研究目的
To propose an SDN-enabled integrated space-ground network simulation platform that adapts dynamic satellite network topology and employs customized routing algorithms for dynamic end-to-end communication path establishment.
研究成果
The integrated space-ground network simulation platform based on ONOS effectively separates the control plane from the forwarding plane, utilizing dynamic network topology and routing strategies tailored for satellite scenarios. Future work will focus on constructing more specific resource models to enhance performance across different constellations and algorithms.
研究不足
The capabilities of STK are limited to user-specified parameters and models for link budget calculations. The platform's performance in different constellations and algorithms requires further improvement.
1：Experimental Design and Method Selection:
The federated platform applies SDN structure to the integrated space-ground information network, separating the control plane from the forwarding plane. ONOS is used as the SDN controller, STK for simulating satellite orbits, and Mininet for emulating the satellite network topology.
2：Sample Selection and Data Sources:
Satellite orbits and positions are simulated using STK, which provides orbit status, inter-satellite visibility, and spatial link budget.
3：List of Experimental Equipment and Materials:
ONOS controller, Mininet network simulator, STK astronautically physics simulators.
4：Experimental Procedures and Operational Workflow:
The platform combines four tools: astronautical physics simulators for orbit data, network simulation platform for dynamic topology, SDN controller platform for routing, and graphical user interface for visualization.
5：Data Analysis Methods:
The platform uses custom applications in ONOS for routing calculations and intent installation, with path selection based on least hops or maximum available bandwidth.
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