Space reuse methods, apparatus, devices, and media

Abstract

To provide a spatial reuse method, a communication apparatus, a communication device, and a storage medium that reduce interference to reception of the spatial reuse device and improve system efficiency.SOLUTION: In a method, a first spatial reuse device receives some or all of PSRR PPDUs transmitted by a second spatial reuse device over a first frequency band. On the basis of a value of a spatial reuse parameter SRP using bandwidth granularity and a received power level RPL of the PSRR PPDUs using the bandwidth granularity, the first spatial reuse device determines a reference transmission power for transmitting a PSRT PPDU over a second frequency band. The RPL of the PSRR PPDUs using the bandwidth granularity is in the first frequency band and is determined on the basis of one or more of the following: one or more subbands occupied by some or all of the PSRR PPDUs received by the first spatial reuse device, or a subband in the first frequency band or the second frequency band that is not punctured.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] This disclosure relates to the field of wireless local area networks, and more specifically to methods, apparatus, and media for spatial reuse. [Background technology]

[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 to 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 drawbacks of large interference between devices and low system efficiency. Summary of the Invention Means for Solving the Problems

[0004] This 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 bandwidth granularity and the received power level (RPL) of the PSRR PPDU at the bandwidth granularity. 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 bandwidth granularity 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 bandwidth granularity is determined based on the overlapping sub-bands between the second frequency band and one or more sub-bands in the first frequency band occupied by part or all of the PSRR PPDU received by the first spatial reuse device.

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

[0009] In some implementations, the reference transmit power is determined based on either the bandwidth of a non-punctured subband in a second frequency band, or the bandwidth of a non-punctured subband in an overlapping subband between the second frequency band and one or more subbands in the first frequency band that are occupied by some or all of the PSRR PPDU received by the first space reuse device.

[0010] In some implementations, a first spatial reuse device can determine a non-punctured subband of a first frequency band based on at least one of the following: puncturing indication information contained in the preamble of a received PSRR PPDU; puncturing indication information contained in a PSRR PPDU, wherein the PSRR PPDU is a non-high-throughput replica PPDU; or puncturing indication information contained in a management frame of a basic service set BSS on which a second spatial reuse device is located, wherein 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 space reuse device decides to puncture the PSRT PPDU. The first space reuse device adjusts the reference transmit power based on a predetermined offset.

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

[0013] In some implementations, the first frequency band includes multiple subbands. The SRP value at the bandwidth granularity is the minimum of multiple SRP values ​​for the multiple subbands.

[0014] In some implementations, determining the reference transmit power for transmitting a PSRT PPDU in a second frequency band includes the first space reuse device determining the reference transmit power for transmitting a PSRT PPDU in a subband based on the SRP value for one subband of the first frequency band and the RPL of the PSRR PPDU in the subband, wherein the subband of the first frequency band is included in the second frequency band.

[0015] In some implementations, the first spatial reuse device determines that, for a puncture subband in the superimposed subband between the second frequency band and the first frequency band, it does not permit the transmission of PSRT PPDUs in the puncture subband, or the first spatial reuse device determines that the reference transmit power in the puncture subband is less than a predetermined maximum transmit power.

[0016] In some implementations, the first space reuse device determines the reference transmit power in the puncture subband in the superimposed subband between the second frequency band and the first frequency band, based on one or more reference transmit powers determined for one or more non-puncture subbands in the superimposed subband between the second frequency band and the first frequency band.

[0017] In some implementations, determining the reference transmit power in a puncture subband involves a first space reuse device determining the reference transmit power in the puncture subband as the minimum reference transmit power among multiple reference transmit powers determined for multiple non-puncture subbands, or as the average power of multiple reference transmit powers.

[0018] In some implementations, the first space reuse device determines the reference transmit power in the puncture subband based on the SRP value for the puncture subband, for the puncture subband in the superimposed subband between the second frequency band and the first frequency band.

[0019] A second aspect of this disclosure provides a spatial reuse method. In this method, a second spatial reuse device is used to transmit a physical layer protocol data unit (PPDU) and determines a corresponding value of SRP through one of the following operations: adjusting the value of a spatial reuse parameter SRP based on a predetermined offset for a puncture-scheduled subband in a first frequency band including a plurality of subbands having the same bandwidth; and setting the value of SRP to a first value to indicate to other spatial reuse devices that transmission of PPDUs in the puncture-scheduled subband is prohibited, or setting the value of SRP to a second value to indicate to other spatial reuse devices that transmission in the puncture-scheduled subband is permitted. The second spatial reuse device then transmits a punctured PPDU in an unpunctured subband of the first frequency band, and the trigger frame carried in the PPDU includes the determined value of SRP.

[0020] A third aspect of this disclosure provides a communication device. The device includes a receiving module and a first determination module. The receiving module is configured to receive some or all of a PSRR PPDU transmitted by a second spatial reuse device in a first frequency band by a first spatial reuse device, the first frequency band including one or more subbands having the same bandwidth. The first determination module is configured to determine a reference transmit power for the first spatial reuse device to transmit a PSRT PPDU in the second frequency band, based on a value of a spatial reuse parameter SRP at bandwidth granularity and a received power level RPL of the PSRR PPDU at bandwidth granularity. The RPL of the PSRR PPDU at bandwidth granularity is determined based on one or more subbands in the first frequency band that are occupied by some or all of the received PSRR PPDU, or one or more unpunctured subbands of the first or second frequency band.

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

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

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

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

[0025] In some implementations, the device further includes a second decision module. The second decision module is configured to determine a non-punctured subband of the first frequency band based on at least one of the following: puncturing indication information contained in the preamble within a received PSRR PPDU; puncturing indication information contained in a PSRR PPDU, wherein the PSRR PPDU is a non-high-throughput replica PPDU; or puncturing indication information contained in a management frame of a base service set BSS on which the second spatial reuse device is located, wherein 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 device further includes a third determination module configured to determine that the PSRT PPDU is punctured by a first space reuse device. The device further includes a tuning module configured to adjust the reference transmit power based on a predetermined offset by the first space reuse device.

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

[0028] In some implementations, the first frequency band includes multiple subbands. The SRP value at the bandwidth granularity is the minimum of multiple SRP values ​​for the multiple subbands.

[0029] In some implementations, the first decision module is configured to determine, by a first space reuse device, a reference transmit power for transmitting a PSRT PPDU in a subband, based on the SRP value for one subband of a first frequency band and the RPL of the PSRT PPDU in the subband, where the subband of the first frequency band is included in the second frequency band.

[0030] In some implementations, the first decision module is configured to determine, with respect to a puncture subband in the superimposed subband between the second frequency band and the first frequency band, that the first spatial reuse device does not permit the transmission of PSRT PPDUs in the puncture subband, or that the first spatial reuse device determines that the reference transmit power in the puncture subband is less than a predetermined maximum transmit power.

[0031] In some implementations, the first determination module is configured to determine a reference transmit power in a puncture subband in the superimposed subband between the second frequency band and the first frequency band, based on one or more reference transmit powers determined by the first spatial reuse device for one or more non-puncture subbands in the superimposed subband between the second frequency band and the first frequency band.

[0032] In some implementations, the first decision module is configured to determine, by a first space reuse device, the reference transmit power in the puncture subband as the minimum reference transmit power among multiple reference transmit powers determined for multiple non-puncture subbands, or as the average power of multiple reference transmit powers.

[0033] In some implementations, the first decision module is configured to determine the reference transmit power in the puncture subband based on the SRP value for the puncture subband, using a first space reuse device, for the puncture subband in the superimposed subband between the second frequency band and the first frequency band.

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

[0035] A fifth aspect of this disclosure provides a communication device, which includes a processor, which is coupled to memory, which stores instructions, and when an instruction is executed by the processor, a method according to the first or second aspect of this disclosure is performed.

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

[0037] Please understand that the information provided in the summary is not intended to limit any key or important features of this disclosure, nor to limit the scope of this disclosure. The following explanations will facilitate understanding of other features of this disclosure.

[0038] The above and other features, advantages, and aspects of the embodiments of this 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 explanation of the drawing]

[0039] [Figure 1] This is a schematic diagram of an OBSS formed by partially superimposing one BSS onto another. [Figure 2] This is a schematic diagram of the frame format for uplink scheduling transmissions based on the 802.11ax trigger frame. [Figure 3] Figure 2 is a schematic diagram of the trigger frame format shown. [Figure 4] This is a schematic diagram of the frame format for common information fields and user information fields within an 802.11ax trigger frame. [Figure 5] This is a schematic flowchart of 802.11ax spatial reuse transmission. [Figure 6] This figure shows an exemplary environment in which the embodiments of this disclosure may be implemented. [Figure 7A] This is a schematic diagram of a spatial reuse transmission process according to some embodiments of the present disclosure. [Figure 7B] This is a schematic diagram of a spatial reuse transmission process according to some other embodiments of the present disclosure. [Figure 7C] This is a schematic diagram of a spatial reuse transmission process according to some other embodiments of the present disclosure. [Figure 7D] This is a schematic diagram of the frame format of some subfields of the common information field and user information field included in the trigger frame according to some embodiments of the present disclosure. [Figure 8] This is a flowchart of a space reuse method according to some embodiments of the present disclosure. [Figure 9]This is a schematic diagram of channel division of 80 / 160 / 320MHz bandwidths in the 6GHz band according to one embodiment of the present disclosure. [Figure 10] This is a flowchart of a space reuse method according to some other embodiments of the present disclosure. [Figure 11] This is a schematic diagram of an apparatus according to several embodiments of the present disclosure. [Figure 12] This is a schematic diagram of an apparatus according to some other embodiments of the present disclosure. [Figure 13] This is a block diagram of a device for carrying out some embodiments of the present disclosure. [Modes for carrying out the invention]

[0040] The embodiments of this disclosure are described in detail below with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the accompanying drawings, it should be understood that this disclosure may be carried out in various forms and should not be construed as being limited to the embodiments described herein. On the contrary, these embodiments are provided so as to enable a thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are used merely as examples and are not intended to limit the scope of protection of this disclosure.

[0041] As used herein, the terms “including” and their variations indicate open inclusion, i.e., “including but not limited to.” The term “based on” means “based at least in part.” The term “one embodiment” means “at least one embodiment,” and the term “another embodiment” means “at least one other embodiment.” Relevant 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 elements should not be limited by these terms. These terms are used solely to distinguish one element from another. As used herein, the term "and / or" includes any combination 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 services it requires. An example of an AP is a router. As used herein, the term “Station” or “STA” refers to a user terminal that can access the services it requires through an Access Point (AP). An example of a Station (STA) is a personal computer, tablet computer, personal digital assistant (PDA), and mobile phone.

[0044] WLAN devices such as APs and STAs operate on unlicensed spectrum and gain the opportunity to transmit Physical Layer Protocol Data Units (PPDUs) or other packets or data packets by competing for channels. As mentioned above, as the density of WLAN devices increases, it is becoming more common for Basic Service Sets (BSSs) to enter the basic service areas of other BSSs, forming Overlapping BSSs (OBSSs). In this case, 802.11ax proposes a Spatial Reuse method. Through adaptive adjustment of transmit power, devices in an Overlapping BSS can transmit simultaneously.

[0045] Figure 1 is a schematic diagram of an OBSS formed by partially superimposing one BSS on another.

[0046] First, overlapping basic service sets (OBSS) are described. When a basic service set (BSS) not associated with a station and a BSS associated with a station operate in the same frequency band (also called a channel), and the unassociated BSS is (partially or completely) within the basic service area of ​​the associated BSS, the unassociated BSS is called the station's overlapping basic service set (OBSS). A basic service area is an area that contains members of a basic service set, and may also contain members of other BSSs.

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

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

[0049] AP1 or AP2 can use the trigger frame in the trigger frame-based uplink scheduling transmission process to transmit space reuse parameters. As shown in Figures 2 to 4, the trigger frame-based uplink scheduling transmission process is described below.

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

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

[0052] Figure 4 is a schematic diagram of the frame format of the common information field 305 and the user information field 315 within the trigger frame 205.

[0053] As shown in Figure 4, the common information field 305 includes the Uplink Spatial Reuse (UL Spatial Reuse) subfield 405. In the user information field 315, the association identification 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 a specific resource unit (RU) assigned to the STA (the STA indicated by AID 12).

[0054] After receiving the trigger frame 205, STA1 or STA3 or both parse the trigger frame 205 for the user information field 315 that matches the AID of STA1 and / or STA3, and then 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 located in the user information field 315, indicated by the resource unit allocation subfield 415, as shown in Figure 2. STA1 and / or STA3 may 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 HE TB PPDU210, AP1 sends an acknowledgment frame 215 back to STA1 and / or STA3 to acknowledge that AP1 has received HE TB PPDU210.

[0056] For the meaning and function of the fields that may be included in the HE TB PPDU210 shown in Figure 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 in OBSS. Based on the information in the uplink space reuse subfield 405 within the trigger frame 205, AP2 and AP1 can perform space reuse transmissions in OBSS. As shown in Figure 5, the following describes an exemplary process of space reuse transmissions by AP1 and AP2.

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

[0060] First, AP1 (i.e., AP115) sends a Parameterized Spatial Reuse Reception (PSRR) PPDU505 containing the trigger frame 205 to STA1. 4 As shown, the common information field 305 in the trigger frame 205 includes an uplink spatial reuse (UL Spatial Reuse) field 405 that carries the Uplink Spatial Reuse Parameter (UL SRP). The value of the UL SRP is the sum of the AP1's transmit power and the maximum interference power that the 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 UL SRP values ​​are equal in a 20 MHz bandwidth. When the bandwidth is 40 MHz, UL SRP1 = UL SRP3 indicates a first 20 MHz subband, which may also be called a subchannel or subblock, and UL SRP2 = UL SRP4 indicates a 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 represent four 20 MHz subbands. When the bandwidth is 160MHz, the four UL SRPs each represent any 20MHz subband in each of the four 40MHz subbands, and the values ​​for two 20MHz subbands in the 40MHz 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 Figure 4.

[0062] The UL SRP value is determined by AP1 and is the sum of AP1's transmit power and the maximum interference power that AP1 can tolerate.

[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 (determining that STA1 has indeed transmitted the HE TB PPDU 210), AP2 calculates the values ​​of the four UL SRP1 to 4 and / or the four SRP1 to 4 in the HE TB PPDU based on the Received Power Level (RPL) of the PSRR PPDU 505, and with this power, AP2 transmits the Parameterized Spatial Reuse Transmission (PSRT) PPDU. The transmit power must satisfy the following equation: The transmit power for AP2 to transmit the PSRT PPDU is ≤ SRP - RPL, equation (A).

[0064] Next, after detecting that HE TB PPDU210 has been transmitted, AP2 transmits PSRT PPDU510 based on the power calculated according to equation (A) above.

[0065] In the above formula, RPL represents the power in the frequency band of the PSRR PPDU. The transmit power used by AP2 to transmit the PSRT PPDU is normalized to 20MHz. If the bandwidth of SRP:HE TB PPDU is 160MHz, the bandwidth is normalized to 20MHz. If the bandwidth of HE TB PPDU is equal to 160MHz, the bandwidth is normalized to 40MHz.

[0066] Through research, the inventors have found that the above 802.11ax space reuse transmission method does not specifically consider transmit power normalization, nor does it consider bandwidth mismatch between PSRT PPDU and PSRR PPDU. In addition, this method does not consider power normalization in the presence of punctured preambles for PSRT PPDU and / or PSRR PPDU. As a result, the transmit power calculated by the AP is inaccurate, further causing interference between APs and reducing system throughput.

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

[0068] In addition, the first spatial reuse device determines the RPL of the PSRR PPDU at bandwidth granularity based on one or more subbands located in the first frequency band and occupied by some or all of the PSRR PPDU received by the first spatial reuse device, which are non-punctured subbands of the first or second frequency band. In this way, when calculating the transmit power of the PSRT PPDU, the first spatial reuse device can take into account bandwidth matching and / or puncturing of the PSRT PPDU and the PSRR PPDU.

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

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

[0071] As shown in Figure 6, environment 600 includes two space reuse devices: a first space reuse device 602 and a second space reuse device 604. In this example, both the first space reuse device 602 and the second space reuse device 604 are implemented as access points (APs). Environment 600 further includes STA606, STA608, and STA610. STA606 and STA608 can communicate with the first space reuse device 602, and STA610 can communicate with the second space reuse device 604. The first space reuse device 602 and the second space reuse device 604 can communicate with STA606, STA608, and STA610 wirelessly. Communication may conform to any suitable communication technology and corresponding communication standards. As shown in Figure 6, the first space reuse devices 602, STA606, and STA608 belong to one BSS612, and the second space reuse devices 604 and STA610 belong to another BSS614. The two BSS612 and 614 are OBSSs. In some embodiments, in BSS612, only one STA can communicate with the first space reuse device 602. In BSS614, multiple STAs can communicate with the second space reuse device 604.

[0072] When the second space reuse device 604 located within BSS614 can transmit data to STA610, the first space reuse device 602 located within BSS612 can receive information transmitted by the second space reuse device 604. Conversely, the second space reuse device 604 may also receive information transmitted by the first space reuse device 602. The first space reuse device 602 can adaptively adjust the power it transmits to STA608 based on space reuse parameters transferred by the second space reuse device 604. Similarly, the second space reuse device 604 can also adaptively adjust the power it transmits to STA610 based on space reuse parameters transferred by the first space 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 an limitation. The first spatial reuse device 602 and the second spatial reuse device 604 in this disclosure may be various other devices suitable for spatial reuse transmission depending on the specific implementation and scenario, including but not limited to APs and STAs such as communication servers, routers, switches, bridges, computers, and mobile phones, and are not limited to the APs in the example. In addition, Figure 6 shows only an example where the device communicating with the first spatial reuse device 602 and the second spatial reuse device 604 is an STA. This disclosure is not limited thereto and depends on the specific implementation and scenario. 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 environment 600, for illustrative purposes only, shows two space reuse devices and three devices communicating with them, namely STA606, STA608, and STA610. However, embodiments of the present disclosure may be applied to a number of other space reuse devices, which can communicate with a suitable number of other devices.

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

[0076] The following describes an exemplary space reuse transmission process between the first space reuse device 602 and the second space reuse device 604 with reference to Figures 7A, 7B, and 7C. In the examples shown in Figures 7A, 7B, and 7C, both the first space reuse device 602 and the second space reuse device 604 are implemented as APs, separately denoted as AP2 and AP1.

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

[0078] As shown in Figure 7A, in accordance with 802.11be, AP1 (as an example of a second space reuse device 604) transmits a PSRR PPDU 701 carrying the trigger frame to STA1. In some embodiments, the PSRR PPDU 701 may be any PPDU (e.g., a PSRR PPDU carrying the management frame), and AP2 then uses only the PSRR PPDU to obtain the RPL. The SRP value is obtained using any PPDU (e.g., an HE / EHT TB PPDU) transmitted by STA1 that carries the SRP. Further explanation is provided below with reference to Figure 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: HE TB PPDU and / or EHT TB PPDU of STA1. AP2 (as an example of the first space reuse device 602) can perform space reuse based on HE TB PPDU and / or EHT TB PPDU. In some embodiments, AP2 does not receive (or does not rely on) HE TB PPDU and / or EHT TB PPDU but can perform space reuse directly using the PSRR PPDU carrying the trigger frame. Further explanation is provided below with reference to Figure 7B.

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

[0081] Using trigger frames SRP An example illustrating this is explained below with reference to Figure 7D.

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

[0083] As shown in Figure 7D, the common information field 705 in the trigger frame contains four Uplink Parameterized Spatial Reuse (UL PSR) fields 710, each with a length of 4 bits. In the frame format shown in Figure 7D, the user information list field 715 further contains a special user information field, namely the Association Identifier 12 (AID 12) field 720. Field 720 shows a predetermined value (2007), indicating that the field is an extension of the common information field and contains two 4-bit UL SRP fields 725 and 730 used for the EHT TB PPDU and represented separately 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 represents the first 20 MHz subband, and EHT UL SRP2 represents the second 20 MHz subband. 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 subband in each of the two 40 MHz subbands, and the values ​​for the two 20 MHz subbands in the 40 MHz subband are the same.

[0088] When the bandwidth is 160MHz, the two EHT UL SRPs each indicate any 20MHz subband in each of the two 80MHz subbands, and the values ​​for the four 20MHz subbands in the 80MHz subband are the same.

[0089] When the bandwidth is 320MHz, the two EHT UL SRPs each indicate any 20MHz subband in each of the two 160MHz subbands, and the values ​​for the eight 20MHz subbands in the 160MHz subband are the same.

[0090] The above-described methods for configuring the SRP are merely some embodiments of the Disclosure and are not limited to those described herein; the SRP may be configured in other ways.

[0091] Figure 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 process shown in Figures 7B and 7A will not be described again here. The differences between the two processes will be described below. As mentioned above, in process 700A shown in Figure 7A, STA1 begins spatial reuse transmission after receiving HE TB PPDU 702 and / or EHT TB PPDU 703. However, in process 700B shown in Figure 7B, AP2 begins spatial reuse transmission after receiving PSRR PPDU 701 carrying the trigger frame. In other words, after time point 735 in Figure 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 Figure 7B, AP2 completes spatial reuse transmission using only PSRR PPDU. In some embodiments, STA1 may not have to send the HE / EHT TB PPDU if, for example, STA1's channel is busy or STA1 does not correctly receive the trigger frame.

[0093] Figure 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 process shown in both Figures 7C and 7B and 7A will not be described again here. In process 700C, AP2 may decide to perform a spatial reuse transmission without receiving a trigger frame from AP1. As shown in Figure 7C, AP1 transmits a PSRR PPDU 740 carrying a beacon frame. AP2 may obtain an RPL when it obtains the beacon frame. AP2 may then perform a spatial reuse transmission after receiving the HE TB PPDU 745 and / or EHT PPDU 750.

[0095] Figure 8 is a flowchart of a space reuse method 800 according to some embodiments of the present disclosure. Method 800 may be carried out by a first space reuse device 602 or a second space reuse device 604. For ease of explanation, Method 800 will be described below with reference to Figure 9, in terms of the first space reuse device 602.

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

[0097] The first frequency band is the operating frequency band of the second space 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 subbands (also called subchannels or subblocks) having the same bandwidth. The bandwidth of the subbands can also include 20 MHz, 40 MHz, 80 MHz, 160 MHz, 320 MHz, etc. For example, if the first frequency band is 320 MHz and the subband bandwidth is 20 MHz, the first frequency band includes 16 subbands. Similarly, if the first frequency band is 320 MHz and the subband bandwidth is 40 MHz, the first frequency band includes 8 subbands.

[0098] In different scenarios, the first space reuse device 602 receives some or all of the PSRR PPDU transmitted by the second space reuse device 604 on the first frequency band. Further explanation is provided below with reference to Figure 9.

[0099] Figure 9 is a schematic diagram of channel division of 80 / 160 / 320 MHz bandwidths in the 6 GHz band according to one embodiment of the present disclosure.

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

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

[0102] As another example, in one embodiment, the first space reuse device 602 is implemented as a station (STA), which has only an 80 MHz capability or operates in 80 MHz mode. The first space reuse device 602 has a bandwidth of 160 MHz, and upon receiving a PSRR PPDU transmitted by the second space reuse device 604, the first space reuse device 602 can receive only one 80 MHz of the PSRR PPDU, and similarly can receive approximately half the power of the PSRR PPDU's total bandwidth.

[0103] When the first space reuse device 602 and the second space reuse device 604 operate on channels with different channel center frequencies, it is found that one space reuse device can only receive a portion of the PSRR PPDU transmitted by the other space reuse device. As a result, a bandwidth mismatch occurs. In some embodiments of this disclosure, this problem is considered when the first space reuse device 602 determines the transmit power of the PSRR PPDU. Details are described below.

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

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

[0106] In some embodiments, the first spatial reuse device 602 can obtain SRPs from the received PSRR PPDU, specified by the second spatial reuse device 604 for each subband, and contained in the trigger frame carried in the PSRR PPDU, and calculate the value of the SRP at the subband bandwidth granularity based on the SRPs. 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 into the HE-SIG-A field in the transmitted HE TB PPDU, and / or copy the EHT UL SRP field in the received trigger frame into the U-SIG field in the transmitted EHT TB PPDU. Correspondingly, after receiving the HE TB PPDU and / or EHT TB PPDU, the first spatial reuse device 602 can obtain the SRPs for each subband. Next, the first space reuse device 602 can calculate the transmit power to which the first space reuse device 602 transmits the PSRT PPDU based on one or more of the UL SRP value and 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 SRP value may be in the trigger frame of the PSRR PPDU, or in the HE / EHT TB PPDU transmitted by a given receiver (e.g., STA610) of the PSRR PPDU. In this example, if the first space reuse device 602 receives the PSRR PPDU transmitted by the second space reuse device 604 and acquires the RPL using the preamble but does not acquire the trigger frame in the data field, the first space reuse device 602 can acquire 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 space reuse device 602 can determine the RPL based on the PSRR PPDU and obtain the SRP value from the HE / EHT PPDU transmitted by another device (e.g., an STA communicating with the second space reuse device 604). For example, in addition to the HE / EHT TB PPDU, the HE / EHT PPDU may further include one or more of the following: HE Multi-User (MU) PPDU, EHT MU PPDU, HE Single-User (SU) PPDU, and HE Extended Range (ER) SU PPDU. The PSRR PPDU and HE / EHT PPDU do not have to be adjacent to each other in time series. The SRP value in the HE / EHT PPDU may be received from the second space reuse device 604. Alternatively or additionally, the SRP value may be an SRP value set by another device. Both UL SRP and EHT UL SRP represent values ​​on a subband (e.g., a 20 MHz bandwidth). As described above, in existing reuse methods, the SRP values, RPL, and PSRT PPDU transmit power are not normalized to the same bandwidth, and therefore the calculated transmit power is not sufficiently accurate. For the sake of accuracy in calculations, in embodiments of this disclosure, RPL is also normalized to a subband bandwidth, e.g., 20 MHz.

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

number

[0110] Here, TxPower PSRTThis shows the total transmit power transmitted by the first space reuse device 602 for the PSRT PPDU, and is an example of the reference transmit power of the PSRT PPDU in the second frequency band. In this example, the reference transmit power of the PSRT PPDU is determined for the entire second frequency band. The reference transmit power of the PSRT PPDU for the entire second frequency band is determined by normalizing the entire operating frequency band to 20 MHz. In addition, BW PSRT This indicates the bandwidth of the PSRT PPDU (i.e., the bandwidth of the second frequency band), and PSR kth,20MHz This indicates the PSR value indicated by one or more of the following: the k-th 20MHz corresponding UL SRP within the bandwidth range of the PSRR PPDU, for example, 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. PSRR This shows the layer power of the PSRR PPDU received by the first space reuse device 602 within the bandwidth range of the PSRR PPDU, BW PSRR This indicates the bandwidth of the PSRR PPDU (i.e., the bandwidth of the first frequency band).

[0111] From the above formula, TxPower PSRT teeth

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 can be used for the calculation. Optionally, different corresponding values of the SRP can be used to calculate different TxPower kth,20MHz for different k, where k = 1..., BW PSRT / 20 MHz. PSRR

[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 transmit power calculation can be improved.

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

[0115] If the frequency range width of the PSRR PPDU received by the first space reuse device 602 is a portion of the bandwidth of the PSRR PPDU transmitted by the second space reuse device 604, then the received RPL PSRR It is smaller. According to Equation 2, the calculated TxPower PSRTThis is actually greater than the allowable value. In response to this, in some embodiments, the first space reuse device 602 can determine the RPL of the PSRR PPDU based on one or more subbands that are in the first frequency band and occupied by some or all of the received PSRR PPDU, so that bandwidth mismatch is taken into account when calculating the transmit power of the PSRT PPDU. This further improves the accuracy of the transmit power calculation.

[0116] In the following, the first space reuse device 602, when bandwidth mismatch is considered, the second frequency band This section provides a specific example of how to determine the reference transmit power for transmitting the PSRT PPDU.

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

number

[0118] Here, BW PSRR,Rx This indicates the frequency range of the PSRR PPDU received by the first space reuse device 602, and RPL PSRR,Rx This represents the power of the PSRR PPDU received by the first space reuse device 602 within the frequency range. By comparing Equation 1 and Equation 3, in Equation 3, the parameter RPL of Equation 1 is expressed. PSRR The parameter RPL PSRR,Rx Replaced with the parameter BW of Equation 1 PSRR The parameter BW PSRR,Rx It can be seen that it can be replaced with this.

[0119] In Equation 3, in addition to the usual full bandwidth of the 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 problem caused by bandwidth mismatch and further improves the accuracy of the transmission power calculation.

[0120] In some embodiments, the RPL at bandwidth granularity is determined based on superimposed subbands between a second frequency band and one or more subbands in the first frequency band that are occupied by some or all of the PSRR PPDU received by the first space reuse device 602. Specific examples are described below.

[0121] In this example, BW PSRR,Rx and RPL PSRR,Rx In addition, BW PSRR,Rx and RPL PSRR,Rx It can also be used. As shown in equation 3a below, BW <PSRR,PSRT> This indicates the size of the frequency range of the superposition 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> This indicates the power received in the superimposed region of the PSRR PPDU.

number

[0122] In one embodiment, the first frequency band includes multiple subbands, and these subbands have multiple values ​​of SRP. When calculated according to Equation 3a, each PSR kth,20MHz Regarding this, the minimum PSR in the superposition region between the first frequency band and the second frequency band kth,20MHzThe following can be selected. Optionally, for different k, different TxPower PSRT Different corresponding values ​​of SRP may be used to calculate the result, where k=1...,BW <PSRR,PSRT> It is / 20MHz.

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

[0124] When the bandwidth of the PSRT PPDU is greater than the frequency range of the superposition region between the bandwidth of the PSRT PPDU and the bandwidth of the PSRR PPDU, the frequency range of the superposition 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 space reuse device 602. In this case, equation 3 is equal to equation 3a.

[0125] In some embodiments, the first space reuse device 602 and / or the second space reuse device 604 may perform preamble puncturing when transmitting the PPDU. Preamble puncturing indicates that the preamble and data are not transmitted in the 20 MHz subband within the bandwidth range of the PPDU, or that energy is not transmitted. However, the above equation always uses the full 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:

number

[0126] In the case of preamble puncturing, the total bandwidth of the PSRR PPDU and / or PSRT PPDU is greater than the equivalent bandwidth with power transmission, which is TxPower PSRT This can lead to an inaccurate increase. The puncture portion of the preamble is assumed to occupy up to 50% of the PPDU's total bandwidth. If the entire PPDU bandwidth is used in addition to the equivalent bandwidth with power transmission, the right-hand side of the inequality is up to 3+3=6 dB larger than the actual situation. Calculated TxPower PSRT This is up to 6 dB greater than the actually acceptable value. The BW of PPDU is twice the equivalent bandwidth, i.e.

number

[0127] In response to this, in one embodiment, the first space reuse device 602 or the second space reuse device 604 or both perform preamble puncturing on the PSRR PPDU and / or PSRT PPDU. To further improve the accuracy of the transmit power calculation, the RPL of the PSRR PPDU at the subband bandwidth granularity may be determined based on the unpunctured subbands of the first or second frequency band.

[0128] In some embodiments, the transmit power of the PSRT PPDU may be calculated considering both the superposition and puncturing of the first and second frequency bands. For example, the RPL at subband bandwidth granularity is determined based on either the bandwidth of an unpunctured subband in one or more subbands located in the first frequency band and occupied by some or all of the PSRR PPDU received by the first spatial reuse device 602, or the bandwidth of an unpunctured subband in a superposition subband between the second frequency band and one or more subbands located in the first frequency band and occupied by some or all of the PSRR PPDU received by the first spatial reuse device 602.

[0129] Optionally or additionally, in some embodiments, the reference transmit power of the PSRT PPDU may be determined based on the bandwidth of a non-punctured subband in a second frequency band, or on one of the bandwidths of a non-punctured subband in an overlapping subband between the second frequency band and one or more subbands in the first frequency band that are occupied by some or all of the PSRR PPDUs received by the first space reuse device 602.

[0130] The following describes a specific example of how the PSRT PPDU's transmit power is determined by considering both the superposition and puncturing of the first and second frequency bands to determine the reference transmit power of the PSRT PPDU.

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

number

[0132] Here, BW PSRT,non-punc This indicates the equivalent bandwidth excluding the puncture portion, BW PSRR,Rx,non-punc This indicates the equivalent bandwidth of the received PSRR PPDU, excluding the puncture portion within its frequency range. Since there is no energy transmitted in the puncture portion, RPL PSRR,Rx RPL PSRR,Rx,non-punc It is equal to.

[0133] Similar to some of the embodiments described above, the frequency range of the received PSRR PPDU may also be replaced by the superposition region of the frequency bands occupied by the PSRT PPDU and the PSRR PPDU. <PSRR,PSRT>,non-punc This is the equivalent bandwidth excluding the puncture portion within the superposition region between the bandwidth of the PSRT PPDU and the bandwidth of the PSRR PPDU. After puncturing has been taken into account, equation 3a can be expressed as follows:

number

[0134] Similarly, RPL <PSRR,PSRT> and RPL <PSRR,PSRT>,non-punc It is the same as that.

[0135] Since the PSRT PPDU will be transmitted by the first spatial reuse device 602, the first spatial reuse device 602 knows the puncturing state or estimated puncturing state of the PSRT PPDU. With regard to the puncturing state of the PSRR PPDU, in some embodiments, the first spatial reuse device 602 can determine the unpunctured subband of the first frequency band based on at least one of the puncturing indication information: puncturing indication information contained in the preamble of the received PSRR PPDU; puncturing indication information contained in the PSRR PPDU, wherein the PSRR PPDU is a non-high-throughput replica PPDU; or puncturing indication information contained in the management frame of the basic service set BSS on which the second spatial reuse device 604 is located, wherein 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.

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

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

[0138] As yet another example, a PSRR PPDU is a HE MU PPDU. The puncturing information of a 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 used directly in calculations. When the Bandwidth subfield indicates 4 or 5, the total bandwidth is 80 MHz, and one 20 MHz subband is punctured (PPDU BW is 80 MHz, and the equivalent bandwidth is 60 MHz). When the Bandwidth subfield indicates 6, the total bandwidth is 160 MHz, and 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 number is unknown. In this case, BW PSRT,non-punc Or BW <PSRR,PSRT>,non-punc If is the primary 80MHz channel, the first space reuse device 602 can clearly determine the puncturing state. Alternatively, when the bandwidth subfield indicates 7, the total bandwidth is 160MHz, at least one 20MHz subband is punctured, zero, one, or two 20MHz subbands of the primary 80MHz channel are punctured, and zero, one, or two 20MHz subbands of the secondary 80MHz channel are punctured.

[0139] In some embodiments, when the PSRR PPDU is a non-HT duplicate PPDU, the PSRR PPDU can carry bandwidth and puncturing information. Specifically, the information may reside within the service field. Accordingly, the first space reuse device 602 can determine the non-punctured subband of the first frequency band based on the puncturing instruction information contained in the PSRR PPDU.

[0140] In some other embodiments, the first spatial reuse device 602 can determine the unpunctured subband of the first frequency band based on puncture instruction information contained in the management frame of the BSS in which the second spatial reuse device 604 is located. For example, static puncture information indicating that a 20 MHz subband is punctured may be carried in a management frame such as a beacon frame, association response frame, probe response frame, neighbor report frame, or reduced neighbor report frame.

[0141] In the aforementioned case, the first space reuse device 602 can clearly determine the puncture state of the PSRR PPDU using signaling instructions.

[0142] In some embodiments, the puncturing state of the PSRR PPDU can be alternatively determined through blind detection by a first space reuse device 602. For example, the first space reuse device 602 can detect whether or not a non-HT preamble of the PSRR PPDU is present at each 20 MHz.

[0143] In some embodiments, for the preamble puncturing problem, the first space reuse device 602 adjusts the reference transmit power based on a predetermined offset. This simplifies the processing of the first space reuse device 602 and further improves computational efficiency. In some embodiments, the predetermined offset may be set to 3 dB. As described above, when the maximum allowable percentage of puncturing is 50%, puncturing of the PSRT PPDU and puncturing of the PSRR PPDU separately cause an inaccurate increase of up to 3 dB. Therefore, TxPower PSRT During the calculation, a 3dB or 6dB offset is directly subtracted. This avoids inaccurate increases caused by puncturing of the PSRT PPDU and / or PSRR PPDU.

[0144] In some embodiments, the reference transmit power of the PSRT PPDU (e.g., TxPower) is used. PSRT When calculating TxPower, the first space reuse device 602 can adjust for the transmission power calculation deviation caused by puncturing of PSRR PPDU based on the offset. For example, the first space reuse device 602 can adjust for the TxPower calculated according to equations 1 / 2 / 3 / 3a. PSRT An offset, for example 3dB, can be further reduced from this. Indeed, the first space reuse device 602 can adjust based on the equivalent bandwidth if it knows the puncturing state of the PSRR PPDU, and adjust based on the offset if it does not know the puncturing state of the PSRR PPDU. In some embodiments, if it is known that the PSRR PPDU will not be punctured, the first space reuse device 602 does not need to adjust. In some embodiments, the first space reuse device 602 may always adjust.

[0145] In some embodiments, the second space reuse device 604 can make adjustments based on an offset when setting the UL SRP / EHT UL SRP value to compensate for the transmit power calculation deviation caused by puncturing of the PSRR PPDU. For example, if preamble puncturing is used for the PSRR PPDU, an offset, e.g., 3dB, is further reduced from the initially set PSR value. If the PSRR PPDU is not punctured, the second space reuse device 604 does not need to further reduce the offset. In this way, backward compatibility can be achieved if the first space reuse device 602 is a conventional device. In addition, the operation of the first space reuse device 602 may be simplified, as the first space reuse device 602 does not need to consider offset adjustments. Indeed, for simplification, in some embodiments, the second space reuse device 604 may always reduce the offset, e.g., 3dB.

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

[0147] In some embodiments, with respect to the transmit power calculation deviation caused by puncturing of the PSRT PPDU, the second space reuse device 604 can adjust the offset when setting the SRP value. For example, an offset, e.g., 3dB, is further subtracted from the initially set PSR value to adjust for the transmit power calculation deviation, e.g., 3dB, caused by puncturing of the PSRT PPDU.

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

[0149] In some embodiments, when the effects of puncturing of the PSRT PPDU and the PSRR PPDU are considered simultaneously, the first space reuse device 602 and the second space reuse device 604 can perform the corresponding offset adjustments separately. For example, the first space reuse device 602 can perform TxPower PSRTA 3dB offset can be reduced during the calculation, and the second space reuse device 604 can reduce the 3dB offset when setting the SRP value. In some embodiments, a 6dB reduction may be provided by one device.

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

[0151] A specific example is explained below.

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

[0153] Here, the range of k is BW <PSRR,PSRT>,non-punc In other words, if preamble puncturing is present in the PSRR PPDU, the transmit power of the PSRT PPDU can be determined for the unpunctured subband of the first frequency band according to Equation 6. In this example, when receiving the PSRR PPDU, the first space reuse device 602 needs to sense the power at each 20 MHz, and TxPower at a granularity of 20 MHz. PSRT,kth,20MHz We need to calculate this.

[0154] In the event of a bandwidth mismatch, for example, if the PSRR PPDU is not received at 160 MHz due to 320 MHz channels 320-1 and 320-2 shown in Figure 9, or if the bandwidth of the PSRR PPDU is smaller than the bandwidth of the PSRT PPDU, or if preamble puncturing is present in the PSRR PPDU, the TxPower on the 20 MHz subband or subchannel will not receive the PSRR PPDU. PSRT,jth,20MHz The following rules can be used, where j indicates the 20MHz channel index where the PSRR PPDU is not received, and BW <PSRR,PSRT>,punc It can be located in this position.

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

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

[0157] In some other embodiments, the first space reuse device 602 determines the reference transmit power in the puncture subband as the average power of multiple reference transmit powers determined for multiple non-puncture subbands. For example, the minimum TxPower obtained through calculation by Equation 6 PSRT,kth,20MHz , or BW <PSRR,PSRT>,non-punc TxPower is located PSRT,kth,20MHz The average value may be used for transmission. This method can be seen as a trade-off between the two methods above, where the transmit power is not limited and space reuse is not permitted. SRP on the unpunctured 20MHz subband where PSRR PPDU is received is TxPower on the 20MHz subband where PSRR PPDU is not received (due to puncturing or bandwidth mismatch). PSRT,jth,20MHz It is used to make a decision.

[0158] For example, based on formula 6, BW <PSRR,PSRT>,non-punc Further deductions can be made to sum up all 20MHz parameters in the equation.

number

[0159] Here,

number

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

number

number

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

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

number

[0163] The above several control methods, each with 20MHz TxPower PSRT,kth,20MHz A method for calculating this is provided. In this way, the granularity for calculating the PSRT PPDU's transmit power can be directly normalized to the subband bandwidth. This improves the accuracy of the calculation.

[0164] In some embodiments described above, how the transmit power is accurately calculated has been explained. However, embodiments of the present disclosure are not limited thereto. The calculation process may be alternatively avoided by using the UL SRP field. This simplifies the calculation and improves the computational efficiency. For example, in some embodiments, the first space reuse device 602 can determine the reference transmit power of the PSRT PPDU in the puncture subband based on the SRP value on the puncture subband.

[0165] Referring to Figure 11, the following describes how the second spatial reuse device 604 sets up the UL SRP field when preamble puncturing is present in the PSRR PPDU, as shown by how the first spatial reuse device 602 or other spatial reuse devices perform spatial reuse transmission in the puncture subband.

[0166] Figure 10 is a flowchart of a space reuse method 1000 according to some other embodiments of the present disclosure. Method 1000 may be carried out by a second space reuse device 604.

[0167] In box 1010 of method 1000, the second space reuse device 604 determines the corresponding value of the SRP through one of the following actions: adjusting the value of the space reuse parameter (SRP) based on a predetermined offset for a puncture-scheduled subband in a first frequency band for transmitting physical layer protocol data units (PPDUs) (e.g., PSRR PPDUs); setting the value of the SRP to a first value to indicate to other space reuse devices that transmission of PPDUs in the puncture-scheduled subband is prohibited; or setting the value of the SRP to a second value to indicate to other space reuse devices that transmission in the puncture-scheduled subband is permitted.

[0168] As described above, in some embodiments, the SRP value is adjusted based on a predetermined offset so that the first space reuse device 602 can adjust the transmit power of the PSRT PPDU accordingly to compensate for the transmit power calculation deviation caused by 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 subband or subchannel where the PSRR PPDU is not received, the UL SRP values ​​of the UL SRP field and / or EHT UL SRP field corresponding to the 20 MHz subchannel will be set to specific values, for example (see table below). 2 It can be set to 0 or 15 (as shown in [reference]).

[0170] In some embodiments, if preamble puncturing is present in the PSRR PPDU, the UL SRP values ​​of all UL SRP fields and / or EHT UL SRP fields may be set to a specific value, for example, 0 or 15, in order to simplify implementation. For example, the UL SRP values ​​of all UL SRP fields and / or EHT UL SRP fields may be 0 or 15 When this setting is enabled, other space reuse devices (e.g., the first space reuse device 602) may be instructed to prohibit transmissions in subbands where puncturing needs to be performed for PPDU.

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

[0172] The following table 2 This shows an example of setting the UL SRP value.

[0173] [Table 2]

[0174] In some embodiments, if the second spatial reuse device 604 does not restrict PSR-based spatial reuse performed by the first spatial reuse device 602 in the 20 MHz subband where the PSRR PPDU is not received, the UL SRP value may be set to a value other than 0 or 15, for example, a PSR value of 14. 2 As shown, this represents the maximum acceptable PSR value.

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

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

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

[0178] As shown in Figure 11, the apparatus 1100 includes a receiving module 1105 and a first determination module 1110. The receiving module 1105 is configured to receive some or all of the PSRR PPDU transmitted by the second spatial reuse device 604 in a first frequency band by a first spatial reuse device 602, the first frequency band including one or more subbands having the same bandwidth. The first determination module 1110 is configured to determine a reference transmit power for transmitting the PSRR PPDU in the second frequency band by the first spatial reuse device 602, based on the value of the spatial reuse parameter (SRP) at the bandwidth granularity and the received power level (RPL) of the PSRR PPDU at the bandwidth granularity. The RPL of the PSRR PPDU at the bandwidth granularity is determined based on one or more subbands in the first frequency band that are occupied by some or all of the received PSRR PPDU, or one or more unpunctured subbands of the first or second frequency band.

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

[0180] In some embodiments, the RPL at bandwidth granularity is determined based on superimposed subbands between a second frequency band and one or more subbands located in the first frequency band and occupied by part or all of the received PSRR PPDU.

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

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

[0183] In some embodiments, the device 1100 further includes a second decision module. The second decision module is configured to determine a non-punctured subband of a first frequency band based on at least one of the following: puncturing indication information contained in the preamble within a received PSRR PPDU; puncturing indication information contained in a PSRR PPDU, wherein the PSRR PPDU is a non-high-throughput replica PPDU; or puncturing indication information contained in a management frame of a basic service set BSS on which a second spatial reuse device 604 is located, wherein 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, the device 1100 further includes a third determination module configured to determine that the PSRT PPDU is punctured by the first space reuse device 602. The device 1100 further includes a tuning module configured to adjust the reference transmit power based on a predetermined offset by the first space reuse device 602.

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

[0186] In some embodiments, the first frequency band includes multiple subbands. The SRP value at the bandwidth granularity is the minimum of multiple SRP values ​​for the multiple subbands.

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

[0188] In some embodiments, the first decision module 1110 is configured to determine, with respect to a puncture subband in the superimposed subband between the second frequency band and the first frequency band, that the first spatial reuse device 602 does not permit the transmission of a PSRT PPDU in the puncture subband, or that the first spatial reuse device 602 determines that the reference transmit power in the puncture subband is less than a predetermined maximum transmit power.

[0189] In some embodiments, the first determination module 1110 is configured to determine a reference transmit power in a puncture subband in an overlapping subband between a second frequency band and a first frequency band, based on one or more reference transmit powers determined by the first space reuse device 602 for one or more non-puncture subbands in the overlapping subband between the second frequency band and the first frequency band.

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

[0191] In some embodiments, the first determination module 1110 is configured to determine, by the first space reuse device 602, the reference transmit power in the puncture subband as the minimum reference transmit power among multiple reference transmit powers determined for multiple non-puncture subbands, or as the average power of multiple reference transmit powers.

[0192] In some embodiments, the first determination module 1110 is configured to determine a reference transmit power in the puncture subband based on the SRP value for the puncture subband, using the first space reuse device 602, for the puncture subband in the superimposed subband between the second frequency band and the first frequency band.

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

[0194] As shown in Figure 12, the device 1200 includes a fourth decision module 1205 and a transmit module 1210. The fourth decision module 1205 is used to transmit physical layer protocol data units (PPDUs) and is configured to determine a corresponding value of the spatial reuse parameter SRP through one of the following operations: adjusting the value of the spatial reuse parameter SRP based on a predetermined offset for puncture-scheduled subbands in a first frequency band, which include multiple subbands having the same bandwidth; setting the value of SRP to a first value to indicate to other spatial reuse devices that transmission of PPDUs in puncture-scheduled subbands is prohibited; or setting the value of SRP to a second value to indicate to other spatial reuse devices that transmission in puncture-scheduled subbands is permitted. The transmit module 1210 is configured to transmit punctured PPDUs in non-puncture-scheduled subbands of the first frequency band, and the trigger frame carried in the PPDU includes the determined value of SRP.

[0195] Referring to Figures 6 to 10, the space reuse methods described above are also applicable to devices 1100 and 1200 and should be understood to have the same effect. Further details are not described here. Any suitable space reuse technology currently known or to be developed in the future may be used here. The scope of this disclosure is not limited to these embodiments.

[0196] The modules included in the devices 1100 and 1200 can be implemented in a variety of ways, including software, hardware, firmware, or any combination thereof. In some embodiments, one or more modules may be implemented using software and / or firmware, for example, machine-executable instructions stored on a storage medium. In addition to, or instead of, machine-executable instructions, some or all of the modules in the devices 1100 and 1200 may be implemented at least partially using one or more hardware logic components. Examples of available hardware logic components, not limited to, include field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standards (ASSPs), systems-on-a-chip (SOCs), and composite programmable logic devices (CPLDs).

[0197] Figure 13 is a block diagram of device 1300 for carrying out some embodiments of the present disclosure. Device 1300 may be configured to carry out the method procedures of Figures 8 and 10.

[0198] As shown in Figure 13, device 1300 includes a processor 1310. The processor 1310 controls the operation and functionality of device 1300. For example, in some exemplary embodiments, the processor 1310 can perform various operations using instructions 1330 stored in a memory 1320 coupled to the processor 1310. The memory 1320 may be any suitable type applicable to the local technology environment and may 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 Figure 13, device 1300 may have multiple physically distinct memory units.

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

[0200] Referring to Figures 6 through 12, all the features described above are applicable to device 1300. Further details are not provided here.

[0201] In this embodiment of the disclosure, interference occurring in the reception of a space reuse device when the calculated transmit power of the PSRT PPDU is excessively high due to bandwidth mismatch and preamble puncturing is resolved and corrected. This reduces interference to the reception of the space reuse device and improves system efficiency.

[0202] In general, various exemplary embodiments of this disclosure may be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. Some embodiments may be implemented in hardware, while others may be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device. When embodiments of the exemplary embodiments of this disclosure are illustrated or described as block diagrams, flowcharts, or represented using certain other diagrams, it should be understood that the blocks, apparatus, systems, techniques, or methods described herein may be implemented as non-limiting examples in hardware, software, firmware, dedicated circuitry or logic, general-purpose hardware or controllers, or other computing devices, or any combination thereof.

[0203] For example, exemplary embodiments of this disclosure may be described in the context of machine-executable or computer-executable instructions. Machine-executable instructions are program modules that are executed on a device, for example, contained in a target real or virtual processor. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, etc., that perform a particular task or implement a particular abstract data structure. In various exemplary embodiments, the functionality of program modules may be combined or divided among the described program modules. Machine-executable instructions for program modules may be executed locally or in a distributed device. In a distributed device, program modules may reside on both local and remote storage media.

[0204] Computer program code used to implement the methods disclosed in this 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 dedicated computer, or another programmable data processing device so that when the program code is executed by a computer or another programmable data processing device, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The program code may run entirely on a computer, partially on a computer, as a standalone software package, partially on a computer and partially on a remote computer, or entirely on a remote computer or server.

[0205] In the context of this disclosure, machine-readable media or computer-readable media may be any tangible media that contains or stores, or has programs related to, a program for an instruction execution system, apparatus, or device. Machine-readable media may be machine-readable signal media or machine-readable storage media. Machine-readable media may include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. More detailed examples of machine-readable storage media include electrical connections to 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 the operations are shown in a specific order, this should not be understood as requiring that such operations be completed in a specific order in which they are shown, or that all exemplified operations be performed to obtain the desired result. In some cases, multitasking or parallel processing may be advantageous. Similarly, although the above description includes details of some specific implementation forms, this should not be interpreted as limiting the scope of any invention or claim, but rather as a description of specific exemplary embodiments that may be particular to a particular invention. Some features described herein in the context of separate exemplary embodiments may, alternatively, be combined into 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 subcombination.

[0207] While this subject matter has been described in language specific to structural features and / or methodological behavior, it should be understood that the subject matter as defined in the attached claims is not limited to the specific features or behaviors described above. Rather, the specific features or behaviors described above are disclosed as exemplary forms of implementing the claims. [Explanation of symbols]

[0208] 105 Basic Service Set (BSS) 110 BSS 115 Access Point (AP) 120 Stations (STA) 125 STA 130 AP 135 STA 205 trigger frames 210 High-Efficiency Trigger-Based Physical Layer Protocol Data Unit (HE TB PPDU) 215 Acknowledgment Frame 220 High-efficiency signal-field A (HE-SIG-A) field 305 Common Information Fields 310 User Information List Field 315 User Information Fields 405 Uplink Space Reuse Subfield 410 Association Identifier 12 (AID12) subfield 415 Resource Unit Allocation Subfield 420 Uplink Bandwidth (UL BW) Field 505 Parameterized Space Reuse Receive (PSRR) PPDU 510 PSRT PPDU 602 First Space Reuse Device 604 Second Space 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 Space 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 Space reuse methods 905 320MHz channel 910 320MHz channel 1000 space reuse methods 1100 equipment 1105 Receiver Module 1110 First decision module 1200 equipment 1205 The fourth decision module 1210 Transmitter Module 1300 devices 1310 Processor 1320 memory 1330 command 1340 Communication Unit

Claims

1. A method for reusing space, A first spatial reuse device receives part or all of a parameterized spatial reuse receive (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 20 MHz subbands. The steps include determining a reference transmit power for transmitting a parameterized spatial reuse transmit (PSRT) PPDU in a second frequency band by the first spatial reuse device, based on the value of the spatial reuse parameter (SRP) at a granularity of 20 MHz and the received power level (RPL) of the PSRR PPDU at a granularity of 20 MHz, and Includes, The second frequency band includes one or more 20 MHz subbands, and the second frequency band and the first frequency band overlap at least partially. A method in which the RPL at a granularity of 20 MHz is determined based on the bandwidth of one or more non-punctured subbands in the one or more 20 MHz subbands that are in the first frequency band and occupied by part or all of the PSRR PPDU received by the first space reuse device.

2. A method for reusing space, Steps include: receiving a parameterized spatial reuse transmit (PSRT) physical layer protocol data unit (PPDU) in a second frequency band from a first spatial reuse device by a communication device, wherein the second frequency band includes one or more 20 MHz subbands, the reference transmit power of the PSRT PPDU is determined based on the value of a spatial reuse parameter (SRP) at a 20 MHz granularity and the received power level (RPL) of a parameterized spatial reuse receive (PSRR PPDU) at a 20 MHz granularity, the PSRR PPDU is received by the first spatial reuse device in a first frequency band, the first frequency band includes one or more 20 MHz subbands, and the second frequency band and the first frequency band overlap at least partially. Includes, A method in which the RPL at a granularity of 20 MHz is determined based on the bandwidth of one or more non-punctured subbands in the one or more 20 MHz subbands that are in the first frequency band and occupied by part or all of the PSRR PPDU received by the first space reuse device.

3. The method according to claim 1 or 2, wherein the RPL at a granularity of 20 MHz is determined based on an overlapping subband between the second frequency band and the one or more 20 MHz subbands that are in the first frequency band and occupied by part or all of the PSRR PPDU received by the first space reuse device.

4. The method according to claim 1 or 2, wherein the RPL at a granularity of 20 MHz is determined based on the bandwidth of a non-punctured subband in a superimposed subband between the second frequency band and the one or more 20 MHz subbands that are in the first frequency band and occupied by part or all of the PSRR PPDU received by the first space reuse device.

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

6. The method according to claim 1 or 2, wherein the reference transmit power is further determined based on the bandwidth of a non-punctured subband in a superimposed subband between the second frequency band and the one or more 20 MHz subbands that are in the first frequency band and occupied by the part or all of the PSRR PPDU received by the first space reuse device.

7. The first space reuse device described above allows, Puncture instruction information included in the preamble within the received PSRR PPDU, Puncture instruction information included in the PSRR PPDU, wherein the PSRR PPDU is a non-high-throughput replicated PPDU, or Steps to determine the non-punctured subband of the first frequency band based on at least one of the puncturing instruction information included in the management frame of the basic service set BSS on which the second spatial reuse device is located, wherein the management frame includes at least one of the following: a beacon frame, an association response frame, a probe response frame, a neighbor report frame, or a reduced neighbor report frame. The method according to claim 1, further comprising:

8. The first space reuse device determines to puncture the PSRT PPDU, and the method is The method according to claim 1, further comprising the step of adjusting the reference transmit power based on the offset using the first space reuse device.

9. The method according to claim 1 or 2, wherein the first frequency band includes a plurality of subbands, and the value of the SRP at a granularity of 20 MHz is the minimum value among a plurality of values ​​of the SRP for the plurality of subbands.

10. A communication device, A receiving module configured to receive part or all of a parameterized spatial reuse receive (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 20 MHz subbands, A first determination module configured to determine a reference transmit power for transmitting a parameterized spatial reuse transmit (PSRT) PPDU in a second frequency band, based on the value of the spatial reuse parameter (SRP) at a granularity of 20 MHz and the received power level (RPL) of the PSRR PPDU at a granularity of 20 MHz. Equipped with, The second frequency band includes one or more 20 MHz subbands, and the second frequency band and the first frequency band overlap at least partially. A communication device in which the RPL at a granularity of 20 MHz is determined based on the bandwidth of one or more non-punctured subbands in the one or more 20 MHz subbands that are in the first frequency band and occupied by part or all of the PSRR PPDU received by the first space reuse device.

11. A communication device, A receiving module configured to receive parameterized spatial reuse transmit (PSRT) physical layer protocol data units (PPDUs) from a first spatial reuse device in a second frequency band, wherein the second frequency band includes one or more 20 MHz subbands, the reference transmit power of the PSRT PPDU is determined based on the value of a spatial reuse parameter (SRP) at a 20 MHz granularity and the received power level (RPL) of a parameterized spatial reuse receive (PSRR PPDU) at a 20 MHz granularity, the PSRR PPDU is received by the first spatial reuse device in a first frequency band, the first frequency band includes one or more 20 MHz subbands, and the second frequency band and the first frequency band are at least partially superimposed. Equipped with, A communication device in which the RPL at a granularity of 20 MHz is determined based on the bandwidth of one or more non-punctured subbands in the one or more 20 MHz subbands that are in the first frequency band and occupied by part or all of the PSRR PPDU received by the first space reuse device.

12. The communication device according to claim 10 or 11, wherein the RPL at a granularity of 20 MHz is determined based on superimposed subbands between the second frequency band and one or more 20 MHz subbands that are in the first frequency band and occupied by part or all of the received PSRR PPDU.

13. The communication device according to claim 10 or 11, wherein the RPL at a granularity of 20 MHz is determined based on the bandwidth of a non-punctured subband in a superimposed subband between the second frequency band and one or more 20 MHz subbands that are in the first frequency band and occupied by part or all of the received PSRR PPDU.

14. The communication device according to claim 10 or 11, wherein the reference transmit power is further determined based on the bandwidth of the non-puncture subband in the second frequency band.

15. The communication device according to claim 10 or 11, wherein the reference transmit power is further determined based on the bandwidth of a non-punctured subband in a superimposed subband between the second frequency band and the one or more 20 MHz subbands that are in the first frequency band and occupied by part or all of the received PSRR PPDU.

16. Puncture instruction information included in the preamble within the received PSRR PPDU, Puncture instruction information included in the PSRR PPDU, wherein the PSRR PPDU is a non-high-throughput replicated PPDU, or Puncture instruction information included in the management frame of the basic service set BSS on which the second spatial reuse device is located, wherein the management frame includes at least one of the puncture instruction information, which includes at least one of the beacon frame, association response frame, probe response frame, neighbor report frame, or reduced neighbor report frame, and a second decision module configured to determine the non-punctured subband of the first frequency band based on the puncture instruction information. The communication device according to claim 10, further comprising:

17. A third decision module configured to determine that the PSRT PPDU is punctured, A regulating module configured to adjust the reference transmit power based on the offset, The communication device according to claim 10, further comprising:

18. The communication device according to claim 10 or 11, wherein the first frequency band includes a plurality of subbands, and the value of the SRP at a granularity of 20 MHz is the minimum value among a plurality of values ​​of the SRP for the plurality of subbands.

19. A processor wherein the processor is coupled to a memory, the memory stores instructions, and when an instruction is executed by the processor, the method according to any one of claims 1 to 2 is performed. A communication device equipped with the following features.

20. A computer-readable storage medium, wherein the computer-readable storage medium stores a program, and when at least a portion of the program is executed by a processor in the device, the device is enabled to perform the method according to any one of claims 1 to 2.

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