Video Transmission Over Varying Bandwidth Links
Laxmikant R. Patil · 2006
Internet today is a best-effort network, with time-varying bandwith characteristics. A system for multicasting video over the Internet has to deal with heterogeneity of the receiver’s capability and/or requirements. So adaptive mechanisms are necessary. Conventionally multi-layered transmission of data is preferred to solve the problem of varying bandwidth in multimedia multicast application. In todays scenario majority of the flows are highly bandwidth consuming and are bursty in nature. Consequently we observe sudden changes in available bandwidth, leading to lot of variations in received video quality. Here our aim is to minimize these variations in video quality. In this thesis we propose traffic pattern based adaptive multimedia multicast (TPAMM) scheme.In this scheme, link bandwidth values are available for prediction window length. Bandwidth prediction model is refined periodically using feedback from receiver. TPAMM scheme also maximizes the minimum quality video playout.