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研究生： 邱靖捷
Chiu, Ching-Chieh
論文名稱： IMS-Based Femtocell: Design, Implementation and Performance Evaluation
基於IP多媒體子系統的毫微型蜂巢式基地台：設計、實作與效能分析
指導教授： 楊舜仁
Yang, Shun-Ren
口試委員: 高榮駿
逄愛君
學位類別： 碩士
Master
系所名稱： 電機資訊學院 - 資訊工程學系
Computer Science
論文出版年： 2011
畢業學年度： 99
語文別： 英文
論文頁數： 58
中文關鍵詞： 微毫型蜂巢式基地台
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    • 近年來，為了提升室內收訊品質、傳輸速率、更佳的使用經驗，Femtocell被提出並且熱烈的討論。Femtocell就像是一個室內的基地台，但它使用極小的功率來發射電磁波，目的在於提升室內的收訊品質。與室外基地台不同的地方在於，它的後端無須與電信業者的機房直接連接，而是透過家裡的網路線來連接至電信業者的系統。然而，現存的電信系統五花八門，對於某一電信業者來說，可能同時有2.5G、3G、4G的系統同時存在，然而Femtocell該如何接取到後端不同的系統，有很多的方法已經被提出。在這篇論文中，我們選用了IMS-Based的接取方式來連接至電信業者的系統，然而，Femtocell透過IMS-Based方法連接至電信業者系統的相關規定尚未標準化。因此，我們基於撥號通話的服務，設計了一套手機與IMS通訊的撥號流程，並且透過設計與實作Femtocell，驗證了該流程的可行性。此外，我們也透過模擬比較了各種不同撥號流程的效能。

    Contents Abstract i Contents i List of Figures iv 1 Introduction 1 2 Background Information 5 2.1 IMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2 SIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Proposed Call Procedure 8 3.1 Call Procedure of 3GPP Call Control . . . . . . . . . . . . . . . . . . . . . 8 3.2 Call Procedure of IMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.3 Mappping between CC and IMS messages . . . . . . . . . . . . . . . . . . 12 3.4 Enhanced Call Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4 Design of The IMS-Based Femtocell 18 4.1 Protocol stack of IMS-based femtocell . . . . . . . . . . . . . . . . . . . . . 18 4.2 Software architecture of IMS-based femtocell . . . . . . . . . . . . . . . . . 18 4.3 Flow chart of the IMS-based femtocell . . . . . . . . . . . . . . . . . . . . 21 5 Testbed 22 5.1 Components Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.2 Wireshark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.3 Demonstration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 6 Performance Evaluation 29 6.1 Simulation Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6.2 Simulation Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 6.3 Simulation Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 6.4 Simulation Result . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 7 Conclusisons

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