CN112995033A - Space-based network satellite-ground integrated exchange method based on labels - Google Patents
Space-based network satellite-ground integrated exchange method based on labels Download PDFInfo
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- CN112995033A CN112995033A CN202110213865.6A CN202110213865A CN112995033A CN 112995033 A CN112995033 A CN 112995033A CN 202110213865 A CN202110213865 A CN 202110213865A CN 112995033 A CN112995033 A CN 112995033A
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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]
- H04L45/502—Frame based
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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
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18584—Arrangements for data networking, i.e. for data packet routing, for congestion control
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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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Abstract
The invention discloses a label-based space-based network satellite-ground integrated exchange method, and relates to a networking technology in the field of satellite networks. A satellite-ground integrated exchange method suitable for a space-based network is designed mainly aiming at the application requirements of large-scale networking under the condition of satellite-borne resource limitation. By using the design idea of ground multi-protocol label switching for reference, the satellite-ground switching method of the label combined label is designed from the aspects of simplifying the on-satellite signaling flow and saving the protocol overhead, the scale of the satellite-borne backbone routing table can be greatly reduced by separating the core layer route and the access layer route of the space-based network, the expandability, the safety and the stability of the low-orbit satellite network route can be effectively improved, and the problem of large-scale networking under the condition of limited satellite-borne node resources can be finally solved.
Description
Technical Field
The invention discloses a space-based network satellite-ground integrated exchange method with labels combined, and relates to a networking technology in the field of satellite networks.
Background
At present, the research on the switching system based on-board processing at home and abroad mainly focuses on 3 aspects, namely fixed-length packet switching based on an on-board link layer, IP routing based on the on-board and MPLS switching;
based on the fixed-length packet switching of the link layer on the satellite, such as SPACEWAY3 and WINS satellite communication systems, the switching mode has the advantages of simple switching flow on the satellite and large switching capacity, and the switching capacity used in the actual satellite communication system is several Gbps; the method has the defects that the method does not support space networking and cannot be seamlessly interconnected with a ground IP network;
based on-satellite IP route switching, such as an IRIS satellite communication system, the switching mode has the advantages of being convenient for space networking and capable of being seamlessly interconnected with a ground IP network; the disadvantages are that the satellite exchange flow is complex, the exchange capacity is small, and the single satellite exchange capacity of the current system is about hundreds of Mbps.
Based on the exchange of MPLS (label switching), no mature system exists, and the exchange mode has the advantages of simple on-satellite exchange flow, large exchange capacity, convenience for spatial networking and capability of realizing seamless interconnection with a ground IP network; the disadvantages are complex signaling and large protocol overhead.
Disclosure of Invention
The invention aims to solve the technical problem that a label-based space-based network satellite-ground integrated switching method is provided by combining satellite characteristics by taking the design idea of traditional ground MPLS label switching as reference and aiming at realizing large-scale networking of a space-based network and on-satellite rapid high-capacity switching under the environment with limited satellite-borne processing capacity.
The technical scheme adopted by the invention is as follows:
a satellite-ground integrated exchange method of a label-based space-based network is realized based on a satellite communication network formed by a satellite user group, a satellite terminal and a space-based network satellite node, and comprises the following steps:
(1) various satellite users of the application layer generate IP data packets and access the IP data packets to access routers of various satellite terminals of the access exchange layer;
(2) the access routers of various satellite terminals search a stored mapping relation table according to IP addresses in the IP data packets, convert the IP data packets into a sky-based backbone exchange frame for forwarding in a sky-based network, and access the sky-based backbone exchange frame into a sky-based network satellite node of a core exchange layer;
(3) and a satellite-borne switch in the space-based network satellite node searches a stored inter-satellite switching forwarding table and correctly forwards the space-based backbone switching frame.
Wherein, the mapping relation table stored in the step (2) comprises the mapping of the IP address and the inter-satellite label.
Wherein, the inter-satellite switching forwarding table stored in the step (3) includes a mapping relation between a backbone label and an egress port of the satellite-borne switch.
The inter-satellite label consists of a satellite number of the satellite node and a port number of the satellite-borne switch.
Compared with the prior art, the invention has the following advantages:
the invention divides the low orbit satellite network into three layers of user, access and core. The user layer is based on IP addressing, the core layer uses self-defined label addressing, and the access layer finishes the mapping of the IP and the label. On one hand, the switching method can realize route isolation, the satellite is only responsible for route calculation of the core layer, and the access route scale can be enlarged; meanwhile, the problem of mobility of a user/feed side is solved; on the other hand, by introducing the label, the on-satellite fast table look-up forwarding can be realized. The invention can effectively realize the problems of rapid large-capacity exchange, broadband user movement, complex signaling interaction, safe routing and the like.
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FIG. 1 is a block diagram of an embodiment of the present invention.
Detailed Description
To practice the present invention, it will be further described with reference to FIG. 1. FIG. 1 is a schematic diagram of the architecture of the present invention.
Referring to fig. 1, a label-based space-based network satellite-ground integrated switching method is mainly illustrated, and is implemented based on a satellite communication network formed by a user group, a satellite terminal and a satellite node, and a space-based network satellite-ground integrated switching system is divided into an application layer, an access switching layer and a core switching layer. The application layer consists of various satellite user groups, and the satellite user groups mainly generate IP data; the access exchange layer consists of access routers deployed at various satellite terminals, and the access routers are used for storing a mapping relation table; the core exchange layer consists of space-based network satellite nodes, and the satellite-borne switch at the satellite nodes is used for storing an inter-satellite exchange forwarding table; the method specifically comprises the following steps:
(1) various satellite users of the application layer generate IP data packets and access the IP data packets to access routers of various satellite terminals of the access exchange layer;
(2) the access routers of various satellite terminals search a stored mapping relation table according to IP addresses in the IP data packets, convert the IP data packets into a sky-based backbone exchange frame for forwarding in a sky-based network, and access the sky-based backbone exchange frame into a sky-based network satellite node of a core exchange layer; the stored mapping relation table comprises the mapping of IP addresses and inter-satellite labels, and the inter-satellite labels consist of satellite numbers of satellite nodes and port numbers of satellite-borne switches;
(3) and a satellite-borne switch in the space-based network satellite node searches a stored inter-satellite switching forwarding table and correctly forwards the space-based backbone switching frame. The stored inter-satellite switching forwarding table comprises a mapping relation between a backbone label and an output port of the satellite-borne switch.
The embodiments of the present invention originally create a label-based space-based network satellite-ground integrated switching method for the problem of space-based network high-capacity switching in a satellite-borne limited environment, and the embodiments realize isolation of a space-based access route and a space-based network core route based on a distributed switching architecture, and realize rapid forwarding of a space-based switching frame in a space-based network based on a label switching mode.
Those of ordinary skill in the art will understand that: the implementation of a tag-based space-based network satellite-ground integration switching method may be performed by hardware or software associated with program instructions that, when executed, perform steps comprising the above-described method embodiments.
Claims (4)
1. A satellite-ground integrated exchange method of a label-based space-based network is realized based on a satellite communication network formed by a satellite user group, a satellite terminal and a space-based network satellite node, and is characterized by comprising the following steps:
(1) various satellite users of the application layer generate IP data packets and access the IP data packets to access routers of various satellite terminals of the access exchange layer;
(2) the access routers of various satellite terminals search a stored mapping relation table according to IP addresses in the IP data packets, convert the IP data packets into a sky-based backbone exchange frame for forwarding in a sky-based network, and access the sky-based backbone exchange frame into a sky-based network satellite node of a core exchange layer;
(3) and a satellite-borne switch in the space-based network satellite node searches a stored inter-satellite switching forwarding table and correctly forwards the space-based backbone switching frame.
2. The method according to claim 1, wherein the mapping relation table stored in the step (2) comprises mapping between IP addresses and inter-satellite labels.
3. The label-based space-based network satellite-ground integrated switching method according to claim 1, wherein the inter-satellite switching forwarding table stored in the step (3) includes a mapping relationship between a backbone label and an egress port of a satellite-borne switch.
4. The method for integrated switching between satellite and ground based on label of space-based network as claimed in claim 2, wherein the inter-satellite label is composed of satellite number of satellite node and port number of satellite-borne switch.
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Cited By (5)
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| CN113824639A (en) * | 2021-09-06 | 2021-12-21 | 天地信息网络研究院(安徽)有限公司 | Satellite network label switching method of complexity at terminal |
| CN113872672A (en) * | 2021-09-27 | 2021-12-31 | 中国电子科技集团公司第五十四研究所 | Satellite-to-ground label routing method for broadband user service intercommunication of low-orbit satellite network |
| CN114124189A (en) * | 2021-09-27 | 2022-03-01 | 中国电子科技集团公司第五十四研究所 | Low-rail load-bearing network inter-satellite link rapid protection method based on pressed preset label |
| CN114567370A (en) * | 2022-02-22 | 2022-05-31 | 中国电子科技集团公司第五十四研究所 | High-orbit backbone network distributed routing communication method |
| CN115150319A (en) * | 2022-09-02 | 2022-10-04 | 中国电子科技集团公司第五十四研究所 | Simple and complex star multicast routing method based on distributed control |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113824639A (en) * | 2021-09-06 | 2021-12-21 | 天地信息网络研究院(安徽)有限公司 | Satellite network label switching method of complexity at terminal |
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| CN114567370A (en) * | 2022-02-22 | 2022-05-31 | 中国电子科技集团公司第五十四研究所 | High-orbit backbone network distributed routing communication method |
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| CN115150319A (en) * | 2022-09-02 | 2022-10-04 | 中国电子科技集团公司第五十四研究所 | Simple and complex star multicast routing method based on distributed control |
| CN115150319B (en) * | 2022-09-02 | 2022-11-22 | 中国电子科技集团公司第五十四研究所 | Simple and complex star multicast routing method based on distributed control |
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