臺灣博碩士論文加值系統

在本篇論文中，我們建構一個異質網路整合的方案，以Internet為骨幹網路將四種現有的異質網路加以整合：網際網路(Internet)、公眾服務電信網路(PSTN)、 GSM及無線區域網路(WLAN)。利用部分異質網路所具有的行動特性，使通訊的設備具有無縫漫遊的能力。並在我們的整合網路架構上發展一個行動網際網路電話系統(MVoIP)，利用整合網路所提供的行動力改善現今VoIP應用上的缺點，使得系統內的使用者在移動中仍可進行MVoIP的應用服務。在本文中將針對異質網路的整合設計方式、設計考量與系統運作模式做詳細的說明，並針對MVoIP應用的設計考量、運作模式及系統實作上的相關問題上作一番討論。本論文主要的貢獻在於建構一個整合的網路新環境用以支援一個新的應用程式。

In this paper，we build up a proposal of heterogeneous network integration，as internet be the backbone network integrating four available heterogeneous networks : Internet、PSTN、GSM and WLAN. To use the characteristic of mobility on parts of heterogeneous networks，we make the communication equipment having seamless roaming ability. On our integrating networks architecture，we develop a application named Mobile Voice over Internet Protocol (MVoIP)，and use the mobility of integrating networks to overcome nowadays VoIP drawbacks，and make the user in our system when moving can still run the MVoIP application. In this paper，on one hand the description is emphasized on the design of system，its design issues，and the operation model，and the other hand we will still discuss the design issues of MVoIP application，its operation model and related problems. Our major contribution is to build up a new network integrating environment for the new application.

中文摘要I
AbstractII
致謝III
目錄IV
圖目錄VI
表目錄VIII
1.緒論1
1.1研究背景與動機1
1.2問題3
1.3目的4
2.相關研究7
2.1Mobile IP7
2.2GSM & GPRS12
2.3VOIP(Voice Over Internet Protocol)18
3. 執行平台設計28
3.1 平台實體架構28
3.2 平台邏輯架構30
3.3 平台設計考量32
3.4 系統運作模式34
3.4.1註冊程序(Registration)34
3.4.2 登入程序38
3.4.3 位置追蹤與通訊連結40
3.4.4 交遞48
3.4.5 資料傳送56
3.4.6 離線登出程序61
3.5 系統元件模組設計62
3.5.1 異質網路整合中心63
3.5.2 基地台67
3.5.3 行動電腦70
4.MVoIP之設計73
4.1 MVoIP實體架構及邏輯架構73
4.2 MVoIP設計考量75
4.3 MVoIP運作模式77
4.3.1申請號碼程序(Ask Number)77
4.3.2號碼分析程序(Number Analysis)79
4.3.4 Mcma to Mcma82
4.3.5 Mcma to Phone83
4.3.6 Phone to Mcma84
4.3.7 Phone to Phone85
4.4 MVoIP元件模組設計87
4.4.1 閘道器管理員(Gatekeeper)87
4.4.2 網際網路電話閘道器(Internet Telephone Gateway)90
5.系統實作92
5.1通訊封包格式92
5.2系統通訊命令94
5.3Tier的轉換97
5.4取樣率及Buffer98
5.5 ITG閘道器的互通性103
5.6 實作討論104
6.結論與未來工作107
參考文獻109

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