Error and Congestion Resilient Video Streaming over Broadband Wireless

Error and Congestion Resilient Video Streaming over Broadband Wireless

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In this paper, error resilience is achieved by adaptive, application-layer rateless channel coding, which is used to protect read more H.264/Advanced Video Coding (AVC) codec data-partitioned videos.A packetization strategy is an effective tool to control error rates and, in the paper, source-coded data partitioning serves to allocate smaller packets to more important compressed video data.The scheme for doing this is applied to real-time streaming across a broadband wireless link.

The advantages of rateless code rate adaptivity are then demonstrated in the paper.Because the data partitions of a video slice are each assigned to different network packets, in congestion-prone wireless networks the increased number of packets per slice and their size disparity may increase the packet loss rate from buffer overflows.As a form of congestion resilience, this paper recommends packet-size dependent scheduling as a relatively simple way of alleviating the buffer-overflow problem arising from data-partitioned packets.The paper also contributes an analysis of data partitioning and packet sizes as a prelude to considering scheduling regimes.

The combination of adaptive channel coding and prioritized packetization for error resilience with packet-size dependent beer button down shirts for men packet scheduling results in a robust streaming scheme specialized for broadband wireless and real-time streaming applications such as video conferencing, video telephony, and telemedicine.