SDN-based space-air-ground controller deployment architecture and control method

Abstract

The invention discloses an SDN-based space-space-ground controller deployment architecture and a control method, the controller architecture comprises three network segments of a space-based network,a space-based network and a foundation network, and the space-based network realizes controller dynamic deployment on an unmanned aerial vehicle; introducing an upper SDN controller to the top of eachnetwork segment controller; wherein the SDN network architecture of the upper SDN controller comprises an infrastructure layer, a network control layer and an application layer from bottom to top; the network control layer is used for collecting and maintaining a global topological structure, a link state and flow state information, issuing a control message, introducing an SDN architecture, decoupling a data plane and a control plane, providing a unified programming interface, and configuring and managing nodes in a network in a unified manner. According to the invention, multiple optimization objectives of minimizing the propagation time delay between the switch and the controller and improving the load balance degree of the controller are realized.

Description

technical field [0001] The present invention relates to an air-space-ground integrated network and a controller deployment strategy, in particular to an SDN-based space-space-ground controller deployment architecture and control method. Background technique [0002] 1. Air-space-ground integrated network [0003] With the development of science and technology and the times, people's demand for communication is getting higher and higher, and the realization of large-scale global communication has become the research goal of people. Traditional terrestrial wireless communications are facing explosive growth in terms of the number of users and services to be supported, and it is expected that future networks will provide more resources than current networks to cope with the increasing traffic demands of various services. Space-Air-Ground Integrated Network (SAGIN) forms a large-scale heterogeneous network through the integration of space-based network, space-based network and ...

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to solve the problem of dynamic controller deployment under the air-space-ground integrated network, and propose a controller deployment architecture and method based on the air-space-ground integrated network. The architecture introduces the air-space-ground integrated network and SDN technology to solve Coupling data and control plane, using an improved k-means method to determine the number and location of controllers, to achieve the multi-optimization goals of minimizing the propagation delay between switches and controllers and improving the load balance of controllers

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