Journal of Broadcast Engineering (방송공학회논문지)

The Korean Institute of Broadcast and Media Engineers (한국방송∙미디어공학회)
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CLO (Cross Layer Optimization) Technique for Multi-view Video Streaming Service over WiBro Network

WiBro망에서의 다시점 비디오 스트리밍 서비스를 위한 계층 간 최적화 방식

  • Son, Jung-Hyun (College of Electronics and Information, Kyung Hee University) ;
  • Cho, Ye-Jin (Mobile S/W Platform Lab. Telecommunication R&D Center Telecommunication Business SAMSUNG ELECTRONICS CO.,LTD) ;
  • Suh, Doug-Young (College of Electronics and Information, Kyung Hee University) ;
  • Park, Gwang-Hoon (College of Electronics and Information, Kyung Hee University) ;
  • Kim, Kyu-Heon (College of Electronics and Information, Kyung Hee University)
  • 손정현 (경희대학교 전자정보대학) ;
  • 조예진 (삼성전자 정보통신총괄 통신연구소 모바일 소프트웨어 플랫폼 랩) ;
  • 서덕영 (경희대학교 전자정보대학) ;
  • 박광훈 (경희대학교 전자정보대학) ;
  • 김규헌 (경희대학교 전자정보대학)
  • Published : 2008.09.30
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Abstract

This paper defines QoE (Quality of Experience) for multi-view video streaming service over WiBro and proposes the CLO (Cross-Layer Optimization) algorithm can maximize this. Proposal CLO algorithm contains from physical layer to video layer. Under the time-varying wireless channel condition, the CLO technique takes view-wise and the temporal priority of the multi-view video into consideration in order to decide the transmission of frames and its FEC level. At the handover situation, it is shown through computer simulation that the optimal quality of the multi-view video can be achieved using the minimum amount of resources if the proposed CLO technique is applied.

본 논문은 WiBro 망을 통한 다시점 비디오 서비스의 품질을 향상시키기 위하여, 수신자가 느끼는 다시점 비디오 품질을 위한 QoE (Quality of Experience)를 정의하고, 이를 최대화할 수 있는 계층 간 최적화 방식(Cross-Layer Optimization: CLO)을 제안한다. 제안하는 계층 간 최적화 방식(이하 CLO) 알고리즘은 물리계층에서 비디오계층까지 포함한다. 시간과 장소에 따라 변화하는 무선망 상황에서, 다시점 비디오의 시점별 중요도와 시간적 중요도를 구분하여, 프레임 전송 우선순위와 순방향 오류 정정(Forward Error Correction : FEC) 수준을 결정한다. 핸드오버 상황에서 제안하는 CLO 방식을 사용하였을 때 최소의 자원으로 최고대의 QoE를 달성할 수 있음을 시뮬레이션을 통하여 보여준다.

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References

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