CN202334775U

CN202334775U - Next generation broadcasting network local controller

Info

Publication number: CN202334775U
Application number: CN2011204121647U
Authority: CN
Inventors: 袁发农; 张怡; 叶黎达; 饶思霆
Original assignee: CHANGSHU GAOSHIDA OPTOELECTRONIC TECHNOLOGY Co Ltd
Current assignee: CHANGSHU GAOSHIDA OPTOELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2011-10-26
Filing date: 2011-10-26
Publication date: 2012-07-11
Anticipated expiration: 2021-10-26

Abstract

A next generation broadcasting network (NGB) local controller and belongs to the technical field of wire televisions. The controller comprises EOC local modules 1-4, r-f lines JP1-JP4, r-f holders J1-J7, connectors IN1-IN4, OUT1-OUT4, AC60VIN, branch distributing plug-in units FP/FZ1-FP/FZ3, couplers L1-L36 and 1L1-1L8, power strips CP1-CP8, discharge tubes D1-D9, and capacitors C1-C29 and CC1-CC56. The next generation broadcasting network local controller has the advantages that noise convergence is less, the bandwidth is broad, the property of the controller meets IP-lization, transformation cost per household is low, upgrade and capacity expansion are facilitated, and the reliability is high.

Description

Broadcasting and television network local side controller of future generation

Technical field

B >the utility model relates to a kind of NGB(Next eneration Broadcasting that the cable TV network integration of three networks is transformed that is used for; broadcasting and television network of future generation) the local side controller; belong to the cable TV technical field, especially hybrid fiber coax EOC(Ethernet Over able ethernet coaxial cable transmission head end) network rebuilding a kind of based on cable TV transmitted in both directions equipment.

Background technology

< on December 4th, b >; the Department of Science and Technology and General Bureau of Radio, Film and Television sign " national high performance wide-band-message net and Chinese broadcasting and television network autonomous innovation cooperation agreement book of future generation " jointly; in " cooperation agreement book ", proposed the notion of NGB first, indicated the formal departure in China Broadcast & Television NGB epoch.In the Executive Meeting of the State Council that 2010 beginning of the years, the Premier Wen Jiabao held; Decision accelerates to advance the integration of three networks of telecommunications network, broadcasting and television network and the Internet; Proposed two in the meeting and gone on foot the interim target of walking: 2010 ~ 2012; Two-way entering pilot is explored and is formed standardized and orderly policy system of carrying out of the integration of three networks and the system mechanism of ensureing.2013 ~ 2015, sum up to promote the pilot experience, round Realization integration of three networks development, the popularization and application fused business basically forms the network industry general layout of adequate competition.Therefore applicant's integration of three networks local side controller meets guide " based on the integration of three networks evolution technology of new network architectural framework " requirement fully.NGB local side controller is the network intermediate products of broadcasting and TV NGB networking, merges cable TV signal and data-signal, is implemented in transmission cable TV and data communication service in original hfc plant.Develop the integral telecommunication business through cable TV, promptly cable TV network also possesses functions such as online, data transmission, video request program, household's IT application except transmitting TV programme.1997 after the DOCSIS1.0 issue; Domestic and international HFC(Hybrid Fiber Coax; Hybrid fiber coax) the network bi-directional transformation is mainly based on North America cable TV modulator-demodulator product standard (DOCSIS); Be that CMTS, upconverter, Operation & Maintenance System server (Oss Server are set on the basis of hfc plant system configuration) and cable modem equipment such as (CM, Cable Modem) be implemented in the hfc plant transmission CATV signal and data communication service.But the CMTS technology can only be carried out data communication service in the hfc plant system; Can not realize common telephone service etc.; On multi-service realizes, exist not enough; Improvement cost is too high; Solve simultaneously upstream noise converge the technical support that needs in a short time also difficulty reason such as properly settle; Cause from the whole nation on the whole, the utilization of DOCSIS technology is also unsuccessful.Simultaneously should technology except that the higher share of the more sparse North America DOCSIS standard access way occupation ratio of population distribution; In the Asia and other people mouthful relatively seldom than the number of users of the regional standard of comparatively dense, this enforcement in several years of domestic radio and TV operator is indicating that also the DOCSIS standard is difficult to become the bidirectional rebuilding technology of main flow in China.Wherein: <>

< > CMTS: the data that are hfc plant insert local side apparatus, are the connection devices that data are transmitted in hfc plant, are mainly used in to accomplish forwarding of data, protocol processes and rf modulations demodulation function in the data communication network; <>

< > Upconverter: being arranged in CMTS, is the frequency conversion device of hfc plant, and the descending analog intermediate frequency signal that is mainly used in CMTS output is converted on arbitrary television channel of CATV; <>

< > Oss Server: be whole system and Network Management equipment, be used to provide system's operation required various service supports, as DHCP, TFTP, TOD, LOG service function etc. are provided for system; <>

CM: be connected with user terminal with hfc plant, be mainly used in data forwarding, protocol processes and the modulation function etc. accomplished between hfc plant and the user terminal.

B >but the CMTS technology can only be carried out data communication service in the hfc plant system, can not realize common telephone service etc., on multi-service realizes, exist not enough.Simultaneously, use the CMTS technology in the hfc plant system, to carry out data communication service, some technical problem below also existing: <>

is noise collection effect 1.: for most of cable television operators, upstream noise is a ubiquitous problem, especially at low-frequency band (< 65MHz).Common this noise is by terminal box in electric motor, thunder and lightning, HAM, shortwave broadcasting even sunspot and the users home; Imbed the cable quality in the wall; Private connects non-standard component; Situation such as all kinds of interface adhesive plaster of family connection line cause; It will destroy the transfer of data of data feedback channel (reverse return path); So that reduce the user's communications quality; Especially under real time business situations such as video or IP speech; Noise jamming will cause transfer of data time-delay and shake, cause video image distortion or speech discontinuous.This has very high electrical connection quality coefficient with regard to requiring the coaxial fitting in the hfc plant, and the technical support that needs of maintenance and operation troubles eliminating China's most of areas in a short time also difficulty properly settle.

< 2. bandwidth is low for b >: adopt CMTS to carry out bidirectional rebuilding, need optical receiver and amplifier are carried out bidirectional rebuilding (increasing the back emitted module, reverse amplification module), also need add equipment such as backlight receiver and upconverter.Its downlink transfer speed is 160 bps, and uplink speed is that share at 120M bps 100 families, and each household has only descending 1.6 bps and up 1.2M bps.Limitation is a little less than the CMTS equipment bag transfer capability pps up to ten thousand are only arranged generally, can't satisfy growing high broadband services demand.In addition; CMTS device data function is simple; Simple medium access control sublayer agreement (MAC Access Control is only arranged) learning management; The bridges forward ability; Agreement (IP, the Internet Protocol) routing device that needs to interconnect between the external network is accomplished building of business platform.

B >does not 3. meet IPization trend: CMTS and adopts many-valued quadrature amplitude modulation (MQAM) modulation system is that the analog network and the network IPization of transmission radio-frequency carrier signal runs in the opposite direction with the ether networking in essence.

< 4. cost is high per family for b >: though CMTS covering cost is low, the user need be equipped with CM and do broadband access and online, and price comparison is high.The project up-front investment is big, need carry out bidirectional rebuilding to the transmission equipment in the existing hfc plant.After the userbase development, many users of CMTS share the 38M bandwidth, can not satisfy the use of a large number of users, and cost is still higher per family.

5. is not easy to upgrade expanding: because the channel that interactive service takies is too much unsuitable, arrange 8 channels for general descending.Because the corresponding relation of CMTS and optical sender; If each optical node is served 100 families; Two-way 2 channels (38Mdps was shared at 50 families when descending employing 64QAM modulated) that respectively take, 1 optical sender can only be with 4 optical nodes, can only select the 6mW optical sender for use like this.If 1 sub-headend is served 20,000 families, just need 50 optical senders and 50 8 channel C MTS, 20,000 CM.This mode headend equipment enormous amount, maintenance management is complicated, and the upgrade expanding of rear end IP metropolitan area network is caused great pressure <>

Summary of the invention

< purpose of b >the utility model is that a kind of broadcasting and television network local side controller of future generation will be provided, and its noise collection effect is little, and the bandwidth that provides is high, meets IPization, and improvement cost is lower per family, is convenient to upgrade expanding, and reliability is high.

< purpose of b >the utility model reaches like this, and a kind of broadcasting and television network local side controller of future generation comprises EOC local side module 1-4; radio frequency line JP1-JP4; radio frequency seat J1-J7; joint IN1-IN4 IN; finger assignments plug-in unit FP/FZ1-FP/FZ3; inductance L1-L36; Inductance 1L1-1L8; Cross electric socket CP1-CP8; Discharge tube D1-D9; Electric capacity C1-C29 and electric capacity CC1-CC56; The end of optical receiver delivery outlet 1 jointing IN1, another termination capacitor C2 of joint IN1; Discharge tube D2; The end of inductance 1L2, the other end ground connection of discharge tube D2; Another termination capacitor C11 of inductance 1L2; Cross the end of electric socket CP2, the other end ground connection of electric capacity C11, another termination inductance L4 of electric capacity C2; The end of electric capacity CC4; The other end ground connection of inductance L4, another termination inductance L3 of electric capacity CC4; The end of electric capacity CC3, the end of another termination capacitor CC7 of inductance L3; The other end ground connection of electric capacity CC7, another termination inductance L2 of electric capacity CC3; The end of electric capacity CC2, the end of another termination capacitor CC6 of inductance L2; The other end ground connection of electric capacity CC6; Another termination inductance L1 of electric capacity CC2; The end of electric capacity CC1, the end of another termination capacitor CC5 of inductance L1, the other end ground connection of electric capacity CC5; Another termination inductance L5 of electric capacity CC1; The end of electric capacity C1; Another edge joint UT1 of electric capacity C1; The end of discharge tube D1; The end of inductance 1L1, the other end ground connection of discharge tube D1, another termination capacitor C9 of inductance 1L1; Cross the end of electric socket CP1; The other end ground connection of electric capacity C9; The end of optical receiver delivery outlet 2 jointing IN2, another termination capacitor C4 of joint IN2; Discharge tube D4; The end of inductance 1L4, the other end ground connection of discharge tube D4; Another termination capacitor C15 of inductance 1L4; Cross the end of electric socket CP4; The other end ground connection of electric capacity C15, another termination inductance L13 of electric capacity C4; The end of electric capacity CC18, the other end ground connection of inductance L13; Another termination inductance L12 of electric capacity CC18; The end of electric capacity CC17; The end of another termination capacitor CC21 of inductance L12, the other end ground connection of electric capacity CC21, another termination inductance L11 of electric capacity CC17; The end of electric capacity CC16; The end of another termination capacitor CC20 of inductance L11; The other end ground connection of electric capacity CC20, another termination inductance L10 of electric capacity CC16; The end of electric capacity CC15, the end of another termination capacitor CC19 of inductance L10; The other end ground connection of electric capacity CC19; Another termination inductance L14 of electric capacity CC15; The end of electric capacity C3, another edge joint UT2 of electric capacity C3; Discharge tube D3; The end of inductance 1L3, the other end ground connection of discharge tube D3; Another termination capacitor C13 of inductance 1L3; Cross the end of electric socket CP3; The other end ground connection of electric capacity C13, the end of optical receiver delivery outlet 3 jointing IN3, another termination capacitor C6 of joint IN3; Discharge tube D6; The end of inductance 1L6; The other end ground connection of discharge tube D6; Another termination capacitor C19 of inductance 1L6; Cross the end of electric socket CP6, the other end ground connection of electric capacity C19, another termination inductance L22 of electric capacity C6; The end of electric capacity CC32; The other end ground connection of inductance L22; Another termination inductance L21 of electric capacity CC32; The end of electric capacity CC31, the end of another termination capacitor CC35 of inductance L21, the other end ground connection of electric capacity CC35; Another termination inductance L20 of electric capacity CC31; The end of electric capacity CC30; The end of another termination capacitor CC34 of inductance L20, the other end ground connection of electric capacity CC34, another termination inductance L19 of electric capacity CC30; The end of electric capacity CC29; The end of another termination capacitor CC33 of inductance L19; The other end ground connection of electric capacity CC33, another termination inductance L23 of electric capacity CC29; The end of electric capacity C5, another edge joint UT3 of electric capacity C5; The end of discharge tube D5; The end of inductance 1L5; The other end ground connection of discharge tube D5; Another termination capacitor C17 of inductance 1L5; Cross the end of electric socket CP5, the other end ground connection of electric capacity C17, the end of optical receiver delivery outlet 4 jointing IN4; Another termination capacitor C8 of joint IN4; Discharge tube D8; The end of inductance 1L8; The other end ground connection of discharge tube D8, another termination capacitor C23 of inductance 1L8; Cross the end of electric socket CP8, the other end ground connection of electric capacity C23; Another termination inductance L31 of electric capacity C8; The end of electric capacity CC46; The other end ground connection of inductance L31, another termination inductance L30 of electric capacity CC46; The end of electric capacity CC45, the end of another termination capacitor CC49 of inductance L30; The other end ground connection of electric capacity CC49; Another termination inductance L29 of electric capacity CC45; The end of electric capacity CC44, the end of another termination capacitor CC48 of inductance L29, the other end ground connection of electric capacity CC48; Another termination inductance L28 of electric capacity CC44; The end of electric capacity CC43; The end of another termination capacitor CC47 of inductance L28, the other end ground connection of electric capacity CC47, another termination inductance L32 of electric capacity CC43; The end of electric capacity C7; Another edge joint UT4 of electric capacity C7; Discharge tube D7; The end of inductance 1L7; The other end ground connection of discharge tube D7, another termination capacitor C21 of inductance 1L7; Cross the end of electric socket CP7, the other end ground connection of electric capacity C21; The end of the termination inductance L9 of radio frequency seat J4; The end of another termination capacitor CC10 of inductance L9, another termination inductance L8 of electric capacity CC10; The end of electric capacity CC9, the end of another termination capacitor CC14 of inductance L8; The other end ground connection of electric capacity CC14; Another termination inductance L7 of electric capacity CC9; The end of electric capacity CC8, the end of another termination capacitor CC13 of inductance L7, the other end ground connection of electric capacity CC13; Another termination inductance L6 of electric capacity CC8; The end of electric capacity CC11; The other end of inductance L5; The other end ground connection of electric capacity CC11, the end of another termination capacitor CC12 of inductance L6, the other end ground connection of electric capacity CC12; The end of the termination inductance L18 of radio frequency seat J5; The end of another termination capacitor CC24 of inductance L18, another termination inductance L17 of electric capacity CC24; The end of electric capacity CC23, the end of another termination capacitor CC28 of inductance L17; The other end ground connection of electric capacity CC28; Another termination inductance L16 of electric capacity CC23; The end of electric capacity CC22, the end of another termination capacitor CC27 of inductance L16, the other end ground connection of electric capacity CC27; Another termination inductance L15 of electric capacity CC22; The end of electric capacity CC25; The other end of inductance L14; The other end ground connection of electric capacity CC25, the end of another termination capacitor CC26 of inductance L15, the other end ground connection of electric capacity CC26; The end of the termination inductance L27 of radio frequency seat J6; The end of another termination capacitor CC38 of inductance L27, another termination inductance L26 of electric capacity CC38; The end of electric capacity CC37, the end of another termination capacitor CC42 of inductance L26; The other end ground connection of electric capacity CC42; Another termination inductance L25 of electric capacity CC37; The end of electric capacity CC36, the end of another termination capacitor CC41 of inductance L25, the other end ground connection of electric capacity CC41; Another termination inductance L24 of electric capacity CC36; The end of electric capacity CC39; The other end of inductance L23; The other end ground connection of electric capacity CC39, the end of another termination capacitor CC40 of inductance L24, the other end ground connection of electric capacity CC40; The end of the termination inductance L36 of radio frequency seat J7; The end of another termination capacitor CC52 of inductance L36, another termination inductance L35 of electric capacity CC52; The end of electric capacity CC51, the end of another termination capacitor CC56 of inductance L35; The other end ground connection of electric capacity CC56; Another termination inductance L34 of electric capacity CC51; The end of electric capacity CC50, the end of another termination capacitor CC55 of inductance L34, the other end ground connection of electric capacity CC55; Another termination inductance L33 of electric capacity CC50; The end of electric capacity CC53; The other end of inductance L32; The other end ground connection of electric capacity CC53, the end of another termination capacitor CC54 of inductance L33, the other end ground connection of electric capacity CC54; Joint AC60V IN takes over the other end of electric socket CP1-CP8; Discharge tube D9; The end of electric capacity C10; Discharge tube D9; The other end ground connection of electric capacity C10, radio frequency seat J4; The other end of J5 is connected with two outputs of distribution branch plug-in unit FP/FZ2 respectively, radio frequency seat J6; The other end of J7 is connected with two outputs of distribution branch plug-in unit FP/FZ3 respectively; The end of the input termination radio frequency seat J2 of distribution branch plug-in unit FP/FZ2; The end of the input termination radio frequency seat J3 of distribution branch plug-in unit FP/FZ3, radio frequency seat J2; The other end of J3 is connected with two outputs of distribution branch plug-in unit FP/FZ1 respectively, and the input of distribution branch plug-in unit FP/FZ1 is connected with the end of radio frequency seat J1; Radio frequency line JP1-JP4 is connected with the output of EOC local side module 1-4 respectively, and radio frequency line JP1 connects the other end of radio frequency seat J1.

the utility model is owing to adopted above technical scheme, and its noise collection effect is little, and the bandwidth that provides is high, meets IPization, and improvement cost is lower per family, is convenient to upgrade expanding, and reliability is high.

Description of drawings

Fig. 1 is the schematic diagram of the utility model.

Embodiment

< the local side controller that is used for the cable TV EOC network rebuilding of b >the utility model mixes the back to Data Base band signal and CATV signal and on the coaxial cable of cable TV HFC net, realizes transmitted in both directions, is transformed into two-way a, broadband, the digitized novel access network that can adapt to multimedia service on the catv network with the One-to-All Broadcast formula.According to the NGB demand, broadcasting and TV were at following 10 years, and for different stages of development, user's bandwidth can be from 5-10Mbps> 20-30Mbps> 100Mbps is progressive; To guarantee that the domestic consumer can enjoy the data business of networking of 1 road HDTV, the clear TV of 2 road signs and 4M simultaneously; This equipment has extensively covering and characteristics cheaply fast; Make full use of the legacy network resource; The current network of need not upgrading can cover the user in whole sub-district or building as long as single-point is just installed.According to actual conditions, only the area that demand is arranged is installed, do not need disposable deployed with devices to be put in place, each household networking cost is equivalent to about 50% of present telecommunications ADSL broadband, and bandwidth is 10 times of ADSL, is enough to satisfy the business demand of following several years.Ustomer premises access equipment can roll and drops into along with user's increase, can install as required, invest, and recovery of the capital has very strong predictable.

is that the RF signal of telecommunication of optical receiver module output outputs to hybrid circuit through NGB local side controller referring to accompanying drawing :NGB local side controller circuitry; optical network unit (ONU) outputting data signals is to NGB local side controller; arrive hfc plant through hybrid circuit output cable TV radiofrequency signal and data-signal, be transferred to each cable TV subscriber at last.Optical receiver delivery outlet 1 jointing IN1 input radio frequency signal; Joint IN1 is through electric capacity C2; The high-pass filtering circuit of electric capacity C2 output signal through forming by electric capacity CC1-CC7, inductance 1-L4; Output 47-862MHz radiofrequency signal is to electric capacity C1; To electric capacity C1, pass through joint OUT1 and arrive hfc plant by electric capacity C1 output mixed signal through the low-pass filter circuit outputting data signals is made up of electric capacity CC8-CC14, inductance 5-L9 for radio frequency seat J4 outputting data signals; Optical receiver delivery outlet 2 jointing IN2 input radio frequency signals; Joint IN2 is through electric capacity C4; The high-pass filtering circuit of electric capacity C4 output signal through forming by electric capacity CC15-CC21, inductance L10-L13; Output 47-862MHz radiofrequency signal is to electric capacity C3; To electric capacity C3, pass through joint OUT2 and arrive hfc plant by electric capacity C3 output mixed signal through the low-pass filter circuit outputting data signals is made up of electric capacity CC22-CC28, inductance L14-L18 for radio frequency seat J5 outputting data signals; Optical receiver delivery outlet 3 jointing IN3 input radio frequency signals; Joint IN3 is through electric capacity C6; The high-pass filtering circuit of electric capacity C6 output signal through forming by electric capacity CC29-CC35, inductance L19-L22; Output 47-862MHz radiofrequency signal is to electric capacity C5; To electric capacity C5, pass through joint OUT3 and arrive hfc plant by electric capacity C5 output mixed signal through the low-pass filter circuit outputting data signals is made up of electric capacity CC36-CC42, inductance L23-L27 for radio frequency seat J6 outputting data signals; Optical receiver delivery outlet 4 jointing IN4 input radio frequency signals; Joint IN4 is through electric capacity C8; The high-pass filtering circuit of electric capacity C8 output signal through forming by electric capacity CC43-CC49, inductance L28-L31; Output 47-862MHz radiofrequency signal is to electric capacity C7; To electric capacity C7, pass through joint OUT4 and arrive hfc plant by electric capacity C7 output mixed signal through the low-pass filter circuit outputting data signals is made up of electric capacity CC50-CC56, inductance L32-L36 for radio frequency seat J7 outputting data signals.When the user is small, optical network unit ONU, RJ? 1 port through the network cable EOC CO module 1, EOC CO module 1 output modulated data signal through the RF cable to connect the RF seat J1 JP1 input, RF seat J1 output data signal to the allocated input of the branch plug FP/FZ1 assigned branch plug FP/FZ1 an output terminal of the output data signal to the allocated input of the branch plug FP/FZ2 assigned branch plug FP/FZ2 an output of the output data signal to the radio base J4, distribution branch plug FP/FZ2 output terminal of the other data signals to a radio frequency base J5, distribution branch plug FP/FZ1 the other output terminal to the allocated data signal input of the branch plug FP/FZ3, Distribution Branch plug FP/FZ3 an output terminal of the output data signal to the radio base J6, distribution branch plug FP/FZ3 the other output terminal to the radio data signal seat J7.When the user more for a long time; The RJ1 of optical network unit ONU, 2 mouthfuls connect EOC local side module 1, EOC local side module 2 respectively by netting twine; Pull out distribution branch plug-in unit FP/FZ1; The data-signal of EOC local side module 1 output modulation; The input that connects radio frequency seat J2 by radio frequency line JP1; Radio frequency seat J2 outputting data signals is to the input of distribution branch plug-in unit FP/FZ2; The output outputting data signals of distribution branch plug-in unit FP/FZ2 is to radio frequency seat J4; Another output outputting data signals of distribution branch plug-in unit FP/FZ2 is to radio frequency seat J5; The data-signal of EOC local side module 2 output modulation; The input that connects radio frequency seat J3 by radio frequency line JP2; Radio frequency seat J3 outputting data signals is to the input of distribution branch plug-in unit FP/FZ3; The output outputting data signals of distribution branch plug-in unit FP/FZ3 is to radio frequency seat J6, and another output outputting data signals of distribution branch plug-in unit FP/FZ3 is to radio frequency seat J7.When the user completely covers; The RJ 1-4 mouth of optical network unit ONU connects EOC local side module 1-4 respectively through netting twine; Pull out the data-signal of distribution branch plug-in unit FP/FZ1-FP/FZ3 local side module 1 output modulation; The input that connects radio frequency seat J4 through radio frequency line JP1; Radio frequency seat J4 outputting data signals is to the data-signal of inductance L9 local side module 2 output modulation; The input that connects radio frequency seat J5 through radio frequency line JP2; Radio frequency seat J5 outputting data signals is to the data-signal of inductance L18 local side module 3 output modulation; Through the input of radio frequency line JP3 connection radio frequency seat J6, radio frequency seat J6 outputting data signals is to inductance L27, and EOC local side module 4 is exported the data-signal of modulation; Through the input of radio frequency line JP4 connection radio frequency seat J7, radio frequency seat J7 outputting data signals is to inductance L36; Joint AC60V IN, inductance 1L1-1L8, the electric socket CP1-CP8 of mistake, electric capacity C9-C29, discharge tube D1-D9 form interchange 60V feed and lightning prevention circuit, according to network design requirement, select the feed situation of the electric socket decision of corresponding mistake network.Wherein EOC local side module 1-4 be ethernet signal through modular assembly that is connected with the ethernet user through coaxial cable distribution net after the complex process such as modulation is that 75 Ω impedances, one sideband nut radio frequency line is that the threaded radio frequency seat of 75 Ω impedances is that distribution branch plug-in unit is that C60V interchange overcurrent inductance IN is high frequency capacitance for joint crosses electric socket for the C60V feed for discharge tube for air core inductor, and C1-C24 is the high pressure resistant Leaded Ceramic Disc Capacitor of high frequency, and C25-C29 is the high pressure resistant electric capacity of the dacron of high frequency.

are changed is the general trend of information network development.The transmission of a new generation's encoding and decoding technique all is based on the IP form, so the necessary IPization of front end, and front end IPization must drive the IPization of transmission network.The utility model is the two-way net equipment of a cable TV according to the up-to-date development of the NGB of SARFT(The State Administration of Radio and Television) television network broadcast requirement; Its inner integrated optical receiver module, the ONU module of transfer of data, EOC of CATV transmission; The head end module; Be EPON(Ethernet Passive Optical Network; Ethernet passive optical network) 1 product of the two-way net transformation of network technology, its following points technical advantage: <>

are noise collection effect 1.: the utility model has adopted HomePlug (plug-in alliance of family) AV technical standard; In this frequency range; 2351 number of sub-carrier have been divided; Each subcarrier takies and is about 24.414kHz; Adopt anti-interference stronger OFDM modulation system at present; In 2351 number of sub-carrier that its working frequency range uses; Each subcarrier all can carry out BPSK and 4096QAM modulation separately; Each subcarrier spectrum has 1/2 overlapping quadrature among the OFDM; Improved the availability of frequency spectrum of OFDM modulation system like this; Simultaneously adopt Turbo FEC error checking again, promoted the antijamming capability of system preferably.

2. provide the OLT equipment of very high bandwidth: EPON can transmit the 10G bandwidth at main line, and 32 ONU equipment of maximum support can better be supported future network construction and planning and development.The message transmission rate of NGB local side controller can reach 250-350M bps, is tens times of CMTS.

3. meet the IPization trend: at down direction; Adopted time-division multiplex technology (TDM), data-signal is broadcast to each terminal equipment, and the terminal can make a decision on physical layer voluntarily; Receive to give it self Frame, abandon the Frame that those give other terminal.At up direction; Adopt the EoCMA mode; In conjunction with advantage of traditional nothing management CSMA and TDMA utilized the simple and flexible property of CSMA; The assurance bandwidth of TDMA mode can be provided simultaneously; The generation that especially in multi-terminal network, can avoid conflict well, thus the entire system throughput improved.

4. cost is relatively low per family: can make full use of coaxial cable, branch distributor resource on the existing network, and the construction of need not registering one's residence, construction volume significantly reduces, and transformation speed is fast.But therefore cross-over connection subscriber's amplifier and trunk amplifier need not carry out the network rebuilding.Can " fix a point " to transform, can be that unit transforms with optical node even amplifier, flexible, thereby realize developing at a progressive speed.Adopt passive splitter to realize networking at the optical fiber Access Layer, fully save the fiber optic backbone resource.

Upgrade expanding 5. is convenient in : system has good professional expansion and network upgrade ability, and network can be expanded according to the growth of customer volume, and bandwidth also can smooth upgrade.The EPON system to the local side resource occupation seldom, the degree of modularity is high, system's initial stage drops into low, expansion easily, rate of return on investment is high.When the initial stage user more after a little while; Adopt 1 EOC local side module; Register one's residence bandwidth and the ever-increasing requirement of number of users along with integration of three networks broadcasting and TV NGB different phase; In equipment, increase EOC local side module; Can realize 4 EOC local side modules at most, guarantee that user's bandwidth is progressive from 5-10Mbps, 20-30Mbps, final 100Mbps.The EPON system is the technology that faces the future, and most of EPON system all is a multiple service platform, well selects for to the complete IP network transition being one.

6. fail safe, reliability height; Maintainable good: as downlink data to be adopted 128-bit AES coding encrypting, guarantee that each user isolates fully, for preventing that illegal ONU is connected to network and steals data; Need the authentication of ONU to authorize, guarantee legal ONU registration.The EPON system is two layers of switching system, is the safety of better guarantee user profile, and system supports Private VLAN to realize two layers of isolation, each user's that adequately protects information security.Can avoid the malicious attack of automatic network to cause user network congested at the specific broadcast packet filtering rule of definition, the broadcast packet control law be attacked through the broadcasting that the threshold value that defines broadcast packet filters out those malice, is that system and customer service keep stablizing.Adopt high-quality device, can adapt to outdoor high and low temperature applied environment.The inner EOC head end of the utility model is managed concentratedly user terminal, and very strong line diagnosis function is provided.

< > 7. QoS( <> Quality of Service, service quality) < > Guarantee: to different business such as Internet access to netwoks business, video on demand business, VoIP speech businesses; New generation product can be through the priority of automatic distinguishing different business such as VLAN sign or IP ToS; And can guarantee the professional preferential of high priority according to different user or cell scenario demand.

8, up-downgoing speed limit: to the difference of paying customer's grade, can set different flow restriction to the different brackets user, allocated bandwidth is flexible, serves guaranteed.

< > Wherein: <>

< > EPON: being ethernet passive optical network, is the best supporting body of CHINA RFTCOM Co Ltd digitlization, fiberize, IPization, and it is made up of ONT Optical Network Terminal (OLT), optical network unit (ONU), passive optical splitter (ODN); <>

< > OLT: be ONT Optical Network Terminal, responsible EPON system external resource is connected with the terminal use's, converges external business, coordinates far-end ONU, send " door message (Gates) " be used for distributing time slot to ONU; <>

< > ONU: be optical network unit, be responsible for user's access, professional covering, adopt " report message (Reports) " obtain time slot or ask time slot to OLT; <>

< > EOC: being ethernet coaxial cable transmission head end, is that ethernet signal is transferred to the ethernet user through coaxial cable distribution net after through complex process such as modulation <>

Claims

1. < > A kind of broadcasting and television network local side controller of future generation is characterized in that comprising EOC local side module 1-4; Radio frequency line JP1-JP4; Radio frequency seat J1-J7; Joint IN1-IN4 IN; Finger assignments plug-in unit FP/FZ1-FP/FZ3; Inductance L1-L36; Inductance 1L1-1L8; Cross electric socket CP1-CP8; Discharge tube D1-D9; Electric capacity C1-C29 and electric capacity CC1-CC56, the end of optical receiver delivery outlet 1 jointing IN1; Another termination capacitor C2 of joint IN1; Discharge tube D2; The end of inductance 1L2, the other end ground connection of discharge tube D2, another termination capacitor C11 of inductance 1L2; Cross the end of electric socket CP2; The other end ground connection of electric capacity C11, another termination inductance L4 of electric capacity C2; The end of electric capacity CC4, the other end ground connection of inductance L4; Another termination inductance L3 of electric capacity CC4; The end of electric capacity CC3, the end of another termination capacitor CC7 of inductance L3, the other end ground connection of electric capacity CC7; Another termination inductance L2 of electric capacity CC3; The end of electric capacity CC2; The end of another termination capacitor CC6 of inductance L2, the other end ground connection of electric capacity CC6, another termination inductance L1 of electric capacity CC2; The end of electric capacity CC1; The end of another termination capacitor CC5 of inductance L1; The other end ground connection of electric capacity CC5, another termination inductance L5 of electric capacity CC1; The end of electric capacity C1, another edge joint UT1 of electric capacity C1; The end of discharge tube D1; The end of inductance 1L1; The other end ground connection of discharge tube D1; Another termination capacitor C9 of inductance 1L1; Cross the end of electric socket CP1, the other end ground connection of electric capacity C9, the end of optical receiver delivery outlet 2 jointing IN2; Another termination capacitor C4 of joint IN2; Discharge tube D4; The end of inductance 1L4; The other end ground connection of discharge tube D4, another termination capacitor C15 of inductance 1L4; Cross the end of electric socket CP4, the other end ground connection of electric capacity C15; Another termination inductance L13 of electric capacity C4; The end of electric capacity CC18; The other end ground connection of inductance L13, another termination inductance L12 of electric capacity CC18; The end of electric capacity CC17, the end of another termination capacitor CC21 of inductance L12; The other end ground connection of electric capacity CC21; Another termination inductance L11 of electric capacity CC17; The end of electric capacity CC16, the end of another termination capacitor CC20 of inductance L11, the other end ground connection of electric capacity CC20; Another termination inductance L10 of electric capacity CC16; The end of electric capacity CC15; The end of another termination capacitor CC19 of inductance L10, the other end ground connection of electric capacity CC19, another termination inductance L14 of electric capacity CC15; The end of electric capacity C3; Another edge joint UT2 of electric capacity C3; Discharge tube D3; The end of inductance 1L3; The other end ground connection of discharge tube D3, another termination capacitor C13 of inductance 1L3; Cross the end of electric socket CP3, the other end ground connection of electric capacity C13; The end of optical receiver delivery outlet 3 jointing IN3; Another termination capacitor C6 of joint IN3; Discharge tube D6; The end of inductance 1L6, the other end ground connection of discharge tube D6, another termination capacitor C19 of inductance 1L6; Cross the end of electric socket CP6; The other end ground connection of electric capacity C19; Another termination inductance L22 of electric capacity C6; The end of electric capacity CC32, the other end ground connection of inductance L22, another termination inductance L21 of electric capacity CC32; The end of electric capacity CC31; The end of another termination capacitor CC35 of inductance L21; The other end ground connection of electric capacity CC35, another termination inductance L20 of electric capacity CC31; The end of electric capacity CC30, the end of another termination capacitor CC34 of inductance L20; The other end ground connection of electric capacity CC34; Another termination inductance L19 of electric capacity CC30; The end of electric capacity CC29, the end of another termination capacitor CC33 of inductance L19, the other end ground connection of electric capacity CC33; Another termination inductance L23 of electric capacity CC29; The end of electric capacity C5; Another edge joint UT3 of electric capacity C5; The end of discharge tube D5; The end of inductance 1L5, the other end ground connection of discharge tube D5, another termination capacitor C17 of inductance 1L5; Cross the end of electric socket CP5; The other end ground connection of electric capacity C17; The end of optical receiver delivery outlet 4 jointing IN4, another termination capacitor C8 of joint IN4; Discharge tube D8; The end of inductance 1L8, the other end ground connection of discharge tube D8; Another termination capacitor C23 of inductance 1L8; Cross the end of electric socket CP8; The other end ground connection of electric capacity C23, another termination inductance L31 of electric capacity C8; The end of electric capacity CC46, the other end ground connection of inductance L31; Another termination inductance L30 of electric capacity CC46; The end of electric capacity CC45; The end of another termination capacitor CC49 of inductance L30, the other end ground connection of electric capacity CC49, another termination inductance L29 of electric capacity CC45; The end of electric capacity CC44; The end of another termination capacitor CC48 of inductance L29; The other end ground connection of electric capacity CC48, another termination inductance L28 of electric capacity CC44; The end of electric capacity CC43, the end of another termination capacitor CC47 of inductance L28; The other end ground connection of electric capacity CC47; Another termination inductance L32 of electric capacity CC43; The end of electric capacity C7, another edge joint UT4 of electric capacity C7; Discharge tube D7; The end of inductance 1L7, the other end ground connection of discharge tube D7; Another termination capacitor C21 of inductance 1L7; Cross the end of electric socket CP7; The other end ground connection of electric capacity C21, the end of the termination inductance L9 of radio frequency seat J4, the end of another termination capacitor CC10 of inductance L9; Another termination inductance L8 of electric capacity CC10; The end of electric capacity CC9; The end of another termination capacitor CC14 of inductance L8, the other end ground connection of electric capacity CC14, another termination inductance L7 of electric capacity CC9; The end of electric capacity CC8; The end of another termination capacitor CC13 of inductance L7; The other end ground connection of electric capacity CC13, another termination inductance L6 of electric capacity CC8; The end of electric capacity CC11; The other end of inductance L5, the other end ground connection of electric capacity CC11; The end of another termination capacitor CC12 of inductance L6; The other end ground connection of electric capacity CC12, the end of the termination inductance L18 of radio frequency seat J5, the end of another termination capacitor CC24 of inductance L18; Another termination inductance L17 of electric capacity CC24; The end of electric capacity CC23; The end of another termination capacitor CC28 of inductance L17, the other end ground connection of electric capacity CC28, another termination inductance L16 of electric capacity CC23; The end of electric capacity CC22; The end of another termination capacitor CC27 of inductance L16; The other end ground connection of electric capacity CC27, another termination inductance L15 of electric capacity CC22; The end of electric capacity CC25; The other end of inductance L14, the other end ground connection of electric capacity CC25; The end of another termination capacitor CC26 of inductance L15; The other end ground connection of electric capacity CC26, the end of the termination inductance L27 of radio frequency seat J6, the end of another termination capacitor CC38 of inductance L27; Another termination inductance L26 of electric capacity CC38; The end of electric capacity CC37; The end of another termination capacitor CC42 of inductance L26, the other end ground connection of electric capacity CC42, another termination inductance L25 of electric capacity CC37; The end of electric capacity CC36; The end of another termination capacitor CC41 of inductance L25; The other end ground connection of electric capacity CC41, another termination inductance L24 of electric capacity CC36; The end of electric capacity CC39; The other end of inductance L23, the other end ground connection of electric capacity CC39; The end of another termination capacitor CC40 of inductance L24; The other end ground connection of electric capacity CC40, the end of the termination inductance L36 of radio frequency seat J7, the end of another termination capacitor CC52 of inductance L36; Another termination inductance L35 of electric capacity CC52; The end of electric capacity CC51; The end of another termination capacitor CC56 of inductance L35, the other end ground connection of electric capacity CC56, another termination inductance L34 of electric capacity CC51; The end of electric capacity CC50; The end of another termination capacitor CC55 of inductance L34; The other end ground connection of electric capacity CC55, another termination inductance L33 of electric capacity CC50; The end of electric capacity CC53; The other end of inductance L32, the other end ground connection of electric capacity CC53; The end of another termination capacitor CC54 of inductance L33; The other end ground connection of electric capacity CC54, joint AC60V IN takes over the other end of electric socket CP1-CP8; Discharge tube D9; The end of electric capacity C10, discharge tube D9; The other end ground connection of electric capacity C10; Radio frequency seat J4; The other end of J5 is connected with two outputs of distribution branch plug-in unit FP/FZ2 respectively; Radio frequency seat J6; The other end of J7 is connected with two outputs of distribution branch plug-in unit FP/FZ3 respectively, the end of the input termination radio frequency seat J2 of distribution branch plug-in unit FP/FZ2, the end of the input termination radio frequency seat J3 of distribution branch plug-in unit FP/FZ3; Radio frequency seat J2; The other end of J3 is connected with two outputs of distribution branch plug-in unit FP/FZ1 respectively; The input of distribution branch plug-in unit FP/FZ1 is connected with the end of radio frequency seat J1, and radio frequency line JP1-JP4 is connected with the output of EOC local side module 1-4 respectively, and radio frequency line JP1 connects the other end of radio frequency seat J1 <>