CN104469880A - Satellite route judgment method and system - Google Patents
Satellite route judgment method and system Download PDFInfo
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- CN104469880A CN104469880A CN201410646068.7A CN201410646068A CN104469880A CN 104469880 A CN104469880 A CN 104469880A CN 201410646068 A CN201410646068 A CN 201410646068A CN 104469880 A CN104469880 A CN 104469880A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Computer Networks & Wireless Communication (AREA)
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- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention relates to the technical field of communication, in particular to a satellite route judgment method and system. The satellite route judgment method includes the steps that a signal intensity value of a micro earth station or small earth station VAST satellite is collected in real time; a router is controlled to be switched and connected to the VASAT satellite or a maritime satellite according to the signal intensity value of the VASAT satellite. Through the satellite route judgment method and system, route switching can be carried out by selecting the maritime satellite with high communication expenses or the VASAT satellite with a lower price, the expenses for maritime communication are reduced, and communication continuity is guaranteed.
Description
Technical field
The present invention relates to communication technical field, particularly about a kind of Satellite Road by decision method and system.
Background technology
Marisat system (system of maritime satellite communications) uses communication satellite as the marine radio communication system of relay station, be characterized in that quality is high, capacity is large, can global, round-the-clock, full-time communication.In 1976, the first backward Atlantic Ocean, Pacific and Indian oceans overhead transmitted three maritime communication satellites in the U.S., and establish first maritime satellite communications station in the world, main capacity services is in naval.In July, 1979, International Maritime Satellite Organization set up, and established International Maritime Satellite Communication system in nineteen eighty-two, became first generation International Maritime Satellite Communication system.
Marisat system is made up of communication satellite, bank station and ship station three parts.1. maritime communication satellite, it is the relay station of system, in order to the signal at sending and receiving bank station and ship station.Satellite is laid in the Pacific Ocean, the Atlantic Ocean and oceanic province, three, the Indian Ocean, and adopt satellite, satellite can provide phone, telegram, fax and shared call service.2. bank station, it is the maritime satellite communications earth station established by the sea, and play the control action of communication network, be provided with the equipment such as antenna, base station can be connected with other communication networks land.3. ship station, it is the maritime satellite communications earth station filled aboard ship, is the communication terminal of system, is equipped with the equipment such as parabolic antenna, and telephone communication adopts mode of frequency regulation, and telegraph communication adopts phase shift keying modulation mode.The distribution of the message capacity of every communication satellite is by specifying the network coordinating station of bank station to be responsible for distributing satellite communication channel.Telegraph channel is allocated in advance to each bank station, is responsible for distributing the time slot carrying out telegraph communication with ship station by it.Telephone channel is controlled by network coordinating station, is undertaken applying for rear distribution by ship station, bank station.
Marine satellite has become indispensable as the communications conduit of operation on the sea or ship, but due to the communications cost of marine satellite be all with flow rate calculation, one of expensive shortcoming also becoming marine satellite of its communications cost.
Summary of the invention
Costly in order to solve maritime satellite communications in prior art, but the problem that operation at sea must communicate again proposes a kind of Satellite Road by decision method and system, can automatically or the VSAT satellite of artificial selection expense relative moderate communicate.
Embodiments provide a kind of Satellite Road by decision method, comprise,
The signal strength values of the miniature earth station of Real-time Collection or small global station VSAT satellite;
Control router switching according to the signal strength values of described VSAT satellite and be connected to VSAT satellite or marine satellite.
A kind of Satellite Road according to the embodiment of the present invention is by a further aspect of decision method, switch and be connected to VSAT satellite or marine satellite comprises further controlling router according to the signal strength values of described VSAT satellite, when the signal strength values of described VSAT satellite exceedes threshold value, control the switching of described router and be connected to VSAT satellite; When the signal strength values of described VSAT satellite is lower than threshold value, controls the switching of described router and be connected to marine satellite.
A kind of Satellite Road according to the embodiment of the present invention is by another further aspect of decision method, switch and be connected to VSAT satellite or marine satellite comprises further controlling router according to the signal strength values of described VSAT satellite, according to the signal strength values conducting of described VSAT satellite or the data communication of shutoff and described router, described router is connected to marine satellite or VSAT satellite according to the conducting of described data communication or shutoff switching.
A kind of Satellite Road according to the embodiment of the present invention, by another further aspect of decision method, remains the power supply of the network port carrying out data communication with described router.
A kind of Satellite Road according to the embodiment of the present invention is by another further aspect of decision method, at described router according to the conducting of described data communication or turn off switching and be connected to marine satellite or VSAT satellite comprises further, described router, according to the conducting of described data communication or shutoff, selects corresponding routing table to connect corresponding satellite.
The embodiment of the present invention additionally provides a kind of Satellite Road by decision system, comprises, VSAT satellite modem, marine satellite modulator-demodulator, router, route judgement device;
Described route judgement device is connected with described router with described VSAT satellite modem respectively, described router is connected with VSAT satellite by described VSAT satellite modem, and described router is connected with marine satellite by described marine satellite modulator-demodulator;
Described route judgement device passes through the signal strength values of the miniature earth station of described VSAT satellite modem Real-time Collection or small global station satellite, and is connected to VSAT satellite or marine satellite according to the signal strength values control router switching of described VSAT satellite.
A kind of Satellite Road according to the embodiment of the present invention is by a further aspect of decision system, and described route judgement device, also for when the signal strength values of described VSAT satellite exceedes threshold value, controls the switching of described router and is connected to VSAT satellite; When the signal strength values of described VSAT satellite is lower than threshold value, controls the switching of described router and be connected to marine satellite.
A kind of Satellite Road according to the embodiment of the present invention is by another further aspect of decision system, controller connects the first network card chip and the second network card chip respectively, analog switch is connected between the first network card chip and router network interface, VSAT network interface is connected with described second network card chip, and described router network interface is connected with described router;
VSAT network interface receives the signal strength signal intensity that VSAT modulator-demodulator transmits, controller is sent to by the second network card chip, described controller according to described signal strength signal intensity compared with decision threshold, the conducting of analog switch or the state of shutoff are set according to comparative result, described analog switch conducting or the data communication turned off between the first network card chip and described router.
A kind of Satellite Road according to the embodiment of the present invention is by another further aspect of decision system, it is characterized in that described route judgement device comprises further, switch, be connected between described analog switch and described router network interface, for remaining the power supply of the network port carrying out data communication with described router.
A kind of Satellite Road according to the embodiment of the present invention is by another further aspect of decision system, and described router, according to whether carrying out data communication with described route judgement device, selects corresponding routing table to connect corresponding satellite.
By the method and system of above-described embodiment, can select to carry out route handoff between the high marine satellite of communication cost price and the VSAT satellite of relative low price, achieve the expense reducing overocean communications, and ensure that the continuity of communication.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.In the accompanying drawings:
Figure 1 shows that the flow chart of a kind of Satellite Road of the embodiment of the present invention by decision method;
Figure 2 shows that the structure chart of a kind of Satellite Road of the embodiment of the present invention by decision system;
Figure 3 shows that the particular flow sheet of a kind of Satellite Road of the embodiment of the present invention by decision method;
Figure 4 shows that the system construction drawing of the embodiment of the present invention;
Figure 5 shows that the structural representation of embodiment of the present invention route judgement device inside.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the embodiment of the present invention is described in further details.At this, schematic description and description of the present invention is for explaining the present invention, but not as a limitation of the invention.
Be illustrated in figure 1 the flow chart of a kind of Satellite Road of the embodiment of the present invention by decision method.
Comprise step 101, the signal strength signal intensity (E of the miniature earth station of Real-time Collection or small global station (VSAT) satellite
b/ N
0) value.
Step 102, controls router switching according to the signal strength values of described VSAT satellite and is connected to VSAT satellite or marine satellite.
As one embodiment of the present of invention, switch and be connected to VSAT satellite or marine satellite comprises further controlling router according to the signal strength values of described VSAT satellite, when the signal strength values of described VSAT satellite exceedes threshold value, control the switching of described router and be connected to VSAT satellite; When the signal strength values of described VSAT satellite is lower than threshold value, controls the switching of described router and be connected to marine satellite.
As one embodiment of the present of invention, described threshold value is 4dB.Or can also be other signal strength values, at this as preferred embodiment, not limit the span of this signal strength values.
As one embodiment of the present of invention, switch and be connected to VSAT satellite or marine satellite comprises further controlling router according to the signal strength values of described VSAT satellite, according to the signal strength values conducting of described VSAT satellite or the data communication of shutoff and described router, described router is connected to marine satellite or VSAT satellite according to the conducting of described data communication or shutoff switching.
As one embodiment of the present of invention, remain the power supply of the network port carrying out data communication with described router.
As one embodiment of the present of invention, at described router according to the conducting of described data communication or turn off switching and be connected to marine satellite or VSAT satellite comprises further, described router, according to the conducting of described data communication or shutoff, selects corresponding routing table to connect corresponding satellite.
By the method for the invention described above embodiment, can select to carry out route handoff between the high marine satellite of communication cost price and the VSAT satellite of relative low price, achieve the expense reducing overocean communications, and ensure that the continuity of communication; By keeping the power supply to the network port always in the process of carrying out Route Selection, there will not be when ensure that and again enable this network port and start failed situation, ensure that the reliability of communication.
Be illustrated in figure 2 the structure chart of a kind of Satellite Road of the embodiment of the present invention by decision system.
Comprise VSAT satellite modem 201, marine satellite modulator-demodulator 202, router two 03, route judgement device 204.
Described route judgement device 204 is connected with described router two 03 with described VSAT satellite modem 201 respectively, described router two 03 is connected with VSAT satellite by described VSAT satellite modem 201, and described router two 03 is connected with marine satellite by described marine satellite modulator-demodulator 202;
Described route judgement device 204 is by the signal strength signal intensity (E of the miniature earth station of described VSAT satellite modem 201 Real-time Collection or small global station (VSAT) satellite
b/ N
0) value, and be connected to VSAT satellite or marine satellite according to signal strength values control router 203 switching of described VSAT satellite.
As one embodiment of the present of invention, described route judgement device 204, also for when the signal strength values of described VSAT satellite exceedes threshold value, controls the switching of described router two 03 and is connected to VSAT satellite; When the signal strength values of described VSAT satellite is lower than threshold value, controls the switching of described router two 03 and be connected to marine satellite.
As one embodiment of the present of invention, described route judgement device comprises further, controller connects the first network card chip and the second network card chip respectively, analog switch is connected between the first network card chip and router network interface, VSAT network interface is connected with described second network card chip, and described router network interface is connected with described router;
VSAT network interface receives the signal strength signal intensity that VSAT modulator-demodulator transmits, controller is sent to by the second network card chip, described controller according to described signal strength signal intensity compared with decision threshold, the conducting of analog switch or the state of shutoff are set according to comparative result, described analog switch conducting or the data communication turned off between the first network card chip and described router.
As one embodiment of the present of invention, described route judgement device comprises further, switch, is connected between described analog switch and described router network interface, for remaining the power supply of the network port carrying out data communication with described router.
As one embodiment of the present of invention, described router, according to whether carrying out data communication with described route judgement device, selects corresponding routing table to connect corresponding satellite.
By the system of the invention described above embodiment, can select to carry out route handoff between the high marine satellite of communication cost price and the VSAT satellite of relative low price, achieve the expense reducing overocean communications, and ensure that the continuity of communication; By keeping the power supply to the network port always in the process of carrying out Route Selection, there will not be when ensure that and again enable this network port and start failed situation, ensure that the reliability of communication.
Be illustrated in figure 3 the particular flow sheet of a kind of Satellite Road of the embodiment of the present invention by decision method.
Route judgement device can based on arm hardware platform and (SuSE) Linux OS, and major function extracts the signal strength signal intensity E of VSAT satellite modem
b/ N
0value.Can with reference to as shown in Figure 4 in the system construction drawing of the present embodiment, the IP address of wherein different device network port arrangement is as shown in FIG..
Step 301, the configuration file of configuration route judgement device, in this example can by the sample rate of SampleRate parameter configuration route judgement device 401, by the time delay between SamplePeriod parameter configuration route judgement device 401 double sampling, carry out SamplePeriod count delay Posterior circle carry out on once sample, by the threshold value of route judgement device 401 described in Threshold parameter configuration, for the threshold value of the signal strength signal intensity as VSAT satellite, such as, be 4dB.
Step 302, the VSAT modulator-demodulator 403 that described route judgement device 401 starts being connected with VSAT satellite 402 according to the parameter in above-mentioned configuration file carries out signal strength signal intensity collection, such as, obtained the signal strength signal intensity (E of the VSAT satellite-signal that VSAT modulator-demodulator 403 receives by the VSAT satellite adjustment demodulator of the Comtech company in snmp agreement
b/ N
0) value.
Step 303, after the signal strength values of the SampleRate collected a described VSAT satellite is lower than described threshold value (Threshold), enter step 304, otherwise return step 302 continuous collecting to judge, that is, VSAT satellite 402 is connected to by VSAT modulator-demodulator 403 in router four 04 initial condition in this example.
According to the practical operating experiences of satellite modem, the signal strength values of Received signal strength can not higher than 20.0dB, when obtaining effective Eb/N0 value and judging, if current E
b/ N
0when value is higher than decision threshold and lower than 20.0dB, then think that current VSAT system acknowledge(ment) signal is good, using VSAT link as Primary communication link; If current E
b/ N
0when value is lower than decision threshold, thinks that current VSAT system communication quality is not high, preferentially select marisat system.
In above-mentioned steps, after judging that the signal strength values of SampleRate VSAT satellite is lower than threshold value, also carry out a period of time the delay of (SamplePeriod count delay), burst difference can be avoided like this to be switched to the situation of marine satellite.
Step 304, the parts carrying out data communication with router four 04 are set to forbidden data communications status by described route judgement device 401.
In this example, see Fig. 4, the IP address of the network port that route judgement device 401 is connected with router four 04 is 192.168.1.1, the IP address of router four 04 is 192.168.1.2, VSAT modulator-demodulator 403 is 1.1.1.1 with the IP address of router four 04 interconnection network port, the network port IP address that marine satellite modulator-demodulator 405 is connected with router four 04 is the IP address of 2.2.2.2, VSAT satellite 402 is 10.0.0.1, and the IP address of marine satellite 406 is 20.0.0.1.
Between network card chip in described route judgement device 401 and networking port, also there is an analog switch, be illustrated in figure 5 the structural representation of embodiment of the present invention route judgement device inside, in figure, most of chip all has concrete chip model, its service behaviour and characteristic all can with reference to correlation technique files, do not carry out description one by one in the present embodiment, comprising controller 501, first network card chip 502, second network card chip 503, analog switch 504, switch 505, router network interface 506, VSAT network interface 507.
Described controller 501 connects the first network card chip 502 and the second network card chip 503 respectively, analog switch 504 is connected between the first network card chip 502 and switch 505, described switch 505 is connected with router network interface 506, described VSAT network interface 507 is connected with described second network card chip 503, described controller 501 is connected by I/O interface with described analog switch 504, for arranging the state of described analog switch 504.
Wherein, VSAT network interface 507 receive VSAT modulator-demodulator transmit signal strength signal intensity, controller 501 is sent to by the second network card chip 503, described controller 501 according to described signal strength signal intensity compared with decision threshold, if be greater than described decision threshold, the state of described analog switch 504 is set, analog switch 504 is made up of the TL3S110 chip of maturation as shown in FIG., it can realize the on-off of data message by the mode arranging low and high level, it is high level conducting that such as controller 501 arranges described TL3S110 chip by pin, then described analog switch 504 transmits the data between the first network card chip 502 and switch 505, if be set to low level cut-off, then described analog switch 504 stops the data between transmission first network card chip 502 and switch 505 (just to stop transmitting data, physical link does not cut off).
The router be connected with router network interface 506 orders to detect whether have data communication between the first network card chip 502 by ping order or other, when there being data communication, described router can select VSAT satellite routing table, thus connect VSAT satellite, when there is no data communication, described router can select marine satellite routing table, thus connects marine satellite.The effect that described analog switch 504 now plays is and according to the control of controller 501, router is adopted to be connected with which satellite and to communicate, when analog switch 504 is high level conducting state, then router ping order success, router sets up the communication connection with VSAT satellite, when analog switch 504 is low level off-state, then router ping order is unsuccessful, and router is set up and or the communication connection of satellite.
Also there is a switch 505 between described analog switch 504 and router network interface 506, it is analog switch 504 whether turn-off data forwarding capability for no matter, all will keep the Power supply of router network interface 506 always, thus there will not be the situation of router instability when ensureing the frequent transfer of data disconnected with unlatching router network interface 506.
Step 305, router four 04 checks that the network port (the IP address 192.168.1.1) state of connected route judgement device 401 is closed condition (ping is obstructed), then select the routing table of marine satellite, set up the connection with the network port (IP address 2.2.2.2) of marine satellite modulator-demodulator 405, thus connect (IP address 20.0.0.1) by marine satellite modulator-demodulator 405 and marine satellite 406, before this connection procedure, need marine satellite to connect the parameter configuration of dialing in described configuration file, when the connection with marine satellite 406 will be set up, the parameter called in described configuration file carries out dial-up connection.
Step 306, described route judgement device 401 continues the signal strength values of Real-time Collection VSAT satellite.
Step 307, after the signal strength values of the SampleRate collected (or other quantity) described VSAT satellite is higher than described threshold value (Threshold), enters step 308, otherwise returns step 306 continuous collecting and judge.
Step 308, the state of analog switch can be set by route judgement device 401, described router four 04 is according to the state (ping leads to) of the connected network port (IP address 192.168.1.1), then select the routing table of VSAT satellite, set up the connection with VSAT satellite 402 by VSAT satellite modem 403.
Wherein, the switch due to described route judgement device 401 keeps this to power to the described network port always, and the network port of router four 04 there will not be because powerup issue starts failed situation.
Step 309, router four 04 checks that the network port (the IP address 192.168.1.1) state of connected route judgement device 401 is open mode, then select the routing table of VSAT satellite, set up the connection with the network port (IP address 1.1.1.1) of VSAT satellite modem 403, thus connect (IP address 10.0.0.1) by VSAT satellite modem 403 and VSAT satellite 402.
Return step 302.
By the method and system of above-described embodiment, can select to carry out route handoff between the high marine satellite of communication cost price and the VSAT satellite of relative low price, achieve the expense reducing overocean communications, and ensure that the continuity of communication; By keeping the power supply to the network port always in the process of carrying out Route Selection, there will not be when ensure that and again enable this network port and start failed situation, ensure that the reliability of communication.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; the protection range be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. Satellite Road is by a decision method, it is characterized in that, comprises,
The signal strength values of the miniature earth station of Real-time Collection or small global station VSAT satellite;
Control router switching according to the signal strength values of described VSAT satellite and be connected to VSAT satellite or marine satellite.
2. a kind of Satellite Road according to claim 1 is by decision method, it is characterized in that, switch and be connected to VSAT satellite or marine satellite comprises further controlling router according to the signal strength values of described VSAT satellite, when the signal strength values of described VSAT satellite exceedes threshold value, control the switching of described router and be connected to VSAT satellite; When the signal strength values of described VSAT satellite is lower than threshold value, controls the switching of described router and be connected to marine satellite.
3. a kind of Satellite Road according to claim 2 is by decision method, it is characterized in that, switch and be connected to VSAT satellite or marine satellite comprises further controlling router according to the signal strength values of described VSAT satellite, according to the signal strength values conducting of described VSAT satellite or the data communication of shutoff and described router, described router is connected to marine satellite or VSAT satellite according to the conducting of described data communication or shutoff switching.
4. a kind of Satellite Road according to claim 3 is by decision method, it is characterized in that, remains the power supply of the network port carrying out data communication with described router.
5. a kind of Satellite Road according to claim 3 is by decision method, it is characterized in that, at described router according to the conducting of described data communication or turn off switching and be connected to marine satellite or VSAT satellite comprises further, described router, according to the conducting of described data communication or shutoff, selects corresponding routing table to connect corresponding satellite.
6. Satellite Road is by a decision system, it is characterized in that, comprises, VSAT satellite modem, marine satellite modulator-demodulator, router, route judgement device;
Described route judgement device is connected with described router with described VSAT satellite modem respectively, described router is connected with VSAT satellite by described VSAT satellite modem, and described router is connected with marine satellite by described marine satellite modulator-demodulator;
Described route judgement device passes through the signal strength values of the miniature earth station of described VSAT satellite modem Real-time Collection or small global station satellite, and is connected to VSAT satellite or marine satellite according to the signal strength values control router switching of described VSAT satellite.
7. a kind of Satellite Road according to claim 6 is by decision system, it is characterized in that, described route judgement device, also for when the signal strength values of described VSAT satellite exceedes threshold value, controls the switching of described router and is connected to VSAT satellite; When the signal strength values of described VSAT satellite is lower than threshold value, controls the switching of described router and be connected to marine satellite.
8. a kind of Satellite Road according to claim 7 is by decision system, it is characterized in that, described route judgement device comprises further, controller connects the first network card chip and the second network card chip respectively, analog switch is connected between the first network card chip and router network interface, VSAT network interface is connected with described second network card chip, and described router network interface is connected with described router;
VSAT network interface receives the signal strength signal intensity that VSAT modulator-demodulator transmits, controller is sent to by the second network card chip, described controller according to described signal strength signal intensity compared with decision threshold, the conducting of analog switch or the state of shutoff are set according to comparative result, described analog switch conducting or the data communication turned off between the first network card chip and described router.
9. a kind of Satellite Road according to claim 8 is by decision system, it is characterized in that, described route judgement device comprises further, switch, be connected between described analog switch and described router network interface, for remaining the power supply of the network port carrying out data communication with described router.
10. a kind of Satellite Road according to claim 8 is by decision system, it is characterized in that, described router, according to whether carrying out data communication with described route judgement device, selects corresponding routing table to connect corresponding satellite.
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|---|---|---|---|---|
| CN105591685A (en) * | 2015-12-28 | 2016-05-18 | 休斯网络技术有限公司 | VSAT broadband satellite communication cross beam switching system and method |
| CN105591685B (en) * | 2015-12-28 | 2019-01-22 | 休斯网络技术有限公司 | Across the beam switchover system and method for VSAT wideband satellite communication |
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