High-resolution Video Transmission Network System Using Dynamic SDN
High-resolution Video Transmission Network System Using Dynamic SDN
复制标题
使用动态SDN的高分辨率视频传输网络系统
DOI：
10.1109/apcc.2015.7412535
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Tatsuya Fujii
中科院分区：
文献类型：
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作者：
Hiroyuki Kimiyama;Masahiko Kitamura;Mitsuru Maruyama;Tatsuya Fujii
最近，超过100 Gbit/s的超高速共享IP网络已经变得可用。它们提供的大带宽可以在各种用户之间共享，以通过共享IP网络上配置有软件定义网络（SDN）技术的虚拟化网络（VN）不仅传输数据，还传输高质量视频。在没有足够的带宽用于视频传输的情况下，也可以重新配置VN。然而，在这种情况下，视频传输将被中断，因为切片重新配置需要一定量的时间来再次配置所有交换机。为了解决这个问题，提出了一种“动态SDN”方法，该方法利用基于网络地址转换（NAT）的覆盖SDN技术。该方法通过使用OpenFlow（OF）交换机、OF控制器、高精度流量监视器和控制器节点（NAT管理器）从虚拟路径逐跳地创建VN，而不是基于切片的VN。在实验中，它被用来构建一个VN和视频点播系统在日本和美国之间的现有研究和教育网络。在实验过程中，1.6 Gbit/s的未压缩高清视频通过VN以真实的时间传输。实验结果表明，该方法能够使未压缩的高清视频通过VN传输，也使虚拟路径能够动态切换而不中断。
Recently, over 100 Gbit/s ultra-high-speed shared IP networks have become available. The large bandwidth they provide can be shared among various users to transmit not only data but also high-quality video through a virtualized network (VN) configured with software defined network (SDN) technology on the shared IP network. The VN can also be reconfigured in case there is not enough bandwidth for the video transmission. However, in this case, video transmission will be interrupted because slice reconfiguration requires a certain amount of time to configure all the switches again. To address this problem, a "Dynamic SDN" method is proposed that makes use of Network Address Translation (NAT) based overlay SDN technology. The method creates a VN from virtual paths hop-by-hop, instead of a slice based VN, by using OpenFlow (OF) switches, an OF controller, high-accuracy traffic monitors, and a controller node (NAT manager). In an experiment, it was used to construct a VN and a video on-demand system on existing research and education networks between Japan and the US. During the experiment, 1.6 Gbit/s uncompressed HD video was transferred in real time through the VN. The experiment results confirmed the method enabled uncompressed HD video to be transferred through the VN and also enabled a virtual path to be switched dynamically without interruption.