ETRI Journal

  • 제37권6호
  • /
  • Pages.1096-1107
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  • 2015
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  • 1225-6463(pISSN)
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  • 2233-7326(eISSN)
한국전자통신연구원 (Electronics and Telecommunications Research Institute)
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Dynamic Retry Adaptation Scheme to Improve Transmission of H.264 HD Video over 802.11 Peer-to-Peer Networks

  • Sinky, Mohammed (Computer Engineering Department, Umm Al-Qura University) ;
  • Lee, Ben (School of Electrical Engineering and Computer Science, Oregon State University) ;
  • Lee, Tae-Wook (LG Display Co. Ltd., LCD Laboratory) ;
  • Kim, Chang-Gone (LG Display Co. Ltd., LCD Laboratory) ;
  • Shin, Jong-Keun (LG Display Co. Ltd., LCD Laboratory)
  • 투고 : 2014.10.31
  • 심사 : 2015.07.30
  • 발행 : 2015.12.01
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초록

This paper presents a dynamic retry adaptation scheme for H.264 HD video, called DRAS.264, which dynamically adjusts the retry limits of frames at the medium access control (MAC) layer according to the impact those frames have on the streamed H.264 HD video. DRAS.264 is further improved with a bandwidth estimation technique, better prediction of packet delays, and expanded results covering multi-slice video. Our study is performed using the Open Evaluation Framework for Video Over Networks as a simulation environment for various congestion scenarios. Results show improvements in average peak signal-to-noise ratios of up to 4.45 dB for DRAS.264 in comparison to the default MAC layer operation. Furthermore, the ability of DRAS.264 to prioritize data of H.264 bitstreams reduces error propagation during video playback, leading to noticeable visual improvements.

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참고문헌

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