CN102130805A - Fusion access-oriented multi-service terminal system - Google Patents
Fusion access-oriented multi-service terminal system Download PDFInfo
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Abstract
The invention discloses a fusion access-oriented multi-service terminal system which belongs to the technical field of radio over fiber (RoF) and FMC (Fixed Mobile Convergence) network fusion. The system comprises a network and a multi-service terminal, wherein the network is based on a PON (Passive Optical Network) technology; a network background accesses the multi-service terminal; and by adopting the multi-service terminal system and a RoF technology method, transmission of uplink information and downlink information can be completed. By adopting the system, a resource sharing, system-compatible and network fusion multi-information operating platform is established for a multi-service terminal user. The multi-service terminal user can select networks and services as required, fusion of services such as communication, television, net surfing and the like is completed once an optical fiber is accessed, fusion of a wired transmission mode and a wireless transmission mode can be completed, and the user and an operator can make different options flexibly according to different requirements and service qualities.
Description
Technical field
The present invention relates under a kind of optical fiber access conditions, realize towards the multi-service integrated terminal system that merges access, specifically is a kind of towards merging the multi-service terminal system that inserts, and belongs to optical fiber radio and FMC network integration technical field.
Background technology
The network system framework of next generation network (NGN) is the focal point of industry always, it is open, merge, unified control, be the extensive approval that the theory of core has obtained industry with IP, it is core that target makes up exactly with IMS, support plurality of access modes, the opening of hierarchy, the network of fusion.The network integration is exactly in the access service that multiple mode is provided, and core net adopts unified optical-fiber network, promptly has the hierarchical architecture of unified IP carrying and unified professional control.Merging the multi-service terminal can allow the user switch between different networks easily.NGN is the ultimate aim of FMC development, and the purpose of FMC is to use the family to pass through different access networks, enjoys identical service, obtains identical business.It is irrelevant with access point and terminal that its developing direction is exactly user's business of subscribing to, and just allows the user from fixing or portable terminal uses same business by any suitable access point.FMC will satisfy the user under the prerequisite of a terminal, a bill, use fixed network to communicate in office or family, and out of doors, then communicate by radio/mobile network.FMC has also comprised such notion simultaneously, is exactly between fixed network and mobile network, and terminal can seamless roam.For the user, mean simple and convenience, carry out the flexible of different choice according to demand.
Along with the innovation of the fast development of scientific and technological progress, information industry and relevant policies with implement, trend is consistent on the high-level business application technology, can realize on the network layer interconnecting.For operator, realize that the FMC technology can satisfy the demand of different fused business by the fusion of network different aspects, a certain fused business may comprise multiple integration technology.Lay simply in view of Wi-Fi Hotspot, transmission is stable, and advantages such as technical standard merge Wi-Fi wireless transmission and IP-based wire transmission, can finish this towards the multi-service integrated terminal that merges access.The wire and wireless unification can make the user flexibly carry out different selection according to different demands with service quality with operator.
In addition, publication number is CN101242461, and the patent of invention that name is called " integrated access terminal under a kind of FTTH condition " is known.This patent utilization WDM technology is carried on two wavelength with the digital television business of DVB standard with based on the IP operation of EPON protocol transmission, utilizes other the 3rd wavelength to finish the transmission of upward signal.Connecting system is for the audio/video business, support two kinds of business models of DVB, IPTV and TV and two kinds of display terminals of personal computer, made full use of DVB, IPTV two kinds of video traffics advantage and characteristics of having separately as display terminal of television set and personal computer separately, it can also utilize the EPON host-host protocol to finish the access of the professional and VoIP business of Internet.Although this patent has certain advantage, it does not finish FMC, does not relate to the fusion of fixed network and wireless network, can not satisfy the specific demand of the outdoor mobile reception business of user etc.
Summary of the invention
Sunken and not enough at existing in prior technology, the invention provides a kind of under the optical fiber access conditions, realization is towards merging the multi-service integrated terminal system that inserts, be a kind of towards merging the multi-service terminal system that inserts, on the known technology basis, carry on the PON framework based on IP operation, the FMC that utilizes the RoF technology to finish wireless network and cable network merges, to satisfy the specific demand of the outdoor mobile reception business of user etc.
Technical scheme of the present invention is as follows:
A kind of towards merging the multi-service terminal system that inserts, comprise network and multi-service terminal, network is based on the PON technology, the multi-service terminal is inserted at the network rear, wherein multi-service terminal mainly comprises RoF optical transceiver module, frequency division multiplexing/demultiplexing module, Wi-Fi processing unit, IP data processing unit and Wi-Fi antenna, it is characterized in that the RoF optical transceiver module is connected with frequency division multiplexing/demultiplexing module; Frequency division multiplexing/demultiplexing module is connected with the IP data processing unit with the Wi-Fi processing unit respectively; The Wi-Fi processing unit is connected with the Wi-Fi antenna; The RoF optical transceiver module comprises an optical fiber input interface and an optical fiber output interface, be connected with 1550nm Optical Receivers and 1310nm light emission module respectively, signal descending, the uplink port of two interfaces, downlink port optical signal carrier wavelength is 1550nm, and uplink port optical signal carrier wavelength is 1310nm; The RoF optical transceiver module also includes photoelectricity/electrooptic conversion module, descending, up signal can be carried out photoelectricity/electric light conversion; The IP data processing unit comprises ether Switching Module, FPGA module, IPTV decoding coprocessor, analog audio-video encoder, RJ-45 interface module, VoIP coder/decoder and RJ-11 module; The ether Switching Module is connected with FPGA module, RJ-45 interface module and VoIP coder/decoder respectively, finishes Service Switching Function; Connect IPTV decoding coprocessor after the FPGA module, connect the analog audio-video encoder behind the IPTV decoding coprocessor to finish analog video signal output; Connect the RJ-11 module behind the VoIP coder/decoder and finish the output of VoIP signal; The Wi-Fi processing unit comprises coupler, wave detector, Wi-Fi signal processing, Rx/Tx diverter switch, the Wi-Fi signal processing part is tapped at frequency division multiplexing/demultiplexing module back, its back connects the Rx/Tx diverter switch, and Rx/Tx diverter switch back links with the Wi-Fi antenna; Coupler obtains coupled power from frequency division multiplexing/demultiplexing module output circuit, after connect wave detector, the wave detector output is connected with the Rx/Tx diverter switch with control Rx/Tx diverter switch;
Network mainly comprises IP network, ordering server, network management system, OLT, wdm system, ODN and multi-service terminal, and wherein the OLT front end links to each other with IP network, ordering server and network management system; The OLT back links to each other with wdm system, and wdm system links to each other with ODN, and ODN links to each other with the multi-service terminal; OLT comprises IP operation transceiver part, Wi-Fi package module, frequency division multiplexing/demultiplexing module and photoelectricity/electrooptic conversion module; Be connected with frequency division multiplexing/demultiplexing module jointly after wherein the IP operation transceiver part is connected with the Wi-Fi package module; Be connected with photoelectricity/electrical to optical converter after frequency division multiplexing/demultiplexing module.
Described OLT is the abbreviation of English optical line terminal, looks like to be optical fiber cable termination equipment, is used to connect the terminal equipment of fiber optic backbone.
Described wdm system is meant wavelength-division multiplex system.
Described ROF is the abbreviation of English radio-over-fiber, looks like to be that light carrier radio communication, ROF technology are to answer the high-speed high capacity wireless communication needs, the emerging wireless access technology that optical fiber communication and radio communication are combined that grows up.
Described PON is the abbreviation of English Passive Optical Network, looks like to be passive optical-fiber network.
Described ODN is based on the FTTH fiber cable network of PON equipment, and its effect is for providing transmission line between OLT and the ONU.
The function and the signal flow of each module of the present invention are as follows: the RoF optical transceiver module comprises an input port and an output port, input port receives the 1550nm optical wavelength, the radiofrequency signal behind carrying Wi-Fi radiofrequency signal and the gigabit ether signal frequency division multiplexing.The uplink port optical wavelength of RoF optical transceiver module is 1310nm.At down direction, the signal of telecommunication of RoF optical transceiver module after with opto-electronic conversion is sent to frequency division multiplexing/demultiplexing module, finishes the descending demultiplexing of 2.4GHz radiofrequency signal and gigabit ether signal then.For gigabit ether signal, send into the IP data processing unit after behind the demultiplexing; And the Wi-Fi radiofrequency signal is sent into the Wi-Fi processing module.The Wi-Fi radiofrequency signal enters the Wi-Fi processing module, at down direction, the Wi-Fi radiofrequency signal is carried out the filtering and the power amplification of clutter, is transported to the Wi-Fi antenna signal is launched, and finishes the covering of Wi-Fi signal to wireless terminal.Receive the Wi-Fi antenna at up direction and transmit signal, the low noise of finishing signal amplifies, and is delivered to frequency division multiplexing/demultiplexing module.In view of the time-division property of Wi-Fi agreement, the Wi-Fi processing module adds the coupler power detector in access place of Wi-Fi aerial signal and finishes separating of Wi-Fi radio-frequency receiving-transmitting signal with the RF diverter switch.Enter the Wi-Fi antenna part after the signal processing, finish of the covering of the Wi-Fi signal of 2.4GHz frequency range wireless terminal.Wireless terminal can be finished the comprehensive access of IPTV, Internet data and VOIP business by the WLAN local area network (LAN).
Gigabit ether signal enters the IP data processing unit, is finished by the ether Switching Module exchange of the IPTV, Internet data and the VOIP business that are packaged into Ether frame is handled.The IPTV business is sent into later video processing unit by the FPGA processing; The Internet data service is connected with subscriber computer by the RJ-45 interface, finishes the access of data service; The VoIP business is sent into the VoIP codec, be connected with the subscriber household phone, finish the access of speech business by RJ-11.
System of the present invention adopts built-in Linux operating system, and the Bootloader procedure stores is in BOOT ROM, and memory devices such as Flash, SDRAM are used for the storage of complete operation system kernel, system application and data file.Serial port module is debugging and the programming that is used for system program.Adopt in the digital television business widely used condition to receive (CA) technology to carry out access control for audio frequency and video are professional, support the authentification of user function, by with management functions such as the mutual realization user's of IPTV system access control, charging.
The use of FPGA module is for the IPTV business is sent in the audio/video decoding unit, for the IPTV business from the EPON special module, sends in the IPTV decoding processor of video decodes such as supporting MPEG, WMV and Real, finishes the decoding of IPTV business.And for the interactive upward signals such as program request order that the terminal use sends over, also be to deliver in the EPON special module through the FPGA module, finish further processing.
Among the present invention, to realize the optical fiber access conditions based on the network architecture of PON technology, system equipment mainly comprises: optical link unit (OLT) is equivalent to the local side apparatus of PON network.On down direction, OLT is used for the reception of miscellaneous services such as IPTV in backbone network/metropolitan area network, Internet and VoIP.And finish ether signal Wi-Fi protocol encapsulation, on the service bearer 1550nm wavelength with IP behind radiofrequency signal and the ether signal frequency division multiplexing, finish descending transmission.On up direction, OLT is responsible for each connecting system and distributes ascending time slot, and handles the various data messages of the up transmission of multi-service terminal equipment;
A kind ofly use above-mentioned multi-service terminal system, utilize the RoF technology to finish the method for downlink transfer information, step is as follows:
A, OLT unit receive from the miscellaneous service based on the IP agreement in backbone/metropolitan area network, part ether signal is carried out the Wi-Fi protocol encapsulation, radiofrequency signal after the encapsulation and ether signal frequency division multiplexing, carry with the 1550nm optical wavelength, IPTV, Internet and VoIP etc. transmit with a wavelength with two kinds of signal modes like this;
B, downlink optical signal utilize the shunt function of ODN unit, and downstream signal is sent to each user terminal;
C, downstream signal comprise in the processing procedure that inserts the multi-service terminal:
Be converted to the signal of telecommunication behind C1, the photoelectric conversion unit receiving optical signals, send into frequency division multiplexing/demultiplexing module;
C2, frequency division multiplexing/demultiplexing module are sent the gigabit ether signal of bearer IP service into the IP data processing unit after signal of telecommunication demultiplexing is gone out 2.4GHz radiofrequency signal and gigabit ether signal, and the Wi-Fi signal of 2.4GHz frequency range is sent into the Wi-Fi processing module;
After C3, IP data processing unit are finished protocol processes to the IPTV business, Internet business and the VoIP business that are encapsulated as the EPON frame, the IPTV business is sent into the audio-video signal processing unit, equally by user's simulated television terminal, finish the broadcast of IPTV business afterwards;
C4, user utilize the RJ-45 interface to finish the access of Internet business by personal computer, can also finish the broadcast of IPTV business in addition by the software decode technology;
C5, VoIP are professional to be connected with subscriber phone by RJ-11 through the decoding back, finishes the descending access of speech business;
Be delivered to the Wi-Fi antenna after C6, Wi-Fi processing module are handled the 2.4GHz radiofrequency signal and finish the IP operation wireless coverage.
A kind ofly use above-mentioned multi-service terminal system, utilize the RoF technology to finish the method for uplink information, step is as follows:
1) at first finish following processing by the multi-service terminal:
1., for TV user, upward signals such as its video request program by the response of the DVB master chip of audio frequency and video processing unit, are sent into the IP data processing unit, are packaged into the EPON frame.Send into frequency division multiplexing/demultiplexing module;
2., for personal computer user, its upward signal is sent into the IP data processing unit through the RJ-45 mouth, is packaged into the EPON frame equally.Send into frequency division multiplexing/demultiplexing module;
3., for the voip user, its upward signal is sent into the VoIP encoder through RJ-11, finishing coding back and being packaged into the EPON frame by the IP data processing unit, sends into frequency division multiplexing/demultiplexing module;
4., send into frequency division multiplexing/demultiplexing module for the upward signal process Wi-Fi processing module processing of Wi-Fi antenna input;
2) 2.4GHz radiofrequency signal and gigabit ether signal carry out the electric light conversion after frequency division multiplexing/demultiplexing module is finished frequency division multiplexing, finish up transmission with the 1310nm wavelength;
3) after the ODN unit receives the uplink optical signal that sends according to different time-gap from each multi-service terminal, it is finished time division multiplexing, send to the OLT unit then;
4) the OLT unit is after receiving user's upstream data, for up Wi-Fi agreement radiofrequency signal at first deblocking dress up the ether signal, after for example VoIP, Internet business are finished protocol processes to data then, send in metropolitan area/backbone network, carry out the route of next jumping; Then send in the vod server for the video request program command information.
Light path allocation units (ODN) utilize optical branching device passive devices such as (Splitter), and downstream signal is carried out shunt, send to user's multi-service terminal equipment, and finish the multiplexing of user uplink signal, pass back to the OLT unit;
Multi-service terminal: finish the reception of downlink optical signal, and carry out the processing of corresponding IP operation.Protocol processes, the electricity/light conversion of user uplink signal finished in up aspect and the fixedly time slot that distributes in the OLT unit carries out up transmission.
The multi-service terminal is for the various IP operation of PON network architecture carrying, finish frequency division demultiplexing after the opto-electronic conversion by photoelectric conversion unit to carrying this professional 1550nm wavelength, after the IP data processing unit is finished protocol processes to the IPTV business, Internet business and the VoIP business that are packaged into the EPON frame, the IPTV business is sent into the audio-video signal processing unit, equally by user's simulated television terminal, finish the broadcast of IPTV business afterwards; Simultaneously the IP data processing unit also can send user's personal computer to by the RJ-45 interface through the IPTV business after the protocol processes, utilizes the software decode technology of computer to finish the broadcast of IPTV business.Can also finish the access of data services such as Internet in addition by the RJ-45 interface;
For the VoIP business of removing after the EPON frame encapsulates, at first decode through decoder, be connected with subscriber phone by RJ-11 then, finish the descending access of voice service.
The Wi-Fi processing module is handled the back to the 2.4GHz radiofrequency signal and is finished wireless coverage by the Wi-Fi antenna.
Transmission for professional up interactive signal such as video request program (VOD), Internet and VoIP, the processing procedure of multi-service terminal is: for TV user, upward signals such as its video request program are responded by the audio frequency and video processing unit, send into the IP data processing unit, be packaged into the EPON frame.After finishing electric light conversion by photoelectric conversion module again with up radiofrequency signal frequency division multiplexing, carry out up transmission;
For personal computer user, its upward signal is sent into the IP data processing unit through the RJ-45 mouth, is packaged into the EPON frame equally.After finishing electric light conversion by photoelectric conversion module again with up radiofrequency signal frequency division multiplexing, carry out up transmission; For the voip user, its upward signal is sent into the VoIP encoder through RJ-11, finishes the coding back and is packaged into the EPON frame by the IP data processing unit, after changing through electric light with up radiofrequency signal frequency division multiplexing, finishes up transmission again.
For the wireless terminal upward signal, after frequency division multiplexing/demultiplexing module and gigabit ether signal frequency division multiplexing are sent in processing through the Wi-Fi processing module by the input of Wi-Fi antenna, through the electric light conversion, finish up transmission again.
For supporting terminal uses wireless and the two kind of twisted-pair feeder transmission mode, access for business can be selected transmission mode flexibly, comparatively speaking, the speed that the Wi-Fi transmission is supported is up to tens Mbps, and the transmission rate of gigabit ether signal is up to hundreds of Mbps.So, recommend to use the cable transmission pattern for pursuit to service quality.And when pursuing the access way flexibility, recommend to use wireless communication mode.
The present invention has created many information operatings operation platform of a resource-sharing, system compatible, the network integration for the terminal use.The terminal use can select network and business with need, as long as incoming fiber optic is promptly finished integrated services such as communication, TV, online and can be finished wired wireless transmission mode fusion of arriving, can make the user carry out different selections according to different demands flexibly with service quality with operator.
Description of drawings
Fig. 1 is the structural representation of multi-service terminal of the present invention, wherein: 1, optical fiber output interface; 2, optical fiber input interface; 3,1310nm light emission module; 4,1550nm Optical Receivers; 5, frequency division multiplexing/demultiplexing module; 6, ether Switching Module; 7, FPGA module; 8, IPTV decoding coprocessor; 9, analog audio-video encoder; 10, RJ-45 interface module; 11, VoIP coder/decoder; 12, RJ-11 module; 13, coupler; 14, wave detector; 15, Wi-Fi signal processing; 16, Rx/Tx diverter switch; 17, Wi-Fi antenna; 18, power module; 19, serial port module; 20, BOOTROM; 21, smart card module; 22, SDRAM; 23, FLASH; 24, analog audio-video exports TV to; 25, RJ-45 connects PC; 26, RJ-11 connects IP phone, and 48, the RoF optical transceiver module, 49, the IP data processing unit, 50, the Wi-Fi processing unit, 51, photoelectricity/electrooptic conversion module.
Fig. 2 is the structural representation of network of the present invention, wherein: 27, IP network; 28, ordering server; 29, network management system; 30, OLT; 31, wdm system; 32, ODN; 33, multi-service terminal; 34, IP operation transceiver part; 35, Wi-Fi package module; 36, frequency division multiplexing/demultiplexing module; 37, photoelectricity/electrooptic conversion module; 38, photoelectric conversion unit; 39, audio frequency and video processing unit, 40, IP data processing unit; 41, Wi-Fi processing module; 42, IPTV; 43, IP phone; 44, Internet; 45, wireless terminal; 46,1550nm light signal; 47,1310nm light signal.
Fig. 3 is to use multi-service terminal system of the present invention, utilizes the RoF technology to finish the flow diagram of downlink transfer information approach, and wherein A-C is its each step.
Fig. 4 is to use multi-service terminal system of the present invention, utilizes the RoF technology to finish the flow diagram of uplink information approach, and wherein 1)-4) be its each step.
Embodiment
The present invention will be further described below in conjunction with drawings and Examples, but be not limited thereto.
Embodiment 1:
The embodiment of the invention 1 is shown in Fig. 1-2, a kind of towards merging the multi-service terminal system that inserts, comprise network and multi-service terminal, network is based on the PON technology, the multi-service terminal is inserted at the network rear, wherein multi-service terminal mainly comprises RoF optical transceiver module 48, frequency division multiplexing/demultiplexing module 5, Wi-Fi processing unit 50, IP data processing unit 49 and Wi-Fi antenna 17, it is characterized in that RoF optical transceiver module 48 is connected with frequency division multiplexing/demultiplexing module 5; Frequency division multiplexing/demultiplexing module 5 is connected with Wi-Fi antenna 17 with the Wi-Fi processing unit 50 Wi-Fi processing unit 50 that is connected with IP data processing unit 49 respectively; RoF optical transceiver module 48 comprises an optical fiber input interface 2 and an optical fiber output interface 1, be connected with 1550nm Optical Receivers 4 and 1310nm light emission module 3 respectively, signal descending, the uplink port of two interfaces, downlink port optical signal carrier wavelength is 1550nm, and uplink port optical signal carrier wavelength is 1310nm; RoF optical transceiver module 48 also includes photoelectricity/electrooptic conversion module 51, descending, up signal can be carried out photoelectricity/electric light conversion; IP data processing unit 49 comprises ether Switching Module 6, FPGA module 7, IPTV decoding coprocessor 8, analog audio-video encoder 9, RJ-45 interface module 10, VoIP coder/decoder 11, RJ-11 module 12; Ether Switching Module 6 is connected with FPGA module 7, RJ-45 interface module 10 and VoIP coder/decoder 11 respectively, finishes Service Switching Function; Connect IPTV decoding coprocessor 8 after the FPGA module 7, connect analog audio-video encoder 9 behind the IPTV decoding coprocessor 8 to finish analog video signal output; Connect RJ-11 module 12 behind the VoIP coder/decoder 11 and finish the output of VoIP signal; Wi-Fi processing unit 50 comprises coupler 13, wave detector 14, Wi-Fi signal processing 15, Rx/Tx diverter switch 16, Wi-Fi signal processing 15 is connected on frequency division multiplexing/demultiplexing module 5 back, its back connects Rx/Tx diverter switch 16, and Rx/Tx diverter switch 16 back link with Wi-Fi antenna 17; Coupler 13 obtains coupled power from frequency division multiplexing/demultiplexing module 5 output circuits, after connect wave detector 14, wave detector 14 outputs are connected with Rx/Tx diverter switch 16 with control Rx/Tx diverter switch 16;
Network mainly comprises IP network 27, ordering server 28, network management system 29, OLT30, wdm system 31, ODN32 and multi-service terminal 33, and wherein the OLT30 front end links to each other with IP network 27, ordering server 28 and network management system 29; The OLT back links to each other with wdm system, and wdm system links to each other with ODN, and ODN links to each other with the multi-service terminal; OLT comprises IP operation transceiver part, Wi-Fi package module, frequency division multiplexing/demultiplexing module and photoelectricity/electrooptic conversion module; Be connected with frequency division multiplexing/demultiplexing module jointly after wherein the IP operation transceiver part is connected with the Wi-Fi package module; Be connected with photoelectricity/electrical to optical converter after frequency division multiplexing/demultiplexing module.
Embodiment 2:
A kind ofly use above-mentioned multi-service terminal system, utilize the RoF technology to finish the method for downlink transfer information, as shown in Figure 3, step is as follows:
A, OLT unit receive from the miscellaneous service based on the IP agreement in backbone/metropolitan area network, part ether signal is carried out the Wi-Fi protocol encapsulation, radiofrequency signal after the encapsulation and ether signal frequency division multiplexing, carry with the 1550nm optical wavelength, IPTV, Internet and VoIP etc. transmit with a wavelength with two kinds of signal modes like this;
B, downlink optical signal utilize the shunt function of ODN unit, and downstream signal is sent to each multi-service terminal;
C, downstream signal comprise in the processing procedure that inserts the multi-service terminal:
Be converted to the signal of telecommunication behind C1, the photoelectric conversion unit receiving optical signals, send into frequency division multiplexing/demultiplexing module;
C2, frequency division multiplexing/demultiplexing module are sent the gigabit ether signal of bearer IP service into the IP data processing unit after signal of telecommunication demultiplexing is gone out 2.4GHz radiofrequency signal and gigabit ether signal, and the Wi-Fi signal of 2.4GHz frequency range is sent into the Wi-Fi processing module;
After C3, IP data processing unit are finished protocol processes to the IPTV business, Internet business and the VoIP business that are encapsulated as the EPON frame, the IPTV business is sent into the audio-video signal processing unit, equally by user's simulated television terminal, finish the broadcast of IPTV business afterwards;
C4, user utilize the RJ-45 interface to finish the access of Internet business by personal computer, can also finish the broadcast of IPTV business in addition by the software decode technology;
C5, VoIP are professional to be connected with subscriber phone by RJ-11 through the decoding back, finishes the descending access of speech business;
Be delivered to the Wi-Fi antenna after C6, Wi-Fi processing module are handled the 2.4GHz radiofrequency signal and finish the IP operation wireless coverage.
A kind ofly use above-mentioned multi-service terminal system, utilize the RoF technology to finish the method for uplink information, as shown in Figure 4, step is as follows:
1) at first finish following processing by the multi-service terminal:
A, for TV user, upward signals such as its video request program by the response of the DVB master chip of audio frequency and video processing unit, are sent into the IP data processing unit, are packaged into the EPON frame.Send into frequency division multiplexing/demultiplexing module;
B, for personal computer user, its upward signal is sent into the IP data processing unit through the RJ-45 mouth, is packaged into the EPON frame equally.Send into frequency division multiplexing/demultiplexing module;
C, for the voip user, its upward signal is sent into the VoIP encoder through RJ-11, finishing coding back and being packaged into the EPON frame by the IP data processing unit, sends into frequency division multiplexing/demultiplexing module;
D, handle through the Wi-Fi processing module for the upward signal of Wi-Fi antenna input and to send into frequency division multiplexing/demultiplexing module;
2) 2.4GHz radiofrequency signal and gigabit ether signal carry out the electric light conversion after frequency division multiplexing/demultiplexing module is finished frequency division multiplexing, finish up transmission with the 1310nm wavelength;
3) after the ODN unit receives the uplink optical signal that sends according to different time-gap from each multi-service terminal, it is finished time division multiplexing, send to the OLT unit then;
4) the OLT unit is after receiving user's upstream data, for up Wi-Fi agreement radiofrequency signal at first deblocking dress up the ether signal, after for example VoIP, Internet business are finished protocol processes to data then, send in metropolitan area/backbone network, carry out the route of next jumping; Then send in the vod server for the video request program command information.
Claims (3)
1. one kind towards the multi-service terminal system that merge to insert, comprise network and multi-service terminal, network is based on the PON technology, the multi-service terminal is inserted at the network rear, wherein multi-service terminal mainly comprises RoF optical transceiver module, frequency division multiplexing/demultiplexing module, Wi-Fi processing unit, IP data processing unit and Wi-Fi antenna, it is characterized in that the RoF optical transceiver module is connected with frequency division multiplexing/demultiplexing module; Frequency division multiplexing/demultiplexing module is connected with the IP data processing unit with the Wi-Fi processing unit respectively; The Wi-Fi processing unit is connected with the Wi-Fi antenna; The RoF optical transceiver module comprises an optical fiber input interface and an optical fiber output interface, be connected with 1550nm Optical Receivers and 1310nm light emission module respectively, signal descending, the uplink port of two interfaces, downlink port optical signal carrier wavelength is 1550nm, and uplink port optical signal carrier wavelength is 1310nm; The RoF optical transceiver module also includes photoelectricity/electrooptic conversion module, descending, up signal can be carried out photoelectricity/electric light conversion; The IP data processing unit comprises ether Switching Module, FPGA module, IPTV decoding coprocessor, analog audio-video encoder, RJ-45 interface module, VoIP coder/decoder and RJ-11 module; The ether Switching Module is connected with FPGA module, RJ-45 interface module and VoIP coder/decoder respectively, finishes Service Switching Function; Connect IPTV decoding coprocessor after the FPGA module, connect the analog audio-video encoder behind the IPTV decoding coprocessor to finish analog video signal output; Connect the RJ-11 module behind the VoIP coder/decoder and finish the output of VoIP signal; The Wi-Fi processing unit comprises coupler, wave detector, Wi-Fi signal processing, Rx/Tx diverter switch, the Wi-Fi signal processing part is tapped at frequency division multiplexing/demultiplexing module back, its back connects the Rx/Tx diverter switch, and Rx/Tx diverter switch back links with the Wi-Fi antenna; Coupler obtains coupled power from frequency division multiplexing/demultiplexing module output circuit, after connect wave detector, the wave detector output is connected with the Rx/Tx diverter switch with control Rx/Tx diverter switch;
Network mainly comprises IP network, ordering server, network management system, OLT, wdm system, ODN and multi-service terminal, and wherein the OLT front end links to each other with IP network, ordering server and network management system; The OLT back links to each other with wdm system, and wdm system links to each other with ODN, and ODN links to each other with the multi-service terminal; OLT comprises IP operation transceiver part, Wi-Fi package module, frequency division multiplexing/demultiplexing module and photoelectricity/electrooptic conversion module; Be connected with frequency division multiplexing/demultiplexing module jointly after wherein the IP operation transceiver part is connected with the Wi-Fi package module; Be connected with photoelectricity/electrical to optical converter after frequency division multiplexing/demultiplexing module.
2. one kind is used the described multi-service terminal system of claim 1, utilizes the RoF technology to finish the method for downlink transfer information, and step is as follows:
A, OLT unit receive from the miscellaneous service based on the IP agreement in backbone/metropolitan area network, part ether signal is carried out the Wi-Fi protocol encapsulation, radiofrequency signal after the encapsulation and ether signal frequency division multiplexing, carry with the 1550nm optical wavelength, IPTV, Internet and VoIP etc. transmit with a wavelength with two kinds of signal modes like this;
B, downlink optical signal utilize the shunt function of ODN unit, and downstream signal is sent to each user terminal;
C, downstream signal comprise in the processing procedure that inserts the multi-service terminal:
Be converted to the signal of telecommunication behind C1, the photoelectric conversion unit receiving optical signals, send into frequency division multiplexing/demultiplexing module;
C2, frequency division multiplexing/demultiplexing module are sent the gigabit ether signal of bearer IP service into the IP data processing unit after signal of telecommunication demultiplexing is gone out 2.4GHz radiofrequency signal and gigabit ether signal, and the Wi-Fi signal of 2.4GHz frequency range is sent into the Wi-Fi processing module;
After C3, IP data processing unit are finished protocol processes to the IPTV business, Internet business and the VoIP business that are encapsulated as the EPON frame, the IPTV business is sent into the audio-video signal processing unit, equally by user's simulated television terminal, finish the broadcast of IPTV business afterwards;
C4, user utilize the RJ-45 interface to finish the access of Internet business by personal computer, can also finish the broadcast of IPTV business in addition by the software decode technology;
C5, VoIP are professional to be connected with subscriber phone by RJ-11 through the decoding back, finishes the descending access of speech business;
Be delivered to the Wi-Fi antenna after C6, Wi-Fi processing module are handled the 2.4GHz radiofrequency signal and finish the IP operation wireless coverage.
3. one kind is used the described multi-service terminal system of claim 1, utilizes the RoF technology to finish the method for uplink information, and step is as follows:
1) at first finish following processing by the multi-service terminal:
1., for TV user, upward signals such as its video request program by the response of the DVB master chip of audio frequency and video processing unit, are sent into the IP data processing unit, are packaged into the EPON frame.Send into frequency division multiplexing/demultiplexing module;
2., for personal computer user, its upward signal is sent into the IP data processing unit through the RJ-45 mouth, is packaged into the EPON frame equally.Send into frequency division multiplexing/demultiplexing module;
3., for the voip user, its upward signal is sent into the VoIP encoder through RJ-11, finishing coding back and being packaged into the EPON frame by the IP data processing unit, sends into frequency division multiplexing/demultiplexing module;
4., send into frequency division multiplexing/demultiplexing module for the upward signal process Wi-Fi processing module processing of Wi-Fi antenna input;
2) 2.4GHz radiofrequency signal and gigabit ether signal carry out the electric light conversion after frequency division multiplexing/demultiplexing module is finished frequency division multiplexing, finish up transmission with the 1310nm wavelength;
3) after the ODN unit receives the uplink optical signal that sends according to different time-gap from each terminal, it is finished time division multiplexing, send to the OLT unit then;
4) the OLT unit is after receiving user's upstream data, for up Wi-Fi agreement radiofrequency signal at first deblocking dress up the ether signal, after for example VoIP, Internet business are finished protocol processes to data then, send in metropolitan area/backbone network, carry out the route of next jumping; Then send in the vod server for the video request program command information.
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