Wireless transceiver, wireless transmission processing method thereof and wireless communication system

Abstract

The invention provides a wireless transceiver, a wireless transmission processing method thereof and a wireless communication system. The wireless transceiver comprises a communication module and a processing unit. The communication module is used for transmitting and receiving radio frequency signals. The processing unit is coupled to the communication module and is configured to: estimate a transmission path loss from the wireless transceiver to the OBSS receiving node when the communication module detects an OBSS packet; determining spatial reuse transmission power used by the communication module during spatial reuse transmission according to the transmission path loss; determining a spatial reuse MCS index value adopted during the spatial reuse transmission according to a normal MCS index value adopted during the normal transmission of the communication module and a power reduction amount of the spatial reuse transmission power relative to the normal transmission power; and performing spatial reuse transmission when the spatial reuse MCS index value meets a predetermined condition.

Description

Technical Field

[0001] The present disclosure relates to spatial reuse transmission, and more particularly to a wireless transceiver device, a wireless transmission processing method, and a wireless communication system that can avoid severe interference with overlapping basic service set (OBSS) nodes during spatial reuse transmission. Background Art

[0002] The IEEE 802.11ax standard specifies a spatial reuse mechanism, the purpose of which is to enable the reuse of wireless resources in the same frequency band of overlapping basic service sets (BSSs), thereby increasing the utilization efficiency of the frequency band. However, with the densification of wireless communication systems, each basic service set will be closer and closer, and the interference between basic service sets will also increase, thereby affecting the transmission of the entire system. Summary of the Invention

[0003] The present disclosure provides a wireless transceiver device, which includes a communication module and a processing unit. The communication module is used for radio frequency signal transmission and reception. The processing unit is coupled to the communication module and is configured to perform the following operations: when the communication module detects an overlapping basic service set (OBSS) packet transmitted by an overlapping basic service set transmission node, estimate the path loss from the wireless transceiver device to an overlapping basic service set receiving node, where the overlapping basic service set receiving node is the destination of the OBSS packet; determine the spatial reuse transmission power used by the communication module during spatial reuse transmission according to the path loss; determine the spatial reuse modulation and coding scheme index value used by the communication module during spatial reuse transmission according to the normal modulation and coding scheme (MCS) index value used by the communication module during normal transmission and the power reduction amount of the spatial reuse transmission power relative to the normal transmission power used by the communication module during normal transmission; and perform spatial reuse transmission using the spatial reuse modulation and coding scheme index value and the spatial reuse transmission power when the spatial reuse modulation and coding scheme index value meets a predetermined condition.

[0004] The present disclosure also provides a wireless transmission processing method, which is applicable to a wireless transceiver device and includes: when detecting an overlapping basic service set packet transmitted by an overlapping basic service set transmission node, estimating a transmission path loss from the wireless transceiver device to an overlapping basic service set receiving node, where the overlapping basic service set receiving node is the destination of the overlapping basic service set packet; determining a spatial reuse transmission power used by the wireless transceiver device when performing spatial reuse transmission according to the transmission path loss; determining a spatial reuse modulation and coding strategy index value used when performing spatial reuse transmission according to a normal modulation and coding strategy index value adopted by the wireless transceiver device when performing normal transmission and a power reduction amount of the spatial reuse transmission power relative to a normal transmission power adopted when performing normal transmission; and when the spatial reuse modulation and coding strategy index value meets a predetermined condition, performing spatial reuse transmission by using the spatial reuse modulation and coding strategy index value and the spatial reuse transmission power.

[0005] The present disclosure further provides a wireless communication system, which includes a first wireless transceiver device and a second wireless transceiver device. The second wireless transceiver device is configured to be wirelessly communicatively connected to the first wireless transceiver device, and belongs to the same basic service set (BSS) as the first wireless transceiver device, and performs the following operations: when detecting an overlapping basic service set packet transmitted by an overlapping basic service set transmission node, estimating a transmission path loss from the second wireless transceiver device to an overlapping basic service set receiving node, where the overlapping basic service set receiving node is the destination of the overlapping basic service set packet; determining a spatial reuse transmission power used by the second wireless transceiver device when performing spatial reuse transmission according to the transmission path loss; determining a spatial reuse modulation and coding strategy index value used when performing spatial reuse transmission according to a normal modulation and coding strategy index value adopted by the second wireless transceiver device when performing normal transmission and a power reduction amount of the spatial reuse transmission power relative to a normal transmission power adopted when performing normal transmission; and when the spatial reuse modulation and coding strategy index value meets a predetermined condition, performing spatial reuse transmission by using the spatial reuse modulation and coding strategy index value and the spatial reuse transmission power. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] To more fully understand the embodiments and their advantages, reference is now made to the following description taken in conjunction with the accompanying drawings, in which:

[0007] Figure 1 is a schematic diagram of the wireless communication system according to an embodiment of the present disclosure;

[0008] Figure 2 is a block schematic diagram of the wireless transceiver device according to an embodiment of the present disclosure; and

[0009] Figure 3 is a flowchart of the wireless transmission processing method according to an embodiment of the present disclosure. Detailed Implementation Modes

[0010] Embodiments of the present disclosure are discussed in detail below. However, it can be understood that the embodiments provide many applicable concepts that can be implemented in a wide variety of specific contexts. The discussed and disclosed embodiments are for illustrative purposes only and are not intended to limit the scope of the present disclosure.

[0011] In this document, a wireless transceiver device can represent a variety of different embodiments, including but not limited to, for example, mobile wireless transceiver devices such as a station (STA), laptop computer, mobile phone, tablet computer, etc. and / or fixed wireless transceiver devices such as an access point (AP), router, switch, computer device, server device, workstation, etc. In addition, the wireless transceiver device can support multiple-input multiple-output (MIMO) transmission, multiple-input single-output (MISO) transmission, single-input multiple-output (SIMO) transmission, and / or single-input single-output (SISO) transmission.

[0012] According to current Wi-Fi system specifications, the transmission modes used by a Wi-Fi system can include, for example, orthogonal frequency division multiplexing (OFDM) transmission mode, High Throughput (HT) mode, Very High Throughput (VHT) mode, High Efficiency (HE) mode, and Extremely High Throughput (EHT) mode, etc., where the High Throughput mode, Very High Throughput mode, High Efficiency mode, and Extremely High Throughput mode correspond to the wireless local area network (WLAN) standards of different communication generations such as Wi-Fi 4, Wi-Fi 5, Wi-Fi 6, Wi-Fi 7, etc. If the hardware specifications of the wireless transceiver device are better and the supported Wi-Fi system is more advanced, then more transmission modes can be used. Embodiments of the present disclosure can also support other wired and / or wireless communication technologies such as cellular network, Bluetooth, local area network (LAN), and / or Universal Serial Bus (USB).

[0013] Figure 1 Schematic diagram of the wireless communication system 100 according to an embodiment of the present disclosure. The wireless communication system 100 includes wireless access point devices 110, 120, 130 and wireless terminal devices 111 - 112, 121 - 123, 131 - 133. The wireless communication system 100 supports the Wi-Fi system specification, and the wireless access point devices 110, 120, 130 and the wireless terminal devices 111 - 112, 121 - 123, 131 - 133 can be an access point and a station in the Wi-Fi system specification respectively. The wireless access point devices 110, 120, 130 provide wireless access services within a certain range respectively, and the wireless terminal devices 111 - 112, 121 - 123, 131 - 133 can perform wireless communication connections with the wireless access point devices 110, 120, 130 through Wi-Fi channels (such as IEEE 802.11 channels) respectively to access the local network and / or an external network (such as the Internet). The wireless communication connections between the wireless access point device 110 and the wireless terminal devices 111 - 112, between the wireless access point device 120 and the wireless terminal devices 121 - 123, and between the wireless access point device 130 and the wireless terminal devices 131 - 133 may include but are not limited to registration procedures, authentication procedures and access procedures, establishment and release of wireless connections, and transmission and / or reception of control signals and / or transmission and / or reception of data signals, etc.

[0014] As Figure 1 shown, the wireless access point device 110 and the wireless terminal devices 111, 112 belong to the basic service set (BSS) S1, the wireless access point device 120 and the wireless terminal devices 121, 122, 123 belong to the basic service set S2, and the wireless access point device 130 and the wireless terminal devices 131, 132, 133 belong to the basic service set S3. The basic service sets S1 - S3 are overlapping basic service sets (OBSS) with each other. For example, for the wireless access point device 110 and the wireless terminal devices 111, 112 belonging to the basic service set S1, the basic service sets S2, S3 are overlapping basic service sets. The wireless communication system 100 supports technologies such as spatial reuse and basic service set coloring (BSS coloring).

[0015] Figure 2 Block diagram of the wireless transceiver device 200 according to an embodiment of the present disclosure. The wireless transceiver device 200 can be Figure 1Any one of the wireless access point devices 110, 120, 130 and the wireless terminal devices 111 - 112, 121 - 123, 131 - 133. The wireless transceiver device 200 includes an antenna 210, a communication module 220, a processing unit 230, and a storage unit 240. The antenna 210 is used for transmitting and receiving radio frequency signals. In some embodiments, the wireless transceiver device 200 may include multiple antennas 210, which can be used for transmitting and receiving multi - input and / or multi - output radio frequency signals. The communication module 220 is coupled to the antenna 210 and is used for receiving and demodulating radio frequency signals into packets (such as control signals or data signals), and modulating packets to be transmitted into radio frequency signals. The processing unit 230 is coupled to the communication module 220 and the storage unit 240 and is used for processing packets and determining the transmission mode of the communication module 220 according to the system state for signal transmission and reception. The processing unit 230 can be, for example, a microprocessor or an application - specific integrated circuit (ASIC), but is not limited thereto. The storage unit 240 can be any data storage device readable and executable by the processing unit 230. The storage unit 240 can be, for example, a subscriber identity module (SIM), a read - only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), a CD - ROM, a magnetic tape, a hard disk, a solid - state drive, a flash memory, or other data storage devices suitable for storing bit data and / or program code, but is not limited thereto.

[0016] Figure 3 Is a flowchart of the wireless transmission processing method 300 according to an embodiment of the present disclosure. The wireless transmission processing method 300 is applicable to Figure 1 In the wireless access point devices 110, 120, 130, the wireless terminal devices 111 - 112, 121 - 123, 131 - 133 in the wireless communication system 100, Figure 2 The wireless transceiver device 200, and / or other wireless transceiver devices supporting technologies such as spatial reuse and basic service set coloring. The wireless transceiver device performing the wireless transmission processing method 300 is also referred to as a BSS node. The wireless transmission processing method 300 can be performed when the BSS node detects an OBSS packet sent by a wireless transceiver device (hereinafter referred to as an OBSS node) in an overlapping basic service set.

[0017] First, perform operation S310 to estimate the transmission path loss (pathloss) from the BSS node to the OBSS receiving node. The BSS node can estimate the transmission path loss to the OBSS receiving node by using an offline table-building method, which is described as follows. The BSS node listens for OBSS packets sent by the OBSS node (including packets actively sent by the OBSS transmission node and packets passively sent by the OBSS receiving node) in its background program, and records the transmission information in the OBSS packet and the received signal strength indicator (RSSI) OBSS_RSSI measured when listening to the OBSS packet. If the listened OBSS packet includes information on the transmission power strength OBSS_TxPWR (such as a trigger frame), the BSS node can calculate the receiving path loss (path loss) OBSS_to_BSS_PL from the OBSS node to the BSS node as OBSS_TxPWR - OBSS_RSSI. Due to the channel reciprocity between the BSS node and the OBSS node, it can be estimated that the transmission path loss BSS_to_OBSS_PL from the BSS node to the OBSS node is also OBSS_TxPWR - OBSS_RSSI.

[0018] In contrast, if the listened OBSS packet does not include information on the transmission power strength OBSS_TxPWR, the BSS node can estimate the transmission power strength OBSS_TxPWR of the OBSS packet by querying its modulation coding scheme (MCS) index value (hereinafter referred to as the MCS index value)-maximum transmission power lookup table based on the MCS index value in the OBSS packet. Then, according to the channel reciprocity between the BSS node and the OBSS node, calculate the transmission path loss BSS_to_OBSS_PL from the BSS node to the OBSS node as OBSS_TxPWR - OBSS_RSSI. The MCS index value-maximum transmission power lookup table includes the MCS index value and the corresponding maximum transmission power. Generally speaking, the larger the MCS index value, the larger the corresponding maximum transmission power.

[0019] Based on the above description, the BSS node can obtain the transmission path loss from itself to each OBSS node in the overlapping basic service set, and accordingly establish a path loss lookup table for the BSS node corresponding to each OBSS node. In this way, when an OBSS packet is subsequently detected, the BSS node can obtain the transmission path loss from itself to the OBSS receiving node, the destination of this OBSS packet, from the path loss lookup table established offline.

[0020] Alternatively, the BSS node can estimate the transmission path loss to the OBSS receiving node in an online manner, which is described as follows. The BSS node obtains the transmission information in the OBSS packet and the received signal strength indicator OBSS_RSSI measured when detecting the OBSS packet by receiving the OBSS packet. If the OBSS packet includes the information of the transmission power strength OBSS_TxPWR, the BSS node can calculate the received path loss OBSSTx_to_BSS_PL from the OBSS transmission node to the BSS node as OBSS_TxPWR - OBSS_RSSI. Alternatively, if the detected OBSS packet does not include the information of the transmission power strength OBSS_TxPWR, the BSS node can estimate the transmission power strength OBSS_TxPWR of the OBSS packet from the MCS index value in the OBSS packet by querying the MCS index value - maximum transmission power lookup table it uses, and then calculate the received path loss OBSSTx_to_BSS_PL from the OBSS transmission node to the BSS node as OBSS_TxPWR - OBSS_RSSI.

[0021] Furthermore, under the condition that the wireless communication system is densely deployed (for example, the distance between each node is less than 2 meters), and the OBSS transmission node uses a high MCS index value (for example, 9 or above) to transmit the OBSS packet, it can be estimated that the OBSS receiving node receiving the OBSS packet is close to the OBSS transmission node. Therefore, it can be inferred that the received path loss OBSSTx_to_BSS_PL from the OBSS transmission node to the BSS node is approximately equal to the received path loss from the OBSS receiving node to the BSS node. Then, according to the characteristic of channel reciprocity, the transmission path loss BSS_to_OBSSRx_PL from the BSS node to the OBSS receiving node can be obtained in real time as BSS_to_OBSSRx_PL = OBSSTx_to_BSS_PL.

[0022] Next, operation S320 is performed. Based on the transmission path loss BSS_to_OBSSRx_PL from the BSS node to the OBSS receiving node, the spatial reuse transmission power SR_TxPWR used by the BSS node during spatial reuse transmission is determined, and the power reduction amount PWR of the spatial reuse transmission power SR_TxPWR relative to the normal transmission power Normal_TxPWR is obtained. drop The power detection parameter OBSS_PD used by the BSS node to detect the OBSS packet level is greater than the minimum power detection parameter OBSS_PD min and less than or equal to the maximum power detection parameter OBSS_PD maxUnder the condition that, in accordance with the provisions of the IEEE 802.11ax standard, the maximum transmission power SR_TxPWR used by the BSS node during the power-limited phase (including for spatial reuse transmission) max shall meet the conditions of Equation (1):

[0023] SR_TxPWR max = TX_PWR ref -(OBSS_PD level -OBSS_PD min ), (1)

[0024] where -82dBm ≤ OBSS_PD min ≤ OBSS_PD max ≤ -62dBm, and the reference transmission power level TX_PWR of the wireless transceiver device 200 ref is determined by its type. For example, if the wireless transceiver device 200 is a station that is not an access point, the reference transmission power level TX_PWR ref is 21dBm. If the BSS node detects that the OBSS transmission node uses a high MCS index value for transmission (for example, the MCS index value of the received OBSS packet is greater than or equal to the protected MCS threshold), in order to effectively reduce the interference of the BSS node's transmitted packets on the OBSS packets, in the embodiments of the present disclosure, the protected spatial reuse transmission power SR_TxPWR of the BSS node is estimated using the sensitivity lookup table and the transmission path loss BSS_to_OBSSRx_PL p shall satisfy Equation (2) as follows:

[0025] SR_TxPWR p = S_tbl(OBSS_MCS)+BSS_to_OBSSRx_PL - PWR_TLR, (2)

[0026] Where PWR_TLR is the power tolerance range. The larger its value is, the smaller the interference to the OBSS packet is correspondingly. OBSS_MCS is the MCS index value of the OBSS packet, and S_tbl is the sensitivity, which is a function of the MCS index value. That is to say, S_tbl(OBSS_MCS) is the sensitivity corresponding to OBSS_MCS. The sensitivity lookup table includes data such as the MCS index value and the corresponding sensitivity. For example, the sensitivity corresponding to the MCS index value of 0 is -80 dBm, and the sensitivity corresponding to the MCS index value of 10 is -60 dBm. Generally speaking, the larger the MCS index value is, the larger the corresponding sensitivity is. The power tolerance range PWR_TLR can be related to the MCS index value. If the MCS index value to be protected is higher, the power tolerance range PWR_TLR can be larger. The BSS node can pre-establish a power tolerance range lookup table and store the power tolerance range lookup table in its storage unit to determine the spatial reuse transmission power SR_TxPWR according to Equation (2) p When making a decision, select the corresponding power tolerance range PWR_TLR according to the MCS index value of the OBSS packet.

[0027] In addition, the BSS node further refers to the normal transmission power Normal_TxPWR it used to transmit packets in the normal transmission mode recently to obtain the spatial reuse transmission power SR_TxPWR, as shown in Equation (3):

[0028] SR_TxPWR = min(SR_TxPWR max , SR_TxPWR p , Normal_TxPWR), (3)

[0029] And the power reduction amount PWR drop of the spatial reuse transmission power SR_TxPWR relative to the normal transmission power Normal_TxPWR is as shown in Equation (4):

[0030] PWR drop = Normal_TxPWR - SR_TxPWR. (4)

[0031] After that, perform operation S330. According to the normal MCS index value Normal_Tx_MCS and the power reduction amount PWR drop, determine the spatial reuse MCS index value SR_Tx_MCS used by the BSS node during spatial reuse transmission. When the spatial reuse MCS index value SR_Tx_MCS meets the predetermined conditions, subsequent spatial reuse transmission can be performed. In some embodiments, according to the sensitivity lookup table, and considering that the packets transmitted by the BSS node during spatial reuse will also be interfered by OBSS packets, the spatial reuse MCS index value SR_Tx_MCS must satisfy Equation (5) as follows:

[0032] S_tbl(SR_Tx_MCS) ≤ S_tbl(Normal_Tx_MCS) - PWR drop -PWR_TLR. (5)

[0033] When determining whether to perform spatial reuse transmission, if a spatial reuse MCS index value SR_Tx_MCS that meets the conditions of Equation (5) can be found in the sensitivity lookup table, then perform operation S340, and use the spatial reuse MCS index value SR_Tx_MCS and the spatial reuse transmission power SR_TxPWR to perform spatial reuse transmission, that is, during the spatial reuse transmission, transmit the spatial reuse packet to other BSS nodes in the same basic service set with the spatial reuse MCS index value SR_Tx_MCS and the spatial reuse transmission power SR_TxPWR. Conversely, if a spatial reuse MCS index value SR_Tx_MCS that meets the conditions of Equation (5) cannot be found, then this spatial reuse transmission can be cancelled to avoid invalid transmission, thereby saving power consumption and avoiding interference to OBSS packets.

[0034] In summary, the present disclosure provides a wireless transmission processing method, which is applicable to any one of, for example, wireless access point devices 110, 120, 130, wireless terminal devices 111 - 112, 121 - 123, 131 - 133, and wireless transceiver device 200 in a wireless communication system. For example, it is executed by processing unit 230 in wireless transceiver device 200, and includes the following operations: when detecting an OBSS packet transmitted by an overlapping basic service set transmission node, estimating the transmission path loss from the wireless transceiver device to the overlapping basic service set receiving node, where the overlapping basic service set receiving node is the destination of the OBSS packet; determining the spatial reuse transmission power used by the wireless transceiver device during spatial reuse transmission according to the transmission path loss; determining the spatial reuse MCS index value used during spatial reuse transmission according to the normal MCS index value adopted by the wireless transceiver device during normal transmission and the power reduction amount of the spatial reuse transmission power relative to the normal transmission power adopted during normal transmission; and when the spatial reuse MCS index value meets a predetermined condition, performing spatial reuse transmission using the spatial reuse MCS index value and the spatial reuse transmission power. For example, during spatial reuse transmission, spatial reuse packets are transmitted to other BSS nodes in the same basic service set with the spatial reuse MCS index value and the spatial reuse transmission power. In an embodiment, the spatial reuse transmission rate is the minimum of the maximum transmission power, the protected spatial reuse transmission power, and the normal transmission power, and the maximum transmission power is TX_PWR ref -(OBSS_PD level -OBSS_PD min ), and the protected spatial reuse transmission power is S_tbl(OBSS_MCS)+BSS_to_OBSSRx_PL - PWR_TLR, where TX_PWR ref is the reference transmission power level of the wireless transceiver device, OBSS_PD level is the power detection parameter used by the wireless transceiver device to detect the OBSS packet, OBSS_PD min is the minimum power detection parameter, OBSS_MCS is the MCS index value of the OBSS packet, S_tbl(OBSS_MCS) is the sensitivity corresponding to OBSS_MCS, BSS_to_OBSSRx_PL is the transmission path loss, and PWR_TLR is the power tolerance range. In an embodiment, the predetermined condition is S_tbl(SR_Tx_MCS)≤S_tbl(Normal_Tx_MCS)-PWR drop-PWR_TLR, where SR_Tx_MCS is the spatial reuse MCS index value, Normal_Tx_MCS is the normal MCS index value, S_tbl(SR_Tx_MCS) and S_tbl(Normal_Tx_MCS) are the sensitivities corresponding to SR_TxMCS and Normal_Tx_MCS respectively, PWR drop is the power reduction amount, and PWR_TLR is the power tolerance range. In an embodiment, the wireless transmission processing method (which is executed by, for example, the processing unit 230 in the wireless transceiver device 200) further includes establishing a path loss lookup table based on the reception path loss from the wireless communication device to each node in the overlapping basic service set, and obtaining the transmission path loss by means of the path loss lookup table. In an embodiment, the wireless transmission processing method (which is executed by, for example, the processing unit 230 in the wireless transceiver device 200) further includes calculating the reception path loss from the OBSS transmission node to the wireless communication device based on the OBSS packet, and obtaining the transmission path loss by means of the reception path loss. In an embodiment, the reception path loss is OBSS_TxPWR - OBSS_RSSI, where OBSS_TxPWR is the transmission power intensity of the OBSS packet, and OBSS_RSSI is the received signal strength indicator measured when the wireless transceiver device detects the OBSS packet.

[0035] As can be seen from the above, according to the embodiments of the present disclosure, it is possible to ensure successful transmission of packets during the spatial reuse phase without interference with OBSS nodes, and at the same time protect the nodes in the same basic service set to ensure that they can receive packets using a high MCS index value.

[0036] Although the present disclosure has been disclosed above by way of embodiments, it is not intended to limit the present disclosure. Any person skilled in the art with ordinary knowledge in the relevant field can make some changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to that defined by the appended claims.

[0037]

Symbol Explanation

[0038] 100: Wireless communication system

[0039] 110, 120, 130: Wireless access point devices

[0040] 111, 112, 121, 122, 123, 131, 132, 133: Wireless terminal devices

[0041] 200: Wireless transceiver device

[0042] 210: Antenna

[0043] 220: Communication module

[0044] 230: Processing unit

[0045] 240: Storage unit

[0046] 300: Wireless transmission processing method

[0047] S1, S2, S3: Basic service set

[0048] S310, S320, S330, S340: Operations

Claims

1. A wireless transceiver device, comprising: a communication module for performing radio frequency signal transmission and reception; and a processing unit coupled to the communication module and configured to perform the following operations: When the communication module detects an overlapping basic service set packet transmitted by an overlapping basic service set transmission node, estimate the transmission path loss from the wireless transceiver device to an overlapping basic service set receiving node, where the overlapping basic service set receiving node is the destination of the overlapping basic service set packet; Determine the spatial reuse transmission power used by the communication module during spatial reuse transmission based on the transmission path loss; Determine the spatial reuse modulation and coding strategy index value used by the communication module during the spatial reuse transmission based on the normal modulation and coding strategy index value used by the communication module during normal transmission and the power reduction amount of the spatial reuse transmission power relative to the normal transmission power used by the communication module during the normal transmission; and When the spatial reuse modulation and coding strategy index value meets a predetermined condition, perform the spatial reuse transmission using the spatial reuse modulation and coding strategy index value and the spatial reuse transmission power.

2. The wireless transceiver device according to claim 1, wherein the spatial reuse transmission rate is the minimum of the maximum transmission power, the protected spatial reuse transmission power, and the normal transmission power, and the maximum transmission power is TX_PWR ref -(OBSS_PD level -OBSS_PD min ), and the protected spatial reuse transmission power is S_tbl(OBSS_MCS)+BSS_to_OBSSRx_PL-PWR_TLR, where TX_PWR ret is the reference transmission power level of the communication module, OBSS_PD level is the power detection parameter used by the communication module to detect the overlapping basic service set packet, OBSS_PD min is the minimum power detection parameter, OBSS_MCS is the modulation and coding strategy index value of the overlapping basic service set packet, S_tbl(OBSS_MCS) is the sensitivity corresponding to OBSS_MCS, BSS_to_OBSSRx_PL is the transmission path loss, and PWR_TLR is the power tolerance range.

3. The wireless transceiver device according to claim 2, wherein the predetermined condition is: S_tbl(SR_Tx_MCS) ≤ S_tbl(Normal_Tx_MCS) - PWR drop -PWR_TLR, Where SR_Tx_MCS is the index value of the spatial reuse modulation and coding strategy, Normal_Tx_MCS is the index value of the normal modulation and coding strategy, S_tbl(SR_Tx_MCS) and S_tbl(Normal_Tx_MCS) are the sensitivities corresponding to SR_Tx_MCS and Normal_Tx_MCS respectively, PWR drop is the power reduction amount, and PWR_TLR is the power tolerance range.

4. The wireless transceiver device according to claim 1, wherein the processing unit is configured to establish a path loss lookup table based on the reception path loss from the wireless communication device to each node in the overlapping basic service set, and obtain the transmission path loss through the path loss lookup table.

5. The wireless transceiver device according to claim 1, wherein the processing unit is configured to calculate the reception path loss from the overlapping basic service set transmission node to the wireless communication device based on the overlapping basic service set packet, and obtain the transmission path loss through the reception path loss.

6. The wireless transceiver device according to claim 5, wherein the reception path loss is OBSS_TxPWR - OBSS_RSSI, where OBSS_TxPWR is the transmission power intensity of the overlapping basic service set packet, and OBSS_RSSI is the received signal strength indicator measured by the communication module when detecting the overlapping basic service set packet.

7. The wireless transceiver device according to claim 6, wherein the transmission power intensity OBSS_TxPWR is estimated by the processing unit based on the modulation and coding strategy index value in the overlapping basic service set packet.

8. A wireless transmission processing method applicable to a wireless transceiver device, the wireless transmission processing method comprising: When detecting an overlapping basic service set packet transmitted by an overlapping basic service set transmission node, estimate the transmission path loss from the wireless transceiver device to an overlapping basic service set receiving node, where the overlapping basic service set receiving node is the destination of the overlapping basic service set packet; Determine the spatial reuse transmission power used by the wireless transceiver device during spatial reuse transmission based on the transmission path loss; Determine the spatial reuse modulation and coding strategy index value used for the spatial reuse transmission according to the normal modulation and coding strategy index value adopted by the wireless transceiver during normal transmission and the power reduction amount of the spatial reuse transmission power relative to the normal transmission power adopted during the normal transmission; and When the spatial reuse modulation and coding strategy index value meets the predetermined conditions, perform the spatial reuse transmission by using the spatial reuse modulation and coding strategy index value and the spatial reuse transmission power.

9. A wireless communication system, comprising: A first wireless transceiver; and A second wireless transceiver, configured to be wirelessly communicatively connected to the first wireless transceiver, and belong to the same basic service set as the first wireless transceiver, and perform the following operations: When detecting an overlapping basic service set packet transmitted by an overlapping basic service set transmission node, estimate the transmission path loss from the second wireless transceiver to the overlapping basic service set receiving node, where the overlapping basic service set receiving node is the destination of the overlapping basic service set packet; Determine the spatial reuse transmission power used by the second wireless transceiver during spatial reuse transmission according to the transmission path loss; Determine the spatial reuse modulation and coding strategy index value used for the spatial reuse transmission according to the normal modulation and coding strategy index value adopted by the second wireless transceiver during normal transmission and the power reduction amount of the spatial reuse transmission power relative to the normal transmission power adopted during the normal transmission; and When the spatial reuse modulation and coding strategy index value meets the predetermined conditions, perform the spatial reuse transmission by using the spatial reuse modulation and coding strategy index value and the spatial reuse transmission power.

10. The wireless communication system according to claim 9, wherein during the spatial reuse transmission, the second wireless transceiver transmits spatial reuse packets to the first wireless transceiver by using the spatial reuse modulation and coding strategy index value and the spatial reuse transmission power.

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