CN201114054Y - Satellite network sharing outbound link accomplishing device - Google Patents
Satellite network sharing outbound link accomplishing device Download PDFInfo
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- CN201114054Y CN201114054Y CNU2007200433874U CN200720043387U CN201114054Y CN 201114054 Y CN201114054 Y CN 201114054Y CN U2007200433874 U CNU2007200433874 U CN U2007200433874U CN 200720043387 U CN200720043387 U CN 200720043387U CN 201114054 Y CN201114054 Y CN 201114054Y
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Abstract
The utility model provides a device for realizing the satellite network sharing outbound link, which is a DVB (Digital Video Broadcasting) stellar satellite network and SCPC/DAMA (Single Channel Per Carrier/ Demand Assignment Multiple Access) satellite meshed network sharing outbound link. The device comprises an earth primary station unit (1), a communication satellite (7) and a satellite earth small station unit (8), wherein, a wireless signal emitted by the earth primary station unit (1) is received by the communication satellite (7) and is transmitted to the satellite earth small station unit (8); the earth primary station unit (1) comprises a network management server (2) of the meshed system, a DVB stellar network forward unit (3) and a primary station outdoor unit (6); the satellite earth small station unit (8) comprises a small station outdoor unit (9), a switch (10), a DVB receive-only machine (11) and a meshed network satellite terminal (12); the utility model makes the most of the advantages of the stellar network and the meshed network and complements the strengths of the two. The device for realizing the satellite network sharing outbound link saves the primary station ODU units and the satellite channel resources, realizes the low cost, does not need to change the prior device and has low construction cost.
Description
Technical field
The utility model 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 purpose of this utility model is to remedy the deficiencies in the prior art, and 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 utility model 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 utility model 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: the beneficial effects of the utility model comprise 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 utility model.
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.
The utility model practical application hardware environment 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, earth small station (8) by communication satellite (7); Described earth main station unit (1) comprising: the NM server of network (2), DVB star network forward direction unit (3), main website outdoor unit (6); NM server (2) links to each other with DVB star network forward direction unit (3) with common netting twine, and DVB star network forward direction unit (3) links to each other with main website outdoor unit (6) by coaxial cable; Wherein DVB star network forward direction unit (3) comprise IP packaging machine (4) and DVB modulator (5); IP packaging machine (4) links to each other with DVB 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 DVB, mesh network ICBM SHF satellite terminal (12); Use coaxial cable to connect between the single receipts machines of small station outdoor unit (9) and DVB (11), use common netting twine to link to each other between single receipts machines (11) of DVB 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 |
|---|---|---|---|
| CNU2007200433874U CN201114054Y (en) | 2007-10-30 | 2007-10-30 | Satellite network sharing outbound link accomplishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200433874U CN201114054Y (en) | 2007-10-30 | 2007-10-30 | Satellite network sharing outbound link accomplishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201114054Y true CN201114054Y (en) | 2008-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2007200433874U Expired - Fee Related CN201114054Y (en) | 2007-10-30 | 2007-10-30 | Satellite network sharing outbound link accomplishing device |
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| CN (1) | CN201114054Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145823B (en) * | 2007-10-30 | 2011-06-01 | 南京中网通信有限公司 | Implementation device for shared outbound link of satellite network |
-
2007
- 2007-10-30 CN CNU2007200433874U patent/CN201114054Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145823B (en) * | 2007-10-30 | 2011-06-01 | 南京中网通信有限公司 | Implementation device for shared outbound link of satellite network |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080910 Termination date: 20111030 |