弹性光网络中节点优先的虚拟网络映射算法

发布时间：2018-04-04 18:17

本文选题：光通信　切入点：弹性光网络　出处：《中国激光》2017年09期

【摘要】：针对弹性光网络中虚拟网络映射的资源消耗问题,综合考虑节点、链路对虚拟网络映射资源需求的影响,提出了节点优先的虚拟网络映射算法。所提算法先对虚拟节点依据节点权值进行排序,然后为虚拟节点分配满足资源需求的物理节点,并采用贪心原则映射虚拟节点,最后利用协同映射方式将虚拟链路映射到长度最短的无环物理路径上,以达到减小虚拟网络资源消耗的目的。仿真结果表明,所提算法能有效减小虚拟网络资源消耗并降低网络请求阻塞率。
[Abstract]:In order to solve the problem of resource consumption of virtual network mapping in elastic optical networks, a node-first virtual network mapping algorithm is proposed considering the effect of nodes and links on the resource requirements of virtual network mapping.The proposed algorithm first sorts the virtual nodes according to the weights of the nodes, then allocates the physical nodes to meet the resource requirements for the virtual nodes, and maps the virtual nodes according to the greedy principle.Finally, the virtual link is mapped to the shortest physical path in order to reduce the resource consumption of the virtual network.Simulation results show that the proposed algorithm can effectively reduce the consumption of virtual network resources and reduce the blocking rate of network requests.
【作者单位】：河北工程大学信息与电气工程学院;
【基金】：河北省自然科学基金(F2014402075,F2017402068) 河北省高等学校科学技术研究青年基金(QN2016090)
【分类号】：TN929.1

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