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采用优化方法来研究光网络业务发生改变时的虚拓扑重构问题 ,并提出了相应的混合整数线性规划算法 主要的思路是当业务发生改变时 ,寻找既能保证网络性能又对现有业务中断最小的虚拓扑 对影响虚拓扑重构的因素进行了研究 ,发现 ,如果使网络性能达到次优而不是最优可以大大减少对现有业务的中断
The optimization method is used to study the virtual topology reconfiguration problem when the optical network service is changed. The main idea of the corresponding mixed integer linear programming algorithm is that when the service is changed, it is necessary to search for both the network performance and the existing service interruption The smallest virtual topologies study the factors that affect the virtual topology reconfiguration and find that if the performance of the network is sub-optimal rather than optimal, it can greatly reduce the interruption to existing services