CN104469535A - Broadcast video IP method and device based on C-DOCSIS system - Google Patents
Broadcast video IP method and device based on C-DOCSIS system Download PDFInfo
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- CN104469535A CN104469535A CN201410692335.4A CN201410692335A CN104469535A CN 104469535 A CN104469535 A CN 104469535A CN 201410692335 A CN201410692335 A CN 201410692335A CN 104469535 A CN104469535 A CN 104469535A
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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
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/64—Addressing
- H04N21/6405—Multicasting
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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
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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
- H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
- H04N21/6168—Network physical structure; Signal processing specially adapted to the upstream 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
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/64322—IP
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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
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
- H04N21/64723—Monitoring of network processes or resources, e.g. monitoring of network load
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention provides a broadcast video IP method and device based on a C-DOCSIS system. All services can be achieved on a C-DOCSIS system platform and include the internet service, the video-on-demand service, the broadcast video IP service and others, the goal of integrating three networks is achieved, user networking can be simplified, and the network construction and maintaining cost can be reduced. By sufficiently utilizing the large bandwidth characteristic of CMC equipment, a broadcast video IP can be achieved on the C-DOCSIS system, and part of downlink frequency point resources are used for transmitting broadcast videos. In the process of networking through an optical line terminal, the broadcast videos are transmitted through multicasting so that the networking characteristic, from one point to multiple points, of the optical line terminal can be sufficiently utilized for saving bandwidth.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of method and device of the INVENTIONBroadcast video IPization based on C-DOCSIS system.
Background technology
At present, the INVENTIONBroadcast video business of broadcast TV market is mainly based on HFC (Hybrid Fiber Coaxial hybrid fiber coax) real-time performance.Vision signal passes through electro-optic conversion after QAM (quadrature amplitude modulation) modulation of front end system, optical node is transferred to through light-emitting device, after the optical receiver of optical node carries out opto-electronic conversion to light signal, then by the signal of cable TV by co-axial cables transport to each user terminal.The signal transmitted in hfc plant is analog signal.Data service based on hfc plant is realized by DOCSIS (Data Over Cable Service Interface Specifications data over cable service interface specification) system usually, comprises CMTS (the Cable Modem TerminalSystems Cable Modem Terminal System) system being positioned at headend room and Cable Modem (the i.e. CM cable modem) equipment and the Set Top Box STB (SetTop Box) (giving tacit consent to inner integrated CM) that are positioned at subscriber household.
Typical HFC group-network construction as shown in Figure 1.In traditional HFC group-network construction, utilize CMTS system and the cm device of DOCSIS technical system, adopt ITU-T J.122, the protocol architecture such as J.222, the broadband data transmission based on hfc plant can be realized.
China deploys DOCSIS system in part big and medium-sized cities, for developing two-way services.The integration of three networks is mutually merged by three macroreticulars such as cable television network, telecommunications network and computer network, network layer realizes interconnect, seamless coverage, operation layer interpenetrates and intersects, in application layer, trend uses unified IP agreement, thus formation adapts to extensively, the multimedia basics platform of the high-speed wideband of easy care, low expense.Under integration of three networks background, Broadcasting Cable Network needs to support traditional broadcast type television services, interactive television services and the data service of data class and the communication service etc. of voice class.For meeting the demand of miscellaneous service development better, the digitlization of CHINA RFTCOM Co Ltd and IPization seem extremely important, and some radio and TV operators or have considered the CHINA RFTCOM Co Ltd building all-IP.The important technical characteristic of the integration of three networks be various new business all using IP as bearing protocol, multi-service fusion framework is in IP agreement, and therefore as the broadcasting and television network of one of integration of three networks basic network, IPization also just becomes the inexorable trend of its development.
Along with the scale operation of integration of three networks business, cable television access network network demand fulfillment large bandwidth service bearer, there is multi-service QoS guarantee, renewable electricity, manageable Operational requirements.Traditional CMTS equipment price is expensive, if adopt traditional C MTS equipment to provide large bandwidth business, need constantly to divide optical node, reduce user's coverage, this will certainly cause the rising of network rebuilding cost.
Therefore, cable TV network operator innovatively proposes the coaxial broadband access technology in edge based on ITU-T J.222 serial protocols, J.122 this technology inherits, the technical advantage of J.222 serial protocols (also referred to as DOCSIS access system), meet the trend of network development of " light entering and copper back ", meet multiple services operation demand.Due to this be proposed by the Broadcast Television network operators of China based on the J.222 coaxial access technology in edge of agreement, therefore this technology is also referred to as C-DOCSIS technology.
The interface of the ITU-T physical layer and data link layer that originally belong to C-DOCSIS head end processing capacity is J.222 displaced downwardly to Cable TV Light Nodes from branch center machine room by C-DOCSIS access technology, pass downwardly through radio frequency interface to connect with coaxial cable distribution net network, be upwards connected with aggregation networks by PON or Ethernet.Networking model after moving down for interface, C-DOCSIS access technology needs again data between the functional module of canonical system and module and control interface, expansion ITU-T up-downgoing rf modulations technology J.222, simplify local channel technology, thus at guarantee and ITU-T J.122, J.222 while terminal equipment compatibility, can realize gigabit to building, 100,000,000 to register one's residence, carry the integrated service such as video, voice-and-data, there is large bandwidth service bearer, multi-service QoS guarantee, renewable electricity, manageable ability.
The integration of three networks is mutually merged by three macroreticulars such as cable television network, telecommunications network and computer network, network layer realizes interconnect, seamless coverage, operation layer interpenetrates and intersects, in application layer, trend uses unified IP (Internet Protocol) agreement, thus formation adapts to extensively, the multimedia basics platform of the high-speed wideband of easy care, low expense.Under integration of three networks background, Broadcasting Cable Network needs to support traditional broadcast type television services, interactive television services and the data service of data class and the communication service etc. of voice class.For meeting the demand of miscellaneous service development better, the digitlization of CHINA RFTCOM Co Ltd and IPization seem extremely important, and some radio and TV operators or have considered the CHINA RFTCOM Co Ltd building all-IP.The important technical characteristic of the integration of three networks be various new business all using IP as bearing protocol, multi-service fusion framework is in IP agreement, and therefore as the broadcasting and television network of one of integration of three networks basic network, IPization also just becomes the inexorable trend of its development.
As shown in Figure 1, in typical networking, usual video traffic comprises program request and INVENTIONBroadcast video is realized by edge QAM modulation equipment, and CMTS only realizes data service and program request signalling.Also some small part operator adopts IPization for order video business and INVENTIONBroadcast video business, utilizes CMTS completely to realize, and cancels the QAM modulation in networking.For realizing the high reliability of INVENTIONBroadcast video, operator can realize online and demand (telecommunication) service with a CMTS, an other independent CMTS realizes INVENTIONBroadcast video business, and this CMTS adopts static multicast technology to be exported toward the modulation of downlink frequency point by DOCSIS encapsulation by video traffic.Its group-network construction as shown in Figure 2.At the above-mentioned CMTS of utilization in the networking realizing INVENTIONBroadcast video IPization, two CMTS realizing INVENTIONBroadcast video and data service access can utilize one to realize.
C-DOCSIS is one of three standards of the NGB network access technique promulgated by SARFT(The State Administration of Radio and Television) at first, is absorbed afterwards and become the part of DOCSIS standard by Cablelabs.C-DOCSIS standard based on the distributed system architecture basis of DOCSIS defining applicable Chinese market, as shown in Figure 3.
Wherein CMC runs on optical node, mainly realizes MAC and the PHY layer function of DOCSIS.CMC user side is connected with CM by coaxial cable, network side by digital fiber as the digital transmission technologies such as PON, Ethernet are connected with CMC Controller.CMC Controller mainly realizes centralized management and the control of distributed deployment CMC, and the convergence of message, two layers or three layers of forwarding.CMCController is generally by realizations such as optical line terminal, switch or routers.
C-DOCSIS system has the advantage such as optical fiber and digital, high bandwidth low cost, the method realizing INVENTIONBroadcast video IPization based on C-DOCSIS system that this patent mainly describes.
Realize in INVENTIONBroadcast video method above-mentioned, the method adopting edge QAM modulation to realize live telecast needs to safeguard edge QAM equipment, in addition for meeting the extra CMTS system of data service needs, and video traffic does not realize IPization, the Long Term Evolution demand of the integration of three networks can not be met.Method unify video and the data service of INVENTIONBroadcast video is realized based on CMTS, achieve the IPization of all business, the demand of the integration of three networks can be met, but still adopt analog signal transmission in the Optical Fiber Transmission of head-end system to optical node, need to safeguard the devices such as light transmitting and light-receiving.
Summary of the invention
The present invention proposes a kind of method and device of the INVENTIONBroadcast video IPization based on C-DOCSIS system, basis based on C-DOCSIS system builds high performance complete IP network, realizes the IPization of broadcasting and TV INVENTIONBroadcast video (i.e. broadcast-type TV or live telecast).
Method provided by the invention is realize INVENTIONBroadcast video IPization based on the distributed structure/architecture of C-DOCSIS system, is included in collocation method CMC Controller and CMC realizing INVENTIONBroadcast video static multicast, and handling process during user's switching TV channel.
The invention provides a kind of device of the INVENTIONBroadcast video IPization based on C-DOCSIS system, described device comprises optical line terminal, optical fiber, optical splitter, described device also comprises some CMC equipment, described CMC equipment is connected by the CM that coaxial cable and Set Top Box are built-in, wherein, described optical line terminal receives IP video information and Internet information; Described optical line terminal is connected with described optical splitter by described optical fiber; Described optical splitter is connected with described some CMC equipment respectively; Described CMC equipment is positioned at the optical node of described optical splitter; Described CMC device interior integrated optical network unit is used for the first line of a couplet; Described CMC equipment is connected with STB equipment with cm device.
In such scheme preferably, described optical line terminal is used for the centralized management of service convergence and CMC equipment.
In such scheme preferably, the MAC of C-DOCSIS system described in described CMC integration of equipments and PHY layer function, for realizing the RF interface of coaxial side.
In such scheme preferably, described CMC equipment at least supports 16 down channels.
In such scheme preferably, described optical line terminal and described optical network unit adopt EPON, GPON and 10GEPON agreement.
, the built-in CM of described Set Top Box is DOCSIS3.0 CM in such scheme preferably, supports multiple frequency to receive and down channel binding.
In such scheme preferably, described part frequency is used for data and VoD business, and described other part frequency is for receiving INVENTIONBroadcast video.
In such scheme preferably, described optical line terminal and CMC adopt static multicast mode to INVENTIONBroadcast video.
Adopt the method for the INVENTIONBroadcast video IPization of foregoing device, the method for described INVENTIONBroadcast video IPization comprises the steps:
1) on optical line terminal, configuring static adds all INVENTIONBroadcast video multicast group, and these video flowings are sent to each CMC by static multicast.Meanwhile, optical line terminal configures a broadcast video transmission template for all CMC, in this template, define all INVENTIONBroadcast video multicast address needing CMC to forward, and forward the down channel collection of these INVENTIONBroadcast video;
2) when CMC reaches the standard grade, optical line terminal issues broadcast video transmission template configuration and sets up according to being configured in hardware forwarding plane the forwarding logic that INVENTIONBroadcast video multicast flows to down channel to CMC, CMC;
3) user's switching TV channel is to A;
4) described Set Top Box is searched multicast address B corresponding to described television channel A and is initiated IGMP JoinB;
5) CM that described Set Top Box is built-in is by described IGMP Join B message transmission;
6) described CMC equipment captures the information of described IGMP Join B, and judge whether multicast group B is INVENTIONBroadcast video static multicast, if described multicast group B is INVENTIONBroadcast video static multicast, then search the channel at described multicast group B place, relevant information is passed through the CM that described in DBC message informing, Set Top Box is built-in, if described multicast group B is not INVENTIONBroadcast video static multicast, then walk other normal multicast flow processs;
7) described cm device receives frequency collection according to described DBC message adjustment INVENTIONBroadcast video, receives the data flow of described multicast B and forwards;
8) muticast data transmission of user institute switching channels A presents to TV or other-end equipment by described Set Top Box.
As can be seen from the above technical solutions, embodiment provided by the invention can realize all business in C-DOCSIS system platform, comprise the IPization etc. of business of networking, VOD service and INVENTIONBroadcast video, meet integration of three networks overall goal, the network of all-IP more can adapt to following new business such as OTT etc. to be carried out.Meanwhile, method of the present invention can simplify user networking, reduces networking and maintenance cost.Whole network does not need the optical sender and optical receiver etc. of transmission of analogue signal.
Term " first ", " second ", " the 3rd " " 4th " etc. (if existence) in specification of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.The embodiments described herein should be appreciated that the data used like this can be exchanged in the appropriate case, so that can be implemented with the order except the content except here diagram or description.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
The above, above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Accompanying drawing explanation
Fig. 1 is the typical HFC group-network construction figure of prior art;
Fig. 2 is that the CMTS of prior art adopts static multicast technology to carry out modulating the group-network construction figure exported;
Fig. 3 is the distributed system architecture of the C-DOCSIS standard of prior art;
Fig. 4 is the group-network construction schematic diagram based on C-DOCSIS system of the embodiment of the present invention.
Embodiment
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
Below in conjunction with accompanying drawing, the method for the INVENTIONBroadcast video IPization based on C-DOCSIS system provided by the present invention and device are described further.
The described INVENTIONBroadcast video IPization method based on C-DOCSIS system can realize after INVENTIONBroadcast video IPization, C-DOCSIS system realizes all business of television network broadcast, comprises data service, speech business and video traffic.
Group-network construction based on C-DOCSIS system of the present invention as shown in Figure 4.In the networking shown in Fig. 4, optical line terminal realizes the function of the CMC controller in C-DOCSIS system, realize the centralized management of service convergence and CMC equipment.CMC equipment is positioned at optical node, and inner integrated ONU is used for the first line of a couplet, the in addition MAC of integrated C-DOCSIS system and the RF interface of the coaxial side of PHY layer functional realiey.According to C-DOCSIS system requirements, CMC at least can support 16 down channels.The agreements such as EPON, GPON and 10GEPON can be adopted between optical line terminal and ONU.For receiving data service and live television service simultaneously, the built-in CM of Set Top Box should be DOCSIS3.0 CM, and multifrequency point can be supported to receive and down channel binding, some of them frequency is used for data and VoD business, and other frequency is for receiving INVENTIONBroadcast video.
For realizing INVENTIONBroadcast video IPization, optical line terminal receives the broadcast video program from Video service source from network side, each broadcast video program IGMP multicast group.For improving efficiency during user's switching channels, optical line terminal and CMC adopt static multicast mode to INVENTIONBroadcast video.On optical line terminal, configuring static adds all INVENTIONBroadcast video multicast group, and these video flowings are sent to each CMC by static multicast.Meanwhile, optical line terminal configures a broadcast video transmission template for all CMC, in this template, define all INVENTIONBroadcast video multicast address needing CMC to forward, and forward the down channel collection of these INVENTIONBroadcast video.When CMC reaches the standard grade, optical line terminal issues broadcast video transmission template configuration and sets up according to being configured in hardware forwarding plane the forwarding logic that INVENTIONBroadcast video multicast flows to down channel to CMC, CMC.
Based on the device of above-mentioned INVENTIONBroadcast video IPization, when user watches live telecast or switching channels, the step of corresponding INVENTIONBroadcast video IPization method is as follows:
1) user's switching TV channel is to A;
2) Set Top Box is searched multicast address B corresponding to television channel A and is initiated IGMP Join B;
3) the built-in CM of Set Top Box is by IGMP Join transparent transmission;
4) CMC captures IGMP Join B information, judges whether multicast group B is INVENTIONBroadcast video static multicast, then searches the channel at its place in this way, by relevant information by the built-in CM of DBC message informing Set Top Box;
5) CM receives frequency collection according to DBC message adjustment INVENTIONBroadcast video, and the data flow of receiving group B also forwards;
6) muticast data transmission of user institute switching channels A presents to TV or other-end by Set Top Box;
Based on above configuration and flow process, radio and TV operator not only can realize data service based on C-DOCSIS distributed system, can also realize INVENTIONBroadcast video business.Optical line terminal described in above method also can be switch or the router of integrated CMC Controller, and the connection between itself and CMC can be fiber optic Ethernet.
Key point of the present invention is realize INVENTIONBroadcast video IPization based on the distributed structure/architecture of C-DOCSIS system, is included in collocation method CMC Controller and CMC realizing INVENTIONBroadcast video static multicast, and handling process during user's switching TV channel.
C-DOCSIS system platform can realize all business, comprise the IPization etc. of business of networking, VOD service and INVENTIONBroadcast video, meet integration of three networks overall goal, the network of all-IP more can adapt to following new business such as OTT etc. to be carried out.Meanwhile, method of the present invention can simplify user networking, reduces networking and maintenance cost.Whole network does not need the optical sender and optical receiver etc. of transmission of analogue signal.
C-DOCSIS system realizes the large bandwidth characteristic that INVENTIONBroadcast video IPization can make full use of CMC equipment, utilizes the descending frequency resource of part for the transmission of INVENTIONBroadcast video.In the networking of application optical line terminal, utilize multicast can make full use of the point-to-multipoint attributes of network of optical line terminal to transmit INVENTIONBroadcast video, save bandwidth.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. various can be program code stored medium.
Claims (9)
1. the device based on the INVENTIONBroadcast video IPization of C-DOCSIS system, described device comprises optical line terminal, optical fiber, optical splitter, it is characterized in that, described device also comprises some CMC equipment, described CMC equipment is connected by the CM that coaxial cable and Set Top Box are built-in
Wherein, described optical line terminal receives IP video information and Internet information;
Described optical line terminal is connected with described optical splitter by described optical fiber;
Described optical splitter is connected with described some CMC equipment respectively;
Described CMC equipment is positioned at the optical node of described optical splitter;
Described CMC device interior integrated optical network unit is used for the first line of a couplet;
Described CMC equipment is connected with STB equipment with cm device.
2. the device of INVENTIONBroadcast video IPization as claimed in claim 1, is characterized in that, described optical line terminal is used for the centralized management of service convergence and CMC equipment.
3. the device of INVENTIONBroadcast video IPization as claimed in claim 1, is characterized in that, the MAC of C-DOCSIS system described in described CMC integration of equipments and PHY layer function, for realizing the RF interface of coaxial side.
4. the device of INVENTIONBroadcast video IPization as claimed in claim 3, it is characterized in that, described CMC equipment at least supports 16 down channels.
5. the device of INVENTIONBroadcast video IPization as claimed in claim 1, is characterized in that, described optical line terminal and described optical network unit adopt EPON, GPON and 10GEPON agreement.
6. the device of INVENTIONBroadcast video IPization as claimed in claim 1, is characterized in that, the built-in CM of described Set Top Box is DOCSIS3.0CM, supports multiple frequency to receive and down channel binding.
7. the device of INVENTIONBroadcast video IPization as claimed in claim 6, is characterized in that, described part frequency is used for data and VoD business, and described other part frequency is for receiving INVENTIONBroadcast video.
8. the device of INVENTIONBroadcast video IPization as claimed in claim 1, is characterized in that, described optical line terminal and CMC adopt static multicast mode to INVENTIONBroadcast video.
9. adopt the method for the INVENTIONBroadcast video IPization of device according to claim 1, it is characterized in that, the method for described INVENTIONBroadcast video IPization comprises the steps:
1) on optical line terminal, configuring static adds all INVENTIONBroadcast video multicast group, and these video flowings are sent to each CMC by static multicast, simultaneously, optical line terminal configures a broadcast video transmission template for all CMC, in this template, define all INVENTIONBroadcast video multicast address needing CMC to forward, and forward the down channel collection of these INVENTIONBroadcast video;
2) when CMC reaches the standard grade, optical line terminal issues broadcast video transmission template configuration and sets up according to being configured in hardware forwarding plane the forwarding logic that INVENTIONBroadcast video multicast flows to down channel to CMC, CMC;
3) user's switching TV channel is to A;
4) described Set Top Box is searched multicast address B corresponding to described television channel A and is initiated IGMP JoinB;
5) CM that described Set Top Box is built-in is by described IGMP Join B transparent transmission;
6) described CMC equipment captures the information of described IGMP Join B, and judge whether multicast group B is INVENTIONBroadcast video static multicast, if described multicast group B is INVENTIONBroadcast video static multicast, then search the channel at described multicast group B place, relevant information is passed through the CM that described in DBC message informing, Set Top Box is built-in;
7) described cm device receives frequency collection according to described DBC message adjustment INVENTIONBroadcast video, receives the data flow of described multicast B and forwards;
8) muticast data transmission of user institute switching channels A presents to TV or other-end equipment by described Set Top Box.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Cited By (10)
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| CN106302013A (en) * | 2016-08-12 | 2017-01-04 | 成都广达新网科技股份有限公司 | A kind of desktop system testing CMC basic service and method of work |
| CN106302013B (en) * | 2016-08-12 | 2019-06-18 | 成都广达新网科技股份有限公司 | A kind of desktop system and working method for testing CMC basic service |
| WO2018072077A1 (en) * | 2016-10-18 | 2018-04-26 | 华为技术有限公司 | Data transmission method and related device |
| CN108234357A (en) * | 2016-12-15 | 2018-06-29 | 鼎点视讯科技有限公司 | Flux of multicast distribution method and system |
| CN108234357B (en) * | 2016-12-15 | 2021-07-16 | 鼎点视讯科技有限公司 | Multicast traffic distribution method and system |
| CN111371597A (en) * | 2020-02-26 | 2020-07-03 | 江苏建筑职业技术学院 | Fusion type network management realization method and system for grid management |
| CN111343198A (en) * | 2020-04-03 | 2020-06-26 | 广西广播电视信息网络股份有限公司 | System and method for realizing broadcast video IP based on multicast VLAN technology |
| CN111654760A (en) * | 2020-05-06 | 2020-09-11 | 上海云则信息技术有限公司 | VOD video interactive on-demand method and system |
| CN113163499A (en) * | 2021-06-02 | 2021-07-23 | 浙江一诺机电有限公司 | Spectrometer test data transmission method and system based on wireless communication |
| CN113163499B (en) * | 2021-06-02 | 2022-04-12 | 浙江一诺机电有限公司 | Spectrometer test data transmission method and system based on wireless communication |
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