基于网络资源相关性的虚拟网络映射算法  

Network resource correlation-aware virtual network mapping algorithm

作　　者：孙素云[1] 彭利民[2] Sun Suyun;Peng Limin(School of Information Technology,Guangdong Industry Polytechnic,Guangzhou 510300,China;College of Mathematics&Informa-tics,South China Agricultural University,Guangzhou 510642,China)

机构地区：[1]广东轻工职业技术学院信息技术学院,广州510300 [2]华南农业大学数学与信息学院,广州510642

出　　处：《计算机应用研究》2023年第3期885-889,共5页Application Research of Computers

基　　金：国家自然科学基金资助项目(61103037);广东轻工职业技术学院科研项目(KJ2021-15)。

摘　　要：针对网络虚拟化环境中资源利用率较低的问题,通过建立资源相关性度量模型,刻画虚拟节点和物理顶点之间的匹配程度,根据虚拟节点和物理顶点之间的资源相关性,将虚拟节点映射到资源相关性较强的物理顶点上;为了降低虚拟链路的映射路径长度,通过建立节点间邻接关系模型,将相邻的虚拟节点映射到邻接的物理顶点上。实验结果表明,提出的虚拟网络映射算法均衡了物理网络资源的分布状态,降低了虚拟网络映射的资源代价,提高了虚拟网络请求接受率。Aiming at the problem of low resource utilization in network virtualization environment, this paper proposed a resource correlation measurement model for measuring the fitness degree between virtual node and substrate vertex, then it mapped virtual node to substrate vertex having strong resource correlation value, which was the resource correlation between virtual node and substrate vertex.In order to reduce the mapping path length of virtual links, it mapped the adjacent virtual node to the adjacent substrate vertex by using the adjacency relationship model between nodes.Experimental results show that the distribution of substrate network resource is balanced, the resource cost of virtual network mapping is reduced, and the acceptance rate of virtual network requests is improved effectively by using the proposed virtual network mapping algorithm.

关 键 词：网络虚拟化 虚拟网络映射 相关性 资源分配 

分 类 号：TP393.04[自动化与计算机技术—计算机应用技术]