臺灣博碩士論文加值系統

隨著資訊技術的不斷演進，行動網路技術的發達使得資料取得方便，而在這種環境下使用者可以透過智慧型裝置與無線網路隨時取得所需的媒體（音頻/視頻串流）來源，並可以在任何地點及時間，更方便的使用網路分享有趣或有用的多媒體內容，形成新興的媒體同步環境，稱之為Inter-Destination Multimedia Synchronization（IDMS），本論文針對這樣的需求，基於IP多媒體子系統（IP Multimedia Subystem；IMS），建構多媒體同步應用服務，讓用戶可以透過自身的設備同步取得相同的影像串流，進而即時討論。

The fast-developing information and communications technologies have brought people to access learning resources via smart devices and mobile networks anywhere and anytime. To facilitate users’ real-time interactive communication and discussions by watching multimedia videos synchronously on social networks, this thesis constructed multimedia network environment on the IP Multimedia System (IMS) and used the mechanism of Inter-Destination Multimedia Synchronization (IDMS) to ensure that each single person and other learners watch multimedia streaming videos and communicate one another simultaneously.

目錄
摘要 I
Abstract II
致謝 III
目錄 IV
表目錄 VI
圖目錄 VII
第一章、 緒論 1
1.1 前言 1
1.2 研究動機與目的 1
1.3 論文架構 1
第二章、 背景知識與文獻探討 3
2.1 背景知識 3
2.1.1 IMS 3
2.1.2 Sip-Servlet 4
2.1.3 Real-time Transport Protocol（RTP） 5
2.1.4 Real-time Transport Control Protocol（RTCP） 10
2.1.5 Real Time Streaming Protocol（RTSP ）14
2.2 文獻探討 17
2.2.1 多媒體串流同步 17
2.2.2 IDMS Schemes Classification 20
第三章、 基於IMS的媒體同步管理架構 22
3.1 系統架構 22
3.2 IMS控制層會話建立 23
3.3 多媒體同步管理機制 24
3.3.1 多媒體管理架構 24
3.3.2 多媒體管理與控制方法 26
3.3.3 多媒體同步策略演算法 26
第四章、 系統實作 37
4.1 系統配備與實作環境 37
4.2 建立實驗環境 37
第五章、 系統實驗與未來工作 40
5.1 效能評估與分析 40
5.1.1 SIP完整會話 41
5.1.2 統整分析 43
5.1.3 觀賞達到不同步 46
5.1.4 觀賞穩定同步 47
5.1.5 RTCP之間媒體同步 49
第六章、 結論 52
參考文獻 53

表目錄
表3-1、接收器參數[2] 35
表5-1、實驗相關參數 47
表5-2、媒體時間 48
表5-3、媒體時間差 49

圖目錄
圖2-1、IMS網路架構圖 3
圖2-2、RTP Header[17] 6
圖2-3、Extension Header54[17] 7
圖2-4、Codec[17] 8
圖2-5、Sequence Number[17] 9
圖2-6、RTP與RTCP運作示意圖 10
圖2-7、RTCP XR封包格式[13] 11
圖2-8、Intra-stream synchronization[18] 18
圖2-9、Inter-Stream Synchronization[18] 19
圖2-10、Multimedia Synchronization[2] 19
圖2-11、Master/Slave（M/S）scheme 21
圖3-1、系統架構圖 22
圖3-2、建立媒體串流流程圖 23
圖3-3、媒體同步的事件處理 25
圖3-4、多媒體同步訊息描述 27
圖3-5、Media Information Management 28
圖3-6、多媒體播放策略對節點的延遲和抖動 33
圖4-1、IMS Core 啟動畫面 38
圖4-2、MS啟動畫面 38
圖4-3、Client端軟體參數設定 39
圖5-1、用戶同步影像介面 41
圖5-2、SIP整體完成建立會話之平均抖動 42
圖5-3、SIP整體完成建立會話之數據圖 43
圖5-4、用戶播放媒體的同步數據圖 44
圖5-5、同步播出範圍 45
圖5-6、介於0ms~500ms間漂移狀況放大圖 45
圖5-7、介於580ms~850ms間快進同步花費速度放大圖 46
圖5-8、封包傳送時間 48
圖5-9、封包之間的抖動 50
圖5-10、累計延遲數量 50
圖5-11、發送報告的封包值線圖 51

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