Method and device for indicating spatial reuse parameters and determining spatial reuse parameter fields

Abstract

To provide a method for scheduling extremely high throughput (EHT) stations or for scheduling both high efficiency (HE) stations and EHT stations.SOLUTION: A method includes an access point (AP) transmitting a trigger frame to trigger a station to transmit an EHT trigger-based (TB) physical layer protocol data unit (PPDU), receiving the EHT TB PPDU transmitted by the station (STA), determining a value indicated by a spatial reuse parameter (SRP) in its universal signal field (U-SIG) based on one or two of a value indicated by an uplink (UL) EHT SRP and values indicated by one or more UL SRP fields in a common information field, and determining a value of a U-SIG reserved field in the U-SIG of the EHT TB PPDU based on a value of a U-SIG reservation indication field in the trigger frame.SELECTED DRAWING: Figure 7a

Description

Technical Field

[0001] This application relates to the field of wireless communication technologies, and in particular, to a method for indicating spatial reuse parameters, a corresponding method for determining a spatial reuse parameter field in a physical layer protocol data unit (PPDU), a trigger frame transmission method, a PPDU transmission method, and related apparatuses.

Background Art

[0002] Wireless local area networks (WLANs) have been developed over many generations, including 802.11a / b / g, 802.11n, 802.11ac, 802.11ax, and the under - consideration 802.11be. The 802.11ax standard may be referred to as the high - efficient (HE) standard, and the 802.11be standard may be referred to as the extremely high throughput (EHT) standard or the Wi - Fi 7 standard. Different from 802.11ax, 802.11be uses an ultra - wide bandwidth, such as 320 MHz, to achieve an ultra - high transmission speed and support scenarios with an ultra - high user density. Hereinafter, a station that supports the 802.11ax standard but not 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.

[0003] 802.11ax WLAN devices (access points (APs) and stations (STAs)) support only half-duplex transmission. In other words, only one device can transmit information on the same spectral bandwidth or channel, and other devices can only receive signals and cannot transmit signals. This avoids interference with the current transmitting device. However, as the density of WLAN devices increases, it has become more common for a basic service set (BSS) to overlap with other BSSs. In other words, overlapping basic service sets (OBSSs) have become more common. Since WLAN devices placed within an OBSS may receive physical protocol data units (PPDUs, also called packets or data packets) from two BSSs, the transmission efficiency is low with conventional methods. Therefore, 802.11ax proposes a spatial reuse method. By adaptively adjusting the transmission power, WLAN devices within an overlapping basic service set can perform transmissions simultaneously. This significantly improves the transmission efficiency. Specifically, in 802.11ax, spatial reuse is introduced into the trigger frame-based uplink scheduling transmission method.When transmitting a high efficient trigger based physical layer protocol data unit (HE TB PPDU), the station copies the values of the four uplink spatial reuse parameter (UL SRP) fields (which may also be called uplink parameterized spatial reuse (UL PSR) fields) in the uplink spatial reuse field within the common information field of the received trigger frame to the four spatial reuse parameter (SRP) fields included in the high efficient signal field A (HE-SIG-A) of the HE TB PPDU.

[0004] However, the 802.11be standard still uses the trigger frame-based uplink scheduling transmission method in the 802.11ax standard. Therefore, how to design the trigger frame to schedule EHT stations, or to schedule both HE stations and EHT stations, has become an urgent problem to be solved.

Summary of the Invention

Means for Solving the Problems

[0005] Embodiments of the present application provide a method for indicating spatial reuse parameters within a trigger frame and related apparatus, as well as a method for determining a spatial reuse parameter field within a PPDU and related apparatus. According to the technical solution provided by the embodiments of the present application, in a scenario where a trigger frame is used to schedule an EHT station, or both an HE station and an EHT station, based on the trigger frame, without changing the frame structure of the EHT TB PPDU, one or two of the spatial reuse parameter field of the EHT TB PPDU and the U-SIG reservation field can be set.

[0006] Hereinafter, the present application will be described from multiple aspects. It should be understood that cross-references to the beneficial effects of the following embodiments and different aspects may be made.

[0007] According to a first aspect, the present application provides a method for indicating spatial reuse parameters within a trigger frame, including the following steps.

[0008] An access point AP transmits a trigger frame, which is used to trigger a station to transmit an extremely high throughput-trigger based physical layer protocol data unit EHT TB PPDU.

[0009] The AP receives the EHT TB PPDU transmitted by the station, and the value indicated by the spatial reuse parameter SRP within the universal signal field U-SIG of the EHT TB PPDU is determined based on one or two of the value indicated by the uplink EHT spatial reuse parameter UL EHT SRP and the value indicated by one or more uplink spatial reuse parameter UL SRP fields within the common information field of the trigger frame.

[0010] Optionally, the trigger frame is further used to trigger the station to send 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 four UL SRP fields described above. 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.

[0011] According to the method provided in the first aspect of the present application, on the one hand, since the content of the trigger frame is not changed (specifically, the UL SRP value of the trigger frame is not changed), the HE station can set the spatial reuse parameters in the original method, the signaling overhead of the trigger frame is not increased, and the HE station does not lose granularity. On the other hand, when the frame structure of the U-SIG of the EHT TB PPDU is not changed, the spatial reuse parameters in the U-SIG of the EHT TB PPDU are set based on the values indicated by the four UL SRP fields in the trigger frame and one or two fields in the UL EHT SRP field. Therefore, the trigger frame may be used to schedule the EHT station to send an uplink EHT TB PPDU, and the HE station and the EHT station may be scheduled using the same trigger frame. In addition, the U-SIG reservation field in the U-SIG of the EHT TB PPDU can be set to a default value.

[0012] According to the second aspect, the present application provides a method for determining a spatial reuse parameter field in a PPDU. The method includes a step in which a station STA sends a trigger frame, and the trigger frame is used to trigger the station to send an extremely high throughput physical layer protocol data unit EHT TB PPDU.

[0013] The STA transmits an EHT TB PPDU, and the value indicated by the SRP in the U-SIG of the EHT TB PPDU is determined based on one or two of the values indicated by the uplink EHT spatial reuse parameter UL EHT SRP and the values indicated by one or more UL SRP fields in the common information field of the trigger frame.

[0014] Optionally, the trigger frame is further used to trigger a station to transmit an 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 four aforementioned 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.

[0015] According to the method provided in the second aspect of the present application, on the one hand, since the content of the trigger frame is not changed (specifically, the UL SRP value of the trigger frame is not changed), the HE station can set the spatial reuse parameter in the original way, the signaling overhead of the trigger frame is not increased, and the HE station does not lose granularity. On the other hand, when the frame structure of the U-SIG of the EHT TB PPDU is not changed, the spatial reuse parameter in the U-SIG of the EHT TB PPDU is set based on the values indicated by the four UL SRP fields in the trigger frame and one or two fields in the UL EHT SRP field. Therefore, the trigger frame may be used to schedule the EHT station to transmit an uplink EHT TB PPDU, and the HE station and the EHT station may be scheduled using the same trigger frame. In addition, the U-SIG reserved field in the U-SIG of the EHT TB PPDU may be set to a default value.

[0016] According to a third aspect, the present application provides a communication device used in a wireless local area network WLAN. The communication device may be an access point AP or a chip in the access point AP. A processor configured to generate a trigger frame, and A transceiver configured to transmit a trigger frame, the trigger frame being used to trigger a station to transmit an extremely high throughput trigger-based physical layer protocol data unit (EHT TB PPDU), the transceiver comprising:

[0017] The transceiver is configured to receive an EHT TB PPDU transmitted by a station, and a value indicated by a spatial reuse parameter (SRP) within a universal signal field (U-SIG) of the EHT TB PPDU is determined based on one or two of a value indicated by an uplink EHT spatial reuse parameter (UL EHT SRP) and a value indicated by one or more uplink spatial reuse parameter (UL SRP) fields within a common information field of the trigger frame.

[0018] The communication device provided in the third aspect implements the method provided in the first aspect and can achieve corresponding technical effects. Details are not described herein.

[0019] According to a fourth aspect, the present application provides a communication device for use in a wireless local area network (WLAN), the communication device comprising: A transceiver configured to receive a trigger frame, the trigger frame being used to trigger the communication device to transmit an extremely high throughput physical layer protocol data unit (EHT TB PPDU), the transceiver comprising: A processor configured to generate an EHT TB PPDU, a value indicated by an SRP within a U-SIG of the EHT TB PPDU being determined based on one or two of a value indicated by an uplink EHT spatial reuse parameter (UL EHT SRP) and a value indicated by one or more UL SRP fields within a common information field of the trigger frame.

[0020] The transceiver is configured to transmit an EHT TB PPDU.

[0021] The communication device provided in the fourth aspect implements the method provided in the second aspect and can achieve the corresponding technical effects. Details are not described here.

[0022] According to the method provided in the first aspect or the second aspect, or the communication device provided in the third aspect or the fourth aspect, in the first embodiment, the common information field of the trigger frame includes four uplink spatial reuse parameter UL SRP fields. The four UL SRP fields are the UL SRP1 field, the UL SRP2 field, the UL SRP3 field, and the UL SRP4 field. The U-SIG of the EHT TB PPDU includes one SRP field, and the value of the SRP field is equal to the minimum value of the values indicated by the UL SRP1 field, the UL SRP2 field, the UL SRP3 field, and the UL SRP4 field. Alternatively, the value of the SRP field is equal to any one of the values indicated by the UL SRP1 field, the UL SRP2 field, the UL SRP3 field, and the UL SRP4 field.

[0023] According to the method provided in the first aspect or the second aspect, or the communication device provided in the third aspect or the fourth aspect, in the second embodiment, the UL EHT SRP field is arranged within the reserved field of the common information field. The U-SIG of the EHT TB PPDU includes one SRP field, and the value of the SRP field is equal to the value indicated by the UL EHT SRP field.

[0024] According to the method provided in the first aspect or the second aspect, or the communication device provided in the third aspect or the fourth aspect, in the third embodiment, the common information field of the trigger frame includes four uplink spatial reuse parameter UL SRP fields. The four UL SRP fields are the UL SRP1 field, the UL SRP2 field, the UL SRP3 field, and the UL SRP4 field. The UL EHT SRP field is arranged in the reserved field of the common information field. The EHT TB PPDU is a non-aggregated PPDU, and the U-SIG of the EHT TB PPDU includes two SRP fields, namely the SRP1 field and the SRP2 field. The value of the SRP1 field is equal to the minimum value of the values indicated by the UL SRP1 field and the UL SRP2 field or any one of the values. The value of the SRP2 field is equal to the minimum value of the values indicated by the UL SRP3 field and the UL SRP4 field or any one of the values.

[0025] According to the method provided in the first aspect or the second aspect, or the communication device provided in the third aspect or the fourth aspect, in the fourth embodiment, the common information field of the trigger frame includes four uplink spatial reuse parameter UL SRP fields. The four UL SRP fields are the UL SRP1 field, the UL SRP2 field, the UL SRP3 field, and the UL SRP4 field. The UL EHT SRP field is arranged in the reserved field of the common information field. The bandwidth of the EHT TB PPDU is 320 MHz, or the EHT TB PPDU is part of an aggregated PPDU, and the U-SIG of the EHT TB PPDU includes two SRP fields, namely the SRP1 field and the SRP2 field. The value of the SRP1 field is equal to the value of the SRP2 field, and both values are equal to the minimum value of the values indicated by the UL SRP1 field, the UL SRP2 field, the UL SRP3 field, and the UL SRP4 field or any one of the values.

[0026] According to the method provided in the first aspect or the second aspect, or the communication device provided in the third aspect or the fourth aspect, in the fifth embodiment, the common information field of the trigger frame includes four uplink spatial reuse parameter UL SRP fields. The four UL SRP fields are the UL SRP1 field, the UL SRP2 field, the UL SRP3 field, and the UL SRP4 field. The UL EHT SRP field is arranged in the reserved field of the common information field. When the bandwidth of the EHT TB PPDU is 320 MHz, or the EHT TB PPDU is part of the aggregated PPDU, the U-SIG of the EHT TB PPDU includes two SRP fields, namely the SRP1 field and the SRP2 field. The value of the SRP1 field is equal to the minimum value of the values indicated by the UL SRP1 field, the UL SRP2 field, the UL SRP3 field, and the UL SRP4 field, or any one of the values. The value of the SRP2 field is equal to the value of the UL EHT SRP field.

[0027] According to the method provided in the first aspect or the second aspect, or the communication device provided in the third aspect or the fourth aspect, in the sixth embodiment, the universal signal field U-SIG of the EHT TB PPDU further includes a U-SIG reserved field, and the value of the U-SIG reserved field is a default value.

[0028] According to the fifth aspect, the present application provides a trigger frame transmission method. The method includes the step of an access point AP transmitting a trigger frame, where the trigger frame is used to trigger a station to transmit an extremely high throughput-trigger based physical layer protocol data unit EHT TB PPDU, and the trigger frame further includes a U-SIG reservation indication field for indicating the value of the U-SIG reserved field in the EHT TB PPDU.

[0029] The AP receives the EHT TB PPDU transmitted by the station, and the value of the U-SIG reservation field in the universal signal field U-SIG of the EHT TB PPDU is determined based on the value of the U-SIG reservation indication field in the trigger frame.

[0030] Optionally, the trigger frame is further used to trigger the station to transmit an 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.

[0031] In this solution, since the trigger frame indicates the value of the U-SIG reservation field in the EHT TB PPDU, the trigger frame may be used to schedule the EHT station to transmit an uplink EHT TB PPDU and set the value of the U-SIG reservation field in the uplink EHT TB PPDU based on the indication of the trigger frame. The HE station and the EHT station may be scheduled using the same trigger frame.

[0032] According to a sixth aspect, the present application provides a method for determining a spatial reuse parameter field in a physical layer protocol data unit PPDU. The method includes the station STA receiving a trigger frame, where the trigger frame is used to trigger the station to transmit an EHT TB PPDU, and the trigger frame further includes a U-SIG reservation indication field that indicates the value of the U-SIG reservation field in the EHT TB PPDU.

[0033] The STA transmits an EHT TB PPDU, and the value of the U-SIG reservation field in the universal signal field U-SIG of the EHT TB PPDU is determined based on the value of the U-SIG reservation indication field in the trigger frame.

[0034] 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 four UL SRP fields described above. 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.

[0035] According to a seventh aspect, the present application provides a wireless local area network WLAN communication device. The communication device may be an AP or a chip within the AP, such as a Wi-Fi chip. The communication device is a processor configured to generate a trigger frame, the trigger frame being used to trigger a station to transmit an extremely high throughput trigger-based physical layer protocol data unit EHT TB PPDU, the trigger frame further including a U-SIG reservation indication field indicating the value of the U-SIG reservation field within the EHT TB PPDU, and a transceiver configured to transmit the trigger frame.

[0036] The transceiver is further configured to receive an EHT TB PPDU transmitted by the station, and the value of the U-SIG reservation field within the universal signal field U-SIG of the EHT TB PPDU is determined based on the value of the U-SIG reservation indication field within the trigger frame.

[0037] 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 four UL SRP fields described above. 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.

[0038] According to an eighth aspect, the present application provides a wireless local area network WLAN communication device. The communication device may be a STA or a chip within the STA, such as a Wi-Fi chip. The communication device is a transceiver configured to receive a trigger frame, where the trigger frame is used to trigger a station to transmit an EHT TB PPDU, and the trigger frame further includes a U-SIG reservation indication field that indicates a value of a U-SIG reservation field within the EHT TB PPDU, and a transceiver, a processor configured to generate an EHT TB PPDU, where a value of the U-SIG reservation field within the universal signal field U-SIG of the EHT TB PPDU is determined based on a value of the U-SIG reservation indication field within the trigger frame, and a processor.

[0039] The transceiver is further configured to transmit the EHT TB PPDU, and a value of the U-SIG reservation field within the universal signal field U-SIG of the EHT TB PPDU is determined based on a value of the U-SIG reservation indication field within the trigger frame.

[0040] Optionally, the trigger frame is further used to trigger a station to transmit an HE TB PPDU. Values of four SRP fields included in the HE-SIG-A of the HE TB PPDU are respectively copied from the four UL SRP fields described above. The length of each UL SRP field is 4 bits, and the length of each SRP field within the HE-SIG-A is also 4 bits.

[0041] According to the method provided in the fifth aspect or the sixth aspect, or the communication device provided in the seventh aspect or the eighth aspect, in a first embodiment, the U-SIG reservation indication field is arranged within a special user information field of the user information list field of the trigger frame.

[0042] According to the method provided in the fifth or sixth aspect, or the communication device provided in the seventh or eighth aspect, in the second embodiment, the related identifier AID12 of the special user information field is a preset value or an incomplete AID12 value.

[0043] According to the method provided in the fifth or sixth aspect, or the communication device provided in the seventh or eighth aspect, in the third embodiment, the special user information field further includes one UL SRP field for U-SIG or two UL SRP fields for U-SIG.

[0044] According to the method provided in the fifth or sixth aspect, or the communication device provided in the seventh or eighth aspect, in the fourth embodiment, the common information field of the trigger frame includes four uplink spatial reuse parameter UL SRP fields. Alternatively, the common information field of the trigger frame further includes an uplink EHT spatial reuse parameter UL EHT SRP field within the reserved field of the common information field.

[0045] According to the ninth aspect, the present application provides a method for indicating spatial reuse parameters using a trigger frame. The method includes the step of the AP transmitting a trigger frame, where the trigger frame is used to trigger the station to transmit an EHT TB PPDU. The AP receives the EHT TB PPDU transmitted by the station. The trigger frame holds first indication information, and the first indication information indicates the values of the SRP1 field and / or the SRP2 field within the U-SIG of the EHT TB PPDU. The values of the SRP1 field and / or the SRP2 field within the U-SIG of the EHT TB PPDU are determined based on the first indication information.

[0046] According to a tenth aspect, the present application provides a method for determining a spatial reuse parameter field within a PPDU. The method includes the step of a STA receiving a trigger frame, where the trigger frame is used to trigger a station to transmit an EHT TB PPDU. The STA transmits the EHT TB PPDU. The trigger frame holds first indication information, and the first indication information indicates the value of the SRP1 field and / or the SRP2 field within the U-SIG of the EHT TB PPDU. The value of the SRP1 field and / or the SRP2 field within the U-SIG of the EHT TB PPDU is determined based on the first indication information.

[0047] According to an eleventh aspect, the present application provides a communication device for use in a WLAN. The communication device is an access point AP or a chip within the AP, and includes a processor configured to generate a trigger frame, where the trigger frame is used to trigger a station to transmit an EHT TB PPDU. The AP receives the EHT TB PPDU transmitted by the station. The trigger frame holds first indication information, and the first indication information indicates the value of the SRP1 field and / or the SRP2 field within the U-SIG of the EHT TB PPDU. The value of the SRP1 field and / or the SRP2 field within the U-SIG of the EHT TB PPDU is determined based on the first indication information.

[0048] The communication device further includes a transceiver configured to transmit the trigger frame.

[0049] According to a twelfth aspect, the present application provides a communication device for use in a WLAN. The communication device is a station STA or a chip within the STA, A transceiver 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 values of an SRP1 field and / or an SRP2 field within a U-SIG of the EHT TB PPDU, and the transceiver, A processor configured to generate an EHT TB PPDU, wherein values of an SRP1 field and / or an SRP2 field within a U-SIG of the EHT TB PPDU are determined based on the first indication information, and the processor.

[0050] The transceiver is further configured to transmit the EHT TB PPDU.

[0051] According to the method provided in the ninth aspect or the tenth aspect, or the communication device provided in the eleventh aspect or the twelfth aspect, in the first embodiment, the first indication information is arranged within a common information field of the trigger frame. The common information field includes four UL SRP fields, and the four UL SRP fields respectively indicate values of the four SRP fields within the HE TB PPDU.

[0052] According to the method provided in the ninth aspect or the tenth aspect, or the communication device provided in the eleventh aspect or the twelfth aspect, in the second embodiment, the first indication information is arranged within a common information field of the trigger frame. The common information field includes a UL EHT SRP field, and the UL EHT SRP field independently indicates, or together with the four UL SRP fields, values of the SRP1 field and / or the SRP2 field within the U-SIG of the EHT TB PPDU.

[0053] According to the method provided in the 9th aspect or the 10th aspect, or the communication device provided in the 11th aspect or the 12th aspect, in the 3rd embodiment, the first instruction information is arranged in the UL SRP field of the user information field of the trigger frame.

[0054] According to the method provided in the 9th aspect or the 10th aspect, or the communication device provided in the 11th aspect or the 12th aspect, in the 4th embodiment, a part of the first instruction information is arranged in the 4 UL SRP fields of the common information field of the trigger frame, and another part is arranged in the UL SRP field of the special user information field of the trigger frame. The 4 UL SRP fields, together with the UL SRP field arranged in the special user information field, indicate the values of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU.

[0055] According to the method provided in the 9th aspect or the 10th aspect, or the communication device provided in the 11th aspect or the 12th aspect, in the 5th embodiment, a part of the first instruction information is arranged in the common information field of the trigger frame. The common information field includes the UL EHT SRP field, and another part is arranged in the UL SRP field of the special user information field of the trigger frame. The UL EHT SRP field, together with the UL SRP field arranged in the special user information field, indicates the values of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU.

[0056] According to the method provided in the 9th aspect or the 10th aspect, or the communication device provided in the 11th aspect or the 12th aspect, in the 6th embodiment, the first instruction information is arranged in the special user information field of the trigger frame.

[0057] According to the method provided in the 9th aspect or the 10th aspect, or the communication device provided in the 11th aspect or the 12th aspect, in the 7th embodiment, the value of the AID12 field in the special user information field is a preset value or an incomplete AID12 value.

[0058] According to the method provided in the 9th aspect or the 10th aspect, or the communication device provided in the 11th aspect or the 12th aspect, in the 8th embodiment, the trigger frame is further used to trigger the station to transmit the HE TB PPDU. The values of the four SRP fields included in the HE-SIG-A of the HE TB PPDU are respectively copied from the four UL SRP fields described above. 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.

[0059] In this solution, the special user information field in the trigger frame independently indicates the spatial reuse parameter for the EHT TB PPDU. The meaning of the special user information field is clear and the scheduling of the HE station is not affected. In this way, the HE station and the EHT station can be scheduled using the same trigger frame.

[0060] In any one of the embodiments of the above-described aspects, the total bandwidth of the EHT TB PPDU is 320 MHz.

[0061] According to the 13th aspect, the present application provides a spatial reuse method. The method includes a step in which a communication device determines the transmission power of an EHT TB PPDU based on one or more of the values individually indicated by the SRP1 field and the SRP2 field included in the U-SIG of the EHT TB PPDU, the values individually indicated by the four UL SRP fields included in the common information field of the trigger frame, or the value indicated by the UL EHT SRP in the common information field of the trigger frame. The communication device transmits the PPDU based on the transmission power of the PPDU.

[0062] The communication device may be an AP or an STA. When the communication device is an AP, the PPDU is a parameterized spatial reuse reception (PSRR) PPDU. When the communication device is an STA, the PPDU is a response frame that responds to the PSRR PPDU.

[0063] According to a 14th aspect, the present application provides a communication device. The communication device may be an AP or an STA. Further, the communication device may be a chip within the AP or STA, such as a Wi-Fi chip. The communication device is configured to determine the transmission power of the PPDU based on values individually indicated by the SRP1 field and the SRP2 field included in the U-SIG of the EHT TB PPDU, and / or values individually indicated by four UL SRP fields included in the common information field of the trigger frame, and includes a determination unit and a transceiver unit configured to transmit the PPDU based on the transmission power of the PPDU.

[0064] The communication device may be an AP or an STA. When the communication device is an AP, the PPDU is a PSRR PPDU. When the communication device is an STA, the PPDU is a response frame that responds to the PSRR PPDU.

[0065] According to the method in the 13th aspect or the communication device in the 14th aspect, in the first embodiment, before the communication device determines the transmission power of the PPDU, the method further includes the step of the communication device receiving a trigger frame, and the trigger frame includes four UL SRP fields. The value indicated by one UL SRP field is the sum of the transmission power of the first AP in one subchannel and the maximum interference power received by the first AP. The communication device and the first AP are arranged within the same overlapping basic service set OBSS. The "first AP" herein is the AP that transmits the trigger frame and is also the AP of the method described above for determining the spatial reuse parameter field in the PPDU. The communication device and the first AP are not the same device.

[0066] In this solution, a spatial reuse method is provided for the EHT TB PPDU, so that compatibility is obtained when there is one or two SRP fields in the U-SIG, and spatial utilization is implemented according to the EHT standard. In this way, devices within the overlapping basic service set can perform transmissions simultaneously to improve transmission efficiency.

[0067] According to the 15th aspect, the present application provides a device. The device is implemented in the product form of a functional unit and includes a processing unit and a transceiver unit. The processing unit is configured to implement the functions of any one of the processors in the above-described aspects, and the transceiver unit is configured to implement the functions of any one of the transceivers in the above-described aspects.

[0068] According to the 16th aspect, the present application provides a device. The device is implemented in the product form of a chip of a functional unit and includes an input / output interface and a processing circuit.

[0069] In a possible design, the device is a chip in a communication device according to the third, seventh, eleventh, or fourteenth aspect. The communication device is an AP. The processing circuit in the chip is configured to implement the processing functions executed on the AP side in the third, seventh, eleventh, or fourteenth aspect. In another embodiment, the chip may further include a radio frequency circuit.

[0070] In a possible design, the device is a chip in a communication device according to the fourth, eighth, twelfth, or fourteenth aspect. The communication device is an STA. The processing circuit in the chip is configured to implement the processing functions executed on the AP side in the fourth, eighth, eleventh, or fourteenth aspect. In another embodiment, the chip may further include a radio frequency circuit. In another embodiment, the chip may further include a radio frequency circuit.

[0071] According to the seventeenth aspect, the present application provides a computer-readable storage medium. The computer-readable storage medium stores instructions. When the instructions operate on a computer, the computer is enabled to execute the method according to the first, second, fifth, sixth, ninth, tenth, or thirteenth aspect.

[0072] According to the eighteenth aspect, the present application provides a computer program product including instructions. When the computer program product operates on a computer, the computer is enabled to execute the method according to the first, second, fifth, sixth, ninth, tenth, or thirteenth aspect.

[0073] In the embodiments of the present application, the length of the U-SIG field of the EHT TB PPDU is not changed or increased (the U-SIG field occupies two OFDM symbols and totals 8 microseconds (μs)). The spatial reuse parameter field of the EHT TB PPDU is set based on one or more of the instructions of the four UL SRP fields in the trigger frame, the instruction of the UL EHT SRP field in the trigger frame, and the instruction of the special user information field in the trigger frame. In this way, the HE station and the EHT station can be scheduled using the same trigger frame, and spatial reuse can be implemented according to the EHT standard. Therefore, WLAN devices within the overlapping basic service set can perform transmissions simultaneously to improve transmission efficiency.

[0074] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings used to describe the embodiments will be briefly described below.

Brief Description of the Drawings

[0075]

Figure 1

Figure 2a

Figure 2b

Figure 3a

Figure 3b

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Figure 5a

Figure 5b

Figure 6a-1

Figure 6a-2

Figure 6b

Figure 7a

Figure 7b

Figure 8a

Figure 8b

Figure 9

Figure 10A

Figure 10B

Figure 11

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Figure 12b

Figure 12c

Figure 13A

Figure 13B

Figure 14

Figure 15a

Figure 15b

Figure 16

Figure 17

Figure 18

Figure 19

Figure 20

Figure 21

Figure 22

Embodiments for Carrying Out the Invention

[0076] Hereinafter, with reference to the accompanying drawings in the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely.

[0077] To facilitate the understanding of the method provided in the embodiments of the present application, hereinafter, the system architecture and / or application scenario of the method provided in the embodiments of the present application will be described. It should be understood that the system architecture and / or application scenario described in the embodiments of the present application are intended to more clearly explain the technical solutions in the embodiments of the present application and do not constitute a limitation on the technical solutions provided in the embodiments of the present application.

[0078] This embodiment of the present application provides a method for instructing spatial reuse parameters in a trigger frame to schedule an EHT station, or to schedule both an HE station and an EHT station.

[0079] In the embodiment of the trigger frame of this embodiment, the common information field of the trigger frame remains unchanged, and the special user information field in the user information list field part individually indicates the spatial reuse parameters in the EHT TB PPDU. In another embodiment, a part of the fields in the common information field of the trigger frame indicates the spatial reuse parameters in the EHT TB PPDU. Therefore, it is not necessary to add a special user information field to the user information list field part. In yet another embodiment, a special user information field is added to the user information list field part of the trigger frame to indicate the spatial reuse parameters and U-SIG reservation information in the EHT TB PPDU.

[0080] For two embodiments, in the embodiment of this application, the length of the U-SIG field of the EHT TB PPDU is not changed or increased (the U-SIG field occupies two OFDM symbols and totals 8 microseconds (μs)). The spatial reuse parameter field of the EHT TB PPDU is set based on four UL SRP fields in the trigger frame, the UL EHT SRP field in the trigger frame, or one or more of the four UL SRP fields and the UL EHT SRP field. In this way, the HE station and the EHT station can be scheduled using the same trigger frame, and spatial reuse can be implemented according to the EHT standard. Therefore, WLAN devices in the overlapping basic service set can perform transmissions simultaneously to improve the transmission efficiency.

[0081] The method of instructing spatial reuse parameters with a trigger frame and the method of determining a spatial reuse parameter field in a PPDU provided in this embodiment may be applied to a wireless communication system such as a wireless local area network system. The method of determining a spatial reuse parameter field in a PPDU may be implemented by a communication device in a wireless communication system, or 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 on multiple links. For example, the communication device may be referred to as a multi-link device (MLD) or a multi-band device. Compared with a communication device that supports only single-link transmission, a multi-link device has higher transmission efficiency and higher throughput.

[0082] The method for instructing spatial reuse parameters within a trigger frame and the method for determining a spatial reuse parameter field within a PPDU provided in the embodiments of this application may be applicable to a scenario where an AP communicates with one or more STAs, may be further applicable to a communication scenario where an AP communicates with another AP, and may be further applicable to a scenario where an STA communicates with another STA. FIG. 1 is a schematic diagram of the architecture of a wireless communication system according to an embodiment of this application. As shown in FIG. 1, the wireless communication system may include one or more APs (e.g., AP1 and AP2 in FIG. 2) and one or more STAs (e.g., STA1, STA2, and STA3 in FIG. 2). AP1 and AP2 may be arranged within the same OBSS. Both the AP and the STA support the WLAN communication protocol. The communication protocol may include 802.11be (also referred to as Wi-Fi 7, the EHT protocol), and may further include protocols such as 802.11ax and 802.11ac. Of course, the communication protocol may further include a next-generation protocol such as 802.11be, which is accompanied by the continuous evolution and development of communication technologies. As an example, WLAN is used. The apparatus for implementing the method in this application may be an AP or an STA within the WLAN, or a chip or a processing system arranged in the AP or the STA.

[0083] An access point (e.g., AP1 or AP2 in FIG. 1) is a device with a wireless communication function, supports communication using the WLAN protocol, and has the function of communicating with another device (e.g., a station or another access point) within the WLAN network. Of course, it may further have the function of communicating with another device. In a WLAN system, an access point may be called an access point station (AP STA). The device with a wireless communication function may be the entire device or a chip or processing system installed in the entire device. The device on which the chip or processing system is installed may implement the methods and functions in the embodiments of the present application under the control of the chip or processing system. The AP in the embodiments of the present application is a device that provides services to 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, relay stations, etc. Of course, alternatively, the AP may be a chip or processing system in these devices in various forms for implementing the methods and functions in the embodiments of the present application.

[0084] A station (e.g., STA1, STA2, or STA3 in FIG. 1) is a device with a wireless communication function, supports communication using the WLAN protocol, and has the ability to communicate with other stations or access points in the WLAN network. In a WLAN system, a station may be called a non-access point station (non-AP STA). For example, a STA is any user communication device that enables a user to communicate with an AP and further communicate with the WLAN. The device with the wireless communication function may be the entire device, or a chip or processing system installed in the entire device. The device in which the chip or processing system is arranged may implement the methods and functions of this embodiment of the present application under the control of the chip or processing system. For example, a STA may be a user device that can connect to the Internet, such as a tablet computer, a desktop computer, a laptop computer, a notebook computer, an ultra-mobile personal computer (UMPC), a handheld computer, a netbook, a personal digital assistant (PDA), or a mobile phone. Alternatively, a STA may be an Internet of Things node in the Internet of Things, an in-vehicle communication device in the Internet of Vehicles, an entertainment device, a gaming device or system, a global positioning system device, etc. Alternatively, a STA may be a chip and processing system within the aforementioned terminal.

[0085] The WLAN system can provide high-speed and low-latency transmission. With the continuous development of WLAN application scenarios, the WLAN system will be applied to more scenarios or industries, such as the Internet of Things industry, the Internet of Vehicles industry, the banking industry, enterprise offices, exhibition halls in stadiums, concert halls, hotel rooms, dormitories, hospital wards, classrooms, supermarkets, squares, streets, production workshops, and warehouse storage. Of course, devices that support WLAN communication (such as access points or stations) can be sensor nodes in smart cities (such as smart water meters, smart electricity meters, or smart air detection nodes), smart devices in smart homes (such as smart cameras, projectors, displays, TVs, stereos, refrigerators, or washing machines), nodes in the Internet of Things, entertainment terminals (such as AR, VR, or other wearable devices), smart devices in smart offices (such as printers, projectors, speakers, or stereos), Internet of Vehicles devices in the Internet of Vehicles, infrastructure in daily life scenarios (such as vending machines, self-service navigation devices in supermarkets, self-service checkout devices, or self-service ordering machines), devices in large-scale sports and concert venues, etc. The specific forms of the multi-link STA and multi-link AP are not limited in the embodiments of this application and are only examples for the description in this specification.

[0086] The 802.11 standard focuses on the physical layer (PHY) and the media access control (MAC) layer parts. For an example, refer to FIG. 2a. FIG. 2a is a schematic diagram showing the structure of an access point according to an embodiment of the present application. The AP may be multi-antenna / multi-radio frequency, or may be a single antenna / single radio frequency. The antenna / radio frequency is used to transmit / receive data packets. In one embodiment, the antenna or radio frequency part of the AP may be separated, in other words, may be separated from the main body of the AP. In FIG. 2a, the AP includes a physical layer processing circuit and a media access control layer 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. For another example, refer to FIG. 3b. FIG. 2b is a schematic diagram showing the structure of a station according to an embodiment of the present application. FIG. 2b is a schematic diagram showing the structure of a single antenna / single radio frequency STA. In an actual scenario, the STA may be multi-antenna / multi-radio frequency, and may also be a device with three or more antennas. The antenna / radio frequency is used to transmit / receive data packets. In one embodiment, the antenna or radio frequency part of the STA may be separated, in other words, may be separated from the main body of the STA. In FIG. 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.

[0087] The foregoing content briefly describes the system architecture in the embodiments of the present application. To better understand the technical solutions in the embodiments of the present application, the content related to the embodiments of the present application will be described below.

[0088] 1. Overlapping Basic Service Set (OBSS) An overlapping basic service set is one in which the basic service set and the station's basic service set operate on the same channel, and the basic service set is (either partly or wholly) within the basic service area of the station's basic service set. The overlapping basic service area is called an overlapping basic service set (OBSS): A basic service set (BSS) operating on the same channel as the station’s (STA’s) BSS and within (either partly or wholly) its basic service area (BSA). The basic service area is the area containing the members of a basic service set (BSS). It might contain members of other BSSs (basic service area (BSA): The area containing the members of a basic service set (BSS). It might contain members of other BSSs).

[0089] In other words, the overlapping area between the basic service area of one BSS and that of another BSS is the OBSS. The overlapping in this specification means that the basic service area of one BSS and that of another BSS may partially overlap or may be in an inclusion relationship. Specifically, it can be understood that it may mean that the basic service area of one BSS is within the scope of the basic service area of another BSS. FIG. 3a is a schematic diagram of an OBSS formed by partially overlapping one BSS and another BSS. In FIG. 3a, AP1, STA1, and STA 3 belong to BSS 1, and AP 2 and STA 2 belong to BSS2. There is an overlapping area between BSS1 and BSS2, and AP 1 and AP 2 are arranged within the overlapping area between BSS 1 and BSS2. In other words, they are arranged within the OBSS formed by BSS 1 and BSS 2. FIG. 3b is a schematic diagram of an OBSS formed by one BSS including another BSS. In FIG. 3b, AP1, STA1, and STA3 belong to BSS1, and AP2 and STA2 belong to BSS2. BSS1 includes BSS2, and AP1 and AP2 are arranged within the overlapping area between BSS1 and BSS2 (i.e., the basic service area of BSS 2 in FIG. 3b). In other words, they are arranged within the OBSS formed by BSS1 and BSS2.

[0090] Optionally, a WLAN device located within the same OBSS may receive information from two BSSs. For example, FIG. 3a is used as an example. When AP1 and STA1 located within the same BSS perform data transmission, AP2 located within another BSS can receive the information transmitted by AP1 and STA1, or AP2 can further receive the information transmitted by STA3. Based on the spatial reuse parameters transferred by AP1, AP2 can adaptively adjust the power with which AP2 transmits a PPDU to STA2 in order to perform simultaneous transmission in the OBSS. Similarly, when AP2 and STA2 within the same BSS perform data transmission, AP1 within another BSS can receive the information transmitted by AP2. Alternatively, based on the spatial reuse parameters transferred by AP2, AP1 can adaptively adjust the power with which AP1 transmits a PPDU to STA1 and / or STA3 in order to perform simultaneous transmission within the OBSS.

[0091] 2. Trigger Frame-Based Uplink Scheduling Transmission Method in the 802.11ax Standard Figure 4 is a schematic diagram of a trigger frame-based uplink scheduling transmission method in the 802.11ax standard. As shown in Figure 4, the trigger frame-based uplink scheduling transmission method in the 802.11ax standard particularly includes the following steps: (1) The AP transmits a trigger frame, and the trigger frame 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. 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 an AP TX Power field and an UL Spatial Reuse field. The user information list field includes one or more user information fields, and one user information field includes information that one STA needs to read. Figure 5b is a schematic diagram of the frame format of the common information field and the user information field in the 802.11ax trigger frame. As shown in Figure 5b, in the user information field, the association identification 12 (AID12) indicates the association identifier of the STA, and the resource unit (RU) allocation subfield indicates the specific resource unit position allocated to the STA (the STA indicated by AID12).

[0092] (2) After receiving the trigger frame, one or more STAs analyze the trigger frame to obtain the user information field that matches the AID of the STA, and then transmit the HE TB PPDU on the RU indicated by the resource unit allocation subfield in the user information field.

[0093] (3) After receiving the HE TB PPDU, the AP returns a confirmation response frame to one or more STAs to confirm that the AP has received the HE TB PPDU.

[0094] In one example, refer to Table 1 below for the meaning and function of the fields that may be included in the HE TB PPDU.

[0095] [Table 1]

[0096] 3.802.11be Standard Trigger Frame-based Uplink Scheduling Transmission Method and Corresponding EHT TB PPDU The 802.11ax trigger frame-based uplink scheduling transmission method is continued to be used in 802.11be, and the frame format and method procedure of the trigger frame in 802.11be are similar to those of 802.11ax.

[0097] Figures 6a-1 and 6a-2 are schematic diagrams of the frame formats of the common information field and the user information field within the trigger frame of 802.11be. The trigger frames shown in Figures 6a-1 and 6a-2 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. It should be understood that Figures 6a-1 and 6a-2 are merely examples. In the present embodiment of the present application, the UL SRP field within the uplink spatial reuse field of the common information field is relevant. Another field within the trigger frame may be different from those in Figures 6a-1 and 6a-2, or in other words, may be represented in a different format. This is not limited in this embodiment of the present application. For example, the uplink HE-SIG A2 reserved field included in the common information field portion may be referred to as the UL U-SIG reserved field. Figure 6b is a schematic diagram of the frame structure of an EHT TB PPDU. As shown in Figure 6b, the EHT TB PPDU includes a legacy short training sequence, a legacy long training sequence, a legacy signal field, a repeated legacy signal field, a universal signal 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 the EHT TB PPDU, please refer to Table 2 below.

[0098]

Table 2

[0099] In one example, the content of the U-SIG field within the EHT TB PPDU is shown in Table 3.

[0100]

Table 3

[0101] From the structure and content of the U-SIG of the EHT TB PPDU in FIG. 6b and Table 3, it can be found that due to the length limit, the U-SIG of the EHT TB PPDU includes at most two SRP fields, for example, the Spatial Reuse 1 field and the Spatial Reuse 2 field, and the length of each SRP field is 4 bits. 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 includes four SRP fields that are in one-to-one correspondence with the four UL SRP fields in the trigger frame. Therefore, in the scenario where a trigger frame is used to schedule an EHT station to transmit an uplink EHT TB PPDU, the SRP fields in the EHT TB PPDU cannot be set according to the method of setting the SRP fields in the HE TB PPDU. Therefore, how to set the trigger frame to instruct to set the SRP fields in the EHT TB PPDU, and how to set the SRP fields in the EHT TB PPDU when the STA transmits the EHT TB PPDU so that the HE station and the EHT station can be scheduled using the same trigger frame and the spatial reuse parameters can be fed back is an issue that needs to be urgently resolved.

[0102] Embodiments of the present application provide a method for instructing spatial reuse parameters in a trigger frame and a method for determining spatial reuse parameter fields in a PPDU. When the bandwidth is different, the trigger frame is designed without changing the frame structure of the EHT TB PPDU, and the spatial reuse parameters in the EHT TB PPDU are set, so that the HE station and the EHT station can be scheduled using the same trigger frame, and spatial reuse can be implemented according to the EHT standard. In this way, WLAN devices in the overlapping basic service set can perform transmissions simultaneously to improve transmission efficiency.

[0103] Next, with reference to more attached drawings, the technical solutions provided in this application will be described in detail.

[0104] The technical solutions provided in this application are described using Embodiment 1 to Embodiment 5. Embodiment 1 describes a method of setting spatial reuse parameters in an EHT TB PPDU with different bandwidths (20 / 40 / 80 / 160 / 320 MHz) without changing 802.11ax. Embodiment 2 describes a method of instructing spatial reuse parameters in an EHT TB PPDU by using the reserved field in the common information field of the trigger frame to implement the function of the uplink EHT spatial reuse field (the HE-SIG-A2 reserved field and the reserved field are collectively called the reserved field). Embodiment 3 describes a method of instructing spatial reuse parameters in an EHT TB PPDU by using the reserved field in the common information field and the user information list field in the trigger frame. Embodiment 4 describes a spatial reuse method based on the spatial reuse parameters in 802.11be. It should be understood that any combination of the technical solutions described in Embodiment 1 to Embodiment 4 of this application may form a new embodiment.

[0105] It should be understood that the AP and STA in this application may be single-link devices or functional entities or functional units in multi-link devices. For example, the AP in this application is the AP in the AP multi-link device, and the STA is the STA in the station multi-link device. This is not limited in this application.

[0106] It should be understood that the method provided in this application is described below as an example using a communication system including one or more APs and one or more STAs. The AP supports the 802.11be protocol (also called the Wi-Fi 7, EHT protocol) and may further support another WLAN communication protocol, such as protocols like 802.11ax and 802.11ac. At least one of 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 can further support the next-generation protocol 802.11be. In other words, the method provided in this application is applicable not only to the 802.11be protocol but also to the next-generation 802.11be protocol.

[0107] Embodiment 1 Embodiment 1 of this application mainly describes the setting of spatial reuse parameters in an EHT TB PPDU with a bandwidth of 20 / 40 / 80 / 160 / 320 MHz when the trigger frame is not changed (or the content of the trigger frame is not changed).

[0108] In Embodiment 1, the trigger frame is shown in Figure 5b.

[0109] Figure 7a is a first schematic flowchart of a method for indicating spatial reuse parameters in a trigger frame and a corresponding method for determining a spatial reuse parameter field in a PPDU according to an embodiment of this application. As shown in Figure 7a, the method includes the following steps, but is not limited thereto.

[0110] S101: The AP transmits a trigger frame, and the trigger frame is used to trigger stations to transmit an extremely high throughput trigger-based physical layer protocol data unit EHT TB PPDU.

[0111] S102: The STA receives the trigger frame.

[0112] S103: The STA transmits an EHT TB PPDU, and there is only one spatial reuse parameter (SRP) field in the universal signal field (U-SIG) of the EHT TB PPDU. The SRP field indicates the spatial reuse parameter for the entire bandwidth. The value indicated by the SRP field is determined based on the values indicated by one or more uplink spatial reuse parameter (UL SRP) fields in the common information field of the trigger frame.

[0113] In one embodiment, as shown in Figure 7b, the value indicated by the SRP1 field is equal to the minimum value of the four spatial reuse fields indicated by the four uplink spatial reuse parameter (UL SRP) fields, and can be represented as SRP = min{UL SRP1, UL SRP2, UL SRP3, UL SRP4}.

[0114] In another embodiment, the value indicated by the SRP1 field is equal to any one of the values of the four spatial reuse fields indicated by the four uplink spatial reuse parameter (UL SRP) fields, and can be represented as SRP1 being equal to UL SRP1, UL SRP2, UL SRP3, or UL SRP4.

[0115] S104: The AP receives the EHT TB PPDU transmitted by the station.

[0116] Figure 8a is a second schematic flowchart of a method for indicating a spatial reuse parameter in a trigger frame and a corresponding method for determining a spatial reuse parameter field in a PPDU according to an embodiment of the present application. As shown in Figure 8a, the method includes the following steps, but is not limited thereto.

[0117] S201: The AP transmits a trigger frame, which is used to trigger the station to transmit an extremely high throughput-trigger based physical layer protocol data unit (EHT TB PPDU). For the structure and composition of the trigger frame, refer to FIGS. 6a-1 and 6a-2.

[0118] S202: The STA receives the trigger frame.

[0119] S203: The STA transmits an EHT TB PPDU, and the universal signal field (U-SIG) of the EHT TB PPDU includes two spatial reuse parameters, an SRP1 field and an SRP2 field, which respectively indicate the spatial reuse parameter corresponding to the low-frequency half over the entire bandwidth and the spatial reuse parameter corresponding to the high-frequency half. The values indicated by the SRP1 field and the SRP2 field of the spatial reuse parameters are respectively determined based on the values indicated by one or more uplink spatial reuse parameter (UL SRP) fields within the common information field of the trigger frame.

[0120] In one embodiment, the SRP1 field and the SRP2 field respectively indicate the SRP values of different sub-channels, and the SRP value is equal to the sum of the transmission power of the AP in the corresponding sub-channel and the maximum interference power that can be received by the AP. It should be understood that the SRP1 field and the SRP2 field in the U-SIG of the EHT TB PPDU may have other names, such as the PSR1 field and the PSR2 field. This is not limited in this embodiment of the present application.

[0121] In one embodiment, as shown in FIG. 8b, when the bandwidth of the EHT TB PPDU is 20 / 40 / 80 / 160 MHz and the EHT TB PPDU is a non-aggregated PPDU, the value of the SRP1 field in the U-SIG is equal to the minimum value of the UL SR1 field and the UL SR2 field in the four spatial reuse fields indicated by the uplink spatial reuse field of the trigger frame, and can be represented as SRP1 = min{UL SRP1, UL SRP2}.

[0122] The value of the SRP2 field in the U-SIG may be equal to the minimum value of the UL SR3 field and the UL SR4 field in the four spatial reuse fields indicated by the uplink spatial reuse field of the trigger frame, and can be represented as SRP2 = min{SRP3, UL SRP4}.

[0123] In one embodiment, as shown in FIG. 8b, when the EHT bandwidth is 320 MHz or the TB PPDU is an aggregated PPDU, the value of the SRP1 field in the U-SIG is equal to the value of the SRP2 field, and both the SRP1 field and the SRP2 field are equal to the minimum value of the four spatial reuse fields indicated by the uplink spatial reuse field in the trigger frame, i.e., SRP1 = SRP2 = min{UL SRP1, UL SRP2, UL SRP3, UL SRP4}.

[0124] S204: The AP receives the EHT TB PPDU transmitted by the station.

[0125] Optionally, the trigger frame in the procedure of the method for indicating spatial reuse parameters within the trigger frame, as shown in FIGS. 7a and 8a, may be used not only to trigger an EHT station to transmit an EHT TB PPDU, but also to trigger an HE station to transmit an HE TB PPDU. Alternatively, the trigger frame may be used only to trigger an EHT station to transmit an EHT TB PPDU, or only to trigger an HE station to transmit an HE TB PPDU. This embodiment of the present application focuses on the case where the trigger frame is used to trigger an EHT station to transmit an EHT TB PPDU, but is not limited to the case where the trigger frame is used only to trigger an EHT station to transmit an EHT TB PPDU, and may further include cases where the trigger frame is used to trigger an EHT station to transmit an EHT TB PPDU and at the same time trigger an HE station / EHT station to transmit an HE TB PPDU. It will be understood that an HE station can only transmit an HE TB PPDU, but an EHT station may be compatible with the 802.11ax protocol. Thus, an EHT station may transmit both an HE TB PPDU and an EHT TB PPDU.

[0126] FIG. 9 is a schematic diagram of a time series in which a trigger frame is used for scheduling both HE stations and EHT stations for uplink data transmission according to an embodiment of the present application. As shown in FIG. 9, the AP transmits a trigger frame, and the trigger frame is used to schedule both an HE station (e.g., STA 1 in FIG. 9) and an EHT station (e.g., STA 2 in FIG. 9) simultaneously to perform uplink data transmission. After STA 1 and STA 2 receive the trigger frame, after a certain period (e.g., a short inter-frame space), STA 1 transmits an HE TB PPDU, and STA 2 transmits an EHT TB PPDU. After receiving the uplink multi-user PPDU, the AP returns a Multiple STA Block Acknowledge (M-BA) frame after a certain period (e.g., a short inter-frame space) to acknowledge that the AP has received the PPDU transmitted by one or more stations. The trigger frame shown in FIG. 9 may be used only for scheduling an EHT station. In other words, it will be understood that both STA 1 and STA 2 in FIG. 9 are EHT stations. The trigger frame shown in FIG. 9 may also be used only for scheduling stations to transmit EHT TB PPDUs. In other words, it should be further understood that both STA 1 and STA 2 in FIG. 9 transmit EHT TB PPDUs.

[0127] Specifically, the trigger frame can be transmitted by broadcast. When the AP transmits the trigger frame, one or more stations can receive the trigger frame. If the trigger frame is used to simultaneously schedule the EHT station to transmit an EHT TB PPDU and the HE station to transmit an HE TB PPDU, the EHT station may set the values indicated by the SRP1 field and the SRP2 field 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 then transmit the EHT TB PPDU. In other words, the EHT station may set, or alternatively, the values indicated by the SRP1 field and the SRP2 field 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 to the four SRP fields in the HE TB PPDU and then transmit the HT TB PPDU.

[0128] Optionally, the correspondence between the values and meanings of the UL SRP field or the SRP field in this application can be shown in Table 4 below. The uplink space reuse parameter (UL SRP) field may also be referred to as the uplink parameter 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. It should be understood that the value of the uplink space reuse parameter is determined by the AP and is equal to the sum of the transmission power of the AP and the maximum interference power that can be received by the AP.

[0129]

Table 4

[0130] In this application, it should be understood that the value indicated by the UL SRP field may be any value in the second column of Table 4, and the value of the UL SRP field may be any value in the first column of Table 4.

[0131] Embodiment 2 Embodiment 2 of this application mainly describes a method of setting a trigger frame to adapt to the SRP field of U-SIG (in other words, changing the content of the trigger frame), and a method of setting the spatial reuse parameters in the trigger-based PPDU (HE TB PPDU and EHT TB PPDU) after changing the content of the trigger frame.

[0132] In actual applications, it should be understood that Embodiment 2 of this application may be implemented with reference to some embodiments of Embodiment 1 or implemented individually. This is not limited in this embodiment of this application.

[0133] In Embodiment 2, the HE-SIG-A2 reservation field of the trigger frame shown in FIG. 5b or FIGS. 6a-1 and 6a-2 is used, or a reservation field is further used to indicate the spatial reuse parameters in the EHT TB PPDU.

[0134] Specifically, as shown in FIGS. 10A and 10B, the reserved fields (the reserved fields include the HE-SIG-A2 reserved field and the reserved field) within the common information field of the trigger frame are used to set the uplink EHT PPDU bandwidth subfield, the HE / EHT subfield that instructs the EHT STA to transmit an EHT TB PPDU or an HE TB PPDU, and the uplink EHT spatial reuse field. Optionally, a special user presence indication subfield may further be included. The uplink EHT spatial reuse field individually indicates the spatial reuse parameters within the EHT TB PPDU or is used together with the uplink spatial reuse field to indicate the spatial reuse parameters within the EHT TB PPDU. In other words, the value of the SRP field within the U-SIG of the EHT TB PPDU depends on at least one of the uplink EHT spatial reuse field and the uplink spatial reuse field.

[0135] The contents of the HE-SIG-A2 reserved field and the reserved field of the trigger frame shown in FIGS. 10A and 10B are shown in Table 5.

[0136]

Table 5

[0137] It should be understood that the uplink HE-SIG-A2 reserved field and / or the reserved field may include some or all of the subfields. It should further be understood that the subfields in Table 5 may have other names. This is not limited to the examples of this application. The number of bits occupied by each subfield is one example. This is not limited in this embodiment of this application.

[0138] The meaning of the uplink EHT PPDU bandwidth field in Table 5 when the uplink EHT PPDU bandwidth field individually indicates the uplink EHT PPDU bandwidth is shown in Table 6.

[0139]

Table 6

[0140] It should be understood that the correspondence between the values of the uplink EHT PPDU bandwidth field and the meaning of the values is just one example. In the present embodiment of this application, there may be other correspondences. For example, 100 may indicate 320MHz-1, 101 may indicate 320MHz-2, and 320MHz-1 and 320MHz-2 respectively represent two types of 320MHz channel divisions, where the channel center frequency of 320MHz-1 is 31 / 95 / 159 and the channel center frequency of 320MHz-2 is 63 / 127 / 191.

[0141] It should be noted that two reservation instructions have been introduced in the current standard. One is the Validate reservation bit / entry. When the receiving end does not understand the instruction of the field, the frame is ignored. The other is the Disregard reservation bit / entry. When the receiving end does not understand the instruction of the field, the field is ignored and the interpretation of another field continues. For the uplink EHT PPDU bandwidth field, the reservation entry must be a validation reservation entry. In other words, when a non-EHT receiving end does not understand the instruction of the field, the frame is ignored.

[0142] Hereinafter, with reference to the trigger frames shown in FIGS. 10A and 10B, a method for indicating spatial reuse parameters in a trigger frame and a corresponding method for determining the spatial reuse parameter field in a PPDU will be described.

[0143] FIG. 11 is a third schematic flowchart of a method for indicating spatial reuse parameters within a trigger frame and a corresponding method for determining a spatial reuse parameter field within a PPDU according to an embodiment of the present application. As shown in FIG. 11, the method for indicating spatial reuse parameters within a trigger frame and the corresponding method for determining a spatial reuse parameter field within a PPDU include, but are not limited to, the following steps.

[0144] S301: The AP transmits a trigger frame, which is used to trigger the station to transmit an EHT TB PPDU. The uplink spatial reuse field in the common information field of the trigger frame includes four UL SRP fields, and the UL HE-SIG-A2 reserved field and / or the UL HE-SIG-A2 reserved field of the trigger frame are used as EHT spatial reuse parameters. In one embodiment, as shown in FIGS. 10A and 10B, the UL HE-SIG-A2 reserved field and / or the UL HE-SIG-A2 reserved field include an uplink EHT PPDU bandwidth subfield, a HE / EHT subfield, an uplink EHT spatial reuse field, and a special user presence indication field.

[0145] S302: The STA receives the trigger frame.

[0146] S303: The STA transmits an EHT TB PPDU, and the U-SIG of the EHT TB PPDU may include one SRP field or two SRP fields.

[0147] In one embodiment, as shown in FIG. 12a, the U-SIG includes only one SRP field, indicating the spatial reuse parameter for the entire bandwidth. In this case, the value of the SRP field is equal to the value of the uplink EHT spatial reuse field.

[0148] In another embodiment, as shown in FIG. 12b, the U-SIG includes two SRP fields represented by U-SIG SRP1 and U-SIG SRP2, which respectively indicate the spatial reuse parameters of the lower frequency half and the higher frequency half across the entire bandwidth. The value of the SRP1 field is indicated by the uplink spatial reuse field in the trigger frame. In one example, the U-SIG SRP1 field may be equal to the minimum value or any value of the four spatial reuse fields indicated by the spatial reuse field. The value of the U-SIG SRP2 field is indicated by the uplink EHT spatial reuse field in the trigger frame.

[0149] In yet another embodiment, as shown in FIG. 12c, the U-SIG includes two SRP fields, represented by U-SIG SRP1 and U-SIG SRP2.

[0150] When the bandwidth is 20 / 40 / 80 / 160 MHz and the TB PPDU is a non-aggregated PPDU, the uplink spatial reuse field indicates only two SRP fields. The value of the U-SIG SRP1 field may be equal to the minimum value or any one of the values of the UL SRP1 field and the UL SR2 field within the four spatial reuse fields indicated by the spatial reuse field. The value of the U-SIG SRP2 field may be equal to the minimum value or any value of the UL SR3 field and the UL SR4 field within the four spatial reuse fields indicated by the spatial reuse field. In this case, the uplink EHT spatial reuse field is reserved or does not exist.

[0151] If the bandwidth is 320 MHz or the TB PPDU is an aggregated PPDU, the uplink spatial reuse field indicates the SRP1 fields within two SRPs. The value of the U-SIG SRP1 field may be equal to the minimum value of the four spatial reuse fields indicated by the spatial reuse field, and the value of the U-SIG SRP2 field is equal to the value indicated by the uplink EHT spatial reuse field.

[0152] S304: The AP receives the EHT TB PPDU transmitted by the station.

[0153] In one embodiment, the trigger frame is used not only to trigger an EHT station to transmit an EHT TB PPDU but also to trigger an HE station to transmit an HE TB PPDU. Alternatively, the trigger frame may be used only to trigger an EHT station to transmit an EHT TB PPDU or only to trigger an HE station to transmit an HE TB PPDU. This embodiment of the present application focuses on the case where the trigger frame is used to trigger an EHT station to transmit an EHT TB PPDU, but is not limited to the case where the trigger frame is used only to trigger an EHT station to transmit an EHT TB PPDU, and may further include cases where the trigger frame is used to trigger an EHT station to transmit an EHT TB PPDU and at the same time trigger an HE station / EHT station to transmit an HE TB PPDU.

[0154] In one embodiment, the U-SIG of the EHT TB PPDU may include only one spatial reuse parameter (SRP) field, such as the SRP1 field, or may include two spatial reuse parameter (SRP) fields, namely the SRP1 field and the SRP2 field. The SRP1 field and the SRP2 field respectively indicate the SRP values of different subchannels, and the SRP value is equal to the sum of the transmission power of the AP in the corresponding subchannel and the maximum interference power that can be received by the AP. It should be understood that the SRP1 field and the SRP2 field in the U-SIG of the EHT TB PPDU may have other names, such as the PSR1 field and the PSR2 field. This is not limited in this embodiment of the present application.

[0155] The uplink spatial reuse field in the common information field of the trigger frame further includes four UL SRP fields, namely the UL SRP1 field, the UL SRP2 field, the UL SRP3 field, and the UL SRP4 field. The uplink EHT spatial reuse field in the common information field of the trigger frame is represented by UL EHT SRP. The spatial reuse fields in the U-SIG of the EHT TB PPDU are represented by SRP1 and SRP2.

[0156] In actual applications, it should be understood that when Embodiment 2 of the present application is implemented with reference to Embodiment 1 in bandwidths of 20 / 40 / 80 / 160 / 320 MHz, the settings of the UL SRP1 field to the UL SRP4 field in the trigger frame, and the settings of the SRP1 field and the SRP2 field in the U-SIG of the EHT TB PPDU can be summarized in Table 7. The " / " in Table 7 represents an "or" relationship.

[0157]

Table 7

[0158] In the scenario of the aggregated PPDU, it should be understood that the bandwidths of the HE TB PPDU and the EHT TB PPDU are 160 MHz respectively, or the bandwidth of the HE TB PPDU is 80 MHz, and the bandwidth of the EHT TB PPDU is either 160 MHz or 320 MHz with 80 MHz punctured.

[0159] In the scenario of the aggregated PPDU, it should be further understood that the setting of the spatial reuse parameters in the HE-SIG-A of the HE TB PPDU complies with the prior art. Details are not repeated here.

[0160] In this embodiment of the present application, it can be found that the value of the uplink spatial reuse field UL SRP in the trigger frame is used, or the HE-SIG-A2 reserved field and / or the reserved field in the trigger frame are further used as the UL EHT spatial reuse field to instruct to set the SRP field of the U-SIG. The spatial reuse field in the U-SIG of the EHT TB PPDU is set, and as a result, the trigger frame can be used to schedule the EHT station to transmit the uplink EHT TB PPDU, and the same trigger frame can be used to schedule the HE station and the EHT station.

[0161] Embodiment 3 Embodiment 3 of the present application mainly describes a technical solution in which the trigger frame holds a special user information field and individually instructs the spatial reuse parameters and the U-SIG reserved field for the EHT TB PPDU, and a method for setting the spatial reuse parameters and the U-SIG reserved field of the EHT TB PPDU when the trigger frame does not hold a special user information field.

[0162] In actual applications, for the method of setting the SRP1 field and the SRP2 field in the U-SIG with bandwidths of 20 MHz, 40 MHz, 80 MHz, and 160 MHz in Embodiment 3 of the present application, it can be understood that it may be implemented with reference to Embodiment 1 or Embodiment 2 described above. Embodiment 3 of the present application may alternatively be implemented individually. This is not limited in this embodiment of the present application.

[0163] Please refer to FIGS. 13A and 13B. In the trigger frame shown in FIGS. 13A and 13B, the common information field of the trigger frame may include four UL SRP fields: a UL SRP1 field, a UL SRP2 field, a UL SRP3 field, and a UL SRP4 field. The four UL SRP fields may respectively indicate the values of the four SRP fields in the HE TB PPDU.

[0164] The user information list field of the trigger frame includes a plurality of user information fields, and one of the user information fields is a special user information field, represented by user info(STA 1).

[0165] In one embodiment, the special user information field may include a UL SRP field and a U-SIG reservation indication field. The UL SRP field indicates the values of the SRP1 field and the SRP2 field in the U-SIG of the EHT TB PPDU, or the UL SRP field of the special user information field indicates the value of the SRP2 field in the U-SIG of the EHT TB PPDU. The U-SIG reservation indication field indicates the value of the U-SIG reservation field in the U-SIG of the EHT TB PPDU.

[0166] In another embodiment, the special user information field does not include the UL SRP field, but may include the U-SIG reservation indication field. The value of the SRP1 field and / or the SRP2 field in the U-SIG of the EHT TB PPDU is indicated by the UL SRP1 field, the UL SRP2 field, the UL SRP3 field, and the UL SRP4 field in the common information field of the trigger frame, or is indicated by the UL EHT SRP field of HE-SIG-A2 in the common information field. The U-SIG reservation indication field indicates the value of the U-SIG reservation field in the U-SIG of the EHT TB PPDU.

[0167] In one embodiment, the value of the association identifier (AID) 12 field of the special user information field is a preset value. The preset value may be any one of 2008 to 2044 or 2046 to 4095. For example, the preset value is 2044. Alternatively, the preset value may be an AID (e.g., 2007) that is not assigned to any associated STA and is within the range of 1 to 2007.

[0168] In yet another embodiment, the special user information field does not need to hold the complete value of the AID12. Only the most significant bit needs to be set to 1, and one of the subsequent 11 bits is fixed to 0, so that the value can be distinguished from the existing values that are already in use and are the values of the AID12. The other 10 bits can be used for information transmission.

[0169] In the 802.11ax standard, the trigger frame holds a 9-bit UL HE-SIG-A2 reserved field. However, until the 802.11ax standard was established, the HE-SIG-A2 reserved bits were not redefined, and the 9 bits were wasted. In the 802.11be standard, as shown in Figure 9, in addition to SRP1 and SRP4, the U-SIG part of the EHT TB PPDU further includes a U-SIG reserved field, that is, 12 bits are reserved. The values of the 12 reserved bits need to be indicated by the trigger frame. This is why the trigger frame requires an uplink U-SIG reservation indication field held by a special user information field. If the bits corresponding to the U-SIG reserved field in the U-SIG of the EHT TB PPDU use default values, there is no need for the value to be indicated by the trigger frame. Instead, if necessary, the uplink U-SIG reservation indication field of the special user information field in the trigger frame indicates a specific value. In this way, the bit overhead of the trigger frame is reduced. If no indication in the trigger frame is required in a release later than 802.11be, in 802.11be, the trigger frame does not need to hold a special user information field.

[0170] It should be understood that the special user information field may not exist in Release 1 (R1) released in 802.11be. However, devices supporting R1 need to be able to read the special user information field. If the special user information field exists, the default value cannot be used, and the value specified by the special user field must be used. This avoids the situation where the AP or a third-party station cannot correctly receive the U-SIG due to mutual interference caused by different U-SIG contents when devices supporting R1 and devices supporting R2 jointly transmit the U-SIG.

[0171] As a conclusion, whether there is a special user information field and what it means are shown in Table 8.

[0172]

Table 8

[0173] Note that when U-SIG has only one SRP field, the reserved field becomes 16 bits. When U-SIG has two SRP fields, the reserved field is 12 bits.

[0174] Part of the value of the U-SIG reserved field of the EHT TB PPDU is indicated by the special user field in the trigger frame, and part of the value is indicated by the uplink HE-SIG-A2 reserved field and / or the reserved field. If the meaning of some reserved fields needs to be changed in subsequent standards, the reserved values corresponding to the HE-SIG-A2 reserved field and / or the reserved field may be preferentially changed. In this way, the bit overhead of the trigger frame can be reduced without the need to retain the special user field.

[0175] It should be understood that either or both of the uplink universal signal reservation indication field and the physical layer version field included in the special user information field shown in Table 8 may exist. It should be further understood that the sub-fields in Table 8 may have other names. This is not limited to the examples in this application. The number of bits occupied by each sub-field and corresponding to each sub-field is merely an example. In this embodiment of this application, a different number of bits may be further set for the sub-field.

[0176] FIG. 14 is a schematic flowchart of a trigger frame transmission method and a corresponding PPDU transmission method according to an embodiment of this application. As shown in FIG. 14, the trigger frame transmission method and the corresponding PPDU transmission method include, but are not limited to, the following steps.

[0177] S401: The AP sends a trigger frame, which is used to trigger the station to send an EHT TB PPDU. The trigger frame further holds second indication information, and the second indication information indicates the value of the U-SIG reservation field within the U-SIG of the EHT TB PPDU.

[0178] The trigger frame further holds first indication information, and the first indication information indicates the value of the SRP1 field and / or the SRP2 field within the U-SIG of the EHT TB PPDU.

[0179] S402: The STA receives the trigger frame.

[0180] S403: The STA sends an EHT TB PPDU, and the value of the U-SIG reservation field within the U-SIG of the EHT TB PPDU is a default value or is determined based on the second indication information. The value of the SRP1 field and / or the SRP2 field within the U-SIG of the EHT TB PPDU is determined based on the first indication information.

[0181] S404: The AP receives the EHT TB PPDU sent by the station.

[0182] Optionally, the trigger frame is used not only to trigger the EHT station to transmit an EHT TB PPDU, but may also be used to trigger the HE station to transmit an HE TB PPDU. Alternatively, the trigger frame is used only to trigger the EHT station to transmit an EHT TB PPDU, or is used only to trigger the HE station to transmit an HE TB PPDU. This embodiment of the present application focuses on the case where the trigger frame is used to trigger the EHT station to transmit an EHT TB PPDU, but is not limited to the case where the trigger frame is used only to trigger the EHT station to transmit an EHT TB PPDU, and may further include the case where the trigger frame is used to trigger the EHT station to transmit an EHT TB PPDU and at the same time trigger the HE station / EHT station to transmit an HE TB PPDU.

[0183] Optionally, the U-SIG of the EHT TB PPDU includes only two spatial reuse parameter (SRP) fields, namely the SRP1 field and the SRP2 field. The SRP1 field and the SRP2 field respectively indicate the SRP values of different subchannels, and the SRP value is equal to the sum of the transmission power of the AP in the corresponding subchannel and the maximum interference power that can be received by the AP. It should be understood that the SRP1 field and the SRP2 field in the U-SIG of the EHT TB PPDU may have other names, such as the PSR1 field and the PSR2 field. This is not limited in this embodiment of the present application.

[0184] The trigger frame can hold first indication information, and the first indication information can indicate the values of the SRP1 field and the SRP2 field in the U-SIG of the EHT TB PPDU, or the first indication information indicates the value of the SRP2 field in the U-SIG of the EHT TB PPDU.

[0185] In one embodiment, the first indication information may be arranged in the uplink spatial reuse field of the common information field of the trigger frame. For the method of setting the value of the SRP field in the U-SIG in the process of transmitting the EHT TB PPDU by the STA, refer to the description of Embodiment 1. The details will not be repeated here. In this embodiment, the trigger frame does not include the second indication information. Therefore, the U-SIG reservation field in the U-SIG part of the EHT TB PPDU is set to the default value. Alternatively, the trigger frame includes the second indication information, and the second indication information is arranged in the special user information field. Therefore, the U-SIG reservation field in the U-SIG part of the EHT TB PPDU is set to the value indicated by the second indication information.

[0186] In another embodiment, a part of the first indication information is arranged in the uplink spatial reuse field of the common information field of the trigger frame, and a part is arranged in the uplink EHT spatial reuse field of the common information field of the trigger frame. Alternatively, the first indication information is completely arranged in the uplink EHT spatial reuse field in the common information field of the trigger frame. For the method of setting the value of the SRP field in the U-SIG in the process of transmitting the EHT TB PPDU by the STA, refer to the description of Embodiment 2. The details will not be repeated here. In this embodiment, the trigger frame does not include the second indication information. Therefore, the U-SIG reservation field in the U-SIG part of the EHT TB PPDU is set to the default value. Alternatively, the trigger frame includes the second indication information, and the second indication information is arranged in the special user information field. Therefore, the U-SIG reservation field in the U-SIG part of the EHT TB PPDU is set to the value indicated by the second indication information.

[0187] In yet another embodiment, both the first indication information and the second indication information may be arranged in the user information field of the trigger frame, and the user information field is the special user information field.

[0188] In one embodiment, the above-mentioned special user information field does not need to hold the complete value of AID12. Only the most significant bit needs to be set to 1, and any one of the subsequent 11 bits is fixed to 0, so that the value can be distinguished from the existing values that are already the values of AID12 and have been used. The other 10 bits can be used for information transmission. In another embodiment, the value of the association identifier (AID) 12 field of the special user information field is a preset value. The preset value may be any one of 2007, 2008 to 2044, or 2046 to 4095. For example, the preset value is 2044. In addition, the second instruction information is also arranged in the special user information field.

[0189] For the EHT station, the AID12 field in the user information field within the trigger frame is set to a special value (e.g., AID12 = 2044 or 2207) or an unassigned AID, or the AID12 field is set to an incomplete AID12 value, so that the EHT station can identify that the user information field is used for the settings of the SRP field and the U-SIG reserved field within the U-SIG. In other words, the special user information field holds the first instruction information, which indicates the value of the SRP1 field and / or the SRP2 field within the U-SIG. The special user information field further holds the second instruction information, which indicates the value of the U-SIG reserved field within the U-SIG. The HE station does not analyze the user information field in which the AID12 field becomes a special value within the trigger frame, or it should be understood that the HE station receives the user information field in which the AID12 field becomes a special value and indicates that the field has nothing to do with the HE station. In other words, the first instruction information added to the trigger frame does not affect the behavior of the HE station.

[0190] When the first instruction information indicates the values of the SRP1 field and the SRP2 field in the U-SIG, the 8 bits after the AID12 field in the user information field are used to hold the first instruction information. The first 4 bits of the 8 bits indicate the value of the SRP1 field in the U-SIG, and the last 4 bits of the 8 bits indicate the value of the SRP2 field. It should be understood that the 8 bits may 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. In other words, the first field after the AID12 field indicates the value of the SRP1 field in the U-SIG, and the second field after the AID12 field indicates the value of the SRP2 field in the U-SIG. The first field may be referred to as the UL SRP1 field for the U-SIG, and the second field may be referred to as the UL SRP2 field for the U-SIG. It should be further understood that the first field and the second field may have other names. This is not limited in this embodiment of the present application.

[0191] After receiving the 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 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 field and the second field in the user information field of the trigger frame each correspond to a 160 MHz bandwidth. For example, the first field corresponds to the first 160 MHz bandwidth in ascending order of frequency, and the second field corresponds to the second 160 MHz bandwidth in ascending order of frequency. In other words, the SRP1 field in the U-SIG corresponds to the first 160 MHz bandwidth in ascending order of frequency, and the SRP2 field in the U-SIG corresponds to the second 160 MHz bandwidth in ascending order of frequency.

[0192] FIG. 15a is a schematic diagram showing the SRP in the U-SIG of the trigger frame according to an embodiment of the present application. As shown in FIG. 15a, the user information field of the trigger frame includes an AID12 field, a UL SRP1 field for U-SIG, a UL SRP2 field for U-SIG, a UL U-SIG reservation indication field, and the like. The value of the AID12 field is a special value. The UL SRP1 field for U-SIG and the UL SRP2 field for U-SIG are arranged after the AID12 field and may or may not be adjacent to the AID12 field. The UL SRP1 field for U-SIG indicates the value of the SRP1 field in the U-SIG, and the UL SRP2 field for U-SIG indicates the value of the SRP2 field in the U-SIG. The value indicated by the UL SRP1 field for U-SIG is equal to the sum of the transmission power of the AP in the primary 160 MHz channel and the maximum interference power that can be received by the AP. The value indicated by the UL SRP2 field for U-SIG is equal to the sum of the transmission power of the AP in the secondary 160 MHz channel and the maximum interference power that can be received by the AP. The UL U-SIG reservation indication field indicates the value of the U-SIG reservation field of the U-SIG when the STA transmits an EHT TB PPDU.

[0193] When the first indication information indicates only the value of the SRP2 field in the U-SIG, the 4 bits after the AID12 field in the user information field are used to hold the first indication information. In other words, the 4 bits indicate the value of the SRP2 field in the U-SIG. The 4 bits may be referred to as the UL SRP2 field for the U-SIG, and the 4 bits may have other names. This is not limited in this embodiment of the present application. Optionally, when the first indication information indicates only the value of the SRP2 field in the U-SIG, 4 reserved bits in the common information field of the trigger frame, for example, the HE-SIG-A2 reserved field or 4 reserved bits in the reserved field, may be used to hold the first indication information. In other words, the 4 reserved bits indicate the value of the SRP2 field in the U-SIG. The common information field of the trigger frame includes 4 UL SRP fields. After receiving the 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 minimum value of the 4 UL SRP field values included in the common information field of the trigger frame, that is, 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 for the U-SIG in the special user information field of the trigger frame. The SRP1 field in the U-SIG corresponds to the first 160 MHz bandwidth in ascending order of frequency, and the SRP2 field in the U-SIG corresponds to the second 160 MHz bandwidth in ascending order of frequency. The EHT station further sets the value of the U-SIG reserved field in the U-SIG of the transmitted EHT TB PPDU to the value of the UL U-SIG reserved indication field in the special user information field in the trigger frame.

[0194] FIG. 15b is another schematic diagram showing the SRP within the U-SIG of the trigger frame according to an embodiment of the present application. As shown in FIG. 15b, in one embodiment, the common information field of the trigger frame includes four UL SRP fields, and the four UL SRP fields respectively indicate the SRP values of four 40 MHz sub-channels in the primary 160 MHz channel in ascending order of frequency. Alternatively, in another embodiment, the HE-SIG-A2 reserved field and / or the reserved field of the common information field of the trigger frame are used as the UL EHT SRP field to indicate the SRP value of the primary 160 MHz channel. The special user information field of the trigger frame includes an AID12 field, a UL SRP2 field for U-SIG, etc. The value of the AID12 field is a special value or an incomplete AID12 value. The UL SRP2 field for U-SIG is arranged after the AID12 field and may or may not be adjacent to the AID12 field. The UL SRP2 field for U-SIG indicates the value of the SRP2 field within the U-SIG. The value indicated by the UL SRP2 field for U-SIG is equal to the sum of the transmission power of the AP in the secondary 160 MHz channel and the maximum interference power that can be received by the AP, or equal to the SRP value in the secondary 160 MHz channel.

[0195] After receiving the 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 minimum value of the four UL SRP fields included in the common information field of the trigger frame, that is, 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 for U-SIG in the special user information field of the trigger frame. The SRP1 field in the U-SIG corresponds to the first 160 MHz bandwidth in ascending order of frequency, and the SRP2 field in the U-SIG corresponds to the second 160 MHz bandwidth in ascending order of frequency. The EHT station further sets the value of the U-SIG reserved field in the U-SIG of the transmitted EHT TB PPDU to the value of the UL U-SIG reservation indication field in the special user information field in the trigger frame.

[0196] It should be understood that this embodiment of the present application mainly focuses on the method of setting the SRP1 field and the SRP2 field in the U-SIG in a 320 MHz bandwidth, and the method of setting the U-SIG reserved field in the U-SIG. For the method of setting the SRP1 field and the SRP2 field in the U-SIG with a bandwidth of 160 MHz or less, refer to the relevant descriptions in Embodiment 1 or Embodiment 2. Details are not repeated here.

[0197] In this embodiment of the present application, in the case of a 320 MHz bandwidth, it can be found that the special user information field in the trigger frame independently indicates the spatial reuse parameter and the U-SIG reservation field for 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, the HE station and the EHT station can be scheduled using the same trigger frame. When the trigger frame does not include the aforementioned special user information field, the spatial reuse parameter of the U-SIG of the EHT TB PPDU may be set based on the indication of the uplink spatial reuse field and / or the uplink EHT spatial reuse field in the trigger frame, and the U-SIG reservation field may be set to a default value.

[0198] In conclusion, in Embodiments 1 to 3 of the present application, the relationship between the U-SIG in the EHT TB PPDU and the trigger frame can be summarized as shown in Table 9.

[0199]

Table 9A

Table 9B

[0200] It should be understood that the sub-fields included in the U-SIG in Table 9 are merely examples, and some of the sub-fields may further be included. It should further be understood that the sub-fields in Table 9 may alternatively have other names. This is not limited to the examples of the present application. The number of bits occupied by each sub-field may be adjusted based on the actual situation. This is not limited in the present application.

[0201] Embodiment 4 Embodiments 1 to 3 described above explain how to set the SRP field and U-SIG reserved field of U-SIG when one or more stations transmit EHT TB PPDUs in different scenarios. Embodiment 4 of the present application mainly explains a spatial reuse method based on spatial reuse parameters in 802.11be.

[0202] In actual applications, it should be understood that Embodiment 4 of the present application may be implemented with reference to any one of Embodiments 1 to 3, or may be implemented individually. This is not limited in this embodiment of the present application.

[0203] In this embodiment of the present application, it should be understood that the first AP and the first STA belong to the same BSS, which is shown as BSS1. The second AP and the second STA belong to a different BSS, which is shown as BSS2. The first AP and the second AP are arranged within the OBSS formed by BSS1 and BSS2. Therefore, when the second AP transmits a parameterized spatial reuse transmission (PSRT) PPDU, the transmission power used by the second AP must be limited to reduce the interference to the reception of the EHT TB PPDU of the first AP caused by the energy generated when the second AP transmits the PSRT PPDU.

[0204] Optionally, in this embodiment of the present application, the second AP may receive the information transmitted by the first AP and the first STA.

[0205] FIG. 16 is a schematic flowchart of a spatial reuse method according to an embodiment of the present application. As shown in FIG. 16, the spatial reuse method includes the following steps, but is not limited thereto.

[0206] S501: The first AP transmits a Parameterized Spatial Reuse Reception (PSRR) PPDU that includes a trigger frame, and the trigger frame is used to schedule the first STA to transmit an EHT TB PPDU. Correspondingly, the first STA receives the trigger frame.

[0207] It should be understood that the PSRR PPDU may further include other information in addition to the trigger frame. However, this embodiment of the present application focuses on the trigger frame portion within the PSRR PPDU. Therefore, other information included in the PSRR PPDU is not described in this embodiment of the present application.

[0208] Specifically, the PSRR PPDU including the 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 FIGS. 6a-1, 6a-2, or FIGS. 10A and 10B, the common information field of the trigger frame includes an Uplink Spatial Reuse (UL Spatial Reuse) field. The Uplink Spatial Reuse field may include four Uplink Spatial Reuse Parameter (UL SRP) fields with a length of 4 bits, indicating the sum of the transmission power of the AP and the maximum interference power that can be received by the AP. The four UL SRP fields included in the Uplink Spatial Reuse field are the UL SRP1 field, the UL SRP2 field, the UL SRP3 field, and the UL SRP4 field. For the embodiments of the four UL SRP fields in different bandwidths, please refer to any one of Embodiment 1 to Embodiment 3. Details are not repeated here.

[0209] S502: The first STA transmits an EHT TB PPDU. Correspondingly, the first AP receives the EHT TB PPDU transmitted by the station.

[0210] The "first AP" in this embodiment of the present application is the "AP" described in Embodiments 1 to 3, and the "first STA" in this embodiment of the present application is the "STA" described in Embodiments 1 to 3.

[0211] Specifically, for the implementation manner of step S502 in this embodiment of the present application, refer to the implementation manner of step S103 in Embodiment 1. Details are not repeated here. Alternatively, for the implementation manner of step S502 in this embodiment of the present application, refer to the implementation manner of step S203 in Embodiment 2. Details are not repeated here. Alternatively, for the implementation manner of step S502 in this embodiment of the present application, refer to the implementation manner of step S303 in Embodiment 3. Details are not repeated here.

[0212] S503: The second AP determines the transmission power of the parameterized spatial reuse transmission PSRT PPDU based on the values individually indicated by the SRP1 field and the SRP2 field included in the U-SIG of the EHT TB PPDU, and / or the values individually indicated by the four UL SRP fields included in the common information field of the trigger frame.

[0213] S504: The second AP transmits the PSRT PPDU based on the transmission power of the PSRT PPDU. Correspondingly, the second STA receives the PSRT PPDU.

[0214] Specifically, the first AP and the second AP are arranged within an OBSS formed by BSS1 and BSS2. Therefore, the second AP can also receive the trigger frame transmitted by the first AP. Therefore, after the first AP transmits a PSRR PPDU including a trigger frame, the second AP receives a PSRR PPDU including a trigger frame. The trigger frame includes 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 that can be received by the first AP. The second AP may further receive an EHT TB PPDU transmitted by the first STA, and the U-SIG of the EHT TB PPDU includes an SRP1 field and an SRP2 field. The value indicated by the SRP1 field is equal to the sum of the transmission power of the first AP in the first subchannel and the maximum interference power that can be received by the first AP. The value indicated by the SRP2 field is the sum of the transmission power of the first AP in the second subchannel and the maximum interference power that can be received by the first AP. The bandwidth value of the first subchannel and the bandwidth value of the second subchannel are equal to half of the bandwidth of the EHT TB PPDU, and the frequency of the first subchannel is less than the frequency of the second subchannel.

[0215] After the second AP receives the PSRR PPDU and the EHT TB PPDU (i.e., it is determined that the first STA has transmitted the EHT TB PPDU), the second AP calculates the transmission power to be used for transmitting the PSRT PPDU based on the power at which the PSRR PPDU was received (i.e., the received power level, RPL), the values individually indicated by the SRP1 field and the SRP2 field included in the U-SIG, and / or the values individually indicated by the four UL SRP fields. The second AP transmits the PSRT PPDU based on the calculated transmission power. Correspondingly, the second STA receives the PSRT PPDU and returns a response frame to the second AP in response to the PSRT PPDU.

[0216] FIG. 17 is a schematic diagram of a time series of a spatial reuse method according to an embodiment of the present application. It is assumed that AP1 and AP2 are arranged within the same OBSS, AP1 and STA1 belong to BSS1, and AP2 and STA2 belong to BSS2. As shown in FIG. 14, AP1 (i.e., the first AP described above) transmits a PSRR PPDU including a trigger frame. After receiving the PSRR PPDU, STA1 (i.e., the first STA described above) transmits an uplink EHT TB PPDU based on the instruction of the trigger frame after a certain period (e.g., a short inter-frame space). Since AP1 and AP2 are arranged within the same OBSS, AP2 can receive the PSRR PPDU transmitted by AP1 and the EHT TB PPDU transmitted by the STA. After AP2 (i.e., the second AP) receives the PSRR PPDU and the EHT TB PPDU, AP2 calculates the power used by AP2 to transmit the PSRT PPDU based on the power (i.e., RPL) when the PSRR PPDU was received and the two SRP values and / or four UL SRP values within the EHT TB PPDU. After detecting that the EHT TB PPDU has been transmitted, AP2 transmits the PSRT PPDU based on the calculated power. After receiving the PSRT PPDU, STA2 (i.e., the second STA) transmits a block acknowledge frame at a certain time interval (e.g., a short inter-frame space) to acknowledge that STA2 has received the PSRT PPDU.

[0217] Optionally, the transmission power of the PSRT PPDU obtained by the second AP through calculation satisfies the following formula. (PPDU transmission power used by the second AP to transmit the PSRT PPDU) - log 10 (PSRT PPDU bandwidth / 20 MHz) ≤ SRP - RPL (1 - 1)

[0218] log in formula (1 - 1) 10(PSRT PPDU Bandwidth / 20MHz) 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 transmit power at the receive antenna connector, over the PSRR PPDU bandwidth, during the non-HE portion of the HE PPDU preamble of the triggering PPDU, averaged over all antennas used to receive the PPDU (RPL is the combined transmit power at the receive antenna connector, over the PSRR PPDU bandwidth, during the non-HE portion of the HE PPDU preamble of the triggering PPDU, averaged over all antennas used to receive the PPDU). Bandwidth normalization is performed in Equation (1-1) with the values of SRP and PRL. It should be understood that since the value indicated by the UL SRP field is equal to the sum of the transmit power of the AP (here the first AP) and the maximum interference power that can be received by the AP (here the first AP), the maximum interference power that can be received by the AP (here the first AP) is determined by the value of the spatial reuse parameter (SRP).

[0219] Optionally, the second AP may obtain the RPL using a PSRR PPDU, without obtaining the UL SRP within the PSRR PPDU, but obtain the SRP using the U-SIG of the EHT TB PPDU. Specifically, the second AP calculates the transmission power to be used for transmitting a PSRT PPDU based on the power at the time when the PSRR PPDU is received (i.e., the RPL) and the values individually indicated by the SRP1 field and the SRP2 field included in the U-SIG. Alternatively, the second AP may obtain both the RPL and the UL SRP using the PSRR PPDU, and when it is determined that the EHT TB PPDU has been received, the second AP does not obtain the SRP within the U-SIG. Specifically, the second AP calculates the transmission power to be used for transmitting a PSRT PPDU based on the power at the time when the PSRR PPDU is received (i.e., the RPL) and the values individually indicated by the four UL SRP fields.

[0220] Optionally, the aforementioned formula (1-1) may be equivalent to the following formula (1-2). Normalized transmission power of the second AP ≤ Transmission power of the first AP + Maximum interference power received by the first AP - Power when the second AP receives the PSRR PPDU transmitted by the first AP (1-2)

[0221] The right side of formula (1-2), that is, the transmission power of the first AP minus the power when the second AP receives the PSRR PPDU transmitted by the first AP, is equal to the path loss between the first AP and the second AP.

[0222] Therefore, formula (1-2) may alternatively be equivalent to the following formula (1-3). Normalized transmission power of the second AP ≤ Maximum interference power received by the first AP + Path loss between the first AP and the second AP (1-3)

[0223] Formula (1-3) may alternatively be equivalent to the following formula (1-4). Transmitted power normalization of the second AP - Path loss between the first AP and the second AP ≤ Maximum interference power received by the first AP (1-4)

[0224] The left side of Equation (1-4), that is, the transmitted power normalization of the second AP minus the path loss between the first AP and the second AP, represents the interference caused by the second AP to the first AP. Therefore, Equation (1-4) can be equivalent to the following Equation (1-5). Interference caused by the second AP to the first AP ≤ Maximum interference power received by the first AP (1-5)

[0225] This embodiment of the present application provides a spatial reuse method for EHT TB PPDU. As a result, compatibility can be obtained when there are two SRP fields in the U-SIG, and it can be found that spatial utilization is implemented according to the EHT standard. In this way, devices within the overlapping basic service set can perform transmissions simultaneously to improve transmission efficiency.

[0226] In an optional embodiment, the spatial reuse method provided in the present application may be applied to the second STA. FIG. 18 is another schematic flowchart of the spatial reuse method according to an embodiment of the present application. In this embodiment of the present application, it will be understood that the first AP and the first STA belong to the same BSS, which is shown as BSS1. The second AP and the second STA belong to another BSS, which is shown as BSS2. The first AP and the second STA are arranged within the OBSS formed by BSS1 and BSS2. Therefore, in order to reduce the 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, the transmission power used when the second STA transmits the response frame must be restricted.

[0227] Optionally, in this embodiment of the present application, the second STA may receive the information transmitted by the first AP and the first STA.

[0228] As shown in FIG. 18, the spatial reuse method includes, but is not limited to, the following steps.

[0229] S601: The first AP transmits a parameterized spatial reuse received PSRR PPDU including a trigger frame, and the trigger frame is used to schedule the first STA to transmit an EHT TB PPDU. Correspondingly, the first STA receives the trigger frame.

[0230] S602: The first STA transmits an EHT TB PPDU. Correspondingly, the first AP receives the EHT TB PPDU transmitted by the station.

[0231] Specifically, for the implementation manners of step S601 and step S602 in this embodiment of the present application, refer to the implementation manners of step S501 and step S502 in the embodiment shown in FIG. 16. Details are not repeated here.

[0232] S603: The second AP transmits a PSRT PPDU. Correspondingly, the second STA receives the PSRT PPDU.

[0233] S604: The second STA determines the transmission power of the response frame in response to the PSRT PPDU based on one or more of the values individually indicated by the SRP1 field and the SRP2 field included in the U-SIG of the EHT TB PPDU, the values individually indicated by the four UL SRP fields included in the common information field of the trigger frame, and the value indicated by the UL EHT SRP field.

[0234] S605: The second STA transmits a response frame based on the transmission power of the response frame.

[0235] Specifically, for the implementation manners of step S604 and step S605 in this embodiment of the present application, refer to the implementation manners of step S503 and step S504 in the embodiment shown in FIG. 16. Details are not repeated here. It should be understood 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, refer to the method of determining the transmission power of the PSRT PPDU in step S503. Details are not repeated here.

[0236] Optionally, a second AP may be further arranged within the OBSS formed by BSS1 and BSS2. Therefore, in order to reduce the 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 restricted. Therefore, when the first AP, the second STA, and the second AP are all arranged within the OBSS formed by BSS 1 and BSS2, before the second AP transmits the PSRT PPDU (that is, before step S603), the second AP can determine the transmission power of the PSRT PPDU based on one or more of the values individually indicated by the SRP1 field and the SRP2 field included in the U-SIG of the EHT TB PPDU, the values individually indicated by the four UL SRP fields included in the common information field of the trigger frame, and the value indicated by the UL EHT SRP field. In this case, S603 specifically transmits the PSRT PPDU based on the transmission power of the PSRT PPDU.

[0237] This embodiment of the present application provides a spatial reuse method for EHT TB PPDU. As a result, compatibility can be obtained when there is one SRP field or two SRP fields in the U-SIG, and it can be found that spatial utilization is implemented according to the EHT standard. In this way, devices within the overlapping basic service set can execute transmissions simultaneously to improve transmission efficiency.

[0238] The above content describes in detail the method provided in this application. To facilitate the implementation of the aforementioned solutions in the embodiments of this application, the embodiments of this application further provide corresponding devices or apparatuses.

[0239] In this embodiment of the present application, the AP and the STA may be divided into functional modules based on the aforementioned method examples. For example, the functional modules may be obtained through division based on corresponding functions, or two or more functions may be integrated into one processing module. The integrated module may be implemented in the form of hardware or in the form of a software functional module. It should be noted that in the embodiments of the present application, the module division is only an example and is merely a logical function division. In actual implementation manners, other division methods may be used. Hereinafter, with reference to FIGS. 19 to 22, the communication devices in the embodiments of the present application will be described in detail. The communication device is an access point or a station. Further, the communication device may be a device within the AP, or the communication device may be a device within the STA.

[0240] When the integrated unit is used, FIG. 19 is a schematic diagram of the structure of a communication device 1 according to an embodiment of the present application. The communication device 1 may be an AP or a chip within the AP, such as a Wi-Fi chip. As shown in FIG. 19, the communication device 1 includes a transceiver unit 11 and a processing unit 12.

[0241] In the first design, the processing unit 12 is configured to generate a trigger frame, and the trigger frame is used to trigger the station to transmit an EHT TB PPDU. The transceiver unit 11 is further configured to receive the EHT TB PPDU transmitted by the station. The values indicated by the spatial reuse parameter SRP1 field and the SRP2 field in the universal signal field U-SIG of the EHT TB PPDU are respectively determined based on the values indicated by one or more uplink spatial reuse parameter UL SRP fields in the common information field of the trigger frame. Specifically, refer to the description of the EHT TB PPDU in step S103 of the foregoing embodiment 1. Details are not repeated here.

[0242] In the second design, the processing unit 12 is configured to generate a trigger frame, and the transceiver unit 11 is configured to transmit the trigger frame. The trigger frame is used to trigger the station to transmit an EHT TB PPDU. The common information field of the trigger frame includes four UL SRP fields, and the HE-SIG A2 reserved field and the reserved field of the common information field are used as indications of the UL EHT spatial reuse parameter and include the UL EHT SRP field.

[0243] The transceiver unit 11 is further configured to receive the EHT TB PPDU transmitted by the station, and the U-SIG of the EHT TB PPDU includes two SRP fields, namely the SRP1 field and the SRP2 field.

[0244] When the bandwidth of the EHT TB PPDU is 20 / 40 / 80 / 160 MHz and the EHT TB PPDU is a non-aggregated PPDU, the value of the SRP1 field in the U-SIG is equal to the minimum value of the UL SR1 field and the UL SR2 field in the four spatial reuse fields indicated by the uplink spatial reuse field of the trigger frame, and can be expressed as SRP1 = min{UL SRP1, UL SRP2}.

[0245] The value of the SRP2 field in the U-SIG may be equal to the minimum value of the UL SR3 field and the UL SR4 field in the four spatial reuse fields indicated by the uplink spatial reuse field of the trigger frame, and can be expressed as SRP2 = min{SRP3, UL SRP4}.

[0246] In one embodiment, as shown in FIG. 8b, when the EHT bandwidth is 320 MHz or the TB PPDU is an aggregated PPDU, the value of the SRP1 field in the U-SIG is equal to the value of the SRP2 field, and both the SRP1 field and the SRP2 field are equal to the minimum value of the four spatial reuse fields indicated by the uplink spatial reuse field in the trigger frame, and SRP1 = SRP2 = min{UL SRP1, UL SRP2, UL SRP3, UL SRP4}.

[0247] Specifically, refer to the description of the EHT TB PPDU or the aggregated PPDU in step S203 of the foregoing embodiment 1. Details are not repeated here.

[0248] The communication device 1 in the first design and the communication device 1 in the second design may correspondingly execute embodiment 1, and it should be understood that the aforementioned operations or functions of the units in the communication device 1 are individually configured to perform the corresponding operations of the AP in embodiment 1 of the aforementioned method. For the sake of brevity, details are not described again here.

[0249] In the third design, the processing unit 12 generates a trigger frame, and the transceiver unit 11 is configured to transmit the trigger frame. The HE-SIG-A2 reservation field and the reservation field in the common information field of the trigger frame are set as the uplink EHT PPDU bandwidth subfield, the HE / EHT subfield, and the uplink EHT spatial reuse field. The uplink EHT spatial reuse field individually indicates the spatial reuse parameters in the EHT TB PPDU or is used together with the uplink spatial reuse field to indicate the spatial reuse parameters in the EHT TB PPDU. Specifically, refer to the description of the trigger frame in step S301 of the foregoing embodiment 2. Details are not repeated here.

[0250] The transceiver unit 11 is further configured to receive an EHT TB PPDU or an aggregated PPDU transmitted by the station, and the U-SIG of the EHT TB PPDU may include one SRP field or two SRP fields. Specifically, refer to the description of the EHT TB PPDU or the aggregated PPDU in step S303 of embodiment 2. Details are not repeated here.

[0251] The communication device 1 in the third design may correspondingly execute embodiment 2, and it should be understood that the foregoing operations or functions of the units in the communication device 1 are individually configured to perform the corresponding operations of the AP in embodiment 2 of the foregoing method. For the sake of brevity, details are not described again here.

[0252] In the fourth design, the processing unit 12 is configured to generate a trigger frame. The transceiver unit 11 is configured to transmit the trigger frame, and the trigger frame is used to trigger a station to transmit an EHT TB PPDU. The trigger frame holds first indication information, and the first indication information indicates the values of the SRP1 field and / or the SRP2 field within the U-SIG of the EHT TB PPDU. Optionally, the trigger frame further holds second indication information, and the second indication information indicates the value of the U-SIG reserved field within the U-SIG of the EHT TB PPDU. Specifically, refer to step S401 of Embodiment 3 and the description of the trigger frame in this embodiment. Details are not repeated here.

[0253] The transceiver unit 11 is further configured to receive an EHT TB PPDU transmitted by a station. For the settings of the SRP field and the U-SIG reserved field within the U-SIG of the EHT TB PPDU, refer to the description of Embodiment 3. Details are not repeated here.

[0254] The communication device 1 in the fourth design may correspondingly execute Embodiment 4, and it should be understood that the aforementioned operations or functions of the units within the communication device 1 are individually configured to perform the corresponding operations of the AP in Embodiment 4 of the aforementioned method. For the sake of brevity, details are not described again here.

[0255] FIG. 20 is a schematic diagram of the structure of a communication device 2 according to an embodiment of the present application. The communication device 2 may be a STA or a chip within a STA, such as a Wi-Fi chip. As shown in FIG. 17, the communication device 2 includes a transceiver unit 21 and a processing unit 22.

[0256] 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 the EHT TB PPDU, and the U-SIG of the EHT TB PPDU includes a U-SIG reservation field and an SRP1 field, or includes an SRP1 field and an SRP2 field.

[0257] Optionally, the processing unit 22 includes a U-SIG reservation field setting subunit 221 and an SRP field setting subunit 222.

[0258] The U-SIG reservation field setting subunit 221 is configured to set the value of the U-SIG reservation field, and the value of the U-SIG reservation field is determined based on whether the trigger frame holds a special user information field. If the trigger frame does not hold a special user information field, the value of the U-SIG reservation field is set to a default value. If the trigger frame holds a special user information field, the value of the U-SIG reservation field is determined based on the value of the U-SIG reservation instruction field within the special user information field.

[0259] The SRP field setting subunit 222 is configured to set the values of the SRP1 field and the SRP2 field within the U-SIG of the EHT TB PPDU.

[0260] The values of the SRP1 field and the SRP2 field are respectively determined based on one or more of the values indicated by one or more UL SRP fields within the common information field of the trigger frame, the value indicated by the UL EHT SRP field, and the value indicated by the UL SRP field within the special user information field of the trigger frame.

[0261] In the first design, the communication device 2 may execute in correspondence with Embodiments 1 to 3. It should be understood that the aforementioned operations or functions of the units within the communication device 2 are individually configured to perform the corresponding operations of the STA in Embodiments 1 to 3 of the aforementioned method. For the sake of brevity, the details are not described again here.

[0262] FIG. 21 is a schematic diagram of the structure of a communication device 3 according to an embodiment of the present application. The communication device 3 may be an AP or a STA. Further, the communication device 3 may be a chip within the AP or the STA, for example, a Wi-Fi chip. As shown in FIG. 21, the communication device 3 may include a determination unit 31 and a transceiver unit 32.

[0263] In the design, the communication device 3 is an AP or a chip within the AP. The determination unit 31 is configured to determine the transmission power of the PSRT PPDU based on one or more of the values individually indicated by the SRP1 field and the SRP2 field included in the U-SIG of the EHT TB PPDU, the values individually indicated by the four UL SRP fields included in the common information field of the trigger frame, and the value indicated by the UL EHT SRP field in the HE-SIG-A2 of 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.

[0264] Optionally, the transceiver unit 32 is further configured to receive a trigger frame, and the trigger frame includes four UL SRP fields. The value indicated by one UL SRP field is the sum of the transmission power of the first AP in one subchannel and the maximum interference power received by the first AP. The communication device 3 and the first AP are arranged within the same OBSS. The first AP refers to the AP that transmits the trigger frame.

[0265] Optionally, the transceiver unit 32 is further configured to receive an EHT TB PPDU, and the U-SIG of the EHT TB PPDU includes an SRP1 field and an SRP2 field. The value indicated by the SRP1 field is the sum of the transmission power of the first AP in the first subchannel and the maximum interference power that can be received by the first AP. The value indicated by the SRP2 field is the sum of the transmission power of the first AP in the second subchannel and the maximum interference power that can be received by the first AP. The bandwidth of the first subchannel and the bandwidth of the second subchannel are equal to half of the bandwidth of the EHT TB PPDU, and the frequency of the first subchannel is less than the frequency of the second subchannel. The communication device 3 and the first AP are arranged within the same OBSS.

[0266] In this design, the communication device 3 may correspondingly execute the methods of FIGS. 13A and 13B. It should be understood that the aforementioned operations or functions of the units within the communication device 3 are individually configured to perform the corresponding operations of the second AP in FIGS. 13A and 13B. For the sake of brevity, the details are not described again here.

[0267] In another design, the communication device 3 is a STA or a chip within the STA. The determination unit 31 is configured to determine the transmission power of the response frame in response to the PSRT PPDU based on one or more of the values individually indicated by the SRP1 field and the SRP2 field included in the U-SIG of the EHT TB PPDU, the values individually indicated by the four UL SRP fields included in the common information field of the trigger frame, and the value indicated by the UL EHT SRP field in the HE-SIG-A2 of 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.

[0268] 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 in one subchannel and the maximum interference power received by the first AP. The communication device 3 and the first AP are arranged within the same OBSS. The first AP refers to the AP that transmits the trigger frame.

[0269] Optionally, the transceiver unit 32 is further configured to receive an EHT TB PPDU, and the U-SIG of the EHT TB PPDU includes an SRP1 field and an SRP2 field. The value indicated by the SRP1 field is the sum of the transmission power of the first AP in the first subchannel and the maximum interference power that can be received by the first AP. The value indicated by the SRP2 field is the sum of the transmission power of the first AP in the second subchannel and the maximum interference power that can be received by the first AP. The bandwidth of the first subchannel and the bandwidth of the second subchannel are equal to half of the bandwidth of the EHT TB PPDU, and the frequency of the first subchannel is less than the frequency of the second subchannel. The communication device 3 and the first AP are arranged within the same OBSS.

[0270] Optionally, the transceiver unit 32 is further configured to receive a PSRT PPDU transmitted by the second AP.

[0271] In any one of the above-described designs, the determination unit 31 may be a processing unit.

[0272] The communication device 3 in this design may correspondingly execute the method in FIG. 18. It should be understood that the above-described operations or functions of the units in the communication device 3 are individually configured to perform the corresponding operations of the second STA in FIG. 18. For the sake of brevity, the details are not described again here.

[0273] The above has described the AP and STA in the embodiments of the present application. Below, possible product forms of the AP and STA will be described. It should be understood that any product having the functions of the AP described in FIG. 19, any product having the functions of the STA described in FIG. 20, or any product having the functions of the AP or STA described in FIG. 21 falls within the scope of protection 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.

[0274] In possible product forms, the AP and STA in the embodiments of the present application can be implemented using a general bus architecture.

[0275] For ease of explanation, FIG. 22 shows a schematic diagram of the structure of a communication device 1000 according to an embodiment of the present application. The communication device 1000 may be an AP or STA, or a chip within an AP or STA. FIG. 22 shows only the main components of the communication device 1000. In addition to the processor 1001 and the transceiver 1002, the communication device may further include a memory 1003 and an input / output device (not shown).

[0276] The processor 1001 is mainly configured to process communication protocols and communication data, control the communication device, execute software programs, and process data of software programs. The memory 1003 is mainly configured to store software programs and data. The transceiver 1002 can include a control circuit and an antenna. The control circuit is mainly configured to perform conversion between baseband signals and radio frequency signals and process radio frequency signals. The antenna is mainly configured to receive and transmit radio frequency signals in the form of electromagnetic waves. An input / output device such as a touch screen, a display, or a keyboard is mainly configured to receive data input by a user and output data to the user.

[0277] After the communication device is powered on, the processor 1001 can read the software program in the memory 1003, interpret and execute the instructions of the software program, and process the data of the software program. When it is necessary to transmit data wirelessly, after performing baseband processing on the data to be transmitted, the processor 1001 outputs the baseband signal to the radio frequency circuit. After performing radio frequency processing on the baseband signal, the radio frequency circuit transmits a radio frequency signal in the form of an electromagnetic wave via the antenna. When data is transmitted to the communication device, the radio frequency circuit receives the radio frequency signal via the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 1001. The processor 1001 converts the baseband signal into data and processes the data.

[0278] In another embodiment, the radio frequency circuit and the antenna may be arranged independently of the processor that performs baseband processing. For example, in a distributed scenario, the radio frequency circuit and the antenna may be separately arranged independently of the communication device.

[0279] The processor 1001, the transceiver 1002, and the memory 1004 may be connected via a communication bus.

[0280] 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 transmitted in step S101 of FIG. 7a and / or may be configured to execute another process of the technology described herein. The transceiver 1002 may be configured to execute steps S101 and S104 of FIG. 7a and / or may be configured to execute another process of the technology described herein.

[0281] In another design, the communication device 1000 may be configured to perform the functions of the STA in Embodiment 1. The processor 1001 may be configured to generate an EHT TB PPDU transmitted in step S103 of FIG. 7a and / or may be configured to perform another process of the technology described herein. The transceiver 1002 may be configured to perform steps S102 and S103 of FIG. 7a and / or may be configured to perform another process of the technology described herein.

[0282] In a 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 a trigger frame transmitted in step S201 of FIG. 8a and / or may be configured to perform another process of the technology described herein. The transceiver 1002 may be configured to perform steps S201 and S204 of FIG. 8a and / or may be configured to perform another process of the technology described herein.

[0283] In another design, the communication device 1000 may be configured to perform the functions of the STA in Embodiment 1. The processor 1001 may be configured to generate an EHT TB PPDU transmitted in step S203 of FIG. 8a and / or may be configured to perform another process of the technology described herein. The transceiver 1002 may be configured to perform steps S202 and S203 of FIG. 8a and / or may be configured to perform another process of the technology described herein.

[0284] In a 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 a trigger frame transmitted in step S301 of FIG. 11 and / or may be configured to perform another process of the technology described herein. The transceiver 1002 may be configured to perform steps S301 and S304 of FIG. 11 and / or may be configured to perform another process of the technology described herein.

[0285] In another design, the communication device 1000 may be configured to perform the functions of the STA in Embodiment 2. The processor 1001 may be configured to generate the EHT TB PPDU transmitted in step S303 of FIG. 11, and / or may be configured to perform another process of the technology described herein. The transceiver 1002 may be configured to execute steps S302 and S303 of FIG. 11, and / or may be configured to perform another process of the technology described herein.

[0286] In a 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 S401 of FIG. 14, and / or may be configured to perform another process of the technology described herein. The transceiver 1002 may be configured to execute steps S401 and S404 of FIG. 14, and / or may be configured to perform another process of the technology described herein.

[0287] In another design, the communication device 1000 may be configured to perform the functions of the STA in Embodiment 3. The processor 1001 may be configured to generate the EHT TB PPDU transmitted in step S403 of FIG. 14, and / or may be configured to perform another process of the technology described herein. The transceiver 1002 may be configured to execute steps S402 and S403 of FIG. 14, and / or may be configured to perform another process of the technology described herein.

[0288] In a design, the communication device 1000 may be configured to execute the function of the second AP in Embodiment 4. The processor 1001 may be configured to execute step S503 in FIG. 16 and / or may be configured to execute another process of the technology described in this specification. The transceiver 1002 may be configured to execute step S504 in FIG. 16 and / or may be configured to execute another process of the technology described in this specification.

[0289] In a design, the communication device 1000 may be configured to execute the function of the second STA in Embodiment 4. The processor 1001 may be configured to execute step S604 in FIG. 18 and / or may be configured to execute another process of the technology described in this specification. The transceiver 1002 may be configured to execute step S605 in FIG. 18 and / or may be configured to execute another process of the technology described in this specification.

[0290] In any one of the above-described designs, the processor 1001 may include a transceiver configured to implement reception and transmission 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 the transmission and reception functions may be separated or integrated. 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.

[0291] In any one of the foregoing designs, the processor 1001 can store instructions. The instructions may be a computer program. The computer program is executed by the processor 1001, whereby the communication device 1000 can execute the method described in any one of the foregoing method embodiments. The computer program may be fixed within the processor 1000. In this case, the processor 1001 may be implemented by hardware.

[0292] In one embodiment, the communication device 1000 can include a circuit, and the circuit can implement the transmission, reception, or communication functions in the foregoing method embodiments. The processor and transceiver described in this application may be implemented by an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed-signal IC, an application specific integrated circuit (ASIC), or a printed circuit board (PCB), an electronic device, etc. The processor and transceiver may alternatively be manufactured using various IC technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), and gallium arsenide (GaAs).

[0293] The scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be limited by FIG. 19. The communication device may be an independent device or a part of a large device. For example, the communication device may be the following: (1) An independent integrated circuit IC, chip, or chip system or subsystem, (2) A set including one or more ICs, and optionally, the IC set may further include a storage component configured to store data and computer programs, (3) An ASIC, for example, a Modem, (4) A module that can be embedded in another device, (5) A receiver, terminal, intelligent terminal, mobile phone, wireless device, handheld device, mobile unit, in-vehicle device, network device, cloud device, artificial intelligence device, etc., (6) Another device, etc.

[0294] In a possible product form, the AP and STA in the embodiments of the present application may be implemented by a general-purpose processor.

[0295] A general-purpose processor for implementing the AP includes a processing circuit and an input / output interface internally connected to the processing circuit to communicate with the processing circuit.

[0296] In the design, the general-purpose processor may be configured to execute the functions of the AP in Embodiment 1. Specifically, the processing circuit is configured to generate a trigger frame transmitted in step S101 of FIG. 7a and / or execute another process of the technology described in this specification. The input / output interface is configured to execute steps S101 and S104 of FIG. 7a and / or execute another process of the technology described in this specification.

[0297] In the design, the general-purpose processor may be configured to execute the functions of the AP in Embodiment 1. Specifically, the processing circuit is configured to generate the trigger frame transmitted in step S201 of FIG. 8a and / or to execute another process of the technology described herein. The input / output interface is configured to execute steps S201 and S204 of FIG. 8a and / or to execute another process of the technology described herein.

[0298] In the design, the general-purpose processor may be configured to execute the functions of the AP in Embodiment 2. Specifically, the processing circuit is configured to generate the trigger frame transmitted in step S301 of FIG. 11 and / or to execute another process of the technology described herein. The input / output interface is configured to execute steps S301 and S304 of FIG. 11 and / or to execute another process of the technology described herein.

[0299] In the design, the general-purpose processor may be configured to execute the functions of the AP in Embodiment 3. Specifically, the processing circuit is configured to generate the trigger frame transmitted in step S401 of FIG. 14 and / or to execute another process of the technology described herein. The input / output interface is configured to execute steps S401 and S404 of FIG. 14 and / or to execute another process of the technology described herein.

[0300] In the design, the general-purpose processor may be configured to execute the functions of the second AP in Embodiment 4. Specifically, the processing circuit is configured to execute step S503 of FIG. 16 and / or to execute another process of the technology described herein. The input / output interface is configured to execute step S504 of FIG. 16 and / or to execute another process of the technology described herein.

[0301] A general-purpose processor for implementing an STA includes a processing circuit and an input / output interface internally connected to the processing circuit to communicate with the processing circuit.

[0302] In a design, the general-purpose processor may be configured to execute the functions of the STA of Embodiment 1. Specifically, the processing circuit is configured to generate an EHT TB PPDU transmitted in step S103 of FIG. 7a and / or to execute another process of the technology described herein. The input / output interface is configured to execute steps S102 and S103 of FIG. 7a and / or to execute another process of the technology described herein.

[0303] In a design, the general-purpose processor may be configured to execute the functions of the STA of Embodiment 1. Specifically, the processing circuit is configured to generate an EHT TB PPDU transmitted in step S203 of FIG. 8a and / or to execute another process of the technology described herein. The input / output interface is configured to execute steps S202 and S203 of FIG. 8a and / or to execute another process of the technology described herein.

[0304] In a design, the general-purpose processor may be configured to execute the functions of the STA of Embodiment 2. Specifically, the processing circuit is configured to generate an EHT TB PPDU transmitted in step S303 of FIG. 11 and / or to execute another process of the technology described herein. The input / output interface is configured to execute steps S302 and S303 of FIG. 11 and / or to execute another process of the technology described herein.

[0305] In a design, a general-purpose processor may be configured to execute the functions of the STA of Embodiment 3. Specifically, the processing circuit is configured to generate an EHT TB PPDU transmitted in step S403 of FIG. 14, and / or is configured to execute another process of the technology described herein. The input / output interface is configured to execute steps S402 and S403 of FIG. 14, and / or is configured to execute another process of the technology described herein.

[0306] In a design, a general-purpose processor may be configured to execute the functions of the second STA of Embodiment 4. Specifically, the processing circuit is configured to execute step S604 of FIG. 18, and / or another process of the technology described herein. The input / output interface is configured to execute step S605 of FIG. 18, and / or another process of the technology described herein.

[0307] It should be understood that the communication devices in the various product forms described above have any of the functions of the AP or STA in the method embodiments. Details are not repeated here.

[0308] One embodiment of the present application further provides a computer-readable storage medium. The computer-readable storage medium stores computer program code. When the processor executes the computer program code, the electronic device executes the method in any one of the foregoing embodiments.

[0309] One embodiment of the present application further provides a computer program product. When the computer program product operates on a computer, the computer is enabled to execute the method in any one of the foregoing embodiments.

[0310] One embodiment of the present application further provides a communication device. The device may exist in the product form of a chip. The structure of the device includes a processor and an interface circuit. The processor is configured to communicate with other devices via the interface circuit to enable the device to execute the method in any one of the foregoing embodiments.

[0311] One embodiment of the present application further provides a wireless communication system including an AP and an STA. The AP and the STA may execute the method in any one of the foregoing embodiments.

[0312] The steps of the methods or algorithms described in conjunction with the content disclosed in the present application may be implemented by hardware or by a processor by executing software instructions. The software instructions may include corresponding software modules. The software modules may be stored in a random access memory (RAM), flash memory, erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), register, hard disk, removable hard disk, compact disc read-only memory (CD-ROM), or any other form of storage medium well known in the art. For example, since the storage medium is coupled to the processor, the processor can read information from the storage medium or write information to the storage medium. Of course, the storage medium may be a component of the processor. The processor and the storage medium may be disposed in an ASIC. In addition, the ASIC may be located in a core network interface device. Of course, the processor and the storage medium may exist as separate components in the core network interface device.

[0313] Those skilled in the art should understand that in one or more of the foregoing examples, the functions described in this application can be implemented by hardware, software, firmware, or any combination thereof. When a function is implemented by software, the foregoing function can be stored in a computer-readable medium or transmitted as one or more instructions or codes in a computer-readable medium. The computer-readable storage medium includes a computer storage medium and a communication medium. The communication medium includes any medium that facilitates the transmission of a computer program from one place to another. The storage medium may be any available medium accessible from a general-purpose or dedicated computer.

[0314] In the foregoing specific embodiments, the objectives, technical solutions, and beneficial effects of this application are further described in detail. It should be understood that the foregoing description is merely a specific embodiment of this application and is not intended to limit the protection scope of this application. Modifications, equivalent substitutions, improvements, etc. made based on the technical solutions of this application shall be included within the protection scope of this application.

Description of Reference Numerals

[0315] 1 Communication device 11 Transceiver unit 12 Processing unit 2 Communication device 21 Transceiver unit 22 Processing unit 221 U-SIG reservation field setting subunit 222 SRP field setting subunit 3 Communication device 31 Decision unit 32 Transceiver unit 1000 Communication device 1001 Processor 1002 Transceiver 1004 Memory

Claims

1. 1. A method for indicating spatial reuse parameters in a trigger frame, comprising: transmitting, by an access point AP, a trigger frame, the trigger frame being used to trigger a station to transmit an ultra-high throughput trigger-based physical layer protocol data unit EHT TB PPDU; receiving, by the AP, the EHT TB PPDU transmitted by the station, in which a value indicated by a spatial reuse parameter SRP in a universal signal field U-SIG of the EHT TB PPDU is determined based on one or two of a value indicated by an uplink EHT spatial reuse parameter UL EHT SRP and values ​​indicated by one or more uplink spatial reuse parameters UL SRP fields in a common information field of the trigger frame; A method comprising:

2. A communication device for use in a wireless local area network (WLAN), comprising: A processor configured to generate a trigger frame; a transceiver configured to transmit the trigger frame, the trigger frame being used to trigger a station to transmit an ultra high throughput trigger based physical layer protocol data unit (EHT TB PPDU), the transceiver configured to receive the EHT TB PPDU transmitted by the station, and a value indicated by a spatial reuse parameter (SRP) in a universal signal field (U-SIG) of the EHT TB PPDU being determined based on one or two of a value indicated by an uplink EHT spatial reuse parameter (UL EHT SRP) and values ​​indicated by one or more uplink spatial reuse parameters (UL SRP) fields in a common information field of the trigger frame; A communication device comprising:

3. the common information field of the trigger frame includes four uplink spatial reuse parameter UL SRP fields, the four UL SRP fields being a UL SRP1 field, a UL SRP2 field, a UL SRP3 field, and a UL SRP4 field; The method of claim 1 or the communication device of claim 2, wherein the U-SIG of the EHT TB PPDU includes one SRP field, and a value of the SRP field is equal to a minimum value of values ​​indicated by the UL SRP1 field, the UL SRP2 field, the UL SRP3 field, and the UL SRP4 field.

4. the UL EHT SRP field is located within a reserved field of the common information field; The method of claim 1 or the communication device of claim 2, wherein the U-SIG of the EHT TB PPDU includes one SRP field, and a value of the SRP field is equal to the value indicated by the UL EHT SRP field.

5. the common information field of the trigger frame includes four uplink spatial reuse parameter UL SRP fields, the four UL SRP fields being a UL SRP1 field, a UL SRP2 field, a UL SRP3 field, and a UL SRP4 field, and the UL EHT SRP field is located within a reserved field of the common information field; The EHT TB PPDU is a non-aggregated PPDU, and the U-SIG of the EHT TB PPDU includes two SRP fields, an SRP1 field and an SRP2 field; the value of the SRP1 field is equal to the minimum of the values ​​indicated by the UL SRP1 field and the UL SRP2 field; The method of claim 1 or the communications device of claim 2, wherein the value of the SRP2 field is equal to the minimum of values ​​indicated by the UL SRP3 field and the UL SRP4 field.

6. the common information field of the trigger frame includes four uplink spatial reuse parameter UL SRP fields, the four UL SRP fields being a UL SRP1 field, a UL SRP2 field, a UL SRP3 field, and a UL SRP4 field, and the UL EHT SRP field is located within a reserved field of the common information field; 3. The method of claim 1 or the communication device of claim 2, wherein the bandwidth of the EHT TB PPDU is 320 MHz or the EHT TB PPDU is a part of an aggregated PPDU, and the U-SIG of the EHT TB PPDU includes two SRP fields, an SRP1 field and an SRP2 field, and a value of the SRP1 field is equal to a value of the SRP2 field, both of which are equal to a minimum value of values ​​indicated by the UL SRP1 field, the UL SRP2 field, the UL SRP3 field, and the UL SRP4 field.

7. the common information field of the trigger frame includes four uplink spatial reuse parameter UL SRP fields, the four UL SRP fields being a UL SRP1 field, a UL SRP2 field, a UL SRP3 field, and a UL SRP4 field, and the UL EHT SRP field is located within a reserved field of the common information field; 3. The method of claim 1 or the communication device of claim 2, wherein a bandwidth of the EHT TB PPDU is 320 MHz or the EHT TB PPDU is a part of an aggregated PPDU, and the U-SIG of the EHT TB PPDU includes two SRP fields, an SRP1 field and an SRP2 field, a value of the SRP1 field is equal to a minimum value of values ​​indicated by the UL SRP1 field, the UL SRP2 field, the UL SRP3 field, and the UL SRP4 field, and a value of the SRP2 field is equal to the value of the UL EHT SRP field.

8. The method according to any one of claims 1 to 3 to 6 or the communication device according to any one of claims 2 to 6, wherein the universal signal field U-SIG of the EHT TB PPDU further includes a U-SIG reserved field, and the value of the U-SIG reserved field is a default value.

9. 1. A method for determining a spatial reuse parameter field in a physical layer protocol data unit, comprising: receiving, by a station STA, a trigger frame, the trigger frame being used to trigger the station to transmit an ultra high throughput physical layer protocol data unit (EHT TB PPDU); transmitting, by the STA, the EHT TB PPDU, a value indicated by an SRP in a U-SIG of the EHT TB PPDU being determined based on one or two of a value indicated by an uplink EHT spatial reuse parameter UL EHT SRP and values ​​indicated by one or more UL SRP fields in a common information field of the trigger frame; A method comprising:

10. A communication device for use in a wireless local area network (WLAN), comprising: a transceiver configured to receive a trigger frame, the trigger frame being used to trigger the communication device to transmit an ultra high throughput physical layer protocol data unit (EHT TB PPDU); a processor configured to generate the EHT TB PPDU, wherein a value indicated by an SRP in a U-SIG of the EHT TB PPDU is determined based on one or two of a value indicated by an uplink EHT spatial reuse parameter UL EHT SRP and values ​​indicated by one or more UL SRP fields in a common information field of the trigger frame; The transceiver is configured to transmit the EHT TB PPDU.

11. the UL EHT SRP field is located within a reserved field of the common information field; The method of claim 9 or the communication device of claim 10, wherein the U-SIG of the EHT TB PPDU includes one SRP field, and a value of the SRP field is equal to the value indicated by the UL EHT SRP field.

12. the common information field of the trigger frame includes four uplink spatial reuse parameter UL SRP fields, the four UL SRP fields being a UL SRP1 field, a UL SRP2 field, a UL SRP3 field, and a UL SRP4 field, and the UL EHT SRP field is located within a reserved field of the common information field; The EHT TB PPDU is a non-aggregated PPDU, and the U-SIG of the EHT TB PPDU includes two SRP fields, an SRP1 field and an SRP2 field; the value of the SRP1 field is equal to the minimum of the values ​​indicated by the UL SRP1 field and the UL SRP2 field; The method of claim 9 or the communications device of claim 10, wherein the value of the SRP2 field is equal to the minimum of values ​​indicated by the UL SRP3 field and the UL SRP4 field.

13. the common information field of the trigger frame includes four uplink spatial reuse parameter UL SRP fields, the four UL SRP fields being a UL SRP1 field, a UL SRP2 field, a UL SRP3 field, and a UL SRP4 field, and the UL EHT SRP field is located within a reserved field of the common information field; 11. The method of claim 9 or the communication device of claim 10, wherein the bandwidth of the EHT TB PPDU is 320 MHz or the EHT TB PPDU is a part of an aggregated PPDU, and the U-SIG of the EHT TB PPDU includes two SRP fields, an SRP1 field and an SRP2 field, and a value of the SRP1 field is equal to a value of the SRP2 field, both of which are equal to a minimum value of values ​​indicated by the UL SRP1 field, the UL SRP2 field, the UL SRP3 field, and the UL SRP4 field.

14. the common information field of the trigger frame includes four uplink spatial reuse parameter UL SRP fields, the four UL SRP fields being a UL SRP1 field, a UL SRP2 field, a UL SRP3 field, and a UL SRP4 field, and the UL EHT SRP field is located within a reserved field of the common information field; 11. The method of claim 9 or the communication device of claim 10, wherein a bandwidth of the EHT TB PPDU is 320 MHz or the EHT TB PPDU is a part of an aggregated PPDU, and the U-SIG of the EHT TB PPDU includes two SRP fields, an SRP1 field and an SRP2 field, a value of the SRP1 field is equal to a minimum value of values ​​indicated by the UL SRP1 field, the UL SRP2 field, the UL SRP3 field, and the UL SRP4 field, and a value of the SRP2 field is equal to the value of the UL EHT SRP field.

15. The method according to claim 9 and any one of claims 11 to 14, or the communication device according to any one of claims 10 to 14, wherein the universal signal field U-SIG of the EHT TB PPDU further includes a U-SIG reserved field, and the value of the U-SIG reserved field is a default value.

16. 1. A trigger frame transmission method, comprising: transmitting, by an access point AP, a trigger frame, the trigger frame being used to trigger a station to transmit an ultra-high throughput trigger-based physical layer protocol data unit EHT TB PPDU, the trigger frame further including a U-SIG reservation indication field indicating a value of a U-SIG reserved field in the EHT TB PPDU; receiving, by the AP, the EHT TB PPDU transmitted by the station, wherein the value of the U-SIG reserved field in a universal signal field U-SIG of the EHT TB PPDU is determined based on the value of the U-SIG reservation indication field in the trigger frame; A method for transmitting a trigger frame, comprising:

17. A communication device for use in a wireless local area network (WLAN), comprising: a processor configured to generate a trigger frame, the trigger frame being used to trigger a station to transmit an ultra-high throughput trigger based physical layer protocol data unit (EHT TB PPDU), the trigger frame further including a U-SIG reservation indication field indicating a value of a U-SIG reserved field in the EHT TB PPDU; a transceiver configured to transmit the trigger frame, The transceiver is further configured to receive the EHT TB PPDU transmitted by the station, and the value of the U-SIG reserved field in a universal signal field U-SIG of the EHT TB PPDU is determined based on a value of the U-SIG reservation indication field in the trigger frame.

23. A communication device comprising:

18. The method of claim 16 or the communication device of claim 17, wherein the U-SIG reservation indication field is placed in a special user information field of a user information list field of the trigger frame.

19. 20. A method or communication device according to claim 18, wherein the associated identifier AID12 of the special user information field is a preset value or an incomplete AID12 value.

20. 20. The method or communications device of claim 18 or 19, wherein the special user information field further comprises one UL SRP field for the U-SIG, or two UL SRP fields for the U-SIG.

21. 21. The method according to claim 16 and any one of claims 18 to 20 or the communications device according to any one of claims 17 to 20, wherein the common information field of the trigger frame includes four uplink spatial reuse parameters UL SRP fields or further includes an uplink EHT spatial reuse parameter UL EHT SRP field in a reserved field of the common information field.

22. the two UL SRP fields for the U-SIG are an SRP1 field in the U-SIG and an SRP2 field in the U-SIG; the value of the SRP1 field in the U-SIG is equal to any value of a UL SR1 field and a UL SR2 field within four spatial reuse fields indicated by an uplink spatial reuse field of the trigger frame; 22. The method or communications apparatus of claim 21, wherein a value of an SRP2 field in the U-SIG is equal to any one of a UL SR3 field and a UL SR4 field in the four spatial reuse fields indicated by the uplink spatial reuse field of the trigger frame.

23. The method according to claim 16 or the communication device according to claim 17, wherein an HE / EHT subfield indicating an EHT STA is set in a reserved field in a common information field of the trigger frame to transmit a high-efficiency trigger-based physical layer protocol data unit HE TB PPDU or EHT TB PPDU.

24. The trigger frame: An uplink EHT PPDU Bandwidth Extension field used together with the UL(HE)BW field to jointly indicate the uplink HE bandwidth and the uplink EHT bandwidth, or 18. The method of claim 16 or the communications device of claim 17, further comprising a special user presence indicator subfield indicating whether the special user information field is present.

25. A physical layer protocol data unit (PPDU) transmission method, comprising: receiving, by a station STA, a trigger frame, the trigger frame being used to trigger a station to transmit an EHT TB PPDU, the trigger frame further including a U-SIG reservation indication field indicating a value of a U-SIG reserved field in the EHT TB PPDU; transmitting the EHT TB PPDU by the STA, wherein the value of the U-SIG reserved field in a universal signal field U-SIG of the EHT TB PPDU is determined based on the value of the U-SIG reservation indication field in the trigger frame; A physical layer protocol data unit (PPDU) transmission method, comprising:

26. A communication device for use in a wireless local area network (WLAN), comprising: a transceiver configured to receive a trigger frame, the trigger frame being used to trigger a station to transmit an EHT TB PPDU, the trigger frame further including a U-SIG reservation indication field indicating a value of a U-SIG reserved field in the EHT TB PPDU; a processor configured to generate the EHT TB PPDU, wherein the value of the U-SIG reserved field in a universal signal field U-SIG of the EHT TB PPDU is determined based on a value of the U-SIG reservation indication field in the trigger frame, and the transceiver is further configured to transmit the EHT TB PPDU, wherein the value of the U-SIG reserved field in a universal signal field U-SIG of the EHT TB PPDU is determined based on the value of the U-SIG reservation indication field in the trigger frame; and A communication device comprising:

27. The method of claim 25 or the communication device of claim 26, wherein the U-SIG reservation indication field is placed within a special user information field of a user information list field of the trigger frame.

28. 28. A method or communication device according to claim 27, wherein the associated identifier AID12 of the special user information field is a preset value or an incomplete AID12 value.

29. 29. The method or apparatus of claim 27 or 28, wherein the special user information field further comprises one UL SRP field for the U-SIG, or two UL SRP fields for the U-SIG.

30. 27. The method of claim 25 or the communications device of claim 26, wherein the common information field of the trigger frame includes four uplink spatial reuse parameter UL SRP fields or further includes an uplink EHT spatial reuse parameter UL EHT SRP field in a reserved field of the common information field.

31. A computer-readable storage medium having instructions stored thereon that, when executed on a computer, enable the computer to perform a method according to any one of claims 1, 3 to 8, 9, 11 to 15, 16, 18 to 24, 25, and 27 to 30.

32. A computer program product comprising instructions which, when executed on a computer, enable the computer to carry out a method according to any one of claims 1, 3 to 8, 9, 11 to 15, 16, 18 to 24, 25, 27 to 30.

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