CN203775212U - Optical radio frequency access equipment suitable for coaxial access to desk in Fiber to The Home (FTTH) - Google Patents
Optical radio frequency access equipment suitable for coaxial access to desk in Fiber to The Home (FTTH) Download PDFInfo
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- CN203775212U CN203775212U CN201320876999.7U CN201320876999U CN203775212U CN 203775212 U CN203775212 U CN 203775212U CN 201320876999 U CN201320876999 U CN 201320876999U CN 203775212 U CN203775212 U CN 203775212U
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- radio frequency
- signal
- home
- access control
- medium access
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Abstract
The utility model discloses optical radio frequency access equipment suitable for coaxial access to the desk in Fiber to The Home (FTTH). The optical radio frequency access equipment includes an optical network unit, a switch, a plurality of medium access control chip, a complicated programmable logic device, a plurality of physical layer chips and a plurality of duplexer filters, a signal input end of the optical network unit is connected with an optical interface, a signal output end is connected with the switch, the switch is connected with the plurality of medium access control chips, the plurality of medium access control chips are connected with an input end of the complicated programmable logic device, and an output end of the complicated programmable logic device is connected with the plurality of physical layer chips. The optical radio frequency access equipment in the utility model is simple in structure and strong in applicability, can effectively utilize existing coaxial cable resources, does not need to damage original wiring of a user in installation, and reduces installation costs.
Description
Technical field
The utility model relates to a kind of coaxial light radio frequency access device to desktop during Fiber to the home that is applicable to, and belongs to broadband coaxial technical field of access networks.
Background technology
Fiber to the home, and (FTTH) is a kind of transmission method of optical-fibre communications, be directly optical fiber receive user family in (place that user is required).Particularly, Fiber to the home (FTTH) refers to optical network unit (ONU) is arranged on to household user or enterprise customer place, be in light access series except fiber to the desk (FTTD) the most close user's optical access network application type.The remarkable technical characterstic that Fiber to the home (FTTH) is the bandwidth that not only provides larger, and has strengthened the transparency of network to data format, speed, wavelength and agreement, has relaxed requirements such as environmental condition and power supplies, has simplified and has safeguarded and install.But optical fiber main line has arrived given place in user family, can not arrive each room of user family, if other rooms need the Two-way of wiring logging-on function and cable TV, need extra bracing wire, this seriously damages layout of houses.Nowadays, the wiring in most houses is all interior lines, and a kind of equipment can connect coaxial line transmission Ethernet and cable TV signal, and realizing each room can wiring logging-on function and cable TV Two-way.
What the FTTH of telecommunications adopted is data platform, adopts multicast mode, and a PON mouth is 1.25Gbps, and generally Fiber to the home is a PON Kou Dai 64 road ONU, almost can not transmit a set of high-definition television program; And the FTTH of CATVA adopts, be that two platforms are RF broadcast platform and data platform, the bandwidth of 1.3GHz, and the actual 6Gbps code stream that can transmit, can transmit hundreds of cover high-definition television program.
Existing HomePlug AV, MOCA technology etc. have all realized coaxial to each room desktop of user, but these equipment costs are higher.
Utility model content
The purpose of this utility model is to provide a kind of coaxial light radio frequency access device to desktop during Fiber to the home that is applicable to, this device structure is simple, applicability is strong, and can effectively utilize existing coaxial cable resource, during installation, without destroying the original wiring of user, reduce installation cost.
For achieving the above object, the utility model has adopted following technical scheme:
A kind ofly be applicable to the coaxial light radio frequency access device to desktop during Fiber to the home, comprise optical network unit, switch, a plurality of medium access control chips, complicated programmable logic device, a plurality of physical chips and a plurality of duplexer filter, described optical network unit signal input part is connected with an optical interface, signal output part is connected with switch, described switch is connected with a plurality of medium access control chips, these a plurality of medium access control chips are connected with complicated programmable logic device input, complicated programmable logic device output is connected with a plurality of physical chips, these a plurality of physical chips and this plurality of duplexer filters connect one to one, described duplexer filter is connected with data coaxial interface.
Wherein, described complicated programmable logic device has been realized the conversion from POSPHY interface to gmii interface, and described optical interface connects data signal line.
Further, described medium access control chip adopts based on IEEE802.3ah control protocol, and the medium access control chip of upward signal and downstream signal employing TDD time division duplex.
Further, described physical chip adopts the physical chip based on many level vestigial side bands of n-VSB modulation system.
Further, cable TV signal and data-signal frequency division multiplexing in described smooth radio frequency access device, wherein data-signal frequency band takies 5～65MHz, and cable TV signal frequency band is 1.3GHz to the maximum.
Further, the integrated setting of described optical network unit, described switch, described a plurality of medium access control chips, described complicated programmable logic device and described a plurality of physical chip forms an integration module.
Compared with prior art, the beneficial effects of the utility model are: adopt point-to-point broadband access, user port can exclusively enjoy the speed of 100Mbps; And this equipment is supported the frequency range of 1.3GHz, be applicable to follow-on transmission demand; Meanwhile, complete integrated to all parts, carry out modularized processing, can make device structure become simple; Can effectively utilize the existing interconnection resource of user, reduce wiring, can not only save installation cost, also not affect attractive in appearance in user family.
Accompanying drawing explanation
Fig. 1 is the circuit diagram that is applicable to the coaxial light radio frequency access device to desktop during Fiber to the home in the utility model one preferred embodiment.
Embodiment
Consult Fig. 1, this is applicable to during Fiber to the home the coaxially light radio frequency access device to desktop and comprises optical network unit ONU, switch S, two medium access control chip MAC, complicated programmable logic device CPLD, two physical chip PHY, two duplexer filter U, optical interface R and two data coaxial interface F; Optical network unit ONU signal input part is connected with optical interface R, signal output part is connected with switch S, switch S is connected with two medium access control chip MAC, two medium access control chip MAC are connected with complicated programmable logic device CPLD input, complicated programmable logic device CPLD output is connected with two physical chip PHY, two physical chip PHY and two duplexer filter U connect one to one, and duplexer filter U is connected with data coaxial interface F; Wherein, optical network unit ONU, switch S, two medium access control chip MAC, complicated programmable logic device CPLD and two integrated settings of physical chip PHY form an integration module.
Further, medium access control chip MAC adopts IEEE802.3ah control protocol, and upward signal and downstream signal employing TDD time division duplex; This physical layer of device adopts many level vestigial side bands of n-VSB modulation system; Cable TV signal and data-signal frequency division multiplexing in this equipment, wherein data-signal frequency band takies 5～65MHz, and cable TV signal frequency band is 1.3GHz to the maximum.
In the present embodiment, the operation principle that is applicable to the coaxial light radio frequency access device to desktop during Fiber to the home is as follows:
Down direction: data-signal enters switch S by optical interface F, the forwarding that completes data in switch S distributes, Ethernet data arrives medium access control chip MAC by RJ-45 interface, in medium access control chip MAC, ether data encapsulation is formed to the data cell form that meets IEEE802.3ah agreement, by POSPHY interface, packaged data are sent in complicated programmable logic device CPLD again; In complicated programmable logic device CPLD, completed the conversion of interface, data are delivered in two physical chip PHY by gmii interface; In two physical chip PHY, adopt n-VSB modulation, by the Data Modulation receiving to the frequency band of 5-65MHz; Again data are sent into two duplexer filter U, in duplexer filter U, had line TV signal separatedly with data-signal, then by two data coaxial interface F, export respectively.
Up direction: data-signal is sent into duplexer filter U from coaxial interface F enters completes the separated of cable TV signal and data-signal in duplexer filter U, sends into respectively afterwards two physical chip PHY; In physical chip PHY, signal is carried out to demodulation, restore the ether data-signal of IEEE802.3ah form, by GMII mouth, enter the conversion that complicated programmable logic device CPLD completes interface, through POSPHY interface, send into two medium access control chip MAC again, medium access control chip MAC extracts local MPCP control information and OAM data message to the user data receiving, and user is uploaded to signal unpack, restore standard ether data; Then by RJ-45 interface, deliver to switch S, the forwarding that completes data in switch S distributes, and by optical interface R, signal is sent.
Below be only concrete exemplary applications of the present utility model, protection range of the present utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technical scheme of formation, within all dropping on the utility model rights protection scope.
Claims (5)
1. one kind is applicable to the coaxial light radio frequency access device to desktop during Fiber to the home, it is characterized in that, it comprises optical network unit, switch, a plurality of medium access control chips, complicated programmable logic device, a plurality of physical chips and a plurality of duplexer filter, described optical network unit signal input part is connected with an optical interface, signal output part is connected with switch, described switch is connected with a plurality of medium access control chips, these a plurality of medium access control chips are connected with complicated programmable logic device input, described complicated programmable logic device output is connected with a plurality of physical chips, these a plurality of physical chips and this plurality of duplexer filters connect one to one, described duplexer filter is connected with data coaxial interface.
2. be according to claim 1ly applicable to the coaxial light radio frequency access device to desktop during Fiber to the home, it is characterized in that, described medium access control chip adopts based on IEEE802.3ah control protocol, and the medium access control chip of upward signal and downstream signal employing TDD time division duplex.
3. be according to claim 1ly applicable to the coaxial light radio frequency access device to desktop during Fiber to the home, it is characterized in that, described physical chip adopts the physical chip based on many level vestigial side bands of n-VSB modulation system.
4. be according to claim 1ly applicable to the coaxial light radio frequency access device to desktop during Fiber to the home, it is characterized in that, cable TV signal and data-signal frequency division multiplexing in described smooth radio frequency access device, wherein data-signal frequency band takies 5～65MHz, and cable TV signal frequency band is 1.3GHz to the maximum.
5. be according to claim 1ly applicable to the coaxial light radio frequency access device to desktop during Fiber to the home, it is characterized in that, the integrated setting of described optical network unit, described switch, a plurality of medium access control chip, described complicated programmable logic device and a plurality of physical chip forms an integration module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320876999.7U CN203775212U (en) | 2013-12-27 | 2013-12-27 | Optical radio frequency access equipment suitable for coaxial access to desk in Fiber to The Home (FTTH) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320876999.7U CN203775212U (en) | 2013-12-27 | 2013-12-27 | Optical radio frequency access equipment suitable for coaxial access to desk in Fiber to The Home (FTTH) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203775212U true CN203775212U (en) | 2014-08-13 |
Family
ID=51292355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320876999.7U Expired - Fee Related CN203775212U (en) | 2013-12-27 | 2013-12-27 | Optical radio frequency access equipment suitable for coaxial access to desk in Fiber to The Home (FTTH) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203775212U (en) |
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2013
- 2013-12-27 CN CN201320876999.7U patent/CN203775212U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Huaizhi Inventor after: Song Tao Inventor after: Li Li Inventor after: Liang Guoping Inventor after: Lu Xiaosu Inventor after: Wang Bin Inventor after: Li Zhe Inventor after: Wei Muxin Inventor after: Chen Haixiong Inventor after: Li Li Inventor before: Chen Huaizhi Inventor before: Li Li Inventor before: Huang Gaoxuan Inventor before: Lu Xiaosu Inventor before: Zhang Bin Inventor before: Li Zhe Inventor before: Qin Xingjian Inventor before: Zhang Haiyu |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CHEN HUAIZHI LI LI HUANG GAOXUAN LU XIAOSU ZHANG BIN LI ZHE QIN XINGJIAN ZHANG HAIYU TO: CHEN HUAIZHI LI LI LIANG GUOPING LU XIAOSU WANG BIN LI ZHE WEI MUXIN CHEN HAIXIONG LI LI SONG TAO |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20161227 |