Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Transmission of Multimedia Traffic over Mobile Ad-hoc Networks

모바일 ad-hoc 네트워크에서 멀티미디어 트래픽 전송

  • 김영동 (동양대학교 정보통신공학부)
  • Published : 2005.02.01
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Abstract

In this paper, some performance characteristics of multimedia traffic for mobile ad-hoc networks is studied with simulations. Synthetic streaming video is considered as the multimedia traffic for MPEG-coded video in the simulation. The synthetic video stream is generated with a video stream generation algorithm. The algorithm generate VBR traffics for MPEG video streams with special predefined GOP(group of pictures) patterns that is consisted of a sequence of I(intra-coded), P(predicted-coded) and B(bidirectional-coded) frames. The synthetic VBR streams is transmitted through UDP protocol with on-demand mobile ad-hoc network routing protocols like as AODV and DSR. And performances for video streams through mobile ad-hoc networks is evaluated, the throughputs is compared between data and video traffics.

본 논문에서는 모바일 에드혹 네트워크에서 멀티미디어 트래픽의 전송특성을 시뮬레이션으로 연구하였다. 시뮬레이션에서는 멀티미디어 트래픽으로 MPEG 비디오 형식의 합성 스트리밍 비디오를 사용하였으며, 합성 스트리밍 비디오는 비디오 스티림 알고리즘을 사용하여 생성하였다. 비디오 합성 알고리즘은 I(intra-coded), P(predicted-coded), B(bidirectional-coded) 프레임 열로 구성되는 특정 GOP(group of pictures) 패턴을 사용하여 MPEG 비디오 스트림에 대응하는 VBR 트래픽을 생성한다. 이 합성 VBR 스트림을 모바일 애드혹 네트워크 상에서 UDP 프로토콜을 사용하여 전송하였으며, 라우팅 프로토콜로는 AODV와 DSR을 사용하였다. 모바일 에드혹 네트워크의 비디오 스트림 전송성능으로서 패킷지연, 패킷전달율 및 수율을 분석하였으며, 데이터 트래픽과 비디오 트래픽의 전송수율을 비교하여 보았다.

Keywords

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