네트워크 적응적 QoS를 위한 오토노믹 멀티미디어 트랜스코딩 시스템의 설계 및 구현

서동만, 정인범 : 네트워크 적응적 QoS를 위한 오토노믹 멀티미디어 트랜스코딩 시스템의 설계 및 구현 , 산업기술연구(강원대학교 산업기술연구소 논문집), 제27권 A호, 131~139페이지, 2007년.

 

네트워크 적응적 QoS를 위한 오토노믹 멀티미디어 트랜스코딩 시스템의 설계 및 구현 Design and Implementation of Autonomic Multimedia Transcoding System for Network Adaptive QoS 서  동  만*       정  인  범** Seo, Donh-Mahn   Jung, In-Bum
	Abstract The recent advance in wireless network technologies has enabled the streaming media service on the mobile devices such as PDAs and cellular phones. Since the wireless network has low bandwidth channels and mobile devices are actually composed of limited hardware specifications, the transcoding technology is needed to adapt streaming media to given mobile devices. Futhermore owing to the diversity of bandwidth in the wireless network by reason of mobile users' movements and environments, it is difficult to provide stable QoS. In this paper, the autonomic multimedia transcoding system is proposed in order for users to provide network adaptive QoS. Our proposed system is based on the estimation of available bandwidth in wireless network for seamless multimedia streaming service. The proposed system is designed and implemented for various mobile clients. In experiments, we evaluate its seamless multimedia streaming and the adaptation transcoding bit rate according to the changes of bandwidth in wireless network. 키워드 : 트랜스코딩, QoS, 이동 단말, 무선 네트워크, 가용 대역폭 Keywords : transcoding, QoS, mobile client, wireless network, available bandwidth