE TB PPDU. The values of the four SRP fields included in the HE-SIG-A of the HE TB PPDU are each copied from the aforementioned four UL SRP fields. The length of each UL SRP field is 4 bits, and the length of each SRP field in the HE-SIG-A is also 4 bits.

[0027] In this solution, the UL SRP value in the trigger frame is changed to conform to the SRP field of the U-SIG (i.e., the content of the trigger frame is changed), so that the trigger frame can schedule the EHT station to transmit an uplink EHT TB PPDU, and the HE station and the EHT station can also be scheduled by using the same trigger frame.

[0028] According to a sixth aspect, the present application provides a method for determining a spatial reuse parameter field in a PPDU. The method includes the steps of: a STA receiving a trigger frame from an AP, where the trigger frame is used to trigger the station to transmit an EHT TB PPDU; and the STA transmitting an EHT TB PPDU. The common information field of the trigger frame includes four uplink spatial reuse parameter (UL SRP) fields. Two of the four UL SRP fields indicate the same value, and the other two indicate the same value. The U-SIG of the EHT TB PPDU includes only two SRP fields, namely an SRP1 field and an SRP2 field. The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by any one of the two UL SRP fields that indicate the same value, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by any one of the other two UL SRP fields that indicate the same value.

[0029] Optionally, the trigger frame is further used to trigger the station to transmit a HE TB PPDU. The values of the four SRP fields included in the HE-SIG-A of the HE TB PPDU are each copied from the aforementioned four UL SRP fields. The length of each UL SRP field is 4 bits, and the length of each SRP field in the HE-SIG-A is also 4 bits.

[0030] Optionally, before the step of the STA transmitting the EHT TB PPDU, the method further includes the step of the STA setting the value indicated by the SRP1 field included in the U-SIG of the EHT TB PPDU to the value indicated by any one of the two UL SRP fields that indicate the same value, and setting the value indicated by the SRP2 field in the U-SIG to the value indicated by any one of the other two UL SRP fields that indicate the same value. The length of each SRP field in the U-SIG is 4 bits.

[0031] According to a seventh aspect, the present invention provides a communication device. The communication device may be an AP, or a chip within an AP, for example, a Wi-Fi chip. The communication device includes a processing unit configured to generate a trigger frame, where the trigger frame is used to trigger a station to transmit an EHT TB PPDU, the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, two of the four UL SRP fields having the same value and the other two having the same value; and a transceiver unit configured to transmit the trigger frame. The transceiver unit is further configured to receive an EHT TB PPDU transmitted by the station, where the value of the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the two UL SRP fields having the same value, and the value of the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the other two UL SRP fields having the same value.

[0032] Optionally, the trigger frame is further used to trigger a station to transmit an HE TB PPDU. The values ​​of the four SRP fields contained within the HE-SIG-A of the HE TB PPDU are each copied from the four UL SRP fields mentioned above. Each UL SRP field has a length of 4 bits, and each SRP field within the HE-SIG-A also has a length of 4 bits.

[0033] According to the eighth aspect, the present invention provides a communication device. The communication device may be an STA, or a chip within an STA, for example, a Wi-Fi chip. The communication device includes a transceiver unit configured to receive a trigger frame, the trigger frame being used to trigger a station to transmit an EHT TB PPDU, the common information field of the trigger frame including four uplink space reuse parameter UL SRP fields, two of the four UL SRP fields having the same value and the other two having the same value; and a processing unit configured to generate an EHT TB PPDU, where the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the two UL SRP fields having the same value, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the other two UL SRP fields having the same value. The transceiver unit is further configured to transmit an EHT TB PPDU.

[0034] Optionally, the trigger frame is further used to trigger a station to transmit an HE TB PPDU. The values ​​of the four SRP fields contained within the HE-SIG-A of the HE TB PPDU are each copied from the four UL SRP fields mentioned above. Each UL SRP field has a length of 4 bits, and each SRP field within the HE-SIG-A also has a length of 4 bits.

[0035] Optionally, the processing unit is configured to set the value indicated by the SRP1 field contained within the U-SIG of the EHT TB PPDU to the value indicated by one of two UL SRP fields that show the same value, and to set the value indicated by the SRP2 field within the U-SIG of the EHT TB PPDU to the value indicated by one of the other two UL SRP fields that show the same value. Each SRP field within the U-SIG has a length of 4 bits.

[0036] In one implementation of any of the aforementioned embodiments, the four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field. The values ​​indicated by UL SRP1 field and UL SRP2 field are the same, and the values ​​indicated by UL SRP3 field and UL SRP4 field are the same.

[0037] Optionally, if the EHT TB PPDU bandwidth is 80 MHz, each of the four UL SRP fields represents the SRP values ​​of four 20 MHz subchannels on an 80 MHz channel in ascending order of frequency. If the EHT TB PPDU bandwidth is 160 MHz, each of the four UL SRP fields represents the SRP values ​​of four 40 MHz subchannels on a 160 MHz channel in ascending order of frequency. If the EHT TB PPDU bandwidth is 320 MHz, each of the four UL SRP fields represents the SRP values ​​of four 40 MHz subchannels on a primary 160 MHz channel in ascending order of frequency, and the SRP values ​​of the four 40 MHz subchannels on a secondary 160 MHz channel are the same as the SRP values ​​of the four 40 MHz subchannels on the primary 160 MHz channel. In other words, the SRP values ​​on the secondary 160 MHz channel are implicitly shown.

[0038] According to a ninth aspect, the present invention provides a method for determining a spatial reuse parameter field in a PPDU. The method includes the steps of: an AP transmitting a trigger frame, which is used to trigger a station to transmit an EHT TB PPDU; and the AP receiving an EHT TB PPDU transmitted by the station. The trigger frame holds first indication information, which indicates the value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU. The value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU is determined based on the first indication information.

[0039] Optionally, the first indication information is located within the user information field of the trigger frame, and the value of the AID12 field in the user information field is a preset value, which is one of either 2008 to 2044 or 2046 to 4095.

[0040] Optionally, the common information field of the first indication information further includes four UL SRP fields, each of which represents the value of one of the four SRP fields within the HE TB PPDU.

[0041] Optionally, the trigger frame is further used to trigger a station to transmit an HE TB PPDU. The values ​​of the four SRP fields contained within the HE-SIG-A of the HE TB PPDU are each copied from the four UL SRP fields mentioned above. Each UL SRP field has a length of 4 bits, and each SRP field within the HE-SIG-A also has a length of 4 bits.

[0042] In this solution, a special user information field within the trigger frame independently indicates the spatial reuse parameter of the EHT TB PPDU. The meaning of the special user information field is clear, and the scheduling of the HE station is not affected. Thus, HE stations and EHT stations can be scheduled using the same trigger frame.

[0043] According to a tenth aspect, the present invention provides a method for determining a spatial reuse parameter field in a PPDU. The method includes the steps of: the STA receiving a trigger frame, which is used to trigger the station to transmit an EHT TB PPDU; and the STA transmitting an EHT TB PPDU. The trigger frame holds first indication information, which indicates the value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU. The value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU is determined based on the first indication information.

[0044] Optionally, the first indication information is located within the user information field of the trigger frame, and the value of the AID12 field in the user information field is a preset value, which is one of either 2008 to 2044 or 2046 to 4095.

[0045] Optionally, the common information field of the first indication information further includes four UL SRP fields, each of which represents the value of one of the four SRP fields within the HE TB PPDU.

[0046] Optionally, the trigger frame is further used to trigger a station to transmit an HE TB PPDU. The values ​​of the four SRP fields contained within the HE-SIG-A of the HE TB PPDU are each copied from the four UL SRP fields mentioned above. Each UL SRP field has a length of 4 bits, and each SRP field within the HE-SIG-A also has a length of 4 bits.

[0047] According to an eleventh aspect, the present invention provides a communication device. The communication device may be an AP, or a chip within an AP, for example, a Wi-Fi chip. The communication device includes a processing unit configured to generate a trigger frame, where the trigger frame is used to trigger a station to transmit an EHT TB PPDU, the trigger frame holds first indication information, the first indication information indicates the value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU; and a transceiver unit configured to transmit the trigger frame. The transceiver unit is further configured to receive the EHT TB PPDU transmitted by the station, the value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU is determined based on the first indication information.

[0048] Optionally, the first indication information is located within the user information field of the trigger frame, and the value of the AID12 field in the user information field is a preset value, which is one of either 2008 to 2044 or 2046 to 4095.

[0049] Optionally, the common information field of the first indication information further includes four UL SRP fields, each of which represents the value of one of the four SRP fields within the HE TB PPDU.

[0050] Optionally, the trigger frame is further used to trigger a station to transmit an HE TB PPDU. The values ​​of the four SRP fields contained within the HE-SIG-A of the HE TB PPDU are each copied from the four UL SRP fields mentioned above. Each UL SRP field has a length of 4 bits, and each SRP field within the HE-SIG-A also has a length of 4 bits.

[0051] According to a twelfth aspect, the present invention provides a communication device. The communication device may be an STA, or a chip within an STA, for example, a Wi-Fi chip. The communication device includes a transceiver unit configured to receive a trigger frame, the trigger frame being used to trigger a station to transmit an EHT TB PPDU, the trigger frame holding first indication information, the first indication information indicating the value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU; and a processing unit configured to generate an EHT TB PPDU, where the value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU is determined based on the first indication information. The transceiver unit is further configured to transmit the EHT TB PPDU.

[0052] Optionally, the processing unit is further configured to set the values ​​of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU based on the indication of the first indication information.

[0053] Optionally, the first indication information is located within the user information field of the trigger frame, and the value of the AID12 field in the user information field is a preset value, which is one of either 2008 to 2044 or 2046 to 4095.

[0054] Optionally, the common information field of the first indication information further includes four UL SRP fields, each of which represents the value of one of the four SRP fields within the HE TB PPDU.

[0055] Optionally, the trigger frame is further used to trigger a station to transmit an HE TB PPDU. The values ​​of the four SRP fields contained within the HE-SIG-A of the HE TB PPDU are each copied from the four UL SRP fields mentioned above. Each UL SRP field has a length of 4 bits, and each SRP field within the HE-SIG-A also has a length of 4 bits.

[0056] In one implementation of any of the aforementioned embodiments, the bandwidth of the EHT TB PPDU is 320 MHz.

[0057] In one implementation of any of the embodiments described above, if the first indication information indicates the values ​​of the SRP1 field and the SRP2 field in the U-SIG of the EHT TB PPDU, then the values ​​of the SRP1 field and the SRP2 field in the U-SIG of the EHT TB PPDU are also set to the values ​​indicated by the first indication information.

[0058] In one implementation of any of the embodiments described above, if the first indication information indicates the value of the SRP2 field in the U-SIG of the EHT TB PPDU, the value of the SRP2 field in the U-SIG of the EHT TB PPDU is set to the value indicated by the first indication information. The value of the SRP1 field in the U-SIG of the EHT TB PPDU may be set to the minimum (or maximum or average) value of the four UL SRP fields included in the common information field of the trigger frame. Each of the four UL SRP fields indicates the SRP value of four 40 MHz subchannels on the primary 160 MHz channel in ascending order of frequency.

[0059] If the first indication information optionally indicates the value of the SRP2 field in the U-SIG of the EHT TB PPDU, the first indication information may alternatively reside in a reserved bit in the common information field of the trigger frame. It should be understood that the reserved bit is different from the UL SRP field in the common information field of the trigger frame.

[0060] In this solution, the SRP1 field in the U-SIG is determined based on the four UL SRP fields in the trigger frame, and the SRP2 field in the U-SIG is determined based on the newly added field / information in the trigger frame. This can explicitly indicate the SRP value on the secondary 160MHz channel. The indication is more flexible, and the SRP value on the secondary 160MHz channel does not need to be the same as the SRP value on the primary 160MHz channel.

[0061] According to a thirteenth aspect, the present invention provides a method for determining a spatial reuse parameter field in a PPDU. The method includes the steps of: an AP transmitting a trigger frame, the trigger frame holding second indication information, the second indication information indicating that the trigger frame is used to schedule a station to transmit only EHT TB PPDUs; and the AP receiving an EHT TB PPDU transmitted by the station. The common information field of the trigger frame includes a first UL SRP field and a second UL SRP field, the first UL SRP field indicating the SRP value of a first bandwidth in the bandwidth of the EHT TB PPDU, and the second UL SRP field indicating the SRP value of a second bandwidth in the bandwidth of the EHT TB PPDU, where both the first and second bandwidths are half the bandwidth of the EHT TB PPDU, and the frequency of the first bandwidth is lower than the frequency of the second bandwidth. In other words, the first UL SRP field indicates the SRP value of the bandwidth with a lower frequency in the bandwidth of the EHT TB PPDU, and the second UL SRP field indicates the SRP value of the bandwidth with a higher frequency in the bandwidth of the EHT TB PPDU. For example, if the bandwidth of the EHT TB PPDU is 80 MHz, the first UL SRP field indicates the lower 40 MHz bandwidth in the 80 MHz bandwidth, and the second UL SRP field indicates the higher 40 MHz bandwidth in the 80 MHz bandwidth. The bandwidth of the EHT TB PPDU is one of 40 MHz, 80 MHz, 160 MHz, and 320 MHz.

[0062] Therefore, the value indicated in the SRP1 field within the U-SIG of the EHT TB PPDU received by the AP is equal to the value indicated by the first UL SRP field, and the value indicated by the SRP2 field within the U-SIG is equal to the value indicated by the second UL SRP field.

[0063] Optionally, the first UL SRP field and the second UL SRP field may be any one of the UL SRP1 field, UL SRP2 field, UL SRP3 field, or UL SRP4 field, and the first UL SRP field may be different from the second UL SRP field. For example, the first UL SRP field may be the UL SRP1 field, the second UL SRP field may be the UL SRP2 field, and the other UL SRP fields (i.e., the UL SRP3 field and the UL SRP4 field) may be reserved or used for other purposes.

[0064] The second indication information may optionally be 1 to 4 bits.

[0065] Optionally, if the bandwidth of the EHT TB PPDU is 20 MHz, the value of the first UL SRP field is the same as the value of the second UL SRP field, and both the first and second UL SRP fields indicate SRP values ​​for a 20 MHz bandwidth.

[0066] In this solution, if the trigger frame indicates that the EHT station is scheduled to transmit only EHT TB PPDU, then only two UL SRP fields in the trigger frame (the other two UL SRP fields are reserved) are used to indicate the SRP values ​​in the lower and higher half of the total bandwidth, respectively. The EHT station copies the values ​​of the two UL SRP fields in the trigger frame to the two SRP fields in the U-SIG. This resolves the issue of insufficient SRP fields in the U-SRP and reduces the indication overhead in the trigger frame.

[0067] According to a fourteenth aspect, the present invention provides a method for determining a spatial reuse parameter field in a PPDU. The method includes the steps of: a STA receiving a trigger frame, wherein the trigger frame holds second indication information, the second indication information indicating that the trigger frame is used to schedule the station to transmit only EHT TB PPDUs; and the STA transmitting an EHT TB PPDU. The common information field of the trigger frame includes a first UL SRP field and a second UL SRP field, wherein the first UL SRP field indicates the SRP value of a first bandwidth in the bandwidth of the EHT TB PPDU, and the second UL SRP field indicates the SRP value of a second bandwidth in the bandwidth of the EHT TB PPDU, where both the first and second bandwidths are half the bandwidth of the EHT TB PPDU, and the frequency of the first bandwidth is lower than the frequency of the second bandwidth. In other words, the first UL SRP field indicates the SRP value of the bandwidth with a lower frequency in the bandwidth of the EHT TB PPDU, and the second UL SRP field indicates the SRP value of the bandwidth with a higher frequency in the bandwidth of the EHT TB PPDU. For example, if the bandwidth of the EHT TB PPDU is 80 MHz, the first UL SRP field indicates the lower 40 MHz bandwidth in the 80 MHz bandwidth, and the second UL SRP field indicates the higher 40 MHz bandwidth in the 80 MHz bandwidth. The bandwidth of the EHT TB PPDU is one of 40 MHz, 80 MHz, 160 MHz, and 320 MHz.

[0068] Therefore, the value shown in the SRP1 field within the U-SIG of the EHT TB PPDU is equal to the value shown by the first UL SRP field, and the value shown by the SRP2 field within the U-SIG is equal to the value shown by the second UL SRP field.

[0069] Optionally, the first UL SRP field and the second UL SRP field may be any one of the UL SRP1 field, UL SRP2 field, UL SRP3 field, or UL SRP4 field, and the first UL SRP field may be different from the second UL SRP field. For example, the first UL SRP field may be the UL SRP1 field, the second UL SRP field may be the UL SRP2 field, and the other UL SRP fields (i.e., the UL SRP3 field and the UL SRP4 field) may be reserved or used for other purposes.

[0070] The second indication information may optionally be 1 to 4 bits.

[0071] Optionally, if the bandwidth of the EHT TB PPDU is 20 MHz, the value of the first UL SRP field is the same as the value of the second UL SRP field, and both the first and second UL SRP fields indicate SRP values ​​for a 20 MHz bandwidth.

[0072] According to a 15th aspect, the present invention provides a communication device. The communication device may be an AP, or a chip within an AP, for example, a Wi-Fi chip. The communication device includes a processing unit configured to generate a trigger frame, where the trigger frame holds a second indication information, the second indication information being used to schedule a station to transmit only EHT TB PPDUs; a common information field of the trigger frame includes a first UL SRP field and a second UL SRP field, where the first UL SRP field indicates the SRP value of a first bandwidth in the bandwidth of an EHT TB PPDU; the second UL SRP field indicates the SRP value of a second bandwidth in the bandwidth of an EHT TB PPDU; both the first and second bandwidths are half the bandwidth of an EHT TB PPDU, and the frequency of the first bandwidth is lower than the frequency of the second bandwidth; and a transceiver unit configured to transmit the trigger frame. The transceiver unit is further configured to receive EHT TB PPDUs transmitted by the station. The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the first UL SRP field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the second UL SRP field. The bandwidth of the EHT TB PPDU is one of 40 MHz, 80 MHz, 160 MHz, and 320 MHz.

[0073] Optionally, the first UL SRP field and the second UL SRP field may be any one of the UL SRP1 field, UL SRP2 field, UL SRP3 field, or UL SRP4 field, and the first UL SRP field may be different from the second UL SRP field. For example, the first UL SRP field may be the UL SRP1 field, the second UL SRP field may be the UL SRP2 field, and the other UL SRP fields (i.e., the UL SRP3 field and the UL SRP4 field) may be reserved or used for other purposes.

[0074] The second indication information may optionally be 1 to 4 bits.

[0075] Optionally, if the bandwidth of the EHT TB PPDU is 20 MHz, the value of the first UL SRP field is the same as the value of the second UL SRP field, and both the first and second UL SRP fields indicate SRP values ​​for a 20 MHz bandwidth.

[0076] According to a sixteenth aspect, the present invention provides a communication device. The communication device may be an STA, or a chip within an STA, for example, a Wi-Fi chip. The communication device includes a transceiver unit configured to receive a trigger frame, where the trigger frame holds second indication information, the second indication information is used to schedule a station to transmit only EHT TB PPDUs, the common information field of the trigger frame includes a first UL SRP field and a second UL SRP field, where the first UL SRP field indicates the SRP value of the first bandwidth in the bandwidth of the EHT TB PPDU, the second UL SRP field indicates the SRP value of the second bandwidth in the bandwidth of the EHT TB PPDU, both of which are half the bandwidth of the EHT TB PPDU, and the frequency of the first bandwidth is lower than the frequency of the second bandwidth; and a processing unit configured to generate an EHT TB PPDU. The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the first UL SRP field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the second UL SRP field. The transceiver unit is further configured to transmit the EHT TB PPDU.

[0077] Optionally, the processing unit is further configured to set the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU to the value indicated by the first UL SRP field, and to set the value indicated by the SRP2 field in the U-SIG to the value indicated by the second UL SRP field.

[0078] Optionally, the first UL SRP field and the second UL SRP field may be any one of the UL SRP1 field, UL SRP2 field, UL SRP3 field, or UL SRP4 field, and the first UL SRP field may be different from the second UL SRP field. For example, the first UL SRP field may be the UL SRP1 field, the second UL SRP field may be the UL SRP2 field, and the other UL SRP fields (i.e., the UL SRP3 field and the UL SRP4 field) may be reserved or used for other purposes.

[0079] The second indication information may optionally be 1 to 4 bits.

[0080] Optionally, if the bandwidth of the EHT TB PPDU is 20 MHz, the value of the first UL SRP field is the same as the value of the second UL SRP field, and both the first and second UL SRP fields indicate SRP values ​​for a 20 MHz bandwidth.

[0081] According to the 17th aspect, the present invention provides a space reuse method. The method includes the steps of: a communication device determining the transmission power of a PPDU based on the values ​​indicated by the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU, and / or the values ​​indicated by the four UL SRP fields included in the common information field of the trigger frame; and the communication device transmitting the PPDU based on the transmission power of the PPDU.

[0082] The communication device may be an AP or an STA. If the communication device is an AP, the PPDU is a parameterized spatial reuse reception (PSRR) PPDU. If the communication device is an STA, the PPDU is a response frame in response to the PSRR PPDU.

[0083] Optionally, prior to the step in which the communication device determines the transmission power of the PPDU, the method further includes the step in which the communication device receives a trigger frame, where the trigger frame includes four UL SRP fields, the value indicated by one of the UL SRP fields being the sum of the transmission power of the first AP on the subchannel and the maximum interference power received by the first AP. The communication device and the first AP are located within the same overlapping basic service set OBSS. In this specification, “first AP” is the AP that transmits the trigger frame and is also the AP in the aforementioned method that determines the space reuse parameter fields in the PPDU. The communication device and the first AP are not the same device.

[0084] Optionally, prior to the step in which the communication device determines the transmission power of the PPDU, the method further includes the step in which the communication device receives an EHT TB PPDU, where the U-SIG of the EHT TB PPDU includes the SRP1 field and the SRP2 field. The value indicated by the SRP1 field is the sum of the transmission power of the first AP on the first subchannel and the maximum interference power received by the first AP. The value indicated by the SRP2 field is the sum of the transmission power of the first AP on the second subchannel and the maximum interference power received by the first AP. The bandwidth of the first subchannel and the bandwidth of the second subchannel are equal to half the bandwidth of the EHT TB PPDU, and the frequency of the first subchannel is lower than the frequency of the second subchannel. The communication device and the first AP are located within the same OBSS. In this specification, “first AP” is the AP that transmits the trigger frame and is also the AP in the aforementioned method for determining the spatial reuse parameter field in the PPDU. If a station transmitting an EHT TB PPDU is considered the first STA, then the communication device, the first STA, and the first AP are different devices, and the communication device may receive information transmitted by the first STA and the first AP.

[0085] This solution provides a space reuse method to ensure compatibility between two SRP field examples within U-SIG and EHT TB PPDU, with space reuse implemented in accordance with the EHT standard. In this way, devices in overlapping basic service sets can perform transmissions simultaneously, improving transmission efficiency.

[0086] According to the 18th aspect, the present invention provides a communication device. The communication device may be an AP or an STA. Furthermore, the communication device may be a chip within an AP or an STA, such as a Wi-Fi chip. The communication device includes a determination unit configured to determine the transmission power of a PPDU based on values ​​indicated by the SRP1 and SRP2 fields, respectively, contained within the U-SIG of an EHT TB PPDU, and / or values ​​indicated by the four UL SRP fields, respectively, contained within the common information field of a trigger frame; and a transceiver unit configured to transmit the PPDU based on the transmission power of the PPDU.

[0087] The communication device may be an AP or an STA. If the communication device is an AP, the PPDU is a PSRR PPDU. If the communication device is an STA, the PPDU is a response frame in response to the PSRR PPDU.

[0088] Optionally, the transceiver unit is further configured to receive a trigger frame, which includes four UL SRP fields. The value indicated by one UL SRP field is the sum of the transmission power of the first AP on one subchannel and the maximum interference power received by the first AP. The communication device and the first AP are located within the same overlapping basic service set (OBSS). In this specification, “first AP” is the AP that transmits the trigger frame and is also the AP in the aforementioned method for determining the spatial reuse parameter fields within the PPDU. The communication device and the first AP are not the same device.

[0089] Optionally, the transceiver unit is further configured to receive an EHT TB PPDU, the U-SIG of the EHT TB PPDU containing SRP1 and SRP2 fields. The value indicated by the SRP1 field is the sum of the transmission power of the first AP on the first subchannel and the maximum interference power received by the first AP. The value indicated by the SRP2 field is the sum of the transmission power of the first AP on the second subchannel and the maximum interference power received by the first AP. The bandwidths of the first and second subchannels are equal to half the bandwidth of the EHT TB PPDU, and the frequency of the first subchannel is lower than the frequency of the second subchannel. The communication equipment and the first AP are located within the same OBSS. In this specification, “first AP” is the AP that transmits the trigger frame and is also the AP in the aforementioned method for determining the spatial reuse parameter field in the PPDU. If a station transmitting an EHT TB PPDU is considered the first STA, then the communication device, the first STA, and the first AP are different devices, and the communication device may receive information transmitted by the first STA and the first AP.

[0090] According to the 19th aspect, the present application provides a communication device that is specifically an AP in the first aspect and includes a processor and a transceiver. The processor is configured to generate a trigger frame, which is used to trigger a station to transmit an EHT TB PPDU. The transceiver is configured to transmit the trigger frame, and the transceiver is further configured to receive an EHT TB PPDU transmitted by the station. The values ​​indicated by the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU are determined based on the values ​​indicated by one or more UL SRP fields in the common information field of the trigger frame.

[0091] According to a 20th aspect, the present application provides a communication device that is specifically an STA in a second aspect, and includes a processor and a transceiver. The transceiver is configured to receive a trigger frame, which is used to trigger the STA to transmit an EHT TB PPDU. The processor is configured to generate an EHT TB PPDU, and the transceiver is further configured to transmit the EHT TB PPDU. The values ​​indicated by the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU are determined based on the values ​​indicated by one or more UL SRP fields in the common information field of the trigger frame. Optionally, the processor is further configured so that the STA sets the SRP1 and SRP2 fields included in the U-SIG of the EHT TB PPDU based on the values ​​indicated by the four UL SRP fields in the common information field of the trigger frame.

[0092] According to the 21st aspect, the present invention provides a communication device that is an AP in the fifth aspect and includes a processor and a transceiver. The processor is configured to generate a trigger frame, which is used to trigger a station to transmit an EHT TB PPDU, and the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, of which two have the same value and the other two have the same value. The transceiver is configured to transmit the trigger frame. The transceiver is further configured to receive an EHT TB PPDU transmitted by a station, where the value of the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the two UL SRP fields that have the same value, and the value of the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the other two UL SRP fields that have the same value.

[0093] According to the 22nd aspect, the present application provides a communication device that is specifically an STA in the 6th aspect and includes a processor and a transceiver. The transceiver is configured to receive a trigger frame, which is used to trigger a station to transmit an EHT TB PPDU, and the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, of which two have the same value and the other two have the same value. The processor is configured to generate an EHT TB PPDU, where the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the two UL SRP fields that have the same value, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the other two UL SRP fields that have the same value. The transceiver is further configured to transmit an EHT TB PPDU. Optionally, the processor is further configured to set the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU to the value indicated by one of the UL SRP fields in the first of two groups, and to set the value indicated by the SRP2 field in the U-SIG to the value indicated by one of the UL SRP fields in the second of two groups.

[0094] According to the 23rd aspect, the present application provides a communication device that is an AP in the 9th aspect and includes a processor and a transceiver. The processor is configured to generate a trigger frame, which is used to trigger a station to transmit an EHT TB PPDU, the trigger frame holding first indication information, the first indication information indicating the value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU. The transceiver is configured to transmit the trigger frame. The transceiver unit is further configured to receive the EHT TB PPDU transmitted by the station, the value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU is determined based on the first indication information.

[0095] According to the 24th aspect, the present application provides a communication device that is specifically an STA in the 10th aspect and includes a processor and a transceiver. The transceiver is configured to receive a trigger frame, which is used to trigger a station to transmit an EHT TB PPDU, the trigger frame holding first indication information, the first indication information indicating the value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU. The processor is configured to generate an EHT TB PPDU, the value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU being determined based on the first indication information. The transceiver is further configured to transmit the EHT TB PPDU. Optionally, the processor is further configured to set the values ​​of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU based on the indication of the first indication information.

[0096] According to the 25th aspect, the present application provides a communication device that is specifically an AP in the 13th aspect and includes a processor and a transceiver. The processor is configured to generate a trigger frame, which holds second indication information, the second indication information being used to schedule a station to transmit only EHT TB PPDUs, and the common information field of the trigger frame includes a first UL SRP field and a second UL SRP field, the first UL SRP field indicating the SRP value of a first bandwidth in the bandwidth of the EHT TB PPDU, and the second UL SRP field indicating the SRP value of a second bandwidth in the bandwidth of the EHT TB PPDU, both of which are half the bandwidth of the EHT TB PPDU, and the frequency of the first bandwidth is lower than the frequency of the second bandwidth. The transceiver is configured to transmit the trigger frame. The transceiver is further configured to receive EHT TB PPDUs transmitted by a station. The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the first UL SRP field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the second UL SRP field.

[0097] According to the 26th aspect, the present application provides a communication device that is specifically an STA in the 14th aspect and includes a processor and a transceiver. The transceiver is configured to receive a trigger frame, which holds second indication information, the second indication information indicating that the trigger frame is used to schedule a station to transmit only EHT TB PPDUs, and the common information field of the trigger frame includes a first UL SRP field and a second UL SRP field, the first UL SRP field indicating the SRP value of the first bandwidth in the bandwidth of the EHT TB PPDU, and the second UL SRP field indicating the SRP value of the second bandwidth in the bandwidth of the EHT TB PPDU, both of which are half the bandwidth of the EHT TB PPDU, and the frequency of the first bandwidth is lower than the frequency of the second bandwidth. The processor is configured to generate EHT TB PPDUs. The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the first UL SRP field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the second UL SRP field. The transceiver is further configured to transmit the EHT TB PPDU. Optionally, the processor is further configured to set the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU to the value indicated by the first UL SRP field, and the value indicated by the SRP2 field in the U-SIG to the value indicated by the second UL SRP field.

[0098] According to the 27th aspect, the present application provides a communication device, specifically the communication device of the 17th aspect, and comprising a processor and a transceiver. The processor is configured to determine the transmission power of the PPDU based on values ​​indicated by the SRP1 and SRP2 fields, respectively, contained within the U-SIG of the EHT TB PPDU, and / or values ​​indicated by the four UL SRP fields, respectively, contained within the common information field of the trigger frame. The transceiver is configured to transmit the PPDU based on the transmission power of the PPDU.

[0099] The communication device may be an AP or an STA. If the communication device is an AP, the PPDU is a PSRR PPDU. If the communication device is an STA, the PPDU is a response frame in response to the PSRR PPDU.

[0100] According to the 28th aspect, the present application provides a device which is implemented in the form of a chip and includes input / output interfaces and processing circuits.

[0101] In a possible design, the device is a chip within an AP in a first embodiment. Processing circuitry is configured to generate a trigger frame, which is used to trigger a station to transmit an EHT TB PPDU. An input / output interface is configured to output the trigger frame and transmit it through an antenna after processing is performed using radio frequency circuitry. The input / output interface is further configured to input an EHT TB PPDU transmitted by the station and received using the antenna and radio frequency circuitry. The values ​​indicated by the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU are determined based on the values ​​indicated by one or more UL SRP fields in the common information field of the trigger frame, respectively. In another implementation, the chip may include radio frequency circuitry.

[0102] In a possible design, the device is an AP in a fifth embodiment. The processing circuit is configured to generate a trigger frame, which is used to trigger a station to transmit an EHT TB PPDU, and the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, of which two have the same value and the other two have the same value. The input / output interface is configured to output the trigger frame and transmit the trigger frame through the antenna after processing is performed using the radio frequency circuit. The input / output interface is further configured to input an EHT TB PPDU transmitted by the station and received using the antenna and radio frequency circuit. The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the two UL SRP fields that have the same value, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the other two UL SRP fields that have the same value. In another implementation, the chip may include a radio frequency circuit.

[0103] In a possible design, the device is an AP in a ninth aspect. The processing circuit is configured to generate a trigger frame, which is used to trigger a station to transmit an EHT TB PPDU, the trigger frame holding first indication information, the first indication information indicating the value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU. The input / output interface is configured to output the trigger frame and transmit the trigger frame through the antenna after processing is performed using the radio frequency circuit. The input / output interface is further configured to input the EHT TB PPDU transmitted by the station and received using the antenna and radio frequency circuit. The value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU is determined based on the first indication information. In another implementation, the chip may include radio frequency circuitry.

[0104] In a possible design, the device is a chip within an AP in a thirteenth embodiment. The processing unit is configured to generate a trigger frame, which holds second indication information, which is used to schedule the station to transmit only EHT TB PPDUs, and the common information field of the trigger frame includes a first UL SRP field and a second UL SRP field, the first UL SRP field indicating the SRP value of the first bandwidth in the bandwidth of the EHT TB PPDU, and the second UL SRP field indicating the SRP value of the second bandwidth in the bandwidth of the EHT TB PPDU, both of which are half the bandwidth of the EHT TB PPDU, and the frequency of the first bandwidth is lower than the frequency of the second bandwidth. The input / output interface is configured to output the trigger frame and transmit the trigger frame through an antenna after processing has been performed using a radio frequency circuit. The input / output interface is further configured to receive an EHT TB PPDU transmitted by the station and received using an antenna and radio frequency circuit. The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the first UL SRP field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the second UL SRP field. In another implementation, the chip may include a radio frequency circuit.

[0105] According to the 29th aspect, the present application provides another device, which is implemented in the form of a chip and includes an input / output interface and processing circuitry.

[0106] In a possible design, the device is a chip within the STA in a second embodiment. The input / output interface is configured to input a trigger frame received by using an antenna and radio frequency circuitry, which is used to trigger the device to transmit an EHT TB PPDU. The processing circuitry is configured to generate the EHT TB PPDU, and the values ​​indicated by the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU are determined based on the values ​​indicated by one or more UL SRP fields in the common information field of the trigger frame, respectively. The input / output interface is further configured to output the EHT TB PPDU and transmit the EHT TB PPDU through the antenna after processing has been performed using the radio frequency circuitry. Optionally, the processing circuit is further configured so that the STA sets the SRP1 and SRP2 fields included in the U-SIG of the EHT TB PPDU based on the values ​​indicated by the four UL SRP fields in the common information field of the trigger frame. In another implementation, the chip may include radio frequency circuitry.

[0107] In a possible design, the device is a chip within the STA in a sixth embodiment. The input / output interface is configured to input a trigger frame received by using an antenna and radio frequency circuitry, which is used to trigger the device to transmit an EHT TB PPDU, and the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, of which two have the same value and the other two have the same value. The processing circuitry is configured to generate an EHT TB PPDU. The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by any of the UL SRP fields in the first of two groups, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by any of the UL SRP fields in the second of two groups. The input / output interface is further configured to output an EHT TB PPDU and transmit the EHT TB PPDU through the antenna after processing has been performed by using the radio frequency circuitry. Optionally, the processing unit is further configured to set the value indicated by the SRP1 field contained within the U-SIG of the EHT TB PPDU to the value indicated by one of two UL SRP fields that show the same value, and to set the value indicated by the SRP2 field within the U-SIG of the EHT TB PPDU to the value indicated by one of the other two UL SRP fields that show the same value. In another implementation, the chip may include radio frequency circuitry.

[0108] In a possible design, the device is a chip within the STA in a tenth embodiment. An input / output interface is configured to input a trigger frame received by using an antenna and radio frequency circuitry, the trigger frame being used to trigger the station to transmit an EHT TB PPDU, the trigger frame holding first indication information, the first indication information indicating the value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU. A processing circuitry is configured to generate an EHT TB PPDU. The value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU is determined based on the first indication information. The input / output interface is further configured to output an EHT TB PPDU and transmit the EHT TB PPDU through the antenna after processing is performed using the radio frequency circuitry. Optionally, the processing circuit is further configured to set the values ​​of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU based on the indication of the first indication information. In another implementation, the chip may include radio frequency circuitry.

[0109] In a possible design, the device is a chip within an STA in a 14th embodiment. The input / output interface is configured to receive a trigger frame received by using an antenna and radio frequency circuit, the trigger frame holding second indication information, the second indication information being used to schedule the station to transmit only EHT TB PPDUs, the common information field of the trigger frame includes a first UL SRP field and a second UL SRP field, the first UL SRP field indicating the SRP value of the first bandwidth in the bandwidth of the EHT TB PPDU, and the second UL SRP field indicating the SRP value of the second bandwidth in the bandwidth of the EHT TB PPDU, both of which are half the bandwidth of the EHT TB PPDU, and the frequency of the first bandwidth is lower than the frequency of the second bandwidth. The processing circuit is configured to generate the EHT TB PPDU. The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the first UL SRP field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the second UL SRP field. The input / output interface is further configured to output the EHT TB PPDU and transmit the EHT TB PPDU through the antenna after processing is performed using a radio frequency circuit. Optionally, the processing circuit is further configured to set the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU to the value indicated by the first UL SRP field, and the value indicated by the SRP2 field in the U-SIG to the value indicated by the second UL SRP field. In another implementation, the chip may include radio frequency circuitry.

[0110] According to a 30th aspect, the present invention provides another device, which is implemented in the form of a chip and includes an input / output interface and processing circuitry. The device is a chip in a communication device according to a 17th aspect. The processing circuitry is configured to determine the transmission power of the PPDU based on values ​​indicated by the SRP1 and SRP2 fields, respectively, contained within the U-SIG of the EHT TB PPDU, and / or the values ​​indicated by the four UL SRP fields, respectively, contained within the common information field of the trigger frame. The input / output interface is configured to transmit the PPDU through an antenna based on the transmission power of the PPDU after processing has been performed using a radio frequency unit. In another implementation, the chip may include radio frequency circuitry.

[0111] The device may be an AP or an STA. If the device is an AP, the PPDU is a PSRR PPDU. If the device is an STA, the PPDU is a response frame in response to the PSRR PPDU.

[0112] According to the 31st aspect, the present invention provides a computer-readable storage medium that stores instructions. When an instruction is executed on a computer, the computer can perform a method for determining a spatial reuse parameter field in a PPDU according to the first, second, fifth, sixth, ninth, tenth, thirteenth, or fourteenth aspect.

[0113] According to the 32nd aspect, the present invention provides a computer-readable storage medium. The computer-readable storage medium stores instructions. When an instruction is executed on a computer, the computer is able to perform the space reuse method according to the 17th aspect.

[0114] According to the 33rd aspect, the present application provides a computer program product including instructions. When the computer program product is executed on a computer, the computer is able to perform a method for determining a spatial reuse parameter field in a PPDU according to the first, second, fifth, sixth, ninth, tenth, thirteenth, or fourteenth aspect.

[0115] According to the 34th aspect, the present invention further provides a computer program product including instructions. When the computer program product is executed on a computer, the computer becomes capable of performing the space reuse method of the 17th aspect.

[0116] In embodiments of the present invention, in scenarios where a trigger frame is used to schedule an EHT station or to schedule an HE station and an EHT station simultaneously, the frame structure of the EHT TB PPDU does not need to be changed, and the spatial reuse parameter fields of the EHT TB PPDU may be set based on four UL SRP fields in the trigger frame. [Brief explanation of the drawing]

[0117] To more clearly explain the technical solutions in the embodiments of this application, the accompanying drawings used to illustrate the embodiments will be briefly described below.

[0118] [Figure 1] This is a schematic diagram showing the architecture of a wireless communication system according to one embodiment of the present invention.

[0119] [Figure 2a] This is a schematic diagram showing the structure of an access point according to one embodiment of the present invention.

[0120] [Figure 2b] This is a schematic diagram showing the structure of a station according to one embodiment of the present invention.

[0121] [Figure 3a] This is a schematic diagram of an OBSS formed by partially overlapping one BSS and another.

[0122] [Figure 3b] This is a schematic diagram of an OBSS formed by one BSS containing another BSS.

[0123] [Figure 4] This is a schematic diagram of the trigger-based uplink scheduling transmission method in the 802.11ax standard.

[0124] [Figure 5a] This is a schematic diagram of the trigger frame format.

[0125] [Figure 5b] This is a schematic diagram of the frame format for common information fields and user information fields within trigger frames in 802.11ax.

[0126] [Figure 6a] This is a schematic diagram of the frame format for common information fields and user information fields within a trigger frame in 802.11be.

[0127] [Figure 6b] This is a schematic diagram showing the frame structure of the EHT TB PPDU.

[0128] [Figure 7] This is a schematic flowchart 1 of a method for determining the spatial reuse parameter field within a PPDU according to one embodiment of the present invention.

[0129] [Figure 8]This is a sequence diagram according to one embodiment of the present invention, in which an HE station and an EHT station are simultaneously scheduled to perform uplink data transmission by using a trigger frame.

[0130] [Figure 9] This is a schematic flowchart 2 of a method for determining the spatial reuse parameter field within a PPDU according to one embodiment of the present invention.

[0131] [Figure 10] This is a schematic flowchart 3 of a method for determining the spatial reuse parameter field within a PPDU according to one embodiment of the present invention.

[0132] [Figure 11a] This is a schematic diagram showing the SRP within the U-SIG of a trigger frame according to one embodiment of the present invention.

[0133] [Figure 11b] This is another schematic diagram showing the SRP in the U-SIG of a trigger frame according to one embodiment of the present invention.

[0134] [Figure 12] This is a schematic flowchart 4 of a method for determining the spatial reuse parameter field within a PPDU according to one embodiment of the present invention.

[0135] [Figure 13] This is a schematic flowchart of a space reuse method according to one embodiment of the present invention.

[0136] [Figure 14] This is a sequence diagram of a space reuse method according to one embodiment of the present invention.

[0137] [Figure 15] This is another schematic flowchart of a space reuse method according to one embodiment of the present invention.

[0138] [Figure 16] This is a schematic diagram showing the structure of a communication device 1 according to one embodiment of the present invention.

[0139] [Figure 17] This is a schematic diagram showing the structure of a communication device 2 according to one embodiment of the present invention.

[0140] [Figure 18] This is a schematic diagram showing the structure of a communication device 3 according to one embodiment of the present invention.

[0141] [Figure 19] This is a schematic diagram showing the structure of a communication device 1000 according to one embodiment of the present invention. [Modes for carrying out the invention]

[0142] Hereinafter, the technical solutions in the embodiments of this application will be clearly and completely described with reference to the accompanying drawings.

[0143] To facilitate understanding of the methods provided in the embodiments of the present application, the system architecture and / or application scenarios of the methods provided in the embodiments of the present application are described below. The system architecture and / or application scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions in the embodiments of the present application and should be understood not to constitute limitations on the technical solutions provided in the embodiments of the present application.

[0144] Embodiments of the present invention provide a method for determining the space reuse parameter field within a PPDU. In scenarios where an EHT station is scheduled using a trigger frame, or where HE stations and EHT stations are scheduled simultaneously, the frame structure of the EHT TB PPDU remains unchanged. Specifically, the length of the U-SIG field in the EHT TB PPDU remains unchanged (i.e., it maintains 8 bits), and the spatial reuse parameter field in the EHT TB PPDU is set based on the four UL SRP fields in the trigger frame. Thus, HE stations and EHT stations may be scheduled using the same trigger frame, and spatial reuse may be implemented in accordance with the EHT standard. WLAN devices in overlapping basic service sets can perform transmissions simultaneously, improving transmission efficiency. The method for determining the spatial reuse parameter field in the PPDU may be applied to wireless communication systems, such as wireless local area network systems. The method for determining the spatial reuse parameter field in the PPDU may be implemented by a communication device in the wireless communication system or by a chip or processor in the communication device. The communication device may be an access point device or a station device. Alternatively, the communication device may be a wireless communication device that supports simultaneous transmission over multiple links. For example, the communication device may be called a multi-link device (MLD) or multiband device. Compared to a communication device that supports only single-link transmission, a multi-link device has higher transmission efficiency and higher throughput.

[0145] The method for determining the spatial reuse parameter field in a PPDU, provided in embodiments of the present application, can be applied to scenarios in which an AP communicates with one or more STAs, a scenario in which an AP communicates with another AP, and a scenario in which an STA communicates with another STA. See Figure 1. Figure 1 is a schematic diagram showing the architecture of a wireless communication system according to one embodiment of the present application. As shown in Figure 1, the wireless communication system may include one or more APs (e.g., AP1 and AP2 in Figure 1) and one or more STAs (e.g., STA1, STA2, and STA3 in Figure 1). AP1 and AP2 may be located in the same OBSS. Both APs and STAs support the WLAN communication protocol. This communication protocol may include 802.11be (or Wi-Fi 7, referred to as the EHT protocol) and may further include protocols such as 802.11ax and 802.11ac. Naturally, this communication protocol may further include next-generation protocols of 802.11be, etc., as communication technology continues to evolve and develop. WLAN is used as an example. The apparatus for implementing the method in this application may be an AP or STA within a WLAN, or a chip or processing system located within an AP or STA.

[0146] An access point (for example, AP1 or AP2 in Figure 1) is a device having wireless communication capabilities, supporting communication using the WLAN protocol, and having the ability to communicate with other devices (e.g., stations or other access points) within the WLAN network, and, of course, may have the ability to communicate with even more devices. In a WLAN system, an access point may be referred to as an access point station (AP STA). The device having wireless communication capabilities may be an entire device, or a chip or processing system installed in the entire device. A device on which a chip or processing system is installed may implement the methods and functions of the embodiments of this application under the control of the chip or processing system. The AP in the embodiments of this application is a device that provides services for the STA and may support the 802.11 series protocol. For example, the AP may be a communication entity, such as a communication server, router, switch, or bridge. The AP may include various forms of macro base stations, micro base stations, and relay stations, etc. Of course, the AP may alternatively be a chip or processing system in various forms of these devices to implement the methods and functions of the embodiments of this application.

[0147] A station (for example, STA1, STA2, or STA3 in Figure 1) is a device having wireless communication capabilities, supporting communication using the WLAN protocol, and having the ability to communicate with other stations or access points within the WLAN network. In a WLAN system, a station may be referred to as a non-access point station (non-AP STA). For example, an STA is any user communication device that enables a user to communicate with an AP and further with the WLAN. The device having wireless communication capabilities may be an entire device, or a chip or processing system installed in the entire device. A device on which a chip or processing system is installed may implement the methods and functions of the embodiments of this application under the control of the chip or processing system. For example, an STA may be a user device that can connect to the Internet, such as a tablet computer, desktop computer, laptop computer, notebook computer, ultra-mobile personal computer (UMPC), handheld computer, notebook, personal digital assistant (PDA®), or mobile phone. Alternatively, the STA may be an Internet of Things node within the Internet of Things, an in-vehicle communication device within the Internet of Vehicles, an entertainment device, a game device or system, or a global positioning system device, etc. Alternatively, the STA may be a chip and processing system within the aforementioned terminal.

[0148] WLAN systems can provide high-speed, low-latency transmission. With the continuous evolution of WLAN application scenarios, WLAN systems will be applied to a wider range of scenarios and industries, such as the Internet of Things industry, the Internet of Vehicles industry, the banking industry, corporate offices, stadium exhibition halls, concert halls, hotel rooms, dormitories, hospital rooms, classrooms, supermarkets, squares, streets, factories, and warehouses. Naturally, devices supporting WLAN communication (such as access points or stations) may include sensor nodes in a smart city (e.g., smart water meters, smart electricity meters, or smart air detection nodes), smart devices in a smart home (e.g., smart cameras, projectors, displays, televisions, stereos, refrigerators, or washing machines), nodes in the Internet of Things, entertainment terminals (e.g., AR, VR, or other wearable devices), smart devices in a smart office (e.g., printers, projectors, loudspeakers, or stereos), Internet of Vehicle devices within the Internet of Vehicles, infrastructure in everyday life scenarios (e.g., vending machines, self-service navigation stations in supermarkets, self-service cash register devices, or self-service ordering machines), and devices in large sports and music venues. The specific forms of STA and AP are not limited to the embodiments of this application and are merely examples for illustrative purposes herein.

[0149] The 802.11 standard focuses on the physical layer (PHY) and the medium access control (MAC) layer. See Figure 2a for an example. Figure 2a is a schematic diagram showing the structure of an access point according to one embodiment of the present application. The AP may be multi-antenna / multi-radio frequency or single-antenna / single-radio frequency. The antenna / radio frequency is configured to transmit / receive data packets. In one implementation, the antenna or radio frequency section of the AP may be separated from the main body of the AP, i.e., it may be located remotely. In Figure 2a, the AP may include physical layer processing circuitry and medium access control layer processing circuitry. The physical layer processing circuitry may be configured to process physical layer signals, and the MAC layer processing circuitry may be configured to process MAC layer signals. See Figure 2b for another example. Figure 2b is a schematic diagram showing the structure of a station according to one embodiment of the present application. Figure 2b is a schematic diagram showing the structure of a single-antenna / radio frequency STA. In a real-world scenario, the STA may be multi-antenna / multi-radio frequency, and may be a device with more than two antennas. The antennas / radio frequencies are configured to transmit / receive data packets. In one implementation, the antenna or radio frequency section of the STA may be separated from the main body of the STA, i.e., located remotely. In Figure 2b, the STA may include a PHY processing circuit and a MAC processing circuit. The physical layer processing circuit may be configured to process physical layer signals, and the MAC layer processing circuit may be configured to process MAC layer signals.

[0150] The above description briefly explains the system architecture in the embodiments of the present invention. To better understand the technical solutions in the embodiments of the present invention, the following will explain the contents related to the embodiments of the present invention.

[0151] [1. Overlapping Basic Service Sets (BSS, OBSS)]

[0152] Overlapping basic service sets: Two basic service sets operate on the same channel, and this basic service set is (partially or completely) within the basic service area (BSA) of the station's basic service set. An overlapping basic service area is referred to as an overlapping basic service set (OBSS): a basic service set (BSS) that operates on the same channel as the station's (STA's) BSS and is (partially or completely) within its basic service area (BSA). A basic service area is an area that contains members of a basic service set and may contain members of other BSSs (basic service area (BSA): an area that contains members of a basic service set (BSS). This may contain members of other BSSs).

[0153] In other words, the overlapping area between the basic service area of ​​one BSS and the basic service area of ​​the other BSS is the OBSS. It should be understood that overlapping in this specification means that the basic service area of ​​one BSS partially overlaps with or includes the basic service area of ​​the other BSS; specifically, that the basic service area of ​​one BSS is included within the basic service area of ​​the other BSS. See Figure 3a. Figure 3a is a schematic diagram of the OBSS formed by the partial overlap of one BSS and the other BSS. In Figure 3a, AP1, STA1, and STA3 belong to BSS1, and AP2 and STA2 belong to BSS2. There is an overlapping area between BSS1 and BSS2, and AP1 and AP2 are located within this overlapping area between BSS1 and BSS2; in other words, they are located within the OBSS formed by BSS1 and BSS2. See Figure 3b. Figure 3b is a schematic diagram of the OBSS formed by one BSS including the other BSS. In Figure 3b, AP1, STA1, and STA3 belong to BSS1, and AP2 and STA2 belong to BSS2. BSS1 includes BSS2, and AP1 and AP2 are located within the overlapping area between BSS1 and BSS2 (i.e., the basic service area of ​​BSS2 in Figure 3b), in other words, they are located within the OBSS formed by BSS1 and BSS2.

[0154] Optionally, WLAN devices located within the same OBSS can receive information from two BSSs. For example, Figure 3a is used as an example. When AP1 and STA1, located within the same BSS, perform data transmission, AP2, located within the other BSS, may receive information transmitted by AP1 and STA1, or AP2 may also receive information transmitted by STA3. AP2 can implement simultaneous transmission within the OBSS by adaptively adjusting the power to which AP2 transmits PPDUs to STA2 based on space reuse parameters transferred by AP1. Similarly, when AP2 and STA2, located within the same BSS, perform data transmission, AP1, located within the other BSS, may receive information transmitted by AP2. Alternatively, AP1 can implement simultaneous transmission within the OBSS by adaptively adjusting the power to which AP1 transmits PPDUs to STA1 and / or STA3 based on space reuse parameters transferred by AP2.

[0155] [2. Trigger-based uplink scheduling transmission method in the 802.11ax standard]

[0156] Please refer to Figure 4. Figure 4 is a schematic diagram of the trigger-based uplink scheduling transmission method in the 802.11ax standard. As shown in Figure 4, the trigger-based uplink scheduling transmission method in the 802.11ax standard specifically includes (1) a step in which the AP transmits a trigger frame, which is used to schedule one or more STAs to transmit an uplink trigger-based HE PPDU. The trigger-based HE PPDU may be abbreviated as HE TB PPDU. Please refer to Figure 5a. Figure 5a is a schematic diagram of the frame format of the trigger frame. As shown in Figure 5a, the trigger frame includes a common information field and a user information list field. The common information field includes common information that all STAs need to read, and includes the AP transmission power (AP TX Power) field and the uplink space reuse (UL Spatial Reuse) field. The user information list field includes one or more user information fields, each of which contains information that one STA needs to read. Please refer to Figure 5b. Figure 5b is a schematic diagram of the frame format for the common information field and user information field within a trigger frame in 802.11ax. As shown in Figure 5b, in the user information field, the association identifier 12 (AID12) indicates the association identifier of the STA, and the resource unit (RU) allocation subfield indicates the location of the specific resource unit assigned to the STA (the STA indicated by AID12).

[0157] (2) After receiving the trigger frame, one or more STAs parse the trigger frame to obtain the user information field that matches the STA's AID, and then transmit the HE TB PPDU on the RU indicated by the resource unit allocation subfield in the user information field.

[0158] (3) After receiving the HE TB PPDU, the AP sends back an acknowledgment frame to one or more STAs to acknowledge that the AP has received the HE TB PPDU.

[0159] For the meaning and function of fields that may be optionally included in the HE TB PPDU, please refer to Table 1 below. [Table 1] [Table 1]

[0160] [3. EHT TB PPDU]

[0161] The trigger-based uplink scheduling transmission method in 802.11ax is still used in 802.11be, and the frame format and method procedure for trigger frames in 802.11be are the same as in 802.11ax. See Figure 6a. Figure 6a is a schematic diagram of the frame format of the common information field and user information field in a trigger frame in 802.11be. The trigger frame shown in Figure 6a may be used to schedule an EHT station to transmit uplink data, for example, to schedule an EHT station to transmit an EHT TB PPDU. Please understand that Figure 6a is just an example. In this embodiment of the application, the UL SRP field in the uplink space reuse field of the common information field is relevant. Other fields in the trigger frame may differ from those in Figure 6a, in other words, they may be represented in a different format. This is not limited to this embodiment of the application.

[0162] Please refer to Figure 6b. Figure 6b is a schematic diagram showing the frame structure of an EHT TB PPDU. As shown in Figure 6b, an EHT TB PPDU includes a legacy short training sequence, a legacy long training sequence, a legacy signaling field, a repeating legacy signaling field, a universal signaling field, an ultra-high throughput short training sequence, an ultra-high throughput long training sequence, a data field, and a data packet extension field. For the meaning of the fields included in an EHT TB PPDU, please refer to Table 2 below. [Table 2] [Table 2]

[0163] Due to the limited length of the U-SIG within the EHT TB PPDU (the U-SIG is only 1 byte, or 8 bits), the U-SIG can contain a maximum of two SRP fields, each with a length of 4 bits, as can be seen from the frame structure of the EHT TB PPDU in Figure 6b. The common information field of the trigger frame holds four UL SRP fields, and the HE-SIG-A field of the HE TB PPDU also contains four SRP fields that correspond one-to-one with the four UL SRP fields in the trigger frame. Therefore, in a scenario where an EHT station is scheduled to transmit an uplink EHT TB PPDU using the trigger frame, the SRP fields in the EHT TB PPDU cannot be set in the same way as the SRP fields in the HE TB PPDU. Thus, how to set the space reuse parameter to schedule HE and EHT stations using the same trigger frame has become an urgent issue to be resolved.

[0164] Embodiments of the present invention provide a method for determining the space reuse parameter field within a PPDU. For different bandwidths, the uplink space reuse parameter in the trigger frame and the space reuse parameter in the EHT TB PPDU are set without changing the frame structure of the EHT TB PPDU. As a result, HE stations and EHT stations can be scheduled using the same trigger frame, enabling space reuse to be implemented in the EHT standard. In this way, WLAN devices in a redundant basic service set can perform transmissions simultaneously, improving transmission efficiency.

[0165] The technical solutions provided in this application will be described in detail below with reference to more attached drawings.

[0166] The technical solutions provided in this application will be described by using Embodiments 1 to 5. Embodiment 1 describes how to set space reuse parameters in EHT TB PPDUs of different bandwidths (20 / 40 / 80 / 160 / 320 MHz) without changing the UL SRP value in the 802.11ax trigger frame. Embodiment 2 describes how to set the UL SRP value in the trigger frame and the space reuse parameters in trigger-based PPDUs of different bandwidths (80 / 160 / 320 MHz). Embodiment 3 describes how, in the 320 MHz bandwidth, a special user information field in the trigger frame is used to separately indicate the space reuse parameters in the EHT TB PPDU. Embodiment 4 describes how to set the UL SRP value in the trigger frame when an EHT station is scheduled to transmit only EHT TB PPDUs. Embodiment 5 describes a space reuse method based on space reuse parameters in 802.11be. It can be understood that any combination of the technical solutions described in Embodiments 1 to 5 of this application may form new embodiments.

[0167] It can be understood that AP and STA in this application may be single-link devices or functional entities or functional units within multi-link devices. For example, AP in this application is an AP within an AP multi-link device, and STA is an STA within a station multi-link device. This is not limited to this application.

[0168] It should be understood that the method provided in this application is described below using a communication system comprising one or more APs and one or more STAs as an example. The AP supports the 802.11be protocol (or Wi-Fi 7, referred to as the EHT protocol) and may further support other WLAN communication protocols, such as 802.11ax and 802.11ac. At least one STA in the one or more STAs supports the 802.11be protocol; in other words, there is at least one EHT station. It should be understood that the APs and STAs in this application may further support next-generation protocols of 802.11be. In other words, the method provided in this application is applicable not only to the 802.11be protocol but also to next-generation protocols of 802.11be. [Embodiment 1]

[0169] Embodiment 1 of the present invention primarily describes setting a space reuse parameter in an EHT TB PPDU with a bandwidth of 20 / 40 / 80 / 160 / 320 MHz without changing the UL SRP value in the trigger frame (or without changing the contents of the trigger frame).

[0170] Please refer to Figure 7. Figure 7 is a schematic flowchart 1 of a method for determining the spatial reuse parameter field in a PPDU according to one embodiment of the present invention. As shown in Figure 7, the method for determining the spatial reuse parameter field in a PPDU includes, but is not limited to, the following steps.

[0171] S101: The AP sends a trigger frame. The trigger frame is used to trigger the station to send an ultra-high throughput trigger-based physical layer protocol data unit (EHT TB PPDU).

[0172] S102: STA receives the trigger frame.

[0173] S103: The STA transmits an EHT TB PPDU. The values ​​indicated by the spatial reuse parameters SRP1 and SRP2 fields in the universal signal field U-SIG of the EHT TB PPDU are determined based on the values ​​indicated by one or more uplink spatial reuse parameters UL SRP fields in the common information field of the trigger frame.

[0174] S104: The AP receives the EHT TB PPDU transmitted by the station.

[0175] Optionally, a trigger frame may not be used solely to trigger an EHT station to transmit an EHT TB PPDU, but may also be used to trigger an HE station to transmit an HE TB PPDU. Alternatively, a trigger frame may be used solely to trigger an EHT station to transmit an EHT TB PPDU, or solely to trigger an HE station to transmit an HE TB PPDU. While this embodiment of the application focuses on the case in which a trigger frame is used to trigger an EHT station to transmit an EHT TB PPDU, it is not limited to the case in which a trigger frame is used solely to trigger an EHT station to transmit an EHT TB PPDU, and may also include the case in which a trigger frame is used to simultaneously trigger an EHT station to transmit an EHT TB PPDU, or an HE station / EHT station to transmit an HE TB PPDU. It may be understood that an HE station can transmit only HE TB PPDUs, while an EHT station may be compatible with the 802.11ax protocol. Therefore, an EHT station can transmit both HE TB PPDU and EHT TB PPDU.

[0176] Optionally, the U-SIG of an EHT TB PPDU includes only two spatial reuse parameter (SRP) fields, namely the SRP1 field and the SRP2 field. The SRP1 and SRP2 fields each indicate an SRP value on a different subchannel, where the SRP value is equal to the sum of the AP's transmission power and the maximum interference power received by the AP on the corresponding subchannel. The values ​​indicated by the SRP1 and SRP2 fields, respectively, may be determined based on the values ​​indicated by the four UL SRP fields in the common information field of the trigger frame. It should be understood that the SRP1 and SRP2 fields in the U-SIG of an EHT TB PPDU may have other names, e.g., the PSR1 and PSR2 fields. This is not limited to this embodiment of the present application.

[0177] Specifically, a trigger frame can be broadcast. After an AP sends a trigger frame, one or more stations may receive it. If the trigger frame is used to simultaneously schedule an EHT station to send an EHT TB PPDU and an HE station to send an HE TB PPDU, the EHT station may set the values ​​indicated by the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU based on the values ​​indicated by one or more UL SRP fields in the common information field of the received trigger frame and send the EHT TB PPDU. In other words, the EHT station may alternatively set the values ​​indicated by the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU based on the values ​​indicated by one or more UL SRP fields in the common information field of the received trigger frame. The HE station may copy the values ​​of the four UL SRP fields in the received trigger frame one by one into the four SRP fields in the HE TB PPDU and send the HT TB PPDU.

[0178] Optionally, the correspondence between the values ​​and meanings of the UL SRP field or SRP field in this application may be shown in Table 3 below. The Uplink Space Reuse Parameter (UL SRP) field may also be referred to as the Uplink Parameterized Space Reuse (UL PSR) field. In this application, UL SRP and UL PSR may be used interchangeably; that is, SRP and PSR may be used interchangeably. The value of the space reuse parameter is determined by the AP and may be understood to be equal to the sum of the AP's transmission power and the maximum interference power received by the AP. [Table 3] [Table 3]

[0179] In this application, it can be understood that the value indicated by the UL SRP field may be any value in the second column of Table 3, and the value of the UL SRP field may be any value in the first column of Table 3.

[0180] Please refer to Figure 8. Figure 8 is a sequence diagram illustrating how an HE station and an EHT station are simultaneously scheduled to perform uplink data transmission using a trigger frame, according to one embodiment of the present invention. As shown in Figure 8, the AP transmits a trigger frame, which is used to simultaneously schedule an HE station (e.g., STA1 in Figure 8) and an EHT station (e.g., STA2 in Figure 8) to perform uplink data transmission. After STA1 and STA2 receive the trigger frame, at a time interval (e.g., short frame space), STA1 transmits an HE TB PPDU and STA2 transmits an EHT TB PPDU. After receiving the uplink multi-user PPDU, the AP returns a Multiple STA Block Acknowledgment (M-BA) frame at a time interval (e.g., short frame space) to acknowledge that the AP has received the PPDU transmitted by one or more stations. The trigger frame shown in Figure 8 can be used to schedule only EHT stations; in other words, it can be understood that both STA1 and STA2 in Figure 8 are EHT stations. The trigger frame shown in Figure 8 can also be used to schedule stations to transmit only EHT TB PPDUs; in other words, it can be further understood that both STA1 and STA2 in Figure 8 transmit EHT TB PPDUs.

[0181] The following details the configuration of the SRP1 and SRP2 fields within the U-SIG for EHT TB PPDUs of different bandwidths. It can be understood that the common information fields of the trigger frame include four UL SRP fields: UL SRP1, UL SRP2, UL SRP3, and UL SRP4.

[0182] [1. 20MHz bandwidth]

[0183] In a 20MHz bandwidth, only one 20MHz sub-channel is included, and only one UL SRP value and one SRP value are required. However, to unify the indication format, four UL SRP fields are still transmitted within the trigger frame, and the values ​​of the four UL SRP fields are the same, i.e., UL SRP1 = UL SRP2 = UL SRP3 = UL SRP4. In other words, in a 20MHz bandwidth, the values ​​indicated by the four UL SRP fields included within the trigger frame are the same, or the values ​​of the four UL SRP fields included within the trigger frame are the same.

[0184] For an EHT station transmitting an EHT TB PPDU, if a 20MHz bandwidth is used to schedule the EHT TB PPDU (i.e., the bandwidth of the EHT TB PPDU is 20MHz), the U-SIG of the EHT TB PPDU will contain two SRP fields (i.e., the SRP1 field and the SRP2 field). Both the value indicated by the SRP1 field and the value indicated by the SRP2 field are equal to the value indicated by any one of the four UL SRP fields in the trigger frame. In other words, if the bandwidth of the EHT TB PPDU is 20MHz, both the value of the SRP1 field and the value of the SRP2 field in the U-SIG are equal to the value of any UL SRP field in the trigger frame, which can be expressed as SRP1=SRP2=any one of the UL SRPs.

[0185] For HE or EHT stations transmitting an HE TB PPDU, if a 20MHz bandwidth is used to schedule the HE TB PPDU (i.e., the bandwidth of the HE TB PPDU is 20MHz), the values ​​of the four SRP fields within HE-SIG-A of the HE TB PPDU are still the values ​​copied from the four UL SRP values ​​in the trigger frame.

[0186] It can be understood that the four SRP fields in HE-SIG-A of the HE TB PPDU are described in this embodiment of the application in comparison to the settings of the SRP1 and SRP2 fields in U-SIG of the EHT TB PPDU. In this embodiment of the application, the settings of the four SRP fields in HE-SIG-A of the HE TB PPDU are unchanged; that is, the values ​​of the four UL SRP fields in the trigger frame are copied one by one.

[0187] [2. 40MHz bandwidth]

[0188] In a 40MHz bandwidth, the trigger frame still transmits four UL SRP fields, where the value of the UL SRP1 field is the same as the value of the UL SRP3 field, and the value of the UL SRP2 field is the same as the value of the UL SRP4 field, i.e., UL SRP1 = UL SRP3 and UL SRP2 = UL SRP4. Specifically, in a 40MHz bandwidth, the UL SRP1 and UL SRP3 fields included in the trigger frame each represent the SRP value of the first 20MHz subchannel (i.e., the lower 20MHz subchannel) in the 40MHz bandwidth in ascending frequency order, and the values ​​indicated by the UL SRP1 and UL SRP3 fields are the same. In other words, the values ​​of the UL SRP1 and UL SRP3 fields are the same. The UL SRP2 and UL SRP4 fields included in the trigger frame each represent the SRP value of the second 20MHz subchannel (i.e., the higher 20MHz subchannel) in the 40MHz bandwidth in ascending frequency order, and the values ​​indicated by the UL SRP2 and UL SRP4 fields are the same. In other words, the values ​​of the UL SRP2 field and the UL SRP4 field are the same.

[0189] For an EHT TB PPDU with a bandwidth of 40 MHz, the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP1 field or the UL SRP3 field; and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP2 field or the UL SRP4 field. In other words, if the bandwidth of the EHT TB PPDU is 40 MHz, the value of the SRP1 field in the U-SIG is equal to the value of the UL SRP1 field or the UL SRP3 field in the trigger frame, which can be expressed as SRP1=UL SRP1=UL SRP3. The value of the SRP2 field in the U-SIG is equal to the value of the UL SRP2 field or the UL SRP4 field in the trigger frame, which can be expressed as SRP2=UL SRP2=UL SRP4. In other words, in a 40MHz bandwidth, the two SRP fields within the U-SIG correspond to the UL SRP1 field and the UL SRP2 field (or the UL SRP3 field and the UL SRP4 field), and each SRP field within the U-SIG represents the SRP value on the 20MHz subchannel.

[0190] For HE TB PPDUs (with a 40MHz bandwidth), the values ​​of the four SRP fields within HE-SIG-A of the HE TB PPDU are still the values ​​copied from the four UL SRP values ​​in the trigger frame.

[0191] [3. 80MHz or 160MHz bandwidth]

[0192] The 80MHz bandwidth includes four 20MHz subchannels, and the common information field in the trigger frame includes four UL SRP fields, each of which represents the SRP value of the four 20MHz subchannels on the 80MHz channel in ascending order of frequency. Similarly, the 160MHz bandwidth includes four 40MHz subchannels, and each of the four UL SRP fields in the trigger frame represents the SRP value of the four 40MHz subchannels on the 160MHz channel in ascending order of frequency.

[0193] For HE TB PPDU, the four SRP fields within HE-SIG-A correspond one-to-one with the four UL SRP fields within the trigger frame. For example, the value of the SRP1 field within HE-SIG-A is equal to the value of the UL SRP1 field, the value of the SRP2 field within HE-SIG-A is equal to the value of the UL SRP2 field, the value of the SRP3 field within HE-SIG-A is equal to the value of the UL SRP3 field, and the value of the SRP4 field within HE-SIG-A is equal to the value of the UL SRP4 field.

[0194] For EHT TB PPDUs, the U-SIG contains only two SRP fields. In cases where the contents of the trigger frame have not been changed, after receiving the trigger frame, the EHT station may group any two of the four UL SRP fields into one group and the other two UL SRP fields into another group, assign the minimum (or maximum or average) value of one of the two groups to the SRP1 field in the U-SIG, and assign the minimum (or maximum or average) value of the other group to the SRP2 field in the U-SIG. In one example, the UL SRP1 and UL SRP3 fields form one group, and the UL SRP2 and UL SRP4 fields form another group. The minimum (or maximum or average) value of the values ​​indicated by the UL SRP1 and UL SRP3 fields is assigned to the SRP1 field in the U-SIG, and the minimum (or maximum or average) value of the values ​​indicated by the UL SRP2 and UL SRP4 fields is assigned to the SRP2 field in the U-SIG. In another example, the UL SRP1 and UL SRP4 fields form one group, and the UL SRP2 and UL SRP3 fields form another group. The minimum (or maximum or average) value among the values ​​represented by the UL SRP1 and UL SRP4 fields is assigned to the SRP1 field in the U-SIG, and the minimum (or maximum or average) value among the values ​​represented by the UL SRP2 and UL SRP3 fields is assigned to the SRP2 field in the U-SIG.

[0195] In yet another example, after receiving a trigger frame, the EHT station selects the smaller value between the values ​​indicated by the UL SRP1 field and the UL SRP2 field, and the smaller value between the values ​​indicated by the UL SRP3 field and the UL SRP4 field, and assigns these values ​​to the SRP1 and SRP2 fields in the U-SIG. In other words, the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the minimum value between the values ​​indicated by the UL SRP1 field and the UL SRP2 field, and the value indicated by the SRP2 field is equal to the minimum value between the values ​​indicated by the UL SRP3 field and the UL SRP4 field. In other words, if the bandwidth of the EHT TB PPDU is 80 MHz or 160 MHz, the value of the SRP1 field in the U-SIG is equal to the minimum value among the values ​​of the UL SRP1 and UL SRP2 fields, which can be expressed as SRP1 = min{UL SRP1, UL SRP2}. The value of the SRP2 field in U-SIG is equal to the minimum value of the UL SRP3 and UL SRP4 fields, which can be expressed as SRP2 = min{UL SRP3, UL SRP4}. It should be understood that the function min{x, y} indicates that the minimum values ​​of x and y are taken.

[0196] Optionally, for EHT TB PPDUs, after receiving the trigger frame, the EHT station may alternatively assign the average of the values ​​indicated by the UL SRP1 field and the UL SRP2 field to the SRP1 field in the U-SIG, and the average of the values ​​indicated by the UL SRP3 field and the UL SRP4 field to the SRP2 field in the U-SIG. In other words, the value indicated by the SRP1 field in the U-SIG of an EHT TB PPDU is equal to the average of the values ​​indicated by the UL SRP1 field and the UL SRP2 field, and the value indicated by the SRP2 field is equal to the average of the values ​​indicated by the UL SRP3 field and the UL SRP4 field. This can be expressed as SRP1=avg{UL SRP1,UL SRP2} and SRP2=avg{UL SRP3,UL SRP4}. It should be understood that the function avg{x,y} indicates that the average values ​​of x and y are taken.

[0197] Optionally, for EHT TB PPDUs, after receiving the trigger frame, the EHT station may alternatively assign the maximum value of the values ​​indicated by the UL SRP1 field and the UL SRP2 field to the SRP1 field in the U-SIG, and the maximum value of the values ​​indicated by the UL SRP3 field and the UL SRP4 field to the SRP2 field in the U-SIG. In other words, the value indicated by the SRP1 field in the U-SIG of an EHT TB PPDU is equal to the maximum value of the values ​​indicated by the UL SRP1 field and the UL SRP2 field, and the value indicated by the SRP2 field is equal to the maximum value of the values ​​indicated by the UL SRP3 field and the UL SRP4 field. This can be expressed as SRP1=max{UL SRP1,UL SRP2} and SRP2=max{UL SRP3,UL SRP4}. It should be understood that the function max{x,y} indicates that the maximum values ​​of x and y are taken.

[0198] In this example, the minimum / maximum / average values ​​are selected from the values ​​assigned to the SRP1 field in the U-SIG, as indicated by the UL SRP1 and UL SRP2 fields, and the minimum / maximum / average values ​​are selected from the values ​​assigned to the SRP2 field in the U-SIG, as indicated by the UL SRP3 and UL SRP4 fields. As a result, the SRP1 field in the U-SIG may represent the SRP value of the lower half of the total bandwidth in ascending order of frequency, and the SRP2 field in the U-SIG may represent the SRP value of the higher half of the total bandwidth in ascending order of frequency. In other words, the SRP1 field in the U-SIG represents the SRP value of the lower 40MHz bandwidth of the 80MHz bandwidth, and the SRP2 field in the U-SIG represents the SRP value of the higher 40MHz bandwidth of the 80MHz bandwidth. This is the same for the 160MHz bandwidth.

[0199] [4. 320MHz bandwidth]

[0200] The maximum bandwidth supported in the 802.11be standard is 320 MHz, and the maximum bandwidth supported in the 802.11ax standard is 160 MHz. Therefore, to avoid affecting the setting of the SRP field in HE-SIG-A of the HE TB PPDU on the primary 160 MHz channel (i.e., the HE station copying the UL SRP value on the primary 160 MHz channel to the HE-SIG-A of the HE TB PPDU transmitted by the HE station), the four UL SRP fields in the trigger frame (i.e., UL SRP1 to UL SRP4) still represent the UL SRP value on the primary 160 MHz channel.

[0201] Therefore, in a 320MHz bandwidth, each of the four UL SRP fields contained within the trigger frame represents the SRP values ​​of the four 40MHz subchannels on the primary 160MHz channel in ascending order of frequency, and each of the four 40MHz subchannels on the secondary 160MHz channel is the same as the SRP values ​​of the four 40MHz subchannels on the primary 160MHz channel (i.e., the four SRP values ​​on the secondary 160MHz channel correspond one-to-one with the four SRP values ​​on the primary 160MHz channel). In other words, the UL SRP field represents the SRP value on the primary 160MHz channel. As with the indication in the 160MHz bandwidth, the SRP value on the secondary 160MHz channel is the same as the SRP value on the primary 160MHz channel, and the SRP value on the secondary 160MHz channel is implicitly indicated.

[0202] If the trigger frame is not adjusted, the smaller value between the values ​​indicated by the UL SRP1 field and the UL SRP2 field, and the smaller value between the values ​​indicated by the UL SRP3 field and the UL SRP4 field, is selected as the value indicated by the two SRP fields in the U-SIG of the EHT TB PPDU. In other words, the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the minimum value between the values ​​indicated by the UL SRP1 field and the UL SRP2 field, and the value indicated by the SRP2 field is equal to the minimum value between the values ​​indicated by the UL SRP3 field and the UL SRP4 field. In other words, if the bandwidth of the EHT TB PPDU is 320 MHz, the value of the SRP1 field in the U-SIG is equal to the minimum value between the values ​​of the UL SRP1 field and the UL SRP2 field, which can be expressed as SRP1 = min{UL SRP1, UL SRP2}. The value of the SRP2 field in U-SIG is equal to the minimum value of the UL SRP3 and UL SRP4 fields, which can be expressed as SRP2 = min{UL SRP3, UL SRP4}.

[0203] Optionally, as with the 80MHz and 160MHz bandwidths, SRP1 may be max{UL SRP1,UL SRP2} and SRP2 may be max{UL SRP3,UL SRP4}. Alternatively, SRP1 may be avg{UL SRP1,UL SRP2} and SRP2 may be avg{UL SRP3,UL SRP4}.

[0204] In bandwidths of 80 MHz, 160 MHz, or 320 MHz, in this embodiment of the present application, the smaller (or minimum) value among the values ​​indicated by the UL SRP1 field and the values ​​indicated by the UL SRP2 field is assigned to the SRP1 field in the U-SIG, and the smaller (or minimum) value among the values ​​indicated by the UL SRP3 field and the values ​​indicated by the UL SRP4 field is assigned to the SRP2 field in the U-SIG. This ensures that the transmission power of devices located within the same OBSS as the AP does not interfere with AP transmissions on some 20 MHz subchannels, and that the problem of insufficient SRP fields in the U-SIG can also be resolved.

[0205] Table 4 shows that for different bandwidths (20MHz / 40MHz / 80MHz / 160MHz / 320MHz), the settings for the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU and the settings for the SRP1 through SRP4 fields in the HE-SIG-A of the HE TB PPDU can be summarized as shown. In Table 4, " / " represents an "or" relationship, i.e., "A / B" represents A or B. [Table 4] [Table 4] JPEG2026082851000006.jpg140170

[0206] In this embodiment of the present application, the contents of the trigger frame are not changed for different bandwidths (i.e., the UL SRP values ​​in the trigger frame are not changed), and as a result, the HE station can set the space reuse parameter in the original manner, and the HE station experiences no loss of granularity. In addition, in this embodiment of the present application, the frame structure of the U-SIG is not changed (e.g., the length of 1 byte is maintained), and the space reuse parameter in the U-SIG of the EHT TB PPDU is set based on the four UL SRP fields in the trigger frame, and as a result, the EHT station may be scheduled to transmit the uplink EHT TB PPDU using the trigger frame, and the HE station and the EHT station may be scheduled using the same trigger frame. [Embodiment 2]

[0207] Embodiment 2 of the present invention primarily describes how to modify the UL SRP value in the trigger frame (i.e., how to modify the contents of the trigger frame) to accommodate the SRP field of U-SIGs with different bandwidths (80 / 160 / 320 MHz), and how to set the space reuse parameters in the trigger-based PPDU (HE TB PPDU and EHT TB PPDU) after the UL SRP value in the trigger frame has been modified.

[0208] In practical applications, Embodiment 2 of the present application may be implemented by reference to some implementations in Embodiment 1, or independently. This is not limited to the present embodiments of the present application. For example, Embodiment 2 of the present application is implemented with a method for setting the SRP1 and SRP2 fields in the U-SIG when the bandwidth is 20 MHz and / or 40 MHz in Embodiment 1. In other words, in Embodiment 2 of the present application, the UL SRP value in the trigger frame is not changed when the bandwidth is 20 MHz or 40 MHz. For a method for setting the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU, please refer to the corresponding description in Embodiment 1. Details will not be described again here.

[0209] Please refer to Figure 9. Figure 9 is a schematic flowchart 2 of a method for determining the spatial reuse parameter field in a PPDU according to one embodiment of the present invention. As shown in Figure 9, the method for determining the spatial reuse parameter field in a PPDU includes, but is not limited to, the following steps.

[0210] S201: The AP sends a trigger frame. The trigger frame is used to trigger the station to send an EHT TB PPDU, and the common information field of the trigger frame contains four UL SRP fields, two of which have the same value and the other two have the same value.

[0211] S202:STA receives the trigger frame.

[0212] S203:STA transmits an EHT TB PPDU. The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the two UL SRP fields which have the same value, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the other two UL SRP fields which have the same value.

[0213] S204: The AP receives the EHT TB PPDU transmitted by the station.

[0214] Optionally, a trigger frame may not be used solely to trigger an EHT station to transmit an EHT TB PPDU, but may also be used to trigger an HE station to transmit an HE TB PPDU. Alternatively, a trigger frame may be used solely to trigger an EHT station to transmit an EHT TB PPDU, or solely to trigger an HE station to transmit an HE TB PPDU. While this embodiment of the application focuses on cases where a trigger frame is used to trigger an EHT station to transmit an EHT TB PPDU, it is not limited to cases where a trigger frame is used solely to trigger an EHT station to transmit an EHT TB PPDU, but may also include cases where a trigger frame is used to simultaneously trigger an EHT station to transmit an EHT TB PPDU and an HE / EHT station to transmit an HE TB PPDU.

[0215] Optionally, the U-SIG of an EHT TB PPDU includes only two spatial reuse parameter (SRP) fields, namely the SRP1 field and the SRP2 field. The SRP1 and SRP2 fields each represent an SRP value on a different subchannel, where the SRP value is equal to the sum of the AP's transmission power and the maximum interference power received by the AP on the corresponding subchannel. It should be understood that the SRP1 and SRP2 fields in the U-SIG of an EHT TB PPDU may have other names, e.g., the PSR1 and PSR2 fields. This is not limited to these embodiments of the present application.

[0216] The common information field of the trigger frame still contains four UL SRP fields: UL SRP1, UL SRP2, UL SRP3, and UL SRP4. Two of the four UL SRP fields have the same value, and the other two have the same value. In other words, the four UL SRP fields may be considered as two groups, each group containing two UL SRP fields, and the values ​​indicated by the two UL SRP fields within each group are the same. For example, UL SRP1 and UL SRP2 may be considered as one group, and UL SRP3 and UL SRP4 as the other group; or UL SRP1 and UL SRP3 may be considered as one group, and UL SRP2 and UL SRP4 as the other group; or UL SRP1 and UL SRP4 may be considered as one group, and UL SRP2 and UL SRP3 as the other group. The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by any UL SRP field in one group (i.e., two UL SRP fields that show the same value), and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by any UL SRP field in the other group (i.e., two other UL SRP fields that show the same value).

[0217] For different bandwidths (80 / 160 / 320MHz), the following describes in detail the configuration of spatial reuse parameter fields within a trigger-based PPDU, using an example where the UL SRP1 and UL SRP2 fields form one group and the UL SRP3 and UL SRP4 fields form the other group.

[0218] [1. 80MHz or 160MHz bandwidth]

[0219] The 80MHz bandwidth includes four 20MHz subchannels, and the common information field in the trigger frame includes four UL SRP fields, each of which represents the SRP value of the four 20MHz subchannels on the 80MHz channel in ascending order of frequency. Similarly, the 160MHz bandwidth includes four 40MHz subchannels, and each of the four UL SRP fields in the trigger frame represents the SRP value of the four 40MHz subchannels on the 160MHz channel in ascending order of frequency.

[0220] In the 80MHz or 160MHz bandwidth, the UL SRP values ​​within the trigger frame are changed, resulting in the value indicated by the UL SRP1 field being the same as the value indicated by the UL SRP2 field, and the value indicated by the UL SRP3 field being the same as the value indicated by the UL SRP4 field. In other words, in the 80MHz or 160MHz bandwidth, the value of the UL SRP1 field within the trigger frame is the same as the value of the UL SRP2 field, which can be expressed as UL SRP1 = UL SRP2. The value of the UL SRP3 field within the trigger frame is the same as the value of the UL SRP4 field, which can be expressed as UL SRP3 = UL SRP4. To put it another way, in the 80MHz bandwidth, within the trigger frame, the UL SRP values ​​of the two 20MHz subchannels of the first 40MHz subchannel in ascending frequency order are the same, and the UL SRP values ​​of the two 20MHz subchannels of the second 40MHz subchannel in ascending frequency order are also the same. In a 160MHz bandwidth, in the trigger frame, the UL SRP values ​​of the two 40MHz subchannels of the first 80MHz subchannel in ascending frequency order are the same, and the UL SRP values ​​of the two 40MHz subchannels of the second 80MHz subchannel in ascending frequency order are also the same.

[0221] In HE TB PPDU, the four SRP fields in HE-SIG-A correspond one-to-one with the four UL SRP fields in the trigger frame; that is, the values ​​of the four SRP fields in HE-SIG-A are still copied from the values ​​of the four UL SRP fields in the trigger frame. For example, the value of the SRP1 field in HE-SIG-A is equal to the value of the UL SRP1 field, the value of the SRP2 field in HE-SIG-A is equal to the value of the UL SRP2 field, the value of the SRP3 field in HE-SIG-A is equal to the value of the UL SRP3 field, and the value of the SRP4 field in HE-SIG-A is equal to the value of the UL SRP4 field. For EHT TB PPDU, U-SIG contains only two SRP fields. The value indicated by the SRP1 field in U-SIG is equal to the value indicated by the UL SRP1 or UL SRP2 field, and the value indicated by the SRP2 field in U-SIG is equal to the value indicated by the UL SRP3 or UL SRP4 field. In other words, if the bandwidth of the EHT TB PPDU is 80 MHz or 160 MHz, the value of the SRP1 field in the U-SIG is equal to the value of the UL SRP1 field or the UL SRP2 field, which can be expressed as SRP1 = UL SRP1 / UL SRP2. The value of the SRP2 field in the U-SIG is equal to the value of the UL SRP3 field or the UL SRP4 field, which can be expressed as SRP2 = UL SRP3 / UL SRP4.

[0222] Optionally, in the 80MHz or 160MHz bandwidth, the AP may determine how the value indicated by the UL SRP1 field in the trigger frame is the same as the value indicated by the UL SRP2 field (or UL SRP1=UL SRP2), and how the value indicated by the UL SRP3 field is the same as the value indicated by the UL SRP4 field (or UL SRP3=UL SRP4). For example, in the 80MHz bandwidth, UL SRP1=UL SRP2=min{AP transmission power + maximum interference power received by the AP on the 1st 20MHz subchannel, AP transmission power + maximum interference power received by the AP on the 2nd 20MHz subchannel}; and UL SRP3=UL SRP4=min{AP transmission power + maximum interference power received by the AP on the 3rd 20MHz subchannel, AP transmission power + maximum interference power received by the AP on the 4th 20MHz subchannel}. The first, second, third, and fourth 20MHz subchannels are four 20MHz subchannels in an 80MHz bandwidth in ascending order of frequency. The function min{x,y} shows that the minimum values ​​of x and y are taken.

[0223] Similarly, in another example, in a 160MHz bandwidth, UL SRP1 = UL SRP2 = min{AP transmission power + maximum interference power received by AP on the 1st 40MHz subchannel, AP transmission power + maximum interference power received by AP on the 2nd 40MHz subchannel}; and UL SRP3 = UL SRP4 = min{AP transmission power + maximum interference power received by AP on the 3rd 40MHz subchannel, AP transmission power + maximum interference power received by AP on the 4th 40MHz subchannel}. The 1st, 2nd, 3rd, and 4th 40MHz subchannels are the four 40MHz subchannels in ascending order of frequency in a 160MHz bandwidth.

[0224] Optionally, for 80MHz or 160MHz bandwidths, UL SRP1 = UL SRP2 = max{AP transmission power + maximum interference power received by AP on the 1st 20MHz (or 40MHz) subchannel, AP transmission power + maximum interference power received by AP on the 2nd 20MHz (or 40MHz) subchannel}; and UL SRP3 = UL SRP4 = max{AP transmission power + maximum interference power received by AP on the 3rd 20MHz (or 40MHz) subchannel, AP transmission power + maximum interference power received by AP on the 4th 20MHz (or 40MHz) subchannel}.

[0225] Optionally, for 80MHz or 160MHz bandwidths, UL SRP1 = UL SRP2 = avg{AP transmission power + maximum interference power received by AP on the 1st 20MHz (or 40MHz) subchannel, AP transmission power + maximum interference power received by AP on the 2nd 20MHz (or 40MHz) subchannel}; and UL SRP3 = UL SRP4 = avg{AP transmission power + maximum interference power received by AP on the 3rd 20MHz (or 40MHz) subchannel, AP transmission power + maximum interference power received by AP on the 4th 20MHz (or 40MHz) subchannel}.

[0226] [2. 320MHz bandwidth]

[0227] The maximum bandwidth supported in the 802.11be standard is 320 MHz, and the maximum bandwidth supported in the 802.11ax standard is 160 MHz. Therefore, to avoid affecting the setting of the SRP field in HE-SIG-A of the HE TB PPDU on the primary 160 MHz channel (i.e., the HE station copying the UL SRP value on the primary 160 MHz channel to the HE-SIG-A of the HE TB PPDU transmitted by the HE station), the four UL SRP fields in the trigger frame (i.e., UL SRP1 to UL SRP4) still represent the UL SRP value on the primary 160 MHz channel.

[0228] Therefore, in a 320MHz bandwidth, each of the four UL SRP fields contained within the trigger frame represents the SRP values ​​of four 40MHz subchannels on the primary 160MHz channel in ascending order of frequency, and each of the four 40MHz subchannels on the secondary 160MHz channel is the same as the SRP values ​​of four 40MHz subchannels on the primary 160MHz channel (i.e., the four SRP values ​​on the secondary 160MHz channel correspond one-to-one with the four SRP values ​​on the primary 160MHz channel).

[0229] In a 320MHz bandwidth, the UL SRP values ​​within the trigger frame are modified, resulting in the value indicated by the UL SRP1 field being the same as the value indicated by the UL SRP2 field, and the value indicated by the UL SRP3 field being the same as the value indicated by the UL SRP4 field. In other words, in a 320MHz bandwidth, the value of the UL SRP1 field within the trigger frame is the same as the value of the UL SRP2 field, which can be expressed as UL SRP1 = UL SRP2. The value of the UL SRP3 field within the trigger frame is the same as the value of the UL SRP4 field, which can be expressed as UL SRP3 = UL SRP4.

[0230] In an HE TB PPDU, the four SRP fields in HE-SIG-A correspond one-to-one with the four UL SRP fields in the trigger frame; that is, the values ​​of the four SRP fields in HE-SIG-A are still copied from the values ​​of the four UL SRP fields in the trigger frame. For an EHT TB PPDU, the U-SIG contains only two SRP fields. The value represented by the SRP1 field in the U-SIG is equal to the value represented by the UL SRP1 or UL SRP2 field, and the value represented by the SRP2 field in the U-SIG is equal to the value represented by the UL SRP3 or UL SRP4 field. In other words, if the bandwidth of the EHT TB PPDU is 320 MHz, the value of the SRP1 field in the U-SIG is equal to the value of the UL SRP1 or UL SRP2 field, which can be expressed as SRP1 = UL SRP1 / UL SRP2. The value of the SRP2 field in U-SIG is equal to the value of the UL SRP3 field or UL SRP4 field, which can be expressed as SRP2 = UL SRP3 / UL SRP4. U-SIG uses the two SRP fields to determine the SRP value for the entire 320MHz bandwidth (the four UL SRP fields in the trigger frame still only show the SRP values ​​for each 80MHz subband at the primary 160MHz, and the SRP value at the secondary 160MHz is the same as the SRP value at the primary 160MHz), and it can be seen that the four SRP fields in HE-SIG-A correctly represent the SRP information on the primary 160MHz channel.

[0231] Optionally, in the 320MHz bandwidth, the AP may determine how the value indicated by the UL SRP1 field in the trigger frame is the same as the value indicated by the UL SRP2 field (or UL SRP1 = UL SRP2), and how the value indicated by the UL SRP3 field is the same as the value indicated by the UL SRP4 field (or UL SRP3 = UL SRP4). For details, please refer to the corresponding explanations for the 80MHz or 160MHz bandwidths mentioned above. Details will not be explained again here.

[0232] Table 5 shows that for different bandwidths (80MHz / 160MHz / 320MHz), the settings for UL SRP1 to UL SRP4 fields in the trigger frame, the settings for SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU, and the settings for SRP1 to SRP4 fields in the HE-SIG-A of the HE TB PPDU within the U-SIG of the EHT TB PPDU can be summarized as shown. In Table 5, " / " indicates an "or" relationship. [Table 5] [Table 5] JPEG2026082851000008.jpg152170

[0233] In actual application, when Embodiment 2 of the present invention is implemented by referring to a method for setting the SRP1 and SRP2 fields in U-SIG, and the bandwidth is 20 MHz and / or 40 MHz in Embodiment 1, it can be understood that for bandwidths of 20 / 40 / 80 / 160 / 320 MHz, the settings of the UL SRP1 to UL SRP4 fields in the trigger frame, the settings of the SRP1 and SRP2 fields in U-SIG, and the settings of the SRP1 to SRP4 fields in HE-SIG-A can be summarized as shown in Table 6 below. In Table 6, " / " represents an "or" relationship. [Table 6] [Table 6] JPEG2026082851000010.jpg147170

[0234] In this embodiment of the present application, the UL SRP value in the trigger frame is modified (i.e., the contents of the trigger frame are modified) to conform to the SRP field of the U-SIG, and the space reuse parameter field in the U-SIG is set, so that the trigger frame can schedule an EHT station to transmit an uplink EHT TB PPDU, or an HE station and an EHT station can be scheduled by using the same trigger frame.

[0235] In an optional embodiment, for any bandwidth (e.g., 20 MHz, 40 MHz, 80 MHz, 160 MHz, or 320 MHz), the UL SRP value in the trigger frame is changed so that there is only one UL SRP value across the entire bandwidth, i.e., the value represented by the four UL SRP fields included in the trigger frame is the same. In other words, for any bandwidth, the values ​​of the four UL SRP fields included in the trigger frame are the same, which can be expressed as UL SRP1 = UL SRP2 = UL SRP3 = UL SRP4.

[0236] In an HE TB PPDU, the four SRP fields in HE-SIG-A correspond one-to-one with the four UL SRP fields in the trigger frame; that is, the values ​​of the four SRP fields in HE-SIG-A are still copied from the values ​​of the four UL SRP fields in the trigger frame. For an EHT TB PPDU, the U-SIG contains only two SRP fields. Both the values ​​indicated by the SRP1 and SRP2 fields in the U-SIG are equal to the values ​​indicated by any one of the UL SRP1, UL SRP2, UL SRP3, and UL SRP4 fields. In other words, if the bandwidth of the EHT TB PPDU is arbitrary, the values ​​of the SRP1 and SRP2 fields in the U-SIG are equal to the values ​​of any one of the UL SRP1, UL SRP2, UL SRP3, and UL SRP4 fields, which can be expressed as SRP1=SRP2=UL SRP1 / UL SRP2 / UL SRP3 / UL SRP4.

[0237] In this embodiment of the present application, it can be seen that the two SRP fields within the U-SIG still each represent an SRP value of half the total bandwidth. [Embodiment 3]

[0238] Embodiment 3 of the present invention primarily describes a case with a 320 MHz bandwidth in which a special user information field in the trigger frame independently indicates the spatial reuse parameter of the EHT TB PPDU.

[0239] In practical applications, Embodiment 3 of the present invention may be implemented by reference to Embodiment 1 or Embodiment 2 described above, with respect to a method for configuring the SRP1 and SRP2 fields in the U-SIG in bandwidths of 20 MHz, 40 MHz, 80 MHz, and 160 MHz. Embodiment 3 of the present invention may be implemented separately, and is not limited to the present embodiments of the present invention.

[0240] Please refer to Figure 10. Figure 10 is a schematic flowchart 3 of a method for determining the spatial reuse parameter field in a PPDU according to one embodiment of the present invention. As shown in Figure 10, the method for determining the spatial reuse parameter field in a PPDU includes, but is not limited to, the following steps.

[0241] S301: The AP sends a trigger frame. The trigger frame is used to trigger the station to send an EHT TB PPDU, and the trigger frame holds first indication information, which indicates the value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU.

[0242] S302: STA receives the trigger frame.

[0243] S303:STA transmits an EHT TB PPDU. The values ​​of the SRP1 field and / or SRP2 field in the U-SIG of the EHT TB PPDU are determined based on the first indication information.

[0244] S304: The AP receives the EHT TB PPDU transmitted by the station.

[0245] Optionally, a trigger frame may not be used solely to trigger an EHT station to transmit an EHT TB PPDU, but may also be used to trigger an HE station to transmit an HE TB PPDU. Alternatively, a trigger frame may be used solely to trigger an EHT station to transmit an EHT TB PPDU, or solely to trigger an HE station to transmit an HE TB PPDU. While this embodiment of the application focuses on cases where a trigger frame is used to trigger an EHT station to transmit an EHT TB PPDU, it is not limited to cases where a trigger frame is used solely to trigger an EHT station to transmit an EHT TB PPDU, but may also include cases where a trigger frame is used to simultaneously trigger an EHT station to transmit an EHT TB PPDU and an HE / EHT station to transmit an HE TB PPDU.

[0246] Optionally, the U-SIG of an EHT TB PPDU includes only two spatial reuse parameter (SRP) fields, namely the SRP1 field and the SRP2 field. The SRP1 and SRP2 fields each represent an SRP value on a different subchannel, where the SRP value is equal to the sum of the AP's transmission power and the maximum interference power received by the AP on the corresponding subchannel. It should be understood that the SRP1 and SRP2 fields in the U-SIG of an EHT TB PPDU may have other names, e.g., the PSR1 and PSR2 fields. This is not limited to these embodiments of the present application.

[0247] The trigger frame may hold first indication information, which may indicate the values ​​of the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU, or the value of the SRP2 field in the U-SIG of the EHT TB PPDU. The first indication information may be located in the user information field of the trigger frame. The value of the association identifier (AID) field in the user information field is a preset value. The preset value may be any one of the following: 2008 to 2044, or 2046 to 4095. For example, the preset value is 2044. Optionally, the common information field of the trigger frame may include four UL SRP fields: UL SRP1, UL SRP2, UL SRP3, and UL SRP4. Each of the four UL SRP fields may indicate the values ​​of the four SRP fields in the EHT TB PPDU.

[0248] Optionally, the bandwidth of the EHT TB PPDU is 320 MHz. In cases where the HE station cannot perform transmission in the 320 MHz bandwidth, the four UL SRP fields included in the common information field of the trigger frame still each represent the SRP values ​​of four 40 MHz subchannels on the primary 160 MHz channel in ascending order of frequency. After receiving the trigger frame, the HE station copies the values ​​of the four UL SRP fields in the trigger frame to the four SRP fields in the HE-SIG-A of the HE TB PPDU. Therefore, the four UL SRP fields can also be understood as values ​​representing the four SRP fields in the HE-SIG-A.

[0249] For EHT stations, the AID12 field in the user information field within the trigger frame is set to a special value (e.g., AID12=2044), and as a result, the EHT station can identify that the user information field functions to set the SRP field in the U-SIG. In other words, the user information field holds the first indication information, which indicates the values ​​of the SRP1 and / or SRP2 fields in the U-SIG. It should be understood that HE stations do not parse the user information field where the AID12 field is a special value within the trigger frame, or that the HE station receives the user information field where the AID12 field is a special value, which indicates that this field is irrelevant to the HE station. In other words, the first indication information added to the trigger frame does not affect the behavior of the HE station.

[0250] If the first indication information represents the values ​​of the SRP1 and SRP2 fields in the U-SIG, the 8 bits following the AID12 field in the user information field are used to hold the first indication information. The first 4 bits of the 8 bits represent the value of the SRP1 field in the U-SIG, and the last 4 bits of the 8 bits represent the value of the SRP2 field. It should be understood that the 8 bits can be represented by a first field and a second field. The first field is the first 4 bits of the 8 bits, and the second field is the last 4 bits of the 8 bits. Specifically, the first field following the AID12 field (e.g., AID12=2044) represents the value of the SRP1 field in the U-SIG, and the second field following the AID12 field (e.g., AID12=2044) represents the value of the SRP2 field in the U-SIG. It should be further understood that the first field may be referred to as the U-SIG UL SRP1 field, and the second field may be referred to as the U-SIG UL SRP2 field. The first and second fields may have other names, and this is not limited to these embodiments of the present application.

[0251] After receiving a trigger frame, the EHT station sets the value of the SRP1 field in the U-SIG of the EHT TB PPDU to the value of the first field in the user information field of the trigger frame, and sets the value of the SRP2 field in the U-SIG to the value of the second field in the user information field of the trigger frame. The first and second fields in the user information field of the trigger frame each correspond to a 160MHz bandwidth. For example, the first field corresponds to the first 160MHz bandwidth in ascending order of frequency, and the second field corresponds to the second 160MHz bandwidth in ascending order of frequency. In other words, the SRP1 field in the U-SIG corresponds to the first 160MHz bandwidth in ascending order of frequency, and the SRP2 field in the U-SIG corresponds to the second 160MHz bandwidth in ascending order of frequency.

[0252] Please refer to Figure 11a. Figure 11a is a schematic diagram showing the SRP in the U-SIG of a trigger frame according to one embodiment of the present invention. As shown in Figure 11a, the user information fields of the trigger frame include the AID12 field, the UL SRP1 field used in the U-SIG, and the UL SRP2 field used in the U-SIG, etc. The value of the AID12 field is a special value, e.g., 2044. The UL SRP1 and UL SRP2 fields of the U-SIG are located after the AID12 field and may or may not be adjacent to the AID12 field. The UL SRP1 field of the U-SIG indicates the value of the SRP1 field in the U-SIG, and the UL SRP2 field of the U-SIG indicates the value of the SRP2 field in the U-SIG. The value indicated by the UL SRP1 field of the U-SIG is equal to the sum of the AP's transmission power and the maximum interference power received by the AP on the primary 160MHz channel. The value indicated by the UL SRP2 field of the U-SIG is equal to the sum of the AP's transmission power and the maximum interference power received by the AP on the secondary 160MHz channel. For the correspondence between the values ​​and the meanings of the UL SRP1 and UL SRP2 fields of the U-SIG, refer to Table 3 in Embodiment 1 described above.

[0253] If the first indication information indicates only the value of the SRP2 field in the U-SIG, the four bits after the AID12 field in the user information field are used to hold the first indication information. In other words, these four bits indicate the value of the SRP2 field in the U-SIG. These four bits may be referred to as the UL SRP2 field of the U-SIG, and may have other names. This is not limited to this embodiment of the present application. Optionally, if the first indication information indicates only the value of the SRP2 field in the U-SIG, the four reserved bits in the common information field of the trigger frame may be used to hold the first indication information; that is, the four reserved bits are used to indicate the value of the SRP2 field in the U-SIG. The common information field of the trigger frame contains four UL SRP fields. After receiving a trigger frame, the EHT station sets the value of the SRP1 field in the U-SIG of the EHT TB PPDU to be transmitted to the smallest value among the four UL SRP fields contained in the common information field of the trigger frame, i.e., SRP1 = min(UL SRP1, UL SRP2, UL SRP3, UL SRP4); and sets the value of the SRP2 field in the U-SIG to the value of the UL SRP2 field in the U-SIG in the user information field of the trigger frame. The SRP1 field in the U-SIG corresponds to the first 160MHz bandwidth in ascending order of frequency, and the SRP2 field in the U-SIG corresponds to the second 160MHz bandwidth in ascending order of frequency.

[0254] Please refer to Figure 11b. Figure 11b is another schematic diagram showing the SRP in the U-SIG of a trigger frame according to one embodiment of the present invention. As shown in Figure 11b, the common information field of the trigger frame includes four UL SRP fields, each indicating the SRP value of four 40 MHz subchannels on the primary 160 MHz channel in ascending order of frequency. The user information field of the trigger frame includes the AID12 field and the UL SRP2 field of the U-SIG, etc. The value of the AID12 field is a special value, e.g., 2044. The UL SRP2 field of the U-SIG is located after the AID12 field and may or may not be adjacent to the AID12 field. The UL SRP2 field of the U-SIG indicates the value of the SRP2 field in the U-SIG. The value indicated by the UL SRP2 field of the U-SIG is equal to the sum of the AP's transmission power and the maximum interference power received by the AP on the secondary 160MHz channel, or equal to the SRP value on the secondary 160MHz channel. For the correspondence between the values ​​and the meaning of the UL SRP2 field of the U-SIG, refer to Table 3 in Embodiment 1 described above.

[0255] It should be understood that this embodiment of the present application primarily focuses on a method for configuring the SRP1 and SRP2 fields within the U-SIG in a 320 MHz bandwidth. For methods for configuring the SRP1 and SRP2 fields within the U-SIG in a 160 MHz or smaller bandwidth, please refer to the relevant descriptions in Embodiment 1 or Embodiment 2. Details will not be described again here.

[0256] In this embodiment of the present application, in the case of a 320 MHz bandwidth, it can be seen that a special user information field in the trigger frame independently indicates the spatial reuse parameter of the EHT TB PPDU. The meaning of the special user information field is clear, and the scheduling of the HE station is not affected. Thus, HE stations and EHT stations can be scheduled using the same trigger frame. [Embodiment 4]

[0257] Embodiment 4 of the present invention primarily describes a method for setting the UL SRP value in a trigger frame when an EHT station is scheduled to transmit only EHT TB PPDU.

[0258] Please refer to Figure 12. Figure 12 is a schematic flowchart 4 of a method for determining the spatial reuse parameter field in a PPDU according to one embodiment of the present invention. As shown in Figure 12, the method for determining the spatial reuse parameter field in a PPDU includes, but is not limited to, the following steps.

[0259] S401: The AP transmits a trigger frame. The trigger frame contains second indication information, which indicates that the trigger frame is used to schedule the station to transmit only EHT TB PPDUs. The common information field of the trigger frame includes a first UL SRP field and a second UL SRP field, where the first UL SRP field indicates the SRP value of the first bandwidth in the EHT TB PPDU bandwidth, and the second UL SRP field indicates the SRP value of the second bandwidth in the EHT TB PPDU bandwidth. Both the first and second bandwidths are half the bandwidth of the EHT TB PPDU, and the frequency of the first bandwidth is lower than the frequency of the second bandwidth.

[0260] S402: STA receives the trigger frame.

[0261] S403:STA transmits an EHT TB PPDU. The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the first UL SRP field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the second UL SRP field.

[0262] S404; AP receives the EHT TB PPDU transmitted by the station.

[0263] Optionally, the U-SIG of an EHT TB PPDU includes only two spatial reuse parameter (SRP) fields, namely the SRP1 field and the SRP2 field. The SRP1 and SRP2 fields each represent an SRP value on a different subchannel, where the SRP value is equal to the sum of the AP's transmission power and the maximum interference power received by the AP on the corresponding subchannel. It should be understood that the SRP1 and SRP2 fields in the U-SIG of an EHT TB PPDU may have other names, e.g., the PSR1 and PSR2 fields. This is not limited to these embodiments of the present application.

[0264] Specifically, the trigger frame holds second indication information, which indicates that the trigger frame is used to schedule a station (or EHT station) to transmit only EHT TB PPDUs. The second indication information may be 1 to 4 bits. Since the U-SIG field of the EHT TB PPDU contains only two SRP fields and the trigger frame does not schedule an HE station, only two valid UL SRP fields are required in the common information field of the trigger frame. The common information field of the trigger frame may contain a first UL SRP field and a second UL SRP field. The first UL SRP field may indicate the SRP value of the first bandwidth in the bandwidth of the EHT TB PPDU, and the second UL SRP field may indicate the SRP value of the second bandwidth in the bandwidth of the EHT TB PPDU. The first and second bandwidths are equal to half the bandwidth of the EHT TB PPDU. The first bandwidth is the low-frequency portion of the EHT TB PPDU bandwidth in ascending order of frequency, and the second bandwidth is the high-frequency portion of the EHT TB PPDU bandwidth in ascending order of frequency; that is, the frequencies of the first bandwidth are lower than the frequencies of the second bandwidth.

[0265] After receiving the trigger frame, the EHT station sets the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU to the value indicated by the first UL SRP field and sets the value indicated by the SRP2 field in the U-SIG to the value indicated by the second UL SRP field. In other words, the value of the SRP1 field in the U-SIG is equal to the value of the first UL SRP field, and the value of the SRP2 field in the U-SIG is equal to the value of the second UL SRP field.

[0266] When the bandwidth of the EHT TB PPDU is 40 MHz, the first UL SRP field indicates the SRP value in the first 20 MHz (i.e., the lower 20 MHz) bandwidth in the 40 MHz bandwidth in ascending order of frequency, and the second UL SRP field indicates the SRP value in the second 20 MHz (i.e., the higher 20 MHz) bandwidth in the 40 MHz bandwidth in ascending order of frequency. When the bandwidth of the EHT TB PPDU is 80 MHz, the first UL SRP field indicates the SRP value in the first 40 MHz (i.e., the lower 40 MHz) bandwidth in the 80 MHz bandwidth in ascending order of frequency, and the second UL SRP field indicates the SRP value in the second 40 MHz (i.e., the higher 40 MHz) bandwidth in the 80 MHz bandwidth in ascending order of frequency. When the bandwidth of the EHT TB PPDU is 160 MHz, the first UL SRP field indicates the SRP value in the first 80 MHz (i.e., the lower 80 MHz) bandwidth in the 160 MHz bandwidth in ascending order of frequency, and the second UL SRP field indicates the SRP value in the second 80 MHz (i.e., the higher 80 MHz) bandwidth in the 160 MHz bandwidth in ascending order of frequency. When the bandwidth of the EHT TB PPDU is 320 MHz, the first UL SRP field indicates the SRP value in the first 160 MHz (i.e., the lower 160 MHz) bandwidth in the 320 MHz bandwidth in ascending order of frequency, and the second UL SRP field indicates the SRP value in the second 160 MHz (i.e., the higher 160 MHz) bandwidth in the 320 MHz bandwidth in ascending order of frequency.

[0267] Optionally, when the bandwidth of the EHT TB PPDU is 20 MHz, the value of the first UL SRP field is the same as the value of the second UL SRP field, and both the first UL SRP field and the second UL SRP field indicate the SRP value in the 20 MHz bandwidth.

[0268] Optionally, the first and second UL SRP fields may be any one of the UL SRP1, UL SRP2, UL SRP3, or UL SRP4 fields, where the first UL SRP field is different from the second UL SRP field. For example, the first UL SRP field may be the UL SRP1 field, the second UL SRP field may be the UL SRP2 field, and the other UL SRP fields (i.e., the UL SRP3 and UL SRP4 fields) may be reserved or used for other purposes (e.g., parameters for uplink multi-AP transmission, e.g., the number of APs, AP identifiers; or parameters for a hybrid automatic repeat request (HARQ), e.g., used as a retransmission indication or HARQ combination type). In another example, the first UL SRP field is the UL SRP3 field, the second UL SRP field is the UL SRP4 field, and the other UL SRP fields (i.e., UL SRP1 and UL SRP2 fields) are reserved or used for other purposes. In yet another example, the first UL SRP field is the UL SRP1 field, the second UL SRP field is the UL SRP3 field, and the other UL SRP fields (i.e., UL SRP2 and UL SRP4 fields) are reserved or used for other purposes. In yet another example, the first UL SRP field is the UL SRP2 field, the second UL SRP field is the UL SRP3 field, and the other UL SRP fields (i.e., UL SRP1 and UL SRP4 fields) are reserved or used for other purposes.

[0269] In this embodiment of the present invention, if the trigger frame indicates that the EHT station is scheduled to transmit only EHT TB PPDU, then only two UL SRP fields in the trigger frame (the other two UL SRP fields are reserved) are used to indicate the SRP values ​​in the lower and higher half of the total bandwidth, respectively. The EHT station copies the values ​​of the two UL SRP fields in the trigger frame to the two SRP fields in the U-SIG. This solves the problem of insufficient SRP fields in the U-SIG and reduces the indication overhead in the trigger frame. [Embodiment 5]

[0270] Embodiments 1 to 4 described above describe how to configure two SRP fields of U-SIG when one or more stations transmit EHT TB PPDU in different scenarios. Embodiment 5 of the present application mainly describes a space reuse method based on space reuse parameters in 802.11be.

[0271] In practical applications, Embodiment 5 of the present Application may be implemented by reference to any one of Embodiments 1 through 4, or independently. This is not limited to the present embodiments of the present Application.

[0272] In this embodiment of the present application, it can be understood that the first AP and the first STA belong to the same BSS, indicated as BSS1. The second AP and the second STA belong to a different BSS, indicated as BSS2. The first AP and the second AP are located within the OBSS formed by BSS1 and BSS2. Therefore, in order to reduce interference to the reception of the EHT TB PPDU by the first AP caused by the energy generated when the second AP transmits a parameterized spatial reuse transmission (PSRT) PPDU, the transmission power used when the second AP transmits the PSRT PPDU needs to be limited.

[0273] Optionally, in this embodiment of the present application, the second AP may receive information transmitted by the first AP and the first STA.

[0274] Please refer to Figure 13. Figure 13 is a schematic flowchart of a space reuse method according to one embodiment of the present invention. As shown in Figure 13, the space reuse method includes, but is not limited to, the following steps.

[0275] S501: The first AP transmits a parameterized spatial reuse reception (PSRR) PPDU containing a trigger frame. The trigger frame is used to schedule the first STA to transmit an EHT TB PPDU. The first STA receives the trigger frame accordingly.

[0276] It can be understood that, in addition to the trigger frame, the PSRR PPDU may contain other information. However, this embodiment of the application focuses on the trigger frame portion within the PSRR PPDU. Therefore, other information contained within the PSRR PPDU is not described in this embodiment of the application.

[0277] Specifically, a PSRR PPDU containing a trigger frame is used to schedule a station to perform uplink data transmission, for example, to transmit an uplink EHT TB PPDU. As shown in Figure 6a, the common information field of the trigger frame includes an uplink spatial reuse (UL Spatial Reuse) field. The uplink spatial reuse field may contain four 4-bit uplink spatial reuse parameter (UL SRP) fields, which represent the sum of the AP's transmission power and the maximum interference power received by the AP. The four UL SRP fields contained within the uplink spatial reuse field are the UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field. For implementations of the four UL SRP fields at different bandwidths, refer to any one of Embodiments 1 to 4, which will not be described in detail again here.

[0278] S502: The first STA transmits an EHT TB PPDU. In response, the first AP receives the EHT TB PPDU transmitted by the station.

[0279] In this embodiment of the present application, the "first AP" is the "AP" described in Embodiments 1 to 4, and the "first STA" in this embodiment of the present application is the "STA" described in Embodiments 1 to 4.

[0280] Specifically, for the implementation of step S502 in this embodiment of the present application, please refer to the implementation of step S103 in Embodiment 1. Details will not be explained again here. Alternatively, for the implementation of step S502 in this embodiment of the present application, please refer to the implementation of step S203 in Embodiment 2. Details will not be explained again here. Alternatively, for the implementation of step S502 in this embodiment of the present application, please refer to the implementation of step S303 in Embodiment 3. Details will not be explained again here. Alternatively, for the implementation of step S502 in this embodiment of the present application, please refer to the implementation of step S403 in Embodiment 4. Details will not be explained again here.

[0281] S503: The second AP determines the transmission power of the parameterized space reuse transmission PSRT PPDU based on the values ​​indicated by the SRP1 and SRP2 fields, respectively, contained within the U-SIG of the EHT TB PPDU, and / or the values ​​indicated by the four UL SRP fields, respectively, contained within the common information field of the trigger frame.

[0282] S504: The second AP transmits the PSRT PPDU based on the transmission power of the PSRT PPDU. The second STA receives the PSRT PPDU accordingly.

[0283] Specifically, the first AP and the second AP are located within the OBSS formed by BSS1 and BSS2. Therefore, the second AP can also receive the trigger frame transmitted to the first AP. Thus, after the first AP transmits a PSRR PPDU containing the trigger frame, the second AP receives the PSRR PPDU containing the trigger frame. The trigger frame contains four UL SRP fields, and the value indicated by one UL SRP field is equal to the sum of the transmission power of the first AP and the maximum interference power received by the first AP. The second AP can also receive an EHT TB PPDU transmitted by the first STA, and the U-SIG of the EHT TB PPDU contains SRP1 and SRP2 fields. The value indicated by SRP1 is equal to the sum of the transmission power of the first AP on the first subchannel and the maximum interference power received by the first AP. The value indicated by the SRP2 field is the sum of the transmission power of the first AP on the second subchannel and the maximum interference power received by the first AP. The bandwidth of the first subchannel and the bandwidth of the second subchannel are equal to half the bandwidth of the EHT TB PPDU, and the frequency of the first subchannel is lower than the frequency of the second subchannel.

[0284] After the second AP receives the PSRR PPDU and EHT TB PPDU (i.e., determines that the first STA has transmitted the EHT TB PPDU), the second AP calculates the transmission power used to transmit the PSRT PPDU based on the power at which the PSRR PPDU is received (i.e., the received power level, RPL), the values ​​indicated by the SRP1 and SRP2 fields, respectively, contained within the U-SIG, and / or the values ​​indicated by the four UL SRP fields, respectively. Based on the transmission power obtained through the calculation, the second AP transmits the PSRT PPDU. Accordingly, the second STA receives the PSRT PPDU and, in response to the PSRT PPDU, sends a response frame back to the second AP.

[0285] Please refer to Figure 14. Figure 14 is a sequence diagram of a space reuse method according to one embodiment of the present invention. It is assumed that AP1 and AP2 are located in the same OBSS, AP1 and STA1 belong to BSS1, and AP2 and STA2 belong to BSS2. As shown in Figure 14, AP1 (i.e., the first AP) transmits a PSRR PPDU containing a trigger frame. STA1 (i.e., the first STA), after receiving the PSRR PPDU, transmits an uplink EHT TB PPDU at a time interval (e.g., short interframe space) based on the indication of the trigger frame. Since AP1 and AP2 are located in the same OBSS, AP2 can receive the PSRR PPDU transmitted by AP1 and the EHT TB PPDU transmitted by STA. After receiving the PSRR PPDU and EHT TB PPDU, AP2 (i.e., the second AP) calculates the power used to transmit the PSRT PPDU based on the power (i.e., RPL) on which the PSRR PPDU is received and the two SRP values ​​and / or four UL SRP values ​​in the EHT TB PPDU. After detecting that the EHT TB PPDU has been transmitted, AP2 transmits the PSRT PPDU based on the power obtained through the calculation. After receiving the PSRT PPDU, STA2 (i.e., the second STA) transmits a block acknowledge frame at a time interval (e.g., in short interframe space) to acknowledge that STA2 has received the PSRT PPDU.

[0286] Optionally, the transmission power of the PSRT PPDU obtained by the second AP through calculation satisfies the following equation: PPDU transmission power (used by the second AP to transmit the PSRT PPDU) - log 10 (PSRT PPDU bandwidth / 20MHz) ≤ SRP - RPL(1 - 1)

[0287] log in equation (1-1) 10(PSRT PPDU Bandwidth / 20 MHz) indicates the bandwidth normalization factor. In Equation (1-1), SRP is the SRP value on the subchannel. In Equation (1-1), RPL is the combined transmission power at all receive antenna connectors at the PSRR PPDU bandwidth in the non-HE part of the trigger PPDU (PPDU including the trigger frame) or the non-EHT PPDU part (RPL is the combined transmission power at the receive antenna connectors at the PSRR PPDU bandwidth averaged over all antennas used to receive the PPDU, in the non-HE part of the HE PPDU preamble of the trigger PPDU). Bandwidth normalization has been performed on the values of SRP and PRL in Equation (1-1). Since the value indicated by the UL SRP field is equal to the sum of the transmission power of the AP (here, the first AP) and the maximum interference power received by the AP (here, the first AP), it should be understood that the maximum interference power received by the AP (here, the first AP) is determined by the value of the spatial reuse parameter (SRP).

[0288] Optionally, the second AP may obtain RPL by using the PSRR PPDU, without obtaining the UL SRP within the PSRR PPDU, but obtains the SRP by using the U-SIG of the EHT TB PPDU. Specifically, the second AP calculates the transmission power used to transmit the PSRT PPDU based on the power at which the PSRR PPDU is received (i.e., RPL), and the values indicated by the SRP1 field and the SRP2 field included in the U-SIG, respectively. Alternatively, the second AP may obtain both RPL and UL SRP by using the PSRR PPDU, and does not obtain the SRP within the U-SIG after determining that the EHT TB PPDU has been received. Specifically, the second AP calculates the transmission power used to transmit the PSRT PPDU based on the power at which the PSRR PPDU is received (i.e., RPL), and the values indicated by the four UL SRP fields, respectively.

[0289] Optionally, equation (1-1) above may be equivalent to equation (1-2) below. Normalized transmission power of the second AP ≤ Transmission power of the first AP + Maximum interference power received by the first AP - Power received by the second AP for the PSRR PPDU transmitted by the first AP (1-2)

[0290] The right-hand side of equation (1-2), that is, the transmission power of the first AP minus the power received by the second AP for the PSRR PPDU transmitted by the first AP, is equal to the path loss between the first AP and the second AP.

[0291] Therefore, equation (1-2) may be equivalent to equation (1-3) below. Normalized transmission power of the second AP ≤ Maximum interference power received by the first AP + Path loss between the first and second APs (1-3)

[0292] Equation (1-3) may be equivalent to the following equation (1-4). Normalized transmission power of the second AP - path loss between the first and second APs ≤ maximum interference power received by the first AP (1-4)

[0293] The left-hand side of equation (1-4), that is, the normalized transmission power of the second AP minus the path loss between the first and second APs, represents the interference to the first AP caused by the second AP. Therefore, equation (1-4) may be equivalent to equation (1-5) below: Interference to the first AP caused by the second AP ≤ Maximum interference power received by the first AP (1-5)

[0294] This embodiment of the present invention provides a space reuse method to enable compatibility between two SRP field cases within a U-SIG and an EHT TB PPDU, and it is found that the space reuse is implemented in accordance with the EHT standard. In this way, devices in a duplicate basic service set can perform transmissions simultaneously and improve transmission efficiency.

[0295] In an optional embodiment, the space reuse method provided herein may also be applied to a second STA. Figure 15 is another schematic flowchart of the space reuse method according to one embodiment of the present application. In this embodiment of the present application, it may be understood that the first AP and the first STA belong to the same BSS, indicated as BSS1. The second AP and the second STA belong to a different BSS, indicated as BSS2. The first AP and the second STA are located within the OBSS formed by BSS1 and BSS2. Therefore, the transmission power used when the second STA transmits the response frame needs to be limited in order to reduce interference to the reception of the EHT TB PPDU by the first AP, which is caused by the energy generated when the second STA transmits the response frame of the PSRT PPDU.

[0296] Optionally, in this embodiment of the present application, the second STA may receive information transmitted by the first AP and the first STA.

[0297] As shown in Figure 15, the methods for reusing space are not limited to the following steps:

[0298] S601: The first AP transmits a parameterized space reuse receive PSRR PPDU containing a trigger frame. The trigger frame is used to schedule the first STA to transmit an EHT TB PPDU. The first STA receives the trigger frame accordingly.

[0299] S602: The first STA transmits an EHT TB PPDU. In response, the first AP receives the EHT TB PPDU transmitted by the station.

[0300] Specifically, for the implementation of steps S601 and S602 in this embodiment of the present application, please refer to the implementation of steps S501 and S502 in the embodiment shown in Figure 13. Further details will not be explained here.

[0301] S603: The second AP transmits a PSRT PPDU. In response, the second STA receives the PSRT PPDU.

[0302] S604: The second STA determines the transmission power of the response frame in response to the PSRT PPDU based on the values ​​indicated by the SRP1 and SRP2 fields, respectively, contained within the U-SIG of the EHT TB PPDU, and / or the values ​​indicated by the four UL SRP fields, respectively, contained within the common information field of the trigger frame.

[0303] S605: The second STA transmits a response frame based on the transmission power of the response frame.

[0304] Specifically, for the implementation of steps S604 and S605 in this embodiment of the present application, please refer to the implementation of steps S503 and S504 in the embodiment shown in Figure 13. Details will not be explained again here. Please understand that the transmission power of the response frame in response to the PSRT PPDU in step S604 corresponds to the transmission power of the PSRT PPDU in step S503. For the method of determining the transmission power of the response frame in step S604, please refer to the method of determining the transmission power of the PSRT PPDU in step S503. Details will not be explained again here.

[0305] Optionally, the second AP may also be located within the OBSS formed by BSS1 and BSS2. Therefore, in order to reduce interference to the reception of the EHT TB PPDU by the first AP caused by the energy generated when the second STA transmits the response frame of the PSRT PPDU and the energy generated when the second AP transmits the PSRT PPDU, both the transmission power used when the second STA transmits the response frame and the transmission power used when the second AP transmits the PSRT PPDU must be limited. Thus, if the first AP, the second STA, and the second AP are all located within the OBSS formed by BSS1 and BSS2, before the second AP transmits the PSRT PPDU (i.e., before step S603), the second AP may determine the transmission power of the PSRT PPDU based on the values ​​indicated by the SRP1 and SRP2 fields, respectively, contained within the U-SIG of the EHT TB PPDU, and / or the values ​​indicated by the four UL SRP fields, respectively, contained within the common information field of the trigger frame. In this case, step S603 specifically involves transmitting the PSRT PPDU based on the transmission power of the PSRT PPDU.

[0306] This embodiment of the present invention provides a space reuse method to enable compatibility between two SRP field cases within a U-SIG and an EHT TB PPDU, and it is found that the space reuse is implemented in accordance with the EHT standard. In this way, devices in a duplicate basic service set can perform transmissions simultaneously and improve transmission efficiency.

[0307] The foregoing describes in detail the method provided in this application. To facilitate the implementation of the aforementioned solution in the embodiments of this application, embodiments of this application further provide a corresponding apparatus or device.

[0308] In this embodiment of the present application, the AP and STA may be divided into functional modules based on the examples of the methods described above. For example, functional modules may be obtained through divisions based on corresponding functions, or two or more functions may be integrated into a single processing module. The integrated module may be implemented in hardware form or in the form of a software functional module. Note that in this embodiment of the present application, the division into modules is merely an example and a logical functional division, and other divisions may be used in actual implementations. The communication device in this embodiment of the present application will be described in detail below with reference to Figures 16 to 19. The communication device is an access point or a station. Furthermore, the communication device may be a device within the AP or a device within the STA.

[0309] When an integrated unit is used, please refer to Figure 16. Figure 16 is a schematic diagram showing the structure of a communication device 1 according to one embodiment of the present invention. The communication device 1 may be an AP, or a chip within an AP, such as a Wi-Fi chip. As shown in Figure 16, the communication device 1 includes a transceiver unit 11 and optionally includes a processing unit 12.

[0310] In the first design, the transceiver unit 11 is configured to transmit a trigger frame, which is used to trigger a station to transmit an EHT TB PPDU. The transceiver unit 11 is further configured to receive an EHT TB PPDU transmitted by the station. The values ​​indicated by the space reuse parameters SRP1 and SRP2 fields in the universal signal field U-SIG of the EHT TB PPDU are determined based on the values ​​indicated by one or more uplink space reuse parameters UL SRP fields in the common information field of the trigger frame.

[0311] Optionally, the processing unit 12 is configured to generate trigger frames.

[0312] The communication device 1 in the first design may perform Embodiment 1 accordingly, and it should be understood that each of the aforementioned operations or functions of the units within the communication device 1 is used to implement the corresponding operation of the AP in Embodiment 1. For brevity, further details will not be described here.

[0313] In the second design, the transceiver unit 11 is configured to transmit a trigger frame, which is used to trigger a station to transmit an EHT TB PPDU, and the common information field of the trigger frame includes four UL SRP fields, two of which have the same value and the other two have the same value. The transceiver unit 11 is further configured to receive the EHT TB PPDU transmitted by the station, and the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the two UL SRP fields that have the same value, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the other two UL SRP fields that have the same value.

[0314] Optionally, the processing unit 12 is configured to generate trigger frames.

[0315] The communication device 1 in the second design may implement Embodiment 2 accordingly, and it should be understood that each of the aforementioned operations or functions of the units within the communication device 1 is used to implement the corresponding operation of the AP in Embodiment 2. For brevity, further details will not be described here.

[0316] In a third design, the transceiver unit 11 is configured to transmit a trigger frame, which is used to trigger a station to transmit an EHT TB PPDU, the trigger frame holding first indication information, the first indication information indicating the value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU. The transceiver unit 11 is further configured to receive the EHT TB PPDU transmitted by the station, the value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU is determined based on the first indication information.

[0317] Optionally, the processing unit 12 is configured to generate trigger frames.

[0318] The communication device 1 in the third design may implement Embodiment 3 accordingly, and it should be understood that each of the aforementioned operations or functions of the units within the communication device 1 is used to implement the corresponding operation of the AP in Embodiment 3. For brevity, further details will not be described here.

[0319] In the fourth design, the transceiver unit 11 is configured to transmit a trigger frame. The transceiver unit 11 is further configured to receive an EHT TB PPDU transmitted by the station, wherein the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the first UL SRP field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the second UL SRP field. The trigger frame holds second indication information, which indicates that the trigger frame is used to schedule a station to transmit only EHT TB PPDUs. The trigger frame's common information field includes a first UL SRP field and a second UL SRP field, where the first UL SRP field indicates the SRP value of the first bandwidth in the EHT TB PPDU bandwidth, and the second UL SRP field indicates the SRP value of the second bandwidth in the EHT TB PPDU bandwidth, where both the first and second bandwidths are half the EHT TB PPDU bandwidth, and the frequency of the first bandwidth is lower than the frequency of the second bandwidth.

[0320] Optionally, the processing unit 12 is configured to generate trigger frames.

[0321] The communication device 1 in the fourth design may implement Embodiment 4 accordingly, and it should be understood that the aforementioned operations or functions of the units within the communication device 1 are separately configured to implement the corresponding operations of the AP in Embodiment 4. For brevity, further details will not be described here.

[0322] Please refer to Figure 17. Figure 17 is a schematic diagram showing the structure of a communication device 2 according to one embodiment of the present invention. The communication device 2 may be an STA, or a chip within an STA, such as a Wi-Fi chip. As shown in Figure 17, the communication device 2 includes a transceiver unit 21 and optionally includes a processing unit 22.

[0323] In the first design, the transceiver unit 21 is configured to receive a trigger frame, which is used to trigger the communication device 2 to transmit an EHT TB PPDU. The transceiver unit 21 is further configured to transmit an EHT TB PPDU, and the values ​​indicated by the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU are determined based on the values ​​indicated by one or more UL SRP fields in the common information field of the trigger frame.

[0324] Optionally, the processing unit 22 includes a generation subunit 221 and a configuration subunit 222. The generation subunit 22 is configured to generate an EHT TB PPDU. The configuration subunit 222 is configured to set the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU based on the values ​​indicated by one or more UL SRP fields in the common information field of the trigger frame.

[0325] The communication device 2 in the first design may perform Embodiment 1 accordingly, and it should be understood that each of the aforementioned operations or functions of the units within the communication device 2 is used to implement the corresponding operation of the STA in Embodiment 1. For brevity, further details will not be described here.

[0326] In the second design, the transceiver unit 21 is configured to receive a trigger frame, which is used to trigger the communication device 2 to transmit an EHT TB PPDU, the common information field of the trigger frame containing four UL SRP fields, two of which have the same value and the other two have the same value. The transceiver unit 21 is further configured to transmit an EHT TB PPDU, the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the two UL SRP fields that have the same value, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the other two UL SRP fields that have the same value.

[0327] Optionally, the processing unit 22 includes a generation subunit 221 and a setting subunit 222. The generation subunit 22 is configured to generate an EHT TB PPDU. The setting subunit 222 is configured to set the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU to the value indicated by one of the UL SRP fields in the first of two groups, and to set the value indicated by the SRP2 field in the U-SIG to the value indicated by one of the UL SRP fields in the second of two groups.

[0328] The communication device 2 in the second design may implement Embodiment 2 accordingly, and it should be understood that each of the aforementioned operations or functions of the units within the communication device 2 is used to implement the corresponding operation of the STA in Embodiment 2. For brevity, further details will not be described here.

[0329] In the third design, the transceiver unit 21 is configured to receive a trigger frame, which is used to trigger the communication device 2 to transmit an EHT TB PPDU, the trigger frame holding first indication information, the first indication information indicating the value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU. The transceiver unit 21 is further configured to transmit an EHT TB PPDU, the value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU being determined based on the first indication information.

[0330] Optionally, the processing unit 22 includes a generation subunit 221 and a setting subunit 222. The generation subunit 22 is configured to generate an EHT TB PPDU. The setting subunit 222 is configured to set the values ​​of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU based on first indication information.

[0331] The communication device 2 in the third design may implement Embodiment 3 accordingly, and it should be understood that each of the aforementioned operations or functions of the units within the communication device 2 is used to implement the corresponding operation of the STA in Embodiment 3. For brevity, further details will not be described here.

[0332] In the fourth design, the transceiver unit 21 is configured to receive a trigger frame. The transceiver unit 21 is further configured to transmit an EHT TB PPDU, where the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the first UL SRP field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the second UL SRP field. The trigger frame holds second indication information, which indicates that the trigger frame is used to schedule a station to transmit only EHT TB PPDUs. The trigger frame's common information field includes a first UL SRP field and a second UL SRP field, where the first UL SRP field indicates the SRP value of the first bandwidth in the EHT TB PPDU bandwidth, and the second UL SRP field indicates the SRP value of the second bandwidth in the EHT TB PPDU bandwidth, where both the first and second bandwidths are half the EHT TB PPDU bandwidth, and the frequency of the first bandwidth is lower than the frequency of the second bandwidth.

[0333] Optionally, the processing unit 22 includes a generation subunit 221 and a setting subunit 222. The generation subunit 22 is configured to generate an EHT TB PPDU. The setting subunit 222 is configured to set the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU to the value indicated by the first UL SRP, and to set the value indicated by the SRP2 field in the U-SIG to the value indicated by the second UL SRP field.

[0334] The communication device 2 in the fourth design may implement Embodiment 4 accordingly, and it should be understood that the aforementioned operations or functions of the units within the communication device 2 are separately configured to implement the corresponding operations of the STA in Embodiment 4. For brevity, further details will not be described here.

[0335] Please refer to Figure 18. Figure 18 is a schematic diagram showing the structure of a communication device 3 according to one embodiment of the present application. The communication device 3 may be an AP or an STA. Furthermore, the communication device 3 may be a chip within an AP, or an STA, such as a Wi-Fi chip. As shown in Figure 18, the communication device 3 may include a determination unit 31 and a transceiver unit 32.

[0336] In the design, communication device 3 is an AP or a chip within an AP. The determination unit 31 is configured to determine the transmission power of the PSRT PPDU based on the values ​​indicated by the SRP1 and SRP2 fields, respectively, contained within the U-SIG of the EHT TB PPDU, and / or the values ​​indicated by the four UL SRP fields, respectively, contained within the common information field of the trigger frame. The transceiver unit 32 is configured to transmit the PSRT PPDU based on the transmission power of the PSRT PPDU.

[0337] Optionally, the transceiver unit 32 is further configured to receive a trigger frame, which includes four UL SRP fields. The value indicated by one UL SRP field is the sum of the transmission power of the first AP on one subchannel and the maximum interference power received by the first AP. The communication device 3 and the first AP are located within the same OBSS. The first AP refers to the AP that transmits the trigger frame.

[0338] Optionally, the transceiver unit 32 is further configured to receive an EHT TB PPDU, the U-SIG of the EHT TB PPDU containing SRP1 and SRP2 fields. The value indicated by the SRP1 field is the sum of the transmission power of the first AP on the first subchannel and the maximum interference power received by the first AP. The value indicated by the SRP2 field is the sum of the transmission power of the first AP on the second subchannel and the maximum interference power received by the first AP. The bandwidths of the first and second subchannels are equal to half the bandwidth of the EHT TB PPDU, and the frequency of the first subchannel is lower than the frequency of the second subchannel. The communication device 3 and the first AP are located within the same OBSS.

[0339] In this design, communication device 3 may perform the method shown in Figure 13 accordingly, and it should be understood that the aforementioned operation or function of the unit within communication device 3 is separately configured to implement the corresponding operation of the second AP in Figure 13. For brevity, the details will not be explained again here.

[0340] In an alternative design, the communication device 3 is an STA or a chip within an STA. The determination unit 31 is configured to determine the transmission power of the response frame in response to the PSRT PPDU based on the values ​​indicated by the SRP1 and SRP2 fields, respectively, contained within the U-SIG of the EHT TB PPDU, and / or the values ​​indicated by the four UL SRP fields, respectively, contained within the common information field of the trigger frame. The transceiver unit 32 is configured to transmit the response frame based on the transmission power of the response frame.

[0341] Optionally, the transceiver unit 32 is further configured to receive a trigger frame, which includes four UL SRP fields. The value indicated by one UL SRP field is the sum of the transmission power of the first AP on one subchannel and the maximum interference power received by the first AP. The communication device 3 and the first AP are located within the same OBSS. The first AP refers to the AP that transmits the trigger frame.

[0342] Optionally, the transceiver unit 32 is further configured to receive an EHT TB PPDU, the U-SIG of the EHT TB PPDU containing SRP1 and SRP2 fields. The value indicated by the SRP1 field is the sum of the transmission power of the first AP on the first subchannel and the maximum interference power received by the first AP. The value indicated by the SRP2 field is the sum of the transmission power of the first AP on the second subchannel and the maximum interference power received by the first AP. The bandwidths of the first and second subchannels are equal to half the bandwidth of the EHT TB PPDU, and the frequency of the first subchannel is lower than the frequency of the second subchannel. The communication device 3 and the first AP are located within the same OBSS.

[0343] Optionally, the transceiver unit 32 is further configured to receive the PSRT PPDU transmitted by the second AP.

[0344] In any of the aforementioned designs, the decision unit 31 may be a processing unit.

[0345] In this design, communication device 3 may perform the method shown in Figure 15 accordingly, and it should be understood that the aforementioned operation or function of the unit within communication device 3 is separately configured to implement the corresponding operation of the second STA in Figure 15. For brevity, the details will not be explained again here.

[0346] The above describes the AP and STA in the embodiments of the present application. The following describes possible product forms of the AP and STA. It should be understood that any product having the functions of the AP described in Figure 16, any product having the functions of the STA described in Figure 17, or any product having the functions of either the AP or STA described in Figure 18 is covered within the scope of the embodiments of the present application. It should be further understood that the following description is merely an example, and the product forms of the AP and STA in the embodiments of the present application are not limited thereto.

[0347] In possible product configurations, the AP and STA in the embodiments of this application can be implemented using a general-purpose bus architecture.

[0348] For ease of explanation, please refer to Figure 19. Figure 19 is a schematic diagram showing the structure of a communication device 1000 according to one embodiment of the present invention. The communication device 1000 may be an AP or STA, or a chip within an AP or STA. Figure 19 shows only the main components of the communication device 1000. In addition to the processor 1001 and transceiver 1002, the communication device may further include a memory 1004 and an input / output device (not shown in this figure).

[0349] The processor 1001 is primarily configured to process communication protocols and communication data, control communication equipment, execute software programs, and process software program data. The memory 1004 is primarily configured to store software programs and data. The transceiver 1002 may include a control circuit and an antenna. The control circuit is primarily configured to perform conversions between baseband signals and radio frequency signals and to process radio frequency signals. The antenna is primarily configured to transmit and receive radio frequency signals in the form of electromagnetic waves. Input / output devices, such as touchscreens, displays, or keyboards, are primarily configured to receive data entered by the user and output data to the user.

[0350] After the communication device is powered on, the processor 1001 can read the software program in memory 1004, interpret and execute the instructions of the software program, and process the data of the software program. If the data needs to be transmitted wirelessly, the processor 1001 performs baseband processing on the data to be transmitted and then outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal in the form of electromagnetic waves through the antenna. When the data is to be transmitted to the communication device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal to a baseband signal, and outputs the baseband signal to the processor 1001. The processor 1001 converts the baseband signal to data and processes this data.

[0351] In alternative implementations, radio frequency circuits and antennas may be located independently of the processor performing baseband processing. For example, in a distributed scenario, radio frequency circuits and antennas may be located remotely and independently of the communication equipment.

[0352] The processor 1001, transceiver 1002, and memory 1004 can be connected via a communication bus.

[0353] In the design, the communication device 1000 may be configured to perform the functions of the AP in Embodiment 1. The processor 1001 may be configured to generate the trigger frame to be transmitted in step S101 in Figure 7, and / or to perform other processing of the technology described herein. The transceiver 1002 may be configured to perform steps S101 and S104 in Figure 7, and / or to perform other processing of the technology described herein.

[0354] In an alternative design, the communication device 1000 may be configured to perform the functions of the STA in Embodiment 1, that is, the processor 1001 may be configured to generate the EHT TB PPDU transmitted in step S103 in Figure 7, and / or to perform other processing of the technology described herein. The transceiver 1002 may be configured to perform steps S102 and S103 in Figure 7, and / or to perform other processing of the technology described herein.

[0355] In the design, the communication device 1000 may be configured to perform the functions of the AP in Embodiment 2. The processor 1001 may be configured to generate the trigger frame transmitted in step S201 in Figure 9, and / or to perform other processing of the technology described herein. The transceiver 1002 may be configured to perform steps S201 and S204 in Figure 9, and / or to perform other processing of the technology described herein.

[0356] In an alternative design, the communication device 1000 may be configured to perform the functions of the STA in Embodiment 2, that is, the processor 1001 may be configured to generate the EHT TB PPDU transmitted in step S203 in Figure 9, and / or to perform other processing of the technology described herein. The transceiver 1002 may be configured to perform steps S202 and S203 in Figure 9, and / or to perform other processing of the technology described herein.

[0357] In the design, the communication device 1000 may be configured to perform the functions of the AP in Embodiment 3. The processor 1001 may be configured to generate the trigger frame transmitted in step S301 in Figure 10, and / or to perform other processing of the technology described herein. The transceiver 1002 may be configured to perform steps S301 and S304 in Figure 10, and / or to perform other processing of the technology described herein.

[0358] In an alternative design, the communication device 1000 may be configured to perform the functions of the STA in Embodiment 3, that is, the processor 1001 may be configured to generate the EHT TB PPDU transmitted in step S303 in Figure 10, and / or to perform other processing of the technology described herein. The transceiver 1002 may be configured to perform steps S302 and S303 in Figure 10, and / or to perform other processing of the technology described herein.

[0359] In the design, the communication device 1000 may be configured to perform the functions of the AP in Embodiment 4. The processor 1001 may be configured to generate the trigger frame transmitted in step S401 in Figure 12, and / or to perform other processing of the technology described herein. The transceiver 1002 may be configured to perform steps S401 and S404 in Figure 12, and / or to perform other processing of the technology described herein.

[0360] In an alternative design, the communication device 1000 may be configured to perform the functions of the STA in Embodiment 4, that is, the processor 1001 may be configured to generate the EHT TB PPDU transmitted in step S403 in Figure 12, and / or to perform other processing of the technology described herein. The transceiver 1002 may be configured to perform steps S402 and S403 in Figure 12, and / or to perform other processing of the technology described herein.

[0361] In the design, the communication device 1000 may be configured to perform the functions of the second AP in Embodiment 5. The processor 1001 may be configured to perform step S503 in Figure 13 and / or to perform another process of the technology described herein. The transceiver 1002 may be configured to perform step S504 in Figure 13 and / or to perform another process of the technology described herein.

[0362] In the design, the communication device 1000 may be configured to perform the functions of the second STA in Embodiment 5. The processor 1001 may be configured to perform step S604 in Figure 15 and / or to perform another process of the technology described herein. The transceiver 1002 may be configured to perform step S605 in Figure 15 and / or to perform another process of the technology described herein.

[0363] In any of the designs described above, the processor 1001 may include a transceiver configured to implement transmit and receive functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit configured to implement transmit and receive functions may be separate or integrated together. The transceiver circuit, interface, or interface circuit may be configured to read and write code / data. Alternatively, the transceiver circuit, interface, or interface circuit may be configured to transmit or transfer signals.

[0364] In any of the aforementioned designs, the processor 1001 may store instructions. These instructions may be computer programs. The computer programs are executed on the processor 1001, and as a result, the communication device 1000 can perform the method described in any of the embodiments of the method described above. The computer programs may be fixed within the processor 1001. In this case, the processor 1001 may be implemented in hardware.

[0365] In one implementation, the communication device 1000 may include a circuit, which may implement the transmit, receive, or communicate functions in the embodiments of the method described above. The processors and transceivers described herein may be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), and electronic devices. Alternatively, the processors and transceivers may be manufactured using various IC technologies, such as complementary metal oxide semiconductors (CMOS), n-metal oxide semiconductors (nMOS), positive-channel metal oxide semiconductors (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon germanium (SiGe), and gallium arsenide (GaAs).

[0366] The scope of communication devices described herein is not limited to those described herein, and the structure of communication devices is not limited by Figure 19. A communication device may be a standalone device or part of a larger device. For example, a communication device may be: (1) an independent integrated circuit (IC), chip, or chip system or subsystem; (2) A set of one or more ICs, which may optionally further include a storage component configured to store data and computer programs; (3) ASIC, for example, a modem; (4) Modules that can be embedded in another device; (5) Receivers, terminals, intelligent terminals, mobile phones, wireless devices, handheld devices, mobile units, in-vehicle devices, network devices, cloud devices or artificial intelligence devices, etc.; or (6) Another device, etc. That's fine.

[0367] In possible product configurations, the AP and STA in the embodiments of this application may be implemented by a general-purpose processor.

[0368] A general-purpose processor for implementing AP includes processing circuits and input / output interfaces that are internally connected to and communicate with the processing circuits.

[0369] In the design, a general-purpose processor may be configured to perform the functions of the AP in Embodiment 1. Specifically, the processing circuit may be configured to generate a trigger frame transmitted in step S101 in Figure 7, and / or to perform other processing of the technology described herein. The input / output interface may be configured to perform steps S101 and S104 in Figure 7, and / or to perform other processing of the technology described herein.

[0370] In the design, a general-purpose processor may be configured to perform the functions of the AP in Embodiment 2. Specifically, the processing circuit is configured to generate the trigger frame transmitted in step S201 in Figure 9 and / or to perform other processing of the techniques described herein. The input / output interface may be configured to perform steps S201 and S204 in Figure 9 and / or to perform other processing of the techniques described herein.

[0371] In the design, a general-purpose processor may be configured to perform the functions of the AP in Embodiment 3. Specifically, the processing circuit is configured to generate a trigger frame transmitted in step S301 in Figure 10 and / or to perform other processing of the technology described herein. The input / output interface may be configured to perform steps S301 and S304 in Figure 10 and / or to perform other processing of the technology described herein.

[0372] In the design, a general-purpose processor may be configured to perform the functions of the AP in Embodiment 4. Specifically, the processing circuit is configured to generate a trigger frame transmitted in step S401 in Figure 12 and / or to perform other processing of the techniques described herein. The input / output interface may be configured to perform steps S401 and S404 in Figure 12 and / or to perform other processing of the techniques described herein.

[0373] In the design, the general-purpose processor may be configured to perform the functions of the second AP in Embodiment 5. Specifically, the processing circuit is configured to perform step S503 in Figure 13 and / or to perform another processing of the technology described herein. The input / output interface may be configured to perform step S504 in Figure 13 and / or to perform another processing of the technology described herein.

[0374] A general-purpose processor for implementing STA includes a processing circuit and input / output interfaces that are internally connected to and communicate with the processing circuit.

[0375] In the design, a general-purpose processor may be configured to perform the functions of the STA in Embodiment 1. Specifically, the processing circuit is configured to generate the EHT TB PPDU transmitted in step S103 in Figure 7 and / or to perform other processing of the techniques described herein. The input / output interface may be configured to perform steps S102 and S103 in Figure 7 and / or to perform other processing of the techniques described herein.

[0376] In the design, a general-purpose processor may be configured to perform the functions of the STA in Embodiment 2. Specifically, the processing circuit is configured to generate the EHT TB PPDU transmitted in step S203 in Figure 9 and / or to perform other processing of the techniques described herein. The input / output interface may be configured to perform steps S202 and S203 in Figure 9 and / or to perform other processing of the techniques described herein.

[0377] In the design, a general-purpose processor may be configured to perform the functions of the STA in Embodiment 3. Specifically, the processing circuit is configured to generate the EHT TB PPDU transmitted in step S303 in Figure 10 and / or to perform other processing of the techniques described herein. The input / output interface may be configured to perform steps S302 and S303 in Figure 10 and / or to perform other processing of the techniques described herein.

[0378] In the design, a general-purpose processor may be configured to perform the functions of the STA in Embodiment 4. Specifically, the processing circuit is configured to generate the EHT TB PPDU transmitted in step S403 in Figure 12 and / or to perform other processing of the techniques described herein. The input / output interface may be configured to perform steps S402 and S403 in Figure 12 and / or to perform other processing of the techniques described herein.

[0379] In the design, the general-purpose processor may be configured to perform the functions of the second STA in Embodiment 5. Specifically, the processing circuit is configured to perform step S604 in Figure 15 and / or to perform another processing of the technology described herein. The input / output interface may be configured to perform step S605 in Figure 15 and / or to perform another processing of the technology described herein.

[0380] It should be understood that the various product forms of communication devices described above have any of the functions of an AP or STA in the embodiment of the method. Further details will not be provided here.

[0381] One embodiment of the present invention further provides a computer-readable storage medium. The computer-readable storage medium stores computer program code. When a processor executes the computer program code, the electronic device performs the method in any one of the embodiments described above.

[0382] One embodiment of the present invention further provides a computer program product. When the computer program product is executed on a computer, the computer becomes capable of performing the method in any one of the embodiments described above.

[0383] One embodiment of the present invention further provides a communication device, which may exist in the form of a chip. The structure of the device includes a processor and an interface circuit. The processor is configured to communicate with another device through the interface circuit, enabling the device to perform the method in any one of the embodiments described above.

[0384] One embodiment of the present application further provides a wireless communication system including an AP and an STA. The AP and STA may perform the method in any one of the embodiments described above.

[0385] The methods or algorithmic steps described in combination with the information disclosed herein may be implemented in hardware or by the execution of software instructions by a processor. Software instructions may include corresponding software modules. These software modules may be stored in random access memory (RAM), flash memory, erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), registers, hard disks, removable hard disks, compact disk read-only memory (CD-ROM), or any other form of storage medium known in the art. For example, by connecting the storage medium to a processor, the processor can read information from and write information to the storage medium. Naturally, the storage medium may be a component of the processor. The processor and storage medium may be located in an ASIC. In addition, the ASIC may be located within a core network interface device. Naturally, the processor and storage medium may exist as discrete components within the core network interface device.

[0386] Those skilled in the art will recognize that, in one or more of the above examples, the functions described herein can be implemented by hardware, software, firmware, or any combination thereof. When these functions are implemented by software, they may be stored in a computer-readable medium or transmitted as one or more instructions or codes within a computer-readable medium. The computer-readable medium includes computer-readable storage and communication media. The communication medium includes any medium that facilitates the transmission of computer programs from one location to another. The storage medium may be any available medium accessible to a general-purpose or dedicated computer.

[0387] The aforementioned specific implementations describe the purpose, technical solutions, and beneficial effects of the Application in more detail. It should be understood that these descriptions represent only specific implementations of the Application and are not intended to limit the scope of protection. Any modifications, equivalent replacements, or improvements based on the Technical Solutions of the Application shall be included within the scope of protection. [Other possible items] [Item 1] A method for determining a spatial reuse parameter field within a physical layer protocol data unit, The access point AP transmits a trigger frame, where the trigger frame is used to trigger the station to transmit an EHT TB PPDU, and the special user information fields of the trigger frame include a first field and a second field; and In the step where the AP receives the EHT TB PPDU transmitted by the station, the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is set to the value indicated by the first field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is set to the value indicated by the second field. A method that includes [a certain feature]. [Item 2] A method for determining a spatial reuse parameter field within a physical layer protocol data unit, The stage in which station STA receives a trigger frame, where the trigger frame is used to trigger the station to transmit an EHT TB PPDU, and the special user information fields of the trigger frame include a first field and a second field; and In the step where the STA transmits the EHT TB PPDU, the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is set to the value indicated by the first field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is set to the value indicated by the second field. A method that includes [a certain feature]. [Item 3] The method according to item 1 or 2, wherein the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, two of the four UL SRP fields having the same value and the other two having the same value; and the value indicated by the first field is equal to the value indicated by either of the two UL SRP fields having the same value, and the value indicated by the second field is equal to the value indicated by either of the other two UL SRP fields having the same value. [Item 4] The method according to any one of items 1 to 3, wherein the special user information field includes an association identifier 12 field, and the value of the association identifier 12 field is a special value. [Item 5] The method according to any one of items 1 to 4, wherein the bandwidth of the EHT TB PPDU is one of 80 MHz, 160 MHz, and 320 MHz. [Item 6] The method according to item 3, wherein the four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, the values ​​indicated by UL SRP1 field and UL SRP2 field are the same, and the values ​​indicated by UL SRP3 field and UL SRP4 field are the same. [Item 7] The method according to item 3 or 6, wherein the bandwidth of the EHT TB PPDU is 320 MHz, and each of the four UL SRP fields represents the SRP values ​​of four 40 MHz subchannels on a primary 160 MHz channel in ascending order of frequency, and each of the SRP values ​​of four 40 MHz subchannels on a secondary 160 MHz channel is the same as the SRP values ​​of the four 40 MHz subchannels on the primary 160 MHz channel. [Item 8] The four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, and the values ​​indicated by the four UL SRP fields are the same; and The method according to item 3 or 6, wherein, if the bandwidth of the EHT TB PPDU is 20 MHz, the value indicated by the SRP1 field and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU are equal to the value indicated by any one of the four UL SRP fields. [Item 9] The four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, the values ​​indicated by UL SRP1 field and UL SRP3 field are the same, and the values ​​indicated by UL SRP2 field and UL SRP4 field are the same; and If the bandwidth of the EHT TB PPDU is 40 MHz, then the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP1 field or the value indicated by the UL SRP3 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP2 field or the value indicated by the UL SRP4 field. The method described in item 3 or 6. [Item 10] A method for determining a spatial reuse parameter field within a physical layer protocol data unit, The access point AP transmits a trigger frame, where the trigger frame is used to trigger the station to transmit an EHT TB PPDU, and the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, where two of the four UL SRP fields have the same value and the other two have the same value; and Steps in which the AP receives the EHT TB PPDU transmitted by the station, wherein the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the two UL SRP fields which show the same value, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the other two UL SRP fields which show the same value. A method that includes [a certain feature]. [Item 11] A method for determining a spatial reuse parameter field within a physical layer protocol data unit, The stage in which station STA receives a trigger frame, where the trigger frame is used to trigger the station to transmit an EHT TB PPDU, and the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, where two of the four UL SRP fields have the same value and the other two have the same value; and In the step where the STA transmits the EHT TB PPDU, the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the two UL SRP fields which show the same value, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the other two UL SRP fields which show the same value. A method that includes [a certain feature]. [Item 12] The method according to item 10 or 11, wherein the bandwidth of the EHT TB PPDU is one of 80 MHz, 160 MHz, and 320 MHz. [Item 13] The method according to any one of items 10 to 12, wherein the four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, the values ​​indicated by UL SRP1 field and UL SRP2 field are the same, and the values ​​indicated by UL SRP3 field and UL SRP4 field are the same. [Item 14] The method according to any one of items 10 to 13, wherein the bandwidth of the EHT TB PPDU is 320 MHz, and each of the four UL SRP fields represents the SRP values ​​of four 40 MHz subchannels on a primary 160 MHz channel in ascending order of frequency, and each of the SRP values ​​of four 40 MHz subchannels on a secondary 160 MHz channel is the same as the SRP values ​​of the four 40 MHz subchannels on the primary 160 MHz channel. [Item 15] The four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, and the values ​​indicated by the four UL SRP fields are the same; and The method according to any one of items 10 to 14, wherein, if the bandwidth of the EHT TB PPDU is 20 MHz, the value indicated by the SRP1 field and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU are equal to the value indicated by any one of the four UL SRP fields. [Item 16] The four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, the values ​​indicated by UL SRP1 field and UL SRP3 field are the same, and the values ​​indicated by UL SRP2 field and UL SRP4 field are the same; and If the bandwidth of the EHT TB PPDU is 40 MHz, then the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP1 field or the value indicated by the UL SRP3 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP2 field or the value indicated by the UL SRP4 field. The method described in any one of items 10 through 14. [Item 17] A method for determining a spatial reuse parameter field within a physical layer protocol data unit, The access point AP sends a trigger frame, which is used to trigger the station to send an ultra-high throughput trigger-based physical layer protocol data unit (EHT TB PPDU); and In the step where the AP receives the EHT TB PPDU transmitted by the station, the values ​​indicated by the spatial reuse parameters SRP1 and SRP2 fields in the universal signal field U-SIG of the EHT TB PPDU are determined based on the values ​​indicated by one or more uplink spatial reuse parameters UL SRP fields in the common information field of the trigger frame. A method that includes [a certain feature]. [Item 18] A method for determining a spatial reuse parameter field within a physical layer protocol data unit, The stage in which station STA receives a trigger frame, said trigger frame is used to trigger the station to transmit an EHT TB PPDU; and In the step where the STA transmits the EHT TB PPDU, the values ​​indicated by the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU are determined based on the values ​​indicated by one or more UL SRP fields in the common information field of the trigger frame. A method that includes [a certain feature]. [Item 19] The common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, the four UL SRP fields being UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, and the values ​​indicated by the four UL SRP fields are the same; and The method according to item 17 or 18, wherein, if the bandwidth of the EHT TB PPDU is 20 MHz, the value indicated by the SRP1 field and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU are equal to the value indicated by any one of the four UL SRP fields. [Item 20] The common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, the four UL SRP fields being UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field; and When the bandwidth of the EHT TB PPDU is 40 MHz, the UL SRP1 field and the UL SRP3 field each indicate the SRP value of the first 20 MHz subchannel on the 40 MHz channel in ascending order of frequency, and the values ​​indicated by the UL SRP1 field and the UL SRP3 field are the same; and The UL SRP2 field and the UL SRP4 field each indicate the SRP value of the second 20 MHz subchannel on the 40 MHz channel in ascending order of frequency, and the values ​​indicated by the UL SRP2 field and the UL SRP4 field are the same; and The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP1 field or the value indicated by the UL SRP3 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP2 field or the value indicated by the UL SRP4 field. The method described in item 17 or 18. [Item 21] The common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, the four UL SRP fields being UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field; and If the bandwidth of the EHT TB PPDU is 80 MHz, then each of the four UL SRP fields represents the SRP value of four 20 MHz subchannels on an 80 MHz channel in ascending order of frequency; or If the bandwidth of the EHT TB PPDU is 160 MHz, then each of the four UL SRP fields represents the SRP values ​​of four 40 MHz subchannels on a 160 MHz channel in ascending order of frequency; and The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the minimum value indicated by the UL SRP1 field and the UL SRP2 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the minimum value indicated by the UL SRP3 field and the UL SRP4 field. The method described in item 17 or 18. [Item 22] The common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, the four UL SRP fields being UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field; and If the bandwidth of the EHT TB PPDU is 320 MHz, then each of the four UL SRP fields represents the SRP values ​​of four 40 MHz subchannels on a primary 160 MHz channel in ascending order of frequency, and each of the SRP values ​​of four 40 MHz subchannels on a secondary 160 MHz channel is the same as the SRP values ​​of the four 40 MHz subchannels on the primary 160 MHz channel; and The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the minimum value indicated by the UL SRP1 field and the UL SRP2 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the minimum value indicated by the UL SRP3 field and the UL SRP4 field. The method described in item 17 or 18. [Item 23] A communication device comprising a processor and a transceiver, wherein the transceiver is configured to transmit and receive PPDUs, and the processor is configured to execute program instructions to enable the communication device to perform the method described in any one of items 1 to 9. [Item 24] A communication device comprising a processor and a transceiver, wherein the transceiver is configured to transmit and receive PPDUs, and the processor is configured to execute program instructions to enable the communication device to perform the method described in any one of items 10 to 16. [Item 25] A processing unit configured to generate a trigger frame, wherein the trigger frame is used to trigger a station to transmit an ultra-high throughput trigger-based physical layer protocol data unit EHT TB PPDU; and A transceiver unit configured to transmit the trigger frame, wherein the transceiver unit is further configured to receive the EHT TB PPDU transmitted by the station. Equipped with, here, The values ​​indicated by the spatial reuse parameters SRP1 and SRP2 fields in the universal signal field U-SIG of the EHT TB PPDU are determined based on the values ​​indicated by one or more uplink spatial reuse parameters UL SRP fields in the common information field of the trigger frame. Communication device. [Item 26] A communication device, A transceiver unit configured to receive a trigger frame, wherein the trigger frame is used to trigger the communication device to transmit an EHT TB PPDU; and A processing unit configured to generate the EHT TB PPDU, wherein the values ​​indicated by the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU are determined based on the values ​​indicated by one or more UL SRP fields in the common information field of the trigger frame. Equipped with, The transceiver unit is further configured to transmit the EHT TB PPDU. Communication device. [Item 27] The common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, the four UL SRP fields being UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, and the values ​​indicated by the four UL SRP fields are the same; and The communication device according to item 25 or 26, wherein, if the bandwidth of the EHT TB PPDU is 20 MHz, the value indicated by the SRP1 field and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU are equal to the value indicated by any one of the four UL SRP fields. [Item 28] The common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, the four UL SRP fields being UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field; and When the bandwidth of the EHT TB PPDU is 40 MHz, the UL SRP1 field and the UL SRP3 field each indicate the SRP value of the first 20 MHz subchannel on the 40 MHz channel in ascending order of frequency, and the values ​​indicated by the UL SRP1 field and the UL SRP3 field are the same; and The UL SRP2 field and the UL SRP4 field each indicate the SRP value of the second 20 MHz subchannel on the 40 MHz channel in ascending order of frequency, and the values ​​indicated by the UL SRP2 field and the UL SRP4 field are the same; and The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP1 field or the value indicated by the UL SRP3 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP2 field or the value indicated by the UL SRP4 field. Communication device as described in item 25 or 26. [Item 29] The common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, the four UL SRP fields being UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field; and If the bandwidth of the EHT TB PPDU is 80 MHz, then each of the four UL SRP fields represents the SRP value of four 20 MHz subchannels on an 80 MHz channel in ascending order of frequency; or If the bandwidth of the EHT TB PPDU is 160 MHz, then each of the four UL SRP fields represents the SRP values ​​of four 40 MHz subchannels on a 160 MHz channel in ascending order of frequency; and The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the minimum value indicated by the UL SRP1 field and the UL SRP2 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the minimum value indicated by the UL SRP3 field and the UL SRP4 field. Communication device as described in item 25 or 26. [Item 30] The common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, the four UL SRP fields being UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field; and If the bandwidth of the EHT TB PPDU is 320 MHz, then each of the four UL SRP fields represents the SRP values ​​of four 40 MHz subchannels on a primary 160 MHz channel in ascending order of frequency, and each of the SRP values ​​of four 40 MHz subchannels on a secondary 160 MHz channel is the same as the SRP values ​​of the four 40 MHz subchannels on the primary 160 MHz channel; and The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the minimum value indicated by the UL SRP1 field and the UL SRP2 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the minimum value indicated by the UL SRP3 field and the UL SRP4 field. Communication device as described in item 25 or 26. [Item 31] A processing unit configured to generate a trigger frame, wherein the trigger frame is used to trigger a station to transmit an EHT TB PPDU, and the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, where two of the four UL SRP fields have the same value and the other two have the same value; and A transceiver unit configured to transmit the trigger frame, wherein the transceiver unit is further configured to receive the EHT TB PPDU transmitted by the station. Equipped with, here, The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the two UL SRP fields that show the same value, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the other two UL SRP fields that show the same value. Communication device. [Item 32] A transceiver unit configured to receive a trigger frame, wherein the trigger frame is used to trigger a station to transmit an EHT TB PPDU, and the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, where two of the four UL SRP fields have the same value and the other two have the same value; and Processing unit configured to generate the aforementioned EHT TB PPDU Equipped with, here, The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the two UL SRP fields that show the same value, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the other two UL SRP fields that show the same value. The transceiver unit is further configured to transmit the EHT TB PPDU. Communication device. [Item 33] The communication device according to item 31 or 32, wherein the bandwidth of the EHT TB PPDU is one of 80 MHz, 160 MHz, and 320 MHz. [Item 34] The communication device according to any one of items 31 to 33, wherein the four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, the values ​​indicated by the UL SRP1 field and the UL SRP2 field are the same, and the values ​​indicated by the UL SRP3 field and the UL SRP4 field are the same. [Item 35] The communication device according to any one of items 31 to 34, wherein the bandwidth of the EHT TB PPDU is 320 MHz, and each of the four UL SRP fields represents the SRP values ​​of four 40 MHz subchannels on a primary 160 MHz channel in ascending order of frequency, and each of the SRP values ​​of four 40 MHz subchannels on a secondary 160 MHz channel is the same as the SRP values ​​of the four 40 MHz subchannels on the primary 160 MHz channel. [Item 36] The four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, and the values ​​indicated by the four UL SRP fields are the same; and The communication device according to any one of items 32 to 35, wherein the bandwidth of the EHT TB PPDU is 20 MHz, and the value indicated by the SRP1 field and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU are equal to the value indicated by any one of the four UL SRP fields. [Item 37] The four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, the values ​​indicated by UL SRP1 field and UL SRP3 field are the same, and the values ​​indicated by UL SRP2 field and UL SRP4 field are the same; and If the bandwidth of the EHT TB PPDU is 40 MHz, then the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP1 field or the value indicated by the UL SRP3 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP2 field or the value indicated by the UL SRP4 field. A communication device as described in any one of items 32 to 35. [Item 38] A computer-readable storage medium storing program instructions, wherein when the program instructions are executed on a computer, the computer is able to perform the method described in any one of items 1 to 22. [Item 39] A computer program product comprising instructions, wherein when the instructions are executed on a computer, the computer is able to perform the method described in any one of items 1 to 22.

Claims

1. A method for determining a spatial reuse parameter field within a physical layer protocol data unit, The Access Point (AP) transmits a trigger frame, which is used to trigger a station to transmit an EHT TB PPDU, and the special user information fields of the trigger frame include a first field and a second field; and In the step where the AP receives the EHT TB PPDU transmitted by the station, the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is set to the value indicated by the first field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is set to the value indicated by the second field. A method that includes [a certain feature].

2. A method for determining a spatial reuse parameter field within a physical layer protocol data unit, The stage in which a station (STA) receives a trigger frame, the trigger frame being used to trigger the station to transmit an EHT TB PPDU, and the special user information fields of the trigger frame include a first field and a second field; and In the step where the STA transmits the EHT TB PPDU, the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is set to the value indicated by the first field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is set to the value indicated by the second field. A method that includes [a certain feature].

3. The method according to claim 1 or 2, wherein the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, two of the four UL SRP fields having the same value and the other two having the same value; and the value indicated by the first field is equal to the value indicated by either of the two UL SRP fields having the same value, and the value indicated by the second field is equal to the value indicated by either of the other two UL SRP fields having the same value.

4. The method according to any one of claims 1 to 3, wherein the special user information field includes an association identifier 12 field, and the value of the association identifier 12 field is a special value.

5. The method according to any one of claims 1 to 4, wherein the bandwidth of the EHT TB PPDU is one of 80 MHz, 160 MHz, and 320 MHz.

6. The method according to claim 3, wherein the four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, the values ​​indicated by UL SRP1 field and UL SRP2 field are the same, and the values ​​indicated by UL SRP3 field and UL SRP4 field are the same.

7. The method according to claim 3 or 6, wherein the bandwidth of the EHT TB PPDU is 320 MHz, and each of the four UL SRP fields represents the SRP values ​​of four 40 MHz subchannels on a primary 160 MHz channel in ascending order of frequency, and each of the SRP values ​​of four 40 MHz subchannels on a secondary 160 MHz channel is the same as the SRP values ​​of the four 40 MHz subchannels on the primary 160 MHz channel.

8. The four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, and the values ​​indicated by the four UL SRP fields are the same; and The method according to claim 3 or 6, wherein, when the bandwidth of the EHT TB PPDU is 20 MHz, the value indicated by the SRP1 field and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU are equal to the value indicated by any one of the four UL SRP fields.

9. The four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, and the values ​​indicated by UL SRP1 field and UL SRP3 field are the same, and the values ​​indicated by UL SRP2 field and UL SRP4 field are the same; and If the bandwidth of the EHT TB PPDU is 40 MHz, then the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP1 field or the value indicated by the UL SRP3 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP2 field or the value indicated by the UL SRP4 field. The method according to claim 3 or 6.

10. A method for determining a spatial reuse parameter field within a physical layer protocol data unit, The Access Point (AP) transmits a trigger frame, where the trigger frame is used to trigger a station to transmit an EHT TB PPDU, and the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, where two of the four UL SRP fields have the same value and the other two have the same value; and Steps in which the AP receives the EHT TB PPDU transmitted by the station, wherein the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the two UL SRP fields which show the same value, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the other two UL SRP fields which show the same value. A method that includes [a certain feature].

11. A method for determining a spatial reuse parameter field within a physical layer protocol data unit, The stage in which a station (STA) receives a trigger frame, the trigger frame being used to trigger the station to transmit an EHT TB PPDU, the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, two of the four UL SRP fields having the same value and the other two having the same value; and In the step where the STA transmits the EHT TB PPDU, the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the two UL SRP fields which show the same value, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the other two UL SRP fields which show the same value. A method that includes [a certain feature].

12. The method according to claim 10 or 11, wherein the bandwidth of the EHT TB PPDU is one of 80 MHz, 160 MHz, and 320 MHz.

13. The method according to any one of claims 10 to 12, wherein the four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, the values ​​indicated by UL SRP1 field and UL SRP2 field are the same, and the values ​​indicated by UL SRP3 field and UL SRP4 field are the same.

14. The method according to any one of claims 10 to 13, wherein the bandwidth of the EHT TB PPDU is 320 MHz, the four UL SRP fields each represent the SRP values ​​of four 40 MHz subchannels on a primary 160 MHz channel in ascending order of frequency, and the SRP values ​​of the four 40 MHz subchannels on a secondary 160 MHz channel are each the same as the SRP values ​​of the four 40 MHz subchannels on the primary 160 MHz channel.

15. The four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, and the values ​​indicated by the four UL SRP fields are the same; and The method according to any one of claims 10 to 14, wherein, when the bandwidth of the EHT TB PPDU is 20 MHz, the value indicated by the SRP1 field and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU are equal to the value indicated by any one of the four UL SRP fields.

16. The four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, and the values ​​indicated by UL SRP1 field and UL SRP3 field are the same, and the values ​​indicated by UL SRP2 field and UL SRP4 field are the same; and If the bandwidth of the EHT TB PPDU is 40 MHz, then the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP1 field or the value indicated by the UL SRP3 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP2 field or the value indicated by the UL SRP4 field. The method according to any one of claims 10 to 14.

17. A method for determining a spatial reuse parameter field within a physical layer protocol data unit, The access point (AP) transmits a trigger frame, which is used to trigger a station to transmit an ultra-high throughput trigger-based physical layer protocol data unit (EHT TB PPDU); and Step 1: The AP receives the EHT TB PPDU transmitted by the station, where the values ​​indicated by the spatial reuse parameters SRP1 and SRP2 fields in the universal signal field U-SIG of the EHT TB PPDU are determined based on the values ​​indicated by one or more uplink spatial reuse parameters UL SRP fields in the common information field of the trigger frame. A method that includes [a certain feature].

18. A method for determining a spatial reuse parameter field within a physical layer protocol data unit, The stage in which a station (STA) receives a trigger frame, which is used to trigger the station to transmit an EHT TB PPDU; and In the step where the STA transmits the EHT TB PPDU, the values ​​indicated by the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU are determined based on the values ​​indicated by one or more UL SRP fields in the common information field of the trigger frame. A method that includes [a certain feature].

19. The common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, the four UL SRP fields being UL SRP1, UL SRP2, UL SRP3, and UL SRP4, and the values ​​indicated by the four UL SRP fields are the same; and The method according to claim 17 or 18, wherein, when the bandwidth of the EHT TB PPDU is 20 MHz, the value indicated by the SRP1 field and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU are equal to the value indicated by any one of the four UL SRP fields.

20. The common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, the four UL SRP fields being UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field; and When the bandwidth of the EHT TB PPDU is 40 MHz, the UL SRP1 field and the UL SRP3 field each indicate the SRP value of the first 20 MHz subchannel on the 40 MHz channel in ascending order of frequency, and the values ​​indicated by the UL SRP1 field and the UL SRP3 field are the same; and The UL SRP2 field and the UL SRP4 field each indicate the SRP value of the second 20 MHz subchannel on the 40 MHz channel in ascending order of frequency, and the values ​​indicated by the UL SRP2 field and the UL SRP4 field are the same; and The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP1 field or the value indicated by the UL SRP3 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP2 field or the value indicated by the UL SRP4 field. The method according to claim 17 or 18.

21. The common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, the four UL SRP fields being UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field; and If the bandwidth of the EHT TB PPDU is 80 MHz, then each of the four UL SRP fields represents the SRP values ​​of four 20 MHz subchannels on the 80 MHz channel in ascending order of frequency; or If the bandwidth of the EHT TB PPDU is 160 MHz, then each of the four UL SRP fields represents the SRP values ​​of four 40 MHz subchannels on the 160 MHz channel in ascending order of frequency; and The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the minimum value indicated by the UL SRP1 field and the UL SRP2 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the minimum value indicated by the UL SRP3 field and the UL SRP4 field. The method according to claim 17 or 18.

22. The common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, the four UL SRP fields being UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field; and When the bandwidth of the EHT TB PPDU is 320 MHz, each of the four UL SRP fields represents the SRP values ​​of four 40 MHz subchannels on a primary 160 MHz channel in ascending order of frequency, and each of the SRP values ​​of four 40 MHz subchannels on a secondary 160 MHz channel is the same as the SRP values ​​of the four 40 MHz subchannels on the primary 160 MHz channel; and The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the minimum value indicated by the UL SRP1 field and the UL SRP2 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the minimum value indicated by the UL SRP3 field and the UL SRP4 field. The method according to claim 17 or 18.

23. A communication device comprising a processor and a transceiver, wherein the transceiver is configured to transmit and receive PPDUs, and the processor is configured to execute program instructions to enable the communication device to perform the method according to any one of claims 1 to 9.

24. A communication device comprising a processor and a transceiver, wherein the transceiver is configured to transmit and receive PPDUs, and the processor is configured to execute program instructions to enable the communication device to perform the method according to any one of claims 10 to 16.

25. A processing unit configured to generate a trigger frame, wherein the trigger frame is used to trigger a station to transmit an ultra-high throughput trigger-based physical layer protocol data unit (EHT TB PPDU); and A transceiver unit configured to transmit the trigger frame, wherein the transceiver unit is further configured to receive the EHT TB PPDU transmitted by the station. Equipped with, here, The values ​​indicated by the spatial reuse parameters SRP1 and SRP2 fields in the universal signal field U-SIG of the EHT TB PPDU are determined based on the values ​​indicated by one or more uplink spatial reuse parameters UL SRP fields in the common information field of the trigger frame. Communication device.

26. A communication device, A transceiver unit configured to receive a trigger frame, wherein the trigger frame is used to trigger the communication device to transmit an EHT TB PPDU; and A processing unit configured to generate the EHT TB PPDU, wherein the values ​​indicated by the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU are determined based on the values ​​indicated by one or more UL SRP fields in the common information field of the trigger frame. Equipped with, here, The transceiver unit is further configured to transmit the EHT TB PPDU. Communication device.

27. The common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, the four UL SRP fields being UL SRP1, UL SRP2, UL SRP3, and UL SRP4, and the values ​​indicated by the four UL SRP fields are the same; and The communication device according to claim 25 or 26, wherein, when the bandwidth of the EHT TB PPDU is 20 MHz, the value indicated by the SRP1 field and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU are equal to the value indicated by any one of the four UL SRP fields.

28. The common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, the four UL SRP fields being UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field; and When the bandwidth of the EHT TB PPDU is 40 MHz, the UL SRP1 field and the UL SRP3 field each indicate the SRP value of the first 20 MHz subchannel on the 40 MHz channel in ascending order of frequency, and the values ​​indicated by the UL SRP1 field and the UL SRP3 field are the same; and The UL SRP2 field and the UL SRP4 field each indicate the SRP value of the second 20 MHz subchannel on the 40 MHz channel in ascending order of frequency, and the values ​​indicated by the UL SRP2 field and the UL SRP4 field are the same; and The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP1 field or the value indicated by the UL SRP3 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP2 field or the value indicated by the UL SRP4 field. The communication device according to claim 25 or 26.

29. The common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, the four UL SRP fields being UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field; and If the bandwidth of the EHT TB PPDU is 80 MHz, then each of the four UL SRP fields represents the SRP values ​​of four 20 MHz subchannels on the 80 MHz channel in ascending order of frequency; or If the bandwidth of the EHT TB PPDU is 160 MHz, then each of the four UL SRP fields represents the SRP values ​​of four 40 MHz subchannels on the 160 MHz channel in ascending order of frequency; and The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the minimum value indicated by the UL SRP1 field and the UL SRP2 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the minimum value indicated by the UL SRP3 field and the UL SRP4 field. The communication device according to claim 25 or 26.

30. The common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, the four UL SRP fields being UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field; and When the bandwidth of the EHT TB PPDU is 320 MHz, each of the four UL SRP fields represents the SRP values ​​of four 40 MHz subchannels on a primary 160 MHz channel in ascending order of frequency, and each of the SRP values ​​of four 40 MHz subchannels on a secondary 160 MHz channel is the same as the SRP values ​​of the four 40 MHz subchannels on the primary 160 MHz channel; and The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the minimum value indicated by the UL SRP1 field and the UL SRP2 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the minimum value indicated by the UL SRP3 field and the UL SRP4 field. The communication device according to claim 25 or 26.

31. A processing unit configured to generate a trigger frame, wherein the trigger frame is used to trigger a station to transmit an EHT TB PPDU, and the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, where two of the four UL SRP fields have the same value and the other two have the same value; and A transceiver unit configured to transmit the trigger frame, wherein the transceiver unit is further configured to receive the EHT TB PPDU transmitted by the station. Equipped with, here, The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the two UL SRP fields which show the same value, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the other two UL SRP fields which show the same value. Communication device.

32. A transceiver unit configured to receive a trigger frame, wherein the trigger frame is used to trigger a station to transmit an EHT TB PPDU, and the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, where two of the four UL SRP fields have the same value and the other two have the same value; and Processing unit configured to generate the aforementioned EHT TB PPDU Equipped with, here, The value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the two UL SRP fields which show the same value, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by either of the other two UL SRP fields which show the same value. The transceiver unit is further configured to transmit the EHT TB PPDU. Communication device.

33. The communication device according to claim 31 or 32, wherein the bandwidth of the EHT TB PPDU is one of 80 MHz, 160 MHz, and 320 MHz.

34. The communication device according to any one of claims 31 to 33, wherein the four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, the values ​​indicated by UL SRP1 field and UL SRP2 field are the same, and the values ​​indicated by UL SRP3 field and UL SRP4 field are the same.

35. The communication device according to any one of claims 31 to 34, wherein the bandwidth of the EHT TB PPDU is 320 MHz, the four UL SRP fields each represent the SRP values ​​of four 40 MHz subchannels on a primary 160 MHz channel in ascending order of frequency, and the SRP values ​​of the four 40 MHz subchannels on a secondary 160 MHz channel are each the same as the SRP values ​​of the four 40 MHz subchannels on the primary 160 MHz channel.

36. The four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, and the values ​​indicated by the four UL SRP fields are the same; and The communication device according to any one of claims 32 to 35, wherein, when the bandwidth of the EHT TB PPDU is 20 MHz, the value indicated by the SRP1 field and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU are equal to the value indicated by any one of the four UL SRP fields.

37. The four UL SRP fields are UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field, and the values ​​indicated by UL SRP1 field and UL SRP3 field are the same, and the values ​​indicated by UL SRP2 field and UL SRP4 field are the same; and If the bandwidth of the EHT TB PPDU is 40 MHz, then the value indicated by the SRP1 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP1 field or the value indicated by the UL SRP3 field, and the value indicated by the SRP2 field in the U-SIG of the EHT TB PPDU is equal to the value indicated by the UL SRP2 field or the value indicated by the UL SRP4 field. A communication device according to any one of claims 32 to 35.

38. A computer-readable storage medium storing program instructions, wherein when the program instructions are executed on a computer, the computer is able to perform the method according to any one of claims 1 to 22.

39. A computer program for causing a computer to perform the method described in any one of claims 1 to 22.

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