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研究生： 洪子麒
Zu-chi Hong
論文名稱： Bit Torrent 在多重檔案下載之研究
Strategies for Multi-file Download in BitTorrent
指導教授： 陳秋華
Chyou-hwa Chen
口試委員: 金台齡
Tai-Lin Chin
馮輝文
Huei-Wen Ferng
學位類別： 碩士
Master
系所名稱： 電資學院 - 資訊工程系
Department of Computer Science and Information Engineering
論文出版年： 2007
畢業學年度： 95
語文別： 中文
論文頁數： 35
中文關鍵詞： 點對點網路 、公平性 、Bittorrent 、Completion time
外文關鍵詞： peer-to-peer, Fairness, Bittorrent, Completiont
相關次數： 點閱：715  下載：1 
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    • 本論提出以Virtual file為多檔下載的基礎，並以(1) 鄰居的選擇、(2) Choke的選擇、(3) Piece的選擇等三個方向為主軸來解決此不公平現象，同時有效降低Completion Time。
    本論文以模擬器為實驗基礎，分析比較BT的多檔下載方式，並深入探討在其協定中發生不公平的主要情況，研究其在同質、異質網路上的各種效果與影響。

    We investigate the utility of a number of mechanisms to improve the fairness and efficiency of BitTorrent . We make two contributions. First, the effectiveness of a number of Multi-File mechanisms is compared. Second, We show that our proposed strategy can improve the fairness and completion time performance in flash-crowd、Homogeneous and Heterogeneous scenarios.

    誌謝 I 摘要 II ABSTRACT III TABLE OF CONTENTS IV LIST OF TABLES V ABBREVIATIONS VII 1 INTRODUCTION 1 1.1 FOREWORD 1 1.2 MOTIVATION 2 2 RELATED WORKS 3 2.1 SINGE FILE DOWNLOADING STRATEGIES 3 2.1.1 Neighbor-set level strategy 3 2.1.2 Peer selection strategy 5 2.1.3 Piece selection strategy 5 2.2 BT BASIC MULTIPLE FILES DOWNLOADING STRATEGIES 9 2.2.1 Multi-file relate work 9 2.2.2 Main problem of Multi-file downloading 10 3 THE BASIC VIRTUAL-FILE STRATEGY FOR MULTI-FILE DOWNLOAD AND ITS PERFORMANCE 14 3.1 QUANTITY-BASE NEIGHBOR SHAKING 14 3.2 COMPARE PERFORMANCE OF ALL MULTI-FILE STRATEGIES 18 4 STRATEGIES TO IMPROVE FAIRNESS AND DOWNLOAD TIME IN BITTORRENT 24 4.1 VIRTUAL-FILE WITH BANDWIDTH MATCHING (VF-BM) 25 4.2 VIRTUAL-FILE WITH WEIGHTED ALTRUISM (VF-WA) 25 4.3 VIRTUAL-FILE WITH WEIGHTED LRF 26 5 PERFORMANCE EVALUATION OF THE COMBINED STRATEGIES 26 5.1 FLASH CROWD DOWNLOAD OF MULTIPLE FILES IN A HOMOGENEOUS ENVIRONMENT 28 5.2 FLASH CROWD DOWNLOAD OF MULTIPLE FILES IN A HETEROGENEOUS ENVIRONMENT 31 6 CONCLUSIONS 34 REFERENCE 35

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