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Routing method and routing system

A routing and routing table technology, applied in the field of communication, can solve problems such as suboptimal path selection, reduction of computing and storage resources, routing failure, etc., to achieve fast path reconstruction, realize path reconstruction, and ensure continuity. Effect

Active Publication Date: 2018-04-24
CHINA UNITED NETWORK COMM GRP CO LTD
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  • Abstract
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Problems solved by technology

In the satellite network using distributed routing technology, each satellite node does not need to maintain the link state database of the entire network, and only needs to calculate the next hop according to the topology and corresponding routing criteria, which reduces the use of satellites for routing. Computing and storage resources needed to process part of the network. However, once congestion occurs in the network, only the satellites adjacent to the congested node will know, which may lead to suboptimal path selection or even routing failure.

Method used

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  • Routing method and routing system

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Embodiment Construction

[0048] In order to enable those skilled in the art to better understand the technical solution of the present invention, the routing method and routing system provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0049] figure 1 A flowchart of a routing method provided by Embodiment 1 of the present invention, such asfigure 1 As shown, the method includes:

[0050] Step 101, the LEO layer satellite judges whether the path in the LEO shortest routing table is congested, if yes, execute step 102; if not, execute step 104.

[0051] Step 102, the LEO layer satellite judges whether the path in the LEO backup routing table is congested, if not, execute step 103, and if yes, execute step 105.

[0052] Step 103, the LEO layer satellite switches the routing protocol to the LEO backup routing table, and forwards the delay-sensitive service data according to the LEO backup routing table, and the process ends.

[0053] Step 10...

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Abstract

The invention discloses a routing method and a routing system. The method comprises the steps: enabling an LEO layer satellite to judge whether a path in an LEO shortest routing table is congested ornot; judging whether a path in an LEO standby routing table is congested or not if the LEO layer satellite determines that the path in the LEO shortest routing table is congested, or else switching arouting protocol to the LEO standby routing table, and carrying out the forwarding of the time delay sensitive business data according to the LEO standby routing table. The method can achieve the quick solving of the network congestion during congestion, can achieve the quick path reconstruction, and guarantees the continuity of business data.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a routing method and a routing system. Background technique [0002] As early as the early 1990s, people began to study the routing technology in the satellite network architecture. The initial routing technology was based on a single-layer satellite network composed of LEO layer satellites. Typical reference network models are Iridium and Tcledcsic network. With the development of multi-layer space networking technology, the routing problem based on multi-layer satellite network has gradually become a new research focus. In the ground network routing technology, the routing nodes in the network calculate the routing table according to the link state database of the whole network. The update of the link state database depends on the change of the link state. These routing change information need to be flooded and transmitted in the whole network. , causing the maintenance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/721H04L12/801H04L12/803H04B7/185
CPCH04B7/18584H04L45/38H04L47/12H04L47/122
Inventor 韩江雪
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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