CN101494804B - Wired network bidirectional reconstruction system compatible with wideband and narrowband - Google Patents
Wired network bidirectional reconstruction system compatible with wideband and narrowband Download PDFInfo
- Publication number
- CN101494804B CN101494804B CN2009100469507A CN200910046950A CN101494804B CN 101494804 B CN101494804 B CN 101494804B CN 2009100469507 A CN2009100469507 A CN 2009100469507A CN 200910046950 A CN200910046950 A CN 200910046950A CN 101494804 B CN101494804 B CN 101494804B
- Authority
- CN
- China
- Prior art keywords
- signal
- cable
- broadband
- band
- narrowband
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a broadband narrowband compatible wired network bidirectional reforming system, which can satisfy operator by realizing large scale cover and access with low cost, and providing bidirectional interaction service rapidly. The technical scheme is: the system comprises: an office terminal equipment for obtaining mixed signal which is transmitted by coaxial cable access network; a relay equipment for signal jumpering; a system webmaster for mastering access schemes; and a terminal equipment. The relay equipment comprises a broadband narrowband bidirectional communication relay equipment, further comprises: a signal input port, a gateway module, a narrowband processing module, a broadband processing module, a frequency mixing module and a signal output port. The invention can be applied in digital television field.
Description
Technical field
The present invention relates to a kind of two-wayization of cable network modernization system, relate in particular to a kind of cable network bidirectional rebuilding system of broadband/narrowband compatibility.
Background technology
Along with the development of modulation technique and the expansion of wired Operator Specific Service scope, unidirectional cable TV can not satisfy business demand day by day.The particularly popularization of Digital Television, the vacant a large amount of band resources of cable TV network can developing value-added services.For supporting the two-way interactive business to carry out, all kinds of two-wayization modification schemes and product have been emerged on the market.
These products mainly are divided into base band and modulation two classes: 1, base band product, and technology realizes simple, and data-signal is directly sneaked in the coaxial cable, transmits with TV signal, user side uses low pass filter to receive data-signal.Owing to be baseband signal, anti-interference is poor, and transmission range is shorter, can't pass through common branch distributor, only is applicable to the Star Network structure.2, brewed product is modulated data-signal earlier at high frequency or low frequency, sneak into then in the coaxial cable, transmits with TV signal, and user side uses modulator-demodulator to receive data-signal.Signal anti-interference through ovennodulation is good, and transmission range is longer, applicable to polytype network configuration.
More than these bilateral networks transform products generally can both be for the user provides broadband access, but improvement cost is all than higher.Interactive service is carried out and is needed certain user base number and just can reach break even, but cable television operators are as transforming on a large scale by existing mode, infusion of financial resources can be very big, and the investment repayment phase can be very long, and this has hindered existing bilateral network and has transformed the product large-scale promotion.
And a large amount of unidirectional top box of digital machines have been used in the whole conversion of present ongoing Digital Television, do not have network interface, can't carry out the two-way interactive business.Be to realize the two-way interactive business, operator when large scale network is transformed, also need to change (or) newly-increased bidirectional digital television set top box.
Summary of the invention
The objective of the invention is to address the above problem, a kind of cable network bidirectional rebuilding system of wide band narrow band compatibility is provided, can fully satisfy low-cost realization of operator covers on a large scale and inserts, release the demand of two-way interactive business rapidly, and can " vitalize " a large amount of existing one-way digital television set-top box.
Technical scheme of the present invention is: the present invention has disclosed a kind of cable network bidirectional rebuilding system of broadband/narrowband compatibility, comprising:
Local side apparatus is finished the mixing of cable TV signal and data service signal, and mixed signal is transmitted by coaxial cable access network;
Trunking is finished the jumper connection of signal, and carries out service detach with the user by terminal equipment, and then finishes professional consumption;
System network management: access scheme is managed;
Terminal equipment;
Wherein trunking comprises the wide band narrow band bi-directional communication trunking, and this equipment further comprises:
Signal input port receives the mixed signal on the outer, coaxial cable;
Gateway module carries out demodulation to the data-signal after the modulation of input, output demodulated I P signal;
The arrowband processing module, based on the narrow-band communication system technology of cable TV with the ether data-signal through digital modulation to first radio frequency band, carry out the transmission of narrow band signal;
The broadband processing module, based on broadcast interaction coaxial network user access technology with the ether data-signal through digital modulation to second radio frequency band, mix the back with TV signal and realize the common cable transmission of broadcast interaction signal on coaxial cable, otherwise receive the modulated digital signal of separating, be converted to the ether data-signal by demodulation;
Frequency mixing module, the mode by frequency division multiplexing is modulated to different frequency bands so that transmit with the output of this broadband processing module and the output of this arrowband processing module on same coaxial cable;
Signal output port is transferred to the output of this frequency mixing module on the outside coaxial cable.
The cable network bidirectional rebuilding system of above-mentioned broadband/narrowband compatibility, wherein, the digital modulation in this arrowband processing module of this wide band narrow band bi-directional communication trunking is the MSK modulation system, it is output as the radiofrequency signal based on the MSK modulation.
The cable network bidirectional rebuilding system of above-mentioned broadband/narrowband compatibility, wherein, this first radio frequency band in this arrowband processing module of this wide band narrow band bi-directional communication trunking is the 900MHz frequency range.
The cable network bidirectional rebuilding system of above-mentioned broadband/narrowband compatibility, wherein, the digital modulation in this broadband processing module of this wide band narrow band bi-directional communication trunking is OFDM and qam mode, it is output as the radiofrequency signal based on OFDM and QAM modulation.
The cable network bidirectional rebuilding system of above-mentioned broadband/narrowband compatibility, wherein, this second radio frequency band in this broadband processing module of this wide band narrow band bi-directional communication trunking is 950～1050MHz frequency range.
The cable network bidirectional rebuilding system of above-mentioned broadband/narrowband compatibility, wherein, the communication protocol of this wide band narrow band bi-directional communication trunking is the fusion in equipment end of standard I P agreement and proprietary protocol, provide standard I P agreement to higher level equipment, subordinate equipment is realized the common appearance of proprietary protocol and standard I P agreement.
The cable network bidirectional rebuilding system of above-mentioned broadband/narrowband compatibility, wherein, this terminal equipment comprises:
USB two-way communication terminal equipment, based on broadcast interaction coaxial network user access technology, to set-top box, this equipment further comprises with cable TV signal and IP data-signal separated transmission:
The cable input interface, the mixed signal of transmitting in the receiving cable that comprises cable TV signal and IP data-signal;
Duplexer connects this cable input interface, according to the frequency difference in the mixed signal, is separated into the cable TV signal of low frequency frequency range and the IP data-signal of high-frequency band;
Radio-frequency module connects this duplexer, receives the output of the high-frequency band of this duplexer, realizes frequency-conversion processing;
Memory is used for configuration-system communication speed and storing communication agreement;
Communication chip connects this radio-frequency module and this memory, carries out demodulation to the received signal;
The USB coffret connects this communication chip and links to each other with the USB interface of set-top box, with the IP data of the high-frequency band after separating to set-top box;
The cable TV signal coffret links to each other with the tuner module of this duplexer and set-top box, and the cable TV signal of the low frequency frequency range after separating is transferred to set-top box.
The cable network bidirectional rebuilding system of above-mentioned broadband/narrowband compatibility, wherein, this USB two-way communication terminal equipment also comprises the USB firmware unit that is used to realize the USB transmission and is used to realize MAC layer baseband controller unit to the MAC layer-management of communication system.
The cable network bidirectional rebuilding system of above-mentioned broadband/narrowband compatibility, wherein, this USB two-way communication terminal equipment provides the two-way access based on computer and set-top box environment, realizes wideband data access service and set-top box value-added service.
The cable network bidirectional rebuilding system of above-mentioned broadband/narrowband compatibility, wherein, this USB coffret of this USB two-way communication terminal equipment also provides USB power supply passage.
The cable network bidirectional rebuilding system of above-mentioned broadband/narrowband compatibility, wherein, this communication chip of this USB two-way communication terminal equipment is a WIFI chip of following the 802.11a/b/G standard, the output signal of the frequency-conversion processing of this radio-frequency module is 2.4GHz.
The cable network bidirectional rebuilding system of above-mentioned broadband/narrowband compatibility, wherein, the cable TV signal of the low frequency frequency range after this duplexer of this USB two-way communication terminal equipment is handled is 0～860MHz, the IP data-signal of high-frequency band is 860～1050MHz.
The cable network bidirectional rebuilding system of above-mentioned broadband/narrowband compatibility, wherein, this terminal equipment also comprises:
The narrow-band bi-directional communication terminal equipment, comprise ARM control chip that is positioned at local side and a plurality of communication modules that link to each other with this ARM control chip, the ARM control chip is coordinated the operating state of each communication module, each communication module disposes one or more communication chips, communication chip of set-top box configuration of terminal, wherein communicate by the UDP host-host protocol in those communication chips between terminal and the local side, this ARM control chip carries out standard and description to this UDP host-host protocol.
The cable network bidirectional rebuilding system of above-mentioned broadband/narrowband compatibility, wherein, the data packet format between STB terminal and the local side is in this UDP host-host protocol of this narrow-band bi-directional communication terminal equipment: the field of the udp protocol of compression, based on a field, the data field of the reliable transport protocol of UDP; A field of the field of the data packet format in this UDP host-host protocol between local side and the acting server: IP, the udp protocol of compression, based on a field, the data field of the reliable transport protocol of UDP.
The cable network bidirectional rebuilding system of above-mentioned broadband/narrowband compatibility, wherein, the frame head form of the Frame in this UDP host-host protocol of this narrow-band bi-directional communication terminal equipment is:
Up frame head form is:
；
The descending frame head form is:
Wherein parameter S YN, ACK, FIN, RST are the connection status signs in the Transmission Control Protocol.
The cable network bidirectional rebuilding system of above-mentioned broadband/narrowband compatibility, wherein, this narrow-band bi-directional communication terminal equipment carries out data communication by serial ports and set-top box.
The present invention contrasts prior art following beneficial effect: the present invention is by installing the wide band narrow band bi-directional communication trunking at the trunking place, USB two-way communication terminal equipment and narrow-band bi-directional communication terminal equipment are installed at the terminal equipment place, can realize: (1) provides a kind of and covers cheaply and access way, is convenient to construction and large-scale promotion; (2) one-off construction is realized the access of broadband and arrowband under same covering; (3) can select broadband or narrow band access terminal for use according to the difference of business; (4) access terminal and to select RJ45, USB or serial ports for use according to the difference that connects peripheral hardware; (5) can make a large amount of existing one-way digital television set-top box realize the two-way interactive business.
Description of drawings
Fig. 1 is the structure chart of embodiment of the cable network bidirectional rebuilding system of broadband/narrowband compatibility of the present invention.
Fig. 2 is the structure chart of the embodiment of wide band narrow band bi-directional communication trunking of the present invention.
Fig. 3 is the hardware elementary diagram that USB two-way communication terminal equipment of the present invention is connected with set-top box.
Fig. 4 is the software principle figure that USB two-way communication terminal equipment of the present invention is connected with set-top box.
Fig. 5 is the schematic diagram of the embodiment of narrow-band bi-directional communication terminal equipment of the present invention.
Fig. 6 is the framework map of the DOC communication protocol of narrow-band bi-directional communication terminal equipment of the present invention.
Fig. 7 is the schematic diagram of the DOC communication protocol stack of narrow-band bi-directional communication terminal equipment of the present invention.
Fig. 8 is the schematic diagram of data packet format of the communication protocol of narrow-band bi-directional communication terminal equipment of the present invention.
Fig. 9 is the schematic diagram of frame head form of Frame of the communication protocol of narrow-band bi-directional communication terminal equipment of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 shows the structure of embodiment of the cable network bidirectional rebuilding system of broadband/narrowband compatibility of the present invention.See also Fig. 1, system comprises local side apparatus 1, trunking 2, system network management 3 and terminal equipment 4.Wherein local side apparatus 1 is finished the mixing of cable TV signal and data service signal, and mixed signal networks by coaxial cable and transmits.Trunking 2 is finished the jumper connection of signal, and carries out service detach with the user by terminal equipment 4, and then finishes professional consumption.3 pairs of access schemes of system network management manage.
Wide band narrow band bi-directional communication trunking 20 is installed at trunking 2 places, and Fig. 2 shows the structure of wide band narrow band bi-directional communication trunking 20.See also Fig. 2, comprise signal input port 200, gateway module 201, arrowband processing module 202, broadband processing module 203, frequency mixing module 204 and signal output port 205.
The cable TV signal that transmits on the signal input port 200 reception outer, coaxial cables and the mixed signal of data service signal.The mixed signal that gateway module 201 receives from signal input port 200 is carried out demodulation to the data-signal after the modulation of input, exports demodulated I P signal to arrowband processing module 202 and broadband processing module 203 respectively.
Because the local side performance of arrowband processing module is limited, need on up broadband processing module, filter packet, avoid useless packet to consume the resource of arrowband processing module: the arrowband local side can be configured in independently among the VLAN (VLAN), avoid the performance impact of other business to narrow-band communication system, the broadband processing module then filters out the broadcast packet of non-ARP (address resolution protocol).
Wide band narrow band bi-directional communication trunking 20 of the present invention has been realized the fusion in equipment end of standard I P agreement and proprietary protocol, be succession and development to the BIOC trunking, to on the IP agreement of standard is provided, to realizing the common appearance of proprietary protocol and standard I P agreement down, thereby the uniformity and the webmaster of equipment have been improved greatly.
The mixed signal of the IP data-signal that comprises cable TV signal that transmits in cable input interface 514 receiving cables.In duplexer 510, mixed signal according to the frequency difference of composition wherein, is separated into the cable TV signal of low frequency frequency range and the IP data-signal of high-frequency band.Usually, the cable TV signal of low frequency frequency range is 0～860MHz, and the IP data-signal of high-frequency band is 860～1050MHz.Cable TV signal coffret 515 links to each other with the tuner module 52 of duplexer 510 and set-top box, and the cable TV signal of the low frequency frequency range after separating is transferred to set-top box 52.The output of the high-frequency band of radio-frequency module 511 receiving duplexers 510, the effect of radio-frequency module 511 are to carry out raising frequency to the received signal, exactly frequency are risen to 2.4GHz, offer follow-up communication chip 512 and carry out demodulation, realize communication.Communication chip 512 is the WIFI chip of following the 802.11a/b/G standard in the present embodiment, and the signal of the high-frequency band that receives is carried out demodulation process.Memory 513 is used for the configuration-system communication speed, and the storing communication agreement.USB coffret 516 connects communication chips 512, and links to each other with the USB interface of set-top box, with the IP data of the high-frequency band after the separation to set-top box 52.
See also Fig. 4, USB two-way communication terminal equipment 51 comprises the USB firmware unit 517 that is used to realize the USB transmission and is used to realize MAC layer baseband controller unit 518 to the MAC layer-management of communication system.And set-top box comprises video application, network layer, user interface, USB driving, BIOC MAC layer, 2 layer function modules.Video application (VIDEO APPLICATION) refers to the application program on set-top box upper strata, and the network layer that can call lower floor realizes the network service.Network layer (NETWORK LAYER) is convenient to upper layer application and is called the network layer service, and network layer protocol is provided.User interface (UI) is the interface that enters of application program.USB drives (USBDRIVER) and is used to drive the USB bi-directional communication terminal apparatus.BIOC MAC layer is the MAC layer of USB bi-directional communication terminal apparatus, and mac-layer protocol is provided.2 layer function modules (L2FUNCTIONS) provide the correlation function of data link layer.
The running environment that USB drives in the USB two-way communication terminal equipment 51 among the present invention can be Microsoft's Window operating system, it also can be embedded OS, this makes device have cross-platform driving force, provide based on the two-way access under computer and the set-top box environment, carry out by same terminal realization wideband data access service and set-top box value-added service, make set-top box realize two-way access function fast.In addition, USB coffret 16 also provides USB power supply passage except transfer of data before.
This equipment 61 is to cooperate one-way set-top box to use the DOC communication system, to realize the data passback of set-top box.
The framework of the DOC communication protocol that this equipment 61 is utilized and DOC communication protocol stack are respectively as shown in Figure 6 and Figure 7.This equipment carries out data communication by serial ports and set-top box, and the mode of promptly utilizing serial ports to increase arrowband passback DOC terminal realizes two-way fast upgrading, thereby satisfies the needs of every two-way services function that set-top box increases day by day.This equipment has been realized bilateral network modification scheme cheaply by serial mode, characteristics according to serial communication, UDP host-host protocol in the communication chip of the present invention be a kind of with the relaying be separation to down privately owned, to the communication protocol of last standard, be called reliable UDP host-host protocol (R-UDP agreement).The defined data packet format of this reliable UDP host-host protocol as shown in Figure 8.Data packet format is divided into C-UDP/R-UDP protocol data packet format, the standard udp data packet format between C-UDP/R-UDP protocol data packet format, DOC local side and the acting server between set-top box and the DOC local side.Wherein the C-UDP/R-UDP protocol data packet format between set-top box and the DOC local side is divided into three sections: the field (R-UDP Head) based on the reliable transport protocol of UDP of a field of the udp protocol of the compression of 8 bytes (C-UDP Head), 4 bytes, the data field of 0～1500 byte.C-UDP/R-UDP protocol data packet format between DOC local side and the acting server is divided into four sections: the field (R-UDP Head) based on the reliable transport protocol of UDP of a field (C-UDP Head) of the udp protocol of the compression of the IP of 20 a bytes field (IP Head), 8 bytes, 4 bytes, the data field of 0～1500 byte.Standard udp data packet format is divided into three sections: UDP the field (UDP Head) of the IP of 20 a bytes field (IP Head), 8 bytes, the data field (Data) of 0～1504 byte.
Fig. 9 shows the frame head form of reliable UDP host-host protocol predetermined data frame of the present invention.See also Fig. 9, in the form of up frame head and descending frame head, wherein which communication module is parameter " determining of communication module " be used to determine to belong to, and parameter " application udp port " is exactly the serve port on the acting server, and different ports is distinguished different services.Parameter " length " and " verification and " are all calculated according to the udp protocol regulation.Parameter " SYN/ACK/FIN/RST " all is the connection status signs in the Transmission Control Protocol.Parameter " serial number " will increase by 1 through a data packet transmission.And parameter " acknowledged sequence number " is used for the whole packet that receives is confirmed.
This equipment 61 is that the DOC technology is combined with set-top box, cable TV signal in the cable is separated with the IP data-signal, and by serial ports with the IP data-signal, by the CATV transmission interface cable TV signal is sent to set-top box, thereby satisfies the demand of passback of User IP data and interactive television business.The access logic of equipment is as follows: when the starting up of terminal state, the registration that is at war with of terminal receives local side after start log-in command, obtain an effective time slicing after succeeding in registration, as the time channel of this terminal drawn game end communication, this hour of log-on sheet has fixing lease time.When normal operating conditions, whether local side has data upload according to timeslice inquiry and registration terminal, and the data data that then receiving terminal is uploaded in this time slicing of time slicing are arranged, and all the other registration terminals wait for that the timeslice of oneself arrives.If this stylish terminal powers on, local side can send the permission log-in command to new terminal in independent timeslice, receive the registration of new terminal.If local side has data down transmission to give relevant terminal, local side can insert a new timeslice after deadline sheet inquiry, be used for sending data to corresponding terminal, and after transmission was finished, this timeslice was nullified.Working machine is shaped on: obtain a timeslice according to competition mechanism from local side after (1) each terminal powers on, the local side management is accepted in joining day sheet circulation; (2) local side is according to timeslice, and whether inquiry terminal has data upload, manages each terminal; (3) local side receives new endpoint registration in independent timeslice, and the local side management is accepted in the terminal joining day sheet circulation that the registration back is new; (4) if there are data to descend to pass, local side inserts new timeslice after the current time, the sheet query manipulation was finished, and down-transmitting data is given corresponding terminal; (5) narrowband systems any time all has only a terminal and local side to carry out up or downgoing communication.
The cable network bidirectional rebuilding system of broadband/narrowband compatibility of the present invention has following several advantages:
1, the present invention can satisfy the access of wide-band terminal and arrowband terminal simultaneously after a bilateral network is transformed, and can realize fast extensive the covering and access.
2, this unified networking mode of the present invention adopts the frequency division multiplexing pattern, and with broadband and narrow band subscriber terminal, and multiple interactive service realizes by a hfc plant, and the mixing access way of width unification is provided for operator. Like this Operator Specific Service being carried out has greater flexibility, can fast open broadening band and the interactive service of arrowband, and the user can select different end products voluntarily, does not need to increase in addition to cover cost.
3, the compatible broadband of system of the present invention and narrow band access terminal, so local side apparatus also comprises Wideband module (WOC) and arrowband module (DOC). Wideband module is realized existing wide-band modulation mode such as BIOC, Homeplug, Moca, Docsis etc., arrowband modulation system such as FSK with the arrowband module with existing different modulation system.
Claims (14)
1. the cable network bidirectional rebuilding system of a broadband/narrowband compatibility comprises:
Local side apparatus is finished the mixing of cable TV signal and data service signal, and mixed signal is transmitted by coaxial cable access network;
Trunking is finished the jumper connection of signal, and carries out service detach with the user by terminal equipment, and then finishes professional consumption;
System network management: access scheme is managed;
Terminal equipment, this terminal equipment further comprises:
USB two-way communication terminal equipment, based on broadcast interaction coaxial network user access technology, to set-top box, this USB two-way communication terminal equipment further comprises with cable TV signal and IP data-signal separated transmission:
The cable input interface, the mixed signal of transmitting in the receiving cable that comprises cable TV signal and IP data-signal;
Duplexer connects this cable input interface, according to the frequency difference in the mixed signal, is separated into the cable TV signal of low frequency frequency range and the IP data-signal of high-frequency band;
Radio-frequency module connects this duplexer, receives the output of the high-frequency band of this duplexer, realizes frequency-conversion processing;
Memory is used for configuration-system communication speed and storing communication agreement;
Communication chip connects this radio-frequency module and this memory, carries out demodulation to the received signal;
The USB coffret connects this communication chip and links to each other with the USB interface of set-top box, with the IP data of the high-frequency band after separating to set-top box;
The cable TV signal coffret links to each other with the tuner module of this duplexer and set-top box, and the cable TV signal of the low frequency frequency range after separating is transferred to set-top box;
The narrow-band bi-directional communication terminal equipment, comprise ARM control chip that is positioned at local side and a plurality of communication modules that link to each other with this ARM control chip, the ARM control chip is coordinated the operating state of each communication module, each communication module disposes one or more communication chips, communication chip of set-top box configuration of terminal, wherein communicate by the UDP host-host protocol in those communication chips between terminal and the local side, this ARM control chip carries out standard and description to this UDP host-host protocol;
Wherein trunking comprises the wide band narrow band bi-directional communication trunking, and this wide band narrow band bi-directional communication trunking further comprises:
Signal input port receives the mixed signal on the outer, coaxial cable;
Gateway module carries out demodulation to the data-signal after the modulation of input, output demodulated I P signal;
The arrowband processing module, based on the narrow-band communication system technology of cable TV with the ether data-signal through digital modulation to first radio frequency band, carry out the transmission of narrow band signal;
The broadband processing module, based on broadcast interaction coaxial network user access technology with the ether data-signal through digital modulation to second radio frequency band, mix the back with TV signal and realize the common cable transmission of broadcast interaction signal on coaxial cable, otherwise receive the modulated digital signal of separating, be converted to the ether data-signal by demodulation;
Frequency mixing module, the mode by frequency division multiplexing is modulated to different frequency bands so that transmit with the output of this broadband processing module and the output of this arrowband processing module on same coaxial cable;
Signal output port is transferred to the output of this frequency mixing module on the outside coaxial cable.
2. the cable network bidirectional rebuilding system of broadband/narrowband compatibility according to claim 1, it is characterized in that, digital modulation in this arrowband processing module of this wide band narrow band bi-directional communication trunking is the MSK modulation system, and it is output as the radiofrequency signal based on the MSK modulation.
3. the cable network bidirectional rebuilding system of broadband/narrowband compatibility as claimed in claim 2 is characterized in that, this first radio frequency band in this arrowband processing module of this wide band narrow band bi-directional communication trunking is the 900MHz frequency range.
4. the cable network bidirectional rebuilding system of broadband/narrowband compatibility as claimed in claim 1, it is characterized in that, digital modulation in this broadband processing module of this wide band narrow band bi-directional communication trunking is OFDM and qam mode, and it is output as the radiofrequency signal based on OFDM and QAM modulation.
5. the cable network bidirectional rebuilding system of broadband/narrowband compatibility as claimed in claim 4 is characterized in that, this second radio frequency band in this broadband processing module of this wide band narrow band bi-directional communication trunking is 950～1050MHz frequency range.
6. the cable network bidirectional rebuilding system of broadband/narrowband compatibility as claimed in claim 1, it is characterized in that, the communication protocol of this wide band narrow band bi-directional communication trunking is the fusion in equipment end of standard I P agreement and proprietary protocol, provide standard I P agreement to higher level equipment, subordinate equipment is realized the common appearance of proprietary protocol and standard I P agreement.
7. the cable network bidirectional rebuilding system of broadband/narrowband compatibility as claimed in claim 1, it is characterized in that this USB two-way communication terminal equipment also comprises the USB firmware unit that is used to realize the USB transmission and is used to realize MAC layer baseband controller unit to the MAC layer-management of communication system.
8. the cable network bidirectional rebuilding system of broadband/narrowband compatibility as claimed in claim 1 is characterized in that, this USB two-way communication terminal equipment provides the two-way access based on computer and set-top box environment, realizes wideband data access service and set-top box value-added service.
9. the cable network bidirectional rebuilding system of broadband/narrowband compatibility as claimed in claim 1 is characterized in that, this USB coffret of this USB two-way communication terminal equipment also provides USB power supply passage.
10. the cable network bidirectional rebuilding system of broadband/narrowband compatibility as claimed in claim 1, it is characterized in that, this communication chip of this USB two-way communication terminal equipment is a WIFI chip of following the 802.11a/b/G standard, and the output signal of the frequency-conversion processing of this radio-frequency module is 2.4GHz.
11. the cable network bidirectional rebuilding system of broadband/narrowband compatibility as claimed in claim 1, it is characterized in that, the cable TV signal of the low frequency frequency range after this duplexer of this USB two-way communication terminal equipment is handled is 0～860MHz, and the IP data-signal of high-frequency band is 860～1050MHz.
12. the cable network bidirectional rebuilding system of broadband/narrowband compatibility as claimed in claim 1, it is characterized in that the data packet format in this UDP host-host protocol of this narrow-band bi-directional communication terminal equipment between STB terminal and the local side is: the field of the udp protocol of compression, based on a field, the data field of the reliable transport protocol of UDP; A field of the field of the data packet format in this UDP host-host protocol between local side and the acting server: IP, the udp protocol of compression, based on a field, the data field of the reliable transport protocol of UDP.
13. the cable network bidirectional rebuilding system of broadband/narrowband compatibility as claimed in claim 12 is characterized in that, the frame head form of the Frame in this UDP host-host protocol of this narrow-band bi-directional communication terminal equipment is:
Up frame head form is:
The descending frame head form is:
Wherein parameter S YN, ACK, FIN, RST are the connection status signs in the Transmission Control Protocol.
14. the cable network bidirectional rebuilding system of broadband/narrowband compatibility as claimed in claim 1 is characterized in that this narrow-band bi-directional communication terminal equipment carries out data communication by serial ports and set-top box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100469507A CN101494804B (en) | 2009-03-03 | 2009-03-03 | Wired network bidirectional reconstruction system compatible with wideband and narrowband |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100469507A CN101494804B (en) | 2009-03-03 | 2009-03-03 | Wired network bidirectional reconstruction system compatible with wideband and narrowband |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101494804A CN101494804A (en) | 2009-07-29 |
| CN101494804B true CN101494804B (en) | 2011-06-15 |
Family
ID=40925154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100469507A Active CN101494804B (en) | 2009-03-03 | 2009-03-03 | Wired network bidirectional reconstruction system compatible with wideband and narrowband |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101494804B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102098467B (en) * | 2010-12-07 | 2012-12-26 | 青岛海信宽带多媒体技术有限公司 | Method and device for realizing bilateral control of television terminal |
| CN102170411A (en) * | 2011-05-25 | 2011-08-31 | 杭州蓝联科技有限公司 | Gateway applied to radio and television network |
| CN103065445B (en) * | 2012-12-10 | 2014-08-20 | 杭州讯久科技有限公司 | Method of external interactive intercommunication based on radio-frequency technique |
| CN106572318A (en) * | 2016-10-19 | 2017-04-19 | 深圳市茁壮网络股份有限公司 | Cable television network fiber signal processing device and processing method |
| CN110677170B (en) * | 2019-09-18 | 2022-06-17 | 湖南智领通信科技有限公司 | Ad hoc network communication device and method with wide-band and narrow-band integration |
| CN113225120B (en) * | 2021-05-10 | 2023-05-30 | 国网江苏省电力有限公司泰州供电分公司 | Relay device with wide-narrow band fusion, data processing method and system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1182818A2 (en) * | 2000-08-22 | 2002-02-27 | Thomson Licensing S.A. | Communication parameter adjustment system in an Internet compatible bi-directional communication system |
| CN1429004A (en) * | 2001-12-25 | 2003-07-09 | 北京乙太创新数码科技有限公司 | User access device of wide-band co-axial symmetrical modem |
| CN1615013A (en) * | 2003-11-05 | 2005-05-11 | 华为技术有限公司 | System for realizing wideband inserting in wireless Tv-set network |
-
2009
- 2009-03-03 CN CN2009100469507A patent/CN101494804B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1182818A2 (en) * | 2000-08-22 | 2002-02-27 | Thomson Licensing S.A. | Communication parameter adjustment system in an Internet compatible bi-directional communication system |
| CN1429004A (en) * | 2001-12-25 | 2003-07-09 | 北京乙太创新数码科技有限公司 | User access device of wide-band co-axial symmetrical modem |
| CN1615013A (en) * | 2003-11-05 | 2005-05-11 | 华为技术有限公司 | System for realizing wideband inserting in wireless Tv-set network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101494804A (en) | 2009-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101494804B (en) | Wired network bidirectional reconstruction system compatible with wideband and narrowband | |
| CN101272325B (en) | Family wireless interconnected broadcast base station | |
| US11843474B2 (en) | Apparatus and methods for providing high-capacity data services over a content delivery network | |
| US20060256799A1 (en) | Broadband local area full-service backbone network | |
| CN102006503A (en) | Wideband data communication system and method for integrating IP network and cable television network | |
| CN101258711A (en) | Device, system, and method for transporting data using combined broadband and legacy network infrastructures | |
| CN103037249A (en) | Integrated digital television and data communication method thereof | |
| CN201893798U (en) | Coaxial access network unit equipment of four Ethernet ports | |
| CN101568005A (en) | CATV synthetic access system based on WiFi technology | |
| CN101990123B (en) | Set top box device and method for realizing triple play function | |
| CN102035704A (en) | Wideband access system based on HFC (Hybrid Fiber Coaxial) network | |
| CN103152634A (en) | Digital video broadcasting (DVB) digital television wireless household gateway system | |
| CN101500104B (en) | Narrow-band bi-directional communication terminal apparatus | |
| CN102186047B (en) | Coaxial-cable-based Internet protocol television (IPTV) home network system and data processing method thereof | |
| CN102790709A (en) | Coaxial access network unit device with WIFI (wireless fidelity) | |
| CN101325650B (en) | Sound-video receiving equipment capable of being compatible (with) a plurality of access modes | |
| CN101510947A (en) | USB bidirectional communication terminal device | |
| US8879587B2 (en) | Method and apparatus for coaxial cable based broadcast and communication convergence in home network | |
| US11025450B2 (en) | Cable media converter management method, apparatus, and system | |
| CN203352727U (en) | DVB digital television wireless household gateway system | |
| CN1787519B (en) | Apparatus for realizing data transmitting and data access system thereof | |
| CN201210727Y (en) | CATV synthetic access system | |
| US10277469B2 (en) | Method and system for a wide-bandwidth, on-premises network | |
| CN203279204U (en) | Eoc terminal | |
| CN101917650B (en) | User preposition equipment for heterogeneous network fusion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI YUNSHI TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: TIANBAI WIDEBAND NETWORK SCIENCE AND TECHNOLOGY (SHANGHAI) CO., LTD. Effective date: 20130116 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201103 XUHUI, SHANGHAI TO: 201800 JIADING, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130116 Address after: 201800 Shanghai city Jiading District town of Jiading Bole Road No. 70 building 2008 room 10 Patentee after: Shanghai Cloud Vision Networks Technology Co., Ltd. Address before: 201103, building 9, Hechuan building, No. 2016, Shanghai, Yishan Road Patentee before: Tianbai Broadband Network Technology (Shanghai) Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201800 Shanghai city Jiading District town of Jiading Bole Road No. 70 building 2008 room 10 Patentee after: Shanghai Cloud Vision Networks Technology Co., Ltd. Address before: 201800 Shanghai city Jiading District town of Jiading Bole Road No. 70 building 2008 room 10 Patentee before: Shanghai Cloud Vision Networks Technology Co., Ltd. |