CN105743717B - Incorporate Information Network system and communication means based on SDN technology - Google Patents
Incorporate Information Network system and communication means based on SDN technology Download PDFInfo
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- CN105743717B CN105743717B CN201610289222.9A CN201610289222A CN105743717B CN 105743717 B CN105743717 B CN 105743717B CN 201610289222 A CN201610289222 A CN 201610289222A CN 105743717 B CN105743717 B CN 105743717B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/12—Discovery or management of network topologies
Abstract
The invention discloses a kind of Incorporate Information Network system and communication means based on SDN technology, it is mainly used for improving the utilization rate and network service quality of satellite communication network resource.Including ground satellite station (STA), ground data center (DC), geo-synchronous orbit satellite (GEO), low-orbit satellite (LEO) and wireless communication link each other.Pass through the low layer SDN controller (D-controller) disposed in earth station and GEO, SDN switch is disposed on LEO to form a kind of distributed Information Network based on SDN, all standing is carried out to entire earth surface using more LEO of multi-track, in the coverage area of GEO, global control is carried out by the controller on GEO, form an Information Network covering the whole world, GEO accesses ground network by ground satellite earth station STA simultaneously, the centralized management to D-controller is carried out using the SDN super controller (S-controller) disposed in ground data center, to realize merging for satellite network and ground fixed network.
Description
Technical field
The invention belongs to satellite network technical field, in particular to a kind of multi-level Satellite Networking technology and satellite network
The management of resource and dispatching method.
Background technique
Spatial information net is of great significance for national defence, remote sensing, the fields such as navigation, can be with cross-region, across operation
Quotient realizes uninterrupted communication in global range.Incorporate refers to that it is terrestrial user that Space-based Network, which is incorporated Ground Application,
Service is provided, including centered on satellite and having merged the types of applications service of satellite communication.It is realized from initial satellite transoceanic
Communication, arrives digital multimedia broadcast (dmb) via satellite or all kinds of earth observation satellite systems, and Incorporate has become and satellite phase
The basic demand of the types of applications system of pass.
Incorporate information network can not only guarantee the weaker areas of ground infrastructures such as meagrely-populated, geography is remote
For accessing internet, and it can support deep space exploration, earth observation, space flight measurement and control, satellite navigation, air transportation, ocean boat
Row, emergency management and rescue are dashed forward at stability maintenance, a variety of special applications such as smart city.
SDN has control and forwarding separation, device resource virtualization, common hardware and the big characteristic of software programmable three, no
It is only that whole network is more unitized in the horizontal direction, standardize, and allow in vertical direction network opening, standardization,
It is programmable, allow Internet resources to be easier, more effectively be used.
By multi-level SDN network Technology application in Incorporate Information Network, using the new network architecture
Improve Incorporate information network performance, reducing the construction costs and maintenance difficulties, reaches and significantly improve network resource usage
The purpose of rate.
Summary of the invention
In order to solve the overall network topology management of spatial information net, the flexible dispatching and distribution of inter-satellite link resource, sheet
Invention proposes a kind of Incorporate Information Network system and communication means based on SDN technology.
Technical solution used by system of the invention is: a kind of Incorporate spatial information net based on SDN technology
Network system, it is characterised in that: including data Layer, control layer and application layer；
The data Layer is formed by disposing SDN switch on more low-orbit satellite LEO in multiple orbital planes, is utilized
Wireless communication link between LEO carries out networking；
The control layer is made of geo-synchronous orbit satellite GEO and the supercentral super controller of ground data；
The application layer is answered by what is run in the super controller in geo-synchronous orbit satellite GEO and ground data center
It is constituted with program, the satellite communication network entirely based on SDN is neatly managed and controlled.
Preferably, more low-orbit satellite LEO in the data Layer are according to certain tilt profiles in multiple orbital planes
On, flight path realizes being completely covered including the two poles of the earth to the entire earth.
Preferably, being provided with the geo-synchronous orbit satellite GEO in three equator overhead, three earth in the control layer
The low layer SDN controller (D-Controller) being deployed on geosynchronous satellite GEO in vertical-type control framework, every ground
Ball geosynchronous satellite GEO is interior with oneself coverage area of certain moment and can establish the low-orbit satellite LEO of communication connection composition
SDN network；Three geo-synchronous orbit satellite GEO are wirelessly connected with the earth ground stations STA in respective coverage area, are led to
Earth ground stations STA access gateway access ground network is crossed, landline network insertion data center is utilized；Data center top
There is the super SDN controller (S-Controller) of top layer in administration, and geo-synchronous orbit satellite GEO is managed using super controller
In lower-level controllers, obtain overall network topology and network state information in real time, efficiently managed and dispatched.
Technical solution used by method of the invention is: a kind of Incorporate spatial information net based on SDN technology
The communication means of network system, it is characterised in that: the following steps are included:
Step 1: information source A issues data packet, the low-orbit satellite LEO of access communications optimal quality；
Step 2: low-orbit satellite LEO is according to the forwarding table stored in SDN switch and the destination address of this data packet
Whether can matching judge directly to be forwarded by low-orbit satellite LEO；
If so, stay of two nights B receives purpose signal, this process terminates；
If it is not, then executing following step 3；
Step 3: transferring low layer SDN controller (D-Controller) belonging to this low-orbit satellite LEO to；
Step 4: the network state information that low layer SDN controller is grasped according to it, the forwarding table stored according to it judge this
Can the destination address of data packet be transmitted to another low-orbit satellite LEO in its control range；
If so, low layer SDN controller is transmitted to target low-orbit satellite LEO, stay of two nights B receives purpose signal, this process
Terminate；
If it is not, then executing following step 5；
Step 5: low layer SDN controller delivers a packet to ground SDN super controller；
Step 6: the super SDN controller in ground judges that the destination address of data packet is according to its global network view grasped
It is no low-orbit satellite LEO to be forwarded to be sent to by different low layer SDN controllers (D-Controller)；
If so, issuing target low layer SDN controller, following step 7 is then executed；
If it is not, then data packet is redirected or abandoned, this process terminates；
Step 7: issuing low layer SDN controller, target low-orbit satellite LEO is issued by low layer SDN controller, stay of two nights B connects
Purpose signal is received, this process terminates.
The innovation of the invention consists in that:
(1) existing satellite network is divided into three abstract levels, data plane (SDN exchange by the network architecture for utilizing SDN
Machine), control plane (SDN controller), using plane (SDN application program).
(2) by being disposed on LEO (low-orbit satellite), GEO (geo-synchronous orbit satellite), STA (earth ground stations)
Controller or interchanger control the overall situation of whole network come the Global coverage for realizing satellite network and earth station.
(3) the characteristics of utilizing SDN technology flexible programmable, realizes the flexible processing of resource on star.For example, according to not of the same trade or business
The requirement of real-time of business, bandwidth requirement, calculates and the requirements such as storage resource, the global control ability using SDN controller are not
The response priority different with traffic assignments, calculating and storage resource etc..
(4) network topology management is carried out using the global view of SDN.For example, the topologies change speed of satellite network
Comparatively fast, the global view ability that can use SDN controller is monitored the link circuit condition of network, obtains newest open up at any time
Flutter state.
Detailed description of the invention
Fig. 1: the system architecture figure of the embodiment of the present invention；
Fig. 2: the network topological diagram of the embodiment of the present invention；
Fig. 3: the SDN hierarchical diagram of the embodiment of the present invention；
Fig. 4: the system deployment figure of the embodiment of the present invention；
Fig. 5: the communication flow diagram of the embodiment of the present invention.
Specific embodiment
Understand for the ease of those of ordinary skill in the art and implement the present invention, with reference to the accompanying drawings and embodiments to this hair
It is bright to be described in further detail, it should be understood that implementation example described herein is merely to illustrate and explain the present invention, not
For limiting the present invention.
See Fig. 1, Fig. 2 and Fig. 3, a kind of Incorporate Information Network based on SDN technology provided by the invention
The fixed network on satellite communication network and ground has been carried out integration in logic according to the hierarchical design thought of SDN by system,
It is abstracted as three levels, data Layer, control layer and application layer.SDN switch is disposed on multiple LEO in multiple orbital planes
Composition data layer, geo-synchronous orbit satellite GEO and the supercentral super controller of ground data constitute control layer, GEO sum number
Application layer is constituted according to the application program run in the super controller in center.
(1) data Layer: according to more LEO are distributed in multiple orbital planes at certain inclination angle, flight path is to the entire earth
Realize being completely covered including the two poles of the earth.SDN switch is disposed on LEO, is carried out using the wireless communication link between LEO
Networking.
(2) control layer: covering entirely for all areas in addition to terrestrial pole may be implemented in the GEO satellite in three equator overhead
Lid.Vertical-type is controlled the lower-level controllers in framework to be deployed on three GEO, every GEO and oneself coverage area of certain moment
LEO composition SDN network that is interior and can establish communication connection.Since different moments LEO is different from the relative position of GEO, so
This network structure belongs to the dynamic structure with certain regularity.Meanwhile the earth station in three GEO and respective coverage area
STA is wirelessly connected, and accesses ground network by STA access gateway, using landline network insertion data center, simultaneously
The super controller for disposing top layer on the data centre, the lower-level controllers in GEO are managed using super controller, are obtained in real time
Overall network topology and network state information are taken, is efficiently managed and is dispatched.
(3) application layer: deployment application layer is soft on the controller of three GEO and the super controller at ground data center
Part neatly manages and controls the satellite communication network entirely based on SDN.
The present embodiment divides every aspect according to the structure of Fig. 3.It is specifically disposed in the way of Fig. 4.Its
Middle A1, A2, A3 are three LEO in A orbital plane, and B1, B2, B3 are three LEO in B orbital plane, and C1, C2, C3 are C rail faces
On three LEO dispose SDN switch on it in this nine LEO composition data layers.D-Con1, D-Con2, D-Con3 are
Three GEO, the present embodiment are disposing SDN bottom controller above, and STA1, STA2, STA3 are three ground satellite stations, as
Access net connection satellite network and ground network.Passing through ground fixed network is connected to ground DC (in data each other for they
The heart), super controller (S-Con) is disposed in DC.By this four controller composition control layers.The network being mounted on control layer
Application APP constitutes application layer.
Communication process is by taking Fig. 5 as an example.Firstly, user terminal and the optimal LEO of communication quality establish connection, session is initiated,
This LEO can directly forward message according to the judgement of the destination address of call request, if it is possible to which directly forwarding is then transmitted directly to
This communication is completed in receiving end, this data packet can be transmitted to GEO (D- belonging to this LEO if it cannot directly forward
Con), whether D-Con can judge destination address in remaining two GEO (D-Con) institute according to the network information that it is grasped at this time
It in control range, if another GEO belonging to destination address can be found, forwards, is forwarded by another GEO (D-Con)
To the LEO in destination address overhead, communication is completed.If can not find GEO belonging to destination address, this data packet is passed through into STA
Ground S-Con is issued, is carried out judging whether this destination address is reachable by super controller, it is fixed to select if unreachable again
To or abandon this data packet, relay to corresponding LEO completion if being sent to corresponding GEO (D-Con) by STA up to if
Communication.
It should be understood that the part that this specification does not elaborate belongs to the prior art.
It should be understood that the above-mentioned description for preferred embodiment is more detailed, can not therefore be considered to this
The limitation of invention patent protection range, those skilled in the art under the inspiration of the present invention, are not departing from power of the present invention
Benefit requires to make replacement or deformation under protected ambit, fall within the scope of protection of the present invention, this hair
It is bright range is claimed to be determined by the appended claims.
Claims (3)
1. a kind of Incorporate Information Network system based on SDN technology, it is characterised in that: including data Layer, control
Layer and application layer；
The data Layer by more low-orbit satellite LEO in multiple orbital planes dispose SDN switch form, using LEO it
Between wireless communication link carry out networking；
The control layer is made of geo-synchronous orbit satellite GEO and the supercentral super controller of ground data；
The application layer is by the application journey that runs in the super controller in geo-synchronous orbit satellite GEO and ground data center
Sequence is constituted, and is neatly managed and controlled to the satellite communication network entirely based on SDN；
The geo-synchronous orbit satellite GEO in three equator overhead, three geo-synchronous orbit satellites are provided in the control layer
The low layer SDN controller being deployed on GEO in vertical-type control framework, every geo-synchronous orbit satellite GEO and certain moment
Oneself coverage area is interior and can establish the low-orbit satellite LEO of communication connection composition SDN network；Three geostationary orbits are defended
Star GEO is wirelessly connected with the earth ground stations STA in respective coverage area, is connect by earth ground stations STA access gateway
Enter ground network, utilizes landline network insertion data center；The super SDN controller of top layer is deployed in data center,
The lower-level controllers in geo-synchronous orbit satellite GEO are managed using super controller, in real time obtain overall network topology and
Network state information is efficiently managed and is dispatched.
2. the Incorporate Information Network system according to claim 1 based on SDN technology, it is characterised in that:
More low-orbit satellite LEO in the data Layer are according to certain tilt profiles in multiple orbital planes, and flight path is to whole
A earth realizes being completely covered including the two poles of the earth.
3. a kind of communication means of the Incorporate Information Network system based on SDN technology, it is characterised in that: including with
Lower step:
Step 1: information source A issues data packet, the low-orbit satellite LEO of access communications optimal quality；
Step 2: low-orbit satellite LEO according to the destination address of the forwarding table that is stored in SDN switch and this data packet whether
Can matching to judge directly be forwarded by low-orbit satellite LEO；
If so, stay of two nights B receives purpose signal, this process terminates；
If it is not, then executing following step 3；
Step 3: transferring low layer SDN controller belonging to this low-orbit satellite LEO to；
Wherein, the geo-synchronous orbit satellite GEO in three equator overhead, three geo-synchronous orbit satellites are provided in control layer
The low layer SDN controller being deployed on GEO in vertical-type control framework, every geo-synchronous orbit satellite GEO and certain moment
Oneself coverage area is interior and can establish the low-orbit satellite LEO of communication connection composition SDN network；
Step 4: the network state information that low layer SDN controller is grasped according to it, the forwarding table stored according to it judge this data
Can the destination address of packet be transmitted to another low-orbit satellite LEO in its control range；
If so, low layer SDN controller is transmitted to target low-orbit satellite LEO, stay of two nights B receives purpose signal, this process terminates；
If it is not, then executing following step 5；
Step 5: low layer SDN controller delivers a packet to ground SDN super controller；
Step 6: the super SDN controller in ground judges that the destination address of data packet whether may be used according to its global network view grasped
To forward low-orbit satellite LEO to be sent to by different low layer SDN controllers；
If so, issuing target low layer SDN controller, following step 7 is then executed；
If it is not, then data packet is redirected or abandoned, this process terminates；
Step 7: issuing low layer SDN controller, target low-orbit satellite LEO is issued by low layer SDN controller, stay of two nights B receives mesh
Signal, this process terminates.
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| CN106452560B (en) * | 2016-09-23 | 2019-08-09 | 北京工业大学 | A kind of communication system based on backbone satellite node and earth station |
| CN106452883A (en) * | 2016-10-21 | 2017-02-22 | 上海卫星工程研究所 | A spatial information network space-based test system and a work method thereof |
| CN106685511A (en) * | 2016-11-02 | 2017-05-17 | 北京邮电大学 | Spatial information network architecture |
| CN106788681A (en) * | 2016-12-29 | 2017-05-31 | 北京邮电大学 | A kind of information forwarding method and space information network system |
| CN109302226A (en) * | 2017-07-24 | 2019-02-01 | 北京空间技术研制试验中心 | Incorporate network communication method |
| CN109121177B (en) * | 2018-07-27 | 2021-12-28 | 中国电子科技集团公司电子科学研究院 | Space-based network routing control system and method |
| CN113098606B (en) * | 2018-12-28 | 2022-03-01 | 长沙天仪空间科技研究院有限公司 | Optical communication method |
| CN110493131B (en) * | 2019-09-24 | 2021-06-01 | 大连大学 | Design method of spatial information network routing strategy under SDN architecture |
| CN110730131B (en) * | 2019-10-22 | 2020-07-17 | 电子科技大学 | SDN satellite network multi-QoS constraint routing method based on improved ant colony |
| CN111092818B (en) * | 2019-11-28 | 2022-03-04 | 中国空间技术研究院 | Multilayer multi-domain satellite network topology abstraction method based on service time delay |
| CN110972168B (en) * | 2019-12-16 | 2022-05-03 | 重庆邮电大学 | Method for dynamically placing space-ground integrated network SDN controller according to requirements |
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