基于OpenFlow的互联网视频组播转单播SDN研究  

Research on Multicast-to-unicast SDN of Internet Video Based on OpenFlow

作　　者：王丽娜[1] 侯健敏[2] 郑良立 刘炎 周天皓 周浩然 WANG Lina;HOU Jianmin;ZHENG Liangli;LIU Yan;ZHOU Tianhao;ZHOU Haoran(School of Electronic and Information Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,China;School of Automation,Nanjing University of Information Science and Technology,Nanjing 210044,China;Oriental Pearl Group Co.,Ltd.,Shanghai 200233,China)

机构地区：[1]南京信息工程大学电子与信息工程学院,南京210044 [2]南京信息工程大学自动化学院,南京210044 [3]东方明珠新媒体集团有限公司,上海200233

出　　处：《实验室研究与探索》2019年第7期119-123,共5页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(71503136);江苏高校品牌专业建设工程资助项目(PPZY2015B134);中国气象局气象软科学自主申报项目(2018[27]);南京信息工程大学大学生实践创新训练计划项目(201710300177)

摘　　要：随着互联网的普及,基于IP网络的OTT视频业务发展迅速。IP视频传输技术有两大类,即通过组播传输和通过单播传输。运用软件定义网络(SDN)将组播视频流转换为单播视频流,并通过虚拟交换机OVS进行了模拟。使用ovs-ofctl命令通过OpenFlow协议去连接OVS,创建、显示OVS中的流表,并给出了组播转单播的分析。转换后的单播网络视频流在客户端正常播放,表明基于OpenFlow的互联网视频组播转单播命令配置正确,验证了方案的有效性。As the Internet popularizes,IP network-based over-the-top video service has been taking strides.In terms of data transmission,there are two types of IP-based video communication technology,i.e.,multicast and unicast.Soft defined network is applied to realize multicast-to-unicast conversion video stream,and a procedure is simulated via Open vSwitch.With the procedure,the command of ovs-ofctl is used to connect Open vSwitch based on OpenFlow protocol,then the Flow Table items are created and displayed on Open vSwitch.multicast-to-unicast conversion is analyzed.The converted unicast network video achieves smooth streaming on the client side.It shows the command of OpenFlow–based multicast-to-unicast conversion is configured correctly.Hence,the validity of this scheme is verified.

关 键 词：软件定义网络 OpenFlow 组播转单播 OPEN vSwitch 互联网视频 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]