Resilient topology design for free space optical cellular backhaul networking
Resilient topology design for free space optical cellular backhaul networking
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DOI：
10.1109/glocomw.2014.7063479
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发表时间：
2014-12
期刊：
影响因子：
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通讯作者：
Yuan Li;N. Pappas;Vangelis Angelakis;M. Pióro;D. Yuan
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文献类型：
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作者：
Yuan Li;N. Pappas;Vangelis Angelakis;M. Pióro;D. Yuan
随着蜂窝网络的密集化，回程解决方案倾向于采用无线方式来降低成本。自由空间光（FSO）链路正在成为RF的一种有吸引力的、安全的和高速率的替代方案。为了确保可靠的蜂窝回程，必须在网络设计阶段为节点之间的不相交路径提供冗余。本文提出了具有成本效益的解决方案，使用FSO链路和镜子，可以用来升级蜂窝回程与预先部署的光纤。提出了一种整数规划模型来逼近最优FSO回程设计，保证每个节点对之间的K条不相交路径。我们使用现实的情况下，通过解决模型来演示一些最佳的回程拓扑结构。我们还说明了K和光纤的数量对最优解的影响。
With cellular networks' densification, backhaul solutions tend to go wireless to reduce costs. Free space optic (FSO) links are becoming an appealing, secure and high rate alternative to RF. To ensure a reliable cellular backhaul, redundancy provisions for disjoint paths between the nodes must be made in the network design phase. This paper presents cost-effective solutions, using FSO links and mirrors, that can be employed to upgrade a cellular backhaul with pre-deployed optical fibers. An integer programming model is introduced to approach optimal FSO backhaul design, guaranteeing K-disjoint paths between each node pair. We use realistic scenarios to demonstrate some optimal backhaul topologies by solving the model. We also illustrate the impact of K and the number of optical fibers on optimal solutions.