高效节能虚拟网络映射多反馈控制模型及算法

发布时间：2018-02-01 00:18

本文关键词： 虚拟网络映射多反馈控制高效节能资源整合软件定义网络　出处：《软件学报》2017年07期 　论文类型：期刊论文

【摘要】：网络虚拟化使得智能能耗感知网络部署成为可能.由于虚拟网络请求到来以及退出等动态性,引起底层网络资源分配以及回收,会对底层网络激活资源数量与集合范围产生影响;虚拟网络映射不仅决定了当前激活的底层网络资源数量与集合大小,而且作用于后续的虚拟网络映射.利用自动控制原理的反馈控制理论,研究不同虚拟网络映射之间的关系以及当前虚拟网络映射对激活底层网络资源集合产生的影响,并提出一种新的高效节能虚拟网络映射多反馈控制模型及算法.以控制底层网络休眠链路数量作为主反馈,消除主动休眠的底层网络链路数量与被动休眠的链路数量的偏差,抑制虚拟网络映射动态特征对求解最小底层网络激活资源集合的干扰;并以节点和链路映射为局部反馈,由大到小逐步调整主动休眠底层链路数量,快速地找到适合当前虚拟网络请求的最小底层网络资源集合.多反馈控制模型能够把虚拟网络映射在一个较小的节点和链路集合中,从而提高休眠节点和链路数量,实现高效节能虚拟网络映射.系统仿真结果验证了在非饱和状态下虚拟网络映射多反馈控制算法能够提高底层节点和链路休眠数量,显著减少系统能耗;且在负载周期性动态变化的饱和状态下,提高了虚拟网络接收率以及系统收益.
[Abstract]:Network virtualization makes intelligent energy consumption aware of network deployment possible. Because of the dynamic nature of virtual network request arrival and exit, it causes the bottom network resource allocation and recycling. Will have an impact on the number and range of the underlying network activation resources; Virtual network mapping not only determines the number and size of the current activated underlying network resources, but also acts on the subsequent virtual network mapping. Feedback control theory based on the principle of automatic control is used. The relationship between different virtual network maps and the influence of the current virtual network mapping on the activation of the underlying network resource set are studied. A new multi-feedback control model and algorithm for efficient energy-saving virtual network mapping is proposed, which takes the number of dormant links in the underlying network as the main feedback. The deviation between the number of active dormant and passive dormant links is eliminated, and the interference of virtual network mapping dynamic features to the solution of minimum bottom network activation resource set is suppressed. By mapping nodes and links into local feedback, the number of active dormant underlying links is adjusted step by step from large to small. The multi-feedback control model can map the virtual network into a smaller set of nodes and links. Thus, the number of dormant nodes and links is increased. The simulation results show that the multi-feedback control algorithm of virtual network mapping in unsaturated state can increase the number of nodes and link dormancy and reduce the system energy consumption. In the saturated state of cyclic dynamic change of load, the receiving rate and system income of virtual network are improved.
【作者单位】：湖州师范学院信息工程学院;华东师范大学计算机科学与软件工程学院;上海大学数学系;
【基金】：浙江省自然科学基金(LY17F020007) 国家自然科学基金(61501184,61370173,61503136) 湖州市科技计划(2014GZB02)~~
【分类号】：TP393.01
【正文快照】： Multiple Feedback Control Model and Algorithm for Energy Efficient Virtual NetworkEmbeddingCHEN Xiao-Hua1,2,LI Chun-Zhi1,CHEN Liang-Yu2,ZENG Zhen-Bing3,JIANG Yun-Liang11(School of Information Engineering,Huzhou University,Huzhou 313000,China)2(School of

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