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

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.

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Correspondence to Tsang-Ling Sheu.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Sheu, TL., Chi, YS. Intelligent Stale-Frame Discards for Real-Time Video Streaming over Wireless Ad Hoc Networks. J Wireless Com Network 2009, 486165 (2009). https://doi.org/10.1155/2009/486165

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

Keywords

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