Proceedings of the Korean Society of Broadcast Engineers Conference (한국방송∙미디어공학회:학술대회논문집)
- 2009.01a
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- Pages.668-672
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- 2009
IMPLEMENTATION EXPERIMENT OF VTP BASED ADAPTIVE VIDEO BIT-RATE CONTROL OVER WIRELESS AD-HOC NETWORK
- Ujikawa, Hirotaka (Dept. of Computer Science, Graduate School of Fundamental Science and Engineering, Waseda University) ;
- Katto, Jiro (Dept. of Computer Science, Graduate School of Fundamental Science and Engineering, Waseda University)
- Published : 2009.01.12
Abstract
In wireless ad-hoc network, knowing the available bandwidth of the time varying channel is imperative for live video streaming applications. This is because the available bandwidth is varying all the time and strictly limited against the large data size of video streaming. Additionally, adapting the encoding rate to the suitable bit-rate for the network, where an overlarge encoding rate induces congestion loss and playback delay, decreases the loss and delay. While some effective rate controlling methods have been proposed and simulated well like VTP (Video Transport Protocol) [1], implementing to cooperate with the encoder and tuning the parameters are still challenging works. In this paper, we show our result of the implementation experiment of VTP based encoding rate controlling method and then introduce some techniques of our parameter tuning for a video streaming application over wireless environment.
Keywords
- wireless ad-hoc network;
- video transmission;
- adaptive rate control;
- implementation experiment;
- TFRC (TCP Friendly Rate Control) [2];
- VTP