A Design Method for Unicast Label Routing Applicable to Space-Based Networks
A design method and network technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc., to achieve the effect of reducing complexity and simplifying the implementation of routing switching
Active Publication Date: 2021-11-09
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 space-based networks, aiming to solve the problem of unicast label routing calculation of satellite nodes in space-based networks based on label forwarding. By optimizing and improving the IS-IS unicast routing protocol, this solution realizes the routing control technology on the space-based layer 2 label network, and can realize the shortest path calculation to other space-based network satellite nodes at the link layer, and generate The unicast label forwarding table of the base network satellite node establishes a layer-2 label forwarding path in each space-based network satellite node, and realizes the layer-2 label routing and forwarding of data in the space-based network. This solution does not depend on the three-layer IP routing technology, can simplify the implementation of routing switching of satellite nodes in space-based networks, reduce the complexity of the control plane and support large-capacity label switching, and does not need to re-allocate IP addresses to support the rapid movement of nodes, especially suitable for Space-based networks with limited on-board resources and dynamically changing 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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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