移动网络中流媒体业务适配承载带宽的解决方案研究

摘要

The popularity of video sites, like YouTube, Youfcu and XunleiKankan which are based on streaming media technology announced the era of streaming media. However, since the mobile telecommunication network's transmission environment is uncertain, it cannot sustain consistently effective bandwidth and guarantee overall high performance of the streaming media service. Based on the standards of streaming media service, this piece of study aims to deliver a methodology that could inform the streaming media service platform with the mobile network wireless link real-time bandwidth based on mobile core network signaling protocol. Then streaming media platform can adjust the encoding rate of streaming media according to current bandwidth, in order to save net resources and improve users' experience.%YouTube、优酷、PPLive等一大批以流媒体为载体的视频网站的火爆,意味着流媒体时代的到来.然而,由于移动网络通信环境的不确定性,不能提供稳定的带宽,不能保障流媒体的业务质量.在研究流媒体业务特征、通信标准的基础上,提出一种基于移动核心网信令的,向流媒体业务平台告知移动网络无线链路实时带宽的方法.流媒体平台可根据当前带宽,及时地调整流媒体编码速率,以达到节约网络资源,改善用户业务感受的效果.