透明IP over WDM网络中能效链路控制策略  

Energy-Efficiency Link Control Strategy for Transparent IP over WDM Networks

作　　者：陈勇[1] 籍慧琴[1] 刘焕淋[2] 

机构地区：[1]重庆邮电大学工业物联网与网络化控制教育部重点实验室,重庆400065 [2]重庆邮电大学光纤通信技术重点实验室,重庆400065

出　　处：《北京邮电大学学报》2015年第6期39-43,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(61275077);重庆市基础与前沿研究计划项目(cstc2015jcyj A40024)

摘　　要：在低负载时断开网络拓扑部分链路是IP over WDM光网络中一种有效的节能方法,但链路断开时段的选择对IP over WDM光网络的阻塞率和节能效果有较大的影响,对此,根据网络中IP流量一天中的周期性变化规律,设计了一种链路能效分时控制策略调整非峰值时间段网络拓扑连接关系,并建立整数线性规划能耗模型,设计了便于求解模型的启发式算法.仿真结果表明,与无链路断开的原始策略相比,所提策略能有效降低网络能耗;与现有的链路断开策略相比,新策略能获得更低的网络请求阻塞率.Development of networks is restricted by energy consumption. Shutting down part links is an effective energy-saving method for Internet protocol over wavelength division multiplexing（ IP over WDM）networks during the period of low traffic requests. Optimization of link-off period is of great influence on the blocking probability and energy-saving effection for IP over WDM networks. According to one-day change of IP traffic requests,an energy efficiency strategy of link time-interval control（ SLTIC） was proposed to change the connection state of network topology during off-peak hours. An integer linear programming（ ILP） optimization model was derived to optimize the network energy consumption. And a heuristic algorithm was designed to solve the model. Simulation shows that,compared with the original algorithm without link shut,the proposed strategy can decrease the energy consumption effectively. Meanwhile,compared with switch on / off multiple links（ SOFM）,the proposed SLTIC can achieve a lower request blocking probability.

关 键 词：波分复用网络 链路断开 分时控制 能耗 阻塞率 

分 类 号：TN929.11[电子电信—通信与信息系统]