矿井综合业务数字网络视频传输QoS研究  

Study on Video Transmission QoS of ISDN in Coal Mine

作　　者：程德强[1] 钱建生[1] 顾军[1] 盛文燕[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221008

出　　处：《电视技术》2004年第9期24-25,35,共3页Video Engineering

基　　金：国家科技型中小企业创新基金"矿井多媒体综合业务数字网";立项代码:02C26213200056

摘　　要：设计了一种基于图像抽帧算法的视频传输QoS控制系统。通过解析RTCP报文中的数据包丢失率,估计当前网络传输质量,发送端根据接收到的反馈信息,利用图像抽帧算法动态改变并重组视频编码序列,依据QoS策略调整发送重组序列,使其适应网络质量的变化,实现视频传输的QoS控制,从而达到网络质量变化情况下的最佳视频传输效果。A video transmission QoS control system based on the algorithm of frame extracting is put forward in this paper. The network transmission quality is estimated according to the data loss rate from RTCP messages. The sender receives feedback information from the network, and reconstructs video frames according to QoS scheme dynamically. Then, the video transmission bit rate is changed to meet the demand of the quality of network, which can achieve QoS control to get the best video transmission quality in dynamically changing network.

关 键 词：图像抽帧算法 综合业务数字网 视频传输 传输质量 矿井 服务质量 

分 类 号：TN915.14[电子电信—通信与信息系统]