查詢結果分析
相關文獻
- A Hierarchical Video-on-Demand System for ATM Networks
- 網路佈線與應用(2)--高速網路佈線現況
- On the Design of a High-Speed Network Environment for Multimedia Applications
- DSP在超高速網路上的技術應用
- 體驗極速快感的10Gb乙太網路
- Performance Analysis of Two Rate-Based Window Flow Control Schemes for Atm Lan
- 由Gigabit Ethernet談高速網路未來趨勢
- SysKonnect總裁談--高速網路的發展
- 桌上型電子虛擬教室系統在高速網路上之設計與製作
- 高速網路趨勢及技術探索
頁籤選單縮合
題 名 | A Hierarchical Video-on-Demand System for ATM Networks=階層式隨意視訊在高速網路上之設計與製作 |
---|---|
作 者 | 黃仁竑; 陳旻秀; | 書刊名 | Proceedings of the National Science Council : Part A, Physical Science and Engineering |
卷 期 | 23:3 1999.05[民88.05] |
頁 次 | 頁369-381 |
分類號 | 448.889 |
關鍵詞 | 階層式隨意視訊; 高速網路; Video-on-demand; ATM; Hierarchical VOD; MPEG; |
語 文 | 英文(English) |
中文摘要 | 隨著通訊科技與多媒體技術的突飛猛進,透過網路傳送即時多媒體資料到家庭裡 已不再是遙不可及的事了。在這新一代的多媒體應用中,隨意視訊是最被看好,將成為二十 一世紀每一家庭最重要的娛樂之一。在這篇論文中,我們著重在隨意視訊的網路模組的設計 與製作。我們首先提出一個具有低價位、高效能、高擴充性及高容錯性的特性的階層式隨意 視訊系統。針對這個架構,我們也設計並製作了適合的通訊協定。由於傳送即時視訊資料需 要極高的服務品質的要求,我們特別提出三種機制來達成。首先是將影片切成數個區段,每 一區段以固定速來傳輸。再則是以新的流量控制方法使傳送即時視訊資料時,不但傳輸延遲 及延遲變異可以控制,傳輸的速率也可以保持在一固定速率。最後是利用允入控制使得現有 的服務品質不受新的連線建立的影響。我們相信當高速網路和高效能電腦愈來愈普遍時,我 們所提的階層式隨意視訊系統將是一個實用又有效率的架構。 |
英文摘要 | Video-on-Demand (VOD) is expected to be the key residential service in the near future. A VOD system consists of the three components: the VOD server. The transport network, and the end user. In this paper, we focus on the network module of a VOD system. We propose a hierarchical VOD network structure which can be used to achieve a low cost, high performance, high scalability, and high reliability VOD system. In this hierarchical VOD system, the level-2 gateway is the most important element. All video streams retrieved from storage systems are pumped by the level-2 gateway to clients. In this paper, three mechanisms are proposed for pumping video streams with throughput, jitter, and delay guarantees. First, due to the large variety of traffic characteristics of Motion Pictures Expert Group-1 (MPEG-1) video streams, we propose to transmit an MPEG-1 video using the Piecewise Constant Rate Transmission and Transport (PCRTT) technique. Second, to guarantee throughput, and to avoid jitter, and delay, a new traffic control algorithm, referred to as the Modified Generic Cell Rate Algorithm (MGCRA), is proposed. Finally, the cell admission function is implemented based on PCRTT rates and dynamic Virtual Path (VP) bandwidth allocation. The proposed architecture and mechanisms have been implemented and are shown to be a practical and efficient solution for large scale VOD systems. |
本系統中英文摘要資訊取自各篇刊載內容。