Abstract

TCP seems helpless, facing fast-growing high bit-rate Internet applications like streaming media. But UDP, the alternative choice, lacks congestion control and does not guarantee packets arrival. We study the UDP transmission situation by experiments, and build the mathematic and physical models. Then we propose minimum rate distortion based scheduling for streaming media. Considering the structure of the single nested streaming and the packet lost rate curve of the UDP transmission, we estimate the minimum rate distortion to determine the max retransmission of a packet and the max traffic within a GOP which can be sent through the Internet, finally we gain good transmission performance, but without UDP's natural behavior of sacking the bandwidth unfairly.

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