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CONGESTION-OPTIMIZED ROUTING AND SCHEDULING OF VIDEO OVER WIRELESS AD HOC NETWORKS

We propose a dynamic scheduling and traffic partitioning scheme for a video source communicating over a mobile ad hoc wireless network. This cross-layer design approach operates at both the network layer and the application layer. It indicates along which route(s) the sender should operate in order to obtain the highest allowable rate while limiting self-congestion. In addition, the congestion-distortion optimized scheduling takes fully advantage of this rate allocation to select and transmit the packets of the video stream which will maximize video quality. Experiments performed over a simulated network, with H.264 encoded video, show performance gains for the proposed technique.