一种基于SDN交换设备的视频点播分发系统

A Video on Demand Distribution System Based on SDN Switching Equipment

通信技术和广播电视技术的快速发展对有线电视网络质量、承载能力提出了更高的要求,传统有线电视已无法满足4K高清或VR等视频IP广播。针对一些现有解决方案中存在的弊端,提出一种基于SDN交换设备的视频点播分发系统,利用终端设备的识别机制,结合了SDN交换设备特有的流表转发规则,在终端上实现了定向的点播和推流控制,可用于提升双向互动点播等业务下行带宽,具备较强的稳定性和灵活性,可大大减少运营商的建设和维护成本,满足用户及网络的需求。

The rapid development of communication technology and broadcast TV technology puts higher requirements on the quality and carrying capacity of cable TV networks. Traditional cable TVs cannot meet the video IP broadcasts such as 4K HD or VR. Aiming at the shortcomings of some existing solutions, this paper proposes a video-on-demand distribution system based on SDN switching equipment. It uses the identification mechanism of the terminal equipment and combines the flow table forwarding rules unique to the SDN switching equipment to realize the orientation of the on-demand and push-flow control on the terminal. This system can be used to improve the downlink bandwidth of two-way interactive on-demand services, with strong stability and flexibility, which can greatly reduce the construction and maintenance costs of operators and meet the needs of users and networks.