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为满足日益增长的业务需求,光网络需要根据需求进行增长型设计,以提升网络容量和性能。相比现有的光网络中的单芯光纤,多芯光纤可以成倍地提高光纤纤芯密度,为光网络的增长扩容提供更大的容量。该文研究了基于多芯光纤的增长型网络最小成本规划问题,通过建立和求解整数线性规划模型,得到最小新增网络成本和网络设施铺设方案。结果显示:多芯光纤与单芯光纤混合铺设策略可以使新增网络成本达到最小,拓扑增广也可以降低最小新增网络成本。
To meet the growing business demands, optical networks need to be scaled-up to meet their needs to increase network capacity and performance. Compared with the single optical fiber in the existing optical network, the multi-core optical fiber can exponentially increase the optical fiber core density and provide more capacity for the optical network to grow and expand. This paper studies the problem of minimum cost planning for growth network based on multi-core fiber. By setting up and solving the integer linear programming model, the minimum new network cost and the laying of network facilities are obtained. The results show that the strategy of hybrid laying of multi-core fiber and single-core fiber can minimize the cost of newly added network, and the expansion of topology can also reduce the minimum cost of newly added network.