CN104410925B - A kind of cable TV broadband network system and its network-building method - Google Patents
A kind of cable TV broadband network system and its network-building method Download PDFInfo
- Publication number
- CN104410925B CN104410925B CN201410564850.4A CN201410564850A CN104410925B CN 104410925 B CN104410925 B CN 104410925B CN 201410564850 A CN201410564850 A CN 201410564850A CN 104410925 B CN104410925 B CN 104410925B
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- China
- Prior art keywords
- eoc
- epon
- cable
- equipment
- clt
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Classifications
-
- 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
-
- 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
-
- 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 invention provides a kind of cable TV broadband network system and its network-building method.OLT device including EPON, EPON ONU equipment and LAN switch, and EOC CLT equipment, CNU equipment.The OLT device of the EPON is arranged at headend room；The ONU equipment and LAN switch of the EPON is arranged at optical node；The CLT equipment of the EOC is arranged at floor centralized distribution case.The CLT equipment passes sequentially through the CNU that combiner, distributor and coaxial cable are connected in user room.EPON+LAN+EOC (1.215GHz to 2.535GHz) networking model, it is adaptable to the optical fiber transmission network of optical node to building.Bandwidth of registering one's residence can reach more than 10Mbps, solve the problem of wiring is complicated, effect is low comparable to FTTH, construction cost.
Description
Technical field
It is more particularly to a kind of to be applied to extensively the present invention relates to a kind of cable TV broadband network system and its network-building method
Broadcast broadband network system structure and its network-building method in TV domain.
Background technology
The networking model of cable TV broadband network has in the prior art：
1st, EPON+EOC networking models：Converge layer network EPON technologies ONU (Optical Network Unit light nets
Network unit) it is laid in optical node；EOC refers to a kind of transmission technology of ethernet signal on coax, CLT here
（The coaxial Ethernet head ends of Coax Line Terminal）Optical node is laid in, is docked with ONU, the radiofrequency signal after modulation passes through
CNU in coaxial cable distribution net accessing user room（The coaxial ethernet terminals of Coax Network Unit）, realize data access
Network.Presently mainly Broadcast Television network operators are used, it is adaptable to the floor in optical node to building（General four floor is one
Capping unit）.
The defect of EPON+EOC networking models is：User's average bandwidth is less than 5Mbps；CLT costs are high, operation is unstable
It is fixed；It is required that the floor that optical node is had to enter into building a, optical node is covered below 32 families.Incompatible DOCSIS system grid connections fortune
OK.
2nd, EPON+LAN networking models：Convergence layer network is laid in optical node with EPON technologies ONU；LAN refers to Ethernet
Signal is in twisted-pair feeder netting twine（Category-5 cable, six class lines）On a kind of transmission technology, interchanger here is laid in optical node, with
ONU is docked, while interchanger is also laid in corridor, by category-5 cable accessing user room, realizing data access network.At present
Mainly telecom operators use, it is adaptable to optical node to building.Bandwidth of registering one's residence can reach 10Mbps.
The defect of EPON+EOC networking models is：Construction wiring is complicated, and grid electricity fee cost is high.
The content of the invention
More than 10Mbps is reached the technical problem to be solved in the present invention is to provide one kind broadband that can make to register one's residence, and can be solved
Connect up the cable TV broadband network system and its network-building method of challenge.
In those skilled in the art, normal thoughtcast think the network frequency range of broadcasting and TV be in below 860MHz,
It not will recognize that in short-range scope by changing distributor, it is possible to realize the biography of 1.2GHz to 2.5GHz frequency band signals
It is defeated, the equipment of more unexpected research and development EOC (1.215GHz to 2.535GHz).
The technical solution adopted by the present invention is as follows：
A kind of cable TV broadband network system, it is characterised in that：OLT device including EPON, EPON ONU equipment and
LAN switch, and EOC CLT equipment；The OLT device of the EPON is arranged at headend room；The ONU of the EPON is set
Standby and LAN switch is arranged at optical node；The CLT equipment of the EOC is arranged at floor centralized distribution case；The CLT is set
It is standby to pass sequentially through the CNU equipment that combiner, distributor and coaxial cable are connected in user room.
Preferably, the CLT line terminal equipment output signals frequency range of the EOC is 1.215GHz to 2.535GHz.
Preferably, being connected with 860M low pass filters between the combiner and hfc plant.
Network-building method based on above-mentioned cable TV broadband network group network system, it is characterised in that：From headend room to light
Node, using EPON technologies；At from optical node to floor centralized distribution case, using lan technology；At floor centralized distribution case to
In user room, using EOC technologies.
Preferably, the working frequency range of the EOC is 1.215GHz to 2.535GHz.
Preferably, the working frequency range of the EOC is 2.4GHz.
Compared with prior art, the beneficial effects of the invention are as follows：The cable TV broadband network EPON+LAN+ of the present invention
EOC (1.215GHz to 2.535GHz) networking model, it is adaptable to optical node to building.Bandwidth of registering one's residence can reach 10Mbps with
On, the problem of wiring is complicated is solved, effect is low comparable to FTTH, construction cost.
Brief description of the drawings
Fig. 1 is the principle schematic of a wherein embodiment of the invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
This specification（Including any accessory claim, summary and accompanying drawing）Disclosed in any feature, except non-specifically is chatted
State, can alternative features equivalent by other or with similar purpose replaced.I.e., unless specifically stated otherwise, each feature
A simply example in a series of equivalent or similar characteristics.
The basic structure of cable TV transmission network network is centered on headend room, to realize that key light is believed by fiber optic network
Number transmission, after optical signal transmission to optical node, coaxial cable primary transmission electric signal is begun through to the collection of floor from optical node
Middle distributor box, then by coaxial cable distribution net transmitting telecommunication number to user room.
As shown in figure 1, being carried out specifically using the EOC equipment based on working frequency range as 2.4GHz in this specific embodiment
It is bright.
In this specific embodiment, use can launch EOC equipment --- the CLT of WiFi signal, and the CLT main control chips are held
Row technical standard is IEEE802.11a/b/g/n；Working frequency range：2.4G；CLT uses Botong described in this specific embodiment
BCM5356C0 is main control chip.
The cable TV broadband network group network system of EOC equipment based on the 2.4GHz, includes EPON OLT device,
EPON ONU equipment and LAN switch, and EOC CLT equipment and CNU equipment；The OLT device of the EPON is arranged at
Headend room；The ONU equipment and LAN switch of the EPON is arranged at optical node；The CLT equipment of the EOC is arranged at building
At layer centralized distribution case；The CLT equipment passes sequentially through the CNU that combiner, distributor and coaxial cable are connected in user room
Equipment.
In this specific embodiment, the CLT apparatus output signals frequency range of the EOC is 2.4GHz.In this specific embodiment
The new cable TV broadband network technology modes of EPON+LAN+EOC (2.4GHz) be in existing cable TV transmission network network
On the basis of, by laying EPON ONU equipment and LAN switch in optical node, then twisted-pair feeder netting twine is laid to floor collection
Middle distributor box, and EOC (2.4GHz) CLT is laid in floor centralized distribution case, come what is realized.The combiner and hfc plant
Between be connected with 860M low pass filters, hfc plant is flowed to the high frequency restricting the number for isolating CLT.
Meanwhile, in this specific embodiment, difference with the prior art is also resided in：Distributor and user installed in floor
The working frequency range of the distributor of family is in 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, use
EPON technologies, transmission medium is fibre circuit；At from optical node to floor centralized distribution case, using lan technology, transmission medium
For twisted-pair feeder；To in user room at floor centralized distribution case, using EOC technologies, transmission medium is coaxial cable and distributor.
In this specific embodiment, the working frequency range of the EOC is 2.4GHz.
Had using this EPON+LAN+EOC (2.4GHz) new cable TV broadband network technology mode for original
The construction of line TV distribution net is very easy to.Gigabit primary transmission FTTB is only needed, EPON-OLT is laid at optical node
And interchanger, distributed by interchanger, then lay netting twine（Six class lines）To at floor centralized distribution case, EOC is laid
(2.4GHz)-CLT, need to change special distributor, realize that wideband data is registered one's residence biography using original coaxial cable distributed lines
It is defeated.
Technical solution of the present invention realizes consumer wideband 10M to 90Mbps, supports the family network rule of optical node covering 300
Mould, twisted-pair feeder netting twine（Category-5 cable, six class lines）Construction need to only arrive corridor, construction is easy；Meanwhile, operation power charge, family can be reduced
Equal year power consumption is less than 8 degree, energy compatibility DOCSIS system grid connection operations, also, network rebuilding cost is low, per family less than 200 yuan.
Claims (7)
1. a kind of cable TV broadband network system, it is characterised in that：OLT device including EPON, EPON ONU equipment drawn game
Domain network switch, and EOC CLT equipment；The OLT device of the EPON is arranged at headend room；The ONU equipment of the EPON
Optical node is arranged at LAN switch；The CLT equipment of the EOC is arranged at floor centralized distribution case；The CLT equipment
Pass sequentially through the CNU equipment that combiner, distributor and coaxial cable are connected in user room；
From headend room to optical node, using EPON technologies；At from optical node to floor centralized distribution case, using lan technology；From
Arrived at floor centralized distribution case in user room, using EOC technologies.
2. cable TV broadband network system according to claim 1, it is characterised in that：The CLT line terminals of the EOC
Apparatus output signal frequency range is 1.215GHz to 2.535GHz.
3. cable TV broadband network system according to claim 2, it is characterised in that：The CLT line terminals of the EOC
Apparatus output signal frequency range is 2.4GHz.
4. the cable TV broadband network system according to one of Claim 1-3, it is characterised in that：The combiner with
860MHz low pass filters are connected between hfc plant.
5. the network-building method based on the cable TV broadband network system described in claim 1, it is characterised in that：From headend room
To optical node, using EPON technologies；At from optical node to floor centralized distribution case, using lan technology；From floor centralized distribution case
Locate into user room, using EOC technologies.
6. network-building method according to claim 5, it is characterised in that：The working frequency range scope of the EOC is 1.215GHz
To 2.535GHz.
7. network-building method according to claim 6, it is characterised in that：The working frequency range of the 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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104410925A CN104410925A (en) | 2015-03-11 |
| CN104410925B true CN104410925B (en) | 2017-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410564850.4A Expired - Fee Related 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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Families Citing this family (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 (1)
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9130878B2 (en) * | 2011-04-05 | 2015-09-08 | Broadcom Corporation | Traffic switching in hybrid fiber coaxial (HFC) network |
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2014
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Patent Citations (1)
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| 住宅小区双向HFC系统的组网与设计;吴寰等;《建筑电气》;20071130(第11期);第2节、3.2、3.3节，图1 * |
| 基于EPON+EoC的广电双改技术的现状及发展;邹枫;《中国有线电视》;20111031(第10期);第3节，图2 * |
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| CN104410925A (en) | 2015-03-11 |
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Granted publication date: 20171017 Termination date: 20181022 |