基于QoE感知的无线视频传输节能技术研究

针对未来无线网络中用户体验(quality of experience,QoE)感知的节能技术这一范畴,对视频业务QoE感知技术和降低网络能耗方面进行了研究,在此基础上构建了能耗目标函数和相应的约束条件,理论上分别推导出视频帧的丢帧率模型和视频帧的传输能耗模型.保障视频业务的QoE约束条件下,求出一系列符合条件的传输参数,使用迭代优化算法求出最优传输参数并计算了相应的最低消耗.对所提方法的性能进行了仿真,主要分析了视频业务质量、视频帧的重传数量以及视频帧的大小对传输能耗的影响.仿真结果表明,针对视频业务质量要求高、视频数据量大这一特点,所提出的方法能够有效降低未来无线网络的传输能耗并保障了视频业务的质量.

Energy saving technology of wireless video transmission based on QoE perception

This thesis firstly researches the QoE evaluation of video service and energy consumption reduction in the process of video transmission. Secondly it derives the frame loss rate model of video frames and the transmission energy consumption model of video frames in the theory. Finally, the performance of the proposed method is applied to the simulation, the main analysis of the impact of the video service quality, the number of retransmission of video frames and the effect of video frame size on the transmission energy consumption. The simulation results show that the method proposed in this paper proposed can effectively reduce the transmission energy consumption in the future wireless network and guarantee the quality of video service.