臺灣博碩士論文加值系統

　　為了完整支援行動用戶進行同步多媒體多點傳送，在本篇論文中提出了稱之為Synchronized Multimedia Multicast (SMM) 的機制，SMM機制依循Mobile IP 及CBT v2標準並結合MPEG-4 FGS編碼技術後可達到傳統HS及RS機制無法滿足的目標: 1. 在mobile IP的環境下進行一對多之即時多媒體多點傳送應用型式時，即使mobile sender及mobile receiver同時進行了handoff，藉由SMM機制的運作便能有效地消除receiver端即時多媒體播放產生播放中斷及跳過某段畫面的問題。2. SMM機制下能明確計算出mobile sender、core router、foreign agent及mobile receiver滿足播放不中斷所需配置的最低buffer的大小，可作為系統建置或硬體設計的參考。3. SMM利用MPEG-4 FGS編碼方法，只需在handoff後一小段時間內付出降低媒體品質的代價後，便可在不額外取得寶貴的無線頻寬下滿足mobile sender及mobile receiver無限多次handoff的需求。

In this paper, we propose the Synchronized Mobile Multicast (SMM) scheme for the real-time multimedia multicast service to achieve three most important characteristics that the traditional Home Subscription (HS) and Remote Subscription (RS) mobile schemes cannot support. First, the SMM scheme supports the one-to-many synchronized multimedia multicast on mobile IP networks to achieves seamless playback of continuous media streams even when both the mobile sender and receivers handoff simultaneously. Second, it analyzes the minimal buffer requirements of the mobile sender, the core router, the foreign agents and the mobile receivers in the multicast tree and formulates the initial playback delay within a handoff Guarantee Region (GR). Further, combined with the fine granularity scalability (FGS) encoding approach in the MPEG-4 standard, the SMM scheme achieves unlimited numbers of handoffs of the mobile sender and receivers only at the cost of degraded video quality for a short period after handoff with minimal extra bandwidth.

目 錄
摘要.....................................................................................................................I
Abstract..............................................................................................................II
誌謝..................................................................................................................III
目錄..................................................................................................................IV
表目錄..............................................................................................................VI
圖目錄.............................................................................................................VII
第一章、研究背景與動機..................................................................................1
第二章、文獻總覽..............................................................................................7
2.1 Mobile IP...................................................................................................7
2.2 IP Multicast.............................................................................................10
2.3 結合IP Multicast 與Mobile IP之相關文獻之探討.............................11
2.4媒體同步傳送的相關文獻之探討.........................................................16
第三章、SMM系統架構及運作.......................................................................18
3.1 SMM系統架構.......................................................................................18
3.2 SMM運作流程.......................................................................................23
第四章、模擬實驗及結果................................................................................47
4.1 模擬實驗一............................................................................................50
4.2 模擬實驗二............................................................................................61
4.3 模擬實驗三............................................................................................70
第五章、結論....................................................................................................74
第六章、參考文獻............................................................................................76
第七章、著作表列............................................................................................79

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