考虑节能的拓扑聚合虚拟网映射算法  

Energy-aware virtual network embedding algorithm based on topology aggregation

作　　者：王博[1] 陈庶樵[1] 王志明[1] 王文钊[1] 

机构地区：[1]国家数字交换系统工程技术研究中心,郑州450002

出　　处：《计算机应用》2014年第6期1537-1540,1545,共5页journal of Computer Applications

基　　金：国家973计划项目(2012CB315901);国家863计划项目(2013AA013505)

摘　　要：网络虚拟化的关键问题是虚拟网映射,能耗开销的快速增长使得节能成为底层设施供应商关注的目标。针对虚拟网映射中的节能问题,提出一种集中使用网络拓扑的节能虚拟网映射算法。该算法引入接近度中心度概念和节点能力共同表征节点的重要程度,优先使用已工作节点进行资源整合使用,同时通过检验保证底层链路距离不会过长,有利于减少能耗和开销。实验仿真结果表明该算法在接受率达到70%、长期收益开销比达到75%的同时,使收益能耗比提高20%以上,与之前算法相比具有优势。The key issue of network virtualization is Virtual Network Embedding （VNE）, and the rapid growth of energy cost makes infrastructure providers concern energy conservation. An energy conservation VNE algorithm that centrally used network topology for saving energy on VNE problem was presented. The importance of the nodes was characterized by the conception of closeness centrality and the capabilities of the nodes, and the working nodes were preferentially used for resources integration to reduce energy consumption and calculation cost, that ensured the distance of the substrate links won＇t be too long. The simulation results show that the proposed algorithm improves revenue-energy ratio more than 20% when accept ratio reaches 70% and revenue cost ratio reaches 75%, and has advantages compared with the previous algorithms.

关 键 词：网络虚拟化 虚拟网映射 拓扑聚合 接近度中心度 节能 

分 类 号：TP393.0[自动化与计算机技术—计算机应用技术]