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Journal Paper

Title

Smooth and Effcient Real-time Video Transport in Presence of Wireless Errors

Abstract

In this paper we study a smooth and e±cient transport protocol for real-time video over wire- less 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 °uctuations while maintaining friendliness to legacy protocols. VTP is also equipped with an Achieved Rate estima- tion scheme and a Loss Discrimination Algorithm, both end-to-end, to cope with random errors in wireless networks e±ciently. 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 con¯rmed by measurement results.

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Paper: PDF file of paper

Information & Date

ACM Transactions on Multimedia Computing, Communications and Applications (TOMCCAP), , May. 2006

Authors

GUANG YANG
LING-JYH CHEN
TONY SUN
Mario Gerla
M. Y. SANADIDI