Mobile Multimedia Communications. 6th International ICST Conference, MOBIMEDIA 2010, Lisbon, Portugal, September 6-8, 2010. Revised Selected Papers

Research Article

Congestion Resiliency of Data Partitioned H.264/AVC Video over Wireless Networks

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  • @INPROCEEDINGS{10.1007/978-3-642-35155-6_1,
        author={Ismail Ali and Sandro Moiron and Martin Fleury and Mohammed Ghanbari},
        title={Congestion Resiliency of Data Partitioned H.264/AVC Video over Wireless Networks},
        proceedings={Mobile Multimedia Communications. 6th International ICST Conference, MOBIMEDIA 2010, Lisbon, Portugal, September 6-8, 2010. Revised Selected Papers},
        proceedings_a={MOBIMEDIA},
        year={2012},
        month={12},
        keywords={data-partitioning H.264/AVC IEEE 802.11e intra-refresh macroblocks},
        doi={10.1007/978-3-642-35155-6_1}
    }
    
  • Ismail Ali
    Sandro Moiron
    Martin Fleury
    Mohammed Ghanbari
    Year: 2012
    Congestion Resiliency of Data Partitioned H.264/AVC Video over Wireless Networks
    MOBIMEDIA
    Springer
    DOI: 10.1007/978-3-642-35155-6_1
Ismail Ali1,*, Sandro Moiron,*, Martin Fleury1,*, Mohammed Ghanbari1,*
  • 1: University of Essex
*Contact email: iaali@essex.ac.uk, smoiro@essex.ac.uk, fleum@essex.ac.uk, ghan@essex.ac.uk

Abstract

Data partitioning is an error resiliency technique that enables unequal error protection for transmission of video over lossy channels. Including a per-frame cyclic intra-refresh macroblock (MB) line guards against temporal error propagation. This paper considers the impact of this form of error resilience on access control and proposes a scheme based on selective dropping of packets belonging to the data partition bearing intra-coded MBs. The paper shows that by this scheme, when congestion occurs, it is possible to gain up to 2 dB in video quality over assigning a stream to a single IEEE 802.11e access category. The scheme is shown to be consistently advantageous over other ways of assigning the partitioned data packets to different access categories. This counter-intuitive scheme for access control purposes reverses the priority usually given to partition B data packets over partition C data packets.