随着宽带网络的发展,通过网络收看视频节目越来越受到用户的欢迎,面对这个逐渐成长的市场空间,电信运营商、广电运营商、内容提供商都希望分得“一杯羹”。如何在降低网络改造成本的前提下通过现有网络提供高质量的流媒体服务,是运营商首先要考虑的问题。 With the development of broadband networks, watching video programs over the Internet is increasingly welcomed by users. In the face of this growing market space, telecom operators, radio and television operators, and content providers all want to share a “slice.” How to provide high-quality streaming media service through the existing network on the premise of reducing the cost of network transformation is an issue that operators should first consider.