Adaptive audio-video streaming solution over IP mobile environments

Audio and video streaming over the Internet is becoming very attractive and popular. Thus, there is a need to provide efficient delivery of such applications to the growing number of demanding users. In addition, new types of devices, transportable and mobile are emerging rapidly. Now, common users are expecting to access their favorite Internet services anywhere, and through any equipment (laptop, PDA, ...). This paper combines those two requests by proposing an efficient adaptive solution to mobile users willing to receive audio-video streaming services. Our solution is focused on MPEG-4 coded streams, the use of audio-visual objects (AVOs) and the partitioning into different sets of layers. According to the changes of networks experienced by the mobile user, a classification followed by an adaptation process is performed to the video stream. AVOs are added or dropped according to the newly accessed network constraints and following a TCP-friendly rate control algorithm