CN104410925A - A cable TV broadband network system and networking method thereof - Google Patents
A cable TV broadband network system and networking method thereof Download PDFInfo
- Publication number
- CN104410925A CN104410925A CN201410564850.4A CN201410564850A CN104410925A CN 104410925 A CN104410925 A CN 104410925A CN 201410564850 A CN201410564850 A CN 201410564850A CN 104410925 A CN104410925 A CN 104410925A
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- CN
- China
- Prior art keywords
- cable
- epon
- eoc
- clt
- broadband network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6118—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving cable transmission, e.g. using a cable modem
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention provides a cable TV broadband network system and networking method thereof. The system includes an OLT apparatus of an EPON, an ONU apparatus of the EPON, an LAN switch, a CLT apparatus of an EOC and a CNU apparatus. The OLT apparatus of the EPON is disposed at the front machine room; the ONU apparatus of the EPON and the LAN switch are disposed at an optical node; and the CLT apparatus of the EOC is disposed at a floor centralized distributing box. The CLT apparatus is connected to the CNU in the room of the user sequentially through a combiner, a distributor, and a coaxial-cable. A networking mode of EPON+LAN+EOC (1.215 GHz to 2.535GHz) is adapted to the optical transmission network from the optical node to the building. Bandwidth entering home can achieve more than 10 Mbps, the problem of complex wiring is solved, and the effect can be compared with FTTH, and the low construction cost is low.
Description
Technical field
The present invention relates to a kind of cable TV broadband network system and network-building method thereof, particularly relate to and be a kind ofly applicable to broadband network system structure in field of broadcast televisions and network-building method thereof.
Background technology
In prior art, the networking model of cable TV broadband network has:
1, EPON+EOC networking model: convergence-level network EPON technology ONU (Optical Network Unit optical network unit) is laid in optical node; EOC refers to ethernet signal a kind of transmission technology on coax, here the coaxial Ethernet head end of CLT(Coax Line Terminal) be laid in optical node, dock with ONU, radiofrequency signal after modulation is by the coaxial ethernet terminal of CNU(Coax Network Unit of coaxial cable distribution net access user indoor), realize data access network.At present mainly Broadcast Television network operators adopts, and is applicable to the floor (general four floors are a capping unit) in optical node to building.
The defect of EPON+EOC networking model is: user's average bandwidth is less than 5Mbps; CLT cost is high, fluctuation of service; Require that optical node must enter the floor in building, an optical node covers below 32 families.Incompatible DOCSIS system grid connection is run.
2, EPON+LAN networking model: convergence-level network EPON technology ONU is laid in optical node; LAN refers to a kind of transmission technology of ethernet signal on twisted-pair feeder netting twine (category-5 cable, six class lines), here switch is laid in optical node, docks with ONU, also will lay switch at corridor simultaneously, indoor by category-5 cable access user, realize data access network.Mainly telecom operators adopt at present, are applicable to optical node to building.Bandwidth of registering one's residence can reach 10Mbps.
The defect of EPON+EOC networking model is: construction wiring is complicated, and grid electricity fee cost is high.
Summary of the invention
The technical problem to be solved in the present invention is to provide the one broadband that can make to register one's residence and reaches more than 10Mbps, can solve again cable TV broadband network system and the network-building method thereof of wiring challenge.
In those skilled in the art, normal thoughtcast thinks that the network frequency range of broadcasting and TV is at below 860MHz, can not expect in short-range scope by changing distributor, just can realize the transmission of 1.2GHz to 2.5GHz frequency band signals, the equipment of more unexpected research and development EOC (1.215GHz to 2.535GHz).
The technical solution used in the present invention is as follows:
A kind of cable TV broadband network system, is characterized in that: the OLT device comprising EPON, the ONU equipment of EPON and LAN switch, and the CLT equipment of EOC; The OLT device of described EPON is arranged at headend room; ONU equipment and the LAN switch of described EPON are arranged at optical node; The CLT equipment of described EOC is arranged at floor centralized distribution case place; Described CLT equipment is connected to the CNU equipment of user indoor successively by mixer, distributor and coaxial cable.
As preferably, the CLT line terminal equipment output signal frequency range of described EOC is 1.215GHz to 2.535GHz.
As preferably, between described mixer and hfc plant, be connected with 860M low pass filter.
Based on the network-building method of above-mentioned cable TV broadband network group network system, it is characterized in that: from headend room to optical node, adopt EPON technology; From optical node to floor centralized distribution case, adopt lan technology; Indoor from floor centralized distribution case to user, adopt EOC technology.
As preferably, the working frequency range of described EOC is 1.215GHz to 2.535GHz.
As preferably, the working frequency range of described EOC is 2.4GHz.
Compared with prior art, the invention has the beneficial effects as follows: the networking model of cable TV broadband network EPON+LAN+EOC (1.215GHz to 2.535GHz) of the present invention, is applicable to optical node to building.Bandwidth of registering one's residence can reach more than 10Mbps, and solve the problem that wiring is complicated, effect equals to FTTH, construction cost is low.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the present invention's wherein embodiment.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Arbitrary feature disclosed in this specification (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
The basic structure of cable TV transmission network network is centered by headend room, key optical signal transmission is realized by fiber optic network, after optical signal transmission to optical node, the centralized distribution case of the coaxial cable primary transmission signal of telecommunication to floor is begun through from optical node, more indoor to user by coaxial cable distribution net transmission of electric signals.
As shown in Figure 1, be described in detail with the EOC equipment being 2.4GHz based on working frequency range in this specific embodiment.
In this specific embodiment, adopt EOC equipment---the CLT that can launch WiFi signal, described CLT main control chip execution technique standard is IEEE802.11a/b/g/n; Working frequency range: 2.4G; Described in this specific embodiment, CLT adopts Botong BCM5356C0 to be main control chip.
Based on the cable TV broadband network group network system of the EOC equipment of described 2.4GHz, comprise the OLT device of EPON, the ONU equipment of EPON and LAN switch, and the CLT equipment of EOC and CNU equipment; The OLT device of described EPON is arranged at headend room; ONU equipment and the LAN switch of described EPON are arranged at optical node; The CLT equipment of described EOC is arranged at floor centralized distribution case place; Described CLT equipment is connected to the CNU equipment of user indoor successively by mixer, distributor and coaxial cable.
In this specific embodiment, the CLT apparatus output signal frequency range of described EOC is 2.4GHz.EPON+LAN+EOC (2.4GHz) novel cable TV broadband network technology mode in this specific embodiment is on the basis of existing cable TV transmission network network, by laying ONU equipment and the LAN switch of EPON at optical node, lay twisted-pair feeder netting twine again to floor centralized distribution case, and the CLT of EOC (2.4GHz) is laid at floor centralized distribution case, realize.Be connected with 860M low pass filter between described mixer and hfc plant, flow to hfc plant with the high frequency restricting the number of isolating CLT.
Meanwhile, in this specific embodiment, difference with the prior art is also: be arranged on the working frequency range of the distributor of floor and the distributor of user's family at 5MHz to 2.5GHz.
Based on the network-building method of above-mentioned cable TV broadband network group network system, from headend room to optical node, adopt EPON technology, transmission medium is fibre circuit; From optical node to floor centralized distribution case, adopt lan technology, transmission medium is twisted-pair feeder; Indoor from floor centralized distribution case to user, adopt EOC technology, transmission medium is coaxial cable and distributor.
In this specific embodiment, the working frequency range of described EOC is 2.4GHz.
The novel cable TV broadband network technology mode of this EPON+LAN+EOC (2.4GHz) is adopted to be very easy to for the construction of original CATV Distribution Net.Only need gigabit primary transmission Fiber-To-The-Building, EPON-OLT and switch is laid at optical node place, distributed by switch, lay netting twine (six class lines) again to floor centralized distribution case place, lay EOC (2.4GHz)-CLT, special distributor need be changed, utilize original coaxial cable distributed lines to realize wideband data and to register one's residence transmission.
Technical solution of the present invention achieves consumer wideband 10M to 90Mbps, supports that an optical node covers 300 family network sizes, and the construction of twisted-pair feeder netting twine (category-5 cable, six class lines) only need arrive corridor, and construction easily; Meanwhile, can reduce operation power charge, year power consumption is less than 8 degree per family, can compatible DOCSIS system grid connection run, and network rebuilding cost is low, per family lower than 200 yuan.
Claims (7)
1. a cable TV broadband network system, is characterized in that: the OLT device comprising EPON, the ONU equipment of EPON and LAN switch, and the CLT equipment of EOC; The OLT device of described EPON is arranged at headend room; ONU equipment and the LAN switch of described EPON are arranged at optical node; The CLT equipment of described EOC is arranged at floor centralized distribution case place; Described CLT equipment is connected to the CNU equipment of user indoor successively by mixer, distributor and coaxial cable.
2. cable TV broadband network system according to claim 1, is characterized in that: the CLT line terminal equipment output signal frequency range of described EOC is 1.215GHz to 2.535GHz.
3. cable TV broadband network system according to claim 2, is characterized in that: the CLT line terminal equipment output signal frequency range of described EOC is 2.4GHz.
4. according to the cable TV broadband network system one of Claim 1-3 Suo Shu, it is characterized in that: between described mixer and hfc plant, be connected with 860MHz low pass filter.
5. based on the network-building method of cable TV broadband network system according to claim 1, it is characterized in that: from headend room to optical node, adopt EPON technology; From optical node to floor centralized distribution case, adopt lan technology; Indoor from floor centralized distribution case to user, adopt EOC technology.
6. cable TV broadband network network-building method according to claim 5, is characterized in that: the working frequency range scope of described EOC is 1.215GHz to 2.535GHz.
7. cable TV broadband network network-building method according to claim 6, is characterized in that: the working frequency range of described EOC is 2.4GHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410564850.4A CN104410925B (en) | 2014-10-22 | 2014-10-22 | A kind of cable TV broadband network system and its network-building method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410564850.4A CN104410925B (en) | 2014-10-22 | 2014-10-22 | A kind of cable TV broadband network system and its network-building method |
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| Publication Number | Publication Date |
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| CN104410925A true CN104410925A (en) | 2015-03-11 |
| CN104410925B CN104410925B (en) | 2017-10-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107135434A (en) * | 2017-06-08 | 2017-09-05 | 浙江核聚通信技术有限公司 | The device and method of symmetrical broadband connections based on fiber optic cables hybrid passive network |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202353724U (en) * | 2011-06-07 | 2012-07-25 | 聂义林 | Two-way broadcasting television network system |
| US20120257891A1 (en) * | 2011-04-05 | 2012-10-11 | Broadcom Corporation | Traffic Switching In Hybrid Fiber Coaxial (HFC) Network |
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2014
- 2014-10-22 CN CN201410564850.4A patent/CN104410925B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120257891A1 (en) * | 2011-04-05 | 2012-10-11 | Broadcom Corporation | Traffic Switching In Hybrid Fiber Coaxial (HFC) Network |
| CN202353724U (en) * | 2011-06-07 | 2012-07-25 | 聂义林 | Two-way broadcasting television network system |
Non-Patent Citations (2)
| Title |
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| 吴寰等: "住宅小区双向HFC系统的组网与设计", 《建筑电气》 * |
| 邹枫: "基于EPON+EoC的广电双改技术的现状及发展", 《中国有线电视》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107135434A (en) * | 2017-06-08 | 2017-09-05 | 浙江核聚通信技术有限公司 | The device and method of symmetrical broadband connections based on fiber optic cables hybrid passive network |
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| CN104410925B (en) | 2017-10-17 |
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Granted publication date: 20171017 Termination date: 20181022 |