CN108768571A - The frequency division multiplexing transmission method and device of G.fast signals, VDSL2 signals and voice signal in copper wire - Google Patents
The frequency division multiplexing transmission method and device of G.fast signals, VDSL2 signals and voice signal in copper wire Download PDFInfo
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- CN108768571A CN108768571A CN201810786144.2A CN201810786144A CN108768571A CN 108768571 A CN108768571 A CN 108768571A CN 201810786144 A CN201810786144 A CN 201810786144A CN 108768571 A CN108768571 A CN 108768571A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/04—Frequency-transposition arrangements
- H04J1/045—Filters applied to frequency transposition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
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Abstract
The present invention provides a kind of G.fast signals, the frequency division multiplexing transmission method of VDSL2 signals and voice signal in copper wire, including：A, G.fast signals, VDSL2 signals and adjacent two signal of voice signal Mid Frequency are chosen once filter, couple, forms the first mixed signal and a unselected independent signal；B, the mixed signal and the independent signal are subjected to secondary filtering, coupling, form the second mixed signal and is transmitted in copper wire.Correspondence also provides a kind of frequency division multiplexing transmitting device of above-mentioned signal, broadband frequency range difference based on G.fast signals, VDSL2 signals and voice signal, three kinds of signals successively filter twice, are coupled, it is that frequency range is not overlapped and does not interact to ensure each signal.It solves the problems, such as that G.fast technologies are directly accessed existing VDSL2 broadband networks and the two is caused to interfere with each other as a result, meets the demand that VDSL2 user increases copper wire broadband access rate.
Description
Technical field
The present invention relates to network communication technology field, especially a kind of G.fast signals, VDSL2 signals and voice signal exist
Frequency division multiplexing transmission method in copper wire and device.
Background technology
For traditional copper wire network based on speech business, the data service of early stage passes through voice-frequency dialing Modem and ISDN mode
It provides, limited access rate is difficult the demand for meeting growing data service bandwidth.With skills such as ADSL, VDSL2
The popularization and application of art, access rate are further promoted to Mbps from kbps.ADSL described previously is Asymmetrical Digital Subscriber Line.
Common telephone wire is divided into using frequency multiplexing technique by three phone, upstream data and downlink data relatively independent letters
Road, so as to avoid mutual interference.User can not have to worry speed of surfing the Internet and speech quality to surf the Internet when making a phone call
The case where decline.And VDSL2 is Very High Speed Digital Subscriber Line.For technical standpoint, VDSL2 actually may be regarded as ADSL's
Upgrading, average transmission rate are higher by 5 to 10 times than ADSL.
The network service that broadband access can be provided is also low from earliest BBS(Bulletin Board System) (BBS), web page browsing etc.
Bandwidth applications develop to voice communication, video calling, high definition television, virtual reality etc. bandwidth applications.
With emerging services such as OTT (Over-The-Top) video, 4K TVs, wisdom family, the following cloud business epoch
It rises, ultra-wide band network pace of construction is being accelerated.For newly-built community, generally use fiber to the home (FTTH, Fiber To
The Home) mode.But for ripe cell, for fiber reforming because being related to the complex engineerings such as knob-and-tube wiring, construction progress is slow.In
It is that operator considers how to move down into optical fiber in corridor or entrance, it is last a bit of to recycle original access medium
(especially traditional copper wire) provides ultrahigh speed broadband access.Since access is apart from short, operator desires access to rate and reaches gigabit.
As the alternative solution of FTTH, G.fast comes into being.G.fast is that a standardization of International Telecommunication Union (ITU) is suggested,
Purpose is to reach the speed of optical fiber in the copper wire no more than 250m length, i.e., more than 1Gpbs.The initial rank of high band of G.fast
Section can use 106MHz, future to extend to 212MHz.
G.fast signals can reuse ripe cell and have copper wire resource, using broader frequency spectrum resource, in traditional copper wire
The upper high bandwidth access for providing the optical fiber that is equal to for being up to 1Gpbs, realizes faster access, faster deployment, faster income.
As shown in figure 5, the broadband frequency range of voice signal is 0Hz~f1The broadband frequency range of Hz, VDSL2 signal is f1Hz~
f3Hz.The bin width that VDSL2 signals occupy is limited, and copper wire broadband access rate is insufficient for the needs of super application.Such as
Fig. 6 show the broadbands G.fast frequency range schematic diagram, and the broadband frequency range of G.fast signals is f2Hz~f4Hz, wherein f1< f2< f3<
f4.As G.fast signals are by the further expansion of bin width, copper wire broadband access rate has strided forward the Gpbs epoch, is more
Super application provides wide space.But comparison diagram 5 and Fig. 6 are it is not difficult to find that the frequency that VDSL2 signals are used with G.fast signals
Some is overlapping to section, and G.fast signals, which are directly accessed existing VDSL2 signals copper wire broadband environment, will certainly cause two
Person interferes with each other and leads to not use.
Invention content
The main purpose of the present invention is to provide a kind of G.fast signals, VDSL2 signals and voice signals in copper wire
Frequency division multiplexing transmission method and device overcome defect in the prior art using frequency division filtering technique.
The method of the frequency division multiplexing transmission of the G.fast signals, VDSL2 signals and voice signal in copper wire, including step
Suddenly：
A, G.fast signals, VDSL2 signals and adjacent two signals of voice signal Mid Frequency are chosen and carry out a secondary coupling, shape
At the first mixed signal and a unselected independent signal；
In one secondary coupling, the signal of the high band in two signal for forming the first mixed signal is subjected to high pass filter
Wave, another signal carry out low-pass filtering, are then multiplexed into frequency range shared by first mixed signal；
B, it by the mixed signal and the independent signal this two signal two secondary couplings of progress, forms the second mixed signal and exists
It is transmitted in copper wire；
In two secondary coupling, the signal of the high band in two signal for forming the second mixed signal is subjected to high pass filter
Wave, another signal carry out low-pass filtering, are then multiplexed into frequency range shared by second mixed signal.
By upper, the broadband frequency range difference based on G.fast signals, VDSL2 signals and voice signal carries out three kinds of signals
Successively two secondary coupling, ensureing each signal is that frequency range is not overlapped and does not interact.Solve G.fast technologies as a result,
It is directly accessed the problem of existing VDSL2 broadband networks cause the two to interfere with each other, VDSL2 user's increase copper wire broadband is met and connects
Enter the demand of rate.
Wherein, in step A, the two adjacent signals include VDSL2 signals and voice signal；
The high-pass filtering and the low-pass filtering are with the upper frequency limit f of voice signal broadband frequency range1Hz is node,
The VDSL2 signals and the voice signal are filtered out respectively；
In step B, the high-pass filtering and the low-pass filtering are with the lower-frequency limit of G.fast signals broadband frequency range
f2Hz to VDSL2 signals broadband frequency range upper frequency limit f3Any frequency in the locations Hz is node, high-pass filtering filter
Except f2Hz retains the node to f to the G.fast signals of the node frequency range4The G.fast signals of Hz frequency ranges；
Low-pass filtering crosses the mixed signal filtered out higher than the node frequency range, retains described less than the node
Mixed signal；
Wherein, f1Hz < f2Hz < f3Hz < f4Hz。
By upper, with the lower-frequency limit f of G.fast signals broadband frequency range2Hz is to VDSL2 signals broadband frequency range
Upper frequency limit f3Any frequency in the locations Hz is node, will be above the coupling of G.fast signals or separation of the node.By
The distance transmitted needed for G.fast technologies is only one kilometer or so, therefore can be passed using higher frequency range in copper wire
It is defeated.Based on this, even if the low frequency part that G.fast signals coincide with VDSL2 signals is filtered out, G.fast letters will not be influenced
Number transmission speed.Solve the problems, such as that G.fast technologies are directly accessed existing VDSL2 signals copper wire and the two is caused to interfere with each other,
Meet the demand that VDSL2 user increases copper wire broadband access rate.
Wherein, in step B, the high-pass filtering and the low-pass filtering are with the frequency of VDSL2 signals broadband frequency range
Upper limit f3Hz is node, and high-pass filtering is filtered out less than f3The G.fast signals of Hz frequency ranges retain f3Hz to f4The G.fast of Hz frequency ranges
Signal；
Low-pass filtering, which retains, is less than f3The mixed signal of Hz frequency ranges.
By upper, with the f3Hz is node, in the case where retaining VDSL2 signal whole frequency ranges, filters out G.fast signals
Low frequency part, on the one hand ensure using VDSL2 signal users demand, make full use of the existing resource of VDSL2 user；It is another
The low frequency part that aspect filters out G.fast signals also substantially will not transmit it and have a negative impact, and kill two birds with one stone.
Wherein, in step A, the two adjacent signals include G.fast signals and VDSL2 signals；
The high-pass filtering and the low-pass filtering are with the lower-frequency limit f of G.fast signals broadband frequency range2Hz is to institute
State the upper frequency limit f of VDSL2 signals broadband frequency range3Any frequency in the locations Hz is node, and high-pass filtering filters out f2Hz is extremely
The G.fast signals of the node frequency range retain the node to f4The G.fast signals of Hz frequency ranges；
Low-pass filtering, which is crossed, filters out the node to f3The VDSL2 signals of Hz frequency ranges retain f1The VDSL2 of the Hz~node
Signal；
In step B, the high-pass filtering and the low-pass filtering are with the upper frequency limit of voice signal broadband frequency range
f1Hz is node, filters out the mixed signal and the voice signal respectively；
Wherein, f1Hz < f2Hz < f3Hz < f4Hz。
By upper, with the lower-frequency limit f of G.fast signals broadband frequency range2Hz is to VDSL2 signals broadband frequency range
Upper frequency limit f3Any frequency in the locations Hz is node, will be above the coupling of G.fast signals or separation of the node.By
The distance transmitted needed for G.fast technologies is only one kilometer or so, therefore can be passed using higher frequency range in copper wire
It is defeated.Based on this, even if the low frequency part that G.fast signals coincide with VDSL2 signals is filtered out, G.fast letters will not be influenced
Number transmission speed.It solves G.fast technologies and is directly accessed existing VDSL2 signals copper wire and both cause to make due to frequency range overlapping
At the problem of interfering with each other, voice signal, VDSL2 signals and filtered G.fast signals are not overlapped in frequency range, can
To realize frequency division multiplexing, the demand that VDSL2 user increases copper wire broadband access rate is met.
In step A, the high-pass filtering and the low-pass filtering are with the upper frequency limit of VDSL2 signals broadband frequency range
f3Hz is node, and high-pass filtering filters out f2Hz to f3The G.fast signals of Hz frequency ranges retain f3Hz to f4The G.fast of Hz frequency ranges believes
Number；
Low-pass filtering retains f1Hz to f3The VDSL2 signals of Hz frequency ranges.
By upper, with the f3Hz is node, makes voice signal, VDSL2 signals and filtered G.fast signals in frequency range
On be not overlapped, frequency division multiplexing may be implemented, meet VDSL2 user increase copper wire broadband access rate demand.
In addition, the application correspondence also provides a kind of G.fast signals, the multiplexing of VDSL2 signals and voice signal in copper wire
Transmitting device, including：
First separator, for by selected G.fast signals, VDSL2 signals and voice signal Mid Frequency it is adjacent two
Signal carries out a secondary coupling, forms the first mixed signal and a unselected independent signal；
One secondary coupling includes that the signal of the high band in two signal for will be formed the first mixed signal carries out high pass
Filtering, another signal carry out low-pass filtering, are then multiplexed into frequency range shared by first mixed signal；
Second separator is connect with first separator, by the mixed signal and the independent signal this two signal
Two secondary couplings are carried out, the second mixed signal is formed and is transmitted in copper wire；
Two secondary coupling includes that the signal of the high band in two signal for will be formed the second mixed signal carries out high pass
Filtering, another signal carry out low-pass filtering, are then multiplexed into frequency range shared by second mixed signal.
By upper, voice signal, VDSL2 signals and filtered G.fast signals are not overlapped in frequency range, may be implemented
Frequency division multiplexing.It solves the problems, such as that G.fast technologies are directly accessed existing VDSL2 signals copper wire and the two is caused to interfere with each other, meets
VDSL2 user increases the demand of copper wire broadband access rate.
Wherein,
First separator includes high-pass filter and low-pass filter；
The equipment that high-pass filter one end of first separator is connected to transmission VDSL2 signals, first separation
The equipment that low-pass filter one end of device is connected to transmission voice signal；The other end of the high-pass filter of first separator
It is connected to a mixed signal port with the other end of the low-pass filter；
Second separator includes high-pass filter and low-pass filter；
The equipment that high-pass filter one end of second separator is connected to transmission G.fast signals, the other end are connected to
Copper wire；
Low-pass filter one end of second separator is connected to the mixed signal port, and the other end is connected to described
Copper wire.
By upper, the broadband frequency range difference based on G.fast signals, VDSL2 signals and voice signal utilizes height in separator
Three kinds of signals are carried out successively two secondary couplings by logical, low-pass filter bidirectional conduction characteristic, and it is relative clean to ensure each signal
And do not interact.Solve as a result, G.fast technologies be directly accessed existing VDSL2 signals copper wire both cause it is mutually dry
The problem of disturbing meets the demand that VDSL2 user increases copper wire broadband access rate.
Wherein,
First separator includes high-pass filter and low-pass filter；
The equipment that high-pass filter one end of first separator is connected to transmission G.fast signals, first separation
The equipment that low-pass filter one end of device is connected to transmission VDSL2 signals；
The other end of the high-pass filter of first separator and the other end of the low-pass filter are connected to
One mixed signal port；
Second separator includes high-pass filter and low-pass filter；
High-pass filter one end of second separator is connected to the mixed signal port, and the other end is connected to described
Copper wire；
The equipment that low-pass filter one end of second separator is connected to transmission voice signal, the other end are connected to institute
State copper wire.
By upper, the broadband frequency range difference based on G.fast signals, VDSL2 signals and voice signal utilizes height in separator
Three kinds of signals are carried out successively two secondary couplings by logical, low-pass filter bidirectional conduction characteristic, and to ensure each signal, which be frequency range, does not have
It overlapping and does not interact.It solves G.fast technologies as a result, and is directly accessed existing VDSL2 signals copper wire and both cause mutually
The problem of interference, meets the demand that VDSL2 user increases copper wire broadband access rate.
Description of the drawings
Fig. 1 is the frequency division multiplexing transmission method flow chart of G.fast, VDSL2 and voice signal in copper wire；
Fig. 2 is the frequency division multiplexing transmitting device first embodiment signal of G.fast, VDSL2 and voice signal in copper wire
Figure；
Fig. 3 is the frequency division multiplexing transmitting device second embodiment signal of G.fast, VDSL2 and voice signal in copper wire
Figure；
Fig. 4 is the broadband frequency range schematic diagram of G.fast, VDSL2 and voice signal frequency division multiplexing transmission in copper wire；
Fig. 5 is the broadband frequency range schematic diagram of VDSL2 and voice signal in copper wire in the prior art
Fig. 6 is the broadband frequency range schematic diagram of G.fast and voice signal in copper wire in the prior art.
Specific implementation mode
Referring to Fig. 1~Fig. 4 to G.fast signals of the present invention, VDSL2 signals and voice signal in copper wire
Multiplex transmission method and device be described in detail.
As shown in Figure 1, the frequency division multiplexing transmission method packet of G.fast signals, VDSL2 signals and voice signal in copper wire
Include following steps：
S100：G.fast signals, VDSL2 signals and voice signal are subjected to a secondary coupling in local side, form one group of mixing
Signal and one group of independent signal.
The local side refers to the side for providing terminal access, generally comprises interchanger or back end machine.As shown in Fig. 2, office
The Central Transmission unit at end is used for transmission VDSL2 signals and G.fast signals, be respectively shown in corresponding diagram 2 ATU-C/VDSL2 and
ATU-C/G.fast, the telephone exchange modem as asymmetric digital subscriber line component part.The phone of local side is handed over
Exchange device transmits voice signal.
Described in background technology, the broadband frequency range of voice signal is 0Hz~f1The broadband frequency range of Hz, VDSL2 signal is
f1Hz~f3The broadband frequency range of Hz, G.fast signal is f2Hz~f4Hz, f1< f2< f3< f4, wherein f1For 4KH, f2For 1MHz,
f3For 17MHz, f4For 216MHz.
The first separator of local side is set, includes a high-pass filter and a low-pass filtering in the first separator of the local side
Device.The both ends of high-pass filter are separately connected the low-pass filter in second separator of ATU-C/VDSL2 and local side described hereinafter
Port；The both ends of low-pass filter are separately connected the low-pass filtering in the second separator of the telephony switching gear and the local side
Device port.High-pass filter connects the port of the second separator with low-pass filter and is known as mixed signal in the first separator of local side
Port.
In conjunction with shown in Fig. 5, the two filter of the first separator of local side is with the upper frequency limit f of voice signal broadband frequency range1Hz
For node, high pass, low-pass filtering are carried out respectively, to filter out voice signal and VDSL2 signals respectively.The first separator of local side
The voice signal and the VDSL2 signals are coupled, one group of mixed signal is formed.
S200：Mixed signal and independent signal are subjected to two secondary couplings in local side, form G.fast, VDSL2 and speech letter
Number mixed signal be transmitted to network copper wire.
The second separator of local side is set, equally includes a high-pass filter and a low pass filtered in the second separator of the local side
Wave device.The both ends of high-pass filter are separately connected ATU-C/G.fast and network copper wire, and the network copper wire is telephone wire, use
In connection local side and user terminal described hereinafter；The both ends of low-pass filter are separately connected the mixing letter of the first separator of the local side
Number port and the network copper wire.
In conjunction with shown in Fig. 5 and Fig. 6, the two filter of the second separator of local side is in the frequency of VDSL2 signals broadband frequency range
Limit f3Hz is node, and the first separator of local side is transmitted in the G.fast signals and step S100 to ATU-C/G.fast transmission
The mixed signal of voice signal and VDSL2 signals carries out high pass, low-pass filtering respectively, to filter out respectively G.fast signals and
The mixed signal.The G.fast signals that the mixed signal and ATU-C/G.fast are transmitted are coupling in by the second separator of local side
In the network copper wire, the mixed signal of G.fast signals as shown in Figure 4, VDSL2 signals and speech is formed, network copper is passed through
Line is transferred to user terminal.
It is with the upper frequency limit f of VDSL2 signals broadband frequency range in the present embodiment3Hz is node, in actual use and unlimited
In this, referring to figs 5 and 6, with the lower-frequency limit f of G.fast signals broadband frequency range2Hz is wide to the VDSL2 signals
Upper frequency limit f with frequency range3Any frequency in the locations Hz is node, to the G.fast signals of ATU-C/G.fast transmission
With the mixed signal of the first separator of local side is transmitted in step S100 voice signal and VDSL2 signals carry out respectively high pass,
Low-pass filtering, to filter out G.fast signals and the mixed signal respectively.I.e. high-pass filtering filters out f2Hz to the node frequency
The G.fast signals of section, retain the node to f4The G.fast signals of Hz frequency ranges；Low-pass filtering, which is crossed, to be filtered out higher than node frequency
The mixed signal of section retains the mixed signal less than the node.
S300：In user terminal, the mixed signal of G.fast signals, VDSL2 signals and speech is subjected to first separation, separation
For one group of independent signal and one group of mixed signal.
The user terminal is corresponding with the local side.It is provided with the second separator of user terminal, internal includes that a high pass is filtered
Wave device and a low-pass filter.The both ends of high-pass filter are separately connected the network copper wire and user terminal G.fast modulation /demodulation
Device, corresponding diagram 2 show ATU-R/G.fast；The both ends of low-pass filter are separately connected the network copper wire and use described hereinafter
Mixed signal port in the first separator of family end.
Two filter in the second separator of user terminal is with the upper limit f of VDSL2 signals broadband frequency range3Hz is node, right
The mixed signal of G.fast signals, VDSL2 signals and voice signal carries out high pass, low-pass filtering, isolates individual G.fast
Signal, and the mixed signal including VDSL2 signals and voice signal.
S400：In user terminal, the mixed signal in step S300 is subjected to secondary separation, isolates two groups of independent signals.
The first separator of user terminal is set, equally includes that a high-pass filter and one are low in the first separator of the user terminal
Bandpass filter.The both ends of the high-pass filter are separately connected the low-pass filter port of the second separator of user terminal and the use
Family end VDSL2 modems, corresponding diagram 2 show ATU-R/VDSL2；The both ends of low-pass filter are separately connected the user
Hold low-pass filter port and the telephone set of the second separator.High-pass filter, low-pass filter in the first separator of user terminal
It is known as the mixed signal port of the first separator with the connecting pin of the second separator.
The two filter is with the upper limit f of the broadband frequency range of voice signal1Hz is node, is believed VDSL2 signals and speech
Number mixed signal carry out high pass, low-pass filtering.To isolate VDSL2 signals and voice signal.
Above-mentioned steps are to be exported by local side, and user terminal illustrates for receiving.Due to above-mentioned local side separator and use
Filter in the separator of family end is bidirectional conduction in its passband frequency range, i.e., signal can be transmitted to from any one end
The other end.Naturally it can be appreciated that further including being exported by user terminal, the embodiment of local side reception.That is the user terminal second of user terminal
VDSL2 signals and voice signal are carried out coupling and form mixed signal by separator, and the first separator of user terminal again believes G.fast
Number and aforementioned mixed signal coupling to form the mixed signal of G.fast signals, VDSL2 signals and voice signal.In local side, office
Hold the second separator by the mixed signal of G.fast signals, VDSL2 signals and voice signal isolate G.fast signals and by
The mixed signal of VDSL2 signals and voice signal composition, what the first separator of local side again formed VDSL2 signals and voice signal
Mixed signal is separated into VDSL2 signals, voice signal.
The first separator of above-mentioned local side and the first separator of user terminal are with the upper limit f of the broadband frequency range of VDSL23Hz is section
Point, filters out less than f3The G.fast signals of Hz frequency ranges.Due to the distance transmitted needed for G.fast technologies is only one kilometer or so (away from
From shorter), therefore higher frequency range in copper wire can be utilized to be transmitted.Based on this, even if G.fast signals and VDSL2 are believed
Number low frequency part to coincide filters out that (the corresponding G.fast signals broadband frequency range that filters out is f2Hz~f3Hz), will not influence
The transmission speed of G.fast signals.
Through the above technical solutions, alloing voice signal, VDSL2 signals and G.fast signals simultaneously in copper networks
Transmission without interfering with each other, constitute three frequency range frequency division multiplexings as shown in Figure 4, solve G.fast technologies be directly accessed it is existing
The problem of VDSL2 signal copper wire causes the two to interfere with each other meets the need that VDSL2 user increases copper wire broadband access rate
It asks.
In addition, the frequency division multiplexing that the present invention also provides G.fast signals, VDSL2 signals and voice signal in copper wire passes
The second embodiment of transmission method includes the following steps in conjunction with shown in Fig. 3：
S100：G.fast signals, VDSL2 signals and voice signal are subjected to a secondary coupling in local side, form one group of mixing
Signal and one group of independent signal.
The first separator of local side is set, includes a high-pass filter and a low-pass filtering in the first separator of the local side
Device.The both ends of high-pass filter are separately connected the filter of the high pass in second separator of ATU at the Central Office-C/G.fast and local side described hereinafter
Wave device port；The both ends of low-pass filter are separately connected the high pass in the second separator of ATU at the Central Office-C/VDSL2 and the local side
Port of wave filter.The company of high-pass filter and low-pass filter and the second separator of local side described hereinafter in the first separator of local side
It connects end and is known as mixed signal port.
Referring to figs 5 and 6, the two filter of the first separator of local side is with the upper frequency limit f of the broadbands VDSL2 frequency range3Hz
For node, high pass, low-pass filtering are carried out respectively, to filter out VDSL2 signals and G.fast signals respectively.Local side first detaches
Device couples the G.fast signals for VDSL2 signals and the ATU-C/G.fast transmission that ATU-C/VDSL2 is transmitted to form one group of mixing
Signal.
It is with the upper frequency limit f of VDSL2 signals broadband frequency range in the present embodiment3Hz is node, in actual use and unlimited
In this, referring to figs 5 and 6, with the lower-frequency limit f of G.fast signals broadband frequency range2Hz is wide to the VDSL2 signals
Upper frequency limit f with frequency range3Any frequency in the locations Hz is node, to the G.fast signals of ATU-C/G.fast transmission
With ATU-C/VDSL2 transmission VDSL2 signals carry out high pass, low-pass filtering respectively, to filter out respectively G.fast signals and
VDSL2 signals.I.e. high-pass filtering filters out f2Hz retains the node to f to the G.fast signals of the node frequency range4Hz frequency ranges
G.fast signals；Low-pass filtering, which is crossed, filters out the node to f3The VDSL2 signals of Hz frequency ranges retain f1Hz~the node it is described
VDSL2 signals.
S200：Mixed signal and independent signal are subjected to two secondary couplings in local side, form G.fast, VDSL2 and speech
Mixed signal is transmitted to copper wire.
The second separator of local side is set, equally includes a high-pass filter and a low pass filtered in the second separator of the local side
Wave device.The both ends of high-pass filter are separately connected mixed signal port and the network copper wire of the first separator of the local side, described
Network copper wire is telephone wire, for connecting local side and the user terminal；The both ends of low-pass filter are separately connected telephone exchange
Equipment and the network copper wire.
In conjunction with shown in Fig. 5 and Fig. 6, the two filter of the second separator of local side is with the upper frequency limit of voice signal broadband frequency range
f1Hz is node, and the first separator of local side is transmitted in the voice signal and step S100 to telephony switching gear transmission
The mixed signal of G.fast signals and VDSL2 signals carries out high pass, low-pass filtering respectively, to filter out respectively voice signal and
The mixed signal.The voice signal and mixed signal are coupling in the network copper wire by the second separator of local side, are formed
The mixed signal of G.fast signals, VDSL2 signals and speech as shown in Figure 4, passes through network copper transmission to user terminal.
S300：In user terminal, the mixed signal of G.fast, VDSL2 and speech is subjected to first separation, is separated into one group of list
Only signal and one group of mixed signal.
It is provided with the second separator of user terminal, internal includes a high-pass filter and a low-pass filter.High-pass filtering
The both ends of device are separately connected the mixed signal port of the first separator of the network copper wire and user terminal；The both ends of low-pass filter
It is separately connected the network copper wire and telephone set.
Two filter in the second separator of user terminal is with the upper frequency limit f of voice signal broadband frequency range1Hz is node, right
The mixed signal of G.fast signals, VDSL2 signals and voice signal carries out high pass, low-pass filtering, is separated into individual speech letter
Number, and the mixed signal including G.fast signals and VDSL2 signals.
S400：In user terminal, the mixed signal in step S300 is subjected to secondary separation, is separated into two groups of independent signals.
The first separator of user terminal is set, equally includes that a high-pass filter and one are low in the first separator of the user terminal
Bandpass filter.The both ends of the high-pass filter are separately connected high-pass filter port and the institute of the second separator of the user terminal
State user terminal G.fast modems ATU-R/G.fast；The both ends of low-pass filter are separately connected the user terminal second and divide
High-pass filter port from device and user terminal VDSL2 modems ATU-R/VDSL2.The high pass of the first separator of user terminal
One end that filter and low-pass filter are connect with the second separator of user terminal is known as the mixed signal of the first separator of user terminal
Port.
The two filter is with the upper frequency limit f of VDSL2 signals broadband frequency range3Hz is node, to VDSL2 signals and
The mixed signal of G.fast signals carries out high pass, low-pass filtering.To isolate VDSL2 signals and G.fast signals.
Similarly with first embodiment, second embodiment is also to be exported by local side, and user terminal illustrates for receiving.No
The case where indigestibility further includes being exported by user terminal, and local side receives, details are not described herein.The present embodiment and first embodiment solution
Certainly the technical issues of, is identical, is low frequency end regions and the equitant part in VDSL2 high bands region for filtering out G.fast signals,
Voice signal, VDSL2 signals and G.fast signals is set to be transmitted in copper networks simultaneously, without interfering with each other.
Frequency division multiplexing transmission dress corresponding, that the present invention also provides a kind of G.fast, VDSL2 and voice signal in copper wire
It sets, includes the local side and user terminal connected by network copper wire.
It is illustrated in figure 2 the principle schematic of the frequency division multiplexing transmitting device first embodiment, local side includes：
Central Transmission unit, ATU-C/VDSL2 and ATU-C/G.fast shown in Fig. 2 are respectively used to transmission VDSL2 signals
With G.fast signals.
Telephony switching gear is used for transmission voice signal.
The frequency division multiplexing transmitting device includes the second separator of the first separator of local side and local side.
Wherein, the first separator of local side includes a high-pass filter and a low-pass filter.
The both ends of the high-pass filter in the first separator of local side are separately connected the ATU-C/VDSL2 and local side
Low-pass filter port in two separators, with the upper frequency limit f of voice signal broadband frequency range1Hz is node, filters out and is more than
f1The VDSL2 signals of Hz；
The both ends of the low-pass filter in the first separator of local side are separately connected the telephony switching gear and described
Low-pass filter port in the second separator of local side, with the upper frequency limit f of voice signal broadband frequency range1Hz is node, filtering
Go out to be less than f1The voice signal of Hz.
The high-pass filter, low-pass filter in the first separator of local side is low in the second separator of the local side
One end of bandpass filter connection is mixed signal port, realizes that the VDSL2 signals that will filter out and voice signal are coupled, shape
At the mixed signal of VDSL2 signals and voice signal.
The second separator of local side includes a high-pass filter and a low-pass filter.
The both ends of the high-pass filter in the second separator of local side are separately connected the ends G.fast of Central Transmission unit
Mouth and network copper wire, with the upper frequency limit f of VDSL2 signals broadband frequency range3Hz is node, is filtered out more than f3The G.fast of Hz believes
Number；
The network copper wire is telephone wire, for connecting local side and user terminal described hereinafter；
The both ends of low-pass filter in the second separator of local side are separately connected the mixing letter of the first separator of the local side
Number port and the network copper wire, with the upper frequency limit f of VDSL2 signals broadband frequency range3Hz is node, is filtered out less than f3Hz's
The mixed signal of VDSL2 signals and voice signal.
The connecting pin of the high-pass filter in the second separator of local side and the network copper wire and low-pass filter with
The connecting pin of the network copper wire is connected, to realize the mixed signal of the VDSL2 signals and voice signal that will filter out, with
And G.fast signals are coupled, and the mixed signal of G.fast signals, VDSL2 signals and voice signal is formed.
It is with the upper frequency limit f of VDSL2 signals broadband frequency range in the second separator of local side in the present embodiment3Hz is node,
It is not limited to this in actual use, referring to figs 5 and 6, with the lower-frequency limit f of G.fast signals broadband frequency range2Hz is extremely
The upper frequency limit f of VDSL2 signals broadband frequency range3Any frequency in the locations Hz is node, to ATU-C/G.fast
The mixing for the voice signal and VDSL2 signals that the first separator of local side is transmitted in the G.fast signals and step S100 of transmission is believed
High pass, low-pass filtering are carried out number respectively, to filter out G.fast signals and the mixed signal respectively.I.e. high-pass filtering filters out
f2Hz retains the node to f to the G.fast signals of the node frequency range4The G.fast signals of Hz frequency ranges；Low-pass filtering, which is crossed, filters out height
In the mixed signal of the node frequency range, retain the mixed signal less than the node.
The frequency division multiplexing transmitting device further includes the first separator of the second separator of user terminal and user terminal.
Wherein, the second separator of user terminal includes a high-pass filter and a low-pass filter.
The both ends of high-pass filter in the second separator of user terminal are separately connected the network copper wire and user terminal
G.fast modems are ATU-R/G.fast shown in Fig. 2, with the upper frequency limit f of VDSL2 signals broadband frequency range3Hz is
Node is filtered out more than f3The G.fast signals of Hz, are transmitted to ATU-R/G.fast；
The both ends of low-pass filter in the second separator of user terminal are separately connected the network copper wire and user terminal first
The mixed signal port of separator, with the upper frequency limit f of VDSL2 signals broadband frequency range3Hz is node, is filtered out less than f3Hz's
G.fast signals are transmitted to the mixed signal port of the first separator of user terminal；
The first separator of user terminal, including a high-pass filter and a low-pass filter.
The both ends of high-pass filter in the first separator of user terminal are separately connected in the second separator of the user terminal
Low-pass filter port and the user terminal VDSL2 modems are ATU-R/VDSL2 shown in Fig. 2, wide with voice signal
Upper frequency limit f with frequency range1Hz is node, is filtered out more than f1The VDSL2 signals of Hz, are transmitted to ATU-R/VDSL2；
The both ends of low-pass filter in the first separator of user terminal are separately connected in the second separator of the user terminal
Low-pass filter port and telephone set, with the upper frequency limit f of voice signal broadband frequency range1Hz is node, is filtered out less than f1Hz's
Voice signal is transmitted to telephone set.
In the above-described embodiments, the second separator of the local side is identical with the second cyclone separator arrangement of the user terminal；It is described
The first separator of local side is identical with the first cyclone separator arrangement of the user terminal.Equally it may be implemented in two separators of user terminal
The coupling of signal can also realize the separation of signal in two separators of local side.
It is illustrated in figure 3 the principle schematic of the frequency division multiplexing transmitting device second embodiment, local side includes：
Central Transmission unit, ATU-C/VDSL2 and ATU-C/G.fast shown in Fig. 3 are respectively used to transmission VDSL2 signals
With G.fast signals.
Telephony switching gear is used for transmission voice signal.
The frequency division multiplexing transmitting device includes the second separator of the first separator of local side and local side.
Wherein, the first separator of local side includes a high-pass filter and a low-pass filter.
The both ends of the high-pass filter in the first separator of local side are separately connected ATU-C/G.fast and local side second
High-pass filter port in separator, with the upper frequency limit f of VDSL2 signals broadband frequency range3Hz is node, filters out and is more than
f3The G.fast signals of Hz；
The both ends of the low-pass filter in the first separator of local side are separately connected the ATU-C/VDSL2 and the office
The high-pass filter port in the second separator is held, with the upper frequency limit f of VDSL2 signals broadband frequency range3Hz is node, is filtered out
Less than f3The VDSL2 signals of Hz.
In the high-pass filter and low-pass filter and the second separator of the local side in the first separator of local side
High-pass filter connecting pin is known as mixed signal port, realizes that the G.fast signals that will filter out and VDSL2 signals are coupled,
Form the signal mixed signal of G.fast signals and VDSL2.
The first separator of local side is with the upper frequency limit f of VDSL2 signals broadband frequency range in the present embodiment3Hz is node, real
Border is not limited to this in, referring to figs 5 and 6, with the lower-frequency limit f of G.fast signals broadband frequency range2Hz is to institute
State the upper frequency limit f of VDSL2 signals broadband frequency range3Any frequency in the locations Hz is node, is passed to ATU-C/G.fast
Defeated G.fast signals and the VDSL2 signals of ATU-C/VDSL2 transmission carry out high pass, low-pass filtering respectively, to filter respectively
Go out G.fast signals and VDSL2 signals.I.e. high-pass filtering filters out f2Hz retains the node to the G.fast signals of the node frequency range
To f4The G.fast signals of Hz frequency ranges；Low-pass filtering, which is crossed, filters out the node to f3The VDSL2 signals of Hz frequency ranges retain f1Hz~should
The VDSL2 signals of node.
The second separator of local side, including a high-pass filter and a low-pass filter.
The both ends of the high-pass filter in the second separator of local side are separately connected the mixed of the first separator of the local side
Signal port and network copper wire are closed, with the upper frequency limit f of voice signal broadband frequency range1Hz is node, is filtered out more than f1Hz's
The mixed signal of G.fast signals and VDSL2 signals；The network copper wire is telephone wire, for connecting local side and described hereinafter
User terminal；
The both ends of low-pass filter in the second separator of local side are separately connected the telephony switching gear and the network
Copper wire, with the upper frequency limit f of voice signal broadband frequency range1Hz is node, is filtered out less than f1The voice signal of Hz.
The connecting pin of the high-pass filter in the second separator of local side and the network copper wire and low-pass filter with
The connecting pin of the network copper wire is connected, and realizes the mixed of the voice signal that will filter out and G.fast signals and VDSL2 signals
It closes signal to be coupled, forms the mixed signal of G.fast signals, VDSL2 signals and voice signal.
The frequency division multiplexing transmitting device further includes the first separator of the second separator of user terminal and user terminal.
The second separator of user terminal includes a high-pass filter and a low-pass filter.
The both ends of high-pass filter in the second separator of user terminal are separately connected the network copper wire and user terminal first
The mixed signal port of separator, with the upper frequency limit f of voice signal broadband frequency range1Hz is node, is filtered out more than f1Hz's
The mixed signal of G.fast signals and VDSL2 is transmitted to the mixed signal port of the first separator of user terminal；
The both ends of low-pass filter in the second separator of user terminal are separately connected the mixed of the first separator of the user terminal
Signal port and telephone set are closed, with the upper frequency limit f of voice signal broadband frequency range1Hz is node, is filtered out less than f1The speech of Hz
Signal is transmitted to telephone set；
The first separator of user terminal, including a high-pass filter and a low-pass filter.
The both ends of high-pass filter in the first separator of user terminal are separately connected the height of the second separator of the user terminal
Bandpass filter port and the user terminal G.fast modems are ATU-R/G.fast shown in Fig. 3, with VDSL2 signals
The upper frequency limit f of broadband frequency range3Hz is node, is filtered out more than f3The G.fast signals of Hz, are transmitted to ATU-R/G.fast user
Hold the ports G.fast of modem；
The both ends of low-pass filter in the first separator of user terminal are separately connected the height of the second separator of the user terminal
Bandpass filter port and the user terminal VDSL2 modems are ATU-R/VDSL2 shown in Fig. 3, wide with VDSL2 signals
Upper frequency limit f with frequency range3Hz is node, is filtered out less than f3The VDSL2 signals of Hz, are transmitted to user terminal modem
The ports VDSL2.
High-pass filter and low-pass filter in the first separator of the user terminal are connect with the second separator of user terminal
One end be known as the mixed signal port of the first separator of user terminal.
Similarly, in the above-described embodiments, the second separator of the local side is identical with the second cyclone separator arrangement of the user terminal；
The first separator of the local side is identical with the first cyclone separator arrangement of the user terminal.I.e. two separators of user terminal equally can be with
The coupling for realizing signal, the separation of signal can be also realized in two separators of local side.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of G.fast signals, the frequency division multiplexing transmission method of VDSL2 signals and voice signal in copper wire, feature exist
In, including step
A, G.fast signals, VDSL2 signals and adjacent two signals of voice signal Mid Frequency are chosen and carry out a secondary coupling, form the
One mixed signal and a unselected independent signal；
In one secondary coupling, the signal of the high band in two signal for forming the first mixed signal is subjected to high-pass filtering, separately
One signal carries out low-pass filtering, is then multiplexed into frequency range shared by first mixed signal；
B, by the mixed signal and the independent signal this two signal two secondary couplings of progress, the second mixed signal is formed in copper wire
Middle transmission；
In two secondary coupling, the signal of the high band in two signal for forming the second mixed signal is subjected to high-pass filtering, separately
One signal carries out low-pass filtering, is then multiplexed into frequency range shared by second mixed signal.
2. according to the method described in claim 1, it is characterized in that,
In step A, the two adjacent signals include VDSL2 signals and voice signal；
The high-pass filtering and the low-pass filtering are with the upper frequency limit f of voice signal broadband frequency range1Hz is node, respectively
Filter out the VDSL2 signals and the voice signal；
In step B, the high-pass filtering and the low-pass filtering are with the lower-frequency limit f of G.fast signals broadband frequency range2Hz is extremely
The upper frequency limit f of VDSL2 signals broadband frequency range3Any frequency in the locations Hz is node, and high-pass filtering filters out f2Hz
To the G.fast signals of the node frequency range, retain the node to f4The G.fast signals of Hz frequency ranges；
Low-pass filtering crosses the mixed signal filtered out higher than the node frequency range, retains the mixing less than the node and believes
Number；
Wherein, f1Hz < f2Hz < f3Hz < f4Hz。
3. according to the method described in claim 2, it is characterized in that,
In step B, the high-pass filtering and the low-pass filtering are with the upper frequency limit f of VDSL2 signals broadband frequency range3Hz is
Node, high-pass filtering filter out f2Hz to f3The G.fast signals of Hz frequency ranges retain f3Hz to f4The G.fast signals of Hz frequency ranges；
Low-pass filtering, which retains, is less than f3The mixed signal of Hz frequency ranges.
4. according to the method described in claim 1, it is characterized in that,
In step A, the two adjacent signals include G.fast signals and VDSL2 signals；
The high-pass filtering and the low-pass filtering are with the lower-frequency limit f of G.fast signals broadband frequency range2Hz is to described
The upper frequency limit f of VDSL2 signals broadband frequency range3Any frequency in the locations Hz is node, and high-pass filtering filters out f2Hz extremely should
The G.fast signals of node frequency range retain the node to f4The G.fast signals of Hz frequency ranges；
Low-pass filtering, which is crossed, filters out the node to f3The VDSL2 signals of Hz frequency ranges retain f1The VDSL2 signals of the Hz~node；
In step B, the high-pass filtering and the low-pass filtering are with the upper frequency limit f of voice signal broadband frequency range1Hz is section
Point filters out the mixed signal and the voice signal respectively；
Wherein, f1Hz < f2Hz < f3Hz < f4Hz。
5. according to the method described in claim 4, it is characterized in that, in step A, the high-pass filtering and the low-pass filtering with
The upper frequency limit f of VDSL2 signals broadband frequency range3Hz is node, and high-pass filtering filters out f2Hz to f3The G.fast of Hz frequency ranges believes
Number, retain f3Hz to f4The G.fast signals of Hz frequency ranges；
Low-pass filtering retains f1Hz to f3The VDSL2 signals of Hz frequency ranges.
6. a kind of frequency division multiplexing transmitting device of G.fast signals, VDSL2 signals and voice signal in copper wire, feature exist
In, include the first separator and the second separator of interconnection,
First separator is used for selected G.fast signals, VDSL2 signals and adjacent two signals of voice signal Mid Frequency
A secondary coupling is carried out, the first mixed signal and a unselected independent signal are formed；
One secondary coupling includes that the signal of the high band in two signal for will be formed the first mixed signal carries out high-pass filtering,
Another signal carries out low-pass filtering, is then multiplexed into frequency range shared by first mixed signal；
Second separator is connect with first separator, by the mixed signal and this two signal of independent signal progress two
Secondary coupling forms the second mixed signal and is transmitted in copper wire；
Two secondary coupling includes that the signal of the high band in two signal for will be formed the second mixed signal carries out high-pass filtering,
Another signal carries out low-pass filtering, is then multiplexed into frequency range shared by second mixed signal.
7. device according to claim 6, which is characterized in that
First separator includes high-pass filter and low-pass filter；
The equipment that high-pass filter one end of first separator is connected to transmission VDSL2 signals, first separator
The equipment that low-pass filter one end is connected to transmission voice signal；The other end of the high-pass filter of first separator and institute
The other end for stating low-pass filter is connected to a mixed signal port；
The high-pass filter and low-pass filter of first separator are with the upper frequency limit f of voice signal broadband frequency range1Hz
For node, the VDSL2 signals and the voice signal are filtered out respectively；
Second separator includes high-pass filter and low-pass filter；
The equipment that high-pass filter one end of second separator is connected to transmission G.fast signals, the other end are connected to copper
Line；
Low-pass filter one end of second separator is connected to the mixed signal port, and the other end is connected to the copper
Line；
The high-pass filter and low-pass filter of second separator are with the lower-frequency limit of G.fast signals broadband frequency range
f2Hz to VDSL2 signals broadband frequency range upper frequency limit f3Any frequency in the locations Hz is node, high-pass filtering filter
Except f2Hz retains the node to f to the G.fast signals of the node frequency range4The G.fast signals of Hz frequency ranges；
Low-pass filtering crosses the mixed signal filtered out higher than the node frequency range, retains the mixing less than the node
Signal；
Wherein, f1Hz < f2Hz < f3Hz < f4Hz。
8. device according to claim 7, which is characterized in that
The high-pass filter and low-pass filter of second separator are with the upper frequency limit of VDSL2 signals broadband frequency range
f3Hz is node, and high-pass filter filters out f2Hz to f3The G.fast signals of Hz frequency ranges retain f3Hz to f4The G.fast of Hz frequency ranges
Signal；
Low-pass filter, which retains, is less than f3The mixed signal of Hz frequency ranges.
9. device according to claim 6, which is characterized in that the first separator including interconnection and the second separation
Device,
First separator includes high-pass filter and low-pass filter；
The equipment that high-pass filter one end of first separator is connected to transmission G.fast signals, first separator
The equipment that low-pass filter one end is connected to transmission VDSL2 signals；
It is mixed that the other end of the high-pass filter of first separator and the other end of the low-pass filter are connected to one
Close signal port；
The high-pass filter and low-pass filter of first separator are with the lower-frequency limit of G.fast signals broadband frequency range
f2Hz to VDSL2 signals broadband frequency range upper frequency limit f3Any frequency in the locations Hz is node, high-pass filter
Filter out f2Hz retains the node to f to the G.fast signals of the node frequency range4The G.fast signals of Hz frequency ranges；
Low-pass filter, which is crossed, filters out the node to f3The VDSL2 signals of Hz frequency ranges retain f1The VDSL2 of the Hz~node believes
Number；
Second separator includes high-pass filter and low-pass filter；
High-pass filter one end of second separator is connected to the mixed signal port, and the other end is connected to the copper
Line；
The equipment that low-pass filter one end of second separator is connected to transmission voice signal, the other end are connected to the copper
Line；
The high-pass filter and low-pass filtering of second separator are with the upper frequency limit f of voice signal broadband frequency range1Hz is
Node filters out the mixed signal and the voice signal respectively.
10. device according to claim 9, which is characterized in that
The high-pass filter and low-pass filter of first separator are with the upper frequency limit of VDSL2 signals broadband frequency range
f3Hz is node, and high-pass filter filters out f2Hz to f3The G.fast signals of Hz frequency ranges retain f3Hz to f4The G.fast of Hz frequency ranges
Signal；
Low-pass filter retains f1Hz to f3The VDSL2 signals of Hz frequency ranges.
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| CN201810786144.2A CN108768571B (en) | 2018-07-17 | 2018-07-17 | Method and device for frequency division multiplexing transmission of G.fast signal, VDSL2 signal and voice signal in copper wire |
| PCT/CN2018/107991 WO2020015181A1 (en) | 2018-07-17 | 2018-09-27 | Frequency division multiplexing transmission method and device for g. fast signal, vdsl2 signal, and voice signal in copper wire |
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| US6813343B1 (en) * | 1999-05-12 | 2004-11-02 | Orckitt Communications Ltd. | Method and apparatus for filtering asymmetric digital subscriber line (ADSL) signals |
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