Multi-controller Placement in Software Defined Satellite Networks: A Meta-heuristic Approach
Wei wei Jiang, Haoyu Han, Yang Zhang, Jianbin Mu · 2024
With the increase in satellite meg-constellations, network management has become increasingly complex, and the software-defined network idea has been introduced into modern satellite networks. This study considers the multi-controller placement problem in software-defined satellite networks and decomposes the problem into two sub-problems: SDN controller placement and switch-controller assignment. A meta-heuristic approach based on AVOA is proposed to solve the two sub-problems step-by-step, with the optimization objective of network reliability maximization, which has often been neglected in previous studies. Numerical experiments demonstrate that the AVOA-based solution outperforms baselines based on the NSGA-II and particle swarm optimization algorithms in terms of control delay, load-balancing capability, and reliability.