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  • Research Article
  • Open Access

Intelligent Stale-Frame Discards for Real-Time Video Streaming over Wireless Ad Hoc Networks

EURASIP Journal on Wireless Communications and Networking20092009:486165

https://doi.org/10.1155/2009/486165

  • Received: 28 November 2008
  • Accepted: 24 August 2009
  • Published:

Abstract

This paper presents intelligent early packet discards (I-EPD) for real-time video streaming over a multihop wireless ad hoc network. In a multihop wireless ad hoc network, the quality of transferring real-time video streams could be seriously degraded, since every intermediate node (IN) functionally like relay device does not possess large buffer and sufficient bandwidth. Even worse, a selected relay node could leave or power off unexpectedly, which breaks the route to destination. Thus, a stale video frame is useless even if it can reach destination after network traffic becomes smooth or failed route is reconfigured. In the proposed I-EPD, an IN can intelligently determine whether a buffered video packet should be early discarded. For the purpose of validation, we implement the I-EPD on Linux-based embedded systems. Via the comparisons of performance metrics (packet/frame discards ratios, PSNR, etc.), we demonstrate that video quality over a wireless ad hoc network can be substantially improved and unnecessary bandwidth wastage is greatly reduced.

Keywords

  • Relay Node
  • Intermediate Node
  • Network Traffic
  • Video Stream
  • Video Quality

Publisher note

To access the full article, please see PDF.

Authors’ Affiliations

(1)
Center for Wireless Multimedia Communications, Department of Electrical Engineering, National Sun Yat-Sen University, 80424 Kaohsiung, Taiwan

Copyright

© T.-L. Sheu and Y.-S. Chi. 2009

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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