CN104104991A - Digitalized sending, receiving and transmitting methods and systems for comprehensive services in HFC - Google Patents
Digitalized sending, receiving and transmitting methods and systems for comprehensive services in HFC Download PDFInfo
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Abstract
The invention provides digitalized sending, receiving and transmitting methods and systems for comprehensive services in an HFC. The transmitting system includes a live video program source which provides live video data streams; a video server and digital content manager, which is connected with the live video program source to convert the live video data streams into IP data packets; an OLT unit that sends the IP data packets which include the live video program source to an IP network; ONUs which receive the IP data packets sent by the OLT unit; IPQAM devices which carry out IPQAM modulation on the IP data packets which include the live video data streams so as to obtain digital television radio frequency signals; EoC household gateways which receive and forward the digital television radio frequency signals through a coaxial cable; and coaxial-cable set top boxes which convert the digital television radio frequency signals into television display signals. The digitalized sending, receiving and transmitting methods and systems for the comprehensive services in the HFC realize full-digitalization IP transmission of the comprehensive services which include live television signals and an analog program source on a light copper mixed network and cancel all analog transmission devices so that network complexity is reduced and transmission QoS is ensured.
Description
Technical field
The invention belongs to IP integrated service technical field, be specifically related to digitlization transmission, reception, transmission method and the system of a kind of integrated service in HFC.
Background technology
Flourish along with IP technology, the flexibility of IP has obtained sufficient demonstration, and the value-added service of developing in IP network constantly increases.Utilize IP network to unify carry voice traffic, data service, video traffic and will following telecom operators be brought to revolutionary variation, the blank of IP integrated services network (IP integrated service network) is clear gradually.NGN(Next Generation Network, next generation network) be IP-based brand-new integrated network, on NGN Unified Network platform, can converged communication, the business such as information, ecommerce, amusement, realize interactive dream.NGN concept taking soft switch and packet-switch technology as core is once proposition, and Ge great telecom operators just take up to carry out the construction of next generation network.The novel voice, data, the image co-registration business that emerge in an endless stream not only will change the operation mode of operator, more will change the mode of people's life.
At present, the Liang great operator telecommunications of China and broadcasting and TV have the IP integrated services network of oneself.As shown in Figure 1, this network comprises machine room end 110 and client 120 to the IP Integrated Services Transmission network of telecommunications, and the IPTV signal of machine room end 110 is transferred to client 120 by Ethernet 130 at (comprising the vision signal of Internet data and program request).Wherein, machine room end 110 is provided with Internet data source 111, video server and digital content management device 112 and OLT113; The vision signal that the Internet data that Internet data source 111 is exported and video server and digital content management device 112 are exported all sends on Ethernet 130 through OLT113 with the form of IPTV packet; Client 120 comprises to be located at the ONU121 in corridor and to be arranged at home gateway 122 and the IPTV Set Top Box 123 in user family; Wherein, ONU121 is connected with Ethernet 130, the IPTV packet that receiving house end 110 transmits by Ethernet 130; Home gateway 122 is connected with ONU121, and IPTV Set Top Box 123 is connected with home gateway 122, and IPTV Set Top Box 123 converts IPTV packet to TV signal and plays back.Owing to 122 being home networks to IPTV Set Top Box 123 this section of networks again from ONU121 to home gateway, the QoS(Quality of Service of IP network (being netting twine), service quality) as the not guarantee such as time delay, shake, transmission channel is also subject to the interference of the various signals of telecommunication simultaneously, is very difficult to the high-quality transmission of video flowing especially high definition video steaming.In addition, described video server and digital content management device 112 are order video server and digital content management device, machine room end 110 does not comprise live video program source, so telecommunications can not realize the function of live television programming, this is mainly because live video stream need to take at least transmission bandwidth more than 1G, and the bandwidth of registering one's residence of client 120 (being the bandwidth of netting twine) is generally in about 8-10M, be what cannot receive up to live video stream more than 1G.
The IP Integrated Services Transmission network of broadcasting and TV as shown in Figure 2, this network comprises machine room end 210 and client 220, the Internet data of machine room end 210 are transferred to client 220 by first network 230, and the vision signal of the program request of machine room end 210 and live vision signal are transferred to client 220 by second network 240.Wherein, machine room end 210 is provided with Internet data source 211, order video server and digital content management device 212, live video program source 213, OLT214, an IPQAM215, the 2nd IPQAM216 and light modulation amplifier 217; The Internet data that Internet data source 211 is exported send on first network 230 through OLT214 with the form of packet; The order video signal that order video server and digital content management device 212 are exported is modulated to transmission on second network 240 through an IPQAM215 and light modulation amplifier 217; Flow through the 2nd IPQAM216 and light modulation amplifier 217 of the live video that live video program source 213 is exported is modulated to transmission on second network 240.Client 220 comprises ONU/EoC221 and the optical receiver 222 of being located in corridor and is arranged at EoC home gateway 223 and the coaxial line Set Top Box 224 in user family; Wherein, ONU/EoC221 is connected with first network 230, the packet that receiving house end 210 transmits by first network 230; Optical receiver 222 is connected with second network 240, order video signal and live video signal that receiving house end 210 transmits by second network 240; EoC home gateway 223 is connected respectively with optical receiver 222 with described ONU/EoC221 by coaxial line, and described packet, order video signal and live video signal are all transferred to EoC home gateway 223 by coaxial line; EoC home gateway 223 is processed packet; The coaxial line Set Top Box 224 being connected with EoC home gateway 223 converts described order video signal and live video signal to TV signal and plays back.An i.e. IPQAM215 and the 2nd IPQAM216 of IPQAM() use be the special frequency range of high frequency of coaxial line, be difficult for being disturbed; The time delay of IPQAM is simultaneously fixed, IP network relatively, and its QoS is secure, and transmission high definition video steaming tool is had great advantage.In addition, it utilizes coaxial line also to solve the networking problem of subscriber household network, makes home network signals stable, is difficult for being disturbed.But because the IPQAM signal of telecommunication of this network generates at machine room, must be modulated to certain optical band (as 1550nm) just can make to use up and be transferred to corridor optical node, analogue transmission from the IPQAM of machine room end to the transmission means of this section of corridor optical node of client, increase the complexity of network, controllability, flexibility and the reliability of network are affected, and for increasing the transmission range of analog optical signal, sometimes also need casacade multi-amplifier, both wasted energy, increased again the maintenance cost of network.
Realize the totally digitilized IP transmission of IP integrated service, just must carry out IP Digital Transmission to live telecast signal, and in prior art, live telecast signal is to transmit in the mode of simulation by simulated light transceiver.Taking 200 high-definition programs as example, each high-definition program is the flow rate calculation of 8Mbps on demand, the total flow of live telecast signal can reach 1.6Gbps, if so large flow is sent to user terminal or corridor optical node (delivering to user terminal by IPQAM again) reception, prior art cannot be accomplished.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide digitlization transmission, reception, transmission method and the system of a kind of integrated service in HFC, cannot realize the problem of whole Digital Transmissions for solving prior art integrated service.
For achieving the above object and other relevant objects, the invention provides digitlization transmission, reception, transmission method and the system of a kind of integrated service in HFC.
The digitlization sending method of described integrated service in HFC comprises: convert live video data flow to IP Packet Generation to IP network.
Preferably, the digitlization sending method of described integrated service in HFC also comprises:
By Internet IP Packet Generation to IP network;
Convert order video data flow to IP Packet Generation to IP network;
Convert analog program source to IP Packet Generation to IP network.
The digitlization method of reseptance of described integrated service in HFC comprises:
Receive IP packet from IP network;
The IP packet that comprises live video data flow and the IP packet that comprises order video data flow are carried out to IPQAM modulation and obtain digital television radio-frequency signal; Internet IP packet is carried out to EoC and process acquisition EoC radiofrequency signal; The IP packet that comprises analog program source is carried out to digital-to-analogue conversion and obtain analog signal;
Utilize coaxial line by described digital television radio-frequency signal, described EoC radiofrequency signal and described analog signal transmission to EoC home gateway, so that described EoC home gateway is processed described EoC radiofrequency signal and the coaxial line Set Top Box that is connected with described EoC home gateway converts described digital television radio-frequency signal and described analog signal to TV display.
The digitalized transmission method of described integrated service in HFC comprises:
Convert live video data flow to IP Packet Generation to IP network;
Receive IP packet from IP network;
The IP packet that comprises live video data flow is carried out to IPQAM modulation and obtain digital television radio-frequency signal;
Utilize coaxial line that described digital television radio-frequency signal is transferred to coaxial line Set Top Box and convert TV display to.
Preferably, the digitalized transmission method of described integrated service in HFC also comprises:
All convert order video data flow and analog program source to IP Packet Generation to IP network;
By Internet IP Packet Generation to IP network;
Receive IP packet from IP network;
The IP packet that comprises live video data flow and the IP packet that comprises order video data flow are carried out to IPQAM modulation and obtain digital television radio-frequency signal; Described Internet IP packet is carried out to EoC and process acquisition EoC radiofrequency signal; The IP packet that comprises analog program source is carried out to digital-to-analogue conversion and obtain analog signal;
Utilize coaxial line by described digital television radio-frequency signal, described EoC radiofrequency signal and described analog signal transmission to EoC home gateway, so that described EoC home gateway is processed described EoC radiofrequency signal and the coaxial line Set Top Box that is connected with described EoC home gateway converts described digital television radio-frequency signal and described analog signal to TV display.
Preferably, the digitlization transmitting system of described integrated service in HFC also comprises: Internet router, analog-to-digital conversion and IP encapsulation unit; Described Internet router is connected with described OLT unit, Internet IP packet is provided in case described OLT unit by described Internet IP Packet Generation to IP network; Described video server and digital content management device provide the IP that comprises order video data flow packet, so as described OLT unit by the IP Packet Generation that comprises order video data flow to IP network; Described analog-to-digital conversion and IP encapsulation unit are connected with described OLT unit, analog program source is carried out to analog-to-digital conversion and is packaged into IP packet so that described OLT unit by the IP Packet Generation that comprises analog program source to IP network; Described OLT unit is 10G OLT unit.
The digitlization receiving system of described integrated service in HFC comprises: ONU unit, EoC head-end unit, IPQAM equipment, D/A conversion unit, EoC home gateway, coaxial line Set Top Box; Described ONU unit receives the IP packet that OLT unit sends; Described EoC head-end unit is connected with described ONU unit, Internet IP packet is carried out to EoC and process acquisition EoC radiofrequency signal; Described IPQAM equipment is connected with described ONU unit, the IP packet that comprises live video data flow and the IP packet that comprises order video data flow is carried out to IPQAM modulation and obtain digital television radio-frequency signal; Described D/A conversion unit is connected with described ONU unit, the IP packet that comprises analog program source is carried out to digital-to-analogue conversion and obtain analog signal; Described EoC home gateway is connected respectively with described D/A conversion unit with described IPQAM equipment, described EoC head-end unit by coaxial line, receives and process described EoC radiofrequency signal, forwards described digital television radio-frequency signal and described analog signal; Described coaxial line Set Top Box is connected with described EoC home gateway, converts described digital television radio-frequency signal and described analog signal to TV display.
The Digital Transmission system of described integrated service in HFC comprises: live video program source, video server and digital content management device, OLT unit, ONU unit, IPQAM equipment, EoC home gateway, coaxial line Set Top Box; Described live video program source provides live video data flow; Described video server and digital content management device are connected with described live video program source, convert described live video data flow to IP packet; Described OLT unit is connected with described video server and digital content management device, by the described IP Packet Generation that comprises live video program source to IP network; Described ONU unit receives the IP packet that OLT unit sends; Described IPQAM equipment is connected with described ONU unit, the IP packet that comprises live video data flow is carried out to IPQAM modulation and obtain digital television radio-frequency signal; Described EoC home gateway is connected with described IPQAM equipment by coaxial line, receives and process described EoC radiofrequency signal, forwards described digital television radio-frequency signal; Described coaxial line Set Top Box is connected with described EoC home gateway, converts described digital television radio-frequency signal to TV display.
Preferably, the Digital Transmission system of described integrated service in HFC also comprises: Internet router, analog-to-digital conversion and IP encapsulation unit, EoC head-end unit, D/A conversion unit; Described Internet router is connected with described OLT unit, Internet IP packet is provided in case described OLT unit by described Internet IP Packet Generation to IP network; Described video server and digital content management device provide the IP that comprises order video data flow packet, so as described OLT unit by the IP Packet Generation that comprises order video data flow to IP network; Described analog-to-digital conversion and IP encapsulation unit are connected with described OLT unit, analog program source is carried out to analog-to-digital conversion and is packaged into IP packet so that described OLT unit by the IP Packet Generation that comprises analog program source to IP network; Described EoC head-end unit is connected with described ONU unit, described Internet IP packet is carried out to EoC and process acquisition EoC radiofrequency signal; Described IPQAM equipment carries out IPQAM modulation to the IP packet that comprises order video data flow and obtains digital television radio-frequency signal; Described D/A conversion unit is connected with described ONU unit, the IP packet that comprises analog program source is carried out to digital-to-analogue conversion and obtain analog signal; Described EoC home gateway is connected respectively with described D/A conversion unit with described EoC head-end unit by coaxial line, receives and processes described EoC radiofrequency signal and forward described digital television radio-frequency signal and described analog signal; Described coaxial line Set Top Box converts described digital television radio-frequency signal and described analog signal to TV display.
As mentioned above, digitlization transmission, reception, transmission method and the system of integrated service of the present invention in HFC, has following beneficial effect:
The present invention has realized the totally digitilized IP transmission of the IP integrated service including live telecast signal, be IP integrated service from the get home whole digitlizations of transmitting procedure in front yard of machine room, both ensured the QoS of IP Integrated Services Transmission, and made again the whole transport network architecture of IP integrated service simple, flexibly.
Brief description of the drawings
Fig. 1 is the structural representation of the IP Integrated Services Transmission network of existing telecommunications.
Fig. 2 is the structural representation of the IP Integrated Services Transmission network of existing broadcasting and TV.
Fig. 3 is the schematic flow sheet of the digitlization sending method of integrated service of the present invention in HFC.
Fig. 4 is the schematic flow sheet of the digitlization method of reseptance of integrated service of the present invention in HFC.
Fig. 5 is the schematic flow sheet of the digitalized transmission method of integrated service of the present invention in HFC.
Fig. 6 is the structural representation of the digitlization transmitting system of integrated service of the present invention in HFC.
Fig. 7 is the structural representation of the digitlization receiving system of integrated service of the present invention in HFC.
Fig. 8 is the structural representation of the Digital Transmission system of integrated service of the present invention in HFC.
Element numbers explanation
110,210 machine room ends
111,211 Internet data sources
112, video server
113、214 OLT
212 order video servers
213 live video program source
215 the one IPQAM
216 the one IPQAM
217 light modulation amplifiers
120,220 clients
121 ONU
122 home gateways
123 IPTV Set Top Box
130 Ethernets
230 first networks
240 second networks
221 ONU/EoC
222 optical receivers
223 EoC home gateways
224 DVB-C Set Top Box
601,801 live video program source
602,802 Internet routers
603,803 video servers and digital content management device
604,804 OLT unit
605,805 analog-to-digital conversion and IP encapsulation unit
701,806 ONU unit
705,807 EoC head-end unit
702,808 IPQAM equipment
706,809 D/A conversion units
703,810 EoC home gateways
704,811 coaxial line Set Top Box
Embodiment
Below, by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this specification.The present invention can also be implemented or be applied by other different embodiment, and the every details in this specification also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present invention.
Refer to accompanying drawing.It should be noted that, the diagram providing in the present embodiment only illustrates basic conception of the present invention in a schematic way, satisfy and only show with assembly relevant in the present invention in graphic but not component count, shape and size drafting while implementing according to reality, when its actual enforcement, kenel, quantity and the ratio of each assembly can be a kind of random change, and its assembly layout kenel also may be more complicated.
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.
Embodiment
The present embodiment provides a kind of integrated service at HFC(Hybrid Fiber-Coaxial, hybrid fiber coax) in digitlization sending method, as shown in Figure 3, the digitlization sending method of described integrated service in HFC comprises:
All convert live video data flow, order video data flow and analog program source to IP Packet Generation to IP network;
By Internet IP Packet Generation to IP network.
Further, preferably Ethernet of described IP network.
The present embodiment also provides the digitlization method of reseptance of a kind of integrated service in HFC, and as shown in Figure 4, the digitlization method of reseptance of described integrated service in HFC comprises:
Receive IP packet from IP network;
The IP packet that comprises live video data flow and the IP packet that comprises order video data flow are carried out to IPQAM modulation and obtain digital television radio-frequency signal; Internet IP packet is carried out to EoC and process acquisition EoC radiofrequency signal; The IP packet that comprises analog program source is carried out to digital-to-analogue conversion and obtain analog signal;
Utilize coaxial line by described digital television radio-frequency signal, described EoC radiofrequency signal and described analog signal transmission to EoC home gateway, so that described EoC home gateway is processed described EoC radiofrequency signal and the coaxial line Set Top Box that is connected with described EoC home gateway converts described digital television radio-frequency signal and described analog signal to TV display.
The present embodiment also provides the digitalized transmission method of a kind of integrated service in HFC, and as shown in Figure 5, the digitalized transmission method of described integrated service in HFC comprises:
All convert live video data flow, order video data flow and analog program source to IP Packet Generation to IP network;
By Internet IP Packet Generation to IP network;
Receive IP packet from IP network;
The IP packet that comprises live video data flow and the IP packet that comprises order video data flow are carried out to IPQAM modulation and obtain digital television radio-frequency signal; Described Internet IP packet is carried out to EoC and process acquisition EoC radiofrequency signal; The IP packet that comprises analog program source is carried out to digital-to-analogue conversion and obtain analog signal;
Utilize coaxial line by described digital television radio-frequency signal, described EoC radiofrequency signal and described analog signal transmission to EoC home gateway, so that described EoC home gateway is processed described EoC radiofrequency signal and the coaxial line Set Top Box that is connected with described EoC home gateway converts described digital television radio-frequency signal and described analog signal to TV display.
The present embodiment also provides the digitlization transmitting system of a kind of integrated service in HFC, this transmitting system can realize the digitlization sending method of integrated service of the present invention in HFC, but the system that realizes of the digitlization sending method of integrated service of the present invention in HFC is not limited to integrated service described in the present embodiment digitlization transmitting system in HFC.As shown in Figure 6, the digitlization transmitting system of described integrated service in HFC comprises: live video program source 601, Internet router 602, video server and digital content management device 603, OLT unit 604, analog-to-digital conversion and IP encapsulation unit 605; Described live video program source 601 provides live video data flow; Internet router 602 provides Internet IP packet; Video server and digital content management device 603 are connected with described live video program source, convert described live video data flow to IP packet, and the IP that comprises order video data flow packet is provided, video server and digital content management device provide video IP bag; Analog-to-digital conversion and IP encapsulation unit 605 carry out analog program source analog-to-digital conversion and are packaged into IP packet; OLT unit 604 is connected respectively with analog-to-digital conversion and IP encapsulation unit 605 with Internet router 602, video server and digital content management device 603, by described Internet IP packet, described in comprise live video data flow IP packet, described in comprise order video data flow IP packet and described in comprise analog program source IP Packet Generation to IP network.Described OLT unit 604 is preferably 10G OLT.The digitlization transmitting system of described integrated service in HFC is arranged in machine room conventionally.
The present embodiment also provides the digitlization receiving system of a kind of integrated service in HFC, this receiving system can realize the digitlization method of reseptance of integrated service of the present invention in HFC, but the system that realizes of the digitlization method of reseptance of integrated service of the present invention in HFC is not limited to integrated service described in the present embodiment digitlization receiving system in HFC.As shown in Figure 7, the digitlization receiving system of described integrated service in HFC comprises: ONU unit 701, IPQAM equipment 702, EoC home gateway 703, coaxial line Set Top Box 704, EoC head-end unit 705, D/A conversion unit 706.Described ONU unit 701 receives the IP packet that OLT unit sends, and receives the IP packet from IP network; Wherein said IP packet comprise Internet IP packet, described in comprise live video data flow IP packet, described in comprise order video data flow IP packet and described in comprise analog program source IP packet.Described ONU unit 701 is preferably 10G ONU.EoC head-end unit 705 is connected with described ONU unit 701, Internet IP packet is carried out to EoC and process acquisition EoC radiofrequency signal; EoC head-end unit 705 is modulated into EoC radiofrequency signal and delivers on coaxial line the every other data flow (including but not limited to Internet data of the present invention) beyond live and order video stream and analog program source; EoC head-end unit receives the up radiofrequency signal of EoC from coaxial line simultaneously, and up EoC radiofrequency signal is carried out to demodulation forms IP packet, then by IP Packet Generation to ONU; Be that EoC head-end unit is responsible for the conversion between EoC radiofrequency signal and the IP packet on coaxial line.IPQAM equipment 702 is connected with described ONU unit 701, the IP packet that comprises live video data flow forwarding through described ONU unit 701 and the IP packet that comprises order video data flow are carried out to IPQAM modulation and obtain digital television radio-frequency signal, and described digital television radio-frequency signal is sent on coaxial line; D/A conversion unit 706 is connected with described ONU unit 701, the IP packet that comprises analog program source is carried out to digital-to-analogue conversion and obtain analog signal, and analog signal is sent on coaxial line; EoC home gateway 703 is connected respectively with described IPQAM equipment 702, described EoC head-end unit 705 and described D/A conversion unit 706 by coaxial line, receives and process described EoC radiofrequency signal, forwards described digital television radio-frequency signal and described analog signal.EoC home gateway 703 is just simple forwards digital television radio-frequency signal, and the processing of digital television radio-frequency signal and conversion all complete in coaxial line Set Top Box 704.EoC home gateway 703 can be also other coaxial line family gateway equipments, as DOCSIS terminal equipment.Coaxial line Set Top Box 704 is connected with described EoC home gateway 703, converts the digital television radio-frequency signal and the analog signal that forward through described EoC home gateway to TV display.Described ONU unit 701, EoC head-end unit 705, D/A conversion unit 706 and IPQAM equipment 702 can be arranged in corridor conventionally; Described EoC home gateway 703 and coaxial line Set Top Box 704 are arranged in home dwelling conventionally.
The present embodiment also provides the Digital Transmission system of a kind of integrated service in HFC, this transmission system can realize the digitalized transmission method of integrated service of the present invention in HFC, but the system that realizes of the digitalized transmission method of integrated service of the present invention in HFC is not limited to integrated service described in the present embodiment Digital Transmission system in HFC.As shown in Figure 8, the Digital Transmission system of described integrated service in HFC comprises: live video program source 801, Internet router 802, video server and digital content management device 803, OLT unit 804, analog-to-digital conversion and IP encapsulation unit 805, ONU unit 806, EoC head-end unit 807, IPQAM equipment 808, D/A conversion unit 809, EoC home gateway 810, coaxial line Set Top Box 811.Described live video program source 801, Internet router 802, video server and digital content management device 803, OLT unit 804, analog-to-digital conversion and IP encapsulation unit 805 are arranged in machine room conventionally.Described ONU unit 806, EoC head-end unit 807, IPQAM equipment 808, D/A conversion unit 809 are arranged in corridor or building conventionally.Described EoC home gateway 810, coaxial line Set Top Box 811 are arranged in home dwelling conventionally.
Wherein, live video program source 801 provides live video data flow; Internet router 802 provides Internet IP packet; Video server and digital content management device 803 are connected with described live video program source 801, convert described live video data flow to IP packet, and the IP that comprises order video data flow packet is provided, video server and digital content management device provide video IP bag; Analog-to-digital conversion and IP encapsulation unit 805 carry out analog program source analog-to-digital conversion and are packaged into IP packet; OLT unit 804 is connected respectively with analog-to-digital conversion and IP encapsulation unit 805 with Internet router 802, video server and digital content management device 803, and described Internet IP packet, the IP packet that comprises live video data flow, the IP packet that comprises order video data flow and the IP packet that comprises analog program source are all sent on IP network.Described Internet IP packet, the IP packet that comprises live video data flow, the IP packet that comprises order video data flow and the IP packet that comprises analog program source can be referred to as IP packet.Described ONU unit 806 receives the IP packet that OLT unit 804 sends, and receives the IP packet from IP network; EoC head-end unit 807 is connected with described ONU unit 806, described Internet IP packet is carried out to EoC and process acquisition EoC radiofrequency signal; EoC head-end unit 807 is modulated into EoC radiofrequency signal and delivers on coaxial line the every other data flow (including but not limited to Internet data of the present invention) beyond live and order video stream and analog program source; EoC head-end unit receives the up radiofrequency signal of EoC from coaxial line simultaneously, and up EoC radiofrequency signal is carried out to demodulation forms IP packet, then by IP Packet Generation to ONU; Be that EoC head-end unit is responsible for the conversion between EoC radiofrequency signal and the IP packet on coaxial line.IPQAM equipment 808 is connected with described ONU unit 806, the IP packet that comprises live video data flow forwarding through described ONU unit 806 and the IP packet that comprises order video data flow are carried out to IPQAM modulation and obtain digital television radio-frequency signal, and described digital television radio-frequency signal is sent on coaxial line; D/A conversion unit 809 is connected with described ONU unit 806, the IP packet that comprises analog program source is carried out to digital-to-analogue conversion and obtain analog signal, and analog signal is sent on coaxial line; EoC home gateway 810 is connected respectively with described IPQAM equipment 808, described EoC head-end unit 807 and described D/A conversion unit 809 by coaxial line, receives and process described EoC radiofrequency signal, forwards described digital television radio-frequency signal and described analog signal.EoC home gateway 810 is just simple forwards digital television radio-frequency signal, and the processing of digital television radio-frequency signal and conversion all complete in coaxial line Set Top Box 811.EoC home gateway 810 can be also other coaxial line family gateway equipments, as DOCSIS terminal equipment.Coaxial line Set Top Box 811 is connected with described EoC home gateway 810, converts the digital television radio-frequency signal and the analog signal that forward through described EoC home gateway to TV display.Described ONU unit 806, EoC head-end unit 807, D/A conversion unit 809 and IPQAM equipment 808 can be arranged in corridor conventionally; Described EoC home gateway 810 and coaxial line Set Top Box 811 are arranged in home dwelling conventionally.Described OLT unit 804 is preferably 10G OLT, and corresponding described ONU unit 806 is preferably 10G ONU.
In the present invention, at transmitting terminal (or claiming machine room end), no matter be video flowing (comprising live video data flow, order video data flow or analog program source) or Internet data transaction becomes after IP packet, what it was transferred to from machine room that optical node (from OLT unit to ONU unit) adopts is complete IP network transmission; At receiving terminal (or claiming family's end), IP packet first carries out modulation conversion by IPQAM equipment, realize video flowing and be transferred to home videos terminal (being home gateway and Set Top Box) from optical node by coaxial line, what this process adopted is coaxial line transmission, and modulation demodulation system is coaxial line digitlization.
Digitlization transmission, reception, transmission method and the system of integrated service of the present invention in HFC realized the totally digitilized IP transmission of the IP integrated service including live telecast signal, be IP integrated service from the get home whole digitlizations of transmitting procedure in front yard of machine room, both ensured the QoS of IP Integrated Services Transmission, make again the whole transport network architecture of IP integrated service simple, flexibly.Although the cost of existing IPQAM equipment is very high, but the present invention has adopted IPQAM equipment, IPQAM equipment is that existing IPQAM equipment is carried out to chip processing, greatly reduces production cost, so also can not make network cost greatly increase even join an IPQAM equipment at each optical node.What traditional IPQAM cost was higher is mainly because adopted FPGA, although the IPQAM that adopts FPGA to realize is easy to change, cost is certainly too high, is not suitable for in the present invention.And IPQAM equipment of the present invention is to adopt IC to realize IPQAM, greatly reduce the cost of IPQAM.
The present invention adopts 10G-PON transmission of video (certainly, along with development the present invention in the future is not confined to adopt the transmission bandwidth of 10G-PON yet, the bandwidth that is OLT and ONU can further expand), cancel simulation ray machine, realize the totally digitilized IP transmission in fiber-coaxial line (being called for short light copper) hybrid network (HFC) of the integrated service including live telecast signal and analog program source, transmit more reliable, the all analog transmission facilities in current light copper hybrid network are cancelled, greatly simplify the complexity of network, both ensured the QoS of transmission, make again whole transport network architecture simple and flexible, be easy to maintenance and management.
In addition, the present invention moves down into IPQAM after optical node together with EoC head-end unit, and IPQAM realizes by chip, and volume is little, and power consumption is little, and cost is low; Live/order video stream every other service traffics in addition that EoC has solved; But also take full advantage of coaxial line resource, and make the Set Top Box of user side not need any change, coaxial line has enough bandwidth to register one's residence, and can substantially solve the problem of home network.
In sum, the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-described embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (10)
1. the digitlization sending method of integrated service in HFC, is characterized in that, the digitlization sending method of described integrated service in HFC comprises: convert live video data flow to IP Packet Generation to IP network.
2. the digitlization sending method of integrated service according to claim 1 in HFC, is characterized in that, the digitlization sending method of described integrated service in HFC also comprises:
By Internet IP Packet Generation to IP network;
Convert order video data flow to IP Packet Generation to IP network;
Convert analog program source to IP Packet Generation to IP network.
3. the digitlization method of reseptance of integrated service in HFC, is characterized in that, the digitlization method of reseptance of described integrated service in HFC comprises:
Receive IP packet from IP network;
The IP packet that comprises live video data flow and the IP packet that comprises order video data flow are carried out to IPQAM modulation and obtain digital television radio-frequency signal; Internet IP packet is carried out to EoC and process acquisition EoC radiofrequency signal; The IP packet that comprises analog program source is carried out to digital-to-analogue conversion and obtain analog signal;
Utilize coaxial line by described digital television radio-frequency signal, described EoC radiofrequency signal and described analog signal transmission to EoC home gateway, so that described EoC home gateway is processed described EoC radiofrequency signal and the coaxial line Set Top Box that is connected with described EoC home gateway converts described digital television radio-frequency signal and described analog signal to TV display.
4. the digitalized transmission method of integrated service in HFC, is characterized in that, the digitalized transmission method of described integrated service in HFC comprises:
Convert live video data flow to IP Packet Generation to IP network;
Receive IP packet from IP network;
The IP packet that comprises live video data flow is carried out to IPQAM modulation and obtain digital television radio-frequency signal;
Utilize coaxial line that described digital television radio-frequency signal is transferred to coaxial line Set Top Box and convert TV display to.
5. the digitalized transmission method of integrated service according to claim 4 in HFC, is characterized in that, the digitalized transmission method of described integrated service in HFC also comprises:
All convert order video data flow and analog program source to IP Packet Generation to IP network;
By Internet IP Packet Generation to IP network;
Receive IP packet from IP network;
The IP packet that comprises live video data flow and the IP packet that comprises order video data flow are carried out to IPQAM modulation and obtain digital television radio-frequency signal; Described Internet IP packet is carried out to EoC and process acquisition EoC radiofrequency signal; The IP packet that comprises analog program source is carried out to digital-to-analogue conversion and obtain analog signal;
Utilize coaxial line by described digital television radio-frequency signal, described EoC radiofrequency signal and described analog signal transmission to EoC home gateway, so that described EoC home gateway is processed described EoC radiofrequency signal and the coaxial line Set Top Box that is connected with described EoC home gateway converts described digital television radio-frequency signal and described analog signal to TV display.
6. the digitlization transmitting system of integrated service in HFC, is characterized in that, the digitlization transmitting system of described integrated service in HFC comprises:
Live video program source, provides live video data flow;
Video server and digital content management device, be connected with described live video program source, converts described live video data flow to IP packet;
OLT unit, is connected with described video server and digital content management device, by the described IP Packet Generation that comprises live video program source to IP network.
7. the digitlization transmitting system of integrated service according to claim 6 in HFC, is characterized in that, the digitlization transmitting system of described integrated service in HFC also comprises:
Internet router, is connected with described OLT unit, Internet IP packet is provided in case described OLT unit by described Internet IP Packet Generation to IP network;
Described video server and digital content management device provide the IP that comprises order video data flow packet, so as described OLT unit by the IP Packet Generation that comprises order video data flow to IP network;
Analog-to-digital conversion and IP encapsulation unit, be connected with described OLT unit, analog program source is carried out to analog-to-digital conversion and is packaged into IP packet so that described OLT unit by the IP Packet Generation that comprises analog program source to IP network;
Described OLT unit is 10G OLT unit.
8. the digitlization receiving system of integrated service in HFC, is characterized in that, the digitlization receiving system of described integrated service in HFC comprises:
ONU unit, receives the IP packet that OLT unit sends; Described IP packet comprises Internet IP packet, the IP packet that comprises live video data flow, the IP packet that comprises order video data flow and the IP packet that comprises analog program source;
EoC head-end unit, is connected with described ONU unit, Internet IP packet is carried out to EoC and process acquisition EoC radiofrequency signal;
IPQAM equipment, is connected with described ONU unit, the IP packet that comprises live video data flow and the IP packet that comprises order video data flow is carried out to IPQAM modulation and obtain digital television radio-frequency signal;
D/A conversion unit, is connected with described ONU unit, the IP packet that comprises analog program source is carried out to digital-to-analogue conversion and obtain analog signal;
EoC home gateway, is connected respectively with described D/A conversion unit with described IPQAM equipment, described EoC head-end unit by coaxial line, receives and process described EoC radiofrequency signal, forwards described digital television radio-frequency signal and described analog signal;
Coaxial line Set Top Box, is connected with described EoC home gateway, converts described digital television radio-frequency signal and analog signal to TV display.
9. the Digital Transmission system of integrated service in HFC, is characterized in that, the Digital Transmission system of described integrated service in HFC comprises:
Live video program source, provides live video data flow;
Video server and digital content management device, be connected with described live video program source, converts described live video data flow to IP packet;
OLT unit, is connected with described video server and digital content management device, by the described IP Packet Generation that comprises live video program source to IP network;
ONU unit, receives the IP packet that OLT unit sends;
IPQAM equipment, is connected with described ONU unit, the IP packet that comprises live video data flow is carried out to IPQAM modulation and obtain digital television radio-frequency signal;
EoC home gateway, is connected respectively with described D/A conversion unit with described IPQAM equipment, described EoC head-end unit by coaxial line, receives and process described EoC radiofrequency signal, forwards described digital television radio-frequency signal;
Coaxial line Set Top Box, is connected with described EoC home gateway, converts described digital television radio-frequency signal to TV display.
10. the Digital Transmission system of integrated service according to claim 9 in HFC, is characterized in that, the Digital Transmission system of described integrated service in HFC also comprises:
Internet router, is connected with described OLT unit, Internet IP packet is provided in case described OLT unit by described Internet IP Packet Generation to IP network;
Described video server and digital content management device provide the IP that comprises order video data flow packet, so as described OLT unit by the IP Packet Generation that comprises order video data flow to IP network;
Analog-to-digital conversion and IP encapsulation unit, be connected with described OLT unit, analog program source is carried out to analog-to-digital conversion and is packaged into IP packet so that described OLT unit by the IP Packet Generation that comprises analog program source to IP network;
EoC head-end unit, is connected with described ONU unit, described Internet IP packet is carried out to EoC and process acquisition EoC radiofrequency signal;
Described IPQAM equipment carries out IPQAM modulation to the IP packet that comprises order video data flow and obtains digital television radio-frequency signal;
D/A conversion unit, is connected with described ONU unit, the IP packet that comprises analog program source is carried out to digital-to-analogue conversion and obtain analog signal;
Described EoC home gateway is connected respectively with described D/A conversion unit with described EoC head-end unit by coaxial line, receives and processes described EoC radiofrequency signal and forward described digital television radio-frequency signal and described analog signal;
Described coaxial line Set Top Box converts described digital television radio-frequency signal and described analog signal to TV display;
Described OLT unit is 10G OLT unit, and described ONU is 10G ONU.
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| CN104104991B (en) | 2018-02-06 |
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