道路行車感測網路應用中，Server Push 的多媒體服務廣告，在這個資訊發達的時代，已成為商業媒體行銷不可或缺的資訊管道之一。Server Push 的應用，例如：電信業者提供的Push Mail 服務，已經成為近來行動郵件最 Hot 的焦點。本論文將設計研究行動車載網路，讓收到廣告者，能與廣告中之服務提供者有互動交談詢問之機制，然而在移動中，產生的換手(Handoff)問題，容易造成通話品質的降低，所以無縫式換手是我們必須要探討的一個很重要的問題。 為此，在這篇論文中將以Linux Kernel SCTP 函式庫為基礎的傳輸層 (Layer 4)通訊協定作為解決方案，SCTP保留TCP/IP之優點並增加新的支援，其一重要特性便是當使用者擁有多個IP位址，在某條傳輸路徑中斷時，立即切換至其他備用IP位址，讓使用者換手過程中，不會易感受到中斷的現象。最後，將以改良SCTP 通訊協定，讓網路連線有更快速的反應時間，有助於需要快速反應時間的應用。

With the rapid growth of communication, applications in traffic sensor network such as the multimedia service Server Push, are indispensable to business advertising. The applications of server push, for example, the service Push Mail provided by ISP (Internet Service Provider), became much more hot and popular. This paper aims to design a mobile vehicular network to let the people who received the advertisement communicate with the providers of the service. Nevertheless, the handoff problem that arises when traveling brings down the quality of communication. Therefore, seamless handoff becomes a very important issue for us to research. This thesis uses the new SCTP (Stream Control Transmission Protocol) to solve the problem. SCTP not only keeps the advantages of TCP/IP but also provides new support. Allowing the user to own several IP addresses at the same time is one of its important characteristics, which allows you to switch to any other available IP immediately if the transmission is interruptted. With this characteristic, the user barely notices any interruption in the process of handoff. Finally, we propose a new design for SCTP to achieve a response time, and can be used in applications that require a fast response time.

致謝 I
中文摘要 II
ABSTRACT III
目錄 IV
圖目錄 VI
第1章 序論 - 1 -
1.1 研究背景 - 1 -
1.2 研究動機與目的 - 2 -
1.3 章節介紹 - 2 -
第2章 網路電話介紹 - 4 -
2.1 VOIP介紹 - 4 -
2.2 SIP介紹 - 5 -
2.3 3PCC介紹 - 8 -
2.3.1 3PCC概述 - 8 -
2.3.2 3PCC應用 - 9 -
2.3.3 3PCC架構 - 10 -
2.4 REFER方法 - 11 -
2.4.1 REFER簡介 - 11 -
2.4.2 Refer-To標頭欄位 - 12 -
2.5 行動網路HANDOFF相關研究 - 13 -
2.5.1 Layer 2 - 13 -
2.5.2 Layer 3 - 14 -
2.5.3 Layer 4 - 16 -
2.5.4 SCTP Mobility 研究情況 - 24 -
第3章 開發環境介紹 - 25 -
3.1 VOIP GATEWAY介紹 - 25 -
3.2 硬體架構介紹 - 25 -
3.3 軟體架構介紹 - 27 -
3.4 SIP UA軟體運作流程 - 29 -
第4章 實驗設計與分析 - 32 -
4.1 實驗環境 - 32 -
4.2 實驗流程和設計 - 32 -
4.2.1 實驗設計A - 32 -
4.2.2 實驗設計B - 33 -
4.2.3 實驗設計C - 34 -
4.2.4 實驗設計D - 34 -
4.2.5 實驗設計E - 35 -
4.3 實驗結果和分析 - 35 -
4.3.1 實驗設計A - 35 -
4.3.2 實驗設計B - 40 -
4.3.3 實驗設計C - 55 -
4.3.4 實驗設計D - 60 -
4.3.5 實驗設計E - 66 -
第5章 結論 - 75 -
參考文獻 - 76 -

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