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Future Internet 2019, 11(1), 15; https://doi.org/10.3390/fi11010015 (registering DOI)

Multi-Topology Routing Algorithms in SDN-Based Space Information Networks

Science and Technology on Complex Electronic System Simulation Laboratory, Space Engineering University, Beijing 101416, China
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Received: 2 December 2018 / Revised: 27 December 2018 / Accepted: 8 January 2019 / Published: 12 January 2019
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Abstract

Aiming at the complex structure of the space information networks (SIN) and the dynamic change of network topology, in order to design an efficient routing strategy, this paper establishes a SIN management architecture based on Software-defined Networking (SDN). A routing algorithm flow of the spatial information network based on a snapshot sequence is designed. For different spatial tasks with different Quality of Service (QoS) requirements, the concept of integrated link weight is proposed. The Warshall–Floyd algorithm is used to design the optimal routing strategy. A Task-oriented Bandwidth Resource Allocation (TBA) algorithm is proposed for multiple spatial tasks in the same link. Simulation results show that the algorithm can effectively guarantee the priority transmission of important tasks and avoid the unnecessary waste of bandwidth resources. View Full-Text
Keywords: space information networks; SDN; snapshot sequence; link weight; Warshall-Floyd algorithm space information networks; SDN; snapshot sequence; link weight; Warshall-Floyd algorithm
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Meng, X.; Wu, L.; Yu, S. Multi-Topology Routing Algorithms in SDN-Based Space Information Networks. Future Internet 2019, 11, 15.

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