CN111356190A - Communication link switching method, device, terminal and computer readable storage medium - Google Patents

Abstract

The embodiment of the invention discloses a switching method, a device, a terminal and a computer readable storage medium of a communication link, wherein the method comprises the following steps: detecting the signal intensity of the first network signal and the signal intensity of the second network signal in real time; when the signal intensity of the first network signal and/or the signal intensity of the second network signal are/is larger than or equal to a first threshold value, selecting the first communication link and/or the second communication link to transmit data according to a preset transmission strategy; and when the signal intensity of the first network signal and the signal intensity of the second network signal are smaller than a second threshold value, selecting the third communication link to transmit data. By the method, the communication link can be automatically switched according to the signal intensity of different network signals, the stability of the communication system is improved, and the robustness of the terminal equipment in the communication process is improved.

Description

Communication link switching method, device, terminal and computer-readable storage medium

technical field

The present invention relates to the field of communication technologies, and in particular, to a method, device, terminal and computer-readable storage medium for switching a communication link.

Background technique

With the development and progress of science and technology, intelligent robots are gradually applied in various fields. Inspection robots are intelligent robots that can independently set patrol plans according to the actual use environment. When the patrol robot is running outdoors, it needs to upload the captured multi-channel audio and video data, robot status data, etc. in real time, and also needs to receive control commands from the control terminal. The patrol robot usually transmits data by wireless communication. Network bandwidth and network delay requirements are high.

The traditional cruise robot uses the 4G mobile network to communicate. When the base station is far away and the base station access is large, the network bandwidth during the communication process of the cruise robot will be reduced and the network delay will be high, which cannot meet the usage requirements.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a method, apparatus, terminal and computer-readable storage medium for switching a communication link, which can improve the stability of a communication system and improve the robustness of a terminal device in a communication process.

A method for switching a communication link, applied to a terminal device, wherein the terminal device includes at least three communication modules, the communication modules are used to form a communication link after establishing a communication connection with a communication transmission platform, and the communication link includes The first communication link, the second communication link and the third communication link are respectively used for transmitting the first network signal, the second network signal and the third network signal; the method includes:

Detecting the signal strength of the first network signal and the signal strength of the second network signal in real time;

When the signal strength of the first network signal and/or the signal strength of the second network signal is greater than or equal to a first threshold, select the first communication link and/or the second communication link to transmit data according to a preset transmission strategy ;

When the signal strength of the first network signal and the signal strength of the second network signal are less than the second threshold, the third communication link is selected to transmit data.

Optionally, in one embodiment, the data transmitted by the terminal device includes the first type of data and the second type of data; when the signal strength of the first network signal and/or the signal of the second network signal When the strength is greater than or equal to the first threshold, selecting the first communication link and/or the second communication link to transmit data according to a preset transmission strategy, including:

When the signal strengths of the first network signal and the second network signal are greater than or equal to a first threshold, the first type of data is selected for transmission through the first communication link, and the second type of data is selected through the second communication link road transmission;

When the signal strength of the first network signal is greater than or equal to the first threshold, and the signal strength of the second network signal is less than the second threshold, selecting the first type of data and the second type of data through the first communication link to transmit;

When the signal strength of the second network signal is greater than or equal to the first threshold, and the signal strength of the first network signal is less than the second threshold, selecting the first type of data and the second type of data through the second communication link to transmit.

Optionally, in one embodiment, the first type of data includes at least one of a control instruction, a request instruction, and an intercom instruction.

Optionally, in one embodiment, the second type of data includes at least one of picture data, audio data, and video data.

Optionally, in one embodiment, the communication module includes a 4G communication module, the communication transmission platform includes a mobile base station, and the 4G communication module establishes a communication connection with the mobile base station for transmitting 4G network signals.

Optionally, in one embodiment, the communication module further includes a WiFi communication module, the communication transmission platform further includes a wireless access point, and the WiFi communication module establishes a communication connection with the wireless access point. , which is used to transmit WiFi network signals.

Optionally, in one embodiment, the communication module further includes a COFDM communication module, the communication transmission platform further includes a COFDM device, and the COFDM communication module establishes a communication connection with the COFDM device for transmitting COFDM network signals.

A switching device for a communication link, comprising:

a signal strength detection module for detecting the signal strength of the first network signal and the signal strength of the second network signal in real time;

A first selection module, configured to select the first communication link and/or the second communication link according to the preset transmission strategy when the signal strength of the first network signal and/or the signal strength of the second network signal is greater than or equal to a first threshold communication links to transmit data;

The second selection module is configured to select a third communication link to transmit data when the signal strength of the first network signal and the signal strength of the second network signal are less than the second threshold.

A terminal includes a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the processor executes the steps of the above method.

A computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the steps of the above-mentioned method.

Implementing the embodiment of the present invention will have the following beneficial effects:

The switching method, device, terminal and computer-readable storage medium of the above communication link, by detecting the signal strength of the first network signal and the signal strength of the second network signal in real time, when the signal strength of the first network signal and the signal strength of the second network signal are detected in real time. /or when the signal strength of the second network signal is greater than or equal to the first threshold, select the first communication link and/or the second communication link to transmit data according to the preset transmission strategy, and when the signal strength of the first network signal and the first When the signal strength of the second network signal is less than the second threshold, the third communication link is selected to transmit data. Through the above method, the communication link can be automatically switched according to the signal strength of different network signals, the stability of the communication system is improved, and the robustness of the terminal device in the communication process is improved.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

in:

1 is a schematic diagram of an application environment of a method for switching a communication link in an embodiment;

2 is a schematic diagram of the internal structure of a terminal in one embodiment;

3 is a flowchart of a method for switching a communication link in one embodiment;

4 is a flowchart of a method for switching a communication link in another embodiment;

FIG. 5 is a structural block diagram of an apparatus for switching a communication link in an embodiment.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are for the purpose of describing specific embodiments only, and are not intended to limit the application. It will be understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, a first application may be referred to as a second application, and similarly, a second application may be referred to as a first application, without departing from the scope of this application. Both the first application and the second application are applications, but they are not the same application.

FIG. 1 is a schematic diagram of an application environment of a method for switching a communication link in an embodiment. As shown in FIG. 1 , the application environment includes a terminal device 110 and a communication transmission platform 120, and the terminal device 110 and the communication transmission platform 120 are communicatively connected through a network .

The terminal device 110 may be an inspection robot, or other intelligent robots that provide special services, such as underwater robots, aerial robots, military robots, agricultural robots, and the like. It can be understood that the terminal device 110 may also be other devices with communication functions, such as a mobile phone, a tablet computer, a personal digital assistant, or a wearable device.

The communication transmission platform 120 may be a mobile base station, a wireless access point (Wireless Access Point, AP) or a COFDM (Coded Orthogonal Frequency Division Multiplexing, coded orthogonal frequency division multiplexing) device.

FIG. 2 is a schematic diagram of an internal structure of a terminal in an embodiment. As shown in Fig. 2, the terminal includes a processor, a memory and a communication module connected through a system bus. Among them, the processor is used to provide computing and control capabilities to support the operation of the entire terminal. The memory is used for storing data, programs, etc., and at least one computer program is stored in the memory, and the computer program can be executed by the processor to implement the method for switching a communication link applicable to a terminal provided in the embodiments of this application. The memory may include non-volatile storage media and internal memory. The nonvolatile storage medium stores an operating system and a computer program. The computer program can be executed by the processor to implement a communication link switching method provided by the following various embodiments. Internal memory provides a cached execution environment for operating system computer programs in non-volatile storage media. The communication module may be a 4G communication module, a WiFi communication module, or a COFDM communication module, etc., for communicating with an external communication transmission platform. The terminal may be an inspection robot.

Those skilled in the art can understand that the structure shown in FIG. 2 is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the terminal to which the solution of the present application is applied. More or fewer components are shown in the figures, either in combination or with different arrangements of components.

FIG. 3 is a flowchart of a method of switching a communication link in one embodiment. The switching method of the communication link in this embodiment is described by taking the terminal device in FIG. 1 as an example. The terminal device includes at least three communication modules, and the communication modules are used to establish a communication connection with the communication transmission platform. A communication link is formed, the communication link includes a first communication link, a second communication link and a third communication link for transmitting the first network signal, the second network signal and the third network signal respectively. It can be understood that, the switching method of the communication link may also be applied to a control platform that is communicatively connected to the terminal device, which is not limited in this embodiment. The switching method of the communication link can improve the stability of the communication system and improve the robustness of the terminal equipment in the communication process. As shown in FIG. 3 , the method for switching a communication link includes the following steps 302 to 306:

Step 302: Detect the signal strength of the first network signal and the signal strength of the second network signal in real time.

The terminal device can establish multiple communication links with the communication transmission platform through multiple communication modules, and can be used to transmit multiple network signals. In this implementation, by detecting the signal strength of the first network signal and the signal strength of the second network signal in real time, a communication link with a better communication state can be selected by comparing the strengths and weaknesses of the network signals. Optionally, the first network signal may be a 4G network signal, and the second network signal may be a WiFi network signal.

Specifically, after the terminal device establishes a communication connection with the communication transmission platform through each communication module, a communication link is formed, and the terminal can obtain the signal strength of the network signal transmitted by each communication link in real time. For example, the signal strength of the wireless network signal can be obtained through RSSI (Received Signal Strength Indication), and the link quality of the communication link can be determined. The signal strength of different wireless network signals can be -85dBm, -95dBm, -115dBm, etc. .

Optionally, the terminal device may also obtain the signal transmission rate of the communication link, and judge the link quality of the communication link according to the signal transmission rate, so as to select a communication link with a better communication state. When the terminal device communicates with the communication transmission platform through the communication module, the signal transmission rate of the current communication link can be obtained, and the signal transmission rate reflects the signal strength of the network signal transmitted by the current communication link. For example, the signal transmission rates of different communication links may be 6 Mbps (Million bits per second, megabits per second), 24 Mbps, 54 Mbps, etc., that is, reflecting the network transmission speed of the communication links.

Step 304: When the signal strength of the first network signal and/or the signal strength of the second network signal is greater than or equal to a first threshold, select the first communication link and/or the second communication link according to a preset transmission strategy way to transmit data.

The first network signal can be a 4G network signal, and the second network signal can be a WiFi network signal. The 4G network signal has the characteristics of low network delay and good real-time communication effect. The WiFi network signal has the characteristics of high bandwidth and can carry a large amount of data transmission. The 4G network signal and the WiFi network signal are commonly used wireless communication signals for terminal equipment. In this embodiment, the signal strength of the first network signal and the second network signal is preferentially judged, so as to determine whether to select the 4G network or the WiFi network according to the signal strength. to communicate.

Specifically, the first threshold can be understood as a signal strength limit value at which the network signal is in a better signal state. When the signal strength of the first network signal and/or the signal strength of the second network signal is greater than or equal to the first threshold, it indicates that the first network signal and/or the second network signal are in a better signal state, and the transmission can be performed according to the preset The strategy selects the communication link corresponding to the first network signal and/or the second network signal to transmit data, that is, selects the first communication link and/or the second communication link for communication.

Step 306: When the signal strength of the first network signal and the signal strength of the second network signal are less than the second threshold, select the third communication link to transmit data.

The third network signal may be a COFDM network signal, and the COFDM network adopts low-frequency frequency band communication and has good "diffraction" and "penetration" capabilities in a non-visible and obstructed environment. When the signal strength of the first network signal and the signal strength of the second network signal are less than the second threshold, it indicates that both the first network signal and the second network signal are in a state of poor signal, and selecting the first network or the second network will affect the Data transmission effect, at this time, the communication link corresponding to the third network signal is used to transmit data, that is, the third communication link is used for communication, which can bring better communication effect and ensure the timeliness and smoothness of data transmission.

In the method for switching a communication link provided in this embodiment, by detecting the signal strength of the first network signal and the signal strength of the second network signal in real time, when the signal strength of the first network signal and/or the signal strength of the second network signal is When the signal strength of the first network signal is greater than or equal to the first threshold, the first communication link and/or the second communication link is selected to transmit data according to the preset transmission strategy. When the signal strength of the first network signal and the signal strength of the second network signal are When the value is less than the second threshold, the third communication link is selected to transmit data. Through the above method, the communication link can be automatically switched according to the signal strength of different network signals, the stability of the communication system is improved, and the robustness of the terminal device in the communication process is improved.

In one embodiment, the data transmitted by the terminal device includes a first type of data and a second type of data, where the first type of data refers to a data type with low bandwidth requirements, such as control instructions; the second type of data refers to It is a data type with high bandwidth requirements, such as audio and video data. As shown in FIG. 4 , step 304 further includes the following steps 402 to 406:

Step 402: When the signal strengths of the first network signal and the second network signal are greater than or equal to a first threshold, select the first type of data to transmit through the first communication link, and select the second type of data to transmit through the first communication link. Two communication link transmissions.

When the signal strength of the first network signal and the signal strength of the second network signal are greater than or equal to the first threshold, the communication link corresponding to the first network signal and the second network signal may be selected to transmit data according to requirements, that is, the first network signal may be selected to transmit data. The communication link communicates with a second communication link.

For example, the first threshold may be -105dBm. When the signal strength of the network signal is greater than or equal to -105dBm, it is determined that the network signal is in a better signal state. When the signal strength of the 4G network signal and the WiFi network signal is greater than or equal to -105dBm, the 4G network can be preferentially selected for data types with low bandwidth requirements, and the WiFi network can be preferentially selected for data types with high bandwidth requirements.

Step 404: When the signal strength of the first network signal is greater than or equal to the first threshold, and the signal strength of the second network signal is less than the second threshold, select the first type of data and the second type of data to pass through the first communication link for transmission.

The second threshold can be understood as a signal strength limit value at which the network signal is in a poor signal state. When the signal strength of the first network signal is greater than or equal to the first threshold, and the signal strength of the second network signal is less than the second threshold, it indicates that the first network signal is in a state of better signal, and the second network signal is in a state of poor signal. state, the first type of data and the second type of data can be selected to be transmitted through the first communication link corresponding to the first network signal to ensure the timeliness and smoothness of data transmission.

For example, the second threshold may be -115dBm. When the signal strength of the network signal is less than -105dBm, it is determined that the network signal is in a poor signal state. When the signal strength of the 4G network signal is greater than or equal to -105dBm, and the signal strength of the WiFi network signal is less than -115dBm, the 4G network will be preferentially selected for communication for data types with low bandwidth requirements and data types with high bandwidth requirements.

Step 406: When the signal strength of the second network signal is greater than or equal to the first threshold, and the signal strength of the first network signal is less than the second threshold, select the first type of data and the second type of data to pass through the second communication link for transmission.

Similarly, when the signal strength of the WiFi network signal is greater than or equal to -105dBm, and the signal strength of the 4G network signal is less than -115dBm, the WiFi network will be preferred for both the data types with low bandwidth requirements and the data types with high bandwidth requirements. signal to communicate.

The communication link switching method provided in this embodiment can automatically switch communication links according to the signal strengths of different network signals, which improves the stability of the communication system and improves the robustness of the terminal device in the communication process.

In one embodiment, the first type of data includes, but is not limited to, control instructions, request instructions, intercom instructions, and the like.

In one embodiment, the second type of data includes, but is not limited to, picture data, audio data, video data, and the like.

In one embodiment, the communication module includes a 4G communication module, the communication transmission platform includes a mobile base station, and the 4G communication module establishes a communication connection with the mobile base station for transmitting 4G network signals. For example, the inspection robot can connect to the operator's 4G network base station through the 4G module, and then access the Internet to interact with the server deployed on the user side and the final control platform.

In one embodiment, the communication module further includes a WiFi communication module, the communication transmission platform further includes a wireless access point, the WiFi communication module establishes a communication connection with the wireless access point for transmitting WiFi network signals. For example, the inspection robot connects to the self-deployed AP base station through the WiFi communication module, and then accesses the Internet to interact with the server deployed on the user side and the final control platform.

In one embodiment, the communication module further includes a COFDM communication module, the communication transmission platform further includes a COFDM device, and the COFDM communication module establishes a communication connection with the COFDM device for transmitting COFDM network signals. For example, the inspection robot establishes a point-to-point transmission link with the COFDM device on the user side through the COFDM communication module, and then accesses the Internet to interact with the server deployed on the user side and the final control platform.

In the above communication link switching method, the terminal device will detect the quality of the first network signal and the second network signal in real time during operation, compare with the set threshold, and match the corresponding network communication mode according to the comparison result. The first network is preferentially selected for data types with low bandwidth requirements, the second network is preferentially selected for data types with high bandwidth requirements, and the third network is used as a bottom-line communication method. Through the above method, combined with the advantages and disadvantages of various communication methods, a network selection strategy of maximizing strengths and avoiding weaknesses is adopted, which can not only ensure the real-time performance of low-traffic data types, but also ensure the accessibility of large-traffic data types. At the same time, the third network is used as the The bottom line measures further improve the robustness of the robot wireless communication system.

It should be understood that although the various steps in the above-mentioned FIGS. 3-4 are shown in sequence according to the arrows, these steps are not necessarily executed in the sequence shown by the arrows. Unless explicitly stated herein, the execution of these steps is not strictly limited to the order, and these steps may be performed in other orders. Moreover, at least a part of the steps in FIGS. 3-4 may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed and completed at the same time, but may be executed at different times. These sub-steps or stages are not necessarily completed at the same time. The order of execution of the steps is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a part of sub-steps or stages of other steps.

As shown in FIG. 5 , in one embodiment, an apparatus for switching a communication link is provided. The apparatus includes a signal strength detection module 510 , a first selection module 520 and a second selection module 530 .

The signal strength detection module 510 is configured to detect the signal strength of the first network signal and the signal strength of the second network signal in real time.

The first selection module 520 is configured to select the first communication link and/or the second communication link according to the preset transmission strategy when the signal strength of the first network signal and/or the signal strength of the second network signal is greater than or equal to the first threshold. The communication link transmits data.

The second selection module 530 is configured to select a third communication link to transmit data when the signal strength of the first network signal and the signal strength of the second network signal are less than the second threshold.

The above communication link switching device can automatically switch the communication link according to the signal strengths of different network signals, which improves the stability of the communication system and improves the robustness of the terminal equipment in the communication process.

For the specific definition of the switching apparatus of the communication link, reference may be made to the definition of the switching method of the communication link above, which will not be repeated here. Each module in the above-mentioned switching device of the communication link may be implemented in whole or in part by software, hardware and combinations thereof. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

The implementation of each module in the apparatus for switching a communication link provided in the embodiments of the present application may be in the form of a computer program. The computer program can be run on a terminal or server. The program modules constituted by the computer program can be stored in the memory of the terminal or the server. When the computer program is executed by the processor, it implements the steps of the communication link switching method described in the embodiments of the present application.

Embodiments of the present application also provide a computer-readable storage medium. One or more non-volatile computer-readable storage media containing computer-executable instructions that, when executed by one or more processors, cause the processors to perform as described in the various embodiments above. The described switching method of the communication link.

The embodiments of the present application also provide a computer program product. A computer program product containing instructions, when executed on a computer, causes the computer to perform the method for switching a communication link described in the above embodiments.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), among others.

The above disclosures are only preferred embodiments of the present invention, and of course, the scope of the rights of the present invention cannot be limited by this. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims (10)

1. A method for switching a communication link, characterized in that it is applied to a terminal device, the terminal device comprising at least three communication modules, and the communication modules are used to form a communication link after establishing a communication connection with a communication transmission platform, The communication link includes a first communication link, a second communication link and a third communication link, which are respectively used for transmitting the first network signal, the second network signal and the third network signal; the method includes: Detecting the signal strength of the first network signal and the signal strength of the second network signal in real time; When the signal strength of the first network signal and/or the signal strength of the second network signal is greater than or equal to a first threshold, select the first communication link and/or the second communication link to transmit data according to a preset transmission strategy ; When the signal strength of the first network signal and the signal strength of the second network signal are less than the second threshold, the third communication link is selected to transmit data. 2 . The method according to claim 1 , wherein the data transmitted by the terminal device includes first type data and second type data; the signal strength of the first network signal and/or the second When the signal strength of the network signal is greater than or equal to the first threshold, selecting the first communication link and/or the second communication link to transmit data according to a preset transmission strategy, including: When the signal strengths of the first network signal and the second network signal are greater than or equal to a first threshold, the first type of data is selected for transmission through the first communication link, and the second type of data is selected through the second communication link road transmission; When the signal strength of the first network signal is greater than or equal to the first threshold, and the signal strength of the second network signal is less than the second threshold, selecting the first type of data and the second type of data through the first communication link to transmit; When the signal strength of the second network signal is greater than or equal to the first threshold, and the signal strength of the first network signal is less than the second threshold, selecting the first type of data and the second type of data through the second communication link to transmit. 3. The method according to claim 2, wherein the first type of data comprises at least one of a control instruction, a request instruction, and an intercom instruction. 4. The method according to claim 2, wherein the second type of data comprises at least one of picture data, audio data, and video data. 5. The method according to claim 1, wherein the communication module comprises a 4G communication module, the communication transmission platform comprises a mobile base station, and the 4G communication module establishes a communication connection with the mobile base station for transmitting 4G network signal. 6 . The method according to claim 1 , wherein the communication module further comprises a WiFi communication module, the communication transmission platform further comprises a wireless access point, the WiFi communication module is connected to the wireless access access point. 7 . Click to establish a communication connection for transmitting WiFi network signals. 7. The method according to claim 1, wherein the communication module further comprises a COFDM communication module, the communication transmission platform further comprises a COFDM device, and the COFDM communication module establishes a communication connection with the COFDM device for transmitting COFDM network signal. 8. A switching device for a communication link, comprising: a signal strength detection module for detecting the signal strength of the first network signal and the signal strength of the second network signal in real time; A first selection module, configured to select the first communication link and/or the second communication link according to the preset transmission strategy when the signal strength of the first network signal and/or the signal strength of the second network signal is greater than or equal to a first threshold communication links to transmit data; The second selection module is configured to select a third communication link to transmit data when the signal strength of the first network signal and the signal strength of the second network signal are less than the second threshold. 9. A terminal, characterized in that it comprises a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the processor is made to execute the program as claimed in claims 1 to 7. The steps of any one of the methods. 10. A computer-readable storage medium on which a computer program is stored, characterized in that, when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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