한국방송∙미디어공학회:학술대회논문집 (Proceedings of the Korean Society of Broadcast Engineers Conference)
- 한국방송공학회 2008년도 추계학술대회
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- Pages.189-192
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- 2008
계층화 비디오 브로드캐스팅을 위한 QoS 적응변환방법
Scalable Video Broadcasting with QoS Adaptation
- Thang, Truong Cong (Electronics and Telecommunications Research Institute) ;
- Kang, Jung-Won (Electronics and Telecommunications Research Institute) ;
- Lee, Kyung-Jun (Electronics and Telecommunications Research Institute) ;
- Yoo, Jeong-Ju (Electronics and Telecommunications Research Institute) ;
- Lim, Jong-Soo (Electronics and Telecommunications Research Institute)
- 발행 : 2008.11.08
초록
Modern broadcasting/multicasting networks has the heterogeneous nature in terms of terminals and available bandwidth. Such heterogeneity could be coped by scalable video coding (SVC) standard developed recently. More specifically, spatial layers of an SVC bitstream can be consumed by different terminals and SNR (and temporal) scalability can be used to cope with bandwidth heterogeneity. In this work, we tackle the problem of SVC adaptation for different user groups receiving the same broadcast/multicast video, so as to provide a flexible tradeoff between the groups while also maximizing the overall quality of the users. The adaptation process to truncate an SVC bitstream is first formulated as an optimization problem. Then the problem is represented by MPEG-21 DIA description tools, which can be solved by a universal processing. The results show that MPEG-21 DIA is useful to enable automatic and interoperable adaptation in our scenario.
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