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Emergency Video Multi-Path Transfer over Ad Hoc Wireless Networks

N. N. Qadri 1, M. Fleury 1, M. Altaf 1, and M. Ghanbari 3
University of Essex, School of CSEE, Colchester CO4 3SQ, United Kingdom

Abstract—Ad Hoc networks utilize multi-hop radio relay without the need for a base station, supporting mobility and allowing them to be quickly deployed in an emergency. Real-time video communication across an ad hoc network allows helpers to better understand the nature of the problem within a disaster area but the lack of centralized routing and network resource management is challenging, particularly if the wireless nodes have limited processing power. Multi-path solutions have been proposed for video transfer. This paper investigates two practical schemes, Video Redundancy Coding and a proposal of the paper,
H.264 codec redundant frames. The paper reports that redundant frames when used in combination with multi-path do result in as much as 10 dB improvement in delivered video quality, making the difference between
acceptable and unacceptable visual communication in a disaster scenario.
Index Terms—ad hoc wireless, multi-path, video streaming, Video Redundancy Coding, redundant frames

Cite:N. N. Qadri, M. Fleury, M. Altaf and M. Ghanbari, "Emergency Video Multi-Path Transfer over Ad Hoc Wireless Networks," Journal of Communications, vol. 4, no.5, pp.329-338, 2009.