TCP-based real-time video transmission delay prediction model
Weijia Jia · Jisuanji yingyong yanjiu · 2010
Aimed to larger end-to-end delays and jitters and worse playing quality posed by the TCP retransmission for the multimedia streaming transmitting via Internet using TCP, this paper proposed the necessary conditions to overcome effect on video playing quality caused by TCP retransmission, such as the formula describing the relationship between video frame sending-delays, play out buffer delays and round trip time (RTT). It presented a prediction model to predict the video frame sending-delays with input parameters as video frame lengths, network loss ratio, RTT, TCP congestion window size, and TCP retransmission timeout (RTO). Experiments using NS2 simulator show that the prediction value of video frame sending-delays can be used to determine whether it is feasible for a video frame to be transsmitted using TCP protocol.