摘要
提出了一种面向端对端的,基于双CDMA信道传输质量的动态视频传输控制策略。该策略包括:基于视频流编码特点的简单重传机制;基于分组丢失率的流量控制、视频质量动态调整及双信道轮转调度。模拟实验显示该策略能够提高基于双CDMA无线传输信道的实时视频流传输速率,并具有一定的稳定性。
An adaptive QoS mechanism for video transmission based on transmission quality of double CDMAlx network is presented. The mechanism includes four components. One is the simple retransnfission algorithm depending on video stream encoding which can improve the reliability of wireless channel. The second is the flow control technology based on packet loss ratio so as to increase the availability of wireless bandwidth during congestion preventing. The third is the video quality self - adjustment which can improve the real - time ability and continuity of video stream. The last one is a scheduling algorithm of wireless muhilink which improves the transmission quality and the reliability. Some simulation experiments show that the mechanism can increase the transmission rate of video stream, and enhance its stability.
出处
《微计算机应用》
2009年第12期27-33,共7页
Microcomputer Applications
基金
福建省自然科学基金项目(2008J0017)
福建省科技计划重点项目(2005H026)
福建省教育厅A类研究项目(No.JA06006)
关键词
视频传输
流量控制
视频质量调整
多链路调度
video transmission, flow control, video quality self-adjustment, muhilink scheduling
