摘要
针对无线局域网,提出了一种基于RTP/RTCP协议下MPEG-4标准的多路实时视频流的具体实现方案,提出了一种有效的基于时间戳的多路视频同步模型。针对无线QoS机制,系统应用了一种基于RTCP反馈友好码率控制算法TFRC的ECN算法,根据ECN标记包率来动态调整发送码率实现拥塞控制。实验表明该传输方案能获得较好的视频传输质量。
An implement ation scheme of MPEG-4 real-time multi-channel video streaming based on RTP/ RTCP over WLAN is put forward, and an effective multi-channel video synchronization model based on timestamp is proposed. For the wireless QoS mechanism, this system applies an ECN algorithm based on RTCP feedback rate control algorithm-TFRC. This ECN algorithm improves the TFRC algorithm, adjusts the sending rate dynamically according to ECN-marked packet probability to realize congestion control. Experiments show that this transmission method brings about high can obtain good video transmission quality.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2007年第9期1542-1545,共4页
Systems Engineering and Electronics
