CN106972871A - 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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- CN106972871A CN106972871A CN201710204153.1A CN201710204153A CN106972871A CN 106972871 A CN106972871 A CN 106972871A CN 201710204153 A CN201710204153 A CN 201710204153A CN 106972871 A CN106972871 A CN 106972871A
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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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Abstract
The present invention relates to a kind of Full-duplex wireless communications device, method and mobile terminal.Full-duplex wireless communications device includes：Transmitter module, cancellation module, receiving module and double feedback control modules.Transmitter 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 for including interference signal of Base Transmitter, and radiofrequency signal, offseting signal are overlapped to eliminate interference signal generation reception signal；Double feedback control modules are according to reception signal and the control signal of preset reference signal generation first and the second control signal, and constantly according to the first control signal feedback control transmitter module, according to the 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, the eradicating efficacy to interference signal is improved.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to Full-duplex wireless communications device, method and movement eventually
End.
Background technology
Currently practical wireless communication system is typically using 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, during isolation uplink and downlink link, sacrifice time resource and frequency spectrum respectively
Resource, causes the significant wastage of the resource of frequency spectrum.
, can be using co-channel full duplex (Co-frequency Co-time simultaneously with the development of the communication technology
Duplex, CCFD) technology carries out two-way communication, that is, communication terminal can be realized using identical frequency while transmitting-receiving nothing
Line signal, this is just greatly saved frequency spectrum resource, while existing traffic rate can also be lifted.But co-channel full duplex simultaneously
The problem of mode all has self-interference in theoretical and engineering, i.e., the local signal outwards launched can be sent to distant transmitter
Signal have overlapping on frequency spectrum, can to signal to be received formation self-interference.
The content of the invention
The embodiment of the present invention provides a kind of Full-duplex wireless communications device, method and mobile terminal, it is possible to achieve self-interference
The maximum elimination of signal, improves the eradicating efficacy of interference signal.
A kind of Full-duplex wireless communications device, including：Transmitter module, cancellation module, receiving module and double feedback control moulds
Block；
The transmitter module, for believing under described pair of feedback control module control, using partial transmitting signal as coupling
Number the cancellation module is coupled to, and exports the transmission signal；
The cancellation module, under the control of the described pair of feedback control module, be modulated life to the coupled signal
Into offseting signal and export to the receiving module；
The receiving module is used for the radiofrequency signal for including interference signal for obtaining Base Transmitter, and the radio frequency is believed
Number, offseting signal be overlapped and receive signal to eliminate interference signal generation, and by the reception signal export respectively to
Described pair of feedback control module, receiving terminal；
Described pair of feedback control module is used to be used for feedback control according to the reception signal and preset reference signal generation
First control signal of the transmitter module and the second control signal for cancellation module described in feedback control.
A kind of Full-duplex wireless communications method, it is characterised in that including：
Control transmitter module to carry out coupling generation coupled signal to partial transmitting signal, and export the transmission signal；
The coupled signal is modulated and offseting signal is generated；
The interference signal in radiofrequency signal is obtained, and the radiofrequency signal, offseting signal are overlapped, eliminates described dry
Disturb signal generation and receive signal；
According to the reception signal and the control signal of preset reference signal generation first and the second empty control signal, Zhi Daosuo
Reception signal is stated in the range of the preset reference signal；Wherein, first control signal is used to control the coupling letter
Number the coefficient of coup, second control signal is used to control the counteracting coefficient of the offseting signal.
A kind of mobile terminal, the mobile terminal includes 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
Into the first control signal and the second control signal.Double feedback control modules are constantly sent out according to the first control signal feedback control
Penetrate module and according to the second control signal feedback control cancellation module, then constantly control the intensity of offseting signal, finally
The elimination to greatest extent to interference signal is realized in receiving module, the eradicating efficacy to interference signal is improved.
Brief description of the drawings
Fig. 1 is the structural framing figure of Full-duplex wireless communications device in one embodiment；
Fig. 2 is the structural framing figure of transmitter 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 mobile phone of mobile terminal correlation in one embodiment.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
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
It is easy to explanation, illustrate only the part related to the embodiment of the present invention.
The Full-duplex wireless communications device can be applied in point-to-point wireless communication system, such as the system 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 transmitter module 10, cancellation module 20, receiving module 30
With double feedback control modules 40.Wherein, transmitter module 10 can be under the control of double feedback control modules 40, by partial transmitting signal
Cancellation module 20 is coupled to as coupled signal, and exports transmission signal.Cancellation module 20 can be in double feedback control modules 40
Generation offseting signal is modulated under control, to coupled signal and is exported to receiving module 30.The receiving module 30 obtains base
Stand transmitting the radiofrequency signal for include interference signal, and the radiofrequency signal, offseting signal are overlapped and eliminate it is described do
Disturb signal generation and receive signal, and the reception signal is exported to described pair of feedback control module 40, receiving terminal respectively.It is double anti-
Presenting control module 40 is used for according to the first control for receiving signal and preset reference signal generation for feedback control transmitter module 10
Signal processed and the 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 the second control signal enough generated.Double feedback control modules 40 are constantly fed back according to the first control signal
Control transmitter module 10 and according to the second control signal feedback control cancellation module 20, then constantly control offseting signal
Intensity, then realizes the elimination to greatest extent to interference signal in receiving module 30, improves the elimination effect to interference signal
Really.
In one embodiment, with reference to Fig. 2, transmitter module 10 includes transmitting antenna 110 and directional coupler 120.Orientation
The partial transmitting signal Tx that coupler 120 can export transmitter module 10 carries out coupling generation coupled signal nTx, and (n is coupling
Coefficient), and coupled signal is coupled to cancellation module 20.Wherein, the first control signal is used for the coupling for controlling the coupled signal
Syzygy number, that is, the coefficient of coup n in directional coupler 120 can be adjusted according to the first control signal, and then is controlled
The intensity size of coupled signal.After the oriented coupler 120 of transmission signal that transmitter module 10 exports output end is handled, by sending out
Penetrate the output of the heavenwards of antenna 110.
Specifically, directional coupler 120 can use strip line directional coupler 120, it would however also be possible to employ microstrip line is oriented
Coupler 120.Transmitting antenna 110 can be poliarizing antenna, can also use circulator with the reception antenna in receiving module 30
Realize the common antenna of multiplexing.
In one embodiment, transmitter module 10 also includes the first low pass filter 130, first low pass filter
130 output end is connected with the output end of directional coupler 120, can be filtered place to the transmission signal that output end is exported
Reason.
In one embodiment, cancellation module 20 is inverting gain amplifier.Inverting gain amplifier is according to the second control
Signal carries out anti-phase enhanced processing generation offseting signal-nmTx to coupled signal nTx, and (- m is the gain system of inverting gain amplifier
Number).Wherein, the second control signal is used for the counteracting coefficient for controlling the offseting signal, wherein, it is that anti-phase gain is put to offset coefficient
The gain coefficient of big device, that is, the gain coefficient (- m) of inverting gain amplifier can be adjusted for the second control signal.
In one embodiment, cancellation module 20 can also be to include the mould of two discrete devices of phase inverter and amplifier
Block.Wherein, after the anti-phase processing of the inverted device of coupled signal, then generation offseting signal is amplified by amplifier.
In one embodiment, with reference to Fig. 3, receiving module 30 includes reception antenna 210, the superpositing unit being sequentially connected electrically
220 and work(subdivision 230.Reception antenna 210 can be obtained in radiofrequency signal Rx and radiofrequency signal Rx from base station to hair
Penetrate the interference signal qTx that signal Tx produces interference.Specifically, reception antenna 210 can be poliarizing antenna, or with transmitting
Transmitting antenna 110 in module 10 realizes the common antenna of multiplexing using circulator.If reception antenna 210, transmitting antenna 110 are equal
Using poliarizing antenna, reception antenna 210 can be in the form of orthogonal thereto polarization with transmitting antenna 110.
The radiofrequency signal Rx and cancellation module comprising interference signal qTx that superpositing unit 220 is obtained to reception antenna 210
Offseting signal-the nmTx of 20 generations is overlapped processing, realizes the elimination to interference signal, and generate reception signal.
Specifically, superpositing unit 220 can be adder.Adder is the device for producing number sum.Wherein, adder
First input end is connected with reception antenna 210, and the second input of adder is connected with cancellation module 20, the output end of adder
It is connected with work(subdivision 230.Radiofrequency signal Rx, interference signal qTx and counteracting that adder can be obtained to reception antenna 210
Offseting signal-the nmTx that module 20 is generated is overlapped processing, realizes the elimination to interference signal qTx, and generate reception signal
Export to work(subdivision 230.
Accordingly, superpositing unit 220 can be combiner, and combiner can be also believed the radio frequency that reception antenna 210 is obtained
Offseting signal-the nmTx that number Rx, interference signal qTx and cancellation module 20 are generated is overlapped processing, and realization is to interference signal
QTx elimination, and reception signal output is generated to work(subdivision 230.
The reception signal of reception is delivered to double feedback control modules 40, receives signal receiving end by work(subdivision 230 respectively.
Specifically, work(subdivision 230 can be the output of power splitter, the wherein input of power splitter and superpositing unit 220
Unit is connected, and the first output end of power splitter is connected with double feedback control modules 40, and the second output end of power splitter is believed with receiving
The connection of number input.Power splitter can will receive signal and be delivered to double feedback control modules 40 respectively, receive signal receiving end.Connect
It can also be balun to receive unit, accordingly, and balun can will also receive signal and be delivered to double feedback control modules 40 respectively, receive
Signal receiving end.
In one embodiment, receiving module 30 also include the second low pass filter 240, second LPF it is defeated
Enter end to be connected with the output end of the work(subdivision 230, be filtered after processing and exported to reception signal for the docking collection of letters number
Receiving terminal.
In one embodiment, with reference to Fig. 4, double feedback control modules 40 include being micro-control unit 410, comparator 420
With memory cell 430.Wherein, the first input end of comparator 420 is connected with receiving module 30, the second input of comparator 420
End is connected with memory cell 430, and the output end of comparator 420 is connected with the input of micro-control unit 410, micro-control unit
410 output end is connected with receiving module 30, cancellation module 20 respectively.
The preset reference signal obtained in advance is stored in memory cell 430, preset reference signal in the ideal case,
There is no the received signal strength of self-interference.The preset reference signal and reception signal of 420 pairs of receptions of comparator are compared processing,
And export corresponding judging result signal.Micro-control unit 410 generates the first control of control transmitter module 10 with judging result signal
Second control signal of signal processed and control cancellation module 20.
Wherein, the priority of the first control signal is higher than the priority of the second control signal, and micro-control unit 410 is controlled first
The gain coefficient of inverting gain amplifier processed, wherein, the regulation stepping of gain coefficient is 0.5, and the coupling of coupler is then controlled again
Syzygy number, the regulation stepping of the coefficient of coup is 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 carefully
Adjust, the intensity of the control offseting signal so circulated.
In one embodiment, double feedback control modules 40 also include D/A conversion unit 440, D/A conversion unit 440
The analog signal that memory cell 430 is stored is converted to the data signal that comparator 420 can be recognized, 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
120th, inverting gain amplifier 30, micro-control unit 410, comparator 420, memory cell 430, adder 220, power splitter 230
With reception antenna 210.Wherein, the input of directional coupler 120 is connected with output end, the first output end of directional coupler with
Transmitting antenna 110 is connected, and the second output end of directional coupler 120 is connected with the input of inverting gain amplifier 30.It is anti-phase
The output end of gain amplifier 30 is connected with the first output end of adder 220, reception antenna 210 and the second of adder 220
Output end is connected, and the output end of adder 220 is connected with the input of power splitter 230.First output end of power splitter 230 with than
First input end compared with device 420 is connected, and the second output end of power splitter 230 is connected with receiving signal receiving end.Comparator 420
Second input is connected with memory cell 430, and the output end of comparator 420 is connected with micro-control unit 410, micro-control unit
410 the first output end is connected with the control end of directional coupler 120, and the second output end of micro-control unit 410 increases with anti-phase
The control end connection of beneficial amplifier 30.
Wherein, directional coupler 120 is under the first control signal that micro-control unit 410 is exported, by partial transmitting signal
Be coupled to as coupled signal in inverting gain amplifier 30, inverting gain amplifier 30 exported in micro-control unit 410 the
Anti-phase enhanced processing is carried out in the presence of two control signals, 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 reception antenna 210 is obtained are generated
Number-nmTx is overlapped processing, realizes the elimination to interference signal qTx, and generates reception signal output to power splitter 230, and
The reception signal of reception is exported to comparator 420, receiving terminal respectively by power splitter 230.Comparator 420 is to memory cell 430
In preset reference signal and receive signal and be compared processing, and export corresponding judging result signal.Micro-control unit 410 with
Judging result signal generates the first control signal for controlling the coefficient of coup of directional coupler 120 and put for controlling anti-phase gain
Second control signal of the big gain coefficient of device 30 (counteracting coefficient).
Wherein, the priority of the first control signal is higher than the priority of the second control signal, and micro-control unit 410 is controlled first
The gain coefficient of inverting gain amplifier 30 processed, wherein, the regulation stepping of gain coefficient is 0.5, and coupler is then controlled again
The coefficient of coup, the regulation stepping of the coefficient of coup is 0.1.It is also understood that micro-control unit 410 amplifies to anti-phase gain first
Device 30 carries out the control of coarse adjustment, generates offseting signal, and the control of fine tuning is then carried out to coupler, the offseting signal of generation is entered
Row fine tuning, so circulation, optimize the intensity of offseting signal, until the signal that the offseting signal of generation can offset interference signal is strong
Degree, make adder 220 export reception signal in preset reference range of signal untill.
The reception signal that above-mentioned Full-duplex wireless communications device is generated according to adder 220 by micro-control unit 410 is not
The coefficient of coup of disconnected feedback regulation directional coupler 120 and the gain coefficient of inverting gain amplifier 30, realize and interference are believed
Number elimination to greatest extent, improve the eradicating efficacy to interference signal.
In addition, the flow chart for Full-duplex wireless communications method in one embodiment shown in Fig. 6.The embodiment of the present invention is also
A kind of Full-duplex wireless communications method is provided, including：
Step S610：Control transmitter module to carry out coupling generation coupled signal to partial transmitting signal, and export transmitting letter
Number.
Transmitter module includes transmitting antenna and directional coupler.Transmitting antenna can be poliarizing antenna, can also be with reception
Reception antenna in module realizes the common antenna of multiplexing using circulator.Send out the part that control coupler exports transmitter module
Penetrate signal Tx and carry out coupling generation coupled signal nTx (n is the coefficient of coup), wherein it is possible to control the coupling in directional coupler
Coefficient n regulation, and then control the intensity size of coupled signal.The transmission signal that control transmitter module exports output end is through fixed
After being handled to coupler, exported by transmitting antenna heavenwards.
Step S620：Coupled signal is modulated and offseting signal is generated.
Control inverting gain amplifier to carry out anti-phase enhanced processing to coupled signal nTx and generate offseting signal-nmTx, its
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,
Eliminate the interference signal generation and receive signal.
Reception antenna 210 is obtained to produce transmission signal Tx in radiofrequency signal Rx and radiofrequency signal Rx from base station and done
The interference signal qTx disturbed.Specifically, reception antenna can be poliarizing antenna, or with the transmitting antenna in transmitter module
The common antenna of multiplexing is realized using circulator.If reception antenna, transmitting antenna use poliarizing antenna, reception antenna and transmitting
Antenna can be in the form of orthogonal thereto polarization.
The radiofrequency signal Rx comprising interference signal qTx and the offseting signal-nmTx of generation obtained to reception antenna enters
Row overlap-add procedure, realizes the elimination to interference signal, and generate reception signal.
Step S640：According to the reception signal and the control signal of preset reference signal generation first and the second empty control letter
Number, until the reception signal is in the range of the preset reference signal；Wherein, first control signal is used to control institute
The coefficient of coup of coupled signal is stated, second control signal is used for the counteracting coefficient for controlling the offseting signal.
Preset reference signal is obtained, and preset reference signal is stored, wherein, preset reference signal is in preferable feelings
Under condition, the reception signal without self-interference, preset reference signal includes the strength information of signal.Preset reference signal is being obtained,
It is the signal in the acquisition ideally in no antenna self-interference, its signal intensity can pass through single reception antenna
Realize and obtain in the ideal case.By comparing preset reference signal and reception signal and controlling to export judging result signal；It is raw
Into the first control signal and the second empty control signal, until the reception signal is in the range of the preset reference signal.Its
In, first control signal is used for the coefficient of coup for controlling the coupled signal；Second control signal is used to control 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 regulation of coefficient of coup n in number control directional coupler；In step S620, anti-phase gain is controlled to put according to the second control signal
The gain coefficient of big device, anti-phase enhanced processing is carried out 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
It is 0.5 to adjust stepping, and the regulation stepping of the coefficient of coup is 0.1.Gain coefficient is controlled to adjust first, i.e., offseting signal is carried out thick
Adjust, then control to adjust the coefficient of coup, fine tuning is carried out to generation offseting signal, so circulation optimizes the intensity of offseting signal, directly
Offseting signal to generation can offset the signal intensity of interference signal, namely until receiving signal in preset reference range of signal
Untill interior.
By above-mentioned Full-duplex wireless communications method, the elimination to greatest extent to interference signal can be realized, is improved pair
The eradicating efficacy of interference signal.
The embodiment of the present invention additionally provides a kind of mobile terminal, mobile terminal include full duplex in an above-mentioned embodiment without
Line communicator.The mobile terminal of Full-duplex wireless communications device with any of the above-described embodiment, it 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 convenience of description, illustrate only
The part related to the embodiment of the present invention, particular technique details is not disclosed, be refer to full duplex radio of the embodiment of the present invention and is led to
T unit part.The computer equipment can be to include any terminal such as mobile phone, tablet personal computer, vehicle-mounted computer, Wearable
Equipment, so that mobile terminal is mobile phone as an example：
Fig. 7 is the block diagram of the part-structure of the mobile phone 700 related 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 block 730, display unit 740, sensor
750th, voicefrequency circuit 760, Wireless Fidelity (wireless fidelity, WiFi) module 770, processor 780 and power supply 790
Deng part.It will be understood by those skilled in the art that the handset structure shown in Fig. 7 does not constitute the restriction to mobile phone, it can include
Than illustrating more or less parts, some parts or different parts arrangement are either combined.
Wherein, Full-duplex wireless communications device 710 can be used for receive and send messages or communication process in, the reception of signal and hair
Send, after can the downlink information of base station be received, handled to processor 780；Up data can also be sent to base station.This
Outside, Full-duplex wireless communications device 710 can also be communicated by radio communication with network and other equipment.Above-mentioned radio 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 division it is many
Location (Code Division Multiple Access, CDMA), WCDMA (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 storage software program and module, and processor 780 is stored in memory 720 by operation
Software program and module, so as to perform various function application and the data processing of mobile phone.Memory 720 can mainly include
Program storage area and data storage area, wherein, the application journey that program storage area can be needed for storage program area, at least one function
Sequence (application program of such as sound-playing function, application program of image player function etc.) etc.；Data storage area can store root
Created data (such as voice data, address list etc.) etc. are used according to mobile phone.In addition, memory 720 can be included at a high speed
Random access memory, can also include nonvolatile memory, for example, at least one disk memory, flush memory device or
Other volatile solid-state parts.
Input block 730 can be used for the numeral or character information for receiving input, and generation and the user of mobile phone 700 to set
And the relevant key signals input of function control.Specifically, input block 730 may include contact panel 731 and other inputs
Equipment 732.Contact panel 731, alternatively referred to as touch-screen, collect touch operation (such as user of the user on or near it
Use the operation of any suitable object such as finger, stylus or annex on contact panel 731 or near contact panel 731),
And corresponding attachment means are driven according to formula set in advance.In one embodiment, contact panel 731 may include to touch inspection
Survey two parts of device and touch controller.Wherein, touch detecting apparatus detects the touch orientation of user, and detects touch operation
The signal brought, 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 the order sent of reception processing device 780 and can be performed.In addition,
Contact panel 731 can be realized using polytypes such as resistance-type, condenser type, infrared ray and surface acoustic waves.Except touch surface
Plate 731, input block 730 can also include other input equipments 732.Specifically, other input equipments 732 can be included but not
It is limited to the one or more in physical keyboard, function key (such as volume control button, switch key etc.) etc..
Display unit 740 can be used for the various of the information that is inputted by user of display or the information for being supplied to user and mobile phone
Menu.Display unit 740 may include display panel 741.In one embodiment, liquid crystal display (Liquid can be used
Crystal Display, LCD), the form such as Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED)
To configure display panel 741.In one embodiment, contact panel 731 can cover display panel 741, when contact panel 731 is examined
Measure after the touch operation on or near it, processor 780 is sent to determine the type of touch event, with preprocessor
780 provide corresponding visual output according to the type of touch event on display panel 741.Although in the figure 7, contact panel
731 and display panel 741 are input and the input function that mobile phone is realized as two independent parts, but are implemented some
, can be by contact panel 731 and the input that is integrated and realizing mobile phone of display panel 741 and output function in example.
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 transducer, wherein, ambient light sensor can be according to environment
The light and shade of light adjusts the brightness of display panel 741, and proximity transducer 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 and adds in all directions by acceleration transducer
The size of speed, can detect that size and the direction of gravity when static, application (the such as horizontal/vertical screen available for identification 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 ray sensor etc..
Voicefrequency circuit 760, loudspeaker 761 and microphone 762 can provide the COBBAIF between user and mobile phone.Audio-frequency electric
Electric signal after the voice data received conversion can be transferred to loudspeaker 761, sound is converted to 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, by voicefrequency circuit 760 receive after turn
It is changed to voice data, then after voice data output processor 780 is handled, another mobile phone can be sent to through RF circuits 710, or
Person exports voice data to memory 720 so as to subsequent treatment.
WiFi belongs to short range wireless transmission technology, and mobile phone can help user's transceiver electronicses postal by WiFi module 770
Part, browse webpage and access streaming video etc., it has provided the user wireless broadband internet and accessed.Although Fig. 7 is shown
WiFi module 770, but it is understood that, it is simultaneously not belonging to must be configured into for mobile phone 700, can omit as needed.
Processor 780 is the control centre of mobile phone, using various interfaces and the various pieces of connection whole mobile phone, is led to
Cross operation or perform and be stored in software program and/or module in memory 720, and call and be stored in memory 720
Data, perform the various functions and processing data of mobile phone, so as to carry out integral monitoring to mobile phone.In one embodiment, handle
Device 780 may include one or more processing units.In one embodiment, processor 780 can integrated application processor and modulation
Demodulation processor, wherein, application processor mainly handles operating system, user interface and application program etc.；Modulation /demodulation is handled
Device mainly handles radio communication.It is understood that above-mentioned modem processor can not also be integrated into processor 780.
Mobile phone 700 also 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, so as 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 example can be combined arbitrarily, to make description succinct, 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, is all considered to be the scope of this specification record.
Above example only expresses the several embodiments of the present invention, and it describes 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 the person of ordinary skill of the art,
On the premise of not departing from present inventive concept, various modifications and improvements can be made, these belong to protection scope of the present invention.
Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (13)
1. a kind of Full-duplex wireless communications device, it is characterised in that including：Transmitter module, cancellation module, receiving module and double anti-
Present control module；
The transmitter module, for being used as coupled signal coupling under described pair of feedback control module control, using partial transmitting signal
The cancellation module is bonded to, and exports the transmission signal；
The cancellation module, under the control of the described pair of feedback control module, generation be modulated to the coupled signal supported
Disappear and signal and export to the receiving module；
The receiving module is used to obtaining the radiofrequency signal for including interference signal of Base Transmitter, and to the radiofrequency signal, support
The signal that disappears is overlapped receives signal to eliminate the interference signal generation, and the reception signal is exported to described double respectively
Feedback control module, receiving terminal；
Described pair of feedback control module is used for according to the reception signal and preset reference signal generation are used for feedback control
First control signal of transmitter module and the second control signal for cancellation module described in feedback control.
2. Full-duplex wireless communications device according to claim 1, it is characterised in that the transmitter module includes transmitting day
Line and directional coupler；
The directional coupler is used to the part transmission signal is coupled into the counteracting mould according to first control signal
Block；The transmission signal is exported after the directional coupler by the transmitting antenna.
3. Full-duplex wireless communications device according to claim 1, it is characterised in that the cancellation module is anti-phase gain
Amplifier, the inverting gain amplifier carries out anti-phase enhanced processing life according to second control signal to the coupled signal
Into the offseting signal.
4. Full-duplex wireless communications device according to claim 1, it is characterised in that the receiving module includes receiving day
Line, superpositing unit and work(subdivision；
What the reception antenna was used to obtaining Base Transmitter includes the radiofrequency signal of interference signal；
The superpositing unit is used to being overlapped the radiofrequency signal, offseting signal and eliminating the interference signal generation reception
Signal；
The work(subdivision is used to the reception signal being delivered to described pair of feedback control module respectively, receives signal reception
End.
5. Full-duplex wireless communications device according to claim 4, it is characterised in that the superpositing unit be adder or
Combiner.
6. Full-duplex wireless communications device according to claim 4, it is characterised in that the work(subdivision be power splitter or
Balun.
7. Full-duplex wireless communications device according to claim 1, it is characterised in that described pair of feedback control module includes
Micro-control unit, comparator and memory cell；
The memory cell is used to store the preset reference signal；
The comparator is used to compare the preset reference signal and the reception signal and export judging result signal；
The micro-control unit generates first control signal and the second control signal according to the judging result signal.
8. Full-duplex wireless communications device according to claim 7, it is characterised in that described pair of feedback control module is also wrapped
D/A conversion unit is included, the analog signal that the D/A conversion unit is used to store the memory cell is converted to the comparison
The data signal that device can be recognized.
9. a kind of Full-duplex wireless communications method, it is characterised in that including：
Control transmitter module to carry out coupling generation coupled signal to partial transmitting signal, and export the transmission signal；
The coupled signal is modulated and offseting signal is generated；
The interference signal in radiofrequency signal is obtained, and the radiofrequency signal, offseting signal are overlapped, the interference letter is eliminated
Number generation receive signal；
According to the reception signal and the control signal of preset reference signal generation first and the second empty control signal, connect until described
The collection of letters number is in the range of the preset reference signal；Wherein, first control signal is used to control the coupled signal
The coefficient of coup, second control signal is used for the counteracting coefficient for controlling the offseting signal.
10. Full-duplex wireless communications method according to claim 9, it is characterised in that described to enter to the coupled signal
Row is modulated and generates offseting signal, including：
Anti-phase enhanced processing is carried out to the coupled signal and generates the offseting signal.
11. Full-duplex wireless communications method according to claim 9, it is characterised in that described according to the reception signal
With the control signal of preset reference signal generation first and the second empty 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 export judging result signal；
First control signal and the second empty control signal are generated according to the judging result signal.
12. Full-duplex wireless communications method according to claim 9, it is characterised in that the control of the coefficient of coup is excellent
Control priority of the first level higher than the counteracting coefficient.
13. a kind of mobile terminal, it is characterised in that the mobile terminal includes the full duplex described in any one of claim 1~8
Radio 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 |
| CN110928177A (en) * | 2019-11-14 | 2020-03-27 | 上海咏昕信息科技有限公司 | Clock synchronization system and method |
| WO2020220927A1 (en) * | 2019-04-30 | 2020-11-05 | 华为技术有限公司 | Full-duplex communication device and method |
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| 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 |
| 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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| 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 |
| 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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| 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 |
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| Publication number | Publication date |
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| CN106972871B (en) | 2018-11-27 |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., Ltd. |