Method and apparatus for specifying spatial reuse parameters and determining the spatial reuse parameter field.

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 extremely large bandwidth, such as 320 MHz, to achieve an extremely high transmission speed and support scenarios with an extremely high user density. Hereinafter, a station that supports the 802.11ax standard but does not support the 802.11be standard is abbreviated as an HE station, and a station that supports the 802.11be standard is abbreviated as an EHT station.

[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; other devices can only receive signals, not transmit them. This avoids interference with the current transmitting device. However, as the density of WLAN devices increases, it is becoming more common for basic service sets (BSSs) to overlap with other BSSs. In other words, overlapping basic service sets (OBSSs) are becoming more common. WLAN devices located within an OBSS may receive physical protocol data units (PPDUs, also called packets or data packets) from two BSSs, resulting in low transmission efficiency using conventional methods. Therefore, 802.11ax proposes a spatial reuse method. By adaptively adjusting the transmit power, WLAN devices within overlapping basic service sets can perform simultaneous transmissions. This significantly improves transmission efficiency. Specifically, 802.11ax introduces space reuse in the trigger frame-based uplink scheduling transmission method.When transmitting a high-efficiency 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 (also called uplink parameterized spatial reuse (UL PSR) fields) in the uplink spatial reuse field (UL spatial reuse) within the common information field of the received trigger frame to the four spatial reuse parameter (SRP) fields contained in the high-efficiency 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 of the 802.11ax standard, and there is an urgent issue that needs to be resolved as to how to design trigger frames to schedule EHT stations, or to schedule both HE and EHT stations. [Overview of the project] [Means for solving the problem]

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

[0006] The present application will be described below in several embodiments. Please understand that cross-referencing may be made between the following embodiments and the beneficial effects of different embodiments.

[0007] According to a first aspect, the present application provides a method for specifying spatial reuse parameters within a trigger frame, comprising the following steps:

[0008] The access point (AP) sends a trigger frame, which is used to trigger the station to send an ultra-high throughput trigger-based physical layer protocol data unit (EHT TB PPDU).

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

[0010] Optionally, the trigger frame is further used to trigger a station to transmit an HE TB PPDU. The values ​​of the four SRP fields contained in the HE-SIG-A of the HE TB PPDU are copied from the four UL SRP fields mentioned above, respectively. Each UL SRP field has a length of 4 bits, and each SRP field in the HE-SIG-A also has a length of 4 bits.

[0011] According to the method provided in the first aspect of this application, on the one hand, the contents of the trigger frame are not changed (specifically, the UL SRP value of the trigger frame is not changed), so 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, if 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, so 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 reservation field in the U-SIG of the EHT TB PPDU may be set to a default value.

[0012] According to a second aspect, the present application provides a method for determining a spatial reuse parameter field within a PPDU. The method includes the step of a station STA transmitting a trigger frame, the trigger frame being ultra-high throughput • Trigger-based Used to trigger a station to transmit a 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 the value indicated by the uplink EHT space reuse parameter UL EHT SRP, and one or more 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 contained in the HE-SIG-A of the HE TB PPDU are copied from the four UL SRP fields mentioned above, respectively. Each UL SRP field has a length of 4 bits, and each SRP field in the HE-SIG-A also has a length of 4 bits.

[0015] According to the method provided in a second aspect of this application, on the one hand, the contents of the trigger frame are not changed (specifically, the UL SRP value of the trigger frame is not changed), so 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, if 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, so 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 reservation 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 within an access point (AP). A processor configured to generate trigger frames, A transceiver configured to transmit trigger frames, the transceiver comprising a transceiver used to trigger a station to transmit an ultra-high throughput trigger-based physical layer protocol data unit (EHT TB PPDU).

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

[0018] A communication device provided in a third embodiment can implement the method provided in the first embodiment and achieve the corresponding technical effects. Further details are not provided here.

[0019] According to a fourth aspect, the present application provides a communication device used in a wireless local area network (WLAN), which is, A transceiver configured to receive trigger frames, wherein the trigger frames are ultra-high throughput • Trigger-based A transceiver used to trigger a communication device to transmit a physical layer protocol data unit (EHT TB PPDU), A processor configured to generate an EHT TB PPDU, wherein the value of the EHT TB PPDU indicated by the SRP in the U-SIG is determined based on the value indicated by the uplink EHT space reuse parameter UL EHT SRP and one or more values ​​indicated by one or more UL SRP fields in the common information field of the trigger frame.

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

[0021] A communication device provided in the fourth aspect can implement the method provided in the second aspect and achieve the corresponding technical effects. Further details are not described here.

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

[0023] According to the method provided in the first or second aspect, or the communication device provided in the third or fourth aspect, in the second embodiment, the UL EHT SRP field is located within a reserved field of the common information field. The U-SIG of the EHT TB PPDU includes one SRP field, the value of which 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. When the bandwidth of the EHT TB PPDU is 320 MHz, or the EHT TB PPDU is part of an 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 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 reserved 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 reserved field in the universal signaling field U-SIG of the EHT TB PPDU is determined based on the value of the U-SIG reserved instruction field in the trigger frame.

[0030] Optionally, the trigger frame is further used to trigger a station to transmit an HE TB PPDU. The values ​​of the four SRP fields contained in the HE-SIG-A of the HE TB PPDU are copied from the four UL SRP fields mentioned above, respectively. Each UL SRP field has a length of 4 bits, and each SRP field in the HE-SIG-A also has a length of 4 bits.

[0031] In this solution, the trigger frame instructs the value of the U-SIG reserved field in the EHT TB PPDU, and the trigger frame may be used to schedule an EHT station to send an uplink EHT TB PPDU and set the value of the U-SIG reserved field in the uplink EHT TB PPDU based on the instructions in the trigger frame, and both 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 space reuse parameter field in a physical layer protocol data unit PPDU. The method comprises a station STA receiving a trigger frame, the trigger frame being used to trigger the station to transmit an EHT TB PPDU, and the trigger frame further includes a U-SIG reservation instruction field that indicates the value of a U-SIG reservation field in the EHT TB PPDU.

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

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

[0035] According to the 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 an AP, for example, a Wi-Fi chip. The communication device is A processor configured to generate trigger frames, the trigger frames being used to trigger a station to transmit an ultra-high throughput trigger-based physical layer protocol data unit EHT TB PPDU, the trigger frames further including a U-SIG reservation instruction field that indicates the value of the U-SIG reservation field in the EHT TB PPDU, and the processor, It includes a transceiver configured to transmit trigger frames.

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

[0037] Optionally, the trigger frame is further used to trigger a station to transmit an HE TB PPDU. The values ​​of the four SRP fields contained in the HE-SIG-A of the HE TB PPDU are copied from the four UL SRP fields mentioned above, respectively. Each UL SRP field has a length of 4 bits, and each SRP field in the HE-SIG-A also has a length of 4 bits.

[0038] According to the eighth aspect, the present application provides a wireless local area network (WLAN) communication device. The communication device may be an STA or a chip within an STA, for example, a Wi-Fi chip. The communication device is a transceiver configured to receive a trigger frame, the trigger frame being used to trigger a station to transmit an EHT TB PPDU, and the trigger frame further includes a U-SIG reservation instruction field indicating a value for the U-SIG reservation field in the EHT TB PPDU, A processor configured to generate an EHT TB PPDU, wherein the value of the U-SIG reserved field in the universal signal field U-SIG of the EHT TB PPDU is determined based on the value of the U-SIG reserved instruction field in the trigger frame.

[0039] The transceiver is further configured to transmit an EHT TB PPDU, and the value of the U-SIG reserved field in the universal signal field U-SIG of the EHT TB PPDU is determined based on the value of the U-SIG reserved instruction field in the trigger frame.

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

[0041] According to the method provided in the fifth or sixth aspect, or the communication device provided in the seventh or eighth aspect, in the first embodiment, the U-SIG reservation instruction field is located in 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 relevant 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 space reuse parameter UL SRP fields. Alternatively, the common information field of the trigger frame further includes uplink EHT space reuse parameter UL EHT SRP fields in the reserved field of the common information field.

[0045] According to a ninth aspect, the present application provides a method for indicating spatial reuse parameters using a trigger frame. The method includes the step of an AP transmitting a trigger frame, which 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, which indicates the values ​​of the SRP1 field and / or SRP2 field in the U-SIG of the EHT TB PPDU. The values ​​of the SRP1 field and / or SRP2 field in the U-SIG of the EHT TB PPDU are determined based on the first indication information.

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

[0047] According to the eleventh aspect, the present application provides a communication device used in a WLAN. The communication device is an access point AP or a chip within an AP. A processor configured to generate a 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 instruction information, which indicates the values ​​of the SRP1 and / or SRP2 fields in the U-SIG of the EHT TB PPDU. The values ​​of the SRP1 and / or SRP2 fields in the U-SIG of the EHT TB PPDU are determined based on the first instruction information.

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

[0049] According to the twelfth aspect, the present application provides a communication device used 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 instruction information, the first instruction information indicating the values ​​of the SRP1 field and / or SRP2 field in the U-SIG of the EHT TB PPDU, and the transceiver, A processor configured to generate an EHT TB PPDU, wherein the values ​​of the SRP1 field and / or SRP2 field in the U-SIG of the EHT TB PPDU are determined based on first instruction information.

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

[0051] According to the method provided in the ninth or tenth aspect, or the communication device provided in the eleventh or twelfth aspect, in the first embodiment, the first instruction information is located in a common information field of the trigger frame. The common information field includes four UL SRP fields, each of which indicates the value of one of the four SRP fields in the HE TB PPDU.

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

[0053] According to the method provided in the ninth or tenth aspect, or the communication device provided in the eleventh or twelfth aspect, in the third embodiment, the first instruction information is placed in the UL SRP field of the user information field of the trigger frame.

[0054] According to the method provided in the ninth or tenth aspect, or the communication device provided in the eleventh or twelfth aspect, in the fourth embodiment, part of the first instruction information is located in four UL SRP fields of the common information field of the trigger frame, and another part is located in the UL SRP fields of the special user information field of the trigger frame. The four UL SRP fields, together with the UL SRP fields located in the special user information field, indicate the values ​​of the SRP1 field and / or SRP2 field in the U-SIG of the EHT TB PPDU.

[0055] According to the method provided in the ninth or tenth aspect, or the communication device provided in the eleventh or twelfth aspect, in the fifth embodiment, a portion of the first instruction information is placed in a common information field of the trigger frame, the common information field includes a UL EHT SRP field, and another portion is placed in a special user information field of the trigger frame, within the UL SRP field. The UL EHT SRP field, together with the UL SRP field placed in the special user information field, indicates the values ​​of the SRP1 field and / or SRP2 field in the U-SIG of the EHT TB PPDU.

[0056] According to the method provided in the ninth or tenth aspect, or the communication device provided in the eleventh or twelfth aspect, in the sixth embodiment, the first instruction information is placed in a special user information field of the trigger frame.

[0057] According to the method provided in the ninth or tenth aspect, or the communication device provided in the eleventh or twelfth aspect, in the seventh embodiment, the value of the AID12 field of a special user information field is a preset value or an incomplete AID12 value.

[0058] According to the method provided in the ninth or tenth aspect, or the communication device provided in the eleventh or twelfth aspect, in the eighth embodiment, the trigger frame is further used to trigger a station to transmit an HE TB PPDU. The values ​​of the four SRP fields contained in the HE-SIG-A of the HE TB PPDU are copied from the four UL SRP fields described above, respectively. Each UL SRP field has a length of 4 bits, and each SRP field in the HE-SIG-A also has a length of 4 bits.

[0059] In this solution, a special user information field within the trigger frame independently specifies the space reuse parameter for the EHT TB PPDU. The meaning of the special user information field is clear, and the HE station scheduling is unaffected. Thus, HE and EHT stations can be scheduled using the same trigger frame.

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

[0061] According to a thirteenth aspect, the present application provides a space reuse method. The method includes the step of a communication device determining the transmit power of an EHT TB PPDU based on one or more of the following: values ​​individually indicated by the SRP1 and SRP2 fields included in the U-SIG of the EHT TB PPDU, values ​​individually indicated by the four UL SRP fields included in the common information field of the trigger frame, or values ​​indicated by the UL EHT SRP in the common information field of the trigger frame. The communication device transmits the PPDU based on the transmit power of the PPDU.

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

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

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

[0065] According to the method in the thirteenth embodiment, or the communication device in the fourteenth embodiment, in the first embodiment, before the communication device determines the transmit power of the PPDU, the method further includes the step of the communication device receiving a trigger frame, the trigger frame containing four UL SRP fields. The value indicated by one UL SRP field is the sum of the transmit 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 located in the same overlapping basic service set OBSS. As used herein, “first AP” is the AP that transmits the trigger frame and is also the AP in the aforementioned method for determining the space reuse parameter fields in the PPDU. The communication device and the first AP are not the same device.

[0066] This solution provides a space reuse method for EHT TB PPDUs, resulting in compatibility when there are one or two SRP fields within a U-SIG, and space reuse is implemented according to the EHT standard. In this way, devices within the overlapping basic service set can perform transmissions simultaneously, increasing transmission efficiency.

[0067] According to a 15th aspect, the present application provides an apparatus which is implemented in the form of a functional unit and comprises a processing unit and a transceiver unit. The processing unit is configured to perform the functions of any one of the processors described in the preceding aspects, and the transceiver unit is configured to perform the functions of any one of the transceivers described in the preceding aspects.

[0068] According to the sixteenth aspect, the present application provides a device which is implemented in the form of a functional unit chip and comprises an input / output interface and a processing circuit.

[0069] In possible designs, the device is a chip in a communication device according to the third, seventh, eleventh, or fourteenth embodiment. The communication device is an AP. The processing circuitry within the chip is configured to perform processing functions that are executed on the AP side, according to the third, seventh, eleventh, or fourteenth embodiment. In another embodiment, the chip may further include radio frequency circuitry.

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

[0071] According to the 17th aspect, the present application provides a computer-readable storage medium. The computer-readable storage medium stores instructions. When the instructions are executed on a computer, the computer is enabled to perform the method according to the first, second, fifth, sixth, ninth, tenth, or thirteenth aspect.

[0072] According to the 18th aspect, the present application provides a computer program product including instructions. When the computer program product is run on a computer, the computer is enabled to perform the methods according to the first, second, fifth, sixth, ninth, tenth, or thirteenth aspect.

[0073] In the embodiments 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, totaling 8 microseconds (μs)). The spatial reuse parameter field of the EHT TB PPDU is set based on one or more of the following: the indication of the four UL SRP fields in the trigger frame, the indication of the UL EHT SRP field in the trigger frame, or the indication of the special user information field in the trigger frame. Thus, HE stations and EHT stations can be scheduled using the same trigger frame, and spatial reuse can be implemented in the EHT standard. Therefore, WLAN devices in overlapping basic service sets can perform transmissions simultaneously to increase transmission efficiency.

[0074] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used to illustrate the embodiments are briefly described below. [Brief explanation of the drawing]

[0075] [Figure 1] This is a schematic architectural diagram of a wireless communication system according to one embodiment of this application. [Figure 2a] This is a schematic diagram of the structure of an access point according to one embodiment of this application. [Figure 2b] This is a schematic diagram of the structure of a bureau according to one embodiment of the present application. [Figure 3a] This is a schematic diagram of an OBSS formed by partially overlapping one BSS with another. [Figure 3b] This is a schematic diagram of an OBSS formed by one BSS containing another BSS. [Figure 4] This is a schematic diagram of the trigger frame-based uplink scheduling transmission method in the 802.11ax standard. [Figure 5a] This is a schematic diagram of the trigger frame format. [Figure 5b]This is a schematic diagram of the frame format for common information fields and user information fields within an 802.11ax trigger frame. [Figure 6a-1] This is a schematic diagram of the frame format for the common information field and user information field within the trigger frame of 802.11be. [Figure 6a-2] This is a continuation of the schematic diagram of the frame format for common information fields and user information fields within the trigger frame of 802.11be. [Figure 6b] This is a schematic diagram of the frame structure of the EHT TB PPDU. [Figure 7a] This is a first schematic flowchart of a method for specifying a spatial reuse parameter within a trigger frame and a corresponding method for determining a spatial reuse parameter field in a PPDU, according to embodiments of the present application. [Figure 7b] Figure 7a is a schematic diagram showing the relationship between the U-SIG SRP field and the UL SRP field in the method described. [Figure 8a] This is a second schematic flowchart of a method for specifying a spatial reuse parameter within a trigger frame and a corresponding method for determining a spatial reuse parameter field in a PPDU, according to embodiments of the present application. [Figure 8b] This is a schematic diagram showing the relationship between the U-SIG SRP1 field, the U-SIG SRP2 field, and the UL SRP field in the method shown in Figure 8a. [Figure 9] This invention provides a schematic time series diagram of a trigger frame used for scheduling both HE and EHT stations for uplink data transmission, according to one embodiment of the present application. [Figure 10A] This is another schematic diagram of the frame format for the common information field and user information field within the trigger frame of 802.11be. [Figure 10B] This is a continuation of another schematic diagram of the frame format for common information fields and user information fields within the trigger frame of 802.11be. [Figure 11]This is a third schematic flowchart of a method for specifying spatial reuse parameters within a trigger frame and a method for determining spatial reuse parameter fields within a PPDU according to embodiments of the present application. [Figure 12a] Figure 11 is a schematic diagram showing the relationship between the U-SIG SRP field and the UL EHT SRP field in the method described. [Figure 12b] Figure 11 is a schematic diagram showing the relationship between the U-SIG SRP1 field, the U-SIG SRP2 field, and the UL SRP field in the method described. [Figure 12c] Figure 11 is a schematic diagram showing the relationship between the U-SIG SRP1 field, the U-SIG SRP2 field, and the UL SRP field in the method described. [Figure 13A] This is another schematic diagram of the frame format for the common information field and user information field within the trigger frame of 802.11be. [Figure 13B] This is a continuation of another schematic diagram of the frame format for common information fields and user information fields within the trigger frame of 802.11be. [Figure 14] This is a schematic flowchart of a trigger frame transmission method and a PPDU transmission method according to one embodiment of this application. [Figure 15a] This is a schematic diagram showing the SRP in the U-SIG of a trigger frame according to one embodiment of the present application. [Figure 15b] This is another schematic diagram showing the SRP in the U-SIG of a trigger frame according to one embodiment of the present application. [Figure 16] This is a schematic flowchart of a space reuse method according to one embodiment of this application. [Figure 17] This is a schematic timeline diagram of a space reuse method according to one embodiment of this application. [Figure 18] This is another schematic flowchart of a space reuse method according to one embodiment of this application. [Figure 19] This is a schematic diagram of the structure of a communication device 1 according to one embodiment of this application. [Figure 20]This is a schematic diagram of the structure of a communication device 2 according to one embodiment of this application. [Figure 21] This is a schematic diagram of the structure of a communication device 3 according to one embodiment of this application. [Figure 22] This is a schematic diagram of the structure of a communication device 1000 according to one embodiment of this application. [Modes for carrying out the invention]

[0076] The technical solutions in the embodiments of this application will be described clearly and completely below with reference to the accompanying drawings.

[0077] To facilitate understanding of the methods provided in the embodiments of this application, the system architecture and / or application scenarios of the methods provided in the embodiments of this application are described below. It will be understood that the system architecture and / or application scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions in the embodiments of this application and do not constitute a limitation on the technical solutions provided in the embodiments of this application.

[0078] This embodiment of the present application provides a method for scheduling an EHT station, or both an HE station and an EHT station, by specifying a spatial reuse parameter within a trigger frame.

[0079] In the trigger frame embodiment of this embodiment, the common information field of the trigger frame is not modified, and special user information fields in the user information list field portion individually indicate the space reuse parameters within the EHT TB PPDU. In another embodiment, some fields in the common information field of the trigger frame indicate the space reuse parameters within the EHT TB PPDU. Therefore, it is not necessary to add special user information fields to the user information list field portion. In yet another embodiment, special user information fields are added to the user information list field portion of the trigger frame to indicate the space reuse parameters and U-SIG reservation information within the EHT TB PPDU.

[0080] In the two embodiments 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 one or more of the following: four UL SRP fields in the trigger frame, one UL EHT SRP field in the trigger frame, or four UL SRP fields and one or more UL EHT SRP fields. Thus, HE stations and EHT stations can be scheduled using the same trigger frame, and spatial reuse can be implemented in the EHT standard. Therefore, WLAN devices in overlapping basic service sets can perform transmissions simultaneously to increase transmission efficiency.

[0081] The method for specifying spatial reuse parameters in a trigger frame and the method for determining the spatial reuse parameter field in a PPDU, provided in this embodiment, may be applied to wireless communication systems such as wireless local area network systems. The method for determining the spatial reuse parameter field in a PPDU may be implemented by a communication device in the wireless communication system, or by a chip or processor within 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, a communication device may be called a multi-link device (MLD) or multiband device. Compared to a communication device that supports only single-link transmission, a multi-link device has higher transmission efficiency and higher throughput.

[0082] The methods provided in embodiments of this application for specifying spatial reuse parameters in a trigger frame and for determining spatial reuse parameter fields in a PPDU may be applied to scenarios in which an AP communicates with one or more STAs, further to communication scenarios in which an AP communicates with another AP, and further to scenarios in which an STA communicates with another STA. Figure 1 is a schematic diagram of the architecture of a wireless communication system according to one embodiment of this application. As shown in Figure 1, the wireless communication system may include one or more APs (e.g., AP1 and AP2 in Figure 2) and one or more STAs (e.g., STA1, STA2, and STA3 in Figure 2). AP1 and AP2 may be located in the same OBSS. Both APs and STAs support the WLAN communication protocol. The communication protocol may include 802.11be (or Wi-Fi 7, also known as the EHT protocol), and further may include protocols such as 802.11ax and 802.11ac. Of course, the communication protocol may further include next-generation protocols such as 802.11be, with the continued evolution and development of communication technology. WLAN is used as an example. An apparatus for carrying out the method in this application may be an AP or STA in a WLAN, or a chip or processing system located in the AP or STA.

[0083] An access point (for example, AP1 or AP2 in Figure 1) is a device having wireless communication capabilities, supporting communication using the WLAN protocol, and having the ability to communicate with other devices in the WLAN network (for example, a station or another access point), and of course, it may further have the ability to communicate with other devices. In a WLAN system, an access point is sometimes called an access point station (AP STA). The device having wireless communication capabilities may be an entire device, or a chip or processing system mounted on the entire device. A device on which a chip or processing system is installed may implement the methods and functions of the embodiments of this application under the control of the chip or processing system. The AP in the embodiments of this application is a device that provides services 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, the AP may alternatively be a chip or processing system in various forms of these devices to implement the methods and functions of the embodiments of this application.

[0084] A station (for example, STA1, STA2, or STA3 in Figure 1) is a device having wireless communication capabilities, supporting communication using the WLAN protocol, and having the ability to communicate with other stations or access points in a WLAN network. In a WLAN system, a station is sometimes referred to as a non-access point station (non-AP STA). For example, an STA is any user communication device that enables a user to communicate with an AP and further with the WLAN. A device having wireless communication capabilities may be an entire device or a chip or processing system mounted on the entire device. A device on which a chip or processing system is located may implement the methods and functions of this embodiment of the present application under the control of the chip or processing system. For example, an STA may be a user device that can connect to the Internet, such as a tablet computer, desktop computer, laptop computer, notebook computer, ultra-mobile personal computer (UMPC), handheld computer, netbook, personal digital assistant (PDA), or mobile phone. Alternatively, 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 game device or system, a global positioning system device, etc. Alternatively, STA may be a chip and processing system within the aforementioned terminal.

[0085] WLAN systems can provide high-speed and low-latency transmission. With the continued development of WLAN application scenarios, WLAN systems will be applied to a wider range of scenarios and industries, such as the Internet of Things industry, the Internet of Vehicles industry, the banking industry, corporate offices, stadiums, exhibition halls, concert halls, hotel rooms, dormitories, wards, classrooms, supermarkets, squares, streets, production workshops, and warehouse storage. Of course, devices that support WLAN communication (such as access points or stations) may include sensor nodes in smart cities (e.g., smart water meters, smart electricity meters, or smart air detection nodes), smart devices in smart homes (e.g., smart cameras, projectors, displays, televisions, stereos, refrigerators, or washing machines), nodes in the Internet of Things, entertainment terminals (e.g., AR, VR, or other wearable devices), smart devices in smart offices (e.g., printers, projectors, speakers, or stereos), Internet of Vehicle devices in the Internet of Vehicles, infrastructure in everyday life scenarios (e.g., vending machines, self-service navigation stations in supermarkets, self-service checkout devices, or self-service ordering machines), and devices in large-scale sports and music venues. Specific forms of multilink STAs and multilink APs are not limited to the embodiments of this application and are merely examples for illustrative purposes.

[0086] The 802.11 standard focuses on the physical layer (PHY) and media access control (MAC) layers. For an example, see Figure 2a. Figure 2a is a schematic diagram showing the structure of an access point according to one embodiment of this application. The AP may be multi-antenna / multi-radio frequency or single-antenna / single-radio frequency. The antenna / radio frequency is used to transmit / receive data packets. In one embodiment, the antenna or radio frequency portion of the AP may be separated, in other words, separated from the body of the AP. In Figure 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. In another example, see Figure 2 See b. Figure 2b is a schematic diagram showing the structure of a station according to one embodiment of the present application. Figure 2b is a schematic diagram showing the structure of a single-antenna / single-radio-frequency STA. In a real-world scenario, an STA may be multi-antenna / multi-radio-frequency and may be a device with three or more antennas. The antennas / radio frequencies are used to transmit / receive data packets. In one embodiment, the antenna or radio-frequency portion of the STA may be separated, in other words, separated from the body of the STA. In Figure 2b, the STA may include a PHY processing circuit and a MAC processing circuit. The physical layer processing circuit may be configured to process physical layer signals, and the MAC layer processing circuit may be configured to process MAC layer signals.

[0087] The above description briefly explains the system architecture in the embodiments of this application. To better understand the technical solutions in the embodiments of this application, the following describes the contents related to the embodiments of this application.

[0088] 1. Overlapping Basic Service Sets (BSS, OBSS) An overlapping basic service set (OBSS) is a basic service set (BSS) operating on the same channel as the station's (STA's) BSS and within its basic service area (BSA). The basic service area (BSA) is 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 the basic service area of ​​another BSS is the OBSS. In this specification, overlap means that the basic service area of ​​one BSS and the basic service area of ​​another BSS partially overlap or may be in a relationship of inclusion, and specifically, it may mean that the basic service area of ​​one BSS falls within the scope of the basic service area of ​​another BSS. Figure 3a is a schematic diagram of an OBSS formed by the partial overlap of one BSS and another BSS. In Figure 3a, AP1, STA1, and STA3 belong to BSS 1, and AP2 and STA2 belong to BSS 2. There is an overlapping area between BSS1 and BSS2, and AP1 and AP2 are located within the overlapping area between BSS1 and BSS2, in other words, they are located within the OBSS formed by BSS1 and BSS2. Figure 3b is a schematic diagram of an OBSS formed by one BSS including another BSS. In Figure 3b, AP1, STA1, and STA3 belong to BSS1, and AP2 and STA2 belong to BSS2. BSS1 includes BSS2, and AP1 and AP2 are located within the overlapping area between BSS1 and BSS2 (i.e., the basic service area of ​​BSS2 in Figure 3b), or in other words, 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, Figure 3a is used as an example. When AP1 and STA1, located within the same BSS, perform data transmission, AP2, located within a different BSS, can receive the information transmitted by AP1 and STA1, or AP2 can further receive information transmitted by STA3. Based on the space reuse parameters forwarded by AP1, AP2 can adaptively adjust the power to which it transmits PPDUs to STA2 in order to perform simultaneous transmission within the OBSS. Similarly, when AP2 and STA2, located within the same BSS, perform data transmission, AP1, located within a different BSS, can receive the information transmitted by AP2. Alternatively, based on the space reuse parameters forwarded by AP2, AP1 can adaptively adjust the power to which it transmits PPDUs to STA1 and / or STA 3 in order to perform simultaneous transmission within the OBSS.

[0091] 2.802.11ax standard: Trigger frame-based uplink scheduling transmission method Figure 4 is a schematic diagram of the 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 includes the following steps in particular: (1) The AP transmits a trigger frame, which is used to schedule one or more STAs to transmit an uplink trigger-based HE PPDU. The trigger-based HE PPDU may be abbreviated as HE TB PPDU. 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 Uplink Spatial Reuse field. The user information list field includes one or more user information fields, each containing information that one STA needs to read. Figure 5b is a schematic diagram of the frame format for the common information field and user information field in the trigger frame of 802.11ax. As shown in Figure 5b, in the user information field, association identification 12 (AID12) indicates the association identifier of the STA, and the resource unit (RU) allocation subfield indicates the specific resource unit location assigned to the STA (the STA indicated by AID12).

[0092] (2) After receiving the trigger frame, one or more STAs parse the trigger frame to obtain the user information field that matches the STA's AID, and then send 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 sends back an acknowledgment frame to one or more STAs to acknowledge that the AP has received the HE TB PPDU.

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

[0095] [Table 1]

[0096] 3.802.11be standard: Trigger frame-based uplink scheduling transmission method and corresponding EHT TB PPDU The trigger frame-based uplink scheduling transmission method of 802.11ax is still used in 802.11be, and the frame format and method procedure for trigger frames in 802.11be are similar to those of 802.11ax.

[0097] Figures 6a-1 and 6a-2 are schematic diagrams of the frame format of the common information field and user information field in 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 this embodiment of the application, the UL SRP field in the uplink space reuse field of the common information field is relevant. Other fields in the trigger frame may differ from those in Figures 6a-1 and 6a-2, in other words, they may be represented in a different format. This is not limited to this embodiment of the application. For example, the uplink HE-SIG A2 reserved (UL HE-SIG A2 reserved) field included in the common information field portion may be called 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 signaling field, a repeating legacy signaling field, a universal signaling field, an ultra-high throughput short training sequence, an ultra-high throughput long training sequence, a data field, and a data packet extension field. For the meaning of the fields included in the EHT TB PPDU, please refer to Table 2 below.

[0098] [Table 2]

[0099] As an example, the contents of the U-SIG field within the EHT TB PPDU are shown in Table 3.

[0100] [Table 3]

[0101] From the structure and contents of the EHT TB PPDU U-SIG in Figure 6b and Table 3, it can be seen that, due to length limitations, the EHT TB PPDU U-SIG contains a maximum of two SRP fields, for example, Spatial Reuse 1 field and Spatial Reuse 2 field, and each SRP field is 4 bits long. The trigger frame's common information field holds four UL SRP fields, and the HE-SIG-A field of the HE TB PPDU also contains four SRP fields that correspond one-to-one with the four UL SRP fields in the trigger frame. Therefore, in a scenario where the 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 in the same way as the SRP fields in the HE TB PPDU. Therefore, it is an urgent issue to address how to set the trigger frame to instruct the SRP field in the EHT TB PPDU to be set, and how to set the SRP field in the EHT TB PPDU when the STA transmits the EHT TB PPDU so that the HE and EHT stations can be scheduled using the same trigger frame and the spatial reuse parameters can be fed back.

[0102] Embodiments of this application provide a method for specifying space reuse parameters within a trigger frame and a method for determining the space reuse parameter field within a PPDU. Since the trigger frame is designed and the space reuse parameters within the EHT TB PPDU are set without altering the frame structure for different bandwidths, HE and EHT stations can be scheduled using the same trigger frame, and space reuse can be implemented according to the EHT standard. In this way, WLAN devices in overlapping basic service sets can transmit simultaneously to improve transmission efficiency.

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

[0104] The technical solutions provided in this application are described using Embodiments 1 to 5. Embodiment 1 describes a method for setting space reuse parameters in an EHT TB PPDU at different bandwidths (20 / 40 / 80 / 160 / 320 MHz) without modifying 802.11ax. Embodiment 2 describes a method for specifying space reuse parameters in an EHT TB PPDU using the reserved field in the common information field of the trigger frame to implement the function of the uplink EHT space reuse field (HE-SIG-A2 reserved field and reserved field, collectively referred to as reserved field). Embodiment 3 describes a method for specifying space reuse parameters in an EHT TB PPDU using the reserved field in the common information field and the user information list field in the trigger frame. Embodiment 4 describes a space reuse method based on space reuse parameters in 802.11be. It will be understood that any combination of the technical solutions described in Embodiments 1 to 4 of this application may form new embodiments.

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

[0106] It will be understood that the following describes the method provided in this application using a communication system including one or more APs and one or more STAs as an example. The APs support the 802.11be protocol (or Wi-Fi 7, also known as the EHT protocol) and may further support other WLAN communication protocols, such as 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 primarily describes the setting of spatial reuse parameters within the EHT TB PPDU in bandwidths of 20 / 40 / 80 / 160 / 320 MHz when the trigger frame is not changed (or the contents of the trigger frame are 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 specifying a spatial reuse parameter within 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 7a, the method includes, but is not limited to, the following steps.

[0110] S101: The AP sends a trigger frame, which is used to trigger the station to send an ultra-high throughput trigger-based physical layer protocol data unit (EHT TB PPDU).

[0111] S102: STA receives the trigger frame.

[0112] S103: The STA transmits an EHT TB PPDU, and within the universal signaling field U-SIG of the EHT TB PPDU there is only one spatial reuse parameter SRP field, which 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 space reuse fields indicated by the four uplink space reuse parameters UL SRP fields, and can be expressed 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 the value of any of the four space reuse fields indicated by the four uplink space reuse parameters UL SRP fields, and SRP1 may be represented as 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 specifying a spatial reuse parameter within 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, but is not limited to, the following steps.

[0117] S201: The AP sends a trigger frame, which is used to trigger the station to send an ultra-high throughput trigger-based physical layer protocol data unit (EHT TB PPDU). See Figures 6a-1 and 6a-2 for the structure and configuration of the trigger frame.

[0118] S202:STA receives the trigger frame.

[0119] S203:STA transmits an EHT TB PPDU, and the universal signal field U-SIG of the EHT TB PPDU contains two spatial reuse parameters, the SRP1 field and the SRP2 field, which indicate the spatial reuse parameter corresponding to the low-frequency half and the spatial reuse parameter corresponding to the high-frequency half across the entire bandwidth, respectively. The values ​​indicated by the spatial reuse parameters SRP1 and SRP2 fields are 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, respectively.

[0120] In one embodiment, the SRP1 and SRP2 fields indicate the SRP values ​​for different subchannels, respectively, where the SRP value is equal to the sum of the AP's transmit power and the maximum interference power that the AP may receive in the corresponding subchannel. It should be understood that the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU may have other names, such as the PSR1 and PSR2 fields. This is not limited to this embodiment of the present application.

[0121] In one embodiment, as shown in Figure 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 may be equal to the minimum value of the UL SR1 and UL SR2 fields 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}.

[0122] The value of the SRP2 field in U-SIG may be equal to the minimum value of the UL SR3 and UL SR4 fields among 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}.

[0123] In one embodiment, as shown in Figure 8b, if 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 and SRP2 fields are equal to the minimum value of the four space reuse fields indicated by the uplink space reuse field in the trigger frame, such that 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 for specifying spatial reuse parameters within a trigger frame, as shown in Figures 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. While this embodiment of the application focuses on the case where the trigger frame is used to trigger an EHT station to transmit an EHT TB PPDU, it 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 the case where the trigger frame is used to trigger an EHT station to transmit an EHT TB PPDU and simultaneously to trigger an HE / EHT station to transmit an HE TB PPDU. It should be understood that while an HE station can only transmit HE TB PPDU, an EHT station may be compatible with the 802.11ax protocol. Therefore, an EHT station may transmit both HE TB PPDU and EHT TB PPDU.

[0126] Figure 9 is a schematic time series diagram of an embodiment of the present application in which a trigger frame is used to schedule both the HE station and the EHT station for uplink data transmission. As shown in Figure 9, the AP transmits a trigger frame, which is used to simultaneously schedule the HE station (e.g., STA 1 in Figure 9) and the EHT station (e.g., STA 2 in Figure 9) 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 Figure 9 may be used solely to schedule an EHT station; in other words, it should be understood that both STA 1 and STA 2 in Figure 9 are EHT stations. The trigger frame shown in Figure 9 may also be used solely to schedule a station to transmit an EHT TB PPDU; in other words, it should be further understood that both STA1 and STA2 in Figure 9 transmit an EHT TB PPDU.

[0127] Specifically, a trigger frame may be transmitted by broadcast. When an AP transmits a trigger frame, one or more stations may receive it. If the trigger frame is used to simultaneously schedule an EHT station to transmit an EHT TB PPDU and an HE station to transmit an HE TB PPDU, the EHT station may set the values ​​indicated by the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU based on the values ​​indicated by one or more UL SRP fields in the common information field of the received trigger frame, and then transmit the EHT TB PPDU. In other words, the EHT station may set the values ​​indicated by the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU based on the values ​​indicated by one or more UL SRP fields in the common information field of the received trigger frame. The HE station may copy the values ​​of the four UL SRP fields in the received trigger frame one by one into the four SRP fields in the HE TB PPDU and then transmit the HT TB PPDU.

[0128] Optionally, the correspondence between the values ​​and meanings of the UL SRP field or SRP field in this application may be shown in Table 4 below. The Uplink Space Reuse Parameter (UL SRP) field may also be called the Uplink Parameter Space Reuse (UL PSR) field. In this application, UL SRP and UL PSR may be used interchangeably, i.e., SRP and PSR may be used interchangeably. The value of the Uplink Space Reuse Parameter is determined by the AP and will be understood to be equal to the sum of the AP's transmit power and the maximum interference power that the AP may receive.

[0129] [Table 4]

[0130] In this application, it will 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 primarily describes a method for configuring a trigger frame to adapt to the SRP field of a U-SIG (in other words, modifying the contents of a trigger frame), and a method for configuring spatial reuse parameters within a trigger-based PPDU (HE TB PPDU and EHT TB PPDU) after modifying the contents of the trigger frame.

[0132] In practical applications, Embodiment 2 of this application may be implemented by reference to some embodiments of Embodiment 1, or independently. This is not limited to this embodiment of the application.

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

[0134] Specifically, as shown in Figures 10A and 10B, the reserved fields in the common information field of the trigger frame (including the HE-SIG-A2 reserved field and reserved field) 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 HE TB PPDU, and the uplink EHT space reuse field. Optionally, a special user presence indication subfield may also be included. The uplink EHT space reuse field either individually instructs the space reuse parameters within the EHT TB PPDU, or is used in conjunction with the uplink space reuse field to instruct the space reuse parameters within the EHT TB PPDU. In other words, the value of the SRP field in the U-SIG of the EHT TB PPDU depends on at least one of the uplink EHT space reuse field and the uplink space reuse field.

[0135] The HE-SIG-A2 reserved field and the contents of the reserved field in the trigger frame, as shown in Figures 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 reserved field may include some or all of the subfields. It should also be understood that the subfields in Table 5 may have other names, and this is not limited to the examples of this application. The number of bits occupied by each subfield is just one example; this is not limited to this embodiment of this application.

[0138] Table 6 shows the meaning of the Uplink EHT PPDU Bandwidth field in Table 5 when the Uplink EHT PPDU Bandwidth field specifies the Uplink EHT PPDU Bandwidth individually.

[0139] [Table 6]

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

[0141] Note that two reserved instructions have been introduced in the current standard. One is the Validate reserved bit / entry, in which case the frame is ignored if the receiving end does not understand the field's instruction. The other is the Disregard reserved bit / entry, in which case the field is ignored if the receiving end does not understand the field's instruction, and the interpretation of another field continues. For uplink EHT PPDU bandwidth fields, the reserved entry must be a validation reserved entry. In other words, if a non-EHT receiving end does not understand the field's instruction, the frame is ignored.

[0142] The following describes how to specify spatial reuse parameters within a trigger frame and the corresponding methods for determining the spatial reuse parameter field in a PPDU, with reference to the trigger frames shown in Figures 10A and 10B.

[0143] Figure 11 is a third schematic flowchart of a method for specifying a spatial reuse parameter in a trigger frame and a corresponding method for determining the spatial reuse parameter field in a PPDU, according to embodiments of the present application. As shown in Figure 11, the method for specifying a spatial reuse parameter in a trigger frame and a corresponding method for determining the spatial reuse parameter field in a PPDU includes, but is 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 trigger frame's common information field 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 space reuse parameters. In one embodiment, as shown in Figures 10A and 10B, the UL HE-SIG-A2 reserved field and / or the UL HE-SIG-A2 reserved field includes an uplink EHT PPDU bandwidth subfield, an HE / EHT subfield, an uplink EHT space reuse field, and a special user presence indicator field.

[0145] S302: STA receives the trigger frame.

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

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

[0148] In another embodiment, as shown in Figure 12b, the U-SIG includes two SRP fields, represented by U-SIG SRP1 and U-SIG SRP2, which indicate the spatial reuse parameters for the low-frequency half and high-frequency half across the entire bandwidth, respectively. 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 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 Figure 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 / 160MHz and the TB PPDU is an unaggregated PPDU, the uplink space reuse field indicates only two SRP fields. The value of the U-SIG SRP1 field may be equal to the minimum or any one of the values ​​of the UL SRP1 and UL SR2 fields among the four space reuse fields indicated by the space reuse field. The value of the U-SIG SRP2 field may be equal to the minimum or any value of the UL SR3 and UL SR4 fields among the four space reuse fields indicated by the space reuse field. In this case, the uplink EHT space 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 space reuse field indicates the SRP1 field within the two SRPs. The value of the U-SIG SRP1 field may be equal to the minimum value of the four space reuse fields indicated by the space reuse field, and the value of the U-SIG SRP2 field is equal to the value indicated by the uplink EHT space reuse field.

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

[0153] In one embodiment, the trigger frame 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. While this embodiment of the application focuses on the case in which the trigger frame is used to trigger an EHT station to transmit an EHT TB PPDU, it is not limited to the case in which the trigger frame is used only to trigger an EHT station to transmit an EHT TB PPDU, and may further include the case in which the trigger frame is used to trigger an EHT station to transmit an EHT TB PPDU and simultaneously to trigger an HE / 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 it may include two spatial reuse parameter (SRP) fields, the SRP1 field and the SRP2 field. The SRP1 and SRP2 fields indicate the SRP values ​​for different subchannels, respectively, where the SRP value is equal to the sum of the AP's transmit power and the maximum interference power that the AP may receive in the corresponding subchannel. It should be understood that the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU may have other names, such as the PSR1 and PSR2 fields. This is not limited to this embodiment of the present application.

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

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

[0157] [Table 7]

[0158] In the aggregated PPDU scenario, please understand that the bandwidths of the HE TB PPDU and EHT TB PPDU are 160 MHz each, 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 (80 MHz punctured).

[0159] In the aggregated PPDU scenario, it should be further understood that the setting of the spatial reuse parameters within HE-SIG-A for HE TB PPDUs is consistent with conventional techniques. Details will not be repeated here.

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

[0161] Embodiment 3 Embodiment 3 of this application primarily describes a technical solution in which a trigger frame holds a special user information field and individually specifies space reuse parameters and U-SIG reservation fields for an EHT TB PPDU, and a method for setting the space reuse parameters and U-SIG reservation fields for an EHT TB PPDU when the trigger frame does not hold a special user information field.

[0162] In practical applications, Embodiment 3 of this application may be implemented with reference to Embodiment 1 or Embodiment 2 described above, with respect to the method of setting the SRP1 and SRP2 fields in the U-SIG with bandwidths of 20 MHz, 40 MHz, 80 MHz, and 160 MHz. Embodiment 3 of this application may be implemented independently. This is not limited to this embodiment of the application.

[0163] Refer to Figures 13A and 13B. In the trigger frames shown in Figures 13A and 13B, the common information field of the trigger frame may include four UL SRP fields: UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field. The four UL SRP fields may each indicate the values ​​of the four SRP fields in the HE TB PPDU.

[0164] The trigger frame's user information list field contains multiple user information fields, one of which is a special user information field represented as user info(STA 1).

[0165] In one embodiment, the special user information field may include a UL SRP field and a U-SIG reservation instruction field. The UL SRP field indicates the values ​​of the SRP1 and SRP2 fields 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 instruction 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 instruction field. The values ​​of the SRP1 and / or SRP2 fields in the U-SIG of the EHT TB PPDU are indicated by the UL SRP1, UL SRP2, UL SRP3, and UL SRP4 fields in the common information field of the trigger frame, or by the UL EHT SRP field of HE-SIG-A2 in the common information field. The U-SIG reservation instruction 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 in a 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 may be 2044. Alternatively, the preset value may be an AID that is not assigned to any associated STA (for example, 2007), and is in the range of 1 to 2007.

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

[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, resulting in 9 bits being wasted. In the 802.11be standard, as shown in Figure 9, in addition to SRP1 and SRP4, the U-SIG portion of the EHT TB PPDU includes an additional U-SIG reserved field, meaning 12 bits are reserved. The values ​​of these 12 reserved bits must be indicated by the trigger frame. This is why the trigger frame requires an uplink U-SIG reserved indicator field, which is 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, the trigger frame does not need to indicate the values. Instead, if necessary, the uplink U-SIG reserved indicator field in the special user information field within the trigger frame indicates the specific value. In this way, the bit overhead of the trigger frame is reduced. In releases later than 802.11be, if instructions within the trigger frame are not required, then in 802.11be, the trigger frame does not need to contain special user information fields.

[0170] It should be understood that the special user information field does not need to exist in Release 1 (R1) released with 802.11be. However, devices supporting R1 must 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 information field must be used. This prevents situations where an AP or third-party station cannot correctly receive a U-SIG due to mutual interference caused by the differing contents of U-SIGs when a device supporting R1 and a device supporting R2 are jointly transmitting U-SIGs.

[0171] In conclusion, whether or not special user information fields exist, and what their significance is, is shown in Table 8.

[0172] [Table 8]

[0173] Note that if a U-SIG has only one SRP field, the reserved field will be 16 bits. If a U-SIG has two SRP fields, the reserved field will be 12 bits.

[0174] Some of the values ​​in the U-SIG reserved field of the EHT TB PPDU are indicated by a special user field in the trigger frame, and some of the values ​​are indicated by the uplink HE-SIG-A2 reserved field and / or reserved field. If the meaning of some reserved fields needs to be changed in a subsequent standard, the reserved values ​​corresponding to the HE-SIG-A2 reserved field and / or reserved field may be changed preferentially. In this way, bit overhead in the trigger frame is 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 instruction field and the physical layer version field may be included in the special user information fields shown in Table 8. It should also be understood that the subfields in Table 8 may have other names, and this is not limited to the examples of this application. The number of bits occupied by and corresponding to each subfield is merely an example. In this embodiment of this application, a further number of bits may be set for the subfields.

[0176] Figure 14 is a schematic flowchart of a trigger frame transmission method and a corresponding PPDU transmission method according to one embodiment of the present application. As shown in Figure 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 instruction information, which indicates the value of the U-SIG reserved field in the U-SIG of the EHT TB PPDU.

[0178] The trigger frame further holds the first instruction information, which indicates the values ​​of the SRP1 field and / or SRP2 field in the U-SIG of the EHT TB PPDU.

[0179] S402: STA receives the trigger frame.

[0180] S403:STA transmits an EHT TB PPDU, and the value of the U-SIG reserved field in the U-SIG of the EHT TB PPDU is either the default value or determined based on the second instruction information. The values ​​of the SRP1 field and / or SRP2 field in the U-SIG of the EHT TB PPDU are determined based on the first instruction information.

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

[0182] Optionally, the trigger frame 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. While this embodiment of the application focuses on the case in which the trigger frame is used to trigger an EHT station to transmit an EHT TB PPDU, it is not limited to the case in which the trigger frame is used only to trigger an EHT station to transmit an EHT TB PPDU, and may further include the case in which the trigger frame is used to trigger an EHT station to transmit an EHT TB PPDU and simultaneously to trigger an HE / 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: the SRP1 field and the SRP2 field. The SRP1 and SRP2 fields indicate the SRP values ​​for different subchannels, respectively, where the SRP value is equal to the sum of the AP's transmit power and the maximum interference power that the AP may receive in the corresponding subchannel. It should be understood that the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU may have other names, such as the PSR1 and PSR2 fields. This is not limited to this embodiment of the present application.

[0184] The trigger frame may hold first instruction information, which may indicate the values ​​of the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU, or the first instruction information may indicate the value of the SRP2 field in the U-SIG of the EHT TB PPDU.

[0185] In one embodiment, the first instruction information may be placed in the uplink space reuse field of the common information field of the trigger frame. For a method of setting the value of the SRP field in U-SIG in the process of sending the EHT TB PPDU by STA, see the description of Embodiment 1. Details are not repeated here. In this embodiment, the trigger frame does not include the second instruction information. Therefore, the U-SIG reserved field in the U-SIG portion of the EHT TB PPDU is set to the default value. Alternatively, the trigger frame includes the second instruction information, which is placed in a special user information field. Therefore, the U-SIG reserved field in the U-SIG portion of the EHT TB PPDU is set to the value indicated by the second instruction information.

[0186] In another embodiment, part of the first instruction information is placed in the uplink space reuse field of the trigger frame's common information field, and part of it is placed in the uplink EHT space reuse field of the trigger frame's common information field. Alternatively, the first instruction information is entirely placed in the uplink EHT space reuse field of the trigger frame's common information field. For how the value of the SRP field in U-SIG is set in the process of sending the EHT TB PPDU by STA, see the description of Embodiment 2. Details are not repeated here. In this embodiment, the trigger frame does not contain the second instruction information. Therefore, the U-SIG reserved field in the U-SIG portion of the EHT TB PPDU is set to its default value. Alternatively, the trigger frame contains the second instruction information, which is placed in a special user information field. Therefore, the U-SIG reserved field in the U-SIG portion of the EHT TB PPDU is set to the value indicated by the second instruction information.

[0187] In yet another embodiment, both the first instruction information and the second instruction information may be placed within the user information field of the trigger frame, where the user information field is a special user information field.

[0188] In one embodiment, the special user information field described above does not need to hold the complete value of AID12. Only the most significant bit needs to be set to 1, and one of the following 11 bits is fixed to 0, so the value can be distinguished from existing values ​​of AID12 that are already in use. The other 10 bits can be used to transmit information. 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 one of 2007, 2008 to 2044, or 2046 to 4095, for example, the preset value is 2044. In addition, second instruction information is also placed in the special user information field.

[0189] For EHT stations, the AID12 field in the user information field within the trigger frame may be set to a special value (e.g., AID12=2044 or 2207) or an unassigned AID, or the AID12 field may be set to an incomplete AID12 value, allowing the EHT station to identify that the user information field is used to set the SRP field and U-SIG reserved field within the U-SIG. In other words, the special user information field holds a first directive, which indicates the values ​​of the SRP1 and / or SRP2 fields within the U-SIG. The special user information field further holds a second directive, which indicates the values ​​of the U-SIG reserved field within the U-SIG. It should be understood that HE stations do not parse user information fields where the AID12 field becomes a special value within the trigger frame, or HE stations receive user information fields where the AID12 field becomes a special value, indicating that the field is irrelevant to the HE station. In other words, the first directive added to the trigger frame does not affect the behavior of the HE station.

[0190] If the first instruction information indicates the values ​​of the SRP1 and SRP2 fields in the U-SIG, then 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. It should be further understood that the first field may be called the UL SRP1 field for the U-SIG, and the second field may be called the UL SRP2 field for the U-SIG. The first and second fields may have other names; this is not limited to 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 and second fields 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] Figure 15a is a schematic diagram showing the SRP in the U-SIG of a trigger frame according to one embodiment of the present application. As shown in Figure 15a, the user information fields of the trigger frame include the AID12 field, the UL SRP1 field for U-SIG, the UL SRP2 field for U-SIG, and the UL U-SIG reservation instruction field. The value of the AID12 field is a special value. The UL SRP1 and UL SRP2 fields for U-SIG are placed 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 AP's transmit power on the primary 160 MHz channel and the maximum interference power that the AP may receive. The value indicated by the UL SRP2 field for U-SIG is equal to the sum of the AP's transmit power on the secondary 160MHz channel and the maximum interference power that the AP may receive. The UL U-SIG reserved indication field indicates the value of the U-SIG reserved field when the STA transmits the EHT TB PPDU.

[0193] If the first instruction information indicates only the value of the SRP2 field in the U-SIG, the four bits following the AID12 field in the user information field are used to hold the first instruction information. In other words, these four bits indicate the value of the SRP2 field in the U-SIG. These four bits may be called the UL SRP2 field for the U-SIG, and these four bits may have other names. This is not limited to this embodiment of the present application. Optionally, if the first instruction information indicates only the value of the SRP2 field in the U-SIG, four reserved bits in the common information field of the trigger frame, for example, the HE-SIG-A2 reserved field or four reserved bits in the reserved field, may be used to hold the first instruction information. In other words, these four reserved bits indicate the value of the SRP2 field in the U-SIG. The common information field of the trigger frame includes four 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 four UL SRP fields included in the common information field of the trigger frame, i.e., SRP1 = min(UL SRP1, UL SRP2, UL SRP3, UL SRP4), and sets the value of the SRP2 field in the U-SIG to the value of the UL SRP2 field for U-SIG in the special user information field of the trigger frame. The SRP1 field in the U-SIG corresponds to the first 160MHz bandwidth in ascending order of frequency, and the SRP2 field in the U-SIG corresponds to the second 160MHz bandwidth in ascending order of frequency. The EHT station further sets the value of the U-SIG reservation field in the U-SIG of the transmitted EHT TB PPDU to the value of the UL U-SIG reservation instruction field in the special user information field of the trigger frame.

[0194] Figure 15b is another schematic diagram showing the SRP in the U-SIG of a trigger frame according to one embodiment of the present application. As shown in Figure 15b, in one embodiment, the common information field of the trigger frame includes four UL SRP fields, the four UL SRP fields each indicating the SRP values ​​of four 40 MHz subchannels in the primary 160 MHz channel in ascending order of frequency. Alternatively, in another embodiment, the HE-SIG-A2 reserved field and / or reserved field of the common information field of the trigger frame are used as UL EHT SRP fields to indicate the SRP values ​​of the primary 160 MHz channel. Special user information fields of the trigger frame include the AID12 field, the UL SRP2 field for the U-SIG, and so on. The value of the AID12 field is a special value or an incomplete AID12 value. The UL SRP2 field for the U-SIG is located 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 AP's transmit power on the secondary 160MHz channel and the maximum interference power that the AP can receive, or equal to the SRP value on the secondary 160MHz 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, i.e., SRP1 = min(UL SRP1, UL SRP2, UL SRP3, UL SRP4), and sets the value of the SRP2 field in the U-SIG to the value of the UL SRP2 field for U-SIG in the special user information field of the trigger frame. The SRP1 field in the U-SIG corresponds to the first 160MHz bandwidth in ascending order of frequency, and the SRP2 field in the U-SIG corresponds to the second 160MHz bandwidth in ascending order of frequency. The EHT station further sets the value of the U-SIG reservation field in the U-SIG of the transmitted EHT TB PPDU to the value of the UL U-SIG reservation instruction field in the special user information field of the trigger frame.

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

[0197] In this embodiment of the present application, for a 320 MHz bandwidth, it may be found that a special user information field in the trigger frame independently indicates the space 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. If the trigger frame does not contain the special user information field described above, the space reuse parameter for the U-SIG of the EHT TB PPDU may be set based on the indications of the uplink space reuse field and / or uplink EHT space 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 this application, the relationship between the U-SIG and the trigger frame in the EHT TB PPDU can be summarized as shown in Table 9.

[0199] [Table 9A] [Table 9B]

[0200] Please understand that the subfields included in the U-SIG in Table 9 are merely examples, and that some subfields may be included in addition to those listed. Furthermore, please understand that the subfields in Table 9 may have other names, and this is not limited to the examples in this application. The number of bits occupied by each subfield may be adjusted based on the actual circumstances, and this is not limited to this application.

[0201] Embodiment 4 Embodiments 1 to 3 described above describe how to configure the SRP field and U-SIG reserved field of a U-SIG when one or more stations transmit an EHT TB PPDU in different scenarios. Embodiment 4 of this application mainly describes a space reuse method based on space reuse parameters in 802.11be.

[0202] In practical applications, Embodiment 4 of this application may be implemented by reference to any one of Embodiments 1 through 3, or individually. This is not limited to this embodiment of the application.

[0203] 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 will be indicated as BSS1. The second AP and the second STA belong to a different BSS, which will be indicated as BSS2. The first AP and the second AP are located within the OBSS formed by BSS1 and BSS2. Therefore, the transmit power used when the second AP transmits a parameterized spatial reuse transmission (PSRT) PPDU must be limited in order to reduce interference to the reception of the first AP's EHT TB PPDU caused by the energy generated when the second AP transmits a PSRT PPDU.

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

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

[0206] S501: The first AP transmits a parameterized spatial reuse reception (PSRR) PPDU containing a trigger frame, which is used to schedule the first STA to transmit an EHT TB PPDU. In response, the first STA receives the trigger frame.

[0207] It should be understood that the PSRR PPDU may contain 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 contained in the PSRR PPDU is not described in this embodiment of the present application.

[0208] Specifically, a PSRR PPDU containing a trigger frame is used to schedule a station to perform uplink data transmission, for example, to transmit an uplink EHT TB PPDU. As shown in Figures 6a-1, 6a-2, or 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 also include four 4-bit uplink spatial reuse parameter (UL SRP) fields, which represent the sum of the AP's transmit power and the maximum interference power that the AP may receive. The four UL SRP fields included in the uplink spatial reuse field are the UL SRP1 field, UL SRP2 field, UL SRP3 field, and UL SRP4 field. For embodiments of the four UL SRP fields in different bandwidths, refer to any one of Embodiments 1 through 3, which are not repeated here in detail.

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

[0210] In this embodiment of the present application, the "first AP" 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 embodiment of step S502 in this embodiment of the present application, please refer to the embodiment of step S103 in Embodiment 1. Details will not be repeated here. Alternatively, for the embodiment of step S502 in this embodiment of the present application, please refer to the embodiment of step S203 in Embodiment 2. Details will not be repeated here. Alternatively, for the embodiment of step S502 in this embodiment of the present application, please refer to the embodiment of step S303 in Embodiment 3. Details will not be repeated here.

[0212] S503: The second AP determines the transmit power of the parameterized space reuse transmit PSRT PPDU based on the values ​​individually indicated by the SRP1 and SRP2 fields 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 a PSRT PPDU based on the PSRT PPDU's transmit power. In response, the second STA receives the PSRT PPDU.

[0214] Specifically, the first AP and the second AP are located within the OBSS formed by BSS1 and BSS2. Therefore, the second AP can also receive the trigger frame transmitted by the first AP. Thus, after the first AP transmits a PSRR PPDU containing the trigger frame, the second AP receives the PSRR PPDU containing the trigger frame. The trigger frame contains four UL SRP fields, and the value indicated by one UL SRP field is equal to the sum of the first AP's transmit power and the maximum interference power that the first AP may receive. The second AP may further receive an EHT TB PPDU transmitted by the first STA, the U-SIG of the EHT TB PPDU containing SRP1 and SRP2 fields. The value indicated by SRP1 is equal to the sum of the first AP's transmit power on the first subchannel and the maximum interference power that the first AP may receive. The value indicated by the SRP2 field is the sum of the transmit power of the first AP in the second subchannel and the maximum interference power that the first AP may receive. The bandwidth values ​​of the first and second subchannels are equal to half the bandwidth of the EHT TB PPDU, and the frequency of the first subchannel is less than the frequency of the second subchannel.

[0215] After the second AP receives the PSRR PPDU and EHT TB PPDU (i.e., it is determined that the first STA has transmitted the EHT TB PPDU), the second AP calculates the transmit power to be used to transmit the PSRT PPDU based on the power at the time the PSRR PPDU was received (i.e., the received power level, RPL), the values ​​individually indicated by the SRP1 and SRP2 fields 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 transmit power. In response, the second STA receives the PSRT PPDU and sends a response frame back to the second AP in response to the PSRT PPDU.

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

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

[0218] log in equation (1-1) 10(PSRT PPDU bandwidth / 20MHz) represents 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 triggering PPDU (the PPDU containing the trigger frame), or the non-HE PPDU portion, averaged over all antennas used to receive the PPDU. Bandwidth normalization is performed in equation (1-1) using the values ​​of SRP and PRL. The value indicated by the UL SRP field is equal to the sum of the AP's (in this case, the first AP's) transmit power and the maximum interference power that the AP (in this case, the first AP) can receive. Therefore, it should be understood that the maximum interference power that the AP (in this case, the first AP) can receive is determined by the value of the Spatial Reuse Parameter (SRP).

[0219] Optionally, the second AP may obtain the RPL using the PSRR PPDU, but not the UL SRP within the PSRR PPDU, and obtain the SRP using the U-SIG of the EHT TB PPDU. Specifically, the second AP calculates the transmit power used to transmit the PSRT PPDU based on the power (i.e., RPL) when the PSRR PPDU is received and the values ​​individually indicated by the SRP1 and SRP2 fields included in the U-SIG. Alternatively, the second AP may obtain both the RPL and UL SRP using the PSRR PPDU, and if it is determined that the EHT TB PPDU has been received, the second AP does not obtain the SRP in the U-SIG. Specifically, the second AP calculates the transmit power used to transmit the PSRT PPDU based on the power (i.e., RPL) when the PSRR PPDU is received and the values ​​individually indicated by the four UL SRP fields.

[0220] Optionally, equation (1-1) described above may be equivalent to equation (1-2) below. Normalized transmit power of the second AP ≤ Transmit 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-hand side of equation (1-2), that is, the transmission power of the first AP minus the power the second AP uses when it 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, equation (1-2) may be equivalent to equation (1-3) below. Normalized transmit 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] Equation (1-3) may also be equivalent to the following equation (1-4). Normalized transmit power 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-hand side of equation (1-4), that is, the normalized transmit power 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 equation (1-5) below. Interference from 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 space reuse method for EHT TB PPDUs, which may be found to provide compatibility when there are two SRP fields in a U-SIG and to enable space reuse in the EHT standard. In this way, devices in the overlapping basic service set can perform transmissions simultaneously, thereby increasing transmission efficiency.

[0226] In an optional embodiment, the space reuse method provided in this application may be applied to a second STA. Figure 18 is another schematic flowchart of the space reuse method according to one embodiment of this application. In this embodiment of this application, it will be understood that the first AP and the first STA belong to the same BSS, which will be shown as BSS1. The second AP and the second STA belong to a different BSS, which will be shown as BSS2. The first AP and the second STA are located within the OBSS formed by BSS1 and BSS2. Therefore, the transmit power used when the second STA transmits the response frame must be limited in order to reduce interference to the reception of the EHT TB PPDU by the first AP caused by the energy generated when the second STA transmits the response frame of the PSRT PPDU.

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

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

[0229] S601: The first AP transmits a parameterized space reuse received PSRR PPDU containing a trigger frame, which is used to schedule the first STA to transmit an EHT TB PPDU. In response, the first STA receives the trigger frame.

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

[0231] Specifically, for embodiments of steps S601 and S602 in this embodiment of the present application, please refer to embodiments of steps S501 and S502 in the embodiment shown in Figure 16. Details will not be repeated here.

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

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

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

[0235] Specifically, for embodiments of steps S604 and S605 in this embodiment of the present application, please refer to embodiments of steps S503 and S504 in the embodiment shown in Figure 16. Details are not repeated here. Please understand that the transmit power of the response frame in response to the PSRT PPDU in step S604 corresponds to the transmit power of the PSRT PPDU in step S503. For a method of determining the transmit power of the response frame in step S604, please refer to the method of determining the transmit power of the PSRT PPDU in step S503. Details are not repeated here.

[0236] Optionally, a second AP may be further placed within the OBSS formed by BSS1 and BSS2. Therefore, in order to reduce interference to the reception of the EHT TB PPDU by the first AP caused by the energy generated when the second STA transmits the response frame of the PSRT PPDU, and the energy generated when the second AP transmits the PSRT PPDU, both the transmit power used when the second STA transmits the response frame and the transmit power used when the second AP transmits the PSRT PPDU must be limited. Therefore, when the first AP, the second STA, and the second AP are all located within the OBSS formed by BSS 1 and BSS 2, the second AP may determine the transmit power of the PSRT PPDU before transmitting the PSRT PPDU (i.e., before step S603) based on one or more of the values ​​indicated individually by the SRP1 and SRP2 fields in the U-SIG of the EHT TB PPDU, the values ​​indicated individually by the four UL SRP fields 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 transmit power of the PSRT PPDU.

[0237] This embodiment of the present application provides a space reuse method for EHT TB PPDUs, which may be found to provide compatibility when there is one or two SRP fields in a U-SIG, and that space reuse is implemented in the EHT standard. In this way, devices in the overlapping basic service set can perform transmissions simultaneously, thereby increasing transmission efficiency.

[0238] The above description details the method provided in this application. To facilitate the implementation of the aforementioned solution in the embodiments of this application, embodiments of this application further provide corresponding apparatus or devices.

[0239] In this embodiment of the present application, the AP and STA may be divided into functional modules based on the method examples described above. For example, functional modules may be obtained through division based on corresponding functions, or two or more functions may be integrated into a single processing module. The integrated module may be implemented in hardware form or in the form of a software functional module. Note that in the embodiments of the present application, the modular division is an example and merely a logical division of functions. In actual embodiments, other division methods may be used. The communication device in the embodiments of the present application will now be described in detail with reference to Figures 19 to 22. The communication device is an access point or a station. Furthermore, the communication device may be a device within the AP, or the communication device may be a device within the STA.

[0240] When an integrated unit is used, Figure 19 is a schematic diagram of the structure of a communication device 1 according to one embodiment of the present application. The communication device 1 may be an AP or a chip within an AP, for example, a Wi-Fi chip. As shown in Figure 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, which is used to trigger a 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 space reuse parameters SRP1 and SRP2 fields in the universal signal field U-SIG of the EHT TB PPDU are determined based on the values ​​indicated by one or more uplink space reuse parameters UL SRP fields in the common information field of the trigger frame, respectively. Specifically, see the description of the EHT TB PPDU in step S103 of Embodiment 1 described above. 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 a 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 reserved field of the common information field are used as indicators for the UL EHT space reuse parameter, and include an UL EHT SRP field.

[0243] The transceiver unit 11 is further configured to receive an EHT TB PPDU transmitted by the station, and the U-SIG of the EHT TB PPDU includes two SRP fields, 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 and UL SR2 fields 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 U-SIG may be equal to the minimum value of the UL SR3 and UL SR4 fields among 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 Figure 8b, if 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 and SRP2 fields are equal to the minimum value of the four space reuse fields indicated by the uplink space reuse field in the trigger frame, such that SRP1 = SRP2 = min{UL SRP1, UL SRP2, UL SRP3, UL SRP4}.

[0247] Specifically, please refer to the description of the EHT TB PPDU or aggregated PPDU in step S203 of Embodiment 1 described above. The details will not be repeated here.

[0248] The communication device 1 in the first design and the communication device 1 in the second design may perform Embodiment 1 in correspondence, 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 1 of the method described above. For brevity, further details will not be described 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 Embodiment 2 described above. 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 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 2 of the aforementioned 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 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 an EHT TB PPDU, in which the U-SIG of the EHT TB PPDU includes either a U-SIG reserved field and an SRP1 field, or 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, which is determined based on whether the trigger frame contains a special user information field. If the trigger frame does not contain a special user information field, the value of the U-SIG reservation field is set to the default value. If the trigger frame contains 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 and SRP2 fields in the U-SIG of the EHT TB PPDU.

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

[0261] The communication device 2 in the first design may perform the actions of Embodiments 1 to 3 in correspondence, and 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 methods. For brevity, further details will not be described here.

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

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

[0264] Optionally, the transceiver unit 32 is further configured to receive a trigger frame, which contains four UL SRP fields. The value indicated by one UL SRP field is the sum of the transmit 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 located within the same OBSS. The first AP is 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 SRP1 and SRP2 fields. The value indicated by the SRP1 field is the sum of the transmit 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 transmit 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 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 located within the same OBSS.

[0266] In this design, communication device 3 may perform the corresponding actions shown in Figures 13A and 13B, and it should be understood that the aforementioned operations or functions of the units within communication device 3 are individually configured to perform the corresponding operations of the second AP in Figures 13A and 13B. For brevity, further details are not described here.

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

[0268] Optionally, the transceiver unit 32 is further configured to receive a trigger frame, which contains four UL SRP fields. The value indicated by one UL SRP field is the sum of the transmit 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 located within the same OBSS. The first AP is 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 SRP1 and SRP2 fields. The value indicated by the SRP1 field is the sum of the transmit 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 transmit 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 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 located within the same OBSS.

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

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

[0272] In this design, communication device 3 may perform the corresponding operation in Figure 18, and it should be understood that the aforementioned operation or function of the units within communication device 3 is individually configured to perform the corresponding operation of the second STA in Figure 18. For brevity, further details are not described here.

[0273] The above has described the AP and STA in the embodiments of the present application. Below, the 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. If it is necessary to transmit data wirelessly, the processor 1001 performs baseband processing on the data to be transmitted, and then outputs the baseband signal to the radio frequency circuit. After performing radio frequency processing on the baseband signal, the radio frequency circuit transmits the radio frequency signal in the form of electromagnetic waves 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 antenna may be located independently of the processor that performs baseband processing. For example, in a distributed scenario, the radio frequency circuit and antenna may be located separately and independently of the communication equipment.

[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 of Embodiment 1. The processor 1001 may be configured to generate the trigger frame transmitted in step S101 of Figure 7a and / or to perform another process of the technology described herein. The transceiver 1002 may be configured to perform steps S101 and S104 of Figure 7a and / or to perform another process of the technology described herein.

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

[0282] In the design, the communication device 1000 may be configured to perform the functions of the AP of Embodiment 1. The processor 1001 may be configured to generate the trigger frame transmitted in step S201 of Figure 8a and / or to perform another process of the technology described herein. The transceiver 1002 may be configured to perform steps S201 and S204 of Figure 8a and / or to perform another process of the technology described herein.

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

[0284] In the design, the communication device 1000 may be configured to perform the functions of the AP of Embodiment 2. The processor 1001 may be configured to generate the trigger frame transmitted in step S301 of Figure 11 and / or to perform another process of the technology described herein. The transceiver 1002 may be configured to perform steps S301 and S304 of Figure 11 and / or to perform another process of the technology described herein.

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

[0286] In the design, the communication device 1000 may be configured to perform the functions of the AP of Embodiment 3. The processor 1001 may be configured to generate the trigger frame transmitted in step S401 of Figure 14 and / or to perform another process of the technology described herein. The transceiver 1002 may be configured to perform steps S401 and S404 of Figure 14 and / or to perform another process of the technology described herein.

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

[0288] In the design, the communication device 1000 may be configured to perform the functions of the second AP of Embodiment 4. The processor 1001 may be configured to perform step S503 in Figure 16 and / or to perform another process of the technology described herein. The transceiver 1002 may be configured to perform step S504 in Figure 16 and / or to perform another process of the technology described herein.

[0289] In the design, the communication device 1000 may be configured to perform the functions of the second STA of Embodiment 4. The processor 1001 may be configured to perform step S604 in Figure 18 and / or to perform another process of the technology described herein. The transceiver 1002 may be configured to perform step S605 in Figure 18 and / or to perform another process of the technology described herein.

[0290] In any of the designs described above, the processor 1001 may include a transceiver configured to perform receiving and transmitting 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 perform transmitting and receiving functions may be separate 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 of the designs described above, the processor 1001 can store instructions. These instructions may be computer programs. The computer programs are executed by the processor 1001, thereby enabling the communication device 1000 to perform the method described in any of the embodiments of the methods described above. The computer programs are executed by the processor 1001 It may be fixed inside. In this case, the processor 1001 may be implemented by hardware.

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

[0293] The scope of communication devices described in this application is not limited thereto, and the structure of communication devices is not limited by Figure 19. A communication device may be a standalone device or part of a larger device. For example, a communication device may be: (1) An independent integrated circuit IC, chip, or chip system or subsystem, (2) A set comprising one or more ICs, wherein the IC set may optionally further include a storage component configured to store data and computer programs, (3) ASIC, for example, modem, (4) Modules that can be embedded in another device, (5) Receivers, terminals, intelligent terminals, mobile phones, wireless devices, handheld devices, mobile units, in-vehicle devices, network devices, cloud devices, artificial intelligence devices, etc. (6) Another device, etc.

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

[0295] A general-purpose processor for implementing AP includes processing circuits and input / output interfaces that are internally connected to and communicate with the processing circuits.

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

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

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

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

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

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

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

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

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

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

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

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

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

[0309] One embodiment of this application further provides a computer program product. When the computer program product runs on a computer, the computer is enabled to perform the method in any one of the embodiments described above.

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

[0311] One embodiment of this application further provides a wireless communication system including an AP and an STA. The AP and STA may perform the method in any one of the embodiments described above.

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

[0313] Those skilled in the art will understand that in one or more of the above-mentioned examples, the functions described in this application may be implemented by hardware, software, firmware, or any combination thereof. When the functions are implemented by software, the above-mentioned functions may be stored in a computer-readable medium or transmitted as one or more instructions or codes in a computer-readable medium. Computer-readable storage media include computer storage media and communication media. Communication media include any medium that facilitates the transmission of computer programs from one location to another. Storage media may be any available medium accessible from a general-purpose or dedicated computer.

[0314] The specific embodiments described above further elaborate on the objectives, technical solutions, and beneficial effects of this application. It should be understood that the foregoing descriptions are merely specific embodiments of this application and are not intended to limit the scope of protection. Any modifications, equivalent substitutions, improvements, etc., made based on the technical solutions of this application shall be included within the scope of protection. [Explanation of Symbols]

[0315] 1. Communication device 11 Transceiver Unit 12 Processing Units 2. Communication device 21 Transceiver Unit 22 Processing Units 221 U-SIG Reservation Field Setting Subunit 222 SRP Field Setting Subunit 3. Communication equipment 31 Decision Unit 32 transceiver units 1000 Communication devices 1001 Processor 1002 Transceiver 1004 memory

Claims

1. A method for specifying spatial reuse parameters within a trigger frame, The steps include: sending a trigger frame by an access point AP, the trigger frame being used to trigger a station to send an ultra-high throughput trigger-based physical layer protocol data unit (EHT TB PPDU); The AP receives the EHT TB PPDU transmitted by the station, wherein the value indicated by the spatial reuse parameter SRP in the universal signal field U-SIG of the EHT TB PPDU is determined based on the value indicated by the uplink EHT spatial reuse parameter UL EHT SRP and one or more values ​​indicated by the uplink spatial reuse parameter UL SRP field in the common information field of the trigger frame, and the value of the U-SIG reserved field in the U-SIG of the EHT TB PPDU is determined based on the value of the U-SIG reserved instruction field in the trigger frame. Methods that include...

2. The method according to claim 1, wherein the U-SIG reservation instruction field is located within a special user information field of the user information list field of the trigger frame.

3. The method according to claim 2, wherein the associated identifier AID12 of the special user information field is a preset value or an incomplete AID12 value.

4. The method according to claim 2 or 3, wherein the special user information field further includes one UL SRP field for the U-SIG, or two UL SRP fields for the U-SIG.

5. The method according to claim 1, wherein the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, or further includes an uplink EHT space reuse parameter UL EHT SRP field in the reserved field of the common information field.

6. The U-SIG includes the SRP1 field and the SRP2 field, The value of the SRP1 field in the U-SIG is equal to any value of the UL SR1 field and UL SR2 field in the four space reuse fields indicated by the uplink space reuse field of the trigger frame, The method according to claim 5, wherein the value of the SRP2 field in the U-SIG is equal to any one of the UL SR3 field and UL SR4 field in the four space reuse fields, as indicated by the uplink space reuse field of the trigger frame.

7. The method according to claim 1, wherein an HE / EHT subfield indicating an EHT STA for transmitting a high-efficiency trigger-based physical layer protocol data unit HE TB PPDU or EHT TB PPDU is set in a reserved field within the common information field of the trigger frame.

8. The trigger frame is The uplink EHT PPDU bandwidth extension field is used in conjunction with the UL(HE)BW field to jointly indicate the uplink HE bandwidth and the uplink EHT bandwidth, or The method according to claim 1, further comprising a special user presence indicator subfield that indicates whether a special user information field exists.

9. A communication device used in a wireless local area network (WLAN), A processor configured to generate trigger frames, 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, the value indicated by the spatial reuse parameter SRP in the universal signal field U-SIG of the EHT TB PPDU being determined based on the value indicated by the uplink EHT spatial reuse parameter UL EHT SRP and one or more values ​​indicated by the uplink spatial reuse parameter UL SRP field in the common information field of the trigger frame, and the value of the U-SIG reserved field in the U-SIG of the EHT TB PPDU being determined based on the value of the U-SIG reserved instruction field in the trigger frame. A communication device equipped with the following features.

10. The communication device according to claim 9, wherein the U-SIG reservation instruction field is located within a special user information field of the user information list field of the trigger frame.

11. The communication device according to claim 10, wherein the associated identifier AID12 of the special user information field is a preset value or an incomplete AID12 value.

12. The communication device according to claim 10 or 11, 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.

13. The communication device according to claim 9, wherein the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, or further includes an uplink EHT space reuse parameter UL EHT SRP field in the reserved field of the common information field.

14. The U-SIG includes the SRP1 field and the SRP2 field, The value of the SRP1 field in the U-SIG is equal to any value of the UL SR1 field and UL SR2 field in the four space reuse fields indicated by the uplink space reuse field of the trigger frame, The communication device according to claim 13, wherein the value of the SRP2 field in the U-SIG is equal to one of the UL SR3 field and UL SR4 field in the four space reuse fields, as indicated by the uplink space reuse field of the trigger frame.

15. The communication device according to claim 9, wherein an HE / EHT subfield indicating an EHT STA for transmitting a high-efficiency trigger-based physical layer protocol data unit HE TB PPDU or EHT TB PPDU is set in a reserved field within the common information field of the trigger frame.

16. The trigger frame is The uplink EHT PPDU bandwidth extension field is used in conjunction with the UL(HE)BW field to jointly indicate the uplink HE bandwidth and the uplink EHT bandwidth, or The communication device according to claim 9, further comprising a special user presence indicator subfield that indicates whether a special user information field exists.

17. A method for determining spatial reuse parameter fields within a physical layer protocol data unit, The steps include: receiving a trigger frame by a station STA, the trigger frame being used to trigger the station to transmit an ultra-high throughput trigger-based physical layer protocol data unit (EHT TB PPDU); A step of transmitting the EHT TB PPDU by the station, wherein the value indicated by the spatial reuse parameter SRP in the universal signal field U-SIG of the EHT TB PPDU is determined based on the value indicated by the uplink EHT spatial reuse parameter UL EHT SRP and one or more values ​​indicated by the uplink spatial reuse parameter UL SRP field in the common information field of the trigger frame, and the value of the U-SIG reserved field in the U-SIG of the EHT TB PPDU is determined based on the value of the U-SIG reserved instruction field in the trigger frame. A method for transmitting physical layer protocols and data units (PPDUs), including the physical layer protocol.

18. The method according to claim 17, wherein the U-SIG reservation instruction field is located within a special user information field of the user information list field of the trigger frame.

19. The method 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. The method according to claim 18, wherein the special user information field further includes one UL SRP field for the U-SIG, or two UL SRP fields for the U-SIG.

21. The method according to claim 17, wherein the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, or further includes an uplink EHT space reuse parameter UL EHT SRP field in the reserved field of the common information field.

22. A communication device used in a wireless local area network (WLAN), A transceiver configured to receive a trigger frame, the trigger frame being used to trigger the communication device to transmit an EHT TB PPDU, and the transceiver, A processor configured to generate the EHT TB PPDU, wherein the value indicated by the spatial reuse parameter SRP in the universal signal field U-SIG of the EHT TB PPDU is determined based on the value indicated by the uplink EHT spatial reuse parameter UL EHT SRP and one or more values ​​indicated by the uplink spatial reuse parameter UL SRP field in the common information field of the trigger frame, and the value of the U-SIG reserved field in the U-SIG of the EHT TB PPDU is determined based on the value of the U-SIG reserved instruction field in the trigger frame. A communication device equipped with the following features.

23. The communication device according to claim 22, wherein the U-SIG reservation instruction field is located within a special user information field of the user information list field of the trigger frame.

24. The communication device according to claim 23, wherein the associated identifier AID12 of the special user information field is a preset value or an incomplete AID12 value.

25. The communication device according to claim 23, wherein the special user information field further includes one UL SRP field for the U-SIG, or two UL SRP fields for the U-SIG.

26. The communication device according to claim 22, wherein the common information field of the trigger frame includes four uplink space reuse parameter UL SRP fields, or further includes an uplink EHT space reuse parameter UL EHT SRP field in the reserved field of the common information field.

27. A computer-readable storage medium, wherein the computer-readable storage medium stores instructions, and when the instructions are executed on a computer, the computer is enabled to perform the method according to any one of claims 1 to 8.

28. A computer-readable storage medium, wherein the computer-readable storage medium stores instructions, and when the instructions are executed on a computer, the computer is enabled to perform the method according to any one of claims 17 to 21.

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