期刊名称：International Journal of Computer Science and Network Security
印刷版ISSN：1738-7906
出版年度：2020
卷号：20
期号：7
页码：77-85
出版社：International Journal of Computer Science and Network Security
摘要：Reconfiguration of all-optical WDM networks is an important task performed by the network operators to re-optimize the allocation of network resources. Multicast applications such as video conference and telemedicine are increasingly in demand on the network. Thus, our study focuses on the reconfiguration of multicast connection paths. A multicast connection path is supposed to be a light-tree. The reconfiguration problem studied here is to find a sequence of configurations with minimum cost that allows to migrate an optical flow from a current configuration of a set of light-trees to a final configuration of a set of light-trees. To solve the problem, we propose a method that is based on a minimum cost feedback vertex set approach. The numerical results show that our method reduces flow interruptions more than a traditional minimum feedback vertex set approach.
