Intelligent Stale-Frame Discards for Real-Time Video Streaming over Wireless Ad Hoc NetworksReport as inadecuate




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EURASIP Journal on Wireless Communications and Networking

, 2009:486165

First Online: 14 October 2009Received: 28 November 2008Revised: 24 June 2009Accepted: 24 August 2009

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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Author: Tsang-Ling Sheu - Yung-Shih Chi

Source: https://link.springer.com/







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