CN104394047A - High-definition bidirectional HFC (Hybrid Fiber Coaxial) system based on broadcast television network - Google Patents
High-definition bidirectional HFC (Hybrid Fiber Coaxial) system based on broadcast television network Download PDFInfo
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- CN104394047A CN104394047A CN201410595146.5A CN201410595146A CN104394047A CN 104394047 A CN104394047 A CN 104394047A CN 201410595146 A CN201410595146 A CN 201410595146A CN 104394047 A CN104394047 A CN 104394047A
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Abstract
The invention discloses a high-definition bidirectional HFC (Hybrid Fiber Coaxial) system based on a broadcast television network. The high-definition bidirectional HFC system comprises an Ethernet switch, a cable modulation demodulator terminal, a head end router, an up-converter, a mixer, a shunt, optical transmission equipment, an optical node, an amplifier and a splitter which are all successively connected, wherein the Ethernet switch is also connected with a routing switch, a video server and a Web server, and the splitter is also connected with a plurality of PCs (Personal Computer) and user terminals. Through an above principle, a user and a data network carry out bidirectional information transmission to meet requirements for interactive data service of the user, meanwhile, an input/output signal of the splitter can be subjected to amplification processing, clear signal reception of a receiving end is guaranteed, and transmission quality is guaranteed.
Description
Technical field
The present invention relates to broadband access field, be specifically related to the high definition bidirectional HFC system based on television network broadcast.
Background technology
HFC(Hybird Fibre Coax) net refers to that optical fiber mixes Coaxial Network, having huge scale in China, is China's genuine " common people's net ".In front end, after information enters optical node, complete prevailing transmission part by optical fiber, User Access Layer then adopts coaxial cable access.Most newly-built or build catv network again and have employed this structure, its system bandwidth is 750MHz or 860MHz, and easily extensible is to 1GHz, but state of affairs is substantially still analog television broadcast at present, does not conform to its potential broadband access advantage.Can only one-way transmission be carried out between the network user and data network in broadband access system of today, the demand of user to interactive data service cannot be realized.And existing signal transmission network is after splitter is to the by-passing of input/output signal, and signal weakens greatly, cause receiving end signal unintelligible, affect the use of user.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, high definition bidirectional HFC system based on television network broadcast is provided, this system realizes user and data network carries out bidirectional transfer of information, meet the demand of user to interactive data service, amplification process can be carried out to splitter input/output signal simultaneously, ensure that receiving terminal can receive signal clearly, ensure the quality of transmission.
For solving above-mentioned technical problem, the present invention is by the following technical solutions: based on the high definition bidirectional HFC system of television network broadcast, comprise the Ethernet switch, cable modem terminal, head-end router, upconverter, blender, splitter, optical transmission device, optical node, amplifier and the splitter that connect successively, described Ethernet switch is connection route switch, video server and Web server also, and described splitter also connects multiple PC and user terminal.
Arrange head-end router enters Internet gateway as cable modem terminal use within the system, it provides each user to enter the passage of data network.It is responsible for cable modem terminal distribution uplink and downlink frequency band.Cable modem terminal can only receive the signal of a downstream bands at one time, but can at the control down conversion channel of head-end router.Upstream band is also divided into several channels, and multiple cable modem terminal is shared, and concrete busy channel is also controlled by head-end router.Like this, uplink and downlink channel just forms a transmitted in both directions net, can realize user and data network carries out bidirectional transfer of information, meets the demand of user to interactive data service.
Signal transmissions is transferred to different PCs and user terminal to after splitter branch by the backward rear transmission of shunt again by input signal after amplifier amplifies, and ensures that receiving terminal can receive signal clearly, ensures the quality of transmission.Because input signal is after shunt, signal strength signal intensity weakens, if give user terminal and different PC be directly transferred to splitter after amplification after, because splitter separates a part lower than one of main signal levels or the electronic circuit of several equal signal, the signal that user terminal and different PC then can be caused to receive is fainter, affects reception.When user side signal is through the reverse returned data net of splitter, amplifier is passed back after first being amplified by signal again, ensures that data network can correctly identify this signal, better meets the demand of user to interactive data service.
System is made up of local side apparatus, optical node.Local side apparatus is made up of cable modem terminal, upconverter, Ethernet switch, server and optical transmission device, and optical transmission device major function has been electro-optic conversion, is made up of forward Optical Transmit Unit and inverse photoemission unit.The multiple different server of this Operation system setting and switch utilize existing catv network resource, convenient and diversified business can be supplied to user, integrate video, data, speech, achieve the Integrated access of multiple business such as analog video, digital video and high speed internet.
Described blender is gone back connecting analog TV signal.
The model of described head-end router is uBR7246.This kind of router effect is better.
Described multi-layer switches are Huawei S7700 Intelligent routing switch.Thering is provided on stable, reliable, safe high-performance L2 ~ L4 layer Exchange Service basis, the IN service optimization means such as MPLS VPN, traffic flow analysis, perfect QOS strategy, controllable multicast, balancing resource load, integrated safe is provided further, possess superpower autgmentability and reliability simultaneously, be very suitable for wireless, speech, video and data fusion network carries out advanced control.
Described Ethernet switch model is Huawei S5700-24TP-SI(AC).Practical function, support route and MCE function, fail safe is high, and interface, power supply and indicator light all exist, and conveniently check and manage.
Compared with prior art, the invention has the beneficial effects as follows:
1, Signal transmissions is transferred to different PCs and user terminal to after splitter branch by the backward rear transmission of shunt again by input signal after amplifier amplifies, user side signal is returned data net again after amplifier amplifies first, ensure that two-way receiving terminal all can receive signal clearly, ensure the quality of transmission.
2, arrange head-end router enters Internet gateway as cable modem terminal use in this system, it provides each user to enter the passage of data network, and head-end router is responsible for cable modem terminal distribution uplink and downlink frequency band; Cable modem terminal can only receive the signal of a downstream bands at one time, but can at the control down conversion channel of head-end router; Uplink and downlink channel just forms a transmitted in both directions net, can realize user and data network carries out bidirectional transfer of information, meets the demand of user to interactive data service.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated, and embodiments of the invention are not limited thereto.
Embodiment 1:
As shown in Figure 1, the present invention includes the Ethernet switch, cable modem terminal, head-end router, upconverter, blender, splitter, optical transmission device, optical node, amplifier and the splitter that connect successively, described Ethernet switch is connection route switch, video server and Web server also, and described splitter also connects multiple PC and user terminal.
Arrange head-end router enters Internet gateway as cable modem terminal use within the system, it provides each user to enter the passage of data network.It is responsible for cable modem terminal distribution uplink and downlink frequency band.Cable modem terminal can only receive the signal of a downstream bands at one time, but can at the control down conversion channel of head-end router.Upstream band is also divided into several channels, and multiple cable modem terminal is shared, and concrete busy channel is also controlled by head-end router.Like this, uplink and downlink channel just forms a transmitted in both directions net, can realize user and data network carries out bidirectional transfer of information, meets the demand of user to interactive data service.
Signal transmissions is transferred to different PCs and user terminal to after splitter branch by the backward rear transmission of shunt again by input signal after amplifier amplifies, and ensures that receiving terminal can receive signal clearly, ensures the quality of transmission.Because input signal is after shunt, signal strength signal intensity weakens, if give user terminal and different PC be directly transferred to splitter after amplification after, because splitter separates a part lower than one of main signal levels or the electronic circuit of several equal signal, the signal that user terminal and different PC then can be caused to receive is fainter, affects reception.When user side signal is through the reverse returned data net of splitter, amplifier is passed back after first being amplified by signal again, ensures that data network can correctly identify this signal, better meets the demand of user to interactive data service.
System is made up of local side apparatus, optical node.Local side apparatus is made up of cable modem terminal, upconverter, Ethernet switch, server and optical transmission device, and optical transmission device major function has been electro-optic conversion, is made up of forward Optical Transmit Unit and inverse photoemission unit.The multiple different server of this Operation system setting and switch utilize existing catv network resource, convenient and diversified business can be supplied to user, integrate video, data, speech, achieve the Integrated access of multiple business such as analog video, digital video and high speed internet.
Embodiment 2:
The present embodiment preferred concrete structure on the basis of embodiment 1 is as follows: described blender is gone back connecting analog TV signal.
The model of described head-end router is uBR7246.This kind of router effect is better.
Described multi-layer switches are Huawei S7700 Intelligent routing switch.Thering is provided on stable, reliable, safe high-performance L2 ~ L4 layer Exchange Service basis, the IN service optimization means such as MPLS VPN, traffic flow analysis, perfect QOS strategy, controllable multicast, balancing resource load, integrated safe is provided further, possess superpower autgmentability and reliability simultaneously, be very suitable for wireless, speech, video and data fusion network carries out advanced control.
Described Ethernet switch model is Huawei S5700-24TP-SI(AC).Practical function, support route and MCE function, fail safe is high, and interface, power supply and indicator light all exist, and conveniently check and manage.
Just this invention can be realized as mentioned above.
Claims (5)
1. based on the high definition bidirectional HFC system of television network broadcast, it is characterized in that: comprise the Ethernet switch, cable modem terminal, head-end router, upconverter, blender, splitter, optical transmission device, optical node, amplifier and the splitter that connect successively, described Ethernet switch is connection route switch, video server and Web server also, and described splitter also connects multiple PC and user terminal.
2., according to claim 1 based on the high definition bidirectional HFC system of television network broadcast, it is characterized in that: described blender is gone back connecting analog TV signal.
3. according to claim 1 based on the high definition bidirectional HFC system of television network broadcast, it is characterized in that: the model of described head-end router is uBR7246.
4. according to claim 1 based on the high definition bidirectional HFC system of television network broadcast, it is characterized in that: described multi-layer switches are Huawei S7700 Intelligent routing switch.
5. according to claim 1 based on the high definition bidirectional HFC system of television network broadcast, it is characterized in that: described Ethernet switch model is Huawei S5700-24TP-SI(AC).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410595146.5A CN104394047A (en) | 2014-10-30 | 2014-10-30 | High-definition bidirectional HFC (Hybrid Fiber Coaxial) system based on broadcast television network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410595146.5A CN104394047A (en) | 2014-10-30 | 2014-10-30 | High-definition bidirectional HFC (Hybrid Fiber Coaxial) system based on broadcast television network |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030121056A1 (en) * | 2001-12-21 | 2003-06-26 | Sorenson Donald C. | HFC reverse path using an intelligent dynamic switch |
| CN1615013A (en) * | 2003-11-05 | 2005-05-11 | 华为技术有限公司 | System for realizing wideband inserting in wireless Tv-set network |
| CN1787519A (en) * | 2004-12-10 | 2006-06-14 | 华为技术有限公司 | Apparatus for realizing data transmitting and data access system thereof |
| CN200983645Y (en) * | 2006-12-06 | 2007-11-28 | 赵志仁 | A broadband access system device of CATV coaxial cable network |
-
2014
- 2014-10-30 CN CN201410595146.5A patent/CN104394047A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030121056A1 (en) * | 2001-12-21 | 2003-06-26 | Sorenson Donald C. | HFC reverse path using an intelligent dynamic switch |
| CN1615013A (en) * | 2003-11-05 | 2005-05-11 | 华为技术有限公司 | System for realizing wideband inserting in wireless Tv-set network |
| CN1787519A (en) * | 2004-12-10 | 2006-06-14 | 华为技术有限公司 | Apparatus for realizing data transmitting and data access system thereof |
| CN200983645Y (en) * | 2006-12-06 | 2007-11-28 | 赵志仁 | A broadband access system device of CATV coaxial cable network |
Non-Patent Citations (2)
| Title |
|---|
| 宗瑞朝: "三网融合与广电网络双向建设", 《通信与信息技术》 * |
| 王杰: "基于S-CDMA的HFC接入网技术分析", 《中国有线电视》 * |
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Application publication date: 20150304 |
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