Space reuse method, apparatus, device, and medium

Abstract

A spatial reuse method, apparatus, device, and medium are provided. In this method, a first spatial reuse device receives a portion or all of a PSRR PPDU transmitted by a second spatial reuse device on a first frequency band. The first frequency band includes one or more subbands having the same bandwidth. The first spatial reuse device determines a reference transmit power for transmitting a PSRT PPDU on a second frequency band based on a value of a spatial reuse parameter SRP at a bandwidth granularity and a received power level RPL of the PSRR PPDU at a bandwidth granularity. The second frequency band includes one or more subbands having a bandwidth. The second frequency band and the first frequency band at least partially overlap. The RPL of the PSRR PPDU at the bandwidth granularity is determined based on one or more subbands in the first frequency band occupied by a portion or all of the PSRR PPDU received by the first spatial reuse device, or one or more non-punctured subbands of the first frequency band or the second frequency band. This reduces interference with reception by the spatial reuse device and improves system efficiency.

Description

Technical Field

[0001] The present disclosure relates to the field of wireless local area networks, and more particularly, to a spatial reuse method, apparatus, and medium.

Background Art

[0002] Wireless Local Area Network (WLAN) standards, including 802.11a / b / g, 802.11n, 802.11ac, 802.11ax, and the currently discussed 802.11be, have been developed over many generations. The 802.11n standard is called High Throughput (HT), the 802.11ac standard is called Very High Throughput (VHT), the 802.11ax standard is called High Efficient (HE), and the 802.11be standard is called Extremely High Throughput (EHT).

[0003] 802.11ax WLAN devices, such as access points and stations, support only half-duplex transmission. In other words, on the same spectral bandwidth or channel, only one device can transmit information, and other devices can only receive signals and cannot transmit signals. This avoids interference with the current transmitting device. However, as the density of WLAN devices increases, it has become more common for a basic service set (BSS) to overlap with other BSSs. In other words, overlapping basic service sets (OBSS) have become more common. When conventional methods are used, the transmission efficiency is very low. In this case, 802.11ax proposes a spatial reuse method. Through adaptive adjustment of the transmission power, devices within an overlapping basic service set can transmit simultaneously. This improves the transmission efficiency. However, the 802.11ax spatial reuse method has the disadvantages of high interference between devices and low system efficiency. Summary of the Invention Means for Solving the Problems

[0004] The present disclosure provides a spatial reuse solution.

[0005] A first aspect of the present disclosure provides a spatial reuse method. In this method, a first spatial reuse device receives part or all of a PSRR PPDU transmitted by a second spatial reuse device on a first frequency band. The first frequency band includes one or more sub-bands having the same bandwidth. The first spatial reuse device determines a reference transmission power for transmitting a PSRT PPDU on a second frequency band based on the value of a spatial reuse parameter (SRP) at the granularity of the bandwidth and the received power level (RPL) of the PSRR PPDU at the granularity of the bandwidth. The second frequency band includes one or more sub-bands having a bandwidth, and the second frequency band and the first frequency band at least partially overlap. The RPL of the PSRR PPDU at the granularity of the bandwidth is in the first frequency band and is determined based on one or more sub-bands occupied by part or all of the PSRR PPDU received by the first spatial reuse device, or one or more of the non-punctured sub-bands of the first frequency band or the second frequency band.

[0006] In some implementations, the reference transmission power is determined for the entire second frequency band.

[0007] In some implementations, the RPL at the granularity of the bandwidth is determined based on the overlapping sub-bands between the second frequency band and one or more sub-bands in the first frequency band that are occupied by part or all of the PSRR PPDU received by the first spatial reuse device.

[0008] In some implementations, the RPL at the granularity of the bandwidth is based on the bandwidth of the non-punctured sub-bands in one or more sub-bands in the first frequency band that are occupied by part or all of the PSRR PPDU received by the first spatial reuse device, or the bandwidth of the non-punctured sub-bands in the overlapping sub-bands between the second frequency band and one or more sub-bands in the first frequency band that are occupied by part or all of the PSRR PPDU received by the first spatial reuse device.

[0009] In some implementations, the reference transmission power is determined based on the bandwidth of the non-punctured sub-band in the second frequency band, or the bandwidth of the non-punctured sub-band in the overlapping sub-band between the second frequency band and one or more sub-bands occupied by a part or all of the PSRR PPDU received by the first spatial reuse device in the first frequency band.

[0010] In some implementations, the first spatial reuse device can determine the non-punctured sub-bands of the first frequency band based on at least one of the puncturing indication information included in the preamble in the received PSRR PPDU; the puncturing indication information included in the PSRR PPDU, where the PSRR PPDU is a non-high-throughput replicated PPDU; or the puncturing indication information included in the management frame of the basic service set BSS where the second spatial reuse device is located, where the management frame includes at least one of a beacon frame, an association response frame, a probe response frame, a neighbor report frame, or a reduced neighbor report frame.

[0011] In some implementations, the first spatial reuse device determines to puncture the PSRT PPDU. The first spatial reuse device adjusts the reference transmission power based on a predetermined offset.

[0012] In some implementations, the value of the SRP at the bandwidth granularity is adjusted by the second spatial reuse device for the punctured PSRR PPDU based on a predetermined offset.

[0013] In some implementations, the first frequency band includes a plurality of sub-bands. The value of the SRP at the bandwidth granularity is the minimum value among the plurality of values of the SRP for the plurality of sub-bands.

[0014] In some implementations, determining the reference transmission power for transmitting a PSRT PPDU in the second frequency band involves the first spatial reuse device determining the reference transmission power for transmitting a PSRT PPDU in a sub-band based on the value of the SRP for one sub-band of the first frequency band and the RPL of the PSRR PPDU of the sub-band, where the sub-band of the first frequency band is included in the second frequency band.

[0015] In some implementations, the first spatial reuse device determines not to permit transmitting a PSRT PPDU in the puncture sub-band for the overlapping sub-bands between the second frequency band and the first frequency band, or the first spatial reuse device determines that the reference transmission power in the puncture sub-band is less than a predetermined maximum transmission power.

[0016] In some implementations, the first spatial reuse device determines the reference transmission power in the puncture sub-band for the puncture sub-band in the overlapping sub-bands between the second frequency band and the first frequency band based on one or more reference transmission powers determined for one or more non-puncture sub-bands in the overlapping sub-bands between the second frequency band and the first frequency band.

[0017] In some implementations, determining the reference transmission power in the puncture sub-band involves the first spatial reuse device determining the reference transmission power in the puncture sub-band as the minimum reference transmission power among the multiple reference transmission powers determined for the multiple non-puncture sub-bands, or as the average power of the multiple reference transmission powers.

[0018] In some implementations, the first spatial reuse device determines the reference transmission power in the puncture sub-band for the puncture sub-band in the overlapping sub-bands between the second frequency band and the first frequency band based on the value of the SRP for the puncture sub-band.

[0019] A second aspect of the present disclosure provides a spatial reuse method. In this method, for a puncture-scheduled sub-band in a first frequency band that includes a plurality of sub-bands having the same bandwidth and is used by a second spatial reuse device to transmit a physical layer protocol data unit (PPDU), an operation of adjusting a value of a spatial reuse parameter SRP based on a predetermined offset, and an operation of setting the value of SRP to a first value to indicate to other spatial reuse devices that transmission of the PPDU in the puncture-scheduled sub-band is prohibited, or an operation of setting the value of SRP to a second value to indicate to other spatial reuse devices that transmission in the puncture-scheduled sub-band is permitted, is used to determine a corresponding value of SRP. Next, the second spatial reuse device transmits a punctured PPDU in a non-punctured sub-band of the first frequency band, and a trigger frame carried in the PPDU includes the determined value of SRP.

[0020] A third aspect of the present disclosure provides a communication device. The device includes a receiving module and a first determining module. The receiving module is configured to receive part or all of a PSRR PPDU transmitted by a second spatial reuse device in a first frequency band by a first spatial reuse device, and the first frequency band includes one or more sub-bands having the same bandwidth. The first determining module is configured to determine a reference transmission power for transmitting a PSRT PPDU in a second frequency band by the first spatial reuse device based on a value of a spatial reuse parameter SRP at the granularity of the bandwidth and a received power level RPL of the PSRR PPDU at the granularity of the bandwidth. The RPL of the PSRR PPDU at the granularity of the bandwidth is in the first frequency band and is determined based on one or more sub-bands occupied by part or all of the received PSRR PPDU, or one or more of the non-punctured sub-bands of the first frequency band or the second frequency band.

[0021] In some implementations, the reference transmission power is determined for the entire second frequency band.

[0022] In some implementations, the RPL at the bandwidth granularity is determined based on an overlapping sub-band between a second frequency band and one or more sub-bands occupied by a part or all of the received PSRR PPDU in a first frequency band.

[0023] In some implementations, the RPL at the bandwidth granularity is determined based on the bandwidth of a non-punctured sub-band in one or more sub-bands occupied by a part or all of the received PSRR PPDU in a first frequency band, or based on one of the bandwidths of non-punctured sub-bands in an overlapping sub-band between a second frequency band and one or more sub-bands occupied by a part or all of the received PSRR PPDU in a first frequency band.

[0024] In some implementations, the reference transmit power is determined based on one of the bandwidth of a non-punctured sub-band in a second frequency band, or the bandwidth of a non-punctured sub-band in an overlapping sub-band between a second frequency band and one or more sub-bands occupied by a part or all of the received PSRR PPDU in a first frequency band.

[0025] In some implementations, the apparatus further includes a second determination module. The second determination module is configured to determine a non-punctured sub-band of the first frequency band based on at least one of the following: puncturing indication information included in a preamble within the received PSRR PPDU; puncturing indication information included in the PSRR PPDU, where the PSRR PPDU is a non-high-throughput replicated PPDU; or puncturing indication information included in a management frame of a basic service set BSS where the second spatial reuse device is located, and the management frame includes at least one of a beacon frame, an association response frame, a probe response frame, a neighbor report frame, or a reduced neighbor report frame.

[0026] In some implementations, the apparatus further includes a third determination module configured to determine to puncture the PSRT PPDU by the first spatial reuse device. The apparatus further includes an adjustment module configured to adjust the reference transmission power based on a predetermined offset by the first spatial reuse device.

[0027] In some implementations, the value of the SRP at the bandwidth granularity is adjusted by the second spatial reuse device for the punctured PSRR PPDU based on a predetermined offset.

[0028] In some implementations, the first frequency band includes a plurality of sub-bands. The value of the SRP at the bandwidth granularity is the minimum value among the plurality of values of the SRP for the plurality of sub-bands.

[0029] In some implementations, the first determination module is configured to determine, by the first spatial reuse device, the reference transmission power for transmitting the PSRT PPDU in the sub-band based on the value of the SRP for one sub-band of the first frequency band and the RPL of the sub-band's PSRR PPDU, and the sub-band of the first frequency band is included in the second frequency band.

[0030] In some implementations, the first determination module is configured to determine, by the first spatial reuse device, not to permit transmitting the PSRT PPDU in the punctured sub-band for the punctured sub-band in the overlapping sub-band between the second frequency band and the first frequency band, or to determine that the reference transmission power in the punctured sub-band is less than a predetermined maximum transmission power by the first spatial reuse device.

[0031] In some embodiments, the first determination module is configured to determine the reference transmission power in the puncture sub-band for the puncture sub-bands in the overlapping sub-bands between the second frequency band and the first frequency band based on one or more reference transmission powers determined for one or more non-puncture sub-bands in the overlapping sub-bands between the second frequency band and the first frequency band by the first spatial reuse device.

[0032] In some embodiments, the first determination module is configured to determine the reference transmission power in the puncture sub-band as the minimum reference transmission power among a plurality of reference transmission powers determined for a plurality of non-puncture sub-bands, or as the average power of the plurality of reference transmission powers, by the first spatial reuse device.

[0033] In some embodiments, the first determination module is configured to determine the reference transmission power in the puncture sub-band for the puncture sub-bands in the overlapping sub-bands between the second frequency band and the first frequency band based on the value of the SRP for the puncture sub-bands by the first spatial reuse device.

[0034] A fourth aspect of the present disclosure provides a communication device. The communication device includes a fourth determination module and a transmission module. The fourth determination module is used to transmit a physical layer protocol data unit (PPDU), and for a puncture-scheduled sub-band in a first frequency band including a plurality of sub-bands having the same bandwidth, it adjusts the value of the spatial reuse parameter (SRP) based on a predetermined offset, and sets the value of the SRP to a first value to indicate to other spatial reuse devices that PPDU transmission in the puncture-scheduled sub-band is prohibited, or sets the value of the SRP to a second value to indicate to other spatial reuse devices that transmission in the puncture-scheduled sub-band is permitted, and is configured to determine the corresponding value of the SRP through one of the above operations. The transmission module is configured to transmit a PPDU punctured in a non-punctured sub-band of the first frequency band, and the trigger frame carried in the PPDU includes the determined value of the SRP.

[0035] A fifth aspect of the present disclosure provides a communication device. The communication device includes a processor. The processor is coupled to a memory. The memory stores instructions. When the instructions are executed by the processor, the method according to the first aspect or the second aspect of the present disclosure is performed.

[0036] A sixth aspect of the present disclosure provides a computer-readable storage medium. A program is stored in the computer-readable storage medium. When at least a part of the program is executed by a processor in a device, the device performs the method according to the first aspect or the second aspect of the present disclosure.

[0037] It should be understood that the content described in the summary part is not intended to limit the key or important features of the present disclosure, nor is it intended to limit the scope of the present disclosure. The following description facilitates the understanding of other features of the present disclosure.

[0038] The above and other features, advantages, and aspects of the embodiments of the present disclosure will become clearer with reference to the accompanying drawings and the following detailed description. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements.

Brief Description of the Drawings

[0039]

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Mode for Carrying Out the Invention

[0040] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure may be implemented in various forms and should not be construed as limited to the embodiments described herein. Conversely, these embodiments are provided so that the present disclosure can be thoroughly and completely understood. It should be understood that the accompanying drawings and embodiments of the present disclosure are merely used as examples and are not intended to limit the protection scope of the present disclosure.

[0041] As used herein, the term "comprising" and its variations indicate open inclusion, i.e., "including but not limited to". The term "based on" means "at least partially based on". The term "an embodiment" represents "at least one embodiment", and the term "another embodiment" represents "at least one another embodiment". Related definitions of other terms are provided in the following description.

[0042] In this specification, terms such as "first", "second", etc. may be used to describe various elements, but it should be understood that the elements should not be limited by these terms. These terms are only used to distinguish one element from another. When used in this specification, the term "and / or" includes any and all combinations of one or more of the listed terms.

[0043] As used herein, the term "access point" or "AP" refers to any suitable device that can enable a user terminal to access the required services. Examples of APs include routers. As used herein, the term "station" or "STA" refers to a user terminal that can access the required services through an access point (AP). Examples of stations (STAs) include personal computers, tablet computers, personal digital assistants (PDAs), and mobile phones.

[0044] WLAN devices such as APs and STAs operate in the unlicensed spectrum and obtain the opportunity to transmit physical layer protocol data units (PPDUs) or other packets or data packets by competing for channels. As described above, as the density of WLAN devices increases, it has become more common for a basic service set (BSS) to enter the basic service area of another BSS and form an overlapping basic service set (OBSS). In this case, 802.11ax proposes a spatial reuse method. Through the adaptive adjustment of transmission power, devices within the overlapping basic service set can transmit simultaneously.

[0045] FIG. 1 is a schematic diagram of an OBSS formed by partially overlapping one BSS with another BSS.

[0046] First, an Overlapping Basic Service Set (OBSS) is described. When a Basic Service Set (BSS) not associated with a station and a BSS associated with the station operate in the same frequency band (also called a channel), and the non-associated BSS is (partially or completely) within the basic service area of the associated BSS, the non-associated BSS is called the overlapping basic service set (OBSS) of the station. The basic service area is an area that includes the members of the basic service set and may also include the members of other BSSs.

[0047] In the example shown in FIG. 1, BSS105 (denoted as BSS1) and BSS110 (denoted as BSS2) partially overlap and are OBSSs with respect to each other. In FIG. 1, AP115 (denoted as AP1), STA120 (denoted as STA1), and STA125 (denoted as STA3) belong to BSS105, and AP130 (denoted as AP2) and STA135 (denoted as STA2) belong to BSS110.

[0048] Since the basic service areas of BSS1 and BSS2 partially overlap as shown in FIG. 1, when AP1 and STA1 located within BSS1 perform data transmission, AP2 located within BSS2 can receive the information transmitted by AP1 and STA1. In addition, AP2 can further receive the information transmitted by STA3. In this case, based on the spatial reuse parameters transferred by AP1, AP2 can adaptively adjust the power with which AP2 transmits a PPDU to STA2 in order to perform simultaneous transmission in the OBSS. Similarly, when AP2 and STA2 located within BSS2 perform data transmission, AP1 located within BSS1 can receive the information transmitted by AP2. In this case, AP1 can also adaptively adjust the power with which AP1 transmits a PPDU to STA1 and / or STA3 in order to perform simultaneous transmission in the OBSS based on the spatial reuse parameters transferred by AP2.

[0049] AP1 or AP2 can use a trigger frame to send spatial reuse parameters in an uplink scheduling transmission process based on the trigger frame. As shown in FIGS. 2 to 4, the uplink scheduling transmission process based on the trigger frame will be described below.

[0050] FIG. 2 is a schematic diagram of an exemplary frame format in uplink scheduling transmission based on an 802.11ax standard trigger frame.

[0051] As shown in FIG. 2, in uplink scheduling transmission based on the trigger frame, AP1 can first send a trigger frame 205, and the trigger frame 205 includes resource scheduling and other parameters used by one or more STAs to send an uplink PPDU. An exemplary format of the trigger frame 205 is shown in FIG. 3. As shown in FIG. 3, the trigger frame 205 includes a common info field 305 and a user info list field 310. The common info field 305 includes common information that all STAs need to read. The user info list field 310 includes one or more user info fields 315 that the corresponding STA needs to read.

[0052] FIG. 4 is a schematic diagram of the frame formats of the common info field 305 and the user info field 315 within the trigger frame 205.

[0053] As shown in FIG. 4, the common information field 305 includes an uplink spatial reuse (UL Spatial Reuse) subfield 405. In the user information field 315, the association identifier 12 (AID 12) subfield 410 indicates the association identifier of the STA, and the resource unit allocation (RU Allocation) subfield 415 indicates the location of the specific resource unit (RU) allocated to the STA (the STA indicated by AID 12).

[0054] After receiving the trigger frame 205, STA1 or STA3 or both analyze the user information field 315 in the trigger frame 205 that matches the AID of STA1 and / or STA3, and then, as shown in FIG. 2, transmit a high-efficiency trigger-based data packet, such as a high-efficiency trigger-based physical layer protocol data unit (HE TB PPDU) 210, on the RU indicated by the resource unit allocation subfield 415 and present in the user information field 315. STA1 and / or STA3 can further copy the UL Spatial Reuse field 405 in the received trigger frame 205 to the high-efficiency signal field A (HE-SIG-A) field 220 in the HE TB PPDU 210.

[0055] After receiving the HE TB PPDU 210, AP1 returns an acknowledgment response frame 215 to STA1 and / or STA3 to acknowledge that AP1 has received the HE TB PPDU 210.

[0056] For the meaning and function of the fields that may be included in the HE TB PPDU 210 shown in FIG. 2, please refer to Table 1 below.

[0057]

Table 1

[0058] The trigger frame 205 transmitted by AP1 can be received by STA1 or STA3 associated with AP1, and may also be received by AP2 within the OBSS. Based on the information in the uplink spatial reuse subfield 405 within the trigger frame 205, AP2 and AP1 can perform spatial reuse transmission in the OBSS. As shown in FIG. 5, an exemplary process of spatial reuse transmission for AP1 and AP2 will be described below.

[0059] FIG. 5 is a schematic flowchart of an exemplary spatial reuse transmission process 500 for 802.11ax.

[0060] First, AP1 (i.e., AP115) transmits a Parameterized Spatial Reuse Reception (PSRR) PPDU 505 including the trigger frame 205 to STA1. As shown in FIG. 4 As shown, the common information field 305 within the trigger frame 205 includes an uplink spatial reuse (UL Spatial Reuse) field 405 that carries an uplink spatial reuse parameter (UL SRP). The value of the UL SRP is the sum of the transmission power of AP1 and the maximum interference power that AP1 can accept. When the operating frequency bands of AP115 have different bandwidths, the values of UL SRP1 to UL SRP4 are set as follows. · When the bandwidth is 20 MHz, UL SRP1 = UL SRP2 = UL SRP3 = UL SRP4 indicates that the values of the UL SRP in the 20 MHz bandwidth are equal. · When the bandwidth is 40 MHz, UL SRP1 = UL SRP3 indicates the first 20 MHz subband, which can also be called a subchannel or a subblock, and UL SRP2 = UL SRP4 indicates the second 20 MHz subband. To avoid confusion caused by channel allocation, when the bandwidth is 2.4 GHz, UL SRP1 = UL SRP2. · When the bandwidth is 80 MHz, the four UL SRPs each indicate one of the four 20 MHz subbands. · When the bandwidth is 160 MHz, the four UL SRPs each indicate any 20 MHz subband in each of the four 40 MHz subbands, and the values of the two 20 MHz subbands in a 40 MHz subband are the same.

[0061] The bandwidth is indicated by the Uplink Bandwidth (UL BW) field 420 in the common information field 305 within the trigger frame 205 shown in FIG. 4.

[0062] The value of UL SRP is determined by AP1 and is the sum of the transmission power of AP1 and the maximum interference power that AP1 can accept.

[0063] As shown in Figure 2, STA1 copies the UL Spatial Reuse field 405 in the received trigger frame 205 to the HE-SIG-A field 220 of the HE TB PPDU 210 to be transmitted. In addition, AP2 also receives the trigger frame 205 transmitted by AP1. After receiving the HE TB PPDU 210 (deciding that STA1 actually transmitted the HE TB PPDU 210), AP2 calculates four values from four UL SRPs1 and / or four values from four SRPs1 in the HE TB PPDU based on the received power level (Received Power Level, RPL) of the PSRR PPDU 505, and at this power, AP2 transmits a Parameterized Spatial Reuse Transmission (PSRT) PPDU. The transmission power needs to satisfy the following equation. Transmission power for AP2 to transmit PSRT PPDU ≤ SRP-RPL, Equation (A)

[0064] Then, after detecting that the HE TB PPDU 210 has been transmitted, AP2 transmits a PSRT PPDU 510 based on the power calculated according to the above Equation (A).

[0065] In the above equation, RPL indicates the power in the frequency band of the PSRR PPDU, The transmission power for AP2 to transmit PSRT PPDU is normalized to 20 MHz, SRP: When the bandwidth of the HE TB PPDU is 160 MHz, the bandwidth is normalized to 20 MHz. When the bandwidth of the HE TB PPDU is equal to 160 MHz, the bandwidth is normalized to 40 MHz.

[0066] Through research, the inventor of the present invention has found that the above 802.11ax spatial reuse transmission method does not specifically consider transmission power normalization and does not consider the bandwidth mismatch between PSRT PPDU and PSRR PPDU. In addition, this method does not consider power normalization in the presence of the punctured preamble of PSRT PPDU and / or PSRR PPDU. As a result, the transmission power calculated by the AP is inaccurate, further causing interference between APs and reducing the system throughput.

[0067] Therefore, one embodiment of the present disclosure provides an improved spatial reuse mechanism. According to this mechanism, in the spatial reuse transmission process of two devices (separately referred to as the first spatial reuse device and the second spatial reuse device), when determining the transmission power of PSRT PPDU in the operating frequency band of the first spatial reuse device, the first spatial reuse device normalizes the value of SRP and the received power level (RPL) of PSRR PPDU to the bandwidth of the sub-band. Specifically, after receiving the PSRR PPDU transmitted by the second spatial reuse device in the operating frequency band of the second spatial reuse device (referred to as the first frequency band including one or more sub-bands having the same bandwidth), the first spatial reuse device, based on the value of SRP at the granularity of the bandwidth and the received power level (RPL) of PSRR PPDU at the granularity of the bandwidth, determines the reference transmission power for transmitting PSRT PPDU in the operating frequency band of the first spatial reuse device (referred to as the second frequency band including one or more sub-bands having the bandwidth).

[0068] In addition, the first spatial reuse device determines the RPL of the PSRR PPDU at the bandwidth granularity based on the non-punctured subbands of the first frequency band or the second frequency band, and / or one or more subbands occupied by part or all of the PSRR PPDU received by the first spatial reuse device. In this way, when calculating the transmission power of the PSRT PPDU, the first spatial reuse device can consider the bandwidth matching and / or puncturing of the PSRT PPDU and the PSRR PPDU.

[0069] In this way, when calculating the transmission power of the PSRT PPDU, the first spatial reuse device can consider the bandwidth normalization of the PSRT PPDU and the PSRR PPDU, as well as the bandwidth matching and / or puncturing. This spatial reuse mechanism improves the accuracy of calculating the transmission power of the PSRT PPDU, reduces the interference to the reception of the spatial reuse device, and improves the system efficiency.

[0070] FIG. 6 shows an exemplary environment 600 in which embodiments of the present disclosure may be implemented.

[0071] As shown in FIG. 6, environment 600 includes two spatial reuse devices, a first spatial reuse device 602 and a second spatial reuse device 604. In this example, both the first spatial reuse device 602 and the second spatial reuse device 604 are implemented as access points (APs). Environment 600 further includes STAs 606, 608, and 610. STAs 606 and 608 can communicate with the first spatial reuse device 602, and STA 610 can communicate with the second spatial reuse device 604. The first spatial reuse device 602 and the second spatial reuse device 604 can communicate with STAs 606, 608, and 610 wirelessly. The communication can comply with any suitable communication technology and corresponding communication standards. As shown in FIG. 6, the first spatial reuse device 602, STA 606, and STA 608 belong to one BSS 612, and the second spatial reuse device 604 and STA 610 belong to another BSS 614. The two BSSs 612 and 614 are OBSSs. In some embodiments, in BSS 612, only one STA can communicate with the first spatial reuse device 602. In BSS 614, multiple STAs can communicate with the second spatial reuse device 604.

[0072] When the second spatial reuse device 604 located within BSS 614 can perform data transmission with STA 610, the first spatial reuse device 602 located within BSS 612 can receive the information transmitted by the second spatial reuse device 604. Conversely, the second spatial reuse device 604 may also receive the information transmitted by the first spatial reuse device 602. The first spatial reuse device 602 can adaptively adjust the power with which the first spatial reuse device 602 transmits a PPDU to STA 608 based on the spatial reuse parameters transferred by the second spatial reuse device 604. Similarly, the second spatial reuse device 604 can also adaptively adjust the power with which the second spatial reuse device 604 transmits a PPDU to STA 610 based on the spatial reuse parameters transferred by the first spatial reuse device 602.

[0073] The first spatial reuse device 602 and the second spatial reuse device 604 are implemented as access points (APs), and it should be understood that this is merely an example and not a limitation. The first spatial reuse device 602 and the second spatial reuse device 604 of the present disclosure are not limited to the APs in the example, and may be various other devices suitable for spatial reuse transmission according to specific implementation forms and scenarios, including but not limited to APs and STAs such as communication servers, routers, switches, bridges, computers, and mobile phones. In addition, FIG. 6 shows only an example where the devices communicating with the first spatial reuse device 602 and the second spatial reuse device 604 are STAs. The present disclosure is not limited thereto and depends on specific implementation forms and scenarios. The device may be another communication device including but not limited to APs and STAs such as communication servers, routers, switches, bridges, computers, and mobile phones.

[0074] It should also be understood that the environment 600 shows, for illustrative purposes only, two spatial reuse devices and three devices communicating with them, namely STAs 606, 608, and 610. However, embodiments of the present disclosure may be applied to other numbers of spatial reuse devices, and these spatial reuse devices can communicate with an appropriate number of other devices.

[0075] According to some embodiments of the present disclosure, after determining to perform spatial reuse transmission with the second spatial reuse device 604, the first spatial reuse device 602 determines the transmission power for transmitting the PSRT PPDU based on the value of the SRP normalized to the bandwidth of the sub-band in the operating frequency band, and the RPL of the PSRR PPDU from the second spatial reuse device 604.

[0076] Hereinafter, with reference to FIGS. 7A, 7B, and 7C, an exemplary spatial reuse transmission process between a first spatial reuse device 602 and a second spatial reuse device 604 will be described. In the example shown in FIGS. 7A, 7B, and 7C, both the first spatial reuse device 602 and the second spatial reuse device 604 are implemented as APs separately denoted as AP2 and AP1.

[0077] FIG. 7A is a schematic diagram of a spatial reuse transmission process 700A according to some embodiments of the present disclosure.

[0078] As shown in FIG. 7A, in accordance with 802.11be, AP1 (as an example of the second spatial reuse device 604) transmits a PSRR PPDU 701 carrying a trigger frame to STA1. In some embodiments, the PSRR PPDU 701 can be any PPDU (e.g., a PSRR PPDU carrying a management frame), and then AP2 acquires the RPL using only the PSRR PPDU. The value of the SRP is acquired using any PPDU (e.g., an HE / EHT TB PPDU) that carries the SRP and is transmitted by STA1. Further explanation will be provided below with reference to FIG. 7C.

[0079] The main difference between process 700 and process 500 is that the PSRR PPDU 701 carrying the trigger frame 205 can schedule two types of PPDUs, namely the HE TB PPDU and / or the EHT TB PPDU of STA1. AP2 (as an example of the first spatial reuse device 602) can perform spatial reuse based on the HE TB PPDU and / or the EHT TB PPDU. In some embodiments, AP2 does not receive (or is not based on) the HE TB PPDU and / or the EHT TB PPDU, but can directly perform spatial reuse using the PSRR PPDU carrying the trigger frame. Further explanation will be provided below with reference to FIG. 7B.

[0080] As shown in FIG. 7A, after receiving a trigger frame in which the common information field includes an uplink spatial reuse (UL Spatial Reuse) field and / or a special user field includes an EHT uplink spatial reuse field, STA1 transmits HE TB PPDU 702 and / or EHT TB PPDU 703. The subsequent process in which AP2 transmits a PSRT PPDU is the same as the spatial reuse transmission process 500 of 802.11ax. Details are not described again here.

[0081] An example using a trigger frame SRP is described below with reference to FIG. 7D.

[0082] FIG. 7D is a schematic diagram of the frame format of some sub-fields of the common information field and the user information field included in the trigger frame according to some embodiments of the present disclosure.

[0083] As shown in FIG. 7D, the common information field 705 in the trigger frame includes four uplink parameterized spatial reuse (UL PSR) fields 710, all of which have a length of 4 bits. In the frame format shown in FIG. 7D, the user information list field 715 further includes a special user information field, that is, an association identifier 12 (AID 12) field 720. The field 720 indicates a predetermined value (2007), and the field is an extension of the common information field and is used for the EHT TB PPDU and includes two 4-bit UL SRP fields 725 and 730 that are separately denoted as EHT UL SRP1 and EHT UL SRP2.

[0084] For different bandwidths, the values of EHT UL SRP1 and EHT UL SRP2 can be set as follows.

[0085] When the bandwidth is 20 MHz, EHT UL SRP1 = EHT UL SRP2.

[0086] When the bandwidth is 40 MHz, EHT UL SRP1 indicates the first 20 MHz sub - band, and EHT UL SRP2 indicates the second 20 MHz sub - band. To avoid confusion caused by channel allocation, when the bandwidth is 2.4 GHz, EHT UL SRP1 = EHT UL SRP2.

[0087] When the bandwidth is 80 MHz, the two EHT UL SRPs each indicate any 20 MHz sub - band in each of the two 40 MHz sub - bands, and the values of the two 20 MHz sub - bands in the 40 MHz sub - band are the same.

[0088] When the bandwidth is 160 MHz, the two EHT UL SRPs each indicate any 20 MHz sub - band in each of the two 80 MHz sub - bands, and the values of the four 20 MHz sub - bands in the 80 MHz sub - band are the same.

[0089] When the bandwidth is 320 MHz, the two EHT UL SRPs each indicate any 20 MHz sub - band in each of the two 160 MHz sub - bands, and the values of the eight 20 MHz sub - bands in the 160 MHz sub - band are the same.

[0090] The above - mentioned setting method of SRP is only the setting method of some embodiments of the present disclosure, and the present disclosure is not limited thereto, and it may be set by other methods.

[0091] FIG. 7B is a schematic diagram of a spatial reuse transmission process 700B according to some other embodiments of the present disclosure.

[0092] Details of the same or similar parts of the transmission processes shown in FIGS. 7B and 7A are not described again here. Below, the differences between the two processes will mainly be described. As described above, in process 700A shown in FIG. 7A, STA1 starts spatial reuse transmission after receiving HE TB PPDU 702 and / or EHT TB PPDU 703. However, in process 700B shown in FIG. 7B, after receiving PSRR PPDU 701 that carries a trigger frame, AP2 starts spatial reuse transmission. In other words, after time point 735 in FIG. 7B, AP2 decides to perform spatial reuse transmission. This is independent of whether HE TB PPDU 702 or EHT TB PPDU 703 or both are transmitted. In other words, in the embodiment shown in FIG. 7B, AP2 completes spatial reuse transmission only using the PSRR PPDU. In some embodiments, STA1 may not need to transmit HE / EHT TB PPDU, for example, when the channel of STA1 is busy or when STA1 does not correctly receive the trigger frame.

[0093] FIG. 7C is a schematic diagram of a spatial reuse transmission process 700C according to some other embodiments of the present disclosure.

[0094] Details of the same or similar parts of the transmission processes shown in both FIGS. 7C and 7B and 7A are not described again here. In process 700C, AP2 can decide to perform spatial reuse transmission without receiving a trigger frame from AP1. As shown in FIG. 7C, AP1 transmits PSRR PPDU 740 that carries a beacon frame. AP2 can obtain the RPL when obtaining the beacon frame. Then, AP2 can perform spatial reuse transmission after receiving HE TB PPDU 745 and / or EHT PPDU 750.

[0095] FIG. 8 is a flowchart of a spatial reuse method 800 according to some embodiments of the present disclosure. The method 800 can be performed by the first spatial reuse device 602 or the second spatial reuse device 604. For ease of explanation, hereinafter, with reference to FIG. 9, the method 800 will be described from the perspective of the first spatial reuse device 602.

[0096] In block 810 of method 800, the first spatial reuse device 602 receives part or all of the PSRR PPDU transmitted by the second spatial reuse device 604 on a first frequency band.

[0097] The first frequency band is the operating frequency band of the second spatial reuse device 604. The bandwidth of the first frequency band can include 20 MHz, 40 MHz, 80 MHz, 160 MHz, 320 MHz, etc. The first frequency band includes one or more sub-bands (also referred to as sub-channels or sub-blocks) having the same bandwidth. The bandwidth of the sub-band can also include 20 MHz, 40 MHz, 80 MHz, 160 MHz, 320 MHz, etc. For example, when the first frequency band is 320 MHz and the bandwidth of the sub-band is 20 MHz, the first frequency band includes 16 sub-bands. Similarly, when the first frequency band is 320 MHz and the bandwidth of the sub-band is 40 MHz, the first frequency band includes 8 sub-bands.

[0098] In different scenarios, the first spatial reuse device 602 receives part or all of the PSRR PPDU transmitted by the second spatial reuse device 604 on the first frequency band. Hereinafter, an explanation will be provided with reference to FIG. 9.

[0099] FIG. 9 is a schematic diagram of channel division with a bandwidth of 80 / 160 / 320 MHz in the 6 GHz band according to an embodiment of the present disclosure.

[0100] As shown in FIG. 9, two 320 MHz channels 905 and 910, including a 320 MHz channel with its channel center frequency at 31 / 95 / 159 and a 320 MHz channel with its channel center frequency at 63 / 127 / 191, are designed for 802.11be to effectively use the channels and are denoted as 320-1 and 320-2. In FIG. 9, UNII represents the Unlicensed National Information Infrastructure (U-NII) radio band.

[0101] In one embodiment, the first spatial reuse device 602 is implemented as an AP and operates on channel 320-2. When the first spatial reuse device 602 receives a PSRR PPDU transmitted by the second spatial reuse device 604 on channel 320-1, the power received by the first spatial reuse device 602 is approximately half of the total bandwidth (BW) of the PSRR PPDU.

[0102] As another example, in one embodiment, the first spatial reuse device 602 is implemented as a station (STA), and the STA has only 80 MHz capabilities or operates in 80 MHz mode. When the first spatial reuse device 602, whose bandwidth is 160 MHz, receives a PSRR PPDU transmitted by the second spatial reuse device 604, the first spatial reuse device 602 can receive only one 80 MHz of the PSRR PPDU, and similarly, can receive power approximately half of the total BW of the PSRR PPDU.

[0103] When the first spatial reuse device 602 and the second spatial reuse device 604 operate in channels having different channel center frequencies, it can be seen that one spatial reuse device can receive only a part of the PSRR PPDU transmitted by the other spatial reuse device. As a result, a bandwidth mismatch occurs. In some embodiments of the present disclosure, this problem is considered when the first spatial reuse device 602 determines the transmission power of the PSRR PPDU. Details will be described below.

[0104] In some embodiments, the PSRR PPDU transmitted by the second spatial reuse device 604 can include a trigger frame (e.g., the trigger frame 205 shown in FIG. 2). For example, the first spatial reuse device 602 can receive a PSRR PPDU that includes a trigger frame and can be transmitted by the second spatial reuse device 604 to the STA 610. The trigger frame may have a format other than the format shown in FIG. 2.

[0105] As shown in box 820 of FIG. 8, the first spatial reuse device 602 determines a reference transmission power for transmitting a PSRT PPDU in the second frequency band based on the value of the SRP at the granularity of the sub-band bandwidth and the RPL of the PSRR PPDU at the granularity of the bandwidth. The second frequency band is the operating frequency band of the first spatial reuse device 602 and also includes one or more sub-bands. The bandwidth of the sub-bands of the second frequency band is the same as the bandwidth of the sub-bands of the first frequency band, and the second frequency band and the first frequency band at least partially overlap. In this way, the first spatial reuse device 602 can receive the PSRR PPDU from the second spatial reuse device 604.

[0106] In some embodiments, the first spatial reuse device 602 can obtain, from the received PSRR PPDU, the SRP included in the trigger frame specified by the second spatial reuse device 604 for each sub-band and carried by the PSRR PPDU, and calculate the value of the SRP at the granularity of the sub-band bandwidth based on the SRP. In some embodiments, a given receiver of the PSRR PPDU (e.g., STA610) can copy the UL SRP field in the trigger frame of the PSRR PPDU received from the second spatial reuse device 604 to the HE-SIG-A field in the transmitted HE TB PPDU, and / or copy the EHT UL SRP field in the received trigger frame to the U-SIG field in the transmitted EHT TB PPDU. Correspondingly, after receiving the HE TB PPDU and / or the EHT TB PPDU, the first spatial reuse device 602 can obtain the SRP for each sub-band. Then, the first spatial reuse device 602 can calculate the transmission power at which the first spatial reuse device 602 transmits the PSRT PPDU based on one or more of the UL SRP value and the EHT UL SRP value in the trigger frame, the SRP value in the HE TB PPDU, and the EHT SRP value in the U-SIG field.

[0107] In some embodiments, as described above, the value of the SRP may be in the trigger frame of the PSRR PPDU or in the HE / EHT TB PPDU transmitted by a given receiver of the PSRR PPDU (e.g., STA610). In this example, when the first spatial reuse device 602 receives the PSRR PPDU transmitted by the second spatial reuse device 604 and uses the preamble to obtain the RPL but does not obtain the trigger frame in the data field, the first spatial reuse device 602 can obtain the BW and PSR using the HE / EHT TB PPDU from the STA (e.g., STA610).

[0108] In some embodiments, the PSRR PPDU may alternatively carry a management frame (such as a beacon frame) instead of a trigger frame. In this case, the first spatial reuse device 602 can determine the RPL based on the PSRR PPDU and obtain the value of the SRP from the HE / EHT PPDU transmitted by another device (e.g., a STA communicating with the second spatial reuse device 604). For example, in addition to the HE / EHT TB PPDU, the HE / EHT PPDU can further include one or more of a HE multi-user (MU) PPDU, an EHT MU PPDU, a HE single-user (SU) PPDU, and a HE extended range (ER) SU PPDU. The PSRR PPDU and the HE / EHT PPDU may not be adjacent to each other in time series. The value of the SRP in the HE / EHT PPDU can be received from the second spatial reuse device 604. Alternatively or additionally, the value of the SRP may be an SRP value set by another device. Both the UL SRP and the EHT UL SRP represent values on a sub-band (e.g., a 20 MHz bandwidth). As described above, in the existing reuse method, the value of the SRP, the RPL, and the transmission power of the PSRT PPDU are not normalized to the same bandwidth, and thus the calculated transmission power is not sufficiently accurate. Therefore, for the accuracy of the calculation, in the embodiments of the present disclosure, the RPL is also normalized to a sub-band bandwidth, e.g., 20 MHz.

[0109] In this case, in some embodiments, the transmission power of the PSRT PPDU can be determined according to Equation 1 below.

Number

[0110] Here, TxPower PSRTrepresents the total transmission power at which the first spatial reuse device 602 transmits a PSRT PPDU, and is an example of the reference transmission power of a PSRT PPDU in the second frequency band. In this example, the reference transmission power of the PSRT PPDU is determined for the entire second frequency band. The reference transmission power of the PSRT PPDU over the entire second frequency band is determined by normalizing the entire operating frequency band to 20 MHz. In addition, BW PSRT represents the bandwidth of the PSRT PPDU (i.e., the bandwidth of the second frequency band), and PSR kth,20MHz represents the UL SRP corresponding to the k-th 20 MHz within the bandwidth range of the PSRR PPDU, for example, one or more UL SRP fields within a trigger frame, one or more SRP fields within the HE-SIG-A field of an HE PPDU, one or more EHT UL SRP fields within a trigger frame, and / or one or more EHT SRP fields within the U-SIG field of an EHT PPDU, where the PSR value is indicated by one or more of them. RPL PSRR represents the layer power of the PSRR PPDU received by the first spatial reuse device 602 within the bandwidth range of the PSRR PPDU, and BW PSRR represents the bandwidth of the PSRR PPDU (i.e., the bandwidth of the first frequency band).

[0111] From the above formula, TxPower PSRT is

Number

Number

[0112] In some embodiments, the first frequency band in which the second spatial reuse device 604 operates can include a plurality of sub-bands, and the second spatial reuse device 604 specifies a plurality of values of the SRP for these sub-bands. For example, as described above, the second spatial reuse device 604 can indicate these values of the SRP using one or more UL SRP fields in the trigger frame, one or more SRP fields in the HE-SIG-A field of the HE PPDU, one or more EHT UL SRP fields in the trigger frame, and / or one or more EHT SRP fields in the U-SIG field of the EHT PPDU. In this case, the value of the SRP at the bandwidth granularity can be the minimum value among the plurality of values of the SRP. For example, for each PSR kth,20MHz the minimum PSR within the BW range (i.e., the first frequency band) of the PSRR PPDU kth,20MHz can be used for the calculation. Optionally, for different k, different corresponding values of the SRP may be used to calculate different TxPower PSRT where k = 1..., BW PSRR / 20 MHz.

[0113] In the foregoing embodiments, TxPower PSRT and RPL PSRR are normalized using Equation (1) such that some variables of the inequality each indicate a value at 20 MHz. In this way, the accuracy of the transmission power calculation can be improved.

[0114] As described above, as shown in FIG. 9, in order to effectively use the channels, two 320 MHz channels 905 and 910 including channel 320-1 with its channel center frequency of 31 / 95 / 159 and channel 320-2 with its channel center frequency of 63 / 127 / 191 are designed for 802.11be. When the first spatial reuse device 602 operates on channel 320-2 and receives a PSRR PPDU transmitted by the second spatial reuse device 604 on channel 320-1, the power received by the first spatial reuse device 602 is approximately half of the total BW of the PSRR PPDU. As another example, when the first spatial reuse device 602 is implemented as a station (STA) and the STA has only 80 MHz capability or operates in 80 MHz mode, when the first spatial reuse device 602 receives a 160 MHz PSRR PPDU, the first spatial reuse device 602 can only receive one 80 MHz of the PSRR PPDU, and similarly, can receive power approximately half of the total BW of the PSRR PPDU. When the first spatial reuse device 602 and the second spatial reuse device 604 operate on channels with different channel center frequencies, it can be seen that one spatial reuse device can only receive a part of the PSRR PPDU transmitted by the other spatial reuse device. This results in a bandwidth mismatch.

[0115] When the width of the frequency range of the PSRR PPDU received by the first spatial reuse device 602 is not the total bandwidth of the PSRR PPDU transmitted by the second spatial reuse device 604 but a part of the bandwidth of the PSRR PPDU, the received RPL PSRR is smaller. According to Equation 2, the calculated TxPower PSRTis larger than the actually allowed value. Correspondingly, in some embodiments, the first spatial reuse device 602 is in the first frequency band so that the bandwidth mismatch is considered during the calculation of the transmission power of the PSRT PPDU, and the RPL of the PSRR PPDU can be determined based on one or more sub-bands occupied by a part or all of the received PSRR PPDU. This further improves the calculation accuracy of the transmission power.

[0116] In the following, a specific example of how the first spatial reuse device 602 determines the reference transmission power for transmitting the PSRT PPDU when the bandwidth mismatch is considered will be described. Frequency band

[0117] In some embodiments, the first spatial reuse device 602 can determine the transmission power of the PSRT PPDU according to the following formula.

Equation

[0118] Here, BW PSRR,Rx represents the frequency range of the PSRR PPDU received by the first spatial reuse device 602, and RPL PSRR,Rx represents the power of the PSRR PPDU received by the first spatial reuse device 602 within the frequency range. By comparing Equation 1 and Equation 3, it can be seen that in Equation 3, the parameter RPL PSRR in Equation 1 is replaced by the parameter RPL PSRR,Rx , and the parameter BW PSRR in Equation 1 is replaced by the parameter BW PSRR,Rx .

[0119] ​In Equation 3, in addition to the entire bandwidth of the usual PSRR PPDU, the frequency range of the PSRR PPDU received by the first spatial reuse device 602 is used as a normalization parameter. Correspondingly, in addition to the total power of the PSRR PPDU received by the first spatial reuse device 602 within the frequency range of the PSRR PPDU, the power of the PSRR PPDU received by the first spatial reuse device 602 within the frequency range is used in the calculation. This solves the problems caused by bandwidth mismatch and further improves the calculation accuracy of the transmission power.

[0120] In some embodiments, the RPL in terms of bandwidth granularity is determined based on an overlapping sub-band between a second frequency band and one or more sub-bands occupied by part or all of the PSRR PPDU received in the first frequency band by the first spatial reuse device 602. Specific examples will be described below.

[0121] In this example, BW PSRR,Rx and RPL PSRR,Rx In addition to, BW PSRR,Rx and RPL PSRR,Rx can also be used. As shown in Equation 3a below, BW <PSRR,PSRT> represents the size of the frequency range of the overlapping region between the frequency band occupied by the PSRT PPDU (i.e., the second frequency band) and the frequency band occupied by the PSRR PPDU (i.e., the first frequency band), and RPL <PSRR,PSRT> represents the power of the PSRR PPDU received in the overlapping region.

Equation

[0122] In one embodiment, the first frequency band includes a plurality of sub-bands, and these sub-bands have a plurality of values of SRP. When the calculation is performed according to Equation 3a, for each PSR kth,20MHz , the minimum PSR kth,20MHzcan be selected. Optionally, for different k, different TxPower PSRT corresponding different values of SRP may be used to calculate, where k = 1..., BW <PSRR,PSRT> / 20MHz.

[0123] The formula takes into account the case where the PSRT PPDU and the PSRR PPDU received by the first spatial reuse device 602 have different BW ranges. For example, the overlapping region is 160MHz, and the transmitted PSRT PPDU is 80MHz within the 160MHz range. In this case, BW <PSRR,PSRT> is equal to 80MHz, and RPL <PSRR,PSRT> is the power received at 80MHz of the PSRR PPDU. In this way, TxPower PSRT can be accurately calculated.

[0124] When the BW of the PSRT PPDU is larger than the frequency range of the overlapping region between the bandwidth of the PSRT PPDU and the bandwidth of the PSRR PPDU, the frequency range of the overlapping region between the bandwidth of the PSRT PPDU and the bandwidth of the PSRR PPDU is the frequency range of the PSRR PPDU received by the first spatial reuse device 602. In this case, Equation 3 is equal to Equation 3a.

[0125] In some embodiments, the first spatial reuse device 602 and / or the second spatial reuse device 604 may perform preamble puncturing when transmitting a PPDU. Preamble puncturing indicates that the preamble and data are not transmitted in a 20MHz sub-band within the bandwidth range of the PPDU, or that no energy is transmitted. However, the above formula always uses the entire bandwidth of the PPDU as the normalization parameter and does not consider preamble puncturing. For example, Equation 1 may be equivalent to the following equation.

Equation

[0126] In the case of preamble puncturing, the total bandwidth of the PSRR PPDU and / or the PSRT PPDU is larger than the equivalent bandwidth with power transmission, which may cause an inaccurate increase in TxPower PSRT The punctured part of the preamble is assumed to occupy up to 50% of the total bandwidth of the PPDU. When the total bandwidth of the PPDU is used in addition to the equivalent bandwidth with power transmission, the right side of the inequality is up to 3 + 3 = 6 dB larger than the actual situation. The calculated TxPower PSRT is up to 6 dB larger than the actually allowable value. The BW of the PPDU is twice the equivalent bandwidth, i.e.,

Number

[0127] Correspondingly, in one embodiment, the first spatial reuse device 602 or the second spatial reuse device 604 or both perform preamble puncturing on the PSRR PPDU and / or the PSRT PPDU. In order to further improve the calculation accuracy of the transmission power, the RPL of the PSRR PPDU at the granularity of the sub-band bandwidth can be determined based on the non-punctured sub-bands of the first frequency band or the second frequency band.

[0128] In some embodiments, the transmission power of the PSRT PPDU can be calculated considering both the overlap and puncturing of the first frequency band and the second frequency band. For example, the RPL at the granularity of the sub-band bandwidth is in the first frequency band and is the bandwidth of the non-punctured sub-bands in one or more sub-bands occupied by a part or all of the PSRR PPDU received by the first spatial reuse device 602, or the second frequency band and the first frequency band, and is determined based on one of the bandwidths of the non-punctured sub-bands in the overlapping sub-bands between the first frequency band and one or more sub-bands occupied by a part or all of the PSRR PPDU received by the first spatial reuse device 602.

[0129] Optionally or additionally, in some embodiments, the reference transmission power of the PSRT PPDU may be determined based on the bandwidth of the non-punctured sub-bands in the second frequency band, or the bandwidth of the non-punctured sub-bands in the overlapping sub-bands between the second frequency band and one or more sub-bands occupied by a part or all of the PSRR PPDU received in the first frequency band and received by the first spatial reuse device 602.

[0130] Hereinafter, a specific example of determining the reference transmission power of the PSRT PPDU considering both the overlap and puncturing of the first frequency band and the second frequency band will be described.

[0131] In some embodiments, Equation 3 may be further improved as follows.

Equation

[0132] Here, BW PSRT,non-punc represents the equivalent bandwidth other than the punctured portion, and BW PSRR,Rx,non-punc represents the equivalent bandwidth other than the punctured portion within the frequency range of the received PSRR PPDU. Since there is no energy transmitted in the punctured portion, RPL PSRR,Rx is equal to RPL PSRR,Rx,non-punc .

[0133] Similar to some of the above-described embodiments, the frequency range of the received PSRR PPDU may also be replaced with the overlapping region of the frequency bands occupied by the PSRT PPDU and the PSRR PPDU. BW <PSRR,PSRT>,non-punc is the equivalent bandwidth other than the punctured portion within the overlapping region between the bandwidth of the PSRT PPDU and the bandwidth of the PSRR PPDU. After considering puncturing, Equation 3a may be expressed as follows.

Equation

[0134] Similarly, RPL <PSRR,PSRT> and RPL <PSRR,PSRT>,non-punc are the same as each other.

[0135] Since the PSRT PPDU is to be transmitted by the first spatial reuse device 602, the first spatial reuse device 602 knows the puncturing state or the estimated puncturing state of the PSRT PPDU. Regarding the puncturing state of the PSRR PPDU, in some embodiments, the first spatial reuse device 602 is the puncturing indication information included in the preamble in the received PSRR PPDU; the puncturing indication information included in the PSRR PPDU, where the PSRR PPDU is a non-high throughput replicated PPDU; or the puncturing indication information included in the management frame of the basic service set BSS where the second spatial reuse device 604 is located, and the management frame includes at least one of a beacon frame, an association response frame, a probe response frame, a neighbor report frame, or a reduced neighbor report frame, and the non-puncturing subband of the first frequency band can be determined based on at least one of the puncturing indication information.

[0136] In some embodiments, the first spatial reuse device 602 can clearly know the puncturing state of the PSRR PPDU using signaling instructions. For example, in some embodiments, the first spatial reuse device 602 can determine the non-punctured subbands of the first frequency band based on the puncturing instruction information included in the preamble of the received PSRR PPDU. For example, the PSRR PPDU is an EHT multi-user (MU) PPDU for OFDMA transmission. The puncturing information of the PSRR PPDU is located within the resource unit allocation subfield of the EHT-SIG field. The resource unit allocation subfield corresponding to the punctured 20 MHz indicates 26. In other words, in the punctured 242-tone resource unit, one 20 MHz corresponds to one 242-tone RU. For example, the PSRR PPDU is an EHT MU PPDU for non-OFDMA transmission. The puncturing information of the PSRR PPDU is located within the punctured channel information subfield of the U-SIG field.

[0137] In addition to the EHT MU PPDU, the PSRR PPDU may also be further implemented as an HE PPDU, including an HE MU PPDU, an HE SU PPDU, or an HE ERSU PPDU, and a non-high throughput duplicate PPDU.

[0138] As yet another example, the PSRR PPDU is a HE MU PPDU. The puncturing information of the PSRR PPDU is located within the bandwidth (BW) subfield. When the bandwidth subfield indicates 0, 1, 2, or 3, there is no puncturing and the PPDU BW can be directly used for calculation. When the bandwidth subfield indicates 4 or 5, the total bandwidth is 80 MHz and one 20 MHz subband is punctured (the PPDU BW is 80 MHz and the equivalent bandwidth is 60 MHz). When the bandwidth subfield indicates 6, the total bandwidth is 160 MHz, one 20 MHz subband of the primary 80 MHz channel is punctured, and zero to two 20 MHz subbands of the secondary 80 MHz channel are punctured. However, the specific numbers are unknown. In this case, BW PSRT,non-punc or BW <PSRR,PSRT>,non-punc is the primary 80 MHz channel, the first spatial reuse device 602 can clearly know the puncturing state. Alternatively, when the bandwidth subfield indicates 7, the total bandwidth is 160 MHz, at least one 20 MHz subband is punctured, zero, one, or two 20 MHz subbands of the primary 80 MHz channel are punctured, and zero, one, or two 20 MHz subbands of the secondary 80 MHz channel are punctured.

[0139] In some embodiments, when the PSRR PPDU is a non-high throughput (non-HT) duplicate PPDU, the PSRR PPDU can carry bandwidth and puncturing information. Specifically, the information may be located within the service field. Correspondingly, the first spatial reuse device 602 can determine the non-punctured subbands of the first frequency band based on the puncturing indication information included in the PSRR PPDU.

[0140] In some other embodiments, the first spatial reuse device 602 can determine a non - punctured sub - band of the first frequency band based on the puncturing indication information included in the management frame of the BSS where the second spatial reuse device 604 is located. For example, static puncturing information where a 20 MHz sub - band is punctured can be carried in management frames such as beacon frames, association response frames, probe response frames, neighbor report frames, or reduced neighbor report frames.

[0141] In the foregoing case, the first spatial reuse device 602 can clearly know the puncturing state of the PSRR PPDU using signaling indication.

[0142] In some embodiments, the puncturing state of the PSRR PPDU can alternatively be determined through blind detection by the first spatial reuse device 602. For example, the first spatial reuse device 602 can detect whether a non - HT preamble of the PSRR PPDU exists in each 20 MHz.

[0143] In some embodiments, regarding the preamble puncturing problem, the first spatial reuse device 602 adjusts the reference transmission power based on a predetermined offset. This simplifies the processing of the first spatial reuse device 602 and further improves the computational efficiency. In some embodiments, the predetermined offset can be set to 3 dB. As described above, when the maximum allowable puncturing ratio is 50%, the puncturing of the PSRT PPDU and the puncturing of the PSRR PPDU each cause an inaccurate increase of up to 3 dB separately. Therefore, during the calculation of TxPower PSRT the offsets of 3 dB or 6 dB are directly subtracted. This can avoid the inaccurate increase caused by the puncturing of the PSRT PPDU and / or the PSRR PPDU.

[0144] In some embodiments, when calculating the reference transmission power of the PSRT PPDU (e.g., TxPower PSRT ), the first spatial reuse device 602 can adjust the transmission power calculation deviation caused by the puncturing of the PSRR PPDU based on an offset. For example, the first spatial reuse device 602 can further subtract an offset, e.g., 3 dB, from the TxPower PSRT calculated according to Equation 1 / 2 / 3 / 3a. Certainly, the first spatial reuse device 602 can perform the adjustment based on the equivalent bandwidth when it knows the puncturing state of the PSRR PPDU, and can perform the adjustment based on the offset when it does not know the puncturing state of the PSRR PPDU. In some embodiments, when it is known that the PSRR PPDU is not punctured, the first spatial reuse device 602 may not perform the adjustment. In some embodiments, the first spatial reuse device 602 may always perform the adjustment.

[0145] In some embodiments, the second spatial reuse device 604 can perform an adjustment based on an offset when setting the UL SRP / EHT UL SRP value to compensate for the transmission power calculation deviation caused by the puncturing of the PSRR PPDU. For example, when preamble puncturing is used for the PSRR PPDU, an offset, e.g., 3 dB, is further subtracted from the initially set PSR value. When the PSRR PPDU is not punctured, the second spatial reuse device 604 may not further subtract the offset. In this way, when the first spatial reuse device 602 is a conventional device, backward compatibility can be achieved. In addition, the operation of the first spatial reuse device 602 may be simplified, and the first spatial reuse device 602 does not need to consider the adjustment of the offset. Certainly, for simplicity, in some embodiments, the second spatial reuse device 604 may always subtract an offset, e.g., 3 dB.

[0146] In some embodiments, the first spatial reuse device 602 can perform the above adjustments if the standard specifies that the second spatial reuse device 604 does not perform the adjustments, or if the second spatial reuse device 604 is a conventional device based on 802.11ax. Otherwise, the second spatial reuse device 604 performs adjustments to compensate for the transmission power calculation deviation caused by the puncturing of the PSRR PPDU.

[0147] Regarding the transmission power calculation deviation caused by the puncturing of the PSRT PPDU, in some embodiments, the second spatial reuse device 604 can adjust the offset when setting the value of the SRP. For example, an offset, such as 3 dB, is further subtracted from the initially set PSR value to adjust for the transmission power calculation deviation caused by the puncturing of the PSRT PPDU, such as 3 dB.

[0148] In some embodiments, the first spatial reuse device 602 can alternatively adjust the offset during the calculation of TxPower PSRT Note that since the first spatial reuse device 602 knows the puncturing state of the PSRT PPDU, the first spatial reuse device 602 can directly solve the problem based on the puncturing state (using the solution of the left side of Equation 4 or 4a). However, to simplify the calculation process, 3 dB can be directly subtracted from the calculated TxPower PSRT (Equations 1 / 2 / 3 / 3a).

[0149] In some embodiments, when the effects of the puncturing of the PSRT PPDU and the puncturing of the PSRR PPDU are considered simultaneously, the first spatial reuse device 602 and the second spatial reuse device 604 can perform corresponding offset adjustments separately. For example, the first spatial reuse device 602 can adjust the TxPower PSRTDuring the calculation of, a 3 dB offset can be subtracted, and the second spatial reuse device 604 can subtract a 3 dB offset when setting the value of the SRP. In some embodiments, 6 dB may alternatively be subtracted by one device.

[0150] When calculating the reference transmit power of the PSRT PPDU in the second frequency band, in addition to the above description that the entire operating frequency band is normalized to the sub-band bandwidth (e.g., 20 MHz) for the reference transmit power of the entire second frequency band, in some embodiments, the reference transmit power of the PSRT PPDU may alternatively be determined for each sub-band. For example, the first spatial reuse device 602 can determine the reference transmit power for transmitting the PSRT PPDU in a sub-band based on the value of the SRP specified by the second spatial reuse device 604 for a sub-band of the first frequency band (this sub-band is also included in the second frequency band), and the RPL of the PSRR PPDU of the sub-band.

[0151] Specific examples will be described below.

[0152] Specifically, in this example, a method for calculating the transmit power of the PSRT PPDU for each 20 MHz sub-band bandwidth is provided. The following formula is used. TxPower PSRT,kth,20MHz ≦PSR kth,20MHz -RPL PSRR,kth,20MHz (Equation 6)

[0153] Here, the range of k is BW <PSRR,PSRT>,non-punc That is, when there is preamble puncturing in the PSRR PPDU, the transmit power of the PSRT PPDU can be determined for the non-punctured sub-bands of the first frequency band according to Equation 6. In this example, when receiving the PSRR PPDU, the first spatial reuse device 602 needs to detect the power at each 20 MHz and calculate TxPower PSRT,kth,20MHz at a granularity of 20 MHz.

[0154] In the case of bandwidth mismatch, for example, when a PSRR PPDU is not received at 160 MHz due to the 320 MHz channels 320-1 and 320-2 shown in FIG. 9, or when the bandwidth of the PSRR PPDU is smaller than the bandwidth of the PSRT PPDU, or when there is preamble puncturing in the PSRR PPDU, the TxPower on the 20 MHz subband or subchannel where the PSRR PPDU is not received PSRT,jth,20MHz can use the following rule, where j indicates the 20 MHz channel index where the PSRR PPDU is not received, and BW <PSRR,PSRT>,punc can be located at.

[0155] In some embodiments, there may be no power limit for PSR-based spatial reuse in the 20 MHz subband or subchannel where the PSRR PPDU is not received (i.e., the punctured subband). In this embodiment, the first spatial reuse device 602 can determine that the reference transmit power in the punctured subband is less than a predetermined maximum transmit power. The maximum transmit power may be predefined in the system, specification, or regulation. Since the PSRR PPDU is not transmitted in the subband, the HE / EHT TB PPDU triggered by the PSRR PPDU is also not transmitted in the 20 MHz subband. Therefore, the PSRT PPDU on the corresponding 20 MHz subband does not cause interference to the reception of the HE / EHT TB PPDU by the second spatial reuse device 604. However, the limitations on transmit power due to standards or regulations still exist. Therefore, the power for PSR-based spatial reuse is still limited by regulations.

[0156] In some embodiments, PSR-based spatial reuse is not permitted in 20 MHz sub-bands where PSRR PPDUs are not received. Correspondingly, the first spatial reuse device 602 may determine not to permit the transmission of PSRT PPDUs in the punctured sub-bands. This is equivalent to the fact that PSRT PPDUs also need to be punctured on the 20 MHz sub-bands punctured for PSRR PPDUs. The PSRR PPDUs transmitted by the second spatial reuse device 604 are punctured because transmissions in these 20 MHz sub-bands are being made for other users, incumbent users (which may be understood as permitted users), or radar signals. For security reasons, PSR-based spatial reuse is not performed.

[0157] In some other embodiments, the first spatial reuse device 602 determines the reference transmission power in the punctured sub-bands as the average power of a plurality of reference transmission powers determined for a plurality of non-punctured sub-bands. For example, the minimum TxPower obtained through the calculation according to Equation 6 PSRT,kth,20MHz , or the TxPower <PSRR,PSRT>,non-punc located at BW PSRT,kth,20MHz can be used for transmission. This method can be regarded as a trade-off between the above two methods where the transmission power is not limited and spatial reuse is not permitted. The SRP on the non-punctured 20 MHz sub-bands where PSRR PPDUs are received is used to determine the TxPower PSRT,jth,20MHz of the 20 MHz sub-bands where PSRR PPDUs are not received (due to puncturing or bandwidth mismatch).

[0158] For example, further deductions can be made to sum all 20 MHz parameters at BW <PSRR,PSRT>,non-punc based on Equation 6.

Number

[0159] Here,

Number

[0160] Equation 7 is equivalent to Equation 8 or Equation 8a.

Number

Number

[0161] When the first spatial reuse device 602 transmits a PSRT PPDU, one way is that Equation 8 / 8a is satisfied, and each 20 MHz does not need to satisfy Equation 6.

[0162] BW <PSRR,PSRT>,non-punc If there are N non-punctured 20 MHz channels in BW <PSRR,PSRT>,non-punc the average value of TxPower PSRT,kth,20MHz in BW

Number

[0163] In some of the above embodiments, a method for calculating TxPower PSRT,kth,20MHz for each 20 MHz is provided. In this way, the granularity for calculating the transmission power of the PSRT PPDU can be directly normalized to the sub-band bandwidth. This improves the calculation accuracy.

[0164] In some of the above embodiments, how to accurately calculate the transmission power has been described. However, the embodiments of the present disclosure are not limited thereto. The calculation process may alternatively be avoided using the UL SRP field. This simplifies the operation and improves the calculation efficiency. For example, in some embodiments, the first spatial reuse device 602 may determine the reference transmission power of the PSRT PPDU in the puncture sub-band based on the value of the SRP on the puncture sub-band.

[0165] Referring to FIG. 11, hereinafter, when there is a preamble puncturing in the PSRR PPDU, how the second spatial reuse device 604 sets the UL SRP field will be described so as to show how the first spatial reuse device 602 or other spatial reuse devices perform spatial reuse transmission in the puncture sub-band.

[0166] FIG. 10 is a flowchart of a spatial reuse method 1000 according to some other embodiments of the present disclosure. The method 1000 may be performed by the second spatial reuse device 604.

[0167] In box 1010 of method 1000, the second spatial reuse device 604 adjusts the value of the spatial reuse parameter (SRP) based on a predetermined offset for the puncture scheduled sub-band in the first frequency band for transmitting a physical layer protocol data unit (PPDU) (e.g., PSRR PPDU), and sets the value of the SRP to a first value to indicate to other spatial reuse devices that the transmission of the PPDU in the puncture scheduled sub-band is prohibited, or sets the value of the SRP to a second value to indicate to other spatial reuse devices that the transmission in the puncture scheduled sub-band is permitted, and determines the corresponding value of the SRP through one of these operations.

[0168] As described above, in some embodiments, the value of the SRP is adjusted based on a predetermined offset so that the first spatial reuse device 602 can appropriately adjust the transmission power of the PSRT PPDU to compensate for the transmission power calculation deviation caused by the puncturing of the PSRR PPDU.

[0169] In some embodiments, if the second spatial reuse device 604 anticipates that the first spatial reuse device 602 will not perform PSR-based spatial reuse in a 20 MHz sub-band or sub-channel where the PSRR PPDU is not received, the UL SRP value of the UL SRP field corresponding to the 20 MHz sub-channel and / or the EHT UL SRP field can be set to a specific value, e.g., 0 or 15 (as shown in the following table 2 ).

[0170] In some embodiments, if there is preamble puncturing in the PSRR PPDU, for the sake of simplifying the implementation, the UL SRP values of all UL SRP fields and / or EHT UL SRP fields can be set to a specific value, e.g., 0 or 15. For example, when the UL SRP values of all UL SRP fields and / or EHT UL SRP fields are set to 0 or 15 , other spatial reuse devices (e.g., the first spatial reuse device 602) can be instructed to prohibit transmission in the sub-bands where puncturing needs to be performed for the PPDU.

[0171] In this way, the first spatial reuse device 602 does not need to perform power correction for the preamble puncturing of the PSRR PPDU, and thus the power calculation / adjustment method in the above embodiments does not need to be used.

[0172] The following table 2 shows exemplary settings of the UL SRP values.

[0173]

Table 2

[0174] In some embodiments, when the second spatial reuse device 604 does not restrict the PSR-based spatial reuse performed by the first spatial reuse device 602 in a 20 MHz sub-band where the PSRR PPDU is not received, the UL SRP value may be set to a value other than 0 or 15, for example, it may be set to a PSR value of 14. As shown in the table 2 This indicates the maximum PSR value that is allowed.

[0175] In box 1020, the second spatial reuse device 604 transmits a punctured PPDU in a non-punctured sub-band of the first frequency band, and the trigger frame carried in the PPDU includes the determined value of the SRP.

[0176] One embodiment of the present disclosure further provides a corresponding apparatus for implementing the above method or process.

[0177] FIG. 11 is a schematic diagram of an apparatus according to some embodiments of the present disclosure.

[0178] As shown in FIG. 11, apparatus 1100 includes a receiving module 1105 and a first determination module 1110. The receiving module 1105 is configured to receive, by a first spatial reuse device 602, part or all of a PSRR PPDU transmitted by a second spatial reuse device 604 in a first frequency band. The first frequency band includes one or more sub-bands having the same bandwidth. The first determination module 1110 is configured to determine, based on a value of a spatial reuse parameter (SRP) at the granularity of the bandwidth and a received power level (RPL) of the PSRR PPDU at the granularity of the bandwidth, a reference transmission power for transmitting a PSRT PPDU by the first spatial reuse device 602 in a second frequency band. The RPL of the PSRR PPDU at the granularity of the bandwidth is in the first frequency band and is determined based on one or more sub-bands occupied by part or all of the received PSRR PPDU, or one or more of the non-punctured sub-bands of the first frequency band or the second frequency band.

[0179] In some embodiments, the reference transmission power is determined for the entire second frequency band.

[0180] In some embodiments, the RPL at the granularity of the bandwidth is determined based on an overlapping sub-band between the second frequency band and one or more sub-bands in the first frequency band occupied by part or all of the received PSRR PPDU.

[0181] In some embodiments, the RPL at the granularity of the bandwidth is determined based on the bandwidth of a non-punctured sub-band in one or more sub-bands in the first frequency band occupied by part or all of the received PSRR PPDU, or the bandwidth of a non-punctured sub-band in an overlapping sub-band between the second frequency band and one or more sub-bands in the first frequency band occupied by part or all of the received PSRR PPDU.

[0182] In some embodiments, the reference transmission power is determined based on one of the bandwidths of the non-punctured sub-bands in the second frequency band, or the bandwidth of the non-punctured sub-bands in the overlapping sub-bands between the second frequency band and one or more sub-bands in the first frequency band that are occupied by a part or all of the received PSRR PPDU.

[0183] In some embodiments, device 1100 further includes a second determination module. The second determination module is configured to determine the non-punctured sub-bands of the first frequency band based on at least one of the following: puncturing indication information included in the preamble within the received PSRR PPDU; puncturing indication information included in the PSRR PPDU, where the PSRR PPDU is a non-high-throughput replicated PPDU; or puncturing indication information included in the management frame of the basic service set BSS where the second spatial reuse device 604 is located, and the management frame includes at least one of a beacon frame, an association response frame, a probe response frame, a neighbor report frame, or a reduced neighbor report frame.

[0184] In some embodiments, device 1100 further includes a third determination module configured to determine to puncture the PSRT PPDU by the first spatial reuse device 602. Device 1100 further includes an adjustment module configured to adjust the reference transmission power based on a predetermined offset by the first spatial reuse device 602.

[0185] In some embodiments, the value of the SRP at the bandwidth granularity is adjusted by the second spatial reuse device 604 for the punctured PSRR PPDU based on a predetermined offset.

[0186] In some embodiments, the first frequency band includes a plurality of sub-bands. The value of the SRP in terms of the bandwidth granularity is the minimum value among the plurality of values of the SRP for the plurality of sub-bands.

[0187] In some embodiments, the first determination module 1110 is configured to determine, based on the value of the SRP for one sub-band of the first frequency band and the RPL of the PSRR PPDU of the sub-band, the reference transmission power for transmitting the PSRT PPDU in the sub-band by the first spatial reuse device 602. The sub-band of the first frequency band is included in the second frequency band.

[0188] In some embodiments, the first determination module 1110 is configured to determine, for the puncture sub-band in the overlapping sub-bands between the second frequency band and the first frequency band, whether to permit the first spatial reuse device 602 to transmit the PSRT PPDU in the puncture sub-band, or to determine that the reference transmission power in the puncture sub-band by the first spatial reuse device 602 is less than a predetermined maximum transmission power.

[0189] In some embodiments, the first determination module 1110 is configured to determine, for the puncture sub-band in the overlapping sub-bands between the second frequency band and the first frequency band, the reference transmission power in the puncture sub-band based on one or more reference transmission powers determined for one or more non-puncture sub-bands in the overlapping sub-bands between the second frequency band and the first frequency band.

[0190] In some embodiments, the first determination module 1110 is configured to determine the reference transmission power in the puncture sub-band for the overlapping sub-bands between the second frequency band and the first frequency band based on one or more reference transmission powers determined by the first spatial reuse device 602 for one or more non-puncture sub-bands in the overlapping sub-bands between the second frequency band and the first frequency band.

[0191] In some embodiments, the first determination module 1110 is configured to determine the reference transmission power in the puncture sub-band by the first spatial reuse device 602 as the minimum reference transmission power among the plurality of reference transmission powers determined for the plurality of non-puncture sub-bands, or as the average power of the plurality of reference transmission powers.

[0192] In some embodiments, the first determination module 1110 is configured to determine the reference transmission power in the puncture sub-band for the overlapping sub-bands between the second frequency band and the first frequency band based on the value of the SRP for the puncture sub-band by the first spatial reuse device 602.

[0193] FIG. 12 is a schematic diagram of an apparatus according to some other embodiments of the present disclosure.

[0194] As shown in FIG. 12, the apparatus 1200 includes a fourth determination module 1205 and a transmission module 1210. The fourth determination module 1205 is used to transmit a physical layer protocol data unit (PPDU), and for a puncture-scheduled sub-band in a first frequency band including a plurality of sub-bands having the same bandwidth, an operation of adjusting a value of a spatial reuse parameter SRP based on a predetermined offset, and an operation of setting the value of SRP to a first value to indicate to other spatial reuse devices that the transmission of the PPDU in the puncture-scheduled sub-band is prohibited, or an operation of setting the value of SRP to a second value to indicate to other spatial reuse devices that the transmission in the puncture-scheduled sub-band is permitted. The transmission module 1210 is configured to transmit a punctured PPDU in a non-punctured sub-band of the first frequency band, and a trigger frame carried in the PPDU includes the determined value of SRP.

[0195] It should be understood that the spatial reuse method described above with reference to FIGS. 6 to 10 is also applicable to apparatuses 1100 and 1200 and has the same effect. Details are not described again here. Any suitable spatial reuse technology known currently and developed in the future can be used here. The scope of the present disclosure is not limited to this aspect.

[0196] The modules included in apparatuses 1100 and 1200 can be implemented in various ways, including software, hardware, firmware, or any combination thereof. In some embodiments, one or more modules can be implemented using software and / or firmware, e.g., machine-executable instructions stored in a storage medium. In addition to or instead of the machine-executable instructions, some or all of the modules within apparatuses 1100 and 1200 may be implemented, at least in part, using one or more hardware logic components. By way of non-limiting example, available exemplary hardware logic components include field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), system on chips (SOCs), and complex programmable logic devices (CPLDs).

[0197] FIG. 13 is a block diagram of a device 1300 for implementing some embodiments of the present disclosure. Device 1300 can be configured to implement the method procedures of FIGS. 8 and 10.

[0198] As shown in FIG. 13, device 1300 includes a processor 1310. Processor 1310 controls the operation and functions of device 1300. For example, in some exemplary embodiments, processor 1310 can perform various operations using instructions 1330 stored in a memory 1320 coupled to processor 1310. Memory 1320 can be of any suitable type applicable to the local technical environment and can be implemented using any suitable data storage technology, including but not limited to semiconductor-based storage devices, magnetic storage devices and systems, and optical storage devices and systems. Although only one memory unit is shown in FIG. 13, device 1300 may have multiple physically different memory units.

[0199] Processor 1310 can be of any suitable type suitable for the local technical environment, and can include, but is not limited to, one or more of a general-purpose computer, a dedicated computer, a microcontroller, a digital signal processor (DSP), and a controller-based multi-core controller architecture. Device 1300 can also include multiple processors 1310. Processor 1310 is coupled to communication unit 1340. Communication unit 1340 can receive and transmit information using wireless signals or through optical fibers, cables, and / or other components.

[0200] All features described above with reference to FIGS. 6 through 12 are applicable to device 1300. Details are not repeated here.

[0201] In this embodiment of the present disclosure, interference occurring in the reception of a spatial reuse device when the calculated transmission power of a PSRT PPDU is excessively large due to bandwidth mismatch and preamble puncturing is resolved and corrected. Thereby, interference to the reception of the spatial reuse device is reduced and system efficiency is improved.

[0202] Generally, various exemplary embodiments of the present disclosure can be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. Some aspects can be implemented in hardware, while other aspects can be implemented in firmware or software executable by a controller, a microprocessor, or other computing device. It should be understood that when aspects of the exemplary embodiments of the present disclosure are illustrated or described as block diagrams, flowcharts, or using specific other diagrams, the blocks, devices, systems, techniques, or methods described herein can be implemented as non-limiting examples in hardware, software, firmware, dedicated circuitry or logic, general-purpose hardware or controllers, or other computing devices, or some combination thereof.

[0203] For example, exemplary embodiments of the present disclosure may be described in the context of machine-executable or computer-executable instructions. Machine-executable instructions are, for example, program modules that are executed in a device included in a target physical or virtual processor. In general, program modules include routines, programs, libraries, objects, classes, components, data structures, etc., and perform specific tasks or implement specific abstract data structures. In various exemplary embodiments, the functions of the program modules may be combined or divided among the described program modules. Machine-executable instructions for the program modules may be executed locally or within distributed devices. In distributed devices, the program modules may be located on both local and remote storage media.

[0204] The computer program code used to implement the methods disclosed in the present disclosure may be written in one or more programming languages. The computer program code may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device so that, when the program code is executed by the computer or another programmable data processing device, the functions / operations specified in the flowchart and / or block diagram are implemented. The program code may be executed entirely on the computer, partially on the computer, as an independent software package, partially on the computer and partially on a remote computer, or entirely on a remote computer or server.

[0205] In the context of the present disclosure, a machine-readable medium or computer-readable medium can be any tangible medium that includes, stores, or has associated with it a program for an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium can include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination thereof. More detailed examples of the machine-readable storage medium include electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0206] In addition, although operations are presented in a particular order, it should not be understood that such operations are required to be completed in the particular order shown or that all operations illustrated are required to obtain the desired result. In some cases, multitasking or parallel processing may be advantageous. Similarly, the above description includes details of some particular implementations, but this is not intended to limit any invention or the scope of the claims, but rather should be construed as an explanation of particular exemplary embodiments that may be specific to a particular invention. Some features described herein in the context of separate exemplary embodiments may alternatively be integrated in a single exemplary embodiment. Conversely, various features described in the context of a single exemplary embodiment may alternatively be implemented separately in multiple exemplary embodiments or in any suitable sub-combination.

[0207] The subject matter has been described in language specific to structural features and / or methodological acts, but it is understood that the subject matter defined in the appended claims is not limited to the specific features or acts described above. Rather, the specific features or acts described above are disclosed as exemplary forms of implementing the claims.

Description of Symbols

[0208] 105 Basic Service Set (BSS) 110 BSS 115 Access Point (AP) 120 Station (STA) 125 STA 130 AP 135 STA 205 Trigger Frame 210 High-Efficiency Trigger-Based Physical Layer Protocol Data Unit (HE TB PPDU) 215 Confirmation Response Frame 220 High-Efficiency Signal Field A (HE-SIG-A) Field 305 Common Information Field 310 User Information List Field 315 User Information Field 405 Uplink Spatial Reuse Subfield 410 Association Identifier 12 (AID12) Subfield 415 Resource Unit Allocation Subfield 420 Uplink Bandwidth (UL BW) Field 505 Parameterized Spatial Reuse Reception (PSRR) PPDU 510 PSRT PPDU 602 First Spatial Reuse Device 604 Second Spatial Reuse Device 606 STA 608 STA 610 STA 612 BSS 614 BSS 701 PSRT PPDU 702 HE TB PPDU 703 EHT TB PPDU 705 Common Information Field 710 Uplink Parameterized Spatial Reuse (UL PSR) Field 715 User Information List Field 720 Association Identifier 12 (AID 12) Field 725 UL SRP Field 730 UL SRP Field 740 PSRR PPDU 745 HE TB PPDU 750 Extremely High Throughput (EHT) PPDU 800 Spatial Reuse Method 905 320MHz Channel 910 320MHz Channel 1000 Spatial Reuse Method 1100 Device 1105 Receiver Module 1110 First Decision Module 1200 Device 1205 Fourth Decision Module 1210 Transmitter Module 1300 Device 1310 Processor 1320 Memory 1330 Instruction 1340 Communication Unit

Claims

1. Receiving, by a first spatial reuse device, part or all of a parameterized spatial reuse reception (PSRR) physical layer protocol data unit (PPDU) transmitted by a second spatial reuse device on a first frequency band, wherein the first frequency band includes one or more sub-bands having the same bandwidth; and Determining, by the first spatial reuse device, a reference transmission power for transmitting a parameterized spatial reuse transmission (PSRT) PPDU on a second frequency band based on a value of a spatial reuse parameter (SRP) at a granularity of the bandwidth and a received power level (RPL) of the PSRR PPDU at the granularity of the bandwidth comprising wherein the second frequency band includes one or more sub-bands having the bandwidth, and the second frequency band and the first frequency band are at least partially overlapping in an overlapping sub-band between the second frequency band and the one or more sub-bands occupied by the part or all of the PSRR PPDU received by the first spatial reuse device in the first frequency band, a spatial reuse method.

2. Receiving, by a communication device from a first spatial reuse device, a parameterized spatial reuse transmission (PSRT) physical layer protocol data unit (PPDU) on a second frequency band, wherein the second frequency band includes one or more sub-bands having the same bandwidth, the reference transmission power of the PSRT PPDU is determined based on a value of a spatial reuse parameter (SRP) at a granularity of the bandwidth and a received power level (RPL) of a parameterized spatial reuse reception (PSRR) PPDU at the granularity of the bandwidth, part or all of the PSRR PDDU is received by the first spatial reuse device on a first frequency band, the first frequency band includes one or more sub-bands having the bandwidth, and the second frequency band and the first frequency band are at least partially overlapping in an overlapping sub-band between the second frequency band and the one or more sub-bands occupied by the part or all of the PSRR PPDU received by the first spatial reuse device in the first frequency band comprising a step

3. The method according to claim 1 or 2, wherein the RPL at the granularity of the bandwidth is determined based on the overlapping sub-bands.

4. The RPL at the granularity of the bandwidth is in the first frequency band, the bandwidth of the non-punctured sub-bands in the one or more sub-bands occupied by a part or all of the PSRR PPDU received by the first spatial reuse device, or determined based on one of the bandwidths of the non-punctured sub-bands in the overlapping sub-bands, the method according to claim 1 or 2.

5. The method according to claim 1 or 2, wherein the reference transmission power is further determined based on the bandwidth of the non-punctured sub-bands in the second frequency band.

6. The method according to claim 1 or 2, wherein the reference transmission power is further determined based on the bandwidth of the non-punctured sub-bands in the overlapping sub-bands between the second frequency band and the one or more sub-bands in the first frequency band occupied by a part or all of the PSRR PPDU received by the first spatial reuse device.

7. by the first spatial reuse device, the puncturing indication information included in the preamble in the received PSRR PPDU, the puncturing indication information included in the PSRR PPDU, wherein the PSRR PPDU is a non-high-throughput replicated PPDU, or the puncturing indication information included in the management frame of the basic service set (BSS) where the second spatial reuse device is located, the management frame including at least one of a beacon frame, an association response frame, a probe response frame, a neighbor report frame, or a reduced neighbor report frame, the step of determining the non-punctured sub-bands of the first frequency band based on at least one of the puncturing indication information The method according to claim 1, further comprising.

8. The first spatial reuse device determines to puncture the PSRT PPDU, and the spatial reuse method The method according to claim 1, further comprising the step of adjusting the reference transmission power by the first spatial reuse device based on an offset.

9. The method according to claim 1 or 2, wherein the first frequency band includes a plurality of sub-bands, and the value of the SRP at the granularity of the bandwidth is the minimum value among the plurality of values of the SRP for the plurality of sub-bands.

10. Transmitting, by a second spatial reuse device, in a first frequency band, part or all of a parameterized spatial reuse reception (PSRR) physical layer protocol data unit (PPDU), wherein the first frequency band includes one or more sub-bands having the same bandwidth, and a trigger frame carried in the PSRR PPDU includes a value of a spatial reuse parameter (SRP) at the granularity of the bandwidth; For a puncture-scheduled sub-band in the first frequency band, by the second spatial reuse device, Adjusting the value of the spatial reuse parameter (SRP) based on a predetermined offset, and Setting the value of the SRP to a first value to indicate to other spatial reuse devices that transmission of the PPDU in the puncture-scheduled sub-band is prohibited, or Determining the SRP through one of setting the value of the SRP to a second value to indicate to other spatial reuse devices that transmission in the puncture-scheduled sub-band is permitted; A method comprising.

11. A communication device, A receiving module configured to receive part or all of a parameterized spatial reuse reception (PSRR) physical layer protocol data unit (PPDU) transmitted by a second spatial reuse device on a first frequency band, wherein the first frequency band includes one or more sub-bands having the same bandwidth; A first determination module configured to determine a reference transmission power for transmitting a parameterized spatial reuse transmission (PSRT) PPDU in a second frequency band based on a value of a spatial reuse parameter (SRP) at the granularity of the bandwidth and a received power level (RPL) of the PSRR PPDU at the granularity of the bandwidth; Comprising. The second frequency band includes one or more sub-bands having the bandwidth, and the second frequency band and the first frequency band are in the second frequency band and the first frequency band, and at least partially overlap in an overlapping sub-band between the one or more sub-bands occupied by the part or all of the PSRR PPDU received by the communication device.

12. A receiving module configured to receive a parameterized spatial reuse transmission (PSRT) physical layer protocol data unit (PPDU) in a second frequency band from a first spatial reuse device, wherein the second frequency band includes one or more sub-bands having the same bandwidth, and the reference transmission power of the PSRT PPDU is determined based on the value of a spatial reuse parameter (SRP) at the granularity of the bandwidth and the received power level (RPL) of a parameterized spatial reuse reception (PSRR) PPDU at the granularity of the bandwidth, and part or all of the PSRR PDDU is received by the first spatial reuse device in a first frequency band, the first frequency band includes one or more sub-bands having the bandwidth, and the second frequency band and the first frequency band are at least partially overlapped in an overlapping sub-band between the second frequency band and the one or more sub-bands occupied by the part or all of the PSRR PPDU received by the first spatial reuse device. A communication device comprising the above.

13. The communication device according to claim 11 or 12, wherein the RPL at the granularity of the bandwidth is determined based on the overlapping sub-band.

14. The RPL at the granularity of the bandwidth is in the first frequency band and based on the bandwidth of a non-punctured sub-band in the one or more sub-bands occupied by the part or all of the received PSRR PPDU, or The communication device according to claim 11 or 12, which is determined based on one of the bandwidths of non-punctured sub-bands in the overlapping sub-bands.

15. The communication device according to claim 11 or 12, wherein the reference transmission power is further determined based on the bandwidth of a non-punctured sub-band in the second frequency band.

16. The reference transmission power is further determined based on a bandwidth of a non-punctured sub-band in an overlapping sub-band between the second frequency band and the one or more sub-bands occupied by the part or all of the received PSRR PPDU in the first frequency band, the communication device according to claim 11 or 12.

17. Puncturing indication information included in a preamble in the received PSRR PPDU, Puncturing indication information included in the PSRR PPDU, where the PSRR PPDU is a non-high-throughput replicated PPDU, or A second determination module configured to determine a non-punctured sub-band of the first frequency band based on at least one of puncturing indication information included in a management frame of a basic service set (BSS) where the second spatial reuse device is located, where the management frame includes at least one of a beacon frame, an association response frame, a probe response frame, a neighbor report frame, or a reduced neighbor report frame The communication device according to claim 11, further comprising.

18. A third determination module configured to determine to puncture the PSRT PPDU, and An adjustment module configured to adjust the reference transmission power based on an offset The communication device according to claim 11, further comprising.

19. The first frequency band includes a plurality of sub-bands, and the value of the SRP at the granularity of the bandwidth is the minimum value among a plurality of values of the SRP for the plurality of sub-bands, the communication device according to claim 11 or 12.

20. A transmission module configured to transmit a part or all of a parameterized spatial reuse reception (PSRR) physical layer protocol data unit (PPDU) in a first frequency band, where the first frequency band includes one or more sub-bands having the same bandwidth, and a trigger frame carried by the PSRR PPDU includes a value of a spatial reuse parameter (SRP) at the granularity of the bandwidth, and For a sub-band scheduled for puncturing in the first frequency band, An operation of adjusting the value of the spatial reuse parameter (SRP) based on a predetermined offset, and An operation of setting the value of the SRP to a first value to indicate to other spatial reuse devices that transmission of the PPDU in the puncture-scheduled sub-band is prohibited, or A determination module configured to determine the SRP through one of an operation of setting the value of the SRP to a second value to indicate to other spatial reuse devices that transmission in the puncture-scheduled sub-band is permitted A communication device comprising the same.

21. A processor, wherein the processor is coupled to a memory, the memory stores instructions, and when the instructions are executed by the processor, the method according to any one of claims 1 to 10 is performed. A communication device comprising the same.

22. A computer-readable storage medium, wherein the computer-readable storage medium stores a program, and when at least a part of the program is executed by a processor in a device, the device is enabled to perform the method according to any one of claims 1 to 10.

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