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論文中文名稱:多重描述編碼之同儕式隨選視訊串流設計與分析 [以論文名稱查詢館藏系統]
論文英文名稱:Design and analysis of peer-to-peer streaming for multiple description encoded video [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:管理學院
系所名稱:資訊與運籌管理研究所
畢業學年度:101
出版年度:102
中文姓名:陳淳彥
英文姓名:Chun-Yan Chen
研究生學號:100938006
學位類別:碩士
語文別:中文
口試日期:2013-06-27
論文頁數:26
指導教授中文名:陳育威
口試委員中文名:吳建文;陳世賢
中文關鍵詞:P2P隨選視訊VoD串流傳輸MDC編碼緩衝機制快取機制
英文關鍵詞:P2PVoDstreamingMDCbufferingcaching
論文中文摘要:在現行的網路傳輸中使用P2P (peer-to-peer) 的架構是非常流行與普及的,這種方式與傳統主從式(client-server) 架構相比,可以減少伺服器的負荷。而隨著多媒體的盛行,隨選視訊(video-on-demand , VoD) 系統使用P2P的架構也越來越多。在VoD系統中當有使用者要求視訊服務時,就要尋找到可提供要求服務的其他使用者來獲得服務,減少伺服器負荷。本研究提出將影片切割成若干片段後再經由 MDC (multiple description coding)技術將各片段切成若干等分,利用這樣二維度切割的前置處理去解決網路傳遞環境中容易發生的封包遺失問題,也可讓不同頻寬能力的使用者可以觀看影片。接著設計合適的存取機制,讓使用者在獲得服務後可以順利的觀看,並可以提供服務給其他使用者。最後經由模擬實驗結果觀察出,本論文提出的串流傳輸機制,適合在P2P的環境下,能有效的降低伺服器負荷。
論文英文摘要:Of all the current network data transfer architectures, P2P architecture is one of the most popular architectures. It could reduce server loading compared to traditional client-server architecture. With prevalence of multimedia, more and more VoD (video-on-demand) systems are applied on P2P architectures. In this paper, we propose P2P streaming for multiple descriptions coding (MDC) video. The proposed method allows users with different bandwidths watching the same video. We first divide a video file into segments, and then divide those segments again by using MDC. Then, we design an adaptive access mechanism to make services not only available for users but also transferrable to another user. The simulation results indicate that the mechanism is suitable in P2P architecture. What’s more, the mechanism can significantly reduce the server load.
論文目次:摘要 I
ABSTRACT II
誌謝 III
目錄 IV
表目錄 V
圖目錄 VI
第一章 緒論 1
第二章 文獻探討 3
2.1 多重描述編碼 (Multiple Description Coding, MDC) 3
2.2 影片局部性基礎之緩衝機制(Video locality based buffering) 4
2.3 平衡動態緩衝機制(Balanced Dynamic Buffering) 5
第三章 串流傳輸機制 6
3.1 影片二維度前置切割處理 7
3.2 架構設計與機制 8
3.2.1 分群 8
3.2.2決定觀賞品質( n ) 9
3.2.3 快取機制 10
3.2.4 緩衝機制 12
第四章 效能評估 15
4.1模擬系統建置 15
4.2模擬實驗參數設定 17
4.3實驗結果與分析 18
4.3.1 使用者數量( P )的影響 19
4.3.2 描述個數( N )的影響 21
第五章 結論 23
參考文獻 24
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論文全文使用權限:同意授權於2015-08-13起公開