CN105025160B - A kind of millimeter wave frequency band D2D mobile phones and its communication means - Google Patents
A kind of millimeter wave frequency band D2D mobile phones and its communication means Download PDFInfo
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- CN105025160B CN105025160B CN201510311142.4A CN201510311142A CN105025160B CN 105025160 B CN105025160 B CN 105025160B CN 201510311142 A CN201510311142 A CN 201510311142A CN 105025160 B CN105025160 B CN 105025160B
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Abstract
The invention discloses a kind of millimeter wave frequency band D2D mobile phones and its communication means, millimeter wave frequency band D2D mobile phones include RF transceivers, central processing unit, cellular module, D2D modules and switch module；Switch module connects cellular module, D2D modules and RF transceivers；Cellular module or D2D modules are connect by the control signal behavior that switch module is exported according to central processing unit with RF transceivers, and cellular communication is carried out when cellular module is connect with RF transceivers；When D2D modules are connect with RF transceivers, the D2D that the frequency of sending and receiving signal carries out Frequency mixing processing and carries out millimeter wave frequency band is communicated；Realize that timesharing switching to carry out the model selection of cellular communication and D2D communications, avoids both of which from influencing each other by the selection of switch module；Millimeter wave and 4G/3G frequency ranges can be made to be compatible with the Frequency mixing processing of sending and receiving signal frequency, improve compatibility.
Description
Technical field
The present invention relates to mobile communication technology field more particularly to a kind of millimeter wave frequency band D2D mobile phones and its communications
Method.
Background technology
It is higher and higher to data transmission rates demands since wireless communication spectrum resource is more and more nervous, the demand of frequency spectrum
More and more wider, existing frequency spectrum resource anxiety causes it to cannot be satisfied the communication requirement being growing.
Millimeter involves D2D（Device to Device, device-to-device communication）Technology is all 5G epoch crucial candidate skill
Art.The features such as millimeter wave frequency band is wide based on its available spectral range, the easy antenna for realizing narrow beam and high-gain, increasingly
It attracts attention and becomes one of technology most potential in future wireless system technology.D2D technologies are to solve interface-free resources, reduce
The effective scheme of the problems such as cell phone network flow, alleviation network congestion, emergency communication and social networking application.Make neighbour using D2D technologies
Communication between nearly user is switched to D2D patterns from cellular communication, can save interface-free resources, reduce core network pressure；
In the simultaneous scene of mass users terminal, terminal is linked into the particular terminal of accessed network in the form of D2D, alleviates flood tide
Terminal accesses the congestion brought；When there is blind area or is damaged because of disaster network in the network coverage, user equipment by D2D be located at
User equipment in covering establishes connection, to establish the connection with network in the form of D2D relayings；User can be with by D2D
It finds the user interested of adjacent domain and carries out data transmission, content share etc..As the crucial candidate technologies towards 5G,
D2D has the potential foreground for improving system performance, promoting user experience, extending cellular communications applications, thus by industry
Extensive concern.
But the increase of new traffic business causes frequency spectrum resource gradually nervous.It is difficult to look in existing 6GHZ or less frequency ranges
It is communicated to suitable idle frequency range for D2D.Millimeter wave frequency band frequency resource is abundant, and idle frequency range is more, and therefore, the present invention will
Millimeter wave frequency band is combined with D2D technologies, provides a kind of millimeter wave frequency band D2D mobile phones and its communication means.
Invention content
The technical problem to be solved in the present invention is, for the drawbacks described above of the prior art, provides a kind of millimeter wave frequency band
D2D mobile phones and its communication means, it is intended to solve the problems, such as that existing frequency spectrum resource anxiety cannot be satisfied the communication requirement being growing.
The technical proposal for solving the technical problem of the invention is as follows：
A kind of millimeter wave frequency band D2D mobile phones, including RF transceivers and central processing unit further include cellular module, D2D moulds
Block and switch module；
The control signal behavior that the switch module is exported according to central processing unit is by cellular module or D2D modules and RF
Transceiver connects, and cellular communication is carried out when cellular module is connect with RF transceivers；It is right when D2D modules are connect with RF transceivers
The frequency of sending and receiving signal carries out Frequency mixing processing and carries out the D2D communications of millimeter wave frequency band.
In the millimeter wave frequency band D2D mobile phones, the cellular module includes cellular transmitter, cellular transceiver, honeycomb
Duplexer and cellular band antenna；
The cellular transmitter carries out power amplification to the transmitting signal that RF transceivers export and is filtered, honeycomb duplex
Device is emitted after isolating transmitting signal by cellular band antenna；
The cellular band antenna, which receives, to be received signal and is transferred to cellular transceiver, and honeycomb duplexer presses frequency separation
Go out and receive signal, cellular transceiver to the reception signal be filtered and low noise amplification processing after be transferred to RF transceivers.
In the millimeter wave frequency band D2D mobile phones, the D2D modules include D2D transmitters, D2D receivers, D2D duplexs
Device, millimeter wave D2D antennas, the first local oscillator and the second local oscillator；
First local oscillator is for generating up-conversion local frequency, and the second local oscillator is for generating down coversion local oscillator frequency
Rate；
The D2D transmitters carry out power amplification, filtering and upconversion process to the transmitting signal that RF transceivers export, and obtain
Obtain the transmitting signal that tranmitting frequency is millimeter wave frequency band；The transmitting signal exports after the isolation of D2D duplexers to millimeter wave D2D
Antenna is launched by millimeter wave D2D antennas；
The millimeter wave D2D antennas receive the reception signal of millimeter wave receives frequency；D2D duplexers go out this by frequency separation
Receive that signal and being transmitted in D2D receivers 202 is filtered, low noise amplification and down-converted, acquisitions frequency are target
The reception signal of frequency；The reception signal is transferred to RF transceivers by switch module 30.
In the millimeter wave frequency band D2D mobile phones, the upconversion process is will to emit the tranmitting frequency up-conversion of signal
To millimeter wave frequency band；Millimeter wave tranmitting frequency fmmHairFor：fmmHair= f2Hair+fmm_LOHair, wherein f2HairTo emit the transmitting of signal
Frequency, fmm_LOHairFor up-conversion local frequency.
In the millimeter wave frequency band D2D mobile phones, the down-converted is that the millimeter wave for receiving signal is received frequency
Rate is down-converted to target frequency；Target frequency f2It receivesFor：f2It receives= fmmIt receives-fmm_LOIt receives, wherein fmmIt receivesTo receive the millimeter of signal
Wave receives frequency, fmm_LOIt receivesFor down coversion local frequency.
In the millimeter wave frequency band D2D mobile phones, the switch module includes first switch and the second switch, and described first
The control terminal of switch, the control terminal of second switch are all connected with central processing unit；The data terminal of first switch, the data of second switch
End is all connected with RF transceivers；First transmitting output end of first switch connects cellular transmitter, and the second transmitting of first switch is defeated
Outlet connects D2D transmitters, and the first of second switch, which receives input terminal, connects cellular transceiver, and the second reception of second switch is defeated
Enter end connection D2D receivers.
A kind of communication means using the millimeter wave frequency band D2D mobile phones comprising：
A, the control signal behavior that switch module is exported according to central processing unit receives cellular module or D2D modules with RF
Send out device connection；
B, cellular communication is carried out when cellular module and RF transceivers connect；It is right when D2D modules are connect with RF transceivers
The frequency of sending and receiving signal carries out Frequency mixing processing and carries out the D2D communications of millimeter wave frequency band.
In the communication means of the millimeter wave frequency band D2D mobile phones, in the step A, central processing unit output first
When controlling signal, the data terminal of first switch is connect with the first transmitting output end, and the data terminal of second switch receives defeated with first
Enter end connection, then cellular module is connect with RF transceivers；
When central processing unit exports second control signal, the data terminal of first switch is connect with the second transmitting output end, the
The data terminal of two switches is connect with the second reception input terminal, then D2D modules are connect with RF transceivers.
In the communication means of the millimeter wave frequency band D2D mobile phones, in the step B, D2D modules and RF transceivers
When connection, Frequency mixing processing is carried out to the frequency of sending and receiving signal and is specifically included：
When the data terminal of first switch is connect with the second transmitting output end, D2D transmitters carry out up-conversion to transmitting signal
Processing, millimeter wave frequency band is upconverted to by the tranmitting frequency for emitting signal；
When the data terminal of second switch is connect with the second reception input terminal, lower change is carried out in the docking collection of letters number of D2D receivers
Frequency is handled, and the millimeter wave receives frequency for receiving signal is down-converted to target frequency.
In the communication means of the millimeter wave frequency band D2D mobile phones, in the step B, millimeter wave tranmitting frequency fmmHair
For：fmmHair= f2Hair +fmm_LOHair, wherein f2HairTo emit the tranmitting frequency of signal, fmm_LOHairFor up-conversion local frequency；
Target frequency f2It receivesFor：f2It receives= fmmIt receives-fmm_LOIt receives, wherein fmmIt receivesTo receive the millimeter wave receives frequency of signal,
fmm_LOIt receivesFor down coversion local frequency.
Compared to the prior art, millimeter wave frequency band D2D mobile phones and its communication means provided by the invention, pass through switch module
According to central processing unit export control signal behavior cellular module or D2D modules are connect with RF transceivers, cellular module and
RF transceivers carry out cellular communication when connecting；When D2D modules are connect with RF transceivers, the frequency of sending and receiving signal is mixed
Handle and carry out the D2D communications of millimeter wave frequency band；Realize timesharing switching by the selection of switch module with carry out cellular communication and
The model selection of D2D communications, avoids both of which from influencing each other；To the Frequency mixing processing of sending and receiving signal frequency can make millimeter wave and
4G/3G frequency ranges are compatible with, and improve compatibility.
Description of the drawings
Fig. 1 is the structure diagram of millimeter wave frequency band D2D mobile phones provided by the invention.
Fig. 2 is the Application Example schematic diagram of millimeter wave frequency band D2D mobile phones provided by the invention.
Fig. 3 is the communication means flow chart of millimeter wave frequency band D2D mobile phones provided by the invention.
Specific implementation mode
A kind of millimeter wave frequency band D2D mobile phones of present invention offer and its communication means, are applied to 5G communication products field.It utilizes
Millimeter wave frequency band come realize D2D communicate and existing 3G/4G band communications can be compatible with.To make the purpose of the present invention, technical solution
And advantage is clearer, clear, the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.It should be appreciated that this
Place is described, and specific examples are only used to explain the present invention, is not intended to limit the present invention.
Referring to Fig. 1, millimeter wave frequency band D2D mobile phones provided by the invention include cellular module 10, D2D modules 20, switch
Module 30, RF transceivers 40 and central processing unit 50.The switch module 30 connects cellular module 10, D2D modules 20 and RF and receives
Send out device 40.The corresponding control signal behavior that the switch module 30 is exported according to central processing unit 50 by cellular module 10 or
D2D modules 20 are connect with RF transceivers 40, and cellular communication is carried out when cellular module 10 is connect with RF transceivers 40.D2D modules
20 with RF transceivers 40 when connecting, and is communicated to the D2D that the frequency of sending and receiving signal carries out Frequency mixing processing and carries out millimeter wave frequency band.
Realize that D2D communications can be solved the problem of D2D frequency spectrum resource anxieties using millimeter wave frequency band；It is real by the selection of switch module 30
Existing timesharing switching avoids both of which from influencing each other to carry out the model selection of cellular communication and D2D communications；To sending and receiving signal
The Frequency mixing processing of frequency can be such that millimeter wave and 4G/3G frequency ranges is compatible with, and improve compatibility.
Cellular communication and D2D communications are time-sharing multiplexes, and the timesharing switching is the cellular module 10 in cellular communication
Work, D2D modules 20 are closed；When D2D is communicated, D2D modules 20 work, and cellular module 10 is closed.
Also referring to Fig. 2, the cellular module 10 includes cellular transmitter 101, cellular transceiver 102, honeycomb duplex
Device 103 and cellular band antenna 104.The honeycomb duplexer 103 connects cellular transmitter 101, cellular transceiver 102 and honeycomb
Band antenna 104, the cellular transmitter 101, cellular transceiver 102 are all connected with switch module 30.The cellular transmitter 101
Transmitting signal for being exported to RF transceivers carries out power amplification and is filtered.Honeycomb duplexer 103 isolates transmitting letter
Emitted by cellular band antenna 104 after number.The cellular band antenna 104, which receives, to be received signal and is transferred to cellular transceiver
102, honeycomb duplexer 103 is gone out by frequency separation receives signal, and cellular transceiver 102 is filtered to the reception signal and low noise
RF transceivers 40 are transferred to after sound enhanced processing.
The D2D modules 20 include D2D transmitters 201, D2D receivers 202, D2D duplexers 203, millimeter wave D2D antennas
204, the first local oscillator 205 and the second local oscillator 206.First local oscillator 205 is for generating up-conversion local frequency, and second
Local oscillator 206 is for generating down coversion local frequency.The transmitting signal that the D2D transmitters 201 export RF transceivers 40 into
Row power amplification, filtering and upconversion process obtain the transmitting signal that tranmitting frequency is millimeter wave frequency band.The transmitting signal passes through
Output is launched to millimeter wave D2D antennas 204 by millimeter wave D2D antennas 204 after D2D duplexers 203 are isolated.
The millimeter wave D2D antennas 204 receive the reception signal of millimeter wave receives frequency；D2D duplexers 203 are by frequency point
Separate out the reception signal and being transmitted in D2D receivers 202 be filtered, low noise amplification and down-converted, obtain frequency
For the reception signal of target frequency.The reception signal is transferred to by switch module 30 in RF transceivers 40.
Wherein, the upconversion process is that the tranmitting frequency for emitting signal is upconverted to millimeter wave frequency band, transmitting letter
Number tranmitting frequency become millimeter wave tranmitting frequency.The then millimeter wave tranmitting frequency fmm of the transmitting signal after up-conversionHairFor：
fmmHair = f2Hair +fmm_LOHair.Wherein, f2HairTo emit the tranmitting frequency of signal, fmm_LOHairFor up-conversion local frequency.
The down-converted is that the millimeter wave receives frequency for receiving signal is down-converted to target frequency.Then down coversion
Target frequency f2 afterwardsIt receivesFor：f2It receives= fmmIt receives-fmm_LOIt receives.Wherein, fmmIt receivesTo receive the millimeter wave receives frequency of signal, fmm_
LOIt receivesThe down coversion local frequency generated for the second local oscillator 206.
The switch module 30 includes the control terminal 1, second of first switch K1 and second switch K2, the first switch K1
The control terminal 5 of switch K2 is all connected with central processing unit；The data terminal 2 of first switch K1, the data terminal 6 of second switch K2 are all connected with
RF transceivers 40；The first transmitting output end 3 of first switch K1 connects cellular transmitter 101, the second transmitting of first switch K1
Output end 4 connects D2D transmitters 201, and the first of second switch K2, which receives input terminal 7, connects cellular transceiver 102, second switch
The second of K2 receives input terminal 8 and connects D2D receivers 202.The first switch K1 and second switch K2 is RF switch.
It is to be appreciated that as shown in Fig. 2, the millimeter wave frequency band D2D mobile phones further include touch display screen, RAM, ROM,
The modules such as power supervisor are the prior art, are not described further to it herein.
Please continue to refer to Fig. 1 and Fig. 2, the operation principle of the millimeter wave frequency band D2D mobile phones is：
When user needs to carry out cellular communication, the icon of cellular communication is such as opened on the screen, then central processing unit exports
First control signal makes the data terminal 2 of first switch K1 be connect with the first transmitting output end 3, makes the data terminal 6 of second switch K2
It is connect with the first reception input terminal 7.Whole system enters cellular communication modes.
Under cellular communication emission state, the data terminal 2 of first switch K1 is connected with the first transmitting output end 3 for carrying out
Honeycomb emits.The transmitting signal of RF transceivers output（Its tranmitting frequency is f1Hair）Power amplification and filter are carried out through cellular transmitter
Honeycomb duplexer 103 is transmitted to after wave（Tranmitting frequency is constant, is still f1Hair）, transmitting signal by honeycomb duplexer export after by
Cellular band antenna 104 is launched, so as to complete the transmitting of cellular communication.
Under cellular communication reception state, the data terminal 6 of second switch K2 receives input terminal 7 with first and connects for carrying out
Honeycomb receives.It receives signal to receive by cellular band antenna 104, honeycomb duplexer 103 is gone out to receive signal by frequency separation（Its
Receives frequency is f1It receives）, receive signal and exported after the filtering of cellular transceiver 102 and low noise amplification（Receives frequency is constant, still
For f1It receives）, then RF transceivers 40 are transmitted to by second switch K2, so as to complete the reception of cellular communication.
When user needs to carry out D2D communications, the icon of D2D communications is such as opened on the screen, then central processing unit output the
Two control signals make the data terminal 2 of first switch K1 be connect with the second transmitting output end 4, make second switch K2 data terminal 6 and
Second, which receives input terminal 8, connects.Whole system enters millimeter wave frequency band D2D communication patterns.
Under millimeter wave frequency band D2D communication emission states, the data terminal 2 of first switch K1 connects with the second transmitting output end 4
It is common to and carries out D2D transmittings.The transmitting signal that RF transceivers 40 export（Its tranmitting frequency is f2Hair）Into D2D transmitters 201.
D2D transmitters 201 carry out power amplification, filtering and upconversion process to the transmitting signal.By becoming on D2D transmitters 201
After frequency, emit the tranmitting frequency f2 of signalHairUp-convert to millimeter wave tranmitting frequency fmmHair, and fmmHair = f2Hair +fmm_LOHair（On
Frequency conversion local frequency）.At this point, becoming millimeter wave tranmitting frequency fmmHairTransmitting signal again by D2D duplexers 203 export, by
Millimeter wave D2D antennas are launched, so as to complete the transmitting of millimeter wave D2D communications.
Under millimeter wave frequency band D2D communication reception status, the data terminal 6 of second switch K2 connects with the second reception input terminal 8
It is common to and carries out D2D receptions.Millimeter wave receives frequency fmmIt receivesReception signal by millimeter wave D2D antennas 204 receive, by D2D
Duplexer 203, which goes out to receive signal by frequency separation and is transmitted to progress down coversion, filtering and low noise in D2D receivers 202, to be put
Big processing.After D2D receivers 202 carry out down coversion, the millimeter wave receives frequency fmm of signal is receivedIt receivesIt is down-converted to target frequency
Rate f2It receives, and f2It receives= fmmIt receives-fmm_LOIt receives（Down coversion local frequency）.At this point, target frequency f2It receivesReception signal pass through second
Switch K2 is transferred in RF transceivers 40, so as to complete the reception of millimeter wave D2D communications.
It is to be appreciated that in order to which the D2D of incompatible cellular communication and millimeter wave frequency band is communicated, 202 down coversion of D2D receivers
Target frequency f2 afterwardsIt receivesWith the receives frequency f1 for receiving signal when cellular communicationIt receivesIt is identical.Also, become on D2D transmitters 201
Before frequency, transmitting signal tranmitting frequency f2HairWith the tranmitting frequency f1 for emitting signal when cellular communicationHairIt is identical.Pass through this frequency
Rate is compatible with, and the D2D of cellular communication and millimeter wave frequency band communications is made to maximize compatible shared RF transceivers 40, central processing unit etc.,
Without in addition adding the RF transceivers needed for D2D communication frequencys, to reduce cost, space is saved.
In the specific implementation, millimeter wave frequency band D2D mobile phones are divided into caller and called, caller and called receives frequency and hair
Radio frequency rate occurs in pairs, i.e. the tranmitting frequency of caller corresponds to called receives frequency, and the receives frequency of caller corresponds to called hair
Radio frequency rate.No matter caller or it is called, tranmitting frequency and receives frequency are controlled and set by respective central processing unit,
One-to-one direct communication can be achieved in this way.
It should be understood that the present embodiment mainly uses millimeter wave frequency band, other frequency ranges can also be used in the specific implementation,
Such as hundreds of million idle frequency range, it is not construed as limiting herein.
Based on above-mentioned millimeter wave frequency band D2D mobile phones, the present invention also provides a kind of communication parties of millimeter wave frequency band D2D mobile phones
Method, also referring to Fig. 3, the communication means includes：
The control signal behavior that S100, switch module are exported according to central processing unit is by cellular module or D2D modules and RF
Transceiver connects；
S200, cellular module and RF transceivers carry out cellular communication when connecting；When D2D modules are connect with RF transceivers,
Frequency mixing processing is carried out to the frequency of sending and receiving signal and carries out the D2D communications of millimeter wave frequency band.
In the step S200, when D2D modules are connect with RF transceivers, the frequency of sending and receiving signal is carried out at mixing
Reason specifically includes：
When the data terminal of first switch is connect with the second transmitting output end, D2D transmitters carry out up-conversion to transmitting signal
Processing, millimeter wave frequency band is upconverted to by the tranmitting frequency for emitting signal.Millimeter wave tranmitting frequency fmmHairFor：fmmHair= f1Hair +
fmm_LOHair, wherein f1HairTo emit the tranmitting frequency of signal, fmm_LOHairFor up-conversion local frequency.
When the data terminal of second switch is connect with the second reception input terminal, lower change is carried out in the docking collection of letters number of D2D receivers
Frequency is handled, and the millimeter wave receives frequency for receiving signal is down-converted to target frequency.Target frequency f2It receivesFor：f2It receives= fmm It receives-
fmm_LOIt receives, wherein fmmIt receivesTo receive the millimeter wave receives frequency of signal, fmm_LOIt receivesFor down coversion local frequency.
In conclusion the present invention realizes that D2D is communicated using millimeter wave frequency band, solve the problems, such as that D2D frequency spectrum resources are nervous.
It is very wide based on millimeter wave spectral range, it easily realizes the antenna transmitting-receiving of narrow beam and high-gain, improves anti-interference, also help small
Typeization designs.The pattern switching that cellular communication and D2D communications are solved using the method for timesharing switching, avoids both of which mutual
It influences.Up-conversion or down-converted are carried out to sending and receiving signal frequency, millimeter wave and 4G/3G frequency ranges can be made to be compatible with, realize milli
Metric wave is compatible with the function of existing communication system frequency range, while providing communication infrastructure for following 5G.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect range.
Claims (9)
1. a kind of millimeter wave frequency band D2D mobile phones, including RF transceivers and central processing unit, which is characterized in that further include honeycomb mould
Block, D2D modules and switch module；
The control signal behavior that the switch module is exported according to central processing unit receives and dispatches cellular module or D2D modules with RF
Device connects, and cellular communication is carried out when cellular module is connect with RF transceivers；When D2D modules are connect with RF transceivers, to sending and receiving
The frequency of signal carries out Frequency mixing processing and carries out the D2D communications of millimeter wave frequency band；
The D2D modules include D2D transmitters, D2D receivers, D2D duplexers, millimeter wave D2D antennas, the first local oscillator and
Two local oscillators；
First local oscillator is for generating up-conversion local frequency, and the second local oscillator is for generating down coversion local frequency；
The D2D transmitters carry out power amplification, filtering and upconversion process to the transmitting signal that RF transceivers export, and are sent out
Radio frequency rate is the transmitting signal of millimeter wave frequency band；The transmitting signal after the isolation of D2D duplexers output to millimeter wave D2D days
Line is launched by millimeter wave D2D antennas；
The millimeter wave D2D antennas receive the reception signal of millimeter wave receives frequency；D2D duplexers go out the reception by frequency separation
Signal and being transmitted in D2D receivers is filtered, low noise amplification and down-converted, and it is connecing for target frequency to obtain frequency
The collection of letters number；The reception signal is transferred to RF transceivers by switch module；
Target frequency after D2D receiver down coversions is identical as the receives frequency of signal is received when cellular communication；In D2D transmitters
Before up-conversion, transmitting signal tranmitting frequency hair with when cellular communication transmitting signal tranmitting frequency send out identical.
2. millimeter wave frequency band D2D mobile phones according to claim 1, which is characterized in that the cellular module includes cellular abscess
Emitter, cellular transceiver, honeycomb duplexer and cellular band antenna；
The transmitting signal that the cellular transmitter exports RF transceivers carries out power amplification and is filtered, honeycomb duplexer every
Emitted by cellular band antenna after separating out transmitting signal；
The cellular band antenna, which receives, to be received signal and is transferred to cellular transceiver, and honeycomb duplexer is gone out to connect by frequency separation
Collect mail number, cellular transceiver to the reception signal be filtered and low noise amplification processing after be transferred to RF transceivers.
3. millimeter wave frequency band D2D mobile phones according to claim 1, which is characterized in that the upconversion process is will to emit
The tranmitting frequency of signal upconverts to millimeter wave frequency band；Millimeter wave tranmitting frequency fmmHairFor：fmmHair = f2Hair +fmm_LOHair,
In, f2HairTo emit the tranmitting frequency of signal, fmm_LOHairFor up-conversion local frequency.
4. millimeter wave frequency band D2D mobile phones according to claim 3, which is characterized in that the down-converted is that will connect
The millimeter wave receives frequency of the collection of letters number is down-converted to target frequency；Target frequency f2It receivesFor：f2It receives= fmmIt receives-fmm_LOIt receives, wherein
fmmIt receivesTo receive the millimeter wave receives frequency of signal, fmm_LOIt receivesFor down coversion local frequency.
5. millimeter wave frequency band D2D mobile phones according to claim 1, which is characterized in that the switch module is opened including first
It closes and second switch, the control terminal of the first switch, the control terminal of second switch is all connected with central processing unit；First switch
Data terminal, second switch data terminal be all connected with RF transceivers；First transmitting output end of first switch connects cellular transmitter,
Second transmitting output end of first switch connects D2D transmitters, and the first of second switch, which receives input terminal, connects cellular transceiver,
The second of second switch receives input terminal and connects D2D receivers.
6. a kind of communication means using millimeter wave frequency band D2D mobile phones described in claim 1, which is characterized in that including：
A, the control signal behavior that switch module is exported according to central processing unit is by cellular module or D2D modules and RF transceivers
Connection；
B, cellular communication is carried out when cellular module and RF transceivers connect；When D2D modules are connect with RF transceivers, to sending and receiving
The frequency of signal carries out Frequency mixing processing and carries out the D2D communications of millimeter wave frequency band.
7. the communication means of millimeter wave frequency band D2D mobile phones according to claim 6, which is characterized in that in the step A
In, when central processing unit exports first control signal, the data terminal of first switch is connect with the first transmitting output end, second switch
Data terminal with first reception input terminal connect, then cellular module is connect with RF transceivers；
When central processing unit exports second control signal, the data terminal of first switch is connect with the second transmitting output end, and second opens
The data terminal of pass is connect with the second reception input terminal, then D2D modules are connect with RF transceivers.
8. the communication means of millimeter wave frequency band D2D mobile phones according to claim 6, which is characterized in that in the step B
In, when D2D modules are connect with RF transceivers, Frequency mixing processing is carried out to the frequency of sending and receiving signal and is specifically included：
When the data terminal of first switch is connect with the second transmitting output end, D2D transmitters carry out upconversion process to transmitting signal,
The tranmitting frequency for emitting signal is upconverted into millimeter wave frequency band；
When the data terminal of second switch is connect with the second reception input terminal, carried out at down coversion in the docking collection of letters number of D2D receivers
Reason, target frequency is down-converted to by the millimeter wave receives frequency for receiving signal.
9. the communication means of millimeter wave frequency band D2D mobile phones according to claim 8, which is characterized in that in the step B
In, millimeter wave tranmitting frequency fmmHairFor：fmmHair = f2Hair +fmm_LOHair, wherein f2HairTo emit the tranmitting frequency of signal, fmm_
LOHairFor up-conversion local frequency；
Target frequency f2It receivesFor：f2It receives= fmmIt receives -fmm_LOIt receives, wherein fmmIt receivesTo receive the millimeter wave receives frequency of signal, fmm_
LOIt receivesFor down coversion local frequency.
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