CN101145823B - Implementation device for shared outbound link of satellite network - Google Patents
Implementation device for shared outbound link of satellite network Download PDFInfo
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- CN101145823B CN101145823B CN2007101344887A CN200710134488A CN101145823B CN 101145823 B CN101145823 B CN 101145823B CN 2007101344887 A CN2007101344887 A CN 2007101344887A CN 200710134488 A CN200710134488 A CN 200710134488A CN 101145823 B CN101145823 B CN 101145823B
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Abstract
The realization device of a satellite network shared outbound link is of a DVB (digital video broadcast) star satellite network and a SCPC/DAMA (single channel per carrier / demand assignment multiple access) satellite mesh network shared outbound link. The device comprises an earth master station unit (1), a communication satellite (7), and a satellite earth small station unit (8). The wireless signal transmitted by the earth master station unit (1) is received by the communication satellite (7) and then is retransmitted to the earth small station unit (8). The earth master station unit (1) comprises a mesh system network management server (2), a DVB star network forward unit (3), and a master station outdoor unit (6). The satellite earth small station unit (8) comprises a small station outdoor unit (9), a switch (10), a DVB one-way receiver (11), and a mesh network satellite terminal (12). The invention fully utilizes the advantages of both the star network and the mesh network, and adopts the method of the complementary advantage. The invention has the advantages of saving the ODU unit of the master station, saving satellite channel resource, realizing in lower cost, being free from replacing the prior equipment and constructing in lower cost.
Description
Technical field
The present invention is that starlike satellite network of a kind of DVB (digital video broadcasting) and SCPC/DAMA (single channel per carrier/demand assignment multiple access inserts) satellite mesh network are shared the implementation method of outbound link, the invention belongs to the wireless network communication technique field.
Background technology
Existing satellite network system is divided into the system of star-network system, mesh network system and point-to-point communication.
Wherein the star-network system has big, the power amplifier power height of antenna area of main website, go out to link bandwidth big, the advantage that exit message speed is high; But in the star-network because the speed ratio that the restriction of the configuration of terminal equipment and ODU equipment is generally uploaded is lower.
And in the mesh network systems of SCPC/DAMA, the more intense advantage of ability with uploading rate of terminal, and the effect of main website only with the information that sends network management, but but therefore to set up a satellite earth main website, need a big antenna and power amplifier, the channel of defending that need rent a network management separately is the information of transmission network management specially.
So need a kind of can in conjunction with both advantages method, promptly bring into play the star-network main website and go out, the high-power advantage of antenna area power amplifier, and additional mesh network terminal can return the speed height, and starlike and advantage mesh network are complemented each other to the link bandwidth band.
Summary of the invention
Technical problem: the objective of the invention is to remedy the deficiencies in the prior art, a kind of star network and mesh network shortcoming separately of making full use of is provided, the implement device of the shared outbound link of satellite network that fills of making it to have complementary advantages.Have the main website of saving ODU unit, save satellite channel resource, realize that cost is low, do not need to change existing equipment, the advantage that construction cost is low.
Technical scheme: the implement device of shared outbound link of satellite network of the present invention is characterized in that this device comprises earth main station unit, communication satellite, unit, satellite earth small station; The wireless signal of earth main station unit emission is received and is forwarded to unit, earth small station by communication satellite; Described earth main station unit comprises: the NM server of network, DVB star network forward direction unit, main website outdoor unit; NM server links to each other with DVB star network forward direction unit with common netting twine, and DVB star network forward direction unit links to each other with the main website outdoor unit by coaxial cable; Wherein DVB star network forward direction unit comprises IP packaging machine and DVB modulator; The IP packaging machine links to each other with the DVB modulator with common netting twine; Unit, satellite earth small station comprises small station outdoor unit, switch, the single receipts machine of DVB, mesh network ICBM SHF satellite terminal; Use coaxial cable to connect between the single receipts machine of small station outdoor unit and DVB, use common netting twine to link to each other between single receipts machine of DVB and the switch, use netting twine to link to each other between mesh network ICBM SHF satellite terminal and the switch.
This device utilizes going out to link of star-network, and the network management information of SCPC/DAMA mesh network is sent down by multicast mode; And receiving terminal adopts single receipts machine of the demodulation of a DVB-S, a switch, the ICBM SHF satellite terminal of a mesh network (comprising the function that modulation and knot are transferred), single receipts machine is connected the same network segment by the ICBM SHF satellite terminal of switch and mesh network, single receipts machine of DVB-S the signal of DVB is received and muticast data transmission that will be wherein to switch, automatically discern and accept this information by the ICBM SHF satellite terminal of mesh network again, thereby this information can be carried out the various configuration parameters of network of network management adjustment ICBM SHF satellite terminal and the function that network state realizes network management.Network management information only takies the IP data rate of tens K, with respect to star network go out to tens M data rates for almost can ignore.Go out to link be only amplify through signal by the modulators modulate of main website and then from power amplifier from the data of main website emission and frequency shift after the back be converted into radiofrequency signal and send to satellite repeater from baseband signal, through sending to the path of ICBM SHF satellite terminal after the transponder processing.The SCPC/DAMA mesh network is meant the mesh network mode of single carrier Random Access Channel.The DVB-S star-network is to point out to adopt the standard modulation of DVB-S and the star-network of channel coding method to link.
The present invention comprises that specifically the main website forward direction unit of DVB-S star network comprises ODU unit and forward link unit, and the network management unit of SCPC/DAMA, receiving element comprise single receipts machine of DVB-S, switch, the ICBM SHF satellite terminal of SCPC/DAMA mesh network.
Beneficial effect: beneficial effect of the present invention comprises saving builds SCPC/DAMA network primary station forward direction unit (modulation of envelope shape and the ODU unit that comprise forward direction, save the forward direction satellite bandwidth, because if use the forward link of SCPC/DAMA separately, need to use separately a satellite carrier, and the information of having only tens K in fact that it need use, for the satellite channel cost of use of costliness, can save a very big cost like this.
Description of drawings
Fig. 1 is a structure drawing of device of the present invention.
Wherein have: the NM server 2 of satellite main station unit 1, network, DVB star network forward direction unit 3, IP packaging machine 4, DVB modulator 5, main website outdoor unit 6, communication satellite unit 7, unit, satellite earth small station 8, small station outdoor unit 9, switch 10, the single receipts machine 11 of DVB, mesh network satellite bidirectional terminal 12.
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 satellite earth main station unit 1, communication satellite unit 7, unit, satellite earth small station 8; Wherein satellite earth main station unit 1 sends to communication satellite unit 7 with the network management information of the mesh network forward direction unit 3 by the DVB star-network with microwave mode, communication satellite 7 is sending to unit, satellite earth small station 8 after signal is amplified with microwave mode, small station outdoor unit 9 is delivered to the single receipts machine 11 of DVB after receiving the microwave signal frequency reducing of microwave signal with high frequency, the single receipts machine 11 of DVB is demodulated to carrier (boc) modulated signals the base band letter and all information is passed to switch 10, thereby the network management information of the two-way satellite terminal of mesh network 12 automatic reception mesh networks is realized the function of network management.
Wherein satellite earth main website 1 comprises network NM server 2, DVB star network forward direction unit 3, IP packaging machine 4, DVB modulator 5, main website outdoor unit 6, network NM server 2 passes to network management information the IP packaging machine 4 of DVB star network forward direction unit 3 by netting twine, the IP data are packaged into the MPEG-2 data in IP packaging machine 4, by DVB modulator 5 baseband signal is modulated into the DVB-S signal of carrier modulation again, the signal of DVB-S is dealt into communication satellite through after the up-conversion with wireless mode from the main website outdoor unit.
Communication satellite Unit 7 comprise communication satellite, receive wireless radiofrequency signal signal strength signal intensity is amplified forwarding afterwards, are equivalent to a transparent TU Trunk Unit.
Unit, satellite earth small station 8 comprises small station outdoor unit 9, switch 10, the single receipts machine 11 of DVB, mesh network satellite bidirectional terminal 12, after receiving the satellite radio signal, the small station outdoor unit is sent to the single receipts machine 11 of DVB by coaxial cable, be transferred on the switch 10 by netting twine after the single receipts machine of DVB is demodulated to baseband signal to carrier (boc) modulated signals, the satellite bidirectional terminal 12 of mesh network links to each other with switch by netting twine and the function of automatic reception network management information realization network management.
Practical application hardware environment of the present invention is as follows:
Satellite earth main station unit 1 is specially: the A9780 main station unit of Alcatel company, adopt the electromagnetic wave of Ku wave band between this unit and the satellite, and the agreement of abideing by DVB-S communicates the Vipersat main station unit with Comtech company.
Netted is that NM server 2 is specially: the network management server of the Vipersat system of Comtech company.
IP packaging machine unit 4 is specially: the IPE of Thales company.
DVB modulator 5 is specially: the NTC2215 of Newtech.
Main website outdoor unit 6 is specially: 5.6 meters antennas of Advantech company, the 200W power amplifier of XICOM company, the LNB of Norsat company.
Communication satellite 7 is specially: No. four satellites in Asia;
Small station outdoor unit 9 is specially 1.8 meters antennas of Chengdu nova and the 11300LNB of Norsat company thereof
Switch 10 is specially: 8 oral sexes of D-LINK company are changed planes.
The single receipts machine 11 of DVB is specially: single receipts machine of common DVB-S.
The satellite bidirectional terminal 12 of mesh network is specially: Comtech570L satellite communication machine.
The network management information of network management unit is earth main station unit 1 via satellite, sends to the forward direction unit of DVB-S with multicast mode, and this multicast address is to set operable in the forward direction unit.The forward direction unit receives and will work the signal that is encapsulated as DVB-S behind the multicast information and send on the satellite.The processing and the optimization of the satellite communication equipment by main website re-send on the communication satellite 7, broadcast to the earth after the power amplification via satellite then again.All be transferred to all IP information on the switch behind the DVB-S receiver demodulation DVB-S signal in the unit, satellite earth small station, automatically discern by the multicast address that pre-sets by the ICBM SHF satellite terminal of SCPC/DAMA then, all all are regarded as the information of network management from the information that this multicast address sends, thereby the network management information of having realized SCPC/DAMA is by the star-network forward direction unit transmission of DVB-S and the function of carrying out network management.
Claims (1)
1. the implement device of a shared outbound link of satellite network is characterized in that this device comprises earth main station unit (1), communication satellite (7), unit, satellite earth small station (8); The wireless signal of earth main station unit (1) emission is received and is forwarded to unit, satellite earth small station (8) by communication satellite (7); Described earth main station unit (1) comprising: the NM server of network (2), digital video broadcasting star network forward direction unit (3), main website outdoor unit (6); NM server (2) links to each other with digital video broadcasting star network forward direction unit (3) with common netting twine, and digital video broadcasting star network forward direction unit (3) links to each other with main website outdoor unit (6) by coaxial cable; Wherein digital video broadcasting star network forward direction unit (3) comprise IP packaging machine (4) and digital video broadcasting modulator (5); IP packaging machine (4) links to each other with digital video broadcasting modulator (5) with common netting twine; Unit, satellite earth small station (8) comprises small station outdoor unit (9), switch (10), the single receipts machines (11) of digital video broadcasting, mesh network ICBM SHF satellite terminal (12); Use coaxial cable to connect between the single receipts machines of small station outdoor unit (9) and digital video broadcasting (11), use common netting twine to link to each other between single receipts machines (11) of digital video broadcasting and the switch (10), use netting twine to link to each other between mesh network ICBM SHF satellite terminal (12) and the switch (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101344887A CN101145823B (en) | 2007-10-30 | 2007-10-30 | Implementation device for shared outbound link of satellite network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101344887A CN101145823B (en) | 2007-10-30 | 2007-10-30 | Implementation device for shared outbound link of satellite network |
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| Publication Number | Publication Date |
|---|---|
| CN101145823A CN101145823A (en) | 2008-03-19 |
| CN101145823B true CN101145823B (en) | 2011-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101344887A Expired - Fee Related CN101145823B (en) | 2007-10-30 | 2007-10-30 | Implementation device for shared outbound link of satellite network |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916738B (en) * | 2012-11-01 | 2015-02-11 | 中国电子科技集团公司第五十四研究所 | Data reliable multicast method based on FDMA (frequency division multiple Access)/DAMA (demand assigned multiple access) satellite communication system |
| US9636668B2 (en) | 2012-11-13 | 2017-05-02 | Basf Se | Production and use of a zeolitic material in a process for the conversion of oxygenates to olefins |
| CN109660772B (en) * | 2018-12-10 | 2020-09-18 | 航天恒星科技有限公司 | Comprehensive management system for realizing satellite transmission of broadcast television |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1675855A (en) * | 2002-06-25 | 2005-09-28 | 高通股份有限公司 | Reducing service outages in a multibeam satellite system |
| CN1902841A (en) * | 2003-12-19 | 2007-01-24 | 高等技术学校 | Satellite modem with a dynamic bandwidth |
| CN201114054Y (en) * | 2007-10-30 | 2008-09-10 | 南京中网通信有限公司 | Satellite network sharing outbound link accomplishing device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1675855A (en) * | 2002-06-25 | 2005-09-28 | 高通股份有限公司 | Reducing service outages in a multibeam satellite system |
| CN1902841A (en) * | 2003-12-19 | 2007-01-24 | 高等技术学校 | Satellite modem with a dynamic bandwidth |
| CN201114054Y (en) * | 2007-10-30 | 2008-09-10 | 南京中网通信有限公司 | Satellite network sharing outbound link accomplishing device |
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| CN101145823A (en) | 2008-03-19 |
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Granted publication date: 20110601 Termination date: 20171030 |