CN107395482A - A kind of unidirectional bridge of COFDM and its IP data transferring methods - Google Patents
A kind of unidirectional bridge of COFDM and its IP data transferring methods Download PDFInfo
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- CN107395482A CN107395482A CN201710496635.9A CN201710496635A CN107395482A CN 107395482 A CN107395482 A CN 107395482A CN 201710496635 A CN201710496635 A CN 201710496635A CN 107395482 A CN107395482 A CN 107395482A
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- Prior art keywords
- cofdm
- data
- bridges
- main frame
- transmitting terminal
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4604—LAN interconnection over a backbone network, e.g. Internet, Frame Relay
- H04L12/462—LAN interconnection over a bridge based backbone
- H04L12/4625—Single bridge functionality, e.g. connection of two networks over a single bridge
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2649—Demodulators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
- H04L61/103—Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention discloses a kind of unidirectional bridges of COFDM and its IP data transferring methods, and the unidirectional bridges of COFDM send main frame, COFDM bridges transmitting terminal, COFDM bridges receiving terminal and IP data receiver main frames by IP data and formed；The transmitting terminal that IP data send main frame is connected with the signal input port of COFDM bridge transmitting terminals；The signal output port of COFDM bridge transmitting terminals is connected with the signal input port of COFDM bridge receiving terminals；The receiving terminal connection COFDM bridge receiving terminals of IP data receiver main frames；IP data send main frame by COFDM bridges transmitting terminal and COFDM bridges receiving terminal to IP data receiver main frame one-way transmission IP data.The present invention realizes the video and audio and data transfer of network interface by the way of one-way transmission, it is possible to provide transparent unilateral network transmission link, greatlys save cost, is brought convenience to user, improves Consumer's Experience.
Description
Technical field
The present invention relates to COFDM technical fields, and in particular to a kind of unidirectional bridge of COFDM and its IP data transferring methods.
Background technology
Using the wireless image transmission scheme of COFDM technologies, because with good non line of sight transmission and high speed mobile transmission
Performance, it is widely used in fields such as video monitorings.It is existing to carry out video, voice-and-data using COFDM technologies
Transmission mode have two kinds：
1st, the mode of one-way transmission, the video and audio access way that COFDM equipment provides, which has plenty of, accesses original video and audio
Signal, such as composite video signal or HDMI video；Also some has the interface that TS flows or ASI flows, but does not possess
Network interface accesses, and can not provide transparent unilateral network transmission link；
2nd, dual transfer mode, COFDM equipment provide the video and audio sum of network interface by the way of transmitted in both directions
According to transmission.
COFDM transmission technologys are widely used in the occasion of video and audio one-way wireless transmission at present, wherein many users
Video and audio is by network transmission, but the only COFDM wireless devices of transmitted in both directions can provide network interface at present, single
Network interface is not providing to the COFDM wireless devices of transmission, and the price of bidirectional transmission devices is at least unidirectional transmission equipment
2 times, this just brings very big inconvenience to user.
The content of the invention
It can be realized it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of by way of one-way transmission
The video and audio and data transfer of network interface, save cost, the unidirectional bridges of COFDM brought convenience to user.
Another object of the present invention is to overcome the deficiencies in the prior art, there is provided a kind of IP data of the unidirectional bridges of COFDM
Transfer approach.
Technical scheme is as follows：A kind of unidirectional bridges of COFDM, send main frame by IP data, COFDM bridges are launched
End, COFDM bridges receiving terminal and IP data receiver main frames are formed；The IP data send the transmitting terminal and COFDM nets of main frame
The signal input port of bridge transmitting terminal is connected, and the ARP that the COFDM bridges transmitting terminal sends main frame according to the IP data please
IP address and the IP address of COFDM bridges transmitting terminal itself in asking match；The signal output of the COFDM bridges transmitting terminal
Port is connected with the signal input port of COFDM bridge receiving terminals；The receiving terminal connection COFDM of the IP data receivers main frame
Bridge receiving terminal；The IP data send main frame by the COFDM bridges transmitting terminal and COFDM bridges receiving terminal to the IP
Data receiver main frame one-way transmission IP data.
Further, the COFDM bridges transmitting terminal includes the first IP processors, is connected respectively with the first IP processors
First network interface and COFDM modulators；The first IP processors access the IP data by the first network interface
Send main frame；The first IP processors receive the IP data and send the IP data that main frame is sent and adjusted by the COFDM
COFDM bridge receiving terminals are transmitted into after device modulation processed.
Further, the COFDM bridges transmitting terminal receives through D/A converter and upconverter to the COFDM bridges
End sends radiofrequency signal.
Further, the COFDM bridges transmitting terminal uses fpga chip, the fpga chip include IP agreement processing,
Code stream synchronization, rate adaptation, energy dissipation, RS codings, outer intertexture, convolutional encoding, interior intertexture, constellation mapping, frame adaptation,
COFDM modulation, protection interval insertion.
Further, the COFDM bridges receiving terminal includes the 2nd IP processors, is connected respectively with the 2nd IP processors
COFDM demodulators and the second network interface；The COFDM demodulators are demodulated to the IP data received；2nd IP
Processor sends the packet that demodulation obtains to IP data receiver main frames by the second network interface.
Further, the downconverted device input radio frequency signal of the COFDM demodulators.
A kind of IP data transferring methods of the unidirectional bridges of COFDM, including step：
A, IP data send main frame and send ARP request to COFDM bridges transmitting terminal；
B, after COFDM bridges transmitting terminal receives the ARP request that IP data send main frame, own MAC address will be included
ARP, which is replied message, sends back IP data transmission main frame；
C, IP data send main frame and send IP data to COFDM bridges transmitting terminal；
D, after COFDM bridges transmitting terminal receives IP data, every byte of frame 188 is reassembled into again after IP data are split
Packet, carry out COFDM modulation and transmitting；
E, COFDM bridges receiving terminal sends the ARP request with IP data receiver host ip values to IP data receivers main frame；
F, after IP data receivers main frame receives the ARP request of COFDM bridge receiving terminals, COFDM bridges receiving terminal will solve
Adjust obtained packet to be reassembled into the IP packets of the IP address comprising IP data receiver main frames and MAC Address, be sent to
IP data receiver main frames.
Further, in step e, after COFDM bridge receiving terminals receive response, the MAC of IP data receiver main frames is recorded
Address.
Relative to prior art, the beneficial effects of the present invention are：The unidirectional bridges of a kind of COFDM of the present invention, by 4 portions
It is grouped into, IP data send main frame, COFDM bridges transmitting terminal, COFDM bridges receiving terminal and IP data receiver main frames, the present invention
The video and audio and data transfer of network interface are realized by the way of one-way transmission, it is possible to provide transparent unilateral network chain
Road, without using the higher bidirectional transmission devices of price can provide network interface access, greatly save cost, to user with
To facilitate, Consumer's Experience is improved.
Brief description of the drawings
Fig. 1 is a kind of theory diagram of the unidirectional bridges of COFDM described in the embodiment of the present invention；
Fig. 2 is the theory diagram of COFDM bridges transmitting terminal described in the embodiment of the present invention；
Fig. 3 is the theory diagram of fpga chip described in the embodiment of the present invention；
Fig. 4 is the theory diagram of COFDM bridges receiving terminal described in the embodiment of the present invention；
Fig. 5 is one of flow chart of IP data transferring methods of the unidirectional bridges of COFDM described in the embodiment of the present invention；
Fig. 6 is the two of the flow chart of the IP data transferring methods of the unidirectional bridges of COFDM described in the embodiment of the present invention；
Fig. 7 is the three of the flow chart of the IP data transferring methods of the unidirectional bridges of COFDM described in the embodiment of the present invention；
Fig. 8 is the four of the flow chart of the IP data transferring methods of the unidirectional bridges of COFDM described in the embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in figure 1, the present invention a kind of unidirectional bridges of COFDM, by IP data send main frame, COFDM bridges transmitting terminal,
COFDM bridges receiving terminal and IP data receiver main frames are formed, and IP data send the transmitting terminal and COFDM bridge transmitting terminals of main frame
Signal input port be connected, the signal of the signal output ports of COFDM bridge transmitting terminals and COFDM bridge receiving terminals inputs
Port is connected, and the receiving terminal connection COFDM bridge receiving terminals of IP data receiver main frames, IP data send main frame and pass through COFDM
Bridge transmitting terminal and COFDM bridges receiving terminal are to IP data receiver main frame one-way transmission IP data.
Wherein, refer to Fig. 1, Fig. 2, COFDM bridges transmitting terminal include the first IP processors, respectively with the first IP processors
The first network interface and COFDM modulators of connection；First IP processors access IP data by first network interface and send master
Machine, the first network interface use RJ45 network interfaces；First IP processors receive IP data and send the IP numbers that main frame is sent
According to and by sending radiofrequency signal to COFDM bridges receiving terminal through D/A converter and upconverter after COFDM modulators modulates.
The present embodiment, COFDM bridges transmitting terminal use fpga chip, refer to Fig. 3, and the fpga chip is included at IP agreement
Reason, code stream synchronization, rate adaptation, energy dissipation, RS codings, outer intertexture, convolutional encoding, interior intertexture, constellation mapping, frame adaptation,
COFDM modulation, protection interval insertion.
Fig. 1, Fig. 4 are refer to, COFDM bridges receiving terminal includes the 2nd IP processors, is connected respectively with the 2nd IP processors
COFDM demodulators and the second network interface；The downconverted device input radio frequency signal of COFDM demodulators, and demodulated by COFDM
Device is demodulated to the IP data received；2nd IP processors send the packet that demodulation obtains by the second network interface
To IP data receiver main frames, second network interface uses RJ45 network interfaces.
The IP data transferring methods of the unidirectional bridges of COFDM of the present invention are as follows, and with reference to 5~Fig. 8 of figure, it includes step：
A, IP data send main frame and send ARP request to COFDM bridges transmitting terminal；
Judge that IP data send the IP address in the ARP request of main frame and the IP address of COFDM bridges transmitting terminal itself and are
It is no to match, such as match into step b, then return to step a.
B, after COFDM bridges transmitting terminal receives the ARP request that IP data send main frame, own MAC address will be included
ARP, which is replied message, sends back IP data transmission main frame；
C, IP data send main frame and send IP data to COFDM bridges transmitting terminal；
Judge COFDM bridge transmitting terminals IP data and IP data send main frame send IP data it is whether corresponding, such as
It is corresponding to enter step d, then return to step c.
D, COFDM bridges transmitting terminal receive corresponding to after IP data, extract data, group again again after IP data are split
The packet of every byte of frame 188 is dressed up, carries out COFDM modulation and transmitting；
E, COFDM bridges receiving terminal sends the ARP request with IP data receiver host ip values to IP data receivers main frame,
After COFDM bridge receiving terminals receive response, the MAC Address of IP data receiver main frames is recorded；
F, the packet that demodulation obtains is reassembled into the IP for including IP data receiver main frames by ICOFDM bridges receiving terminal
Address and the IP packets of MAC Address, are sent to IP data receiver main frames.
In summary, the present invention realizes the video and audio and data transfer of network interface by way of one-way transmission, carries
Transparent unilateral network transmission link is supplied, can provide network interface without using the higher bidirectional transmission devices of price connects
Enter, greatly save cost, brought convenience to user, improve Consumer's Experience.Present invention can apply to rescue and relief work, scouting, boat
The transmission of video, voice-and-data is carried out in the application such as bat, live by network interface.
These are only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made within principle etc., should be included in the scope of the protection.
Claims (8)
- A kind of 1. unidirectional bridges of COFDM, it is characterised in that：Main frame, COFDM bridges transmitting terminal, COFDM bridges are sent by IP data Receiving terminal and IP data receiver main frames are formed；The IP data send the transmitting terminal of main frame and the letter of COFDM bridge transmitting terminals Number input port is connected, and the COFDM bridges transmitting terminal sends the IP address in the ARP request of main frame according to the IP data Match with the IP address of COFDM bridges transmitting terminal itself；The signal output port and COFDM of the COFDM bridges transmitting terminal The signal input port of bridge receiving terminal is connected；The receiving terminal connection COFDM bridge receiving terminals of the IP data receivers main frame； The IP data send main frame by the COFDM bridges transmitting terminal and COFDM bridges receiving terminal to the IP data receivers master Machine one-way transmission IP data.
- A kind of 2. unidirectional bridges of COFDM according to claim 1, it is characterised in that：The COFDM bridges transmitting terminal includes First IP processors, the first network interface and COFDM modulators being connected respectively with the first IP processors；The first IP processing Device accesses the IP data by the first network interface and sends main frame；The first IP processors receive the IP data hair Send the IP data that main frame is sent and by being transmitted into COFDM bridge receiving terminals after the COFDM modulators modulates.
- A kind of 3. unidirectional bridges of COFDM according to claim 2, it is characterised in that：The COFDM bridges transmitting terminal is through D/ A converters and upconverter send radiofrequency signal to the COFDM bridges receiving terminal.
- A kind of 4. unidirectional bridges of COFDM according to claim 2, it is characterised in that：The COFDM bridges transmitting terminal uses Fpga chip, the fpga chip include IP agreement processing, code stream synchronization, rate adaptation, energy dissipation, RS encode, it is outer intertexture, Convolutional encoding, interior intertexture, constellation mapping, frame adaptation, COFDM modulation, protection interval insertion.
- A kind of 5. unidirectional bridges of COFDM according to claim 1, it is characterised in that：The COFDM bridges receiving terminal includes 2nd IP processors, the COFDM demodulators and the second network interface being connected respectively with the 2nd IP processors；The COFDM demodulation Device is demodulated to the IP data received；The packet that demodulation obtains is passed through the second network interface by the 2nd IP processors Send to IP data receiver main frames.
- A kind of 6. unidirectional bridges of COFDM according to claim 5, it is characterised in that：The COFDM demodulators are downconverted Device input radio frequency signal.
- 7. the IP data transferring methods of the unidirectional bridges of a kind of COFDM according to claim 1, it is characterised in that including step Suddenly：A, IP data send main frame and send ARP request to COFDM bridges transmitting terminal；B, after COFDM bridges transmitting terminal receives the ARP request that IP data send main frame, the ARP comprising own MAC address is returned Multiple message sends back IP data and sends main frame；C, IP data send main frame and send IP data to COFDM bridges transmitting terminal；D, after COFDM bridges transmitting terminal receives IP data, the number of every byte of frame 188 is reassembled into after IP data are split again According to bag, COFDM modulation and transmitting are carried out；E, COFDM bridges receiving terminal sends the ARP request with IP data receiver host ip values to IP data receivers main frame；F, after IP data receivers main frame receives the ARP request of COFDM bridge receiving terminals, COFDM bridges receiving terminal will demodulate To packet be reassembled into the IP packets of the IP address comprising IP data receiver main frames and MAC Address, be sent to IP numbers According to Receiving Host.
- A kind of 8. IP data transferring methods of the unidirectional bridges of COFDM according to claim 7, it is characterised in that：In step e In, after COFDM bridge receiving terminals receive response, record the MAC Address of IP data receiver main frames.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710496635.9A CN107395482A (en) | 2017-06-26 | 2017-06-26 | A kind of unidirectional bridge of COFDM and its IP data transferring methods |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710496635.9A CN107395482A (en) | 2017-06-26 | 2017-06-26 | A kind of unidirectional bridge of COFDM and its IP data transferring methods |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1613023A2 (en) * | 2004-07-01 | 2006-01-04 | Fujitsu Limited | Network system, network bridge device, network management apparatus, network address assignment method and network address resolution method |
| CN101202742A (en) * | 2006-12-13 | 2008-06-18 | 中兴通讯股份有限公司 | Method and system for preventing refusal service attack |
| CN101262406A (en) * | 2008-04-10 | 2008-09-10 | 艾默生网络能源有限公司 | Two-way loop network system and its control method |
| CN101383813A (en) * | 2007-09-03 | 2009-03-11 | 深圳市维信联合科技有限公司 | Method and system for network uni-directional forwarding |
| CN102134991A (en) * | 2010-01-27 | 2011-07-27 | 罗仁泽 | High-speed wireless duplex communication method and device for information between mud drilling well and ground |
-
2017
- 2017-06-26 CN CN201710496635.9A patent/CN107395482A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1613023A2 (en) * | 2004-07-01 | 2006-01-04 | Fujitsu Limited | Network system, network bridge device, network management apparatus, network address assignment method and network address resolution method |
| CN101202742A (en) * | 2006-12-13 | 2008-06-18 | 中兴通讯股份有限公司 | Method and system for preventing refusal service attack |
| CN101383813A (en) * | 2007-09-03 | 2009-03-11 | 深圳市维信联合科技有限公司 | Method and system for network uni-directional forwarding |
| CN101262406A (en) * | 2008-04-10 | 2008-09-10 | 艾默生网络能源有限公司 | Two-way loop network system and its control method |
| CN102134991A (en) * | 2010-01-27 | 2011-07-27 | 罗仁泽 | High-speed wireless duplex communication method and device for information between mud drilling well and ground |
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| CB03 | Change of inventor or designer information |
Inventor after: Gong Jianjun Inventor after: Huang Bin Inventor before: Gong Jianjun Inventor before: Deng Wei Inventor before: Zhang Tao |
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| CB02 | Change of applicant information |
Address after: 518000 office building 401, SKYWORTH digital building, Baoan District, Shiyan Road, Baoan District, Shenzhen. Applicant after: Prosperous and Science and Technology Ltd. is created in Shenzhen Address before: 518000 Baisha science and Technology Park, No. 3011, North Shahe Road, Nanshan District science and Technology Park, Shenzhen, Guangdong 8Q Applicant before: Prosperous and Science and Technology Ltd. is created in Shenzhen |
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Application publication date: 20171124 |
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