Bridge frequency switching method, bridge and bridge frequency switching system

Abstract

The application provides a bridge frequency switching method, a bridge and a bridge frequency switching system. The method comprises the following steps: obtaining a target parameter corresponding to a first bridge, the target parameter being a parameter related to frequency switching of the first bridge; in the case that it is determined based on the target parameter that frequency switching needs to be performed on the first bridge, sending a switching command to a second processing module in a second bridge, the switching command being used for the second processing module to generate a response signal based on the switching command and control the second bridge to perform frequency switching based on the switching command; receiving the response signal sent by the second processing module and controlling the first bridge to perform frequency switching, the frequency of the first bridge after switching being the same as the frequency of the second bridge after switching. Thus, in the process of signal transmission of the wireless bridge, the wireless bridge working frequency can be automatically adjusted, and the initiation end and the receiving end of the frequency switching can be synchronized to perform frequency switching, thereby improving the distance and stability of the wireless bridge signal transmission.

Description

Technical Field

[0001] This invention relates to the field of wireless bridge technology, and in particular to a bridge frequency switching method, a bridge, and a bridge frequency switching system. Background Technology

[0002] In camera surveillance scenarios, cameras capture video images, which are then transmitted wirelessly to storage devices such as NVRs for storage. If the cameras are installed in locations such as forests, lakes, or cities, the video image data captured by the cameras needs to be transmitted back to the storage devices over long distances.

[0003] Currently, long-distance wireless bridges typically use a single frequency for video image data transmission, such as a single 2.4 GHz band or a single 5.8 GHz band.

[0004] Among them, the 2.4G band signal has weak anti-interference ability, and there are usually many devices using the 2.4G band in the environment. Therefore, if a single 2.4G band is used for video image data transmission, the 2.4G band signal may be interfered with by the 2.4G band signals of other devices, which will affect the signal strength and transmission rate of the 2.4G band signal transmission.

[0005] The 5.8 GHz band has a higher frequency than the 2.4 GHz band, so the 5.8 GHz band signal has weaker penetration ability and is more susceptible to spatial attenuation interference. If the 5.8 GHz band is used to transmit video image data, when there is a lot of obstruction and interference in the transmission environment, it will affect the signal strength and transmission rate of the 5.8 GHz band signal. Summary of the Invention

[0006] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, this invention provides a bridge frequency switching method, a bridge, and a bridge frequency switching system to automatically adjust the operating frequency of the wireless bridge during signal transmission, and to enable synchronous frequency switching between the initiating and receiving ends of the frequency switching, thereby improving the distance and stability of wireless bridge signal transmission.

[0007] This invention provides a bridge frequency switching method, applied to a first processing module in a first bridge, the method comprising:

[0008] Obtain the target parameters corresponding to the first bridge, wherein the target parameters are parameters related to the frequency switching of the first bridge;

[0009] If it is determined that the first bridge needs to be frequency switched based on the target parameters, a switching command is sent to the second processing module in the second bridge. The switching command is used by the second processing module to generate a response signal based on the switching command and to control the second bridge to perform frequency switching based on the switching command.

[0010] The system receives the response signal sent by the second processing module and controls the first bridge to perform frequency switching, wherein the frequency of the first bridge after switching is the same as the frequency of the second bridge after switching.

[0011] In some possible implementations, the first bridge further includes at least two first radio frequency units (RFUs), a first switching switch, and a first antenna. One end of each first RNU is connected to the first processing module, and the first switching switch is connected between the other end of each first RNU and the first antenna. The first processing module is connected to the first switching switch. The frequencies of each first RNU are different. Controlling the first bridge to perform frequency switching includes: when there are two first RNUs, controlling the first switching switch to switch the first RNU connected to the first antenna.

[0012] In some feasible implementations, controlling the first bridge to perform frequency switching further includes: when the number of the first radio frequency units is greater than two, determining the frequency to be switched based on the target parameters; controlling the first switching switch to switch the first radio frequency unit connected to the first antenna, and the frequency of the switched first radio frequency unit is the frequency to be switched.

[0013] In some feasible implementations, the target parameters include at least one of the following: number of collision avoidance attempts, number of co-channel interfering devices, signal strength, packet loss rate, and return packet time; determining that the first bridge needs to be frequency switched based on the target parameters includes: determining that the first bridge needs to be frequency switched when the target parameters meet preset conditions; the preset conditions include at least one of the following: the number of collision avoidance attempts exceeds a preset number, the number of co-channel interfering devices exceeds a preset number, the signal strength is lower than a preset signal strength, the packet loss rate exceeds a preset packet loss rate, and the return packet time exceeds a preset time.

[0014] The present invention also provides another bridge frequency switching method, applied to a second processing module in a second bridge, the method comprising: receiving a switching command sent by a first processing module in a first bridge, the switching command being generated by the first processing module based on target parameters determining that a frequency switch of the first bridge is required; generating a response signal according to the switching command and sending the response signal to the first processing module, the response signal being used by the first processing module to control the first bridge to perform a frequency switch based on the response signal; and controlling the second bridge to perform a frequency switch according to the switching command, wherein the frequency of the first bridge after switching is the same as the frequency of the second bridge after switching.

[0015] In some possible implementations, the second bridge further includes at least two second radio frequency units (RFUs), a second switching switch, and a second antenna. One end of each second RNU is connected to the second processing module, and the second switching switch is connected between the other end of each second RNU and the second antenna. The second processing module is connected to the second switching switch. Each second RNU has a different frequency. Controlling the second bridge to perform frequency switching according to the switching command includes: when there are two second RNUs, controlling the second switching switch to switch the second RNU connected to the second antenna.

[0016] In some possible implementations, the switching command includes a frequency to be switched, and controlling the second bridge to perform frequency switching according to the switching command further includes: when the number of the second radio frequency units is greater than two, controlling the second switching switch to switch the second radio frequency unit connected to the second antenna based on the frequency to be switched, and the frequency of the second radio frequency unit after switching is the frequency to be switched.

[0017] The present invention also provides a bridge, including a first processing module, at least two first radio frequency units, a first switching switch and a first antenna, wherein each of the first radio frequency units has a different frequency, one end of each of the first radio frequency units is connected to the first processing module, the first switching switch is connected between the other end of each of the first radio frequency units and the first antenna, and the first processing module is connected to the first switching switch.

[0018] The present invention also provides another type of bridge, including a second processing module, at least two second radio frequency units, a second switching switch and a second antenna, wherein each second radio frequency unit has a different frequency, one end of each second radio frequency unit is connected to the second processing module, the second switching switch is connected between the other end of each second radio frequency unit and the second antenna, and the second processing module is connected to the second switching switch.

[0019] This invention also provides a bridge frequency switching system, including a first bridge and a second bridge. The first bridge includes a first processing module, and the second bridge includes a second processing module. The first processing module is used to: acquire target parameters corresponding to the first bridge, the target parameters being parameters related to frequency switching of the first bridge; and, if it is determined based on the target parameters that frequency switching of the first bridge is required, send a switching command to the second processing module in the second bridge. The second processing module is used to: receive the switching command sent by the first processing module in the first bridge; generate a response signal according to the switching command; send the response signal to the first processing module; and control the second bridge to perform frequency switching according to the switching command. The first processing module is further used to: receive the response signal sent by the second processing module; and control the first bridge to perform frequency switching, wherein the frequency of the first bridge after switching is the same as the frequency of the second bridge after switching.

[0020] The present invention provides a bridge frequency switching method, bridge, and bridge frequency switching system. By acquiring target parameters corresponding to a first bridge and determining whether frequency switching of the first bridge is necessary based on these parameters, a switching command is sent to a second processing module in the second bridge when frequency switching is required. This causes the second processing module to generate a response signal based on the switching command and control the second bridge to synchronously switch frequencies based on the switching command. After receiving the response signal from the second processing module, the first bridge is then controlled to switch frequencies. This achieves automatic adjustment of the frequency of bridge signal transmission and ensures that the first and second bridges switch frequencies simultaneously. This allows the first and second bridges to quickly establish a connection after switching, reducing packet loss and improving the transmission distance and stability of the wireless bridge signal. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this 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 some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is one of the structural schematic diagrams of the bridge frequency switching system according to an embodiment of the present invention;

[0023] Figure 2 This is a flowchart of the bridge frequency switching method according to the first embodiment of the present invention;

[0024] Figure 3 This is a second schematic diagram of the bridge frequency switching system according to an embodiment of the present invention;

[0025] Figure 4 This is the third schematic diagram of the bridge frequency switching system according to an embodiment of the present invention;

[0026] Figure 5 This is the fourth schematic diagram of the bridge frequency switching system according to an embodiment of the present invention;

[0027] Figure 6 This is a flowchart of the bridge frequency switching method according to the second embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram showing the relationship between the first bridge and the second bridge in a specific embodiment of the present invention;

[0029] Figure 8 This is a flowchart of the bridge frequency switching method according to the third embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the structure of a bridge according to an embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of the structure of a bridge according to another embodiment of the present invention.

[0032] Figure label:

[0033] 110: First bridge; 111: First processing module; 112: First radio frequency unit; 113: First switching switch; 114: First antenna; 115: First DDR memory; 116: First flash memory; 117: First power module; 121: Second processing module; 122: Second radio frequency unit; 123: Second switching switch; 124: Second antenna; 125: Second DDR memory; 126: Second flash memory; 127: Second power module. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0035] For ease of understanding, the bridge frequency switching system of this invention will be described in detail below.

[0036] Figure 1 This is one of the structural schematic diagrams of a bridge frequency switching system according to an embodiment of the present invention. For example... Figure 1As shown, the bridge frequency switching system includes a first bridge 110 and a second bridge 120, wherein the first bridge 110 includes a first processing module 111 and the second bridge 120 includes a second processing module 121.

[0037] The first processing module 111 is used to obtain the target parameters corresponding to the first bridge 110. The target parameters are parameters related to the frequency switching of the first bridge 110. When it is determined that the frequency of the first bridge 110 needs to be switched based on the target parameters, a switching command is sent to the second processing module 121 in the second bridge 120.

[0038] The second processing module 121 is used to receive the switching command sent by the first processing module 111 in the first bridge 110, generate a response signal according to the switching command, send the response signal to the first processing module 111, and control the second bridge 120 to perform frequency switching according to the switching command.

[0039] The first processing module 111 is also used to receive a response signal sent by the second processing module 121 and control the first bridge 110 to perform frequency switching, wherein the frequency of the first bridge 110 after switching is the same as the frequency of the second bridge 120 after switching.

[0040] Therefore, the first processing module 111 obtains the target parameters corresponding to the first bridge 110 and determines whether frequency switching of the first bridge 110 is required based on the target parameters. When the first processing module 111 determines that frequency switching of the first bridge 110 is required, it sends a switching command to the second processing module 121 in the second bridge 120, so that the second processing module 121 generates a response signal based on the switching command and controls the second bridge 120 to synchronously switch frequencies based on the switching command. After receiving the response signal sent by the second processing module 121, the first processing module 111 then controls the first bridge 110 to switch frequencies. This achieves automatic adjustment of the frequency when the bridge transmits signals and ensures that the first bridge 110 and the second bridge 120 switch frequencies simultaneously, enabling the first bridge 110 and the second bridge 120 to quickly complete the connection after switching, reducing the packet loss rate of the transmitted signal, and improving the distance and stability of the wireless bridge signal transmission.

[0041] It should be noted that the first bridge 110 can be a wireless bridge at the frequency switching initiator; the second bridge 120 can be a wireless bridge at the frequency switching receiver.

[0042] Understandably, wireless bridges can be categorized by their operating mode into master bridges and slave bridges. Typically, the wireless bridge receiving signals is designated as the master bridge, and the wireless bridge transmitting signals is designated as the slave bridge. As an example, in a camera surveillance scenario, the camera can connect to the slave bridge, and the recorder (i.e., the monitoring device) can connect to the master bridge. Video image data captured by the camera can be sent to the master bridge via the slave bridge, and the recorder obtains the video image data through the master bridge.

[0043] In this embodiment, the first bridge 110 (i.e., the frequency switching initiator) can be either a master bridge or a slave bridge; similarly, the second bridge 120 can be either a master bridge or a slave bridge.

[0044] Furthermore, the wireless bridge can transmit signals in either point-to-point or point-to-multipoint manner. Point-to-point transmission refers to signal transmission between a master bridge and a slave bridge; point-to-multipoint transmission refers to signal transmission between a master bridge and multiple slave bridges. The bridge frequency switching method of this invention is applicable to both point-to-point and point-to-multipoint transmission methods.

[0045] The structure of the first network bridge 110 will be described in detail below.

[0046] The first processing module 111 in the first bridge 110 can be a System On a Chip (SoC) chip or an MCU processor. No specific restrictions are placed on the device corresponding to the first processing module 111. The first processing module 111 can support 2.4 GHz band, 5.8 GHz band, and sub-1 GHz band, etc.

[0047] In some embodiments, the first processing module 111 may further include a first radio frequency (RF) chip and a first frequency switching processing unit, with the RF chip and the first frequency switching processing unit establishing a communication connection. The first RF chip is primarily used for processing wireless radio frequency signals; the first frequency switching processing unit is primarily used for executing the program corresponding to the bridge frequency switching method of this embodiment. The first RF chip can be a System-on-a-Chip (SoC) chip, and the first frequency switching processing unit can be integrated into the SoC chip or into an MCU processor. No specific limitations are placed on the device corresponding to the first frequency switching processing unit here.

[0048] In this embodiment, the first processing module 111 is used to obtain the target parameters corresponding to the first bridge 110. If it is determined based on the target parameters that the first bridge 110 needs to undergo frequency switching, a switching command is sent to the second processing module 121 in the second bridge 120. The target parameters are parameters related to the frequency switching of the first bridge 110. The first processing module 111 is also used to receive a response signal sent by the second processing module 121, thereby controlling the first bridge 110 to perform frequency switching. The frequency of the first bridge 110 after switching is the same as the frequency of the second bridge 120 after switching.

[0049] In some implementations, the first bridge 110 may further include at least two first radio frequency units 112, a first switching switch 113, a first antenna 114, a first DDR memory 115 (Double Data Rate), a first flash memory 116, and a first power module 117.

[0050] The first processing module 111 establishes communication connections with the first DDR memory 115, the first flash memory 116, and the first power module 117, respectively. The first power module 117 can provide power for the first processing module 111. The first DDR memory 115 and the first flash memory 116 are used to store the data received by the first processing module 111.

[0051] The first radio frequency unit 112 refers to a radio frequency module integrating a power amplifier (PA), a low-noise amplifier (LNA), and a radio frequency switch. One end of each first radio frequency unit 112 is connected to the first processing module 111, and the other end of each first radio frequency unit 112 is connected to the first switching switch 113. In this embodiment, the number of first radio frequency units 112 is at least two; for example, the number of first radio frequency units 112 can be two or three. In this embodiment, the frequencies of each first radio frequency unit 112 are different; the first radio frequency unit 112 can be a 2.4 GHz radio frequency unit, a 5.8 GHz radio frequency unit, or a sub-1 GHz radio frequency unit, etc. As an example, if the number of first radio frequency units 112 is two, then the two first radio frequency units 112 can be a 2.4 GHz radio frequency unit and a 5.8 GHz radio frequency unit, or they can be a 2.4 GHz radio frequency unit and a sub-1 GHz radio frequency unit, etc. It should be noted that the specific number and frequency of the first radio frequency units 112 can be set according to actual needs, and the specific number and frequency of the first radio frequency units 112 are not specifically limited here.

[0052] The first switching switch 113 can be a single-pole double-throw switch, a single-pole triple-throw switch, etc. One end of the first switching switch 113 is connected to each of the first radio frequency devices 112, and the other end of the first switching switch 113 is connected to the first antenna 114. In addition, the control terminal of the first switching switch 113 can be connected to the first processing module 111, that is, the first processing module 111 directly controls the switching process of the first switching switch 113.

[0053] The first antenna 114 can be a directional antenna, capable of transmitting or receiving radio electromagnetic wave signals in at least one specific direction, while transmitting or receiving radio electromagnetic wave signals in other directions is almost zero. In this embodiment, the first antenna 114 is compatible with frequencies such as 2.4G, 5.8G, and sun1G.

[0054] The structure of the second bridge 120 will be described in detail below.

[0055] The second processing module 121 in the second bridge 120 can also be a System On a Chip (SoC) chip or an MCU processor. No specific restrictions are placed on the device corresponding to the second processing module 121 here. The second processing module 121 can support 2.4 GHz band, 5.8 GHz band, and sub-1 GHz band, etc.

[0056] In some embodiments, the second processing module 121 may further include a second radio frequency (RF) chip and a second frequency switching processing unit, with the second RF chip and the second frequency switching processing unit establishing a communication connection. The second RF chip is primarily used for processing wireless radio frequency signals; the second frequency switching processing unit is primarily used for executing the program corresponding to the bridge frequency switching method of this embodiment of the invention. The second RF chip can be a System-on-a-Chip (SoC) chip, and the second frequency switching processing unit can be integrated into the SoC chip or into the MCU processor; no specific limitation is made here regarding the device corresponding to the second frequency switching processing unit.

[0057] In this embodiment, the second processing module 121 is used to receive the switching command sent by the first processing module 111 in the first bridge 110, generate a response signal according to the switching command, send the response signal to the first processing module 111, and control the second bridge 120 to perform frequency switching according to the switching command.

[0058] In some embodiments, the second bridge 120 may further include at least two second radio frequency units 122, a second switching switch 123, a second antenna 124, a second DDR memory 125, a second flash memory 126, and a second power module 127. It should be noted that the number of first radio frequency units 112 in the first bridge 110 may be the same as the number of second radio frequency units 122 in the second bridge 120.

[0059] The second processing module 121 establishes communication connections with the second DDR memory 125, the second flash memory 126, and the second power module 127, respectively. One end of each second radio frequency unit 122 is connected to the second processing module 121, and the other two ends of each second radio frequency unit 122 are connected to the second switching switch 123. The other end of the second switching switch 123 is connected to the second antenna 124. In this embodiment, the frequencies of each second radio frequency unit 122 are different.

[0060] It should be noted that the structure of the second bridge 120 is similar to that of the first bridge 110. For details of the structure of the second bridge 120 not disclosed in this embodiment, please refer to the details disclosed in the structure of the first bridge 110 in this specification embodiment, which will not be repeated here.

[0061] Referring to the structure of the bridge frequency switching system in the above embodiment, the bridge frequency switching method of the present invention will be described in detail below, taking point-to-point transmission as an example.

[0062] Figure 2 This is a flowchart of a bridge frequency switching method according to the first embodiment of the present invention. This bridge frequency switching method is applied to a first processing module in a first bridge, such as... Figure 2 As shown, the bridge frequency switching method may include the following steps:

[0063] Step 210: Obtain the target parameters corresponding to the first bridge.

[0064] Step 220: If it is determined that the first bridge needs to be frequency switched based on the target parameters, a switching command is sent to the second processing module in the second bridge. The switching command is used by the second processing module to generate a response signal based on the switching command and to control the second bridge to perform frequency switching based on the switching command.

[0065] Step 230: Receive the response signal sent by the second processing module and control the first bridge to perform frequency switching. The frequency of the first bridge after switching is the same as the frequency of the second bridge after switching.

[0066] It should be noted that the target parameters are parameters related to the frequency switching of the first bridge, that is, parameters that affect whether the first bridge needs to switch frequencies. For example, target parameters may include the number of co-frequency interfering devices around the first bridge, the number of collision avoidance attempts when the first bridge transmits radio frequency signals, the signal strength of the radio frequency signals received by the first bridge, etc.

[0067] The first processing module can obtain the target parameters corresponding to the first bridge in one of the following ways: by obtaining them from the status detection process (e.g., the Wi-Fi status monitoring process) running in the first processing module. Alternatively, the first processing module can obtain the target parameters by manually inputting them into the first processing module.

[0068] After obtaining the target parameters, the first processing module determines whether the first bridge needs to be frequency switched based on the target parameters.

[0069] As an example, if the first bridge currently uses the 2.4GHz frequency band, and the anti-interference capability of the 2.4GHz frequency band radio frequency signal is relatively weak, then the number of co-frequency interfering devices around the first bridge can be used as a target parameter to determine whether the first bridge needs to be frequency-switched. In this example, the number of co-frequency interfering devices around the first bridge can be manually input into the first processing module; after obtaining the number of co-frequency interfering devices, if the first processing module determines that the number of co-frequency interfering devices exceeds a preset number, the first processing module can determine that the first bridge needs to be frequency-switched. The preset number can be the minimum number of co-frequency interfering devices that significantly affect the transmission of radio frequency signals, and the preset number can be set manually.

[0070] As another example, if the number of collision avoidances when the first bridge transmits wireless radio frequency signals is used as the target parameter, the number of collision avoidances can be obtained from the status detection process (e.g., the Wi-Fi status monitoring process) running in the first processing module. After obtaining the number of collision avoidances, the first processing module can determine whether frequency switching of the first bridge is necessary based on whether the number of collision avoidances per unit time exceeds a preset number. The preset number can be the minimum number of collision avoidances that significantly affect the wireless radio frequency signal transmission process, and the preset number can be set manually.

[0071] If, based on the target parameters, it is determined that a frequency switch needs to be performed on the first bridge, the first processing module can first send a switching command to the second processing module in the second bridge. The switching command may include the address information of the first bridge, the frequency switching command, the frequency to be switched, etc.

[0072] As an example, if the switching command sent by the first processing module is to switch from the 2.4 GHz band to the 5.8 GHz band, the format of the switching command can be: Protocol header (start field) 0XFF, address information of the first bridge 0XAA, frequency switching command 0XBB, and frequency information to be switched to 0X01. If the switching command sent by the first processing module is to switch from the 5.8 GHz band to the 2.4 GHz band, the format of the switching command can be: Protocol header (start field) 0XFF, address information of the first bridge 0XAA, frequency switching command 0XBB, and frequency information to be switched to 0X00. For details, please refer to Tables 1 and 2. Table 1 shows the format of the switching command from the 2.4 GHz band to the 5.8 GHz band, and Table 2 shows the format of the switching command from the 5.8 GHz band to the 2.4 GHz band.

[0073] Table 1 shows the format of the switching command from the 2.4 GHz band to the 5.8 GHz band.

[0074] 0XFF 0XAA 0XBB 0X01

[0075] Table 2 shows the format of the switching command from the 5.8 GHz band to the 2.4 GHz band.

[0076] 0XFF 0XAA 0XBB 0X00

[0077] After receiving the switching command, the second processing module of the second bridge generates a response signal based on the switching command and feeds the response signal back to the first processing module. Simultaneously, the second processing module can control the second bridge to perform frequency switching according to the switching command while feeding the response signal back to the first processing module.

[0078] The response signal may include the address information of the second bridge, the frequency switching command, the frequency to be switched, and response information, etc. As an example, if the switching command sent by the first processing module is to switch from the 2.4 GHz band to the 5.8 GHz band, the data format of the response signal can be: protocol header (start field) 0XFF, address information of the first bridge 0XAA, frequency switching command 0XBB, frequency to be switched information 0X01, and response information 0X10 (a response information of 0X10 indicates that the second processing module has correctly received the switching command). For details, please refer to Table 3.

[0079] Table 3 shows the format of the response signal when switching from the 2.4 GHz band to the 5.8 GHz band.

[0080]

[0081] If the first processing module receives a response signal from the second processing module after a period of time after sending the switching command, the first processing module will determine that the second processing module has accurately received the switching command. At this time, the first processing module will then control the first bridge to perform frequency switching.

[0082] Understandably, during bridge frequency switching, if the first bridge has already switched frequencies while the second bridge has not, the first bridge will be unable to detect the wireless radio frequency signal transmitted by the second bridge. The first bridge will mistakenly believe that the signal is poor, causing a disconnect between the first and second bridges, which may result in packet loss of the video image data received by the first bridge.

[0083] In this embodiment, the second processing module sends a response signal to the first processing module, and the first processing module performs frequency switching on the first bridge after receiving the response signal. The data volume of the switching command and the response signal is much smaller than the data volume of the video image data, thereby ensuring that the first and second bridges perform frequency switching almost simultaneously. This allows the first and second bridges to quickly complete the connection after frequency switching, reducing the packet loss rate of the video image data. Furthermore, the connection speed of the first and second bridges after frequency switching can be further improved by adjusting the sending priority of the switching command and response signal, allowing the first bridge to send the switching command first and the second bridge to send the response signal first.

[0084] As an example, if both the first and second bridges are currently transmitting signals in the 2.4 GHz band, the first processing module determines, based on target parameters, that it needs to switch from the 2.4 GHz band to the 5.8 GHz band. In this case, the first processing module first generates a switching command based on the desired 5.8 GHz frequency and then transmits the switching command to the second processing module. The second processing module generates a response signal based on the switching command and sends the response signal to the first processing module, while simultaneously controlling the second bridge to switch its frequency to the 5.8 GHz band. After receiving the response signal, the first processing module controls the first bridge to switch to the 5.8 GHz band.

[0085] refer to Figure 1 In some embodiments, the first bridge further includes at least two first radio frequency units (RFUs), a first switching switch, and a first antenna. One end of each first RNU is connected to the first processing module, the first switching switch is connected between the other end of each first RNU and the first antenna, and the first processing module is connected to the first switching switch.

[0086] The frequencies of the first radio frequency units (RFUs) vary. The first RFU can be a 2.4GHz RFU, a 5.8GHz RFU, or a sub-1GHz RFU, etc. For example, if there are two first RFUs, they can be a 2.4GHz RFU and a 5.8GHz RFU, or a 2.4GHz RFU and a sub-1GHz RFU, etc. It should be noted that the specific number and frequency of the first RFUs can be set according to actual needs; no specific limitations are imposed on the number and frequency of the first RFUs here.

[0087] The specific process of the first processing module sending the switching command to the second processing module can be as follows: the first processing module first sends the switching command to the first radio frequency unit, the first radio frequency unit then sends the switching command to the first antenna, and finally the first antenna sends it to the second processing module of the second bridge.

[0088] The specific process of the first processing module receiving the response signal can be as follows: the first antenna first receives the response signal sent by the second processing module of the second bridge, the first antenna then sends the response signal to the first radio frequency unit, and the first radio frequency unit then sends the response signal to the first processing module.

[0089] In some implementations, controlling the first bridge to perform frequency switching in step 230 includes: when there are two first radio frequency units, controlling the first switching switch to switch the first radio frequency unit connected to the first antenna.

[0090] Figure 3 This is a second schematic diagram of the bridge frequency switching system according to an embodiment of the present invention. Figure 3 As shown, the first bridge has two first radio frequency units, and similarly, the second bridge also has two second radio frequency units. For details, refer to... Figure 3 When there are two first radio frequency units (RFUs), the first processing module can directly control the first switching switch to switch from the current first RFU to the other first RFU. At this time, the first antenna establishes a connection with the other first RFU, thereby completing the frequency switching process of the first bridge.

[0091] In some implementations, step 230, controlling the first bridge to perform frequency switching, further includes: if the number of first radio frequency units is greater than two, determining the frequency to be switched based on target parameters; controlling the first switching switch to switch the first radio frequency unit connected to the first antenna, and the frequency of the first radio frequency unit after switching is the frequency to be switched.

[0092] refer to Figure 1Specifically, the first processing module can first determine the frequency to be switched based on the target parameters. For example, if the current frequency of the first bridge is the 2.4 GHz band, and the target parameter is the number of interfering devices operating at the same frequency around the first bridge, the first processing module determines that the number of interfering devices is too large, affecting the transmission of the 2.4 GHz wireless radio frequency signal. In this case, the first processing module can determine that the frequency needs to be switched from the 2.4 GHz band to the 5.8 GHz band (the anti-interference capability of the 5.8 GHz band is greater than that of the 2.4 GHz band), thus determining the frequency to be switched.

[0093] After the first processing module determines the frequency to be switched, it controls the first switching switch to switch to the first radio frequency unit corresponding to the frequency to be switched.

[0094] In some embodiments, the first processing module may comprise two parts: a first radio frequency (RF) chip and a first frequency switching processing unit. The first RF chip and the first frequency switching processing unit establish a communication connection, with one end of each first radio frequency unit connected to the first RF chip. The first RF chip is primarily used for processing wireless radio frequency signals; the first frequency switching processing unit is primarily used for executing the program corresponding to the bridge frequency switching method of this embodiment.

[0095] It should be noted that the first RF chip can be a SOC chip, and the first frequency switching processing unit can be integrated into the SOC chip or into the MCU processor. No specific limitation is made here on the device corresponding to the first frequency switching processing unit.

[0096] The specific process of the first processing module sending the switching command to the second processing module can also be as follows: the first frequency switching processing unit generates the switching command and sends the switching command to the first radio frequency chip; the first radio frequency chip then sends the switching command to the first radio frequency unit, the first radio frequency unit then sends the switching command to the first antenna, and finally the first antenna sends it to the second processing module of the second bridge.

[0097] The specific process of the first processing module receiving the response signal can also be as follows: the first antenna first receives the response signal sent by the second processing module of the second bridge, the first antenna then sends the response signal to the first radio frequency unit, the first radio frequency unit then sends the response signal to the first radio frequency chip, and the first radio frequency chip then sends the response signal to the first frequency switching processing unit.

[0098] In some implementations, the control terminal of the first switching switch can be connected to the first frequency switching processing unit. In this case, the first switching switch can be directly controlled by the first frequency switching processing unit. The specific control method can be referred to the control method of the first processing module on the first switching switch in the foregoing embodiment, which will not be repeated here.

[0099] In some implementations, the control terminal of the first switching switch can be connected to the first radio frequency chip. In this case, the first frequency switching processing unit controls the first switching switch through the first radio frequency chip. The following two examples describe the specific process by which the first frequency switching processing unit controls the first switching switch through the first radio frequency chip.

[0100] Example 1, Figure 4 This is the third schematic diagram of the bridge frequency switching system according to an embodiment of the present invention. Figure 4 As shown, when there are two first radio frequency units, the process of controlling the first bridge to perform frequency switching can be as follows: the first frequency switching processing unit first sends a frequency switching signal to the first radio frequency chip, and the first radio frequency chip then controls the first switching switch according to the frequency switching signal, so that the first switching switch switches from the current first radio frequency unit to another first radio frequency unit.

[0101] Example 2, Figure 5 This is the fourth structural schematic diagram of the bridge frequency switching system according to an embodiment of the present invention. Figure 5 As shown, when there are two or more first radio frequency units, the process of controlling the first bridge to perform frequency switching can be as follows: the first frequency switching processing unit can first determine the frequency to be switched according to the target parameters, and then generate a frequency switching signal according to the frequency to be switched and send it to the first radio frequency chip; the first radio frequency chip then controls the first switching switch according to the frequency to be switched in the frequency switching signal, so that the first switching switch switches to the first radio frequency unit corresponding to the frequency to be switched.

[0102] In some implementations, the target parameters include at least one of the following: number of collision avoidance attempts, number of co-channel interfering devices, signal strength, packet loss rate, and return packet time. Step 220, determining the need for frequency switching of the first bridge based on the target parameters, includes: determining that frequency switching of the first bridge is necessary if the target parameters meet preset conditions. The preset conditions include at least one of the following: the number of collision avoidance attempts exceeds a preset number, the number of co-channel interfering devices exceeds a preset number, the signal strength is lower than a preset signal strength, the packet loss rate exceeds a preset packet loss rate, and the return packet time exceeds a preset time. It should be noted that the target parameters and the preset conditions are in a corresponding relationship.

[0103] It's understandable that devices will actively avoid collisions when signals of the same frequency are present in the environment. Therefore, the number of collision avoidances by the first bridge can be used to determine the interference situation in the current environment. The first processing module of the first bridge typically runs a status monitoring process, which records the collision avoidance status of the first bridge. For example, if the first processing module runs a Wi-Fi status monitoring process, it can obtain the number of collision avoidances at the Wi-Fi protocol layer.

[0104] When the target parameter is the number of collision avoidances when the first bridge transmits wireless radio frequency signals, the first processing module obtains the number of collision avoidances within a preset time period from the status monitoring process. When the first processing module determines that the number of collision avoidances exceeds the preset number, it can determine that the first bridge needs to perform a frequency switch. It should be noted that the preset number can be the minimum number of collision avoidances that significantly affect the wireless radio frequency signal transmission process within the preset time period, and the preset number can be set manually.

[0105] As an example, if the preset time period is set to 1 minute and the preset number of times is set to 10, and the first processing module obtains 12 conflict avoidance times at the Wi-Fi protocol layer, it indicates that the interference in the current environment where the first bridge is located is relatively strong, and thus the first processing module determines that the first bridge needs to switch frequencies.

[0106] When the target parameter is the number of co-frequency interfering devices around the first bridge, this number can be manually input into the first processing module. After receiving the number of co-frequency interfering devices, the first processing module can determine whether a frequency switch for the first bridge is needed by checking if the number exceeds a preset number. If the first processing module determines that the number of co-frequency interfering devices exceeds the preset number, it can then determine that a frequency switch for the first bridge is necessary. The preset number can be the minimum number of co-frequency interfering devices that significantly impact the wireless radio frequency signal transmission process, and this preset number can be set manually.

[0107] As an example, if the preset number is 20, and the first processing module obtains 50 co-channel interfering devices, then the first processing module determines that the first bridge needs to be frequency switched.

[0108] When the target parameter is the signal strength of the wireless radio frequency signal received by the first bridge, a signal strength detection device can be set in the first bridge. The first processing module can obtain the signal strength of the received signal from the signal strength detection device. After obtaining the signal strength, the first processing module can determine whether frequency switching of the first bridge is required by judging whether the signal strength is lower than a preset signal strength. If the first processing module determines that the signal strength is lower than the preset signal strength, it can determine that frequency switching of the first bridge is required. The preset signal strength can be the lowest signal strength that significantly affects the wireless radio frequency signal transmission process, and the preset signal strength can be set manually.

[0109] When the target parameter is packet loss rate, the first processing module can obtain the packet loss rate of the first bridge from the status monitoring process. After obtaining the packet loss rate, the first processing module can determine whether frequency switching of the first bridge is necessary by judging whether the packet loss rate exceeds a preset packet loss rate. If the first processing module determines that the packet loss rate exceeds the preset packet loss rate, it can determine that frequency switching of the first bridge is necessary at this time. The preset packet loss rate can be the minimum packet loss rate that has a significant impact on the wireless radio frequency signal transmission process, and the preset packet loss rate can be set manually.

[0110] When the target parameter is the return packet time, the first processing module can obtain the return packet time from the status monitoring process. After obtaining the return packet time, the first processing module can determine whether a frequency switch is needed for the first bridge by checking if the return packet time exceeds a preset time. If the first processing module determines that the return packet time exceeds the preset time, it can then determine that a frequency switch is needed for the first bridge. The preset time can be the maximum time for receiving return packets, and the preset time can be set manually.

[0111] As an example, the first bridge sends a request or command to the second bridge, and the second bridge needs to return a response to the first bridge. If the preset time is set to 2 minutes, after the first bridge sends a radio frequency signal to the second bridge, the first processing module of the first bridge can record the timestamp of the radio frequency signal transmission. If, after 2 minutes, the first bridge has not received a response signal from the second bridge, it will determine that packet loss has occurred. At this point, the first processing module determines that the first bridge needs to perform a frequency switch.

[0112] Therefore, the first processing module determines whether the first bridge needs to switch frequencies based on the target parameters, and when the first bridge needs to switch frequencies, it controls the first bridge to perform the frequency switch, thereby automatically adjusting the frequency of the bridge's signal transmission and improving the transmission distance and stability of long-distance wireless bridges. Furthermore, the second processing module sends a response signal to the first processing module, and the first processing module switches the frequency of the first bridge only after receiving the response signal. This ensures that the first and second bridges switch frequencies almost simultaneously, allowing the first and second bridges to quickly establish a connection after the frequency switch, reducing the packet loss rate of video image data.

[0113] The above describes the bridge frequency switching steps for point-to-point transmission. The following describes the bridge frequency switching method of this invention in a point-to-multipoint transmission mode (i.e., one master bridge and multiple slave bridges), with the first bridge being the master bridge and the second bridge being the slave bridge.

[0114] Figure 6 This is a flowchart of a bridge frequency switching method according to the second embodiment of the present invention. Figure 6 As shown, the bridge frequency switching method may further include:

[0115] Step 610: Obtain the target parameters corresponding to the first bridge.

[0116] Step 620: If it is determined that the first bridge needs to be frequency switched based on the target parameters, a switching command is broadcast to the second processing module in each second bridge. The switching command is used by the second processing module to generate a response signal based on the switching command and to control the second bridge to perform frequency switching based on the switching command.

[0117] Step 630: Receive the response signals sent by each of the second processing modules, and control the first bridge to perform frequency switching. The frequency of the first bridge after switching is the same as the frequency of each of the second bridges after switching.

[0118] Specifically, the first processing module obtains the target parameters corresponding to the first bridge. The target parameters include at least one of the following: number of collision avoidance attempts, number of co-channel interfering devices, signal strength, packet loss rate, and return packet time. When the first processing module determines that the first bridge needs to be frequency switched based on the target parameters, the first processing module broadcasts a switching command to each of the second bridges.

[0119] Upon receiving a handover command, the second processing module in each second bridge generates a response signal based on the command, and then feeds this response signal back to the first processing module. Each second processing module also controls the corresponding second bridge to perform frequency switching based on the handover command.

[0120] After receiving all the response signals from the second processing modules, the first processing module controls the first bridge to perform frequency switching.

[0121] It should be noted that for details not disclosed in the bridge frequency switching method of this embodiment, please refer to the details disclosed in the embodiment of the bridge frequency switching method in the first embodiment of this specification, which will not be repeated here.

[0122] In some implementations, in a point-to-multipoint (i.e., one master bridge and multiple slave bridges) transmission mode, if the first bridge is a slave bridge and the second bridge is the master bridge, then the first bridge (slave bridge) determines whether it needs to perform a frequency switch. If a frequency switch is required, the second bridge (master bridge) broadcasts the switch command so that the other slave bridges can simultaneously perform a frequency switch according to the switch command.

[0123] Figure 7 This is a schematic diagram illustrating the relationship between the first bridge and the second bridge in a specific embodiment of the present invention. As an example, such as... Figure 7As shown, the slave bridges are slave bridge 1, slave bridge 2, slave bridge 3, and slave bridge 4, where slave bridge 1 is the first bridge and master bridge A is the second bridge. When the first processing module of slave bridge 1 determines that a frequency switch is needed for slave bridge 1 based on the target parameters, the first processing module will send a switch command to the second processing module of master bridge A.

[0124] When the second processing module of the main bridge A receives the handover command, it broadcasts the command so that slave bridges 2, 3, and 4 also receive it. Upon receiving the handover command, the internal processing modules of slave bridges 2, 3, and 4 generate response signals and feed them back to the second processing module of the main bridge A. Simultaneously, slave bridges 2, 3, and 4 also perform frequency switching based on the handover command.

[0125] After receiving response signals from slave bridges 2, 3, and 4, the second processing module of master bridge A will also generate a response signal and send it back to the first processing module of slave bridge 1. Simultaneously, the second processing module of master bridge A will control master bridge A to perform frequency switching.

[0126] After receiving the response signal from the second processing module of the master bridge A, the first processing module of the slave bridge 1 will control the slave bridge 1 to perform frequency switching.

[0127] It should be noted that for details not disclosed in the bridge frequency switching method of this embodiment, please refer to the details disclosed in the embodiment of the bridge frequency switching method in the first embodiment of this specification, which will not be repeated here.

[0128] Figure 8 This is a flowchart of a bridge frequency switching method according to a third embodiment of the present invention. This bridge frequency switching method is applied to the second processing module in a second bridge, such as... Figure 8 As shown, the bridge frequency switching method may include the following steps:

[0129] Step 810: Receive the switching command sent by the first processing module in the first bridge. The switching command is generated by the first processing module based on the target parameters when it is determined that the first bridge needs to be switched in frequency.

[0130] Step 820: Generate a response signal according to the switching command and send the response signal to the first processing module. The response signal is used by the first processing module to control the first bridge to perform frequency switching based on the response signal.

[0131] Step 830: Control the second bridge to perform frequency switching according to the switching command. The frequency of the first bridge after switching is the same as the frequency of the second bridge after switching.

[0132] Specifically, when the first processing module determines that a frequency switch needs to be performed on the first bridge based on the target parameters, the first processing module generates a switching command and sends the switching command to the second processing module of the second bridge. It should be noted that the target parameters include at least one of the following: number of collision avoidance attempts, number of co-channel interfering devices, signal strength, packet loss rate, and packet return time.

[0133] After receiving the switching command, the second processing module generates a response signal based on the command. This response signal indicates that the second processing module has correctly received the switching command, and it feeds the response signal back to the first processing module of the first bridge. Only after receiving the response signal will the first processing module control the first bridge to perform frequency switching.

[0134] It should be noted that the switching command may include the address information of the first bridge, the frequency switching command, the frequency to be switched, and so on. The response signal may include the address information of the second bridge, the frequency switching command, the frequency to be switched, and response information, etc.

[0135] The second processing module can generate a response signal based on the switching command and simultaneously control the second bridge to perform frequency switching based on the switching command. Alternatively, the second processing module can send a response signal to the first processing module and then control the second bridge to perform frequency switching based on the switching command. The execution order of steps 820 and 830 is not specifically limited here.

[0136] refer to Figure 1 In some embodiments, the second bridge further includes at least two second radio frequency units, a second switching switch, and a second antenna. One end of each second radio frequency unit is connected to the second processing module, the second switching switch is connected between the other end of each second radio frequency unit and the second antenna, and the second processing module is connected to the second switching switch.

[0137] The frequencies of the second radio frequency units are different. The second radio frequency unit can be a 2.4G radio frequency unit, a 5.8G radio frequency unit, or a sub-1G radio frequency unit, etc. The frequency of the second radio frequency unit can be the same as the frequency setting of the first radio frequency unit.

[0138] The specific process of the second processing module receiving the switching command sent by the first processing module can be as follows: the second line first receives the switching command sent by the first processing module of the first bridge, the second line then sends the switching command to the second radio frequency unit, and the second radio frequency unit then sends the switching command to the second processing module.

[0139] The specific process of the second processing module sending a response signal to the first processing module can be as follows: the second processing module first sends the response signal to the second radio frequency device, the second radio frequency device then sends the response signal to the second antenna, and finally the second antenna sends it to the first processing module of the first bridge.

[0140] In some implementations, step 630, controlling the second bridge to perform frequency switching according to the switching command, includes: when there are two second radio frequency units, controlling the second switching switch to switch the second radio frequency unit connected to the second antenna.

[0141] Specifically, refer to Figure 3 When there are two second radio frequency units (RFUs), the second processing module can directly control the second switching switch to switch from the current second RFU to another second RFU. At this time, the second antenna establishes a connection with the other second RFU, thereby completing the frequency switching process of the second bridge.

[0142] In some implementations, the switching command includes the frequency to be switched. Step 630, which controls the second bridge to perform frequency switching according to the switching command, further includes: when the number of second radio frequency units is greater than two, controlling the second switching switch to switch the second radio frequency unit connected to the second antenna based on the frequency to be switched, and the frequency of the second radio frequency unit after switching is the frequency to be switched.

[0143] refer to Figure 1 Specifically, after the first processing module determines the frequency to be switched based on the target parameters, it can generate a switching command based on the frequency. Upon receiving the switching command, the second processing module parses it to obtain the information about the frequency to be switched. Then, based on the frequency to be switched, the second processing module controls the second switching switch to switch to the second radio frequency unit corresponding to that frequency.

[0144] In some embodiments, the first processing module may comprise two parts: a first radio frequency (RF) chip and a first frequency switching processing unit. The first RF chip and the first frequency switching processing unit establish a communication connection, with one end of each first radio frequency unit connected to the first RF chip. The first RF chip is primarily used for processing wireless radio frequency signals; the first frequency switching processing unit is primarily used for executing the program corresponding to the bridge frequency switching method of this embodiment.

[0145] The specific process of the second processing module receiving the switching command sent by the first processing module can also be as follows: the second line first receives the switching command sent by the first processing module of the first bridge, the second line then sends the switching command to the second radio frequency unit, the second radio frequency unit then sends the switching command to the second radio frequency chip, and the second radio frequency chip then sends the switching command to the second frequency switching processing unit.

[0146] The specific process of the second processing module sending a response signal to the first processing module can also be as follows: the second frequency switching processing unit generates a response signal and sends the response signal to the second radio frequency chip; the second radio frequency chip then sends the response signal to the second radio frequency unit, the second radio frequency unit then sends the response signal to the second antenna, and finally the second antenna sends it to the first processing module of the first bridge.

[0147] In some implementations, the control terminal of the second switching switch can be connected to the second frequency switching processing unit, which can directly control the second switching switch. The method by which the second frequency switching processing unit controls the second switching switch can be referenced from the control method of the second processing module on the second switching switch in the aforementioned embodiments, and will not be repeated here.

[0148] In some implementations, the control terminal of the second switching switch can be connected to the second radio frequency chip. In this case, the second frequency switching processing unit controls the second switching switch through the second radio frequency chip. The following two examples will further describe the specific process by which the second frequency switching processing unit controls the second switching switch through the second radio frequency chip.

[0149] Example 1, for reference Figure 4 When there are two second radio frequency units, the process of controlling the second bridge to switch frequencies can be as follows: the second frequency switching processing unit first sends a frequency switching signal to the second radio frequency chip, and the second radio frequency chip then controls the second switching switch according to the frequency switching signal, so that the second switching switch switches from the current second radio frequency unit to another second radio frequency unit.

[0150] Example 2, see reference Figure 5 When there are two or more second radio frequency units (RFUs), the process of controlling the second bridge to perform frequency switching can be as follows: After receiving a switching command, the second frequency switching processing unit parses the command to obtain the information of the frequency to be switched. The second frequency switching processing unit then generates a frequency switching signal based on the frequency to be switched and sends it to the second RF chip. The second RF chip then controls the second switching switch according to the frequency to be switched in the frequency switching signal, causing the second switching switch to switch to the second RFU corresponding to the frequency to be switched.

[0151] It should be noted that for details not disclosed in the bridge frequency switching method of this embodiment, please refer to the details disclosed in the embodiment of the bridge frequency switching method in the first embodiment of this specification, which will not be repeated here.

[0152] Figure 9 This is a schematic diagram of the structure of a bridge according to an embodiment of the present invention.

[0153] like Figure 9As shown, the bridge includes a first processing module 111, at least two first radio frequency units 112, a first switching switch 113, and a first antenna 114. Each first radio frequency unit 112 has a different frequency. One end of each first radio frequency unit 112 is connected to the first processing module 111, one end of the first switching switch 113 is connected to the other end of each first radio frequency unit 112, and the other end of the first switching switch 113 is connected to the first antenna 114. The first processing module 111 is connected to the first switching switch 113.

[0154] In some embodiments, the bridge further includes a first DDR memory 115, a first flash memory 116, and a first power module 117. The first processing module 111 establishes communication connections with the first DDR memory 115, the first flash memory 116, and the first power module 117, respectively. The first power module 117 can provide operating power to the first processing module 111. The first DDR memory 115 and the first flash memory 116 are used to store data received by the first processing module 111.

[0155] It should be noted that for details not disclosed in the bridge in this embodiment, please refer to the details disclosed in the embodiments of the bridge frequency switching system or the bridge frequency switching method in this specification, which will not be repeated here.

[0156] Figure 10 This is a schematic diagram of the structure of a bridge according to another embodiment of the present invention.

[0157] like Figure 10 As shown, the bridge includes a second processing module 121, at least two second radio frequency units 122, a second switching switch 123, and a second antenna 124. Each second radio frequency unit 122 has a different frequency. One end of each second radio frequency unit 122 is connected to the second processing module 121. The second switching switch 123 is connected between the other end of each second radio frequency unit 122 and the second antenna 124. The second processing module 121 is connected to the second switching switch 123.

[0158] In some embodiments, the bridge further includes a second DDR memory 125, a second flash memory 126, and a second power module 127. The second processing module 121 establishes communication connections with the second DDR memory 125, the second flash memory 126, and the second power module 127, respectively. The second power module 127 provides operating power to the second processing module 121, and the second DDR memory 125 and the second flash memory 126 are used to store data received by the second processing module 121.

[0159] It should be noted that for details not disclosed in the bridge in this embodiment, please refer to the details disclosed in the embodiments of the bridge frequency switching system or the bridge frequency switching method in this specification, which will not be repeated here.

[0160] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bridge frequency switching method, characterized in that, The method, applied to a first processing module in a first bridge, includes: Obtain the target parameters corresponding to the first bridge. The target parameters are parameters related to the frequency switching of the first bridge. The target parameters include at least one of the following: number of collision avoidance attempts, number of co-channel interfering devices, signal strength, packet loss rate, and packet return time. If it is determined based on the target parameters that the first bridge needs to be frequency switched, a switching command is sent to the second processing module in the second bridge. The switching command is used by the second processing module to generate a response signal based on the switching command and to control the second bridge to perform frequency switching based on the switching command. Both the first bridge and the second bridge are wireless bridges and are connected to each other via wireless communication. The system receives the response signal sent by the second processing module and controls the first bridge to perform frequency switching, wherein the frequency of the first bridge after switching is the same as the frequency of the second bridge after switching.

2. The bridge frequency switching method according to claim 1, characterized in that, The first bridge also includes at least two first radio frequency units, a first switching switch, and a first antenna. One end of each first radio frequency unit is connected to the first processing module. The first switching switch is connected between the other end of each first radio frequency unit and the first antenna. The first processing module is connected to the first switching switch. The first radio frequency units have different frequencies. The control of the first bridge to perform frequency switching includes: When there are two first radio frequency units, the first switching switch is controlled to switch the first radio frequency unit connected to the first antenna.

3. The bridge frequency switching method according to claim 2, characterized in that, The method of controlling the first bridge to perform frequency switching further includes: When the number of the first radio frequency units is greater than two, the frequency to be switched is determined based on the target parameters; The first switching switch is controlled to switch the first radio frequency unit connected to the first antenna, and the frequency of the first radio frequency unit after switching is the frequency to be switched.

4. The bridge frequency switching method according to any one of claims 1-3, characterized in that, Determining the need for frequency switching of the first bridge based on the target parameters includes: If the target parameters meet the preset conditions, it is determined that the first bridge needs to be frequency switched; The preset conditions include at least one of the following: the number of collision avoidance attempts exceeds a preset number, the number of co-channel interference devices exceeds a preset number, the signal strength is lower than a preset signal strength, the packet loss rate exceeds a preset packet loss rate, and the return packet time exceeds a preset time.

5. A bridge frequency switching method, characterized in that, The method, applied to a second processing module in a second bridge, includes: The system receives a switching command sent by the first processing module in the first bridge. The switching command is generated by the first processing module based on target parameters that determine that the first bridge needs to be switched in frequency. The target parameters include at least one of the following: number of collision avoidance attempts, number of co-channel interfering devices, signal strength, packet loss rate, and return packet time. A response signal is generated according to the switching command, and the response signal is sent to the first processing module. The response signal is used by the first processing module to control the first bridge to perform frequency switching. Both the first bridge and the second bridge are wireless bridges, and the first bridge and the second bridge are connected by wireless communication. The switching command controls the second bridge to perform frequency switching, and the frequency of the first bridge after switching is the same as the frequency of the second bridge after switching.

6. The bridge frequency switching method according to claim 5, characterized in that, The second bridge also includes at least two second radio frequency units, a second switching switch, and a second antenna. One end of each second radio frequency unit is connected to the second processing module. The second switching switch is connected between the other end of each second radio frequency unit and the second antenna. The second processing module is connected to the second switching switch. The frequencies of each second radio frequency unit are different. The step of controlling the second bridge to perform frequency switching according to the switching command includes: When there are two second radio frequency units, control the second switching switch to switch the second radio frequency unit connected to the second antenna.

7. The bridge frequency switching method according to claim 6, characterized in that, The switching command includes the frequency to be switched, and the step of controlling the second bridge to perform frequency switching according to the switching command further includes: When the number of the second radio frequency unit is greater than two, the second switching switch is controlled to switch the second radio frequency unit connected to the second antenna based on the frequency to be switched, and the frequency of the second radio frequency unit after switching is the frequency to be switched.

8. A network bridge, characterized in that, The system includes a first processing module, at least two first radio frequency units (RFUs), a first switching switch, and a first antenna. Each of the first RNUs has a different frequency. One end of each first RNU is connected to the first processing module. The first switching switch is connected between the other end of each first RNU and the first antenna. The first processing module is connected to the first switching switch. The first processing module is used to acquire target parameters corresponding to the first bridge, the target parameters being parameters related to frequency switching of the first bridge. When it is determined based on the target parameters that frequency switching of the first bridge is required, the module sends a switching command to the second processing module in the second bridge, receives a response signal from the second processing module, and controls the first bridge to perform frequency switching. The target parameters include at least one of the following: collision avoidance count, number of co-channel interfering devices, signal strength, packet loss rate, and return packet time. The switching command is used by the second processing module to generate a response signal based on the switching command and to control the second bridge to perform frequency switching based on the switching command. Both the first bridge and the second bridge are wireless bridges, connected wirelessly. The frequency of the first bridge after switching is the same as the frequency of the second bridge after switching.

9. A network bridge, characterized in that, It includes a second processing module, at least two second radio frequency units, a second switching switch, and a second antenna. Each second radio frequency unit has a different frequency. One end of each second radio frequency unit is connected to the second processing module. The second switching switch is connected between the other end of each second radio frequency unit and the second antenna. The second processing module is connected to the second switching switch. The second processing module is configured to receive a switching command sent by the first processing module in the first bridge, generate a response signal according to the switching command, and send the response signal to the first processing module. It also controls the second bridge to perform a frequency switch according to the switching command, wherein the frequency of the first bridge after the switch is the same as the frequency of the second bridge after the switch. The switching command is generated by the first processing module based on target parameters that determine that a frequency switch is needed for the first bridge. The target parameters include at least one of the following: number of collision avoidance attempts, number of co-channel interfering devices, signal strength, packet loss rate, and packet return time. The response signal is used by the first processing module to control the first bridge to perform a frequency switch based on the response signal. Both the first bridge and the second bridge are wireless bridges, and they are connected wirelessly.

10. A bridge frequency switching system, characterized in that, It includes a first bridge and a second bridge, wherein the first bridge includes a first processing module and the second bridge includes a second processing module; The first processing module is used to obtain target parameters corresponding to the first bridge, the target parameters being parameters related to the frequency switching of the first bridge, and when it is determined based on the target parameters that the first bridge needs to be frequency switched, sending a switching command to the second processing module in the second bridge; the target parameters include at least one of the following: number of collision avoidance attempts, number of co-channel interfering devices, signal strength, packet loss rate, and return packet time; The second processing module is used to receive the switching command sent by the first processing module in the first bridge, generate a response signal according to the switching command, send the response signal to the first processing module, and control the second bridge to perform frequency switching according to the switching command; both the first bridge and the second bridge are wireless bridges, and the first bridge and the second bridge are connected by wireless communication. The first processing module is further configured to receive the response signal sent by the second processing module and control the first bridge to perform frequency switching, wherein the frequency of the first bridge after switching is the same as the frequency of the second bridge after switching.

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