A New Hybrid Broadcasting Scheme with Low Buffer Requirement for Users with Limited Bandwidth

陳育威(Yu-Wei Chen) ； 陳世賢(Shin-Shung Chen)

《臺北科技大學學報》 44卷2期 (2012/02) Pp. 28-37

https://doi.org/10.29768/JNTUT.201202.0003

摘要

針對熱門的影片，廣播方法是一種能有效利用頻寬的方法。藉由混合Fibonacci與interleaving staircase兩方法，本論文提出一個稱為FIS的混合方法，運用於傳送CBR-encoded的影片。此FIS方法可提供服務給頻寬只有兩倍影片消耗率的用戶，使得該用戶接收觀賞影片並不會中斷。用戶端暫存空間需求只需約略整部影片檔案大小20%的暫存空間。相較先前的Fibonacci與FS方法，FIS方法分別可以比它們省下50%與27%的暫存空間需求，另外在最大的等待時間上也是非常接近Fibonacci與FS方法所需的等待時間。

關鍵字

週期性廣播 ； 多媒體傳輸 ； 隨選視訊 ； 暫存空間需求

並列摘要

The broadcast method is an efficient approach to deliver a hot video for utilizing bandwidth. By combining the Fibonacci and interleaving staircase methods, this paper presents a new hybrid broadcasting method, called FIS method, to deliver a CBR-encoded video. The FIS method provides that users only use a bandwidth of double of the consumption rate to download and watch a CBR-encoded video without break. The buffer requirement of the proposed method is near 20% of the size of whole video. Compared with the Fibonacci and FS methods, the FIS method reduces the buffer requirement by about 50% and 27%, respectively, while maintains very close maximum wait time.

並列關鍵字

periodic broadcasting ； multimedia communication ； video-on-demand ； buffer requirement