Study On Key Technologies Of Cloud-based CDN For Live Streaming

With the rapid development of Internet, various kinds of application come up soon on it.The online video service occupy the bandwidth of the Internet. Due to the large amount ofdata streaming long duration of the transmission and network resources, demanding stringentfor data timing, network resources, delay, packet loss. Under the circumstance of networktoday, network bandwidth and content distribution with location are two problems that weshould widely face to. In this paper, we introduce a new scheme of streaming distributionbased on CDN combined cloud computing.CDN is short for content delivery distribution network. The object of building CDN isthat add a new layer in network architecture to push the content from origin server to the edgeof Internet closing to client. It can solve the crowd network and promote the quality of service.The abilities of CDN conclude that technically completely solve the problem about theconstricted bandwidth, large amount of page view and uneven distribution network.CDN is one of the core technology to solve the network traffic. Cloud-based CDN ownthese advantages, deployment flexibility, ease of management and others. Study of thetechnology can provide effective technical support for China Telecom’s future occupationCDN market. In this paper, we study on how to combine virtualization technology andexisting server, and then build a large-scale cloud computing platform combining CDN whichsupport the adaptive live streaming.Existing based the CDN streaming media platform in the transmission link is not a goodsolution to the backbone network bandwidth resources wasted. Give the user the mostappropriate video bitrate streaming service provided to the user in the edge node cannot bebased on the user network bandwidth, resulting in narrow-bandwidth users to browse thevideo is not smooth, and wide bandwidth users are not higher quality video. In this paper,Cloud CDN based on the principle of proximity and the flexible deployment of cloudcomputing platforms and other advantages to provide better video experience to users.