Interference reduction method and device for dual-mode chip and electronic equipment

By comparing the NAV value and preset duration in the dual-mode chip, the transmission behavior of WIFI and BLE is controlled, which solves the problem of BLE transmission conflicting with other 2.4G devices and improves the reception efficiency of WIFI and the transmission efficiency of BLE.

CN122069540APending Publication Date: 2026-05-19ZHUHAI HUGE IC CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHUHAI HUGE IC CO LTD
Filing Date
2026-02-28
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

BLE transmission is prone to conflict with other 2.4G devices, causing both to fail to transmit and reducing the efficiency of Wi-Fi transmission.

Method used

By comparing the NAV value of the WiFi module with the preset duration before the start of the Bluetooth connection event, if the NAV value is greater than the preset duration, the BLE connection event is abandoned and WiFi transmission is maintained; if the NAV value is less than or equal to the preset duration, WiFi transmission is interrupted and the BLE frequency is switched. After the switch, the channel status is continuously monitored through the CCA module to control the BLE transmission behavior.

Benefits of technology

It improves the WIFI reception efficiency of the dual-mode chip, reduces invalid frequency switching and transmission conflicts, and enhances the coexistence efficiency of WIFI and BLE.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122069540A_ABST
    Figure CN122069540A_ABST
Patent Text Reader

Abstract

The invention discloses a dual-mode chip interference reduction method, a dual-mode chip interference reduction device and electronic equipment, and relates to the field of Bluetooth and WiFi multiplexing. The method comprises the following steps: acquiring an NAV value in a WiFi module, and comparing the NAV value with a preset duration before a starting point of a Bluetooth connection event; if the NAV value is greater than the preset duration, abandoning the current BLE connection event, and maintaining WIFI transmission; if the NAV value is smaller than or equal to the preset duration, WIFI transmission is interrupted, and switching to a BLE frequency point is carried out; after switching to the BLE frequency point, obtaining the duration of continuously detecting the channel state by the CCA module; and controlling the BLE transmission behavior according to the duration of continuously detecting the channel state by the CCA module. The problems that BLE transmission easily conflicts with other 2.4 G equipment transmission, the BLE transmission and other 2.4 G equipment transmission fail due to mutual influence, and WIFI transmission efficiency is reduced due to the fact that WIFI transmission is frequently interrupted are solved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention relates to the field of Bluetooth and WiFi multiplexing technology, and in particular to a dual-mode chip interference reduction method, apparatus and electronic device. Background Technology

[0002] like Figure 1 As shown, in a dual-mode chip sharing the same 2.4GHz RF for both Wi-Fi and BLE, the RF is used for time-sharing between Wi-Fi and BLE transmission. After the BLE master and slave devices connect, they communicate according to a negotiated connection interval. Each communication constitutes a connection event, and the frequency point is switched once during each communication. Before the BLE connection event time point is reached, the dual-mode chip interrupts Wi-Fi transmission, switches to a specific BLE frequency point according to the frequency hopping algorithm negotiated by the BLE master and slave devices, and waits for the (PLL, LO, RF, and other analog circuits) to stabilize before switching back to BLE transmission. After the BLE connection event is completed, the device switches back to the Wi-Fi frequency point and waits for it to stabilize before resuming Wi-Fi transmission.

[0003] When NAV > 0, it indicates that the air interface channel is detected to be occupied by other Wi-Fi devices, and this device cannot transmit temporarily. NAV = 0 indicates that transmission is possible. The NAV module controls the change of NAV. When the duration of a packet sent by another Wi-Fi device that is not directed to this device is greater than the local NAV value, the duration is assigned as the initial value to NAV, and then it decreases by 1 every 1µs until it reaches 0 and remains constant. It checks whether the current channel is BUSY. If it is BUSY, it means that there is interference on the current air interface channel or other 2.4G devices are communicating. This Wi-Fi device needs to wait for the air interface to be non-BUSY for a period of time (the length depends on the EDCA backoff parameter of different AC channels) before it can transmit Wi-Fi packets. The CCA module completes the air interface channel evaluation and backoff control. The BLE controller does not have an NAV module and a CCA module because BLE does not use the CSMA / CA mechanism of Wi-Fi, and there is no NAV avoidance and CCA detection control.

[0004] In existing technologies, BLE transmission is prone to conflict with the transmission of other 2.4G devices, causing both to fail to transmit, and WIFI transmission is frequently interrupted, resulting in reduced WIFI transmission efficiency. Summary of the Invention

[0005] This invention provides a dual-mode chip interference reduction method, apparatus, and electronic device, which can solve the technical problems in the prior art where BLE transmission easily conflicts with the transmission of other 2.4G devices, causing mutual interference and resulting in the failure of both transmissions, and where WIFI transmission is frequently interrupted, leading to reduced WIFI transmission efficiency. The technical solution is as follows:

[0006] In a first aspect, embodiments of the present invention provide a dual-mode chip interference reduction method, comprising:

[0007] Obtain the NAV value from the WiFi module and compare the NAV value with the preset duration before the start point of the Bluetooth connection event.

[0008] If the NAV value is greater than the preset duration, the current BLE connection event is abandoned, and WIFI transmission is maintained.

[0009] If the NAV value is less than or equal to the preset duration, the WIFI transmission is interrupted and the signal is switched to the BLE frequency.

[0010] After switching to the BLE frequency, the duration for which the CCA module continuously detects the channel status is obtained; the BLE transmission behavior is controlled based on the duration for which the CCA module continuously detects the channel status.

[0011] In some embodiments of the present invention, the preset duration is the sum of the circuit stabilization time for frequency switching and the duration for which the CCA module continuously detects the channel state.

[0012] In some embodiments of the present invention, controlling BLE transmission behavior based on the duration of continuous channel state detection by the CCA module includes:

[0013] If the channel is detected to be idle during the duration that the CCA module continuously monitors the channel status, then Bluetooth transmission is performed.

[0014] If the channel is busy during the period when the CCA module continuously monitors the channel status, Bluetooth transmission is abandoned and the signal is switched back to the WiFi frequency.

[0015] In some embodiments of the present invention, the duration for which the CCA module continuously detects the channel state is determined based on the WiFi short frame interval, device clock deviation, and distance deviation.

[0016] In some embodiments of the present invention, the duration for which the CCA module continuously detects the channel state is longer than the WiFi short frame interval.

[0017] In some embodiments of the present invention, the NAV module of the WIFI controller maintains its original counting logic during Bluetooth transmission.

[0018] In some embodiments of the present invention, it further includes:

[0019] The length of the TX packet and the modulation and coding scheme for WiFi transmission are controlled based on the time remaining until the next Bluetooth connection event.

[0020] Secondly, the present invention also provides a dual-mode chip interference reduction device, comprising:

[0021] The comparison module is used to obtain the NAV value in the WiFi module and compare the NAV value with the preset duration before the start point of the Bluetooth connection event.

[0022] The maintenance module is used to abandon the current BLE connection event and maintain WIFI transmission if the NAV value is greater than the preset duration.

[0023] The switching module is used to interrupt the WIFI transmission and switch to the BLE frequency point if the NAV value is less than or equal to the preset duration.

[0024] The control module is used to obtain the duration of the CCA module's continuous detection of the channel state after switching to the BLE frequency point; and to control the BLE transmission behavior based on the duration of the CCA module's continuous detection of the channel state.

[0025] Thirdly, the present invention also provides an electronic device, comprising: a processor and a memory;

[0026] The memory stores a computer-readable program that can be executed by the processor;

[0027] When the processor executes the computer-readable program, it implements the steps in the dual-mode chip interference reduction method described above.

[0028] Fourthly, the present invention also provides a computer-readable storage medium storing one or more programs that can be executed by one or more processors to implement the steps in the dual-mode chip interference reduction method described above.

[0029] The beneficial effects of the technical solutions provided by some embodiments of the present invention include at least the following: obtaining the NAV value in the WiFi module and comparing the NAV value with a preset duration before the start of the Bluetooth connection event; if the NAV value is greater than the preset duration, abandoning the current BLE connection event and maintaining WiFi transmission; if the NAV value is less than or equal to the preset duration, interrupting WiFi transmission and switching to the BLE frequency; after switching to the BLE frequency, obtaining the duration for which the CCA module continuously detects the channel state; and controlling the BLE transmission behavior according to the duration for which the CCA module continuously detects the channel state. Thus, this application improves the RX efficiency of the dual-mode chip's WiFi by multiplexing the NAV and CCA of WiFi via Bluetooth. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram illustrating the multiplexing of WiFi and Bluetooth in existing technologies.

[0032] Figure 2 This is a system architecture diagram of an embodiment of the dual-mode chip interference reduction method provided by the present invention;

[0033] Figure 3 This is a flowchart of an embodiment of the dual-mode chip interference reduction method provided by the present invention;

[0034] Figure 4 This is a schematic diagram of the dual-mode chip structure for both WIFI and BLE in this invention.

[0035] Figure 5 This is a schematic diagram illustrating the WiFi reconnection functionality of the present invention.

[0036] Figure 6 This is a schematic diagram of frequency switching in this invention;

[0037] Figure 7 This is a schematic diagram of an embodiment of the dual-mode chip interference reduction device provided by the present invention;

[0038] Figure 8 This is a schematic diagram of the operating environment of an embodiment of the electronic device provided by the present invention. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0040] It should be noted that the dual-mode chip interference reduction method provided in this application is generally executed by the terminal device, and correspondingly, the dual-mode chip interference reduction device is generally installed in the terminal device.

[0041] Figure 2 An exemplary system architecture is shown that can be applied to the dual-mode chip interference reduction method or dual-mode chip interference reduction device of this application.

[0042] like Figure 2As shown, the system architecture may include: terminal device 201 and server 202. Terminal device 201 and server 202 can communicate via a network, which serves as the medium for providing communication links between the various units. The network may include various types of wired or wireless communication links, such as: wired communication links including fiber optic cables, twisted-pair cables, or coaxial cables; and wireless communication links including Bluetooth communication links, Wi-Fi communication links, or microwave communication links.

[0043] It should be noted that the terminal device 201 and the server 202 can be either hardware or software. When the terminal device 201 and the server 202 are hardware, they can be implemented as a distributed server cluster consisting of multiple servers, or as a single server. When the terminal device 201 and the server 202 are software, they can be implemented as multiple software programs or software modules (for example, to provide distributed services), or as a single software program or software module; no specific limitations are made here.

[0044] The terminal device of this application can be equipped with various communication client applications, such as video recording applications, video playback applications, voice interaction applications, search applications, instant messaging tools, email clients, social platform software, etc.

[0045] A terminal device can be either hardware or software. When the terminal device is hardware, it can be various terminal devices with a display screen, including but not limited to smartphones, tablets, laptops, and desktop computers. When the terminal device is software, it can be installed on the terminal devices listed above. It can be implemented as multiple software programs or software modules (e.g., used to provide distributed services) or as a single software program or software module; no specific limitation is made here.

[0046] When the terminal device is hardware, it can also be equipped with a display device and a camera. The display device can be any device capable of displaying information, and the camera is used to capture video streams. For example, the display device can be a cathode ray tube display (CR), a light-emitting diode display (LED), an e-ink screen, a liquid crystal display (LCD), a plasma display panel (PDP), etc. Users can use the display device on the terminal device to view displayed text, images, videos, and other information.

[0047] It should be understood that Figure 2The number of terminal devices, networks, and servers shown is for illustrative purposes only. Depending on implementation needs, there can be any number of terminal devices, networks, and servers.

[0048] The following will be combined with the appendix Figure 3 This application provides a detailed description of the dual-mode chip interference reduction method provided in its embodiments. The dual-mode chip interference reduction device in these embodiments can be... Figure 1 The terminal device shown.

[0049] Please see Figure 3 This is a flowchart illustrating a dual-mode chip interference reduction method provided in an embodiment of this application. Figure 3 As shown, the method described in this application embodiment may include the following steps:

[0050] S301. Obtain the NAV value in the WiFi module and compare the NAV value with the preset duration before the start point of the Bluetooth connection event.

[0051] It should be noted that in dual-mode chips (WIFI+BLE), such as Figure 4 As shown, BLE connection events have fixed time intervals, requiring frequency switching for transmission at specific times. In this embodiment, since WIFI and BLE share the 2.4GHz band, if the WIFI channel is occupied by other devices, the NAV module in the WIFI module will detect NAV > 0. Forcing BLE transmission will lead to a conflict. NAV > 0 indicates that the air interface channel is detected to be occupied by (other WIFI devices), and this device cannot transmit temporarily. NAV = 0 indicates that transmission is possible. The NAV module controls NAV changes. When it receives a packet duration from another WIFI device that is not directed to this device, which is greater than the local NAV value, it assigns the duration as the initial value to NAV, and then decreases it by 1 every 1µs until it reaches 0 and remains constant. Therefore, by comparing the NAV value with the preset duration T, the channel occupancy status can be determined in advance, avoiding invalid frequency switching and transmission conflicts.

[0052] It should be noted that this solution reuses the NAV and CCA modules of Wi-Fi, requiring only the addition of simple judgment and control logic, resulting in minimal hardware overhead. For the NAV module, only the NAV count value is used for judgment, without altering the NAV module's behavior (BLE transmission cannot change the Wi-Fi NAV behavior); for the CCA module, because Wi-Fi and BLE transmissions are time-division multiplexed, Wi-Fi and BLE reuse this module in a time-division manner, using different frequency points and CCA durations.

[0053] S302. If the NAV value is greater than the preset duration, then abandon the current BLE connection event and maintain WIFI transmission.

[0054] It should be noted that a judgment is made at time point P, which is T time duration before the start point of the BLE connection event: as Figure 5 shown, if NAV > T: it means that the channel occupancy time declared by other WIFI devices covers the current BLE transmission window, so give up the transmission and continue with the WiFi transmission. At point P, NAV>T indicates that NAV will not count down to 0 during frequency point switching and CCA, that is, the air interface channels declared to be occupied by other WIFI devices overlap with this BLE transmission in the time domain. If this BLE transmission is forced, it is very likely to affect the transmissions of both the current WIFI device that has declared to occupy the air interface, resulting in transmission failures for both. Giving up this BLE transmission avoids this impact.

[0055] S303. If the NAV value is less than or equal to the preset duration, interrupt the WiFi transmission and switch to the BLE frequency point;

[0056] It should be noted that at point P, NAV<=T, as Figure 6 shown, it indicates that NAV will count down to 0 during frequency point switching or CCA, that is, the air interface channels declared to be occupied by other WIFI devices do not overlap with this BLE transmission in the time domain. If the CCA also passes the detection, this BLE transmission can be carried out (even if T1 < NAV <= T but the CCA detection passes, in which case the actual CCA detection shall prevail). If the CCA detection fails, it indicates that the WIFI device that has declared to occupy or other 2.4G devices are still transmitting. At this time, giving up the BLE transmission avoids interference with the current air interface transmission (WIFICCA still needs to be carried out before each WIFI TX).

[0057] S304. After switching to the BLE frequency point, obtain the duration for which the CCA module continuously detects the channel status; control the BLE transmission behavior according to the duration for which the CCA module continuously detects the channel status.

[0058] In this embodiment, obtain the NAV value in the WiFi module, compare the size of the NAV value with the preset duration before the start point of the Bluetooth connection event; if the NAV value is greater than the preset duration, give up the current BLE connection event and maintain the WiFi transmission; if the NAV value is less than or equal to the preset duration, interrupt the WiFi transmission and switch to the BLE frequency point; after switching to the BLE frequency point, obtain the duration for which the CCA module continuously detects the channel status; control the BLE transmission behavior according to the duration for which the CCA module continuously detects the channel status. Thus, this application improves the RX efficiency of the WiFi of the dual-mode chip by multiplexing the NAV and CCA of the WiFi through Bluetooth.

[0059] In some embodiments of the present invention, the preset duration is the sum of the circuit stabilization time for frequency switching and the duration for which the CCA module continuously detects the channel state.

[0060] The preset duration is T, the circuit stabilization time for frequency switching is T1, and the continuous detection duration of CCA is T2. In a specific embodiment, T can be adjusted based on the historical collision rate. If multiple consecutive BLE transmissions are abandoned due to NAV > T, the value of T is automatically increased (e.g., T2 + 5µs) to extend the protection window. Alternatively, T can be adjusted according to the Wi-Fi traffic pattern. When periodic Wi-Fi traffic (such as video streams) is detected, T is adjusted to an integer multiple of that period. This reduces invalid frequency switching, saves power, avoids conflicts with Wi-Fi devices occupying declared channels, and further improves the coexistence efficiency of Wi-Fi and BLE.

[0061] In some embodiments of the present invention, controlling BLE transmission behavior based on the duration of continuous channel state detection by the CCA module includes:

[0062] If the channel is detected to be idle during the duration that the CCA module continuously monitors the channel status, then Bluetooth transmission is performed.

[0063] If the channel is busy during the period when the CCA module continuously monitors the channel status, Bluetooth transmission is abandoned and the signal is switched back to the WiFi frequency.

[0064] Before each BLE connection event occurs, the dual-mode chip interrupts Wi-Fi transmission, switches to a specific BLE frequency according to the frequency hopping algorithm negotiated between the BLE master and slave, and waits for the PLL, LO, RF, and other analog circuits to stabilize before switching back to BLE transmission. The continuous CCA detection duration is T2. In a specific embodiment, T2 is set to SIFS (Wi-Fi frame interval 16µs) + 2µs = 18µs. The minimum Wi-Fi frame interval is SIFS (e.g., the frame interval between DATA and ACK packets). During this period, there is no over-the-air transmission and cca_busy cannot be detected, but the Wi-Fi transmission is not yet complete. To ensure CCA reliability, the frame interval needs to be covered, meaning T2 > SIFS. Additionally, the 2µs is a redundancy sufficient to cover clock and distance deviations between different devices (electromagnetic wave speed * 2µs / 2 (round trip) = within 300m), etc.

[0065] It should be noted that the T2 duration can also be dynamically adjusted based on the Wi-Fi network load. When the Wi-Fi channel is busy, such as when high-frequency NAV updates are detected, the T2 duration is automatically extended, for example, by SIFS+4us, to improve the reliability of CCA detection. When the channel is idle, the T2 duration is shortened to improve BLE transmission efficiency. Alternatively, T2 can be adjusted according to BLE transmission priority. For high-priority BLE data, a conservative detection strategy with a fixed T2=25us is adopted; for low-priority data (such as routine sensor reporting), a fast detection strategy with T2=16us is adopted. The duration for which the CCA module continuously detects the channel status can also be determined based on the Wi-Fi short frame interval, device clock deviation, and distance deviation.

[0066] The following are embodiments of the apparatus described in this application, which can be used to execute the embodiments of the method described in this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the method described in this application.

[0067] Please see Figure 7 This illustration shows a schematic diagram of a dual-mode chip interference reduction device provided in an exemplary embodiment of this application, hereinafter referred to as device 7. Device 7 can be implemented as all or part of a terminal device through software, hardware, or a combination of both. Device 7 includes:

[0068] Comparison module 710 is used to obtain the NAV value in the WiFi module and compare the NAV value with the preset duration before the start point of the Bluetooth connection event;

[0069] The maintenance module 720 is used to abandon the current BLE connection event and maintain WIFI transmission if the NAV value is greater than the preset duration;

[0070] The switching module 730 is used to interrupt the WIFI transmission and switch to the BLE frequency point if the NAV value is less than or equal to the preset duration.

[0071] The control module 740 is used to obtain the duration of the CCA module's continuous detection of the channel state after switching to the BLE frequency point; and to control the BLE transmission behavior according to the duration of the CCA module's continuous detection of the channel state.

[0072] This application also provides a computer storage medium that can store multiple instructions, which are adapted to be loaded and executed by a processor as described above. Figure 3 The method steps of the illustrated embodiment can be found in the following documentation for detailed execution. Figure 3 The specific details of the illustrated embodiments will not be elaborated here.

[0073] This application also provides a computer program product that stores at least one instruction, which is loaded and executed by the processor to implement the dual-mode chip interference reduction method as described in the above embodiments.

[0074] Please see Figure 8 This document provides a schematic diagram of the structure of a terminal device according to an embodiment of this application. Figure 8 As shown, the terminal device 800 may include: at least one processor 801, at least one network interface 804, user interface 803, memory 805, and at least one communication bus 802.

[0075] The communication bus 802 is used to enable communication between these components.

[0076] The user interface 803 may include a display screen and a camera. Optionally, the user interface 803 may also include a standard wired interface and a wireless interface.

[0077] The network interface 804 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface).

[0078] The processor 801 may include one or more processing cores. The processor 801 connects to various parts within the terminal device 800 using various interfaces and lines, and performs various functions and processes data by running or executing instructions, programs, code sets, or instruction sets stored in the memory 805, and by calling data stored in the memory 805. Optionally, the processor 801 may be implemented using at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor 801 may integrate one or a combination of several of the following: Central Processing Unit (CPU), Graphics Processing Unit (GPU), and modem. The CPU primarily handles the operating system, user interface, and applications; the GPU is responsible for rendering and drawing the content required for display; and the modem handles wireless communication. It is understood that the modem may also not be integrated into the processor 801 and may be implemented as a separate chip.

[0079] The memory 805 may include random access memory (RAM) or read-only memory. Optionally, the memory 805 may include a non-transitory computer-readable storage medium. The memory 805 can be used to store instructions, programs, code, code sets, or instruction sets. The memory 805 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as touch function, sound playback function, image playback function, etc.), instructions for implementing the above-described method embodiments, etc.; the data storage area may store data involved in the above-described method embodiments, etc. Optionally, the memory 805 may also be at least one storage device located remotely from the aforementioned processor 801. Figure 8 As shown, the memory 805, which serves as a computer storage medium, may include an operating system, a network communication module, a user interface module, and application programs.

[0080] exist Figure 8 In the terminal device 800 shown, the user interface 803 is mainly used to provide an input interface for the user and to obtain the user's input data; while the processor 801 can be used to call the application program stored in the memory 805 and specifically execute, such as Figure 3 The method shown can be referred to for details. Figure 3 As shown, it will not be elaborated further here.

[0081] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory, or random access memory, etc.

[0082] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A method for reducing interference in a dual-mode chip, characterized in that, include: Obtain the NAV value from the WiFi module and compare the NAV value with the preset duration before the start point of the Bluetooth connection event. If the NAV value is greater than the preset duration, the current BLE connection event is abandoned, and WIFI transmission is maintained. If the NAV value is less than or equal to the preset duration, the WIFI transmission is interrupted and the signal is switched to the BLE frequency. After switching to the BLE frequency, obtain the duration for which the CCA module continuously detects the channel status; The BLE transmission behavior is controlled based on the duration of continuous channel state detection by the CCA module.

2. The dual-mode chip interference reduction method according to claim 1, characterized in that, The preset duration is the sum of the circuit stabilization time for frequency switching and the duration for which the CCA module continuously detects the channel status.

3. The dual-mode chip interference reduction method according to claim 1, characterized in that, The step of controlling BLE transmission behavior based on the duration of continuous channel state detection by the CCA module includes: If the channel is detected to be idle during the duration that the CCA module continuously monitors the channel status, then Bluetooth transmission is performed. If the channel is busy during the period when the CCA module continuously monitors the channel status, Bluetooth transmission is abandoned and the signal is switched back to the WiFi frequency.

4. The dual-mode chip interference reduction method according to claim 1, characterized in that, The duration for which the CCA module continuously detects the channel status is determined based on the WiFi short frame interval, device clock deviation, and distance deviation.

5. The dual-mode chip interference reduction method according to claim 1, characterized in that, The duration for which the CCA module continuously detects the channel status is longer than the WiFi short frame interval.

6. The dual-mode chip interference reduction method according to claim 1, characterized in that, During Bluetooth transmission, the NAV module of the WIFI controller maintains its original counting logic.

7. The dual-mode chip interference reduction method according to claim 1, characterized in that, Also includes: The length of the TX packet and the modulation and coding scheme for WiFi transmission are controlled based on the time remaining until the next Bluetooth connection event.

8. A dual-mode chip interference reduction device, characterized in that, include: The comparison module is used to obtain the NAV value in the WiFi module and compare the NAV value with the preset duration before the start point of the Bluetooth connection event. The maintenance module is used to abandon the current BLE connection event and maintain WIFI transmission if the NAV value is greater than the preset duration. The switching module is used to interrupt the WIFI transmission and switch to the BLE frequency point if the NAV value is less than or equal to the preset duration. The control module is used to obtain the duration for which the CCA module continuously detects the channel status after switching to the BLE frequency point; The BLE transmission behavior is controlled based on the duration of continuous channel state detection by the CCA module.

9. An electronic device, characterized in that, include: Processor and memory; The memory stores a computer-readable program that can be executed by the processor; When the processor executes the computer-readable program, it implements the steps of the dual-mode chip interference reduction method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores one or more programs, which can be executed by one or more processors to implement the steps in the dual-mode chip interference reduction method as described in any one of claims 1-7.