Space-based networking routing method and equipment based on centralized and distributed combination

Abstract

The invention discloses a space-based networking routing method and equipment based on centralized and distributed combination. The method comprises the following steps that: a ground controller generates whole network topology prediction information in a period according to network information of a space-based network; the topology prediction information is analyzed by each space-based network node, and a link state notification containing full-period topology prediction information is generated; each space-based network node divides time periods according to the topology prediction information, so that the network topology in each time period is kept unchanged; each space-based network node selects a link state announcement of a time period to form a prediction topology, and a routing table is calculated; and each space-based network node detects the own link state in real time, compares the link state with the predicted topology, and triggers routing update under the condition that information is different. According to the space-based networking routing method disclosed by the invention, the prediction topology in each time period is kept unchanged, the network topology information can be quickly acquired at the starting moment of each time period, the routing convergence is effectively accelerated, the abnormal condition of the network can be sensed in real time, and the routing table item can be updated in time.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a space-based network routing method and equipment based on the combination of centralized and distributed. Background technique [0002] With the advancement of user needs and technology, traditional satellite communication systems have begun to develop towards space-based space-based information networks. Routing is one of the key technologies for efficient satellite networking. There are two main implementations of routing: distributed and centralized. In distributed routing, each node calculates the routing table based on the network-wide link state information collected from signaling interactions with adjacent nodes, and then forwards data packets based on the routing table calculated by itself; in centralized routing, a controller The entire network route is calculated uniformly, and the calculated routing table is sent to each node, so that each node can ...

AI Technical Summary

Problems solved by technology

Centralized routing completes routing calculations through a unified ground controller. In the case of a large number of space-based network nodes that cannot be deployed globally, the ground controller can only be directly connected to a few satellite nodes. Centralized routing is difficult for the ground controller to effectively perceive in real time Real-time routing management and other issues after network abnormalities

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