CN101123604A - A method for realizing virtual private network in wired digital TV network - Google Patents
A method for realizing virtual private network in wired digital TV network Download PDFInfo
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- CN101123604A CN101123604A CNA2006100369670A CN200610036967A CN101123604A CN 101123604 A CN101123604 A CN 101123604A CN A2006100369670 A CNA2006100369670 A CN A2006100369670A CN 200610036967 A CN200610036967 A CN 200610036967A CN 101123604 A CN101123604 A CN 101123604A
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Abstract
The invention relates to a virtual private network implementation method on a digital cable television network, which belongs to the digital television art field. The method is to establish a virtual private network with an internet, a DVB broadband IP router server, a DVB broadband IP gateway server, a QAM modulator, a digital cable television network, a digital television receiving card and a computer terminal jointly. The computer terminal sets up an IP tunnel with the DVB broadband IP router server, and transmits an upstream IP message to a local area network at a front end of the digital cable television network through the IP tunnel. The downstream IP message is broadcasted by the DVB broadband IP gateway server and the QAM modulator through a digital cable television network. The digital television receiving card receives MPEG-2 transmission stream,which is encapsulated with the downstream IP message, and transmits to the computer terminal. The downstream IP message adopts a DVB multi-protocol encapsulation data broadcasting art to carry out the encapsulation.
Description
Technical field
The present invention relates to a kind of IP tunneling that on Cable Network, utilizes and transmit the method that up IP message and DVB multi-protocols encapsulation of data broadcast technology broadcast downstream IP message are realized Virtual Private Network.Belong to the digital television techniques field.
Background technology
Cable Network has abundant downstream transmission bandwidth resource, and it adopts the DVB broadcast technology to provide digital audio/video and data service for the terminal use.DVB multi-protocols encapsulation of data broadcast technology can be encapsulated in the downstream IP message of the miscellaneous service server in the Cable Network front end (as IP-based ordering server) output in the mpeg 2 transport stream and be broadcast to terminal equipment.
In the terminal equipment of Cable Network, the terminal that has Digital Television receiving card has had the ability that the internet inserts.But the miscellaneous service server in the Cable Network front end all in the front end local area network (LAN), therefore have the terminal of Digital Television receiving card can't be directly and these service servers carry out interactive communication.The up IP message that IP tunneling can send the terminal that has Digital Television receiving card directly is sent in the Cable Network front end local area network (LAN) and by the miscellaneous service server by IP tunnel and receives.
The present invention is exactly at utilizing IP tunneling to transmit the solution of up IP message and the proposition of DVB multi-protocols encapsulation of data broadcast technology broadcast downstream IP message realization Virtual Private Network on Cable Network.
Summary of the invention
The method that realizes Virtual Private Network on Cable Network that the present invention proposes can and have between the terminal of Digital Television receiving card at Cable Network front end local area network (LAN) and realize Virtual Private Network.Thereby can provide as multiple interactive broadband services such as IP-based video request programs for terminal by the broadband downstream channel of Cable Network.
The present invention makes the problems referred to above be solved by the following technical programs.The up IP message of terminal sends in the Cable Network front end local area network (LAN) by IP tunnel.And by service server reception processing.The downstream IP message of service server output is exported by Cable Network broadcasting by DVB broadband IP gateway server and QAM modulator.Digital Television receiving card sends terminal to after receiving the mpeg 2 transport stream that is packaged with downstream IP message.
Describe technical scheme of the present invention below in detail.
The method that realizes Virtual Private Network on Cable Network that the present invention proposes makes up Virtual Private Network jointly by internet, DVB broadband IP routing server, DVB broadband IP gateway server, QAM modulator and Cable Network, Digital Television receiving card and terminal.Terminal transmits up IP message by the IP tunnel with the foundation of DVB broadband IP routing server to Cable Network front end local area network (LAN).Downstream IP message is exported by Cable Network broadcasting by DVB broadband IP gateway server and QAM modulator.Digital Television receiving card sends terminal to after receiving the mpeg 2 transport stream that is packaged with downstream IP message.Downstream IP message adopts DVB multi-protocols encapsulation of data broadcast technology to encapsulate.
Description of drawings
Fig. 1 explicit declaration the general characteristic of the inventive method, it has been described based on internet, DVB broadband IP routing server, DVB broadband IP gateway server, QAM modulator and Cable Network, Digital Television receiving card and terminal and has made up Virtual Private Network jointly.
Fig. 2 has shown that the concrete system in the inventive method connects and the complete procedure of Virtual Private Network work.
Below in conjunction with concrete embodiment the present invention is described in further detail.
Embodiment
As shown in Figure 1, Virtual Private Network comprises internet, DVB broadband IP routing server, DVB broadband IP gateway server, QAM modulator and Cable Network, Digital Television receiving card and terminal.
The internet: the internet is made up of various network device.Can communicate connection by ICP/IP protocol between the equipment.
DVB broadband IP routing server: the up IP message that receives calculation machine terminal by IP tunnel.The up IP message of terminal is transmitted to corresponding D VB broadband IP gateway server by IP tunnel.
DVB broadband IP gateway server: the up IP message of terminal is forwarded in the Cable Network front end local area network (LAN).And the downstream IP message that will return to terminal sends the QAM modulator to after adopting DVB multi-protocols encapsulation of data broadcast technology to be packaged into mpeg 2 transport stream.
The QAM modulator: the QAM modulator is modulated at mpeg 2 transport stream on the radiofrequency signal with the QAM modulation technique.
Cable Network: Cable Network is mixed various radiofrequency signals through the output of QAM modulator and broadcasting output.
Digital Television receiving card: Digital Television receiving card receives the cable digital TV radiofrequency signal.The cable digital TV radiofrequency signal is carried out channel demodulation output mpeg 2 transport stream.Mpeg 2 transport stream sends terminal to by the USB interface or the pci interface of Digital Television receiving card.
Terminal: terminal is connected with the internet by Ethernet card.Be connected with Digital Television receiving card by USB interface or pci interface.Terminal requires to have the Virtual Private Network adapter.The Virtual Private Network adapter sends up IP message on IP tunnel.And the downstream IP message of reception DVB multi-protocols encapsulation from mpeg 2 transport stream.
As shown in Figure 2, the concrete steps of realization Virtual Private Network are as follows.
The first step: terminal is set up the IP tunnel that TCP is connected by the internet with DVB broadband IP routing server;
Second step: terminal sends up IP message to DVB broadband IP routing server on IP tunnel;
The 3rd step: DVB broadband IP routing server is set up the IP tunnel that TCP is connected by cable digital TV front end local area network (LAN) with DVB broadband IP gateway server;
The 4th step: the up IP message that DVB broadband IP routing server will receive sends to corresponding D VB broadband IP gateway server;
The 5th step: the up IP message that DVB broadband IP gateway server will receive sends in the cable digital TV front end local area network (LAN);
The 6th step; DVB broadband IP gateway server is connected with the QAM modulator by ASI line or ethernet line;
The 7th step: DVB broadband IP gateway server receives the downstream IP message in the cable digital TV front end local area network (LAN).The downstream IP message that receives is encapsulated in the mpeg 2 transport stream.And send to the QAM modulator;
The 8th step: be connected with coaxial wire between the blender in the radio frequency interface of QAM modulator and the Cable Network.The mpeg 2 transport stream message that the QAM modulator will be packaged with downstream IP message is modulated into radiofrequency signal.The radiofrequency signal of QAM modulator output is through Cable Network broadcasting output;
The 9th step: Digital Television receiving card receives the cable digital TV radiofrequency signal.The cable digital TV radiofrequency signal is carried out channel demodulation output mpeg 2 transport stream.Mpeg 2 transport stream sends terminal to by the USB interface or the pci interface of Digital Television receiving card;
The tenth step: terminal receives the downstream IP message of DVB multi-protocols encapsulation from mpeg 2 transport stream.
In sum, realized Virtual Private Network in Cable Network in the method that realizes Virtual Private Network on the Cable Network.Terminal can carry out interactive communication with the miscellaneous service server in the cable digital TV front end local area network (LAN) by Virtual Private Network.
Claims (1)
1. a method that realizes Virtual Private Network on Cable Network is characterized in that: make up Virtual Private Network jointly by internet, DVB broadband IP routing server, DVB broadband IP gateway server, QAM modulator and Cable Network, Digital Television receiving card and terminal.Terminal transmits up IP message by the IP tunnel with the foundation of DVB broadband IP routing server to Cable Network front end local area network (LAN).Downstream IP message is exported by Cable Network broadcasting by DVB broadband IP gateway server and QAM modulator.Digital Television receiving card sends terminal to after receiving the mpeg 2 transport stream that is packaged with downstream IP message.Downstream IP message adopts DVB multi-protocols encapsulation of data broadcast technology to encapsulate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100369670A CN101123604A (en) | 2006-08-08 | 2006-08-08 | A method for realizing virtual private network in wired digital TV network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100369670A CN101123604A (en) | 2006-08-08 | 2006-08-08 | A method for realizing virtual private network in wired digital TV network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101123604A true CN101123604A (en) | 2008-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2006100369670A Pending CN101123604A (en) | 2006-08-08 | 2006-08-08 | A method for realizing virtual private network in wired digital TV network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106027418A (en) * | 2016-07-08 | 2016-10-12 | 深圳市茁壮网络股份有限公司 | On-demand method for increasing bandwidth utilization rate |
| CN106911676A (en) * | 2017-02-10 | 2017-06-30 | 北京吉视汇通科技有限责任公司 | Multimedia network data processing system |
-
2006
- 2006-08-08 CN CNA2006100369670A patent/CN101123604A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106027418A (en) * | 2016-07-08 | 2016-10-12 | 深圳市茁壮网络股份有限公司 | On-demand method for increasing bandwidth utilization rate |
| CN106911676A (en) * | 2017-02-10 | 2017-06-30 | 北京吉视汇通科技有限责任公司 | Multimedia network data processing system |
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Addressee: Song Baoyun Document name: Notification that Application Deemed to be Withdrawn |
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Open date: 20080213 |