【摘要】 由于无线信道的时变特性和移动设备有限的能量资源,保证无线网络视频流传输的Qos是一项比较困难的任务。文章提出了一种基于无线网络的视频流自适应传输架构。这个架构不仅动态的估计了无线网络的状态进行自适应传输,而且同时执了差错控制和功率控制。通过分析网络的状态和视频流的特性来动态分配资源,提高了端到端的QoS。更多还原

【Abstract】 Video streaming over wireless network with Quality of Service(QoS)is a very difficult task due to the time-varying characteristics of wireless channel and limited battery resouse in the handheld devices.This paper proposes a network-adaptive architecture for video streaming over wireless network.The proposed architecture not only dynamically estimates the varying network status and transmits adaptively,but also simultaneously performs error control and power control.By dynamically allocating resources according to network status and media characteristics,it improves the end-to-end Quality of Services(QoS).更多还原