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Mitigating the Impact of Mobility on H.264 Real-Time Video Streams Using Multiple Paths

Journal of communications and networks v.6 no.4 , 2004년, pp.387 - 396  
Abstract

One of the main problems associated with MANETs is that mobility and the associated route discovery and maintenance procedures of reactive routing protocols cause severe interruptions on real-time video streams. Some of these interruptions are too large to be concealed using any sort of video technology, resulting in communications breaks unpleasant for the final end user. We present a solution for enhanced video transmission that increases route stability by using an improved route discovery process based on the DSR routing protocol, along with traffic splitting algorithms and a preventive route discovery mechanism. We also present some video adaptative mechanisms that improve the overall performance of multipath routing in terms of video data replication and video packet splitting strategies. Combining our proposals, we achieve up to 97% less interruptions on communication with high mobility and over 1.2 dB of improvements in terms of video distortion.

참고문헌 (12)

  1. Draft ITU-T Recommendation and Final Draft International Standard of Joint Video Specification (ITU-T Rec. H.264 ISO/IEC 14496-10 AVC), Mar. 2003 
  2. A. Nasipuri, R. Castaneda, and S. R. Das, 'Adaptive multipath source routing in ad hoc networks,' Performance of Multipath Routing for On-Demand Protocols in Mobile Ad Hoc Networks, pp. 339-349, 2001 
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  4. Z. Ye, S. V. Krishnamurthy, and S. K. Tripathi, 'A framework for reliable routing in mobile ad hoc networks,' in Proc. IEEE INFOCOM 2003, San Francisco, USA, Apr. 2003 
  5. C. T. Calafate and M. P. Malumbres, 'Testing the H.264 error resilience on wireless ad-hoc networks,' in Proc. 4-th EURASIP Conference focused on Video / Image Processing and Multimedia Communications, Zagreb, Croatia, July 2003 
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  7. M. Marina and S. Das, 'On demand multipath distance vector routing in ad hoc networks,' in Proc. IEEE ICNP 2001, 2001, pp. 14-23 
  8. L. Wang et al., 'Adaptive multipath source routing in ad hoc networks,' in Proc. ICC 2001, vol. 3, 2001, pp. 867-871 
  9. C. T. Calafate, M. P. Malumbres, and P. Manzoni, 'A flexible and tunable route discovery mechanism for on-demand protocols,' in Proc. 12-th Euromicro Conference on Parallel. Distributed and Network based Processing, La Coruna, Spain, Feb. 2004 
  10. J. Wu, 'An extended dynamic source routing scheme in ad hoc wireless networks,' in Proc. 35-th HICSS 2002, vol. 9, Big Island, Hawaii, Jan. 2002 
  11. K. Fall and K. Varadhan, 'Ns notes and documents,' in The VINT Project, UC Berkeley, LBL, USC/ISI, and Xerox PARC, Feb. 2000 
  12. D. B. Johnson, D. A. Maltz, and Y.-C. Hu, 'The dynamic source routing protocol,' in Internet Draft, MANET Working Group, draft-ietf-manet-dsr-10.txt, July 2004, work in progress 

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