刘焕淋^1,,,
胡浩¹,
熊翠连¹,
陈勇²,
向敏²,
马跃³
1.重庆邮电大学重庆市光纤通信技术与网络重点实验室 重庆 400065
2.重庆邮电大学自动化学院 重庆 400065
3.国网冀北电力有限公司信息通信分公司 北京 100053
基金项目:国家自然科学基金(61275077)，重庆市基础与前沿研究项目(2015jcyjA40024)，国家电网公司科学技术项目

详细信息

作者简介:刘焕淋：女，1970年生，教授，研究方向为光通信技术与未来网络
胡浩：男，1995年生，硕士生，研究方向为灵活光网络路由
熊翠连：女，1992年生，硕士生，研究方向为光网络虚拟化技术
陈勇：男，1963年生，教授，研究方向为光通信技术、传感检测
向敏：男，1974年生，博士，研究方向为智能电网，工业物联网
马跃：男，1977年生，高级工程师，研究方向为电力通信

通讯作者:刘焕淋　 liuhl2@sina.com

中图分类号:TN929.11

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出版历程

收稿日期:2017-12-21
修回日期:2018-06-11
网络出版日期:2018-07-30
刊出日期:2018-10-01

Resources Balancing Algorithm Based on the Time-frequency Fragment Awareness for Virtual Optical Network Mapping

Huanlin LIU^1,,,
Hao HU¹,
Cuilian XIONG¹,
Yong CHEN²,
Min XIANG²,
Yue MA³
1. Key Laboratory of Optical Communications and Networks, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
2. School of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
3. Information & Telecommunication Company, State Grid Jibei Electric Power CLP, Beijing 100053, China
Funds:The National Natural Science Foundation of China (61275077), The Basic and Frontier Research Program of Chongqing (2015jcyjA40024), The National Electric Net Ltd. Technology Project


摘要
摘要:为了解决虚拟光网络映射中带宽阻塞率较高以及底层资源消耗不均匀问题，论文提出一种基于时间域-频谱域碎片感知的虚拟网络映射(FA-VNM)算法。该文综合考虑频隙在时间域和频谱域上的碎片问题，设计时频联合碎片公式最小化分配过程中的频谱碎片。进一步，为了均衡网络中的资源消耗，在FA-VNM算法基础上提出基于节点度数的负载均衡感知虚拟网络映射(LB-VNM)算法，设计物理节点平均资源承载能力的公式，优先映射物理节点平均资源承载能力大的节点；为了均衡路径上资源使用，考虑路径权重值，并根据每条路径的权重值对虚拟链路进行映射，从而降低阻塞率。仿真结果表明，所提算法能有效降低阻塞率，提高资源利用率。
关键词:弹性光网络/
网络虚拟化/
时频联合碎片感知/
负载均衡
Abstract:In order to address the problems of the high bandwidth blocking probability and imbalance resources consumption in physical network during virtual optical network mapping, Fragmentation-Aware based on time and spectrum domain of Virtual Network Mapping (FA-VNM) algorithm is proposed. In the FA-VNM algorithm, the fragments problem in the time domain and the spectrum domain is considered. Fragment formula jointly considering the time fragment and spectrum fragment is devised to minimize the spectrum fragments. Further, in order to balance the network resources consumption, based on the FA-VNM, Load Balancing based on degree of Virtual Network Mapping (LB-VNM) algorithm is proposed. In the stage of node mapping, physical node average resource carrying capacity is introduced and the physical node with larger average resources carrying capacity is mapped first. In order to balance the resource consumption in physical path, weight value of physical path is calculated in the stage of link mapping. Then, according to the weight value of each physical path, virtual links are mapped to achieve the purpose of load balancing for reduce the blocking rate. Simulation results show that the algorithms can effectively reduce the blocking rate and improve the resources utilization.
Key words:Elastic optical networks/
Network virtualization/
Time-spectrum fragmentation-aware/
Load balancing



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