Usage Media Scaling Technique to Transmit MPEG Data

概要

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As Multimedia applications such as video -on-demand and video conferencing become more common ,the classes of systems and networks participating these applications are becoming more diverse. A synchronous Transfer Mode (ATM) is expected to achieve dynamical allocation of bandwidth according to the needs of the service. A consequence of using ATM is that, during times of congestion. Packets will be delayed, and occasionally dropped. In such cases scaling mechanisms can be used to over come problems Rather than randomly dropping packet will be and by resource congestion, priority scheduling scheme may be used to alleviate the problem by delaying or dropping non -essential packets so that the over rall service performance is only minimally degraded. Hierarchical media encodings then can be used to archieve some from of stream scalability with in the network. This approach allows the transmitter to send a single, layered media stream at the highest level of quality. The single stream is filtered at the network bottle-necks or at lower capability receive end-systems. With the widespread acceptance of the MPEG coding standard, it is important that we understand the basic characteristics of MPEG encoded video data and its behavior in ATM based B-ISDN. We are now trying to implement the transmission of MPEG data by using media scaling technique on the testbed.
一般社団法人電子情報通信学会の論文
1996-03-11