CN101883297A - Digital broadband integration and superposition system and method thereof - Google Patents
Digital broadband integration and superposition system and method thereof Download PDFInfo
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Abstract
The invention discloses a digital broadband integration and superposition system and a method thereof. The system comprises a core network system, a core extended network system, an access network system and a user network system, wherein the core network system is used for providing information which comprises voice, data and the information disseminated in the form of image; the core extended network system is used for seamlessly integrating the information and the access network system by using GPON and EPON technology; the access network system is used for dividing, multiplexing, mixing and superposing frequency spectra of an information transmission channel and transmitting the information after superposition between the core network system and the user network system in a wired or wireless mode; the user network system is used for performing information interaction with the core network system; and the core network system, the core extended network system, the access network system and the user network system are connected with one another in turn. The digital broadband integration and superposition system and the method thereof improve the bandwidth and the speed for the information transmission and are favorable for establishing an access network and a home network of a high-speed broadband by utilizing conventional circuits and frequency spectrum resources.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of digital broadband merges the system and the method thereof of stack.
Background technology
All buildings have been arrived in the cable of China (comprising cable TV, phone, power line, the control cable) network coverage, and wherein the coverage rate maximum is power supply network, secondly is telephone network.China's power supply network covers all town and country, transmits the AC power of 50Hz, has covered the room of all buildings.The cable telephone network trunk is the light net, and final several kilometers have covered the user by twisted-pair feeder.
Cable TV network was built so far since the seventies in 20th century, and the user has wherein had digital cable customers to surpass 5,000 ten thousand more than 1.7 hundred million families, covered population 500,000,000.Cable television network adopts HFC net (Hybrid Fiber-Coaxial, optical fiber and coaxial cable hybrid network) as transmission medium more, and optical fiber and coaxial cable base band broad can satisfy the requirement of integrated information service network.
Cable television network particularly has bandwidth, capacity is big, multi-functional, cost is low, antijamming capability is strong, support multiple business to connect huge numbers of families' advantage.The bandwidth potential of cable of cable TV has more than the 7000M in theory, but simple realization 1000M under the prior art.Cable TV network builds up, and its utilization and the development that develops into information superhighway are laid a good foundation.Therefore, in China's integration of three networks process, the HFC net is easy to develop into the main body of broadband communication network most, as long as develop corresponding ASIC (Application Specific Intergrated Circuits, application-specific integrated circuit (ASIC)) combines with terminal equipment, just can realize two-way multimedia and high-speed wideband data communication, the bandwidth that provides is enough to satisfy the demand of decades from now on.
Carrierfree frequency division orthogonal multiplex method because energy-conservation, safe, antijamming capability is strong, reasons such as bandwidth height, good stability, the key technology focus of just becoming in domestic and international solution " unification of three nets " scheme research and development, chasing.Because its high bandwidth that provides by cable can realize the comprehensive transmission of interactive HDTV (High-Definition Television) program, internet information, face-to-face communication content, therefore, the user can significantly reduce equipment disposition and correlative charges thereof.Contrast existing network service charge and access way, employing is based on cable TV network IP (Internet Protocol, the agreement that interconnects between the network) access way user construction network again, and overall cost is low, need not change the existing terminal network equipment, more superiority is arranged.
Occurred many at present based on cable, the bidirectional data transfers technology of cable of cable TV particularly, more typically have following several: DOCSIS (Data Over Cable Service InterfaceSpecification, wire transmission data service interface specification), EOC (Ethernet over Coax, ethernet coaxial cable) and MoCA (Multimedia over Coax Alliance, multimedia over Coax Alliance).
Wherein, the DOCSIS major defect: upstream noise is a ubiquitous problem, and especially under real time business situations such as video or IP speech, noise jamming will cause transfer of data time-delay and shake, cause video image distortion or speech discontinuous.
The EOC major defect: low frequency part is subjected to the interference of outside noise easily; The number of terminals that each local side is supported is fewer, needs to increase the quantity of local side under multi-user's situation, has also increased cost simultaneously.
The MoCA major defect: transmission range is limited; Require the connection degree higher (for example, requiring cable to arrive each room) of the cable of cable TV of family, be subjected to the restriction of certain objective condition in actual the use; Though can pass through branch distributor, operating frequency is too high, and excessive decay is arranged, need to change the branch distributor and the cable of high-quality, to the adaptive capacity of network a little less than.
The planning of carrierfree frequency division orthogonal multiplex method system frequency comprises: low side frequency, high-end frequency and wireless.Its low and middle-end frequency is as the frequency band of paying the utmost attention to use, main because the so middle signal amplifying apparatus that just need not to add of the long transmission distance (generally can reach 600m) of low frequency, reduced the difficulty that construction is transformed, be applicable to that the light node is from subscriber household situation far away (such as FTTC, coaxial cable arrives subscriber household again to the building), but to consider the problem that low frequency noises is more serious simultaneously.High-end frequency spectrum aboundresources, frequency band is more, and high frequency has the advantage that noise is low, performance is controlled, though transmission range is shorter relatively, can satisfy most of demand.
At FTTH (Fiber To The Home, Fiber to the home) can't the situation of very fast realization under, and Fiber-To-The-Building/village can comparatively fast realize, use wired interactive HDTV (High-Definition Television) cable to be undoubtedly not only economy but also selection efficiently as last hundreds of rice access medium, and by the analysis to more current existing modification schemes, the DOCSIS technology maturation, but it need transform existing line, and cost is higher.MoCA uses front end, and transmission range is closer, need add relay amplifier.EOC lacks unified standard, and the frequency range of use is narrow, and transmission rate is restricted.
In the modern times of high definition interdynamic video extensive use, the bandwidth problem that becomes international.Existing telephone wire is owing to the root problem of capital construction, the cost height of transformation.Power line is owing to transformer and subscriber equipment complexity, and uncomfortable unification is distance and the above message transmission of bandwidth 100M more than hundred meters, uses but be suitable for China's household internal closed loop, i.e. the user network of this paper.And cable of cable TV carries out two-wayization transformation by state-of-the-art technology, can low-costly realize very high bandwidth, even can satisfy the demand of decades from now on.Therefore, be suitable as the Access Network of public broadband net.According to China's national situation, make up high-speed wideband net cheaply, be communicated with national huge numbers of families, be the demand of national development.In China's integration of three networks, need a kind ofly coincide with national conditions, superimposing technique is merged in the broadband cheaply, to promote our national industry.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the object of the present invention is to provide a kind of digital broadband to merge the system and the method thereof of stack, can improve the bandwidth and the transmission of Information speed of channel greatly.
In order to achieve the above object, the present invention has taked following technical scheme:
A kind of digital broadband merges the system of stack, and wherein, described system comprises:
Be used to provide the core network system of various information; Described information comprises voice, data and the various information of propagating with image format;
Be used to utilize GPON and EPON technology described information and access net system to be carried out the core extend web system of seamless fusion;
Be used for channel with transmission information carry out spectrum division, multiplexing, mix and stack, and the information after will superposeing is in wired or wireless mode, the access net system that transmits between described core network system and user network system;
Be used for carrying out the user network system of information interaction with core network system;
Described core network system, core extend web system, access net system are connected successively with the user network system.
Described system, wherein, described core network system comprise at least PSTN backbone network subsystem, CATV backbone network subsystem and Internet backbone network subsystem one of them.
Described system, wherein, access net system comprises:
Be used for wired information and wireless messages carry out spectrum division, multiplexing, mix and the multiple connection/separation equipment of stack;
Be used for providing the cable system of information transfer channel to described user network system;
Described cable system is arranged on the signal input part and the output of described multiple connection/separation equipment.
Described system, wherein, described user network system comprises the subscriber's local information system, described subscriber's local information system is carried out information interaction by gateway and described core network system.
Described system, wherein, described user network system comprises:
Be used for user terminal that signal is carried out modulation, route and distributes;
Terminal equipment with described core network system interactive information;
Described user terminal is connected with terminal equipment.
Described system, wherein, described user terminal comprises:
Be used for separator that the cable system information transmitted is separated and distributed;
Be used for cable base band communication modulation module that the information of separating is carried out modulation;
Be used for ethernet router in user terminal transmission information; And
The network local side that is used for connecting terminal equipment;
The processing module that is used for intelligent networking;
Described separator, cable base band communication modulation module, router, network local side are connected successively with processing module.
Described system, wherein, described terminal equipment comprise at least computer, phone, notebook computer and television set one of them; Described computer, phone and notebook computer are connected described user terminal by Ethernet cable TV modulator-demodulator, home phone number net power line modem with the home wireless modulator-demodulator respectively; Described television set is connected with described user terminal by set-top box.
A kind of digital broadband merges the method for stack, and wherein, described method may further comprise the steps:
Provide various accessive informations by described core network system; Described information comprises voice, data and the various information of propagating with image format;
Core extend web system utilizes GPON and EPON technology, and described information and access net system are carried out seamless fusion;
The channel that access net system will transmit information carry out spectrum division, multiplexing, mix and stack, and the information after will superposeing is transmitted between described core network system and user network system;
User network system and core network system interactive information, and described information distributed for the terminal equipment in the user network use.
Described method, wherein, described access net system transmits described information between described core network system and user network system step specifically comprises:
The information track of transmission information is carried out spectrum division;
Wired information and wireless messages in the core network system is multiplexing, and the channel of the information of each section frequency band merged, superposes;
Bandwidth after the stack is distributed and transmitted;
Utilize channel coding technology that the information in the transmission course is carried out chnnel coding, and output.
Described method, wherein, described user network system and core network system interactive information, and distribute the step of using for the terminal equipment in the user network specifically to comprise the described information:
The information of each section frequency band is separated;
Information after separating is carried out modulation;
With the information fusion after the modulation, distribute to terminal equipment.
Digital broadband provided by the invention merges the system and the method thereof of stack, owing to adopted various information with core network system, by spectrum division, multiplexing, mix and stack, and be transferred to the user network system by cable system, use for terminal equipment by separation of user network system and distribution again, improved the speed of message transmission, reduced the integration of three networks, and the overall cost of more network integration frameworks, help utilizing existing circuit and frequency spectrum resource to make up the Access Network and the home network of high-speed wideband.
Description of drawings
Fig. 1 merges the structured flowchart of the system of stack for digital broadband of the present invention;
Fig. 2 merges the network topological diagram of the system of stack for digital broadband of the present invention;
Fig. 3 merges the spectrum division schematic diagram of the system of stack for digital broadband of the present invention;
Fig. 4 merges the method flow diagram of stack for the present invention realizes digital broadband.
Embodiment
The invention provides system and method thereof that a kind of digital broadband merges stack, clearer, clear and definite for making purpose of the present invention, technical scheme and effect, below with reference to accompanying drawing and give an actual example that the present invention is described in more detail.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Digital broadband of the present invention merges the system of stack, has mainly utilized carrierfree frequency division orthogonal multiplex technology to realize that digital broadband merges stack.Carrierfree of the present invention, be exactly not use carrier wave, utilize, the time domain pulse of drop point (for example, tens nanoseconds) directly realize modulation, the transmission of ultra broadband is placed on the modulation intelligence process on the frequency band of a non-constant width to be carried out, and can determine the frequency range that bandwidth is occupied with the time that is continued in this process.This mode has that the transmit signal power spectrum density is low, energy-conservation, safe, bandwidth is high, and antijamming capability is strong, and available software such as directly controls at advantage.Existing semiconductor device art can control impuls width, realize this technology.And the directly actuated method of software is effective flexibly, for example when some band transmissions effects are undesirable, can remedy with other available frequency ranges, and not need more exchange device, helps the distribution and the Long-distance Control of Internet resources.And wireless power is very low, does not cause interference to external world, and present U.S. FCC (Federal CommunicationsCommission, US Federal Communication Committee) has allowed open-minded, has begun extensive use in some countries.
See also Fig. 1 and Fig. 2, digital broadband of the present invention merges the system of stack, and described system comprises core network system 100, core extend web system 200, access net system 300 and the user network system 400 that connects successively.
Described core network system 100 is used to provide various addressable information, and these information comprise voice, data and the various information propagated with image format etc.Described core extend web system 200 is a passive system, be used to utilize GPON (Gigabit-Capable PON, Gigabit Passive Optical Network) and EPON (Ethernet Passive Optical Network, Ethernet passive optical network) technology is carried out seamless fusion with the information and the access net system 300 of core network system output, and the whole network is realized unified management and control.Described access net system 300 be used for channel with transmission information carry out spectrum division, multiplexing, mix and stack, and the information after will superposeing is in wired or wireless mode, transmission information in core network system 100 and user network system 400.User network system 400 is used for carrying out information interaction by access net system 300 and core network system 100.
See also Fig. 3, because the information of PSTN backbone network subsystem 101, CATV backbone network subsystem 102 and 103 outputs of Internet backbone network subsystem comprises the information of different frequency bands section, the present invention adopts wired information and the wireless messages with core network system 100 outputs to carry out spectrum division, and information is divided into low side frequency, high frequency frequency and wireless.
Wherein, described low side frequency is the information of 1MHz-80MHz frequency range, and high-end frequency is the information of 1000MHz-5000MHz frequency range, and wired and wireless center frequency is the information of 1254MHz, 2508MHz, 3430MHz, 3960MHz, 4480MHz frequency range; Each section frequency band can provide the bandwidth of 480Mbps at present, and multiband merges by physical layer, and protocol layer is realized the bandwidth stack.Along with the development of technology, available from now on bandwidth is higher.Wherein, look application and can leave some arrowband frequency ranges, be used for the narrow band communication of Internet of Things equipment and energy net equipment.
And the chip in access net system 300 systems also will redesign, and it adopts protocol layer and based on the physical layer of orthogonal frequency division multiplexi (OFDM).In protocol layer, the central processing system (CPS) of FDDI sublayer protocol layer (MAC) provides the Core Feature of MAC layer, for example: system's access, allocated bandwidth, establishment of connection and maintenance etc.CPS receives data by SAP (Systems, Applications and Products in Data Processing, SAP system), then data qualification is sent to specific MAC layer and connects.Service quality (QoS) is used for the data on its physical layer are transmitted and dispatched, and data, physical layer control and statistical information are transmitted between MAC layer CPS and physical layer by the SAP of physical layer.
In described carrierfree communication process, can adopt the method for multiple access, realize maximum concurrent users; Adopt the mode of grid, realize the wireless coverage and the link on plane.In the protocol layer of said chip, the central processing system (CPS) of FDDI sublayer protocol (MAC) layer provides the combination function of MAC layer, with the frequency range stack of different frequency bands with share.
Digital signal often because a variety of causes, makes to produce error code in the data flow that transmits in transmission, thus make receiving terminal produce image jump, discontinuous, phenomenon such as mosaic appears.So in signals transmission, also need be with passing through the chnnel coding link, to guarantee the reliability of transmission.Wherein, channel coding technology comprises the forward error correction algorithm (FEC) and the algorithm that interweaves, carry out in proper order according to this at transmitting terminal, then should carry out at receiving terminal according to opposite order, adopt same algorithm reduction and deinterleaving, the FEC algorithm comprises the Viterbi code decode algorithm, and the algorithm that interweaves comprises convolution method.Wherein, the Viterbi code decode algorithm is the strong forward error correction algorithm of antinoise feature (FEC), and convolution method is the high efficiency de-interleaving algorithm that interweaves.
Please continue to consult Fig. 1 and Fig. 2, access net system 300 of the present invention comprises multiple connection/separation equipment 201, switch 202, router two 03, local side 204 and cable system 600.Described CATV backbone network subsystem 102 is connected described multiple connection/separation equipment 201 by optical fiber 500 respectively with Internet backbone network 103 subsystems, and be in series with switch 202 successively between Internet backbone network subsystem 103 and the multiple connection/separation equipment 201, router two 03 and local side 204.
Wherein, multiple connection/separation equipment 201 is the important component parts in the access net system, is provided with above-mentioned chip in multiple connection/separation equipment, be used for wired information and wireless messages carry out spectrum division, multiplexing, mix and stack.Information after mixing, superposeing is transferred to user network system 400 by cable system 600.And the switch 202 that is connected between Internet backbone network subsystem 103 and the router two 03 is used to utilize the optical signal transmission data.Present embodiment is utilized carrierfree, frequency division orthogonal multiplex technology, and information is carried out the speed that spectrum division, multiplexing method have been widened the bandwidth of message transmission and improved message transmission.
At this moment, consider that wired interactive HDTV (High-Definition Television) cable medium and low frequency part transmission range is far away but low-frequency disturbance is more serious simultaneously, interference ratio is less but the very fast transmission range of decay is very near in the HFS transmission, so cable television operators can select the local side 204 of system according to actual conditions.And adopt SOC (System on Chip in multiple connection/separation equipment, system level chip) chip or CPU (Central Processing Unit, CPU) can provide remote configuration control, control end can be finished remote testing, selection and operational monitoring by software.
Wherein, the category-A local side uses low side frequency 1MHz-80MHz, long transmission distance (can reach 600m), just need not to add signal amplifying apparatus like this, reduced the difficulty that construction is transformed, be applicable to that the light node is from subscriber household situation far away (as FTTC, coaxial cable arrives subscriber household again to the building).But to consider the problem that low frequency noises is more serious simultaneously.The MAC layer transmission rate that has physical transmission rate and the 350Mbps of 480Mbps.
The category-B local side uses high-end frequency 1000MHz-5000MHz, is centered close to 1254MHz, 2508MHz, and 3430MHz, 3960MGHz, and 4480MHz, every section frequency band provides the MAC layer transmission rate of physical transmission rate and the 350Mbps of 480Mbps.So high frequency is as standby scheme, characteristics are transmission rate height, but because high frequency attenuation is more serious, transmission range shortens.Be applicable to the light node to the situation of subscriber household close together (as Fiber To The Building coaxial cable situation to the user, in 300 meters), along with after the development of " light advances copper and moves back ", optical fiber is more and more near the user, the distance of Access Network is shorter and shorter, and the potentiality of bandwidth are also just increasing.Can consider to use more high-frequency band.Every section MAC layer transmission rate that has physical transmission rate and the 350Mbps of 480Mbps, multistage stack then, the bigger bandwidth that the demand that reaches is required.And along with the development of technology, available bandwidth is more and more higher.Broadband potentiality as cable have more than the 10G, are enough to satisfy from now on demand for a long time.
The active scheme that described user network of the present invention system 400 belongs in the user resident network, it comprises: the subscriber's local information system, described subscriber's local information system is carried out information interaction by gateway and described core network system.
In the present embodiment, described user network system 400 also comprises and is used for user terminal 301 that signal is carried out modulation, route and distributes, be used for being connected with described user terminal, and with the terminal equipment of core network system interactive information, and private network.
Wherein, described user terminal 301 comprises separator 302, cable base band communication modulation module 305, ethernet router 306, network local side 307 and the processing module that connects successively.Separator 302 is used for the cable system information transmitted being separated and distributing, and cable base band communication modulation 305 pairs of inputs of module information is wherein carried out D/A switch or mould/number conversion, converts the information that connected equipment can be discerned to.Ethernet router 306 is routers of supporting 1000Mbps, be used for the priority transmission information by information, and the network local side is mainly used in short distance connecting terminal equipment, can realize the broadband of the highest 1000Mbps.Described processing module is used for intelligent networking, and as open interface Remote configuration and Control Software etc., it can be directly embedded into any link of network, uses for remote networking.
Described terminal equipment comprises terminals such as television set 304, computer 308, phone 309, notebook computer 310 and mobile phone 311.User terminal 301 connects interactive HDTV (High-Definition Television) 304 by set-top box 303, and user terminal 301 connects computer 308, phone 309 and accessing wirelessly terminal 316 by family's Ethernet cable TV modulator-demodulator 312, home phone number net power line modem 313, home wireless power line modem 314 respectively, and user network system 400 is by coaxial cable 601 and PERCOM peripheral communication, can realize interactive HDTV (High-Definition Television) program simultaneously, online, function such as make a phone call.
Wherein, described television set has the Ethernet interface, and television set can also be connected with user terminal by wireless mode like this.Described home wireless power line modem 314 is the modulator-demodulator of radio function, and notebook computer 310 and mobile phone then can be realized online merit and voice-enabled chat function by this accessing wirelessly terminal 310 of wireless connections.
Above-mentioned all user terminals are supported unified NMP, as TR-069 agreement [CWMP (CPE WAN Management Protocol, CPE wide area network management agreement) be by DSL (DigitalSubscriber ' s Line, digital subscriber line) forum initiates one of technical specification of exploitation, be numbered TR-069, so the TR-069 agreement that is otherwise known as].Digital bandwidth stack emerging system of the present invention carries out information interaction between its terminal equipment and the core network system, the information interaction between the terminal equipment adopts unified teleprocessing module.Also can visit private network by public network, form full process and full network.Certainly, the visit private network needs strict safety measure, with protection privacy and private information.And the networking mode of user network system 400 is more flexible, and power line, cable of cable TV, telephone wire and wireless mode can be considered, can unify control.Based on most of families actual conditions of China, we can adopt wireless and mode networking power line broadband communications (PLC).
And according to above-mentioned different local sides 204 equipment, user terminal 301 also is divided into accordingly: category-A terminal and category-B terminal.Two kinds of terminals all have the household wireless LAN module, are operated on the wireless frequency.
The category-A terminal is used low side frequency 1MHz-80MHz, long transmission distance (can reach 600m), just need not to add signal amplifying apparatus like this, reduced the difficulty that construction is transformed, be applicable to that the light node is from subscriber household situation far away, but to consider the problem that low frequency noises is more serious simultaneously, share the physical transmission rate of 480Mbps and the MAC layer transmission rate of 200Mbps.
The category-B terminal is used high-end frequency 1000MHz-5000MHz, and high frequency is as standby scheme, and characteristics are transmission rate height, but because high frequency attenuation is more serious, transmission range is limited.Be applicable to the situation of optical node to the subscriber household close together, along with after the development of " light advances copper and moves back ", can consider to use more high-frequency band.Share the physical transmission rate of 480Mbps and the MAC layer transmission rate of 350Mbps.And described local side and user side can adopt a plurality of frequency bands to insert, and realize bandwidth stack and shared.
The active scheme that the present invention adopts, its advantage are that the form that adopted of user network system 400 is more flexible, and wired interactive HDTV (High-Definition Television) cable, telephone wire, power line and wireless mode can be considered.Concerning average family, input ratio is less, and can form mode according to the only home network of the different choice of the actual conditions of each family.
Except that present embodiment adopts active scheme, also comprise passive scheme in the described user network system 400, directly arrive the situation of terminal equipment at access net system, be generally wired interactive HDTV (High-Definition Television) cable and insert.Passive network is to adopt a series of separation equipment, and these separation equipments are passive.By a series of separator, access network is extended to each room of subscriber household.Because the use of a plurality of separators, make the network room that can go directly, whole access network all is passive basically, and passive mode has increased the reliability (as the influence of power breakdown) of network to a certain extent, and because network directly arrives the room, network configuration is fairly simple; And the work such as the operator that makes things convenient for network manages, configuration that access terminal in through a plurality of rooms; Virtual network operator can improve the quality of operation service to a plurality of unified managing that access terminal of one family, and user's Quality of experience, reduces maintenance cost.
Based on above-mentioned system, embodiment of the invention correspondence provides a kind of and realizes that based on carrierfree frequency division orthogonal multiplex digital broadband merges the method for stack, sees also Fig. 4, and described method comprises:
S401, provide various accessive informations by described core network system; Described information comprises voice, data and the various information of propagating with image format;
S402, core extend web system utilize GPON and EPON technology, and described information and access net system are carried out seamless fusion;
The channel that S403, access net system will transmit information carry out spectrum division, multiplexing, mix and stack, and the information after will superposeing is transmitted between described core network system and user network system.In the present embodiment, described information is transmitted with wired mode or wireless mode.
S404, user network system and core network system interactive information, and described information distributed for the terminal equipment in the user network use.
Be provided with user terminal, terminal equipment and private network in the user network system, terminal equipment can be transferred to the information in the user network system in the core network system by access net system, correspondingly, information in the core network system is transferred in the user network system by access net system, and also can interactive signal between terminal equipment and the terminal equipment.Wherein, described step 403 specifically comprises:
The transmission of Information channel that receives is carried out spectrum division;
Wired information and wireless messages in the core network system is multiplexing, and the information of each section frequency band merged and superpose;
Bandwidth after the stack is distributed and transmitted;
Utilize channel coding technology that the information in the transmission course is carried out chnnel coding, and by cable or wireless mode output.
In the present embodiment, after information is carried out frequency partition,, widen bandwidth, quickened transmission of Information speed by spectrum division and multiplexing method utilizing multiplexing wired information on wireless messages or the basis on the basis of wired information at wireless messages.
Wherein said step S404 specifically comprises:
The information of each section frequency band is separated;
Information after separating is carried out modulation;
With the information fusion after the modulation, distribute to user terminal.
In terminal equipment and core network system interactive information, and also adopt above-mentioned step to carry out during interactive information between terminal equipment and the terminal equipment.
In sum, digital broadband provided by the invention merges system and the method thereof of stack, since adopted with the addressable information exchange of core network system cross spectrum division, multiplexing, mix and transmission that the method for stack is widened, and give the user network system by the existing cable Internet Transmission, used for terminal device by the separation of user network system and distribution, it has realized following effect again:
1, single line broadband: only need an existing cable to register one's residence and to realize the expansion that stack and several functions are merged in broadband and broadband, the bandwidth height, easy to use, with low cost, only can realize high-speed wideband by a cable of registering one's residence, to support the several functions such as many high definitions interactive TV, many online computings, videophone, monitoring.
2, one is frequently multiplex: unified frequency range, wired and wireless can the use. Adding wired front end becomes wiredly, comprises cable of cable TV, power line and telephone wire. Add wireless front end (such as antenna) for wireless, comprise broadband and arrowband.
3, networking everywhere: using has the modem of radio function, as long as there is the place of power supply can easily realize network insertion, so that apparatus such as computer can be moved everywhere, inserts everywhere, need not connect up. Very convenient.
4, family wireless function: aim at the high-speed wideband of home environment design, realize the link of IP network WiMAX and covering by the same equipment of household internal, radiation is little, and is simple to operate, practical function, and the functions such as video call, information sharing can be provided.
5, overall cost is low: because very little to the change of existing network, do not need to transform circuit, so construction cost is low, the improvement expenses that the user bears is also lower, only needs a small amount of terminal device of one-time payment and the expense of modem, just can realize the network rebuilding, allow its people easily enjoy the huge facility that the Two-way Network transformation brings, fully experience the dramatic change achievement that informationization brings, and realize full process and full network, interconnecting and a net multipotency of many nets, one is frequently multiplex.
But 6, insert at a high speed expansion platform: because the transmission characteristic of the physical medium-cable that uses, the abundant source encoding and decoding technology of adding the advanced person of bandwidth resources, therefore can realize at an easy rate inserting based on the high speed of wired interactive HDTV cable system, and reserve sufficient resource for later expanded function.
7, make up family's broadband network: the foundation of family's broadband network is conducive to interconnecting of the various information medium of household internal equipment, realizes resource-sharing, for digitlization, intellectuality, broadband, wireless penetration family have laid a good foundation.
8, make up family's broadband wireless network: the foundation of family's broadband wireless network, be conducive to the wireless penetration of interconnecting of the various information medium of household internal equipment, reduce inconvenience and overhead that wiring brings, realize resource-sharing, digital home haves laid a good foundation for wireless penetration.
Be understandable that, for those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection domain of the appended claim of the present invention.
Claims (10)
1. a digital broadband merges the system of stack, it is characterized in that described system comprises:
Be used to provide the core network system of various information; Described information comprises voice, data and the various information of propagating with image format;
Be used to utilize GPON and EPON technology described information and access net system to be carried out the core extend web system of seamless fusion;
Be used for channel with transmission information carry out spectrum division, multiplexing, mix and stack, and the information after will superposeing is in wired or wireless mode, the access net system that transmits between described core network system and user network system;
Be used for carrying out the user network system of information interaction with core network system;
Described core network system, core extend web system, access net system are connected successively with the user network system.
2. system according to claim 1 is characterized in that, described core network system comprise at least PSTN backbone network subsystem, CATV backbone network subsystem and Internet backbone network subsystem one of them.
3. system according to claim 2 is characterized in that access net system comprises:
Be used for wired information and wireless messages carry out spectrum division, multiplexing, mix and the multiple connection/separation equipment of stack;
Be used for providing the cable system of information transfer channel to described user network system;
Described cable system is arranged on the signal input part and the output of described multiple connection/separation equipment.
4. system according to claim 1 is characterized in that, described user network system comprises the subscriber's local information system, and described subscriber's local information system is carried out information interaction by gateway and described core network system.
5. system according to claim 1 is characterized in that, described user network system comprises:
Be used for user terminal that signal is carried out modulation, route and distributes;
Terminal equipment with described core network system interactive information;
Described user terminal is connected with terminal equipment.
6. system according to claim 5 is characterized in that, described user terminal comprises:
Be used for separator that the cable system information transmitted is separated and distributed;
Be used for cable base band communication modulation module that the information of separating is carried out modulation;
Be used for ethernet router in user terminal transmission information; And
The network local side that is used for connecting terminal equipment;
The processing module that is used for intelligent networking;
Described separator, cable base band communication modulation module, router, network local side are connected successively with processing module.
7. system according to claim 4 is characterized in that, described terminal equipment comprise at least computer, phone, notebook computer and television set one of them; Described computer, phone and notebook computer are connected described user terminal by Ethernet cable TV modulator-demodulator, home phone number net power line modem with the home wireless modulator-demodulator respectively; Described television set is connected with described user terminal by set-top box.
8. one kind is adopted the described system of claim 1 to realize that digital broadband merges the method for stack, is characterized in that described method may further comprise the steps:
Provide various accessive informations by described core network system; Described information comprises voice, data and the various information of propagating with image format;
Core extend web system utilizes GPON and EPON technology, and described information and access net system are carried out seamless fusion;
The channel that access net system will transmit information carry out spectrum division, multiplexing, mix and stack, and the information after will superposeing is transmitted between described core network system and user network system;
User network system and core network system interactive information, and described information distributed for the terminal equipment in the user network use.
9. method according to claim 8 is characterized in that, described access net system transmits described information between described core network system and user network system step specifically comprises:
The information track of transmission information is carried out spectrum division;
Wired information and wireless messages in the core network system is multiplexing, and the channel of the information of each section frequency band merged, superposes;
Bandwidth after the stack is distributed and transmitted;
Utilize channel coding technology that the information in the transmission course is carried out chnnel coding, and output.
10. method according to claim 9 is characterized in that, described user network system and core network system interactive information, and distribute the step of using for the terminal equipment in the user network specifically to comprise the described information:
The information of each section frequency band is separated;
Information after separating is carried out modulation;
With the information fusion after the modulation, distribute to terminal equipment.
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| CN102215191A (en) * | 2011-04-12 | 2011-10-12 | 北京傲天动联技术有限公司 | Ethernet over coax (EOC) multimode multiband composite transmission equipment |
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| CN112262551A (en) * | 2018-06-06 | 2021-01-22 | 日本电信电话株式会社 | Subscriber line terminal station apparatus and band allocation method |
| CN110401976A (en) * | 2019-08-27 | 2019-11-01 | 欧阳世杰 | Based on the base station distributed 5G gNB of Coaxial distribution network network and implementation method |
| CN113543155A (en) * | 2020-04-17 | 2021-10-22 | 国家广播电视总局广播电视科学研究院 | 5G network indoor coverage system and indoor coverage method based on wired network |
| CN113543155B (en) * | 2020-04-17 | 2024-02-23 | 国家广播电视总局广播电视科学研究院 | 5G network indoor coverage system and indoor coverage method based on wired network |
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