서지주요정보
가변대역폭 전송영상의 온라인 대역폭 평탄화 = Online bandwidth smoothing of variable-bit-rate streaming video
서명 / 저자 가변대역폭 전송영상의 온라인 대역폭 평탄화 = Online bandwidth smoothing of variable-bit-rate streaming video / 손정현.
발행사항 [대전 : 한국과학기술원, 1999].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8010281

소장위치/청구기호

학술문화관(문화관) 보존서고

MCS 99049

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

등록번호

9006241

소장위치/청구기호

서울 학위논문 서가

MCS 99049 c. 2

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

리뷰정보

초록정보

Variable-bit-rate(VBR) compressed video can exhibit significant multiple-time-scale bitrate variability, that is why the transmission of compressed video has many complex problems. Bandwidth smoothing techniques can reduce this burstness by prefetching data into the client playback buffer at a series of fixed rates, simplifying the allocation of resources in video servers and the communication network. In contrast to stored video, live video applications typically have limited knowledge of frame sizes and often require deadlines on the delay between the source and the clients. In this paper we propose a online bandwidth smoothing algorithm for a growing number of streaming video applications such as newscasts, sportscasts and distance learning, where many clients may be willing to tolarate a playback delay of a few seconds in exchange for a smaller bandwidth requirement. Extending techniques for smoothing stored video, we developed online, window-based smoothing algorithm. This algorithm fully utilizes client buffer by keeping previous transmission rate as long as possible at the overlaying parts between smoothing windows, and using min-max strategy, its number of transmission rate change is kept very small. Simulation with actual MPEG-1 frame traces is employed to evaluate performance of the proposed algorithm. The simulation results show that peak transmission rate and number of transmission rate are significantly reduced, closely approximating the performance of the optimal offline algorithm with relatively small window size(2 - 10 sec), and the algorithm performs better with increase of the client buffer size.

서지기타정보

서지기타정보
청구기호 {MCS 99049
형태사항 [iv], 43 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jong-Hyon Sohn
지도교수의 한글표기 : 윤현수
지도교수의 영문표기 : Hyun-Soo Yoon
학위논문 학위논문(석사) - 한국과학기술원 : 전산학과,
서지주기 참고문헌 : p. 42-43
주제 대역폭 평탄화
압축된 영상
온라인
전송
Bandwidth smoothing
Compressed video
Online
Streaming
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