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.
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© 2012 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering
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Ali, I., Moiron, S., Fleury, M., Ghanbari, M. (2012). Congestion Resiliency of Data Partitioned H.264/AVC Video over Wireless Networks. In: Rodriguez, J., Tafazolli, R., Verikoukis, C. (eds) Mobile Multimedia Communications. MobiMedia 2010. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 77. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35155-6_1
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DOI: https://doi.org/10.1007/978-3-642-35155-6_1
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