CN106972871B - Full-duplex wireless communications device, method and mobile terminal - Google Patents
Full-duplex wireless communications device, method and mobile terminal Download PDFInfo
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- CN106972871B CN106972871B CN201710204153.1A CN201710204153A CN106972871B CN 106972871 B CN106972871 B CN 106972871B CN 201710204153 A CN201710204153 A CN 201710204153A CN 106972871 B CN106972871 B CN 106972871B
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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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- 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
- H04B1/54—Circuits using the same frequency for two directions of communication
- H04B1/56—Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1461—Suppression of signals in the return path, i.e. bidirectional control circuits
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The present invention relates to a kind of Full-duplex wireless communications device, method and mobile terminals.Full-duplex wireless communications device includes：Transmitting module, cancellation module, receiving module and double feedback control modules.Transmitting module is coupled to cancellation module under the control of double feedback control modules, using partial transmitting signal as coupled signal；Cancellation module double feedback control modules control under, generation offseting signal is modulated to coupled signal；Receiving module obtains the radiofrequency signal comprising interference signal of Base Transmitter, and is overlapped to radiofrequency signal, offseting signal to eliminate interference signal and generate reception signal；Double feedback control modules generate first control signal and second control signal according to reception signal and preset reference signal, and constantly according to first control signal feedback control transmitting module, according to second control signal feedback control cancellation module, then the intensity of offseting signal is controlled, the elimination to interference signal is realized in receiving module, improves the eradicating efficacy to interference signal.
Description
Technical field
The present invention relates to wireless communication technology fields, eventually more particularly to Full-duplex wireless communications device, method and movement
End.
Background technique
Currently practical wireless communication system generally uses time division duplex (Time Division Duplex, TDD) or frequency
Divide the duplex mode of duplexing (Frequency Division Duplex, FDD).TDD system uses identical frequency spectrum
Resource, but different time-gap carrys out output data.FDD system uses identical time slot, but uses different frequency spectrum resources
Carry out output data.Both duplex modes sacrifice time resource and frequency spectrum during uplink and downlink link is isolated respectively
Resource causes the significant wastage of the resource of frequency spectrum.
It with the development of communication technology, can be using co-channel full duplex (Co-frequency Co-time simultaneously
Duplex, CCFD) technology progress two-way communication, that is, communication terminal can be realized using identical frequency and at the same time receiving and dispatching nothing
Line signal, this is just greatly saved frequency spectrum resource, while can also promote existing traffic rate.But co-channel full duplex simultaneously
The problem of all there is self-interferences in theoretical and engineering, i.e., the signal locally launched outward can send distant transmitter mode
Signal have overlapping on frequency spectrum, can to signal to be received formed self-interference.
Summary of the invention
The embodiment of the present invention provides a kind of Full-duplex wireless communications device, method and mobile terminal, and self-interference may be implemented
The maximum of signal is eliminated, and the eradicating efficacy of interference signal is improved.
A kind of Full-duplex wireless communications device, including：Transmitting module, cancellation module, receiving module and double feedback control moulds
Block；
The transmitting module, for believing under double feedback control module controls, using partial transmitting signal as coupling
Number it is coupled to the cancellation module, and exports the transmitting signal；
The cancellation module, under the double feedback control modules control, be modulated life to the coupled signal
At offseting signal and export to the receiving module；
The receiving module is used to obtain the radiofrequency signal comprising interference signal of Base Transmitter, and believes the radio frequency
Number, offseting signal be overlapped to generate to eliminate the interference signal and receive signal, and by the reception signal export respectively to
Double feedback control modules, receiving end；
Double feedback control modules, which are used to be generated according to the reception signal and preset reference signal, is used for feedback control
The first control signal of the transmitting module and second control signal for cancellation module described in feedback control.
A kind of Full-duplex wireless communications method, which is characterized in that including：
Control transmitting module carries out coupling to partial transmitting signal and generates coupled signal, and exports the transmitting signal；
The coupled signal is modulated and generates offseting signal；
The interference signal in radiofrequency signal is obtained, and the radiofrequency signal, offseting signal are overlapped, is eliminated described dry
It disturbs signal and generates reception signal；
First control signal and the second empty control signal, Zhi Daosuo are generated according to the reception signal and preset reference signal
It states and receives signal in the range of the preset reference signal；Wherein, the first control signal is for controlling the coupling letter
Number the coefficient of coup, the second control signal is used to control the counteracting coefficient of the offseting signal.
A kind of mobile terminal, the mobile terminal include above-mentioned Full-duplex wireless communications device.
Above-mentioned Full-duplex wireless communications device, the reception signal that double feedback control modules are exported according to receiving module can give birth to
At first control signal and second control signal.Double feedback control modules are constantly sent out according to first control signal feedback control
It penetrates module and according to second control signal feedback control cancellation module, then constantly controls the intensity of offseting signal, finally
The elimination to greatest extent to interference signal is realized in receiving module, improves the eradicating efficacy to interference signal.
Detailed description of the invention
Fig. 1 is the structural framing figure of Full-duplex wireless communications device in one embodiment；
Fig. 2 is the structural framing figure of transmitting module in one embodiment；
Fig. 3 is the structural framing figure of receiving module in one embodiment；
Fig. 4 is the structural framing figure of double feedback control modules in one embodiment；
Fig. 5 is the structural framing figure of Full-duplex wireless communications device in another embodiment；
Fig. 6 is the flow chart of Full-duplex wireless communications method in one embodiment；
Fig. 7 is the block diagram of the part-structure of the relevant mobile phone of mobile terminal in one embodiment.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 1 shows the structural framing figure of the Full-duplex wireless communications device provided in one embodiment of the invention, in order to
Convenient for explanation, only parts related to embodiments of the present invention are shown.
The Full-duplex wireless communications device can be applied in point-to-point wireless communication system, such as the systems such as microwave,
Or apply in other full-duplex wireless communication systems, it can also expand and be applied in the communication systems such as honeycomb.
In one embodiment, Full-duplex wireless communications device includes transmitting module 10, cancellation module 20, receiving module 30
With double feedback control modules 40.Wherein, transmitting module 10 can under the control of double feedback control modules 40, by partial transmitting signal
It is coupled to cancellation module 20 as coupled signal, and exports transmitting signal.Cancellation module 20 can be in double feedback control modules 40
It is modulated generation offseting signal under control, to coupled signal and exports to receiving module 30.The receiving module 30 obtains base
Stand transmitting the radiofrequency signal comprising interference signal, and the radiofrequency signal, offseting signal are overlapped and eliminate it is described do
It disturbs signal and generates reception signal, and the reception signal is exported respectively to double feedback control modules 40, receiving end.It is double anti-
Control module 40 is presented to be used for according to the first control for receiving signal and the generation of preset reference signal for feedback control transmitting module 10
Signal processed and second control signal for feedback control cancellation module 20.
Above-mentioned Full-duplex wireless communications device, the reception signal energy that double feedback control modules 40 are exported according to receiving module 30
The first control signal and second control signal enough generated.Double feedback control modules 40 are constantly fed back according to first control signal
It controls transmitting module 10 and according to second control signal feedback control cancellation module 20, then constantly controls offseting signal
Intensity then realizes the elimination to greatest extent to interference signal in receiving module 30, improves the elimination effect to interference signal
Fruit.
In one embodiment, with reference to Fig. 2, transmitting module 10 includes transmitting antenna 110 and directional coupler 120.Orientation
The partial transmitting signal Tx that coupler 120 can export transmitting module 10 carries out coupling generation coupled signal nTx, and (n is coupling
Coefficient), and cancellation module 20 is couple by coupled signal.Wherein, first control signal is used to control the coupling of the coupled signal
Collaboration number that is, the coefficient of coup n in directional coupler 120 can be adjusted according to first control signal, and then controls
The intensity size of coupled signal.After the oriented coupler 120 of the transmitting signal that transmitting module 10 exports output end is handled, by sending out
Penetrate the output of 110 heavenwards of antenna.
Specifically, directional coupler 120 can use strip line directional coupler 120, can also be oriented using microstrip line
Coupler 120.Transmitting antenna 110 can be poliarizing antenna, can also use circulator with the receiving antenna in receiving module 30
Realize the common antenna of multiplexing.
In one embodiment, transmitting module 10 further includes the first low-pass filter 130, first low-pass filter
130 output end is connect with the output end of directional coupler 120, and the transmitting signal that can be exported to output end is filtered place
Reason.
In one embodiment, cancellation module 20 is inverting gain amplifier.Inverting gain amplifier is according to the second control
Signal carries out reverse phase enhanced processing generation offseting signal-nmTx to coupled signal nTx, and (- m is the gain system of inverting gain amplifier
Number).Wherein, second control signal is used to control the counteracting coefficient of the offseting signal, wherein offsetting coefficient is that reverse phase gain is put
The gain coefficient of big device, that is, second control signal can the gain coefficient (- m) to inverting gain amplifier be adjusted.
In one embodiment, cancellation module 20 can also be the mould for including two discrete devices of phase inverter and amplifier
Block.Wherein, after the processing of coupled signal inverted device reverse phase, then generation offseting signal amplified by amplifier.
In one embodiment, with reference to Fig. 3, receiving module 30 includes receiving antenna 210, the superpositing unit being sequentially connected electrically
220 and function sub-unit 230.Receiving antenna 210 can obtain in radiofrequency signal Rx and radiofrequency signal Rx from base station to hair
Penetrate the interference signal qTx that signal Tx generates interference.Specifically, receiving antenna 210 can be poliarizing antenna, or with transmitting
Transmitting antenna 110 in module 10 realizes the common antenna of multiplexing using circulator.If receiving antenna 210, transmitting antenna 110 are equal
Using poliarizing antenna, receiving antenna 210 and transmitting antenna 110 can by it is orthogonal thereto it is polarized in the form of.
The radiofrequency signal Rx and cancellation module comprising interference signal qTx that superpositing unit 220 obtains receiving antenna 210
20 offseting signal-the nmTx generated are overlapped processing, realize the elimination to interference signal, and generate reception signal.
Specifically, superpositing unit 220 can be adder.Adder is the device for generating number sum.Wherein, adder
First input end is connect with receiving antenna 210, and the second input terminal of adder is connect with cancellation module 20, the output end of adder
It is connect with function sub-unit 230.Radiofrequency signal Rx, interference signal qTx and the counteracting that adder can obtain receiving antenna 210
Offseting signal-the nmTx that module 20 generates is overlapped processing, realizes the elimination to interference signal qTx, and generate reception signal
It exports to function sub-unit 230.
Correspondingly, superpositing unit 220 can be combiner, combiner can also believe the radio frequency that receiving antenna 210 obtains
Offseting signal-the nmTx that number Rx, interference signal qTx and cancellation module 20 generate is overlapped processing, and realization is to interference signal
The elimination of qTx, and generate reception signal and export to function sub-unit 230.
Received reception signal is delivered to double feedback control modules 40 respectively, receives signal receiving end by function sub-unit 230.
Specifically, function sub-unit 230 can be power splitter, the wherein output of the input terminal of power splitter and superpositing unit 220
Unit connection, the first output end of power splitter are connect with double feedback control modules 40, and the second output terminal of power splitter and reception are believed
The connection of number input terminal.Power splitter can will receive signal and be delivered to double feedback control modules 40 respectively, receive signal receiving end.It connects
Receiving unit can also be balun, be delivered to double feedback control modules 40 respectively correspondingly, balun can will also receive signal, receive
Signal receiving end.
In one embodiment, receiving module 30 further includes the second low-pass filter 240, second low-pass filtering it is defeated
Enter end to connect with the output end of the function sub-unit 230, for output after being filtered reception signal to reception signal
Receiving end.
In one embodiment, with reference to Fig. 4, double feedback control modules 40 include for micro-control unit 410, comparator 420
With storage unit 430.Wherein, the first input end of comparator 420 is connect with receiving module 30, the second input of comparator 420
End is connect with storage unit 430, and the output end of comparator 420 is connect with the input terminal of micro-control unit 410, micro-control unit
410 output end is connect with receiving module 30, cancellation module 20 respectively.
The preset reference signal obtained in advance is stored in storage unit 430, preset reference signal be in the ideal case,
There is no the received signal strength of self-interference.Comparator 420 is compared processing to received preset reference signal and reception signal,
And output phase answers judging result signal.Micro-control unit 410 generates the first control of control transmitting module 10 with judging result signal
The second control signal of signal processed and control cancellation module 20.
Wherein, the priority of first control signal is higher than the priority of second control signal, and micro-control unit 410 is controlled first
The gain coefficient of inverting gain amplifier processed, wherein the adjusting stepping of gain coefficient is 0.5, then controls the coupling of coupler again
Collaboration number, the adjusting stepping of the coefficient of coup are 0.1.It is also understood that micro-control unit 410 is first to inverting gain amplifier
The control of coarse adjustment is carried out, offseting signal is generated, the control of fine tuning is then carried out to coupler, the offseting signal of generation is carried out thin
It adjusts, the intensity of the control offseting signal so recycled.
In one embodiment, double feedback control modules 40 further include D/A conversion unit 440, D/A conversion unit 440
The analog signal that storage unit 430 stores is converted into the digital signal that comparator 420 can identify, is analyzed for comparator 420
Processing.
In one embodiment, with reference to Fig. 5, Full-duplex wireless communications device includes transmitting antenna 110, directional coupler
120, inverting gain amplifier 30, micro-control unit 410, comparator 420, storage unit 430, adder 220, power splitter 230
With receiving antenna 210.Wherein, the input terminal of directional coupler 120 is connect with output end, the first output end of directional coupler with
Transmitting antenna 110 connects, and the second output terminal of directional coupler 120 is connect with the input terminal of inverting gain amplifier 30.Reverse phase
The output end of gain amplifier 30 is connect with the first output end of adder 220, and the second of receiving antenna 210 and adder 220
Output end connection, the output end of adder 220 are connect with the input terminal of power splitter 230.First output end of power splitter 230 with than
First input end compared with device 420 connects, and the second output terminal of power splitter 230 is connect with signal receiving end is received.Comparator 420
Second input terminal is connect with storage unit 430, and the output end of comparator 420 is connect with micro-control unit 410, micro-control unit
410 the first output end is connect with the control terminal of directional coupler 120, and the second output terminal and reverse phase of micro-control unit 410 increase
The control terminal of beneficial amplifier 30 connects.
Wherein, directional coupler 120 under the first control signal that micro-control unit 410 exports, by partial transmitting signal
Be coupled in inverting gain amplifier 30 as coupled signal, inverting gain amplifier 30 exported in micro-control unit 410
Under the action of two control signals, reverse phase enhanced processing is carried out to coupled signal, and generates offseting signal.Adder 220 can be right
The counteracting letter that the radiofrequency signal Rx comprising interference signal qTx and inverting gain amplifier 30 that receiving antenna 210 obtains are generated
Number-nmTx is overlapped processing, realizes the elimination to interference signal qTx, and generates and receive signal and export to power splitter 230, and
Received reception signal is exported respectively to comparator 420, receiving end by power splitter 230.Comparator 420 is to storage unit 430
In preset reference signal and receive signal and be compared processing, and output phase answers judging result signal.Micro-control unit 410 with
Judging result signal is generated for controlling the first control signal of 120 coefficient of coup of directional coupler and is put for controlling reverse phase gain
The second control signal of 30 gain coefficient of big device (offsetting coefficient).
Wherein, the priority of first control signal is higher than the priority of second control signal, and micro-control unit 410 is controlled first
The gain coefficient of inverting gain amplifier 30 processed, wherein the adjusting stepping of gain coefficient is 0.5, then controls coupler again
The coefficient of coup, the adjusting stepping of the coefficient of coup are 0.1.It is also understood that micro-control unit 410 first amplifies reverse phase gain
Device 30 carries out the control of coarse adjustment, generates offseting signal, and the control of fine tuning is then carried out to coupler, to the offseting signal of generation into
Row fine tuning so recycles, optimizes the intensity of offseting signal, until the signal that the offseting signal of generation can offset interference signal is strong
Degree, until the reception signal for exporting adder 220 is in preset reference range of signal.
The reception signal that above-mentioned Full-duplex wireless communications device is generated by micro-control unit 410 according to adder 220 is not
The coefficient of coup of disconnected feedback regulation directional coupler 120 and the gain coefficient of inverting gain amplifier 30 are realized and are believed interference
Number elimination to greatest extent, improve the eradicating efficacy to interference signal.
In addition, the flow chart shown in fig. 6 for Full-duplex wireless communications method in one embodiment.The embodiment of the present invention is also
A kind of Full-duplex wireless communications method is provided, including：
Step S610：Control transmitting module carries out coupling to partial transmitting signal and generates coupled signal, and exports transmitting letter
Number.
Transmitting module includes transmitting antenna and directional coupler.Transmitting antenna can be poliarizing antenna, can also be with reception
Receiving antenna in module realizes the common antenna of multiplexing using circulator.It sends out the part that control coupler exports transmitting module
It penetrates signal Tx and carries out coupling generation coupled signal nTx (n is the coefficient of coup), wherein can control the coupling in directional coupler
The adjusting of coefficient n, and then control the intensity size of coupled signal.The transmitting signal that control transmitting module exports output end is through fixed
To after coupler processing, exported by transmitting antenna heavenwards.
Step S620：Coupled signal is modulated and generates offseting signal.
It controls inverting gain amplifier and reverse phase enhanced processing generation offseting signal-nmTx is carried out to coupled signal nTx,
In ,-m is the gain coefficient of inverting gain amplifier, and the gain coefficient (- m) of inverting gain amplifier 30 is adjustable.
Step S630：The interference signal in radiofrequency signal is obtained, and the radiofrequency signal, offseting signal are overlapped,
It eliminates the interference signal and generates reception signal.
Receiving antenna 210 is obtained to generate transmitting signal Tx in radiofrequency signal Rx and radiofrequency signal Rx from base station and be done
The interference signal qTx disturbed.Specifically, receiving antenna can be poliarizing antenna, or with the transmitting antenna in transmitting module
The common antenna of multiplexing is realized using circulator.If receiving antenna, transmitting antenna are all made of poliarizing antenna, receiving antenna and transmitting
Antenna can by it is orthogonal thereto it is polarized in the form of.
To receiving antenna obtain the radiofrequency signal Rx comprising interference signal qTx and generation offseting signal-nmTx into
Row superposition processing realizes the elimination to interference signal, and generates reception signal.
Step S640：First control signal and the second empty control letter are generated according to the reception signal and preset reference signal
Number, until the reception signal is in the range of the preset reference signal；Wherein, the first control signal is for controlling institute
The coefficient of coup of coupled signal is stated, the second control signal is used to control the counteracting coefficient of the offseting signal.
Preset reference signal is obtained, and preset reference signal is stored, wherein preset reference signal is in ideal feelings
Under condition, the reception signal of self-interference, preset reference signal do not include the strength information of signal.Preset reference signal is being obtained,
It is the signal in the acquisition ideally in no antenna self-interference, signal strength can pass through individual receiving antenna
It realizes and obtains in the ideal case.By comparing preset reference signal and receives signal and control output judging result signal；It is raw
At first control signal and the second empty control signal, until the reception signal is in the range of the preset reference signal.Its
In, the first control signal is used to control the coefficient of coup of the coupled signal；Second control signal is for controlling described support
Disappear the counteracting coefficient of signal, offsets coefficient and is also referred to as gain coefficient.Specifically, in step S610, believed according to the first control
The adjusting of coefficient of coup n in number control directional coupler；In step S620, reverse phase gain is controlled according to second control signal and is put
The gain coefficient of big device carries out reverse phase enhanced processing to coupled signal nTx.
Further, the control priority of the coefficient of coup is higher than the control priority of gain coefficient.Wherein, gain coefficient
Adjusting stepping is 0.5, and the adjusting stepping of the coefficient of coup is 0.1.Gain coefficient is controlled to adjust first, i.e., offseting signal is carried out thick
It adjusts, then controls to adjust the coefficient of coup, carry out fine tuning to offseting signal is generated, so recycle, optimize the intensity of offseting signal, directly
The signal strength of interference signal can be offset to the offseting signal of generation, namely until receiving signal in preset reference range of signal
Until interior.
By above-mentioned Full-duplex wireless communications method, the elimination to greatest extent to interference signal can be realized, improve pair
The eradicating efficacy of interference signal.
The embodiment of the invention also provides a kind of mobile terminal, mobile terminal include full duplex in an above-mentioned embodiment without
Line communication device.The mobile terminal of Full-duplex wireless communications device with any of the above-described embodiment, can be realized to interference
The elimination to greatest extent of signal, improves the eradicating efficacy to interference signal.As shown in fig. 7, for ease of description, illustrating only
Part related to the embodiment of the present invention, it is disclosed by specific technical details, it is logical to please refer to full duplex radio of the embodiment of the present invention
T unit part.The computer equipment can be include any terminal such as mobile phone, tablet computer, vehicle-mounted computer, wearable device
Equipment, by taking mobile terminal is mobile phone as an example：
Fig. 7 is the block diagram of the part-structure of mobile phone 700 relevant to mobile terminal provided in an embodiment of the present invention.With reference to figure
7, mobile phone 700 includes：Full-duplex wireless communications device 710, memory 720, input unit 730, display unit 740, sensor
750, voicefrequency circuit 760, Wireless Fidelity (wireless fidelity, WiFi) module 770, processor 780 and power supply 790
Equal components.It will be understood by those skilled in the art that handset structure shown in Fig. 7 does not constitute the restriction to mobile phone, may include
Than illustrating more or fewer components, certain components or different component layouts are perhaps combined.
Wherein, Full-duplex wireless communications device 710 can be used for receiving and sending messages or communication process in, the reception of signal and hair
It send, after the downlink information of base station being received, is handled to processor 780；The data of uplink can also be sent to base station.This
Outside, Full-duplex wireless communications device 710 can also be communicated with network and other equipment by wireless communication.Above-mentioned wireless communication can
To use any communication standard or agreement, including but not limited to global system for mobile communications (Global System of Mobile
Communication, GSM), general packet radio service (General Packet Radio Service, GPRS), code it is point more
Location (Code Division Multiple Access, CDMA), wideband code division multiple access (Wideband Code Division
Multiple Access, WCDMA), long term evolution (Long Term Evolution, LTE)), Email, short message service
(Short Messaging Service, SMS) etc..
Memory 720 can be used for storing software program and module, and processor 780 is stored in memory 720 by operation
Software program and module, thereby executing the various function application and data processing of mobile phone.Memory 720 can mainly include
Program storage area and data storage area, wherein program storage area can application journey needed for storage program area, at least one function
Sequence (such as application program, application program of image player function of sound-playing function etc.) etc.；Data storage area can store root
Created data (such as audio data, address list etc.) etc. are used according to mobile phone.In addition, memory 720 may include high speed
Random access memory, can also include nonvolatile memory, a for example, at least disk memory, flush memory device or
Other volatile solid-state parts.
Input unit 730 can be used for receiving the number or character information of input, and generate the user setting with mobile phone 700
And the related key signals input of function control.Specifically, input unit 730 may include touch panel 731 and other inputs
Equipment 732.Touch panel 731, alternatively referred to as touch screen collect touch operation (such as the user of user on it or nearby
Use the operation of any suitable object or attachment such as finger, stylus on touch panel 731 or near touch panel 731),
And corresponding attachment device is driven according to preset formula.In one embodiment, touch panel 731 may include touching inspection
Survey two parts of device and touch controller.Wherein, the touch orientation of touch detecting apparatus detection user, and detect touch operation
Bring signal, transmits a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and will
It is converted into contact coordinate, then gives processor 780, and can receive order that processor 780 is sent and be executed.In addition,
Touch panel 731 can be realized using multiple types such as resistance-type, condenser type, infrared ray and surface acoustic waves.In addition to touch surface
Plate 731, input unit 730 can also include other input equipments 732.Specifically, other input equipments 732 may include but not
It is limited to one of physical keyboard, function key (such as volume control button, switch key etc.) etc. or a variety of.
Display unit 740 can be used for showing information input by user or be supplied to user information and mobile phone it is various
Menu.Display unit 740 may include display panel 741.In one embodiment, liquid crystal display (Liquid can be used
Crystal Display, LCD), the forms such as Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED)
To configure display panel 741.In one embodiment, touch panel 731 can cover display panel 741, when touch panel 731 is examined
After measuring touch operation on it or nearby, processor 780 is sent to determine the type of touch event, is followed by subsequent processing device
780 provide corresponding visual output according to the type of touch event on display panel 741.Although in Fig. 7, touch panel
731 and display panel 741 are the input and input function for realizing mobile phone as two independent components, but in certain implementations
In example, can be integrated by touch panel 731 and display panel 741 and that realizes mobile phone output and input function.
Mobile phone 700 may also include at least one sensor 750, such as optical sensor, motion sensor and other sensings
Device.Specifically, optical sensor may include ambient light sensor and proximity sensor, wherein ambient light sensor can be according to environment
The light and shade of light adjusts the brightness of display panel 741, and proximity sensor can close display panel when mobile phone is moved in one's ear
741 and/or backlight.Motion sensor may include acceleration transducer, can detect by acceleration transducer and adds in all directions
The size of speed can detect that size and the direction of gravity when static, can be used to identify application (such as the horizontal/vertical screen of mobile phone posture
Switching), Vibration identification correlation function (such as pedometer, tap) etc.；In addition, mobile phone can also configure gyroscope, barometer, humidity
Other sensors such as meter, thermometer, infrared sensor etc..
Voicefrequency circuit 760, loudspeaker 761 and microphone 762 can provide the audio interface between user and mobile phone.Audio-frequency electric
Electric signal after the audio data received conversion can be transferred to loudspeaker 761, be converted to sound by loudspeaker 761 by road 760
Signal output；On the other hand, the voice signal of collection is converted to electric signal by microphone 762, is turned after being received by voicefrequency circuit 760
It is changed to audio data, then by after the processing of audio data output processor 780, another mobile phone can be sent to through RF circuit 710, or
Person exports audio data to memory 720 so as to subsequent processing.
WiFi belongs to short range wireless transmission technology, and mobile phone can help user's transceiver electronics postal by WiFi module 770
Part, browsing webpage and access streaming video etc., it provides wireless broadband internet access for user.Although Fig. 7 is shown
WiFi module 770, but it is understood that, and it is not belonging to must be configured into for mobile phone 700, it can according to need and omit.
Processor 780 is the control centre of mobile phone, using the various pieces of various interfaces and connection whole mobile phone, is led to
It crosses operation or executes the software program and/or module being stored in memory 720, and call and be stored in memory 720
Data execute the various functions and processing data of mobile phone, to carry out integral monitoring to mobile phone.In one embodiment, it handles
Device 780 may include one or more processing units.In one embodiment, processor 780 can integrate application processor and modulation
Demodulation processor, wherein the main processing operation system of application processor, user interface and application program etc.；Modulation /demodulation processing
Device mainly handles wireless communication.It is understood that above-mentioned modem processor can not also be integrated into processor 780.
Mobile phone 700 further includes the power supply 790 (such as battery) powered to all parts, it is preferred that power supply can pass through electricity
Management system and processor 780 are logically contiguous, to realize management charging, electric discharge and power consumption by power-supply management system
The functions such as management.
In one embodiment, mobile phone 700 can also include camera, bluetooth module etc..
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
Only several embodiments of the present invention are expressed for above embodiments, and the description thereof is more specific and detailed, but can not
Therefore it is construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art,
Under the premise of not departing from present inventive concept, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.
Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (11)
1. a kind of Full-duplex wireless communications device, which is characterized in that including：Transmitting module, cancellation module, receiving module and double anti-
Present control module；
The transmitting module is used under double feedback control modules controls, using partial transmitting signal as coupled signal coupling
It is bonded to the cancellation module, and exports the transmitting signal；
The cancellation module, under the double feedback control modules control, generation be modulated to the coupled signal support
Disappear and signal and exports to the receiving module；
The receiving module is used to obtain the radiofrequency signal comprising interference signal of Base Transmitter, and to the radiofrequency signal, support
The signal that disappears is overlapped to eliminate the interference signal and generate reception signal, and the reception signal is exported respectively to described double
Feedback control module, receiving end；
Double feedback control modules are used to be generated according to the reception signal and preset reference signal for described in feedback control
The first control signal of transmitting module and second control signal for cancellation module described in feedback control；The first control letter
Number for controlling the coefficient of coup of the coupled signal, the second control signal is used to control the counteracting system of the offseting signal
Number；
The cancellation module is inverting gain amplifier, and the inverting gain amplifier is according to the second control signal to described
Coupled signal carries out reverse phase enhanced processing and generates the offseting signal.
2. Full-duplex wireless communications device according to claim 1, which is characterized in that the transmitting module includes transmitting day
Line and directional coupler；
The directional coupler is used to couple the counteracting mould for the part transmitting signal according to the first control signal
Block；The transmitting signal is exported after the directional coupler by the transmitting antenna.
3. Full-duplex wireless communications device according to claim 1, which is characterized in that the receiving module includes receiving day
Line, superpositing unit and function sub-unit；
The receiving antenna is used to obtain the radiofrequency signal including interference signal of Base Transmitter；
The superpositing unit generates reception for the interference signal to be overlapped and eliminated to the radiofrequency signal, offseting signal
Signal；
The function sub-unit is used to for the reception signal being delivered to double feedback control modules respectively, receives signal reception
End.
4. Full-duplex wireless communications device according to claim 3, which is characterized in that the superpositing unit be adder or
Combiner.
5. Full-duplex wireless communications device according to claim 3, which is characterized in that the function sub-unit be power splitter or
Balun.
6. Full-duplex wireless communications device according to claim 1, which is characterized in that double feedback control modules include
Micro-control unit, comparator and storage unit；
The storage unit is for storing the preset reference signal；
The comparator is for the preset reference signal and the reception signal and exports judging result signal；
The micro-control unit generates the first control signal and second control signal according to the judging result signal.
7. Full-duplex wireless communications device according to claim 6, which is characterized in that double feedback control modules are also wrapped
D/A conversion unit is included, the D/A conversion unit is used to the analog signal that the storage unit stores being converted to the comparison
The digital signal that device can identify.
8. a kind of Full-duplex wireless communications method, which is characterized in that including：
Control transmitting module carries out coupling to partial transmitting signal and generates coupled signal, and exports the transmitting signal；
The coupled signal is modulated and generates offseting signal；
The interference signal in radiofrequency signal is obtained, and the radiofrequency signal, offseting signal are overlapped, eliminates the interference letter
Number generate receive signal；
First control signal and second control signal are generated according to the reception signal and preset reference signal, until the reception
Signal is in the range of the preset reference signal；Wherein, the first control signal is used to control the coupling of the coupled signal
Collaboration number, the second control signal are used to control the counteracting coefficient of the offseting signal；Wherein, believed according to first control
Number control the coefficient of coup adjusting；The gain coefficient that inverting gain amplifier is controlled according to the second control signal, to coupling
Signal carries out reverse phase enhanced processing and generates the offseting signal.
9. Full-duplex wireless communications method according to claim 8, which is characterized in that it is described according to the reception signal and
Preset reference signal generates first control signal and second control signal, including：
The preset reference signal is obtained, and the preset reference signal is stored；
Compare the preset reference signal and the reception signal and exports judging result signal；
First control signal and the second empty control signal are generated according to the judging result signal.
10. Full-duplex wireless communications method according to claim 8, which is characterized in that the control of the coefficient of coup is excellent
First grade is higher than the control priority for offsetting coefficient.
11. a kind of mobile terminal, which is characterized in that the mobile terminal includes the described in any item full duplexs of claim 1~7
Wireless communication device.
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| CN109861702A (en) * | 2017-11-30 | 2019-06-07 | 北京小米移动软件有限公司 | Interfering signal removing method and device |
| WO2020220927A1 (en) * | 2019-04-30 | 2020-11-05 | 华为技术有限公司 | Full-duplex communication device and method |
| CN110928177B (en) * | 2019-11-14 | 2021-12-10 | 上海咏昕信息科技有限公司 | Clock synchronization system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580720A (en) * | 2013-11-20 | 2014-02-12 | 东南大学 | Same-frequency full-duplex self-interference offset device |
| CN103916148A (en) * | 2013-01-05 | 2014-07-09 | 华为技术有限公司 | Self-adaption radio frequency interference offsetting device, method and receiver |
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| WO2015196398A1 (en) * | 2014-06-26 | 2015-12-30 | 华为技术有限公司 | Wireless communication method and system, and full-duplex wireless transceiver |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103916148A (en) * | 2013-01-05 | 2014-07-09 | 华为技术有限公司 | Self-adaption radio frequency interference offsetting device, method and receiver |
| CN103580720A (en) * | 2013-11-20 | 2014-02-12 | 东南大学 | Same-frequency full-duplex self-interference offset device |
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