| Summary: | 碩士 === 國立雲林科技大學 === 電子與資訊工程研究所碩士班 === 92 === The success of the Internet and the use of broadband in home have caused a gradual shift in traffic on the Internet from data to multimedia communication. This work investigates the effects of timing drift problem in server side of Movie of Demand (MoD) system with streaming technology.
A stream buffering technique is used and an adaptive rate control mechanism is applied in combination with a client feedback packet to prevent stream buffer overflow or underflow on the client side, and thereby accommodate the network delay, jitter, and timing deviation between the server machine and the client host. According to the property of variable bit rate video traffics, we propose a packet aggregated technique which can aggregate the data of different video frames into same data packet. The simulation results reveal that the developed adaptive rate control mechanism with packet aggregated algorithm can not only prevent stream buffer overflow or underflow but also reduce about 22% of data packets during in one and half hours movie play time.
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