A new video transmission scheme called eMP (Client Multicast Patching) is proposed based on representative Multicast Patching {I J for proxy-based distributed VOD. When an appointed client plays a video, it is also acting as a server transmitting the partial video segments via multicast for latter requests in local network, therefore regional abundant network bandwidth is utilized instead of a remote server and backbone network bandwidth. The appointed client is not burdened with extra I/O bandwidth requirement and instantaneous service for client requests is provided. In addition, the eMP scheme is adaptive to video popularity. Our simulation study shows that significant network resource can be saved with the eMP scheme.
Partitioned broadcasting scheme is an efficient scheme for popular videos in video-on-demand system. In a partitioned broadcasting scheme, a video is divided into several segments and each segment is sent over one channel in cycles. In this papec we propose another partitioned broadcasting scheme for broadcasting popular videos, called Extended Exponential Broadcasting (EEB) scheme. We then analyze the resource requirements for EEB scheme, i.e., the number of server broadcast channels, the client storage space, and the client I10 bandwidth. Also, we found out a relationship between the client I s arrival time and its resource requirement. The results show that EEB scheme is compatible with conventional transmission at the user end, and it's easier to implement. Keyword Edeo-on-demand, Rdeo broadcasting, Channel allocation, Multimedia system, video distribution
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