Route device and method for raising service quality of space information network

Abstract

This invention relates to a route device for increasing service quality of day-base information networks including an input module, an initializing module, a negative computation module, a positive commutation module and an output module. This invention also relates to a route method including: transforming the current network to a first topological structure, transforming the link price of the first topology to generate a second topological structure according to the interruption probability of the link, computing the shortest path based on time delay from the nodes to the destination node in the second topological structure and judge if the time delay value of the shortest path from the destination node to the source node meets the restriction condition, if not, the time delay value of the shortest path from the nodes to the destination node is registered and the shortest path based on link price from the destination node to the source node is computed, judging if the time delay value of said path meets the restriction condition, if so, said path is the optimum one, otherwise, the positive computation program is called to search for the optimum path from the source node to the destination.

Description

technical field [0001] The present invention relates to a device, a routing device and a method for improving the quality of service (QoS) of a space-based information network, and in particular to a method for obtaining an optimal QoS path by predicting topology changes of a space-based information network The disclosed QoS routing device and method belong to the technical field of mobile communication. Background technique [0002] The space-based information network is a satellite network (space-based), which integrates space-ground information, consists of various types of satellite systems in different orbits, and is interconnected and organically constituted in accordance with the principle of maximum and effective comprehensive utilization of space information resources. system. The network integrates a variety of aerospace information systems for both military and civilian purposes. It has independent information acquisition, storage, processing and distribution cap...

AI Technical Summary

Problems solved by technology

These algorithms can reduce the impact of network topology dynamics on data transmission and reduce the rerouting rate of the network, but at the same time the algorithm sacrifices the blocking rate of the network. Because many paths in the network are deleted due to insufficient call duration, the entire network traffic will be mainly Concentrating on certain links will greatly increase the blocking rate of the system, and at the same time, it will also bring disadvantages such as uneven distribution of network traffic and low overall network utilization. This phenomenon is especially obvious when the network load rate is high.

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