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Smooth and efficient real-time video transport in the presence of wireless errors
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Source ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP) archive
Volume 2 ,  Issue 2  (May 2006) table of contents
Pages: 109 - 126  
Year of Publication: 2006
ISSN:1551-6857
Authors
Guang Yang  University of California, Los Angeles, Los Angeles, CA
Tony Sun  University of California, Los Angeles, Los Angeles, CA
Mario Gerla  University of California, Los Angeles, Los Angeles, CA
M. Y. Sanadidi  University of California, Los Angeles, Los Angeles, CA
Ling-Jyh Chen  Academia Sinica, Taipei, Taiwan
Publisher
ACM  New York, NY, USA
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ABSTRACT

In this article we study a smooth and efficient transport protocol for real-time video over wireless networks. The proposed scheme, named the video transport protocol (VTP), has a new and unique end-to-end rate control mechanism that aims to avoid drastic rate fluctuations while maintaining friendliness to legacy protocols. VTP is also equipped with an achieved rate estimation scheme and a loss discrimination algorithm, both end-to-end, to cope with random errors in wireless networks efficiently. We show by analysis that VTP preserves most of the convergence properties of AIMD and converges to its fair share fast. VTP is compared to two recent TCP friendly rate control (TFRC) extensions, namely TFRC Wireless and MULTFRC, in wired-cum-wireless scenarios in Ns-2. Results show that VTP excels in all tested scenarios in terms of smoothness, fairness, and opportunistic friendliness. VTP is also implemented to work with a video camera and an H.263 video codec as part of our hybrid testbed, where its good performance as a transport layer protocol is confirmed by measurement results.


REFERENCES

Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

 
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Collaborative Colleagues:
Guang Yang: colleagues
Tony Sun: colleagues
Mario Gerla: colleagues
M. Y. Sanadidi: colleagues
Ling-Jyh Chen: colleagues