• 学报（中文） •

弹性光网络中基于光路维持时间感知的节能策略

1. 重庆邮电大学 通信与信息工程学院； 重庆高校市级光通信与网络重点实验室， 重庆 400065
• 通讯作者: 吕翊（1963-），男，重庆市人，教授， 主要研究方向为下一代光网络理论与技术.E-mail：luyi@cqupt.edu.cn.
• 基金资助:
国家自然科学基金资助项目（61401052），国家留学基金委面上项目（201608500030），重庆市教委科学技术研究项目（KJ1400418, KJ1500445），重庆邮电大学博士启动基金（A2015-09）

Energy Saving Strategy Based on Lightpath Holding Time Aware for Elastic Optical Network

Lü Yi,SHI Jin,YANG Yaya

1. School of Telecommunication and Information Engineering; Key Laboratory of Optical Communication and Network, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

Abstract: To effectively reduce the energy consumption for elastic optical network, an energy saving strategy based on software defined networking is proposed. The strategy is designed to reduce the huge switching power of lightpath termination and re-establishment. Firstly, the software defined networking technology and back propagation neural network model are used to predict the traffic situation of each lightpath in the network. Then, for the lightpath on which the traffic transmission has been completed and is about to be removed, a holding time is set according to the prediction result. Setting the holding time for the idle lightpath can avoid the re-establishment of the lightpath between the same source destination node pairs and eliminat the switching power consumption. The simulation results show that the proposed strategy can reduce the total energy consumption by 45% while maintaining a bandwidth blocking ratio at levels comparable to strategies which do not consider the switching power.