CN201018491Y - Connecting structure for providing high speed broadband business in coaxial cable - Google Patents
Connecting structure for providing high speed broadband business in coaxial cable Download PDFInfo
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- CN201018491Y CN201018491Y CNU2006200432792U CN200620043279U CN201018491Y CN 201018491 Y CN201018491 Y CN 201018491Y CN U2006200432792 U CNU2006200432792 U CN U2006200432792U CN 200620043279 U CN200620043279 U CN 200620043279U CN 201018491 Y CN201018491 Y CN 201018491Y
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- coaxial cable
- cable
- cable bridge
- network
- high speed
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Abstract
A connecting structure provides high-speed broadband services on a coaxial cable. A passive optical network OPN is connected between a local end and a community. Existing coaxial cables in the community are connected with all households. A LinkONU exchanger is provided as a bridging equipment to connect with the PON and a coaxial cable network and composed of an assembly of an ONU and a cable bridge switch. Wherein, the PON outputs N FE interfaces through an exchange chip downwards linked with the ONU. N FE interfaces of the exchange chip accesses to the coaxial cable network through the cable bridge switch. In addition, the cable bridge switch modulates N FE data onto channels with a quantity of N of the coaxial cable. A band-pass filter is positioned in front of a user cable bridge modem and filters an N-1 band of electromagnetic waves. Therefore, the cable bridge modem is transmitted in through a band of electromagnetic waves applied by the user, thus reducing interference and noise and ensuring network signal transmission quantity. A plurality of 50M data channels exist in a spectrum domain of 800M to 2G of a coaxial cable to minimize mutual interference and provide NX270M access bandwidth for users.
Description
Technical field
The utility model relates to the network transmission technology field, relate in particular to the technical field of access band business of networking on existing coaxial cable, the technology of carrying out channel multiplexing on the particularly a kind of Cable of utilization Bridge is implemented in the syndeton that high speed broadband service is provided on the coaxial cable.
Background technology
Existing broadband access technology based on coaxial cable mainly is coaxial cable modulation (Cable Modem) technology, and the frequency range that takies 5～65M is carried out uplink, and this transmission method can only provide the shared bandwidth of 6～8M.Cable Bridge (cable bridge) is a kind of new network equipment that the home network interconnect function is provided.It uses the above frequency of 860M, allows the user to set up the home network of bandwidth up to 270M on family's existing wired camera cable.Simultaneously, the user needn't worry to destroy or disturb original cable TV signal again.Cable Bridge can provide high speed broadband service as a kind of novel coaxial cable high speed transmission technology on coaxial cable.But present Cable Bridge technology only is applicable to home network environment, and is not suitable for Access Network.
The utility model content
Technical problem to be solved in the utility model is the transmission technology that is to utilize cable bridge (Cable Bridge), in building and PON combine, provide a kind of high energy to reach the syndeton that high speed broadband service is provided of 1G speed on coaxial cable.
Technical problem to be solved in the utility model can adopt following technical scheme to realize:
A kind of syndeton that high speed broadband service is provided on coaxial cable, its local side adopts passive optical-fiber network (PON) to be connected with the minizone, carry out connection between each resident family with existing coaxial cable in the sub-district, with the bridging device of LinkONU switch as connection passive optical-fiber network and coaxial cable network, it is characterized in that described LinkONU switch comprises the combination of an optical network unit (ONU) and cable bridge switch (Cable Bridge Switch); The exchange chip that passive optical-fiber network is hung down by optical network unit is exported Fast Ethernet mouth (the FE mouth: fast Ethernet) of N individual 100,000,000, the N of exchange chip Fast Ethernet mouth inserts the coaxial cable network by the cable bridge switch respectively, and the cable bridge switch gets on the data of N Fast Ethernet mouth by N the passage that is modulated to coaxial cable; At preceding increase by one band pass filter of service cable bridge modulator-demodulator (Cable Bridge Modem).This band-pass filter is fallen the electromagnetic wave of N-1 frequency range, and only the frequency range electromagnetic wave that uses by this user is sent into the cable bridge modulator-demodulator.
Wherein, described cable bridge switch is the bridging device that connects Ethernet and coaxial cable network, and it is that a plurality of cable bridge modulator-demodulators are accomplished the cable bridge modem bank on the same integrated circuit board.
Wherein, described cable bridge modulator-demodulator is the bridging device of a cable bridge passage (Cable Bridge Channel) and an Ethernet interface.
The utility model is by this syndeton, the electromagnetic wave of the band pass filter of a user side employed Channel of this cable bridge of gating modulator-demodulator, the electromagnetic wave of other frequency ranges of filtering disturbs and noise thereby reduce, and guarantees the transmission quality of cable bridge (Cable Bridge) network signal.The data channel of a plurality of 50M of coexistence in the spectrum domain of the 800M～2G that makes at a coaxial cable, and it is interfered with each other drop to minimum, thereby the access bandwidth of user NX270M offered.Provide 8 Channel as the highest.
Description of drawings
Further specify the utility model below in conjunction with the drawings and the specific embodiments.
Fig. 1 provides the PON network structure that syndeton adopted of high speed broadband service on coaxial cable for the utility model.
Fig. 2 is the utility model provides high speed broadband service on coaxial cable the LinkONU Switch structure function figure that syndeton adopted.
Fig. 3 is the utility model provides high speed broadband service on coaxial cable the C.link home access gateway schematic diagram that syndeton adopted.
Fig. 4 is the utility model provides the band pass filter that the syndeton of high speed broadband service uses on coaxial cable an operation principle schematic diagram.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, further set forth the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model provides the syndeton of high speed broadband service on coaxial cable, adopt passive optical-fiber network (PON) technology at local side and minizone, thereby avoided the interference of external equipment, reduced the fault of circuit and external equipment, improve system reliability, saved maintenance cost simultaneously.Simultaneously, the LinkONU switch is as the bridging device that connects passive optical-fiber network (PON) and coaxial cable network.
As shown in Figure 2, the LinkONU switch device mainly is made up of ONU chip PAS6201 (EPON optical network unit chip) and exchange chip.Because optical network unit (ONU) is directly exported a gigabit Ethernet mouth (GE mouth), and Cable Bridge network is the Fast Ethernet interface, therefore need finish the conversion of signal by exchange chip, export N FE (100,000,000 Ethernet interface).
Described PON network all adopts optical fiber to carry out the signal transmission.
As shown in Figure 3, between Cable Bridge network and the Ethernet, Cable Bridge Switch is as bridging device, and N the Channel that the signal of all FE mouths is modulated to coaxial cable gets on.A Cable Bridge Channel and an Ethernet interface by a Cable Bridge Modem as bridging device.A plurality of like this Cable Bridge Modem can accomplish to be positioned at the Cable Bridge Modem pond on the same integrated circuit board
Described Cable Bridge network all adopts coaxial wire to carry out the signal transmission.
As shown in Figure 3, the frequency that " Cable Bridge " technology is used is 800M ~ 2G, wherein is divided into a plurality of modulation frequency ranges, and each frequency range is used the frequency range of 50MHz, the maximum in theory data transmission bauds that can obtain 270Mbps.This method of attachment shown in figure one need add a band pass filter before user side Cable Bridge Modem, carry out frequency and filter.
Filter is the circuit exclusive disjunction treatment system with frequency selection.By the signal form difference of handling, filter can be divided into analog filter and digital filter two classes; By the function filter can be divided into low pass, high pass, band logical with band resistance four classes.Referring to Fig. 4, the operation principle of band pass filter is: each band-pass filter is fallen the electromagnetic wave of other inconsistent frequency of the frequency set with this band pass filter, fall the electromagnetic wave of other frequency as first user's band-pass filter, only pass through the electromagnetic wave of 1 frequency range, and filter out the electromagnetic wave of other frequency range.
Before the Cable of user's receiving terminal Bridge Modem, add a band pass filter, the electromagnetic wave of this band pass filter employed Channel of this CableBridge of gating Modem, the electromagnetic wave of other frequency ranges of filtering, disturb and noise thereby reduce, guarantee the transmission quality of Cable Bridge network signal.
As shown in Figure 3, by this syndeton, in the above-mentioned frequency domain of a coaxial cable, filter if adopt band pass filter to carry out frequency, a plurality of frequency ranges that just can in a coaxial cable, coexist, as reach as high as 8 frequency ranges, thereby make in the spectrum domain of a coaxial cable data channel of a plurality of 50M of coexistence, and the equipment on the different frequency range of will being operated in interferes with each other and drops to minimum, thereby offers the access bandwidth of user N * 270M, as the access bandwidth of eight 270M.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. syndeton that high speed broadband service is provided on coaxial cable, its local side adopts passive optical-fiber network to be connected with the minizone, carry out connection between each resident family with existing coaxial cable in the sub-district, with the bridging device of LinkONU switch as connection passive optical-fiber network and coaxial cable network, it is characterized in that described LinkONU switch comprises the combination of an optical network unit and cable bridge switch; The exchange chip that passive optical-fiber network is hung down by optical network unit is exported the Fast Ethernet mouth of N individual 100,000,000, the N of exchange chip Fast Ethernet mouth inserts the coaxial cable network by the cable bridge switch respectively, and the cable bridge switch gets on the data of N Fast Ethernet mouth by N the passage that is modulated to coaxial cable; Increase by a band pass filter before service cable bridge modulator-demodulator, this band-pass filter is fallen the electromagnetic wave of N-1 frequency range, and only the frequency range electromagnetic wave that uses by this user is sent into the cable bridge modulator-demodulator.
2. a kind of syndeton that high speed broadband service is provided on coaxial cable according to claim 1, it is characterized in that, described cable bridge switch is the bridging device that connects Ethernet and coaxial cable network, and it is that a plurality of cable bridge modulator-demodulators are accomplished the cable bridge modem bank on the same integrated circuit board.
3. a kind of syndeton that high speed broadband service is provided on coaxial cable according to claim 1 is characterized in that, described cable bridge modulator-demodulator is the bridging device of a cable bridge passage and an Ethernet interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200432792U CN201018491Y (en) | 2006-06-27 | 2006-06-27 | Connecting structure for providing high speed broadband business in coaxial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200432792U CN201018491Y (en) | 2006-06-27 | 2006-06-27 | Connecting structure for providing high speed broadband business in coaxial cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201018491Y true CN201018491Y (en) | 2008-02-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200432792U Expired - Lifetime CN201018491Y (en) | 2006-06-27 | 2006-06-27 | Connecting structure for providing high speed broadband business in coaxial cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201018491Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101098165B (en) * | 2006-06-27 | 2010-12-22 | 上海未来宽带技术及应用工程研究中心有限公司 | Method for providing high speed broadband service on coaxial cable |
| CN101651771B (en) * | 2008-08-12 | 2012-04-18 | 永硕联合国际股份有限公司 | Electronic device supporting Multimedia over Coax Alliance standards |
-
2006
- 2006-06-27 CN CNU2006200432792U patent/CN201018491Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101098165B (en) * | 2006-06-27 | 2010-12-22 | 上海未来宽带技术及应用工程研究中心有限公司 | Method for providing high speed broadband service on coaxial cable |
| CN101651771B (en) * | 2008-08-12 | 2012-04-18 | 永硕联合国际股份有限公司 | Electronic device supporting Multimedia over Coax Alliance standards |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20080206 Effective date of abandoning: 20101222 |