论文部分内容阅读
针对无线网络中可伸缩视频传输存在的问题,提出一种基于客户端下溢概率估计的传输算法.算法通过统计当前播放缓冲区容量的变化情况,计算出缓冲区下溢的概率,以此为根据选择合适的视频发送层数,从而在充分利用有效带宽的同时尽可能减少视频下溢频率.仿真结果表明,该算法能够保证在无线网络中视频传输具有较低的下溢概率和较高的视频质量.
Aiming at the existing problems of scalable video transmission in wireless networks, this paper proposes a transmission algorithm based on the estimation of client underflow probability.The algorithm calculates the probability of buffer underflow by counting the changes of the current play buffer capacity, which is According to the choice of the appropriate number of video transmission layer, so as to make full use of effective bandwidth while reducing the video underflow frequency as much as possible.The simulation results show that the algorithm can guarantee video transmission in wireless networks with lower underflow probability and higher Video quality.