CN112152709A - Light fidelity LiFi control method and device of mobile terminal, mobile terminal and medium - Google Patents
Light fidelity LiFi control method and device of mobile terminal, mobile terminal and medium Download PDFInfo
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- CN112152709A CN112152709A CN201910577303.2A CN201910577303A CN112152709A CN 112152709 A CN112152709 A CN 112152709A CN 201910577303 A CN201910577303 A CN 201910577303A CN 112152709 A CN112152709 A CN 112152709A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The application provides a light fidelity LiFi control method and device of a mobile terminal, the mobile terminal and a storage medium, the mobile terminal comprises a plurality of LiFi receivers facing different directions, and the method comprises the following steps: detecting the signal intensity of the currently working LiFi receiver; judging whether switching is needed according to the signal intensity of the currently working LiFi receiver; if so, sending polling requests to a plurality of LiFi receivers in a non-working state to acquire the signal intensity of the plurality of LiFi receivers in the non-working state; and selecting a switching target to switch according to the signal intensity of the plurality of LiFi receivers in the non-working state. The method realizes that the LiFi signal is received by the LiFi receiver with no deviation or minimum deviation between the signal receiving direction and the light propagation direction, thereby avoiding the influence on the data transmission efficiency when the current LiFi receiver receives the signal and has deviation between the light propagation direction and the signal receiving direction, ensuring the data transmission efficiency and the communication quality, improving the communication reliability and improving the user experience.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for controlling light fidelity LiFi of a mobile terminal, and a storage medium.
Background
The Light Fidelity (LiFi) technology is a Light internet access technology, and Light emitted by an LED lighting lamp is used as a transmission tool for network signals to transmit data, so as to realize illumination internet access. LiFi has the characteristics of low radiation, low energy consumption, low carbon and environmental protection, and gradually becomes a research hotspot in the field of the Internet.
In the related art, when the LiFi technology is used for communication between devices, since visible light can only be transmitted along a straight line, when the devices receive LiFi signals, if a receiving direction and a light transmitting direction have a deviation, data transmission efficiency is easily affected, and the problems of low transmission efficiency, poor communication quality and poor reliability are caused.
Disclosure of Invention
The embodiment of the application provides a light fidelity LiFi control method and device for a mobile terminal, the mobile terminal and a medium, and the method and device are used for solving the technical problems that in the related technology, when the LiFi technology is used for communication between devices, due to the fact that visible light can only be transmitted along a straight line, when the devices receive LiFi signals, if a receiving direction and a light transmitting direction have deviation, data transmission efficiency is affected, and transmission efficiency is low, communication quality is poor, and reliability is poor.
To this end, an embodiment of an aspect of the present application provides a method for controlling LiFi in a mobile terminal, where the mobile terminal includes a plurality of LiFi receivers oriented differently, and the method includes: detecting the signal intensity of the currently working LiFi receiver; judging whether switching is needed according to the signal intensity of the currently working LiFi receiver; if the switching is needed, sending polling requests to the plurality of non-working LiFi receivers to acquire the signal intensities of the plurality of non-working LiFi receivers; and selecting a switching target to switch according to the signal intensity of the plurality of LiFi receivers in the non-working state.
Another embodiment of the present application provides an optical fidelity, LiFi, control apparatus for a mobile terminal, the mobile terminal comprising a plurality of LiFi receivers oriented differently, the apparatus comprising: the detection module is used for detecting the signal intensity of the currently working LiFi receiver; the judging module is used for judging whether switching is needed according to the signal intensity of the currently working LiFi receiver; the sending module is used for sending polling requests to the plurality of LiFi receivers in the non-working state when the LiFi receivers need to be switched; the acquisition module is used for acquiring the signal intensity of the plurality of LiFi receivers in the non-working state; and the switching module is used for selecting a switching target to switch according to the signal intensity of the plurality of LiFi receivers in the non-working state.
In another aspect of the present application, an embodiment provides a mobile terminal, including a housing, a processor, a memory, a circuit board, a power circuit, and a plurality of LiFi receivers oriented in different directions; wherein the circuit board is arranged inside a space enclosed by the shell, and the processor and the memory are arranged on the circuit board; the power supply circuit is used for supplying power to each circuit or device of the mobile terminal; the memory is used for storing executable program codes; the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, for performing: detecting the signal intensity of the currently working LiFi receiver; judging whether switching is needed according to the signal intensity of the currently working LiFi receiver; if the switching is needed, sending polling requests to the plurality of non-working LiFi receivers to acquire the signal intensities of the plurality of non-working LiFi receivers; and selecting a switching target to switch according to the signal intensity of the plurality of LiFi receivers in the non-working state.
A further aspect of the present application provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the LiFi control method for mobile terminals according to the first aspect of the present invention.
The technical scheme disclosed in the application has the following beneficial effects:
through setting up a plurality of different liFi receivers of orientation in mobile terminal, and according to the signal strength of the liFi receiver of current work, when confirming that need switch over the liFi receiver of current work, the signal strength according to a plurality of non-operating condition's LiFi receiver selects the switching target and switches over, it does not have the deviation or the minimum LiFi receiver of deviation to receive the LiFi signal to have realized utilizing the direction of received signal and light propagation direction, thereby the influence to data transmission efficiency when having the deviation in the direction of having avoided mobile terminal current LiFi receiver received signal and light propagation direction, data transmission efficiency and communication quality have been guaranteed, the reliability of communication has been improved.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic flowchart of an optical fidelity LiFi control method of a mobile terminal according to an embodiment of the present application;
FIG. 2 is a schematic front view of a mobile terminal according to an embodiment of the present application;
FIG. 3 is a schematic rear view of a mobile terminal according to an embodiment of the present application;
FIG. 4 is a schematic side view of a mobile terminal according to an embodiment of the present application;
fig. 5 is a flowchart illustrating an optical fidelity LiFi control method of a mobile terminal according to another embodiment of the present application;
FIG. 6 is an exemplary diagram of different pixels in a pixel array receiving light at different angles;
fig. 7 is a schematic structural diagram of an optical fidelity LiFi control apparatus of a mobile terminal according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of an optical fidelity LiFi control apparatus of a mobile terminal according to another embodiment of the present application;
fig. 9 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
Hereinafter, a method, an apparatus, a mobile terminal, and a computer-readable storage medium for controlling an optical fidelity LiFi of the mobile terminal according to embodiments of the present application will be described with reference to the accompanying drawings.
First, a method for controlling an optical fidelity LiFi of a mobile terminal according to an embodiment of the present application will be specifically described with reference to fig. 1.
It should be noted that the LiFi control method for mobile terminal in light fidelity provided in the embodiments of the present application is applied to a mobile terminal including a plurality of LiFi receivers oriented differently, the mobile terminal communicates with other devices through the LiFi receiver, because the bottom layer of the Li-Fi protocol is compatible with the WiFi802.11 baseband, when transmitting data, a TDD protocol in WiFi can be used to achieve simultaneous transmission of one-to-many or many-to-one, and the Li-Fi technology has very high security when transmitting data, because visible light can only be transmitted along a straight line, and the directivity is good, only a person on the straight line of light transmission is likely to intercept information, thereby communicating by using the LiFi technology, and the security of data transmission can be improved. In addition, because the optical communication mode is adopted to transmit data, the frequency band is not limited, so that the interference is avoided, and the reliability of data transmission is ensured. And because the low time delay of LiFi, can be applied to the scene that needs the data of quick transmission, for example share the file fast, exchange business card contact means, watch video jointly etc..
However, the good directivity of visible light improves the safety of LiFi communication, and also makes the data transmission efficiency easily affected if there is a deviation between the receiving direction and the light propagation direction due to the directivity limitation of LiFi when the device receives the LiFi signal, thereby causing the problems of low transmission efficiency, poor communication quality, and poor reliability.
In order to solve the above problems, embodiments of the present application provide a method for controlling light fidelity LiFi of a mobile terminal, in which a plurality of LiFi receivers with different orientations are disposed in the mobile terminal, and detect signal strength of a currently operating LiFi receiver, and then determine whether a switch is needed according to the signal strength of the currently operating LiFi receiver, if so, send a polling request to the plurality of non-operating LiFi receivers to obtain the signal strengths of the plurality of non-operating LiFi receivers, and further select a switch target according to the signal strengths of the plurality of non-operating LiFi receivers to switch, so as to receive the LiFi signal by the LiFi receiver having no or minimum deviation between a signal receiving direction and a light propagation direction, thereby avoiding an influence on data transmission efficiency when the signal receiving direction of the current LiFi receiver of the mobile terminal has deviation between the light propagation direction and the light propagation direction, the data transmission efficiency and the communication quality are ensured, and the communication reliability is improved.
Fig. 1 is a flowchart illustrating an optical fidelity LiFi control method of a mobile terminal according to an embodiment of the present disclosure.
As shown in fig. 1, the light fidelity LiFi control method of the mobile terminal of the present application may include the steps of:
Specifically, the LiFi control method for mobile terminals provided in the embodiments of the present application may be implemented by the LiFi control apparatus for mobile terminals provided in the embodiments of the present application, which is hereinafter referred to as a control apparatus for short. The control device can be configured in the mobile terminal to select a switching target to switch according to the signal strengths of the plurality of non-operating LiFi receivers when the LiFi receiver currently operating in the mobile terminal needs to be switched. The mobile terminal in the embodiment of the present application may be any hardware device including multiple LiFi receivers oriented in different directions, such as a smart phone, a tablet computer, a personal digital assistant, and the like. The application takes a mobile terminal as an example for explanation.
The number of the LiFi receivers can be set arbitrarily according to the shape, the function and the like of the mobile terminal.
During specific implementation, a plurality of LiFi receivers with different orientations in the embodiment of the present application can be arranged at any position of a mobile terminal, such as a smart phone, as long as the orientations of the respective LiFi receivers are different. For example, assuming that the number of LiFi receivers included in the mobile terminal is 3, which are respectively a first LiFi receiver, a second LiFi receiver, and a third LiFi receiver, the first LiFi receiver may be disposed at a position above the front of the smartphone according to fig. 2, the second LiFi receiver may be disposed at a position above the back of the smartphone according to fig. 3, and the third LiFi receiver is disposed on the side of the smartphone according to fig. 4, so that the first LiFi receiver faces the front of the smartphone, the second LiFi receiver faces the back of the smartphone, and the third LiFi receiver faces the side of the smartphone. Fig. 2 is a schematic front view of a smart phone, fig. 3 is a schematic back view of the smart phone, and fig. 4 is a schematic side view of the smart phone.
The currently operating LiFi receiver is a LiFi receiver that is currently receiving a LiFi signal using the LiFi receiver and performing communication using the LiFi signal.
It can be understood that the signal received by the currently operating LiFi receiver is an optical signal, and the intensity of the optical signal is not easy to detect, so in the embodiment of the present application, the optical signal may be converted into an intermediate frequency signal to implement the detection of the signal intensity of the currently operating LiFi receiver. That is, step 101 may be implemented by:
acquiring a LiFi signal of a currently working LiFi receiver and converting the LiFi signal into an electric signal;
and converting the electric signal into an intermediate frequency signal, and acquiring the signal-to-noise ratio of the intermediate frequency signal, wherein the signal-to-noise ratio of the intermediate frequency signal is the signal intensity.
It will be appreciated that the signal-to-noise ratio of the intermediate frequency signal can be used to characterize the signal strength of the currently operating LiFi receiver in this application. Generally, the larger the signal-to-noise ratio of the intermediate frequency signal is, the stronger the signal strength of the corresponding currently operating LiFi receiver is, and the smaller the signal-to-noise ratio of the intermediate frequency signal is, the poorer the signal strength of the corresponding currently operating LiFi receiver is.
It should be noted that the technology of converting an optical signal into an electrical signal and converting the electrical signal into an intermediate frequency signal is a mature technology at present, and the existing photoelectric conversion technology and frequency conversion technology are both applicable to the present application and are not described herein again.
And 102, judging whether switching is needed or not according to the signal intensity of the currently working LiFi receiver.
Specifically, a switching threshold may be preset, and if the signal intensity of the currently-operating LiFi receiver is smaller than the switching threshold, it may be determined that the currently-operating LiFi receiver needs to be switched, and if the signal intensity of the currently-operating LiFi receiver is greater than or equal to the switching threshold, it may be determined that the currently-operating LiFi receiver does not need to be switched.
It should be noted that, if the signal-to-noise ratio of the intermediate frequency signal corresponding to the LiFi signal of the currently operating LiFi receiver is used to determine whether the switching is required, the switching threshold is also the signal-to-noise ratio threshold.
It can be understood that, when the LiFi signal is received by the LiFi receiver facing the mobile terminal, if the mobile terminal rotates at a larger angle, the direction of receiving the LiFi signal by the currently operating LiFi receiver may deviate from the propagation direction of the light, and even the LiFi signal may not be received. For example, if the current terminal a emits a LiFi signal to the front side of the mobile terminal B, the first LiFi receiver disposed toward the front side of the mobile terminal B is currently in a working state, and the back side of the mobile terminal B faces the terminal a after the mobile terminal B rotates, the first LiFi receiver cannot receive the LiFi signal due to shielding of the mobile terminal B itself. Then, in the embodiment of the present application, it may also be determined whether the currently operating LiFi receiver needs to be switched according to the rotation information of the mobile terminal. The rotation information may include information such as a rotation direction and a rotation angle of the mobile terminal.
Specifically, for example, the determination is performed according to the rotation angle of the mobile terminal, and the rotation angle of the mobile terminal may be detected by using a sensor such as a rotation vector sensor, a direction sensor, or a gyroscope sensor provided in the mobile terminal, and it may be determined whether the rotation angle is greater than a preset threshold. If the rotation angle is larger than a preset threshold value, the fact that the currently working LiFi receiver needs to be switched can be determined; if the rotation angle is smaller than or equal to the preset threshold, it can be determined that the currently working LiFi receiver does not need to be switched, so that the LiFi receiver is not switched.
And 103, if the switching is required, sending polling requests to the plurality of LiFi receivers in the non-working state to acquire the signal intensity of the plurality of LiFi receivers in the non-working state.
And 104, selecting a switching target to switch according to the signal intensity of the plurality of LiFi receivers in the non-working state.
In specific implementation, a request sequence when polling requests are sent to a plurality of non-working-state LiFi receivers can be preset, so that if the control device determines that the currently-working LiFi receivers need to be switched, the polling requests can be sent to the non-working-state LiFi receivers according to the preset request sequence to acquire the signal strengths of other non-working-state LiFi receivers, and the signal strengths of the non-working-state LiFi receivers are compared, so that the LiFi receiver with the strongest signal strength is determined as a switching target, and the LiFi receiver is switched to receive the LiFi signal to perform communication.
It should be noted that, if it is determined through comparison that the signal intensity of the LiFi receiver with the strongest signal intensity in the non-operating LiFi receivers is still smaller than the signal intensity of the currently operating LiFi receiver, the LiFi receiver may not be switched although the signal intensity of the currently operating LiFi receiver is smaller than the switching threshold, and the currently operating LiFi receiver continues to receive the LiFi signal for communication.
It can be understood that, by the light fidelity LiFi control method of the mobile terminal provided by the embodiment of the present application, because a plurality of LiFi receivers with different orientations are arranged in the mobile terminal, and when the currently operating LiFi receiver needs to be switched, the LiFi receiver with the strongest signal intensity can be switched to receive the LiFi signal for communication, so that the LiFi signal can be received by the LiFi receiver with the direction of receiving the signal and the light propagation direction having no deviation or the deviation being the smallest, thereby avoiding the influence on the data transmission efficiency when the direction of receiving the signal by the current LiFi receiver of the mobile terminal and the light propagation direction have deviation, ensuring the data transmission efficiency and the communication quality, improving the reliability of communication, and improving the user experience.
The method for controlling the light fidelity LiFi of the mobile terminal provided by the embodiment of the application comprises the steps of arranging a plurality of LiFi receivers with different orientations in the mobile terminal, detecting the signal intensity of the currently working LiFi receiver, judging whether switching is needed according to the signal intensity of the currently working LiFi receiver, if so, sending polling requests to the plurality of non-working LiFi receivers to obtain the signal intensities of the plurality of non-working LiFi receivers, further selecting a switching target according to the signal intensities of the plurality of non-working LiFi receivers to switch, realizing receiving the LiFi signals by the LiFi receivers with no deviation or minimum deviation between the signal receiving direction and the light propagation direction, further avoiding the influence on data transmission efficiency when the signal receiving direction of the current LiFi receivers of the mobile terminal is deviated from the light propagation direction, and ensuring the data transmission efficiency and communication quality, the reliability of communication is improved, and the user experience is improved.
As can be seen from the above analysis, in the embodiment of the present application, it may be determined that the LiFi receiver needs to be switched when the signal intensity of the currently operating LiFi receiver is less than the switching threshold, so that the switching target is selected to be switched according to the signal intensities of the plurality of non-operating LiFi receivers. In practical applications, it may only be temporary that the signal intensity of the currently operating LiFi receiver is less than the switching threshold, for example, when the user walks with the mobile terminal, the mobile terminal swings back and forth on the user side along with the movement of the arm of the user, the signal intensity of the currently operating LiFi receiver may change back and forth between being greater than the switching threshold and being less than the switching threshold, and if the LiFi receiver is frequently switched, the data transmission efficiency may be lower.
Fig. 5 is a flowchart illustrating an optical fidelity LiFi control method of a mobile terminal according to another embodiment of the present application.
As shown in fig. 5, the method for controlling the light fidelity LiFi of the mobile terminal according to the embodiment of the present application may include the following steps:
The detailed implementation process and principle of the steps 201-203 may refer to the detailed description of the above embodiments, and are not described herein again.
And step 204, acquiring the posture of the mobile terminal.
And step 206, selecting the LiFi receiver with the strongest signal intensity from the plurality of LiFi receivers in the non-working state for switching.
The posture of the mobile terminal may include information of linear acceleration, angular acceleration, motion direction, gravity direction, and the like of the mobile terminal. It can be determined according to a rotation vector sensor, an acceleration sensor, a touch screen, a light sensor, a gravity sensor, a direction sensor, a gyro sensor, etc. provided in the mobile terminal.
Specifically, according to the posture of the mobile terminal, whether the mobile terminal is in a motion state or a non-motion state can be judged, if the mobile terminal is in the non-motion state, that is, in a stable state, it can be determined that the signal intensity of the currently-operating LiFi receiver is smaller than a switching threshold value within a period of time, the LiFi receiver with the strongest signal intensity can be selected from the plurality of LiFi receivers in the non-motion state as a switching target, and the LiFi receiver with the strongest signal intensity is switched to receive the LiFi signal, so that communication is performed. If the mobile terminal is currently in a motion state, that is, in an unstable state, it may be determined that the signal intensity of the currently operating LiFi receiver is temporarily smaller than the switching threshold, and the switching of the LiFi receiver may not be performed first, so as to avoid frequently switching the LiFi receiver.
It should be noted that, if it is determined through comparison that the signal intensity of the LiFi receiver with the strongest signal intensity in the non-operating LiFi receivers is still smaller than the signal intensity of the currently operating LiFi receiver, the LiFi receiver may not be switched although the signal intensity of the currently operating LiFi receiver is smaller than the switching threshold, and the currently operating LiFi receiver continues to receive the LiFi signal for communication.
For example, if the mobile terminal includes a first LiFi receiver, a second LiFi receiver, and a third LiFi receiver, the signal intensity of the first LiFi receiver currently operating is smaller than the switching threshold, and the signal intensity of the second LiFi receiver is greater than the signal intensities of the first LiFi receiver and the third LiFi receiver, the posture of the mobile terminal may be obtained, and if the mobile terminal is determined to be in a stable state according to the current posture of the mobile terminal, the second LiFi receiver may be selected for switching.
In an exemplary embodiment, the mobile terminal may further include a LiFi emitter and a LiFi control module connected to the LiFi emitter and the plurality of LiFi receivers with different orientations, respectively, and the LiFi emitter is controlled to emit a LiFi signal through the LiFi control module, and the currently operating LiFi receiver is controlled to receive the LiFi signal, so that the mobile terminal in the embodiment of the present application is respectively used as the emitting end and the receiving end to perform LiFi communication with other devices.
Further, because originally usually just be provided with Time of Flight range (TOF) module among the mobile terminal, the TOF module realizes the range finding through the reflection light of transmitted light and receipt transmitted light, that is to say, the TOF module includes light transmitter and light receiver. Therefore in this application, in order to reduce mobile terminal's trompil quantity, save mobile terminal's inner space and cost, can regard light transmitter and light receiver in the TOF module as a LiFi receiver in LiFi transmitter and a plurality of LiFi receiver in this application, then set up in addition in mobile terminal a plurality ofly with the mobile terminal in the light receiver towards different LiFi receiver, utilize the original light transmitter in the mobile terminal to launch the LiFi signal as required, utilize one LiFi receiver in the original light receiver in the mobile terminal or other LiFi receiver to receive the LiFi signal as required, communicate with other equipment that have LiFi communication function, for example, realize the direct connection between smart mobile phone and the smart mobile phone. Or, the original light ray emitter in the mobile terminal is used for emitting detection light rays as required, the original light ray receiver in the mobile terminal is used for receiving reflected light rays reflected when the detection light rays encounter an obstacle, and then distance detection is carried out according to the reflected light rays to generate a detection distance.
In this application a possible realization form, can also set up except that the LiFi receiver in the mobile terminal outside the light receiver also can both receive the LiFi signal, also can receive the reflection light that detects light, thereby when carrying out the distance detection, also can judge whether need switch according to the light signal intensity of the detection light that the LiFi receiver of current work received, and according to the light signal intensity of the LiFi receiver of non-operating condition, the strong receiver of selective signal intensity switches.
During the concrete realization, can include the light fidelity LiFi control module who links to each other with LiFi transmitter and a plurality of different LiFi receivers of orientation respectively in the mobile terminal, and the time of flight range TOF control module that links to each other with the LiFi transmitter and a plurality of different LiFi receivers of orientation respectively, thereby through light fidelity LiFi control module, control LiFi transmitter transmission LiFi signal, and control the LiFi receiver of current work receives the LiFi signal, through time of flight range TOF control module, control the LiFi transmitter transmission detection light, and carry out the distance according to the reflected light line of the received detection light of the LiFi receiver of current work and detect, in order to generate the detection distance.
Specifically, the TOF controller obtains the detection distance by calculation and conversion based on the phase difference or time difference between the detection light and the reflected light.
It should be noted that the TOF ranging technology is a relatively mature ranging technology at present, and the existing TOF ranging method is applicable to the present application, which does not describe the TOF ranging technology any more.
In addition, it should be noted that, the light fidelity LiFi control module controls the LiFi receiver which receives the LiFi signal, and the time of flight ranging TOF control module controls the LiFi receiver which receives the reflected light of the detection light, which can be the LiFi receiver which works before the LiFi receiver is switched, that is, the LiFi receiver which works currently in the present application, or the LiFi receiver which is in the working state after the LiFi receiver is switched according to the signal intensity of the LiFi receiver in the non-working state when the present LiFi receiver needs to be switched, and the present application does not limit the above.
In one possible implementation of the embodiments of the present application, the light emitted by the LiFi emitters may be non-visible light, such as infrared light. Because the wavelength of infrared light is longer than that of visible light and has extremely strong penetrating power, the data transmission distance can be increased by transmitting the LiFi signals through the infrared light. Alternatively, the LiFi emitter may employ a laser emitter. The LiFi receiver can employ a photodiode or an avalanche diode. In this embodiment, the avalanche diode may be specifically an Avalanche Photo Diode (APD), which has a "multiplication" effect, and can generate a photocurrent several tens or even hundreds times larger than that of the photodiode under the action of light of the same magnitude, which is equivalent to a light amplification effect, so that the sensitivity of the light receiver can be greatly improved, and compared with a LiFi receiver using a photodiode, the sensitivity of the LiFi receiver using the APD photodiode can be improved by more than 10 dB. Therefore, in this embodiment, the APD photodiode is preferably used as a LiFi receiver to receive the LiFi signal or detection light emitted from the laser emitter.
In addition, in a possible implementation form of the embodiment of the present application, the plurality of LiFi receivers facing different directions include a pixel array, and in the embodiment of the present application, a part of pixels in the pixel array of the currently operating LiFi receiver may be controlled by the LiFi controller to receive light, so as to implement angle adjustment of the received light.
It can be appreciated that the angle at which the LiFi receiver can receive light is different when different pixels in the pixel array are used to receive light. For ease of understanding, the following detailed description is made with reference to FIG. 6.
FIG. 6 is an exemplary diagram of different pixels in a pixel array receiving light at different angles. As shown in fig. 6, when receiving the light emitted from the light source a, the pixels of the left three columns may be used to receive the light, and when receiving the light emitted from the light source b, the pixels of the right two columns may be used to receive the light.
In this embodiment, partial pixel received light in the pixel array of the LiFi receiver of working at present is controlled through the LiFi controller, can realize the angle modulation of received light, and then realizes the controllable LiFi data transmission of directionality to further improve data transmission efficiency.
It should be noted that the currently operating LiFi receiver herein may be a LiFi receiver that operates before switching, or a LiFi receiver that is in an operating state after switching the LiFi receiver according to the signal intensity of the LiFi receiver in a non-operating state when the current LiFi receiver needs to be switched, which is not limited in this application.
The LiFi control method for mobile terminal in the embodiment includes setting a plurality of LiFi receivers with different orientations in the mobile terminal, detecting signal intensity of the currently operating LiFi receiver, determining whether switching is needed according to the signal intensity of the currently operating LiFi receiver, if so, sending polling requests to the plurality of LiFi receivers in the non-operating state to obtain the signal intensities of the plurality of LiFi receivers in the non-operating state, and further determining whether the mobile terminal is in the stable state according to the posture of the mobile terminal, so that the LiFi receiver with the strongest signal intensity is selected from the plurality of LiFi receivers in the non-operating state to switch when the mobile terminal is in the stable state, switching of the LiFi receiver is not needed when the currently operating LiFi receiver is not needed, and switching of the LiFi receiver is not needed when the mobile terminal is in the non-stable state, thereby realizing that the LiFi receiver with no deviation between the direction of receiving signals and the light propagation direction or the smallest deviation is used for receiving the LiFi signals, therefore, the influence on the data transmission efficiency when the current direction of receiving signals by the LiFi receiver of the mobile terminal is deviated from the light propagation direction is avoided, the frequent switching of the LiFi receiver when the mobile terminal is in an unstable state is avoided, the data transmission efficiency and the communication quality are ensured, and the communication reliability is improved.
Hereinafter, a light fidelity LiFi control apparatus of a mobile terminal according to an embodiment of the present application will be described with reference to the accompanying drawings.
Fig. 7 is a schematic structural diagram of an optical fidelity LiFi control apparatus of a mobile terminal according to an embodiment of the present application.
As shown in fig. 7, the mobile terminal includes a plurality of LiFi receivers facing different directions, and the light fidelity LiFi control device of the mobile terminal includes: the device comprises a detection module 11, a judgment module 12, a sending module 13, an acquisition module 14 and a switching module 15.
The detection module 11 is configured to detect the signal intensity of the currently operating LiFi receiver;
the judging module 12 is used for judging whether switching is needed according to the signal intensity of the currently working LiFi receiver;
the sending module 13 is configured to send polling requests to multiple lifei receivers in a non-operating state when the lifei receivers need to be switched;
an obtaining module 14, configured to obtain signal intensities of a plurality of non-operating LiFi receivers; and
and the switching module 15 is configured to select a switching target to switch according to the signal strengths of the plurality of non-operating LiFi receivers.
Specifically, the control device may be configured in the mobile terminal to execute the light fidelity LiFi control method of the mobile terminal in the foregoing embodiment. The mobile terminal in the embodiment of the present application may be any hardware device including multiple LiFi receivers oriented in different directions, such as a smart phone, a tablet computer, a personal digital assistant, and the like.
In a possible implementation form, the detection module 11 is specifically configured to:
acquiring a LiFi signal of a currently working LiFi receiver and converting the LiFi signal into an electric signal;
and converting the electric signal into an intermediate frequency signal, and acquiring the signal-to-noise ratio of the intermediate frequency signal, wherein the signal-to-noise ratio of the intermediate frequency signal is the signal intensity.
It should be noted that, for the implementation process and the technical principle of the light fidelity LiFi control apparatus of the mobile terminal according to the embodiment, reference is made to the foregoing explanation of the light fidelity LiFi control method of the mobile terminal according to the embodiment of the first aspect, and details are not repeated here.
The device for controlling the light fidelity LiFi of the mobile terminal, provided by the embodiment of the application, comprises a plurality of LiFi receivers with different orientations arranged in the mobile terminal, and is used for detecting the signal intensity of the LiFi receiver which is currently working, and then judging whether switching is needed according to the signal intensity of the LiFi receiver which is currently working, if so, sending polling requests to the LiFi receivers in a non-working state to obtain the signal intensities of the LiFi receivers in the non-working state, and further selecting a switching target to switch according to the signal intensities of the LiFi receivers in the non-working state, so that the LiFi receivers which have no deviation or the smallest deviation between the signal receiving direction and the light propagation direction are used for receiving the LiFi signals, thereby avoiding the influence on data transmission efficiency when the signal receiving direction of the LiFi receivers in the current of the mobile terminal is deviated from the light propagation direction, and ensuring the data transmission efficiency and communication quality, the reliability of communication is improved, and the user experience is improved.
In an exemplary embodiment, there is also provided a light fidelity, LiFi, control apparatus of a mobile terminal.
Fig. 8 is a schematic structural diagram of an optical fidelity LiFi control apparatus of a mobile terminal according to another embodiment of the present application.
Referring to fig. 8, the control device is provided in the mobile terminal, and the switching module 15 of the control device includes, in addition to the control device shown in fig. 7:
an acquisition unit 151 for acquiring a posture of the mobile terminal;
a judging unit 152 for judging whether the mobile terminal is in a stable state according to the posture of the mobile terminal;
and the switching unit 153 is configured to select, when the mobile terminal is in a stable state, a LiFi receiver with the strongest signal strength from the plurality of LiFi receivers in the non-operating state for switching.
In a possible implementation form, the mobile terminal further comprises a LiFi emitter 21, the device further comprising: a light fidelity LiFi control module 16 respectively connected with the LiFi transmitter and the plurality of LiFi receivers with different orientations, and a time of flight ranging TOF control module 17 respectively connected with the LiFi transmitter and the plurality of LiFi receivers with different orientations. It should be noted that fig. 8 illustrates an example in which the mobile terminal includes three LiFi receivers, i.e., a first LiFi receiver 22, a second LiFi receiver 23, and a third LiFi receiver 24. Wherein, the partial connecting lines among the LiFi emitter, the plurality of LiFi receivers and other modules are not shown.
The light fidelity LiFi control module 16 is used for controlling the LiFi emitter to emit a LiFi signal and controlling the currently working LiFi receiver to receive the LiFi signal;
and the time of flight ranging TOF control module 17 is used for controlling the LiFi emitter to emit detection light and performing distance detection according to reflected light of the detection light received by the currently working LiFi receiver so as to generate a detection distance.
In another possible implementation form, the plurality of differently oriented LiFi receivers includes an array of pixels, and the light fidelity LiFi control module 16 is further configured to:
and controlling a part of pixels in the pixel array of the currently working LiFi receiver to receive light so as to realize angle adjustment of the received light.
It should be noted that, for the implementation process and the technical principle of the light fidelity LiFi control apparatus of the mobile terminal according to the embodiment, reference is made to the foregoing explanation of the light fidelity LiFi control method of the mobile terminal according to the embodiment of the first aspect, and details are not repeated here.
The device for controlling the light fidelity LiFi of the mobile terminal, provided by the embodiment of the application, comprises a plurality of LiFi receivers with different orientations arranged in the mobile terminal, and is used for detecting the signal intensity of the LiFi receiver which is currently working, and then judging whether switching is needed according to the signal intensity of the LiFi receiver which is currently working, if so, sending polling requests to the LiFi receivers in a non-working state to obtain the signal intensities of the LiFi receivers in the non-working state, and further selecting a switching target to switch according to the signal intensities of the LiFi receivers in the non-working state, so that the LiFi receivers which have no deviation or the smallest deviation between the signal receiving direction and the light propagation direction are used for receiving the LiFi signals, thereby avoiding the influence on data transmission efficiency when the signal receiving direction of the LiFi receivers in the current of the mobile terminal is deviated from the light propagation direction, and ensuring the data transmission efficiency and communication quality, the reliability of communication is improved, and the user experience is improved.
In order to implement the above embodiments, the present application further provides a mobile terminal.
Fig. 9 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application.
Referring to fig. 9, the mobile terminal of the present embodiment includes: the LiFi receiver comprises a housing 201, a processor 202, a memory 203, a circuit board 204, a power circuit 205, and a plurality of LiFi receivers oriented in different directions (fig. 9 shows three LiFi receivers including a first LiFi receiver 22, a second LiFi receiver 23, and a third LiFi receiver 4 as an example).
The circuit board 204 is arranged inside the space enclosed by the shell 201, and the processor 202 and the memory 203 are arranged on the circuit board 204; a power supply circuit 205, configured to supply power to each circuit or device of the mobile terminal; the memory 203 is used for storing executable program codes; wherein, the processor 202 runs a program corresponding to the executable program code by reading the executable program code stored in the memory 203 for executing:
detecting the signal intensity of the currently working LiFi receiver;
judging whether switching is needed according to the signal intensity of the currently working LiFi receiver;
if the switching is needed, sending polling requests to a plurality of LiFi receivers in the non-working state to acquire the signal intensity of the plurality of LiFi receivers in the non-working state; and
and selecting a switching target to switch according to the signal intensity of the plurality of LiFi receivers in the non-working state.
It should be noted that the explanation of the embodiment of the light fidelity LiFi control method of the mobile terminal is also applicable to the mobile terminal of the embodiment, and the implementation principle is similar, and is not described herein again.
The mobile terminal provided by the embodiment of the application is provided with the plurality of LiFi receivers with different orientations, the signal intensity of the LiFi receiver which works at present is detected at the same time, whether switching is needed or not is judged according to the signal intensity of the LiFi receiver which works at present, if yes, polling requests are sent to the LiFi receivers in the non-working state to obtain the signal intensities of the LiFi receivers in the non-working state, and then switching targets are selected according to the signal intensities of the LiFi receivers in the non-working state to switch, so that the LiFi signals are received by the LiFi receivers which have no deviation or the minimum deviation between the signal receiving direction and the light propagation direction in the mobile terminal, the influence on data transmission efficiency when the signal receiving direction of the LiFi receivers in the mobile terminal is deviated from the light propagation direction is avoided, and the data transmission efficiency and communication quality are ensured, the reliability of communication is improved, and the user experience is improved.
To implement the above embodiments, the present application also provides a computer-readable storage medium.
The computer-readable storage medium stores thereon a computer program, which when executed by a processor, implements the LiFi control method of the mobile terminal according to the first aspect.
To achieve the above embodiments, the present application further proposes a computer program, which when the instructions in the computer program product are executed by a processor, executes the light fidelity LiFi control method of the mobile terminal according to the foregoing embodiments.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (12)
1. A method of LiFi control for a mobile terminal, wherein the mobile terminal comprises a plurality of LiFi receivers oriented differently, the method comprising:
detecting the signal intensity of the currently working LiFi receiver;
judging whether switching is needed according to the signal intensity of the currently working LiFi receiver;
if the switching is needed, sending polling requests to the plurality of non-working LiFi receivers to acquire the signal intensities of the plurality of non-working LiFi receivers; and
and selecting a switching target to switch according to the signal intensity of the plurality of LiFi receivers in the non-working state.
2. The LiFi control method of a mobile terminal according to claim 1, wherein said selecting a switching target to switch according to the signal strengths of the plurality of non-operating LiFi receivers comprises:
acquiring the posture of the mobile terminal;
judging whether the mobile terminal is in a stable state or not according to the posture of the mobile terminal;
and if the mobile terminal is in the stable state, selecting the LiFi receiver with the strongest signal intensity from the plurality of LiFi receivers in the non-working state for switching.
3. The LiFi control method of a mobile terminal according to claim 1, wherein said detecting a signal strength of a currently operating LiFi receiver comprises:
acquiring a LiFi signal of the LiFi receiver which is currently working and converting the LiFi signal into an electric signal;
and converting the electric signal into an intermediate frequency signal, and acquiring the signal to noise ratio of the intermediate frequency signal, wherein the signal to noise ratio of the intermediate frequency signal is the signal intensity.
4. The LiFi control method of the mobile terminal according to claim 1, wherein the mobile terminal further comprises a LiFi transmitter, a LiFi control module for light fidelity connected to the LiFi transmitter and the plurality of LiFi receivers with different orientations, respectively, and a time of flight ranging TOF control module connected to the LiFi transmitter and the plurality of LiFi receivers with different orientations, respectively;
the method further comprises the following steps:
controlling the LiFi emitter to emit a LiFi signal and controlling the currently working LiFi receiver to receive the LiFi signal through the LiFi control module;
and controlling the LiFi emitter to emit detection light through the TOF control module for flight time ranging, and performing distance detection according to reflected light of the detection light received by the currently working LiFi receiver to generate a detection distance.
5. The method of LiFi control of a mobile terminal of claim 4, wherein said plurality of differently oriented LiFi receivers comprises an array of pixels, said method further comprising:
and controlling a part of pixels in the pixel array of the currently working LiFi receiver to receive light rays through the light fidelity LiFi controller so as to realize angle adjustment of the received light rays.
6. An apparatus for controlling an optical fidelity, LiFi, of a mobile terminal, wherein the mobile terminal comprises a plurality of differently oriented LiFi receivers, the apparatus comprising:
the detection module is used for detecting the signal intensity of the currently working LiFi receiver;
the judging module is used for judging whether switching is needed according to the signal intensity of the currently working LiFi receiver;
the sending module is used for sending polling requests to the plurality of LiFi receivers in the non-working state when the LiFi receivers need to be switched;
the acquisition module is used for acquiring the signal intensity of the plurality of LiFi receivers in the non-working state; and
and the switching module is used for selecting a switching target to switch according to the signal intensity of the plurality of LiFi receivers in the non-working state.
7. The apparatus of claim 6, wherein the switching module comprises:
an acquisition unit, configured to acquire a posture of the mobile terminal;
the judging unit is used for judging whether the mobile terminal is in a stable state or not according to the posture of the mobile terminal;
and the switching unit is used for selecting the LiFi receiver with the strongest signal intensity from the plurality of LiFi receivers in the non-working state to switch when the mobile terminal is in the stable state.
8. The LiFi control apparatus of a mobile terminal as claimed in claim 6, wherein the detecting module is specifically configured to:
acquiring a LiFi signal of the LiFi receiver which is currently working and converting the LiFi signal into an electric signal;
and converting the electric signal into an intermediate frequency signal, and acquiring the signal to noise ratio of the intermediate frequency signal, wherein the signal to noise ratio of the intermediate frequency signal is the signal intensity.
9. The LiFi control apparatus of a mobile terminal as claimed in claim 6, wherein said mobile terminal further comprises a LiFi transmitter, said apparatus further comprising a light fidelity LiFi control module connected to said LiFi transmitter and said plurality of differently oriented LiFi receivers, respectively, and a time of flight ranging TOF control module connected to said LiFi transmitter and said plurality of differently oriented LiFi receivers, respectively;
the light fidelity LiFi control module is used for controlling the LiFi emitter to emit a LiFi signal and controlling the LiFi receiver which works currently to receive the LiFi signal;
and the TOF control module is used for controlling the LiFi emitter to emit detection light and carrying out distance detection according to reflected light of the detection light received by the currently working LiFi receiver so as to generate a detection distance.
10. The LiFi control apparatus of the mobile terminal as claimed in claim 9, wherein the plurality of differently oriented LiFi receivers comprise an array of pixels, the LiFi control module further for:
and controlling a part of pixels in the pixel array of the currently working LiFi receiver to receive light so as to realize angle adjustment of the received light.
11. A mobile terminal is characterized by comprising a shell, a processor, a memory, a circuit board, a power circuit and a plurality of LiFi receivers in different orientations; wherein the circuit board is arranged inside a space enclosed by the shell, and the processor and the memory are arranged on the circuit board; the power supply circuit is used for supplying power to each circuit or device of the mobile terminal; the memory is used for storing executable program codes; the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, for performing:
detecting the signal intensity of the currently working LiFi receiver;
judging whether switching is needed according to the signal intensity of the currently working LiFi receiver;
if the switching is needed, sending polling requests to the plurality of non-working LiFi receivers to acquire the signal intensities of the plurality of non-working LiFi receivers; and
and selecting a switching target to switch according to the signal intensity of the plurality of LiFi receivers in the non-working state.
12. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the optical fidelity LiFi control method of a mobile terminal as claimed in any one of the claims 1 to 5.
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