Wi-Fi communication method and circuit

Abstract

The present application provides a Wi-Fi communication method and circuit, the method comprising: after a predetermined idle period, switching from a first mode to a second mode, the first mode having a first capability, and the second mode having a second capability different from the first capability; switching from the second mode to the first mode after decoding of a first data packet fails; and receiving and decoding a second data packet in the first mode, wherein the first data packet is retransmitted as the second data packet.

Description

Technical Field

[0001] The present application generally relates to a Wi-Fi communication method and circuit. Background Art

[0002] Regarding the Wi-Fi function in Wi-Fi devices (such as but not limited to smartphones, routers), receive listening (RxListen) is a state in which the Wi-Fi device is listening (or waiting) for incoming data packets but is not actively transmitting any data. This is a low-power state used to save energy.

[0003] "Receive monitoring" is a key scenario for managing daily Wi-Fi usage (DoU) of smartphones. Typically, in terms of power consumption ratio, a station (STA) consumes 47% of power in receive monitoring, 27% in active reception, 25% in active transmission, and 1% in power saving mode.

[0004] Wi-Fi hotspots allow other devices (called stations or STAs) to connect to the internet through their cellular connections. An access point (AP) is a device that provides wireless connectivity to stations in a network. It acts as a central hub for communication in a Wi-Fi network. A station (STA) is any device such as a laptop, smartphone, tablet, etc. that connects to the wireless network provided by an AP.

[0005] When no devices (STAs) are connected to a Wi-Fi hotspot, or all connected devices are in power saving (PS) mode, the smartphone's Wi-Fi will be in the "receive listening" state almost 99% of the time. This helps save battery life because the phone is not actively transmitting data, but is ready to receive any connection requests or data transfers.

[0006] Power Save (PS) mode is a state in which a connected device reduces its power consumption by limiting its activities or entering a low-power state when not actively using the network.

[0007] Therefore, it is hoped that the power consumption of reception monitoring can be reduced. Summary of the invention

[0008] According to one embodiment, a Wi-Fi communication method of a transceiver device is provided. The Wi-Fi communication method includes: after a predetermined idle period, switching from a first mode to a second mode, wherein the first mode has a first capability and the second mode has a second capability different from the first capability; after a first data packet fails to be decoded, switching from the second mode to the first mode; and receiving and decoding a second data packet in the first mode, wherein the first data packet is retransmitted as the second data packet.

[0009] According to another embodiment, a Wi-Fi communication method for a Wi-Fi communication circuit is provided. The Wi-Fi communication method includes: entering a second mode from a first mode based at least on a transmission requirement being lower than a transmission requirement threshold and an idle period being longer than an idle period threshold, wherein the first mode has a first capability and the second mode has a second capability different from the first capability; and exiting the second mode based on a decoding result of a received data packet.

[0010] According to another alternative embodiment, a Wi-Fi communication circuit is provided. The Wi-Fi communication circuit includes: an advanced low power listen (ALPL) control circuit; and a Wi-Fi processing circuit connected to the ALPL control circuit. The ALPL control circuit is configured to: after a predetermined idle period, switch the Wi-Fi communication circuit from a first mode to a second mode, wherein the first mode has a first capability and the second mode has a second capability different from the first capability; after a decoding failure of a first data packet, switch the Wi-Fi communication circuit from the second mode to the first mode; and receive and decode a second data packet in the first mode, wherein the first data packet is retransmitted as the second data packet. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 Power gain evaluation according to one embodiment of the present application is demonstrated.

[0012] Figure 2A and Figure 2B The system behavior of the Advanced Low Power Listening (ALPL) operation of the Wi-Fi communication circuit according to one embodiment of the present application is shown.

[0013] Figure 3 The ALPL mode switching time required according to an embodiment of the present application is shown.

[0014] Figure 4 The ALPL definition according to one embodiment of the present application is shown.

[0015] Figure 5A and Figure 5B A Wi-Fi communication method according to an embodiment of the present application is presented.

[0016] Figure 6 A bandwidth switched local oscillator shift according to one embodiment of the present application is demonstrated.

[0017] Figure 7 A functional block diagram of a Wi-Fi communication circuit according to an embodiment of the present application is shown.

[0018] In the following detailed description, for the purpose of explanation, numerous specific details are listed to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these specific details. In other cases, well-known structures and devices are shown in schematic form to simplify the drawings. DETAILED DESCRIPTION

[0019] The technical terms of this application are based on general definitions in the technical field. If this application describes or explains one or some terms, the definition of the terms is based on the description or explanation of this application. Each disclosed embodiment has one or more technical features. In possible implementations, a technician in the technical field can selectively implement some or all of the technical features of any embodiment of this application, or selectively combine some or all of the technical features of the embodiments of this application.

[0020] An embodiment of the present application discloses an advanced low power listening (ALPL) mode with lower power consumption than a normal listening mode to reduce power consumption in receiving listening. An embodiment of the present application is applicable to, for example but not limited to, a transceiver device.

[0021] Figure 1 Power gain evaluation according to one embodiment of the present application is demonstrated.

[0022] like Figure 1 As shown, at time T1, when a Wi-Fi device having a Wi-Fi communication circuit is connected to an IEEE802.11be 4*4BW320 (bandwidth 320, meaning 320MHz) access point (AP) device, during idle time, the Wi-Fi communication circuit is in a normal listening mode, such as but not limited to IEEE 802.11be 2*2BW320MCS13 (modulation and coding scheme 13) 6G.

[0023] After a predetermined idle period, at time T2, the Wi-Fi communication circuit switches from the normal listening mode to the advanced low power listening (ALPL) mode, such as but not limited to IEEE 802.11be 2*2BW80 MCS9 6G. Obviously, the power consumption of the Wi-Fi communication circuit in the advanced low power listening mode is lower than that in the normal listening mode.

[0024] At time T3, the Wi-Fi communication circuit transmits a beacon packet in the ALPL mode.

[0025] At time T4, the Wi-Fi communication circuit remains in ALPL mode, such as but not limited to IEEE 802.11be 2*1BW80 MCS9 6G.

[0026] Figure 1The two tables in show the power consumption comparison between normal monitoring mode and ALPL mode. For example, in 2Rx monitoring, when the bandwidth is 6G, the power consumption of normal monitoring mode is 343.36, while the power consumption of ALPL mode is 201.52. Therefore, the power consumption of ALPL mode is reduced by -41% compared with normal monitoring mode. In the table, 11ax refers to IEEE 802.11ax.

[0027] Figure 2A and Figure 2B The system behavior of the Advanced Low Power Listening (ALPL) operation of the Wi-Fi communication circuit according to one embodiment of the present application is shown.

[0028] refer to Figure 2A According to an embodiment of the present application, a Wi-Fi communication circuit (ie, a Wi-Fi communication chip) receives a data packet DP1, such as but not limited to heavy traffic. Then, the Wi-Fi communication circuit enters a normal listening mode.

[0029] Then, the Wi-Fi communication circuit receives a data packet DP2, such as but not limited to low traffic. Then, the Wi-Fi communication circuit enters a normal listening mode.

[0030] After a predetermined idle period, the Wi-Fi communication circuit switches from the normal listening mode to the advanced low power listening mode, wherein the power consumption of the Wi-Fi communication circuit in the advanced low power listening mode is lower than that in the normal listening mode.

[0031] In the advanced low power listening mode, when the received data packet DP3 is sent at a higher capability, the Wi-Fi communication circuit cannot correctly decode or receive the high-capability data packet. Here, the higher capability means, for example, but not limited to, high bandwidth (BW320 (meaning 320MHz) or higher) and / or high modulation rate (MCS-11 or higher) and / or high physical layer (PHY) data rate (1K QAM (quadrature amplitude modulation) or higher). That is, if the data packet is sent at a high capability that exceeds the ALPL mode reception capability, the Wi-Fi communication circuit cannot correctly decode or receive the high-capability data packet. The Wi-Fi communication circuit decodes the packet header of the received data packet to identify the bandwidth, modulation rate, and PHY data rate of the received data packet to determine whether the Wi-Fi communication circuit can correctly decode the data packet in the ALPL mode.

[0032] Because the Wi-Fi communication circuit cannot correctly decode or receive the high-capability data packet DP3, the Wi-Fi communication circuit does not send an acknowledgment packet to the AP, so the AP retransmits the high-capability data packet DP4. In response to the Wi-Fi communication circuit being unable to correctly decode or receive the high-capability data packet (i.e., data packet decoding failure), the Wi-Fi communication circuit switches from the ALPL mode to the normal active mode. After entering the normal active mode, the Wi-Fi communication circuit correctly receives and decodes the retransmitted or retried high-capability data packet DP4. The Wi-Fi communication circuit then enters the normal listening mode again.

[0033] Then, the Wi-Fi communication circuit receives the data packet DP5 and enters the ALPL mode after a predetermined idle period.

[0034] In addition, Figure 2A In the embodiment, before receiving the data packet DP1, when another data packet is correctly decoded and received, the transceiver device according to one embodiment of the present application remains in the ALPL mode.

[0035] refer to Figure 2B .exist Figure 2B In the embodiment of the present invention, after entering the advanced low power listening mode, when the received data packet DP6 is sent at low capability, the Wi-Fi communication circuit correctly decodes or receives the low capability data packet DP6 in the ALPL active mode. Here, low capability means, for example but not limited to, low bandwidth (BW 80 (meaning 80MHz) or higher) and / or low modulation rate (MCS-9 or lower) and / or low physical layer (PHY) data rate (256QAM or lower). That is, if the data packet is sent at low capability within the ALPL mode receiving capability range, the Wi-Fi communication circuit will correctly decode or receive the low capability data packet DP6, so the Wi-Fi communication circuit will remain in the ALPL mode.

[0036] Then, the Wi-Fi communication circuit receives the low capability data packet DP7.

[0037] That is, in ALPL mode, when the Wi-Fi communication circuit receives a data packet that exceeds the receiving capability, the Wi-Fi communication circuit will switch from ALPL mode to normal mode; and in ALPL mode, when the Wi-Fi communication circuit receives a data packet sent within the receiving capability range, the Wi-Fi communication circuit will remain in ALPL mode. Next, normal mode means normal listening mode and normal active mode, while ALPL mode means ALPL listening mode and ALPL active mode.

[0038] Figure 3 The required ALPL mode switching time according to one embodiment of the application is shown. Figure 3 It varies according to the scene. Figure 3 As shown in the figure, if the data packet is sent by high modulation rate (≧MCS11) and high bandwidth (≧BW160), the data packet reception will fail in ALPL mode. The time from the previous failed reception of the data packet to the retransmitted data packet is about ~78us (maximum) from the protocol perspective. As long as the operation mode switching (from ALPL mode to normal mode) is completed within 50us, the retransmitted (or called retry) data packet should be correctly received by the Wi-Fi communication circuit.

[0039] exist Figure 3 The shortest operation mode switching time required to correctly receive the retransmitted data packet is: AIFS[AC] = AIFSN[AC] x aSlotTime + aSIFSTime = 2 x 9us + 16us = 34us (shortest), where AIFS refers to "arbitration frame interval", "SlotTime" refers to the time slot time, and "SIFSTime" refers to the short frame interval time. AIFSN[AC] includes 7 (BK), 3 (BE), 2 (VI), and 2 (VO). "aSlotTime" is 9us and "aSIFSTime" is 16us at 5GHz.

[0040] Figure 4 The definition of ALPL is shown according to an embodiment of the application. ALPL is associated with 256QAM and BW80, which is compatible with Wi-Fi 5 (with basic phase noise linearity). Similarly, Wi-Fi 7 is associated with 4KQAM (MCS13) and BE320 (with higher phase noise linearity). And so on.

[0041] That is, in one embodiment of the application, in ALPL mode, the modulation rate is lower than or equal to 256QAM, which reduces the power consumed from the synthesizer and the stabilization time required by the synthesizer is shorter than 40us.

[0042] Likewise, in one embodiment of the application, in ALPL mode, the bandwidth is less than or equal to BW80 (80 MHz), which reduces power consumption from the low noise amplifier (LNA), transimpedance amplifier (TZ), low pass filter, received signal strength indicator (RSSI) analog-to-digital converter (ADC), analog front end (AFE), which require a stabilization time of less than 3 us.

[0043] Next, the first mode is an example, but not limited to, a normal mode, having a first capability; the second mode is an example, but not limited to, an ALPL mode, having a second capability lower than (different from) the first capability. The first capability represents, for example, but not limited to, a bandwidth of 160 MHz (BW160) or higher, and / or a modulation rate of MCS11 (Modulation Coding Scheme 11) or higher, and / or a PHY data rate of 1KQAM or higher. The second capability represents, for example, but not limited to, a bandwidth of 80 MHz (BW80), and / or a modulation rate of MCS9, and / or a PHY data rate of 256QAM.

[0044] Figure 5A and Figure 5B A Wi-Fi communication method according to an embodiment of the application is shown. The Wi-Fi configuration of the Wi-Fi communication circuit is set to the second capability (256QAM and BW80).

[0045] ALPL is initialized and enabled. For example, the ALPL function settings are configured as: PHY data rate is lower than 256QAM and bandwidth is lower than 80MHz. After entering ALPL mode, Wi-Fi power consumption is saved.

[0046] In step 515, it is determined whether the transmission requirement of the Wi-Fi communication circuit exceeds the transmission requirement threshold. The transmission requirement threshold of the Wi-Fi communication circuit is, for example but not limited to, 256QAM and / or BW80 (i.e., the second capability). When the transmission requirement of the Wi-Fi communication circuit does not exceed the transmission requirement threshold (i.e., when the transmission requirement of the Wi-Fi communication circuit neither exceeds 256QAM nor BW80) (when step 515 is no), the process continues to step 520. When the transmission requirement of the Wi-Fi communication circuit exceeds the transmission requirement threshold (i.e., when the transmission requirement of the Wi-Fi communication circuit exceeds 256QAM or BW80) (when step 515 is yes), the process returns to the beginning (i.e., the Wi-Fi communication circuit is in normal mode).

[0047] In step 520, it is determined whether the data packet transmitted from the AP (source of the data packet) is intended for the Wi-Fi communication circuit. When step 520 is no (which means that the data packet transmitted from the AP is not intended for the Wi-Fi communication circuit), the process continues to step 525. When step 520 is yes (which means that the data packet transmitted from the AP is intended for the Wi-Fi communication circuit), the process returns to the beginning (i.e., the Wi-Fi communication circuit is in normal mode).

[0048] In step 525, it is determined whether the idle period is longer than an idle period threshold (for example but not limited to 10 ms). When step 525 is yes, the process continues to step 530. When step 525 is no, the process returns to the beginning (ie, the Wi-Fi communication circuit is in normal mode).

[0049] In step 530 , the Wi-Fi communication circuit enters the ALPL mode.

[0050] In step 535, by decoding the received data packet, the Wi-Fi communication circuit determines whether the BSS_color field (BSS_color is a number between 0 and 63, BSS refers to "Basic Service Set") of the data packet matches the network setting of the Wi-Fi communication circuit; whether the received data packet is AP-to-STA condition by checking the AP-STA flag; and whether the PHY data rate is higher than 256QAM or whether there is a bandwidth error.

[0051] When the BSS_color field of the data packet matches the network settings of the Wi-Fi communication circuit, the Wi-Fi communication circuit must process the received data packet. When the BSS_color field of the data packet does not match the network settings of the Wi-Fi communication circuit, the Wi-Fi communication circuit can make an intelligent decision whether to delay the transmission or continue based on the signal strength and interference level.

[0052] In step 535 , when the Wi-Fi communication circuit determines that the BSS_color field of the data packet matches the network setting of the Wi-Fi communication circuit, the flow continues to step 550 to exit the ALPL mode.

[0053] In step 535 , when the Wi-Fi communication circuit determines that the received data packet is AP-to-STA condition by checking the AP-STA flag, the flow proceeds to step 550 to exit the ALPL mode.

[0054] In step 535 , when the Wi-Fi communication circuit determines that the PHY data rate is higher than 256QAM or there is a bandwidth error, the flow will enter step 550 to exit the ALPL mode.

[0055] That is, in step 535, (1) when the Wi-Fi communication circuit determines that the BSS_color field of the data packet does not match the network setting of the Wi-Fi communication circuit, (2) when the Wi-Fi communication circuit determines that the received data packet is not AP-to-STA condition, and (3) when the Wi-Fi communication circuit determines that the PHY data rate is neither higher than 256QAM nor has a bandwidth error, the process will enter step 540.

[0056] Step 535 is to utilize the packet retransmission mechanism. Next, step 535 can be summarized as "decoding the received packet based on the decoding result to determine whether to exit the ALPL mode", where the decoding result includes: whether the BSS_color field of the packet matches the network setting of the Wi-Fi communication circuit; by checking the AP-STA flag, whether the received packet is an AP-to-STA condition; and whether the PHY data rate is higher than 256QAM or whether there is a bandwidth error.

[0057] In step 540, the Wi-Fi communication circuit determines whether the MU-RTS (Multi-User Request to Send) frame of the data packet is intended for the Wi-Fi communication circuit (i.e., whether the received data packet is intended for the Wi-Fi communication circuit) and / or the Wi-Fi communication circuit determines whether the MU-RTS frame of the data packet is sent in a bandwidth higher than BW80 (i.e., the second capability).

[0058] In step 540, when (1) the Wi-Fi communication circuit determines that the MU-RTS frame of the data packet is for the Wi-Fi communication circuit or (2) the Wi-Fi communication circuit determines that the MU-RTS frame of the data packet is sent in a bandwidth greater than BW80, the process will enter step 550 to exit the ALPL mode.

[0059] In step 540 , when (1) the Wi-Fi communication circuit determines that the MU-RTS frame of the data packet is not intended for the Wi-Fi communication circuit and (2) the Wi-Fi communication circuit determines that the MU-RTS frame of the data packet is sent in a bandwidth lower than BW80, the process will enter step 545 .

[0060] Step 540 is to utilize the RTS packet retransmission mechanism.

[0061] In step 545, it is determined whether the transmission requirement of the Wi-Fi communication circuit exceeds the transmission requirement threshold. Step 545 is the same as or similar to step 515, so the detailed information of step 545 is omitted here. When the transmission requirement of the Wi-Fi communication circuit does not exceed the transmission requirement threshold (that is, when the transmission requirement of the Wi-Fi communication circuit does not exceed 256QAM or BW80) (when step 545 is no), the process returns to step 535. When the transmission requirement of the Wi-Fi communication circuit exceeds the transmission requirement threshold (that is, when the transmission requirement of the Wi-Fi communication circuit exceeds 256QAM or BW80) (when step 545 is yes), the process will enter step 550 to exit the ALPL mode.

[0062] In step 550, the Wi-Fi communication circuit determines to exit the ALPL mode. That is, when any one of steps 535, 540, and 545 is yes, the Wi-Fi communication circuit determines to exit the ALPL mode. When all of steps 535, 540, and 545 are no, the Wi-Fi communication circuit will remain in the ALPL mode.

[0063] Additionally, after step 550, the ALPL mode is disabled. For example, but not limited to, the ALPL mode is disabled by software.

[0064] Steps 515-550 are performed by hardware.

[0065] Furthermore, the order of steps 515, 520, and 525 is not affected by Figure 5A In other possible embodiments of the application, steps 515, 520, and 525 may be performed in a different order, which is still within the spirit and scope of the application.

[0066] Furthermore, the order of steps 535, 540, and 555 is not affected by Figure 5B In other possible embodiments of the application, steps 535, 540, and 555 may be performed in a different order, which is still within the spirit and scope of the application.

[0067] Figure 6 The local oscillator shift for bandwidth switching in one embodiment of the application is shown. In ALPL mode, sx-table-ALPL is on and sx-table-normal is off, where "sx" refers to the synthesizer; in normal mode, sx-table-ALPL is off and sx-table-normal is on. sx-table-normal includes the settings required for normal mode (such as but not limited to MCS13 (4KQAM)), while sx-table-ALPL includes the settings required for ALPL mode (such as but not limited to MCS 9 (256QAM)). Figure 6 It is also shown that when switching from normal mode to ALPL mode, the center frequency (fc) of the LO (local oscillator) for BW320 is shifted to the center frequency (fc) of the LO for BW80. The LO shift can be, for example but not limited to, 120 MHz.

[0068] In addition, the application Figures 1 to 6 Can be used in combination and this is still within the spirit and scope of the application.

[0069] Figure 7The functional block diagram of the Wi-Fi communication circuit in one embodiment of the application is shown. The Wi-Fi communication circuit 700 according to one embodiment includes an ALPL control circuit 710, a MAC (media access control) circuit 720, a PHY (physical) layer circuit 730, an AFE (analog front end) circuit 740 and an RF (radio frequency) circuit 750. The MAC circuit 720, the PHY layer circuit 730, the AFE circuit 740 and the RF circuit 750 may also be referred to as a Wi-Fi processing circuit 760.

[0070] The ALPL control circuit 710 is connected to the MAC circuit 720, the PHY layer circuit 730, the AFE circuit 740, and the RF circuit 750. The ALPL control circuit 710 is the main core engine for the ALPL control process to enter and exit the ALPL mode in the above and other embodiments. The ALPL control circuit 710 automatically controls the MAC circuit 720, the PHY layer circuit 730, the AFE circuit 740, and the RF circuit 750 in the ALPL mode to save power consumption. For example but not limited to, the PHY layer circuit 730 has two tables, namely, a normal mode bandwidth table (for example but not limited to, BW320 or higher) and an ALPL mode bandwidth table (for example but not limited to, BW80). In the normal mode, under the control of the ALPL control circuit 710, the PHY layer circuit 730 uses the normal mode bandwidth table; in the ALPL mode, under the control of the ALPL control circuit 710, the PHY layer circuit 730 uses the ALPL mode bandwidth table. Likewise, for example but not limited to, the RF circuit 750 has four tables, namely, a normal mode modulation rate table (for example but not limited to, MCS11 or higher), a normal mode bandwidth table (for example but not limited to, BW320 or higher), an ALPL mode modulation rate table (for example but not limited to, MCS9), and an ALPL mode bandwidth table (for example but not limited to, BW80). In the normal mode, under the control of the ALPL control circuit 710, the RF layer circuit 750 uses the normal mode bandwidth table and the normal mode modulation rate table; in the ALPL mode, under the control of the ALPL control circuit 710, the RF layer circuit 750 uses the ALPL mode bandwidth table and the ALPL mode modulation rate table.

[0071] The functions and detailed structures of the MAC circuit 720, the PHY layer circuit 730, the AFE circuit 740, and the RF circuit 750 are not described here.

[0072] According to one embodiment of the present application, the Wi-Fi communication circuit 700 executes the above-mentioned Wi-Fi communication method according to one embodiment of the present application.

[0073] In one embodiment of the present application, the capability of ALPL is enabled and developed to improve Rx listening power consumption (reduce Rx listening power consumption) so as to extend battery life while minimizing the impact on system performance.

[0074] The above mainly describes the solutions provided from the perspective of Wi-Fi communication methods and circuits. It can be understood that in order to implement the above functions, the Wi-Fi communication circuit includes corresponding hardware structures and / or software modules to perform these functions. The technician should easily realize that, in combination with the units and algorithm steps described in the embodiments disclosed in this specification, the present application can be implemented in the form of hardware, or in the form of a combination of hardware and computer software. Whether the function is performed by hardware or by hardware driven by computer software depends on the design constraints of the specific application and technical solution. The technician can use different methods to implement the described functions of each specific application, but this should not be considered to be beyond the scope of this application.

[0075] In one embodiment of the present application, the Wi-Fi communication circuit can be divided into different functional modules or sub-circuits according to the above method examples. For example, each functional module can be divided based on each corresponding function, or two or more functions can be integrated into one processing module. The integrated module can be implemented in the form of hardware or in the form of a software functional module. It should be noted that in the embodiment of the present application, the module division is an example and is only a logical function division. In actual implementation, another division method can be used.

[0076] Although this application may describe many specific details, these should not be understood as limitations on the scope of the claimed invention or the scope that may be claimed, but should be seen as descriptions of features specific to a particular embodiment. Certain functions described in this application may be implemented separately in the context of different embodiments or in combination in a single embodiment. Conversely, various functions described in the context of a single embodiment may also be implemented separately in multiple embodiments or in any suitable sub-combination. In addition, although functions may be described as working in certain combinations or even initially claimed as such, in some cases one or more functions may be deleted from the combination, and the claimed combination may point to a sub-combination or a variation of a sub-combination. Similarly, although operations are shown in a particular order in the drawings, this should not be understood as requiring that the operations be performed in the particular order shown or in sequence, or that all displayed operations be performed to achieve the desired result.

[0077] Only a few examples and implementations are disclosed. Variations, modifications, and enhancements to the described examples and implementations and other implementations may be made based on what is disclosed.

Claims

1. A Wi-Fi communication method for a transceiver device, characterized in that: The Wi-Fi communication method comprises: After a predetermined idle period, switching from a first mode to a second mode, wherein the first mode has a first capability and the second mode has a second capability different from the first capability; After failing to decode a first data packet, switching from the second mode to the first mode; and A second data packet is received and decoded in the first mode, wherein the first data packet is retransmitted as the second data packet.

2. The Wi-Fi communication method according to claim 1, characterized in that: The first capability is represented by a bandwidth of 160 MHz or higher, and / or a modulation rate of modulation coding scheme 11 or higher, and / or a data rate of 1K quadrature amplitude modulation QAM or higher; and The second capability is represented by a bandwidth of 80 MHz, and / or a modulation rate of MCS9, and / or a data rate of 256QAM.

3. The Wi-Fi communication method according to claim 1, characterized in that: After entering the second mode, when a third data packet is correctly decoded and received, the second mode is maintained.

4. A Wi-Fi communication method for a Wi-Fi communication circuit, characterized in that: The Wi-Fi communication method comprises: Entering a second mode from a first mode based at least on a transmission requirement being lower than a transmission requirement threshold and an idle period being longer than an idle period threshold, wherein the first mode has a first capability and the second mode has a second capability different from the first capability; and The second mode is exited based on a decoding result of a received data packet.

5. The Wi-Fi communication method according to claim 4, characterized in that: Entering the second mode is also based on a received data packet not being intended for the Wi-Fi communication circuit.

6. The Wi-Fi communication method according to claim 4, characterized in that: The decoding results include: The basic service set color field of the received data packet matches a network setting of the Wi-Fi communication circuit; Determining that the received data packet is an access point to workstation condition by checking the AP-STA flag; and A data rate is higher than 256 QAM or a bandwidth error occurs.

7. The Wi-Fi communication method according to claim 4, characterized in that: Exiting the second mode is further based on the received data packet being directed to the Wi-Fi communication circuit.

8. The Wi-Fi communication method according to claim 7, characterized in that: Determining that the received data packet is intended for the Wi-Fi communication circuit is based on a multi-user request to send frame in the received data packet being sent in a bandwidth higher than the second capability.

9. A Wi-Fi communication circuit, characterized in that: include: An advanced low-power listening ALPL control circuit; and a Wi-Fi processing circuit connected to the ALPL control circuit, The ALPL control circuit is configured as follows: After a predetermined idle period, switching the Wi-Fi communication circuit from a first mode to a second mode, wherein the first mode has a first capability and the second mode has a second capability different from the first capability; After failing to decode the first data packet, switching the Wi-Fi communication circuit from the second mode to the first mode; as well as A second data packet is received and decoded in the first mode, wherein the first data packet is retransmitted as the second data packet.

10. The Wi-Fi communication circuit according to claim 9, characterized in that: The first capability is represented by a bandwidth of 160 MHz or higher, and / or a modulation rate of modulation coding scheme MCS11 or higher, and / or a data rate of 1K quadrature amplitude modulation QAM or higher; and The second capability is represented by a bandwidth of 80 MHz, and / or a modulation rate of MCS9, and / or a data rate of 256QAM.

11. The Wi-Fi communication circuit according to claim 9, characterized in that: The ALPL control circuit is configured as: After entering the second mode, when a third data packet is correctly decoded and received, the Wi-Fi communication circuit is controlled to remain in the second mode.

12. The Wi-Fi communication circuit according to claim 9, characterized in that: The ALPL control circuit is configured as: Entering a second mode from a first mode based at least on a transmission requirement being lower than a transmission requirement threshold and an idle period being longer than an idle period threshold, the first mode having a first capability and the second mode having a second capability different from the first capability; as well as The second mode is exited based on a decoding result of a received data packet.

13. The Wi-Fi communication circuit according to claim 12, characterized in that: The ALPL control circuit is configured as: Entering the second mode is also based on the received data packet not being intended for the Wi-Fi communication circuit.

14. The Wi-Fi communication circuit according to claim 12, characterized in that: The decoding results include: The basic service set color field of the received fourth data packet matches a network setting of the Wi-Fi communication circuit; Determining that the received data packet is an access point to workstation condition by checking the AP-STA flag; and A data rate is higher than 256 QAM or a bandwidth error occurs.

15. The Wi-Fi communication circuit according to claim 12, characterized in that: The ALPL control circuit is configured as: Exiting the second mode is further based on the received data packet being directed to the Wi-Fi communication circuit.

16. The Wi-Fi communication circuit according to claim 15, characterized in that: The ALPL control circuit is configured to determine that the received data packet is for the Wi-Fi communication circuit based on a multi-user request to send frame in the received data packet being sent in a bandwidth higher than the second capability.

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