CN106209646A - The spaceborne IP switch label of a kind of multimedia satellite communication system and distribution method thereof - Google Patents
The spaceborne IP switch label of a kind of multimedia satellite communication system and distribution method thereof Download PDFInfo
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- CN106209646A CN106209646A CN201610465514.3A CN201610465514A CN106209646A CN 106209646 A CN106209646 A CN 106209646A CN 201610465514 A CN201610465514 A CN 201610465514A CN 106209646 A CN106209646 A CN 106209646A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
- H04L45/507—Label distribution
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/20—Hop count for routing purposes, e.g. TTL
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/302—Route determination based on requested QoS
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Abstract
The spaceborne IP switch label of a kind of multimedia satellite communication system and distribution method thereof, spaceborne IP switch label is made up of ingress label field, outlet label field and label check field.Spaceborne IP switch label distribution method includes that forwarding equivalence class distinguishes stage, forwarding label information table generation phase and label distribution stage.The present invention can adapt to the increase of the lifting of multi-beam GEO multimedia satellite communication power system capacity, number of users, it is possible to decrease controls the information occupancy to space communication resource in multi-beam GEO multimedia satellite communication.
Description
Technical field
The present invention relates to a kind of spaceborne IP switch label being applied to multi-beam GEO multimedia satellite communication system and
Its distribution method, the spaceborne IP switch label of a kind of multimedia satellite communication system and distribution method thereof, can be applicable to broadband
Multimedia satellite communication technical field.
Background technology
Multimedia satellite communication system is the combination of digital multimedia, satellite communication broadcast and the Internet, purport
At the service platform unified for a series of new satellite communication applications offers, it is achieved Large Copacity broadband data communication, carry for user
Access and various interactive multimedia services for high-quality Internet.
Along with the development of technology, the widely used multibeam technique of multimedia satellite communication system realizes power system capacity
Significantly promote.Multi-beam GEO multimedia satellite communication system typically by a multi-beam wideband multimedia telecommunication satellite,
The three parts compositions such as ground application system (user and gateway station), network management control center.Wherein, the many matchmakers in multi-beam broadband
Body communication satellite provides the user wave beam of user oriented service, towards the service access wave beam of gateway station and network-oriented management
The wave beam of control centre；Satellite can be transparent forwarding, it is also possible to possess spaceborne exchange capacity.Owing to possessing spaceborne exchange energy
The multi-beam GEO multimedia satellite communication system of power can realize single-hop communication between user, therefore along with communication and network skill
The development of art and the continuous lifting of aerospace level device capabilities, spaceborne switching technology is developed rapidly.
Currently, multi-beam GEO multimedia satellite communication system spaceborne exchange mainstream technology include subband exchange and
Asynchronous transfer mode (ATM) exchanges.Wherein, subband switching technology is the most highly developed, and Typical Representative is that U.S. broadband is complete
Ball system (WGS), supports the exchange of 1872 2.6MHz subbands, and system transmission capacity is up to 2.4Gbps.
20th century 80 and the nineties, atm technology obtains tremendous development, is once considered as the optimal of unified terrestrial communication networks
Option.Being affected by, the same time starts the multi-beam GEO wideband multimedia satellite of research and development and uses ATM to be grouped as on star one after another
Switching technology, Typical Representative is Japanese superelevation the Internet satellite (WINDS) system supporting ATM exchange on star.Atm technology is certain
The satellite communication system demand to bandwidth availability ratio, flow-control and network management can be met to a certain extent.But, ATM
Complicated signaling in exchange makes system Construction extremely complex, have impact on multi-beam GEO multimedia satellite communication system
Construction and development.Meanwhile, terrestrial wideband Integrated Service Digital Network(ISDN) (B-ISDN, the Broadband-based on ATM
Integrated Services Digital Network) also fail to successfully, be the Internet based on IP agreement on the contrary with
Ease for use and opening are finally won.
Being widely used of IP agreement promotes satellite communication network progressively to draw close to IP network, the many matchmakers in multi-beam GEO broadband
IP switching technology is used, by propelling multimedia satellite communication system Incorporate construction and promote that broadband is defended on body satellite
Star communication system organically blends with ground network.But in terms of spaceborne IP exchange, although all carry out substantial amounts of grinding both at home and abroad
Study carefully, emulate and test with ground validation, but the current report also not having real system to apply.
Be applied to multi-beam GEO multimedia satellite communication system spaceborne IP exchange it is important that solve at limited device
Under part ability condition, exchange agreement processes and the problem of Large Volume Data exchange.To this end, need to study the closest in design
Relevant spaceborne IP switch label and distribution method thereof, simplify the control flow that switch type packet transmission channel is set up, promote skill
Art realizes.
Summary of the invention
The technical solution of the present invention: propose a kind of multi-beam GEO multimedia satellite communication system of being applied to
Spaceborne IP switch label and distribution method thereof, the spaceborne IP switch label of a kind of multimedia satellite communication system and distributor thereof
Method, this switch label and exchange flow process thereof can adapt to lifting and the use of multi-beam GEO broadband multimedia satellite system capacity
Amount purpose increases, and can reduce the control information occupancy to space communication resource in satellite communication.
The technical solution of the present invention is: as the core of spaceborne IP technology, it is many that one is applied to multi-beam GEO broadband
The spaceborne IP switch label of media satellite communication system, including: ingress label field, outlet label field and label check word
Section；It is service fields after described spaceborne IP switch label；
The input slogan that ingress label field references space-borne switchboard is corresponding, this input slogan corresponding one fixing
Uplink user spot beam or gateway station service access spot beam or network management control central beam；In described network management control
The heart is the mechanism that multi-beam GEO multimedia satellite communication system is managed and is controlled；
Outlet label field is divided into two parts, and front portion represents the outfan slogan that space-borne switchboard is corresponding, and this is defeated
Go out port numbers and downlink user spot beam or gateway station service access spot beam or network management control central beam is corresponding, after
A part represents the priority of service fields；
The label value of ingress label field and outlet label field composition is verified by label check field；
Preset the highest order of ingress label field for judge flag, when ingress label field is 8, entrance mark
The highest order of signature section is i.e. the 8th, according to judging flag, it is judged that what input slogan was corresponding is network management control center
Wave beam or uplink user spot beam or gateway station service access spot beam, if correspondence is cardiac wave in network management control
Bundle, the service fields after the spaceborne IP switch label that this ingress label field is corresponding is used for multi-beam GEO wideband multimedia satellite
The management of communication system and control, if correspondence is uplink user spot beam or gateway station service access spot beam, this entrance
Service fields after the spaceborne IP switch label that label field is corresponding is used for transmitting multi-beam GEO multimedia satellite communication system
The business datum of system；
Preset the next most significant bit of ingress label field for judge flag, when ingress label field is 8, entrance
The highest order of label field is i.e. the 7th, judges flag according to next most significant bit, it is judged that what input slogan was corresponding is up use
Family spot beam or gateway station service access spot beam, if correspondence is uplink user spot beam, this ingress label field pair
Service fields after the spaceborne IP switch label answered carrys out user terminal；If correspondence is gateway station Service Access point ripple
Bundle, the service fields after the spaceborne IP switch label that this ingress label field is corresponding is from gateway station.
Ingress label field uses binary coding to constitute.
The front portion of outlet label field uses bit map form to constitute, and the rear portion of outlet label field uses
Binary coding is constituted.
Label check field uses cyclic redundancy check (CRC) (CRC) mode to verify label value.
When ingress label field is 8 bit, the next most significant bit of described ingress label field is 8bit, and a secondary high position is
7bit.
A kind of spaceborne IP switch label distribution method being applied to multi-beam GEO multimedia satellite communication system, bag
Include forwarding equivalence class and distinguish stage, forwarding label information table generation phase and label distribution stage.
Forwarding equivalence class is the one group of packet processed in the way of equivalence in repeating process.For same forwarding
Equivalence class, needs to insert identical IP switch label in packets headers.Due in multi-beam GEO multimedia satellite communication system
Only one spaceborne IP switch, the forwarding equivalence class being therefore grouped only with the priority attribute phase of its destination address and data
Close.
It is as follows that forwarding equivalence class distinguishes stage etch:
(1) obtain user or gateway station or grouped data that network management control center sends send to destination and data
Priority attribute；
(2) when data to send to destination different, the grouped data sent for user adds different spaceborne IP switch labels,
The front portion of the outlet label field of spaceborne IP switch label is different；When sending to that destination is identical but the priority attribute of data
Difference, the rear portion of the outlet label field of spaceborne IP switch label is different；
When system supports N level service priority, the forwarding equivalence class of corresponding same wave beam is N kind.
In order to use what the mode of Tag switching realized message quickly to exchange forwarding, need each node maintenance in systems
Forwarding label information table.Forwarding label information table, based on route information table, adds spaceborne IP switch label after routing table.
Forwarding label information table generation phase step is as follows:
(3) route information table of multi-beam GEO multimedia satellite communication system is generated according to the routing algorithm set,
Route information table includes next-hop node and the output port of grouped data；Next-hop node is user's local gateway or multi-beam
GEO multimedia satellite communication another user intrasystem or gateway station or network management control center；Output port is
Local network or the intrasystem satellite of multi-beam GEO multimedia satellite communication；
(4) route information table step (3) generated adds spaceborne IP switch label and generates forwarding label information table, spaceborne
IP switch label includes input label and output label, and input label is ingress switch label, and output label is egress switch mark
Sign；Forwarding label information table needs on-demand or regularly updates and be saved in multi-beam GEO multimedia satellite communication system
Each node；
Label distribution stage etch is as follows:
(5) when re-routing event occurs or forwarding label information table needs regularly renewal, multi-beam GEO satellite communication system
In service source user by control link, first send label request message to multi-beam GEO satellite；
(6) multi-beam GEO satellite writes down the request message that service source user sends, and is transmitted to business place user；
(7) after business place user receives label request message, according to pre-determined route, spaceborne IP exchange mark is generated
Sign and this spaceborne IP switch label is sent to multi-beam GEO satellite；Multi-beam GEO satellite can in forwarding label information table
Increasing list item according to spaceborne IP switch label, to update forwarding label information table, multi-beam GEO satellite is by the forwarding mark of this renewal
Sign information table and be sent to service source user, complete label distribution.
User, after obtaining forwarding label information table, therefrom obtains corresponding spaceborne IP switch label, is i.e. equivalent to obtain
Obtained label distribution path, follow-up transmission and the exchange that i.e. can be carried out business by satellite.
Different list items in the corresponding described label information table of the different forwarding equivalence class of the grouped data that user sends.This
Bright compared with prior art have the advantage that
(1) the spaceborne IP switch label that the present invention proposes can adapt to multi-beam GEO multimedia satellite communication system
The increase of Satellite wave beam, and then the ability of adaptive system capacity boost；Meanwhile, this label is for number of users increase, business
Prioritization rank increase etc. the most all has the good suitability.
(2) the spaceborne IP switch label distribution method that the present invention proposes has simple feature, and user need not adopt
Label distribution path can be quickly obtained with complicated tag distribution protocol.
(3) when multi-beam GEO broadband connections number of satellite increases and there is inter-satellite link, the spaceborne IP that the present invention proposes
Switch label and distribution method thereof can realize expanded application by simple amendment.
Accompanying drawing explanation
Fig. 1 is the multi-beam GEO multimedia satellite communication system that the present invention applies
Fig. 2 is the spaceborne IP switch label composition that the present invention is applied to multi-beam GEO multimedia satellite communication system
Schematic diagram；
Fig. 3 is a kind of ingress label allocation table；
Fig. 4 is a kind of front portion exporting label allocation table；
Fig. 5 is a kind of rear portion exporting label allocation table；
Fig. 6 is the forwarding label information table that the present invention proposes；
Fig. 7 is the spaceborne IP switch label distribution that the present invention is applied to multi-beam GEO multimedia satellite communication system
Flow chart.
Detailed description of the invention
The basic ideas of the present invention: propose a kind of to be applied to the spaceborne of multi-beam GEO multimedia satellite communication system
IP switch label and distribution method thereof, the spaceborne IP switch label of a kind of multimedia satellite communication system and distribution method thereof.
Spaceborne IP switch label is made up of ingress label field, outlet label field and label check field.Spaceborne IP switch label
Distribution method includes that forwarding equivalence class distinguishes stage, forwarding label information table generation phase and label distribution stage.The present invention
Can adapt to the increase of the lifting of multi-beam GEO multimedia satellite communication power system capacity, number of users, it is possible to decrease multi-beam
GEO multimedia satellite communication controls the information occupancy to space communication resource.For meeting carrying of satellite system capacity
Rise, the demand such as the increase of number of users, towards multi-beam GEO multimedia satellite communication system, it is proposed that a kind of spaceborne IP
Switch label and distribution method thereof.The flow scheme design designed by simple label and simplify, is reduced in satellite communication and controls
The information occupancy to space communication resource, and the multi-beam GEO broadband satellite interconnected by multi-satellite can be further applied
Communication System Design.
The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, multi-beam GEO multimedia satellite communication system of the present invention is by a multi-beam broadband
Multimedia communication satellite, terrestrial user (ICBM SHF satellite terminal), gateway station, network management control center composition.Wherein, satellite possesses star
Carry IP exchange capacity, it is provided that the user wave beam of user oriented service, towards the service access wave beam of gateway station and network-oriented
The wave beam of management control center；Terrestrial user is user's earth station of system；Gateway station is by various standards or special connecing
Jaws equipment, completes wideband multimedia system and ground IP, public exchanging telephone network (PSTN, Public Switched
Telephone Network), integrated service data network (ISDN, Integrated Services Digital
Network), the interconnection and interflow function of the network such as ATM, frame relay (FR, Frame Relay), be that system provides business service
Key data is originated, and the terminal of other communication network can access multi-beam GEO multimedia satellite communication system by gateway station
System.Owing to multi-beam GEO multimedia satellite communication system is a comprehensive multiple business, the answering of network structure maneuverability
Miscellaneous system, it is therefore desirable to spaceborne OAMAgent, gateway station OAMAgent and user's OAMAgent etc. coordinate, in managing and controlling
System is comprehensively planned, manages and is controlled by the heart, it is achieved user's management, configuration management, performance management, fault management, peace
The functions such as full management, accounting management, Service control, call treatment.
For said system, the one spaceborne IP switch label of the present invention is as in figure 2 it is shown, include: ingress label field, go out
Mouth label field and label check field.
48 uplink user spot beams, 3 gateway station service access spot beams and 1 network management and control are comprised for one
The multi-beam GEO multimedia satellite communication system of wave beam, each uplink user spot beam or gateway station Service Access point ripple
The all corresponding space-borne switchboard input slogan of bundle or network management control central beam.
Owing to total wave beam is 52, therefore ingress label may be designed as 1 byte.
In order to ingress label is quickly identified, by the 7th of the ingress label of 1 byte, i.e. highest order, it is set to sentence
Disconnected flag, when it is 1, what input slogan was corresponding is i.e. network management control central beam, at this moment need not further
Identify other positions of ingress label；Meanwhile, by the 6th of the ingress label of 1 byte, i.e. next most significant bit, it is also configured as judging mark
Knowing position, when it is 1, what input slogan was corresponding is i.e. gateway station service access spot beam, due to only 3 Service Access points
Wave beam, it is only necessary to last 2 of the ingress label of identification 1 byte, i.e. the 1st and the 2nd, so that it may be judged as which is believed further
Close station service access spot beam.
By identifying latter 6 of the ingress label of 1 byte, i.e. can determine whether particularly row user spot beam.
Above-mentioned ingress label specific design is as shown in Figure 3.When ingress switch label is 128, map network management controls ripple
Bundle；When ingress switch label is 64～66, the most corresponding 3 gateway station service access spot beams；When ingress label is 0～47,
The most corresponding 48 uplink user spot beams.
In order to outlet label is simply identified, it is ensured that the simplification of satellite load processes, before outlet label field
A part uses bit map form to constitute.
Owing to the total wave beam of system is 52, the front portion therefore exporting label may be designed as 7 bytes, as shown in Figure 4, removes
Byte 1 high 4 as priority outside, other represent the outfan slogan that space-borne switchboard is corresponding respectively, and correspond to down
Row user's spot beam or gateway station service access spot beam or network management control central beam.
The rear portion of outlet label uses binary coding, as it is shown in figure 5, use 4 bits, it is provided that 16 grades excellent
First level.
Numbers of beams as total in system increases, or the priority of service fields increases, and above-mentioned ingress label and outlet label are all
Can be extended by the way of increasing byte.
The spaceborne IP switch label distribution method being applied to multi-beam GEO multimedia satellite communication system is spaceborne IP
The core content of exchange, distinguishes stage, forwarding label information table generation phase and label distribution stage including forwarding equivalence class.
Stage is distinguished for forwarding equivalence class, sends business to the terrestrial user B under different beams with terrestrial user A simultaneously
Illustrate with as a example by user C:
If business mutual with terrestrial user B for terrestrial user A includes speech, data, video and Email, go up simultaneously
The business of stating is divided into 4 grades of priority, then, the forwarding equivalence class of terrestrial user A business datum is 4 kinds.
If with ground C alternating voice and data business while of terrestrial user A, and user B and user C is not same
Under wave beam, the most above-mentioned business is divided into 2 grades of priority, then, the forwarding equivalence class of terrestrial user A data service increases by 2 kinds,
The most total forwarding equivalence class is 6 kinds；If user B and user C is under same wave beam, the most above-mentioned business is divided into 2 grades preferentially
Level, but owing to the spaceborne IP exchange that forwarding equivalence class is corresponding is the most relevant with wave beam, therefore, turning of terrestrial user A business datum
Send out equivalence class and remain as 4 kinds.
For forwarding label information table generation phase, forwarding label information table is based on route information table, in routing table
Rear interpolation spaceborne IP switch label.Forwarding label information table is corresponding with concrete forwarding equivalence class.
Therefore, it is necessary first to generate multi-beam GEO multimedia satellite communication system according to the routing algorithm set
Route information table, as shown in the front portion of Fig. 6.Wherein, route information table includes next-hop node and the output of grouped data
Port；Next-hop node is user's local gateway or multi-beam GEO multimedia satellite communication another user intrasystem
Or gateway station or network management control center；Output port is local network or multi-beam GEO multimedia satellite communication system
Satellite in system.
Then, after the route information table generated, spaceborne IP switch label is added.Spaceborne IP switch label includes input mark
Signing and output label, input label is ingress switch label, and output label is egress switch label；
Forwarding label information table needs on-demand or timing update and be saved in multi-beam GEO multimedia satellite communication system
Each node in system.
For the label distribution stage, giving its detailed process as shown in Figure 7, concrete steps include:
1) the service source user in multi-beam GEO satellite communication system is by controlling link, first sends label to satellite
Request message；
2) multi-beam GEO satellite writes down request message, and continues to be sent to business place user；
3), after business place user receives label request message, the spaceborne IP switch label of oneself is sent to satellite；
4) satellite is by the spaceborne IP switch label binding of forwarding equivalence class with acquisition, increases phase in forwarding label information table
The entry answered, and send the relevant entries in forwarding label information table to source user；
5) service source user is by the spaceborne IP switch label binding of forwarding equivalence class with acquisition, sets up corresponding Tag switching
Path.
Above-mentioned spaceborne IP switch label distribution method achieves terrestrial user in system, letter in the very simple mode of one
Close spaceborne IP switch label between station, network management control center etc. the most alternately, improve the control flow of system
Efficiency also reduces the occupancy to the system communication resource.
The spaceborne IP switch label being applied to multi-beam GEO multimedia satellite communication system of the present invention and
Distribution method has been applied to design and the verification experimental verification of Ka frequency range multi-beam GEO multimedia satellite communication system, it was demonstrated that
Effectiveness of its design is with practical.
Non-elaborated part of the present invention belongs to techniques well known.
Claims (7)
1. the spaceborne IP switch label of a multimedia satellite communication system, it is characterised in that: including: ingress label field, go out
Mouth label field and label check field；It is service fields after described spaceborne IP switch label；
Described ingress label field, represents the input slogan that spaceborne IP switch is corresponding, and this input slogan correspondence is solid
Fixed uplink user spot beam or gateway station service access spot beam or network management control central beam；Described network management control
Center processed is the mechanism that multi-beam GEO multimedia satellite communication system is managed and is controlled；
Described outlet label field, is divided into two parts, and front portion represents the outfan slogan that spaceborne IP switch is corresponding, should
Outfan slogan and downlink user spot beam or gateway station service access spot beam or network management control central beam are corresponding,
Rear portion represents the priority of service fields；
The label value of ingress label field and outlet label field composition is verified by label check field；
Preset the highest order of ingress label field for judge flag, according to judging flag, it is judged that input slogan pair
Answer is network management control central beam or uplink user spot beam or gateway station service access spot beam, if correspondence
Being network management control central beam, the service fields after the spaceborne IP switch label that this ingress label field is corresponding is used for many ripples
The management of bundle GEO multimedia satellite communication system and control, if correspondence is uplink user spot beam or gateway station industry
Business access point wave beam, the service fields after the spaceborne IP switch label that this ingress label field is corresponding is used for transmitting multi-beam GEO
The business datum of multimedia satellite communication system；
Preset the next most significant bit of ingress label field for judge flag, judge flag according to next most significant bit, it is judged that defeated
What inbound port number was corresponding is uplink user spot beam or gateway station service access spot beam, if correspondence is uplink user point
Wave beam, the service fields after the spaceborne IP switch label that this ingress label field is corresponding carrys out user terminal；If correspondence
Being gateway station service access spot beam, the service fields after the spaceborne IP switch label that this ingress label field is corresponding is come self-confident
Close station.
The spaceborne IP switch label of a kind of multimedia satellite communication system the most according to claim 1, it is characterised in that: institute
Stating ingress label field uses binary coding to constitute.
The spaceborne IP switch label of a kind of multimedia satellite communication system the most according to claim 1, it is characterised in that: institute
The front portion stating outlet label field uses bit map form to constitute, and the rear portion of described outlet label field uses two
Scale coding is constituted.
The spaceborne IP switch label of a kind of multimedia satellite communication system the most according to claim 1, it is characterised in that: institute
Stating label check field uses cyclic redundancy check (CRC) mode to verify label value.
The spaceborne IP switch label of a kind of multimedia satellite communication system the most according to claim 1, it is characterised in that: when
When ingress label field is 8 bit, the next most significant bit of described ingress label field is 8bit, and a secondary high position is 7bit.
6. the spaceborne IP switch label distribution method of a multimedia satellite communication system, it is characterised in that: include forwarding equivalence
Class distinguishes stage, forwarding label information table generation phase and label distribution stage.
It is as follows that described forwarding equivalence class distinguishes stage etch:
(1) obtain user or gateway station or grouped data that network management control center sends send to the excellent of destination and data
First level attribute；
(2) when when sending to wave beam difference residing for destination of data, the grouped data sent for user adds different spaceborne IP
Switch label, the front portion of the outlet label field of spaceborne IP switch label is different；Identical but several when sending to destination's wave beam
According to priority attribute difference time, the rear portion of the outlet label field of spaceborne IP switch label is different；
Described forwarding label information table generation phase step is as follows:
(3) route information table of multi-beam GEO multimedia satellite communication system, route is generated according to the routing algorithm set
Information table includes next-hop node and the output port of grouped data；Next-hop node is user's local gateway or multi-beam GEO
Multimedia satellite communication another user intrasystem or gateway station or network management control center；Output port is local
Network or the intrasystem satellite of multi-beam GEO multimedia satellite communication；
(4) route information table step (3) generated adds spaceborne IP switch label and generates forwarding label information table, and spaceborne IP hands over
Dehorn label include input label and output label, and input label is ingress switch label, and output label is egress switch label；Turn
Sending out label information table needs on-demand or timing to update and be saved in multi-beam GEO multimedia satellite communication system and respectively save
Point；
Described label distribution stage etch is as follows:
(5) when re-routing event occurs or forwarding label information table needs regularly renewal, in multi-beam GEO satellite communication system
Service source user, by controlling link, first sends label request message to multi-beam GEO satellite；
(6) multi-beam GEO satellite writes down the request message that service source user sends, and is transmitted to business place user；
(7) after business place user receives label request message, according to pre-determined route, spaceborne IP switch label is generated also
This spaceborne IP switch label is sent to multi-beam GEO satellite；Multi-beam GEO satellite in forwarding label information table according to spaceborne
IP switch label increases list item, and to update forwarding label information table, then, multi-beam GEO satellite is by the forwarding label of this renewal
Information table is sent to service source user, completes label distribution.
The spaceborne IP switch label distribution method of a kind of multimedia satellite communication system the most according to claim 6, it is special
Levy and be: the different list items in the corresponding described label information table of the different forwarding equivalence class of the grouped data that user sends.
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| CN108574635A (en) * | 2017-03-09 | 2018-09-25 | 华为技术有限公司 | A kind of routing priority configuration method, equipment and controller |
| CN109660438A (en) * | 2018-12-07 | 2019-04-19 | 北京卫星信息工程研究所 | A kind of ground system of satellite communication |
| CN110120833A (en) * | 2019-05-14 | 2019-08-13 | 中国电子科技集团公司第五十四研究所 | A kind of star ground cotasking management system |
| CN110601975A (en) * | 2019-08-05 | 2019-12-20 | 中国人民解放军陆军工程大学 | Label distribution method suitable for multi-satellite and multi-beam satellite communication system |
| US11596104B2 (en) | 2019-01-30 | 2023-03-07 | Shenzhen University | Fruit and vegetable picking method and device based on machine vision and storage medium |
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