CN101136684A - Network distribution device based on satellite transmission and ground notification compensating packet - Google Patents
Network distribution device based on satellite transmission and ground notification compensating packet Download PDFInfo
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- CN101136684A CN101136684A CNA2007101326889A CN200710132688A CN101136684A CN 101136684 A CN101136684 A CN 101136684A CN A2007101326889 A CNA2007101326889 A CN A2007101326889A CN 200710132688 A CN200710132688 A CN 200710132688A CN 101136684 A CN101136684 A CN 101136684A
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Abstract
This invention relates to a network distribution device for meeting packets based on satellite transmission and terrestrial notice including a master station unit, a terrestrial return unit and a satellite receiving unit, in which, the master station unit is connected with the terrestrial return unit by terrestrial networks, the satellite receiving unit is connected with the terrestrial return unit by network wires and receives satellite signals sent from the master station advantaged that down transmitting speed is fast reaching to several dozens of MBPS and the cost is low.
Description
Technical field
The invention provides a kind of file distributing device, specifically is a kind of file distributing network equipment based on satellite communication transmission and ground notification compensating bag, the invention belongs to the wireless network communication technique field.
Background technology
Because the many regional ground communication bandwidth resources of present stage China are not enough, need send to each area, the whole nation for large-capacity data and not have good solution, and while the Internet operators are in order to prevent network broadcasting windstorm, implement restricted online broadcast business, obviously existing terrestrial interconnection net can not be supported well, channel then can address the above problem just via satellite: distant-end node can be set up with the center and directly be connected, and large-capacity data directly transmission puts in place.The characteristics that have distance and covering face width based on satellite communication, it is vast in territory to be fit to very much China, underdeveloped remote districts of ground communication particularly, These characteristics has remedied the cost problem of using the long-distance broadband connections in ground on a large scale at a distance simultaneously, makes also can transmit all data simultaneously based on the satellite broadcasting of IP (Internet protocol).
Existing big capacity documents transmission technology is divided into two kinds: a kind of being to use undertaken by the terrestrial interconnection net, usually need set up a director server, carry out the transmission of the one-level one-level of file then by multistage server, lose time, costly, also occur easily because the transmission difficulty that network blockage causes.Another kind of mode is to use unidirectional satellite modem to carry out satellite and receives, as through the PCVSAT of sky communication common carrier model.Distant-end node can only be accepted the satellite-signal from the center, can not realize passback, though use cost is low; but, if desired packet loss repairing is finished because the one-way of satellite packet loss occurs through regular meeting; All Files need be retransmitted once, with time-consuming, effort, waste bandwidth.So present stage is badly in need of a kind of low-cost utility unit that high-speed downloads also can be provided and can mend bag fast that possesses.
Summary of the invention
Technical problem: the objective of the invention is to overcome deficiency of the prior art, a kind of network distribution device based on satellite transmits and ground notification compensating bag is provided, have with low cost, broad covered area, downlink transfer speed is fast, advantage is fast repaid in the high communication quality.
Technical scheme: the present invention is by asymmetric information transmission carrying out two-way communication, and the employing downlink channel direct construction network mode reaches the purpose of high speed data transfer.So-called asymmetric information transmission is meant up-downgoing transmission rate difference, be meant that specifically the one-way VSAT downlink transmission data adopts the electromagnetic wave mode, be characterized in that speed can reach tens MBPSs, and adopt the netting twine ways of connecting from the one-way VSAT uplink transmission data, its transmission rate is less and be subjected to be subjected to easily the restriction of ground network connection speed, has only several MBPSs at most; So-called direct construction network mode be meant the electromagnetic wave that gets off from satellite via satellite receiving element convert to can be in the general data of transmission over networks.Data flow among the present invention, it is the IP packet, (full name is that Digital Video Broadcasting-Satellite is the digital broadcasting satellite system standard to be converted to DVB-S via the main website end, the standard of China Broadcast ﹠ Television trade information transmission) data, after modulating, be sent to satellite, by the satellite receiving element electromagnetic wave denoising that receives amplified then and be reduced into the initial IP packet with the electromagnetic wave form.
Network distribution device based on satellite transmits and ground notification compensating bag of the present invention comprises main station unit, passback unit, ground, satellite receiving element; Wherein main station unit is connected with passback unit, ground by the ground network connection, and the satellite receiving element is connected by netting twine and passback unit, ground, and the satellite receiving element receives the satellite-signal that sends out from main station unit simultaneously; Described main station unit comprises: mend packet receiver, communications satellite and satellite transmission center, communications satellite receives the Radio Satellite signal that sends from the satellite transmission center, and this Radio Satellite signal is sent to the satellite receiving element; The satellite transmission center is connected by common netting twine with the benefit packet receiver; Passback unit, described ground comprises: second standard computer terminal that ground network connects and comprises benefit bag calculation procedure and network adapter, and second standard computer terminal connects ground network by netting twine and connects; Described satellite receiving element comprises: exterior aerial and feed thereof and frequency converter and first standard computer terminal that has installed satellite receiving card in the standard chamber additional, this three connects successively by the wire signal feeder line.
The concrete process of carrying out:
Main station unit adopts file the mode of satellite broadcasting to send to each satellite receiving element, adds certain packets of information in broadcasting in content, and this content is encapsulated again, during with next choice bag which packet loss is added up.
If this moment, error code appearred in satellite network, completion rate will be 99.9x%, to have this moment the data of tens to hundreds of K bytes to fail to receive, and need propose to mend the bag application and inform the information of mending bag to mending packet receiver, these information be included in the file that received just now.Mend packet receiver information is sent to the satellite transmission center, go out, allow the satellite receiving element receive once more, unreceived bag polishing by the packet broadcast that the satellite transmission center will be lost.Receiving terminal is removed those automatically and is mended package informatin, and the file of such complete and accurate just can have been received.Mend benefit package informatin that packet receiver receives seldom, the terrestrial network network bandwidth that need take is also considerably less.
Beneficial effect: beneficial effect of the present invention comprises that satellite downlink transfer speed is fast: can reach tens MBPSs; With low cost: employed hardware all is standard hardware under the existing environment, need not reequip; Broad covered area: the zone that satellite and netting twine can cover can be suitable for the inventive method; Can save a large amount of terrestrial network bandwidth, and for the problem of packet loss in the satellite network transmission also by good solution; Downlink channel direct construction network mode, it is more convenient to use, and efficient is higher.
Description of drawings
Fig. 1 is a structure drawing of device of the present invention.
Wherein: main station unit 1, communications satellite 2, satellite transmission center 3, benefit packet receiver 4, satellite receiving element 5, exterior aerial 6, feed and frequency converter 7, indoor satellite receiving card 8, first standard computer terminal 9, passback unit 10, ground, benefit bag calculation procedure 11, ground network connection 12, network adapter 13, second standard computer terminal 14.
Embodiment
This specific embodiment combination technology scheme and accompanying drawing describe in further detail practical application of the present invention.
As shown in drawings: the present invention includes main station unit 1, passback unit 10, ground, satellite receiving element 5; Wherein main station unit 1 is connected with passback unit 10, ground by the transmission of ground virtual dial-up, and satellite receiving element 5 is connected with passback unit 10, ground by netting twine, and satellite receiving element 5 receives the satellite-signal that sends out from main station unit simultaneously;
Wherein main station unit 1 comprises: mend packet receiver 4, communications satellite 2 and satellite transmission center 3; Communications satellite 2 receives the Radio Satellite signal that sends from satellite transmission center 3, and this Radio Satellite signal is sent to passback unit 10, ground; Satellite transmission center 3 is connected by common netting twine with benefit packet receiver 4;
Wherein passback unit 10 in ground comprises: network adapter 13 netting twines that ground network connection 12 and one cover is mended in second standard computer terminal, 14, the second standard computer terminals 14 that wrap calculation procedure 11 and network adapter 13 connect ground network connection 12;
Wherein satellite receiving element 5 comprises: exterior aerial 6 and feed thereof and frequency converter 7 and first standard computer terminal 9 that has installed satellite receiving card 8 in the standard chamber additional, this three connects successively by the wire signal feeder line.
Practical application hardware environment of the present invention is as follows:
Main station unit 1 is specially: the A9780 main station unit of Alcatel company, and the electromagnetic wave of employing Ku wave band between this unit and the satellite, the agreement of abideing by DVB-S communicates;
Communications satellite 2: No. four satellites in Asia;
The DVB-S system of satellite transmission center 3:Thales company;
Mend 4: one station servers of packet receiver, processor is Xeon 2.6,2G internal memory, hard disk 80G;
Exterior aerial 6 and feed thereof and frequency converter 7: 1.8 meters antennas of Chengdu nova and centre halfback's 11300 feed frequency converters thereof;
The SkyStar satellite receiving card of satellite receiving card 8:Technisat company in the standard chamber;
First standard computer terminal 9: central processing unit is Celeron 1.7Ghz, in save as 256MB, hard disk is 40GB;
Mend bag calculation procedure 11: the Active ADBS system of the moving company of Beijing net;
Ground network connects 12: common broadband connection; The RTL8139 equipment of network adapter 13:Realtek company;
Second standard computer terminal 14: central processing unit is Celeron 1.7Ghz, in save as 256MB, hard disk is 40GB;
The present invention is concrete effect (calculating to give 1000 some Transmit messages) compared with prior art
| Receiving velocity | The number of servers that takies | Finish the time that transmission needs | Cost | |
| Use terrestrial network | 2-10M | Tens | Very long | Expensive |
| Only use the unidirectional reception of satellite | 40M | Several | Generally | Cheaply |
| Use this patent mode | 40M | Several | Short | Cheaply |
Claims (1)
1. the network distribution device based on satellite transmits and ground notification compensating bag is characterized in that comprising main station unit (1), passback unit (10), ground, satellite receiving element (5); Wherein main station unit (1) is connected with passback unit, ground (10) by the ground network connection, and satellite receiving element (5) is connected by netting twine and passback unit, ground (10), and satellite receiving element (5) receives the satellite-signal that sends out from main station unit simultaneously; Described main station unit (1) comprising: mend packet receiver (4), communications satellite (2) and satellite transmission center (3), communications satellite (2) receives the Radio Satellite signal that sends from satellite transmission center (3), and this Radio Satellite signal is sent to satellite receiving element (5); Satellite transmission center (3) is connected by common netting twine with benefit packet receiver (4); Described passback unit, ground (10) comprising: ground network connects (12) and second standard computer terminal (14) that comprises benefit bag calculation procedure (11) and network adapter (13), and second standard computer terminal (14) connects ground network by netting twine and connects (12); Described satellite receiving element (5) comprising: exterior aerial (6) and feed thereof and frequency converter (7) He Yitai have installed first standard computer terminal (9) of satellite receiving card (8) in the standard chamber additional, and this three connects successively by the wire signal feeder line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101326889A CN101136684A (en) | 2007-09-18 | 2007-09-18 | Network distribution device based on satellite transmission and ground notification compensating packet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101326889A CN101136684A (en) | 2007-09-18 | 2007-09-18 | Network distribution device based on satellite transmission and ground notification compensating packet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101136684A true CN101136684A (en) | 2008-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101326889A Pending CN101136684A (en) | 2007-09-18 | 2007-09-18 | Network distribution device based on satellite transmission and ground notification compensating packet |
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| Country | Link |
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| CN (1) | CN101136684A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104540041A (en) * | 2015-01-21 | 2015-04-22 | 冯山泉 | Method and system for distributing KTV (Karaoke television) data through satellite and ground communication |
| CN105846953A (en) * | 2016-03-15 | 2016-08-10 | 雷欧尼斯（北京）信息技术有限公司 | Digital cinema data packet transmission method and device |
-
2007
- 2007-09-18 CN CNA2007101326889A patent/CN101136684A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104540041A (en) * | 2015-01-21 | 2015-04-22 | 冯山泉 | Method and system for distributing KTV (Karaoke television) data through satellite and ground communication |
| CN105846953A (en) * | 2016-03-15 | 2016-08-10 | 雷欧尼斯（北京）信息技术有限公司 | Digital cinema data packet transmission method and device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080305 |