Unicast label routing design method suitable for space-based network
A design method and network technology, applied in data exchange networks, radio transmission systems, digital transmission systems, etc., to achieve the effect of reducing complexity and simplifying the implementation of routing switching
Active Publication Date: 2021-06-15
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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[0005] The invention discloses a unicast label routing design method suitable for space-based networks, aiming to solve the problem of unicast label routing calculation of satellite nodes in space-based networks based on label forwarding
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[0019] The following combination figure 1 The preferred embodiments of the present invention are described, and it should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0020] figure 1 A typical example of unicast label routing generated by an improved link-state routing protocol IS-IS for a space-based network consisting of 2 satellite terminals, 4 GEO satellites and 1 gateway station is given. The communication entity in the figure The types are GEO satellites, gateway stations, and satellite terminals. GEO satellites are connected through inter-satellite links, and GEO satellites and gateway stations are connected through feeder links. As space-based network satellite nodes, both GEO satellites and gateway stations run the improved link state routing protocol IS-IS. Satellite terminals are connected to GEO satellites through satellite-ground l...
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The invention discloses a unicast label routing design method suitable for a space-based network, and aims to solve the problem of unicast label routing calculation of space-based network satellite nodes based on label forwarding. According to the scheme, an IS-IS unicast routing protocol is optimized and improved, so that a routing control technology on a space-based two-layer label network is realized, shortest path calculation to other space-based network satellite nodes can be realized on a link layer, and a unicast label forwarding table to other space-based network satellite nodes is generated; therefore, a two-layer label forwarding path is established at each space-based network satellite node, and two-layer label routing forwarding of data in the space-based network is realized. The scheme does not depend on a three-layer IP routing technology, space-based network satellite node routing switching implementation can be simplified, control plane complexity can be reduced, large-capacity label switching can be supported, IP addresses do not need to be redistributed, so that rapid movement of the nodes is supported, and the scheme is particularly suitable for space-based networks with limited on-satellite resources and dynamically-changed links.
Description
technical field [0001] The invention relates to the technical field of space-ground integrated network communication, in particular to a design method suitable for unicast label routing between satellite nodes of a space-based network. Background technique [0002] The space-ground integrated network is an information network composed of satellites with different orbits, types and characteristics, constellations and corresponding ground infrastructure. They are connected together through inter-satellite and satellite-ground links. According to the different functions of satellite nodes, they can be divided into It is space-based network, space-based access network and ground node network. The space-based network mainly adopts layered deployment of multi-functional satellites or ground gateway stations distributed on different orbital planes such as GEO, IGSO or HEO to achieve global seamless coverage. It is mainly used for the extension and expansion of the ground network an...
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Login to View More IPC IPC(8): H04L12/723H04L12/721H04B7/185H04L45/50
CPCH04L45/502H04L45/12H04B7/18584
Inventor 张亚生何辞谷聚娟董飞虎王旭阳申曲马广龙曹建军孙晨华
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP