基于SDN的QoS管理机制研究  

Study on the QoS management mechanism based on SDN

作　　者：张靖 舒圣涛 刘翠玲 俞骏豪 李挺 

机构地区：[1]国网安徽省电力公司信息通信分公司,安徽合肥230000

出　　处：《无线互联科技》2017年第24期125-127,共3页Wireless Internet Technology

摘　　要：随着互联网的发展,媒体流的数目逐渐增多。由于受到传统网络架构的限制,已经很难对这些流进行灵活控制与管理。SDN的出现为解决此问题提供了新的思路。文章提出了一个基于SDN的QoS管理方案,使用阻塞队列对不满足传输条件的流进行管理。当有流到达时,首先判断是否有满足流约束条件的路径。如果拥有,控制器下发流表进行流的传输;如果没有,控制器将流加入阻塞队列。当有流完成传输时,控制器及时调度阻塞队列中的流。文章对方案进行了优化,为QoS流选择路径时增加了时延抖动参数,能够排除一些时延不稳定的路径,及时对流进行调度,增加了链路资源的利用率。With the development of the Internet, the number of media streams is increasing. Due to the limitations of traditional network architectures, it is difficult to control and manage these popular agility. The emergence of SDN provides a new way to solve this problem. In this paper, a SDN based QoS management scheme is proposed that uses congestion queues to manage flows that do not meet transmission conditions. When a stream arrives, first determine whether there is a path that satisfies the flow constraint. If owned, the controller sends the flow to the flow table. If not, the controller adds the flow to the blocking queue. When a stream completes the transmission, the controller can schedule the flow in the blocking queue in a timely manner. In this paper, the scheme is optimized, and the delay jitter parameter is added to the QoS flow selection path, and some delay unstable paths can be eliminated. And scheduling in time, increasing the utilization of link resources.

关 键 词：SDN QOS 网络 优化 

分 类 号：TP393.07[自动化与计算机技术—计算机应用技术]