CN112436855A - Data transmission device of mobile terminal and mobile terminal - Google Patents
Data transmission device of mobile terminal and mobile terminal Download PDFInfo
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- CN112436855A CN112436855A CN201910730178.4A CN201910730178A CN112436855A CN 112436855 A CN112436855 A CN 112436855A CN 201910730178 A CN201910730178 A CN 201910730178A CN 112436855 A CN112436855 A CN 112436855A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 126
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- 238000004891 communication Methods 0.000 abstract description 63
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/006—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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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 data transmission device of a mobile terminal and the mobile terminal. Wherein the apparatus comprises: the first baseband protocol processor is connected with the first transceiver and used for generating a WiFi sending signal according to information to be sent; the first transceiver is connected with the radio frequency front-end module and the first LiFi frequency mixing module through the first switch assembly and is used for mixing the generated WiFi sending signal to a first frequency; the first radio frequency front end module is used for sending and receiving WiFi signals of a first frequency; the first LiFi frequency mixing module is used for mixing WiFi sending signals of the first frequency to a second frequency and a third frequency respectively; and the LiFi front-end module is connected with the first LiFi frequency mixing module and is used for sending and receiving a signal obtained by adding the LiFi signal of the second frequency and the LiFi signal of the third frequency. Therefore, the transmission distance and the transmission quality of LiFi communication are improved, and the production cost of the mobile terminal is saved.
Description
Technical Field
The present application relates to the field of electronic technologies, and in particular, to a data transmission device for a mobile terminal and a mobile terminal.
Background
Visible Light wireless communication is also called Light Fidelity (LiFi for short), and is a brand new wireless transmission technology for data transmission by using visible Light spectrum (such as Light emitted by a bulb), and the LiFi technology has the advantages of rapidness, convenience, safety, environmental protection and the like, thereby having wide application prospect.
In the related art, communication between mobile terminals and other devices having the LiFi communication function may be implemented by the LiFi technology. However, since LiFi has directivity and a limited transmission distance, and an additional transceiver and a special lamp need to be added to the mobile terminal, not only the transmission distance and transmission rate of the LiFi communication are limited, but also the production cost of the mobile terminal is increased.
Disclosure of Invention
The application provides a mobile terminal's data transmission device and mobile terminal for among the solution correlation technique, because LiFi has the directionality, transmission distance is limited, need increase extra transceiver and special lamp in mobile terminal moreover, not only make the transmission distance and the transmission rate of LiFi communication limited, increased mobile terminal's manufacturing cost's problem moreover.
An embodiment of an aspect of the present application provides a data transmission apparatus for a mobile terminal, including: the first baseband protocol processor, the first transceiver, the first optical fidelity LiFi frequency mixing module, the first switch component, the first radio frequency front end module and the LiFi front end module; the first baseband protocol processor is connected with the first transceiver and used for generating a wireless fidelity WiFi sending signal according to information to be sent; the first transceiver is respectively connected with the first radio frequency front-end module and the first LiFi frequency mixing module through a first switch component, and is used for mixing the WiFi sending signal generated by the first baseband protocol processor to a first frequency, wherein the first frequency is in a first frequency band; the first radio frequency front end module is used for sending a WiFi sending signal of the first frequency and receiving a WiFi receiving signal of the first frequency when the first radio frequency front end module is connected with the first transceiver through the first switch component; the first LiFi frequency mixing module is used for respectively mixing WiFi sending signals of the first frequency to a second frequency and a third frequency when being connected with the first transceiver through the first switch component so as to generate LiFi sending signals of the second frequency and LiFi sending signals of the third frequency, and adding the LiFi sending signals of the second frequency and the LiFi sending signals of the third frequency; the LiFi front end module is connected with the first LiFi frequency mixing module and used for sending a signal obtained by adding the LiFi sending signal of the second frequency and the LiFi sending signal of the third frequency and receiving a LiFi receiving signal comprising the second frequency and the third frequency.
Another embodiment of the present application provides a mobile terminal, including the data transmission apparatus as described above.
The data transmission device of the mobile terminal and the mobile terminal provided by the embodiment of the application comprise a first baseband protocol processor, a first transceiver, a first LiFi frequency mixing module, a first switch component, a first radio frequency front end module and a LiFi front end module, wherein through the first baseband protocol processor connected with the first transceiver, generating a WiFi sending signal according to information to be sent, mixing the WiFi sending signal to a first frequency through a first transceiver, when a first radio frequency front end module is connected with the first transceiver through a first switch component, the WiFi sending signal of the first frequency is sent through the first radio frequency front end module, and when the first LiFi frequency mixing module is connected with the first transceiver through the first switch component, the WiFi sending signals with the first frequency are respectively mixed to the second frequency and the third frequency through the first LiFi mixing module, and adding the LiFi sending signal of the second frequency and the LiFi sending signal of the third frequency and then sending the added signals through the LiFi front end module. From this, through the multiplexing transceiver of liFi front end module and the radio frequency front end module and baseband protocol treater to need not to increase extra transceiver and special lamp, can realize mobile terminal's liFi communication function, not only improved the transmission distance and the transmission quality of liFi communication, practiced thrift mobile terminal's manufacturing cost moreover.
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 structural diagram of a data transmission apparatus of a mobile terminal according to an embodiment of the present disclosure;
FIG. 2 is a graph showing the spectra of an 80MHz LiFi signal added to a 160MHz LiFi signal;
fig. 3 is a schematic structural diagram of another data transmission apparatus of a mobile terminal according to an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the like or similar elements 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.
The embodiment of the application aims at the problems that in the related art, because LiFi has directivity and is limited in transmission distance, and an additional transceiver and a special lamp need to be added in a mobile terminal, the transmission distance and the transmission rate of LiFi communication are limited, and the production cost of the mobile terminal is increased, and the data transmission device of the mobile terminal is provided.
The data transmission device of the mobile terminal provided by the embodiment of the application comprises a first baseband protocol processor, a first transceiver, a first LiFi frequency mixing module, a first switch component, a first radio frequency front end module and a LiFi front end module, wherein through the first baseband protocol processor connected with the first transceiver, generating a WiFi sending signal according to information to be sent, mixing the WiFi sending signal to a first frequency through a first transceiver, when a first radio frequency front end module is connected with the first transceiver through a first switch component, the WiFi sending signal of the first frequency is sent through the first radio frequency front end module, and when the first LiFi frequency mixing module is connected with the first transceiver through the first switch component, the WiFi sending signals with the first frequency are respectively mixed to the second frequency and the third frequency through the first LiFi mixing module, and adding the LiFi sending signal of the second frequency and the LiFi sending signal of the third frequency and then sending the added signals through the LiFi front end module. From this, through the multiplexing transceiver of liFi front end module and the radio frequency front end module and baseband protocol treater to need not to increase extra transceiver and special lamp, can realize mobile terminal's liFi communication function, not only improved the transmission distance and the transmission quality of liFi communication, practiced thrift mobile terminal's manufacturing cost moreover.
The data transmission apparatus of the mobile terminal and the mobile terminal provided in the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a data transmission device of a mobile terminal according to an embodiment of the present disclosure.
As shown in fig. 1, the data transmission apparatus of the mobile terminal includes: the first baseband protocol processor, the first transceiver, the first LiFi frequency mixing module, the first switch component, the first radio frequency front end module and the LiFi front end module.
The first baseband protocol processor is connected with the first transceiver and used for generating a wireless fidelity WiFi sending signal according to information to be sent;
the first transceiver is respectively connected with the radio frequency front-end module and the first LiFi frequency mixing module through the first switch assembly and is used for mixing the WiFi sending signal generated by the first baseband protocol processor to a first frequency, wherein the first frequency is in a first frequency band;
the first radio frequency front end module is used for sending a WiFi sending signal of a first frequency and receiving a WiFi receiving signal of the first frequency when the first radio frequency front end module is connected with the first transceiver through the first switch component;
the first LiFi frequency mixing module is used for respectively mixing WiFi sending signals of the first frequency to a second frequency and a third frequency when being connected with the first transceiver through the first switch component so as to generate LiFi sending signals of the second frequency and LiFi sending signals of the third frequency, and adding the LiFi sending signals of the second frequency and the LiFi sending signals of the third frequency;
the LiFi front end module is connected with the first LiFi frequency mixing module and used for sending a signal obtained by adding a LiFi sending signal with a second frequency and a LiFi sending signal with a third frequency and receiving a LiFi receiving signal comprising the second frequency and the third frequency.
In the embodiment of the present application, the mobile terminal may be a hardware device having various operating systems, touch screens and/or display screens, such as a mobile phone, a tablet computer, a personal digital assistant, a wearable device, and the like.
It should be noted that Light Fidelity (LiFi for short) technology is a lighting internet access technology, and Light emitted by an LED lighting lamp is used as a transmission tool for network signals to perform data transmission, so as to implement lighting 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.
The bottom layer of the LiFi protocol is compatible with the WiFi802.11 baseband, when data are transmitted, one-to-many or many-to-one simultaneous transmission can be realized by using the TDD protocol in the WiFi, and the Li-Fi technology has extremely high safety when the data are transmitted, because visible light can only be transmitted along a straight line, only people on the light transmission straight line can capture information. And because the low time delay of LiFi, can use in the scene that needs the data of quick transmission, for example share the file fast, exchange business card contact means, watch video jointly etc..
In the embodiment of the present application, a radio frequency Front End Module (Front End Module, abbreviated as FEM) is used for implementing a WiFi communication function of the mobile terminal, and the LiFi mixing Module and the LiFi Front End Module are used for implementing a LiFi communication function of the mobile terminal. In the embodiment of the present application, the first rf front-end module and the LiFi front-end module share the first transceiver and the first baseband protocol processor, and are controlled by the switch component, so that the WiFi and the LiFi share the baseband and the transceiver.
As a possible implementation manner, the first transceiver may mix the WiFi transmission signal through the local oscillation signal, so that the frequency of the WiFi transmission signal is in the working frequency band of the WiFi communication. Specifically, the first transceiver may mix a WiFi transmission signal to a first frequency through a Local Oscillator (LO) signal of the first frequency, where the first frequency is in a first frequency band.
It should be noted that the first frequency band is a frequency range, and may be determined according to an operating frequency band of WiFi communication, which is not limited in this embodiment of the present application.
In the embodiment of the application, because the frequency of the WiFi transmission signal is much greater than the frequency of the LiFi transmission signal, in order to realize the LiFi communication function by sharing the baseband protocol processor and the transceiver of the WiFi system architecture, the WiFi transmission signal of the first frequency generated by the first transceiver may be further mixed by the first LiFi mixing module, so as to obtain the LiFi transmission signal of which the signal frequency is suitable for the LiFi communication.
Specifically, the first LiFi frequency mixing module may mix the WiFi transmission signal of the first frequency generated by the first transceiver to the second frequency through the local oscillation signal of the second frequency, and mix the WiFi transmission signal of the first frequency to the third frequency through the local oscillation signal of the second frequency and an Intermediate Frequency (IF) signal. That is, in a possible implementation form of the embodiment of the present application, the first LiFi mixing module may be further configured to:
the method comprises the steps of dividing WiFi sending signals of first frequency into a first branch circuit and a second branch circuit, mixing the WiFi sending signals in the first branch circuit and the second branch circuit to second frequency through local oscillation signals of the second frequency to generate two LiFi sending signals of the second frequency, mixing LiFi sending signals of the second frequency corresponding to the WiFi sending signals in the second branch circuit to a third frequency through a first intermediate frequency signal, and generating one LiFi sending signal of the third frequency, wherein the third frequency is larger than the second frequency.
Preferably, in order to fully utilize the bandwidth and improve the quality of the LiFi communication, the LiFi transmission signals with multiple frequencies may be generated and transmitted in combination, while the LiFi transmission signals with multiple frequencies generated by mixing the WiFi transmission signals generally require multiple local oscillation signals, so that the number of components in the mobile terminal is increased, which is not beneficial to the miniaturization and the lightness of the mobile terminal. Therefore, in the embodiment of the present application, when frequency mixing is performed on WiFi transmission information to generate a LiFi transmission signal, the first LiFi frequency mixing module may generate two paths of signals according to the WiFi transmission signal, that is, the first branch and the second branch, wherein the WiFi transmission signal in the first branch and the WiFi transmission signal in the second branch may be the same, and first mix the two paths of WiFi transmission signals to the second frequency through the LO signal of the second frequency, respectively, and then mix the LiFi transmission signal of the second frequency corresponding to the WiFi transmission signal in the second branch to the third frequency through the first intermediate frequency signal, so that in a manner of combining the LO signal and the intermediate frequency signal, the LiFi transmission signals of two frequencies can be obtained only through one LO signal, and the number of components in the mobile terminal is reduced.
As a possible implementation manner, since the WiFi communication function and the LiFi communication function of the mobile terminal share the baseband protocol processor and the transceiver, and after the transceiver, the processing of the WiFi communication function is different from the processing of the LiFi communication function on the signal, in a possible implementation form of the embodiment of the present application, the switch component can be used to control the connection between the first transceiver and the first rf front end module and the connection between the first transceiver and the first LiFi mixing module, so as to implement the distinguishing operation between the WiFi communication function and the LiFi communication function.
Specifically, when the first transceiver is connected to the first rf front-end module through the first switch component, the first rf front-end module may directly transmit a WiFi transmission signal of a first frequency generated by the first transceiver, and receive a WiFi reception signal of the first frequency; when first transceiver links to each other through first switch assembly and first LiFi frequency mixing module, first LiFi frequency mixing module can further mix the wiFi of the first frequency that first transceiver generated, LiFi send signal with the third frequency of second frequency sends the signal, and LiFi send signal with the second frequency of second frequency and the LiFi send signal of third frequency add, and then send through the LiFi front end module, can receive the LiFi received signal including second frequency and third frequency through the LiFi front end module simultaneously.
Optionally, a closing mode of the first switch component (that is, whether the first transceiver is currently connected to the first rf front-end module or the first LiFi mixing module) may be determined according to a currently-turned-on communication mode in the mobile terminal. Specifically, a currently started communication mode in the mobile terminal can be acquired from system information of the mobile terminal, and if the currently started communication mode in the mobile terminal is a WiFi communication mode, it can be determined that the first switch component is conducted with the first radio frequency front end module, that is, the first transceiver is currently connected with the first radio frequency front end module; if the currently started communication mode in the mobile terminal is the LiFi communication mode, it can be determined that the first switch assembly is conducted with the first LiFi frequency mixing module, that is, the first transceiver is currently connected with the first LiFi frequency mixing module.
The data transmission device of the mobile terminal in the embodiment of the application can automatically identify the currently opened communication mode of the mobile terminal according to the system information of the mobile terminal, if the currently opened communication mode in the mobile terminal is the WiFi communication mode, the first baseband protocol processor can generate a WiFi sending signal according to the acquired information to be sent through digital-to-analog conversion, the first transceiver mixes the WiFi sending signal to the first frequency through the LO signal of the first frequency, amplifies the Power of the mixed WiFi signal through a Power Amplifier (PA) in the first radio frequency front end module, and then sends out the mixed and amplified WiFi signal through the transmitting antenna.
It should be noted that a PA may be included in the first rf front-end module to amplify the power of the WiFi signal to be large enough (for example, 20dBm) to meet the requirements of the WiFi communication protocol.
Correspondingly, if the currently opened communication mode in the mobile terminal is the LiFi communication mode, the first LiFi mixing module can divide WiFi sending information of the first frequency generated by the first transceiver into two paths of signals, mix WiFi sending signals in the two paths to the second frequency through the LO signal of the second frequency, mix LiFi sending signals of the second frequency corresponding to the WiFi sending signals in the second path to the third frequency through the first intermediate frequency signal, add the LiFi sending signals of the second frequency and the LiFi sending signals of the third frequency, and send the LiFi sending information out through the transmitting laser in the LiFi front-end module. The Emitting Laser in the LiFi front end module may be a Vertical Cavity Surface Emitting Laser (VCSEL), but is not limited thereto.
It should be noted that the first frequency band may be a 2.4GHz band, the second frequency band may be 80MHz, and the third frequency band may be 160MHz, but is not limited thereto. The 2.4GHz frequency band is a WiFi public frequency band, and the 80MHz and the 160MHz are smaller than 200MHz, so that the time rising edge and falling edge requirements of the VCSEL are met.
It can be understood that, after the two branched LiFi transmission signals are respectively mixed to the second frequency and the third frequency to generate the LiFi transmission signal of the second frequency and the LiFi transmission signal of the third frequency, the two branched LiFi transmission signals are equivalent to that different carrier waves are used, so that frequency spectrums after the LiFi transmission signal of the second frequency and the LiFi signal of the third frequency are added do not overlap, and the LiFi transmission signals can be transmitted through the same LiFi front-end module, as shown in fig. 2, which is a schematic diagram of a frequency spectrum after the LiFi signal of 80MHz and the LiFi signal of 160MHz are added.
Further, the data transmission device of the mobile terminal in the embodiment of the application can also acquire WiFi information or LiFi information sent by other devices. That is, in a possible implementation form of the embodiment of the present application, the first LiFi mixing module may be further configured to:
and acquiring the LiFi receiving signals which are received by the LiFi front end module and comprise the second frequency and the third frequency, and restoring the LiFi receiving signals which comprise the second frequency and the third frequency to the first frequency and sending the LiFi receiving signals to the first transceiver.
Accordingly, the first transceiver may be further configured to:
when the first switch assembly is connected with the first radio frequency front end module, the WiFi receiving signal of the first frequency received by the first radio frequency front end module is obtained, the WiFi receiving signal of the first frequency is subjected to frequency reduction to baseband frequency, and the first baseband protocol processor is sent to the WiFi receiving signal of the first frequency;
and when the first switch component is connected with the first LiFi frequency mixing module, obtaining a LiFi receiving signal which is sent by the first LiFi frequency mixing module and comprises the first frequency, reducing the LiFi receiving signal of the first frequency to a baseband frequency, and sending the LiFi receiving signal of the first frequency to the first baseband protocol processor.
As shown in fig. 1, when the first transceiver is connected to the first rf front-end module through the first switch component, if the first rf front-end module receives a WiFi received signal at a first frequency, the first transceiver may amplify the signal power of the obtained WiFi received signal through a Low Noise Amplifier (LNA) in the first rf front-end module to improve the received signal quality, and then the first transceiver may down-convert the WiFi received signal to a baseband frequency through the LO signal at the first frequency, and send the down-converted WiFi received signal to the first baseband protocol processor, thereby completing receiving of WiFi information.
Correspondingly, when the first transceiver is connected with the first LiFi frequency mixing module through the first switch assembly, if the LiFi front end module receives the LiFi receiving information mixed by the second frequency and the third frequency, the LiFi receiving information can be received through a Photo diode (PD for short) in the LiFi front end module, and then the LiFi receiving signal is separated into one LiFi receiving signal of the second frequency and one LiFi receiving signal of the third frequency through the first LiFi frequency mixing module, and the two LiFi receiving signals are respectively reduced, so that the two LiFi receiving signals are reduced to the first frequency and are sent to the first transceiver, and then the LiFi receiving signal reduced to the first frequency is reduced to the baseband frequency through the first transceiver, and the reduced LiFi receiving signal is sent to the first baseband protocol processor, thereby completing the reception of the LiFi information.
Specifically, when the LiFi front end module receives the LiFi receiving information mixed by the second frequency and the third frequency for the reduction, the first LiFi mixing module may separate the obtained LiFi receiving signal including the second frequency and the third frequency into one LiFi receiving signal of the second frequency and one LiFi receiving signal of the third frequency, reduce the LiFi receiving signal of the second frequency to the first frequency by the local oscillator signal of the second frequency, reduce the LiFi receiving signal of the third frequency to the second frequency by the first intermediate frequency signal, and reduce the LiFi receiving signal of the second frequency to the first frequency by the local oscillator signal of the second frequency.
The data transmission device of the mobile terminal provided by the embodiment of the application comprises a first baseband protocol processor, a first transceiver, a first LiFi frequency mixing module, a first switch component, a first radio frequency front end module and a LiFi front end module, wherein through the first baseband protocol processor connected with the first transceiver, generating a WiFi sending signal according to information to be sent, mixing the WiFi sending signal to a first frequency through a first transceiver, when a first radio frequency front end is connected with the first transceiver through a first switch component, the WiFi sending signal of the first frequency is sent through the first radio frequency front end module, and when the first LiFi frequency mixing module is connected with the first transceiver through the first switch component, the WiFi sending signals with the first frequency are respectively mixed to the second frequency and the third frequency through the first LiFi mixing module, and adding the LiFi sending signal of the second frequency and the LiFi sending signal of the third frequency and then sending the added signals through the LiFi front end module. From this, through the multiplexing transceiver of liFi front end module and the radio frequency front end module and baseband protocol treater to need not to increase extra transceiver and special lamp, can realize mobile terminal's liFi communication function, not only improved the transmission distance and the transmission quality of liFi communication, practiced thrift mobile terminal's manufacturing cost moreover.
In one possible implementation form of the present application, a WiFi transmission signal and a LiFi transmission signal may be respectively mixed to Multiple frequencies by using Multiple channels through a Multiple-Input Multiple-Output (MIMO) technology, and the obtained WiFi transmission signals of the Multiple frequencies are respectively transmitted, and the LiFi transmission signals of the Multiple frequencies are combined and transmitted, so as to improve the quality of WiFi communication or LiFi communication.
The data transmission apparatus of the mobile terminal according to the embodiment of the present application is further described with reference to fig. 3.
Fig. 3 is a schematic structural diagram of another data transmission apparatus of a mobile terminal according to an embodiment of the present disclosure.
As shown in fig. 3, based on the embodiment shown in fig. 1, the data transmission apparatus of the mobile terminal further includes: the second baseband protocol processor, the second transceiver, the second LiFi frequency mixing module, the second switch component and the second RF front-end module.
The second baseband protocol processor is connected with the second transceiver and used for generating a WiFi sending signal according to information to be sent;
the second transceiver is respectively connected with the second radio frequency front-end module and the second LiFi frequency mixing module through a second switch assembly and is used for mixing the WiFi sending signal to a fourth frequency, wherein the fourth frequency is in a second frequency band;
the second radio frequency front-end module is also used for sending a WiFi sending signal of a fourth frequency and receiving a WiFi receiving signal of the first frequency when the second radio frequency front-end module is connected with the second transceiver through the second switch component;
the second LiFi frequency mixing module is used for respectively mixing WiFi sending signals of a fourth frequency to a fifth frequency and a sixth frequency when the second LiFi frequency mixing module is connected with the second transceiver through the second switch assembly so as to generate LiFi sending signals of the fifth frequency and LiFi sending signals of the sixth frequency, and the LiFi sending signals of the fifth frequency and the LiFi sending signals of the sixth frequency are added;
the LiFi front end module is connected with the second LiFi frequency mixing module and used for sending a signal obtained by adding a LiFi sending signal with a fifth frequency and a LiFi sending signal with a sixth frequency and receiving a LiFi receiving signal comprising the fifth frequency and the sixth frequency.
It should be noted that the second frequency band is a frequency range, and may be determined according to an operating frequency band of WiFi communication, the second frequency band may be a 5GHz frequency band, the fifth frequency band may be 280MHz, and the sixth frequency band may be 360MHz, but is not limited thereto, where the 2.4GHz frequency band and the 5GHz frequency band are public frequency bands of WiFi.
As a possible implementation manner, the WiFi transmission signal and the LiFi transmission signal may be respectively mixed to a plurality of frequencies through a plurality of channels by the MIMO technology, so as to improve the transmission quality of the WiFi communication and the LiFi communication. After the WiFi signal is mixed to the first frequency through the first baseband protocol processing in the channel 1 and the LO signal of the first frequency by the first transceiver, a WiFi sending signal can be generated according to the acquired information to be sent through the second baseband protocol processor in the channel 2 at the same time, the second transceiver is controlled to mix the WiFi sending signal to the fourth frequency through the LO signal of the fourth frequency, the power of the mixed WiFi signal is amplified through the PA in the second radio frequency front end module, and then the mixed and amplified WiFi sending signals of the first frequency and the fourth frequency in the two channels are sent out through the transmitting antennas in the channel 1 and the channel 2 respectively.
Correspondingly, as shown in fig. 3, after the first LiFi mixing module in the channel 1 mixes the WiFi transmission signal with the first Frequency in the first branch to the second Frequency through the LO signal with the second Frequency, and mixes the WiFi transmission signal with the first Frequency in the second branch to the third Frequency through the LO signal with the second Frequency and the first Intermediate Frequency, the second LiFi mixing module in the channel 2 may also simultaneously generate two paths of signals according to the obtained WiFi transmission signal with the fourth Frequency generated by the second transceiver, mix the WiFi transmission signal in one branch to the fifth Frequency through the LO signal with the fifth Frequency, and mix the WiFi transmission signal in the other branch to the sixth Frequency through the local oscillator signal with the fifth Frequency and the second Intermediate Frequency (IF) signal. That is, in a possible implementation form of the embodiment of the present application, the second LiFi mixing module may be further configured to:
dividing the WiFi sending signal of the fourth frequency into a third branch circuit and a fourth branch circuit, mixing the WiFi sending signals in the third branch circuit and the fourth branch circuit to a fifth frequency through a local oscillator signal of a fifth frequency to generate two LiFi sending signals of the fifth frequency, and further mixing the LiFi sending signals of the fifth frequency corresponding to the WiFi sending signals in the fourth branch circuit to a sixth frequency through a second intermediate frequency signal to generate one LiFi sending signal of the sixth frequency.
Preferably, in order to fully utilize the bandwidth and improve the quality of the LiFi communication, the LiFi transmission signals with multiple frequencies may be generated and transmitted in combination, while the LiFi transmission signals with multiple frequencies generated by mixing the WiFi transmission signals generally require multiple local oscillation signals, so that the number of components in the mobile terminal is increased, which is not beneficial to the miniaturization and the lightness of the mobile terminal. Therefore, in the embodiment of the present application, when frequency mixing is performed on WiFi transmission information to generate a LiFi transmission signal, the second LiFi frequency mixing module may generate two paths of signals according to the WiFi transmission signal, that is, the third branch and the fourth branch, wherein the WiFi transmission signal in the third branch and the WiFi transmission signal in the fourth branch may be the same, and first mix the two paths of WiFi transmission signals to the fifth frequency through the LO signal of the fifth frequency, respectively, and then mix the LiFi transmission signal of the fifth frequency corresponding to the WiFi transmission signal in the fourth branch to the sixth frequency through the second intermediate frequency signal, so that in a manner of combining the LO signal and the intermediate frequency signal, the LiFi transmission signals of four frequencies can be obtained only through two LO signals, and the number of components in the mobile terminal is reduced.
As a possible implementation manner, since the WiFi communication function and the LiFi communication function of the mobile terminal share the baseband protocol processor and the transceiver, and after the transceiver, the processing of the WiFi communication function is different from the processing of the LiFi communication function on the signal, in a possible implementation form of the embodiment of the present application, the second switch component can control the connection between the second transceiver and the second rf front end module and the second LiFi mixing module, so as to implement the operation difference between the WiFi communication function and the LiFi communication function.
Specifically, when the second transceiver is connected to the second rf front-end module through the second switch component, the second rf front-end module may directly transmit a WiFi transmission signal of a fourth frequency generated by the second transceiver, and receive a WiFi reception signal of the fourth frequency; when the second transceiver passes through the second switch assembly and links to each other with second LiFi frequency mixing module, second LiFi frequency mixing module can further mix the wiFi of the fourth frequency that the second transceiver generated sends the signal, in order to generate the LiFi send signal of fifth frequency and the LiFi send signal of sixth frequency, and LiFi send signal of the fifth frequency that will generate and the LiFi send signal of sixth frequency add, and then send through LiFi front end module, can receive the LiFi received signal including fifth frequency and sixth frequency through LiFi front end module simultaneously.
Optionally, a closing mode of the second switch component (that is, whether the second transceiver is currently connected to the second rf front-end module or the second LiFi mixing module) may be determined according to a currently-turned-on communication mode in the mobile terminal. Specifically, the currently started communication mode in the mobile terminal can be obtained from the system information of the mobile terminal, and if the currently started communication mode in the mobile terminal is the WiFi communication mode, it can be determined that the second switch component is conducted with the second radio frequency front end module, that is, the second transceiver is currently connected with the second radio frequency front end module; if the currently started communication mode in the mobile terminal is the LiFi communication mode, it can be determined that the second switch assembly is conducted with the second LiFi mixing module, that is, the second transceiver is currently connected with the second LiFi mixing module.
It should be noted that the closing modes of the first switch component and the second switch component are the same, that is, when the first switch component is conducted with the first radio frequency front end module (the first transceiver is connected with the first radio frequency module), the second switch component is also conducted with the second radio frequency module (the second transceiver is connected with the second radio frequency module); when the first switch component is conducted with the first LiFi frequency mixing module (the first transceiver is connected with the first LiFi frequency mixing module), the second switch component is also conducted with the second LiFi frequency mixing module (the second transceiver is connected with the second LiFi frequency mixing module).
Optionally, after obtaining the LiFi sending signal of the fifth frequency and the LiFi sending signal of the sixth frequency, the LiFi front end module may mix the LiFi sending signal of the fifth frequency with the LiFi sending signal of the sixth frequency, and send out the mixed LiFi signal containing two frequency bands through the VCSEL; or, the LiFi front-end module may further mix the LiFi transmission signal of the second frequency, the LiFi transmission signal of the third frequency, the LiFi transmission signal of the fifth frequency with the LiFi transmission signal of the sixth frequency, and transmit the mixed LiFi signal including the four frequency bands through the VCSEL.
Further, when the WiFi communication and the LiFi communication are realized through the MIMO technology, the data transmission device of the mobile terminal of the present application can receive WiFi receiving information and LiFi receiving information of a plurality of frequencies as well. That is, in a possible implementation form of the embodiment of the present application, the second LiFi mixing module may be further configured to:
and acquiring the LiFi receiving signals which are received by the LiFi front end module and comprise the fifth frequency and the sixth frequency, and restoring the LiFi receiving signals which comprise the fifth frequency and the sixth frequency to the fourth frequency and sending the LiFi receiving signals to the second transceiver.
Accordingly, the second transceiver may be further configured to:
when the second switch assembly is connected with the second radio frequency front end module, the WiFi receiving signal of the fourth frequency received by the second radio frequency front end module is obtained, the WiFi receiving signal of the fourth frequency is subjected to frequency reduction to baseband frequency, and the WiFi receiving signal of the fourth frequency is sent to the second baseband protocol processor;
and when the second switch component is connected with the second LiFi frequency mixing module, obtaining the LiFi receiving signal which is sent by the first LiFi frequency mixing module and is reduced to the fourth frequency, reducing the LiFi receiving signal of the fourth frequency to the baseband frequency, and sending the LiFi receiving signal of the fourth frequency to the second baseband protocol processor.
In this embodiment, the first rf front-end module and the second rf front-end module may respectively receive WiFi receiving signals of the first frequency and the fourth frequency, and perform frequency reduction on the WiFi receiving signals of the first frequency and the WiFi receiving signals of the fourth frequency through the first transceiver and the second transceiver. Specifically, if the first rf front-end module receives WiFi reception information at a first frequency, the low noise amplifier LNA in the first rf front-end module of the channel 1 may amplify the signal power of the obtained WiFi reception signal to improve the received signal quality, and further down-convert the WiFi reception signal to a baseband frequency by the first transceiver, and send the down-converted WiFi reception signal to the first baseband protocol processor; if the second radio frequency front end module receives the WiFi receiving information of the fourth frequency, the LNA in the second radio frequency front end module of the channel 2 can amplify the signal power of the obtained WiFi receiving signal to improve the received signal quality, and then the WiFi receiving signal is down-converted to the baseband frequency by the second transceiver, and the down-converted WiFi receiving signal is sent to the second baseband protocol processor, so that the WiFi information is received.
Accordingly, the LiFi front end module may receive the LiFi receiving signal of the second frequency, the third frequency, the fifth frequency, and the sixth frequency. Specifically, after the LiFi front end module acquires the LiFi receiving signal mixed with the second frequency, the third frequency, the fifth frequency and the sixth frequency, the LiFi receiving information mixed with the second frequency, the third frequency, the fifth frequency and the sixth frequency can be decomposed into the LiFi receiving signal mixed with the second frequency and the third frequency and the LiFi receiving signal mixed with the fifth frequency and the sixth frequency by the PD, the LiFi receiving signal mixed with the second frequency and the third frequency can be separated into one LiFi receiving signal of the second frequency and one LiFi receiving signal of the third frequency by the first LiFi mixing module, the LiFi receiving signal of the second frequency can be restored to the first frequency by the local oscillator signal of the second frequency, the LiFi receiving signal of the third frequency can be down-converted to the second frequency by the first intermediate frequency signal, and the LiFi receiving signal down-converted to the second frequency can be restored to the first frequency by the local oscillator signal of the second frequency, and then the two reduced LiFi receiving signals are sent to the first transceiver, so that the first transceiver reduces the LiFi receiving signals of the first frequency to baseband frequency through the LO signals of the first frequency, and sends the reduced LiFi receiving signals to the first baseband protocol processor.
Correspondingly, the second transceiver can separate the LiFi receiving signal mixed by the fifth frequency and the sixth frequency into one LiFi receiving signal of the fifth frequency and one LiFi receiving signal of the sixth frequency, and the LiFi receiving signal of the fifth frequency is reduced to the fourth frequency by the local oscillator signal of the fifth frequency, and the LiFi receiving signal of the sixth frequency is reduced to the fifth frequency by the second intermediate frequency signal, and the LiFi receiving signal of the fifth frequency is reduced to the fourth frequency by the local oscillator signal of the fifth frequency, and then the two reduced LiFi receiving signals are sent to the second transceiver, so that the second transceiver reduces the LiFi receiving signal of the fourth frequency to the baseband frequency by the LO signal of the fourth frequency, and sends the LiFi receiving signal after frequency reduction to the second baseband protocol processor, thereby completing the reception of the LiFi information.
The data transmission device of the mobile terminal provided by the embodiment of the application comprises a plurality of baseband protocol processors, a plurality of transceivers, a plurality of LiFi frequency mixing modules, a plurality of switch assemblies, a plurality of radio frequency front end modules and a LiFi front end module, wherein through the plurality of baseband protocol processors respectively connected with the transceivers, generating a WiFi transmission signal according to information to be transmitted, mixing the WiFi transmission signal to a plurality of frequencies through a plurality of transceivers, and when the plurality of rf front-end modules are connected to the plurality of transceivers through the plurality of switch modules, the WiFi sending signals with a plurality of frequencies are respectively sent through the plurality of radio frequency front end modules, and when the plurality of LiFi mixing modules are connected with the plurality of transceivers through the plurality of switch modules, the WiFi sending signals of each frequency are respectively mixed to a plurality of frequencies through a plurality of LiFi mixing modules, and adding the LiFi sending signals of a plurality of frequencies and sending the signals through the LiFi front end module. From this, through the multiplexing a plurality of transceivers of liFi front end module and the multiplexing a plurality of baseband protocol treater of radio frequency front end module to not only need not to increase extra transceiver and special lamp, can realize mobile terminal's liFi communication function, improved the transmission distance and the transmission quality of liFi communication, practiced thrift mobile terminal's manufacturing cost, further improved the data transmission rate of liFi communication moreover.
In order to implement the foregoing embodiments, the present application further provides a mobile terminal including the data transmission apparatus as described above.
The mobile terminal provided in the embodiment of the present application includes the aforementioned data transmission device, which includes a first baseband protocol processor, a first transceiver, a first LiFi mixing module, a first switch component, a first rf front end module, and a LiFi front end module, and the first baseband protocol processor connected to the first transceiver, generating a WiFi sending signal according to information to be sent, mixing the WiFi sending signal to a first frequency through a first transceiver, when a first radio frequency front end module is connected with the first transceiver through a first switch component, the WiFi sending signal of the first frequency is sent through the first radio frequency front end module, and when the first LiFi frequency mixing module is connected with the first transceiver through the first switch component, the WiFi sending signals with the first frequency are respectively mixed to the second frequency and the third frequency through the first LiFi mixing module, and adding the LiFi sending signal of the second frequency and the LiFi sending signal of the third frequency and then sending the added signals through the LiFi front end module. From this, through the multiplexing transceiver of liFi front end module and the radio frequency front end module and baseband protocol treater to need not to increase extra transceiver and special lamp, can realize mobile terminal's liFi communication function, not only improved the transmission distance and the transmission quality of liFi communication, practiced thrift mobile terminal's manufacturing cost moreover.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (13)
1. A data transmission apparatus of a mobile terminal, comprising: the first baseband protocol processor, the first transceiver, the first optical fidelity LiFi frequency mixing module, the first switch component, the first radio frequency front end module and the LiFi front end module;
the first baseband protocol processor is connected with the first transceiver and used for generating a wireless fidelity WiFi sending signal according to information to be sent;
the first transceiver is respectively connected with the radio frequency front-end module and the first LiFi frequency mixing module through a first switch component and is used for mixing the WiFi sending signal generated by the first baseband protocol processor to a first frequency, wherein the first frequency is in a first frequency band;
the first radio frequency front end module is used for sending a WiFi sending signal of the first frequency and receiving a WiFi receiving signal of the first frequency when the first radio frequency front end module is connected with the first transceiver through the first switch component;
the first LiFi frequency mixing module is used for respectively mixing WiFi sending signals of the first frequency to a second frequency and a third frequency when being connected with the first transceiver through the first switch component so as to generate LiFi sending signals of the second frequency and LiFi sending signals of the third frequency, and adding the LiFi sending signals of the second frequency and the LiFi sending signals of the third frequency;
the LiFi front end module is connected with the first LiFi frequency mixing module and used for sending a signal obtained by adding the LiFi sending signal of the second frequency and the LiFi sending signal of the third frequency and receiving a LiFi receiving signal comprising the second frequency and the third frequency.
2. The data transmission device of claim 1, wherein the first LiFi mixing module is further configured to:
the method comprises the steps of dividing WiFi sending signals of first frequency into a first branch circuit and a second branch circuit, mixing the WiFi sending signals in the first branch circuit and the second branch circuit to second frequency through local oscillation signals of the second frequency to generate two LiFi sending signals of the second frequency, and further mixing LiFi sending signals of the second frequency corresponding to the WiFi sending signals in the second branch circuit to third frequency through a first intermediate frequency signal to generate one LiFi sending signal of the third frequency.
3. The data transmission device of claim 1, wherein the first LiFi mixing module is further configured to:
and acquiring the LiFi receiving signals which are received by the LiFi front end module and comprise the second frequency and the third frequency, and restoring the LiFi receiving signals which comprise the second frequency and the third frequency to the first frequency and sending the LiFi receiving signals to the first transceiver.
4. The data transmission apparatus of claim 1, wherein the first transceiver is further configured to:
when the first switch assembly is connected with the first radio frequency front end module, the WiFi receiving signal of the first frequency received by the first radio frequency front end module is obtained, the WiFi receiving signal of the first frequency is subjected to frequency reduction to baseband frequency, and the first baseband protocol processor is sent to the WiFi receiving signal of the first frequency;
and when the first switch assembly is connected with the first LiFi frequency mixing module, obtaining a LiFi receiving signal which is sent by the first LiFi frequency mixing module and is reduced to a first frequency, reducing the LiFi receiving signal of the first frequency to a baseband frequency, and sending the LiFi receiving signal of the first frequency to the first baseband protocol processor.
5. The data transmission apparatus of claim 3, wherein the first LiFi mixing module is further configured to:
separating the obtained LiFi received signals comprising the second frequency and the third frequency into one LiFi received signal comprising the second frequency and one LiFi received signal comprising the third frequency, reducing the LiFi received signal comprising the second frequency to the first frequency through the local oscillator signal comprising the second frequency, reducing the LiFi received signal comprising the third frequency to the second frequency through the first intermediate frequency signal, and reducing the frequency of the LiFi received signal comprising the second frequency to the first frequency through the local oscillator signal comprising the second frequency.
6. The data transmission apparatus of a mobile terminal according to claims 1-5, further comprising: the second baseband protocol processor, the second transceiver, the second LiFi frequency mixing module, the second switch component and the second radio frequency front-end module;
the second baseband protocol processor is connected with the second transceiver and used for generating a WiFi sending signal according to information to be sent;
the second transceiver is respectively connected with the second radio frequency front-end module and the second LiFi frequency mixing module through a second switch assembly and is used for mixing the WiFi sending signal to a fourth frequency, wherein the fourth frequency is in a second frequency band;
the second radio frequency front-end module is further configured to send a WiFi sending signal of the fourth frequency and receive a WiFi receiving signal of the first frequency when connected to the second transceiver through the second switch component;
the second LiFi frequency mixing module is used for respectively mixing the WiFi sending signals of the fourth frequency to a fifth frequency and a sixth frequency when the second LiFi frequency mixing module is connected with the second transceiver through the second switch component so as to generate LiFi sending signals of the fifth frequency and LiFi sending signals of the sixth frequency, and adding the LiFi sending signals of the fifth frequency and the LiFi sending signals of the sixth frequency;
the LiFi front end module is connected with the second LiFi frequency mixing module and used for sending a signal obtained by adding the LiFi sending signal of the fifth frequency and the LiFi sending signal of the sixth frequency and receiving a LiFi receiving signal comprising the fifth frequency and the sixth frequency.
7. The data transmission device of claim 6, wherein the second LiFi mixing module is further configured to:
dividing the WiFi sending signal of the fourth frequency into a third branch circuit and a fourth branch circuit, mixing the WiFi sending signals in the third branch circuit and the fourth branch circuit to a fifth frequency through a local oscillator signal of a fifth frequency to generate two LiFi sending signals of the fifth frequency, and further mixing the LiFi sending signals of the fifth frequency corresponding to the WiFi sending signals in the fourth branch circuit to a sixth frequency through a second intermediate frequency signal to generate one LiFi sending signal of the sixth frequency.
8. The data transmission device of claim 6, wherein the second LiFi mixing module is further configured to:
and acquiring the LiFi receiving signals which are received by the LiFi front end module and comprise the fifth frequency and the sixth frequency, and restoring the LiFi receiving signals which comprise the fifth frequency and the sixth frequency to the fourth frequency and sending the LiFi receiving signals to the second transceiver.
9. The data transmission apparatus of claim 6, wherein the second transceiver is further configured to:
when the second switch assembly is connected with the second radio frequency front end module, the WiFi receiving signal of the fourth frequency received by the second radio frequency front end module is obtained, the WiFi receiving signal of the fourth frequency is subjected to frequency reduction to baseband frequency, and the WiFi receiving signal of the fourth frequency is sent to the second baseband protocol processor;
and when the second switch component is connected with the second LiFi frequency mixing module, obtaining the LiFi receiving signal which is sent by the first LiFi frequency mixing module and is reduced to the fourth frequency, reducing the LiFi receiving signal of the fourth frequency to the baseband frequency, and sending the LiFi receiving signal of the fourth frequency to the second baseband protocol processor.
10. The data transmission device of claim 8, wherein the second LiFi mixing module is further configured to:
separating the obtained LiFi received signals comprising the fifth frequency and the sixth frequency into one LiFi received signal comprising the fifth frequency and one LiFi received signal comprising the sixth frequency, reducing the LiFi received signal comprising the fifth frequency to the fourth frequency through the local oscillator signal comprising the fifth frequency, reducing the LiFi received signal comprising the fifth frequency to the fifth frequency through the second intermediate frequency signal, and reducing the frequency of the LiFi received signal comprising the sixth frequency to the fifth frequency through the local oscillator signal comprising the fifth frequency, and reducing the frequency of the LiFi received signal comprising the fifth frequency to the first frequency through the local oscillator signal comprising the fifth frequency.
11. The data transmission apparatus of the mobile terminal according to claim 6, wherein the second frequency, the third frequency, the fifth frequency, and the sixth frequency are 80MHz, 160MHz, 280MHz, and 360 MHz.
12. The data transmission apparatus of the mobile terminal according to claim 6, wherein the first frequency band and the second frequency band are a 2.4GHz frequency band and a 5GHz frequency band, respectively.
13. A mobile terminal, characterized in that it comprises a data transmission device according to any one of claims 1-12.
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