CN207732780U - A kind of multiuser residential unit access device based on G_hn networks - Google Patents
A kind of multiuser residential unit access device based on G_hn networks Download PDFInfo
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- CN207732780U CN207732780U CN201721600075.9U CN201721600075U CN207732780U CN 207732780 U CN207732780 U CN 207732780U CN 201721600075 U CN201721600075 U CN 201721600075U CN 207732780 U CN207732780 U CN 207732780U
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Abstract
The utility model discloses a kind of multiuser residential unit access devices based on G_hn networks, including：Switching Module is connected and communicated with upstream switches or router；At least one G_hn modules, connect with Switching Module respectively, for carrying out the conversion between Ethernet protocol and G_hn agreements；CATV modules, the processing of optical signal/radiofrequency signal for completing input；Duplexer filter is connect with CATV modules with G_hn modules respectively, and for the radiofrequency signal to G_hn modules, the signal of CATV modules is divided into line frequency.Equipment utilization G_hn technologies realize broadband user's access of fast and low-cost on existing coaxial network of registering one's residence.
Description
Technical field
The utility model is related to broadband access technology field, more particularly to it is a kind of based on G_hn (or G_hn, ITU-T
G serial protocols) network multiuser residential unit access device.
Background technology
Broadband is for opposite conventional dial is surfed the Internet, although should reach more currently without the bandwidth in unified standard regulation broadband
It is few, but consider that the message transmission rate of network should at least reach 256Kbps according to masses' custom and network multimedia data stream amount
It could be referred to as broadband.ADSL (Asymmetrical Digital Subscriber Loop, ADSL)
The technology of broadband access network is most suitable in the transmission technology for being " last one kilometer " between Internet service provider and end user,
It is connect because the asymmetric property of ADSL uplink and downlink rates, the rate that can be provided and transmission range especially meet internet at this stage
The requirement entered, and tie-in line can be shared with plain old telephone.
However, ADSL transmission rates are not high, can not be equal to high-speed access technologies such as intelligent acess.And if using optical fiber
" last one kilometer " between access Internet service provider and end user is not only of high cost it is necessary to be laid with optical fiber, and when consuming
Between it is long, cause many users be not intended to be laid with fiber entering household.
Utility model content
In order to solve technical problem present in background technology, the utility model proposes a kind of based on the more of G_hn networks
User's flat access device, to solve the problems, such as that high-speed wideband accesses using existing coaxial network.
The utility model proposes a kind of multiuser residential unit access device based on G_hn networks, including：
Switching Module is connected and communicated with upstream switches or router；
At least one G_hn modules, connect with Switching Module respectively, for carrying out between Ethernet protocol and G_hn agreements
Conversion；
CATV modules, the processing of optical signal/radiofrequency signal for completing input；
Duplexer filter is connect with CATV modules with G_hn modules respectively, for the radiofrequency signal to G_hn modules, CATV
The signal of module is divided into line frequency；
Wherein, G_hn modules specifically include：
G_hn DBB modules, connect with Switching Module, realize coaxial bandwidth modulation；
G_hn AFE modules are connect with G_hn DBB modules, the signal for sending G_hn DBB modules is amplified,
Filtering, and drive signals on coaxial line.
Preferably, G_hn DBB modules specifically include：
SGMII modules, connect with Switching Module, and data exchange is carried out as service channel and Switching Module；
ETH MAC modules are connect with SGMII modules, for business datum to be packaged；
G_hn Engine modules, connect with ETH MAC modules, for Ethernet protocol to be converted into G_ in down direction
Hn agreements, in up direction by G_hn protocol conversions at Ethernet protocol；
DAC＆ADC modules are connect with G_hn Engine modules, for converting digital signals into simulation in down direction
Signal gives G_hn AFE modules, and the analog signal that G_hn AFE modules are sent is converted into digital signal hair in up direction
Give G_hn Engine modules；
CPU module is connect with G_hn Engine modules, is connected and communicated by spi bus and G_hn AFE modules；
Memory module is connect with G_hn Engine modules.
Preferably, G_hn DBB modules specifically include：
SPI1 modules are connected and communicated with G_hn AFE modules；
LD modules connect G_hn DBB modules, and the signal that G_hn DBB modules are sent is put into and is transmitted to appropriate level greatly
To user side equipment；
Low-noise amplifier receives user side signal；
Filter connect with low-noise amplifier 226, is amplified to low noise amplifier output signal；
ADC drives, and is connect with filter, gives user side signal transmission to G_hn DBB modules.
Preferably, CATV modules specifically include：
Photoelectric conversion module is converted into radiofrequency signal for optical signal；
Slope modules, connect with photoelectric conversion module, for rectification building-out radiofrequency signal due to frequency range in transmission process
Attenuation caused by difference；
Attenuation module is connect with Slope modules, for decaying to radiofrequency signal；
Radio frequency amplifier is connect with attenuation module, for being amplified to radiofrequency signal；
Splitter is connect with radio frequency amplifier, is used for outputting multiplex signals.
Preferably, CATV modules further include：
Select switch is connected between photoelectric conversion module and Slope modules, for determining optical signal input radio frequency signal
Input.
In the utility model, G_hn technologies are made full use of, it, can be with fast and low-cost broadband number in existing coaxial network of registering one's residence
According to access, the broadband user of the fiber entering household rate that can match in excellence or beauty accesses, can be used for P2P (Point to Point, point-to-point) and
Two kinds of scenes of P2MP (Point to Multiple Point, point-to-multipoint).Actual transfer rate and biography under P2P application scenarios
Defeated distance is better than the existing G.fast/VDSL equipment based on telephone wire, and data rate is better than existing EOC under P2MP application scenarios
Equipment；In addition, under P2P scenes can by coaxially by multiuser residential unit give ustomer premises access equipment power, to user with
To facilitate to the greatest extent.
Description of the drawings
Fig. 1 is a kind of multiuser residential unit access device based on G_hn networks that the utility model embodiment 1 proposes
Structure chart；
Fig. 2 is G_hn DBB function structure charts in the utility model embodiment；
Fig. 3 is G_hn AFE function structure charts in the utility model embodiment；
Fig. 4 is CATV function structure charts in the utility model embodiment；
Fig. 5 is the utility model embodiment P2P application scenarios schematic diagrams；
Fig. 6 is the utility model embodiment P2MP application scenarios schematic diagrams.
Specific implementation mode
The utility model embodiment 1 proposes a kind of multiuser residential unit access device based on G_hn networks, such as Fig. 1
It is shown, including：
Switching Module 10, connects and communicates with upstream switches or router, and is upstream 10G service ports and G_hn
Data packet storage forwarding is provided between the ports DBB.Wherein, it can be optical signal from upstream received signal, need to carry out photoelectricity
Conversion, converts optical signals to electric signal；Or receive electric signal from upstream equipment.
At least one G_hn modules 20, connect with Switching Module 10 respectively, for carrying out Ethernet protocol and G_hn agreements
Between conversion, upstream Ethernet data is converted to and is suitble to DSL (the Digital Subscriber that transmit on the same axis
Line, digital subscriber line) signal.G_hn modules 20 support ITU about G_hn specification G.9960, G.9961, G.9962 and
G.9963 etc..G_hn modules specifically include G_hn DBB (Digital Base Band, digital baseband) modules 21 and G_hn
AFE (Analog Front End, AFE(analog front end)) module 22.
Wherein, G_hn DBB modules 21 realize that G.9961 the G_hn PHY functions of G.9960 and G.9961 proposing, realization carry
The DLL level hardware capability gone out realizes coaxial line 200MHz bandwidth modulations.21 structure of G_hn DBB modules is as shown in Fig. 2, include：
Power module 211, memory module 217, SGMII modules 212, ETH MAC modules 213, G_hn Engine modules 214, DAC＆
ADC module 215 and CPU module 216.Power module 211, internal for introducing external power supply, supply modules use；
SGMII modules 212 are connect with Switching Module 10, and data exchange is carried out as service channel and Switching Module 10；ETH MAC moulds
Block 213 is connect with SGMII modules 212, for business datum to be packaged；G_hn Engine modules 214, with ETH MAC
Module 213 connects, and for Ethernet protocol to be converted into G_hn agreements in down direction, turns G_hn agreements in up direction
Change Ethernet protocol into；DAC＆ADC modules 215 are connect with G_hn Engine modules 214, for believing number in down direction
Number being converted into analog signal gives G_hn AFE modules 22, believes in the simulation that up direction sends G_hn AFE modules 22
Number being converted into digital signal is sent to G_hn Engine modules 214, provides 2 ALT-CH alternate channels；CPU module 216, with G_hn
Engine modules 214 connect, for realizing MAC (Media Access Control, medium access control) layers and DLL
The software function of (Logical Link Control, logic link control) layer and G.9962 defined management function, provide
UART (Universal Asynchronous Receiver/Transmitter, universal asynchronous receiving-transmitting transmitter) function is used for
Software debugging passes through SPI (Serial Peripheral Interface, Serial Peripheral Interface (SPI)) bus, SPI1 and G_hn AFE
Module 22 connects and communicates, and is connected and communicated by SPI2 and FLASH.Memory module 217, with G_hn Engine modules 214
It connects, the operational data for storing G_hn Engine, and the data exchanged with external memory.
G_hn AFE modules 22 are connect with G_hn DBB modules 21, the signal for sending G_hn DBB modules 21 into
Row amplification, filtering, and drive signals on coaxial line.G_hn AFE modular structures are as shown in figure 3, include：Power module
221, SPI1 modules 222, LD (Line Driver, line driver) module 223, ADC drive modules 224, filter module 225
With low-noise amplifier 226.Wherein, power module 221 are used for external power supply to be distributed to internal modules；SPI1
Module 222 connects and communicates with G_hn AFE modules 22, realizes the configuration of interior decay；LD modules 223, left side connection
G_hn DBB modules 21, right side connect user side device, and the signal that G_hn DBB modules 21 are sent is put into and arrives appropriate level greatly
It is transferred to user side equipment；Low-noise amplifier 226 receives user side signal；Filter 225, with low-noise amplifier 226
Connection, is amplified 226 output signal of low-noise amplifier；ADC drivings 224, connect with filter 225, user side are believed
Number it is transferred to G_hn DBB modules 21.
CATV modules 30, the processing of optical signal/radiofrequency signal for completing input.According to the difference of usage scenario,
The input of CATV modules can be optical signal (CATV Rx Fiber), can also be radiofrequency signal (CATV Rx Coax), lead to
It crosses select switch 36 and determines input signal.CATV modular structures are as shown in figure 4, include：Photoelectric conversion module 31 is used for optical signal
It is converted into radiofrequency signal；Slope modules 32 are connect with photoelectric conversion module 31, are being transmitted across for rectification building-out radiofrequency signal
The attenuation caused by frequency range difference in journey；Attenuation module 33 is connect with Slope modules 32, for being carried out to radiofrequency signal
Decaying；Radio frequency amplifier 34 is connect with attenuation module 33, for being amplified to radiofrequency signal；Splitter 35 amplifies with radio frequency
Device 34 connects, and is used for outputting multiplex signals.
Duplexer filter 40 is connect with CATV modules 30 with G_hn modules 20 respectively, for what is supported G_hn modules 20
RF signal bands are 5~200MHz, and the signal for the 258MHz or more that CATV modules 30 use is divided into line frequency, in order to ensure number
According to transmission.The passive duplexer filter DPX 204/258 with low pass and high-pass filter may be used in duplexer filter 40.
Power module can support a variety of power supply modes under P2P application scenarios, including：220V powers, suitable for taking
The convenient occasion of electricity, such as the communication equipment box in roadside, the suitable building etc. for directly taking electricity；- 48V powers, and is suitable for Telecommunicator
Room etc. can provide -48V the occasions of power supply；RPF reverse power supply, suitable for taking electric inconvenient but terminal user apart from access device
Distance closer occasion, can directly from terminal user by telephone wire reverse feeding to MDU；220V/- is used in access device
It, can be by access device by coaxially giving terminal CPE power supplies, to facilitate user to be inserted from preparing power supply under 48V electric power thus supplieds
The puzzlement of seat and power cord.
Under P2MP application scenarios, following power supply mode is supported：220V powers, suitable for taking the convenient occasion of electricity, such as
The communication equipment box in roadside is suitble to directly take the building etc. of electricity；- 48V powers, and can provide -48V suitable for telecommunications room etc. supplies
The occasion of electricity.
P2P application scenarios can use the utility model to realize that point arrives the P2P schemes of application on coax
The broadband access of point Gbps, as shown in Figure 5.P2MP application scenarios can make the P2MP schemes of application on coax
It is realized with ONU/Switch+G_hn, as shown in Figure 6.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
Be confined to this, any one skilled in the art within the technical scope disclosed by the utility model, according to this practicality
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (5)
1. a kind of multiuser residential unit access device based on G_hn networks, which is characterized in that including：
Switching Module (10), connects and communicates with upstream switches or router；
At least one G_hn modules (20), connect respectively with Switching Module (10), for carrying out Ethernet protocol and G_hn agreements
Between conversion；
CATV modules (30), the processing of optical signal/radiofrequency signal for completing input；
Duplexer filter (40) is connect with CATV modules (30) with G_hn modules (20) respectively, for G_hn modules (20)
The signal of radiofrequency signal, CATV modules (30) is divided into line frequency；
Wherein, G_hn modules (20) specifically include：
G_hn DBB modules (21) connect with Switching Module (10), realize coaxial bandwidth modulation；
G_hn AFE modules (22) are connect with G_hn DBB modules (21), the signal for sending G_hn DBB modules (21)
It is amplified, filters, and drive signals on coaxial line.
2. the multiuser residential unit access device according to claim 1 based on G_hn networks, which is characterized in that G_hn
DBB modules (21) specifically include：
SGMII modules (212) are connect with Switching Module (10), and data exchange is carried out as service channel and Switching Module (10)；
ETH MAC modules (213) are connect with SGMII modules (212), for business datum to be packaged；
G_hn Engine modules (214) are connect with ETH MAC modules (213), for turning Ethernet protocol in down direction
G_hn agreements are changed into, in up direction by G_hn protocol conversions at Ethernet protocol；
DAC＆ADC modules (215) are connect with G_hn Engine modules (214), for converting digital signal in down direction
G_hn AFE modules (22) are given at analog signal, are turned in the analog signal that up direction sends G_hnAFE modules (22)
It changes digital signal into and is sent to G_hn Engine modules (214)；
CPU module (216) is connect with G_hn Engine modules (214), is connect with G_hnAFE modules (22) by spi bus
And it communicates；
Memory module (217) is connect with G_hn Engine modules (214).
3. the multiuser residential unit access device according to claim 1 based on G_hn networks, which is characterized in that G_hn
DBB modules (21) specifically include：
SPI1 modules (222) are connected and communicated with G_hn AFE modules (22)；
The signal that G_hn DBB modules (21) are sent is put into big to suitable by LD modules (223), connection G_hn DBB modules (21)
Level is transferred to user side equipment；
Low-noise amplifier (226) receives user side signal；
Filter (225), connect with low-noise amplifier 226, is amplified to low-noise amplifier (226) output signal；
ADC drives (224), is connect with filter (225), by user side signal transmission to G_hn DBB modules (21).
4. the multiuser residential unit access device according to claim 1 based on G_hn networks, which is characterized in that CATV
Module (30) specifically includes：
Photoelectric conversion module (31), radiofrequency signal is converted into for optical signal；
Slope modules (32) are connect with photoelectric conversion module (31), for rectification building-out radiofrequency signal in transmission process due to
Attenuation caused by frequency range difference；
Attenuation module (33) is connect with Slope modules (32), for decaying to radiofrequency signal；
Radio frequency amplifier (34) is connect with attenuation module (33), for being amplified to radiofrequency signal；
Splitter (35) is connect with radio frequency amplifier (34), is used for outputting multiplex signals.
5. the multiuser residential unit access device according to claim 4 based on G_hn networks, which is characterized in that CATV
Module (30) further includes：
Select switch (36) is connected between photoelectric conversion module (31) and Slope modules (32), for determining that optical signal inputs
Radiofrequency signal inputs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721600075.9U CN207732780U (en) | 2017-11-24 | 2017-11-24 | A kind of multiuser residential unit access device based on G_hn networks |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721600075.9U CN207732780U (en) | 2017-11-24 | 2017-11-24 | A kind of multiuser residential unit access device based on G_hn networks |
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| CN207732780U true CN207732780U (en) | 2018-08-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3787246A1 (en) * | 2019-08-28 | 2021-03-03 | British Telecommunications public limited company | Local area network |
-
2017
- 2017-11-24 CN CN201721600075.9U patent/CN207732780U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3787246A1 (en) * | 2019-08-28 | 2021-03-03 | British Telecommunications public limited company | Local area network |
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