Performance of H.264 Compressed Video Streams over 802.11b Based MANETs

  • Authors:
  • Carlos T. Calafate;M. P. Malumbres;P. Manzoni

  • Affiliations:
  • -;-;-

  • Venue:
  • ICDCSW '04 Proceedings of the 24th International Conference on Distributed Computing Systems Workshops - W7: EC (ICDCSW'04) - Volume 7
  • Year:
  • 2004

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Abstract

This paper addresses the problem of video streamstransmission in 802.11b based Mobile Ad-hoc Networks(MANETs). Through the study of the delivery ofa live encoded video stream, we expose the characteristicsof different routing protocols and the infeasibilityto provide QoS. The analysis shows the impact of aMANET on H.264 real-time video flows in terms of packetloss, end-to-end delay, jitter and distortion, and the behaviorof H.264 error resilience tools in order to determinetheir effectiveness on such network scenarios. The resultsshow that video traffic has demands that are hard to bemet by a standard MANET, and that improvements are requiredin terms of routing protocols and QoS provisioningeither on the MAC layer or at IP level using traffic shapingtools. Also, most of H.264 error resilience tools arenot so effective as expected with this kind of networks, beingthe random macroblock updating the most effective onewe have tested.