基于电量状态的移动流媒体码率自适应策略

为提升移动流媒体的用户体验质量(quality of experience,QoE)和设备续航时长,提出一种基于移动设备电量状态的Qo E模型,模型的参数包括初始延迟、重新缓冲、平均视频质量、码率切换平滑度以及设备电量状态.在模型的基础上,给出一种基于网络吞吐量,同时又考虑设备电量状态的码率自适应策略.策略能避免客户端...

Bitrate adaptive strategy of mobile streaming media based on battery state

To improve the quality of experience(QoE)and the device battery life of mobile streaming media,a QoE model based on the battery state of the mobile device was proposed.The parameters of the model included initial delay,re-buffering events,average video quality,smoothness of bitrate switching,and device battery status.On the basis of the model,a bitrate adaptation strategy based on network throughput while considering the battery status of the device was given.The strategy avoided the client from requesting a high bitrate video when the remaining battery of the device was in a medium or low state,causing excessive battery consumption.Experimental results show that the proposed strategy can effectively balance the user’s needs for video quality and device battery life under different battery states.