面向流媒体业务的软件定义光网络负载均衡研究  

Research on load balancing of software-defined optical network for streaming media service

作　　者：姚娜 范红[1] 

机构地区：[1]南京邮电大学光电工程学院,南京210023

出　　处：《光通信技术》2017年第12期5-8,共4页Optical Communication Technology

基　　金：区域光纤通信网与新型光通信系统国家重点实验室开放基金(编号:2015GZKF03006)资助;江苏省光通信工程技术研究中心资助项目(No.ZSF0201)资助;江苏省科技计划项目(BY2016010-01)资助

摘　　要：针对目前视频业务对运营商网络带来的挑战,结合软件定义光网络(SDON)的管控分离策略和光网络资源虚拟化功能,在光网络控制层提出一种基于网络感知的链路负载均衡机制,并采用改进的最短路径算法为流媒体服务选择当前链路质量最优的路径进行数据转发,从而有效均衡网络负载流量,提升视频服务体验。Abstract： The arrival of the big video era has posed a greater challenge to the existing operator＇s internet. As a new type of network architecture, SDON provides a new way to solve this bottleneck. Combined with its centralized control and network virtualization, this paper presents a dynamic network-aware load balancing mechanism. The controller senses and monitors the current network states in real time, then according to the optimized shortest path algorithm, the mechanism can select the path of the best link quality in the current to forward data, thus effectively balance the network load and improve the video service experience. Key words： software defined optical network （SDON）; optical network virtualization; streaming media; load balancing; OpenFlow

关 键 词：软件定义光网络(SDON) 光网络虚拟化 流媒体 负载均衡 OPEN Flow 

分 类 号：TN929.11[电子电信—通信与信息系统]